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 itertools::Itertools as _;
32pub use language::{char_kind, CharKind};
33use language::{
34 BracketPair, Buffer, CodeAction, CodeLabel, Completion, Diagnostic, DiagnosticSeverity,
35 Language, OffsetRangeExt, Point, Selection, SelectionGoal, TransactionId,
36};
37use multi_buffer::MultiBufferChunks;
38pub use multi_buffer::{
39 Anchor, AnchorRangeExt, ExcerptId, MultiBuffer, MultiBufferSnapshot, ToOffset, ToPoint,
40};
41use ordered_float::OrderedFloat;
42use project::{Project, ProjectTransaction};
43use serde::{Deserialize, Serialize};
44use smallvec::SmallVec;
45use smol::Timer;
46use snippet::Snippet;
47use std::{
48 any::TypeId,
49 cmp::{self, Ordering, Reverse},
50 iter::{self, FromIterator},
51 mem,
52 ops::{Deref, DerefMut, Range, RangeInclusive, Sub},
53 sync::Arc,
54 time::{Duration, Instant},
55};
56pub use sum_tree::Bias;
57use text::rope::TextDimension;
58use theme::DiagnosticStyle;
59use util::{post_inc, ResultExt, TryFutureExt};
60use workspace::{settings, ItemNavHistory, PathOpener, Settings, Workspace};
61
62const CURSOR_BLINK_INTERVAL: Duration = Duration::from_millis(500);
63const MAX_LINE_LEN: usize = 1024;
64const MIN_NAVIGATION_HISTORY_ROW_DELTA: i64 = 10;
65
66action!(Cancel);
67action!(Backspace);
68action!(Delete);
69action!(Input, String);
70action!(Newline);
71action!(Tab);
72action!(Outdent);
73action!(DeleteLine);
74action!(DeleteToPreviousWordBoundary);
75action!(DeleteToNextWordBoundary);
76action!(DeleteToBeginningOfLine);
77action!(DeleteToEndOfLine);
78action!(CutToEndOfLine);
79action!(DuplicateLine);
80action!(MoveLineUp);
81action!(MoveLineDown);
82action!(Cut);
83action!(Copy);
84action!(Paste);
85action!(Undo);
86action!(Redo);
87action!(MoveUp);
88action!(MoveDown);
89action!(MoveLeft);
90action!(MoveRight);
91action!(MoveToPreviousWordBoundary);
92action!(MoveToNextWordBoundary);
93action!(MoveToBeginningOfLine);
94action!(MoveToEndOfLine);
95action!(MoveToBeginning);
96action!(MoveToEnd);
97action!(SelectUp);
98action!(SelectDown);
99action!(SelectLeft);
100action!(SelectRight);
101action!(SelectToPreviousWordBoundary);
102action!(SelectToNextWordBoundary);
103action!(SelectToBeginningOfLine, bool);
104action!(SelectToEndOfLine, bool);
105action!(SelectToBeginning);
106action!(SelectToEnd);
107action!(SelectAll);
108action!(SelectLine);
109action!(SplitSelectionIntoLines);
110action!(AddSelectionAbove);
111action!(AddSelectionBelow);
112action!(SelectNext, bool);
113action!(ToggleComments);
114action!(SelectLargerSyntaxNode);
115action!(SelectSmallerSyntaxNode);
116action!(MoveToEnclosingBracket);
117action!(GoToDiagnostic, Direction);
118action!(GoToDefinition);
119action!(FindAllReferences);
120action!(Rename);
121action!(ConfirmRename);
122action!(PageUp);
123action!(PageDown);
124action!(Fold);
125action!(Unfold);
126action!(FoldSelectedRanges);
127action!(Scroll, Vector2F);
128action!(Select, SelectPhase);
129action!(ShowCompletions);
130action!(ToggleCodeActions, bool);
131action!(ConfirmCompletion, Option<usize>);
132action!(ConfirmCodeAction, Option<usize>);
133action!(OpenExcerpts);
134
135enum DocumentHighlightRead {}
136enum DocumentHighlightWrite {}
137
138#[derive(Copy, Clone, PartialEq, Eq)]
139pub enum Direction {
140 Prev,
141 Next,
142}
143
144pub fn init(cx: &mut MutableAppContext, path_openers: &mut Vec<Box<dyn PathOpener>>) {
145 path_openers.push(Box::new(items::BufferOpener));
146 cx.add_bindings(vec![
147 Binding::new("escape", Cancel, Some("Editor")),
148 Binding::new("backspace", Backspace, Some("Editor")),
149 Binding::new("ctrl-h", Backspace, Some("Editor")),
150 Binding::new("delete", Delete, Some("Editor")),
151 Binding::new("ctrl-d", Delete, Some("Editor")),
152 Binding::new("enter", Newline, Some("Editor && mode == full")),
153 Binding::new(
154 "alt-enter",
155 Input("\n".into()),
156 Some("Editor && mode == auto_height"),
157 ),
158 Binding::new(
159 "enter",
160 ConfirmCompletion(None),
161 Some("Editor && showing_completions"),
162 ),
163 Binding::new(
164 "enter",
165 ConfirmCodeAction(None),
166 Some("Editor && showing_code_actions"),
167 ),
168 Binding::new("enter", ConfirmRename, Some("Editor && renaming")),
169 Binding::new("tab", Tab, Some("Editor")),
170 Binding::new(
171 "tab",
172 ConfirmCompletion(None),
173 Some("Editor && showing_completions"),
174 ),
175 Binding::new("shift-tab", Outdent, Some("Editor")),
176 Binding::new("ctrl-shift-K", DeleteLine, Some("Editor")),
177 Binding::new(
178 "alt-backspace",
179 DeleteToPreviousWordBoundary,
180 Some("Editor"),
181 ),
182 Binding::new("alt-h", DeleteToPreviousWordBoundary, Some("Editor")),
183 Binding::new("alt-delete", DeleteToNextWordBoundary, Some("Editor")),
184 Binding::new("alt-d", DeleteToNextWordBoundary, Some("Editor")),
185 Binding::new("cmd-backspace", DeleteToBeginningOfLine, Some("Editor")),
186 Binding::new("cmd-delete", DeleteToEndOfLine, Some("Editor")),
187 Binding::new("ctrl-k", CutToEndOfLine, Some("Editor")),
188 Binding::new("cmd-shift-D", DuplicateLine, Some("Editor")),
189 Binding::new("ctrl-cmd-up", MoveLineUp, Some("Editor")),
190 Binding::new("ctrl-cmd-down", MoveLineDown, Some("Editor")),
191 Binding::new("cmd-x", Cut, Some("Editor")),
192 Binding::new("cmd-c", Copy, Some("Editor")),
193 Binding::new("cmd-v", Paste, Some("Editor")),
194 Binding::new("cmd-z", Undo, Some("Editor")),
195 Binding::new("cmd-shift-Z", Redo, Some("Editor")),
196 Binding::new("up", MoveUp, Some("Editor")),
197 Binding::new("down", MoveDown, Some("Editor")),
198 Binding::new("left", MoveLeft, Some("Editor")),
199 Binding::new("right", MoveRight, Some("Editor")),
200 Binding::new("ctrl-p", MoveUp, Some("Editor")),
201 Binding::new("ctrl-n", MoveDown, Some("Editor")),
202 Binding::new("ctrl-b", MoveLeft, Some("Editor")),
203 Binding::new("ctrl-f", MoveRight, Some("Editor")),
204 Binding::new("alt-left", MoveToPreviousWordBoundary, Some("Editor")),
205 Binding::new("alt-b", MoveToPreviousWordBoundary, Some("Editor")),
206 Binding::new("alt-right", MoveToNextWordBoundary, Some("Editor")),
207 Binding::new("alt-f", MoveToNextWordBoundary, Some("Editor")),
208 Binding::new("cmd-left", MoveToBeginningOfLine, Some("Editor")),
209 Binding::new("ctrl-a", MoveToBeginningOfLine, Some("Editor")),
210 Binding::new("cmd-right", MoveToEndOfLine, Some("Editor")),
211 Binding::new("ctrl-e", MoveToEndOfLine, Some("Editor")),
212 Binding::new("cmd-up", MoveToBeginning, Some("Editor")),
213 Binding::new("cmd-down", MoveToEnd, Some("Editor")),
214 Binding::new("shift-up", SelectUp, Some("Editor")),
215 Binding::new("ctrl-shift-P", SelectUp, Some("Editor")),
216 Binding::new("shift-down", SelectDown, Some("Editor")),
217 Binding::new("ctrl-shift-N", SelectDown, Some("Editor")),
218 Binding::new("shift-left", SelectLeft, Some("Editor")),
219 Binding::new("ctrl-shift-B", SelectLeft, Some("Editor")),
220 Binding::new("shift-right", SelectRight, Some("Editor")),
221 Binding::new("ctrl-shift-F", SelectRight, Some("Editor")),
222 Binding::new(
223 "alt-shift-left",
224 SelectToPreviousWordBoundary,
225 Some("Editor"),
226 ),
227 Binding::new("alt-shift-B", SelectToPreviousWordBoundary, Some("Editor")),
228 Binding::new("alt-shift-right", SelectToNextWordBoundary, Some("Editor")),
229 Binding::new("alt-shift-F", SelectToNextWordBoundary, Some("Editor")),
230 Binding::new(
231 "cmd-shift-left",
232 SelectToBeginningOfLine(true),
233 Some("Editor"),
234 ),
235 Binding::new(
236 "ctrl-shift-A",
237 SelectToBeginningOfLine(true),
238 Some("Editor"),
239 ),
240 Binding::new("cmd-shift-right", SelectToEndOfLine(true), Some("Editor")),
241 Binding::new("ctrl-shift-E", SelectToEndOfLine(true), Some("Editor")),
242 Binding::new("cmd-shift-up", SelectToBeginning, Some("Editor")),
243 Binding::new("cmd-shift-down", SelectToEnd, Some("Editor")),
244 Binding::new("cmd-a", SelectAll, Some("Editor")),
245 Binding::new("cmd-l", SelectLine, Some("Editor")),
246 Binding::new("cmd-shift-L", SplitSelectionIntoLines, Some("Editor")),
247 Binding::new("cmd-alt-up", AddSelectionAbove, Some("Editor")),
248 Binding::new("cmd-ctrl-p", AddSelectionAbove, Some("Editor")),
249 Binding::new("cmd-alt-down", AddSelectionBelow, Some("Editor")),
250 Binding::new("cmd-ctrl-n", AddSelectionBelow, Some("Editor")),
251 Binding::new("cmd-d", SelectNext(false), Some("Editor")),
252 Binding::new("cmd-k cmd-d", SelectNext(true), Some("Editor")),
253 Binding::new("cmd-/", ToggleComments, Some("Editor")),
254 Binding::new("alt-up", SelectLargerSyntaxNode, Some("Editor")),
255 Binding::new("ctrl-w", SelectLargerSyntaxNode, Some("Editor")),
256 Binding::new("alt-down", SelectSmallerSyntaxNode, Some("Editor")),
257 Binding::new("ctrl-shift-W", SelectSmallerSyntaxNode, Some("Editor")),
258 Binding::new("f8", GoToDiagnostic(Direction::Next), Some("Editor")),
259 Binding::new("shift-f8", GoToDiagnostic(Direction::Prev), Some("Editor")),
260 Binding::new("f2", Rename, Some("Editor")),
261 Binding::new("f12", GoToDefinition, Some("Editor")),
262 Binding::new("alt-shift-f12", FindAllReferences, Some("Editor")),
263 Binding::new("ctrl-m", MoveToEnclosingBracket, Some("Editor")),
264 Binding::new("pageup", PageUp, Some("Editor")),
265 Binding::new("pagedown", PageDown, Some("Editor")),
266 Binding::new("alt-cmd-[", Fold, Some("Editor")),
267 Binding::new("alt-cmd-]", Unfold, Some("Editor")),
268 Binding::new("alt-cmd-f", FoldSelectedRanges, Some("Editor")),
269 Binding::new("ctrl-space", ShowCompletions, Some("Editor")),
270 Binding::new("cmd-.", ToggleCodeActions(false), Some("Editor")),
271 Binding::new("alt-enter", OpenExcerpts, Some("Editor")),
272 ]);
273
274 cx.add_action(Editor::open_new);
275 cx.add_action(|this: &mut Editor, action: &Scroll, cx| this.set_scroll_position(action.0, cx));
276 cx.add_action(Editor::select);
277 cx.add_action(Editor::cancel);
278 cx.add_action(Editor::handle_input);
279 cx.add_action(Editor::newline);
280 cx.add_action(Editor::backspace);
281 cx.add_action(Editor::delete);
282 cx.add_action(Editor::tab);
283 cx.add_action(Editor::outdent);
284 cx.add_action(Editor::delete_line);
285 cx.add_action(Editor::delete_to_previous_word_boundary);
286 cx.add_action(Editor::delete_to_next_word_boundary);
287 cx.add_action(Editor::delete_to_beginning_of_line);
288 cx.add_action(Editor::delete_to_end_of_line);
289 cx.add_action(Editor::cut_to_end_of_line);
290 cx.add_action(Editor::duplicate_line);
291 cx.add_action(Editor::move_line_up);
292 cx.add_action(Editor::move_line_down);
293 cx.add_action(Editor::cut);
294 cx.add_action(Editor::copy);
295 cx.add_action(Editor::paste);
296 cx.add_action(Editor::undo);
297 cx.add_action(Editor::redo);
298 cx.add_action(Editor::move_up);
299 cx.add_action(Editor::move_down);
300 cx.add_action(Editor::move_left);
301 cx.add_action(Editor::move_right);
302 cx.add_action(Editor::move_to_previous_word_boundary);
303 cx.add_action(Editor::move_to_next_word_boundary);
304 cx.add_action(Editor::move_to_beginning_of_line);
305 cx.add_action(Editor::move_to_end_of_line);
306 cx.add_action(Editor::move_to_beginning);
307 cx.add_action(Editor::move_to_end);
308 cx.add_action(Editor::select_up);
309 cx.add_action(Editor::select_down);
310 cx.add_action(Editor::select_left);
311 cx.add_action(Editor::select_right);
312 cx.add_action(Editor::select_to_previous_word_boundary);
313 cx.add_action(Editor::select_to_next_word_boundary);
314 cx.add_action(Editor::select_to_beginning_of_line);
315 cx.add_action(Editor::select_to_end_of_line);
316 cx.add_action(Editor::select_to_beginning);
317 cx.add_action(Editor::select_to_end);
318 cx.add_action(Editor::select_all);
319 cx.add_action(Editor::select_line);
320 cx.add_action(Editor::split_selection_into_lines);
321 cx.add_action(Editor::add_selection_above);
322 cx.add_action(Editor::add_selection_below);
323 cx.add_action(Editor::select_next);
324 cx.add_action(Editor::toggle_comments);
325 cx.add_action(Editor::select_larger_syntax_node);
326 cx.add_action(Editor::select_smaller_syntax_node);
327 cx.add_action(Editor::move_to_enclosing_bracket);
328 cx.add_action(Editor::go_to_diagnostic);
329 cx.add_action(Editor::go_to_definition);
330 cx.add_action(Editor::page_up);
331 cx.add_action(Editor::page_down);
332 cx.add_action(Editor::fold);
333 cx.add_action(Editor::unfold);
334 cx.add_action(Editor::fold_selected_ranges);
335 cx.add_action(Editor::show_completions);
336 cx.add_action(Editor::toggle_code_actions);
337 cx.add_action(Editor::open_excerpts);
338 cx.add_async_action(Editor::confirm_completion);
339 cx.add_async_action(Editor::confirm_code_action);
340 cx.add_async_action(Editor::rename);
341 cx.add_async_action(Editor::confirm_rename);
342 cx.add_async_action(Editor::find_all_references);
343}
344
345trait SelectionExt {
346 fn offset_range(&self, buffer: &MultiBufferSnapshot) -> Range<usize>;
347 fn point_range(&self, buffer: &MultiBufferSnapshot) -> Range<Point>;
348 fn display_range(&self, map: &DisplaySnapshot) -> Range<DisplayPoint>;
349 fn spanned_rows(&self, include_end_if_at_line_start: bool, map: &DisplaySnapshot)
350 -> Range<u32>;
351}
352
353trait InvalidationRegion {
354 fn ranges(&self) -> &[Range<Anchor>];
355}
356
357#[derive(Clone, Debug)]
358pub enum SelectPhase {
359 Begin {
360 position: DisplayPoint,
361 add: bool,
362 click_count: usize,
363 },
364 BeginColumnar {
365 position: DisplayPoint,
366 overshoot: u32,
367 },
368 Extend {
369 position: DisplayPoint,
370 click_count: usize,
371 },
372 Update {
373 position: DisplayPoint,
374 overshoot: u32,
375 scroll_position: Vector2F,
376 },
377 End,
378}
379
380#[derive(Clone, Debug)]
381pub enum SelectMode {
382 Character,
383 Word(Range<Anchor>),
384 Line(Range<Anchor>),
385 All,
386}
387
388#[derive(PartialEq, Eq)]
389pub enum Autoscroll {
390 Fit,
391 Center,
392 Newest,
393}
394
395#[derive(Copy, Clone, PartialEq, Eq)]
396pub enum EditorMode {
397 SingleLine,
398 AutoHeight { max_lines: usize },
399 Full,
400}
401
402#[derive(Clone)]
403pub enum SoftWrap {
404 None,
405 EditorWidth,
406 Column(u32),
407}
408
409#[derive(Clone)]
410pub struct EditorStyle {
411 pub text: TextStyle,
412 pub placeholder_text: Option<TextStyle>,
413 pub theme: theme::Editor,
414}
415
416type CompletionId = usize;
417
418pub type GetFieldEditorTheme = fn(&theme::Theme) -> theme::FieldEditor;
419
420type OverrideTextStyle = dyn Fn(&EditorStyle) -> Option<HighlightStyle>;
421
422pub struct Editor {
423 handle: WeakViewHandle<Self>,
424 buffer: ModelHandle<MultiBuffer>,
425 display_map: ModelHandle<DisplayMap>,
426 next_selection_id: usize,
427 selections: Arc<[Selection<Anchor>]>,
428 pending_selection: Option<PendingSelection>,
429 columnar_selection_tail: Option<Anchor>,
430 add_selections_state: Option<AddSelectionsState>,
431 select_next_state: Option<SelectNextState>,
432 selection_history:
433 HashMap<TransactionId, (Arc<[Selection<Anchor>]>, Option<Arc<[Selection<Anchor>]>>)>,
434 autoclose_stack: InvalidationStack<BracketPairState>,
435 snippet_stack: InvalidationStack<SnippetState>,
436 select_larger_syntax_node_stack: Vec<Box<[Selection<usize>]>>,
437 active_diagnostics: Option<ActiveDiagnosticGroup>,
438 scroll_position: Vector2F,
439 scroll_top_anchor: Option<Anchor>,
440 autoscroll_request: Option<Autoscroll>,
441 soft_wrap_mode_override: Option<settings::SoftWrap>,
442 get_field_editor_theme: Option<GetFieldEditorTheme>,
443 override_text_style: Option<Box<OverrideTextStyle>>,
444 project: Option<ModelHandle<Project>>,
445 focused: bool,
446 show_local_cursors: bool,
447 show_local_selections: bool,
448 blink_epoch: usize,
449 blinking_paused: bool,
450 mode: EditorMode,
451 vertical_scroll_margin: f32,
452 placeholder_text: Option<Arc<str>>,
453 highlighted_rows: Option<Range<u32>>,
454 background_highlights: BTreeMap<TypeId, (Color, Vec<Range<Anchor>>)>,
455 nav_history: Option<ItemNavHistory>,
456 context_menu: Option<ContextMenu>,
457 completion_tasks: Vec<(CompletionId, Task<Option<()>>)>,
458 next_completion_id: CompletionId,
459 available_code_actions: Option<(ModelHandle<Buffer>, Arc<[CodeAction]>)>,
460 code_actions_task: Option<Task<()>>,
461 document_highlights_task: Option<Task<()>>,
462 pending_rename: Option<RenameState>,
463 searchable: bool,
464 cursor_shape: CursorShape,
465}
466
467pub struct EditorSnapshot {
468 pub mode: EditorMode,
469 pub display_snapshot: DisplaySnapshot,
470 pub placeholder_text: Option<Arc<str>>,
471 is_focused: bool,
472 scroll_position: Vector2F,
473 scroll_top_anchor: Option<Anchor>,
474}
475
476#[derive(Clone)]
477pub struct PendingSelection {
478 selection: Selection<Anchor>,
479 mode: SelectMode,
480}
481
482struct AddSelectionsState {
483 above: bool,
484 stack: Vec<usize>,
485}
486
487struct SelectNextState {
488 query: AhoCorasick,
489 wordwise: bool,
490 done: bool,
491}
492
493struct BracketPairState {
494 ranges: Vec<Range<Anchor>>,
495 pair: BracketPair,
496}
497
498struct SnippetState {
499 ranges: Vec<Vec<Range<Anchor>>>,
500 active_index: usize,
501}
502
503pub struct RenameState {
504 pub range: Range<Anchor>,
505 pub old_name: String,
506 pub editor: ViewHandle<Editor>,
507 block_id: BlockId,
508}
509
510struct InvalidationStack<T>(Vec<T>);
511
512enum ContextMenu {
513 Completions(CompletionsMenu),
514 CodeActions(CodeActionsMenu),
515}
516
517impl ContextMenu {
518 fn select_prev(&mut self, cx: &mut ViewContext<Editor>) -> bool {
519 if self.visible() {
520 match self {
521 ContextMenu::Completions(menu) => menu.select_prev(cx),
522 ContextMenu::CodeActions(menu) => menu.select_prev(cx),
523 }
524 true
525 } else {
526 false
527 }
528 }
529
530 fn select_next(&mut self, cx: &mut ViewContext<Editor>) -> bool {
531 if self.visible() {
532 match self {
533 ContextMenu::Completions(menu) => menu.select_next(cx),
534 ContextMenu::CodeActions(menu) => menu.select_next(cx),
535 }
536 true
537 } else {
538 false
539 }
540 }
541
542 fn visible(&self) -> bool {
543 match self {
544 ContextMenu::Completions(menu) => menu.visible(),
545 ContextMenu::CodeActions(menu) => menu.visible(),
546 }
547 }
548
549 fn render(
550 &self,
551 cursor_position: DisplayPoint,
552 style: EditorStyle,
553 cx: &AppContext,
554 ) -> (DisplayPoint, ElementBox) {
555 match self {
556 ContextMenu::Completions(menu) => (cursor_position, menu.render(style, cx)),
557 ContextMenu::CodeActions(menu) => menu.render(cursor_position, style),
558 }
559 }
560}
561
562struct CompletionsMenu {
563 id: CompletionId,
564 initial_position: Anchor,
565 buffer: ModelHandle<Buffer>,
566 completions: Arc<[Completion]>,
567 match_candidates: Vec<StringMatchCandidate>,
568 matches: Arc<[StringMatch]>,
569 selected_item: usize,
570 list: UniformListState,
571}
572
573impl CompletionsMenu {
574 fn select_prev(&mut self, cx: &mut ViewContext<Editor>) {
575 if self.selected_item > 0 {
576 self.selected_item -= 1;
577 self.list.scroll_to(ScrollTarget::Show(self.selected_item));
578 }
579 cx.notify();
580 }
581
582 fn select_next(&mut self, cx: &mut ViewContext<Editor>) {
583 if self.selected_item + 1 < self.matches.len() {
584 self.selected_item += 1;
585 self.list.scroll_to(ScrollTarget::Show(self.selected_item));
586 }
587 cx.notify();
588 }
589
590 fn visible(&self) -> bool {
591 !self.matches.is_empty()
592 }
593
594 fn render(&self, style: EditorStyle, _: &AppContext) -> ElementBox {
595 enum CompletionTag {}
596
597 let completions = self.completions.clone();
598 let matches = self.matches.clone();
599 let selected_item = self.selected_item;
600 let container_style = style.autocomplete.container;
601 UniformList::new(self.list.clone(), matches.len(), move |range, items, cx| {
602 let start_ix = range.start;
603 for (ix, mat) in matches[range].iter().enumerate() {
604 let completion = &completions[mat.candidate_id];
605 let item_ix = start_ix + ix;
606 items.push(
607 MouseEventHandler::new::<CompletionTag, _, _>(
608 mat.candidate_id,
609 cx,
610 |state, _| {
611 let item_style = if item_ix == selected_item {
612 style.autocomplete.selected_item
613 } else if state.hovered {
614 style.autocomplete.hovered_item
615 } else {
616 style.autocomplete.item
617 };
618
619 Text::new(completion.label.text.clone(), style.text.clone())
620 .with_soft_wrap(false)
621 .with_highlights(combine_syntax_and_fuzzy_match_highlights(
622 &completion.label.text,
623 style.text.color.into(),
624 styled_runs_for_code_label(&completion.label, &style.syntax),
625 &mat.positions,
626 ))
627 .contained()
628 .with_style(item_style)
629 .boxed()
630 },
631 )
632 .with_cursor_style(CursorStyle::PointingHand)
633 .on_mouse_down(move |cx| {
634 cx.dispatch_action(ConfirmCompletion(Some(item_ix)));
635 })
636 .boxed(),
637 );
638 }
639 })
640 .with_width_from_item(
641 self.matches
642 .iter()
643 .enumerate()
644 .max_by_key(|(_, mat)| {
645 self.completions[mat.candidate_id]
646 .label
647 .text
648 .chars()
649 .count()
650 })
651 .map(|(ix, _)| ix),
652 )
653 .contained()
654 .with_style(container_style)
655 .boxed()
656 }
657
658 pub async fn filter(&mut self, query: Option<&str>, executor: Arc<executor::Background>) {
659 let mut matches = if let Some(query) = query {
660 fuzzy::match_strings(
661 &self.match_candidates,
662 query,
663 false,
664 100,
665 &Default::default(),
666 executor,
667 )
668 .await
669 } else {
670 self.match_candidates
671 .iter()
672 .enumerate()
673 .map(|(candidate_id, candidate)| StringMatch {
674 candidate_id,
675 score: Default::default(),
676 positions: Default::default(),
677 string: candidate.string.clone(),
678 })
679 .collect()
680 };
681 matches.sort_unstable_by_key(|mat| {
682 (
683 Reverse(OrderedFloat(mat.score)),
684 self.completions[mat.candidate_id].sort_key(),
685 )
686 });
687
688 for mat in &mut matches {
689 let filter_start = self.completions[mat.candidate_id].label.filter_range.start;
690 for position in &mut mat.positions {
691 *position += filter_start;
692 }
693 }
694
695 self.matches = matches.into();
696 }
697}
698
699#[derive(Clone)]
700struct CodeActionsMenu {
701 actions: Arc<[CodeAction]>,
702 buffer: ModelHandle<Buffer>,
703 selected_item: usize,
704 list: UniformListState,
705 deployed_from_indicator: bool,
706}
707
708impl CodeActionsMenu {
709 fn select_prev(&mut self, cx: &mut ViewContext<Editor>) {
710 if self.selected_item > 0 {
711 self.selected_item -= 1;
712 cx.notify()
713 }
714 }
715
716 fn select_next(&mut self, cx: &mut ViewContext<Editor>) {
717 if self.selected_item + 1 < self.actions.len() {
718 self.selected_item += 1;
719 cx.notify()
720 }
721 }
722
723 fn visible(&self) -> bool {
724 !self.actions.is_empty()
725 }
726
727 fn render(
728 &self,
729 mut cursor_position: DisplayPoint,
730 style: EditorStyle,
731 ) -> (DisplayPoint, ElementBox) {
732 enum ActionTag {}
733
734 let container_style = style.autocomplete.container;
735 let actions = self.actions.clone();
736 let selected_item = self.selected_item;
737 let element =
738 UniformList::new(self.list.clone(), actions.len(), move |range, items, cx| {
739 let start_ix = range.start;
740 for (ix, action) in actions[range].iter().enumerate() {
741 let item_ix = start_ix + ix;
742 items.push(
743 MouseEventHandler::new::<ActionTag, _, _>(item_ix, cx, |state, _| {
744 let item_style = if item_ix == selected_item {
745 style.autocomplete.selected_item
746 } else if state.hovered {
747 style.autocomplete.hovered_item
748 } else {
749 style.autocomplete.item
750 };
751
752 Text::new(action.lsp_action.title.clone(), style.text.clone())
753 .with_soft_wrap(false)
754 .contained()
755 .with_style(item_style)
756 .boxed()
757 })
758 .with_cursor_style(CursorStyle::PointingHand)
759 .on_mouse_down(move |cx| {
760 cx.dispatch_action(ConfirmCodeAction(Some(item_ix)));
761 })
762 .boxed(),
763 );
764 }
765 })
766 .with_width_from_item(
767 self.actions
768 .iter()
769 .enumerate()
770 .max_by_key(|(_, action)| action.lsp_action.title.chars().count())
771 .map(|(ix, _)| ix),
772 )
773 .contained()
774 .with_style(container_style)
775 .boxed();
776
777 if self.deployed_from_indicator {
778 *cursor_position.column_mut() = 0;
779 }
780
781 (cursor_position, element)
782 }
783}
784
785#[derive(Debug)]
786struct ActiveDiagnosticGroup {
787 primary_range: Range<Anchor>,
788 primary_message: String,
789 blocks: HashMap<BlockId, Diagnostic>,
790 is_valid: bool,
791}
792
793#[derive(Serialize, Deserialize)]
794struct ClipboardSelection {
795 len: usize,
796 is_entire_line: bool,
797}
798
799pub struct NavigationData {
800 anchor: Anchor,
801 offset: usize,
802}
803
804impl Editor {
805 pub fn single_line(
806 field_editor_style: Option<GetFieldEditorTheme>,
807 cx: &mut ViewContext<Self>,
808 ) -> Self {
809 let buffer = cx.add_model(|cx| Buffer::new(0, String::new(), cx));
810 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
811 Self::new(EditorMode::SingleLine, buffer, None, field_editor_style, cx)
812 }
813
814 pub fn auto_height(
815 max_lines: usize,
816 field_editor_style: Option<GetFieldEditorTheme>,
817 cx: &mut ViewContext<Self>,
818 ) -> Self {
819 let buffer = cx.add_model(|cx| Buffer::new(0, String::new(), cx));
820 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
821 Self::new(
822 EditorMode::AutoHeight { max_lines },
823 buffer,
824 None,
825 field_editor_style,
826 cx,
827 )
828 }
829
830 pub fn for_buffer(
831 buffer: ModelHandle<MultiBuffer>,
832 project: Option<ModelHandle<Project>>,
833 cx: &mut ViewContext<Self>,
834 ) -> Self {
835 Self::new(EditorMode::Full, buffer, project, None, cx)
836 }
837
838 pub fn find_or_create(
839 workspace: &mut Workspace,
840 buffer: ModelHandle<Buffer>,
841 cx: &mut ViewContext<Workspace>,
842 ) -> ViewHandle<Editor> {
843 let project = workspace.project().clone();
844
845 if let Some(project_entry) =
846 project::File::from_dyn(buffer.read(cx).file()).and_then(|file| file.project_entry(cx))
847 {
848 return workspace
849 .open_item_for_project_entry(project_entry, cx, |cx| {
850 let multibuffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
851 Editor::for_buffer(multibuffer, Some(project.clone()), cx)
852 })
853 .downcast::<Editor>()
854 .unwrap();
855 }
856
857 let multibuffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
858 let editor = cx.add_view(|cx| Editor::for_buffer(multibuffer, Some(project.clone()), cx));
859 workspace.open_item(Box::new(editor.clone()), cx);
860 editor
861 }
862
863 pub fn clone(&self, cx: &mut ViewContext<Self>) -> Self {
864 let mut clone = Self::new(
865 self.mode,
866 self.buffer.clone(),
867 self.project.clone(),
868 self.get_field_editor_theme,
869 cx,
870 );
871 clone.scroll_position = self.scroll_position;
872 clone.scroll_top_anchor = self.scroll_top_anchor.clone();
873 clone.searchable = self.searchable;
874 clone
875 }
876
877 fn new(
878 mode: EditorMode,
879 buffer: ModelHandle<MultiBuffer>,
880 project: Option<ModelHandle<Project>>,
881 get_field_editor_theme: Option<GetFieldEditorTheme>,
882 cx: &mut ViewContext<Self>,
883 ) -> Self {
884 let display_map = cx.add_model(|cx| {
885 let settings = cx.app_state::<Settings>();
886 let style = build_style(&*settings, get_field_editor_theme, None, cx);
887 DisplayMap::new(
888 buffer.clone(),
889 settings.tab_size,
890 style.text.font_id,
891 style.text.font_size,
892 None,
893 2,
894 1,
895 cx,
896 )
897 });
898 cx.observe(&buffer, Self::on_buffer_changed).detach();
899 cx.subscribe(&buffer, Self::on_buffer_event).detach();
900 cx.observe(&display_map, Self::on_display_map_changed)
901 .detach();
902
903 let mut this = Self {
904 handle: cx.weak_handle(),
905 buffer,
906 display_map,
907 selections: Arc::from([]),
908 pending_selection: Some(PendingSelection {
909 selection: Selection {
910 id: 0,
911 start: Anchor::min(),
912 end: Anchor::min(),
913 reversed: false,
914 goal: SelectionGoal::None,
915 },
916 mode: SelectMode::Character,
917 }),
918 columnar_selection_tail: None,
919 next_selection_id: 1,
920 add_selections_state: None,
921 select_next_state: None,
922 selection_history: Default::default(),
923 autoclose_stack: Default::default(),
924 snippet_stack: Default::default(),
925 select_larger_syntax_node_stack: Vec::new(),
926 active_diagnostics: None,
927 soft_wrap_mode_override: None,
928 get_field_editor_theme,
929 project,
930 scroll_position: Vector2F::zero(),
931 scroll_top_anchor: None,
932 autoscroll_request: None,
933 focused: false,
934 show_local_cursors: false,
935 show_local_selections: true,
936 blink_epoch: 0,
937 blinking_paused: false,
938 mode,
939 vertical_scroll_margin: 3.0,
940 placeholder_text: None,
941 highlighted_rows: None,
942 background_highlights: Default::default(),
943 nav_history: None,
944 context_menu: None,
945 completion_tasks: Default::default(),
946 next_completion_id: 0,
947 available_code_actions: Default::default(),
948 code_actions_task: Default::default(),
949 document_highlights_task: Default::default(),
950 pending_rename: Default::default(),
951 searchable: true,
952 override_text_style: None,
953 cursor_shape: Default::default(),
954 };
955 this.end_selection(cx);
956 this
957 }
958
959 pub fn open_new(
960 workspace: &mut Workspace,
961 _: &workspace::OpenNew,
962 cx: &mut ViewContext<Workspace>,
963 ) {
964 let project = workspace.project().clone();
965 if project.read(cx).is_remote() {
966 cx.propagate_action();
967 } else if let Some(buffer) = project
968 .update(cx, |project, cx| project.create_buffer(cx))
969 .log_err()
970 {
971 let multibuffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
972 workspace.open_item(
973 Box::new(
974 cx.add_view(|cx| Editor::for_buffer(multibuffer, Some(project.clone()), cx)),
975 ),
976 cx,
977 );
978 }
979 }
980
981 pub fn replica_id(&self, cx: &AppContext) -> ReplicaId {
982 self.buffer.read(cx).replica_id()
983 }
984
985 pub fn buffer(&self) -> &ModelHandle<MultiBuffer> {
986 &self.buffer
987 }
988
989 pub fn title(&self, cx: &AppContext) -> String {
990 self.buffer().read(cx).title(cx)
991 }
992
993 pub fn snapshot(&mut self, cx: &mut MutableAppContext) -> EditorSnapshot {
994 EditorSnapshot {
995 mode: self.mode,
996 display_snapshot: self.display_map.update(cx, |map, cx| map.snapshot(cx)),
997 scroll_position: self.scroll_position,
998 scroll_top_anchor: self.scroll_top_anchor.clone(),
999 placeholder_text: self.placeholder_text.clone(),
1000 is_focused: self
1001 .handle
1002 .upgrade(cx)
1003 .map_or(false, |handle| handle.is_focused(cx)),
1004 }
1005 }
1006
1007 pub fn language<'a>(&self, cx: &'a AppContext) -> Option<&'a Arc<Language>> {
1008 self.buffer.read(cx).language(cx)
1009 }
1010
1011 fn style(&self, cx: &AppContext) -> EditorStyle {
1012 build_style(
1013 cx.app_state::<Settings>(),
1014 self.get_field_editor_theme,
1015 self.override_text_style.as_deref(),
1016 cx,
1017 )
1018 }
1019
1020 pub fn set_placeholder_text(
1021 &mut self,
1022 placeholder_text: impl Into<Arc<str>>,
1023 cx: &mut ViewContext<Self>,
1024 ) {
1025 self.placeholder_text = Some(placeholder_text.into());
1026 cx.notify();
1027 }
1028
1029 pub fn set_vertical_scroll_margin(&mut self, margin_rows: usize, cx: &mut ViewContext<Self>) {
1030 self.vertical_scroll_margin = margin_rows as f32;
1031 cx.notify();
1032 }
1033
1034 pub fn set_scroll_position(&mut self, scroll_position: Vector2F, cx: &mut ViewContext<Self>) {
1035 let map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1036
1037 if scroll_position.y() == 0. {
1038 self.scroll_top_anchor = None;
1039 self.scroll_position = scroll_position;
1040 } else {
1041 let scroll_top_buffer_offset =
1042 DisplayPoint::new(scroll_position.y() as u32, 0).to_offset(&map, Bias::Right);
1043 let anchor = map
1044 .buffer_snapshot
1045 .anchor_at(scroll_top_buffer_offset, Bias::Right);
1046 self.scroll_position = vec2f(
1047 scroll_position.x(),
1048 scroll_position.y() - anchor.to_display_point(&map).row() as f32,
1049 );
1050 self.scroll_top_anchor = Some(anchor);
1051 }
1052
1053 cx.notify();
1054 }
1055
1056 pub fn set_cursor_shape(&mut self, cursor_shape: CursorShape, cx: &mut ViewContext<Self>) {
1057 self.cursor_shape = cursor_shape;
1058 cx.notify();
1059 }
1060
1061 pub fn scroll_position(&self, cx: &mut ViewContext<Self>) -> Vector2F {
1062 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1063 compute_scroll_position(&display_map, self.scroll_position, &self.scroll_top_anchor)
1064 }
1065
1066 pub fn clamp_scroll_left(&mut self, max: f32) -> bool {
1067 if max < self.scroll_position.x() {
1068 self.scroll_position.set_x(max);
1069 true
1070 } else {
1071 false
1072 }
1073 }
1074
1075 pub fn autoscroll_vertically(
1076 &mut self,
1077 viewport_height: f32,
1078 line_height: f32,
1079 cx: &mut ViewContext<Self>,
1080 ) -> bool {
1081 let visible_lines = viewport_height / line_height;
1082 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1083 let mut scroll_position =
1084 compute_scroll_position(&display_map, self.scroll_position, &self.scroll_top_anchor);
1085 let max_scroll_top = if matches!(self.mode, EditorMode::AutoHeight { .. }) {
1086 (display_map.max_point().row() as f32 - visible_lines + 1.).max(0.)
1087 } else {
1088 display_map.max_point().row().saturating_sub(1) as f32
1089 };
1090 if scroll_position.y() > max_scroll_top {
1091 scroll_position.set_y(max_scroll_top);
1092 self.set_scroll_position(scroll_position, cx);
1093 }
1094
1095 let autoscroll = if let Some(autoscroll) = self.autoscroll_request.take() {
1096 autoscroll
1097 } else {
1098 return false;
1099 };
1100
1101 let first_cursor_top;
1102 let last_cursor_bottom;
1103 if let Some(highlighted_rows) = &self.highlighted_rows {
1104 first_cursor_top = highlighted_rows.start as f32;
1105 last_cursor_bottom = first_cursor_top + 1.;
1106 } else if autoscroll == Autoscroll::Newest {
1107 let newest_selection =
1108 self.newest_selection_with_snapshot::<Point>(&display_map.buffer_snapshot);
1109 first_cursor_top = newest_selection.head().to_display_point(&display_map).row() as f32;
1110 last_cursor_bottom = first_cursor_top + 1.;
1111 } else {
1112 let selections = self.local_selections::<Point>(cx);
1113 first_cursor_top = selections
1114 .first()
1115 .unwrap()
1116 .head()
1117 .to_display_point(&display_map)
1118 .row() as f32;
1119 last_cursor_bottom = selections
1120 .last()
1121 .unwrap()
1122 .head()
1123 .to_display_point(&display_map)
1124 .row() as f32
1125 + 1.0;
1126 }
1127
1128 let margin = if matches!(self.mode, EditorMode::AutoHeight { .. }) {
1129 0.
1130 } else {
1131 ((visible_lines - (last_cursor_bottom - first_cursor_top)) / 2.0).floor()
1132 };
1133 if margin < 0.0 {
1134 return false;
1135 }
1136
1137 match autoscroll {
1138 Autoscroll::Fit | Autoscroll::Newest => {
1139 let margin = margin.min(self.vertical_scroll_margin);
1140 let target_top = (first_cursor_top - margin).max(0.0);
1141 let target_bottom = last_cursor_bottom + margin;
1142 let start_row = scroll_position.y();
1143 let end_row = start_row + visible_lines;
1144
1145 if target_top < start_row {
1146 scroll_position.set_y(target_top);
1147 self.set_scroll_position(scroll_position, cx);
1148 } else if target_bottom >= end_row {
1149 scroll_position.set_y(target_bottom - visible_lines);
1150 self.set_scroll_position(scroll_position, cx);
1151 }
1152 }
1153 Autoscroll::Center => {
1154 scroll_position.set_y((first_cursor_top - margin).max(0.0));
1155 self.set_scroll_position(scroll_position, cx);
1156 }
1157 }
1158
1159 true
1160 }
1161
1162 pub fn autoscroll_horizontally(
1163 &mut self,
1164 start_row: u32,
1165 viewport_width: f32,
1166 scroll_width: f32,
1167 max_glyph_width: f32,
1168 layouts: &[text_layout::Line],
1169 cx: &mut ViewContext<Self>,
1170 ) -> bool {
1171 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1172 let selections = self.local_selections::<Point>(cx);
1173
1174 let mut target_left;
1175 let mut target_right;
1176
1177 if self.highlighted_rows.is_some() {
1178 target_left = 0.0_f32;
1179 target_right = 0.0_f32;
1180 } else {
1181 target_left = std::f32::INFINITY;
1182 target_right = 0.0_f32;
1183 for selection in selections {
1184 let head = selection.head().to_display_point(&display_map);
1185 if head.row() >= start_row && head.row() < start_row + layouts.len() as u32 {
1186 let start_column = head.column().saturating_sub(3);
1187 let end_column = cmp::min(display_map.line_len(head.row()), head.column() + 3);
1188 target_left = target_left.min(
1189 layouts[(head.row() - start_row) as usize]
1190 .x_for_index(start_column as usize),
1191 );
1192 target_right = target_right.max(
1193 layouts[(head.row() - start_row) as usize].x_for_index(end_column as usize)
1194 + max_glyph_width,
1195 );
1196 }
1197 }
1198 }
1199
1200 target_right = target_right.min(scroll_width);
1201
1202 if target_right - target_left > viewport_width {
1203 return false;
1204 }
1205
1206 let scroll_left = self.scroll_position.x() * max_glyph_width;
1207 let scroll_right = scroll_left + viewport_width;
1208
1209 if target_left < scroll_left {
1210 self.scroll_position.set_x(target_left / max_glyph_width);
1211 true
1212 } else if target_right > scroll_right {
1213 self.scroll_position
1214 .set_x((target_right - viewport_width) / max_glyph_width);
1215 true
1216 } else {
1217 false
1218 }
1219 }
1220
1221 fn select(&mut self, Select(phase): &Select, cx: &mut ViewContext<Self>) {
1222 self.hide_context_menu(cx);
1223
1224 match phase {
1225 SelectPhase::Begin {
1226 position,
1227 add,
1228 click_count,
1229 } => self.begin_selection(*position, *add, *click_count, cx),
1230 SelectPhase::BeginColumnar {
1231 position,
1232 overshoot,
1233 } => self.begin_columnar_selection(*position, *overshoot, cx),
1234 SelectPhase::Extend {
1235 position,
1236 click_count,
1237 } => self.extend_selection(*position, *click_count, cx),
1238 SelectPhase::Update {
1239 position,
1240 overshoot,
1241 scroll_position,
1242 } => self.update_selection(*position, *overshoot, *scroll_position, cx),
1243 SelectPhase::End => self.end_selection(cx),
1244 }
1245 }
1246
1247 fn extend_selection(
1248 &mut self,
1249 position: DisplayPoint,
1250 click_count: usize,
1251 cx: &mut ViewContext<Self>,
1252 ) {
1253 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1254 let tail = self
1255 .newest_selection_with_snapshot::<usize>(&display_map.buffer_snapshot)
1256 .tail();
1257 self.begin_selection(position, false, click_count, cx);
1258
1259 let position = position.to_offset(&display_map, Bias::Left);
1260 let tail_anchor = display_map.buffer_snapshot.anchor_before(tail);
1261 let mut pending = self.pending_selection.clone().unwrap();
1262
1263 if position >= tail {
1264 pending.selection.start = tail_anchor.clone();
1265 } else {
1266 pending.selection.end = tail_anchor.clone();
1267 pending.selection.reversed = true;
1268 }
1269
1270 match &mut pending.mode {
1271 SelectMode::Word(range) | SelectMode::Line(range) => {
1272 *range = tail_anchor.clone()..tail_anchor
1273 }
1274 _ => {}
1275 }
1276
1277 self.set_selections(self.selections.clone(), Some(pending), cx);
1278 }
1279
1280 fn begin_selection(
1281 &mut self,
1282 position: DisplayPoint,
1283 add: bool,
1284 click_count: usize,
1285 cx: &mut ViewContext<Self>,
1286 ) {
1287 if !self.focused {
1288 cx.focus_self();
1289 cx.emit(Event::Activate);
1290 }
1291
1292 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1293 let buffer = &display_map.buffer_snapshot;
1294 let newest_selection = self.newest_anchor_selection().clone();
1295
1296 let start;
1297 let end;
1298 let mode;
1299 match click_count {
1300 1 => {
1301 start = buffer.anchor_before(position.to_point(&display_map));
1302 end = start.clone();
1303 mode = SelectMode::Character;
1304 }
1305 2 => {
1306 let range = movement::surrounding_word(&display_map, position);
1307 start = buffer.anchor_before(range.start.to_point(&display_map));
1308 end = buffer.anchor_before(range.end.to_point(&display_map));
1309 mode = SelectMode::Word(start.clone()..end.clone());
1310 }
1311 3 => {
1312 let position = display_map
1313 .clip_point(position, Bias::Left)
1314 .to_point(&display_map);
1315 let line_start = display_map.prev_line_boundary(position).0;
1316 let next_line_start = buffer.clip_point(
1317 display_map.next_line_boundary(position).0 + Point::new(1, 0),
1318 Bias::Left,
1319 );
1320 start = buffer.anchor_before(line_start);
1321 end = buffer.anchor_before(next_line_start);
1322 mode = SelectMode::Line(start.clone()..end.clone());
1323 }
1324 _ => {
1325 start = buffer.anchor_before(0);
1326 end = buffer.anchor_before(buffer.len());
1327 mode = SelectMode::All;
1328 }
1329 }
1330
1331 self.push_to_nav_history(newest_selection.head(), Some(end.to_point(&buffer)), cx);
1332
1333 let selection = Selection {
1334 id: post_inc(&mut self.next_selection_id),
1335 start,
1336 end,
1337 reversed: false,
1338 goal: SelectionGoal::None,
1339 };
1340
1341 let mut selections;
1342 if add {
1343 selections = self.selections.clone();
1344 // Remove the newest selection if it was added due to a previous mouse up
1345 // within this multi-click.
1346 if click_count > 1 {
1347 selections = self
1348 .selections
1349 .iter()
1350 .filter(|selection| selection.id != newest_selection.id)
1351 .cloned()
1352 .collect();
1353 }
1354 } else {
1355 selections = Arc::from([]);
1356 }
1357 self.set_selections(selections, Some(PendingSelection { selection, mode }), cx);
1358
1359 cx.notify();
1360 }
1361
1362 fn begin_columnar_selection(
1363 &mut self,
1364 position: DisplayPoint,
1365 overshoot: u32,
1366 cx: &mut ViewContext<Self>,
1367 ) {
1368 if !self.focused {
1369 cx.focus_self();
1370 cx.emit(Event::Activate);
1371 }
1372
1373 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1374 let tail = self
1375 .newest_selection_with_snapshot::<Point>(&display_map.buffer_snapshot)
1376 .tail();
1377 self.columnar_selection_tail = Some(display_map.buffer_snapshot.anchor_before(tail));
1378
1379 self.select_columns(
1380 tail.to_display_point(&display_map),
1381 position,
1382 overshoot,
1383 &display_map,
1384 cx,
1385 );
1386 }
1387
1388 fn update_selection(
1389 &mut self,
1390 position: DisplayPoint,
1391 overshoot: u32,
1392 scroll_position: Vector2F,
1393 cx: &mut ViewContext<Self>,
1394 ) {
1395 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1396
1397 if let Some(tail) = self.columnar_selection_tail.as_ref() {
1398 let tail = tail.to_display_point(&display_map);
1399 self.select_columns(tail, position, overshoot, &display_map, cx);
1400 } else if let Some(mut pending) = self.pending_selection.clone() {
1401 let buffer = self.buffer.read(cx).snapshot(cx);
1402 let head;
1403 let tail;
1404 match &pending.mode {
1405 SelectMode::Character => {
1406 head = position.to_point(&display_map);
1407 tail = pending.selection.tail().to_point(&buffer);
1408 }
1409 SelectMode::Word(original_range) => {
1410 let original_display_range = original_range.start.to_display_point(&display_map)
1411 ..original_range.end.to_display_point(&display_map);
1412 let original_buffer_range = original_display_range.start.to_point(&display_map)
1413 ..original_display_range.end.to_point(&display_map);
1414 if movement::is_inside_word(&display_map, position)
1415 || original_display_range.contains(&position)
1416 {
1417 let word_range = movement::surrounding_word(&display_map, position);
1418 if word_range.start < original_display_range.start {
1419 head = word_range.start.to_point(&display_map);
1420 } else {
1421 head = word_range.end.to_point(&display_map);
1422 }
1423 } else {
1424 head = position.to_point(&display_map);
1425 }
1426
1427 if head <= original_buffer_range.start {
1428 tail = original_buffer_range.end;
1429 } else {
1430 tail = original_buffer_range.start;
1431 }
1432 }
1433 SelectMode::Line(original_range) => {
1434 let original_range = original_range.to_point(&display_map.buffer_snapshot);
1435
1436 let position = display_map
1437 .clip_point(position, Bias::Left)
1438 .to_point(&display_map);
1439 let line_start = display_map.prev_line_boundary(position).0;
1440 let next_line_start = buffer.clip_point(
1441 display_map.next_line_boundary(position).0 + Point::new(1, 0),
1442 Bias::Left,
1443 );
1444
1445 if line_start < original_range.start {
1446 head = line_start
1447 } else {
1448 head = next_line_start
1449 }
1450
1451 if head <= original_range.start {
1452 tail = original_range.end;
1453 } else {
1454 tail = original_range.start;
1455 }
1456 }
1457 SelectMode::All => {
1458 return;
1459 }
1460 };
1461
1462 if head < tail {
1463 pending.selection.start = buffer.anchor_before(head);
1464 pending.selection.end = buffer.anchor_before(tail);
1465 pending.selection.reversed = true;
1466 } else {
1467 pending.selection.start = buffer.anchor_before(tail);
1468 pending.selection.end = buffer.anchor_before(head);
1469 pending.selection.reversed = false;
1470 }
1471 self.set_selections(self.selections.clone(), Some(pending), cx);
1472 } else {
1473 log::error!("update_selection dispatched with no pending selection");
1474 return;
1475 }
1476
1477 self.set_scroll_position(scroll_position, cx);
1478 cx.notify();
1479 }
1480
1481 fn end_selection(&mut self, cx: &mut ViewContext<Self>) {
1482 self.columnar_selection_tail.take();
1483 if self.pending_selection.is_some() {
1484 let selections = self.local_selections::<usize>(cx);
1485 self.update_selections(selections, None, cx);
1486 }
1487 }
1488
1489 fn select_columns(
1490 &mut self,
1491 tail: DisplayPoint,
1492 head: DisplayPoint,
1493 overshoot: u32,
1494 display_map: &DisplaySnapshot,
1495 cx: &mut ViewContext<Self>,
1496 ) {
1497 let start_row = cmp::min(tail.row(), head.row());
1498 let end_row = cmp::max(tail.row(), head.row());
1499 let start_column = cmp::min(tail.column(), head.column() + overshoot);
1500 let end_column = cmp::max(tail.column(), head.column() + overshoot);
1501 let reversed = start_column < tail.column();
1502
1503 let selections = (start_row..=end_row)
1504 .filter_map(|row| {
1505 if start_column <= display_map.line_len(row) && !display_map.is_block_line(row) {
1506 let start = display_map
1507 .clip_point(DisplayPoint::new(row, start_column), Bias::Left)
1508 .to_point(&display_map);
1509 let end = display_map
1510 .clip_point(DisplayPoint::new(row, end_column), Bias::Right)
1511 .to_point(&display_map);
1512 Some(Selection {
1513 id: post_inc(&mut self.next_selection_id),
1514 start,
1515 end,
1516 reversed,
1517 goal: SelectionGoal::None,
1518 })
1519 } else {
1520 None
1521 }
1522 })
1523 .collect::<Vec<_>>();
1524
1525 self.update_selections(selections, None, cx);
1526 cx.notify();
1527 }
1528
1529 pub fn is_selecting(&self) -> bool {
1530 self.pending_selection.is_some() || self.columnar_selection_tail.is_some()
1531 }
1532
1533 pub fn cancel(&mut self, _: &Cancel, cx: &mut ViewContext<Self>) {
1534 if self.take_rename(false, cx).is_some() {
1535 return;
1536 }
1537
1538 if self.hide_context_menu(cx).is_some() {
1539 return;
1540 }
1541
1542 if self.snippet_stack.pop().is_some() {
1543 return;
1544 }
1545
1546 if self.mode != EditorMode::Full {
1547 cx.propagate_action();
1548 return;
1549 }
1550
1551 if self.active_diagnostics.is_some() {
1552 self.dismiss_diagnostics(cx);
1553 } else if let Some(pending) = self.pending_selection.clone() {
1554 let mut selections = self.selections.clone();
1555 if selections.is_empty() {
1556 selections = Arc::from([pending.selection]);
1557 }
1558 self.set_selections(selections, None, cx);
1559 self.request_autoscroll(Autoscroll::Fit, cx);
1560 } else {
1561 let mut oldest_selection = self.oldest_selection::<usize>(&cx);
1562 if self.selection_count() == 1 {
1563 if oldest_selection.is_empty() {
1564 cx.propagate_action();
1565 return;
1566 }
1567
1568 oldest_selection.start = oldest_selection.head().clone();
1569 oldest_selection.end = oldest_selection.head().clone();
1570 }
1571 self.update_selections(vec![oldest_selection], Some(Autoscroll::Fit), cx);
1572 }
1573 }
1574
1575 #[cfg(any(test, feature = "test-support"))]
1576 pub fn selected_ranges<D: TextDimension + Ord + Sub<D, Output = D>>(
1577 &self,
1578 cx: &mut MutableAppContext,
1579 ) -> Vec<Range<D>> {
1580 self.local_selections::<D>(cx)
1581 .iter()
1582 .map(|s| {
1583 if s.reversed {
1584 s.end.clone()..s.start.clone()
1585 } else {
1586 s.start.clone()..s.end.clone()
1587 }
1588 })
1589 .collect()
1590 }
1591
1592 #[cfg(any(test, feature = "test-support"))]
1593 pub fn selected_display_ranges(&self, cx: &mut MutableAppContext) -> Vec<Range<DisplayPoint>> {
1594 let display_map = self
1595 .display_map
1596 .update(cx, |display_map, cx| display_map.snapshot(cx));
1597 self.selections
1598 .iter()
1599 .chain(
1600 self.pending_selection
1601 .as_ref()
1602 .map(|pending| &pending.selection),
1603 )
1604 .map(|s| {
1605 if s.reversed {
1606 s.end.to_display_point(&display_map)..s.start.to_display_point(&display_map)
1607 } else {
1608 s.start.to_display_point(&display_map)..s.end.to_display_point(&display_map)
1609 }
1610 })
1611 .collect()
1612 }
1613
1614 pub fn select_ranges<I, T>(
1615 &mut self,
1616 ranges: I,
1617 autoscroll: Option<Autoscroll>,
1618 cx: &mut ViewContext<Self>,
1619 ) where
1620 I: IntoIterator<Item = Range<T>>,
1621 T: ToOffset,
1622 {
1623 let buffer = self.buffer.read(cx).snapshot(cx);
1624 let selections = ranges
1625 .into_iter()
1626 .map(|range| {
1627 let mut start = range.start.to_offset(&buffer);
1628 let mut end = range.end.to_offset(&buffer);
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,
1638 end,
1639 reversed,
1640 goal: SelectionGoal::None,
1641 }
1642 })
1643 .collect::<Vec<_>>();
1644 self.update_selections(selections, autoscroll, cx);
1645 }
1646
1647 #[cfg(any(test, feature = "test-support"))]
1648 pub fn select_display_ranges<'a, T>(&mut self, ranges: T, cx: &mut ViewContext<Self>)
1649 where
1650 T: IntoIterator<Item = &'a Range<DisplayPoint>>,
1651 {
1652 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1653 let selections = ranges
1654 .into_iter()
1655 .map(|range| {
1656 let mut start = range.start;
1657 let mut end = range.end;
1658 let reversed = if start > end {
1659 mem::swap(&mut start, &mut end);
1660 true
1661 } else {
1662 false
1663 };
1664 Selection {
1665 id: post_inc(&mut self.next_selection_id),
1666 start: start.to_point(&display_map),
1667 end: end.to_point(&display_map),
1668 reversed,
1669 goal: SelectionGoal::None,
1670 }
1671 })
1672 .collect();
1673 self.update_selections(selections, None, cx);
1674 }
1675
1676 pub fn handle_input(&mut self, action: &Input, cx: &mut ViewContext<Self>) {
1677 let text = action.0.as_ref();
1678 if !self.skip_autoclose_end(text, cx) {
1679 self.start_transaction(cx);
1680 if !self.surround_with_bracket_pair(text, cx) {
1681 self.insert(text, cx);
1682 self.autoclose_bracket_pairs(cx);
1683 }
1684 self.end_transaction(cx);
1685 self.trigger_completion_on_input(text, cx);
1686 }
1687 }
1688
1689 pub fn newline(&mut self, _: &Newline, cx: &mut ViewContext<Self>) {
1690 self.start_transaction(cx);
1691 let mut old_selections = SmallVec::<[_; 32]>::new();
1692 {
1693 let selections = self.local_selections::<usize>(cx);
1694 let buffer = self.buffer.read(cx).snapshot(cx);
1695 for selection in selections.iter() {
1696 let start_point = selection.start.to_point(&buffer);
1697 let indent = buffer
1698 .indent_column_for_line(start_point.row)
1699 .min(start_point.column);
1700 let start = selection.start;
1701 let end = selection.end;
1702
1703 let mut insert_extra_newline = false;
1704 if let Some(language) = buffer.language() {
1705 let leading_whitespace_len = buffer
1706 .reversed_chars_at(start)
1707 .take_while(|c| c.is_whitespace() && *c != '\n')
1708 .map(|c| c.len_utf8())
1709 .sum::<usize>();
1710
1711 let trailing_whitespace_len = buffer
1712 .chars_at(end)
1713 .take_while(|c| c.is_whitespace() && *c != '\n')
1714 .map(|c| c.len_utf8())
1715 .sum::<usize>();
1716
1717 insert_extra_newline = language.brackets().iter().any(|pair| {
1718 let pair_start = pair.start.trim_end();
1719 let pair_end = pair.end.trim_start();
1720
1721 pair.newline
1722 && buffer.contains_str_at(end + trailing_whitespace_len, pair_end)
1723 && buffer.contains_str_at(
1724 (start - leading_whitespace_len).saturating_sub(pair_start.len()),
1725 pair_start,
1726 )
1727 });
1728 }
1729
1730 old_selections.push((
1731 selection.id,
1732 buffer.anchor_after(end),
1733 start..end,
1734 indent,
1735 insert_extra_newline,
1736 ));
1737 }
1738 }
1739
1740 self.buffer.update(cx, |buffer, cx| {
1741 let mut delta = 0_isize;
1742 let mut pending_edit: Option<PendingEdit> = None;
1743 for (_, _, range, indent, insert_extra_newline) in &old_selections {
1744 if pending_edit.as_ref().map_or(false, |pending| {
1745 pending.indent != *indent
1746 || pending.insert_extra_newline != *insert_extra_newline
1747 }) {
1748 let pending = pending_edit.take().unwrap();
1749 let mut new_text = String::with_capacity(1 + pending.indent as usize);
1750 new_text.push('\n');
1751 new_text.extend(iter::repeat(' ').take(pending.indent as usize));
1752 if pending.insert_extra_newline {
1753 new_text = new_text.repeat(2);
1754 }
1755 buffer.edit_with_autoindent(pending.ranges, new_text, cx);
1756 delta += pending.delta;
1757 }
1758
1759 let start = (range.start as isize + delta) as usize;
1760 let end = (range.end as isize + delta) as usize;
1761 let mut text_len = *indent as usize + 1;
1762 if *insert_extra_newline {
1763 text_len *= 2;
1764 }
1765
1766 let pending = pending_edit.get_or_insert_with(Default::default);
1767 pending.delta += text_len as isize - (end - start) as isize;
1768 pending.indent = *indent;
1769 pending.insert_extra_newline = *insert_extra_newline;
1770 pending.ranges.push(start..end);
1771 }
1772
1773 let pending = pending_edit.unwrap();
1774 let mut new_text = String::with_capacity(1 + pending.indent as usize);
1775 new_text.push('\n');
1776 new_text.extend(iter::repeat(' ').take(pending.indent as usize));
1777 if pending.insert_extra_newline {
1778 new_text = new_text.repeat(2);
1779 }
1780 buffer.edit_with_autoindent(pending.ranges, new_text, cx);
1781
1782 let buffer = buffer.read(cx);
1783 self.selections = self
1784 .selections
1785 .iter()
1786 .cloned()
1787 .zip(old_selections)
1788 .map(
1789 |(mut new_selection, (_, end_anchor, _, _, insert_extra_newline))| {
1790 let mut cursor = end_anchor.to_point(&buffer);
1791 if insert_extra_newline {
1792 cursor.row -= 1;
1793 cursor.column = buffer.line_len(cursor.row);
1794 }
1795 let anchor = buffer.anchor_after(cursor);
1796 new_selection.start = anchor.clone();
1797 new_selection.end = anchor;
1798 new_selection
1799 },
1800 )
1801 .collect();
1802 });
1803
1804 self.request_autoscroll(Autoscroll::Fit, cx);
1805 self.end_transaction(cx);
1806
1807 #[derive(Default)]
1808 struct PendingEdit {
1809 indent: u32,
1810 insert_extra_newline: bool,
1811 delta: isize,
1812 ranges: SmallVec<[Range<usize>; 32]>,
1813 }
1814 }
1815
1816 pub fn insert(&mut self, text: &str, cx: &mut ViewContext<Self>) {
1817 self.start_transaction(cx);
1818
1819 let old_selections = self.local_selections::<usize>(cx);
1820 let selection_anchors = self.buffer.update(cx, |buffer, cx| {
1821 let anchors = {
1822 let snapshot = buffer.read(cx);
1823 old_selections
1824 .iter()
1825 .map(|s| (s.id, s.goal, snapshot.anchor_after(s.end)))
1826 .collect::<Vec<_>>()
1827 };
1828 let edit_ranges = old_selections.iter().map(|s| s.start..s.end);
1829 buffer.edit_with_autoindent(edit_ranges, text, cx);
1830 anchors
1831 });
1832
1833 let selections = {
1834 let snapshot = self.buffer.read(cx).read(cx);
1835 selection_anchors
1836 .into_iter()
1837 .map(|(id, goal, position)| {
1838 let position = position.to_offset(&snapshot);
1839 Selection {
1840 id,
1841 start: position,
1842 end: position,
1843 goal,
1844 reversed: false,
1845 }
1846 })
1847 .collect()
1848 };
1849 self.update_selections(selections, Some(Autoscroll::Fit), cx);
1850 self.end_transaction(cx);
1851 }
1852
1853 fn trigger_completion_on_input(&mut self, text: &str, cx: &mut ViewContext<Self>) {
1854 let selection = self.newest_anchor_selection();
1855 if self
1856 .buffer
1857 .read(cx)
1858 .is_completion_trigger(selection.head(), text, cx)
1859 {
1860 self.show_completions(&ShowCompletions, cx);
1861 } else {
1862 self.hide_context_menu(cx);
1863 }
1864 }
1865
1866 fn surround_with_bracket_pair(&mut self, text: &str, cx: &mut ViewContext<Self>) -> bool {
1867 let snapshot = self.buffer.read(cx).snapshot(cx);
1868 if let Some(pair) = snapshot
1869 .language()
1870 .and_then(|language| language.brackets().iter().find(|b| b.start == text))
1871 .cloned()
1872 {
1873 if self
1874 .local_selections::<usize>(cx)
1875 .iter()
1876 .any(|selection| selection.is_empty())
1877 {
1878 false
1879 } else {
1880 let mut selections = self.selections.to_vec();
1881 for selection in &mut selections {
1882 selection.end = selection.end.bias_left(&snapshot);
1883 }
1884 drop(snapshot);
1885
1886 self.buffer.update(cx, |buffer, cx| {
1887 buffer.edit(
1888 selections.iter().map(|s| s.start.clone()..s.start.clone()),
1889 &pair.start,
1890 cx,
1891 );
1892 buffer.edit(
1893 selections.iter().map(|s| s.end.clone()..s.end.clone()),
1894 &pair.end,
1895 cx,
1896 );
1897 });
1898
1899 let snapshot = self.buffer.read(cx).read(cx);
1900 for selection in &mut selections {
1901 selection.end = selection.end.bias_right(&snapshot);
1902 }
1903 drop(snapshot);
1904
1905 self.set_selections(selections.into(), None, cx);
1906 true
1907 }
1908 } else {
1909 false
1910 }
1911 }
1912
1913 fn autoclose_bracket_pairs(&mut self, cx: &mut ViewContext<Self>) {
1914 let selections = self.local_selections::<usize>(cx);
1915 let mut bracket_pair_state = None;
1916 let mut new_selections = None;
1917 self.buffer.update(cx, |buffer, cx| {
1918 let mut snapshot = buffer.snapshot(cx);
1919 let left_biased_selections = selections
1920 .iter()
1921 .map(|selection| Selection {
1922 id: selection.id,
1923 start: snapshot.anchor_before(selection.start),
1924 end: snapshot.anchor_before(selection.end),
1925 reversed: selection.reversed,
1926 goal: selection.goal,
1927 })
1928 .collect::<Vec<_>>();
1929
1930 let autoclose_pair = snapshot.language().and_then(|language| {
1931 let first_selection_start = selections.first().unwrap().start;
1932 let pair = language.brackets().iter().find(|pair| {
1933 snapshot.contains_str_at(
1934 first_selection_start.saturating_sub(pair.start.len()),
1935 &pair.start,
1936 )
1937 });
1938 pair.and_then(|pair| {
1939 let should_autoclose = selections.iter().all(|selection| {
1940 // Ensure all selections are parked at the end of a pair start.
1941 if snapshot.contains_str_at(
1942 selection.start.saturating_sub(pair.start.len()),
1943 &pair.start,
1944 ) {
1945 snapshot
1946 .chars_at(selection.start)
1947 .next()
1948 .map_or(true, |c| language.should_autoclose_before(c))
1949 } else {
1950 false
1951 }
1952 });
1953
1954 if should_autoclose {
1955 Some(pair.clone())
1956 } else {
1957 None
1958 }
1959 })
1960 });
1961
1962 if let Some(pair) = autoclose_pair {
1963 let selection_ranges = selections
1964 .iter()
1965 .map(|selection| {
1966 let start = selection.start.to_offset(&snapshot);
1967 start..start
1968 })
1969 .collect::<SmallVec<[_; 32]>>();
1970
1971 buffer.edit(selection_ranges, &pair.end, cx);
1972 snapshot = buffer.snapshot(cx);
1973
1974 new_selections = Some(
1975 self.resolve_selections::<usize, _>(left_biased_selections.iter(), &snapshot)
1976 .collect::<Vec<_>>(),
1977 );
1978
1979 if pair.end.len() == 1 {
1980 let mut delta = 0;
1981 bracket_pair_state = Some(BracketPairState {
1982 ranges: selections
1983 .iter()
1984 .map(move |selection| {
1985 let offset = selection.start + delta;
1986 delta += 1;
1987 snapshot.anchor_before(offset)..snapshot.anchor_after(offset)
1988 })
1989 .collect(),
1990 pair,
1991 });
1992 }
1993 }
1994 });
1995
1996 if let Some(new_selections) = new_selections {
1997 self.update_selections(new_selections, None, cx);
1998 }
1999 if let Some(bracket_pair_state) = bracket_pair_state {
2000 self.autoclose_stack.push(bracket_pair_state);
2001 }
2002 }
2003
2004 fn skip_autoclose_end(&mut self, text: &str, cx: &mut ViewContext<Self>) -> bool {
2005 let old_selections = self.local_selections::<usize>(cx);
2006 let autoclose_pair = if let Some(autoclose_pair) = self.autoclose_stack.last() {
2007 autoclose_pair
2008 } else {
2009 return false;
2010 };
2011 if text != autoclose_pair.pair.end {
2012 return false;
2013 }
2014
2015 debug_assert_eq!(old_selections.len(), autoclose_pair.ranges.len());
2016
2017 let buffer = self.buffer.read(cx).snapshot(cx);
2018 if old_selections
2019 .iter()
2020 .zip(autoclose_pair.ranges.iter().map(|r| r.to_offset(&buffer)))
2021 .all(|(selection, autoclose_range)| {
2022 let autoclose_range_end = autoclose_range.end.to_offset(&buffer);
2023 selection.is_empty() && selection.start == autoclose_range_end
2024 })
2025 {
2026 let new_selections = old_selections
2027 .into_iter()
2028 .map(|selection| {
2029 let cursor = selection.start + 1;
2030 Selection {
2031 id: selection.id,
2032 start: cursor,
2033 end: cursor,
2034 reversed: false,
2035 goal: SelectionGoal::None,
2036 }
2037 })
2038 .collect();
2039 self.autoclose_stack.pop();
2040 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
2041 true
2042 } else {
2043 false
2044 }
2045 }
2046
2047 fn completion_query(buffer: &MultiBufferSnapshot, position: impl ToOffset) -> Option<String> {
2048 let offset = position.to_offset(buffer);
2049 let (word_range, kind) = buffer.surrounding_word(offset);
2050 if offset > word_range.start && kind == Some(CharKind::Word) {
2051 Some(
2052 buffer
2053 .text_for_range(word_range.start..offset)
2054 .collect::<String>(),
2055 )
2056 } else {
2057 None
2058 }
2059 }
2060
2061 fn show_completions(&mut self, _: &ShowCompletions, cx: &mut ViewContext<Self>) {
2062 if self.pending_rename.is_some() {
2063 return;
2064 }
2065
2066 let project = if let Some(project) = self.project.clone() {
2067 project
2068 } else {
2069 return;
2070 };
2071
2072 let position = self.newest_anchor_selection().head();
2073 let (buffer, buffer_position) = if let Some(output) = self
2074 .buffer
2075 .read(cx)
2076 .text_anchor_for_position(position.clone(), cx)
2077 {
2078 output
2079 } else {
2080 return;
2081 };
2082
2083 let query = Self::completion_query(&self.buffer.read(cx).read(cx), position.clone());
2084 let completions = project.update(cx, |project, cx| {
2085 project.completions(&buffer, buffer_position.clone(), cx)
2086 });
2087
2088 let id = post_inc(&mut self.next_completion_id);
2089 let task = cx.spawn_weak(|this, mut cx| {
2090 async move {
2091 let completions = completions.await?;
2092 if completions.is_empty() {
2093 return Ok(());
2094 }
2095
2096 let mut menu = CompletionsMenu {
2097 id,
2098 initial_position: position,
2099 match_candidates: completions
2100 .iter()
2101 .enumerate()
2102 .map(|(id, completion)| {
2103 StringMatchCandidate::new(
2104 id,
2105 completion.label.text[completion.label.filter_range.clone()].into(),
2106 )
2107 })
2108 .collect(),
2109 buffer,
2110 completions: completions.into(),
2111 matches: Vec::new().into(),
2112 selected_item: 0,
2113 list: Default::default(),
2114 };
2115
2116 menu.filter(query.as_deref(), cx.background()).await;
2117
2118 if let Some(this) = this.upgrade(&cx) {
2119 this.update(&mut cx, |this, cx| {
2120 match this.context_menu.as_ref() {
2121 None => {}
2122 Some(ContextMenu::Completions(prev_menu)) => {
2123 if prev_menu.id > menu.id {
2124 return;
2125 }
2126 }
2127 _ => return,
2128 }
2129
2130 this.completion_tasks.retain(|(id, _)| *id > menu.id);
2131 if this.focused {
2132 this.show_context_menu(ContextMenu::Completions(menu), cx);
2133 }
2134
2135 cx.notify();
2136 });
2137 }
2138 Ok::<_, anyhow::Error>(())
2139 }
2140 .log_err()
2141 });
2142 self.completion_tasks.push((id, task));
2143 }
2144
2145 pub fn confirm_completion(
2146 &mut self,
2147 ConfirmCompletion(completion_ix): &ConfirmCompletion,
2148 cx: &mut ViewContext<Self>,
2149 ) -> Option<Task<Result<()>>> {
2150 use language::ToOffset as _;
2151
2152 let completions_menu = if let ContextMenu::Completions(menu) = self.hide_context_menu(cx)? {
2153 menu
2154 } else {
2155 return None;
2156 };
2157
2158 let mat = completions_menu
2159 .matches
2160 .get(completion_ix.unwrap_or(completions_menu.selected_item))?;
2161 let buffer_handle = completions_menu.buffer;
2162 let completion = completions_menu.completions.get(mat.candidate_id)?;
2163
2164 let snippet;
2165 let text;
2166 if completion.is_snippet() {
2167 snippet = Some(Snippet::parse(&completion.new_text).log_err()?);
2168 text = snippet.as_ref().unwrap().text.clone();
2169 } else {
2170 snippet = None;
2171 text = completion.new_text.clone();
2172 };
2173 let buffer = buffer_handle.read(cx);
2174 let old_range = completion.old_range.to_offset(&buffer);
2175 let old_text = buffer.text_for_range(old_range.clone()).collect::<String>();
2176
2177 let selections = self.local_selections::<usize>(cx);
2178 let newest_selection = self.newest_anchor_selection();
2179 if newest_selection.start.buffer_id != Some(buffer_handle.id()) {
2180 return None;
2181 }
2182
2183 let lookbehind = newest_selection
2184 .start
2185 .text_anchor
2186 .to_offset(buffer)
2187 .saturating_sub(old_range.start);
2188 let lookahead = old_range
2189 .end
2190 .saturating_sub(newest_selection.end.text_anchor.to_offset(buffer));
2191 let mut common_prefix_len = old_text
2192 .bytes()
2193 .zip(text.bytes())
2194 .take_while(|(a, b)| a == b)
2195 .count();
2196
2197 let snapshot = self.buffer.read(cx).snapshot(cx);
2198 let mut ranges = Vec::new();
2199 for selection in &selections {
2200 if snapshot.contains_str_at(selection.start.saturating_sub(lookbehind), &old_text) {
2201 let start = selection.start.saturating_sub(lookbehind);
2202 let end = selection.end + lookahead;
2203 ranges.push(start + common_prefix_len..end);
2204 } else {
2205 common_prefix_len = 0;
2206 ranges.clear();
2207 ranges.extend(selections.iter().map(|s| {
2208 if s.id == newest_selection.id {
2209 old_range.clone()
2210 } else {
2211 s.start..s.end
2212 }
2213 }));
2214 break;
2215 }
2216 }
2217 let text = &text[common_prefix_len..];
2218
2219 self.start_transaction(cx);
2220 if let Some(mut snippet) = snippet {
2221 snippet.text = text.to_string();
2222 for tabstop in snippet.tabstops.iter_mut().flatten() {
2223 tabstop.start -= common_prefix_len as isize;
2224 tabstop.end -= common_prefix_len as isize;
2225 }
2226
2227 self.insert_snippet(&ranges, snippet, cx).log_err();
2228 } else {
2229 self.buffer.update(cx, |buffer, cx| {
2230 buffer.edit_with_autoindent(ranges, text, cx);
2231 });
2232 }
2233 self.end_transaction(cx);
2234
2235 let project = self.project.clone()?;
2236 let apply_edits = project.update(cx, |project, cx| {
2237 project.apply_additional_edits_for_completion(
2238 buffer_handle,
2239 completion.clone(),
2240 true,
2241 cx,
2242 )
2243 });
2244 Some(cx.foreground().spawn(async move {
2245 apply_edits.await?;
2246 Ok(())
2247 }))
2248 }
2249
2250 pub fn toggle_code_actions(
2251 &mut self,
2252 &ToggleCodeActions(deployed_from_indicator): &ToggleCodeActions,
2253 cx: &mut ViewContext<Self>,
2254 ) {
2255 if matches!(
2256 self.context_menu.as_ref(),
2257 Some(ContextMenu::CodeActions(_))
2258 ) {
2259 self.context_menu.take();
2260 cx.notify();
2261 return;
2262 }
2263
2264 let mut task = self.code_actions_task.take();
2265 cx.spawn_weak(|this, mut cx| async move {
2266 while let Some(prev_task) = task {
2267 prev_task.await;
2268 task = this
2269 .upgrade(&cx)
2270 .and_then(|this| this.update(&mut cx, |this, _| this.code_actions_task.take()));
2271 }
2272
2273 if let Some(this) = this.upgrade(&cx) {
2274 this.update(&mut cx, |this, cx| {
2275 if this.focused {
2276 if let Some((buffer, actions)) = this.available_code_actions.clone() {
2277 this.show_context_menu(
2278 ContextMenu::CodeActions(CodeActionsMenu {
2279 buffer,
2280 actions,
2281 selected_item: Default::default(),
2282 list: Default::default(),
2283 deployed_from_indicator,
2284 }),
2285 cx,
2286 );
2287 }
2288 }
2289 })
2290 }
2291 Ok::<_, anyhow::Error>(())
2292 })
2293 .detach_and_log_err(cx);
2294 }
2295
2296 pub fn confirm_code_action(
2297 workspace: &mut Workspace,
2298 ConfirmCodeAction(action_ix): &ConfirmCodeAction,
2299 cx: &mut ViewContext<Workspace>,
2300 ) -> Option<Task<Result<()>>> {
2301 let editor = workspace.active_item(cx)?.act_as::<Editor>(cx)?;
2302 let actions_menu = if let ContextMenu::CodeActions(menu) =
2303 editor.update(cx, |editor, cx| editor.hide_context_menu(cx))?
2304 {
2305 menu
2306 } else {
2307 return None;
2308 };
2309 let action_ix = action_ix.unwrap_or(actions_menu.selected_item);
2310 let action = actions_menu.actions.get(action_ix)?.clone();
2311 let title = action.lsp_action.title.clone();
2312 let buffer = actions_menu.buffer;
2313
2314 let apply_code_actions = workspace.project().clone().update(cx, |project, cx| {
2315 project.apply_code_action(buffer, action, true, cx)
2316 });
2317 Some(cx.spawn(|workspace, cx| async move {
2318 let project_transaction = apply_code_actions.await?;
2319 Self::open_project_transaction(editor, workspace, project_transaction, title, cx).await
2320 }))
2321 }
2322
2323 async fn open_project_transaction(
2324 this: ViewHandle<Editor>,
2325 workspace: ViewHandle<Workspace>,
2326 transaction: ProjectTransaction,
2327 title: String,
2328 mut cx: AsyncAppContext,
2329 ) -> Result<()> {
2330 let replica_id = this.read_with(&cx, |this, cx| this.replica_id(cx));
2331
2332 // If the code action's edits are all contained within this editor, then
2333 // avoid opening a new editor to display them.
2334 let mut entries = transaction.0.iter();
2335 if let Some((buffer, transaction)) = entries.next() {
2336 if entries.next().is_none() {
2337 let excerpt = this.read_with(&cx, |editor, cx| {
2338 editor
2339 .buffer()
2340 .read(cx)
2341 .excerpt_containing(editor.newest_anchor_selection().head(), cx)
2342 });
2343 if let Some((excerpted_buffer, excerpt_range)) = excerpt {
2344 if excerpted_buffer == *buffer {
2345 let snapshot = buffer.read_with(&cx, |buffer, _| buffer.snapshot());
2346 let excerpt_range = excerpt_range.to_offset(&snapshot);
2347 if snapshot
2348 .edited_ranges_for_transaction(transaction)
2349 .all(|range| {
2350 excerpt_range.start <= range.start && excerpt_range.end >= range.end
2351 })
2352 {
2353 return Ok(());
2354 }
2355 }
2356 }
2357 }
2358 }
2359
2360 let mut ranges_to_highlight = Vec::new();
2361 let excerpt_buffer = cx.add_model(|cx| {
2362 let mut multibuffer = MultiBuffer::new(replica_id).with_title(title);
2363 for (buffer, transaction) in &transaction.0 {
2364 let snapshot = buffer.read(cx).snapshot();
2365 ranges_to_highlight.extend(
2366 multibuffer.push_excerpts_with_context_lines(
2367 buffer.clone(),
2368 snapshot
2369 .edited_ranges_for_transaction::<usize>(transaction)
2370 .collect(),
2371 1,
2372 cx,
2373 ),
2374 );
2375 }
2376 multibuffer.push_transaction(&transaction.0);
2377 multibuffer
2378 });
2379
2380 workspace.update(&mut cx, |workspace, cx| {
2381 let project = workspace.project().clone();
2382 let editor = workspace.open_item(
2383 Box::new(cx.add_view(|cx| Editor::for_buffer(excerpt_buffer, Some(project), cx))),
2384 cx,
2385 );
2386 if let Some(editor) = editor.act_as::<Self>(cx) {
2387 editor.update(cx, |editor, cx| {
2388 let color = editor.style(cx).highlighted_line_background;
2389 editor.highlight_background::<Self>(ranges_to_highlight, color, cx);
2390 });
2391 }
2392 });
2393
2394 Ok(())
2395 }
2396
2397 fn refresh_code_actions(&mut self, cx: &mut ViewContext<Self>) -> Option<()> {
2398 let project = self.project.as_ref()?;
2399 let buffer = self.buffer.read(cx);
2400 let newest_selection = self.newest_anchor_selection().clone();
2401 let (start_buffer, start) = buffer.text_anchor_for_position(newest_selection.start, cx)?;
2402 let (end_buffer, end) = buffer.text_anchor_for_position(newest_selection.end, cx)?;
2403 if start_buffer != end_buffer {
2404 return None;
2405 }
2406
2407 let actions = project.update(cx, |project, cx| {
2408 project.code_actions(&start_buffer, start..end, cx)
2409 });
2410 self.code_actions_task = Some(cx.spawn_weak(|this, mut cx| async move {
2411 let actions = actions.await;
2412 if let Some(this) = this.upgrade(&cx) {
2413 this.update(&mut cx, |this, cx| {
2414 this.available_code_actions = actions.log_err().and_then(|actions| {
2415 if actions.is_empty() {
2416 None
2417 } else {
2418 Some((start_buffer, actions.into()))
2419 }
2420 });
2421 cx.notify();
2422 })
2423 }
2424 }));
2425 None
2426 }
2427
2428 fn refresh_document_highlights(&mut self, cx: &mut ViewContext<Self>) -> Option<()> {
2429 if self.pending_rename.is_some() {
2430 return None;
2431 }
2432
2433 let project = self.project.as_ref()?;
2434 let buffer = self.buffer.read(cx);
2435 let newest_selection = self.newest_anchor_selection().clone();
2436 let cursor_position = newest_selection.head();
2437 let (cursor_buffer, cursor_buffer_position) =
2438 buffer.text_anchor_for_position(cursor_position.clone(), cx)?;
2439 let (tail_buffer, _) = buffer.text_anchor_for_position(newest_selection.tail(), cx)?;
2440 if cursor_buffer != tail_buffer {
2441 return None;
2442 }
2443
2444 let highlights = project.update(cx, |project, cx| {
2445 project.document_highlights(&cursor_buffer, cursor_buffer_position, cx)
2446 });
2447
2448 self.document_highlights_task = Some(cx.spawn_weak(|this, mut cx| async move {
2449 let highlights = highlights.log_err().await;
2450 if let Some((this, highlights)) = this.upgrade(&cx).zip(highlights) {
2451 this.update(&mut cx, |this, cx| {
2452 if this.pending_rename.is_some() {
2453 return;
2454 }
2455
2456 let buffer_id = cursor_position.buffer_id;
2457 let excerpt_id = cursor_position.excerpt_id.clone();
2458 let style = this.style(cx);
2459 let read_background = style.document_highlight_read_background;
2460 let write_background = style.document_highlight_write_background;
2461 let buffer = this.buffer.read(cx);
2462 if !buffer
2463 .text_anchor_for_position(cursor_position, cx)
2464 .map_or(false, |(buffer, _)| buffer == cursor_buffer)
2465 {
2466 return;
2467 }
2468
2469 let mut write_ranges = Vec::new();
2470 let mut read_ranges = Vec::new();
2471 for highlight in highlights {
2472 let range = Anchor {
2473 buffer_id,
2474 excerpt_id: excerpt_id.clone(),
2475 text_anchor: highlight.range.start,
2476 }..Anchor {
2477 buffer_id,
2478 excerpt_id: excerpt_id.clone(),
2479 text_anchor: highlight.range.end,
2480 };
2481 if highlight.kind == lsp::DocumentHighlightKind::WRITE {
2482 write_ranges.push(range);
2483 } else {
2484 read_ranges.push(range);
2485 }
2486 }
2487
2488 this.highlight_background::<DocumentHighlightRead>(
2489 read_ranges,
2490 read_background,
2491 cx,
2492 );
2493 this.highlight_background::<DocumentHighlightWrite>(
2494 write_ranges,
2495 write_background,
2496 cx,
2497 );
2498 cx.notify();
2499 });
2500 }
2501 }));
2502 None
2503 }
2504
2505 pub fn render_code_actions_indicator(
2506 &self,
2507 style: &EditorStyle,
2508 cx: &mut ViewContext<Self>,
2509 ) -> Option<ElementBox> {
2510 if self.available_code_actions.is_some() {
2511 enum Tag {}
2512 Some(
2513 MouseEventHandler::new::<Tag, _, _>(0, cx, |_, _| {
2514 Svg::new("icons/zap.svg")
2515 .with_color(style.code_actions_indicator)
2516 .boxed()
2517 })
2518 .with_cursor_style(CursorStyle::PointingHand)
2519 .with_padding(Padding::uniform(3.))
2520 .on_mouse_down(|cx| {
2521 cx.dispatch_action(ToggleCodeActions(true));
2522 })
2523 .boxed(),
2524 )
2525 } else {
2526 None
2527 }
2528 }
2529
2530 pub fn context_menu_visible(&self) -> bool {
2531 self.context_menu
2532 .as_ref()
2533 .map_or(false, |menu| menu.visible())
2534 }
2535
2536 pub fn render_context_menu(
2537 &self,
2538 cursor_position: DisplayPoint,
2539 style: EditorStyle,
2540 cx: &AppContext,
2541 ) -> Option<(DisplayPoint, ElementBox)> {
2542 self.context_menu
2543 .as_ref()
2544 .map(|menu| menu.render(cursor_position, style, cx))
2545 }
2546
2547 fn show_context_menu(&mut self, menu: ContextMenu, cx: &mut ViewContext<Self>) {
2548 if !matches!(menu, ContextMenu::Completions(_)) {
2549 self.completion_tasks.clear();
2550 }
2551 self.context_menu = Some(menu);
2552 cx.notify();
2553 }
2554
2555 fn hide_context_menu(&mut self, cx: &mut ViewContext<Self>) -> Option<ContextMenu> {
2556 cx.notify();
2557 self.completion_tasks.clear();
2558 self.context_menu.take()
2559 }
2560
2561 pub fn insert_snippet(
2562 &mut self,
2563 insertion_ranges: &[Range<usize>],
2564 snippet: Snippet,
2565 cx: &mut ViewContext<Self>,
2566 ) -> Result<()> {
2567 let tabstops = self.buffer.update(cx, |buffer, cx| {
2568 buffer.edit_with_autoindent(insertion_ranges.iter().cloned(), &snippet.text, cx);
2569
2570 let snapshot = &*buffer.read(cx);
2571 let snippet = &snippet;
2572 snippet
2573 .tabstops
2574 .iter()
2575 .map(|tabstop| {
2576 let mut tabstop_ranges = tabstop
2577 .iter()
2578 .flat_map(|tabstop_range| {
2579 let mut delta = 0 as isize;
2580 insertion_ranges.iter().map(move |insertion_range| {
2581 let insertion_start = insertion_range.start as isize + delta;
2582 delta +=
2583 snippet.text.len() as isize - insertion_range.len() as isize;
2584
2585 let start = snapshot.anchor_before(
2586 (insertion_start + tabstop_range.start) as usize,
2587 );
2588 let end = snapshot
2589 .anchor_after((insertion_start + tabstop_range.end) as usize);
2590 start..end
2591 })
2592 })
2593 .collect::<Vec<_>>();
2594 tabstop_ranges
2595 .sort_unstable_by(|a, b| a.start.cmp(&b.start, snapshot).unwrap());
2596 tabstop_ranges
2597 })
2598 .collect::<Vec<_>>()
2599 });
2600
2601 if let Some(tabstop) = tabstops.first() {
2602 self.select_ranges(tabstop.iter().cloned(), Some(Autoscroll::Fit), cx);
2603 self.snippet_stack.push(SnippetState {
2604 active_index: 0,
2605 ranges: tabstops,
2606 });
2607 }
2608
2609 Ok(())
2610 }
2611
2612 pub fn move_to_next_snippet_tabstop(&mut self, cx: &mut ViewContext<Self>) -> bool {
2613 self.move_to_snippet_tabstop(Bias::Right, cx)
2614 }
2615
2616 pub fn move_to_prev_snippet_tabstop(&mut self, cx: &mut ViewContext<Self>) {
2617 self.move_to_snippet_tabstop(Bias::Left, cx);
2618 }
2619
2620 pub fn move_to_snippet_tabstop(&mut self, bias: Bias, cx: &mut ViewContext<Self>) -> bool {
2621 let buffer = self.buffer.read(cx).snapshot(cx);
2622
2623 if let Some(snippet) = self.snippet_stack.last_mut() {
2624 match bias {
2625 Bias::Left => {
2626 if snippet.active_index > 0 {
2627 snippet.active_index -= 1;
2628 } else {
2629 return false;
2630 }
2631 }
2632 Bias::Right => {
2633 if snippet.active_index + 1 < snippet.ranges.len() {
2634 snippet.active_index += 1;
2635 } else {
2636 return false;
2637 }
2638 }
2639 }
2640 if let Some(current_ranges) = snippet.ranges.get(snippet.active_index) {
2641 let new_selections = current_ranges
2642 .iter()
2643 .map(|new_range| {
2644 let new_range = new_range.to_offset(&buffer);
2645 Selection {
2646 id: post_inc(&mut self.next_selection_id),
2647 start: new_range.start,
2648 end: new_range.end,
2649 reversed: false,
2650 goal: SelectionGoal::None,
2651 }
2652 })
2653 .collect();
2654
2655 // Remove the snippet state when moving to the last tabstop.
2656 if snippet.active_index + 1 == snippet.ranges.len() {
2657 self.snippet_stack.pop();
2658 }
2659
2660 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
2661 return true;
2662 }
2663 self.snippet_stack.pop();
2664 }
2665
2666 false
2667 }
2668
2669 pub fn clear(&mut self, cx: &mut ViewContext<Self>) {
2670 self.start_transaction(cx);
2671 self.select_all(&SelectAll, cx);
2672 self.insert("", cx);
2673 self.end_transaction(cx);
2674 }
2675
2676 pub fn backspace(&mut self, _: &Backspace, cx: &mut ViewContext<Self>) {
2677 self.start_transaction(cx);
2678 let mut selections = self.local_selections::<Point>(cx);
2679 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2680 for selection in &mut selections {
2681 if selection.is_empty() {
2682 let old_head = selection.head();
2683 let mut new_head =
2684 movement::left(&display_map, old_head.to_display_point(&display_map))
2685 .unwrap()
2686 .to_point(&display_map);
2687 if let Some((buffer, line_buffer_range)) = display_map
2688 .buffer_snapshot
2689 .buffer_line_for_row(old_head.row)
2690 {
2691 let indent_column = buffer.indent_column_for_line(line_buffer_range.start.row);
2692 if old_head.column <= indent_column && old_head.column > 0 {
2693 let indent = buffer.indent_size();
2694 new_head = cmp::min(
2695 new_head,
2696 Point::new(old_head.row, ((old_head.column - 1) / indent) * indent),
2697 );
2698 }
2699 }
2700
2701 selection.set_head(new_head);
2702 selection.goal = SelectionGoal::None;
2703 }
2704 }
2705 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2706 self.insert("", cx);
2707 self.end_transaction(cx);
2708 }
2709
2710 pub fn delete(&mut self, _: &Delete, cx: &mut ViewContext<Self>) {
2711 self.start_transaction(cx);
2712 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2713 let mut selections = self.local_selections::<Point>(cx);
2714 for selection in &mut selections {
2715 if selection.is_empty() {
2716 let head = selection.head().to_display_point(&display_map);
2717 let cursor = movement::right(&display_map, head)
2718 .unwrap()
2719 .to_point(&display_map);
2720 selection.set_head(cursor);
2721 selection.goal = SelectionGoal::None;
2722 }
2723 }
2724 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2725 self.insert(&"", cx);
2726 self.end_transaction(cx);
2727 }
2728
2729 pub fn tab(&mut self, _: &Tab, cx: &mut ViewContext<Self>) {
2730 if self.move_to_next_snippet_tabstop(cx) {
2731 return;
2732 }
2733
2734 self.start_transaction(cx);
2735 let tab_size = cx.app_state::<Settings>().tab_size;
2736 let mut selections = self.local_selections::<Point>(cx);
2737 let mut last_indent = None;
2738 self.buffer.update(cx, |buffer, cx| {
2739 for selection in &mut selections {
2740 if selection.is_empty() {
2741 let char_column = buffer
2742 .read(cx)
2743 .text_for_range(Point::new(selection.start.row, 0)..selection.start)
2744 .flat_map(str::chars)
2745 .count();
2746 let chars_to_next_tab_stop = tab_size - (char_column % tab_size);
2747 buffer.edit(
2748 [selection.start..selection.start],
2749 " ".repeat(chars_to_next_tab_stop),
2750 cx,
2751 );
2752 selection.start.column += chars_to_next_tab_stop as u32;
2753 selection.end = selection.start;
2754 } else {
2755 let mut start_row = selection.start.row;
2756 let mut end_row = selection.end.row + 1;
2757
2758 // If a selection ends at the beginning of a line, don't indent
2759 // that last line.
2760 if selection.end.column == 0 {
2761 end_row -= 1;
2762 }
2763
2764 // Avoid re-indenting a row that has already been indented by a
2765 // previous selection, but still update this selection's column
2766 // to reflect that indentation.
2767 if let Some((last_indent_row, last_indent_len)) = last_indent {
2768 if last_indent_row == selection.start.row {
2769 selection.start.column += last_indent_len;
2770 start_row += 1;
2771 }
2772 if last_indent_row == selection.end.row {
2773 selection.end.column += last_indent_len;
2774 }
2775 }
2776
2777 for row in start_row..end_row {
2778 let indent_column = buffer.read(cx).indent_column_for_line(row) as usize;
2779 let columns_to_next_tab_stop = tab_size - (indent_column % tab_size);
2780 let row_start = Point::new(row, 0);
2781 buffer.edit(
2782 [row_start..row_start],
2783 " ".repeat(columns_to_next_tab_stop),
2784 cx,
2785 );
2786
2787 // Update this selection's endpoints to reflect the indentation.
2788 if row == selection.start.row {
2789 selection.start.column += columns_to_next_tab_stop as u32;
2790 }
2791 if row == selection.end.row {
2792 selection.end.column += columns_to_next_tab_stop as u32;
2793 }
2794
2795 last_indent = Some((row, columns_to_next_tab_stop as u32));
2796 }
2797 }
2798 }
2799 });
2800
2801 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2802 self.end_transaction(cx);
2803 }
2804
2805 pub fn outdent(&mut self, _: &Outdent, cx: &mut ViewContext<Self>) {
2806 if !self.snippet_stack.is_empty() {
2807 self.move_to_prev_snippet_tabstop(cx);
2808 return;
2809 }
2810
2811 self.start_transaction(cx);
2812 let tab_size = cx.app_state::<Settings>().tab_size;
2813 let selections = self.local_selections::<Point>(cx);
2814 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2815 let mut deletion_ranges = Vec::new();
2816 let mut last_outdent = None;
2817 {
2818 let buffer = self.buffer.read(cx).read(cx);
2819 for selection in &selections {
2820 let mut rows = selection.spanned_rows(false, &display_map);
2821
2822 // Avoid re-outdenting a row that has already been outdented by a
2823 // previous selection.
2824 if let Some(last_row) = last_outdent {
2825 if last_row == rows.start {
2826 rows.start += 1;
2827 }
2828 }
2829
2830 for row in rows {
2831 let column = buffer.indent_column_for_line(row) as usize;
2832 if column > 0 {
2833 let mut deletion_len = (column % tab_size) as u32;
2834 if deletion_len == 0 {
2835 deletion_len = tab_size as u32;
2836 }
2837 deletion_ranges.push(Point::new(row, 0)..Point::new(row, deletion_len));
2838 last_outdent = Some(row);
2839 }
2840 }
2841 }
2842 }
2843 self.buffer.update(cx, |buffer, cx| {
2844 buffer.edit(deletion_ranges, "", cx);
2845 });
2846
2847 self.update_selections(
2848 self.local_selections::<usize>(cx),
2849 Some(Autoscroll::Fit),
2850 cx,
2851 );
2852 self.end_transaction(cx);
2853 }
2854
2855 pub fn delete_line(&mut self, _: &DeleteLine, cx: &mut ViewContext<Self>) {
2856 self.start_transaction(cx);
2857
2858 let selections = self.local_selections::<Point>(cx);
2859 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2860 let buffer = self.buffer.read(cx).snapshot(cx);
2861
2862 let mut new_cursors = Vec::new();
2863 let mut edit_ranges = Vec::new();
2864 let mut selections = selections.iter().peekable();
2865 while let Some(selection) = selections.next() {
2866 let mut rows = selection.spanned_rows(false, &display_map);
2867 let goal_display_column = selection.head().to_display_point(&display_map).column();
2868
2869 // Accumulate contiguous regions of rows that we want to delete.
2870 while let Some(next_selection) = selections.peek() {
2871 let next_rows = next_selection.spanned_rows(false, &display_map);
2872 if next_rows.start <= rows.end {
2873 rows.end = next_rows.end;
2874 selections.next().unwrap();
2875 } else {
2876 break;
2877 }
2878 }
2879
2880 let mut edit_start = Point::new(rows.start, 0).to_offset(&buffer);
2881 let edit_end;
2882 let cursor_buffer_row;
2883 if buffer.max_point().row >= rows.end {
2884 // If there's a line after the range, delete the \n from the end of the row range
2885 // and position the cursor on the next line.
2886 edit_end = Point::new(rows.end, 0).to_offset(&buffer);
2887 cursor_buffer_row = rows.end;
2888 } else {
2889 // If there isn't a line after the range, delete the \n from the line before the
2890 // start of the row range and position the cursor there.
2891 edit_start = edit_start.saturating_sub(1);
2892 edit_end = buffer.len();
2893 cursor_buffer_row = rows.start.saturating_sub(1);
2894 }
2895
2896 let mut cursor = Point::new(cursor_buffer_row, 0).to_display_point(&display_map);
2897 *cursor.column_mut() =
2898 cmp::min(goal_display_column, display_map.line_len(cursor.row()));
2899
2900 new_cursors.push((
2901 selection.id,
2902 buffer.anchor_after(cursor.to_point(&display_map)),
2903 ));
2904 edit_ranges.push(edit_start..edit_end);
2905 }
2906
2907 let buffer = self.buffer.update(cx, |buffer, cx| {
2908 buffer.edit(edit_ranges, "", cx);
2909 buffer.snapshot(cx)
2910 });
2911 let new_selections = new_cursors
2912 .into_iter()
2913 .map(|(id, cursor)| {
2914 let cursor = cursor.to_point(&buffer);
2915 Selection {
2916 id,
2917 start: cursor,
2918 end: cursor,
2919 reversed: false,
2920 goal: SelectionGoal::None,
2921 }
2922 })
2923 .collect();
2924 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
2925 self.end_transaction(cx);
2926 }
2927
2928 pub fn duplicate_line(&mut self, _: &DuplicateLine, cx: &mut ViewContext<Self>) {
2929 self.start_transaction(cx);
2930
2931 let selections = self.local_selections::<Point>(cx);
2932 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2933 let buffer = &display_map.buffer_snapshot;
2934
2935 let mut edits = Vec::new();
2936 let mut selections_iter = selections.iter().peekable();
2937 while let Some(selection) = selections_iter.next() {
2938 // Avoid duplicating the same lines twice.
2939 let mut rows = selection.spanned_rows(false, &display_map);
2940
2941 while let Some(next_selection) = selections_iter.peek() {
2942 let next_rows = next_selection.spanned_rows(false, &display_map);
2943 if next_rows.start <= rows.end - 1 {
2944 rows.end = next_rows.end;
2945 selections_iter.next().unwrap();
2946 } else {
2947 break;
2948 }
2949 }
2950
2951 // Copy the text from the selected row region and splice it at the start of the region.
2952 let start = Point::new(rows.start, 0);
2953 let end = Point::new(rows.end - 1, buffer.line_len(rows.end - 1));
2954 let text = buffer
2955 .text_for_range(start..end)
2956 .chain(Some("\n"))
2957 .collect::<String>();
2958 edits.push((start, text, rows.len() as u32));
2959 }
2960
2961 self.buffer.update(cx, |buffer, cx| {
2962 for (point, text, _) in edits.into_iter().rev() {
2963 buffer.edit(Some(point..point), text, cx);
2964 }
2965 });
2966
2967 self.request_autoscroll(Autoscroll::Fit, cx);
2968 self.end_transaction(cx);
2969 }
2970
2971 pub fn move_line_up(&mut self, _: &MoveLineUp, cx: &mut ViewContext<Self>) {
2972 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2973 let buffer = self.buffer.read(cx).snapshot(cx);
2974
2975 let mut edits = Vec::new();
2976 let mut unfold_ranges = Vec::new();
2977 let mut refold_ranges = Vec::new();
2978
2979 let selections = self.local_selections::<Point>(cx);
2980 let mut selections = selections.iter().peekable();
2981 let mut contiguous_row_selections = Vec::new();
2982 let mut new_selections = Vec::new();
2983
2984 while let Some(selection) = selections.next() {
2985 // Find all the selections that span a contiguous row range
2986 contiguous_row_selections.push(selection.clone());
2987 let start_row = selection.start.row;
2988 let mut end_row = if selection.end.column > 0 || selection.is_empty() {
2989 display_map.next_line_boundary(selection.end).0.row + 1
2990 } else {
2991 selection.end.row
2992 };
2993
2994 while let Some(next_selection) = selections.peek() {
2995 if next_selection.start.row <= end_row {
2996 end_row = if next_selection.end.column > 0 || next_selection.is_empty() {
2997 display_map.next_line_boundary(next_selection.end).0.row + 1
2998 } else {
2999 next_selection.end.row
3000 };
3001 contiguous_row_selections.push(selections.next().unwrap().clone());
3002 } else {
3003 break;
3004 }
3005 }
3006
3007 // Move the text spanned by the row range to be before the line preceding the row range
3008 if start_row > 0 {
3009 let range_to_move = Point::new(start_row - 1, buffer.line_len(start_row - 1))
3010 ..Point::new(end_row - 1, buffer.line_len(end_row - 1));
3011 let insertion_point = display_map
3012 .prev_line_boundary(Point::new(start_row - 1, 0))
3013 .0;
3014
3015 // Don't move lines across excerpts
3016 if buffer
3017 .excerpt_boundaries_in_range((
3018 Bound::Excluded(insertion_point),
3019 Bound::Included(range_to_move.end),
3020 ))
3021 .next()
3022 .is_none()
3023 {
3024 let text = buffer
3025 .text_for_range(range_to_move.clone())
3026 .flat_map(|s| s.chars())
3027 .skip(1)
3028 .chain(['\n'])
3029 .collect::<String>();
3030
3031 edits.push((
3032 buffer.anchor_after(range_to_move.start)
3033 ..buffer.anchor_before(range_to_move.end),
3034 String::new(),
3035 ));
3036 let insertion_anchor = buffer.anchor_after(insertion_point);
3037 edits.push((insertion_anchor.clone()..insertion_anchor, text));
3038
3039 let row_delta = range_to_move.start.row - insertion_point.row + 1;
3040
3041 // Move selections up
3042 new_selections.extend(contiguous_row_selections.drain(..).map(
3043 |mut selection| {
3044 selection.start.row -= row_delta;
3045 selection.end.row -= row_delta;
3046 selection
3047 },
3048 ));
3049
3050 // Move folds up
3051 unfold_ranges.push(range_to_move.clone());
3052 for fold in display_map.folds_in_range(
3053 buffer.anchor_before(range_to_move.start)
3054 ..buffer.anchor_after(range_to_move.end),
3055 ) {
3056 let mut start = fold.start.to_point(&buffer);
3057 let mut end = fold.end.to_point(&buffer);
3058 start.row -= row_delta;
3059 end.row -= row_delta;
3060 refold_ranges.push(start..end);
3061 }
3062 }
3063 }
3064
3065 // If we didn't move line(s), preserve the existing selections
3066 new_selections.extend(contiguous_row_selections.drain(..));
3067 }
3068
3069 self.start_transaction(cx);
3070 self.unfold_ranges(unfold_ranges, cx);
3071 self.buffer.update(cx, |buffer, cx| {
3072 for (range, text) in edits {
3073 buffer.edit([range], text, cx);
3074 }
3075 });
3076 self.fold_ranges(refold_ranges, cx);
3077 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
3078 self.end_transaction(cx);
3079 }
3080
3081 pub fn move_line_down(&mut self, _: &MoveLineDown, cx: &mut ViewContext<Self>) {
3082 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3083 let buffer = self.buffer.read(cx).snapshot(cx);
3084
3085 let mut edits = Vec::new();
3086 let mut unfold_ranges = Vec::new();
3087 let mut refold_ranges = Vec::new();
3088
3089 let selections = self.local_selections::<Point>(cx);
3090 let mut selections = selections.iter().peekable();
3091 let mut contiguous_row_selections = Vec::new();
3092 let mut new_selections = Vec::new();
3093
3094 while let Some(selection) = selections.next() {
3095 // Find all the selections that span a contiguous row range
3096 contiguous_row_selections.push(selection.clone());
3097 let start_row = selection.start.row;
3098 let mut end_row = if selection.end.column > 0 || selection.is_empty() {
3099 display_map.next_line_boundary(selection.end).0.row + 1
3100 } else {
3101 selection.end.row
3102 };
3103
3104 while let Some(next_selection) = selections.peek() {
3105 if next_selection.start.row <= end_row {
3106 end_row = if next_selection.end.column > 0 || next_selection.is_empty() {
3107 display_map.next_line_boundary(next_selection.end).0.row + 1
3108 } else {
3109 next_selection.end.row
3110 };
3111 contiguous_row_selections.push(selections.next().unwrap().clone());
3112 } else {
3113 break;
3114 }
3115 }
3116
3117 // Move the text spanned by the row range to be after the last line of the row range
3118 if end_row <= buffer.max_point().row {
3119 let range_to_move = Point::new(start_row, 0)..Point::new(end_row, 0);
3120 let insertion_point = display_map.next_line_boundary(Point::new(end_row, 0)).0;
3121
3122 // Don't move lines across excerpt boundaries
3123 if buffer
3124 .excerpt_boundaries_in_range((
3125 Bound::Excluded(range_to_move.start),
3126 Bound::Included(insertion_point),
3127 ))
3128 .next()
3129 .is_none()
3130 {
3131 let mut text = String::from("\n");
3132 text.extend(buffer.text_for_range(range_to_move.clone()));
3133 text.pop(); // Drop trailing newline
3134 edits.push((
3135 buffer.anchor_after(range_to_move.start)
3136 ..buffer.anchor_before(range_to_move.end),
3137 String::new(),
3138 ));
3139 let insertion_anchor = buffer.anchor_after(insertion_point);
3140 edits.push((insertion_anchor.clone()..insertion_anchor, text));
3141
3142 let row_delta = insertion_point.row - range_to_move.end.row + 1;
3143
3144 // Move selections down
3145 new_selections.extend(contiguous_row_selections.drain(..).map(
3146 |mut selection| {
3147 selection.start.row += row_delta;
3148 selection.end.row += row_delta;
3149 selection
3150 },
3151 ));
3152
3153 // Move folds down
3154 unfold_ranges.push(range_to_move.clone());
3155 for fold in display_map.folds_in_range(
3156 buffer.anchor_before(range_to_move.start)
3157 ..buffer.anchor_after(range_to_move.end),
3158 ) {
3159 let mut start = fold.start.to_point(&buffer);
3160 let mut end = fold.end.to_point(&buffer);
3161 start.row += row_delta;
3162 end.row += row_delta;
3163 refold_ranges.push(start..end);
3164 }
3165 }
3166 }
3167
3168 // If we didn't move line(s), preserve the existing selections
3169 new_selections.extend(contiguous_row_selections.drain(..));
3170 }
3171
3172 self.start_transaction(cx);
3173 self.unfold_ranges(unfold_ranges, cx);
3174 self.buffer.update(cx, |buffer, cx| {
3175 for (range, text) in edits {
3176 buffer.edit([range], text, cx);
3177 }
3178 });
3179 self.fold_ranges(refold_ranges, cx);
3180 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
3181 self.end_transaction(cx);
3182 }
3183
3184 pub fn cut(&mut self, _: &Cut, cx: &mut ViewContext<Self>) {
3185 self.start_transaction(cx);
3186 let mut text = String::new();
3187 let mut selections = self.local_selections::<Point>(cx);
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 &mut selections {
3193 let is_entire_line = selection.is_empty();
3194 if is_entire_line {
3195 selection.start = Point::new(selection.start.row, 0);
3196 selection.end = cmp::min(max_point, Point::new(selection.end.row + 1, 0));
3197 selection.goal = SelectionGoal::None;
3198 }
3199 let mut len = 0;
3200 for chunk in buffer.text_for_range(selection.start..selection.end) {
3201 text.push_str(chunk);
3202 len += chunk.len();
3203 }
3204 clipboard_selections.push(ClipboardSelection {
3205 len,
3206 is_entire_line,
3207 });
3208 }
3209 }
3210 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3211 self.insert("", cx);
3212 self.end_transaction(cx);
3213
3214 cx.as_mut()
3215 .write_to_clipboard(ClipboardItem::new(text).with_metadata(clipboard_selections));
3216 }
3217
3218 pub fn copy(&mut self, _: &Copy, cx: &mut ViewContext<Self>) {
3219 let selections = self.local_selections::<Point>(cx);
3220 let mut text = String::new();
3221 let mut clipboard_selections = Vec::with_capacity(selections.len());
3222 {
3223 let buffer = self.buffer.read(cx).read(cx);
3224 let max_point = buffer.max_point();
3225 for selection in selections.iter() {
3226 let mut start = selection.start;
3227 let mut end = selection.end;
3228 let is_entire_line = selection.is_empty();
3229 if is_entire_line {
3230 start = Point::new(start.row, 0);
3231 end = cmp::min(max_point, Point::new(start.row + 1, 0));
3232 }
3233 let mut len = 0;
3234 for chunk in buffer.text_for_range(start..end) {
3235 text.push_str(chunk);
3236 len += chunk.len();
3237 }
3238 clipboard_selections.push(ClipboardSelection {
3239 len,
3240 is_entire_line,
3241 });
3242 }
3243 }
3244
3245 cx.as_mut()
3246 .write_to_clipboard(ClipboardItem::new(text).with_metadata(clipboard_selections));
3247 }
3248
3249 pub fn paste(&mut self, _: &Paste, cx: &mut ViewContext<Self>) {
3250 if let Some(item) = cx.as_mut().read_from_clipboard() {
3251 let clipboard_text = item.text();
3252 if let Some(mut clipboard_selections) = item.metadata::<Vec<ClipboardSelection>>() {
3253 let mut selections = self.local_selections::<usize>(cx);
3254 let all_selections_were_entire_line =
3255 clipboard_selections.iter().all(|s| s.is_entire_line);
3256 if clipboard_selections.len() != selections.len() {
3257 clipboard_selections.clear();
3258 }
3259
3260 let mut delta = 0_isize;
3261 let mut start_offset = 0;
3262 for (i, selection) in selections.iter_mut().enumerate() {
3263 let to_insert;
3264 let entire_line;
3265 if let Some(clipboard_selection) = clipboard_selections.get(i) {
3266 let end_offset = start_offset + clipboard_selection.len;
3267 to_insert = &clipboard_text[start_offset..end_offset];
3268 entire_line = clipboard_selection.is_entire_line;
3269 start_offset = end_offset
3270 } else {
3271 to_insert = clipboard_text.as_str();
3272 entire_line = all_selections_were_entire_line;
3273 }
3274
3275 selection.start = (selection.start as isize + delta) as usize;
3276 selection.end = (selection.end as isize + delta) as usize;
3277
3278 self.buffer.update(cx, |buffer, cx| {
3279 // If the corresponding selection was empty when this slice of the
3280 // clipboard text was written, then the entire line containing the
3281 // selection was copied. If this selection is also currently empty,
3282 // then paste the line before the current line of the buffer.
3283 let range = if selection.is_empty() && entire_line {
3284 let column = selection.start.to_point(&buffer.read(cx)).column as usize;
3285 let line_start = selection.start - column;
3286 line_start..line_start
3287 } else {
3288 selection.start..selection.end
3289 };
3290
3291 delta += to_insert.len() as isize - range.len() as isize;
3292 buffer.edit([range], to_insert, cx);
3293 selection.start += to_insert.len();
3294 selection.end = selection.start;
3295 });
3296 }
3297 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3298 } else {
3299 self.insert(clipboard_text, cx);
3300 }
3301 }
3302 }
3303
3304 pub fn undo(&mut self, _: &Undo, cx: &mut ViewContext<Self>) {
3305 if let Some(tx_id) = self.buffer.update(cx, |buffer, cx| buffer.undo(cx)) {
3306 if let Some((selections, _)) = self.selection_history.get(&tx_id).cloned() {
3307 self.set_selections(selections, None, cx);
3308 }
3309 self.request_autoscroll(Autoscroll::Fit, cx);
3310 }
3311 }
3312
3313 pub fn redo(&mut self, _: &Redo, cx: &mut ViewContext<Self>) {
3314 if let Some(tx_id) = self.buffer.update(cx, |buffer, cx| buffer.redo(cx)) {
3315 if let Some((_, Some(selections))) = self.selection_history.get(&tx_id).cloned() {
3316 self.set_selections(selections, None, cx);
3317 }
3318 self.request_autoscroll(Autoscroll::Fit, cx);
3319 }
3320 }
3321
3322 pub fn finalize_last_transaction(&mut self, cx: &mut ViewContext<Self>) {
3323 self.buffer
3324 .update(cx, |buffer, cx| buffer.finalize_last_transaction(cx));
3325 }
3326
3327 pub fn move_left(&mut self, _: &MoveLeft, cx: &mut ViewContext<Self>) {
3328 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3329 let mut selections = self.local_selections::<Point>(cx);
3330 for selection in &mut selections {
3331 let start = selection.start.to_display_point(&display_map);
3332 let end = selection.end.to_display_point(&display_map);
3333
3334 if start != end {
3335 selection.end = selection.start.clone();
3336 } else {
3337 let cursor = movement::left(&display_map, start)
3338 .unwrap()
3339 .to_point(&display_map);
3340 selection.start = cursor.clone();
3341 selection.end = cursor;
3342 }
3343 selection.reversed = false;
3344 selection.goal = SelectionGoal::None;
3345 }
3346 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3347 }
3348
3349 pub fn select_left(&mut self, _: &SelectLeft, cx: &mut ViewContext<Self>) {
3350 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3351 let mut selections = self.local_selections::<Point>(cx);
3352 for selection in &mut selections {
3353 let head = selection.head().to_display_point(&display_map);
3354 let cursor = movement::left(&display_map, head)
3355 .unwrap()
3356 .to_point(&display_map);
3357 selection.set_head(cursor);
3358 selection.goal = SelectionGoal::None;
3359 }
3360 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3361 }
3362
3363 pub fn move_right(&mut self, _: &MoveRight, cx: &mut ViewContext<Self>) {
3364 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3365 let mut selections = self.local_selections::<Point>(cx);
3366 for selection in &mut selections {
3367 let start = selection.start.to_display_point(&display_map);
3368 let end = selection.end.to_display_point(&display_map);
3369
3370 if start != end {
3371 selection.start = selection.end.clone();
3372 } else {
3373 let cursor = movement::right(&display_map, end)
3374 .unwrap()
3375 .to_point(&display_map);
3376 selection.start = cursor;
3377 selection.end = cursor;
3378 }
3379 selection.reversed = false;
3380 selection.goal = SelectionGoal::None;
3381 }
3382 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3383 }
3384
3385 pub fn select_right(&mut self, _: &SelectRight, cx: &mut ViewContext<Self>) {
3386 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3387 let mut selections = self.local_selections::<Point>(cx);
3388 for selection in &mut selections {
3389 let head = selection.head().to_display_point(&display_map);
3390 let cursor = movement::right(&display_map, head)
3391 .unwrap()
3392 .to_point(&display_map);
3393 selection.set_head(cursor);
3394 selection.goal = SelectionGoal::None;
3395 }
3396 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3397 }
3398
3399 pub fn move_up(&mut self, _: &MoveUp, cx: &mut ViewContext<Self>) {
3400 if self.take_rename(true, cx).is_some() {
3401 return;
3402 }
3403
3404 if let Some(context_menu) = self.context_menu.as_mut() {
3405 if context_menu.select_prev(cx) {
3406 return;
3407 }
3408 }
3409
3410 if matches!(self.mode, EditorMode::SingleLine) {
3411 cx.propagate_action();
3412 return;
3413 }
3414
3415 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3416 let mut selections = self.local_selections::<Point>(cx);
3417 for selection in &mut selections {
3418 let start = selection.start.to_display_point(&display_map);
3419 let end = selection.end.to_display_point(&display_map);
3420 if start != end {
3421 selection.goal = SelectionGoal::None;
3422 }
3423
3424 let (start, goal) = movement::up(&display_map, start, selection.goal).unwrap();
3425 let cursor = start.to_point(&display_map);
3426 selection.start = cursor;
3427 selection.end = cursor;
3428 selection.goal = goal;
3429 selection.reversed = false;
3430 }
3431 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3432 }
3433
3434 pub fn select_up(&mut self, _: &SelectUp, cx: &mut ViewContext<Self>) {
3435 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3436 let mut selections = self.local_selections::<Point>(cx);
3437 for selection in &mut selections {
3438 let head = selection.head().to_display_point(&display_map);
3439 let (head, goal) = movement::up(&display_map, head, selection.goal).unwrap();
3440 let cursor = head.to_point(&display_map);
3441 selection.set_head(cursor);
3442 selection.goal = goal;
3443 }
3444 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3445 }
3446
3447 pub fn move_down(&mut self, _: &MoveDown, cx: &mut ViewContext<Self>) {
3448 self.take_rename(true, cx);
3449
3450 if let Some(context_menu) = self.context_menu.as_mut() {
3451 if context_menu.select_next(cx) {
3452 return;
3453 }
3454 }
3455
3456 if matches!(self.mode, EditorMode::SingleLine) {
3457 cx.propagate_action();
3458 return;
3459 }
3460
3461 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3462 let mut selections = self.local_selections::<Point>(cx);
3463 for selection in &mut selections {
3464 let start = selection.start.to_display_point(&display_map);
3465 let end = selection.end.to_display_point(&display_map);
3466 if start != end {
3467 selection.goal = SelectionGoal::None;
3468 }
3469
3470 let (start, goal) = movement::down(&display_map, end, selection.goal).unwrap();
3471 let cursor = start.to_point(&display_map);
3472 selection.start = cursor;
3473 selection.end = cursor;
3474 selection.goal = goal;
3475 selection.reversed = false;
3476 }
3477 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3478 }
3479
3480 pub fn select_down(&mut self, _: &SelectDown, cx: &mut ViewContext<Self>) {
3481 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3482 let mut selections = self.local_selections::<Point>(cx);
3483 for selection in &mut selections {
3484 let head = selection.head().to_display_point(&display_map);
3485 let (head, goal) = movement::down(&display_map, head, selection.goal).unwrap();
3486 let cursor = head.to_point(&display_map);
3487 selection.set_head(cursor);
3488 selection.goal = goal;
3489 }
3490 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3491 }
3492
3493 pub fn move_to_previous_word_boundary(
3494 &mut self,
3495 _: &MoveToPreviousWordBoundary,
3496 cx: &mut ViewContext<Self>,
3497 ) {
3498 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3499 let mut selections = self.local_selections::<Point>(cx);
3500 for selection in &mut selections {
3501 let head = selection.head().to_display_point(&display_map);
3502 let cursor = movement::prev_word_boundary(&display_map, head).to_point(&display_map);
3503 selection.start = cursor.clone();
3504 selection.end = cursor;
3505 selection.reversed = false;
3506 selection.goal = SelectionGoal::None;
3507 }
3508 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3509 }
3510
3511 pub fn select_to_previous_word_boundary(
3512 &mut self,
3513 _: &SelectToPreviousWordBoundary,
3514 cx: &mut ViewContext<Self>,
3515 ) {
3516 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3517 let mut selections = self.local_selections::<Point>(cx);
3518 for selection in &mut selections {
3519 let head = selection.head().to_display_point(&display_map);
3520 let cursor = movement::prev_word_boundary(&display_map, head).to_point(&display_map);
3521 selection.set_head(cursor);
3522 selection.goal = SelectionGoal::None;
3523 }
3524 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3525 }
3526
3527 pub fn delete_to_previous_word_boundary(
3528 &mut self,
3529 _: &DeleteToPreviousWordBoundary,
3530 cx: &mut ViewContext<Self>,
3531 ) {
3532 self.start_transaction(cx);
3533 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3534 let mut selections = self.local_selections::<Point>(cx);
3535 for selection in &mut selections {
3536 if selection.is_empty() {
3537 let head = selection.head().to_display_point(&display_map);
3538 let cursor =
3539 movement::prev_word_boundary(&display_map, head).to_point(&display_map);
3540 selection.set_head(cursor);
3541 selection.goal = SelectionGoal::None;
3542 }
3543 }
3544 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3545 self.insert("", cx);
3546 self.end_transaction(cx);
3547 }
3548
3549 pub fn move_to_next_word_boundary(
3550 &mut self,
3551 _: &MoveToNextWordBoundary,
3552 cx: &mut ViewContext<Self>,
3553 ) {
3554 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3555 let mut selections = self.local_selections::<Point>(cx);
3556 for selection in &mut selections {
3557 let head = selection.head().to_display_point(&display_map);
3558 let cursor = movement::next_word_boundary(&display_map, head).to_point(&display_map);
3559 selection.start = cursor;
3560 selection.end = cursor;
3561 selection.reversed = false;
3562 selection.goal = SelectionGoal::None;
3563 }
3564 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3565 }
3566
3567 pub fn select_to_next_word_boundary(
3568 &mut self,
3569 _: &SelectToNextWordBoundary,
3570 cx: &mut ViewContext<Self>,
3571 ) {
3572 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3573 let mut selections = self.local_selections::<Point>(cx);
3574 for selection in &mut selections {
3575 let head = selection.head().to_display_point(&display_map);
3576 let cursor = movement::next_word_boundary(&display_map, head).to_point(&display_map);
3577 selection.set_head(cursor);
3578 selection.goal = SelectionGoal::None;
3579 }
3580 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3581 }
3582
3583 pub fn delete_to_next_word_boundary(
3584 &mut self,
3585 _: &DeleteToNextWordBoundary,
3586 cx: &mut ViewContext<Self>,
3587 ) {
3588 self.start_transaction(cx);
3589 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3590 let mut selections = self.local_selections::<Point>(cx);
3591 for selection in &mut selections {
3592 if selection.is_empty() {
3593 let head = selection.head().to_display_point(&display_map);
3594 let cursor =
3595 movement::next_word_boundary(&display_map, head).to_point(&display_map);
3596 selection.set_head(cursor);
3597 selection.goal = SelectionGoal::None;
3598 }
3599 }
3600 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3601 self.insert("", cx);
3602 self.end_transaction(cx);
3603 }
3604
3605 pub fn move_to_beginning_of_line(
3606 &mut self,
3607 _: &MoveToBeginningOfLine,
3608 cx: &mut ViewContext<Self>,
3609 ) {
3610 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3611 let mut selections = self.local_selections::<Point>(cx);
3612 for selection in &mut selections {
3613 let head = selection.head().to_display_point(&display_map);
3614 let new_head = movement::line_beginning(&display_map, head, true);
3615 let cursor = new_head.to_point(&display_map);
3616 selection.start = cursor;
3617 selection.end = cursor;
3618 selection.reversed = false;
3619 selection.goal = SelectionGoal::None;
3620 }
3621 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3622 }
3623
3624 pub fn select_to_beginning_of_line(
3625 &mut self,
3626 SelectToBeginningOfLine(stop_at_soft_boundaries): &SelectToBeginningOfLine,
3627 cx: &mut ViewContext<Self>,
3628 ) {
3629 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3630 let mut selections = self.local_selections::<Point>(cx);
3631 for selection in &mut selections {
3632 let head = selection.head().to_display_point(&display_map);
3633 let new_head = movement::line_beginning(&display_map, head, *stop_at_soft_boundaries);
3634 selection.set_head(new_head.to_point(&display_map));
3635 selection.goal = SelectionGoal::None;
3636 }
3637 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3638 }
3639
3640 pub fn delete_to_beginning_of_line(
3641 &mut self,
3642 _: &DeleteToBeginningOfLine,
3643 cx: &mut ViewContext<Self>,
3644 ) {
3645 self.start_transaction(cx);
3646 self.select_to_beginning_of_line(&SelectToBeginningOfLine(false), cx);
3647 self.backspace(&Backspace, cx);
3648 self.end_transaction(cx);
3649 }
3650
3651 pub fn move_to_end_of_line(&mut self, _: &MoveToEndOfLine, cx: &mut ViewContext<Self>) {
3652 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3653 let mut selections = self.local_selections::<Point>(cx);
3654 {
3655 for selection in &mut selections {
3656 let head = selection.head().to_display_point(&display_map);
3657 let new_head = movement::line_end(&display_map, head, true);
3658 let anchor = new_head.to_point(&display_map);
3659 selection.start = anchor.clone();
3660 selection.end = anchor;
3661 selection.reversed = false;
3662 selection.goal = SelectionGoal::None;
3663 }
3664 }
3665 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3666 }
3667
3668 pub fn select_to_end_of_line(
3669 &mut self,
3670 SelectToEndOfLine(stop_at_soft_boundaries): &SelectToEndOfLine,
3671 cx: &mut ViewContext<Self>,
3672 ) {
3673 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3674 let mut selections = self.local_selections::<Point>(cx);
3675 for selection in &mut selections {
3676 let head = selection.head().to_display_point(&display_map);
3677 let new_head = movement::line_end(&display_map, head, *stop_at_soft_boundaries);
3678 selection.set_head(new_head.to_point(&display_map));
3679 selection.goal = SelectionGoal::None;
3680 }
3681 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3682 }
3683
3684 pub fn delete_to_end_of_line(&mut self, _: &DeleteToEndOfLine, cx: &mut ViewContext<Self>) {
3685 self.start_transaction(cx);
3686 self.select_to_end_of_line(&SelectToEndOfLine(false), cx);
3687 self.delete(&Delete, cx);
3688 self.end_transaction(cx);
3689 }
3690
3691 pub fn cut_to_end_of_line(&mut self, _: &CutToEndOfLine, cx: &mut ViewContext<Self>) {
3692 self.start_transaction(cx);
3693 self.select_to_end_of_line(&SelectToEndOfLine(false), cx);
3694 self.cut(&Cut, cx);
3695 self.end_transaction(cx);
3696 }
3697
3698 pub fn move_to_beginning(&mut self, _: &MoveToBeginning, cx: &mut ViewContext<Self>) {
3699 if matches!(self.mode, EditorMode::SingleLine) {
3700 cx.propagate_action();
3701 return;
3702 }
3703
3704 let selection = Selection {
3705 id: post_inc(&mut self.next_selection_id),
3706 start: 0,
3707 end: 0,
3708 reversed: false,
3709 goal: SelectionGoal::None,
3710 };
3711 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
3712 }
3713
3714 pub fn select_to_beginning(&mut self, _: &SelectToBeginning, cx: &mut ViewContext<Self>) {
3715 let mut selection = self.local_selections::<Point>(cx).last().unwrap().clone();
3716 selection.set_head(Point::zero());
3717 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
3718 }
3719
3720 pub fn move_to_end(&mut self, _: &MoveToEnd, cx: &mut ViewContext<Self>) {
3721 if matches!(self.mode, EditorMode::SingleLine) {
3722 cx.propagate_action();
3723 return;
3724 }
3725
3726 let cursor = self.buffer.read(cx).read(cx).len();
3727 let selection = Selection {
3728 id: post_inc(&mut self.next_selection_id),
3729 start: cursor,
3730 end: cursor,
3731 reversed: false,
3732 goal: SelectionGoal::None,
3733 };
3734 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
3735 }
3736
3737 pub fn set_nav_history(&mut self, nav_history: Option<ItemNavHistory>) {
3738 self.nav_history = nav_history;
3739 }
3740
3741 pub fn nav_history(&self) -> Option<&ItemNavHistory> {
3742 self.nav_history.as_ref()
3743 }
3744
3745 fn push_to_nav_history(
3746 &self,
3747 position: Anchor,
3748 new_position: Option<Point>,
3749 cx: &mut ViewContext<Self>,
3750 ) {
3751 if let Some(nav_history) = &self.nav_history {
3752 let buffer = self.buffer.read(cx).read(cx);
3753 let offset = position.to_offset(&buffer);
3754 let point = position.to_point(&buffer);
3755 drop(buffer);
3756
3757 if let Some(new_position) = new_position {
3758 let row_delta = (new_position.row as i64 - point.row as i64).abs();
3759 if row_delta < MIN_NAVIGATION_HISTORY_ROW_DELTA {
3760 return;
3761 }
3762 }
3763
3764 nav_history.push(Some(NavigationData {
3765 anchor: position,
3766 offset,
3767 }));
3768 }
3769 }
3770
3771 pub fn select_to_end(&mut self, _: &SelectToEnd, cx: &mut ViewContext<Self>) {
3772 let mut selection = self.local_selections::<usize>(cx).first().unwrap().clone();
3773 selection.set_head(self.buffer.read(cx).read(cx).len());
3774 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
3775 }
3776
3777 pub fn select_all(&mut self, _: &SelectAll, cx: &mut ViewContext<Self>) {
3778 let selection = Selection {
3779 id: post_inc(&mut self.next_selection_id),
3780 start: 0,
3781 end: self.buffer.read(cx).read(cx).len(),
3782 reversed: false,
3783 goal: SelectionGoal::None,
3784 };
3785 self.update_selections(vec![selection], None, cx);
3786 }
3787
3788 pub fn select_line(&mut self, _: &SelectLine, cx: &mut ViewContext<Self>) {
3789 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3790 let mut selections = self.local_selections::<Point>(cx);
3791 let max_point = display_map.buffer_snapshot.max_point();
3792 for selection in &mut selections {
3793 let rows = selection.spanned_rows(true, &display_map);
3794 selection.start = Point::new(rows.start, 0);
3795 selection.end = cmp::min(max_point, Point::new(rows.end, 0));
3796 selection.reversed = false;
3797 }
3798 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3799 }
3800
3801 pub fn split_selection_into_lines(
3802 &mut self,
3803 _: &SplitSelectionIntoLines,
3804 cx: &mut ViewContext<Self>,
3805 ) {
3806 let mut to_unfold = Vec::new();
3807 let mut new_selections = Vec::new();
3808 {
3809 let selections = self.local_selections::<Point>(cx);
3810 let buffer = self.buffer.read(cx).read(cx);
3811 for selection in selections {
3812 for row in selection.start.row..selection.end.row {
3813 let cursor = Point::new(row, buffer.line_len(row));
3814 new_selections.push(Selection {
3815 id: post_inc(&mut self.next_selection_id),
3816 start: cursor,
3817 end: cursor,
3818 reversed: false,
3819 goal: SelectionGoal::None,
3820 });
3821 }
3822 new_selections.push(Selection {
3823 id: selection.id,
3824 start: selection.end,
3825 end: selection.end,
3826 reversed: false,
3827 goal: SelectionGoal::None,
3828 });
3829 to_unfold.push(selection.start..selection.end);
3830 }
3831 }
3832 self.unfold_ranges(to_unfold, cx);
3833 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
3834 }
3835
3836 pub fn add_selection_above(&mut self, _: &AddSelectionAbove, cx: &mut ViewContext<Self>) {
3837 self.add_selection(true, cx);
3838 }
3839
3840 pub fn add_selection_below(&mut self, _: &AddSelectionBelow, cx: &mut ViewContext<Self>) {
3841 self.add_selection(false, cx);
3842 }
3843
3844 fn add_selection(&mut self, above: bool, cx: &mut ViewContext<Self>) {
3845 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3846 let mut selections = self.local_selections::<Point>(cx);
3847 let mut state = self.add_selections_state.take().unwrap_or_else(|| {
3848 let oldest_selection = selections.iter().min_by_key(|s| s.id).unwrap().clone();
3849 let range = oldest_selection.display_range(&display_map).sorted();
3850 let columns = cmp::min(range.start.column(), range.end.column())
3851 ..cmp::max(range.start.column(), range.end.column());
3852
3853 selections.clear();
3854 let mut stack = Vec::new();
3855 for row in range.start.row()..=range.end.row() {
3856 if let Some(selection) = self.build_columnar_selection(
3857 &display_map,
3858 row,
3859 &columns,
3860 oldest_selection.reversed,
3861 ) {
3862 stack.push(selection.id);
3863 selections.push(selection);
3864 }
3865 }
3866
3867 if above {
3868 stack.reverse();
3869 }
3870
3871 AddSelectionsState { above, stack }
3872 });
3873
3874 let last_added_selection = *state.stack.last().unwrap();
3875 let mut new_selections = Vec::new();
3876 if above == state.above {
3877 let end_row = if above {
3878 0
3879 } else {
3880 display_map.max_point().row()
3881 };
3882
3883 'outer: for selection in selections {
3884 if selection.id == last_added_selection {
3885 let range = selection.display_range(&display_map).sorted();
3886 debug_assert_eq!(range.start.row(), range.end.row());
3887 let mut row = range.start.row();
3888 let columns = if let SelectionGoal::ColumnRange { start, end } = selection.goal
3889 {
3890 start..end
3891 } else {
3892 cmp::min(range.start.column(), range.end.column())
3893 ..cmp::max(range.start.column(), range.end.column())
3894 };
3895
3896 while row != end_row {
3897 if above {
3898 row -= 1;
3899 } else {
3900 row += 1;
3901 }
3902
3903 if let Some(new_selection) = self.build_columnar_selection(
3904 &display_map,
3905 row,
3906 &columns,
3907 selection.reversed,
3908 ) {
3909 state.stack.push(new_selection.id);
3910 if above {
3911 new_selections.push(new_selection);
3912 new_selections.push(selection);
3913 } else {
3914 new_selections.push(selection);
3915 new_selections.push(new_selection);
3916 }
3917
3918 continue 'outer;
3919 }
3920 }
3921 }
3922
3923 new_selections.push(selection);
3924 }
3925 } else {
3926 new_selections = selections;
3927 new_selections.retain(|s| s.id != last_added_selection);
3928 state.stack.pop();
3929 }
3930
3931 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
3932 if state.stack.len() > 1 {
3933 self.add_selections_state = Some(state);
3934 }
3935 }
3936
3937 pub fn select_next(&mut self, action: &SelectNext, cx: &mut ViewContext<Self>) {
3938 let replace_newest = action.0;
3939 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3940 let buffer = &display_map.buffer_snapshot;
3941 let mut selections = self.local_selections::<usize>(cx);
3942 if let Some(mut select_next_state) = self.select_next_state.take() {
3943 let query = &select_next_state.query;
3944 if !select_next_state.done {
3945 let first_selection = selections.iter().min_by_key(|s| s.id).unwrap();
3946 let last_selection = selections.iter().max_by_key(|s| s.id).unwrap();
3947 let mut next_selected_range = None;
3948
3949 let bytes_after_last_selection =
3950 buffer.bytes_in_range(last_selection.end..buffer.len());
3951 let bytes_before_first_selection = buffer.bytes_in_range(0..first_selection.start);
3952 let query_matches = query
3953 .stream_find_iter(bytes_after_last_selection)
3954 .map(|result| (last_selection.end, result))
3955 .chain(
3956 query
3957 .stream_find_iter(bytes_before_first_selection)
3958 .map(|result| (0, result)),
3959 );
3960 for (start_offset, query_match) in query_matches {
3961 let query_match = query_match.unwrap(); // can only fail due to I/O
3962 let offset_range =
3963 start_offset + query_match.start()..start_offset + query_match.end();
3964 let display_range = offset_range.start.to_display_point(&display_map)
3965 ..offset_range.end.to_display_point(&display_map);
3966
3967 if !select_next_state.wordwise
3968 || (!movement::is_inside_word(&display_map, display_range.start)
3969 && !movement::is_inside_word(&display_map, display_range.end))
3970 {
3971 next_selected_range = Some(offset_range);
3972 break;
3973 }
3974 }
3975
3976 if let Some(next_selected_range) = next_selected_range {
3977 if replace_newest {
3978 if let Some(newest_id) =
3979 selections.iter().max_by_key(|s| s.id).map(|s| s.id)
3980 {
3981 selections.retain(|s| s.id != newest_id);
3982 }
3983 }
3984 selections.push(Selection {
3985 id: post_inc(&mut self.next_selection_id),
3986 start: next_selected_range.start,
3987 end: next_selected_range.end,
3988 reversed: false,
3989 goal: SelectionGoal::None,
3990 });
3991 self.update_selections(selections, Some(Autoscroll::Newest), cx);
3992 } else {
3993 select_next_state.done = true;
3994 }
3995 }
3996
3997 self.select_next_state = Some(select_next_state);
3998 } else if selections.len() == 1 {
3999 let selection = selections.last_mut().unwrap();
4000 if selection.start == selection.end {
4001 let word_range = movement::surrounding_word(
4002 &display_map,
4003 selection.start.to_display_point(&display_map),
4004 );
4005 selection.start = word_range.start.to_offset(&display_map, Bias::Left);
4006 selection.end = word_range.end.to_offset(&display_map, Bias::Left);
4007 selection.goal = SelectionGoal::None;
4008 selection.reversed = false;
4009
4010 let query = buffer
4011 .text_for_range(selection.start..selection.end)
4012 .collect::<String>();
4013 let select_state = SelectNextState {
4014 query: AhoCorasick::new_auto_configured(&[query]),
4015 wordwise: true,
4016 done: false,
4017 };
4018 self.update_selections(selections, Some(Autoscroll::Newest), cx);
4019 self.select_next_state = Some(select_state);
4020 } else {
4021 let query = buffer
4022 .text_for_range(selection.start..selection.end)
4023 .collect::<String>();
4024 self.select_next_state = Some(SelectNextState {
4025 query: AhoCorasick::new_auto_configured(&[query]),
4026 wordwise: false,
4027 done: false,
4028 });
4029 self.select_next(action, cx);
4030 }
4031 }
4032 }
4033
4034 pub fn toggle_comments(&mut self, _: &ToggleComments, cx: &mut ViewContext<Self>) {
4035 // Get the line comment prefix. Split its trailing whitespace into a separate string,
4036 // as that portion won't be used for detecting if a line is a comment.
4037 let full_comment_prefix =
4038 if let Some(prefix) = self.language(cx).and_then(|l| l.line_comment_prefix()) {
4039 prefix.to_string()
4040 } else {
4041 return;
4042 };
4043 let comment_prefix = full_comment_prefix.trim_end_matches(' ');
4044 let comment_prefix_whitespace = &full_comment_prefix[comment_prefix.len()..];
4045
4046 self.start_transaction(cx);
4047 let mut selections = self.local_selections::<Point>(cx);
4048 let mut all_selection_lines_are_comments = true;
4049 let mut edit_ranges = Vec::new();
4050 let mut last_toggled_row = None;
4051 self.buffer.update(cx, |buffer, cx| {
4052 for selection in &mut selections {
4053 edit_ranges.clear();
4054 let snapshot = buffer.snapshot(cx);
4055
4056 let end_row =
4057 if selection.end.row > selection.start.row && selection.end.column == 0 {
4058 selection.end.row
4059 } else {
4060 selection.end.row + 1
4061 };
4062
4063 for row in selection.start.row..end_row {
4064 // If multiple selections contain a given row, avoid processing that
4065 // row more than once.
4066 if last_toggled_row == Some(row) {
4067 continue;
4068 } else {
4069 last_toggled_row = Some(row);
4070 }
4071
4072 if snapshot.is_line_blank(row) {
4073 continue;
4074 }
4075
4076 let start = Point::new(row, snapshot.indent_column_for_line(row));
4077 let mut line_bytes = snapshot
4078 .bytes_in_range(start..snapshot.max_point())
4079 .flatten()
4080 .copied();
4081
4082 // If this line currently begins with the line comment prefix, then record
4083 // the range containing the prefix.
4084 if all_selection_lines_are_comments
4085 && line_bytes
4086 .by_ref()
4087 .take(comment_prefix.len())
4088 .eq(comment_prefix.bytes())
4089 {
4090 // Include any whitespace that matches the comment prefix.
4091 let matching_whitespace_len = line_bytes
4092 .zip(comment_prefix_whitespace.bytes())
4093 .take_while(|(a, b)| a == b)
4094 .count() as u32;
4095 let end = Point::new(
4096 row,
4097 start.column + comment_prefix.len() as u32 + matching_whitespace_len,
4098 );
4099 edit_ranges.push(start..end);
4100 }
4101 // If this line does not begin with the line comment prefix, then record
4102 // the position where the prefix should be inserted.
4103 else {
4104 all_selection_lines_are_comments = false;
4105 edit_ranges.push(start..start);
4106 }
4107 }
4108
4109 if !edit_ranges.is_empty() {
4110 if all_selection_lines_are_comments {
4111 buffer.edit(edit_ranges.iter().cloned(), "", cx);
4112 } else {
4113 let min_column = edit_ranges.iter().map(|r| r.start.column).min().unwrap();
4114 let edit_ranges = edit_ranges.iter().map(|range| {
4115 let position = Point::new(range.start.row, min_column);
4116 position..position
4117 });
4118 buffer.edit(edit_ranges, &full_comment_prefix, cx);
4119 }
4120 }
4121 }
4122 });
4123
4124 self.update_selections(
4125 self.local_selections::<usize>(cx),
4126 Some(Autoscroll::Fit),
4127 cx,
4128 );
4129 self.end_transaction(cx);
4130 }
4131
4132 pub fn select_larger_syntax_node(
4133 &mut self,
4134 _: &SelectLargerSyntaxNode,
4135 cx: &mut ViewContext<Self>,
4136 ) {
4137 let old_selections = self.local_selections::<usize>(cx).into_boxed_slice();
4138 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
4139 let buffer = self.buffer.read(cx).snapshot(cx);
4140
4141 let mut stack = mem::take(&mut self.select_larger_syntax_node_stack);
4142 let mut selected_larger_node = false;
4143 let new_selections = old_selections
4144 .iter()
4145 .map(|selection| {
4146 let old_range = selection.start..selection.end;
4147 let mut new_range = old_range.clone();
4148 while let Some(containing_range) =
4149 buffer.range_for_syntax_ancestor(new_range.clone())
4150 {
4151 new_range = containing_range;
4152 if !display_map.intersects_fold(new_range.start)
4153 && !display_map.intersects_fold(new_range.end)
4154 {
4155 break;
4156 }
4157 }
4158
4159 selected_larger_node |= new_range != old_range;
4160 Selection {
4161 id: selection.id,
4162 start: new_range.start,
4163 end: new_range.end,
4164 goal: SelectionGoal::None,
4165 reversed: selection.reversed,
4166 }
4167 })
4168 .collect::<Vec<_>>();
4169
4170 if selected_larger_node {
4171 stack.push(old_selections);
4172 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
4173 }
4174 self.select_larger_syntax_node_stack = stack;
4175 }
4176
4177 pub fn select_smaller_syntax_node(
4178 &mut self,
4179 _: &SelectSmallerSyntaxNode,
4180 cx: &mut ViewContext<Self>,
4181 ) {
4182 let mut stack = mem::take(&mut self.select_larger_syntax_node_stack);
4183 if let Some(selections) = stack.pop() {
4184 self.update_selections(selections.to_vec(), Some(Autoscroll::Fit), cx);
4185 }
4186 self.select_larger_syntax_node_stack = stack;
4187 }
4188
4189 pub fn move_to_enclosing_bracket(
4190 &mut self,
4191 _: &MoveToEnclosingBracket,
4192 cx: &mut ViewContext<Self>,
4193 ) {
4194 let mut selections = self.local_selections::<usize>(cx);
4195 let buffer = self.buffer.read(cx).snapshot(cx);
4196 for selection in &mut selections {
4197 if let Some((open_range, close_range)) =
4198 buffer.enclosing_bracket_ranges(selection.start..selection.end)
4199 {
4200 let close_range = close_range.to_inclusive();
4201 let destination = if close_range.contains(&selection.start)
4202 && close_range.contains(&selection.end)
4203 {
4204 open_range.end
4205 } else {
4206 *close_range.start()
4207 };
4208 selection.start = destination;
4209 selection.end = destination;
4210 }
4211 }
4212
4213 self.update_selections(selections, Some(Autoscroll::Fit), cx);
4214 }
4215
4216 pub fn go_to_diagnostic(
4217 &mut self,
4218 &GoToDiagnostic(direction): &GoToDiagnostic,
4219 cx: &mut ViewContext<Self>,
4220 ) {
4221 let buffer = self.buffer.read(cx).snapshot(cx);
4222 let selection = self.newest_selection_with_snapshot::<usize>(&buffer);
4223 let mut active_primary_range = self.active_diagnostics.as_ref().map(|active_diagnostics| {
4224 active_diagnostics
4225 .primary_range
4226 .to_offset(&buffer)
4227 .to_inclusive()
4228 });
4229 let mut search_start = if let Some(active_primary_range) = active_primary_range.as_ref() {
4230 if active_primary_range.contains(&selection.head()) {
4231 *active_primary_range.end()
4232 } else {
4233 selection.head()
4234 }
4235 } else {
4236 selection.head()
4237 };
4238
4239 loop {
4240 let mut diagnostics = if direction == Direction::Prev {
4241 buffer.diagnostics_in_range::<_, usize>(0..search_start, true)
4242 } else {
4243 buffer.diagnostics_in_range::<_, usize>(search_start..buffer.len(), false)
4244 };
4245 let group = diagnostics.find_map(|entry| {
4246 if entry.diagnostic.is_primary
4247 && entry.diagnostic.severity <= DiagnosticSeverity::WARNING
4248 && !entry.range.is_empty()
4249 && Some(entry.range.end) != active_primary_range.as_ref().map(|r| *r.end())
4250 {
4251 Some((entry.range, entry.diagnostic.group_id))
4252 } else {
4253 None
4254 }
4255 });
4256
4257 if let Some((primary_range, group_id)) = group {
4258 self.activate_diagnostics(group_id, cx);
4259 self.update_selections(
4260 vec![Selection {
4261 id: selection.id,
4262 start: primary_range.start,
4263 end: primary_range.start,
4264 reversed: false,
4265 goal: SelectionGoal::None,
4266 }],
4267 Some(Autoscroll::Center),
4268 cx,
4269 );
4270 break;
4271 } else {
4272 // Cycle around to the start of the buffer, potentially moving back to the start of
4273 // the currently active diagnostic.
4274 active_primary_range.take();
4275 if direction == Direction::Prev {
4276 if search_start == buffer.len() {
4277 break;
4278 } else {
4279 search_start = buffer.len();
4280 }
4281 } else {
4282 if search_start == 0 {
4283 break;
4284 } else {
4285 search_start = 0;
4286 }
4287 }
4288 }
4289 }
4290 }
4291
4292 pub fn go_to_definition(
4293 workspace: &mut Workspace,
4294 _: &GoToDefinition,
4295 cx: &mut ViewContext<Workspace>,
4296 ) {
4297 let active_item = workspace.active_item(cx);
4298 let editor_handle = if let Some(editor) = active_item
4299 .as_ref()
4300 .and_then(|item| item.act_as::<Self>(cx))
4301 {
4302 editor
4303 } else {
4304 return;
4305 };
4306
4307 let editor = editor_handle.read(cx);
4308 let head = editor.newest_selection::<usize>(cx).head();
4309 let (buffer, head) =
4310 if let Some(text_anchor) = editor.buffer.read(cx).text_anchor_for_position(head, cx) {
4311 text_anchor
4312 } else {
4313 return;
4314 };
4315
4316 let project = workspace.project().clone();
4317 let definitions = project.update(cx, |project, cx| project.definition(&buffer, head, cx));
4318 cx.spawn(|workspace, mut cx| async move {
4319 let definitions = definitions.await?;
4320 workspace.update(&mut cx, |workspace, cx| {
4321 let nav_history = workspace.active_pane().read(cx).nav_history().clone();
4322 for definition in definitions {
4323 let range = definition.range.to_offset(definition.buffer.read(cx));
4324
4325 let target_editor_handle =
4326 Self::find_or_create(workspace, definition.buffer, cx);
4327 target_editor_handle.update(cx, |target_editor, cx| {
4328 // When selecting a definition in a different buffer, disable the nav history
4329 // to avoid creating a history entry at the previous cursor location.
4330 if editor_handle != target_editor_handle {
4331 nav_history.borrow_mut().disable();
4332 }
4333 target_editor.select_ranges([range], Some(Autoscroll::Center), cx);
4334 nav_history.borrow_mut().enable();
4335 });
4336 }
4337 });
4338
4339 Ok::<(), anyhow::Error>(())
4340 })
4341 .detach_and_log_err(cx);
4342 }
4343
4344 pub fn find_all_references(
4345 workspace: &mut Workspace,
4346 _: &FindAllReferences,
4347 cx: &mut ViewContext<Workspace>,
4348 ) -> Option<Task<Result<()>>> {
4349 let active_item = workspace.active_item(cx)?;
4350 let editor_handle = active_item.act_as::<Self>(cx)?;
4351
4352 let editor = editor_handle.read(cx);
4353 let head = editor.newest_selection::<usize>(cx).head();
4354 let (buffer, head) = editor.buffer.read(cx).text_anchor_for_position(head, cx)?;
4355 let replica_id = editor.replica_id(cx);
4356
4357 let project = workspace.project().clone();
4358 let references = project.update(cx, |project, cx| project.references(&buffer, head, cx));
4359 Some(cx.spawn(|workspace, mut cx| async move {
4360 let mut locations = references.await?;
4361 if locations.is_empty() {
4362 return Ok(());
4363 }
4364
4365 locations.sort_by_key(|location| location.buffer.id());
4366 let mut locations = locations.into_iter().peekable();
4367 let mut ranges_to_highlight = Vec::new();
4368
4369 let excerpt_buffer = cx.add_model(|cx| {
4370 let mut symbol_name = None;
4371 let mut multibuffer = MultiBuffer::new(replica_id);
4372 while let Some(location) = locations.next() {
4373 let buffer = location.buffer.read(cx);
4374 let mut ranges_for_buffer = Vec::new();
4375 let range = location.range.to_offset(buffer);
4376 ranges_for_buffer.push(range.clone());
4377 if symbol_name.is_none() {
4378 symbol_name = Some(buffer.text_for_range(range).collect::<String>());
4379 }
4380
4381 while let Some(next_location) = locations.peek() {
4382 if next_location.buffer == location.buffer {
4383 ranges_for_buffer.push(next_location.range.to_offset(buffer));
4384 locations.next();
4385 } else {
4386 break;
4387 }
4388 }
4389
4390 ranges_for_buffer.sort_by_key(|range| (range.start, Reverse(range.end)));
4391 ranges_to_highlight.extend(multibuffer.push_excerpts_with_context_lines(
4392 location.buffer.clone(),
4393 ranges_for_buffer,
4394 1,
4395 cx,
4396 ));
4397 }
4398 multibuffer.with_title(format!("References to `{}`", symbol_name.unwrap()))
4399 });
4400
4401 workspace.update(&mut cx, |workspace, cx| {
4402 let editor =
4403 cx.add_view(|cx| Editor::for_buffer(excerpt_buffer, Some(project), cx));
4404 editor.update(cx, |editor, cx| {
4405 let color = editor.style(cx).highlighted_line_background;
4406 editor.highlight_background::<Self>(ranges_to_highlight, color, cx);
4407 });
4408 workspace.open_item(Box::new(editor), cx);
4409 });
4410
4411 Ok(())
4412 }))
4413 }
4414
4415 pub fn rename(&mut self, _: &Rename, cx: &mut ViewContext<Self>) -> Option<Task<Result<()>>> {
4416 use language::ToOffset as _;
4417
4418 let project = self.project.clone()?;
4419 let selection = self.newest_anchor_selection().clone();
4420 let (cursor_buffer, cursor_buffer_position) = self
4421 .buffer
4422 .read(cx)
4423 .text_anchor_for_position(selection.head(), cx)?;
4424 let (tail_buffer, _) = self
4425 .buffer
4426 .read(cx)
4427 .text_anchor_for_position(selection.tail(), cx)?;
4428 if tail_buffer != cursor_buffer {
4429 return None;
4430 }
4431
4432 let snapshot = cursor_buffer.read(cx).snapshot();
4433 let cursor_buffer_offset = cursor_buffer_position.to_offset(&snapshot);
4434 let prepare_rename = project.update(cx, |project, cx| {
4435 project.prepare_rename(cursor_buffer, cursor_buffer_offset, cx)
4436 });
4437
4438 Some(cx.spawn(|this, mut cx| async move {
4439 if let Some(rename_range) = prepare_rename.await? {
4440 let rename_buffer_range = rename_range.to_offset(&snapshot);
4441 let cursor_offset_in_rename_range =
4442 cursor_buffer_offset.saturating_sub(rename_buffer_range.start);
4443
4444 this.update(&mut cx, |this, cx| {
4445 this.take_rename(false, cx);
4446 let style = this.style(cx);
4447 let buffer = this.buffer.read(cx).read(cx);
4448 let cursor_offset = selection.head().to_offset(&buffer);
4449 let rename_start = cursor_offset.saturating_sub(cursor_offset_in_rename_range);
4450 let rename_end = rename_start + rename_buffer_range.len();
4451 let range = buffer.anchor_before(rename_start)..buffer.anchor_after(rename_end);
4452 let mut old_highlight_id = None;
4453 let old_name = buffer
4454 .chunks(rename_start..rename_end, true)
4455 .map(|chunk| {
4456 if old_highlight_id.is_none() {
4457 old_highlight_id = chunk.syntax_highlight_id;
4458 }
4459 chunk.text
4460 })
4461 .collect();
4462
4463 drop(buffer);
4464
4465 // Position the selection in the rename editor so that it matches the current selection.
4466 this.show_local_selections = false;
4467 let rename_editor = cx.add_view(|cx| {
4468 let mut editor = Editor::single_line(None, cx);
4469 if let Some(old_highlight_id) = old_highlight_id {
4470 editor.override_text_style =
4471 Some(Box::new(move |style| old_highlight_id.style(&style.syntax)));
4472 }
4473 editor
4474 .buffer
4475 .update(cx, |buffer, cx| buffer.edit([0..0], &old_name, cx));
4476 editor.select_all(&SelectAll, cx);
4477 editor
4478 });
4479
4480 let ranges = this
4481 .clear_background_highlights::<DocumentHighlightWrite>(cx)
4482 .into_iter()
4483 .flat_map(|(_, ranges)| ranges)
4484 .chain(
4485 this.clear_background_highlights::<DocumentHighlightRead>(cx)
4486 .into_iter()
4487 .flat_map(|(_, ranges)| ranges),
4488 )
4489 .collect();
4490 this.highlight_text::<Rename>(
4491 ranges,
4492 HighlightStyle {
4493 fade_out: Some(style.rename_fade),
4494 ..Default::default()
4495 },
4496 cx,
4497 );
4498 cx.focus(&rename_editor);
4499 let block_id = this.insert_blocks(
4500 [BlockProperties {
4501 position: range.start.clone(),
4502 height: 1,
4503 render: Arc::new({
4504 let editor = rename_editor.clone();
4505 move |cx: &BlockContext| {
4506 ChildView::new(editor.clone())
4507 .contained()
4508 .with_padding_left(cx.anchor_x)
4509 .boxed()
4510 }
4511 }),
4512 disposition: BlockDisposition::Below,
4513 }],
4514 cx,
4515 )[0];
4516 this.pending_rename = Some(RenameState {
4517 range,
4518 old_name,
4519 editor: rename_editor,
4520 block_id,
4521 });
4522 });
4523 }
4524
4525 Ok(())
4526 }))
4527 }
4528
4529 pub fn confirm_rename(
4530 workspace: &mut Workspace,
4531 _: &ConfirmRename,
4532 cx: &mut ViewContext<Workspace>,
4533 ) -> Option<Task<Result<()>>> {
4534 let editor = workspace.active_item(cx)?.act_as::<Editor>(cx)?;
4535
4536 let (buffer, range, old_name, new_name) = editor.update(cx, |editor, cx| {
4537 let rename = editor.take_rename(false, cx)?;
4538 let buffer = editor.buffer.read(cx);
4539 let (start_buffer, start) =
4540 buffer.text_anchor_for_position(rename.range.start.clone(), cx)?;
4541 let (end_buffer, end) =
4542 buffer.text_anchor_for_position(rename.range.end.clone(), cx)?;
4543 if start_buffer == end_buffer {
4544 let new_name = rename.editor.read(cx).text(cx);
4545 Some((start_buffer, start..end, rename.old_name, new_name))
4546 } else {
4547 None
4548 }
4549 })?;
4550
4551 let rename = workspace.project().clone().update(cx, |project, cx| {
4552 project.perform_rename(
4553 buffer.clone(),
4554 range.start.clone(),
4555 new_name.clone(),
4556 true,
4557 cx,
4558 )
4559 });
4560
4561 Some(cx.spawn(|workspace, mut cx| async move {
4562 let project_transaction = rename.await?;
4563 Self::open_project_transaction(
4564 editor.clone(),
4565 workspace,
4566 project_transaction,
4567 format!("Rename: {} → {}", old_name, new_name),
4568 cx.clone(),
4569 )
4570 .await?;
4571
4572 editor.update(&mut cx, |editor, cx| {
4573 editor.refresh_document_highlights(cx);
4574 });
4575 Ok(())
4576 }))
4577 }
4578
4579 fn take_rename(
4580 &mut self,
4581 moving_cursor: bool,
4582 cx: &mut ViewContext<Self>,
4583 ) -> Option<RenameState> {
4584 let rename = self.pending_rename.take()?;
4585 self.remove_blocks([rename.block_id].into_iter().collect(), cx);
4586 self.clear_text_highlights::<Rename>(cx);
4587 self.show_local_selections = true;
4588
4589 if moving_cursor {
4590 let cursor_in_rename_editor =
4591 rename.editor.read(cx).newest_selection::<usize>(cx).head();
4592
4593 // Update the selection to match the position of the selection inside
4594 // the rename editor.
4595 let snapshot = self.buffer.read(cx).read(cx);
4596 let rename_range = rename.range.to_offset(&snapshot);
4597 let cursor_in_editor = snapshot
4598 .clip_offset(rename_range.start + cursor_in_rename_editor, Bias::Left)
4599 .min(rename_range.end);
4600 drop(snapshot);
4601
4602 self.update_selections(
4603 vec![Selection {
4604 id: self.newest_anchor_selection().id,
4605 start: cursor_in_editor,
4606 end: cursor_in_editor,
4607 reversed: false,
4608 goal: SelectionGoal::None,
4609 }],
4610 None,
4611 cx,
4612 );
4613 }
4614
4615 Some(rename)
4616 }
4617
4618 fn invalidate_rename_range(
4619 &mut self,
4620 buffer: &MultiBufferSnapshot,
4621 cx: &mut ViewContext<Self>,
4622 ) {
4623 if let Some(rename) = self.pending_rename.as_ref() {
4624 if self.selections.len() == 1 {
4625 let head = self.selections[0].head().to_offset(buffer);
4626 let range = rename.range.to_offset(buffer).to_inclusive();
4627 if range.contains(&head) {
4628 return;
4629 }
4630 }
4631 let rename = self.pending_rename.take().unwrap();
4632 self.remove_blocks([rename.block_id].into_iter().collect(), cx);
4633 self.clear_background_highlights::<Rename>(cx);
4634 }
4635 }
4636
4637 #[cfg(any(test, feature = "test-support"))]
4638 pub fn pending_rename(&self) -> Option<&RenameState> {
4639 self.pending_rename.as_ref()
4640 }
4641
4642 fn refresh_active_diagnostics(&mut self, cx: &mut ViewContext<Editor>) {
4643 if let Some(active_diagnostics) = self.active_diagnostics.as_mut() {
4644 let buffer = self.buffer.read(cx).snapshot(cx);
4645 let primary_range_start = active_diagnostics.primary_range.start.to_offset(&buffer);
4646 let is_valid = buffer
4647 .diagnostics_in_range::<_, usize>(active_diagnostics.primary_range.clone(), false)
4648 .any(|entry| {
4649 entry.diagnostic.is_primary
4650 && !entry.range.is_empty()
4651 && entry.range.start == primary_range_start
4652 && entry.diagnostic.message == active_diagnostics.primary_message
4653 });
4654
4655 if is_valid != active_diagnostics.is_valid {
4656 active_diagnostics.is_valid = is_valid;
4657 let mut new_styles = HashMap::default();
4658 for (block_id, diagnostic) in &active_diagnostics.blocks {
4659 new_styles.insert(
4660 *block_id,
4661 diagnostic_block_renderer(diagnostic.clone(), is_valid),
4662 );
4663 }
4664 self.display_map
4665 .update(cx, |display_map, _| display_map.replace_blocks(new_styles));
4666 }
4667 }
4668 }
4669
4670 fn activate_diagnostics(&mut self, group_id: usize, cx: &mut ViewContext<Self>) {
4671 self.dismiss_diagnostics(cx);
4672 self.active_diagnostics = self.display_map.update(cx, |display_map, cx| {
4673 let buffer = self.buffer.read(cx).snapshot(cx);
4674
4675 let mut primary_range = None;
4676 let mut primary_message = None;
4677 let mut group_end = Point::zero();
4678 let diagnostic_group = buffer
4679 .diagnostic_group::<Point>(group_id)
4680 .map(|entry| {
4681 if entry.range.end > group_end {
4682 group_end = entry.range.end;
4683 }
4684 if entry.diagnostic.is_primary {
4685 primary_range = Some(entry.range.clone());
4686 primary_message = Some(entry.diagnostic.message.clone());
4687 }
4688 entry
4689 })
4690 .collect::<Vec<_>>();
4691 let primary_range = primary_range.unwrap();
4692 let primary_message = primary_message.unwrap();
4693 let primary_range =
4694 buffer.anchor_after(primary_range.start)..buffer.anchor_before(primary_range.end);
4695
4696 let blocks = display_map
4697 .insert_blocks(
4698 diagnostic_group.iter().map(|entry| {
4699 let diagnostic = entry.diagnostic.clone();
4700 let message_height = diagnostic.message.lines().count() as u8;
4701 BlockProperties {
4702 position: buffer.anchor_after(entry.range.start),
4703 height: message_height,
4704 render: diagnostic_block_renderer(diagnostic, true),
4705 disposition: BlockDisposition::Below,
4706 }
4707 }),
4708 cx,
4709 )
4710 .into_iter()
4711 .zip(diagnostic_group.into_iter().map(|entry| entry.diagnostic))
4712 .collect();
4713
4714 Some(ActiveDiagnosticGroup {
4715 primary_range,
4716 primary_message,
4717 blocks,
4718 is_valid: true,
4719 })
4720 });
4721 }
4722
4723 fn dismiss_diagnostics(&mut self, cx: &mut ViewContext<Self>) {
4724 if let Some(active_diagnostic_group) = self.active_diagnostics.take() {
4725 self.display_map.update(cx, |display_map, cx| {
4726 display_map.remove_blocks(active_diagnostic_group.blocks.into_keys().collect(), cx);
4727 });
4728 cx.notify();
4729 }
4730 }
4731
4732 fn build_columnar_selection(
4733 &mut self,
4734 display_map: &DisplaySnapshot,
4735 row: u32,
4736 columns: &Range<u32>,
4737 reversed: bool,
4738 ) -> Option<Selection<Point>> {
4739 let is_empty = columns.start == columns.end;
4740 let line_len = display_map.line_len(row);
4741 if columns.start < line_len || (is_empty && columns.start == line_len) {
4742 let start = DisplayPoint::new(row, columns.start);
4743 let end = DisplayPoint::new(row, cmp::min(columns.end, line_len));
4744 Some(Selection {
4745 id: post_inc(&mut self.next_selection_id),
4746 start: start.to_point(display_map),
4747 end: end.to_point(display_map),
4748 reversed,
4749 goal: SelectionGoal::ColumnRange {
4750 start: columns.start,
4751 end: columns.end,
4752 },
4753 })
4754 } else {
4755 None
4756 }
4757 }
4758
4759 pub fn local_selections_in_range(
4760 &self,
4761 range: Range<Anchor>,
4762 display_map: &DisplaySnapshot,
4763 ) -> Vec<Selection<Point>> {
4764 let buffer = &display_map.buffer_snapshot;
4765
4766 let start_ix = match self
4767 .selections
4768 .binary_search_by(|probe| probe.end.cmp(&range.start, &buffer).unwrap())
4769 {
4770 Ok(ix) | Err(ix) => ix,
4771 };
4772 let end_ix = match self
4773 .selections
4774 .binary_search_by(|probe| probe.start.cmp(&range.end, &buffer).unwrap())
4775 {
4776 Ok(ix) => ix + 1,
4777 Err(ix) => ix,
4778 };
4779
4780 fn point_selection(
4781 selection: &Selection<Anchor>,
4782 buffer: &MultiBufferSnapshot,
4783 ) -> Selection<Point> {
4784 let start = selection.start.to_point(&buffer);
4785 let end = selection.end.to_point(&buffer);
4786 Selection {
4787 id: selection.id,
4788 start,
4789 end,
4790 reversed: selection.reversed,
4791 goal: selection.goal,
4792 }
4793 }
4794
4795 self.selections[start_ix..end_ix]
4796 .iter()
4797 .chain(
4798 self.pending_selection
4799 .as_ref()
4800 .map(|pending| &pending.selection),
4801 )
4802 .map(|s| point_selection(s, &buffer))
4803 .collect()
4804 }
4805
4806 pub fn local_selections<'a, D>(&self, cx: &'a AppContext) -> Vec<Selection<D>>
4807 where
4808 D: 'a + TextDimension + Ord + Sub<D, Output = D>,
4809 {
4810 let buffer = self.buffer.read(cx).snapshot(cx);
4811 let mut selections = self
4812 .resolve_selections::<D, _>(self.selections.iter(), &buffer)
4813 .peekable();
4814
4815 let mut pending_selection = self.pending_selection::<D>(&buffer);
4816
4817 iter::from_fn(move || {
4818 if let Some(pending) = pending_selection.as_mut() {
4819 while let Some(next_selection) = selections.peek() {
4820 if pending.start <= next_selection.end && pending.end >= next_selection.start {
4821 let next_selection = selections.next().unwrap();
4822 if next_selection.start < pending.start {
4823 pending.start = next_selection.start;
4824 }
4825 if next_selection.end > pending.end {
4826 pending.end = next_selection.end;
4827 }
4828 } else if next_selection.end < pending.start {
4829 return selections.next();
4830 } else {
4831 break;
4832 }
4833 }
4834
4835 pending_selection.take()
4836 } else {
4837 selections.next()
4838 }
4839 })
4840 .collect()
4841 }
4842
4843 fn resolve_selections<'a, D, I>(
4844 &self,
4845 selections: I,
4846 snapshot: &MultiBufferSnapshot,
4847 ) -> impl 'a + Iterator<Item = Selection<D>>
4848 where
4849 D: TextDimension + Ord + Sub<D, Output = D>,
4850 I: 'a + IntoIterator<Item = &'a Selection<Anchor>>,
4851 {
4852 let (to_summarize, selections) = selections.into_iter().tee();
4853 let mut summaries = snapshot
4854 .summaries_for_anchors::<D, _>(to_summarize.flat_map(|s| [&s.start, &s.end]))
4855 .into_iter();
4856 selections.map(move |s| Selection {
4857 id: s.id,
4858 start: summaries.next().unwrap(),
4859 end: summaries.next().unwrap(),
4860 reversed: s.reversed,
4861 goal: s.goal,
4862 })
4863 }
4864
4865 fn pending_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
4866 &self,
4867 snapshot: &MultiBufferSnapshot,
4868 ) -> Option<Selection<D>> {
4869 self.pending_selection
4870 .as_ref()
4871 .map(|pending| self.resolve_selection(&pending.selection, &snapshot))
4872 }
4873
4874 fn resolve_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
4875 &self,
4876 selection: &Selection<Anchor>,
4877 buffer: &MultiBufferSnapshot,
4878 ) -> Selection<D> {
4879 Selection {
4880 id: selection.id,
4881 start: selection.start.summary::<D>(&buffer),
4882 end: selection.end.summary::<D>(&buffer),
4883 reversed: selection.reversed,
4884 goal: selection.goal,
4885 }
4886 }
4887
4888 fn selection_count<'a>(&self) -> usize {
4889 let mut count = self.selections.len();
4890 if self.pending_selection.is_some() {
4891 count += 1;
4892 }
4893 count
4894 }
4895
4896 pub fn oldest_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
4897 &self,
4898 cx: &AppContext,
4899 ) -> Selection<D> {
4900 let snapshot = self.buffer.read(cx).read(cx);
4901 self.selections
4902 .iter()
4903 .min_by_key(|s| s.id)
4904 .map(|selection| self.resolve_selection(selection, &snapshot))
4905 .or_else(|| self.pending_selection(&snapshot))
4906 .unwrap()
4907 }
4908
4909 pub fn newest_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
4910 &self,
4911 cx: &AppContext,
4912 ) -> Selection<D> {
4913 self.resolve_selection(
4914 self.newest_anchor_selection(),
4915 &self.buffer.read(cx).read(cx),
4916 )
4917 }
4918
4919 pub fn newest_selection_with_snapshot<D: TextDimension + Ord + Sub<D, Output = D>>(
4920 &self,
4921 snapshot: &MultiBufferSnapshot,
4922 ) -> Selection<D> {
4923 self.resolve_selection(self.newest_anchor_selection(), snapshot)
4924 }
4925
4926 pub fn newest_anchor_selection(&self) -> &Selection<Anchor> {
4927 self.pending_selection
4928 .as_ref()
4929 .map(|s| &s.selection)
4930 .or_else(|| self.selections.iter().max_by_key(|s| s.id))
4931 .unwrap()
4932 }
4933
4934 pub fn update_selections<T>(
4935 &mut self,
4936 mut selections: Vec<Selection<T>>,
4937 autoscroll: Option<Autoscroll>,
4938 cx: &mut ViewContext<Self>,
4939 ) where
4940 T: ToOffset + ToPoint + Ord + std::marker::Copy + std::fmt::Debug,
4941 {
4942 let buffer = self.buffer.read(cx).snapshot(cx);
4943 selections.sort_unstable_by_key(|s| s.start);
4944
4945 // Merge overlapping selections.
4946 let mut i = 1;
4947 while i < selections.len() {
4948 if selections[i - 1].end >= selections[i].start {
4949 let removed = selections.remove(i);
4950 if removed.start < selections[i - 1].start {
4951 selections[i - 1].start = removed.start;
4952 }
4953 if removed.end > selections[i - 1].end {
4954 selections[i - 1].end = removed.end;
4955 }
4956 } else {
4957 i += 1;
4958 }
4959 }
4960
4961 if let Some(autoscroll) = autoscroll {
4962 self.request_autoscroll(autoscroll, cx);
4963 }
4964
4965 self.set_selections(
4966 Arc::from_iter(selections.into_iter().map(|selection| {
4967 let end_bias = if selection.end > selection.start {
4968 Bias::Left
4969 } else {
4970 Bias::Right
4971 };
4972 Selection {
4973 id: selection.id,
4974 start: buffer.anchor_after(selection.start),
4975 end: buffer.anchor_at(selection.end, end_bias),
4976 reversed: selection.reversed,
4977 goal: selection.goal,
4978 }
4979 })),
4980 None,
4981 cx,
4982 );
4983 }
4984
4985 /// Compute new ranges for any selections that were located in excerpts that have
4986 /// since been removed.
4987 ///
4988 /// Returns a `HashMap` indicating which selections whose former head position
4989 /// was no longer present. The keys of the map are selection ids. The values are
4990 /// the id of the new excerpt where the head of the selection has been moved.
4991 pub fn refresh_selections(&mut self, cx: &mut ViewContext<Self>) -> HashMap<usize, ExcerptId> {
4992 let snapshot = self.buffer.read(cx).read(cx);
4993 let anchors_with_status = snapshot.refresh_anchors(
4994 self.selections
4995 .iter()
4996 .flat_map(|selection| [&selection.start, &selection.end]),
4997 );
4998 let offsets =
4999 snapshot.summaries_for_anchors::<usize, _>(anchors_with_status.iter().map(|a| &a.1));
5000 assert_eq!(anchors_with_status.len(), 2 * self.selections.len());
5001 assert_eq!(offsets.len(), anchors_with_status.len());
5002
5003 let offsets = offsets.chunks(2);
5004 let statuses = anchors_with_status
5005 .chunks(2)
5006 .map(|a| (a[0].0 / 2, a[0].2, a[1].2));
5007
5008 let mut selections_with_lost_position = HashMap::default();
5009 let new_selections = offsets
5010 .zip(statuses)
5011 .map(|(offsets, (selection_ix, kept_start, kept_end))| {
5012 let selection = &self.selections[selection_ix];
5013 let kept_head = if selection.reversed {
5014 kept_start
5015 } else {
5016 kept_end
5017 };
5018 if !kept_head {
5019 selections_with_lost_position
5020 .insert(selection.id, selection.head().excerpt_id.clone());
5021 }
5022
5023 Selection {
5024 id: selection.id,
5025 start: offsets[0],
5026 end: offsets[1],
5027 reversed: selection.reversed,
5028 goal: selection.goal,
5029 }
5030 })
5031 .collect();
5032 drop(snapshot);
5033 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
5034 selections_with_lost_position
5035 }
5036
5037 fn set_selections(
5038 &mut self,
5039 selections: Arc<[Selection<Anchor>]>,
5040 pending_selection: Option<PendingSelection>,
5041 cx: &mut ViewContext<Self>,
5042 ) {
5043 assert!(
5044 !selections.is_empty() || pending_selection.is_some(),
5045 "must have at least one selection"
5046 );
5047
5048 let old_cursor_position = self.newest_anchor_selection().head();
5049
5050 self.selections = selections;
5051 self.pending_selection = pending_selection;
5052 if self.focused {
5053 self.buffer.update(cx, |buffer, cx| {
5054 buffer.set_active_selections(&self.selections, cx)
5055 });
5056 }
5057
5058 let display_map = self
5059 .display_map
5060 .update(cx, |display_map, cx| display_map.snapshot(cx));
5061 let buffer = &display_map.buffer_snapshot;
5062 self.add_selections_state = None;
5063 self.select_next_state = None;
5064 self.select_larger_syntax_node_stack.clear();
5065 self.autoclose_stack.invalidate(&self.selections, &buffer);
5066 self.snippet_stack.invalidate(&self.selections, &buffer);
5067 self.invalidate_rename_range(&buffer, cx);
5068
5069 let new_cursor_position = self.newest_anchor_selection().head();
5070
5071 self.push_to_nav_history(
5072 old_cursor_position.clone(),
5073 Some(new_cursor_position.to_point(&buffer)),
5074 cx,
5075 );
5076
5077 let completion_menu = match self.context_menu.as_mut() {
5078 Some(ContextMenu::Completions(menu)) => Some(menu),
5079 _ => {
5080 self.context_menu.take();
5081 None
5082 }
5083 };
5084
5085 if let Some(completion_menu) = completion_menu {
5086 let cursor_position = new_cursor_position.to_offset(&buffer);
5087 let (word_range, kind) =
5088 buffer.surrounding_word(completion_menu.initial_position.clone());
5089 if kind == Some(CharKind::Word) && word_range.to_inclusive().contains(&cursor_position)
5090 {
5091 let query = Self::completion_query(&buffer, cursor_position);
5092 cx.background()
5093 .block(completion_menu.filter(query.as_deref(), cx.background().clone()));
5094 self.show_completions(&ShowCompletions, cx);
5095 } else {
5096 self.hide_context_menu(cx);
5097 }
5098 }
5099
5100 if old_cursor_position.to_display_point(&display_map).row()
5101 != new_cursor_position.to_display_point(&display_map).row()
5102 {
5103 self.available_code_actions.take();
5104 }
5105 self.refresh_code_actions(cx);
5106 self.refresh_document_highlights(cx);
5107
5108 self.pause_cursor_blinking(cx);
5109 cx.emit(Event::SelectionsChanged);
5110 }
5111
5112 pub fn request_autoscroll(&mut self, autoscroll: Autoscroll, cx: &mut ViewContext<Self>) {
5113 self.autoscroll_request = Some(autoscroll);
5114 cx.notify();
5115 }
5116
5117 fn start_transaction(&mut self, cx: &mut ViewContext<Self>) {
5118 self.start_transaction_at(Instant::now(), cx);
5119 }
5120
5121 fn start_transaction_at(&mut self, now: Instant, cx: &mut ViewContext<Self>) {
5122 self.end_selection(cx);
5123 if let Some(tx_id) = self
5124 .buffer
5125 .update(cx, |buffer, cx| buffer.start_transaction_at(now, cx))
5126 {
5127 self.selection_history
5128 .insert(tx_id, (self.selections.clone(), None));
5129 }
5130 }
5131
5132 fn end_transaction(&mut self, cx: &mut ViewContext<Self>) {
5133 self.end_transaction_at(Instant::now(), cx);
5134 }
5135
5136 fn end_transaction_at(&mut self, now: Instant, cx: &mut ViewContext<Self>) {
5137 if let Some(tx_id) = self
5138 .buffer
5139 .update(cx, |buffer, cx| buffer.end_transaction_at(now, cx))
5140 {
5141 if let Some((_, end_selections)) = self.selection_history.get_mut(&tx_id) {
5142 *end_selections = Some(self.selections.clone());
5143 } else {
5144 log::error!("unexpectedly ended a transaction that wasn't started by this editor");
5145 }
5146 }
5147 }
5148
5149 pub fn page_up(&mut self, _: &PageUp, _: &mut ViewContext<Self>) {
5150 log::info!("Editor::page_up");
5151 }
5152
5153 pub fn page_down(&mut self, _: &PageDown, _: &mut ViewContext<Self>) {
5154 log::info!("Editor::page_down");
5155 }
5156
5157 pub fn fold(&mut self, _: &Fold, cx: &mut ViewContext<Self>) {
5158 let mut fold_ranges = Vec::new();
5159
5160 let selections = self.local_selections::<Point>(cx);
5161 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
5162 for selection in selections {
5163 let range = selection.display_range(&display_map).sorted();
5164 let buffer_start_row = range.start.to_point(&display_map).row;
5165
5166 for row in (0..=range.end.row()).rev() {
5167 if self.is_line_foldable(&display_map, row) && !display_map.is_line_folded(row) {
5168 let fold_range = self.foldable_range_for_line(&display_map, row);
5169 if fold_range.end.row >= buffer_start_row {
5170 fold_ranges.push(fold_range);
5171 if row <= range.start.row() {
5172 break;
5173 }
5174 }
5175 }
5176 }
5177 }
5178
5179 self.fold_ranges(fold_ranges, cx);
5180 }
5181
5182 pub fn unfold(&mut self, _: &Unfold, cx: &mut ViewContext<Self>) {
5183 let selections = self.local_selections::<Point>(cx);
5184 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
5185 let buffer = &display_map.buffer_snapshot;
5186 let ranges = selections
5187 .iter()
5188 .map(|s| {
5189 let range = s.display_range(&display_map).sorted();
5190 let mut start = range.start.to_point(&display_map);
5191 let mut end = range.end.to_point(&display_map);
5192 start.column = 0;
5193 end.column = buffer.line_len(end.row);
5194 start..end
5195 })
5196 .collect::<Vec<_>>();
5197 self.unfold_ranges(ranges, cx);
5198 }
5199
5200 fn is_line_foldable(&self, display_map: &DisplaySnapshot, display_row: u32) -> bool {
5201 let max_point = display_map.max_point();
5202 if display_row >= max_point.row() {
5203 false
5204 } else {
5205 let (start_indent, is_blank) = display_map.line_indent(display_row);
5206 if is_blank {
5207 false
5208 } else {
5209 for display_row in display_row + 1..=max_point.row() {
5210 let (indent, is_blank) = display_map.line_indent(display_row);
5211 if !is_blank {
5212 return indent > start_indent;
5213 }
5214 }
5215 false
5216 }
5217 }
5218 }
5219
5220 fn foldable_range_for_line(
5221 &self,
5222 display_map: &DisplaySnapshot,
5223 start_row: u32,
5224 ) -> Range<Point> {
5225 let max_point = display_map.max_point();
5226
5227 let (start_indent, _) = display_map.line_indent(start_row);
5228 let start = DisplayPoint::new(start_row, display_map.line_len(start_row));
5229 let mut end = None;
5230 for row in start_row + 1..=max_point.row() {
5231 let (indent, is_blank) = display_map.line_indent(row);
5232 if !is_blank && indent <= start_indent {
5233 end = Some(DisplayPoint::new(row - 1, display_map.line_len(row - 1)));
5234 break;
5235 }
5236 }
5237
5238 let end = end.unwrap_or(max_point);
5239 return start.to_point(display_map)..end.to_point(display_map);
5240 }
5241
5242 pub fn fold_selected_ranges(&mut self, _: &FoldSelectedRanges, cx: &mut ViewContext<Self>) {
5243 let selections = self.local_selections::<Point>(cx);
5244 let ranges = selections.into_iter().map(|s| s.start..s.end);
5245 self.fold_ranges(ranges, cx);
5246 }
5247
5248 fn fold_ranges<T: ToOffset>(
5249 &mut self,
5250 ranges: impl IntoIterator<Item = Range<T>>,
5251 cx: &mut ViewContext<Self>,
5252 ) {
5253 let mut ranges = ranges.into_iter().peekable();
5254 if ranges.peek().is_some() {
5255 self.display_map.update(cx, |map, cx| map.fold(ranges, cx));
5256 self.request_autoscroll(Autoscroll::Fit, cx);
5257 cx.notify();
5258 }
5259 }
5260
5261 fn unfold_ranges<T: ToOffset>(&mut self, ranges: Vec<Range<T>>, cx: &mut ViewContext<Self>) {
5262 if !ranges.is_empty() {
5263 self.display_map
5264 .update(cx, |map, cx| map.unfold(ranges, cx));
5265 self.request_autoscroll(Autoscroll::Fit, cx);
5266 cx.notify();
5267 }
5268 }
5269
5270 pub fn insert_blocks(
5271 &mut self,
5272 blocks: impl IntoIterator<Item = BlockProperties<Anchor>>,
5273 cx: &mut ViewContext<Self>,
5274 ) -> Vec<BlockId> {
5275 let blocks = self
5276 .display_map
5277 .update(cx, |display_map, cx| display_map.insert_blocks(blocks, cx));
5278 self.request_autoscroll(Autoscroll::Fit, cx);
5279 blocks
5280 }
5281
5282 pub fn replace_blocks(
5283 &mut self,
5284 blocks: HashMap<BlockId, RenderBlock>,
5285 cx: &mut ViewContext<Self>,
5286 ) {
5287 self.display_map
5288 .update(cx, |display_map, _| display_map.replace_blocks(blocks));
5289 self.request_autoscroll(Autoscroll::Fit, cx);
5290 }
5291
5292 pub fn remove_blocks(&mut self, block_ids: HashSet<BlockId>, cx: &mut ViewContext<Self>) {
5293 self.display_map.update(cx, |display_map, cx| {
5294 display_map.remove_blocks(block_ids, cx)
5295 });
5296 }
5297
5298 pub fn longest_row(&self, cx: &mut MutableAppContext) -> u32 {
5299 self.display_map
5300 .update(cx, |map, cx| map.snapshot(cx))
5301 .longest_row()
5302 }
5303
5304 pub fn max_point(&self, cx: &mut MutableAppContext) -> DisplayPoint {
5305 self.display_map
5306 .update(cx, |map, cx| map.snapshot(cx))
5307 .max_point()
5308 }
5309
5310 pub fn text(&self, cx: &AppContext) -> String {
5311 self.buffer.read(cx).read(cx).text()
5312 }
5313
5314 pub fn set_text(&mut self, text: impl Into<String>, cx: &mut ViewContext<Self>) {
5315 self.buffer
5316 .read(cx)
5317 .as_singleton()
5318 .expect("you can only call set_text on editors for singleton buffers")
5319 .update(cx, |buffer, cx| buffer.set_text(text, cx));
5320 }
5321
5322 pub fn display_text(&self, cx: &mut MutableAppContext) -> String {
5323 self.display_map
5324 .update(cx, |map, cx| map.snapshot(cx))
5325 .text()
5326 }
5327
5328 pub fn soft_wrap_mode(&self, cx: &AppContext) -> SoftWrap {
5329 let language = self.language(cx);
5330 let settings = cx.app_state::<Settings>();
5331 let mode = self
5332 .soft_wrap_mode_override
5333 .unwrap_or_else(|| settings.soft_wrap(language));
5334 match mode {
5335 settings::SoftWrap::None => SoftWrap::None,
5336 settings::SoftWrap::EditorWidth => SoftWrap::EditorWidth,
5337 settings::SoftWrap::PreferredLineLength => {
5338 SoftWrap::Column(settings.preferred_line_length(language))
5339 }
5340 }
5341 }
5342
5343 pub fn set_soft_wrap_mode(&mut self, mode: settings::SoftWrap, cx: &mut ViewContext<Self>) {
5344 self.soft_wrap_mode_override = Some(mode);
5345 cx.notify();
5346 }
5347
5348 pub fn set_wrap_width(&self, width: Option<f32>, cx: &mut MutableAppContext) -> bool {
5349 self.display_map
5350 .update(cx, |map, cx| map.set_wrap_width(width, cx))
5351 }
5352
5353 pub fn highlight_rows(&mut self, rows: Option<Range<u32>>) {
5354 self.highlighted_rows = rows;
5355 }
5356
5357 pub fn highlighted_rows(&self) -> Option<Range<u32>> {
5358 self.highlighted_rows.clone()
5359 }
5360
5361 pub fn highlight_background<T: 'static>(
5362 &mut self,
5363 ranges: Vec<Range<Anchor>>,
5364 color: Color,
5365 cx: &mut ViewContext<Self>,
5366 ) {
5367 self.background_highlights
5368 .insert(TypeId::of::<T>(), (color, ranges));
5369 cx.notify();
5370 }
5371
5372 pub fn clear_background_highlights<T: 'static>(
5373 &mut self,
5374 cx: &mut ViewContext<Self>,
5375 ) -> Option<(Color, Vec<Range<Anchor>>)> {
5376 cx.notify();
5377 self.background_highlights.remove(&TypeId::of::<T>())
5378 }
5379
5380 #[cfg(feature = "test-support")]
5381 pub fn all_background_highlights(
5382 &mut self,
5383 cx: &mut ViewContext<Self>,
5384 ) -> Vec<(Range<DisplayPoint>, Color)> {
5385 let snapshot = self.snapshot(cx);
5386 let buffer = &snapshot.buffer_snapshot;
5387 let start = buffer.anchor_before(0);
5388 let end = buffer.anchor_after(buffer.len());
5389 self.background_highlights_in_range(start..end, &snapshot)
5390 }
5391
5392 pub fn background_highlights_for_type<T: 'static>(&self) -> Option<(Color, &[Range<Anchor>])> {
5393 self.background_highlights
5394 .get(&TypeId::of::<T>())
5395 .map(|(color, ranges)| (*color, ranges.as_slice()))
5396 }
5397
5398 pub fn background_highlights_in_range(
5399 &self,
5400 search_range: Range<Anchor>,
5401 display_snapshot: &DisplaySnapshot,
5402 ) -> Vec<(Range<DisplayPoint>, Color)> {
5403 let mut results = Vec::new();
5404 let buffer = &display_snapshot.buffer_snapshot;
5405 for (color, ranges) in self.background_highlights.values() {
5406 let start_ix = match ranges.binary_search_by(|probe| {
5407 let cmp = probe.end.cmp(&search_range.start, &buffer).unwrap();
5408 if cmp.is_gt() {
5409 Ordering::Greater
5410 } else {
5411 Ordering::Less
5412 }
5413 }) {
5414 Ok(i) | Err(i) => i,
5415 };
5416 for range in &ranges[start_ix..] {
5417 if range.start.cmp(&search_range.end, &buffer).unwrap().is_ge() {
5418 break;
5419 }
5420 let start = range
5421 .start
5422 .to_point(buffer)
5423 .to_display_point(display_snapshot);
5424 let end = range
5425 .end
5426 .to_point(buffer)
5427 .to_display_point(display_snapshot);
5428 results.push((start..end, *color))
5429 }
5430 }
5431 results
5432 }
5433
5434 pub fn highlight_text<T: 'static>(
5435 &mut self,
5436 ranges: Vec<Range<Anchor>>,
5437 style: HighlightStyle,
5438 cx: &mut ViewContext<Self>,
5439 ) {
5440 self.display_map.update(cx, |map, _| {
5441 map.highlight_text(TypeId::of::<T>(), ranges, style)
5442 });
5443 cx.notify();
5444 }
5445
5446 pub fn clear_text_highlights<T: 'static>(
5447 &mut self,
5448 cx: &mut ViewContext<Self>,
5449 ) -> Option<Arc<(HighlightStyle, Vec<Range<Anchor>>)>> {
5450 cx.notify();
5451 self.display_map
5452 .update(cx, |map, _| map.clear_text_highlights(TypeId::of::<T>()))
5453 }
5454
5455 fn next_blink_epoch(&mut self) -> usize {
5456 self.blink_epoch += 1;
5457 self.blink_epoch
5458 }
5459
5460 fn pause_cursor_blinking(&mut self, cx: &mut ViewContext<Self>) {
5461 if !self.focused {
5462 return;
5463 }
5464
5465 self.show_local_cursors = true;
5466 cx.notify();
5467
5468 let epoch = self.next_blink_epoch();
5469 cx.spawn(|this, mut cx| {
5470 let this = this.downgrade();
5471 async move {
5472 Timer::after(CURSOR_BLINK_INTERVAL).await;
5473 if let Some(this) = this.upgrade(&cx) {
5474 this.update(&mut cx, |this, cx| this.resume_cursor_blinking(epoch, cx))
5475 }
5476 }
5477 })
5478 .detach();
5479 }
5480
5481 fn resume_cursor_blinking(&mut self, epoch: usize, cx: &mut ViewContext<Self>) {
5482 if epoch == self.blink_epoch {
5483 self.blinking_paused = false;
5484 self.blink_cursors(epoch, cx);
5485 }
5486 }
5487
5488 fn blink_cursors(&mut self, epoch: usize, cx: &mut ViewContext<Self>) {
5489 if epoch == self.blink_epoch && self.focused && !self.blinking_paused {
5490 self.show_local_cursors = !self.show_local_cursors;
5491 cx.notify();
5492
5493 let epoch = self.next_blink_epoch();
5494 cx.spawn(|this, mut cx| {
5495 let this = this.downgrade();
5496 async move {
5497 Timer::after(CURSOR_BLINK_INTERVAL).await;
5498 if let Some(this) = this.upgrade(&cx) {
5499 this.update(&mut cx, |this, cx| this.blink_cursors(epoch, cx));
5500 }
5501 }
5502 })
5503 .detach();
5504 }
5505 }
5506
5507 pub fn show_local_cursors(&self) -> bool {
5508 self.show_local_cursors
5509 }
5510
5511 fn on_buffer_changed(&mut self, _: ModelHandle<MultiBuffer>, cx: &mut ViewContext<Self>) {
5512 cx.notify();
5513 }
5514
5515 fn on_buffer_event(
5516 &mut self,
5517 _: ModelHandle<MultiBuffer>,
5518 event: &language::Event,
5519 cx: &mut ViewContext<Self>,
5520 ) {
5521 match event {
5522 language::Event::Edited => {
5523 self.refresh_active_diagnostics(cx);
5524 self.refresh_code_actions(cx);
5525 cx.emit(Event::Edited);
5526 }
5527 language::Event::Dirtied => cx.emit(Event::Dirtied),
5528 language::Event::Saved => cx.emit(Event::Saved),
5529 language::Event::FileHandleChanged => cx.emit(Event::TitleChanged),
5530 language::Event::Reloaded => cx.emit(Event::TitleChanged),
5531 language::Event::Closed => cx.emit(Event::Closed),
5532 language::Event::DiagnosticsUpdated => {
5533 self.refresh_active_diagnostics(cx);
5534 }
5535 _ => {}
5536 }
5537 }
5538
5539 fn on_display_map_changed(&mut self, _: ModelHandle<DisplayMap>, cx: &mut ViewContext<Self>) {
5540 cx.notify();
5541 }
5542
5543 pub fn set_searchable(&mut self, searchable: bool) {
5544 self.searchable = searchable;
5545 }
5546
5547 pub fn searchable(&self) -> bool {
5548 self.searchable
5549 }
5550
5551 fn open_excerpts(workspace: &mut Workspace, _: &OpenExcerpts, cx: &mut ViewContext<Workspace>) {
5552 let active_item = workspace.active_item(cx);
5553 let editor_handle = if let Some(editor) = active_item
5554 .as_ref()
5555 .and_then(|item| item.act_as::<Self>(cx))
5556 {
5557 editor
5558 } else {
5559 cx.propagate_action();
5560 return;
5561 };
5562
5563 let editor = editor_handle.read(cx);
5564 let buffer = editor.buffer.read(cx);
5565 if buffer.is_singleton() {
5566 cx.propagate_action();
5567 return;
5568 }
5569
5570 let mut new_selections_by_buffer = HashMap::default();
5571 for selection in editor.local_selections::<usize>(cx) {
5572 for (buffer, mut range) in
5573 buffer.range_to_buffer_ranges(selection.start..selection.end, cx)
5574 {
5575 if selection.reversed {
5576 mem::swap(&mut range.start, &mut range.end);
5577 }
5578 new_selections_by_buffer
5579 .entry(buffer)
5580 .or_insert(Vec::new())
5581 .push(range)
5582 }
5583 }
5584
5585 editor_handle.update(cx, |editor, cx| {
5586 editor.push_to_nav_history(editor.newest_anchor_selection().head(), None, cx);
5587 });
5588 let nav_history = workspace.active_pane().read(cx).nav_history().clone();
5589 nav_history.borrow_mut().disable();
5590
5591 // We defer the pane interaction because we ourselves are a workspace item
5592 // and activating a new item causes the pane to call a method on us reentrantly,
5593 // which panics if we're on the stack.
5594 cx.defer(move |workspace, cx| {
5595 workspace.activate_next_pane(cx);
5596
5597 for (buffer, ranges) in new_selections_by_buffer.into_iter() {
5598 let editor = Self::find_or_create(workspace, buffer, cx);
5599 editor.update(cx, |editor, cx| {
5600 editor.select_ranges(ranges, Some(Autoscroll::Newest), cx);
5601 });
5602 }
5603
5604 nav_history.borrow_mut().enable();
5605 });
5606 }
5607}
5608
5609impl EditorSnapshot {
5610 pub fn is_focused(&self) -> bool {
5611 self.is_focused
5612 }
5613
5614 pub fn placeholder_text(&self) -> Option<&Arc<str>> {
5615 self.placeholder_text.as_ref()
5616 }
5617
5618 pub fn scroll_position(&self) -> Vector2F {
5619 compute_scroll_position(
5620 &self.display_snapshot,
5621 self.scroll_position,
5622 &self.scroll_top_anchor,
5623 )
5624 }
5625}
5626
5627impl Deref for EditorSnapshot {
5628 type Target = DisplaySnapshot;
5629
5630 fn deref(&self) -> &Self::Target {
5631 &self.display_snapshot
5632 }
5633}
5634
5635fn compute_scroll_position(
5636 snapshot: &DisplaySnapshot,
5637 mut scroll_position: Vector2F,
5638 scroll_top_anchor: &Option<Anchor>,
5639) -> Vector2F {
5640 if let Some(anchor) = scroll_top_anchor {
5641 let scroll_top = anchor.to_display_point(snapshot).row() as f32;
5642 scroll_position.set_y(scroll_top + scroll_position.y());
5643 } else {
5644 scroll_position.set_y(0.);
5645 }
5646 scroll_position
5647}
5648
5649#[derive(Copy, Clone)]
5650pub enum Event {
5651 Activate,
5652 Edited,
5653 Blurred,
5654 Dirtied,
5655 Saved,
5656 TitleChanged,
5657 SelectionsChanged,
5658 Closed,
5659}
5660
5661impl Entity for Editor {
5662 type Event = Event;
5663}
5664
5665impl View for Editor {
5666 fn render(&mut self, cx: &mut RenderContext<Self>) -> ElementBox {
5667 let style = self.style(cx);
5668 self.display_map.update(cx, |map, cx| {
5669 map.set_font(style.text.font_id, style.text.font_size, cx)
5670 });
5671 EditorElement::new(self.handle.clone(), style.clone(), self.cursor_shape).boxed()
5672 }
5673
5674 fn ui_name() -> &'static str {
5675 "Editor"
5676 }
5677
5678 fn on_focus(&mut self, cx: &mut ViewContext<Self>) {
5679 if let Some(rename) = self.pending_rename.as_ref() {
5680 cx.focus(&rename.editor);
5681 } else {
5682 self.focused = true;
5683 self.blink_cursors(self.blink_epoch, cx);
5684 self.buffer.update(cx, |buffer, cx| {
5685 buffer.finalize_last_transaction(cx);
5686 buffer.set_active_selections(&self.selections, cx)
5687 });
5688 }
5689 }
5690
5691 fn on_blur(&mut self, cx: &mut ViewContext<Self>) {
5692 self.focused = false;
5693 self.buffer
5694 .update(cx, |buffer, cx| buffer.remove_active_selections(cx));
5695 self.hide_context_menu(cx);
5696 cx.emit(Event::Blurred);
5697 cx.notify();
5698 }
5699
5700 fn keymap_context(&self, _: &AppContext) -> gpui::keymap::Context {
5701 let mut cx = Self::default_keymap_context();
5702 let mode = match self.mode {
5703 EditorMode::SingleLine => "single_line",
5704 EditorMode::AutoHeight { .. } => "auto_height",
5705 EditorMode::Full => "full",
5706 };
5707 cx.map.insert("mode".into(), mode.into());
5708 if self.pending_rename.is_some() {
5709 cx.set.insert("renaming".into());
5710 }
5711 match self.context_menu.as_ref() {
5712 Some(ContextMenu::Completions(_)) => {
5713 cx.set.insert("showing_completions".into());
5714 }
5715 Some(ContextMenu::CodeActions(_)) => {
5716 cx.set.insert("showing_code_actions".into());
5717 }
5718 None => {}
5719 }
5720 cx
5721 }
5722}
5723
5724fn build_style(
5725 settings: &Settings,
5726 get_field_editor_theme: Option<GetFieldEditorTheme>,
5727 override_text_style: Option<&OverrideTextStyle>,
5728 cx: &AppContext,
5729) -> EditorStyle {
5730 let font_cache = cx.font_cache();
5731
5732 let mut theme = settings.theme.editor.clone();
5733 let mut style = if let Some(get_field_editor_theme) = get_field_editor_theme {
5734 let field_editor_theme = get_field_editor_theme(&settings.theme);
5735 theme.text_color = field_editor_theme.text.color;
5736 theme.selection = field_editor_theme.selection;
5737 theme.background = field_editor_theme
5738 .container
5739 .background_color
5740 .unwrap_or_default();
5741 EditorStyle {
5742 text: field_editor_theme.text,
5743 placeholder_text: field_editor_theme.placeholder_text,
5744 theme,
5745 }
5746 } else {
5747 let font_family_id = settings.buffer_font_family;
5748 let font_family_name = cx.font_cache().family_name(font_family_id).unwrap();
5749 let font_properties = Default::default();
5750 let font_id = font_cache
5751 .select_font(font_family_id, &font_properties)
5752 .unwrap();
5753 let font_size = settings.buffer_font_size;
5754 EditorStyle {
5755 text: TextStyle {
5756 color: settings.theme.editor.text_color,
5757 font_family_name,
5758 font_family_id,
5759 font_id,
5760 font_size,
5761 font_properties,
5762 underline: Default::default(),
5763 },
5764 placeholder_text: None,
5765 theme,
5766 }
5767 };
5768
5769 if let Some(highlight_style) = override_text_style.and_then(|build_style| build_style(&style)) {
5770 if let Some(highlighted) = style
5771 .text
5772 .clone()
5773 .highlight(highlight_style, font_cache)
5774 .log_err()
5775 {
5776 style.text = highlighted;
5777 }
5778 }
5779
5780 style
5781}
5782
5783impl<T: ToPoint + ToOffset> SelectionExt for Selection<T> {
5784 fn point_range(&self, buffer: &MultiBufferSnapshot) -> Range<Point> {
5785 let start = self.start.to_point(buffer);
5786 let end = self.end.to_point(buffer);
5787 if self.reversed {
5788 end..start
5789 } else {
5790 start..end
5791 }
5792 }
5793
5794 fn offset_range(&self, buffer: &MultiBufferSnapshot) -> Range<usize> {
5795 let start = self.start.to_offset(buffer);
5796 let end = self.end.to_offset(buffer);
5797 if self.reversed {
5798 end..start
5799 } else {
5800 start..end
5801 }
5802 }
5803
5804 fn display_range(&self, map: &DisplaySnapshot) -> Range<DisplayPoint> {
5805 let start = self
5806 .start
5807 .to_point(&map.buffer_snapshot)
5808 .to_display_point(map);
5809 let end = self
5810 .end
5811 .to_point(&map.buffer_snapshot)
5812 .to_display_point(map);
5813 if self.reversed {
5814 end..start
5815 } else {
5816 start..end
5817 }
5818 }
5819
5820 fn spanned_rows(
5821 &self,
5822 include_end_if_at_line_start: bool,
5823 map: &DisplaySnapshot,
5824 ) -> Range<u32> {
5825 let start = self.start.to_point(&map.buffer_snapshot);
5826 let mut end = self.end.to_point(&map.buffer_snapshot);
5827 if !include_end_if_at_line_start && start.row != end.row && end.column == 0 {
5828 end.row -= 1;
5829 }
5830
5831 let buffer_start = map.prev_line_boundary(start).0;
5832 let buffer_end = map.next_line_boundary(end).0;
5833 buffer_start.row..buffer_end.row + 1
5834 }
5835}
5836
5837impl<T: InvalidationRegion> InvalidationStack<T> {
5838 fn invalidate<S>(&mut self, selections: &[Selection<S>], buffer: &MultiBufferSnapshot)
5839 where
5840 S: Clone + ToOffset,
5841 {
5842 while let Some(region) = self.last() {
5843 let all_selections_inside_invalidation_ranges =
5844 if selections.len() == region.ranges().len() {
5845 selections
5846 .iter()
5847 .zip(region.ranges().iter().map(|r| r.to_offset(&buffer)))
5848 .all(|(selection, invalidation_range)| {
5849 let head = selection.head().to_offset(&buffer);
5850 invalidation_range.start <= head && invalidation_range.end >= head
5851 })
5852 } else {
5853 false
5854 };
5855
5856 if all_selections_inside_invalidation_ranges {
5857 break;
5858 } else {
5859 self.pop();
5860 }
5861 }
5862 }
5863}
5864
5865impl<T> Default for InvalidationStack<T> {
5866 fn default() -> Self {
5867 Self(Default::default())
5868 }
5869}
5870
5871impl<T> Deref for InvalidationStack<T> {
5872 type Target = Vec<T>;
5873
5874 fn deref(&self) -> &Self::Target {
5875 &self.0
5876 }
5877}
5878
5879impl<T> DerefMut for InvalidationStack<T> {
5880 fn deref_mut(&mut self) -> &mut Self::Target {
5881 &mut self.0
5882 }
5883}
5884
5885impl InvalidationRegion for BracketPairState {
5886 fn ranges(&self) -> &[Range<Anchor>] {
5887 &self.ranges
5888 }
5889}
5890
5891impl InvalidationRegion for SnippetState {
5892 fn ranges(&self) -> &[Range<Anchor>] {
5893 &self.ranges[self.active_index]
5894 }
5895}
5896
5897impl Deref for EditorStyle {
5898 type Target = theme::Editor;
5899
5900 fn deref(&self) -> &Self::Target {
5901 &self.theme
5902 }
5903}
5904
5905pub fn diagnostic_block_renderer(diagnostic: Diagnostic, is_valid: bool) -> RenderBlock {
5906 let mut highlighted_lines = Vec::new();
5907 for line in diagnostic.message.lines() {
5908 highlighted_lines.push(highlight_diagnostic_message(line));
5909 }
5910
5911 Arc::new(move |cx: &BlockContext| {
5912 let settings = cx.app_state::<Settings>();
5913 let theme = &settings.theme.editor;
5914 let style = diagnostic_style(diagnostic.severity, is_valid, theme);
5915 let font_size = (style.text_scale_factor * settings.buffer_font_size).round();
5916 Flex::column()
5917 .with_children(highlighted_lines.iter().map(|(line, highlights)| {
5918 Label::new(
5919 line.clone(),
5920 style.message.clone().with_font_size(font_size),
5921 )
5922 .with_highlights(highlights.clone())
5923 .contained()
5924 .with_margin_left(cx.anchor_x)
5925 .boxed()
5926 }))
5927 .aligned()
5928 .left()
5929 .boxed()
5930 })
5931}
5932
5933pub fn highlight_diagnostic_message(message: &str) -> (String, Vec<usize>) {
5934 let mut message_without_backticks = String::new();
5935 let mut prev_offset = 0;
5936 let mut inside_block = false;
5937 let mut highlights = Vec::new();
5938 for (match_ix, (offset, _)) in message
5939 .match_indices('`')
5940 .chain([(message.len(), "")])
5941 .enumerate()
5942 {
5943 message_without_backticks.push_str(&message[prev_offset..offset]);
5944 if inside_block {
5945 highlights.extend(prev_offset - match_ix..offset - match_ix);
5946 }
5947
5948 inside_block = !inside_block;
5949 prev_offset = offset + 1;
5950 }
5951
5952 (message_without_backticks, highlights)
5953}
5954
5955pub fn diagnostic_style(
5956 severity: DiagnosticSeverity,
5957 valid: bool,
5958 theme: &theme::Editor,
5959) -> DiagnosticStyle {
5960 match (severity, valid) {
5961 (DiagnosticSeverity::ERROR, true) => theme.error_diagnostic.clone(),
5962 (DiagnosticSeverity::ERROR, false) => theme.invalid_error_diagnostic.clone(),
5963 (DiagnosticSeverity::WARNING, true) => theme.warning_diagnostic.clone(),
5964 (DiagnosticSeverity::WARNING, false) => theme.invalid_warning_diagnostic.clone(),
5965 (DiagnosticSeverity::INFORMATION, true) => theme.information_diagnostic.clone(),
5966 (DiagnosticSeverity::INFORMATION, false) => theme.invalid_information_diagnostic.clone(),
5967 (DiagnosticSeverity::HINT, true) => theme.hint_diagnostic.clone(),
5968 (DiagnosticSeverity::HINT, false) => theme.invalid_hint_diagnostic.clone(),
5969 _ => theme.invalid_hint_diagnostic.clone(),
5970 }
5971}
5972
5973pub fn combine_syntax_and_fuzzy_match_highlights(
5974 text: &str,
5975 default_style: HighlightStyle,
5976 syntax_ranges: impl Iterator<Item = (Range<usize>, HighlightStyle)>,
5977 match_indices: &[usize],
5978) -> Vec<(Range<usize>, HighlightStyle)> {
5979 let mut result = Vec::new();
5980 let mut match_indices = match_indices.iter().copied().peekable();
5981
5982 for (range, mut syntax_highlight) in syntax_ranges.chain([(usize::MAX..0, Default::default())])
5983 {
5984 syntax_highlight.weight = None;
5985
5986 // Add highlights for any fuzzy match characters before the next
5987 // syntax highlight range.
5988 while let Some(&match_index) = match_indices.peek() {
5989 if match_index >= range.start {
5990 break;
5991 }
5992 match_indices.next();
5993 let end_index = char_ix_after(match_index, text);
5994 let mut match_style = default_style;
5995 match_style.weight = Some(fonts::Weight::BOLD);
5996 result.push((match_index..end_index, match_style));
5997 }
5998
5999 if range.start == usize::MAX {
6000 break;
6001 }
6002
6003 // Add highlights for any fuzzy match characters within the
6004 // syntax highlight range.
6005 let mut offset = range.start;
6006 while let Some(&match_index) = match_indices.peek() {
6007 if match_index >= range.end {
6008 break;
6009 }
6010
6011 match_indices.next();
6012 if match_index > offset {
6013 result.push((offset..match_index, syntax_highlight));
6014 }
6015
6016 let mut end_index = char_ix_after(match_index, text);
6017 while let Some(&next_match_index) = match_indices.peek() {
6018 if next_match_index == end_index && next_match_index < range.end {
6019 end_index = char_ix_after(next_match_index, text);
6020 match_indices.next();
6021 } else {
6022 break;
6023 }
6024 }
6025
6026 let mut match_style = syntax_highlight;
6027 match_style.weight = Some(fonts::Weight::BOLD);
6028 result.push((match_index..end_index, match_style));
6029 offset = end_index;
6030 }
6031
6032 if offset < range.end {
6033 result.push((offset..range.end, syntax_highlight));
6034 }
6035 }
6036
6037 fn char_ix_after(ix: usize, text: &str) -> usize {
6038 ix + text[ix..].chars().next().unwrap().len_utf8()
6039 }
6040
6041 result
6042}
6043
6044pub fn styled_runs_for_code_label<'a>(
6045 label: &'a CodeLabel,
6046 syntax_theme: &'a theme::SyntaxTheme,
6047) -> impl 'a + Iterator<Item = (Range<usize>, HighlightStyle)> {
6048 let fade_out = HighlightStyle {
6049 fade_out: Some(0.35),
6050 ..Default::default()
6051 };
6052
6053 let mut prev_end = label.filter_range.end;
6054 label
6055 .runs
6056 .iter()
6057 .enumerate()
6058 .flat_map(move |(ix, (range, highlight_id))| {
6059 let style = if let Some(style) = highlight_id.style(syntax_theme) {
6060 style
6061 } else {
6062 return Default::default();
6063 };
6064 let mut muted_style = style.clone();
6065 muted_style.highlight(fade_out);
6066
6067 let mut runs = SmallVec::<[(Range<usize>, HighlightStyle); 3]>::new();
6068 if range.start >= label.filter_range.end {
6069 if range.start > prev_end {
6070 runs.push((prev_end..range.start, fade_out));
6071 }
6072 runs.push((range.clone(), muted_style));
6073 } else if range.end <= label.filter_range.end {
6074 runs.push((range.clone(), style));
6075 } else {
6076 runs.push((range.start..label.filter_range.end, style));
6077 runs.push((label.filter_range.end..range.end, muted_style));
6078 }
6079 prev_end = cmp::max(prev_end, range.end);
6080
6081 if ix + 1 == label.runs.len() && label.text.len() > prev_end {
6082 runs.push((prev_end..label.text.len(), fade_out));
6083 }
6084
6085 runs
6086 })
6087}
6088
6089#[cfg(test)]
6090mod tests {
6091 use super::*;
6092 use language::{LanguageConfig, LanguageServerConfig};
6093 use lsp::FakeLanguageServer;
6094 use project::FakeFs;
6095 use smol::stream::StreamExt;
6096 use std::{cell::RefCell, rc::Rc, time::Instant};
6097 use text::Point;
6098 use unindent::Unindent;
6099 use util::test::sample_text;
6100
6101 #[gpui::test]
6102 fn test_undo_redo_with_selection_restoration(cx: &mut MutableAppContext) {
6103 populate_settings(cx);
6104 let mut now = Instant::now();
6105 let buffer = cx.add_model(|cx| language::Buffer::new(0, "123456", cx));
6106 let group_interval = buffer.read(cx).transaction_group_interval();
6107 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
6108 let (_, editor) = cx.add_window(Default::default(), |cx| build_editor(buffer.clone(), cx));
6109
6110 editor.update(cx, |editor, cx| {
6111 editor.start_transaction_at(now, cx);
6112 editor.select_ranges([2..4], None, cx);
6113 editor.insert("cd", cx);
6114 editor.end_transaction_at(now, cx);
6115 assert_eq!(editor.text(cx), "12cd56");
6116 assert_eq!(editor.selected_ranges(cx), vec![4..4]);
6117
6118 editor.start_transaction_at(now, cx);
6119 editor.select_ranges([4..5], None, cx);
6120 editor.insert("e", cx);
6121 editor.end_transaction_at(now, cx);
6122 assert_eq!(editor.text(cx), "12cde6");
6123 assert_eq!(editor.selected_ranges(cx), vec![5..5]);
6124
6125 now += group_interval + Duration::from_millis(1);
6126 editor.select_ranges([2..2], None, cx);
6127
6128 // Simulate an edit in another editor
6129 buffer.update(cx, |buffer, cx| {
6130 buffer.start_transaction_at(now, cx);
6131 buffer.edit([0..1], "a", cx);
6132 buffer.edit([1..1], "b", cx);
6133 buffer.end_transaction_at(now, cx);
6134 });
6135
6136 assert_eq!(editor.text(cx), "ab2cde6");
6137 assert_eq!(editor.selected_ranges(cx), vec![3..3]);
6138
6139 // Last transaction happened past the group interval in a different editor.
6140 // Undo it individually and don't restore selections.
6141 editor.undo(&Undo, cx);
6142 assert_eq!(editor.text(cx), "12cde6");
6143 assert_eq!(editor.selected_ranges(cx), vec![2..2]);
6144
6145 // First two transactions happened within the group interval in this editor.
6146 // Undo them together and restore selections.
6147 editor.undo(&Undo, cx);
6148 editor.undo(&Undo, cx); // Undo stack is empty here, so this is a no-op.
6149 assert_eq!(editor.text(cx), "123456");
6150 assert_eq!(editor.selected_ranges(cx), vec![0..0]);
6151
6152 // Redo the first two transactions together.
6153 editor.redo(&Redo, cx);
6154 assert_eq!(editor.text(cx), "12cde6");
6155 assert_eq!(editor.selected_ranges(cx), vec![5..5]);
6156
6157 // Redo the last transaction on its own.
6158 editor.redo(&Redo, cx);
6159 assert_eq!(editor.text(cx), "ab2cde6");
6160 assert_eq!(editor.selected_ranges(cx), vec![6..6]);
6161
6162 // Test empty transactions.
6163 editor.start_transaction_at(now, cx);
6164 editor.end_transaction_at(now, cx);
6165 editor.undo(&Undo, cx);
6166 assert_eq!(editor.text(cx), "12cde6");
6167 });
6168 }
6169
6170 #[gpui::test]
6171 fn test_selection_with_mouse(cx: &mut gpui::MutableAppContext) {
6172 populate_settings(cx);
6173 let buffer = MultiBuffer::build_simple("aaaaaa\nbbbbbb\ncccccc\ndddddd\n", cx);
6174 let (_, editor) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
6175
6176 editor.update(cx, |view, cx| {
6177 view.begin_selection(DisplayPoint::new(2, 2), false, 1, cx);
6178 });
6179
6180 assert_eq!(
6181 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
6182 [DisplayPoint::new(2, 2)..DisplayPoint::new(2, 2)]
6183 );
6184
6185 editor.update(cx, |view, cx| {
6186 view.update_selection(DisplayPoint::new(3, 3), 0, Vector2F::zero(), cx);
6187 });
6188
6189 assert_eq!(
6190 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
6191 [DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3)]
6192 );
6193
6194 editor.update(cx, |view, cx| {
6195 view.update_selection(DisplayPoint::new(1, 1), 0, Vector2F::zero(), cx);
6196 });
6197
6198 assert_eq!(
6199 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
6200 [DisplayPoint::new(2, 2)..DisplayPoint::new(1, 1)]
6201 );
6202
6203 editor.update(cx, |view, cx| {
6204 view.end_selection(cx);
6205 view.update_selection(DisplayPoint::new(3, 3), 0, Vector2F::zero(), cx);
6206 });
6207
6208 assert_eq!(
6209 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
6210 [DisplayPoint::new(2, 2)..DisplayPoint::new(1, 1)]
6211 );
6212
6213 editor.update(cx, |view, cx| {
6214 view.begin_selection(DisplayPoint::new(3, 3), true, 1, cx);
6215 view.update_selection(DisplayPoint::new(0, 0), 0, Vector2F::zero(), cx);
6216 });
6217
6218 assert_eq!(
6219 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
6220 [
6221 DisplayPoint::new(2, 2)..DisplayPoint::new(1, 1),
6222 DisplayPoint::new(3, 3)..DisplayPoint::new(0, 0)
6223 ]
6224 );
6225
6226 editor.update(cx, |view, cx| {
6227 view.end_selection(cx);
6228 });
6229
6230 assert_eq!(
6231 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
6232 [DisplayPoint::new(3, 3)..DisplayPoint::new(0, 0)]
6233 );
6234 }
6235
6236 #[gpui::test]
6237 fn test_canceling_pending_selection(cx: &mut gpui::MutableAppContext) {
6238 populate_settings(cx);
6239 let buffer = MultiBuffer::build_simple("aaaaaa\nbbbbbb\ncccccc\ndddddd\n", cx);
6240 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
6241
6242 view.update(cx, |view, cx| {
6243 view.begin_selection(DisplayPoint::new(2, 2), false, 1, cx);
6244 assert_eq!(
6245 view.selected_display_ranges(cx),
6246 [DisplayPoint::new(2, 2)..DisplayPoint::new(2, 2)]
6247 );
6248 });
6249
6250 view.update(cx, |view, cx| {
6251 view.update_selection(DisplayPoint::new(3, 3), 0, Vector2F::zero(), cx);
6252 assert_eq!(
6253 view.selected_display_ranges(cx),
6254 [DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3)]
6255 );
6256 });
6257
6258 view.update(cx, |view, cx| {
6259 view.cancel(&Cancel, cx);
6260 view.update_selection(DisplayPoint::new(1, 1), 0, Vector2F::zero(), cx);
6261 assert_eq!(
6262 view.selected_display_ranges(cx),
6263 [DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3)]
6264 );
6265 });
6266 }
6267
6268 #[gpui::test]
6269 fn test_navigation_history(cx: &mut gpui::MutableAppContext) {
6270 populate_settings(cx);
6271 use workspace::ItemView;
6272 let nav_history = Rc::new(RefCell::new(workspace::NavHistory::default()));
6273 let buffer = MultiBuffer::build_simple(&sample_text(30, 5, 'a'), cx);
6274
6275 cx.add_window(Default::default(), |cx| {
6276 let mut editor = build_editor(buffer.clone(), cx);
6277 editor.nav_history = Some(ItemNavHistory::new(nav_history.clone(), &cx.handle()));
6278
6279 // Move the cursor a small distance.
6280 // Nothing is added to the navigation history.
6281 editor.select_display_ranges(&[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)], cx);
6282 editor.select_display_ranges(&[DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0)], cx);
6283 assert!(nav_history.borrow_mut().pop_backward().is_none());
6284
6285 // Move the cursor a large distance.
6286 // The history can jump back to the previous position.
6287 editor.select_display_ranges(&[DisplayPoint::new(13, 0)..DisplayPoint::new(13, 3)], cx);
6288 let nav_entry = nav_history.borrow_mut().pop_backward().unwrap();
6289 editor.navigate(nav_entry.data.unwrap(), cx);
6290 assert_eq!(nav_entry.item_view.id(), cx.view_id());
6291 assert_eq!(
6292 editor.selected_display_ranges(cx),
6293 &[DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0)]
6294 );
6295
6296 // Move the cursor a small distance via the mouse.
6297 // Nothing is added to the navigation history.
6298 editor.begin_selection(DisplayPoint::new(5, 0), false, 1, cx);
6299 editor.end_selection(cx);
6300 assert_eq!(
6301 editor.selected_display_ranges(cx),
6302 &[DisplayPoint::new(5, 0)..DisplayPoint::new(5, 0)]
6303 );
6304 assert!(nav_history.borrow_mut().pop_backward().is_none());
6305
6306 // Move the cursor a large distance via the mouse.
6307 // The history can jump back to the previous position.
6308 editor.begin_selection(DisplayPoint::new(15, 0), false, 1, cx);
6309 editor.end_selection(cx);
6310 assert_eq!(
6311 editor.selected_display_ranges(cx),
6312 &[DisplayPoint::new(15, 0)..DisplayPoint::new(15, 0)]
6313 );
6314 let nav_entry = nav_history.borrow_mut().pop_backward().unwrap();
6315 editor.navigate(nav_entry.data.unwrap(), cx);
6316 assert_eq!(nav_entry.item_view.id(), cx.view_id());
6317 assert_eq!(
6318 editor.selected_display_ranges(cx),
6319 &[DisplayPoint::new(5, 0)..DisplayPoint::new(5, 0)]
6320 );
6321
6322 editor
6323 });
6324 }
6325
6326 #[gpui::test]
6327 fn test_cancel(cx: &mut gpui::MutableAppContext) {
6328 populate_settings(cx);
6329 let buffer = MultiBuffer::build_simple("aaaaaa\nbbbbbb\ncccccc\ndddddd\n", cx);
6330 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
6331
6332 view.update(cx, |view, cx| {
6333 view.begin_selection(DisplayPoint::new(3, 4), false, 1, cx);
6334 view.update_selection(DisplayPoint::new(1, 1), 0, Vector2F::zero(), cx);
6335 view.end_selection(cx);
6336
6337 view.begin_selection(DisplayPoint::new(0, 1), true, 1, cx);
6338 view.update_selection(DisplayPoint::new(0, 3), 0, Vector2F::zero(), cx);
6339 view.end_selection(cx);
6340 assert_eq!(
6341 view.selected_display_ranges(cx),
6342 [
6343 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
6344 DisplayPoint::new(3, 4)..DisplayPoint::new(1, 1),
6345 ]
6346 );
6347 });
6348
6349 view.update(cx, |view, cx| {
6350 view.cancel(&Cancel, cx);
6351 assert_eq!(
6352 view.selected_display_ranges(cx),
6353 [DisplayPoint::new(3, 4)..DisplayPoint::new(1, 1)]
6354 );
6355 });
6356
6357 view.update(cx, |view, cx| {
6358 view.cancel(&Cancel, cx);
6359 assert_eq!(
6360 view.selected_display_ranges(cx),
6361 [DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1)]
6362 );
6363 });
6364 }
6365
6366 #[gpui::test]
6367 fn test_fold(cx: &mut gpui::MutableAppContext) {
6368 populate_settings(cx);
6369 let buffer = MultiBuffer::build_simple(
6370 &"
6371 impl Foo {
6372 // Hello!
6373
6374 fn a() {
6375 1
6376 }
6377
6378 fn b() {
6379 2
6380 }
6381
6382 fn c() {
6383 3
6384 }
6385 }
6386 "
6387 .unindent(),
6388 cx,
6389 );
6390 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer.clone(), cx));
6391
6392 view.update(cx, |view, cx| {
6393 view.select_display_ranges(&[DisplayPoint::new(8, 0)..DisplayPoint::new(12, 0)], cx);
6394 view.fold(&Fold, cx);
6395 assert_eq!(
6396 view.display_text(cx),
6397 "
6398 impl Foo {
6399 // Hello!
6400
6401 fn a() {
6402 1
6403 }
6404
6405 fn b() {…
6406 }
6407
6408 fn c() {…
6409 }
6410 }
6411 "
6412 .unindent(),
6413 );
6414
6415 view.fold(&Fold, cx);
6416 assert_eq!(
6417 view.display_text(cx),
6418 "
6419 impl Foo {…
6420 }
6421 "
6422 .unindent(),
6423 );
6424
6425 view.unfold(&Unfold, cx);
6426 assert_eq!(
6427 view.display_text(cx),
6428 "
6429 impl Foo {
6430 // Hello!
6431
6432 fn a() {
6433 1
6434 }
6435
6436 fn b() {…
6437 }
6438
6439 fn c() {…
6440 }
6441 }
6442 "
6443 .unindent(),
6444 );
6445
6446 view.unfold(&Unfold, cx);
6447 assert_eq!(view.display_text(cx), buffer.read(cx).read(cx).text());
6448 });
6449 }
6450
6451 #[gpui::test]
6452 fn test_move_cursor(cx: &mut gpui::MutableAppContext) {
6453 populate_settings(cx);
6454 let buffer = MultiBuffer::build_simple(&sample_text(6, 6, 'a'), cx);
6455 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer.clone(), cx));
6456
6457 buffer.update(cx, |buffer, cx| {
6458 buffer.edit(
6459 vec![
6460 Point::new(1, 0)..Point::new(1, 0),
6461 Point::new(1, 1)..Point::new(1, 1),
6462 ],
6463 "\t",
6464 cx,
6465 );
6466 });
6467
6468 view.update(cx, |view, cx| {
6469 assert_eq!(
6470 view.selected_display_ranges(cx),
6471 &[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)]
6472 );
6473
6474 view.move_down(&MoveDown, cx);
6475 assert_eq!(
6476 view.selected_display_ranges(cx),
6477 &[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)]
6478 );
6479
6480 view.move_right(&MoveRight, cx);
6481 assert_eq!(
6482 view.selected_display_ranges(cx),
6483 &[DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4)]
6484 );
6485
6486 view.move_left(&MoveLeft, cx);
6487 assert_eq!(
6488 view.selected_display_ranges(cx),
6489 &[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)]
6490 );
6491
6492 view.move_up(&MoveUp, cx);
6493 assert_eq!(
6494 view.selected_display_ranges(cx),
6495 &[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)]
6496 );
6497
6498 view.move_to_end(&MoveToEnd, cx);
6499 assert_eq!(
6500 view.selected_display_ranges(cx),
6501 &[DisplayPoint::new(5, 6)..DisplayPoint::new(5, 6)]
6502 );
6503
6504 view.move_to_beginning(&MoveToBeginning, cx);
6505 assert_eq!(
6506 view.selected_display_ranges(cx),
6507 &[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)]
6508 );
6509
6510 view.select_display_ranges(&[DisplayPoint::new(0, 1)..DisplayPoint::new(0, 2)], cx);
6511 view.select_to_beginning(&SelectToBeginning, cx);
6512 assert_eq!(
6513 view.selected_display_ranges(cx),
6514 &[DisplayPoint::new(0, 1)..DisplayPoint::new(0, 0)]
6515 );
6516
6517 view.select_to_end(&SelectToEnd, cx);
6518 assert_eq!(
6519 view.selected_display_ranges(cx),
6520 &[DisplayPoint::new(0, 1)..DisplayPoint::new(5, 6)]
6521 );
6522 });
6523 }
6524
6525 #[gpui::test]
6526 fn test_move_cursor_multibyte(cx: &mut gpui::MutableAppContext) {
6527 populate_settings(cx);
6528 let buffer = MultiBuffer::build_simple("ⓐⓑⓒⓓⓔ\nabcde\nαβγδε\n", cx);
6529 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer.clone(), cx));
6530
6531 assert_eq!('ⓐ'.len_utf8(), 3);
6532 assert_eq!('α'.len_utf8(), 2);
6533
6534 view.update(cx, |view, cx| {
6535 view.fold_ranges(
6536 vec![
6537 Point::new(0, 6)..Point::new(0, 12),
6538 Point::new(1, 2)..Point::new(1, 4),
6539 Point::new(2, 4)..Point::new(2, 8),
6540 ],
6541 cx,
6542 );
6543 assert_eq!(view.display_text(cx), "ⓐⓑ…ⓔ\nab…e\nαβ…ε\n");
6544
6545 view.move_right(&MoveRight, cx);
6546 assert_eq!(
6547 view.selected_display_ranges(cx),
6548 &[empty_range(0, "ⓐ".len())]
6549 );
6550 view.move_right(&MoveRight, cx);
6551 assert_eq!(
6552 view.selected_display_ranges(cx),
6553 &[empty_range(0, "ⓐⓑ".len())]
6554 );
6555 view.move_right(&MoveRight, cx);
6556 assert_eq!(
6557 view.selected_display_ranges(cx),
6558 &[empty_range(0, "ⓐⓑ…".len())]
6559 );
6560
6561 view.move_down(&MoveDown, cx);
6562 assert_eq!(
6563 view.selected_display_ranges(cx),
6564 &[empty_range(1, "ab…".len())]
6565 );
6566 view.move_left(&MoveLeft, cx);
6567 assert_eq!(
6568 view.selected_display_ranges(cx),
6569 &[empty_range(1, "ab".len())]
6570 );
6571 view.move_left(&MoveLeft, cx);
6572 assert_eq!(
6573 view.selected_display_ranges(cx),
6574 &[empty_range(1, "a".len())]
6575 );
6576
6577 view.move_down(&MoveDown, cx);
6578 assert_eq!(
6579 view.selected_display_ranges(cx),
6580 &[empty_range(2, "α".len())]
6581 );
6582 view.move_right(&MoveRight, cx);
6583 assert_eq!(
6584 view.selected_display_ranges(cx),
6585 &[empty_range(2, "αβ".len())]
6586 );
6587 view.move_right(&MoveRight, cx);
6588 assert_eq!(
6589 view.selected_display_ranges(cx),
6590 &[empty_range(2, "αβ…".len())]
6591 );
6592 view.move_right(&MoveRight, cx);
6593 assert_eq!(
6594 view.selected_display_ranges(cx),
6595 &[empty_range(2, "αβ…ε".len())]
6596 );
6597
6598 view.move_up(&MoveUp, cx);
6599 assert_eq!(
6600 view.selected_display_ranges(cx),
6601 &[empty_range(1, "ab…e".len())]
6602 );
6603 view.move_up(&MoveUp, cx);
6604 assert_eq!(
6605 view.selected_display_ranges(cx),
6606 &[empty_range(0, "ⓐⓑ…ⓔ".len())]
6607 );
6608 view.move_left(&MoveLeft, cx);
6609 assert_eq!(
6610 view.selected_display_ranges(cx),
6611 &[empty_range(0, "ⓐⓑ…".len())]
6612 );
6613 view.move_left(&MoveLeft, cx);
6614 assert_eq!(
6615 view.selected_display_ranges(cx),
6616 &[empty_range(0, "ⓐⓑ".len())]
6617 );
6618 view.move_left(&MoveLeft, cx);
6619 assert_eq!(
6620 view.selected_display_ranges(cx),
6621 &[empty_range(0, "ⓐ".len())]
6622 );
6623 });
6624 }
6625
6626 #[gpui::test]
6627 fn test_move_cursor_different_line_lengths(cx: &mut gpui::MutableAppContext) {
6628 populate_settings(cx);
6629 let buffer = MultiBuffer::build_simple("ⓐⓑⓒⓓⓔ\nabcd\nαβγ\nabcd\nⓐⓑⓒⓓⓔ\n", cx);
6630 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer.clone(), cx));
6631 view.update(cx, |view, cx| {
6632 view.select_display_ranges(&[empty_range(0, "ⓐⓑⓒⓓⓔ".len())], cx);
6633 view.move_down(&MoveDown, cx);
6634 assert_eq!(
6635 view.selected_display_ranges(cx),
6636 &[empty_range(1, "abcd".len())]
6637 );
6638
6639 view.move_down(&MoveDown, cx);
6640 assert_eq!(
6641 view.selected_display_ranges(cx),
6642 &[empty_range(2, "αβγ".len())]
6643 );
6644
6645 view.move_down(&MoveDown, cx);
6646 assert_eq!(
6647 view.selected_display_ranges(cx),
6648 &[empty_range(3, "abcd".len())]
6649 );
6650
6651 view.move_down(&MoveDown, cx);
6652 assert_eq!(
6653 view.selected_display_ranges(cx),
6654 &[empty_range(4, "ⓐⓑⓒⓓⓔ".len())]
6655 );
6656
6657 view.move_up(&MoveUp, cx);
6658 assert_eq!(
6659 view.selected_display_ranges(cx),
6660 &[empty_range(3, "abcd".len())]
6661 );
6662
6663 view.move_up(&MoveUp, cx);
6664 assert_eq!(
6665 view.selected_display_ranges(cx),
6666 &[empty_range(2, "αβγ".len())]
6667 );
6668 });
6669 }
6670
6671 #[gpui::test]
6672 fn test_beginning_end_of_line(cx: &mut gpui::MutableAppContext) {
6673 populate_settings(cx);
6674 let buffer = MultiBuffer::build_simple("abc\n def", cx);
6675 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
6676 view.update(cx, |view, cx| {
6677 view.select_display_ranges(
6678 &[
6679 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
6680 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4),
6681 ],
6682 cx,
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_beginning_of_line(&MoveToBeginningOfLine, cx);
6699 assert_eq!(
6700 view.selected_display_ranges(cx),
6701 &[
6702 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
6703 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
6704 ]
6705 );
6706 });
6707
6708 view.update(cx, |view, cx| {
6709 view.move_to_beginning_of_line(&MoveToBeginningOfLine, cx);
6710 assert_eq!(
6711 view.selected_display_ranges(cx),
6712 &[
6713 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
6714 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
6715 ]
6716 );
6717 });
6718
6719 view.update(cx, |view, cx| {
6720 view.move_to_end_of_line(&MoveToEndOfLine, cx);
6721 assert_eq!(
6722 view.selected_display_ranges(cx),
6723 &[
6724 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
6725 DisplayPoint::new(1, 5)..DisplayPoint::new(1, 5),
6726 ]
6727 );
6728 });
6729
6730 // Moving to the end of line again is a no-op.
6731 view.update(cx, |view, cx| {
6732 view.move_to_end_of_line(&MoveToEndOfLine, cx);
6733 assert_eq!(
6734 view.selected_display_ranges(cx),
6735 &[
6736 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
6737 DisplayPoint::new(1, 5)..DisplayPoint::new(1, 5),
6738 ]
6739 );
6740 });
6741
6742 view.update(cx, |view, cx| {
6743 view.move_left(&MoveLeft, 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_beginning_of_line(&SelectToBeginningOfLine(true), cx);
6756 assert_eq!(
6757 view.selected_display_ranges(cx),
6758 &[
6759 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 0),
6760 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 0),
6761 ]
6762 );
6763 });
6764
6765 view.update(cx, |view, cx| {
6766 view.select_to_beginning_of_line(&SelectToBeginningOfLine(true), cx);
6767 assert_eq!(
6768 view.selected_display_ranges(cx),
6769 &[
6770 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 0),
6771 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 2),
6772 ]
6773 );
6774 });
6775
6776 view.update(cx, |view, cx| {
6777 view.select_to_end_of_line(&SelectToEndOfLine(true), cx);
6778 assert_eq!(
6779 view.selected_display_ranges(cx),
6780 &[
6781 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 3),
6782 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 5),
6783 ]
6784 );
6785 });
6786
6787 view.update(cx, |view, cx| {
6788 view.delete_to_end_of_line(&DeleteToEndOfLine, cx);
6789 assert_eq!(view.display_text(cx), "ab\n de");
6790 assert_eq!(
6791 view.selected_display_ranges(cx),
6792 &[
6793 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
6794 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4),
6795 ]
6796 );
6797 });
6798
6799 view.update(cx, |view, cx| {
6800 view.delete_to_beginning_of_line(&DeleteToBeginningOfLine, cx);
6801 assert_eq!(view.display_text(cx), "\n");
6802 assert_eq!(
6803 view.selected_display_ranges(cx),
6804 &[
6805 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
6806 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
6807 ]
6808 );
6809 });
6810 }
6811
6812 #[gpui::test]
6813 fn test_prev_next_word_boundary(cx: &mut gpui::MutableAppContext) {
6814 populate_settings(cx);
6815 let buffer = MultiBuffer::build_simple("use std::str::{foo, bar}\n\n {baz.qux()}", cx);
6816 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
6817 view.update(cx, |view, cx| {
6818 view.select_display_ranges(
6819 &[
6820 DisplayPoint::new(0, 11)..DisplayPoint::new(0, 11),
6821 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 4),
6822 ],
6823 cx,
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, 9)..DisplayPoint::new(0, 9),
6833 DisplayPoint::new(2, 3)..DisplayPoint::new(2, 3),
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, 7)..DisplayPoint::new(0, 7),
6844 DisplayPoint::new(2, 2)..DisplayPoint::new(2, 2),
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, 4)..DisplayPoint::new(0, 4),
6855 DisplayPoint::new(2, 0)..DisplayPoint::new(2, 0),
6856 ]
6857 );
6858 });
6859
6860 view.update(cx, |view, cx| {
6861 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
6862 assert_eq!(
6863 view.selected_display_ranges(cx),
6864 &[
6865 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
6866 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
6867 ]
6868 );
6869 });
6870
6871 view.update(cx, |view, cx| {
6872 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
6873 assert_eq!(
6874 view.selected_display_ranges(cx),
6875 &[
6876 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
6877 DisplayPoint::new(0, 23)..DisplayPoint::new(0, 23),
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, 3)..DisplayPoint::new(0, 3),
6888 DisplayPoint::new(0, 24)..DisplayPoint::new(0, 24),
6889 ]
6890 );
6891 });
6892
6893 view.update(cx, |view, cx| {
6894 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
6895 assert_eq!(
6896 view.selected_display_ranges(cx),
6897 &[
6898 DisplayPoint::new(0, 7)..DisplayPoint::new(0, 7),
6899 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
6900 ]
6901 );
6902 });
6903
6904 view.update(cx, |view, cx| {
6905 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
6906 assert_eq!(
6907 view.selected_display_ranges(cx),
6908 &[
6909 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 9),
6910 DisplayPoint::new(2, 3)..DisplayPoint::new(2, 3),
6911 ]
6912 );
6913 });
6914
6915 view.update(cx, |view, cx| {
6916 view.move_right(&MoveRight, cx);
6917 view.select_to_previous_word_boundary(&SelectToPreviousWordBoundary, 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 view.update(cx, |view, cx| {
6928 view.select_to_previous_word_boundary(&SelectToPreviousWordBoundary, cx);
6929 assert_eq!(
6930 view.selected_display_ranges(cx),
6931 &[
6932 DisplayPoint::new(0, 10)..DisplayPoint::new(0, 7),
6933 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 2),
6934 ]
6935 );
6936 });
6937
6938 view.update(cx, |view, cx| {
6939 view.select_to_next_word_boundary(&SelectToNextWordBoundary, cx);
6940 assert_eq!(
6941 view.selected_display_ranges(cx),
6942 &[
6943 DisplayPoint::new(0, 10)..DisplayPoint::new(0, 9),
6944 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 3),
6945 ]
6946 );
6947 });
6948 }
6949
6950 #[gpui::test]
6951 fn test_prev_next_word_bounds_with_soft_wrap(cx: &mut gpui::MutableAppContext) {
6952 populate_settings(cx);
6953 let buffer = MultiBuffer::build_simple("use one::{\n two::three::four::five\n};", cx);
6954 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
6955
6956 view.update(cx, |view, cx| {
6957 view.set_wrap_width(Some(140.), cx);
6958 assert_eq!(
6959 view.display_text(cx),
6960 "use one::{\n two::three::\n four::five\n};"
6961 );
6962
6963 view.select_display_ranges(&[DisplayPoint::new(1, 7)..DisplayPoint::new(1, 7)], cx);
6964
6965 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
6966 assert_eq!(
6967 view.selected_display_ranges(cx),
6968 &[DisplayPoint::new(1, 9)..DisplayPoint::new(1, 9)]
6969 );
6970
6971 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
6972 assert_eq!(
6973 view.selected_display_ranges(cx),
6974 &[DisplayPoint::new(1, 14)..DisplayPoint::new(1, 14)]
6975 );
6976
6977 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
6978 assert_eq!(
6979 view.selected_display_ranges(cx),
6980 &[DisplayPoint::new(2, 4)..DisplayPoint::new(2, 4)]
6981 );
6982
6983 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
6984 assert_eq!(
6985 view.selected_display_ranges(cx),
6986 &[DisplayPoint::new(2, 8)..DisplayPoint::new(2, 8)]
6987 );
6988
6989 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
6990 assert_eq!(
6991 view.selected_display_ranges(cx),
6992 &[DisplayPoint::new(2, 4)..DisplayPoint::new(2, 4)]
6993 );
6994
6995 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
6996 assert_eq!(
6997 view.selected_display_ranges(cx),
6998 &[DisplayPoint::new(1, 14)..DisplayPoint::new(1, 14)]
6999 );
7000 });
7001 }
7002
7003 #[gpui::test]
7004 fn test_delete_to_word_boundary(cx: &mut gpui::MutableAppContext) {
7005 populate_settings(cx);
7006 let buffer = MultiBuffer::build_simple("one two three four", cx);
7007 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer.clone(), cx));
7008
7009 view.update(cx, |view, cx| {
7010 view.select_display_ranges(
7011 &[
7012 // an empty selection - the preceding word fragment is deleted
7013 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
7014 // characters selected - they are deleted
7015 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 12),
7016 ],
7017 cx,
7018 );
7019 view.delete_to_previous_word_boundary(&DeleteToPreviousWordBoundary, cx);
7020 });
7021
7022 assert_eq!(buffer.read(cx).read(cx).text(), "e two te four");
7023
7024 view.update(cx, |view, cx| {
7025 view.select_display_ranges(
7026 &[
7027 // an empty selection - the following word fragment is deleted
7028 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
7029 // characters selected - they are deleted
7030 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 10),
7031 ],
7032 cx,
7033 );
7034 view.delete_to_next_word_boundary(&DeleteToNextWordBoundary, cx);
7035 });
7036
7037 assert_eq!(buffer.read(cx).read(cx).text(), "e t te our");
7038 }
7039
7040 #[gpui::test]
7041 fn test_newline(cx: &mut gpui::MutableAppContext) {
7042 populate_settings(cx);
7043 let buffer = MultiBuffer::build_simple("aaaa\n bbbb\n", cx);
7044 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer.clone(), cx));
7045
7046 view.update(cx, |view, cx| {
7047 view.select_display_ranges(
7048 &[
7049 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
7050 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
7051 DisplayPoint::new(1, 6)..DisplayPoint::new(1, 6),
7052 ],
7053 cx,
7054 );
7055
7056 view.newline(&Newline, cx);
7057 assert_eq!(view.text(cx), "aa\naa\n \n bb\n bb\n");
7058 });
7059 }
7060
7061 #[gpui::test]
7062 fn test_newline_with_old_selections(cx: &mut gpui::MutableAppContext) {
7063 populate_settings(cx);
7064 let buffer = MultiBuffer::build_simple(
7065 "
7066 a
7067 b(
7068 X
7069 )
7070 c(
7071 X
7072 )
7073 "
7074 .unindent()
7075 .as_str(),
7076 cx,
7077 );
7078
7079 let (_, editor) = cx.add_window(Default::default(), |cx| {
7080 let mut editor = build_editor(buffer.clone(), cx);
7081 editor.select_ranges(
7082 [
7083 Point::new(2, 4)..Point::new(2, 5),
7084 Point::new(5, 4)..Point::new(5, 5),
7085 ],
7086 None,
7087 cx,
7088 );
7089 editor
7090 });
7091
7092 // Edit the buffer directly, deleting ranges surrounding the editor's selections
7093 buffer.update(cx, |buffer, cx| {
7094 buffer.edit(
7095 [
7096 Point::new(1, 2)..Point::new(3, 0),
7097 Point::new(4, 2)..Point::new(6, 0),
7098 ],
7099 "",
7100 cx,
7101 );
7102 assert_eq!(
7103 buffer.read(cx).text(),
7104 "
7105 a
7106 b()
7107 c()
7108 "
7109 .unindent()
7110 );
7111 });
7112
7113 editor.update(cx, |editor, cx| {
7114 assert_eq!(
7115 editor.selected_ranges(cx),
7116 &[
7117 Point::new(1, 2)..Point::new(1, 2),
7118 Point::new(2, 2)..Point::new(2, 2),
7119 ],
7120 );
7121
7122 editor.newline(&Newline, cx);
7123 assert_eq!(
7124 editor.text(cx),
7125 "
7126 a
7127 b(
7128 )
7129 c(
7130 )
7131 "
7132 .unindent()
7133 );
7134
7135 // The selections are moved after the inserted newlines
7136 assert_eq!(
7137 editor.selected_ranges(cx),
7138 &[
7139 Point::new(2, 0)..Point::new(2, 0),
7140 Point::new(4, 0)..Point::new(4, 0),
7141 ],
7142 );
7143 });
7144 }
7145
7146 #[gpui::test]
7147 fn test_insert_with_old_selections(cx: &mut gpui::MutableAppContext) {
7148 populate_settings(cx);
7149 let buffer = MultiBuffer::build_simple("a( X ), b( Y ), c( Z )", cx);
7150 let (_, editor) = cx.add_window(Default::default(), |cx| {
7151 let mut editor = build_editor(buffer.clone(), cx);
7152 editor.select_ranges([3..4, 11..12, 19..20], None, cx);
7153 editor
7154 });
7155
7156 // Edit the buffer directly, deleting ranges surrounding the editor's selections
7157 buffer.update(cx, |buffer, cx| {
7158 buffer.edit([2..5, 10..13, 18..21], "", cx);
7159 assert_eq!(buffer.read(cx).text(), "a(), b(), c()".unindent());
7160 });
7161
7162 editor.update(cx, |editor, cx| {
7163 assert_eq!(editor.selected_ranges(cx), &[2..2, 7..7, 12..12],);
7164
7165 editor.insert("Z", cx);
7166 assert_eq!(editor.text(cx), "a(Z), b(Z), c(Z)");
7167
7168 // The selections are moved after the inserted characters
7169 assert_eq!(editor.selected_ranges(cx), &[3..3, 9..9, 15..15],);
7170 });
7171 }
7172
7173 #[gpui::test]
7174 fn test_indent_outdent(cx: &mut gpui::MutableAppContext) {
7175 populate_settings(cx);
7176 let buffer = MultiBuffer::build_simple(" one two\nthree\n four", cx);
7177 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer.clone(), cx));
7178
7179 view.update(cx, |view, cx| {
7180 // two selections on the same line
7181 view.select_display_ranges(
7182 &[
7183 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 5),
7184 DisplayPoint::new(0, 6)..DisplayPoint::new(0, 9),
7185 ],
7186 cx,
7187 );
7188
7189 // indent from mid-tabstop to full tabstop
7190 view.tab(&Tab, cx);
7191 assert_eq!(view.text(cx), " one two\nthree\n four");
7192 assert_eq!(
7193 view.selected_display_ranges(cx),
7194 &[
7195 DisplayPoint::new(0, 4)..DisplayPoint::new(0, 7),
7196 DisplayPoint::new(0, 8)..DisplayPoint::new(0, 11),
7197 ]
7198 );
7199
7200 // outdent from 1 tabstop to 0 tabstops
7201 view.outdent(&Outdent, cx);
7202 assert_eq!(view.text(cx), "one two\nthree\n four");
7203 assert_eq!(
7204 view.selected_display_ranges(cx),
7205 &[
7206 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 3),
7207 DisplayPoint::new(0, 4)..DisplayPoint::new(0, 7),
7208 ]
7209 );
7210
7211 // select across line ending
7212 view.select_display_ranges(&[DisplayPoint::new(1, 1)..DisplayPoint::new(2, 0)], cx);
7213
7214 // indent and outdent affect only the preceding line
7215 view.tab(&Tab, cx);
7216 assert_eq!(view.text(cx), "one two\n three\n four");
7217 assert_eq!(
7218 view.selected_display_ranges(cx),
7219 &[DisplayPoint::new(1, 5)..DisplayPoint::new(2, 0)]
7220 );
7221 view.outdent(&Outdent, cx);
7222 assert_eq!(view.text(cx), "one two\nthree\n four");
7223 assert_eq!(
7224 view.selected_display_ranges(cx),
7225 &[DisplayPoint::new(1, 1)..DisplayPoint::new(2, 0)]
7226 );
7227
7228 // Ensure that indenting/outdenting works when the cursor is at column 0.
7229 view.select_display_ranges(&[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)], cx);
7230 view.tab(&Tab, cx);
7231 assert_eq!(view.text(cx), "one two\n three\n four");
7232 assert_eq!(
7233 view.selected_display_ranges(cx),
7234 &[DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4)]
7235 );
7236
7237 view.select_display_ranges(&[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)], cx);
7238 view.outdent(&Outdent, cx);
7239 assert_eq!(view.text(cx), "one two\nthree\n four");
7240 assert_eq!(
7241 view.selected_display_ranges(cx),
7242 &[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)]
7243 );
7244 });
7245 }
7246
7247 #[gpui::test]
7248 fn test_backspace(cx: &mut gpui::MutableAppContext) {
7249 populate_settings(cx);
7250 let (_, view) = cx.add_window(Default::default(), |cx| {
7251 build_editor(MultiBuffer::build_simple("", cx), cx)
7252 });
7253
7254 view.update(cx, |view, cx| {
7255 view.set_text("one two three\nfour five six\nseven eight nine\nten\n", cx);
7256 view.select_display_ranges(
7257 &[
7258 // an empty selection - the preceding character is deleted
7259 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
7260 // one character selected - it is deleted
7261 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
7262 // a line suffix selected - it is deleted
7263 DisplayPoint::new(2, 6)..DisplayPoint::new(3, 0),
7264 ],
7265 cx,
7266 );
7267 view.backspace(&Backspace, cx);
7268 assert_eq!(view.text(cx), "oe two three\nfou five six\nseven ten\n");
7269
7270 view.set_text(" one\n two\n three\n four", cx);
7271 view.select_display_ranges(
7272 &[
7273 // cursors at the the end of leading indent - last indent is deleted
7274 DisplayPoint::new(0, 4)..DisplayPoint::new(0, 4),
7275 DisplayPoint::new(1, 8)..DisplayPoint::new(1, 8),
7276 // cursors inside leading indent - overlapping indent deletions are coalesced
7277 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 4),
7278 DisplayPoint::new(2, 5)..DisplayPoint::new(2, 5),
7279 DisplayPoint::new(2, 6)..DisplayPoint::new(2, 6),
7280 // cursor at the beginning of a line - preceding newline is deleted
7281 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
7282 // selection inside leading indent - only the selected character is deleted
7283 DisplayPoint::new(3, 2)..DisplayPoint::new(3, 3),
7284 ],
7285 cx,
7286 );
7287 view.backspace(&Backspace, cx);
7288 assert_eq!(view.text(cx), "one\n two\n three four");
7289 });
7290 }
7291
7292 #[gpui::test]
7293 fn test_delete(cx: &mut gpui::MutableAppContext) {
7294 populate_settings(cx);
7295 let buffer =
7296 MultiBuffer::build_simple("one two three\nfour five six\nseven eight nine\nten\n", cx);
7297 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer.clone(), cx));
7298
7299 view.update(cx, |view, cx| {
7300 view.select_display_ranges(
7301 &[
7302 // an empty selection - the following character is deleted
7303 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
7304 // one character selected - it is deleted
7305 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
7306 // a line suffix selected - it is deleted
7307 DisplayPoint::new(2, 6)..DisplayPoint::new(3, 0),
7308 ],
7309 cx,
7310 );
7311 view.delete(&Delete, cx);
7312 });
7313
7314 assert_eq!(
7315 buffer.read(cx).read(cx).text(),
7316 "on two three\nfou five six\nseven ten\n"
7317 );
7318 }
7319
7320 #[gpui::test]
7321 fn test_delete_line(cx: &mut gpui::MutableAppContext) {
7322 populate_settings(cx);
7323 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
7324 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
7325 view.update(cx, |view, cx| {
7326 view.select_display_ranges(
7327 &[
7328 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
7329 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 1),
7330 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
7331 ],
7332 cx,
7333 );
7334 view.delete_line(&DeleteLine, cx);
7335 assert_eq!(view.display_text(cx), "ghi");
7336 assert_eq!(
7337 view.selected_display_ranges(cx),
7338 vec![
7339 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
7340 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1)
7341 ]
7342 );
7343 });
7344
7345 populate_settings(cx);
7346 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
7347 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
7348 view.update(cx, |view, cx| {
7349 view.select_display_ranges(&[DisplayPoint::new(2, 0)..DisplayPoint::new(0, 1)], cx);
7350 view.delete_line(&DeleteLine, cx);
7351 assert_eq!(view.display_text(cx), "ghi\n");
7352 assert_eq!(
7353 view.selected_display_ranges(cx),
7354 vec![DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1)]
7355 );
7356 });
7357 }
7358
7359 #[gpui::test]
7360 fn test_duplicate_line(cx: &mut gpui::MutableAppContext) {
7361 populate_settings(cx);
7362 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
7363 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
7364 view.update(cx, |view, cx| {
7365 view.select_display_ranges(
7366 &[
7367 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
7368 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
7369 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
7370 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
7371 ],
7372 cx,
7373 );
7374 view.duplicate_line(&DuplicateLine, cx);
7375 assert_eq!(view.display_text(cx), "abc\nabc\ndef\ndef\nghi\n\n");
7376 assert_eq!(
7377 view.selected_display_ranges(cx),
7378 vec![
7379 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 1),
7380 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
7381 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
7382 DisplayPoint::new(6, 0)..DisplayPoint::new(6, 0),
7383 ]
7384 );
7385 });
7386
7387 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
7388 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
7389 view.update(cx, |view, cx| {
7390 view.select_display_ranges(
7391 &[
7392 DisplayPoint::new(0, 1)..DisplayPoint::new(1, 1),
7393 DisplayPoint::new(1, 2)..DisplayPoint::new(2, 1),
7394 ],
7395 cx,
7396 );
7397 view.duplicate_line(&DuplicateLine, cx);
7398 assert_eq!(view.display_text(cx), "abc\ndef\nghi\nabc\ndef\nghi\n");
7399 assert_eq!(
7400 view.selected_display_ranges(cx),
7401 vec![
7402 DisplayPoint::new(3, 1)..DisplayPoint::new(4, 1),
7403 DisplayPoint::new(4, 2)..DisplayPoint::new(5, 1),
7404 ]
7405 );
7406 });
7407 }
7408
7409 #[gpui::test]
7410 fn test_move_line_up_down(cx: &mut gpui::MutableAppContext) {
7411 populate_settings(cx);
7412 let buffer = MultiBuffer::build_simple(&sample_text(10, 5, 'a'), cx);
7413 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
7414 view.update(cx, |view, cx| {
7415 view.fold_ranges(
7416 vec![
7417 Point::new(0, 2)..Point::new(1, 2),
7418 Point::new(2, 3)..Point::new(4, 1),
7419 Point::new(7, 0)..Point::new(8, 4),
7420 ],
7421 cx,
7422 );
7423 view.select_display_ranges(
7424 &[
7425 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
7426 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 1),
7427 DisplayPoint::new(3, 2)..DisplayPoint::new(4, 3),
7428 DisplayPoint::new(5, 0)..DisplayPoint::new(5, 2),
7429 ],
7430 cx,
7431 );
7432 assert_eq!(
7433 view.display_text(cx),
7434 "aa…bbb\nccc…eeee\nfffff\nggggg\n…i\njjjjj"
7435 );
7436
7437 view.move_line_up(&MoveLineUp, cx);
7438 assert_eq!(
7439 view.display_text(cx),
7440 "aa…bbb\nccc…eeee\nggggg\n…i\njjjjj\nfffff"
7441 );
7442 assert_eq!(
7443 view.selected_display_ranges(cx),
7444 vec![
7445 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
7446 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
7447 DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3),
7448 DisplayPoint::new(4, 0)..DisplayPoint::new(4, 2)
7449 ]
7450 );
7451 });
7452
7453 view.update(cx, |view, cx| {
7454 view.move_line_down(&MoveLineDown, cx);
7455 assert_eq!(
7456 view.display_text(cx),
7457 "ccc…eeee\naa…bbb\nfffff\nggggg\n…i\njjjjj"
7458 );
7459 assert_eq!(
7460 view.selected_display_ranges(cx),
7461 vec![
7462 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
7463 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 1),
7464 DisplayPoint::new(3, 2)..DisplayPoint::new(4, 3),
7465 DisplayPoint::new(5, 0)..DisplayPoint::new(5, 2)
7466 ]
7467 );
7468 });
7469
7470 view.update(cx, |view, cx| {
7471 view.move_line_down(&MoveLineDown, cx);
7472 assert_eq!(
7473 view.display_text(cx),
7474 "ccc…eeee\nfffff\naa…bbb\nggggg\n…i\njjjjj"
7475 );
7476 assert_eq!(
7477 view.selected_display_ranges(cx),
7478 vec![
7479 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
7480 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 1),
7481 DisplayPoint::new(3, 2)..DisplayPoint::new(4, 3),
7482 DisplayPoint::new(5, 0)..DisplayPoint::new(5, 2)
7483 ]
7484 );
7485 });
7486
7487 view.update(cx, |view, cx| {
7488 view.move_line_up(&MoveLineUp, cx);
7489 assert_eq!(
7490 view.display_text(cx),
7491 "ccc…eeee\naa…bbb\nggggg\n…i\njjjjj\nfffff"
7492 );
7493 assert_eq!(
7494 view.selected_display_ranges(cx),
7495 vec![
7496 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
7497 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
7498 DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3),
7499 DisplayPoint::new(4, 0)..DisplayPoint::new(4, 2)
7500 ]
7501 );
7502 });
7503 }
7504
7505 #[gpui::test]
7506 fn test_move_line_up_down_with_blocks(cx: &mut gpui::MutableAppContext) {
7507 populate_settings(cx);
7508 let buffer = MultiBuffer::build_simple(&sample_text(10, 5, 'a'), cx);
7509 let snapshot = buffer.read(cx).snapshot(cx);
7510 let (_, editor) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
7511 editor.update(cx, |editor, cx| {
7512 editor.insert_blocks(
7513 [BlockProperties {
7514 position: snapshot.anchor_after(Point::new(2, 0)),
7515 disposition: BlockDisposition::Below,
7516 height: 1,
7517 render: Arc::new(|_| Empty::new().boxed()),
7518 }],
7519 cx,
7520 );
7521 editor.select_ranges([Point::new(2, 0)..Point::new(2, 0)], None, cx);
7522 editor.move_line_down(&MoveLineDown, cx);
7523 });
7524 }
7525
7526 #[gpui::test]
7527 fn test_clipboard(cx: &mut gpui::MutableAppContext) {
7528 populate_settings(cx);
7529 let buffer = MultiBuffer::build_simple("one✅ two three four five six ", cx);
7530 let view = cx
7531 .add_window(Default::default(), |cx| build_editor(buffer.clone(), cx))
7532 .1;
7533
7534 // Cut with three selections. Clipboard text is divided into three slices.
7535 view.update(cx, |view, cx| {
7536 view.select_ranges(vec![0..7, 11..17, 22..27], None, cx);
7537 view.cut(&Cut, cx);
7538 assert_eq!(view.display_text(cx), "two four six ");
7539 });
7540
7541 // Paste with three cursors. Each cursor pastes one slice of the clipboard text.
7542 view.update(cx, |view, cx| {
7543 view.select_ranges(vec![4..4, 9..9, 13..13], None, cx);
7544 view.paste(&Paste, cx);
7545 assert_eq!(view.display_text(cx), "two one✅ four three six five ");
7546 assert_eq!(
7547 view.selected_display_ranges(cx),
7548 &[
7549 DisplayPoint::new(0, 11)..DisplayPoint::new(0, 11),
7550 DisplayPoint::new(0, 22)..DisplayPoint::new(0, 22),
7551 DisplayPoint::new(0, 31)..DisplayPoint::new(0, 31)
7552 ]
7553 );
7554 });
7555
7556 // Paste again but with only two cursors. Since the number of cursors doesn't
7557 // match the number of slices in the clipboard, the entire clipboard text
7558 // is pasted at each cursor.
7559 view.update(cx, |view, cx| {
7560 view.select_ranges(vec![0..0, 31..31], None, cx);
7561 view.handle_input(&Input("( ".into()), cx);
7562 view.paste(&Paste, cx);
7563 view.handle_input(&Input(") ".into()), cx);
7564 assert_eq!(
7565 view.display_text(cx),
7566 "( one✅ three five ) two one✅ four three six five ( one✅ three five ) "
7567 );
7568 });
7569
7570 view.update(cx, |view, cx| {
7571 view.select_ranges(vec![0..0], None, cx);
7572 view.handle_input(&Input("123\n4567\n89\n".into()), cx);
7573 assert_eq!(
7574 view.display_text(cx),
7575 "123\n4567\n89\n( one✅ three five ) two one✅ four three six five ( one✅ three five ) "
7576 );
7577 });
7578
7579 // Cut with three selections, one of which is full-line.
7580 view.update(cx, |view, cx| {
7581 view.select_display_ranges(
7582 &[
7583 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 2),
7584 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
7585 DisplayPoint::new(2, 0)..DisplayPoint::new(2, 1),
7586 ],
7587 cx,
7588 );
7589 view.cut(&Cut, cx);
7590 assert_eq!(
7591 view.display_text(cx),
7592 "13\n9\n( one✅ three five ) two one✅ four three six five ( one✅ three five ) "
7593 );
7594 });
7595
7596 // Paste with three selections, noticing how the copied selection that was full-line
7597 // gets inserted before the second cursor.
7598 view.update(cx, |view, cx| {
7599 view.select_display_ranges(
7600 &[
7601 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
7602 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
7603 DisplayPoint::new(2, 2)..DisplayPoint::new(2, 3),
7604 ],
7605 cx,
7606 );
7607 view.paste(&Paste, cx);
7608 assert_eq!(
7609 view.display_text(cx),
7610 "123\n4567\n9\n( 8ne✅ three five ) two one✅ four three six five ( one✅ three five ) "
7611 );
7612 assert_eq!(
7613 view.selected_display_ranges(cx),
7614 &[
7615 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
7616 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
7617 DisplayPoint::new(3, 3)..DisplayPoint::new(3, 3),
7618 ]
7619 );
7620 });
7621
7622 // Copy with a single cursor only, which writes the whole line into the clipboard.
7623 view.update(cx, |view, cx| {
7624 view.select_display_ranges(&[DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1)], cx);
7625 view.copy(&Copy, cx);
7626 });
7627
7628 // Paste with three selections, noticing how the copied full-line selection is inserted
7629 // before the empty selections but replaces the selection that is non-empty.
7630 view.update(cx, |view, cx| {
7631 view.select_display_ranges(
7632 &[
7633 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
7634 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 2),
7635 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
7636 ],
7637 cx,
7638 );
7639 view.paste(&Paste, cx);
7640 assert_eq!(
7641 view.display_text(cx),
7642 "123\n123\n123\n67\n123\n9\n( 8ne✅ three five ) two one✅ four three six five ( one✅ three five ) "
7643 );
7644 assert_eq!(
7645 view.selected_display_ranges(cx),
7646 &[
7647 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
7648 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
7649 DisplayPoint::new(5, 1)..DisplayPoint::new(5, 1),
7650 ]
7651 );
7652 });
7653 }
7654
7655 #[gpui::test]
7656 fn test_select_all(cx: &mut gpui::MutableAppContext) {
7657 populate_settings(cx);
7658 let buffer = MultiBuffer::build_simple("abc\nde\nfgh", cx);
7659 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
7660 view.update(cx, |view, cx| {
7661 view.select_all(&SelectAll, cx);
7662 assert_eq!(
7663 view.selected_display_ranges(cx),
7664 &[DisplayPoint::new(0, 0)..DisplayPoint::new(2, 3)]
7665 );
7666 });
7667 }
7668
7669 #[gpui::test]
7670 fn test_select_line(cx: &mut gpui::MutableAppContext) {
7671 populate_settings(cx);
7672 let buffer = MultiBuffer::build_simple(&sample_text(6, 5, 'a'), cx);
7673 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
7674 view.update(cx, |view, cx| {
7675 view.select_display_ranges(
7676 &[
7677 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
7678 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
7679 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
7680 DisplayPoint::new(4, 2)..DisplayPoint::new(4, 2),
7681 ],
7682 cx,
7683 );
7684 view.select_line(&SelectLine, cx);
7685 assert_eq!(
7686 view.selected_display_ranges(cx),
7687 vec![
7688 DisplayPoint::new(0, 0)..DisplayPoint::new(2, 0),
7689 DisplayPoint::new(4, 0)..DisplayPoint::new(5, 0),
7690 ]
7691 );
7692 });
7693
7694 view.update(cx, |view, cx| {
7695 view.select_line(&SelectLine, cx);
7696 assert_eq!(
7697 view.selected_display_ranges(cx),
7698 vec![
7699 DisplayPoint::new(0, 0)..DisplayPoint::new(3, 0),
7700 DisplayPoint::new(4, 0)..DisplayPoint::new(5, 5),
7701 ]
7702 );
7703 });
7704
7705 view.update(cx, |view, cx| {
7706 view.select_line(&SelectLine, cx);
7707 assert_eq!(
7708 view.selected_display_ranges(cx),
7709 vec![DisplayPoint::new(0, 0)..DisplayPoint::new(5, 5)]
7710 );
7711 });
7712 }
7713
7714 #[gpui::test]
7715 fn test_split_selection_into_lines(cx: &mut gpui::MutableAppContext) {
7716 populate_settings(cx);
7717 let buffer = MultiBuffer::build_simple(&sample_text(9, 5, 'a'), cx);
7718 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
7719 view.update(cx, |view, cx| {
7720 view.fold_ranges(
7721 vec![
7722 Point::new(0, 2)..Point::new(1, 2),
7723 Point::new(2, 3)..Point::new(4, 1),
7724 Point::new(7, 0)..Point::new(8, 4),
7725 ],
7726 cx,
7727 );
7728 view.select_display_ranges(
7729 &[
7730 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
7731 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
7732 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
7733 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 4),
7734 ],
7735 cx,
7736 );
7737 assert_eq!(view.display_text(cx), "aa…bbb\nccc…eeee\nfffff\nggggg\n…i");
7738 });
7739
7740 view.update(cx, |view, cx| {
7741 view.split_selection_into_lines(&SplitSelectionIntoLines, cx);
7742 assert_eq!(
7743 view.display_text(cx),
7744 "aaaaa\nbbbbb\nccc…eeee\nfffff\nggggg\n…i"
7745 );
7746 assert_eq!(
7747 view.selected_display_ranges(cx),
7748 [
7749 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
7750 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
7751 DisplayPoint::new(2, 0)..DisplayPoint::new(2, 0),
7752 DisplayPoint::new(5, 4)..DisplayPoint::new(5, 4)
7753 ]
7754 );
7755 });
7756
7757 view.update(cx, |view, cx| {
7758 view.select_display_ranges(&[DisplayPoint::new(5, 0)..DisplayPoint::new(0, 1)], cx);
7759 view.split_selection_into_lines(&SplitSelectionIntoLines, cx);
7760 assert_eq!(
7761 view.display_text(cx),
7762 "aaaaa\nbbbbb\nccccc\nddddd\neeeee\nfffff\nggggg\nhhhhh\niiiii"
7763 );
7764 assert_eq!(
7765 view.selected_display_ranges(cx),
7766 [
7767 DisplayPoint::new(0, 5)..DisplayPoint::new(0, 5),
7768 DisplayPoint::new(1, 5)..DisplayPoint::new(1, 5),
7769 DisplayPoint::new(2, 5)..DisplayPoint::new(2, 5),
7770 DisplayPoint::new(3, 5)..DisplayPoint::new(3, 5),
7771 DisplayPoint::new(4, 5)..DisplayPoint::new(4, 5),
7772 DisplayPoint::new(5, 5)..DisplayPoint::new(5, 5),
7773 DisplayPoint::new(6, 5)..DisplayPoint::new(6, 5),
7774 DisplayPoint::new(7, 0)..DisplayPoint::new(7, 0)
7775 ]
7776 );
7777 });
7778 }
7779
7780 #[gpui::test]
7781 fn test_add_selection_above_below(cx: &mut gpui::MutableAppContext) {
7782 populate_settings(cx);
7783 let buffer = MultiBuffer::build_simple("abc\ndefghi\n\njk\nlmno\n", cx);
7784 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
7785
7786 view.update(cx, |view, cx| {
7787 view.select_display_ranges(&[DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)], cx);
7788 });
7789 view.update(cx, |view, cx| {
7790 view.add_selection_above(&AddSelectionAbove, cx);
7791 assert_eq!(
7792 view.selected_display_ranges(cx),
7793 vec![
7794 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
7795 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)
7796 ]
7797 );
7798 });
7799
7800 view.update(cx, |view, cx| {
7801 view.add_selection_above(&AddSelectionAbove, cx);
7802 assert_eq!(
7803 view.selected_display_ranges(cx),
7804 vec![
7805 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
7806 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)
7807 ]
7808 );
7809 });
7810
7811 view.update(cx, |view, cx| {
7812 view.add_selection_below(&AddSelectionBelow, cx);
7813 assert_eq!(
7814 view.selected_display_ranges(cx),
7815 vec![DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)]
7816 );
7817 });
7818
7819 view.update(cx, |view, cx| {
7820 view.add_selection_below(&AddSelectionBelow, cx);
7821 assert_eq!(
7822 view.selected_display_ranges(cx),
7823 vec![
7824 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3),
7825 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 3)
7826 ]
7827 );
7828 });
7829
7830 view.update(cx, |view, cx| {
7831 view.add_selection_below(&AddSelectionBelow, cx);
7832 assert_eq!(
7833 view.selected_display_ranges(cx),
7834 vec![
7835 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3),
7836 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 3)
7837 ]
7838 );
7839 });
7840
7841 view.update(cx, |view, cx| {
7842 view.select_display_ranges(&[DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3)], cx);
7843 });
7844 view.update(cx, |view, cx| {
7845 view.add_selection_below(&AddSelectionBelow, cx);
7846 assert_eq!(
7847 view.selected_display_ranges(cx),
7848 vec![
7849 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
7850 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 3)
7851 ]
7852 );
7853 });
7854
7855 view.update(cx, |view, cx| {
7856 view.add_selection_below(&AddSelectionBelow, cx);
7857 assert_eq!(
7858 view.selected_display_ranges(cx),
7859 vec![
7860 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
7861 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 3)
7862 ]
7863 );
7864 });
7865
7866 view.update(cx, |view, cx| {
7867 view.add_selection_above(&AddSelectionAbove, cx);
7868 assert_eq!(
7869 view.selected_display_ranges(cx),
7870 vec![DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3)]
7871 );
7872 });
7873
7874 view.update(cx, |view, cx| {
7875 view.add_selection_above(&AddSelectionAbove, cx);
7876 assert_eq!(
7877 view.selected_display_ranges(cx),
7878 vec![DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3)]
7879 );
7880 });
7881
7882 view.update(cx, |view, cx| {
7883 view.select_display_ranges(&[DisplayPoint::new(0, 1)..DisplayPoint::new(1, 4)], cx);
7884 view.add_selection_below(&AddSelectionBelow, cx);
7885 assert_eq!(
7886 view.selected_display_ranges(cx),
7887 vec![
7888 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
7889 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 4),
7890 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 2),
7891 ]
7892 );
7893 });
7894
7895 view.update(cx, |view, cx| {
7896 view.add_selection_below(&AddSelectionBelow, cx);
7897 assert_eq!(
7898 view.selected_display_ranges(cx),
7899 vec![
7900 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
7901 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 4),
7902 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 2),
7903 DisplayPoint::new(4, 1)..DisplayPoint::new(4, 4),
7904 ]
7905 );
7906 });
7907
7908 view.update(cx, |view, cx| {
7909 view.add_selection_above(&AddSelectionAbove, cx);
7910 assert_eq!(
7911 view.selected_display_ranges(cx),
7912 vec![
7913 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
7914 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 4),
7915 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 2),
7916 ]
7917 );
7918 });
7919
7920 view.update(cx, |view, cx| {
7921 view.select_display_ranges(&[DisplayPoint::new(4, 3)..DisplayPoint::new(1, 1)], cx);
7922 });
7923 view.update(cx, |view, cx| {
7924 view.add_selection_above(&AddSelectionAbove, cx);
7925 assert_eq!(
7926 view.selected_display_ranges(cx),
7927 vec![
7928 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 1),
7929 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 1),
7930 DisplayPoint::new(3, 2)..DisplayPoint::new(3, 1),
7931 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 1),
7932 ]
7933 );
7934 });
7935
7936 view.update(cx, |view, cx| {
7937 view.add_selection_below(&AddSelectionBelow, cx);
7938 assert_eq!(
7939 view.selected_display_ranges(cx),
7940 vec![
7941 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 1),
7942 DisplayPoint::new(3, 2)..DisplayPoint::new(3, 1),
7943 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 1),
7944 ]
7945 );
7946 });
7947 }
7948
7949 #[gpui::test]
7950 async fn test_select_larger_smaller_syntax_node(cx: &mut gpui::TestAppContext) {
7951 cx.update(populate_settings);
7952 let language = Arc::new(Language::new(
7953 LanguageConfig::default(),
7954 Some(tree_sitter_rust::language()),
7955 ));
7956
7957 let text = r#"
7958 use mod1::mod2::{mod3, mod4};
7959
7960 fn fn_1(param1: bool, param2: &str) {
7961 let var1 = "text";
7962 }
7963 "#
7964 .unindent();
7965
7966 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
7967 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
7968 let (_, view) = cx.add_window(|cx| build_editor(buffer, cx));
7969 view.condition(&cx, |view, cx| !view.buffer.read(cx).is_parsing(cx))
7970 .await;
7971
7972 view.update(cx, |view, cx| {
7973 view.select_display_ranges(
7974 &[
7975 DisplayPoint::new(0, 25)..DisplayPoint::new(0, 25),
7976 DisplayPoint::new(2, 24)..DisplayPoint::new(2, 12),
7977 DisplayPoint::new(3, 18)..DisplayPoint::new(3, 18),
7978 ],
7979 cx,
7980 );
7981 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
7982 });
7983 assert_eq!(
7984 view.update(cx, |view, cx| view.selected_display_ranges(cx)),
7985 &[
7986 DisplayPoint::new(0, 23)..DisplayPoint::new(0, 27),
7987 DisplayPoint::new(2, 35)..DisplayPoint::new(2, 7),
7988 DisplayPoint::new(3, 15)..DisplayPoint::new(3, 21),
7989 ]
7990 );
7991
7992 view.update(cx, |view, cx| {
7993 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
7994 });
7995 assert_eq!(
7996 view.update(cx, |view, cx| view.selected_display_ranges(cx)),
7997 &[
7998 DisplayPoint::new(0, 16)..DisplayPoint::new(0, 28),
7999 DisplayPoint::new(4, 1)..DisplayPoint::new(2, 0),
8000 ]
8001 );
8002
8003 view.update(cx, |view, cx| {
8004 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
8005 });
8006 assert_eq!(
8007 view.update(cx, |view, cx| view.selected_display_ranges(cx)),
8008 &[DisplayPoint::new(5, 0)..DisplayPoint::new(0, 0)]
8009 );
8010
8011 // Trying to expand the selected syntax node one more time has no effect.
8012 view.update(cx, |view, cx| {
8013 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
8014 });
8015 assert_eq!(
8016 view.update(cx, |view, cx| view.selected_display_ranges(cx)),
8017 &[DisplayPoint::new(5, 0)..DisplayPoint::new(0, 0)]
8018 );
8019
8020 view.update(cx, |view, cx| {
8021 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
8022 });
8023 assert_eq!(
8024 view.update(cx, |view, cx| view.selected_display_ranges(cx)),
8025 &[
8026 DisplayPoint::new(0, 16)..DisplayPoint::new(0, 28),
8027 DisplayPoint::new(4, 1)..DisplayPoint::new(2, 0),
8028 ]
8029 );
8030
8031 view.update(cx, |view, cx| {
8032 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
8033 });
8034 assert_eq!(
8035 view.update(cx, |view, cx| view.selected_display_ranges(cx)),
8036 &[
8037 DisplayPoint::new(0, 23)..DisplayPoint::new(0, 27),
8038 DisplayPoint::new(2, 35)..DisplayPoint::new(2, 7),
8039 DisplayPoint::new(3, 15)..DisplayPoint::new(3, 21),
8040 ]
8041 );
8042
8043 view.update(cx, |view, cx| {
8044 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
8045 });
8046 assert_eq!(
8047 view.update(cx, |view, cx| view.selected_display_ranges(cx)),
8048 &[
8049 DisplayPoint::new(0, 25)..DisplayPoint::new(0, 25),
8050 DisplayPoint::new(2, 24)..DisplayPoint::new(2, 12),
8051 DisplayPoint::new(3, 18)..DisplayPoint::new(3, 18),
8052 ]
8053 );
8054
8055 // Trying to shrink the selected syntax node one more time has no effect.
8056 view.update(cx, |view, cx| {
8057 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
8058 });
8059 assert_eq!(
8060 view.update(cx, |view, cx| view.selected_display_ranges(cx)),
8061 &[
8062 DisplayPoint::new(0, 25)..DisplayPoint::new(0, 25),
8063 DisplayPoint::new(2, 24)..DisplayPoint::new(2, 12),
8064 DisplayPoint::new(3, 18)..DisplayPoint::new(3, 18),
8065 ]
8066 );
8067
8068 // Ensure that we keep expanding the selection if the larger selection starts or ends within
8069 // a fold.
8070 view.update(cx, |view, cx| {
8071 view.fold_ranges(
8072 vec![
8073 Point::new(0, 21)..Point::new(0, 24),
8074 Point::new(3, 20)..Point::new(3, 22),
8075 ],
8076 cx,
8077 );
8078 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
8079 });
8080 assert_eq!(
8081 view.update(cx, |view, cx| view.selected_display_ranges(cx)),
8082 &[
8083 DisplayPoint::new(0, 16)..DisplayPoint::new(0, 28),
8084 DisplayPoint::new(2, 35)..DisplayPoint::new(2, 7),
8085 DisplayPoint::new(3, 4)..DisplayPoint::new(3, 23),
8086 ]
8087 );
8088 }
8089
8090 #[gpui::test]
8091 async fn test_autoindent_selections(cx: &mut gpui::TestAppContext) {
8092 cx.update(populate_settings);
8093 let language = Arc::new(
8094 Language::new(
8095 LanguageConfig {
8096 brackets: vec![
8097 BracketPair {
8098 start: "{".to_string(),
8099 end: "}".to_string(),
8100 close: false,
8101 newline: true,
8102 },
8103 BracketPair {
8104 start: "(".to_string(),
8105 end: ")".to_string(),
8106 close: false,
8107 newline: true,
8108 },
8109 ],
8110 ..Default::default()
8111 },
8112 Some(tree_sitter_rust::language()),
8113 )
8114 .with_indents_query(
8115 r#"
8116 (_ "(" ")" @end) @indent
8117 (_ "{" "}" @end) @indent
8118 "#,
8119 )
8120 .unwrap(),
8121 );
8122
8123 let text = "fn a() {}";
8124
8125 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
8126 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
8127 let (_, editor) = cx.add_window(|cx| build_editor(buffer, cx));
8128 editor
8129 .condition(&cx, |editor, cx| !editor.buffer.read(cx).is_parsing(cx))
8130 .await;
8131
8132 editor.update(cx, |editor, cx| {
8133 editor.select_ranges([5..5, 8..8, 9..9], None, cx);
8134 editor.newline(&Newline, cx);
8135 assert_eq!(editor.text(cx), "fn a(\n \n) {\n \n}\n");
8136 assert_eq!(
8137 editor.selected_ranges(cx),
8138 &[
8139 Point::new(1, 4)..Point::new(1, 4),
8140 Point::new(3, 4)..Point::new(3, 4),
8141 Point::new(5, 0)..Point::new(5, 0)
8142 ]
8143 );
8144 });
8145 }
8146
8147 #[gpui::test]
8148 async fn test_autoclose_pairs(cx: &mut gpui::TestAppContext) {
8149 cx.update(populate_settings);
8150 let language = Arc::new(Language::new(
8151 LanguageConfig {
8152 brackets: vec![
8153 BracketPair {
8154 start: "{".to_string(),
8155 end: "}".to_string(),
8156 close: true,
8157 newline: true,
8158 },
8159 BracketPair {
8160 start: "/*".to_string(),
8161 end: " */".to_string(),
8162 close: true,
8163 newline: true,
8164 },
8165 ],
8166 autoclose_before: "})]".to_string(),
8167 ..Default::default()
8168 },
8169 Some(tree_sitter_rust::language()),
8170 ));
8171
8172 let text = r#"
8173 a
8174
8175 /
8176
8177 "#
8178 .unindent();
8179
8180 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
8181 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
8182 let (_, view) = cx.add_window(|cx| build_editor(buffer, cx));
8183 view.condition(&cx, |view, cx| !view.buffer.read(cx).is_parsing(cx))
8184 .await;
8185
8186 view.update(cx, |view, cx| {
8187 view.select_display_ranges(
8188 &[
8189 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
8190 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
8191 ],
8192 cx,
8193 );
8194
8195 view.handle_input(&Input("{".to_string()), cx);
8196 view.handle_input(&Input("{".to_string()), cx);
8197 view.handle_input(&Input("{".to_string()), cx);
8198 assert_eq!(
8199 view.text(cx),
8200 "
8201 {{{}}}
8202 {{{}}}
8203 /
8204
8205 "
8206 .unindent()
8207 );
8208
8209 view.move_right(&MoveRight, cx);
8210 view.handle_input(&Input("}".to_string()), cx);
8211 view.handle_input(&Input("}".to_string()), cx);
8212 view.handle_input(&Input("}".to_string()), cx);
8213 assert_eq!(
8214 view.text(cx),
8215 "
8216 {{{}}}}
8217 {{{}}}}
8218 /
8219
8220 "
8221 .unindent()
8222 );
8223
8224 view.undo(&Undo, cx);
8225 view.handle_input(&Input("/".to_string()), cx);
8226 view.handle_input(&Input("*".to_string()), cx);
8227 assert_eq!(
8228 view.text(cx),
8229 "
8230 /* */
8231 /* */
8232 /
8233
8234 "
8235 .unindent()
8236 );
8237
8238 view.undo(&Undo, cx);
8239 view.select_display_ranges(
8240 &[
8241 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
8242 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
8243 ],
8244 cx,
8245 );
8246 view.handle_input(&Input("*".to_string()), cx);
8247 assert_eq!(
8248 view.text(cx),
8249 "
8250 a
8251
8252 /*
8253 *
8254 "
8255 .unindent()
8256 );
8257
8258 // Don't autoclose if the next character isn't whitespace and isn't
8259 // listed in the language's "autoclose_before" section.
8260 view.finalize_last_transaction(cx);
8261 view.select_display_ranges(&[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)], cx);
8262 view.handle_input(&Input("{".to_string()), cx);
8263 assert_eq!(
8264 view.text(cx),
8265 "
8266 {a
8267
8268 /*
8269 *
8270 "
8271 .unindent()
8272 );
8273
8274 view.undo(&Undo, cx);
8275 view.select_display_ranges(&[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1)], cx);
8276 view.handle_input(&Input("{".to_string()), cx);
8277 assert_eq!(
8278 view.text(cx),
8279 "
8280 {a}
8281
8282 /*
8283 *
8284 "
8285 .unindent()
8286 );
8287 assert_eq!(
8288 view.selected_display_ranges(cx),
8289 [DisplayPoint::new(0, 1)..DisplayPoint::new(0, 2)]
8290 );
8291 });
8292 }
8293
8294 #[gpui::test]
8295 async fn test_snippets(cx: &mut gpui::TestAppContext) {
8296 cx.update(populate_settings);
8297
8298 let text = "
8299 a. b
8300 a. b
8301 a. b
8302 "
8303 .unindent();
8304 let buffer = cx.update(|cx| MultiBuffer::build_simple(&text, cx));
8305 let (_, editor) = cx.add_window(|cx| build_editor(buffer, cx));
8306
8307 editor.update(cx, |editor, cx| {
8308 let buffer = &editor.snapshot(cx).buffer_snapshot;
8309 let snippet = Snippet::parse("f(${1:one}, ${2:two}, ${1:three})$0").unwrap();
8310 let insertion_ranges = [
8311 Point::new(0, 2).to_offset(buffer)..Point::new(0, 2).to_offset(buffer),
8312 Point::new(1, 2).to_offset(buffer)..Point::new(1, 2).to_offset(buffer),
8313 Point::new(2, 2).to_offset(buffer)..Point::new(2, 2).to_offset(buffer),
8314 ];
8315
8316 editor
8317 .insert_snippet(&insertion_ranges, snippet, cx)
8318 .unwrap();
8319 assert_eq!(
8320 editor.text(cx),
8321 "
8322 a.f(one, two, three) b
8323 a.f(one, two, three) b
8324 a.f(one, two, three) b
8325 "
8326 .unindent()
8327 );
8328 assert_eq!(
8329 editor.selected_ranges::<Point>(cx),
8330 &[
8331 Point::new(0, 4)..Point::new(0, 7),
8332 Point::new(0, 14)..Point::new(0, 19),
8333 Point::new(1, 4)..Point::new(1, 7),
8334 Point::new(1, 14)..Point::new(1, 19),
8335 Point::new(2, 4)..Point::new(2, 7),
8336 Point::new(2, 14)..Point::new(2, 19),
8337 ]
8338 );
8339
8340 // Can't move earlier than the first tab stop
8341 editor.move_to_prev_snippet_tabstop(cx);
8342 assert_eq!(
8343 editor.selected_ranges::<Point>(cx),
8344 &[
8345 Point::new(0, 4)..Point::new(0, 7),
8346 Point::new(0, 14)..Point::new(0, 19),
8347 Point::new(1, 4)..Point::new(1, 7),
8348 Point::new(1, 14)..Point::new(1, 19),
8349 Point::new(2, 4)..Point::new(2, 7),
8350 Point::new(2, 14)..Point::new(2, 19),
8351 ]
8352 );
8353
8354 assert!(editor.move_to_next_snippet_tabstop(cx));
8355 assert_eq!(
8356 editor.selected_ranges::<Point>(cx),
8357 &[
8358 Point::new(0, 9)..Point::new(0, 12),
8359 Point::new(1, 9)..Point::new(1, 12),
8360 Point::new(2, 9)..Point::new(2, 12)
8361 ]
8362 );
8363
8364 editor.move_to_prev_snippet_tabstop(cx);
8365 assert_eq!(
8366 editor.selected_ranges::<Point>(cx),
8367 &[
8368 Point::new(0, 4)..Point::new(0, 7),
8369 Point::new(0, 14)..Point::new(0, 19),
8370 Point::new(1, 4)..Point::new(1, 7),
8371 Point::new(1, 14)..Point::new(1, 19),
8372 Point::new(2, 4)..Point::new(2, 7),
8373 Point::new(2, 14)..Point::new(2, 19),
8374 ]
8375 );
8376
8377 assert!(editor.move_to_next_snippet_tabstop(cx));
8378 assert!(editor.move_to_next_snippet_tabstop(cx));
8379 assert_eq!(
8380 editor.selected_ranges::<Point>(cx),
8381 &[
8382 Point::new(0, 20)..Point::new(0, 20),
8383 Point::new(1, 20)..Point::new(1, 20),
8384 Point::new(2, 20)..Point::new(2, 20)
8385 ]
8386 );
8387
8388 // As soon as the last tab stop is reached, snippet state is gone
8389 editor.move_to_prev_snippet_tabstop(cx);
8390 assert_eq!(
8391 editor.selected_ranges::<Point>(cx),
8392 &[
8393 Point::new(0, 20)..Point::new(0, 20),
8394 Point::new(1, 20)..Point::new(1, 20),
8395 Point::new(2, 20)..Point::new(2, 20)
8396 ]
8397 );
8398 });
8399 }
8400
8401 #[gpui::test]
8402 async fn test_completion(cx: &mut gpui::TestAppContext) {
8403 cx.update(populate_settings);
8404
8405 let (mut language_server_config, mut fake_servers) = LanguageServerConfig::fake();
8406 language_server_config.set_fake_capabilities(lsp::ServerCapabilities {
8407 completion_provider: Some(lsp::CompletionOptions {
8408 trigger_characters: Some(vec![".".to_string(), ":".to_string()]),
8409 ..Default::default()
8410 }),
8411 ..Default::default()
8412 });
8413 let language = Arc::new(Language::new(
8414 LanguageConfig {
8415 name: "Rust".into(),
8416 path_suffixes: vec!["rs".to_string()],
8417 language_server: Some(language_server_config),
8418 ..Default::default()
8419 },
8420 Some(tree_sitter_rust::language()),
8421 ));
8422
8423 let text = "
8424 one
8425 two
8426 three
8427 "
8428 .unindent();
8429
8430 let fs = FakeFs::new(cx.background().clone());
8431 fs.insert_file("/file.rs", text).await;
8432
8433 let project = Project::test(fs, cx);
8434 project.update(cx, |project, _| project.languages().add(language));
8435
8436 let worktree_id = project
8437 .update(cx, |project, cx| {
8438 project.find_or_create_local_worktree("/file.rs", true, cx)
8439 })
8440 .await
8441 .unwrap()
8442 .0
8443 .read_with(cx, |tree, _| tree.id());
8444 let buffer = project
8445 .update(cx, |project, cx| project.open_buffer((worktree_id, ""), cx))
8446 .await
8447 .unwrap();
8448 let mut fake_server = fake_servers.next().await.unwrap();
8449
8450 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
8451 let (_, editor) = cx.add_window(|cx| build_editor(buffer, cx));
8452
8453 editor.update(cx, |editor, cx| {
8454 editor.project = Some(project);
8455 editor.select_ranges([Point::new(0, 3)..Point::new(0, 3)], None, cx);
8456 editor.handle_input(&Input(".".to_string()), cx);
8457 });
8458
8459 handle_completion_request(
8460 &mut fake_server,
8461 "/file.rs",
8462 Point::new(0, 4),
8463 vec![
8464 (Point::new(0, 4)..Point::new(0, 4), "first_completion"),
8465 (Point::new(0, 4)..Point::new(0, 4), "second_completion"),
8466 ],
8467 )
8468 .await;
8469 editor
8470 .condition(&cx, |editor, _| editor.context_menu_visible())
8471 .await;
8472
8473 let apply_additional_edits = editor.update(cx, |editor, cx| {
8474 editor.move_down(&MoveDown, cx);
8475 let apply_additional_edits = editor
8476 .confirm_completion(&ConfirmCompletion(None), cx)
8477 .unwrap();
8478 assert_eq!(
8479 editor.text(cx),
8480 "
8481 one.second_completion
8482 two
8483 three
8484 "
8485 .unindent()
8486 );
8487 apply_additional_edits
8488 });
8489
8490 handle_resolve_completion_request(
8491 &mut fake_server,
8492 Some((Point::new(2, 5)..Point::new(2, 5), "\nadditional edit")),
8493 )
8494 .await;
8495 apply_additional_edits.await.unwrap();
8496 assert_eq!(
8497 editor.read_with(cx, |editor, cx| editor.text(cx)),
8498 "
8499 one.second_completion
8500 two
8501 three
8502 additional edit
8503 "
8504 .unindent()
8505 );
8506
8507 editor.update(cx, |editor, cx| {
8508 editor.select_ranges(
8509 [
8510 Point::new(1, 3)..Point::new(1, 3),
8511 Point::new(2, 5)..Point::new(2, 5),
8512 ],
8513 None,
8514 cx,
8515 );
8516
8517 editor.handle_input(&Input(" ".to_string()), cx);
8518 assert!(editor.context_menu.is_none());
8519 editor.handle_input(&Input("s".to_string()), cx);
8520 assert!(editor.context_menu.is_none());
8521 });
8522
8523 handle_completion_request(
8524 &mut fake_server,
8525 "/file.rs",
8526 Point::new(2, 7),
8527 vec![
8528 (Point::new(2, 6)..Point::new(2, 7), "fourth_completion"),
8529 (Point::new(2, 6)..Point::new(2, 7), "fifth_completion"),
8530 (Point::new(2, 6)..Point::new(2, 7), "sixth_completion"),
8531 ],
8532 )
8533 .await;
8534 editor
8535 .condition(&cx, |editor, _| editor.context_menu_visible())
8536 .await;
8537
8538 editor.update(cx, |editor, cx| {
8539 editor.handle_input(&Input("i".to_string()), cx);
8540 });
8541
8542 handle_completion_request(
8543 &mut fake_server,
8544 "/file.rs",
8545 Point::new(2, 8),
8546 vec![
8547 (Point::new(2, 6)..Point::new(2, 8), "fourth_completion"),
8548 (Point::new(2, 6)..Point::new(2, 8), "fifth_completion"),
8549 (Point::new(2, 6)..Point::new(2, 8), "sixth_completion"),
8550 ],
8551 )
8552 .await;
8553 editor
8554 .condition(&cx, |editor, _| editor.context_menu_visible())
8555 .await;
8556
8557 let apply_additional_edits = editor.update(cx, |editor, cx| {
8558 let apply_additional_edits = editor
8559 .confirm_completion(&ConfirmCompletion(None), cx)
8560 .unwrap();
8561 assert_eq!(
8562 editor.text(cx),
8563 "
8564 one.second_completion
8565 two sixth_completion
8566 three sixth_completion
8567 additional edit
8568 "
8569 .unindent()
8570 );
8571 apply_additional_edits
8572 });
8573 handle_resolve_completion_request(&mut fake_server, None).await;
8574 apply_additional_edits.await.unwrap();
8575
8576 async fn handle_completion_request(
8577 fake: &mut FakeLanguageServer,
8578 path: &'static str,
8579 position: Point,
8580 completions: Vec<(Range<Point>, &'static str)>,
8581 ) {
8582 fake.handle_request::<lsp::request::Completion, _>(move |params, _| {
8583 assert_eq!(
8584 params.text_document_position.text_document.uri,
8585 lsp::Url::from_file_path(path).unwrap()
8586 );
8587 assert_eq!(
8588 params.text_document_position.position,
8589 lsp::Position::new(position.row, position.column)
8590 );
8591 Some(lsp::CompletionResponse::Array(
8592 completions
8593 .iter()
8594 .map(|(range, new_text)| lsp::CompletionItem {
8595 label: new_text.to_string(),
8596 text_edit: Some(lsp::CompletionTextEdit::Edit(lsp::TextEdit {
8597 range: lsp::Range::new(
8598 lsp::Position::new(range.start.row, range.start.column),
8599 lsp::Position::new(range.start.row, range.start.column),
8600 ),
8601 new_text: new_text.to_string(),
8602 })),
8603 ..Default::default()
8604 })
8605 .collect(),
8606 ))
8607 })
8608 .next()
8609 .await;
8610 }
8611
8612 async fn handle_resolve_completion_request(
8613 fake: &mut FakeLanguageServer,
8614 edit: Option<(Range<Point>, &'static str)>,
8615 ) {
8616 fake.handle_request::<lsp::request::ResolveCompletionItem, _>(move |_, _| {
8617 lsp::CompletionItem {
8618 additional_text_edits: edit.clone().map(|(range, new_text)| {
8619 vec![lsp::TextEdit::new(
8620 lsp::Range::new(
8621 lsp::Position::new(range.start.row, range.start.column),
8622 lsp::Position::new(range.end.row, range.end.column),
8623 ),
8624 new_text.to_string(),
8625 )]
8626 }),
8627 ..Default::default()
8628 }
8629 })
8630 .next()
8631 .await;
8632 }
8633 }
8634
8635 #[gpui::test]
8636 async fn test_toggle_comment(cx: &mut gpui::TestAppContext) {
8637 cx.update(populate_settings);
8638 let language = Arc::new(Language::new(
8639 LanguageConfig {
8640 line_comment: Some("// ".to_string()),
8641 ..Default::default()
8642 },
8643 Some(tree_sitter_rust::language()),
8644 ));
8645
8646 let text = "
8647 fn a() {
8648 //b();
8649 // c();
8650 // d();
8651 }
8652 "
8653 .unindent();
8654
8655 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
8656 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
8657 let (_, view) = cx.add_window(|cx| build_editor(buffer, cx));
8658
8659 view.update(cx, |editor, cx| {
8660 // If multiple selections intersect a line, the line is only
8661 // toggled once.
8662 editor.select_display_ranges(
8663 &[
8664 DisplayPoint::new(1, 3)..DisplayPoint::new(2, 3),
8665 DisplayPoint::new(3, 5)..DisplayPoint::new(3, 6),
8666 ],
8667 cx,
8668 );
8669 editor.toggle_comments(&ToggleComments, cx);
8670 assert_eq!(
8671 editor.text(cx),
8672 "
8673 fn a() {
8674 b();
8675 c();
8676 d();
8677 }
8678 "
8679 .unindent()
8680 );
8681
8682 // The comment prefix is inserted at the same column for every line
8683 // in a selection.
8684 editor.select_display_ranges(&[DisplayPoint::new(1, 3)..DisplayPoint::new(3, 6)], cx);
8685 editor.toggle_comments(&ToggleComments, cx);
8686 assert_eq!(
8687 editor.text(cx),
8688 "
8689 fn a() {
8690 // b();
8691 // c();
8692 // d();
8693 }
8694 "
8695 .unindent()
8696 );
8697
8698 // If a selection ends at the beginning of a line, that line is not toggled.
8699 editor.select_display_ranges(&[DisplayPoint::new(2, 0)..DisplayPoint::new(3, 0)], cx);
8700 editor.toggle_comments(&ToggleComments, cx);
8701 assert_eq!(
8702 editor.text(cx),
8703 "
8704 fn a() {
8705 // b();
8706 c();
8707 // d();
8708 }
8709 "
8710 .unindent()
8711 );
8712 });
8713 }
8714
8715 #[gpui::test]
8716 fn test_editing_disjoint_excerpts(cx: &mut gpui::MutableAppContext) {
8717 populate_settings(cx);
8718 let buffer = cx.add_model(|cx| Buffer::new(0, sample_text(3, 4, 'a'), cx));
8719 let multibuffer = cx.add_model(|cx| {
8720 let mut multibuffer = MultiBuffer::new(0);
8721 multibuffer.push_excerpts(
8722 buffer.clone(),
8723 [
8724 Point::new(0, 0)..Point::new(0, 4),
8725 Point::new(1, 0)..Point::new(1, 4),
8726 ],
8727 cx,
8728 );
8729 multibuffer
8730 });
8731
8732 assert_eq!(multibuffer.read(cx).read(cx).text(), "aaaa\nbbbb");
8733
8734 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(multibuffer, cx));
8735 view.update(cx, |view, cx| {
8736 assert_eq!(view.text(cx), "aaaa\nbbbb");
8737 view.select_ranges(
8738 [
8739 Point::new(0, 0)..Point::new(0, 0),
8740 Point::new(1, 0)..Point::new(1, 0),
8741 ],
8742 None,
8743 cx,
8744 );
8745
8746 view.handle_input(&Input("X".to_string()), cx);
8747 assert_eq!(view.text(cx), "Xaaaa\nXbbbb");
8748 assert_eq!(
8749 view.selected_ranges(cx),
8750 [
8751 Point::new(0, 1)..Point::new(0, 1),
8752 Point::new(1, 1)..Point::new(1, 1),
8753 ]
8754 )
8755 });
8756 }
8757
8758 #[gpui::test]
8759 fn test_editing_overlapping_excerpts(cx: &mut gpui::MutableAppContext) {
8760 populate_settings(cx);
8761 let buffer = cx.add_model(|cx| Buffer::new(0, sample_text(3, 4, 'a'), cx));
8762 let multibuffer = cx.add_model(|cx| {
8763 let mut multibuffer = MultiBuffer::new(0);
8764 multibuffer.push_excerpts(
8765 buffer,
8766 [
8767 Point::new(0, 0)..Point::new(1, 4),
8768 Point::new(1, 0)..Point::new(2, 4),
8769 ],
8770 cx,
8771 );
8772 multibuffer
8773 });
8774
8775 assert_eq!(
8776 multibuffer.read(cx).read(cx).text(),
8777 "aaaa\nbbbb\nbbbb\ncccc"
8778 );
8779
8780 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(multibuffer, cx));
8781 view.update(cx, |view, cx| {
8782 view.select_ranges(
8783 [
8784 Point::new(1, 1)..Point::new(1, 1),
8785 Point::new(2, 3)..Point::new(2, 3),
8786 ],
8787 None,
8788 cx,
8789 );
8790
8791 view.handle_input(&Input("X".to_string()), cx);
8792 assert_eq!(view.text(cx), "aaaa\nbXbbXb\nbXbbXb\ncccc");
8793 assert_eq!(
8794 view.selected_ranges(cx),
8795 [
8796 Point::new(1, 2)..Point::new(1, 2),
8797 Point::new(2, 5)..Point::new(2, 5),
8798 ]
8799 );
8800
8801 view.newline(&Newline, cx);
8802 assert_eq!(view.text(cx), "aaaa\nbX\nbbX\nb\nbX\nbbX\nb\ncccc");
8803 assert_eq!(
8804 view.selected_ranges(cx),
8805 [
8806 Point::new(2, 0)..Point::new(2, 0),
8807 Point::new(6, 0)..Point::new(6, 0),
8808 ]
8809 );
8810 });
8811 }
8812
8813 #[gpui::test]
8814 fn test_refresh_selections(cx: &mut gpui::MutableAppContext) {
8815 populate_settings(cx);
8816 let buffer = cx.add_model(|cx| Buffer::new(0, sample_text(3, 4, 'a'), cx));
8817 let mut excerpt1_id = None;
8818 let multibuffer = cx.add_model(|cx| {
8819 let mut multibuffer = MultiBuffer::new(0);
8820 excerpt1_id = multibuffer
8821 .push_excerpts(
8822 buffer.clone(),
8823 [
8824 Point::new(0, 0)..Point::new(1, 4),
8825 Point::new(1, 0)..Point::new(2, 4),
8826 ],
8827 cx,
8828 )
8829 .into_iter()
8830 .next();
8831 multibuffer
8832 });
8833 assert_eq!(
8834 multibuffer.read(cx).read(cx).text(),
8835 "aaaa\nbbbb\nbbbb\ncccc"
8836 );
8837 let (_, editor) = cx.add_window(Default::default(), |cx| {
8838 let mut editor = build_editor(multibuffer.clone(), cx);
8839 editor.select_ranges(
8840 [
8841 Point::new(1, 3)..Point::new(1, 3),
8842 Point::new(2, 1)..Point::new(2, 1),
8843 ],
8844 None,
8845 cx,
8846 );
8847 editor
8848 });
8849
8850 // Refreshing selections is a no-op when excerpts haven't changed.
8851 editor.update(cx, |editor, cx| {
8852 editor.refresh_selections(cx);
8853 assert_eq!(
8854 editor.selected_ranges(cx),
8855 [
8856 Point::new(1, 3)..Point::new(1, 3),
8857 Point::new(2, 1)..Point::new(2, 1),
8858 ]
8859 );
8860 });
8861
8862 multibuffer.update(cx, |multibuffer, cx| {
8863 multibuffer.remove_excerpts([&excerpt1_id.unwrap()], cx);
8864 });
8865 editor.update(cx, |editor, cx| {
8866 // Removing an excerpt causes the first selection to become degenerate.
8867 assert_eq!(
8868 editor.selected_ranges(cx),
8869 [
8870 Point::new(0, 0)..Point::new(0, 0),
8871 Point::new(0, 1)..Point::new(0, 1)
8872 ]
8873 );
8874
8875 // Refreshing selections will relocate the first selection to the original buffer
8876 // location.
8877 editor.refresh_selections(cx);
8878 assert_eq!(
8879 editor.selected_ranges(cx),
8880 [
8881 Point::new(0, 1)..Point::new(0, 1),
8882 Point::new(0, 3)..Point::new(0, 3)
8883 ]
8884 );
8885 });
8886 }
8887
8888 #[gpui::test]
8889 async fn test_extra_newline_insertion(cx: &mut gpui::TestAppContext) {
8890 cx.update(populate_settings);
8891 let language = Arc::new(Language::new(
8892 LanguageConfig {
8893 brackets: vec![
8894 BracketPair {
8895 start: "{".to_string(),
8896 end: "}".to_string(),
8897 close: true,
8898 newline: true,
8899 },
8900 BracketPair {
8901 start: "/* ".to_string(),
8902 end: " */".to_string(),
8903 close: true,
8904 newline: true,
8905 },
8906 ],
8907 ..Default::default()
8908 },
8909 Some(tree_sitter_rust::language()),
8910 ));
8911
8912 let text = concat!(
8913 "{ }\n", // Suppress rustfmt
8914 " x\n", //
8915 " /* */\n", //
8916 "x\n", //
8917 "{{} }\n", //
8918 );
8919
8920 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
8921 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
8922 let (_, view) = cx.add_window(|cx| build_editor(buffer, cx));
8923 view.condition(&cx, |view, cx| !view.buffer.read(cx).is_parsing(cx))
8924 .await;
8925
8926 view.update(cx, |view, cx| {
8927 view.select_display_ranges(
8928 &[
8929 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 3),
8930 DisplayPoint::new(2, 5)..DisplayPoint::new(2, 5),
8931 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 4),
8932 ],
8933 cx,
8934 );
8935 view.newline(&Newline, cx);
8936
8937 assert_eq!(
8938 view.buffer().read(cx).read(cx).text(),
8939 concat!(
8940 "{ \n", // Suppress rustfmt
8941 "\n", //
8942 "}\n", //
8943 " x\n", //
8944 " /* \n", //
8945 " \n", //
8946 " */\n", //
8947 "x\n", //
8948 "{{} \n", //
8949 "}\n", //
8950 )
8951 );
8952 });
8953 }
8954
8955 #[gpui::test]
8956 fn test_highlighted_ranges(cx: &mut gpui::MutableAppContext) {
8957 let buffer = MultiBuffer::build_simple(&sample_text(16, 8, 'a'), cx);
8958 populate_settings(cx);
8959 let (_, editor) = cx.add_window(Default::default(), |cx| build_editor(buffer.clone(), cx));
8960
8961 editor.update(cx, |editor, cx| {
8962 struct Type1;
8963 struct Type2;
8964
8965 let buffer = buffer.read(cx).snapshot(cx);
8966
8967 let anchor_range = |range: Range<Point>| {
8968 buffer.anchor_after(range.start)..buffer.anchor_after(range.end)
8969 };
8970
8971 editor.highlight_background::<Type1>(
8972 vec![
8973 anchor_range(Point::new(2, 1)..Point::new(2, 3)),
8974 anchor_range(Point::new(4, 2)..Point::new(4, 4)),
8975 anchor_range(Point::new(6, 3)..Point::new(6, 5)),
8976 anchor_range(Point::new(8, 4)..Point::new(8, 6)),
8977 ],
8978 Color::red(),
8979 cx,
8980 );
8981 editor.highlight_background::<Type2>(
8982 vec![
8983 anchor_range(Point::new(3, 2)..Point::new(3, 5)),
8984 anchor_range(Point::new(5, 3)..Point::new(5, 6)),
8985 anchor_range(Point::new(7, 4)..Point::new(7, 7)),
8986 anchor_range(Point::new(9, 5)..Point::new(9, 8)),
8987 ],
8988 Color::green(),
8989 cx,
8990 );
8991
8992 let snapshot = editor.snapshot(cx);
8993 let mut highlighted_ranges = editor.background_highlights_in_range(
8994 anchor_range(Point::new(3, 4)..Point::new(7, 4)),
8995 &snapshot,
8996 );
8997 // Enforce a consistent ordering based on color without relying on the ordering of the
8998 // highlight's `TypeId` which is non-deterministic.
8999 highlighted_ranges.sort_unstable_by_key(|(_, color)| *color);
9000 assert_eq!(
9001 highlighted_ranges,
9002 &[
9003 (
9004 DisplayPoint::new(3, 2)..DisplayPoint::new(3, 5),
9005 Color::green(),
9006 ),
9007 (
9008 DisplayPoint::new(5, 3)..DisplayPoint::new(5, 6),
9009 Color::green(),
9010 ),
9011 (
9012 DisplayPoint::new(4, 2)..DisplayPoint::new(4, 4),
9013 Color::red(),
9014 ),
9015 (
9016 DisplayPoint::new(6, 3)..DisplayPoint::new(6, 5),
9017 Color::red(),
9018 ),
9019 ]
9020 );
9021 assert_eq!(
9022 editor.background_highlights_in_range(
9023 anchor_range(Point::new(5, 6)..Point::new(6, 4)),
9024 &snapshot,
9025 ),
9026 &[(
9027 DisplayPoint::new(6, 3)..DisplayPoint::new(6, 5),
9028 Color::red(),
9029 )]
9030 );
9031 });
9032 }
9033
9034 #[test]
9035 fn test_combine_syntax_and_fuzzy_match_highlights() {
9036 let string = "abcdefghijklmnop";
9037 let syntax_ranges = [
9038 (
9039 0..3,
9040 HighlightStyle {
9041 color: Some(Color::red()),
9042 ..Default::default()
9043 },
9044 ),
9045 (
9046 4..8,
9047 HighlightStyle {
9048 color: Some(Color::green()),
9049 ..Default::default()
9050 },
9051 ),
9052 ];
9053 let match_indices = [4, 6, 7, 8];
9054 assert_eq!(
9055 combine_syntax_and_fuzzy_match_highlights(
9056 &string,
9057 Default::default(),
9058 syntax_ranges.into_iter(),
9059 &match_indices,
9060 ),
9061 &[
9062 (
9063 0..3,
9064 HighlightStyle {
9065 color: Some(Color::red()),
9066 ..Default::default()
9067 },
9068 ),
9069 (
9070 4..5,
9071 HighlightStyle {
9072 color: Some(Color::green()),
9073 weight: Some(fonts::Weight::BOLD),
9074 ..Default::default()
9075 },
9076 ),
9077 (
9078 5..6,
9079 HighlightStyle {
9080 color: Some(Color::green()),
9081 ..Default::default()
9082 },
9083 ),
9084 (
9085 6..8,
9086 HighlightStyle {
9087 color: Some(Color::green()),
9088 weight: Some(fonts::Weight::BOLD),
9089 ..Default::default()
9090 },
9091 ),
9092 (
9093 8..9,
9094 HighlightStyle {
9095 weight: Some(fonts::Weight::BOLD),
9096 ..Default::default()
9097 },
9098 ),
9099 ]
9100 );
9101 }
9102
9103 fn empty_range(row: usize, column: usize) -> Range<DisplayPoint> {
9104 let point = DisplayPoint::new(row as u32, column as u32);
9105 point..point
9106 }
9107
9108 fn build_editor(buffer: ModelHandle<MultiBuffer>, cx: &mut ViewContext<Editor>) -> Editor {
9109 Editor::new(EditorMode::Full, buffer, None, None, cx)
9110 }
9111
9112 fn populate_settings(cx: &mut gpui::MutableAppContext) {
9113 let settings = Settings::test(cx);
9114 cx.add_app_state(settings);
9115 }
9116}
9117
9118trait RangeExt<T> {
9119 fn sorted(&self) -> Range<T>;
9120 fn to_inclusive(&self) -> RangeInclusive<T>;
9121}
9122
9123impl<T: Ord + Clone> RangeExt<T> for Range<T> {
9124 fn sorted(&self) -> Self {
9125 cmp::min(&self.start, &self.end).clone()..cmp::max(&self.start, &self.end).clone()
9126 }
9127
9128 fn to_inclusive(&self) -> RangeInclusive<T> {
9129 self.start.clone()..=self.end.clone()
9130 }
9131}