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, 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!(MoveToPreviousWordStart);
92action!(MoveToNextWordEnd);
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) {
145 cx.add_bindings(vec![
146 Binding::new("escape", Cancel, Some("Editor")),
147 Binding::new("backspace", Backspace, Some("Editor")),
148 Binding::new("ctrl-h", Backspace, Some("Editor")),
149 Binding::new("delete", Delete, Some("Editor")),
150 Binding::new("ctrl-d", Delete, Some("Editor")),
151 Binding::new("enter", Newline, Some("Editor && mode == full")),
152 Binding::new(
153 "alt-enter",
154 Input("\n".into()),
155 Some("Editor && mode == auto_height"),
156 ),
157 Binding::new(
158 "enter",
159 ConfirmCompletion(None),
160 Some("Editor && showing_completions"),
161 ),
162 Binding::new(
163 "enter",
164 ConfirmCodeAction(None),
165 Some("Editor && showing_code_actions"),
166 ),
167 Binding::new("enter", ConfirmRename, Some("Editor && renaming")),
168 Binding::new("tab", Tab, Some("Editor")),
169 Binding::new(
170 "tab",
171 ConfirmCompletion(None),
172 Some("Editor && showing_completions"),
173 ),
174 Binding::new("shift-tab", Outdent, Some("Editor")),
175 Binding::new("ctrl-shift-K", DeleteLine, Some("Editor")),
176 Binding::new(
177 "alt-backspace",
178 DeleteToPreviousWordBoundary,
179 Some("Editor"),
180 ),
181 Binding::new("alt-h", DeleteToPreviousWordBoundary, Some("Editor")),
182 Binding::new("alt-delete", DeleteToNextWordBoundary, Some("Editor")),
183 Binding::new("alt-d", DeleteToNextWordBoundary, Some("Editor")),
184 Binding::new("cmd-backspace", DeleteToBeginningOfLine, Some("Editor")),
185 Binding::new("cmd-delete", DeleteToEndOfLine, Some("Editor")),
186 Binding::new("ctrl-k", CutToEndOfLine, Some("Editor")),
187 Binding::new("cmd-shift-D", DuplicateLine, Some("Editor")),
188 Binding::new("ctrl-cmd-up", MoveLineUp, Some("Editor")),
189 Binding::new("ctrl-cmd-down", MoveLineDown, Some("Editor")),
190 Binding::new("cmd-x", Cut, Some("Editor")),
191 Binding::new("cmd-c", Copy, Some("Editor")),
192 Binding::new("cmd-v", Paste, Some("Editor")),
193 Binding::new("cmd-z", Undo, Some("Editor")),
194 Binding::new("cmd-shift-Z", Redo, Some("Editor")),
195 Binding::new("up", MoveUp, Some("Editor")),
196 Binding::new("down", MoveDown, Some("Editor")),
197 Binding::new("left", MoveLeft, Some("Editor")),
198 Binding::new("right", MoveRight, Some("Editor")),
199 Binding::new("ctrl-p", MoveUp, Some("Editor")),
200 Binding::new("ctrl-n", MoveDown, Some("Editor")),
201 Binding::new("ctrl-b", MoveLeft, Some("Editor")),
202 Binding::new("ctrl-f", MoveRight, Some("Editor")),
203 Binding::new("alt-left", MoveToPreviousWordStart, Some("Editor")),
204 Binding::new("alt-b", MoveToPreviousWordStart, Some("Editor")),
205 Binding::new("alt-right", MoveToNextWordEnd, Some("Editor")),
206 Binding::new("alt-f", MoveToNextWordEnd, Some("Editor")),
207 Binding::new("cmd-left", MoveToBeginningOfLine, Some("Editor")),
208 Binding::new("ctrl-a", MoveToBeginningOfLine, Some("Editor")),
209 Binding::new("cmd-right", MoveToEndOfLine, Some("Editor")),
210 Binding::new("ctrl-e", MoveToEndOfLine, Some("Editor")),
211 Binding::new("cmd-up", MoveToBeginning, Some("Editor")),
212 Binding::new("cmd-down", MoveToEnd, Some("Editor")),
213 Binding::new("shift-up", SelectUp, Some("Editor")),
214 Binding::new("ctrl-shift-P", SelectUp, Some("Editor")),
215 Binding::new("shift-down", SelectDown, Some("Editor")),
216 Binding::new("ctrl-shift-N", SelectDown, Some("Editor")),
217 Binding::new("shift-left", SelectLeft, Some("Editor")),
218 Binding::new("ctrl-shift-B", SelectLeft, Some("Editor")),
219 Binding::new("shift-right", SelectRight, Some("Editor")),
220 Binding::new("ctrl-shift-F", SelectRight, Some("Editor")),
221 Binding::new(
222 "alt-shift-left",
223 SelectToPreviousWordBoundary,
224 Some("Editor"),
225 ),
226 Binding::new("alt-shift-B", SelectToPreviousWordBoundary, Some("Editor")),
227 Binding::new("alt-shift-right", SelectToNextWordBoundary, Some("Editor")),
228 Binding::new("alt-shift-F", SelectToNextWordBoundary, Some("Editor")),
229 Binding::new(
230 "cmd-shift-left",
231 SelectToBeginningOfLine(true),
232 Some("Editor"),
233 ),
234 Binding::new(
235 "ctrl-shift-A",
236 SelectToBeginningOfLine(true),
237 Some("Editor"),
238 ),
239 Binding::new("cmd-shift-right", SelectToEndOfLine(true), Some("Editor")),
240 Binding::new("ctrl-shift-E", SelectToEndOfLine(true), Some("Editor")),
241 Binding::new("cmd-shift-up", SelectToBeginning, Some("Editor")),
242 Binding::new("cmd-shift-down", SelectToEnd, Some("Editor")),
243 Binding::new("cmd-a", SelectAll, Some("Editor")),
244 Binding::new("cmd-l", SelectLine, Some("Editor")),
245 Binding::new("cmd-shift-L", SplitSelectionIntoLines, Some("Editor")),
246 Binding::new("cmd-alt-up", AddSelectionAbove, Some("Editor")),
247 Binding::new("cmd-ctrl-p", AddSelectionAbove, Some("Editor")),
248 Binding::new("cmd-alt-down", AddSelectionBelow, Some("Editor")),
249 Binding::new("cmd-ctrl-n", AddSelectionBelow, Some("Editor")),
250 Binding::new("cmd-d", SelectNext(false), Some("Editor")),
251 Binding::new("cmd-k cmd-d", SelectNext(true), Some("Editor")),
252 Binding::new("cmd-/", ToggleComments, Some("Editor")),
253 Binding::new("alt-up", SelectLargerSyntaxNode, Some("Editor")),
254 Binding::new("ctrl-w", SelectLargerSyntaxNode, Some("Editor")),
255 Binding::new("alt-down", SelectSmallerSyntaxNode, Some("Editor")),
256 Binding::new("ctrl-shift-W", SelectSmallerSyntaxNode, Some("Editor")),
257 Binding::new("f8", GoToDiagnostic(Direction::Next), Some("Editor")),
258 Binding::new("shift-f8", GoToDiagnostic(Direction::Prev), Some("Editor")),
259 Binding::new("f2", Rename, Some("Editor")),
260 Binding::new("f12", GoToDefinition, Some("Editor")),
261 Binding::new("alt-shift-f12", FindAllReferences, Some("Editor")),
262 Binding::new("ctrl-m", MoveToEnclosingBracket, Some("Editor")),
263 Binding::new("pageup", PageUp, Some("Editor")),
264 Binding::new("pagedown", PageDown, Some("Editor")),
265 Binding::new("alt-cmd-[", Fold, Some("Editor")),
266 Binding::new("alt-cmd-]", Unfold, Some("Editor")),
267 Binding::new("alt-cmd-f", FoldSelectedRanges, Some("Editor")),
268 Binding::new("ctrl-space", ShowCompletions, Some("Editor")),
269 Binding::new("cmd-.", ToggleCodeActions(false), Some("Editor")),
270 Binding::new("alt-enter", OpenExcerpts, Some("Editor")),
271 ]);
272
273 cx.add_action(Editor::open_new);
274 cx.add_action(|this: &mut Editor, action: &Scroll, cx| this.set_scroll_position(action.0, cx));
275 cx.add_action(Editor::select);
276 cx.add_action(Editor::cancel);
277 cx.add_action(Editor::handle_input);
278 cx.add_action(Editor::newline);
279 cx.add_action(Editor::backspace);
280 cx.add_action(Editor::delete);
281 cx.add_action(Editor::tab);
282 cx.add_action(Editor::outdent);
283 cx.add_action(Editor::delete_line);
284 cx.add_action(Editor::delete_to_previous_word_start);
285 cx.add_action(Editor::delete_to_next_word_end);
286 cx.add_action(Editor::delete_to_beginning_of_line);
287 cx.add_action(Editor::delete_to_end_of_line);
288 cx.add_action(Editor::cut_to_end_of_line);
289 cx.add_action(Editor::duplicate_line);
290 cx.add_action(Editor::move_line_up);
291 cx.add_action(Editor::move_line_down);
292 cx.add_action(Editor::cut);
293 cx.add_action(Editor::copy);
294 cx.add_action(Editor::paste);
295 cx.add_action(Editor::undo);
296 cx.add_action(Editor::redo);
297 cx.add_action(Editor::move_up);
298 cx.add_action(Editor::move_down);
299 cx.add_action(Editor::move_left);
300 cx.add_action(Editor::move_right);
301 cx.add_action(Editor::move_to_previous_word_start);
302 cx.add_action(Editor::move_to_next_word_end);
303 cx.add_action(Editor::move_to_beginning_of_line);
304 cx.add_action(Editor::move_to_end_of_line);
305 cx.add_action(Editor::move_to_beginning);
306 cx.add_action(Editor::move_to_end);
307 cx.add_action(Editor::select_up);
308 cx.add_action(Editor::select_down);
309 cx.add_action(Editor::select_left);
310 cx.add_action(Editor::select_right);
311 cx.add_action(Editor::select_to_previous_word_start);
312 cx.add_action(Editor::select_to_next_word_end);
313 cx.add_action(Editor::select_to_beginning_of_line);
314 cx.add_action(Editor::select_to_end_of_line);
315 cx.add_action(Editor::select_to_beginning);
316 cx.add_action(Editor::select_to_end);
317 cx.add_action(Editor::select_all);
318 cx.add_action(Editor::select_line);
319 cx.add_action(Editor::split_selection_into_lines);
320 cx.add_action(Editor::add_selection_above);
321 cx.add_action(Editor::add_selection_below);
322 cx.add_action(Editor::select_next);
323 cx.add_action(Editor::toggle_comments);
324 cx.add_action(Editor::select_larger_syntax_node);
325 cx.add_action(Editor::select_smaller_syntax_node);
326 cx.add_action(Editor::move_to_enclosing_bracket);
327 cx.add_action(Editor::go_to_diagnostic);
328 cx.add_action(Editor::go_to_definition);
329 cx.add_action(Editor::page_up);
330 cx.add_action(Editor::page_down);
331 cx.add_action(Editor::fold);
332 cx.add_action(Editor::unfold);
333 cx.add_action(Editor::fold_selected_ranges);
334 cx.add_action(Editor::show_completions);
335 cx.add_action(Editor::toggle_code_actions);
336 cx.add_action(Editor::open_excerpts);
337 cx.add_async_action(Editor::confirm_completion);
338 cx.add_async_action(Editor::confirm_code_action);
339 cx.add_async_action(Editor::rename);
340 cx.add_async_action(Editor::confirm_rename);
341 cx.add_async_action(Editor::find_all_references);
342
343 workspace::register_project_item::<Editor>(cx);
344 workspace::register_followable_item::<Editor>(cx);
345}
346
347trait InvalidationRegion {
348 fn ranges(&self) -> &[Range<Anchor>];
349}
350
351#[derive(Clone, Debug)]
352pub enum SelectPhase {
353 Begin {
354 position: DisplayPoint,
355 add: bool,
356 click_count: usize,
357 },
358 BeginColumnar {
359 position: DisplayPoint,
360 overshoot: u32,
361 },
362 Extend {
363 position: DisplayPoint,
364 click_count: usize,
365 },
366 Update {
367 position: DisplayPoint,
368 overshoot: u32,
369 scroll_position: Vector2F,
370 },
371 End,
372}
373
374#[derive(Clone, Debug)]
375pub enum SelectMode {
376 Character,
377 Word(Range<Anchor>),
378 Line(Range<Anchor>),
379 All,
380}
381
382#[derive(PartialEq, Eq)]
383pub enum Autoscroll {
384 Fit,
385 Center,
386 Newest,
387}
388
389#[derive(Copy, Clone, PartialEq, Eq)]
390pub enum EditorMode {
391 SingleLine,
392 AutoHeight { max_lines: usize },
393 Full,
394}
395
396#[derive(Clone)]
397pub enum SoftWrap {
398 None,
399 EditorWidth,
400 Column(u32),
401}
402
403#[derive(Clone)]
404pub struct EditorStyle {
405 pub text: TextStyle,
406 pub placeholder_text: Option<TextStyle>,
407 pub theme: theme::Editor,
408}
409
410type CompletionId = usize;
411
412pub type GetFieldEditorTheme = fn(&theme::Theme) -> theme::FieldEditor;
413
414type OverrideTextStyle = dyn Fn(&EditorStyle) -> Option<HighlightStyle>;
415
416pub struct Editor {
417 handle: WeakViewHandle<Self>,
418 buffer: ModelHandle<MultiBuffer>,
419 display_map: ModelHandle<DisplayMap>,
420 next_selection_id: usize,
421 selections: Arc<[Selection<Anchor>]>,
422 pending_selection: Option<PendingSelection>,
423 columnar_selection_tail: Option<Anchor>,
424 add_selections_state: Option<AddSelectionsState>,
425 select_next_state: Option<SelectNextState>,
426 selection_history:
427 HashMap<TransactionId, (Arc<[Selection<Anchor>]>, Option<Arc<[Selection<Anchor>]>>)>,
428 autoclose_stack: InvalidationStack<BracketPairState>,
429 snippet_stack: InvalidationStack<SnippetState>,
430 select_larger_syntax_node_stack: Vec<Box<[Selection<usize>]>>,
431 active_diagnostics: Option<ActiveDiagnosticGroup>,
432 scroll_position: Vector2F,
433 scroll_top_anchor: Anchor,
434 autoscroll_request: Option<(Autoscroll, bool)>,
435 soft_wrap_mode_override: Option<settings::SoftWrap>,
436 get_field_editor_theme: Option<GetFieldEditorTheme>,
437 override_text_style: Option<Box<OverrideTextStyle>>,
438 project: Option<ModelHandle<Project>>,
439 focused: bool,
440 show_local_cursors: bool,
441 show_local_selections: bool,
442 blink_epoch: usize,
443 blinking_paused: bool,
444 mode: EditorMode,
445 vertical_scroll_margin: f32,
446 placeholder_text: Option<Arc<str>>,
447 highlighted_rows: Option<Range<u32>>,
448 background_highlights: BTreeMap<TypeId, (Color, Vec<Range<Anchor>>)>,
449 nav_history: Option<ItemNavHistory>,
450 context_menu: Option<ContextMenu>,
451 completion_tasks: Vec<(CompletionId, Task<Option<()>>)>,
452 next_completion_id: CompletionId,
453 available_code_actions: Option<(ModelHandle<Buffer>, Arc<[CodeAction]>)>,
454 code_actions_task: Option<Task<()>>,
455 document_highlights_task: Option<Task<()>>,
456 pending_rename: Option<RenameState>,
457 searchable: bool,
458 cursor_shape: CursorShape,
459 leader_replica_id: Option<u16>,
460}
461
462pub struct EditorSnapshot {
463 pub mode: EditorMode,
464 pub display_snapshot: DisplaySnapshot,
465 pub placeholder_text: Option<Arc<str>>,
466 is_focused: bool,
467 scroll_position: Vector2F,
468 scroll_top_anchor: Anchor,
469}
470
471#[derive(Clone)]
472pub struct PendingSelection {
473 selection: Selection<Anchor>,
474 mode: SelectMode,
475}
476
477struct AddSelectionsState {
478 above: bool,
479 stack: Vec<usize>,
480}
481
482struct SelectNextState {
483 query: AhoCorasick,
484 wordwise: bool,
485 done: bool,
486}
487
488struct BracketPairState {
489 ranges: Vec<Range<Anchor>>,
490 pair: BracketPair,
491}
492
493struct SnippetState {
494 ranges: Vec<Vec<Range<Anchor>>>,
495 active_index: usize,
496}
497
498pub struct RenameState {
499 pub range: Range<Anchor>,
500 pub old_name: String,
501 pub editor: ViewHandle<Editor>,
502 block_id: BlockId,
503}
504
505struct InvalidationStack<T>(Vec<T>);
506
507enum ContextMenu {
508 Completions(CompletionsMenu),
509 CodeActions(CodeActionsMenu),
510}
511
512impl ContextMenu {
513 fn select_prev(&mut self, cx: &mut ViewContext<Editor>) -> bool {
514 if self.visible() {
515 match self {
516 ContextMenu::Completions(menu) => menu.select_prev(cx),
517 ContextMenu::CodeActions(menu) => menu.select_prev(cx),
518 }
519 true
520 } else {
521 false
522 }
523 }
524
525 fn select_next(&mut self, cx: &mut ViewContext<Editor>) -> bool {
526 if self.visible() {
527 match self {
528 ContextMenu::Completions(menu) => menu.select_next(cx),
529 ContextMenu::CodeActions(menu) => menu.select_next(cx),
530 }
531 true
532 } else {
533 false
534 }
535 }
536
537 fn visible(&self) -> bool {
538 match self {
539 ContextMenu::Completions(menu) => menu.visible(),
540 ContextMenu::CodeActions(menu) => menu.visible(),
541 }
542 }
543
544 fn render(
545 &self,
546 cursor_position: DisplayPoint,
547 style: EditorStyle,
548 cx: &AppContext,
549 ) -> (DisplayPoint, ElementBox) {
550 match self {
551 ContextMenu::Completions(menu) => (cursor_position, menu.render(style, cx)),
552 ContextMenu::CodeActions(menu) => menu.render(cursor_position, style),
553 }
554 }
555}
556
557struct CompletionsMenu {
558 id: CompletionId,
559 initial_position: Anchor,
560 buffer: ModelHandle<Buffer>,
561 completions: Arc<[Completion]>,
562 match_candidates: Vec<StringMatchCandidate>,
563 matches: Arc<[StringMatch]>,
564 selected_item: usize,
565 list: UniformListState,
566}
567
568impl CompletionsMenu {
569 fn select_prev(&mut self, cx: &mut ViewContext<Editor>) {
570 if self.selected_item > 0 {
571 self.selected_item -= 1;
572 self.list.scroll_to(ScrollTarget::Show(self.selected_item));
573 }
574 cx.notify();
575 }
576
577 fn select_next(&mut self, cx: &mut ViewContext<Editor>) {
578 if self.selected_item + 1 < self.matches.len() {
579 self.selected_item += 1;
580 self.list.scroll_to(ScrollTarget::Show(self.selected_item));
581 }
582 cx.notify();
583 }
584
585 fn visible(&self) -> bool {
586 !self.matches.is_empty()
587 }
588
589 fn render(&self, style: EditorStyle, _: &AppContext) -> ElementBox {
590 enum CompletionTag {}
591
592 let completions = self.completions.clone();
593 let matches = self.matches.clone();
594 let selected_item = self.selected_item;
595 let container_style = style.autocomplete.container;
596 UniformList::new(self.list.clone(), matches.len(), move |range, items, cx| {
597 let start_ix = range.start;
598 for (ix, mat) in matches[range].iter().enumerate() {
599 let completion = &completions[mat.candidate_id];
600 let item_ix = start_ix + ix;
601 items.push(
602 MouseEventHandler::new::<CompletionTag, _, _>(
603 mat.candidate_id,
604 cx,
605 |state, _| {
606 let item_style = if item_ix == selected_item {
607 style.autocomplete.selected_item
608 } else if state.hovered {
609 style.autocomplete.hovered_item
610 } else {
611 style.autocomplete.item
612 };
613
614 Text::new(completion.label.text.clone(), style.text.clone())
615 .with_soft_wrap(false)
616 .with_highlights(combine_syntax_and_fuzzy_match_highlights(
617 &completion.label.text,
618 style.text.color.into(),
619 styled_runs_for_code_label(&completion.label, &style.syntax),
620 &mat.positions,
621 ))
622 .contained()
623 .with_style(item_style)
624 .boxed()
625 },
626 )
627 .with_cursor_style(CursorStyle::PointingHand)
628 .on_mouse_down(move |cx| {
629 cx.dispatch_action(ConfirmCompletion(Some(item_ix)));
630 })
631 .boxed(),
632 );
633 }
634 })
635 .with_width_from_item(
636 self.matches
637 .iter()
638 .enumerate()
639 .max_by_key(|(_, mat)| {
640 self.completions[mat.candidate_id]
641 .label
642 .text
643 .chars()
644 .count()
645 })
646 .map(|(ix, _)| ix),
647 )
648 .contained()
649 .with_style(container_style)
650 .boxed()
651 }
652
653 pub async fn filter(&mut self, query: Option<&str>, executor: Arc<executor::Background>) {
654 let mut matches = if let Some(query) = query {
655 fuzzy::match_strings(
656 &self.match_candidates,
657 query,
658 false,
659 100,
660 &Default::default(),
661 executor,
662 )
663 .await
664 } else {
665 self.match_candidates
666 .iter()
667 .enumerate()
668 .map(|(candidate_id, candidate)| StringMatch {
669 candidate_id,
670 score: Default::default(),
671 positions: Default::default(),
672 string: candidate.string.clone(),
673 })
674 .collect()
675 };
676 matches.sort_unstable_by_key(|mat| {
677 (
678 Reverse(OrderedFloat(mat.score)),
679 self.completions[mat.candidate_id].sort_key(),
680 )
681 });
682
683 for mat in &mut matches {
684 let filter_start = self.completions[mat.candidate_id].label.filter_range.start;
685 for position in &mut mat.positions {
686 *position += filter_start;
687 }
688 }
689
690 self.matches = matches.into();
691 }
692}
693
694#[derive(Clone)]
695struct CodeActionsMenu {
696 actions: Arc<[CodeAction]>,
697 buffer: ModelHandle<Buffer>,
698 selected_item: usize,
699 list: UniformListState,
700 deployed_from_indicator: bool,
701}
702
703impl CodeActionsMenu {
704 fn select_prev(&mut self, cx: &mut ViewContext<Editor>) {
705 if self.selected_item > 0 {
706 self.selected_item -= 1;
707 cx.notify()
708 }
709 }
710
711 fn select_next(&mut self, cx: &mut ViewContext<Editor>) {
712 if self.selected_item + 1 < self.actions.len() {
713 self.selected_item += 1;
714 cx.notify()
715 }
716 }
717
718 fn visible(&self) -> bool {
719 !self.actions.is_empty()
720 }
721
722 fn render(
723 &self,
724 mut cursor_position: DisplayPoint,
725 style: EditorStyle,
726 ) -> (DisplayPoint, ElementBox) {
727 enum ActionTag {}
728
729 let container_style = style.autocomplete.container;
730 let actions = self.actions.clone();
731 let selected_item = self.selected_item;
732 let element =
733 UniformList::new(self.list.clone(), actions.len(), move |range, items, cx| {
734 let start_ix = range.start;
735 for (ix, action) in actions[range].iter().enumerate() {
736 let item_ix = start_ix + ix;
737 items.push(
738 MouseEventHandler::new::<ActionTag, _, _>(item_ix, cx, |state, _| {
739 let item_style = if item_ix == selected_item {
740 style.autocomplete.selected_item
741 } else if state.hovered {
742 style.autocomplete.hovered_item
743 } else {
744 style.autocomplete.item
745 };
746
747 Text::new(action.lsp_action.title.clone(), style.text.clone())
748 .with_soft_wrap(false)
749 .contained()
750 .with_style(item_style)
751 .boxed()
752 })
753 .with_cursor_style(CursorStyle::PointingHand)
754 .on_mouse_down(move |cx| {
755 cx.dispatch_action(ConfirmCodeAction(Some(item_ix)));
756 })
757 .boxed(),
758 );
759 }
760 })
761 .with_width_from_item(
762 self.actions
763 .iter()
764 .enumerate()
765 .max_by_key(|(_, action)| action.lsp_action.title.chars().count())
766 .map(|(ix, _)| ix),
767 )
768 .contained()
769 .with_style(container_style)
770 .boxed();
771
772 if self.deployed_from_indicator {
773 *cursor_position.column_mut() = 0;
774 }
775
776 (cursor_position, element)
777 }
778}
779
780#[derive(Debug)]
781struct ActiveDiagnosticGroup {
782 primary_range: Range<Anchor>,
783 primary_message: String,
784 blocks: HashMap<BlockId, Diagnostic>,
785 is_valid: bool,
786}
787
788#[derive(Serialize, Deserialize)]
789struct ClipboardSelection {
790 len: usize,
791 is_entire_line: bool,
792}
793
794pub struct NavigationData {
795 anchor: Anchor,
796 offset: usize,
797}
798
799pub struct EditorCreated(pub ViewHandle<Editor>);
800
801impl Editor {
802 pub fn single_line(
803 field_editor_style: Option<GetFieldEditorTheme>,
804 cx: &mut ViewContext<Self>,
805 ) -> Self {
806 let buffer = cx.add_model(|cx| Buffer::new(0, String::new(), cx));
807 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
808 Self::new(EditorMode::SingleLine, buffer, None, field_editor_style, cx)
809 }
810
811 pub fn auto_height(
812 max_lines: usize,
813 field_editor_style: Option<GetFieldEditorTheme>,
814 cx: &mut ViewContext<Self>,
815 ) -> Self {
816 let buffer = cx.add_model(|cx| Buffer::new(0, String::new(), cx));
817 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
818 Self::new(
819 EditorMode::AutoHeight { max_lines },
820 buffer,
821 None,
822 field_editor_style,
823 cx,
824 )
825 }
826
827 pub fn for_buffer(
828 buffer: ModelHandle<Buffer>,
829 project: Option<ModelHandle<Project>>,
830 cx: &mut ViewContext<Self>,
831 ) -> Self {
832 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
833 Self::new(EditorMode::Full, buffer, project, None, cx)
834 }
835
836 pub fn for_multibuffer(
837 buffer: ModelHandle<MultiBuffer>,
838 project: Option<ModelHandle<Project>>,
839 cx: &mut ViewContext<Self>,
840 ) -> Self {
841 Self::new(EditorMode::Full, buffer, project, None, cx)
842 }
843
844 pub fn clone(&self, cx: &mut ViewContext<Self>) -> Self {
845 let mut clone = Self::new(
846 self.mode,
847 self.buffer.clone(),
848 self.project.clone(),
849 self.get_field_editor_theme,
850 cx,
851 );
852 clone.scroll_position = self.scroll_position;
853 clone.scroll_top_anchor = self.scroll_top_anchor.clone();
854 clone.searchable = self.searchable;
855 clone
856 }
857
858 fn new(
859 mode: EditorMode,
860 buffer: ModelHandle<MultiBuffer>,
861 project: Option<ModelHandle<Project>>,
862 get_field_editor_theme: Option<GetFieldEditorTheme>,
863 cx: &mut ViewContext<Self>,
864 ) -> Self {
865 let display_map = cx.add_model(|cx| {
866 let settings = cx.global::<Settings>();
867 let style = build_style(&*settings, get_field_editor_theme, None, cx);
868 DisplayMap::new(
869 buffer.clone(),
870 settings.tab_size,
871 style.text.font_id,
872 style.text.font_size,
873 None,
874 2,
875 1,
876 cx,
877 )
878 });
879 cx.observe(&buffer, Self::on_buffer_changed).detach();
880 cx.subscribe(&buffer, Self::on_buffer_event).detach();
881 cx.observe(&display_map, Self::on_display_map_changed)
882 .detach();
883
884 let mut this = Self {
885 handle: cx.weak_handle(),
886 buffer,
887 display_map,
888 selections: Arc::from([]),
889 pending_selection: Some(PendingSelection {
890 selection: Selection {
891 id: 0,
892 start: Anchor::min(),
893 end: Anchor::min(),
894 reversed: false,
895 goal: SelectionGoal::None,
896 },
897 mode: SelectMode::Character,
898 }),
899 columnar_selection_tail: None,
900 next_selection_id: 1,
901 add_selections_state: None,
902 select_next_state: None,
903 selection_history: Default::default(),
904 autoclose_stack: Default::default(),
905 snippet_stack: Default::default(),
906 select_larger_syntax_node_stack: Vec::new(),
907 active_diagnostics: None,
908 soft_wrap_mode_override: None,
909 get_field_editor_theme,
910 project,
911 scroll_position: Vector2F::zero(),
912 scroll_top_anchor: Anchor::min(),
913 autoscroll_request: None,
914 focused: false,
915 show_local_cursors: false,
916 show_local_selections: true,
917 blink_epoch: 0,
918 blinking_paused: false,
919 mode,
920 vertical_scroll_margin: 3.0,
921 placeholder_text: None,
922 highlighted_rows: None,
923 background_highlights: Default::default(),
924 nav_history: None,
925 context_menu: None,
926 completion_tasks: Default::default(),
927 next_completion_id: 0,
928 available_code_actions: Default::default(),
929 code_actions_task: Default::default(),
930 document_highlights_task: Default::default(),
931 pending_rename: Default::default(),
932 searchable: true,
933 override_text_style: None,
934 cursor_shape: Default::default(),
935 leader_replica_id: None,
936 };
937 this.end_selection(cx);
938
939 let editor_created_event = EditorCreated(cx.handle());
940 cx.emit_global(editor_created_event);
941
942 this
943 }
944
945 pub fn open_new(
946 workspace: &mut Workspace,
947 _: &workspace::OpenNew,
948 cx: &mut ViewContext<Workspace>,
949 ) {
950 let project = workspace.project().clone();
951 if project.read(cx).is_remote() {
952 cx.propagate_action();
953 } else if let Some(buffer) = project
954 .update(cx, |project, cx| project.create_buffer(cx))
955 .log_err()
956 {
957 workspace.add_item(
958 Box::new(cx.add_view(|cx| Editor::for_buffer(buffer, Some(project.clone()), cx))),
959 cx,
960 );
961 }
962 }
963
964 pub fn replica_id(&self, cx: &AppContext) -> ReplicaId {
965 self.buffer.read(cx).replica_id()
966 }
967
968 pub fn buffer(&self) -> &ModelHandle<MultiBuffer> {
969 &self.buffer
970 }
971
972 pub fn title(&self, cx: &AppContext) -> String {
973 self.buffer().read(cx).title(cx)
974 }
975
976 pub fn snapshot(&mut self, cx: &mut MutableAppContext) -> EditorSnapshot {
977 EditorSnapshot {
978 mode: self.mode,
979 display_snapshot: self.display_map.update(cx, |map, cx| map.snapshot(cx)),
980 scroll_position: self.scroll_position,
981 scroll_top_anchor: self.scroll_top_anchor.clone(),
982 placeholder_text: self.placeholder_text.clone(),
983 is_focused: self
984 .handle
985 .upgrade(cx)
986 .map_or(false, |handle| handle.is_focused(cx)),
987 }
988 }
989
990 pub fn language<'a>(&self, cx: &'a AppContext) -> Option<&'a Arc<Language>> {
991 self.buffer.read(cx).language(cx)
992 }
993
994 fn style(&self, cx: &AppContext) -> EditorStyle {
995 build_style(
996 cx.global::<Settings>(),
997 self.get_field_editor_theme,
998 self.override_text_style.as_deref(),
999 cx,
1000 )
1001 }
1002
1003 pub fn set_placeholder_text(
1004 &mut self,
1005 placeholder_text: impl Into<Arc<str>>,
1006 cx: &mut ViewContext<Self>,
1007 ) {
1008 self.placeholder_text = Some(placeholder_text.into());
1009 cx.notify();
1010 }
1011
1012 pub fn set_vertical_scroll_margin(&mut self, margin_rows: usize, cx: &mut ViewContext<Self>) {
1013 self.vertical_scroll_margin = margin_rows as f32;
1014 cx.notify();
1015 }
1016
1017 pub fn set_scroll_position(&mut self, scroll_position: Vector2F, cx: &mut ViewContext<Self>) {
1018 self.set_scroll_position_internal(scroll_position, true, cx);
1019 }
1020
1021 fn set_scroll_position_internal(
1022 &mut self,
1023 scroll_position: Vector2F,
1024 local: bool,
1025 cx: &mut ViewContext<Self>,
1026 ) {
1027 let map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1028
1029 if scroll_position.y() == 0. {
1030 self.scroll_top_anchor = Anchor::min();
1031 self.scroll_position = scroll_position;
1032 } else {
1033 let scroll_top_buffer_offset =
1034 DisplayPoint::new(scroll_position.y() as u32, 0).to_offset(&map, Bias::Right);
1035 let anchor = map
1036 .buffer_snapshot
1037 .anchor_at(scroll_top_buffer_offset, Bias::Right);
1038 self.scroll_position = vec2f(
1039 scroll_position.x(),
1040 scroll_position.y() - anchor.to_display_point(&map).row() as f32,
1041 );
1042 self.scroll_top_anchor = anchor;
1043 }
1044
1045 cx.emit(Event::ScrollPositionChanged { local });
1046 cx.notify();
1047 }
1048
1049 fn set_scroll_top_anchor(
1050 &mut self,
1051 anchor: Anchor,
1052 position: Vector2F,
1053 cx: &mut ViewContext<Self>,
1054 ) {
1055 self.scroll_top_anchor = anchor;
1056 self.scroll_position = position;
1057 cx.emit(Event::ScrollPositionChanged { local: false });
1058 cx.notify();
1059 }
1060
1061 pub fn set_cursor_shape(&mut self, cursor_shape: CursorShape, cx: &mut ViewContext<Self>) {
1062 self.cursor_shape = cursor_shape;
1063 cx.notify();
1064 }
1065
1066 pub fn scroll_position(&self, cx: &mut ViewContext<Self>) -> Vector2F {
1067 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1068 compute_scroll_position(&display_map, self.scroll_position, &self.scroll_top_anchor)
1069 }
1070
1071 pub fn clamp_scroll_left(&mut self, max: f32) -> bool {
1072 if max < self.scroll_position.x() {
1073 self.scroll_position.set_x(max);
1074 true
1075 } else {
1076 false
1077 }
1078 }
1079
1080 pub fn autoscroll_vertically(
1081 &mut self,
1082 viewport_height: f32,
1083 line_height: f32,
1084 cx: &mut ViewContext<Self>,
1085 ) -> bool {
1086 let visible_lines = viewport_height / line_height;
1087 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1088 let mut scroll_position =
1089 compute_scroll_position(&display_map, self.scroll_position, &self.scroll_top_anchor);
1090 let max_scroll_top = if matches!(self.mode, EditorMode::AutoHeight { .. }) {
1091 (display_map.max_point().row() as f32 - visible_lines + 1.).max(0.)
1092 } else {
1093 display_map.max_point().row().saturating_sub(1) as f32
1094 };
1095 if scroll_position.y() > max_scroll_top {
1096 scroll_position.set_y(max_scroll_top);
1097 self.set_scroll_position(scroll_position, cx);
1098 }
1099
1100 let (autoscroll, local) = if let Some(autoscroll) = self.autoscroll_request.take() {
1101 autoscroll
1102 } else {
1103 return false;
1104 };
1105
1106 let first_cursor_top;
1107 let last_cursor_bottom;
1108 if let Some(highlighted_rows) = &self.highlighted_rows {
1109 first_cursor_top = highlighted_rows.start as f32;
1110 last_cursor_bottom = first_cursor_top + 1.;
1111 } else if autoscroll == Autoscroll::Newest {
1112 let newest_selection =
1113 self.newest_selection_with_snapshot::<Point>(&display_map.buffer_snapshot);
1114 first_cursor_top = newest_selection.head().to_display_point(&display_map).row() as f32;
1115 last_cursor_bottom = first_cursor_top + 1.;
1116 } else {
1117 let selections = self.local_selections::<Point>(cx);
1118 first_cursor_top = selections
1119 .first()
1120 .unwrap()
1121 .head()
1122 .to_display_point(&display_map)
1123 .row() as f32;
1124 last_cursor_bottom = selections
1125 .last()
1126 .unwrap()
1127 .head()
1128 .to_display_point(&display_map)
1129 .row() as f32
1130 + 1.0;
1131 }
1132
1133 let margin = if matches!(self.mode, EditorMode::AutoHeight { .. }) {
1134 0.
1135 } else {
1136 ((visible_lines - (last_cursor_bottom - first_cursor_top)) / 2.0).floor()
1137 };
1138 if margin < 0.0 {
1139 return false;
1140 }
1141
1142 match autoscroll {
1143 Autoscroll::Fit | Autoscroll::Newest => {
1144 let margin = margin.min(self.vertical_scroll_margin);
1145 let target_top = (first_cursor_top - margin).max(0.0);
1146 let target_bottom = last_cursor_bottom + margin;
1147 let start_row = scroll_position.y();
1148 let end_row = start_row + visible_lines;
1149
1150 if target_top < start_row {
1151 scroll_position.set_y(target_top);
1152 self.set_scroll_position_internal(scroll_position, local, cx);
1153 } else if target_bottom >= end_row {
1154 scroll_position.set_y(target_bottom - visible_lines);
1155 self.set_scroll_position_internal(scroll_position, local, cx);
1156 }
1157 }
1158 Autoscroll::Center => {
1159 scroll_position.set_y((first_cursor_top - margin).max(0.0));
1160 self.set_scroll_position_internal(scroll_position, local, cx);
1161 }
1162 }
1163
1164 true
1165 }
1166
1167 pub fn autoscroll_horizontally(
1168 &mut self,
1169 start_row: u32,
1170 viewport_width: f32,
1171 scroll_width: f32,
1172 max_glyph_width: f32,
1173 layouts: &[text_layout::Line],
1174 cx: &mut ViewContext<Self>,
1175 ) -> bool {
1176 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1177 let selections = self.local_selections::<Point>(cx);
1178
1179 let mut target_left;
1180 let mut target_right;
1181
1182 if self.highlighted_rows.is_some() {
1183 target_left = 0.0_f32;
1184 target_right = 0.0_f32;
1185 } else {
1186 target_left = std::f32::INFINITY;
1187 target_right = 0.0_f32;
1188 for selection in selections {
1189 let head = selection.head().to_display_point(&display_map);
1190 if head.row() >= start_row && head.row() < start_row + layouts.len() as u32 {
1191 let start_column = head.column().saturating_sub(3);
1192 let end_column = cmp::min(display_map.line_len(head.row()), head.column() + 3);
1193 target_left = target_left.min(
1194 layouts[(head.row() - start_row) as usize]
1195 .x_for_index(start_column as usize),
1196 );
1197 target_right = target_right.max(
1198 layouts[(head.row() - start_row) as usize].x_for_index(end_column as usize)
1199 + max_glyph_width,
1200 );
1201 }
1202 }
1203 }
1204
1205 target_right = target_right.min(scroll_width);
1206
1207 if target_right - target_left > viewport_width {
1208 return false;
1209 }
1210
1211 let scroll_left = self.scroll_position.x() * max_glyph_width;
1212 let scroll_right = scroll_left + viewport_width;
1213
1214 if target_left < scroll_left {
1215 self.scroll_position.set_x(target_left / max_glyph_width);
1216 true
1217 } else if target_right > scroll_right {
1218 self.scroll_position
1219 .set_x((target_right - viewport_width) / max_glyph_width);
1220 true
1221 } else {
1222 false
1223 }
1224 }
1225
1226 pub fn move_selections(
1227 &mut self,
1228 cx: &mut ViewContext<Self>,
1229 move_selection: impl Fn(&DisplaySnapshot, &mut Selection<DisplayPoint>),
1230 ) {
1231 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1232 let selections = self
1233 .local_selections::<Point>(cx)
1234 .into_iter()
1235 .map(|selection| {
1236 let mut selection = Selection {
1237 id: selection.id,
1238 start: selection.start.to_display_point(&display_map),
1239 end: selection.end.to_display_point(&display_map),
1240 reversed: selection.reversed,
1241 goal: selection.goal,
1242 };
1243 move_selection(&display_map, &mut selection);
1244 Selection {
1245 id: selection.id,
1246 start: selection.start.to_point(&display_map),
1247 end: selection.end.to_point(&display_map),
1248 reversed: selection.reversed,
1249 goal: selection.goal,
1250 }
1251 })
1252 .collect();
1253 self.update_selections(selections, Some(Autoscroll::Fit), cx);
1254 }
1255
1256 pub fn move_selection_heads(
1257 &mut self,
1258 cx: &mut ViewContext<Self>,
1259 update_head: impl Fn(
1260 &DisplaySnapshot,
1261 DisplayPoint,
1262 SelectionGoal,
1263 ) -> (DisplayPoint, SelectionGoal),
1264 ) {
1265 self.move_selections(cx, |map, selection| {
1266 let (new_head, new_goal) = update_head(map, selection.head(), selection.goal);
1267 selection.set_head(new_head, new_goal);
1268 });
1269 }
1270
1271 pub fn move_cursors(
1272 &mut self,
1273 cx: &mut ViewContext<Self>,
1274 update_cursor_position: impl Fn(
1275 &DisplaySnapshot,
1276 DisplayPoint,
1277 SelectionGoal,
1278 ) -> (DisplayPoint, SelectionGoal),
1279 ) {
1280 self.move_selections(cx, |map, selection| {
1281 let (cursor, new_goal) = update_cursor_position(map, selection.head(), selection.goal);
1282 selection.collapse_to(cursor, new_goal)
1283 });
1284 }
1285
1286 fn select(&mut self, Select(phase): &Select, cx: &mut ViewContext<Self>) {
1287 self.hide_context_menu(cx);
1288
1289 match phase {
1290 SelectPhase::Begin {
1291 position,
1292 add,
1293 click_count,
1294 } => self.begin_selection(*position, *add, *click_count, cx),
1295 SelectPhase::BeginColumnar {
1296 position,
1297 overshoot,
1298 } => self.begin_columnar_selection(*position, *overshoot, cx),
1299 SelectPhase::Extend {
1300 position,
1301 click_count,
1302 } => self.extend_selection(*position, *click_count, cx),
1303 SelectPhase::Update {
1304 position,
1305 overshoot,
1306 scroll_position,
1307 } => self.update_selection(*position, *overshoot, *scroll_position, cx),
1308 SelectPhase::End => self.end_selection(cx),
1309 }
1310 }
1311
1312 fn extend_selection(
1313 &mut self,
1314 position: DisplayPoint,
1315 click_count: usize,
1316 cx: &mut ViewContext<Self>,
1317 ) {
1318 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1319 let tail = self
1320 .newest_selection_with_snapshot::<usize>(&display_map.buffer_snapshot)
1321 .tail();
1322 self.begin_selection(position, false, click_count, cx);
1323
1324 let position = position.to_offset(&display_map, Bias::Left);
1325 let tail_anchor = display_map.buffer_snapshot.anchor_before(tail);
1326 let mut pending = self.pending_selection.clone().unwrap();
1327
1328 if position >= tail {
1329 pending.selection.start = tail_anchor.clone();
1330 } else {
1331 pending.selection.end = tail_anchor.clone();
1332 pending.selection.reversed = true;
1333 }
1334
1335 match &mut pending.mode {
1336 SelectMode::Word(range) | SelectMode::Line(range) => {
1337 *range = tail_anchor.clone()..tail_anchor
1338 }
1339 _ => {}
1340 }
1341
1342 self.set_selections(self.selections.clone(), Some(pending), true, cx);
1343 }
1344
1345 fn begin_selection(
1346 &mut self,
1347 position: DisplayPoint,
1348 add: bool,
1349 click_count: usize,
1350 cx: &mut ViewContext<Self>,
1351 ) {
1352 if !self.focused {
1353 cx.focus_self();
1354 cx.emit(Event::Activate);
1355 }
1356
1357 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1358 let buffer = &display_map.buffer_snapshot;
1359 let newest_selection = self.newest_anchor_selection().clone();
1360
1361 let start;
1362 let end;
1363 let mode;
1364 match click_count {
1365 1 => {
1366 start = buffer.anchor_before(position.to_point(&display_map));
1367 end = start.clone();
1368 mode = SelectMode::Character;
1369 }
1370 2 => {
1371 let range = movement::surrounding_word(&display_map, position);
1372 start = buffer.anchor_before(range.start.to_point(&display_map));
1373 end = buffer.anchor_before(range.end.to_point(&display_map));
1374 mode = SelectMode::Word(start.clone()..end.clone());
1375 }
1376 3 => {
1377 let position = display_map
1378 .clip_point(position, Bias::Left)
1379 .to_point(&display_map);
1380 let line_start = display_map.prev_line_boundary(position).0;
1381 let next_line_start = buffer.clip_point(
1382 display_map.next_line_boundary(position).0 + Point::new(1, 0),
1383 Bias::Left,
1384 );
1385 start = buffer.anchor_before(line_start);
1386 end = buffer.anchor_before(next_line_start);
1387 mode = SelectMode::Line(start.clone()..end.clone());
1388 }
1389 _ => {
1390 start = buffer.anchor_before(0);
1391 end = buffer.anchor_before(buffer.len());
1392 mode = SelectMode::All;
1393 }
1394 }
1395
1396 self.push_to_nav_history(newest_selection.head(), Some(end.to_point(&buffer)), cx);
1397
1398 let selection = Selection {
1399 id: post_inc(&mut self.next_selection_id),
1400 start,
1401 end,
1402 reversed: false,
1403 goal: SelectionGoal::None,
1404 };
1405
1406 let mut selections;
1407 if add {
1408 selections = self.selections.clone();
1409 // Remove the newest selection if it was added due to a previous mouse up
1410 // within this multi-click.
1411 if click_count > 1 {
1412 selections = self
1413 .selections
1414 .iter()
1415 .filter(|selection| selection.id != newest_selection.id)
1416 .cloned()
1417 .collect();
1418 }
1419 } else {
1420 selections = Arc::from([]);
1421 }
1422 self.set_selections(
1423 selections,
1424 Some(PendingSelection { selection, mode }),
1425 true,
1426 cx,
1427 );
1428
1429 cx.notify();
1430 }
1431
1432 fn begin_columnar_selection(
1433 &mut self,
1434 position: DisplayPoint,
1435 overshoot: u32,
1436 cx: &mut ViewContext<Self>,
1437 ) {
1438 if !self.focused {
1439 cx.focus_self();
1440 cx.emit(Event::Activate);
1441 }
1442
1443 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1444 let tail = self
1445 .newest_selection_with_snapshot::<Point>(&display_map.buffer_snapshot)
1446 .tail();
1447 self.columnar_selection_tail = Some(display_map.buffer_snapshot.anchor_before(tail));
1448
1449 self.select_columns(
1450 tail.to_display_point(&display_map),
1451 position,
1452 overshoot,
1453 &display_map,
1454 cx,
1455 );
1456 }
1457
1458 fn update_selection(
1459 &mut self,
1460 position: DisplayPoint,
1461 overshoot: u32,
1462 scroll_position: Vector2F,
1463 cx: &mut ViewContext<Self>,
1464 ) {
1465 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1466
1467 if let Some(tail) = self.columnar_selection_tail.as_ref() {
1468 let tail = tail.to_display_point(&display_map);
1469 self.select_columns(tail, position, overshoot, &display_map, cx);
1470 } else if let Some(mut pending) = self.pending_selection.clone() {
1471 let buffer = self.buffer.read(cx).snapshot(cx);
1472 let head;
1473 let tail;
1474 match &pending.mode {
1475 SelectMode::Character => {
1476 head = position.to_point(&display_map);
1477 tail = pending.selection.tail().to_point(&buffer);
1478 }
1479 SelectMode::Word(original_range) => {
1480 let original_display_range = original_range.start.to_display_point(&display_map)
1481 ..original_range.end.to_display_point(&display_map);
1482 let original_buffer_range = original_display_range.start.to_point(&display_map)
1483 ..original_display_range.end.to_point(&display_map);
1484 if movement::is_inside_word(&display_map, position)
1485 || original_display_range.contains(&position)
1486 {
1487 let word_range = movement::surrounding_word(&display_map, position);
1488 if word_range.start < original_display_range.start {
1489 head = word_range.start.to_point(&display_map);
1490 } else {
1491 head = word_range.end.to_point(&display_map);
1492 }
1493 } else {
1494 head = position.to_point(&display_map);
1495 }
1496
1497 if head <= original_buffer_range.start {
1498 tail = original_buffer_range.end;
1499 } else {
1500 tail = original_buffer_range.start;
1501 }
1502 }
1503 SelectMode::Line(original_range) => {
1504 let original_range = original_range.to_point(&display_map.buffer_snapshot);
1505
1506 let position = display_map
1507 .clip_point(position, Bias::Left)
1508 .to_point(&display_map);
1509 let line_start = display_map.prev_line_boundary(position).0;
1510 let next_line_start = buffer.clip_point(
1511 display_map.next_line_boundary(position).0 + Point::new(1, 0),
1512 Bias::Left,
1513 );
1514
1515 if line_start < original_range.start {
1516 head = line_start
1517 } else {
1518 head = next_line_start
1519 }
1520
1521 if head <= original_range.start {
1522 tail = original_range.end;
1523 } else {
1524 tail = original_range.start;
1525 }
1526 }
1527 SelectMode::All => {
1528 return;
1529 }
1530 };
1531
1532 if head < tail {
1533 pending.selection.start = buffer.anchor_before(head);
1534 pending.selection.end = buffer.anchor_before(tail);
1535 pending.selection.reversed = true;
1536 } else {
1537 pending.selection.start = buffer.anchor_before(tail);
1538 pending.selection.end = buffer.anchor_before(head);
1539 pending.selection.reversed = false;
1540 }
1541 self.set_selections(self.selections.clone(), Some(pending), true, cx);
1542 } else {
1543 log::error!("update_selection dispatched with no pending selection");
1544 return;
1545 }
1546
1547 self.set_scroll_position(scroll_position, cx);
1548 cx.notify();
1549 }
1550
1551 fn end_selection(&mut self, cx: &mut ViewContext<Self>) {
1552 self.columnar_selection_tail.take();
1553 if self.pending_selection.is_some() {
1554 let selections = self.local_selections::<usize>(cx);
1555 self.update_selections(selections, None, cx);
1556 }
1557 }
1558
1559 fn select_columns(
1560 &mut self,
1561 tail: DisplayPoint,
1562 head: DisplayPoint,
1563 overshoot: u32,
1564 display_map: &DisplaySnapshot,
1565 cx: &mut ViewContext<Self>,
1566 ) {
1567 let start_row = cmp::min(tail.row(), head.row());
1568 let end_row = cmp::max(tail.row(), head.row());
1569 let start_column = cmp::min(tail.column(), head.column() + overshoot);
1570 let end_column = cmp::max(tail.column(), head.column() + overshoot);
1571 let reversed = start_column < tail.column();
1572
1573 let selections = (start_row..=end_row)
1574 .filter_map(|row| {
1575 if start_column <= display_map.line_len(row) && !display_map.is_block_line(row) {
1576 let start = display_map
1577 .clip_point(DisplayPoint::new(row, start_column), Bias::Left)
1578 .to_point(&display_map);
1579 let end = display_map
1580 .clip_point(DisplayPoint::new(row, end_column), Bias::Right)
1581 .to_point(&display_map);
1582 Some(Selection {
1583 id: post_inc(&mut self.next_selection_id),
1584 start,
1585 end,
1586 reversed,
1587 goal: SelectionGoal::None,
1588 })
1589 } else {
1590 None
1591 }
1592 })
1593 .collect::<Vec<_>>();
1594
1595 self.update_selections(selections, None, cx);
1596 cx.notify();
1597 }
1598
1599 pub fn is_selecting(&self) -> bool {
1600 self.pending_selection.is_some() || self.columnar_selection_tail.is_some()
1601 }
1602
1603 pub fn cancel(&mut self, _: &Cancel, cx: &mut ViewContext<Self>) {
1604 if self.take_rename(false, cx).is_some() {
1605 return;
1606 }
1607
1608 if self.hide_context_menu(cx).is_some() {
1609 return;
1610 }
1611
1612 if self.snippet_stack.pop().is_some() {
1613 return;
1614 }
1615
1616 if self.mode != EditorMode::Full {
1617 cx.propagate_action();
1618 return;
1619 }
1620
1621 if self.active_diagnostics.is_some() {
1622 self.dismiss_diagnostics(cx);
1623 } else if let Some(pending) = self.pending_selection.clone() {
1624 let mut selections = self.selections.clone();
1625 if selections.is_empty() {
1626 selections = Arc::from([pending.selection]);
1627 }
1628 self.set_selections(selections, None, true, cx);
1629 self.request_autoscroll(Autoscroll::Fit, cx);
1630 } else {
1631 let mut oldest_selection = self.oldest_selection::<usize>(&cx);
1632 if self.selection_count() == 1 {
1633 if oldest_selection.is_empty() {
1634 cx.propagate_action();
1635 return;
1636 }
1637
1638 oldest_selection.start = oldest_selection.head().clone();
1639 oldest_selection.end = oldest_selection.head().clone();
1640 }
1641 self.update_selections(vec![oldest_selection], Some(Autoscroll::Fit), cx);
1642 }
1643 }
1644
1645 #[cfg(any(test, feature = "test-support"))]
1646 pub fn selected_ranges<D: TextDimension + Ord + Sub<D, Output = D>>(
1647 &self,
1648 cx: &AppContext,
1649 ) -> Vec<Range<D>> {
1650 self.local_selections::<D>(cx)
1651 .iter()
1652 .map(|s| {
1653 if s.reversed {
1654 s.end.clone()..s.start.clone()
1655 } else {
1656 s.start.clone()..s.end.clone()
1657 }
1658 })
1659 .collect()
1660 }
1661
1662 #[cfg(any(test, feature = "test-support"))]
1663 pub fn selected_display_ranges(&self, cx: &mut MutableAppContext) -> Vec<Range<DisplayPoint>> {
1664 let display_map = self
1665 .display_map
1666 .update(cx, |display_map, cx| display_map.snapshot(cx));
1667 self.selections
1668 .iter()
1669 .chain(
1670 self.pending_selection
1671 .as_ref()
1672 .map(|pending| &pending.selection),
1673 )
1674 .map(|s| {
1675 if s.reversed {
1676 s.end.to_display_point(&display_map)..s.start.to_display_point(&display_map)
1677 } else {
1678 s.start.to_display_point(&display_map)..s.end.to_display_point(&display_map)
1679 }
1680 })
1681 .collect()
1682 }
1683
1684 pub fn select_ranges<I, T>(
1685 &mut self,
1686 ranges: I,
1687 autoscroll: Option<Autoscroll>,
1688 cx: &mut ViewContext<Self>,
1689 ) where
1690 I: IntoIterator<Item = Range<T>>,
1691 T: ToOffset,
1692 {
1693 let buffer = self.buffer.read(cx).snapshot(cx);
1694 let selections = ranges
1695 .into_iter()
1696 .map(|range| {
1697 let mut start = range.start.to_offset(&buffer);
1698 let mut end = range.end.to_offset(&buffer);
1699 let reversed = if start > end {
1700 mem::swap(&mut start, &mut end);
1701 true
1702 } else {
1703 false
1704 };
1705 Selection {
1706 id: post_inc(&mut self.next_selection_id),
1707 start,
1708 end,
1709 reversed,
1710 goal: SelectionGoal::None,
1711 }
1712 })
1713 .collect::<Vec<_>>();
1714 self.update_selections(selections, autoscroll, cx);
1715 }
1716
1717 #[cfg(any(test, feature = "test-support"))]
1718 pub fn select_display_ranges<'a, T>(&mut self, ranges: T, cx: &mut ViewContext<Self>)
1719 where
1720 T: IntoIterator<Item = &'a Range<DisplayPoint>>,
1721 {
1722 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1723 let selections = ranges
1724 .into_iter()
1725 .map(|range| {
1726 let mut start = range.start;
1727 let mut end = range.end;
1728 let reversed = if start > end {
1729 mem::swap(&mut start, &mut end);
1730 true
1731 } else {
1732 false
1733 };
1734 Selection {
1735 id: post_inc(&mut self.next_selection_id),
1736 start: start.to_point(&display_map),
1737 end: end.to_point(&display_map),
1738 reversed,
1739 goal: SelectionGoal::None,
1740 }
1741 })
1742 .collect();
1743 self.update_selections(selections, None, cx);
1744 }
1745
1746 pub fn handle_input(&mut self, action: &Input, cx: &mut ViewContext<Self>) {
1747 let text = action.0.as_ref();
1748 if !self.skip_autoclose_end(text, cx) {
1749 self.start_transaction(cx);
1750 if !self.surround_with_bracket_pair(text, cx) {
1751 self.insert(text, cx);
1752 self.autoclose_bracket_pairs(cx);
1753 }
1754 self.end_transaction(cx);
1755 self.trigger_completion_on_input(text, cx);
1756 }
1757 }
1758
1759 pub fn newline(&mut self, _: &Newline, cx: &mut ViewContext<Self>) {
1760 self.start_transaction(cx);
1761 let mut old_selections = SmallVec::<[_; 32]>::new();
1762 {
1763 let selections = self.local_selections::<usize>(cx);
1764 let buffer = self.buffer.read(cx).snapshot(cx);
1765 for selection in selections.iter() {
1766 let start_point = selection.start.to_point(&buffer);
1767 let indent = buffer
1768 .indent_column_for_line(start_point.row)
1769 .min(start_point.column);
1770 let start = selection.start;
1771 let end = selection.end;
1772
1773 let mut insert_extra_newline = false;
1774 if let Some(language) = buffer.language() {
1775 let leading_whitespace_len = buffer
1776 .reversed_chars_at(start)
1777 .take_while(|c| c.is_whitespace() && *c != '\n')
1778 .map(|c| c.len_utf8())
1779 .sum::<usize>();
1780
1781 let trailing_whitespace_len = buffer
1782 .chars_at(end)
1783 .take_while(|c| c.is_whitespace() && *c != '\n')
1784 .map(|c| c.len_utf8())
1785 .sum::<usize>();
1786
1787 insert_extra_newline = language.brackets().iter().any(|pair| {
1788 let pair_start = pair.start.trim_end();
1789 let pair_end = pair.end.trim_start();
1790
1791 pair.newline
1792 && buffer.contains_str_at(end + trailing_whitespace_len, pair_end)
1793 && buffer.contains_str_at(
1794 (start - leading_whitespace_len).saturating_sub(pair_start.len()),
1795 pair_start,
1796 )
1797 });
1798 }
1799
1800 old_selections.push((
1801 selection.id,
1802 buffer.anchor_after(end),
1803 start..end,
1804 indent,
1805 insert_extra_newline,
1806 ));
1807 }
1808 }
1809
1810 self.buffer.update(cx, |buffer, cx| {
1811 let mut delta = 0_isize;
1812 let mut pending_edit: Option<PendingEdit> = None;
1813 for (_, _, range, indent, insert_extra_newline) in &old_selections {
1814 if pending_edit.as_ref().map_or(false, |pending| {
1815 pending.indent != *indent
1816 || pending.insert_extra_newline != *insert_extra_newline
1817 }) {
1818 let pending = pending_edit.take().unwrap();
1819 let mut new_text = String::with_capacity(1 + pending.indent as usize);
1820 new_text.push('\n');
1821 new_text.extend(iter::repeat(' ').take(pending.indent as usize));
1822 if pending.insert_extra_newline {
1823 new_text = new_text.repeat(2);
1824 }
1825 buffer.edit_with_autoindent(pending.ranges, new_text, cx);
1826 delta += pending.delta;
1827 }
1828
1829 let start = (range.start as isize + delta) as usize;
1830 let end = (range.end as isize + delta) as usize;
1831 let mut text_len = *indent as usize + 1;
1832 if *insert_extra_newline {
1833 text_len *= 2;
1834 }
1835
1836 let pending = pending_edit.get_or_insert_with(Default::default);
1837 pending.delta += text_len as isize - (end - start) as isize;
1838 pending.indent = *indent;
1839 pending.insert_extra_newline = *insert_extra_newline;
1840 pending.ranges.push(start..end);
1841 }
1842
1843 let pending = pending_edit.unwrap();
1844 let mut new_text = String::with_capacity(1 + pending.indent as usize);
1845 new_text.push('\n');
1846 new_text.extend(iter::repeat(' ').take(pending.indent as usize));
1847 if pending.insert_extra_newline {
1848 new_text = new_text.repeat(2);
1849 }
1850 buffer.edit_with_autoindent(pending.ranges, new_text, cx);
1851
1852 let buffer = buffer.read(cx);
1853 self.selections = self
1854 .selections
1855 .iter()
1856 .cloned()
1857 .zip(old_selections)
1858 .map(
1859 |(mut new_selection, (_, end_anchor, _, _, insert_extra_newline))| {
1860 let mut cursor = end_anchor.to_point(&buffer);
1861 if insert_extra_newline {
1862 cursor.row -= 1;
1863 cursor.column = buffer.line_len(cursor.row);
1864 }
1865 let anchor = buffer.anchor_after(cursor);
1866 new_selection.start = anchor.clone();
1867 new_selection.end = anchor;
1868 new_selection
1869 },
1870 )
1871 .collect();
1872 });
1873
1874 self.request_autoscroll(Autoscroll::Fit, cx);
1875 self.end_transaction(cx);
1876
1877 #[derive(Default)]
1878 struct PendingEdit {
1879 indent: u32,
1880 insert_extra_newline: bool,
1881 delta: isize,
1882 ranges: SmallVec<[Range<usize>; 32]>,
1883 }
1884 }
1885
1886 pub fn insert(&mut self, text: &str, cx: &mut ViewContext<Self>) {
1887 self.start_transaction(cx);
1888
1889 let old_selections = self.local_selections::<usize>(cx);
1890 let selection_anchors = self.buffer.update(cx, |buffer, cx| {
1891 let anchors = {
1892 let snapshot = buffer.read(cx);
1893 old_selections
1894 .iter()
1895 .map(|s| (s.id, s.goal, snapshot.anchor_after(s.end)))
1896 .collect::<Vec<_>>()
1897 };
1898 let edit_ranges = old_selections.iter().map(|s| s.start..s.end);
1899 buffer.edit_with_autoindent(edit_ranges, text, cx);
1900 anchors
1901 });
1902
1903 let selections = {
1904 let snapshot = self.buffer.read(cx).read(cx);
1905 selection_anchors
1906 .into_iter()
1907 .map(|(id, goal, position)| {
1908 let position = position.to_offset(&snapshot);
1909 Selection {
1910 id,
1911 start: position,
1912 end: position,
1913 goal,
1914 reversed: false,
1915 }
1916 })
1917 .collect()
1918 };
1919 self.update_selections(selections, Some(Autoscroll::Fit), cx);
1920 self.end_transaction(cx);
1921 }
1922
1923 fn trigger_completion_on_input(&mut self, text: &str, cx: &mut ViewContext<Self>) {
1924 let selection = self.newest_anchor_selection();
1925 if self
1926 .buffer
1927 .read(cx)
1928 .is_completion_trigger(selection.head(), text, cx)
1929 {
1930 self.show_completions(&ShowCompletions, cx);
1931 } else {
1932 self.hide_context_menu(cx);
1933 }
1934 }
1935
1936 fn surround_with_bracket_pair(&mut self, text: &str, cx: &mut ViewContext<Self>) -> bool {
1937 let snapshot = self.buffer.read(cx).snapshot(cx);
1938 if let Some(pair) = snapshot
1939 .language()
1940 .and_then(|language| language.brackets().iter().find(|b| b.start == text))
1941 .cloned()
1942 {
1943 if self
1944 .local_selections::<usize>(cx)
1945 .iter()
1946 .any(|selection| selection.is_empty())
1947 {
1948 false
1949 } else {
1950 let mut selections = self.selections.to_vec();
1951 for selection in &mut selections {
1952 selection.end = selection.end.bias_left(&snapshot);
1953 }
1954 drop(snapshot);
1955
1956 self.buffer.update(cx, |buffer, cx| {
1957 buffer.edit(
1958 selections.iter().map(|s| s.start.clone()..s.start.clone()),
1959 &pair.start,
1960 cx,
1961 );
1962 buffer.edit(
1963 selections.iter().map(|s| s.end.clone()..s.end.clone()),
1964 &pair.end,
1965 cx,
1966 );
1967 });
1968
1969 let snapshot = self.buffer.read(cx).read(cx);
1970 for selection in &mut selections {
1971 selection.end = selection.end.bias_right(&snapshot);
1972 }
1973 drop(snapshot);
1974
1975 self.set_selections(selections.into(), None, true, cx);
1976 true
1977 }
1978 } else {
1979 false
1980 }
1981 }
1982
1983 fn autoclose_bracket_pairs(&mut self, cx: &mut ViewContext<Self>) {
1984 let selections = self.local_selections::<usize>(cx);
1985 let mut bracket_pair_state = None;
1986 let mut new_selections = None;
1987 self.buffer.update(cx, |buffer, cx| {
1988 let mut snapshot = buffer.snapshot(cx);
1989 let left_biased_selections = selections
1990 .iter()
1991 .map(|selection| Selection {
1992 id: selection.id,
1993 start: snapshot.anchor_before(selection.start),
1994 end: snapshot.anchor_before(selection.end),
1995 reversed: selection.reversed,
1996 goal: selection.goal,
1997 })
1998 .collect::<Vec<_>>();
1999
2000 let autoclose_pair = snapshot.language().and_then(|language| {
2001 let first_selection_start = selections.first().unwrap().start;
2002 let pair = language.brackets().iter().find(|pair| {
2003 snapshot.contains_str_at(
2004 first_selection_start.saturating_sub(pair.start.len()),
2005 &pair.start,
2006 )
2007 });
2008 pair.and_then(|pair| {
2009 let should_autoclose = selections.iter().all(|selection| {
2010 // Ensure all selections are parked at the end of a pair start.
2011 if snapshot.contains_str_at(
2012 selection.start.saturating_sub(pair.start.len()),
2013 &pair.start,
2014 ) {
2015 snapshot
2016 .chars_at(selection.start)
2017 .next()
2018 .map_or(true, |c| language.should_autoclose_before(c))
2019 } else {
2020 false
2021 }
2022 });
2023
2024 if should_autoclose {
2025 Some(pair.clone())
2026 } else {
2027 None
2028 }
2029 })
2030 });
2031
2032 if let Some(pair) = autoclose_pair {
2033 let selection_ranges = selections
2034 .iter()
2035 .map(|selection| {
2036 let start = selection.start.to_offset(&snapshot);
2037 start..start
2038 })
2039 .collect::<SmallVec<[_; 32]>>();
2040
2041 buffer.edit(selection_ranges, &pair.end, cx);
2042 snapshot = buffer.snapshot(cx);
2043
2044 new_selections = Some(
2045 self.resolve_selections::<usize, _>(left_biased_selections.iter(), &snapshot)
2046 .collect::<Vec<_>>(),
2047 );
2048
2049 if pair.end.len() == 1 {
2050 let mut delta = 0;
2051 bracket_pair_state = Some(BracketPairState {
2052 ranges: selections
2053 .iter()
2054 .map(move |selection| {
2055 let offset = selection.start + delta;
2056 delta += 1;
2057 snapshot.anchor_before(offset)..snapshot.anchor_after(offset)
2058 })
2059 .collect(),
2060 pair,
2061 });
2062 }
2063 }
2064 });
2065
2066 if let Some(new_selections) = new_selections {
2067 self.update_selections(new_selections, None, cx);
2068 }
2069 if let Some(bracket_pair_state) = bracket_pair_state {
2070 self.autoclose_stack.push(bracket_pair_state);
2071 }
2072 }
2073
2074 fn skip_autoclose_end(&mut self, text: &str, cx: &mut ViewContext<Self>) -> bool {
2075 let old_selections = self.local_selections::<usize>(cx);
2076 let autoclose_pair = if let Some(autoclose_pair) = self.autoclose_stack.last() {
2077 autoclose_pair
2078 } else {
2079 return false;
2080 };
2081 if text != autoclose_pair.pair.end {
2082 return false;
2083 }
2084
2085 debug_assert_eq!(old_selections.len(), autoclose_pair.ranges.len());
2086
2087 let buffer = self.buffer.read(cx).snapshot(cx);
2088 if old_selections
2089 .iter()
2090 .zip(autoclose_pair.ranges.iter().map(|r| r.to_offset(&buffer)))
2091 .all(|(selection, autoclose_range)| {
2092 let autoclose_range_end = autoclose_range.end.to_offset(&buffer);
2093 selection.is_empty() && selection.start == autoclose_range_end
2094 })
2095 {
2096 let new_selections = old_selections
2097 .into_iter()
2098 .map(|selection| {
2099 let cursor = selection.start + 1;
2100 Selection {
2101 id: selection.id,
2102 start: cursor,
2103 end: cursor,
2104 reversed: false,
2105 goal: SelectionGoal::None,
2106 }
2107 })
2108 .collect();
2109 self.autoclose_stack.pop();
2110 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
2111 true
2112 } else {
2113 false
2114 }
2115 }
2116
2117 fn completion_query(buffer: &MultiBufferSnapshot, position: impl ToOffset) -> Option<String> {
2118 let offset = position.to_offset(buffer);
2119 let (word_range, kind) = buffer.surrounding_word(offset);
2120 if offset > word_range.start && kind == Some(CharKind::Word) {
2121 Some(
2122 buffer
2123 .text_for_range(word_range.start..offset)
2124 .collect::<String>(),
2125 )
2126 } else {
2127 None
2128 }
2129 }
2130
2131 fn show_completions(&mut self, _: &ShowCompletions, cx: &mut ViewContext<Self>) {
2132 if self.pending_rename.is_some() {
2133 return;
2134 }
2135
2136 let project = if let Some(project) = self.project.clone() {
2137 project
2138 } else {
2139 return;
2140 };
2141
2142 let position = self.newest_anchor_selection().head();
2143 let (buffer, buffer_position) = if let Some(output) = self
2144 .buffer
2145 .read(cx)
2146 .text_anchor_for_position(position.clone(), cx)
2147 {
2148 output
2149 } else {
2150 return;
2151 };
2152
2153 let query = Self::completion_query(&self.buffer.read(cx).read(cx), position.clone());
2154 let completions = project.update(cx, |project, cx| {
2155 project.completions(&buffer, buffer_position.clone(), cx)
2156 });
2157
2158 let id = post_inc(&mut self.next_completion_id);
2159 let task = cx.spawn_weak(|this, mut cx| {
2160 async move {
2161 let completions = completions.await?;
2162 if completions.is_empty() {
2163 return Ok(());
2164 }
2165
2166 let mut menu = CompletionsMenu {
2167 id,
2168 initial_position: position,
2169 match_candidates: completions
2170 .iter()
2171 .enumerate()
2172 .map(|(id, completion)| {
2173 StringMatchCandidate::new(
2174 id,
2175 completion.label.text[completion.label.filter_range.clone()].into(),
2176 )
2177 })
2178 .collect(),
2179 buffer,
2180 completions: completions.into(),
2181 matches: Vec::new().into(),
2182 selected_item: 0,
2183 list: Default::default(),
2184 };
2185
2186 menu.filter(query.as_deref(), cx.background()).await;
2187
2188 if let Some(this) = this.upgrade(&cx) {
2189 this.update(&mut cx, |this, cx| {
2190 match this.context_menu.as_ref() {
2191 None => {}
2192 Some(ContextMenu::Completions(prev_menu)) => {
2193 if prev_menu.id > menu.id {
2194 return;
2195 }
2196 }
2197 _ => return,
2198 }
2199
2200 this.completion_tasks.retain(|(id, _)| *id > menu.id);
2201 if this.focused {
2202 this.show_context_menu(ContextMenu::Completions(menu), cx);
2203 }
2204
2205 cx.notify();
2206 });
2207 }
2208 Ok::<_, anyhow::Error>(())
2209 }
2210 .log_err()
2211 });
2212 self.completion_tasks.push((id, task));
2213 }
2214
2215 pub fn confirm_completion(
2216 &mut self,
2217 ConfirmCompletion(completion_ix): &ConfirmCompletion,
2218 cx: &mut ViewContext<Self>,
2219 ) -> Option<Task<Result<()>>> {
2220 use language::ToOffset as _;
2221
2222 let completions_menu = if let ContextMenu::Completions(menu) = self.hide_context_menu(cx)? {
2223 menu
2224 } else {
2225 return None;
2226 };
2227
2228 let mat = completions_menu
2229 .matches
2230 .get(completion_ix.unwrap_or(completions_menu.selected_item))?;
2231 let buffer_handle = completions_menu.buffer;
2232 let completion = completions_menu.completions.get(mat.candidate_id)?;
2233
2234 let snippet;
2235 let text;
2236 if completion.is_snippet() {
2237 snippet = Some(Snippet::parse(&completion.new_text).log_err()?);
2238 text = snippet.as_ref().unwrap().text.clone();
2239 } else {
2240 snippet = None;
2241 text = completion.new_text.clone();
2242 };
2243 let buffer = buffer_handle.read(cx);
2244 let old_range = completion.old_range.to_offset(&buffer);
2245 let old_text = buffer.text_for_range(old_range.clone()).collect::<String>();
2246
2247 let selections = self.local_selections::<usize>(cx);
2248 let newest_selection = self.newest_anchor_selection();
2249 if newest_selection.start.buffer_id != Some(buffer_handle.id()) {
2250 return None;
2251 }
2252
2253 let lookbehind = newest_selection
2254 .start
2255 .text_anchor
2256 .to_offset(buffer)
2257 .saturating_sub(old_range.start);
2258 let lookahead = old_range
2259 .end
2260 .saturating_sub(newest_selection.end.text_anchor.to_offset(buffer));
2261 let mut common_prefix_len = old_text
2262 .bytes()
2263 .zip(text.bytes())
2264 .take_while(|(a, b)| a == b)
2265 .count();
2266
2267 let snapshot = self.buffer.read(cx).snapshot(cx);
2268 let mut ranges = Vec::new();
2269 for selection in &selections {
2270 if snapshot.contains_str_at(selection.start.saturating_sub(lookbehind), &old_text) {
2271 let start = selection.start.saturating_sub(lookbehind);
2272 let end = selection.end + lookahead;
2273 ranges.push(start + common_prefix_len..end);
2274 } else {
2275 common_prefix_len = 0;
2276 ranges.clear();
2277 ranges.extend(selections.iter().map(|s| {
2278 if s.id == newest_selection.id {
2279 old_range.clone()
2280 } else {
2281 s.start..s.end
2282 }
2283 }));
2284 break;
2285 }
2286 }
2287 let text = &text[common_prefix_len..];
2288
2289 self.start_transaction(cx);
2290 if let Some(mut snippet) = snippet {
2291 snippet.text = text.to_string();
2292 for tabstop in snippet.tabstops.iter_mut().flatten() {
2293 tabstop.start -= common_prefix_len as isize;
2294 tabstop.end -= common_prefix_len as isize;
2295 }
2296
2297 self.insert_snippet(&ranges, snippet, cx).log_err();
2298 } else {
2299 self.buffer.update(cx, |buffer, cx| {
2300 buffer.edit_with_autoindent(ranges, text, cx);
2301 });
2302 }
2303 self.end_transaction(cx);
2304
2305 let project = self.project.clone()?;
2306 let apply_edits = project.update(cx, |project, cx| {
2307 project.apply_additional_edits_for_completion(
2308 buffer_handle,
2309 completion.clone(),
2310 true,
2311 cx,
2312 )
2313 });
2314 Some(cx.foreground().spawn(async move {
2315 apply_edits.await?;
2316 Ok(())
2317 }))
2318 }
2319
2320 pub fn toggle_code_actions(
2321 &mut self,
2322 &ToggleCodeActions(deployed_from_indicator): &ToggleCodeActions,
2323 cx: &mut ViewContext<Self>,
2324 ) {
2325 if matches!(
2326 self.context_menu.as_ref(),
2327 Some(ContextMenu::CodeActions(_))
2328 ) {
2329 self.context_menu.take();
2330 cx.notify();
2331 return;
2332 }
2333
2334 let mut task = self.code_actions_task.take();
2335 cx.spawn_weak(|this, mut cx| async move {
2336 while let Some(prev_task) = task {
2337 prev_task.await;
2338 task = this
2339 .upgrade(&cx)
2340 .and_then(|this| this.update(&mut cx, |this, _| this.code_actions_task.take()));
2341 }
2342
2343 if let Some(this) = this.upgrade(&cx) {
2344 this.update(&mut cx, |this, cx| {
2345 if this.focused {
2346 if let Some((buffer, actions)) = this.available_code_actions.clone() {
2347 this.show_context_menu(
2348 ContextMenu::CodeActions(CodeActionsMenu {
2349 buffer,
2350 actions,
2351 selected_item: Default::default(),
2352 list: Default::default(),
2353 deployed_from_indicator,
2354 }),
2355 cx,
2356 );
2357 }
2358 }
2359 })
2360 }
2361 Ok::<_, anyhow::Error>(())
2362 })
2363 .detach_and_log_err(cx);
2364 }
2365
2366 pub fn confirm_code_action(
2367 workspace: &mut Workspace,
2368 ConfirmCodeAction(action_ix): &ConfirmCodeAction,
2369 cx: &mut ViewContext<Workspace>,
2370 ) -> Option<Task<Result<()>>> {
2371 let editor = workspace.active_item(cx)?.act_as::<Editor>(cx)?;
2372 let actions_menu = if let ContextMenu::CodeActions(menu) =
2373 editor.update(cx, |editor, cx| editor.hide_context_menu(cx))?
2374 {
2375 menu
2376 } else {
2377 return None;
2378 };
2379 let action_ix = action_ix.unwrap_or(actions_menu.selected_item);
2380 let action = actions_menu.actions.get(action_ix)?.clone();
2381 let title = action.lsp_action.title.clone();
2382 let buffer = actions_menu.buffer;
2383
2384 let apply_code_actions = workspace.project().clone().update(cx, |project, cx| {
2385 project.apply_code_action(buffer, action, true, cx)
2386 });
2387 Some(cx.spawn(|workspace, cx| async move {
2388 let project_transaction = apply_code_actions.await?;
2389 Self::open_project_transaction(editor, workspace, project_transaction, title, cx).await
2390 }))
2391 }
2392
2393 async fn open_project_transaction(
2394 this: ViewHandle<Editor>,
2395 workspace: ViewHandle<Workspace>,
2396 transaction: ProjectTransaction,
2397 title: String,
2398 mut cx: AsyncAppContext,
2399 ) -> Result<()> {
2400 let replica_id = this.read_with(&cx, |this, cx| this.replica_id(cx));
2401
2402 // If the code action's edits are all contained within this editor, then
2403 // avoid opening a new editor to display them.
2404 let mut entries = transaction.0.iter();
2405 if let Some((buffer, transaction)) = entries.next() {
2406 if entries.next().is_none() {
2407 let excerpt = this.read_with(&cx, |editor, cx| {
2408 editor
2409 .buffer()
2410 .read(cx)
2411 .excerpt_containing(editor.newest_anchor_selection().head(), cx)
2412 });
2413 if let Some((excerpted_buffer, excerpt_range)) = excerpt {
2414 if excerpted_buffer == *buffer {
2415 let snapshot = buffer.read_with(&cx, |buffer, _| buffer.snapshot());
2416 let excerpt_range = excerpt_range.to_offset(&snapshot);
2417 if snapshot
2418 .edited_ranges_for_transaction(transaction)
2419 .all(|range| {
2420 excerpt_range.start <= range.start && excerpt_range.end >= range.end
2421 })
2422 {
2423 return Ok(());
2424 }
2425 }
2426 }
2427 }
2428 }
2429
2430 let mut ranges_to_highlight = Vec::new();
2431 let excerpt_buffer = cx.add_model(|cx| {
2432 let mut multibuffer = MultiBuffer::new(replica_id).with_title(title);
2433 for (buffer, transaction) in &transaction.0 {
2434 let snapshot = buffer.read(cx).snapshot();
2435 ranges_to_highlight.extend(
2436 multibuffer.push_excerpts_with_context_lines(
2437 buffer.clone(),
2438 snapshot
2439 .edited_ranges_for_transaction::<usize>(transaction)
2440 .collect(),
2441 1,
2442 cx,
2443 ),
2444 );
2445 }
2446 multibuffer.push_transaction(&transaction.0);
2447 multibuffer
2448 });
2449
2450 workspace.update(&mut cx, |workspace, cx| {
2451 let project = workspace.project().clone();
2452 let editor =
2453 cx.add_view(|cx| Editor::for_multibuffer(excerpt_buffer, Some(project), cx));
2454 workspace.add_item(Box::new(editor.clone()), cx);
2455 editor.update(cx, |editor, cx| {
2456 let color = editor.style(cx).highlighted_line_background;
2457 editor.highlight_background::<Self>(ranges_to_highlight, color, cx);
2458 });
2459 });
2460
2461 Ok(())
2462 }
2463
2464 fn refresh_code_actions(&mut self, cx: &mut ViewContext<Self>) -> Option<()> {
2465 let project = self.project.as_ref()?;
2466 let buffer = self.buffer.read(cx);
2467 let newest_selection = self.newest_anchor_selection().clone();
2468 let (start_buffer, start) = buffer.text_anchor_for_position(newest_selection.start, cx)?;
2469 let (end_buffer, end) = buffer.text_anchor_for_position(newest_selection.end, cx)?;
2470 if start_buffer != end_buffer {
2471 return None;
2472 }
2473
2474 let actions = project.update(cx, |project, cx| {
2475 project.code_actions(&start_buffer, start..end, cx)
2476 });
2477 self.code_actions_task = Some(cx.spawn_weak(|this, mut cx| async move {
2478 let actions = actions.await;
2479 if let Some(this) = this.upgrade(&cx) {
2480 this.update(&mut cx, |this, cx| {
2481 this.available_code_actions = actions.log_err().and_then(|actions| {
2482 if actions.is_empty() {
2483 None
2484 } else {
2485 Some((start_buffer, actions.into()))
2486 }
2487 });
2488 cx.notify();
2489 })
2490 }
2491 }));
2492 None
2493 }
2494
2495 fn refresh_document_highlights(&mut self, cx: &mut ViewContext<Self>) -> Option<()> {
2496 if self.pending_rename.is_some() {
2497 return None;
2498 }
2499
2500 let project = self.project.as_ref()?;
2501 let buffer = self.buffer.read(cx);
2502 let newest_selection = self.newest_anchor_selection().clone();
2503 let cursor_position = newest_selection.head();
2504 let (cursor_buffer, cursor_buffer_position) =
2505 buffer.text_anchor_for_position(cursor_position.clone(), cx)?;
2506 let (tail_buffer, _) = buffer.text_anchor_for_position(newest_selection.tail(), cx)?;
2507 if cursor_buffer != tail_buffer {
2508 return None;
2509 }
2510
2511 let highlights = project.update(cx, |project, cx| {
2512 project.document_highlights(&cursor_buffer, cursor_buffer_position, cx)
2513 });
2514
2515 self.document_highlights_task = Some(cx.spawn_weak(|this, mut cx| async move {
2516 let highlights = highlights.log_err().await;
2517 if let Some((this, highlights)) = this.upgrade(&cx).zip(highlights) {
2518 this.update(&mut cx, |this, cx| {
2519 if this.pending_rename.is_some() {
2520 return;
2521 }
2522
2523 let buffer_id = cursor_position.buffer_id;
2524 let excerpt_id = cursor_position.excerpt_id.clone();
2525 let style = this.style(cx);
2526 let read_background = style.document_highlight_read_background;
2527 let write_background = style.document_highlight_write_background;
2528 let buffer = this.buffer.read(cx);
2529 if !buffer
2530 .text_anchor_for_position(cursor_position, cx)
2531 .map_or(false, |(buffer, _)| buffer == cursor_buffer)
2532 {
2533 return;
2534 }
2535
2536 let mut write_ranges = Vec::new();
2537 let mut read_ranges = Vec::new();
2538 for highlight in highlights {
2539 let range = Anchor {
2540 buffer_id,
2541 excerpt_id: excerpt_id.clone(),
2542 text_anchor: highlight.range.start,
2543 }..Anchor {
2544 buffer_id,
2545 excerpt_id: excerpt_id.clone(),
2546 text_anchor: highlight.range.end,
2547 };
2548 if highlight.kind == lsp::DocumentHighlightKind::WRITE {
2549 write_ranges.push(range);
2550 } else {
2551 read_ranges.push(range);
2552 }
2553 }
2554
2555 this.highlight_background::<DocumentHighlightRead>(
2556 read_ranges,
2557 read_background,
2558 cx,
2559 );
2560 this.highlight_background::<DocumentHighlightWrite>(
2561 write_ranges,
2562 write_background,
2563 cx,
2564 );
2565 cx.notify();
2566 });
2567 }
2568 }));
2569 None
2570 }
2571
2572 pub fn render_code_actions_indicator(
2573 &self,
2574 style: &EditorStyle,
2575 cx: &mut ViewContext<Self>,
2576 ) -> Option<ElementBox> {
2577 if self.available_code_actions.is_some() {
2578 enum Tag {}
2579 Some(
2580 MouseEventHandler::new::<Tag, _, _>(0, cx, |_, _| {
2581 Svg::new("icons/zap.svg")
2582 .with_color(style.code_actions_indicator)
2583 .boxed()
2584 })
2585 .with_cursor_style(CursorStyle::PointingHand)
2586 .with_padding(Padding::uniform(3.))
2587 .on_mouse_down(|cx| {
2588 cx.dispatch_action(ToggleCodeActions(true));
2589 })
2590 .boxed(),
2591 )
2592 } else {
2593 None
2594 }
2595 }
2596
2597 pub fn context_menu_visible(&self) -> bool {
2598 self.context_menu
2599 .as_ref()
2600 .map_or(false, |menu| menu.visible())
2601 }
2602
2603 pub fn render_context_menu(
2604 &self,
2605 cursor_position: DisplayPoint,
2606 style: EditorStyle,
2607 cx: &AppContext,
2608 ) -> Option<(DisplayPoint, ElementBox)> {
2609 self.context_menu
2610 .as_ref()
2611 .map(|menu| menu.render(cursor_position, style, cx))
2612 }
2613
2614 fn show_context_menu(&mut self, menu: ContextMenu, cx: &mut ViewContext<Self>) {
2615 if !matches!(menu, ContextMenu::Completions(_)) {
2616 self.completion_tasks.clear();
2617 }
2618 self.context_menu = Some(menu);
2619 cx.notify();
2620 }
2621
2622 fn hide_context_menu(&mut self, cx: &mut ViewContext<Self>) -> Option<ContextMenu> {
2623 cx.notify();
2624 self.completion_tasks.clear();
2625 self.context_menu.take()
2626 }
2627
2628 pub fn insert_snippet(
2629 &mut self,
2630 insertion_ranges: &[Range<usize>],
2631 snippet: Snippet,
2632 cx: &mut ViewContext<Self>,
2633 ) -> Result<()> {
2634 let tabstops = self.buffer.update(cx, |buffer, cx| {
2635 buffer.edit_with_autoindent(insertion_ranges.iter().cloned(), &snippet.text, cx);
2636
2637 let snapshot = &*buffer.read(cx);
2638 let snippet = &snippet;
2639 snippet
2640 .tabstops
2641 .iter()
2642 .map(|tabstop| {
2643 let mut tabstop_ranges = tabstop
2644 .iter()
2645 .flat_map(|tabstop_range| {
2646 let mut delta = 0 as isize;
2647 insertion_ranges.iter().map(move |insertion_range| {
2648 let insertion_start = insertion_range.start as isize + delta;
2649 delta +=
2650 snippet.text.len() as isize - insertion_range.len() as isize;
2651
2652 let start = snapshot.anchor_before(
2653 (insertion_start + tabstop_range.start) as usize,
2654 );
2655 let end = snapshot
2656 .anchor_after((insertion_start + tabstop_range.end) as usize);
2657 start..end
2658 })
2659 })
2660 .collect::<Vec<_>>();
2661 tabstop_ranges
2662 .sort_unstable_by(|a, b| a.start.cmp(&b.start, snapshot).unwrap());
2663 tabstop_ranges
2664 })
2665 .collect::<Vec<_>>()
2666 });
2667
2668 if let Some(tabstop) = tabstops.first() {
2669 self.select_ranges(tabstop.iter().cloned(), Some(Autoscroll::Fit), cx);
2670 self.snippet_stack.push(SnippetState {
2671 active_index: 0,
2672 ranges: tabstops,
2673 });
2674 }
2675
2676 Ok(())
2677 }
2678
2679 pub fn move_to_next_snippet_tabstop(&mut self, cx: &mut ViewContext<Self>) -> bool {
2680 self.move_to_snippet_tabstop(Bias::Right, cx)
2681 }
2682
2683 pub fn move_to_prev_snippet_tabstop(&mut self, cx: &mut ViewContext<Self>) {
2684 self.move_to_snippet_tabstop(Bias::Left, cx);
2685 }
2686
2687 pub fn move_to_snippet_tabstop(&mut self, bias: Bias, cx: &mut ViewContext<Self>) -> bool {
2688 let buffer = self.buffer.read(cx).snapshot(cx);
2689
2690 if let Some(snippet) = self.snippet_stack.last_mut() {
2691 match bias {
2692 Bias::Left => {
2693 if snippet.active_index > 0 {
2694 snippet.active_index -= 1;
2695 } else {
2696 return false;
2697 }
2698 }
2699 Bias::Right => {
2700 if snippet.active_index + 1 < snippet.ranges.len() {
2701 snippet.active_index += 1;
2702 } else {
2703 return false;
2704 }
2705 }
2706 }
2707 if let Some(current_ranges) = snippet.ranges.get(snippet.active_index) {
2708 let new_selections = current_ranges
2709 .iter()
2710 .map(|new_range| {
2711 let new_range = new_range.to_offset(&buffer);
2712 Selection {
2713 id: post_inc(&mut self.next_selection_id),
2714 start: new_range.start,
2715 end: new_range.end,
2716 reversed: false,
2717 goal: SelectionGoal::None,
2718 }
2719 })
2720 .collect();
2721
2722 // Remove the snippet state when moving to the last tabstop.
2723 if snippet.active_index + 1 == snippet.ranges.len() {
2724 self.snippet_stack.pop();
2725 }
2726
2727 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
2728 return true;
2729 }
2730 self.snippet_stack.pop();
2731 }
2732
2733 false
2734 }
2735
2736 pub fn clear(&mut self, cx: &mut ViewContext<Self>) {
2737 self.start_transaction(cx);
2738 self.select_all(&SelectAll, cx);
2739 self.insert("", cx);
2740 self.end_transaction(cx);
2741 }
2742
2743 pub fn backspace(&mut self, _: &Backspace, cx: &mut ViewContext<Self>) {
2744 self.start_transaction(cx);
2745 let mut selections = self.local_selections::<Point>(cx);
2746 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2747 for selection in &mut selections {
2748 if selection.is_empty() {
2749 let old_head = selection.head();
2750 let mut new_head =
2751 movement::left(&display_map, old_head.to_display_point(&display_map))
2752 .to_point(&display_map);
2753 if let Some((buffer, line_buffer_range)) = display_map
2754 .buffer_snapshot
2755 .buffer_line_for_row(old_head.row)
2756 {
2757 let indent_column = buffer.indent_column_for_line(line_buffer_range.start.row);
2758 if old_head.column <= indent_column && old_head.column > 0 {
2759 let indent = buffer.indent_size();
2760 new_head = cmp::min(
2761 new_head,
2762 Point::new(old_head.row, ((old_head.column - 1) / indent) * indent),
2763 );
2764 }
2765 }
2766
2767 selection.set_head(new_head, SelectionGoal::None);
2768 }
2769 }
2770 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2771 self.insert("", cx);
2772 self.end_transaction(cx);
2773 }
2774
2775 pub fn delete(&mut self, _: &Delete, cx: &mut ViewContext<Self>) {
2776 self.transact(cx, |this, cx| {
2777 this.move_selections(cx, |map, selection| {
2778 if selection.is_empty() {
2779 let cursor = movement::right(map, selection.head());
2780 selection.set_head(cursor, SelectionGoal::None);
2781 }
2782 });
2783 this.insert(&"", cx);
2784 });
2785 }
2786
2787 pub fn tab(&mut self, _: &Tab, cx: &mut ViewContext<Self>) {
2788 if self.move_to_next_snippet_tabstop(cx) {
2789 return;
2790 }
2791
2792 self.start_transaction(cx);
2793 let tab_size = cx.global::<Settings>().tab_size;
2794 let mut selections = self.local_selections::<Point>(cx);
2795 let mut last_indent = None;
2796 self.buffer.update(cx, |buffer, cx| {
2797 for selection in &mut selections {
2798 if selection.is_empty() {
2799 let char_column = buffer
2800 .read(cx)
2801 .text_for_range(Point::new(selection.start.row, 0)..selection.start)
2802 .flat_map(str::chars)
2803 .count();
2804 let chars_to_next_tab_stop = tab_size - (char_column % tab_size);
2805 buffer.edit(
2806 [selection.start..selection.start],
2807 " ".repeat(chars_to_next_tab_stop),
2808 cx,
2809 );
2810 selection.start.column += chars_to_next_tab_stop as u32;
2811 selection.end = selection.start;
2812 } else {
2813 let mut start_row = selection.start.row;
2814 let mut end_row = selection.end.row + 1;
2815
2816 // If a selection ends at the beginning of a line, don't indent
2817 // that last line.
2818 if selection.end.column == 0 {
2819 end_row -= 1;
2820 }
2821
2822 // Avoid re-indenting a row that has already been indented by a
2823 // previous selection, but still update this selection's column
2824 // to reflect that indentation.
2825 if let Some((last_indent_row, last_indent_len)) = last_indent {
2826 if last_indent_row == selection.start.row {
2827 selection.start.column += last_indent_len;
2828 start_row += 1;
2829 }
2830 if last_indent_row == selection.end.row {
2831 selection.end.column += last_indent_len;
2832 }
2833 }
2834
2835 for row in start_row..end_row {
2836 let indent_column = buffer.read(cx).indent_column_for_line(row) as usize;
2837 let columns_to_next_tab_stop = tab_size - (indent_column % tab_size);
2838 let row_start = Point::new(row, 0);
2839 buffer.edit(
2840 [row_start..row_start],
2841 " ".repeat(columns_to_next_tab_stop),
2842 cx,
2843 );
2844
2845 // Update this selection's endpoints to reflect the indentation.
2846 if row == selection.start.row {
2847 selection.start.column += columns_to_next_tab_stop as u32;
2848 }
2849 if row == selection.end.row {
2850 selection.end.column += columns_to_next_tab_stop as u32;
2851 }
2852
2853 last_indent = Some((row, columns_to_next_tab_stop as u32));
2854 }
2855 }
2856 }
2857 });
2858
2859 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2860 self.end_transaction(cx);
2861 }
2862
2863 pub fn outdent(&mut self, _: &Outdent, cx: &mut ViewContext<Self>) {
2864 if !self.snippet_stack.is_empty() {
2865 self.move_to_prev_snippet_tabstop(cx);
2866 return;
2867 }
2868
2869 self.start_transaction(cx);
2870 let tab_size = cx.global::<Settings>().tab_size;
2871 let selections = self.local_selections::<Point>(cx);
2872 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2873 let mut deletion_ranges = Vec::new();
2874 let mut last_outdent = None;
2875 {
2876 let buffer = self.buffer.read(cx).read(cx);
2877 for selection in &selections {
2878 let mut rows = selection.spanned_rows(false, &display_map);
2879
2880 // Avoid re-outdenting a row that has already been outdented by a
2881 // previous selection.
2882 if let Some(last_row) = last_outdent {
2883 if last_row == rows.start {
2884 rows.start += 1;
2885 }
2886 }
2887
2888 for row in rows {
2889 let column = buffer.indent_column_for_line(row) as usize;
2890 if column > 0 {
2891 let mut deletion_len = (column % tab_size) as u32;
2892 if deletion_len == 0 {
2893 deletion_len = tab_size as u32;
2894 }
2895 deletion_ranges.push(Point::new(row, 0)..Point::new(row, deletion_len));
2896 last_outdent = Some(row);
2897 }
2898 }
2899 }
2900 }
2901 self.buffer.update(cx, |buffer, cx| {
2902 buffer.edit(deletion_ranges, "", cx);
2903 });
2904
2905 self.update_selections(
2906 self.local_selections::<usize>(cx),
2907 Some(Autoscroll::Fit),
2908 cx,
2909 );
2910 self.end_transaction(cx);
2911 }
2912
2913 pub fn delete_line(&mut self, _: &DeleteLine, cx: &mut ViewContext<Self>) {
2914 self.start_transaction(cx);
2915
2916 let selections = self.local_selections::<Point>(cx);
2917 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2918 let buffer = self.buffer.read(cx).snapshot(cx);
2919
2920 let mut new_cursors = Vec::new();
2921 let mut edit_ranges = Vec::new();
2922 let mut selections = selections.iter().peekable();
2923 while let Some(selection) = selections.next() {
2924 let mut rows = selection.spanned_rows(false, &display_map);
2925 let goal_display_column = selection.head().to_display_point(&display_map).column();
2926
2927 // Accumulate contiguous regions of rows that we want to delete.
2928 while let Some(next_selection) = selections.peek() {
2929 let next_rows = next_selection.spanned_rows(false, &display_map);
2930 if next_rows.start <= rows.end {
2931 rows.end = next_rows.end;
2932 selections.next().unwrap();
2933 } else {
2934 break;
2935 }
2936 }
2937
2938 let mut edit_start = Point::new(rows.start, 0).to_offset(&buffer);
2939 let edit_end;
2940 let cursor_buffer_row;
2941 if buffer.max_point().row >= rows.end {
2942 // If there's a line after the range, delete the \n from the end of the row range
2943 // and position the cursor on the next line.
2944 edit_end = Point::new(rows.end, 0).to_offset(&buffer);
2945 cursor_buffer_row = rows.end;
2946 } else {
2947 // If there isn't a line after the range, delete the \n from the line before the
2948 // start of the row range and position the cursor there.
2949 edit_start = edit_start.saturating_sub(1);
2950 edit_end = buffer.len();
2951 cursor_buffer_row = rows.start.saturating_sub(1);
2952 }
2953
2954 let mut cursor = Point::new(cursor_buffer_row, 0).to_display_point(&display_map);
2955 *cursor.column_mut() =
2956 cmp::min(goal_display_column, display_map.line_len(cursor.row()));
2957
2958 new_cursors.push((
2959 selection.id,
2960 buffer.anchor_after(cursor.to_point(&display_map)),
2961 ));
2962 edit_ranges.push(edit_start..edit_end);
2963 }
2964
2965 let buffer = self.buffer.update(cx, |buffer, cx| {
2966 buffer.edit(edit_ranges, "", cx);
2967 buffer.snapshot(cx)
2968 });
2969 let new_selections = new_cursors
2970 .into_iter()
2971 .map(|(id, cursor)| {
2972 let cursor = cursor.to_point(&buffer);
2973 Selection {
2974 id,
2975 start: cursor,
2976 end: cursor,
2977 reversed: false,
2978 goal: SelectionGoal::None,
2979 }
2980 })
2981 .collect();
2982 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
2983 self.end_transaction(cx);
2984 }
2985
2986 pub fn duplicate_line(&mut self, _: &DuplicateLine, cx: &mut ViewContext<Self>) {
2987 self.start_transaction(cx);
2988
2989 let selections = self.local_selections::<Point>(cx);
2990 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2991 let buffer = &display_map.buffer_snapshot;
2992
2993 let mut edits = Vec::new();
2994 let mut selections_iter = selections.iter().peekable();
2995 while let Some(selection) = selections_iter.next() {
2996 // Avoid duplicating the same lines twice.
2997 let mut rows = selection.spanned_rows(false, &display_map);
2998
2999 while let Some(next_selection) = selections_iter.peek() {
3000 let next_rows = next_selection.spanned_rows(false, &display_map);
3001 if next_rows.start <= rows.end - 1 {
3002 rows.end = next_rows.end;
3003 selections_iter.next().unwrap();
3004 } else {
3005 break;
3006 }
3007 }
3008
3009 // Copy the text from the selected row region and splice it at the start of the region.
3010 let start = Point::new(rows.start, 0);
3011 let end = Point::new(rows.end - 1, buffer.line_len(rows.end - 1));
3012 let text = buffer
3013 .text_for_range(start..end)
3014 .chain(Some("\n"))
3015 .collect::<String>();
3016 edits.push((start, text, rows.len() as u32));
3017 }
3018
3019 self.buffer.update(cx, |buffer, cx| {
3020 for (point, text, _) in edits.into_iter().rev() {
3021 buffer.edit(Some(point..point), text, cx);
3022 }
3023 });
3024
3025 self.request_autoscroll(Autoscroll::Fit, cx);
3026 self.end_transaction(cx);
3027 }
3028
3029 pub fn move_line_up(&mut self, _: &MoveLineUp, cx: &mut ViewContext<Self>) {
3030 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3031 let buffer = self.buffer.read(cx).snapshot(cx);
3032
3033 let mut edits = Vec::new();
3034 let mut unfold_ranges = Vec::new();
3035 let mut refold_ranges = Vec::new();
3036
3037 let selections = self.local_selections::<Point>(cx);
3038 let mut selections = selections.iter().peekable();
3039 let mut contiguous_row_selections = Vec::new();
3040 let mut new_selections = Vec::new();
3041
3042 while let Some(selection) = selections.next() {
3043 // Find all the selections that span a contiguous row range
3044 contiguous_row_selections.push(selection.clone());
3045 let start_row = selection.start.row;
3046 let mut end_row = if selection.end.column > 0 || selection.is_empty() {
3047 display_map.next_line_boundary(selection.end).0.row + 1
3048 } else {
3049 selection.end.row
3050 };
3051
3052 while let Some(next_selection) = selections.peek() {
3053 if next_selection.start.row <= end_row {
3054 end_row = if next_selection.end.column > 0 || next_selection.is_empty() {
3055 display_map.next_line_boundary(next_selection.end).0.row + 1
3056 } else {
3057 next_selection.end.row
3058 };
3059 contiguous_row_selections.push(selections.next().unwrap().clone());
3060 } else {
3061 break;
3062 }
3063 }
3064
3065 // Move the text spanned by the row range to be before the line preceding the row range
3066 if start_row > 0 {
3067 let range_to_move = Point::new(start_row - 1, buffer.line_len(start_row - 1))
3068 ..Point::new(end_row - 1, buffer.line_len(end_row - 1));
3069 let insertion_point = display_map
3070 .prev_line_boundary(Point::new(start_row - 1, 0))
3071 .0;
3072
3073 // Don't move lines across excerpts
3074 if buffer
3075 .excerpt_boundaries_in_range((
3076 Bound::Excluded(insertion_point),
3077 Bound::Included(range_to_move.end),
3078 ))
3079 .next()
3080 .is_none()
3081 {
3082 let text = buffer
3083 .text_for_range(range_to_move.clone())
3084 .flat_map(|s| s.chars())
3085 .skip(1)
3086 .chain(['\n'])
3087 .collect::<String>();
3088
3089 edits.push((
3090 buffer.anchor_after(range_to_move.start)
3091 ..buffer.anchor_before(range_to_move.end),
3092 String::new(),
3093 ));
3094 let insertion_anchor = buffer.anchor_after(insertion_point);
3095 edits.push((insertion_anchor.clone()..insertion_anchor, text));
3096
3097 let row_delta = range_to_move.start.row - insertion_point.row + 1;
3098
3099 // Move selections up
3100 new_selections.extend(contiguous_row_selections.drain(..).map(
3101 |mut selection| {
3102 selection.start.row -= row_delta;
3103 selection.end.row -= row_delta;
3104 selection
3105 },
3106 ));
3107
3108 // Move folds up
3109 unfold_ranges.push(range_to_move.clone());
3110 for fold in display_map.folds_in_range(
3111 buffer.anchor_before(range_to_move.start)
3112 ..buffer.anchor_after(range_to_move.end),
3113 ) {
3114 let mut start = fold.start.to_point(&buffer);
3115 let mut end = fold.end.to_point(&buffer);
3116 start.row -= row_delta;
3117 end.row -= row_delta;
3118 refold_ranges.push(start..end);
3119 }
3120 }
3121 }
3122
3123 // If we didn't move line(s), preserve the existing selections
3124 new_selections.extend(contiguous_row_selections.drain(..));
3125 }
3126
3127 self.start_transaction(cx);
3128 self.unfold_ranges(unfold_ranges, cx);
3129 self.buffer.update(cx, |buffer, cx| {
3130 for (range, text) in edits {
3131 buffer.edit([range], text, cx);
3132 }
3133 });
3134 self.fold_ranges(refold_ranges, cx);
3135 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
3136 self.end_transaction(cx);
3137 }
3138
3139 pub fn move_line_down(&mut self, _: &MoveLineDown, cx: &mut ViewContext<Self>) {
3140 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3141 let buffer = self.buffer.read(cx).snapshot(cx);
3142
3143 let mut edits = Vec::new();
3144 let mut unfold_ranges = Vec::new();
3145 let mut refold_ranges = Vec::new();
3146
3147 let selections = self.local_selections::<Point>(cx);
3148 let mut selections = selections.iter().peekable();
3149 let mut contiguous_row_selections = Vec::new();
3150 let mut new_selections = Vec::new();
3151
3152 while let Some(selection) = selections.next() {
3153 // Find all the selections that span a contiguous row range
3154 contiguous_row_selections.push(selection.clone());
3155 let start_row = selection.start.row;
3156 let mut end_row = if selection.end.column > 0 || selection.is_empty() {
3157 display_map.next_line_boundary(selection.end).0.row + 1
3158 } else {
3159 selection.end.row
3160 };
3161
3162 while let Some(next_selection) = selections.peek() {
3163 if next_selection.start.row <= end_row {
3164 end_row = if next_selection.end.column > 0 || next_selection.is_empty() {
3165 display_map.next_line_boundary(next_selection.end).0.row + 1
3166 } else {
3167 next_selection.end.row
3168 };
3169 contiguous_row_selections.push(selections.next().unwrap().clone());
3170 } else {
3171 break;
3172 }
3173 }
3174
3175 // Move the text spanned by the row range to be after the last line of the row range
3176 if end_row <= buffer.max_point().row {
3177 let range_to_move = Point::new(start_row, 0)..Point::new(end_row, 0);
3178 let insertion_point = display_map.next_line_boundary(Point::new(end_row, 0)).0;
3179
3180 // Don't move lines across excerpt boundaries
3181 if buffer
3182 .excerpt_boundaries_in_range((
3183 Bound::Excluded(range_to_move.start),
3184 Bound::Included(insertion_point),
3185 ))
3186 .next()
3187 .is_none()
3188 {
3189 let mut text = String::from("\n");
3190 text.extend(buffer.text_for_range(range_to_move.clone()));
3191 text.pop(); // Drop trailing newline
3192 edits.push((
3193 buffer.anchor_after(range_to_move.start)
3194 ..buffer.anchor_before(range_to_move.end),
3195 String::new(),
3196 ));
3197 let insertion_anchor = buffer.anchor_after(insertion_point);
3198 edits.push((insertion_anchor.clone()..insertion_anchor, text));
3199
3200 let row_delta = insertion_point.row - range_to_move.end.row + 1;
3201
3202 // Move selections down
3203 new_selections.extend(contiguous_row_selections.drain(..).map(
3204 |mut selection| {
3205 selection.start.row += row_delta;
3206 selection.end.row += row_delta;
3207 selection
3208 },
3209 ));
3210
3211 // Move folds down
3212 unfold_ranges.push(range_to_move.clone());
3213 for fold in display_map.folds_in_range(
3214 buffer.anchor_before(range_to_move.start)
3215 ..buffer.anchor_after(range_to_move.end),
3216 ) {
3217 let mut start = fold.start.to_point(&buffer);
3218 let mut end = fold.end.to_point(&buffer);
3219 start.row += row_delta;
3220 end.row += row_delta;
3221 refold_ranges.push(start..end);
3222 }
3223 }
3224 }
3225
3226 // If we didn't move line(s), preserve the existing selections
3227 new_selections.extend(contiguous_row_selections.drain(..));
3228 }
3229
3230 self.start_transaction(cx);
3231 self.unfold_ranges(unfold_ranges, cx);
3232 self.buffer.update(cx, |buffer, cx| {
3233 for (range, text) in edits {
3234 buffer.edit([range], text, cx);
3235 }
3236 });
3237 self.fold_ranges(refold_ranges, cx);
3238 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
3239 self.end_transaction(cx);
3240 }
3241
3242 pub fn cut(&mut self, _: &Cut, cx: &mut ViewContext<Self>) {
3243 self.start_transaction(cx);
3244 let mut text = String::new();
3245 let mut selections = self.local_selections::<Point>(cx);
3246 let mut clipboard_selections = Vec::with_capacity(selections.len());
3247 {
3248 let buffer = self.buffer.read(cx).read(cx);
3249 let max_point = buffer.max_point();
3250 for selection in &mut selections {
3251 let is_entire_line = selection.is_empty();
3252 if is_entire_line {
3253 selection.start = Point::new(selection.start.row, 0);
3254 selection.end = cmp::min(max_point, Point::new(selection.end.row + 1, 0));
3255 selection.goal = SelectionGoal::None;
3256 }
3257 let mut len = 0;
3258 for chunk in buffer.text_for_range(selection.start..selection.end) {
3259 text.push_str(chunk);
3260 len += chunk.len();
3261 }
3262 clipboard_selections.push(ClipboardSelection {
3263 len,
3264 is_entire_line,
3265 });
3266 }
3267 }
3268 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3269 self.insert("", cx);
3270 self.end_transaction(cx);
3271
3272 cx.as_mut()
3273 .write_to_clipboard(ClipboardItem::new(text).with_metadata(clipboard_selections));
3274 }
3275
3276 pub fn copy(&mut self, _: &Copy, cx: &mut ViewContext<Self>) {
3277 let selections = self.local_selections::<Point>(cx);
3278 let mut text = String::new();
3279 let mut clipboard_selections = Vec::with_capacity(selections.len());
3280 {
3281 let buffer = self.buffer.read(cx).read(cx);
3282 let max_point = buffer.max_point();
3283 for selection in selections.iter() {
3284 let mut start = selection.start;
3285 let mut end = selection.end;
3286 let is_entire_line = selection.is_empty();
3287 if is_entire_line {
3288 start = Point::new(start.row, 0);
3289 end = cmp::min(max_point, Point::new(start.row + 1, 0));
3290 }
3291 let mut len = 0;
3292 for chunk in buffer.text_for_range(start..end) {
3293 text.push_str(chunk);
3294 len += chunk.len();
3295 }
3296 clipboard_selections.push(ClipboardSelection {
3297 len,
3298 is_entire_line,
3299 });
3300 }
3301 }
3302
3303 cx.as_mut()
3304 .write_to_clipboard(ClipboardItem::new(text).with_metadata(clipboard_selections));
3305 }
3306
3307 pub fn paste(&mut self, _: &Paste, cx: &mut ViewContext<Self>) {
3308 if let Some(item) = cx.as_mut().read_from_clipboard() {
3309 let clipboard_text = item.text();
3310 if let Some(mut clipboard_selections) = item.metadata::<Vec<ClipboardSelection>>() {
3311 let mut selections = self.local_selections::<usize>(cx);
3312 let all_selections_were_entire_line =
3313 clipboard_selections.iter().all(|s| s.is_entire_line);
3314 if clipboard_selections.len() != selections.len() {
3315 clipboard_selections.clear();
3316 }
3317
3318 let mut delta = 0_isize;
3319 let mut start_offset = 0;
3320 for (i, selection) in selections.iter_mut().enumerate() {
3321 let to_insert;
3322 let entire_line;
3323 if let Some(clipboard_selection) = clipboard_selections.get(i) {
3324 let end_offset = start_offset + clipboard_selection.len;
3325 to_insert = &clipboard_text[start_offset..end_offset];
3326 entire_line = clipboard_selection.is_entire_line;
3327 start_offset = end_offset
3328 } else {
3329 to_insert = clipboard_text.as_str();
3330 entire_line = all_selections_were_entire_line;
3331 }
3332
3333 selection.start = (selection.start as isize + delta) as usize;
3334 selection.end = (selection.end as isize + delta) as usize;
3335
3336 self.buffer.update(cx, |buffer, cx| {
3337 // If the corresponding selection was empty when this slice of the
3338 // clipboard text was written, then the entire line containing the
3339 // selection was copied. If this selection is also currently empty,
3340 // then paste the line before the current line of the buffer.
3341 let range = if selection.is_empty() && entire_line {
3342 let column = selection.start.to_point(&buffer.read(cx)).column as usize;
3343 let line_start = selection.start - column;
3344 line_start..line_start
3345 } else {
3346 selection.start..selection.end
3347 };
3348
3349 delta += to_insert.len() as isize - range.len() as isize;
3350 buffer.edit([range], to_insert, cx);
3351 selection.start += to_insert.len();
3352 selection.end = selection.start;
3353 });
3354 }
3355 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3356 } else {
3357 self.insert(clipboard_text, cx);
3358 }
3359 }
3360 }
3361
3362 pub fn undo(&mut self, _: &Undo, cx: &mut ViewContext<Self>) {
3363 if let Some(tx_id) = self.buffer.update(cx, |buffer, cx| buffer.undo(cx)) {
3364 if let Some((selections, _)) = self.selection_history.get(&tx_id).cloned() {
3365 self.set_selections(selections, None, true, cx);
3366 }
3367 self.request_autoscroll(Autoscroll::Fit, cx);
3368 }
3369 }
3370
3371 pub fn redo(&mut self, _: &Redo, cx: &mut ViewContext<Self>) {
3372 if let Some(tx_id) = self.buffer.update(cx, |buffer, cx| buffer.redo(cx)) {
3373 if let Some((_, Some(selections))) = self.selection_history.get(&tx_id).cloned() {
3374 self.set_selections(selections, None, true, cx);
3375 }
3376 self.request_autoscroll(Autoscroll::Fit, cx);
3377 }
3378 }
3379
3380 pub fn finalize_last_transaction(&mut self, cx: &mut ViewContext<Self>) {
3381 self.buffer
3382 .update(cx, |buffer, cx| buffer.finalize_last_transaction(cx));
3383 }
3384
3385 pub fn move_left(&mut self, _: &MoveLeft, cx: &mut ViewContext<Self>) {
3386 self.move_selections(cx, |map, selection| {
3387 let cursor = if selection.is_empty() {
3388 movement::left(map, selection.start)
3389 } else {
3390 selection.start
3391 };
3392 selection.collapse_to(cursor, SelectionGoal::None);
3393 });
3394 }
3395
3396 pub fn select_left(&mut self, _: &SelectLeft, cx: &mut ViewContext<Self>) {
3397 self.move_selection_heads(cx, |map, head, _| {
3398 (movement::left(map, head), SelectionGoal::None)
3399 });
3400 }
3401
3402 pub fn move_right(&mut self, _: &MoveRight, cx: &mut ViewContext<Self>) {
3403 self.move_selections(cx, |map, selection| {
3404 let cursor = if selection.is_empty() {
3405 movement::right(map, selection.end)
3406 } else {
3407 selection.end
3408 };
3409 selection.collapse_to(cursor, SelectionGoal::None)
3410 });
3411 }
3412
3413 pub fn select_right(&mut self, _: &SelectRight, cx: &mut ViewContext<Self>) {
3414 self.move_selection_heads(cx, |map, head, _| {
3415 (movement::right(map, head), SelectionGoal::None)
3416 });
3417 }
3418
3419 pub fn move_up(&mut self, _: &MoveUp, cx: &mut ViewContext<Self>) {
3420 if self.take_rename(true, cx).is_some() {
3421 return;
3422 }
3423
3424 if let Some(context_menu) = self.context_menu.as_mut() {
3425 if context_menu.select_prev(cx) {
3426 return;
3427 }
3428 }
3429
3430 if matches!(self.mode, EditorMode::SingleLine) {
3431 cx.propagate_action();
3432 return;
3433 }
3434
3435 self.move_selections(cx, |map, selection| {
3436 if !selection.is_empty() {
3437 selection.goal = SelectionGoal::None;
3438 }
3439 let (cursor, goal) = movement::up(&map, selection.start, selection.goal);
3440 selection.collapse_to(cursor, goal);
3441 });
3442 }
3443
3444 pub fn select_up(&mut self, _: &SelectUp, cx: &mut ViewContext<Self>) {
3445 self.move_selection_heads(cx, movement::up)
3446 }
3447
3448 pub fn move_down(&mut self, _: &MoveDown, cx: &mut ViewContext<Self>) {
3449 self.take_rename(true, cx);
3450
3451 if let Some(context_menu) = self.context_menu.as_mut() {
3452 if context_menu.select_next(cx) {
3453 return;
3454 }
3455 }
3456
3457 if matches!(self.mode, EditorMode::SingleLine) {
3458 cx.propagate_action();
3459 return;
3460 }
3461
3462 self.move_selections(cx, |map, selection| {
3463 if !selection.is_empty() {
3464 selection.goal = SelectionGoal::None;
3465 }
3466 let (cursor, goal) = movement::down(&map, selection.end, selection.goal);
3467 selection.collapse_to(cursor, goal);
3468 });
3469 }
3470
3471 pub fn select_down(&mut self, _: &SelectDown, cx: &mut ViewContext<Self>) {
3472 self.move_selection_heads(cx, movement::down)
3473 }
3474
3475 pub fn move_to_previous_word_start(
3476 &mut self,
3477 _: &MoveToPreviousWordStart,
3478 cx: &mut ViewContext<Self>,
3479 ) {
3480 self.move_cursors(cx, |map, head, _| {
3481 (
3482 movement::previous_word_start(map, head),
3483 SelectionGoal::None,
3484 )
3485 });
3486 }
3487
3488 pub fn select_to_previous_word_start(
3489 &mut self,
3490 _: &SelectToPreviousWordBoundary,
3491 cx: &mut ViewContext<Self>,
3492 ) {
3493 self.move_selection_heads(cx, |map, head, _| {
3494 (
3495 movement::previous_word_start(map, head),
3496 SelectionGoal::None,
3497 )
3498 });
3499 }
3500
3501 pub fn delete_to_previous_word_start(
3502 &mut self,
3503 _: &DeleteToPreviousWordBoundary,
3504 cx: &mut ViewContext<Self>,
3505 ) {
3506 self.transact(cx, |this, cx| {
3507 this.move_selections(cx, |map, selection| {
3508 if selection.is_empty() {
3509 let cursor = movement::previous_word_start(map, selection.head());
3510 selection.set_head(cursor, SelectionGoal::None);
3511 }
3512 });
3513 this.insert("", cx);
3514 });
3515 }
3516
3517 pub fn move_to_next_word_end(&mut self, _: &MoveToNextWordEnd, cx: &mut ViewContext<Self>) {
3518 self.move_cursors(cx, |map, head, _| {
3519 (movement::next_word_end(map, head), SelectionGoal::None)
3520 });
3521 }
3522
3523 pub fn select_to_next_word_end(
3524 &mut self,
3525 _: &SelectToNextWordBoundary,
3526 cx: &mut ViewContext<Self>,
3527 ) {
3528 self.move_selection_heads(cx, |map, head, _| {
3529 (movement::next_word_end(map, head), SelectionGoal::None)
3530 });
3531 }
3532
3533 pub fn delete_to_next_word_end(
3534 &mut self,
3535 _: &DeleteToNextWordBoundary,
3536 cx: &mut ViewContext<Self>,
3537 ) {
3538 self.transact(cx, |this, cx| {
3539 this.move_selections(cx, |map, selection| {
3540 if selection.is_empty() {
3541 let cursor = movement::next_word_end(map, selection.head());
3542 selection.set_head(cursor, SelectionGoal::None);
3543 }
3544 });
3545 this.insert("", cx);
3546 });
3547 }
3548
3549 pub fn move_to_beginning_of_line(
3550 &mut self,
3551 _: &MoveToBeginningOfLine,
3552 cx: &mut ViewContext<Self>,
3553 ) {
3554 self.move_cursors(cx, |map, head, _| {
3555 (
3556 movement::line_beginning(map, head, true),
3557 SelectionGoal::None,
3558 )
3559 });
3560 }
3561
3562 pub fn select_to_beginning_of_line(
3563 &mut self,
3564 SelectToBeginningOfLine(stop_at_soft_boundaries): &SelectToBeginningOfLine,
3565 cx: &mut ViewContext<Self>,
3566 ) {
3567 self.move_selection_heads(cx, |map, head, _| {
3568 (
3569 movement::line_beginning(map, head, *stop_at_soft_boundaries),
3570 SelectionGoal::None,
3571 )
3572 });
3573 }
3574
3575 pub fn delete_to_beginning_of_line(
3576 &mut self,
3577 _: &DeleteToBeginningOfLine,
3578 cx: &mut ViewContext<Self>,
3579 ) {
3580 self.transact(cx, |this, cx| {
3581 this.select_to_beginning_of_line(&SelectToBeginningOfLine(false), cx);
3582 this.backspace(&Backspace, cx);
3583 });
3584 }
3585
3586 pub fn move_to_end_of_line(&mut self, _: &MoveToEndOfLine, cx: &mut ViewContext<Self>) {
3587 self.move_cursors(cx, |map, head, _| {
3588 (movement::line_end(map, head, true), SelectionGoal::None)
3589 });
3590 }
3591
3592 pub fn select_to_end_of_line(
3593 &mut self,
3594 SelectToEndOfLine(stop_at_soft_boundaries): &SelectToEndOfLine,
3595 cx: &mut ViewContext<Self>,
3596 ) {
3597 self.move_selection_heads(cx, |map, head, _| {
3598 (
3599 movement::line_end(map, head, *stop_at_soft_boundaries),
3600 SelectionGoal::None,
3601 )
3602 });
3603 }
3604
3605 pub fn delete_to_end_of_line(&mut self, _: &DeleteToEndOfLine, cx: &mut ViewContext<Self>) {
3606 self.transact(cx, |this, cx| {
3607 this.select_to_end_of_line(&SelectToEndOfLine(false), cx);
3608 this.delete(&Delete, cx);
3609 });
3610 }
3611
3612 pub fn cut_to_end_of_line(&mut self, _: &CutToEndOfLine, cx: &mut ViewContext<Self>) {
3613 self.transact(cx, |this, cx| {
3614 this.select_to_end_of_line(&SelectToEndOfLine(false), cx);
3615 this.cut(&Cut, cx);
3616 });
3617 }
3618
3619 pub fn move_to_beginning(&mut self, _: &MoveToBeginning, cx: &mut ViewContext<Self>) {
3620 if matches!(self.mode, EditorMode::SingleLine) {
3621 cx.propagate_action();
3622 return;
3623 }
3624
3625 let selection = Selection {
3626 id: post_inc(&mut self.next_selection_id),
3627 start: 0,
3628 end: 0,
3629 reversed: false,
3630 goal: SelectionGoal::None,
3631 };
3632 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
3633 }
3634
3635 pub fn select_to_beginning(&mut self, _: &SelectToBeginning, cx: &mut ViewContext<Self>) {
3636 let mut selection = self.local_selections::<Point>(cx).last().unwrap().clone();
3637 selection.set_head(Point::zero(), SelectionGoal::None);
3638 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
3639 }
3640
3641 pub fn move_to_end(&mut self, _: &MoveToEnd, cx: &mut ViewContext<Self>) {
3642 if matches!(self.mode, EditorMode::SingleLine) {
3643 cx.propagate_action();
3644 return;
3645 }
3646
3647 let cursor = self.buffer.read(cx).read(cx).len();
3648 let selection = Selection {
3649 id: post_inc(&mut self.next_selection_id),
3650 start: cursor,
3651 end: cursor,
3652 reversed: false,
3653 goal: SelectionGoal::None,
3654 };
3655 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
3656 }
3657
3658 pub fn set_nav_history(&mut self, nav_history: Option<ItemNavHistory>) {
3659 self.nav_history = nav_history;
3660 }
3661
3662 pub fn nav_history(&self) -> Option<&ItemNavHistory> {
3663 self.nav_history.as_ref()
3664 }
3665
3666 fn push_to_nav_history(
3667 &self,
3668 position: Anchor,
3669 new_position: Option<Point>,
3670 cx: &mut ViewContext<Self>,
3671 ) {
3672 if let Some(nav_history) = &self.nav_history {
3673 let buffer = self.buffer.read(cx).read(cx);
3674 let offset = position.to_offset(&buffer);
3675 let point = position.to_point(&buffer);
3676 drop(buffer);
3677
3678 if let Some(new_position) = new_position {
3679 let row_delta = (new_position.row as i64 - point.row as i64).abs();
3680 if row_delta < MIN_NAVIGATION_HISTORY_ROW_DELTA {
3681 return;
3682 }
3683 }
3684
3685 nav_history.push(Some(NavigationData {
3686 anchor: position,
3687 offset,
3688 }));
3689 }
3690 }
3691
3692 pub fn select_to_end(&mut self, _: &SelectToEnd, cx: &mut ViewContext<Self>) {
3693 let mut selection = self.local_selections::<usize>(cx).first().unwrap().clone();
3694 selection.set_head(self.buffer.read(cx).read(cx).len(), SelectionGoal::None);
3695 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
3696 }
3697
3698 pub fn select_all(&mut self, _: &SelectAll, cx: &mut ViewContext<Self>) {
3699 let selection = Selection {
3700 id: post_inc(&mut self.next_selection_id),
3701 start: 0,
3702 end: self.buffer.read(cx).read(cx).len(),
3703 reversed: false,
3704 goal: SelectionGoal::None,
3705 };
3706 self.update_selections(vec![selection], None, cx);
3707 }
3708
3709 pub fn select_line(&mut self, _: &SelectLine, cx: &mut ViewContext<Self>) {
3710 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3711 let mut selections = self.local_selections::<Point>(cx);
3712 let max_point = display_map.buffer_snapshot.max_point();
3713 for selection in &mut selections {
3714 let rows = selection.spanned_rows(true, &display_map);
3715 selection.start = Point::new(rows.start, 0);
3716 selection.end = cmp::min(max_point, Point::new(rows.end, 0));
3717 selection.reversed = false;
3718 }
3719 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3720 }
3721
3722 pub fn split_selection_into_lines(
3723 &mut self,
3724 _: &SplitSelectionIntoLines,
3725 cx: &mut ViewContext<Self>,
3726 ) {
3727 let mut to_unfold = Vec::new();
3728 let mut new_selections = Vec::new();
3729 {
3730 let selections = self.local_selections::<Point>(cx);
3731 let buffer = self.buffer.read(cx).read(cx);
3732 for selection in selections {
3733 for row in selection.start.row..selection.end.row {
3734 let cursor = Point::new(row, buffer.line_len(row));
3735 new_selections.push(Selection {
3736 id: post_inc(&mut self.next_selection_id),
3737 start: cursor,
3738 end: cursor,
3739 reversed: false,
3740 goal: SelectionGoal::None,
3741 });
3742 }
3743 new_selections.push(Selection {
3744 id: selection.id,
3745 start: selection.end,
3746 end: selection.end,
3747 reversed: false,
3748 goal: SelectionGoal::None,
3749 });
3750 to_unfold.push(selection.start..selection.end);
3751 }
3752 }
3753 self.unfold_ranges(to_unfold, cx);
3754 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
3755 }
3756
3757 pub fn add_selection_above(&mut self, _: &AddSelectionAbove, cx: &mut ViewContext<Self>) {
3758 self.add_selection(true, cx);
3759 }
3760
3761 pub fn add_selection_below(&mut self, _: &AddSelectionBelow, cx: &mut ViewContext<Self>) {
3762 self.add_selection(false, cx);
3763 }
3764
3765 fn add_selection(&mut self, above: bool, cx: &mut ViewContext<Self>) {
3766 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3767 let mut selections = self.local_selections::<Point>(cx);
3768 let mut state = self.add_selections_state.take().unwrap_or_else(|| {
3769 let oldest_selection = selections.iter().min_by_key(|s| s.id).unwrap().clone();
3770 let range = oldest_selection.display_range(&display_map).sorted();
3771 let columns = cmp::min(range.start.column(), range.end.column())
3772 ..cmp::max(range.start.column(), range.end.column());
3773
3774 selections.clear();
3775 let mut stack = Vec::new();
3776 for row in range.start.row()..=range.end.row() {
3777 if let Some(selection) = self.build_columnar_selection(
3778 &display_map,
3779 row,
3780 &columns,
3781 oldest_selection.reversed,
3782 ) {
3783 stack.push(selection.id);
3784 selections.push(selection);
3785 }
3786 }
3787
3788 if above {
3789 stack.reverse();
3790 }
3791
3792 AddSelectionsState { above, stack }
3793 });
3794
3795 let last_added_selection = *state.stack.last().unwrap();
3796 let mut new_selections = Vec::new();
3797 if above == state.above {
3798 let end_row = if above {
3799 0
3800 } else {
3801 display_map.max_point().row()
3802 };
3803
3804 'outer: for selection in selections {
3805 if selection.id == last_added_selection {
3806 let range = selection.display_range(&display_map).sorted();
3807 debug_assert_eq!(range.start.row(), range.end.row());
3808 let mut row = range.start.row();
3809 let columns = if let SelectionGoal::ColumnRange { start, end } = selection.goal
3810 {
3811 start..end
3812 } else {
3813 cmp::min(range.start.column(), range.end.column())
3814 ..cmp::max(range.start.column(), range.end.column())
3815 };
3816
3817 while row != end_row {
3818 if above {
3819 row -= 1;
3820 } else {
3821 row += 1;
3822 }
3823
3824 if let Some(new_selection) = self.build_columnar_selection(
3825 &display_map,
3826 row,
3827 &columns,
3828 selection.reversed,
3829 ) {
3830 state.stack.push(new_selection.id);
3831 if above {
3832 new_selections.push(new_selection);
3833 new_selections.push(selection);
3834 } else {
3835 new_selections.push(selection);
3836 new_selections.push(new_selection);
3837 }
3838
3839 continue 'outer;
3840 }
3841 }
3842 }
3843
3844 new_selections.push(selection);
3845 }
3846 } else {
3847 new_selections = selections;
3848 new_selections.retain(|s| s.id != last_added_selection);
3849 state.stack.pop();
3850 }
3851
3852 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
3853 if state.stack.len() > 1 {
3854 self.add_selections_state = Some(state);
3855 }
3856 }
3857
3858 pub fn select_next(&mut self, action: &SelectNext, cx: &mut ViewContext<Self>) {
3859 let replace_newest = action.0;
3860 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3861 let buffer = &display_map.buffer_snapshot;
3862 let mut selections = self.local_selections::<usize>(cx);
3863 if let Some(mut select_next_state) = self.select_next_state.take() {
3864 let query = &select_next_state.query;
3865 if !select_next_state.done {
3866 let first_selection = selections.iter().min_by_key(|s| s.id).unwrap();
3867 let last_selection = selections.iter().max_by_key(|s| s.id).unwrap();
3868 let mut next_selected_range = None;
3869
3870 let bytes_after_last_selection =
3871 buffer.bytes_in_range(last_selection.end..buffer.len());
3872 let bytes_before_first_selection = buffer.bytes_in_range(0..first_selection.start);
3873 let query_matches = query
3874 .stream_find_iter(bytes_after_last_selection)
3875 .map(|result| (last_selection.end, result))
3876 .chain(
3877 query
3878 .stream_find_iter(bytes_before_first_selection)
3879 .map(|result| (0, result)),
3880 );
3881 for (start_offset, query_match) in query_matches {
3882 let query_match = query_match.unwrap(); // can only fail due to I/O
3883 let offset_range =
3884 start_offset + query_match.start()..start_offset + query_match.end();
3885 let display_range = offset_range.start.to_display_point(&display_map)
3886 ..offset_range.end.to_display_point(&display_map);
3887
3888 if !select_next_state.wordwise
3889 || (!movement::is_inside_word(&display_map, display_range.start)
3890 && !movement::is_inside_word(&display_map, display_range.end))
3891 {
3892 next_selected_range = Some(offset_range);
3893 break;
3894 }
3895 }
3896
3897 if let Some(next_selected_range) = next_selected_range {
3898 if replace_newest {
3899 if let Some(newest_id) =
3900 selections.iter().max_by_key(|s| s.id).map(|s| s.id)
3901 {
3902 selections.retain(|s| s.id != newest_id);
3903 }
3904 }
3905 selections.push(Selection {
3906 id: post_inc(&mut self.next_selection_id),
3907 start: next_selected_range.start,
3908 end: next_selected_range.end,
3909 reversed: false,
3910 goal: SelectionGoal::None,
3911 });
3912 self.update_selections(selections, Some(Autoscroll::Newest), cx);
3913 } else {
3914 select_next_state.done = true;
3915 }
3916 }
3917
3918 self.select_next_state = Some(select_next_state);
3919 } else if selections.len() == 1 {
3920 let selection = selections.last_mut().unwrap();
3921 if selection.start == selection.end {
3922 let word_range = movement::surrounding_word(
3923 &display_map,
3924 selection.start.to_display_point(&display_map),
3925 );
3926 selection.start = word_range.start.to_offset(&display_map, Bias::Left);
3927 selection.end = word_range.end.to_offset(&display_map, Bias::Left);
3928 selection.goal = SelectionGoal::None;
3929 selection.reversed = false;
3930
3931 let query = buffer
3932 .text_for_range(selection.start..selection.end)
3933 .collect::<String>();
3934 let select_state = SelectNextState {
3935 query: AhoCorasick::new_auto_configured(&[query]),
3936 wordwise: true,
3937 done: false,
3938 };
3939 self.update_selections(selections, Some(Autoscroll::Newest), cx);
3940 self.select_next_state = Some(select_state);
3941 } else {
3942 let query = buffer
3943 .text_for_range(selection.start..selection.end)
3944 .collect::<String>();
3945 self.select_next_state = Some(SelectNextState {
3946 query: AhoCorasick::new_auto_configured(&[query]),
3947 wordwise: false,
3948 done: false,
3949 });
3950 self.select_next(action, cx);
3951 }
3952 }
3953 }
3954
3955 pub fn toggle_comments(&mut self, _: &ToggleComments, cx: &mut ViewContext<Self>) {
3956 // Get the line comment prefix. Split its trailing whitespace into a separate string,
3957 // as that portion won't be used for detecting if a line is a comment.
3958 let full_comment_prefix =
3959 if let Some(prefix) = self.language(cx).and_then(|l| l.line_comment_prefix()) {
3960 prefix.to_string()
3961 } else {
3962 return;
3963 };
3964 let comment_prefix = full_comment_prefix.trim_end_matches(' ');
3965 let comment_prefix_whitespace = &full_comment_prefix[comment_prefix.len()..];
3966
3967 self.start_transaction(cx);
3968 let mut selections = self.local_selections::<Point>(cx);
3969 let mut all_selection_lines_are_comments = true;
3970 let mut edit_ranges = Vec::new();
3971 let mut last_toggled_row = None;
3972 self.buffer.update(cx, |buffer, cx| {
3973 for selection in &mut selections {
3974 edit_ranges.clear();
3975 let snapshot = buffer.snapshot(cx);
3976
3977 let end_row =
3978 if selection.end.row > selection.start.row && selection.end.column == 0 {
3979 selection.end.row
3980 } else {
3981 selection.end.row + 1
3982 };
3983
3984 for row in selection.start.row..end_row {
3985 // If multiple selections contain a given row, avoid processing that
3986 // row more than once.
3987 if last_toggled_row == Some(row) {
3988 continue;
3989 } else {
3990 last_toggled_row = Some(row);
3991 }
3992
3993 if snapshot.is_line_blank(row) {
3994 continue;
3995 }
3996
3997 let start = Point::new(row, snapshot.indent_column_for_line(row));
3998 let mut line_bytes = snapshot
3999 .bytes_in_range(start..snapshot.max_point())
4000 .flatten()
4001 .copied();
4002
4003 // If this line currently begins with the line comment prefix, then record
4004 // the range containing the prefix.
4005 if all_selection_lines_are_comments
4006 && line_bytes
4007 .by_ref()
4008 .take(comment_prefix.len())
4009 .eq(comment_prefix.bytes())
4010 {
4011 // Include any whitespace that matches the comment prefix.
4012 let matching_whitespace_len = line_bytes
4013 .zip(comment_prefix_whitespace.bytes())
4014 .take_while(|(a, b)| a == b)
4015 .count() as u32;
4016 let end = Point::new(
4017 row,
4018 start.column + comment_prefix.len() as u32 + matching_whitespace_len,
4019 );
4020 edit_ranges.push(start..end);
4021 }
4022 // If this line does not begin with the line comment prefix, then record
4023 // the position where the prefix should be inserted.
4024 else {
4025 all_selection_lines_are_comments = false;
4026 edit_ranges.push(start..start);
4027 }
4028 }
4029
4030 if !edit_ranges.is_empty() {
4031 if all_selection_lines_are_comments {
4032 buffer.edit(edit_ranges.iter().cloned(), "", cx);
4033 } else {
4034 let min_column = edit_ranges.iter().map(|r| r.start.column).min().unwrap();
4035 let edit_ranges = edit_ranges.iter().map(|range| {
4036 let position = Point::new(range.start.row, min_column);
4037 position..position
4038 });
4039 buffer.edit(edit_ranges, &full_comment_prefix, cx);
4040 }
4041 }
4042 }
4043 });
4044
4045 self.update_selections(
4046 self.local_selections::<usize>(cx),
4047 Some(Autoscroll::Fit),
4048 cx,
4049 );
4050 self.end_transaction(cx);
4051 }
4052
4053 pub fn select_larger_syntax_node(
4054 &mut self,
4055 _: &SelectLargerSyntaxNode,
4056 cx: &mut ViewContext<Self>,
4057 ) {
4058 let old_selections = self.local_selections::<usize>(cx).into_boxed_slice();
4059 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
4060 let buffer = self.buffer.read(cx).snapshot(cx);
4061
4062 let mut stack = mem::take(&mut self.select_larger_syntax_node_stack);
4063 let mut selected_larger_node = false;
4064 let new_selections = old_selections
4065 .iter()
4066 .map(|selection| {
4067 let old_range = selection.start..selection.end;
4068 let mut new_range = old_range.clone();
4069 while let Some(containing_range) =
4070 buffer.range_for_syntax_ancestor(new_range.clone())
4071 {
4072 new_range = containing_range;
4073 if !display_map.intersects_fold(new_range.start)
4074 && !display_map.intersects_fold(new_range.end)
4075 {
4076 break;
4077 }
4078 }
4079
4080 selected_larger_node |= new_range != old_range;
4081 Selection {
4082 id: selection.id,
4083 start: new_range.start,
4084 end: new_range.end,
4085 goal: SelectionGoal::None,
4086 reversed: selection.reversed,
4087 }
4088 })
4089 .collect::<Vec<_>>();
4090
4091 if selected_larger_node {
4092 stack.push(old_selections);
4093 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
4094 }
4095 self.select_larger_syntax_node_stack = stack;
4096 }
4097
4098 pub fn select_smaller_syntax_node(
4099 &mut self,
4100 _: &SelectSmallerSyntaxNode,
4101 cx: &mut ViewContext<Self>,
4102 ) {
4103 let mut stack = mem::take(&mut self.select_larger_syntax_node_stack);
4104 if let Some(selections) = stack.pop() {
4105 self.update_selections(selections.to_vec(), Some(Autoscroll::Fit), cx);
4106 }
4107 self.select_larger_syntax_node_stack = stack;
4108 }
4109
4110 pub fn move_to_enclosing_bracket(
4111 &mut self,
4112 _: &MoveToEnclosingBracket,
4113 cx: &mut ViewContext<Self>,
4114 ) {
4115 let mut selections = self.local_selections::<usize>(cx);
4116 let buffer = self.buffer.read(cx).snapshot(cx);
4117 for selection in &mut selections {
4118 if let Some((open_range, close_range)) =
4119 buffer.enclosing_bracket_ranges(selection.start..selection.end)
4120 {
4121 let close_range = close_range.to_inclusive();
4122 let destination = if close_range.contains(&selection.start)
4123 && close_range.contains(&selection.end)
4124 {
4125 open_range.end
4126 } else {
4127 *close_range.start()
4128 };
4129 selection.start = destination;
4130 selection.end = destination;
4131 }
4132 }
4133
4134 self.update_selections(selections, Some(Autoscroll::Fit), cx);
4135 }
4136
4137 pub fn go_to_diagnostic(
4138 &mut self,
4139 &GoToDiagnostic(direction): &GoToDiagnostic,
4140 cx: &mut ViewContext<Self>,
4141 ) {
4142 let buffer = self.buffer.read(cx).snapshot(cx);
4143 let selection = self.newest_selection_with_snapshot::<usize>(&buffer);
4144 let mut active_primary_range = self.active_diagnostics.as_ref().map(|active_diagnostics| {
4145 active_diagnostics
4146 .primary_range
4147 .to_offset(&buffer)
4148 .to_inclusive()
4149 });
4150 let mut search_start = if let Some(active_primary_range) = active_primary_range.as_ref() {
4151 if active_primary_range.contains(&selection.head()) {
4152 *active_primary_range.end()
4153 } else {
4154 selection.head()
4155 }
4156 } else {
4157 selection.head()
4158 };
4159
4160 loop {
4161 let mut diagnostics = if direction == Direction::Prev {
4162 buffer.diagnostics_in_range::<_, usize>(0..search_start, true)
4163 } else {
4164 buffer.diagnostics_in_range::<_, usize>(search_start..buffer.len(), false)
4165 };
4166 let group = diagnostics.find_map(|entry| {
4167 if entry.diagnostic.is_primary
4168 && entry.diagnostic.severity <= DiagnosticSeverity::WARNING
4169 && !entry.range.is_empty()
4170 && Some(entry.range.end) != active_primary_range.as_ref().map(|r| *r.end())
4171 {
4172 Some((entry.range, entry.diagnostic.group_id))
4173 } else {
4174 None
4175 }
4176 });
4177
4178 if let Some((primary_range, group_id)) = group {
4179 self.activate_diagnostics(group_id, cx);
4180 self.update_selections(
4181 vec![Selection {
4182 id: selection.id,
4183 start: primary_range.start,
4184 end: primary_range.start,
4185 reversed: false,
4186 goal: SelectionGoal::None,
4187 }],
4188 Some(Autoscroll::Center),
4189 cx,
4190 );
4191 break;
4192 } else {
4193 // Cycle around to the start of the buffer, potentially moving back to the start of
4194 // the currently active diagnostic.
4195 active_primary_range.take();
4196 if direction == Direction::Prev {
4197 if search_start == buffer.len() {
4198 break;
4199 } else {
4200 search_start = buffer.len();
4201 }
4202 } else {
4203 if search_start == 0 {
4204 break;
4205 } else {
4206 search_start = 0;
4207 }
4208 }
4209 }
4210 }
4211 }
4212
4213 pub fn go_to_definition(
4214 workspace: &mut Workspace,
4215 _: &GoToDefinition,
4216 cx: &mut ViewContext<Workspace>,
4217 ) {
4218 let active_item = workspace.active_item(cx);
4219 let editor_handle = if let Some(editor) = active_item
4220 .as_ref()
4221 .and_then(|item| item.act_as::<Self>(cx))
4222 {
4223 editor
4224 } else {
4225 return;
4226 };
4227
4228 let editor = editor_handle.read(cx);
4229 let head = editor.newest_selection::<usize>(cx).head();
4230 let (buffer, head) =
4231 if let Some(text_anchor) = editor.buffer.read(cx).text_anchor_for_position(head, cx) {
4232 text_anchor
4233 } else {
4234 return;
4235 };
4236
4237 let project = workspace.project().clone();
4238 let definitions = project.update(cx, |project, cx| project.definition(&buffer, head, cx));
4239 cx.spawn(|workspace, mut cx| async move {
4240 let definitions = definitions.await?;
4241 workspace.update(&mut cx, |workspace, cx| {
4242 let nav_history = workspace.active_pane().read(cx).nav_history().clone();
4243 for definition in definitions {
4244 let range = definition.range.to_offset(definition.buffer.read(cx));
4245
4246 let target_editor_handle = workspace.open_project_item(definition.buffer, cx);
4247 target_editor_handle.update(cx, |target_editor, cx| {
4248 // When selecting a definition in a different buffer, disable the nav history
4249 // to avoid creating a history entry at the previous cursor location.
4250 if editor_handle != target_editor_handle {
4251 nav_history.borrow_mut().disable();
4252 }
4253 target_editor.select_ranges([range], Some(Autoscroll::Center), cx);
4254 nav_history.borrow_mut().enable();
4255 });
4256 }
4257 });
4258
4259 Ok::<(), anyhow::Error>(())
4260 })
4261 .detach_and_log_err(cx);
4262 }
4263
4264 pub fn find_all_references(
4265 workspace: &mut Workspace,
4266 _: &FindAllReferences,
4267 cx: &mut ViewContext<Workspace>,
4268 ) -> Option<Task<Result<()>>> {
4269 let active_item = workspace.active_item(cx)?;
4270 let editor_handle = active_item.act_as::<Self>(cx)?;
4271
4272 let editor = editor_handle.read(cx);
4273 let head = editor.newest_selection::<usize>(cx).head();
4274 let (buffer, head) = editor.buffer.read(cx).text_anchor_for_position(head, cx)?;
4275 let replica_id = editor.replica_id(cx);
4276
4277 let project = workspace.project().clone();
4278 let references = project.update(cx, |project, cx| project.references(&buffer, head, cx));
4279 Some(cx.spawn(|workspace, mut cx| async move {
4280 let mut locations = references.await?;
4281 if locations.is_empty() {
4282 return Ok(());
4283 }
4284
4285 locations.sort_by_key(|location| location.buffer.id());
4286 let mut locations = locations.into_iter().peekable();
4287 let mut ranges_to_highlight = Vec::new();
4288
4289 let excerpt_buffer = cx.add_model(|cx| {
4290 let mut symbol_name = None;
4291 let mut multibuffer = MultiBuffer::new(replica_id);
4292 while let Some(location) = locations.next() {
4293 let buffer = location.buffer.read(cx);
4294 let mut ranges_for_buffer = Vec::new();
4295 let range = location.range.to_offset(buffer);
4296 ranges_for_buffer.push(range.clone());
4297 if symbol_name.is_none() {
4298 symbol_name = Some(buffer.text_for_range(range).collect::<String>());
4299 }
4300
4301 while let Some(next_location) = locations.peek() {
4302 if next_location.buffer == location.buffer {
4303 ranges_for_buffer.push(next_location.range.to_offset(buffer));
4304 locations.next();
4305 } else {
4306 break;
4307 }
4308 }
4309
4310 ranges_for_buffer.sort_by_key(|range| (range.start, Reverse(range.end)));
4311 ranges_to_highlight.extend(multibuffer.push_excerpts_with_context_lines(
4312 location.buffer.clone(),
4313 ranges_for_buffer,
4314 1,
4315 cx,
4316 ));
4317 }
4318 multibuffer.with_title(format!("References to `{}`", symbol_name.unwrap()))
4319 });
4320
4321 workspace.update(&mut cx, |workspace, cx| {
4322 let editor =
4323 cx.add_view(|cx| Editor::for_multibuffer(excerpt_buffer, Some(project), cx));
4324 editor.update(cx, |editor, cx| {
4325 let color = editor.style(cx).highlighted_line_background;
4326 editor.highlight_background::<Self>(ranges_to_highlight, color, cx);
4327 });
4328 workspace.add_item(Box::new(editor), cx);
4329 });
4330
4331 Ok(())
4332 }))
4333 }
4334
4335 pub fn rename(&mut self, _: &Rename, cx: &mut ViewContext<Self>) -> Option<Task<Result<()>>> {
4336 use language::ToOffset as _;
4337
4338 let project = self.project.clone()?;
4339 let selection = self.newest_anchor_selection().clone();
4340 let (cursor_buffer, cursor_buffer_position) = self
4341 .buffer
4342 .read(cx)
4343 .text_anchor_for_position(selection.head(), cx)?;
4344 let (tail_buffer, _) = self
4345 .buffer
4346 .read(cx)
4347 .text_anchor_for_position(selection.tail(), cx)?;
4348 if tail_buffer != cursor_buffer {
4349 return None;
4350 }
4351
4352 let snapshot = cursor_buffer.read(cx).snapshot();
4353 let cursor_buffer_offset = cursor_buffer_position.to_offset(&snapshot);
4354 let prepare_rename = project.update(cx, |project, cx| {
4355 project.prepare_rename(cursor_buffer, cursor_buffer_offset, cx)
4356 });
4357
4358 Some(cx.spawn(|this, mut cx| async move {
4359 if let Some(rename_range) = prepare_rename.await? {
4360 let rename_buffer_range = rename_range.to_offset(&snapshot);
4361 let cursor_offset_in_rename_range =
4362 cursor_buffer_offset.saturating_sub(rename_buffer_range.start);
4363
4364 this.update(&mut cx, |this, cx| {
4365 this.take_rename(false, cx);
4366 let style = this.style(cx);
4367 let buffer = this.buffer.read(cx).read(cx);
4368 let cursor_offset = selection.head().to_offset(&buffer);
4369 let rename_start = cursor_offset.saturating_sub(cursor_offset_in_rename_range);
4370 let rename_end = rename_start + rename_buffer_range.len();
4371 let range = buffer.anchor_before(rename_start)..buffer.anchor_after(rename_end);
4372 let mut old_highlight_id = None;
4373 let old_name = buffer
4374 .chunks(rename_start..rename_end, true)
4375 .map(|chunk| {
4376 if old_highlight_id.is_none() {
4377 old_highlight_id = chunk.syntax_highlight_id;
4378 }
4379 chunk.text
4380 })
4381 .collect();
4382
4383 drop(buffer);
4384
4385 // Position the selection in the rename editor so that it matches the current selection.
4386 this.show_local_selections = false;
4387 let rename_editor = cx.add_view(|cx| {
4388 let mut editor = Editor::single_line(None, cx);
4389 if let Some(old_highlight_id) = old_highlight_id {
4390 editor.override_text_style =
4391 Some(Box::new(move |style| old_highlight_id.style(&style.syntax)));
4392 }
4393 editor
4394 .buffer
4395 .update(cx, |buffer, cx| buffer.edit([0..0], &old_name, cx));
4396 editor.select_all(&SelectAll, cx);
4397 editor
4398 });
4399
4400 let ranges = this
4401 .clear_background_highlights::<DocumentHighlightWrite>(cx)
4402 .into_iter()
4403 .flat_map(|(_, ranges)| ranges)
4404 .chain(
4405 this.clear_background_highlights::<DocumentHighlightRead>(cx)
4406 .into_iter()
4407 .flat_map(|(_, ranges)| ranges),
4408 )
4409 .collect();
4410 this.highlight_text::<Rename>(
4411 ranges,
4412 HighlightStyle {
4413 fade_out: Some(style.rename_fade),
4414 ..Default::default()
4415 },
4416 cx,
4417 );
4418 cx.focus(&rename_editor);
4419 let block_id = this.insert_blocks(
4420 [BlockProperties {
4421 position: range.start.clone(),
4422 height: 1,
4423 render: Arc::new({
4424 let editor = rename_editor.clone();
4425 move |cx: &BlockContext| {
4426 ChildView::new(editor.clone())
4427 .contained()
4428 .with_padding_left(cx.anchor_x)
4429 .boxed()
4430 }
4431 }),
4432 disposition: BlockDisposition::Below,
4433 }],
4434 cx,
4435 )[0];
4436 this.pending_rename = Some(RenameState {
4437 range,
4438 old_name,
4439 editor: rename_editor,
4440 block_id,
4441 });
4442 });
4443 }
4444
4445 Ok(())
4446 }))
4447 }
4448
4449 pub fn confirm_rename(
4450 workspace: &mut Workspace,
4451 _: &ConfirmRename,
4452 cx: &mut ViewContext<Workspace>,
4453 ) -> Option<Task<Result<()>>> {
4454 let editor = workspace.active_item(cx)?.act_as::<Editor>(cx)?;
4455
4456 let (buffer, range, old_name, new_name) = editor.update(cx, |editor, cx| {
4457 let rename = editor.take_rename(false, cx)?;
4458 let buffer = editor.buffer.read(cx);
4459 let (start_buffer, start) =
4460 buffer.text_anchor_for_position(rename.range.start.clone(), cx)?;
4461 let (end_buffer, end) =
4462 buffer.text_anchor_for_position(rename.range.end.clone(), cx)?;
4463 if start_buffer == end_buffer {
4464 let new_name = rename.editor.read(cx).text(cx);
4465 Some((start_buffer, start..end, rename.old_name, new_name))
4466 } else {
4467 None
4468 }
4469 })?;
4470
4471 let rename = workspace.project().clone().update(cx, |project, cx| {
4472 project.perform_rename(
4473 buffer.clone(),
4474 range.start.clone(),
4475 new_name.clone(),
4476 true,
4477 cx,
4478 )
4479 });
4480
4481 Some(cx.spawn(|workspace, mut cx| async move {
4482 let project_transaction = rename.await?;
4483 Self::open_project_transaction(
4484 editor.clone(),
4485 workspace,
4486 project_transaction,
4487 format!("Rename: {} → {}", old_name, new_name),
4488 cx.clone(),
4489 )
4490 .await?;
4491
4492 editor.update(&mut cx, |editor, cx| {
4493 editor.refresh_document_highlights(cx);
4494 });
4495 Ok(())
4496 }))
4497 }
4498
4499 fn take_rename(
4500 &mut self,
4501 moving_cursor: bool,
4502 cx: &mut ViewContext<Self>,
4503 ) -> Option<RenameState> {
4504 let rename = self.pending_rename.take()?;
4505 self.remove_blocks([rename.block_id].into_iter().collect(), cx);
4506 self.clear_text_highlights::<Rename>(cx);
4507 self.show_local_selections = true;
4508
4509 if moving_cursor {
4510 let cursor_in_rename_editor =
4511 rename.editor.read(cx).newest_selection::<usize>(cx).head();
4512
4513 // Update the selection to match the position of the selection inside
4514 // the rename editor.
4515 let snapshot = self.buffer.read(cx).read(cx);
4516 let rename_range = rename.range.to_offset(&snapshot);
4517 let cursor_in_editor = snapshot
4518 .clip_offset(rename_range.start + cursor_in_rename_editor, Bias::Left)
4519 .min(rename_range.end);
4520 drop(snapshot);
4521
4522 self.update_selections(
4523 vec![Selection {
4524 id: self.newest_anchor_selection().id,
4525 start: cursor_in_editor,
4526 end: cursor_in_editor,
4527 reversed: false,
4528 goal: SelectionGoal::None,
4529 }],
4530 None,
4531 cx,
4532 );
4533 }
4534
4535 Some(rename)
4536 }
4537
4538 fn invalidate_rename_range(
4539 &mut self,
4540 buffer: &MultiBufferSnapshot,
4541 cx: &mut ViewContext<Self>,
4542 ) {
4543 if let Some(rename) = self.pending_rename.as_ref() {
4544 if self.selections.len() == 1 {
4545 let head = self.selections[0].head().to_offset(buffer);
4546 let range = rename.range.to_offset(buffer).to_inclusive();
4547 if range.contains(&head) {
4548 return;
4549 }
4550 }
4551 let rename = self.pending_rename.take().unwrap();
4552 self.remove_blocks([rename.block_id].into_iter().collect(), cx);
4553 self.clear_background_highlights::<Rename>(cx);
4554 }
4555 }
4556
4557 #[cfg(any(test, feature = "test-support"))]
4558 pub fn pending_rename(&self) -> Option<&RenameState> {
4559 self.pending_rename.as_ref()
4560 }
4561
4562 fn refresh_active_diagnostics(&mut self, cx: &mut ViewContext<Editor>) {
4563 if let Some(active_diagnostics) = self.active_diagnostics.as_mut() {
4564 let buffer = self.buffer.read(cx).snapshot(cx);
4565 let primary_range_start = active_diagnostics.primary_range.start.to_offset(&buffer);
4566 let is_valid = buffer
4567 .diagnostics_in_range::<_, usize>(active_diagnostics.primary_range.clone(), false)
4568 .any(|entry| {
4569 entry.diagnostic.is_primary
4570 && !entry.range.is_empty()
4571 && entry.range.start == primary_range_start
4572 && entry.diagnostic.message == active_diagnostics.primary_message
4573 });
4574
4575 if is_valid != active_diagnostics.is_valid {
4576 active_diagnostics.is_valid = is_valid;
4577 let mut new_styles = HashMap::default();
4578 for (block_id, diagnostic) in &active_diagnostics.blocks {
4579 new_styles.insert(
4580 *block_id,
4581 diagnostic_block_renderer(diagnostic.clone(), is_valid),
4582 );
4583 }
4584 self.display_map
4585 .update(cx, |display_map, _| display_map.replace_blocks(new_styles));
4586 }
4587 }
4588 }
4589
4590 fn activate_diagnostics(&mut self, group_id: usize, cx: &mut ViewContext<Self>) {
4591 self.dismiss_diagnostics(cx);
4592 self.active_diagnostics = self.display_map.update(cx, |display_map, cx| {
4593 let buffer = self.buffer.read(cx).snapshot(cx);
4594
4595 let mut primary_range = None;
4596 let mut primary_message = None;
4597 let mut group_end = Point::zero();
4598 let diagnostic_group = buffer
4599 .diagnostic_group::<Point>(group_id)
4600 .map(|entry| {
4601 if entry.range.end > group_end {
4602 group_end = entry.range.end;
4603 }
4604 if entry.diagnostic.is_primary {
4605 primary_range = Some(entry.range.clone());
4606 primary_message = Some(entry.diagnostic.message.clone());
4607 }
4608 entry
4609 })
4610 .collect::<Vec<_>>();
4611 let primary_range = primary_range.unwrap();
4612 let primary_message = primary_message.unwrap();
4613 let primary_range =
4614 buffer.anchor_after(primary_range.start)..buffer.anchor_before(primary_range.end);
4615
4616 let blocks = display_map
4617 .insert_blocks(
4618 diagnostic_group.iter().map(|entry| {
4619 let diagnostic = entry.diagnostic.clone();
4620 let message_height = diagnostic.message.lines().count() as u8;
4621 BlockProperties {
4622 position: buffer.anchor_after(entry.range.start),
4623 height: message_height,
4624 render: diagnostic_block_renderer(diagnostic, true),
4625 disposition: BlockDisposition::Below,
4626 }
4627 }),
4628 cx,
4629 )
4630 .into_iter()
4631 .zip(diagnostic_group.into_iter().map(|entry| entry.diagnostic))
4632 .collect();
4633
4634 Some(ActiveDiagnosticGroup {
4635 primary_range,
4636 primary_message,
4637 blocks,
4638 is_valid: true,
4639 })
4640 });
4641 }
4642
4643 fn dismiss_diagnostics(&mut self, cx: &mut ViewContext<Self>) {
4644 if let Some(active_diagnostic_group) = self.active_diagnostics.take() {
4645 self.display_map.update(cx, |display_map, cx| {
4646 display_map.remove_blocks(active_diagnostic_group.blocks.into_keys().collect(), cx);
4647 });
4648 cx.notify();
4649 }
4650 }
4651
4652 fn build_columnar_selection(
4653 &mut self,
4654 display_map: &DisplaySnapshot,
4655 row: u32,
4656 columns: &Range<u32>,
4657 reversed: bool,
4658 ) -> Option<Selection<Point>> {
4659 let is_empty = columns.start == columns.end;
4660 let line_len = display_map.line_len(row);
4661 if columns.start < line_len || (is_empty && columns.start == line_len) {
4662 let start = DisplayPoint::new(row, columns.start);
4663 let end = DisplayPoint::new(row, cmp::min(columns.end, line_len));
4664 Some(Selection {
4665 id: post_inc(&mut self.next_selection_id),
4666 start: start.to_point(display_map),
4667 end: end.to_point(display_map),
4668 reversed,
4669 goal: SelectionGoal::ColumnRange {
4670 start: columns.start,
4671 end: columns.end,
4672 },
4673 })
4674 } else {
4675 None
4676 }
4677 }
4678
4679 pub fn local_selections_in_range(
4680 &self,
4681 range: Range<Anchor>,
4682 display_map: &DisplaySnapshot,
4683 ) -> Vec<Selection<Point>> {
4684 let buffer = &display_map.buffer_snapshot;
4685
4686 let start_ix = match self
4687 .selections
4688 .binary_search_by(|probe| probe.end.cmp(&range.start, &buffer).unwrap())
4689 {
4690 Ok(ix) | Err(ix) => ix,
4691 };
4692 let end_ix = match self
4693 .selections
4694 .binary_search_by(|probe| probe.start.cmp(&range.end, &buffer).unwrap())
4695 {
4696 Ok(ix) => ix + 1,
4697 Err(ix) => ix,
4698 };
4699
4700 fn point_selection(
4701 selection: &Selection<Anchor>,
4702 buffer: &MultiBufferSnapshot,
4703 ) -> Selection<Point> {
4704 let start = selection.start.to_point(&buffer);
4705 let end = selection.end.to_point(&buffer);
4706 Selection {
4707 id: selection.id,
4708 start,
4709 end,
4710 reversed: selection.reversed,
4711 goal: selection.goal,
4712 }
4713 }
4714
4715 self.selections[start_ix..end_ix]
4716 .iter()
4717 .chain(
4718 self.pending_selection
4719 .as_ref()
4720 .map(|pending| &pending.selection),
4721 )
4722 .map(|s| point_selection(s, &buffer))
4723 .collect()
4724 }
4725
4726 pub fn local_selections<'a, D>(&self, cx: &'a AppContext) -> Vec<Selection<D>>
4727 where
4728 D: 'a + TextDimension + Ord + Sub<D, Output = D>,
4729 {
4730 let buffer = self.buffer.read(cx).snapshot(cx);
4731 let mut selections = self
4732 .resolve_selections::<D, _>(self.selections.iter(), &buffer)
4733 .peekable();
4734
4735 let mut pending_selection = self.pending_selection::<D>(&buffer);
4736
4737 iter::from_fn(move || {
4738 if let Some(pending) = pending_selection.as_mut() {
4739 while let Some(next_selection) = selections.peek() {
4740 if pending.start <= next_selection.end && pending.end >= next_selection.start {
4741 let next_selection = selections.next().unwrap();
4742 if next_selection.start < pending.start {
4743 pending.start = next_selection.start;
4744 }
4745 if next_selection.end > pending.end {
4746 pending.end = next_selection.end;
4747 }
4748 } else if next_selection.end < pending.start {
4749 return selections.next();
4750 } else {
4751 break;
4752 }
4753 }
4754
4755 pending_selection.take()
4756 } else {
4757 selections.next()
4758 }
4759 })
4760 .collect()
4761 }
4762
4763 fn resolve_selections<'a, D, I>(
4764 &self,
4765 selections: I,
4766 snapshot: &MultiBufferSnapshot,
4767 ) -> impl 'a + Iterator<Item = Selection<D>>
4768 where
4769 D: TextDimension + Ord + Sub<D, Output = D>,
4770 I: 'a + IntoIterator<Item = &'a Selection<Anchor>>,
4771 {
4772 let (to_summarize, selections) = selections.into_iter().tee();
4773 let mut summaries = snapshot
4774 .summaries_for_anchors::<D, _>(to_summarize.flat_map(|s| [&s.start, &s.end]))
4775 .into_iter();
4776 selections.map(move |s| Selection {
4777 id: s.id,
4778 start: summaries.next().unwrap(),
4779 end: summaries.next().unwrap(),
4780 reversed: s.reversed,
4781 goal: s.goal,
4782 })
4783 }
4784
4785 fn pending_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
4786 &self,
4787 snapshot: &MultiBufferSnapshot,
4788 ) -> Option<Selection<D>> {
4789 self.pending_selection
4790 .as_ref()
4791 .map(|pending| self.resolve_selection(&pending.selection, &snapshot))
4792 }
4793
4794 fn resolve_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
4795 &self,
4796 selection: &Selection<Anchor>,
4797 buffer: &MultiBufferSnapshot,
4798 ) -> Selection<D> {
4799 Selection {
4800 id: selection.id,
4801 start: selection.start.summary::<D>(&buffer),
4802 end: selection.end.summary::<D>(&buffer),
4803 reversed: selection.reversed,
4804 goal: selection.goal,
4805 }
4806 }
4807
4808 fn selection_count<'a>(&self) -> usize {
4809 let mut count = self.selections.len();
4810 if self.pending_selection.is_some() {
4811 count += 1;
4812 }
4813 count
4814 }
4815
4816 pub fn oldest_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
4817 &self,
4818 cx: &AppContext,
4819 ) -> Selection<D> {
4820 let snapshot = self.buffer.read(cx).read(cx);
4821 self.selections
4822 .iter()
4823 .min_by_key(|s| s.id)
4824 .map(|selection| self.resolve_selection(selection, &snapshot))
4825 .or_else(|| self.pending_selection(&snapshot))
4826 .unwrap()
4827 }
4828
4829 pub fn newest_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
4830 &self,
4831 cx: &AppContext,
4832 ) -> Selection<D> {
4833 self.resolve_selection(
4834 self.newest_anchor_selection(),
4835 &self.buffer.read(cx).read(cx),
4836 )
4837 }
4838
4839 pub fn newest_selection_with_snapshot<D: TextDimension + Ord + Sub<D, Output = D>>(
4840 &self,
4841 snapshot: &MultiBufferSnapshot,
4842 ) -> Selection<D> {
4843 self.resolve_selection(self.newest_anchor_selection(), snapshot)
4844 }
4845
4846 pub fn newest_anchor_selection(&self) -> &Selection<Anchor> {
4847 self.pending_selection
4848 .as_ref()
4849 .map(|s| &s.selection)
4850 .or_else(|| self.selections.iter().max_by_key(|s| s.id))
4851 .unwrap()
4852 }
4853
4854 pub fn update_selections<T>(
4855 &mut self,
4856 mut selections: Vec<Selection<T>>,
4857 autoscroll: Option<Autoscroll>,
4858 cx: &mut ViewContext<Self>,
4859 ) where
4860 T: ToOffset + ToPoint + Ord + std::marker::Copy + std::fmt::Debug,
4861 {
4862 let buffer = self.buffer.read(cx).snapshot(cx);
4863 selections.sort_unstable_by_key(|s| s.start);
4864
4865 // Merge overlapping selections.
4866 let mut i = 1;
4867 while i < selections.len() {
4868 if selections[i - 1].end >= selections[i].start {
4869 let removed = selections.remove(i);
4870 if removed.start < selections[i - 1].start {
4871 selections[i - 1].start = removed.start;
4872 }
4873 if removed.end > selections[i - 1].end {
4874 selections[i - 1].end = removed.end;
4875 }
4876 } else {
4877 i += 1;
4878 }
4879 }
4880
4881 if let Some(autoscroll) = autoscroll {
4882 self.request_autoscroll(autoscroll, cx);
4883 }
4884
4885 self.set_selections(
4886 Arc::from_iter(selections.into_iter().map(|selection| {
4887 let end_bias = if selection.end > selection.start {
4888 Bias::Left
4889 } else {
4890 Bias::Right
4891 };
4892 Selection {
4893 id: selection.id,
4894 start: buffer.anchor_after(selection.start),
4895 end: buffer.anchor_at(selection.end, end_bias),
4896 reversed: selection.reversed,
4897 goal: selection.goal,
4898 }
4899 })),
4900 None,
4901 true,
4902 cx,
4903 );
4904 }
4905
4906 /// Compute new ranges for any selections that were located in excerpts that have
4907 /// since been removed.
4908 ///
4909 /// Returns a `HashMap` indicating which selections whose former head position
4910 /// was no longer present. The keys of the map are selection ids. The values are
4911 /// the id of the new excerpt where the head of the selection has been moved.
4912 pub fn refresh_selections(&mut self, cx: &mut ViewContext<Self>) -> HashMap<usize, ExcerptId> {
4913 let snapshot = self.buffer.read(cx).read(cx);
4914 let mut selections_with_lost_position = HashMap::default();
4915
4916 let mut pending_selection = self.pending_selection.take();
4917 if let Some(pending) = pending_selection.as_mut() {
4918 let anchors =
4919 snapshot.refresh_anchors([&pending.selection.start, &pending.selection.end]);
4920 let (_, start, kept_start) = anchors[0].clone();
4921 let (_, end, kept_end) = anchors[1].clone();
4922 let kept_head = if pending.selection.reversed {
4923 kept_start
4924 } else {
4925 kept_end
4926 };
4927 if !kept_head {
4928 selections_with_lost_position.insert(
4929 pending.selection.id,
4930 pending.selection.head().excerpt_id.clone(),
4931 );
4932 }
4933
4934 pending.selection.start = start;
4935 pending.selection.end = end;
4936 }
4937
4938 let anchors_with_status = snapshot.refresh_anchors(
4939 self.selections
4940 .iter()
4941 .flat_map(|selection| [&selection.start, &selection.end]),
4942 );
4943 self.selections = anchors_with_status
4944 .chunks(2)
4945 .map(|selection_anchors| {
4946 let (anchor_ix, start, kept_start) = selection_anchors[0].clone();
4947 let (_, end, kept_end) = selection_anchors[1].clone();
4948 let selection = &self.selections[anchor_ix / 2];
4949 let kept_head = if selection.reversed {
4950 kept_start
4951 } else {
4952 kept_end
4953 };
4954 if !kept_head {
4955 selections_with_lost_position
4956 .insert(selection.id, selection.head().excerpt_id.clone());
4957 }
4958
4959 Selection {
4960 id: selection.id,
4961 start,
4962 end,
4963 reversed: selection.reversed,
4964 goal: selection.goal,
4965 }
4966 })
4967 .collect();
4968 drop(snapshot);
4969
4970 let new_selections = self.local_selections::<usize>(cx);
4971 if !new_selections.is_empty() {
4972 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
4973 }
4974 self.pending_selection = pending_selection;
4975
4976 selections_with_lost_position
4977 }
4978
4979 fn set_selections(
4980 &mut self,
4981 selections: Arc<[Selection<Anchor>]>,
4982 pending_selection: Option<PendingSelection>,
4983 local: bool,
4984 cx: &mut ViewContext<Self>,
4985 ) {
4986 assert!(
4987 !selections.is_empty() || pending_selection.is_some(),
4988 "must have at least one selection"
4989 );
4990
4991 let old_cursor_position = self.newest_anchor_selection().head();
4992
4993 self.selections = selections;
4994 self.pending_selection = pending_selection;
4995 if self.focused && self.leader_replica_id.is_none() {
4996 self.buffer.update(cx, |buffer, cx| {
4997 buffer.set_active_selections(&self.selections, cx)
4998 });
4999 }
5000
5001 let display_map = self
5002 .display_map
5003 .update(cx, |display_map, cx| display_map.snapshot(cx));
5004 let buffer = &display_map.buffer_snapshot;
5005 self.add_selections_state = None;
5006 self.select_next_state = None;
5007 self.select_larger_syntax_node_stack.clear();
5008 self.autoclose_stack.invalidate(&self.selections, &buffer);
5009 self.snippet_stack.invalidate(&self.selections, &buffer);
5010 self.invalidate_rename_range(&buffer, cx);
5011
5012 let new_cursor_position = self.newest_anchor_selection().head();
5013
5014 self.push_to_nav_history(
5015 old_cursor_position.clone(),
5016 Some(new_cursor_position.to_point(&buffer)),
5017 cx,
5018 );
5019
5020 let completion_menu = match self.context_menu.as_mut() {
5021 Some(ContextMenu::Completions(menu)) => Some(menu),
5022 _ => {
5023 self.context_menu.take();
5024 None
5025 }
5026 };
5027
5028 if let Some(completion_menu) = completion_menu {
5029 let cursor_position = new_cursor_position.to_offset(&buffer);
5030 let (word_range, kind) =
5031 buffer.surrounding_word(completion_menu.initial_position.clone());
5032 if kind == Some(CharKind::Word) && word_range.to_inclusive().contains(&cursor_position)
5033 {
5034 let query = Self::completion_query(&buffer, cursor_position);
5035 cx.background()
5036 .block(completion_menu.filter(query.as_deref(), cx.background().clone()));
5037 self.show_completions(&ShowCompletions, cx);
5038 } else {
5039 self.hide_context_menu(cx);
5040 }
5041 }
5042
5043 if old_cursor_position.to_display_point(&display_map).row()
5044 != new_cursor_position.to_display_point(&display_map).row()
5045 {
5046 self.available_code_actions.take();
5047 }
5048 self.refresh_code_actions(cx);
5049 self.refresh_document_highlights(cx);
5050
5051 self.pause_cursor_blinking(cx);
5052 cx.emit(Event::SelectionsChanged { local });
5053 }
5054
5055 pub fn request_autoscroll(&mut self, autoscroll: Autoscroll, cx: &mut ViewContext<Self>) {
5056 self.autoscroll_request = Some((autoscroll, true));
5057 cx.notify();
5058 }
5059
5060 fn request_autoscroll_remotely(&mut self, autoscroll: Autoscroll, cx: &mut ViewContext<Self>) {
5061 self.autoscroll_request = Some((autoscroll, false));
5062 cx.notify();
5063 }
5064
5065 fn transact(
5066 &mut self,
5067 cx: &mut ViewContext<Self>,
5068 update: impl FnOnce(&mut Self, &mut ViewContext<Self>),
5069 ) {
5070 self.start_transaction(cx);
5071 update(self, cx);
5072 self.end_transaction(cx);
5073 }
5074
5075 fn start_transaction(&mut self, cx: &mut ViewContext<Self>) {
5076 self.start_transaction_at(Instant::now(), cx);
5077 }
5078
5079 fn start_transaction_at(&mut self, now: Instant, cx: &mut ViewContext<Self>) {
5080 self.end_selection(cx);
5081 if let Some(tx_id) = self
5082 .buffer
5083 .update(cx, |buffer, cx| buffer.start_transaction_at(now, cx))
5084 {
5085 self.selection_history
5086 .insert(tx_id, (self.selections.clone(), None));
5087 }
5088 }
5089
5090 fn end_transaction(&mut self, cx: &mut ViewContext<Self>) {
5091 self.end_transaction_at(Instant::now(), cx);
5092 }
5093
5094 fn end_transaction_at(&mut self, now: Instant, cx: &mut ViewContext<Self>) {
5095 if let Some(tx_id) = self
5096 .buffer
5097 .update(cx, |buffer, cx| buffer.end_transaction_at(now, cx))
5098 {
5099 if let Some((_, end_selections)) = self.selection_history.get_mut(&tx_id) {
5100 *end_selections = Some(self.selections.clone());
5101 } else {
5102 log::error!("unexpectedly ended a transaction that wasn't started by this editor");
5103 }
5104 }
5105 }
5106
5107 pub fn page_up(&mut self, _: &PageUp, _: &mut ViewContext<Self>) {
5108 log::info!("Editor::page_up");
5109 }
5110
5111 pub fn page_down(&mut self, _: &PageDown, _: &mut ViewContext<Self>) {
5112 log::info!("Editor::page_down");
5113 }
5114
5115 pub fn fold(&mut self, _: &Fold, cx: &mut ViewContext<Self>) {
5116 let mut fold_ranges = Vec::new();
5117
5118 let selections = self.local_selections::<Point>(cx);
5119 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
5120 for selection in selections {
5121 let range = selection.display_range(&display_map).sorted();
5122 let buffer_start_row = range.start.to_point(&display_map).row;
5123
5124 for row in (0..=range.end.row()).rev() {
5125 if self.is_line_foldable(&display_map, row) && !display_map.is_line_folded(row) {
5126 let fold_range = self.foldable_range_for_line(&display_map, row);
5127 if fold_range.end.row >= buffer_start_row {
5128 fold_ranges.push(fold_range);
5129 if row <= range.start.row() {
5130 break;
5131 }
5132 }
5133 }
5134 }
5135 }
5136
5137 self.fold_ranges(fold_ranges, cx);
5138 }
5139
5140 pub fn unfold(&mut self, _: &Unfold, cx: &mut ViewContext<Self>) {
5141 let selections = self.local_selections::<Point>(cx);
5142 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
5143 let buffer = &display_map.buffer_snapshot;
5144 let ranges = selections
5145 .iter()
5146 .map(|s| {
5147 let range = s.display_range(&display_map).sorted();
5148 let mut start = range.start.to_point(&display_map);
5149 let mut end = range.end.to_point(&display_map);
5150 start.column = 0;
5151 end.column = buffer.line_len(end.row);
5152 start..end
5153 })
5154 .collect::<Vec<_>>();
5155 self.unfold_ranges(ranges, cx);
5156 }
5157
5158 fn is_line_foldable(&self, display_map: &DisplaySnapshot, display_row: u32) -> bool {
5159 let max_point = display_map.max_point();
5160 if display_row >= max_point.row() {
5161 false
5162 } else {
5163 let (start_indent, is_blank) = display_map.line_indent(display_row);
5164 if is_blank {
5165 false
5166 } else {
5167 for display_row in display_row + 1..=max_point.row() {
5168 let (indent, is_blank) = display_map.line_indent(display_row);
5169 if !is_blank {
5170 return indent > start_indent;
5171 }
5172 }
5173 false
5174 }
5175 }
5176 }
5177
5178 fn foldable_range_for_line(
5179 &self,
5180 display_map: &DisplaySnapshot,
5181 start_row: u32,
5182 ) -> Range<Point> {
5183 let max_point = display_map.max_point();
5184
5185 let (start_indent, _) = display_map.line_indent(start_row);
5186 let start = DisplayPoint::new(start_row, display_map.line_len(start_row));
5187 let mut end = None;
5188 for row in start_row + 1..=max_point.row() {
5189 let (indent, is_blank) = display_map.line_indent(row);
5190 if !is_blank && indent <= start_indent {
5191 end = Some(DisplayPoint::new(row - 1, display_map.line_len(row - 1)));
5192 break;
5193 }
5194 }
5195
5196 let end = end.unwrap_or(max_point);
5197 return start.to_point(display_map)..end.to_point(display_map);
5198 }
5199
5200 pub fn fold_selected_ranges(&mut self, _: &FoldSelectedRanges, cx: &mut ViewContext<Self>) {
5201 let selections = self.local_selections::<Point>(cx);
5202 let ranges = selections.into_iter().map(|s| s.start..s.end);
5203 self.fold_ranges(ranges, cx);
5204 }
5205
5206 fn fold_ranges<T: ToOffset>(
5207 &mut self,
5208 ranges: impl IntoIterator<Item = Range<T>>,
5209 cx: &mut ViewContext<Self>,
5210 ) {
5211 let mut ranges = ranges.into_iter().peekable();
5212 if ranges.peek().is_some() {
5213 self.display_map.update(cx, |map, cx| map.fold(ranges, cx));
5214 self.request_autoscroll(Autoscroll::Fit, cx);
5215 cx.notify();
5216 }
5217 }
5218
5219 fn unfold_ranges<T: ToOffset>(&mut self, ranges: Vec<Range<T>>, cx: &mut ViewContext<Self>) {
5220 if !ranges.is_empty() {
5221 self.display_map
5222 .update(cx, |map, cx| map.unfold(ranges, cx));
5223 self.request_autoscroll(Autoscroll::Fit, cx);
5224 cx.notify();
5225 }
5226 }
5227
5228 pub fn insert_blocks(
5229 &mut self,
5230 blocks: impl IntoIterator<Item = BlockProperties<Anchor>>,
5231 cx: &mut ViewContext<Self>,
5232 ) -> Vec<BlockId> {
5233 let blocks = self
5234 .display_map
5235 .update(cx, |display_map, cx| display_map.insert_blocks(blocks, cx));
5236 self.request_autoscroll(Autoscroll::Fit, cx);
5237 blocks
5238 }
5239
5240 pub fn replace_blocks(
5241 &mut self,
5242 blocks: HashMap<BlockId, RenderBlock>,
5243 cx: &mut ViewContext<Self>,
5244 ) {
5245 self.display_map
5246 .update(cx, |display_map, _| display_map.replace_blocks(blocks));
5247 self.request_autoscroll(Autoscroll::Fit, cx);
5248 }
5249
5250 pub fn remove_blocks(&mut self, block_ids: HashSet<BlockId>, cx: &mut ViewContext<Self>) {
5251 self.display_map.update(cx, |display_map, cx| {
5252 display_map.remove_blocks(block_ids, cx)
5253 });
5254 }
5255
5256 pub fn longest_row(&self, cx: &mut MutableAppContext) -> u32 {
5257 self.display_map
5258 .update(cx, |map, cx| map.snapshot(cx))
5259 .longest_row()
5260 }
5261
5262 pub fn max_point(&self, cx: &mut MutableAppContext) -> DisplayPoint {
5263 self.display_map
5264 .update(cx, |map, cx| map.snapshot(cx))
5265 .max_point()
5266 }
5267
5268 pub fn text(&self, cx: &AppContext) -> String {
5269 self.buffer.read(cx).read(cx).text()
5270 }
5271
5272 pub fn set_text(&mut self, text: impl Into<String>, cx: &mut ViewContext<Self>) {
5273 self.buffer
5274 .read(cx)
5275 .as_singleton()
5276 .expect("you can only call set_text on editors for singleton buffers")
5277 .update(cx, |buffer, cx| buffer.set_text(text, cx));
5278 }
5279
5280 pub fn display_text(&self, cx: &mut MutableAppContext) -> String {
5281 self.display_map
5282 .update(cx, |map, cx| map.snapshot(cx))
5283 .text()
5284 }
5285
5286 pub fn soft_wrap_mode(&self, cx: &AppContext) -> SoftWrap {
5287 let language = self.language(cx);
5288 let settings = cx.global::<Settings>();
5289 let mode = self
5290 .soft_wrap_mode_override
5291 .unwrap_or_else(|| settings.soft_wrap(language));
5292 match mode {
5293 settings::SoftWrap::None => SoftWrap::None,
5294 settings::SoftWrap::EditorWidth => SoftWrap::EditorWidth,
5295 settings::SoftWrap::PreferredLineLength => {
5296 SoftWrap::Column(settings.preferred_line_length(language))
5297 }
5298 }
5299 }
5300
5301 pub fn set_soft_wrap_mode(&mut self, mode: settings::SoftWrap, cx: &mut ViewContext<Self>) {
5302 self.soft_wrap_mode_override = Some(mode);
5303 cx.notify();
5304 }
5305
5306 pub fn set_wrap_width(&self, width: Option<f32>, cx: &mut MutableAppContext) -> bool {
5307 self.display_map
5308 .update(cx, |map, cx| map.set_wrap_width(width, cx))
5309 }
5310
5311 pub fn highlight_rows(&mut self, rows: Option<Range<u32>>) {
5312 self.highlighted_rows = rows;
5313 }
5314
5315 pub fn highlighted_rows(&self) -> Option<Range<u32>> {
5316 self.highlighted_rows.clone()
5317 }
5318
5319 pub fn highlight_background<T: 'static>(
5320 &mut self,
5321 ranges: Vec<Range<Anchor>>,
5322 color: Color,
5323 cx: &mut ViewContext<Self>,
5324 ) {
5325 self.background_highlights
5326 .insert(TypeId::of::<T>(), (color, ranges));
5327 cx.notify();
5328 }
5329
5330 pub fn clear_background_highlights<T: 'static>(
5331 &mut self,
5332 cx: &mut ViewContext<Self>,
5333 ) -> Option<(Color, Vec<Range<Anchor>>)> {
5334 cx.notify();
5335 self.background_highlights.remove(&TypeId::of::<T>())
5336 }
5337
5338 #[cfg(feature = "test-support")]
5339 pub fn all_background_highlights(
5340 &mut self,
5341 cx: &mut ViewContext<Self>,
5342 ) -> Vec<(Range<DisplayPoint>, Color)> {
5343 let snapshot = self.snapshot(cx);
5344 let buffer = &snapshot.buffer_snapshot;
5345 let start = buffer.anchor_before(0);
5346 let end = buffer.anchor_after(buffer.len());
5347 self.background_highlights_in_range(start..end, &snapshot)
5348 }
5349
5350 pub fn background_highlights_for_type<T: 'static>(&self) -> Option<(Color, &[Range<Anchor>])> {
5351 self.background_highlights
5352 .get(&TypeId::of::<T>())
5353 .map(|(color, ranges)| (*color, ranges.as_slice()))
5354 }
5355
5356 pub fn background_highlights_in_range(
5357 &self,
5358 search_range: Range<Anchor>,
5359 display_snapshot: &DisplaySnapshot,
5360 ) -> Vec<(Range<DisplayPoint>, Color)> {
5361 let mut results = Vec::new();
5362 let buffer = &display_snapshot.buffer_snapshot;
5363 for (color, ranges) in self.background_highlights.values() {
5364 let start_ix = match ranges.binary_search_by(|probe| {
5365 let cmp = probe.end.cmp(&search_range.start, &buffer).unwrap();
5366 if cmp.is_gt() {
5367 Ordering::Greater
5368 } else {
5369 Ordering::Less
5370 }
5371 }) {
5372 Ok(i) | Err(i) => i,
5373 };
5374 for range in &ranges[start_ix..] {
5375 if range.start.cmp(&search_range.end, &buffer).unwrap().is_ge() {
5376 break;
5377 }
5378 let start = range
5379 .start
5380 .to_point(buffer)
5381 .to_display_point(display_snapshot);
5382 let end = range
5383 .end
5384 .to_point(buffer)
5385 .to_display_point(display_snapshot);
5386 results.push((start..end, *color))
5387 }
5388 }
5389 results
5390 }
5391
5392 pub fn highlight_text<T: 'static>(
5393 &mut self,
5394 ranges: Vec<Range<Anchor>>,
5395 style: HighlightStyle,
5396 cx: &mut ViewContext<Self>,
5397 ) {
5398 self.display_map.update(cx, |map, _| {
5399 map.highlight_text(TypeId::of::<T>(), ranges, style)
5400 });
5401 cx.notify();
5402 }
5403
5404 pub fn clear_text_highlights<T: 'static>(
5405 &mut self,
5406 cx: &mut ViewContext<Self>,
5407 ) -> Option<Arc<(HighlightStyle, Vec<Range<Anchor>>)>> {
5408 cx.notify();
5409 self.display_map
5410 .update(cx, |map, _| map.clear_text_highlights(TypeId::of::<T>()))
5411 }
5412
5413 fn next_blink_epoch(&mut self) -> usize {
5414 self.blink_epoch += 1;
5415 self.blink_epoch
5416 }
5417
5418 fn pause_cursor_blinking(&mut self, cx: &mut ViewContext<Self>) {
5419 if !self.focused {
5420 return;
5421 }
5422
5423 self.show_local_cursors = true;
5424 cx.notify();
5425
5426 let epoch = self.next_blink_epoch();
5427 cx.spawn(|this, mut cx| {
5428 let this = this.downgrade();
5429 async move {
5430 Timer::after(CURSOR_BLINK_INTERVAL).await;
5431 if let Some(this) = this.upgrade(&cx) {
5432 this.update(&mut cx, |this, cx| this.resume_cursor_blinking(epoch, cx))
5433 }
5434 }
5435 })
5436 .detach();
5437 }
5438
5439 fn resume_cursor_blinking(&mut self, epoch: usize, cx: &mut ViewContext<Self>) {
5440 if epoch == self.blink_epoch {
5441 self.blinking_paused = false;
5442 self.blink_cursors(epoch, cx);
5443 }
5444 }
5445
5446 fn blink_cursors(&mut self, epoch: usize, cx: &mut ViewContext<Self>) {
5447 if epoch == self.blink_epoch && self.focused && !self.blinking_paused {
5448 self.show_local_cursors = !self.show_local_cursors;
5449 cx.notify();
5450
5451 let epoch = self.next_blink_epoch();
5452 cx.spawn(|this, mut cx| {
5453 let this = this.downgrade();
5454 async move {
5455 Timer::after(CURSOR_BLINK_INTERVAL).await;
5456 if let Some(this) = this.upgrade(&cx) {
5457 this.update(&mut cx, |this, cx| this.blink_cursors(epoch, cx));
5458 }
5459 }
5460 })
5461 .detach();
5462 }
5463 }
5464
5465 pub fn show_local_cursors(&self) -> bool {
5466 self.show_local_cursors && self.focused
5467 }
5468
5469 fn on_buffer_changed(&mut self, _: ModelHandle<MultiBuffer>, cx: &mut ViewContext<Self>) {
5470 cx.notify();
5471 }
5472
5473 fn on_buffer_event(
5474 &mut self,
5475 _: ModelHandle<MultiBuffer>,
5476 event: &language::Event,
5477 cx: &mut ViewContext<Self>,
5478 ) {
5479 match event {
5480 language::Event::Edited { local } => {
5481 self.refresh_active_diagnostics(cx);
5482 self.refresh_code_actions(cx);
5483 cx.emit(Event::Edited { local: *local });
5484 }
5485 language::Event::Dirtied => cx.emit(Event::Dirtied),
5486 language::Event::Saved => cx.emit(Event::Saved),
5487 language::Event::FileHandleChanged => cx.emit(Event::TitleChanged),
5488 language::Event::Reloaded => cx.emit(Event::TitleChanged),
5489 language::Event::Closed => cx.emit(Event::Closed),
5490 language::Event::DiagnosticsUpdated => {
5491 self.refresh_active_diagnostics(cx);
5492 }
5493 _ => {}
5494 }
5495 }
5496
5497 fn on_display_map_changed(&mut self, _: ModelHandle<DisplayMap>, cx: &mut ViewContext<Self>) {
5498 cx.notify();
5499 }
5500
5501 pub fn set_searchable(&mut self, searchable: bool) {
5502 self.searchable = searchable;
5503 }
5504
5505 pub fn searchable(&self) -> bool {
5506 self.searchable
5507 }
5508
5509 fn open_excerpts(workspace: &mut Workspace, _: &OpenExcerpts, cx: &mut ViewContext<Workspace>) {
5510 let active_item = workspace.active_item(cx);
5511 let editor_handle = if let Some(editor) = active_item
5512 .as_ref()
5513 .and_then(|item| item.act_as::<Self>(cx))
5514 {
5515 editor
5516 } else {
5517 cx.propagate_action();
5518 return;
5519 };
5520
5521 let editor = editor_handle.read(cx);
5522 let buffer = editor.buffer.read(cx);
5523 if buffer.is_singleton() {
5524 cx.propagate_action();
5525 return;
5526 }
5527
5528 let mut new_selections_by_buffer = HashMap::default();
5529 for selection in editor.local_selections::<usize>(cx) {
5530 for (buffer, mut range) in
5531 buffer.range_to_buffer_ranges(selection.start..selection.end, cx)
5532 {
5533 if selection.reversed {
5534 mem::swap(&mut range.start, &mut range.end);
5535 }
5536 new_selections_by_buffer
5537 .entry(buffer)
5538 .or_insert(Vec::new())
5539 .push(range)
5540 }
5541 }
5542
5543 editor_handle.update(cx, |editor, cx| {
5544 editor.push_to_nav_history(editor.newest_anchor_selection().head(), None, cx);
5545 });
5546 let nav_history = workspace.active_pane().read(cx).nav_history().clone();
5547 nav_history.borrow_mut().disable();
5548
5549 // We defer the pane interaction because we ourselves are a workspace item
5550 // and activating a new item causes the pane to call a method on us reentrantly,
5551 // which panics if we're on the stack.
5552 cx.defer(move |workspace, cx| {
5553 workspace.activate_next_pane(cx);
5554
5555 for (buffer, ranges) in new_selections_by_buffer.into_iter() {
5556 let editor = workspace.open_project_item::<Self>(buffer, cx);
5557 editor.update(cx, |editor, cx| {
5558 editor.select_ranges(ranges, Some(Autoscroll::Newest), cx);
5559 });
5560 }
5561
5562 nav_history.borrow_mut().enable();
5563 });
5564 }
5565}
5566
5567impl EditorSnapshot {
5568 pub fn is_focused(&self) -> bool {
5569 self.is_focused
5570 }
5571
5572 pub fn placeholder_text(&self) -> Option<&Arc<str>> {
5573 self.placeholder_text.as_ref()
5574 }
5575
5576 pub fn scroll_position(&self) -> Vector2F {
5577 compute_scroll_position(
5578 &self.display_snapshot,
5579 self.scroll_position,
5580 &self.scroll_top_anchor,
5581 )
5582 }
5583}
5584
5585impl Deref for EditorSnapshot {
5586 type Target = DisplaySnapshot;
5587
5588 fn deref(&self) -> &Self::Target {
5589 &self.display_snapshot
5590 }
5591}
5592
5593fn compute_scroll_position(
5594 snapshot: &DisplaySnapshot,
5595 mut scroll_position: Vector2F,
5596 scroll_top_anchor: &Anchor,
5597) -> Vector2F {
5598 if *scroll_top_anchor != Anchor::min() {
5599 let scroll_top = scroll_top_anchor.to_display_point(snapshot).row() as f32;
5600 scroll_position.set_y(scroll_top + scroll_position.y());
5601 } else {
5602 scroll_position.set_y(0.);
5603 }
5604 scroll_position
5605}
5606
5607#[derive(Copy, Clone)]
5608pub enum Event {
5609 Activate,
5610 Edited { local: bool },
5611 Blurred,
5612 Dirtied,
5613 Saved,
5614 TitleChanged,
5615 SelectionsChanged { local: bool },
5616 ScrollPositionChanged { local: bool },
5617 Closed,
5618}
5619
5620pub struct EditorFocused(pub ViewHandle<Editor>);
5621pub struct EditorBlurred(pub ViewHandle<Editor>);
5622pub struct EditorReleased(pub WeakViewHandle<Editor>);
5623
5624impl Entity for Editor {
5625 type Event = Event;
5626
5627 fn release(&mut self, cx: &mut MutableAppContext) {
5628 cx.emit_global(EditorReleased(self.handle.clone()));
5629 }
5630}
5631
5632impl View for Editor {
5633 fn render(&mut self, cx: &mut RenderContext<Self>) -> ElementBox {
5634 let style = self.style(cx);
5635 self.display_map.update(cx, |map, cx| {
5636 map.set_font(style.text.font_id, style.text.font_size, cx)
5637 });
5638 EditorElement::new(self.handle.clone(), style.clone(), self.cursor_shape).boxed()
5639 }
5640
5641 fn ui_name() -> &'static str {
5642 "Editor"
5643 }
5644
5645 fn on_focus(&mut self, cx: &mut ViewContext<Self>) {
5646 let focused_event = EditorFocused(cx.handle());
5647 cx.emit_global(focused_event);
5648 if let Some(rename) = self.pending_rename.as_ref() {
5649 cx.focus(&rename.editor);
5650 } else {
5651 self.focused = true;
5652 self.blink_cursors(self.blink_epoch, cx);
5653 self.buffer.update(cx, |buffer, cx| {
5654 buffer.finalize_last_transaction(cx);
5655 if self.leader_replica_id.is_none() {
5656 buffer.set_active_selections(&self.selections, cx);
5657 }
5658 });
5659 }
5660 }
5661
5662 fn on_blur(&mut self, cx: &mut ViewContext<Self>) {
5663 let blurred_event = EditorBlurred(cx.handle());
5664 cx.emit_global(blurred_event);
5665 self.focused = false;
5666 self.buffer
5667 .update(cx, |buffer, cx| buffer.remove_active_selections(cx));
5668 self.hide_context_menu(cx);
5669 cx.emit(Event::Blurred);
5670 cx.notify();
5671 }
5672
5673 fn keymap_context(&self, _: &AppContext) -> gpui::keymap::Context {
5674 let mut cx = Self::default_keymap_context();
5675 let mode = match self.mode {
5676 EditorMode::SingleLine => "single_line",
5677 EditorMode::AutoHeight { .. } => "auto_height",
5678 EditorMode::Full => "full",
5679 };
5680 cx.map.insert("mode".into(), mode.into());
5681 if self.pending_rename.is_some() {
5682 cx.set.insert("renaming".into());
5683 }
5684 match self.context_menu.as_ref() {
5685 Some(ContextMenu::Completions(_)) => {
5686 cx.set.insert("showing_completions".into());
5687 }
5688 Some(ContextMenu::CodeActions(_)) => {
5689 cx.set.insert("showing_code_actions".into());
5690 }
5691 None => {}
5692 }
5693 cx
5694 }
5695}
5696
5697fn build_style(
5698 settings: &Settings,
5699 get_field_editor_theme: Option<GetFieldEditorTheme>,
5700 override_text_style: Option<&OverrideTextStyle>,
5701 cx: &AppContext,
5702) -> EditorStyle {
5703 let font_cache = cx.font_cache();
5704
5705 let mut theme = settings.theme.editor.clone();
5706 let mut style = if let Some(get_field_editor_theme) = get_field_editor_theme {
5707 let field_editor_theme = get_field_editor_theme(&settings.theme);
5708 theme.text_color = field_editor_theme.text.color;
5709 theme.selection = field_editor_theme.selection;
5710 theme.background = field_editor_theme
5711 .container
5712 .background_color
5713 .unwrap_or_default();
5714 EditorStyle {
5715 text: field_editor_theme.text,
5716 placeholder_text: field_editor_theme.placeholder_text,
5717 theme,
5718 }
5719 } else {
5720 let font_family_id = settings.buffer_font_family;
5721 let font_family_name = cx.font_cache().family_name(font_family_id).unwrap();
5722 let font_properties = Default::default();
5723 let font_id = font_cache
5724 .select_font(font_family_id, &font_properties)
5725 .unwrap();
5726 let font_size = settings.buffer_font_size;
5727 EditorStyle {
5728 text: TextStyle {
5729 color: settings.theme.editor.text_color,
5730 font_family_name,
5731 font_family_id,
5732 font_id,
5733 font_size,
5734 font_properties,
5735 underline: Default::default(),
5736 },
5737 placeholder_text: None,
5738 theme,
5739 }
5740 };
5741
5742 if let Some(highlight_style) = override_text_style.and_then(|build_style| build_style(&style)) {
5743 if let Some(highlighted) = style
5744 .text
5745 .clone()
5746 .highlight(highlight_style, font_cache)
5747 .log_err()
5748 {
5749 style.text = highlighted;
5750 }
5751 }
5752
5753 style
5754}
5755
5756trait SelectionExt {
5757 fn offset_range(&self, buffer: &MultiBufferSnapshot) -> Range<usize>;
5758 fn point_range(&self, buffer: &MultiBufferSnapshot) -> Range<Point>;
5759 fn display_range(&self, map: &DisplaySnapshot) -> Range<DisplayPoint>;
5760 fn spanned_rows(&self, include_end_if_at_line_start: bool, map: &DisplaySnapshot)
5761 -> Range<u32>;
5762}
5763
5764impl<T: ToPoint + ToOffset> SelectionExt for Selection<T> {
5765 fn point_range(&self, buffer: &MultiBufferSnapshot) -> Range<Point> {
5766 let start = self.start.to_point(buffer);
5767 let end = self.end.to_point(buffer);
5768 if self.reversed {
5769 end..start
5770 } else {
5771 start..end
5772 }
5773 }
5774
5775 fn offset_range(&self, buffer: &MultiBufferSnapshot) -> Range<usize> {
5776 let start = self.start.to_offset(buffer);
5777 let end = self.end.to_offset(buffer);
5778 if self.reversed {
5779 end..start
5780 } else {
5781 start..end
5782 }
5783 }
5784
5785 fn display_range(&self, map: &DisplaySnapshot) -> Range<DisplayPoint> {
5786 let start = self
5787 .start
5788 .to_point(&map.buffer_snapshot)
5789 .to_display_point(map);
5790 let end = self
5791 .end
5792 .to_point(&map.buffer_snapshot)
5793 .to_display_point(map);
5794 if self.reversed {
5795 end..start
5796 } else {
5797 start..end
5798 }
5799 }
5800
5801 fn spanned_rows(
5802 &self,
5803 include_end_if_at_line_start: bool,
5804 map: &DisplaySnapshot,
5805 ) -> Range<u32> {
5806 let start = self.start.to_point(&map.buffer_snapshot);
5807 let mut end = self.end.to_point(&map.buffer_snapshot);
5808 if !include_end_if_at_line_start && start.row != end.row && end.column == 0 {
5809 end.row -= 1;
5810 }
5811
5812 let buffer_start = map.prev_line_boundary(start).0;
5813 let buffer_end = map.next_line_boundary(end).0;
5814 buffer_start.row..buffer_end.row + 1
5815 }
5816}
5817
5818impl<T: InvalidationRegion> InvalidationStack<T> {
5819 fn invalidate<S>(&mut self, selections: &[Selection<S>], buffer: &MultiBufferSnapshot)
5820 where
5821 S: Clone + ToOffset,
5822 {
5823 while let Some(region) = self.last() {
5824 let all_selections_inside_invalidation_ranges =
5825 if selections.len() == region.ranges().len() {
5826 selections
5827 .iter()
5828 .zip(region.ranges().iter().map(|r| r.to_offset(&buffer)))
5829 .all(|(selection, invalidation_range)| {
5830 let head = selection.head().to_offset(&buffer);
5831 invalidation_range.start <= head && invalidation_range.end >= head
5832 })
5833 } else {
5834 false
5835 };
5836
5837 if all_selections_inside_invalidation_ranges {
5838 break;
5839 } else {
5840 self.pop();
5841 }
5842 }
5843 }
5844}
5845
5846impl<T> Default for InvalidationStack<T> {
5847 fn default() -> Self {
5848 Self(Default::default())
5849 }
5850}
5851
5852impl<T> Deref for InvalidationStack<T> {
5853 type Target = Vec<T>;
5854
5855 fn deref(&self) -> &Self::Target {
5856 &self.0
5857 }
5858}
5859
5860impl<T> DerefMut for InvalidationStack<T> {
5861 fn deref_mut(&mut self) -> &mut Self::Target {
5862 &mut self.0
5863 }
5864}
5865
5866impl InvalidationRegion for BracketPairState {
5867 fn ranges(&self) -> &[Range<Anchor>] {
5868 &self.ranges
5869 }
5870}
5871
5872impl InvalidationRegion for SnippetState {
5873 fn ranges(&self) -> &[Range<Anchor>] {
5874 &self.ranges[self.active_index]
5875 }
5876}
5877
5878impl Deref for EditorStyle {
5879 type Target = theme::Editor;
5880
5881 fn deref(&self) -> &Self::Target {
5882 &self.theme
5883 }
5884}
5885
5886pub fn diagnostic_block_renderer(diagnostic: Diagnostic, is_valid: bool) -> RenderBlock {
5887 let mut highlighted_lines = Vec::new();
5888 for line in diagnostic.message.lines() {
5889 highlighted_lines.push(highlight_diagnostic_message(line));
5890 }
5891
5892 Arc::new(move |cx: &BlockContext| {
5893 let settings = cx.global::<Settings>();
5894 let theme = &settings.theme.editor;
5895 let style = diagnostic_style(diagnostic.severity, is_valid, theme);
5896 let font_size = (style.text_scale_factor * settings.buffer_font_size).round();
5897 Flex::column()
5898 .with_children(highlighted_lines.iter().map(|(line, highlights)| {
5899 Label::new(
5900 line.clone(),
5901 style.message.clone().with_font_size(font_size),
5902 )
5903 .with_highlights(highlights.clone())
5904 .contained()
5905 .with_margin_left(cx.anchor_x)
5906 .boxed()
5907 }))
5908 .aligned()
5909 .left()
5910 .boxed()
5911 })
5912}
5913
5914pub fn highlight_diagnostic_message(message: &str) -> (String, Vec<usize>) {
5915 let mut message_without_backticks = String::new();
5916 let mut prev_offset = 0;
5917 let mut inside_block = false;
5918 let mut highlights = Vec::new();
5919 for (match_ix, (offset, _)) in message
5920 .match_indices('`')
5921 .chain([(message.len(), "")])
5922 .enumerate()
5923 {
5924 message_without_backticks.push_str(&message[prev_offset..offset]);
5925 if inside_block {
5926 highlights.extend(prev_offset - match_ix..offset - match_ix);
5927 }
5928
5929 inside_block = !inside_block;
5930 prev_offset = offset + 1;
5931 }
5932
5933 (message_without_backticks, highlights)
5934}
5935
5936pub fn diagnostic_style(
5937 severity: DiagnosticSeverity,
5938 valid: bool,
5939 theme: &theme::Editor,
5940) -> DiagnosticStyle {
5941 match (severity, valid) {
5942 (DiagnosticSeverity::ERROR, true) => theme.error_diagnostic.clone(),
5943 (DiagnosticSeverity::ERROR, false) => theme.invalid_error_diagnostic.clone(),
5944 (DiagnosticSeverity::WARNING, true) => theme.warning_diagnostic.clone(),
5945 (DiagnosticSeverity::WARNING, false) => theme.invalid_warning_diagnostic.clone(),
5946 (DiagnosticSeverity::INFORMATION, true) => theme.information_diagnostic.clone(),
5947 (DiagnosticSeverity::INFORMATION, false) => theme.invalid_information_diagnostic.clone(),
5948 (DiagnosticSeverity::HINT, true) => theme.hint_diagnostic.clone(),
5949 (DiagnosticSeverity::HINT, false) => theme.invalid_hint_diagnostic.clone(),
5950 _ => theme.invalid_hint_diagnostic.clone(),
5951 }
5952}
5953
5954pub fn combine_syntax_and_fuzzy_match_highlights(
5955 text: &str,
5956 default_style: HighlightStyle,
5957 syntax_ranges: impl Iterator<Item = (Range<usize>, HighlightStyle)>,
5958 match_indices: &[usize],
5959) -> Vec<(Range<usize>, HighlightStyle)> {
5960 let mut result = Vec::new();
5961 let mut match_indices = match_indices.iter().copied().peekable();
5962
5963 for (range, mut syntax_highlight) in syntax_ranges.chain([(usize::MAX..0, Default::default())])
5964 {
5965 syntax_highlight.weight = None;
5966
5967 // Add highlights for any fuzzy match characters before the next
5968 // syntax highlight range.
5969 while let Some(&match_index) = match_indices.peek() {
5970 if match_index >= range.start {
5971 break;
5972 }
5973 match_indices.next();
5974 let end_index = char_ix_after(match_index, text);
5975 let mut match_style = default_style;
5976 match_style.weight = Some(fonts::Weight::BOLD);
5977 result.push((match_index..end_index, match_style));
5978 }
5979
5980 if range.start == usize::MAX {
5981 break;
5982 }
5983
5984 // Add highlights for any fuzzy match characters within the
5985 // syntax highlight range.
5986 let mut offset = range.start;
5987 while let Some(&match_index) = match_indices.peek() {
5988 if match_index >= range.end {
5989 break;
5990 }
5991
5992 match_indices.next();
5993 if match_index > offset {
5994 result.push((offset..match_index, syntax_highlight));
5995 }
5996
5997 let mut end_index = char_ix_after(match_index, text);
5998 while let Some(&next_match_index) = match_indices.peek() {
5999 if next_match_index == end_index && next_match_index < range.end {
6000 end_index = char_ix_after(next_match_index, text);
6001 match_indices.next();
6002 } else {
6003 break;
6004 }
6005 }
6006
6007 let mut match_style = syntax_highlight;
6008 match_style.weight = Some(fonts::Weight::BOLD);
6009 result.push((match_index..end_index, match_style));
6010 offset = end_index;
6011 }
6012
6013 if offset < range.end {
6014 result.push((offset..range.end, syntax_highlight));
6015 }
6016 }
6017
6018 fn char_ix_after(ix: usize, text: &str) -> usize {
6019 ix + text[ix..].chars().next().unwrap().len_utf8()
6020 }
6021
6022 result
6023}
6024
6025pub fn styled_runs_for_code_label<'a>(
6026 label: &'a CodeLabel,
6027 syntax_theme: &'a theme::SyntaxTheme,
6028) -> impl 'a + Iterator<Item = (Range<usize>, HighlightStyle)> {
6029 let fade_out = HighlightStyle {
6030 fade_out: Some(0.35),
6031 ..Default::default()
6032 };
6033
6034 let mut prev_end = label.filter_range.end;
6035 label
6036 .runs
6037 .iter()
6038 .enumerate()
6039 .flat_map(move |(ix, (range, highlight_id))| {
6040 let style = if let Some(style) = highlight_id.style(syntax_theme) {
6041 style
6042 } else {
6043 return Default::default();
6044 };
6045 let mut muted_style = style.clone();
6046 muted_style.highlight(fade_out);
6047
6048 let mut runs = SmallVec::<[(Range<usize>, HighlightStyle); 3]>::new();
6049 if range.start >= label.filter_range.end {
6050 if range.start > prev_end {
6051 runs.push((prev_end..range.start, fade_out));
6052 }
6053 runs.push((range.clone(), muted_style));
6054 } else if range.end <= label.filter_range.end {
6055 runs.push((range.clone(), style));
6056 } else {
6057 runs.push((range.start..label.filter_range.end, style));
6058 runs.push((label.filter_range.end..range.end, muted_style));
6059 }
6060 prev_end = cmp::max(prev_end, range.end);
6061
6062 if ix + 1 == label.runs.len() && label.text.len() > prev_end {
6063 runs.push((prev_end..label.text.len(), fade_out));
6064 }
6065
6066 runs
6067 })
6068}
6069
6070#[cfg(test)]
6071mod tests {
6072 use crate::test::marked_text_by;
6073
6074 use super::*;
6075 use gpui::{
6076 geometry::rect::RectF,
6077 platform::{WindowBounds, WindowOptions},
6078 };
6079 use language::{LanguageConfig, LanguageServerConfig};
6080 use lsp::FakeLanguageServer;
6081 use project::FakeFs;
6082 use smol::stream::StreamExt;
6083 use std::{cell::RefCell, rc::Rc, time::Instant};
6084 use text::Point;
6085 use unindent::Unindent;
6086 use util::test::sample_text;
6087 use workspace::FollowableItem;
6088
6089 #[gpui::test]
6090 fn test_undo_redo_with_selection_restoration(cx: &mut MutableAppContext) {
6091 populate_settings(cx);
6092 let mut now = Instant::now();
6093 let buffer = cx.add_model(|cx| language::Buffer::new(0, "123456", cx));
6094 let group_interval = buffer.read(cx).transaction_group_interval();
6095 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
6096 let (_, editor) = cx.add_window(Default::default(), |cx| build_editor(buffer.clone(), cx));
6097
6098 editor.update(cx, |editor, cx| {
6099 editor.start_transaction_at(now, cx);
6100 editor.select_ranges([2..4], None, cx);
6101 editor.insert("cd", cx);
6102 editor.end_transaction_at(now, cx);
6103 assert_eq!(editor.text(cx), "12cd56");
6104 assert_eq!(editor.selected_ranges(cx), vec![4..4]);
6105
6106 editor.start_transaction_at(now, cx);
6107 editor.select_ranges([4..5], None, cx);
6108 editor.insert("e", cx);
6109 editor.end_transaction_at(now, cx);
6110 assert_eq!(editor.text(cx), "12cde6");
6111 assert_eq!(editor.selected_ranges(cx), vec![5..5]);
6112
6113 now += group_interval + Duration::from_millis(1);
6114 editor.select_ranges([2..2], None, cx);
6115
6116 // Simulate an edit in another editor
6117 buffer.update(cx, |buffer, cx| {
6118 buffer.start_transaction_at(now, cx);
6119 buffer.edit([0..1], "a", cx);
6120 buffer.edit([1..1], "b", cx);
6121 buffer.end_transaction_at(now, cx);
6122 });
6123
6124 assert_eq!(editor.text(cx), "ab2cde6");
6125 assert_eq!(editor.selected_ranges(cx), vec![3..3]);
6126
6127 // Last transaction happened past the group interval in a different editor.
6128 // Undo it individually and don't restore selections.
6129 editor.undo(&Undo, cx);
6130 assert_eq!(editor.text(cx), "12cde6");
6131 assert_eq!(editor.selected_ranges(cx), vec![2..2]);
6132
6133 // First two transactions happened within the group interval in this editor.
6134 // Undo them together and restore selections.
6135 editor.undo(&Undo, cx);
6136 editor.undo(&Undo, cx); // Undo stack is empty here, so this is a no-op.
6137 assert_eq!(editor.text(cx), "123456");
6138 assert_eq!(editor.selected_ranges(cx), vec![0..0]);
6139
6140 // Redo the first two transactions together.
6141 editor.redo(&Redo, cx);
6142 assert_eq!(editor.text(cx), "12cde6");
6143 assert_eq!(editor.selected_ranges(cx), vec![5..5]);
6144
6145 // Redo the last transaction on its own.
6146 editor.redo(&Redo, cx);
6147 assert_eq!(editor.text(cx), "ab2cde6");
6148 assert_eq!(editor.selected_ranges(cx), vec![6..6]);
6149
6150 // Test empty transactions.
6151 editor.start_transaction_at(now, cx);
6152 editor.end_transaction_at(now, cx);
6153 editor.undo(&Undo, cx);
6154 assert_eq!(editor.text(cx), "12cde6");
6155 });
6156 }
6157
6158 #[gpui::test]
6159 fn test_selection_with_mouse(cx: &mut gpui::MutableAppContext) {
6160 populate_settings(cx);
6161
6162 let buffer = MultiBuffer::build_simple("aaaaaa\nbbbbbb\ncccccc\nddddddd\n", cx);
6163 let (_, editor) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
6164 editor.update(cx, |view, cx| {
6165 view.begin_selection(DisplayPoint::new(2, 2), false, 1, cx);
6166 });
6167 assert_eq!(
6168 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
6169 [DisplayPoint::new(2, 2)..DisplayPoint::new(2, 2)]
6170 );
6171
6172 editor.update(cx, |view, cx| {
6173 view.update_selection(DisplayPoint::new(3, 3), 0, Vector2F::zero(), cx);
6174 });
6175
6176 assert_eq!(
6177 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
6178 [DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3)]
6179 );
6180
6181 editor.update(cx, |view, cx| {
6182 view.update_selection(DisplayPoint::new(1, 1), 0, Vector2F::zero(), cx);
6183 });
6184
6185 assert_eq!(
6186 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
6187 [DisplayPoint::new(2, 2)..DisplayPoint::new(1, 1)]
6188 );
6189
6190 editor.update(cx, |view, cx| {
6191 view.end_selection(cx);
6192 view.update_selection(DisplayPoint::new(3, 3), 0, Vector2F::zero(), cx);
6193 });
6194
6195 assert_eq!(
6196 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
6197 [DisplayPoint::new(2, 2)..DisplayPoint::new(1, 1)]
6198 );
6199
6200 editor.update(cx, |view, cx| {
6201 view.begin_selection(DisplayPoint::new(3, 3), true, 1, cx);
6202 view.update_selection(DisplayPoint::new(0, 0), 0, Vector2F::zero(), cx);
6203 });
6204
6205 assert_eq!(
6206 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
6207 [
6208 DisplayPoint::new(2, 2)..DisplayPoint::new(1, 1),
6209 DisplayPoint::new(3, 3)..DisplayPoint::new(0, 0)
6210 ]
6211 );
6212
6213 editor.update(cx, |view, cx| {
6214 view.end_selection(cx);
6215 });
6216
6217 assert_eq!(
6218 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
6219 [DisplayPoint::new(3, 3)..DisplayPoint::new(0, 0)]
6220 );
6221 }
6222
6223 #[gpui::test]
6224 fn test_canceling_pending_selection(cx: &mut gpui::MutableAppContext) {
6225 populate_settings(cx);
6226 let buffer = MultiBuffer::build_simple("aaaaaa\nbbbbbb\ncccccc\ndddddd\n", cx);
6227 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
6228
6229 view.update(cx, |view, cx| {
6230 view.begin_selection(DisplayPoint::new(2, 2), false, 1, cx);
6231 assert_eq!(
6232 view.selected_display_ranges(cx),
6233 [DisplayPoint::new(2, 2)..DisplayPoint::new(2, 2)]
6234 );
6235 });
6236
6237 view.update(cx, |view, cx| {
6238 view.update_selection(DisplayPoint::new(3, 3), 0, Vector2F::zero(), cx);
6239 assert_eq!(
6240 view.selected_display_ranges(cx),
6241 [DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3)]
6242 );
6243 });
6244
6245 view.update(cx, |view, cx| {
6246 view.cancel(&Cancel, cx);
6247 view.update_selection(DisplayPoint::new(1, 1), 0, Vector2F::zero(), cx);
6248 assert_eq!(
6249 view.selected_display_ranges(cx),
6250 [DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3)]
6251 );
6252 });
6253 }
6254
6255 #[gpui::test]
6256 fn test_navigation_history(cx: &mut gpui::MutableAppContext) {
6257 populate_settings(cx);
6258 use workspace::Item;
6259 let nav_history = Rc::new(RefCell::new(workspace::NavHistory::default()));
6260 let buffer = MultiBuffer::build_simple(&sample_text(30, 5, 'a'), cx);
6261
6262 cx.add_window(Default::default(), |cx| {
6263 let mut editor = build_editor(buffer.clone(), cx);
6264 editor.nav_history = Some(ItemNavHistory::new(nav_history.clone(), &cx.handle()));
6265
6266 // Move the cursor a small distance.
6267 // Nothing is added to the navigation history.
6268 editor.select_display_ranges(&[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)], cx);
6269 editor.select_display_ranges(&[DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0)], cx);
6270 assert!(nav_history.borrow_mut().pop_backward().is_none());
6271
6272 // Move the cursor a large distance.
6273 // The history can jump back to the previous position.
6274 editor.select_display_ranges(&[DisplayPoint::new(13, 0)..DisplayPoint::new(13, 3)], cx);
6275 let nav_entry = nav_history.borrow_mut().pop_backward().unwrap();
6276 editor.navigate(nav_entry.data.unwrap(), cx);
6277 assert_eq!(nav_entry.item.id(), cx.view_id());
6278 assert_eq!(
6279 editor.selected_display_ranges(cx),
6280 &[DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0)]
6281 );
6282
6283 // Move the cursor a small distance via the mouse.
6284 // Nothing is added to the navigation history.
6285 editor.begin_selection(DisplayPoint::new(5, 0), false, 1, cx);
6286 editor.end_selection(cx);
6287 assert_eq!(
6288 editor.selected_display_ranges(cx),
6289 &[DisplayPoint::new(5, 0)..DisplayPoint::new(5, 0)]
6290 );
6291 assert!(nav_history.borrow_mut().pop_backward().is_none());
6292
6293 // Move the cursor a large distance via the mouse.
6294 // The history can jump back to the previous position.
6295 editor.begin_selection(DisplayPoint::new(15, 0), false, 1, cx);
6296 editor.end_selection(cx);
6297 assert_eq!(
6298 editor.selected_display_ranges(cx),
6299 &[DisplayPoint::new(15, 0)..DisplayPoint::new(15, 0)]
6300 );
6301 let nav_entry = nav_history.borrow_mut().pop_backward().unwrap();
6302 editor.navigate(nav_entry.data.unwrap(), cx);
6303 assert_eq!(nav_entry.item.id(), cx.view_id());
6304 assert_eq!(
6305 editor.selected_display_ranges(cx),
6306 &[DisplayPoint::new(5, 0)..DisplayPoint::new(5, 0)]
6307 );
6308
6309 editor
6310 });
6311 }
6312
6313 #[gpui::test]
6314 fn test_cancel(cx: &mut gpui::MutableAppContext) {
6315 populate_settings(cx);
6316 let buffer = MultiBuffer::build_simple("aaaaaa\nbbbbbb\ncccccc\ndddddd\n", cx);
6317 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
6318
6319 view.update(cx, |view, cx| {
6320 view.begin_selection(DisplayPoint::new(3, 4), false, 1, cx);
6321 view.update_selection(DisplayPoint::new(1, 1), 0, Vector2F::zero(), cx);
6322 view.end_selection(cx);
6323
6324 view.begin_selection(DisplayPoint::new(0, 1), true, 1, cx);
6325 view.update_selection(DisplayPoint::new(0, 3), 0, Vector2F::zero(), cx);
6326 view.end_selection(cx);
6327 assert_eq!(
6328 view.selected_display_ranges(cx),
6329 [
6330 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
6331 DisplayPoint::new(3, 4)..DisplayPoint::new(1, 1),
6332 ]
6333 );
6334 });
6335
6336 view.update(cx, |view, cx| {
6337 view.cancel(&Cancel, cx);
6338 assert_eq!(
6339 view.selected_display_ranges(cx),
6340 [DisplayPoint::new(3, 4)..DisplayPoint::new(1, 1)]
6341 );
6342 });
6343
6344 view.update(cx, |view, cx| {
6345 view.cancel(&Cancel, cx);
6346 assert_eq!(
6347 view.selected_display_ranges(cx),
6348 [DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1)]
6349 );
6350 });
6351 }
6352
6353 #[gpui::test]
6354 fn test_fold(cx: &mut gpui::MutableAppContext) {
6355 populate_settings(cx);
6356 let buffer = MultiBuffer::build_simple(
6357 &"
6358 impl Foo {
6359 // Hello!
6360
6361 fn a() {
6362 1
6363 }
6364
6365 fn b() {
6366 2
6367 }
6368
6369 fn c() {
6370 3
6371 }
6372 }
6373 "
6374 .unindent(),
6375 cx,
6376 );
6377 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer.clone(), cx));
6378
6379 view.update(cx, |view, cx| {
6380 view.select_display_ranges(&[DisplayPoint::new(8, 0)..DisplayPoint::new(12, 0)], cx);
6381 view.fold(&Fold, cx);
6382 assert_eq!(
6383 view.display_text(cx),
6384 "
6385 impl Foo {
6386 // Hello!
6387
6388 fn a() {
6389 1
6390 }
6391
6392 fn b() {…
6393 }
6394
6395 fn c() {…
6396 }
6397 }
6398 "
6399 .unindent(),
6400 );
6401
6402 view.fold(&Fold, cx);
6403 assert_eq!(
6404 view.display_text(cx),
6405 "
6406 impl Foo {…
6407 }
6408 "
6409 .unindent(),
6410 );
6411
6412 view.unfold(&Unfold, cx);
6413 assert_eq!(
6414 view.display_text(cx),
6415 "
6416 impl Foo {
6417 // Hello!
6418
6419 fn a() {
6420 1
6421 }
6422
6423 fn b() {…
6424 }
6425
6426 fn c() {…
6427 }
6428 }
6429 "
6430 .unindent(),
6431 );
6432
6433 view.unfold(&Unfold, cx);
6434 assert_eq!(view.display_text(cx), buffer.read(cx).read(cx).text());
6435 });
6436 }
6437
6438 #[gpui::test]
6439 fn test_move_cursor(cx: &mut gpui::MutableAppContext) {
6440 populate_settings(cx);
6441 let buffer = MultiBuffer::build_simple(&sample_text(6, 6, 'a'), cx);
6442 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer.clone(), cx));
6443
6444 buffer.update(cx, |buffer, cx| {
6445 buffer.edit(
6446 vec![
6447 Point::new(1, 0)..Point::new(1, 0),
6448 Point::new(1, 1)..Point::new(1, 1),
6449 ],
6450 "\t",
6451 cx,
6452 );
6453 });
6454
6455 view.update(cx, |view, cx| {
6456 assert_eq!(
6457 view.selected_display_ranges(cx),
6458 &[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)]
6459 );
6460
6461 view.move_down(&MoveDown, cx);
6462 assert_eq!(
6463 view.selected_display_ranges(cx),
6464 &[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)]
6465 );
6466
6467 view.move_right(&MoveRight, cx);
6468 assert_eq!(
6469 view.selected_display_ranges(cx),
6470 &[DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4)]
6471 );
6472
6473 view.move_left(&MoveLeft, cx);
6474 assert_eq!(
6475 view.selected_display_ranges(cx),
6476 &[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)]
6477 );
6478
6479 view.move_up(&MoveUp, cx);
6480 assert_eq!(
6481 view.selected_display_ranges(cx),
6482 &[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)]
6483 );
6484
6485 view.move_to_end(&MoveToEnd, cx);
6486 assert_eq!(
6487 view.selected_display_ranges(cx),
6488 &[DisplayPoint::new(5, 6)..DisplayPoint::new(5, 6)]
6489 );
6490
6491 view.move_to_beginning(&MoveToBeginning, cx);
6492 assert_eq!(
6493 view.selected_display_ranges(cx),
6494 &[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)]
6495 );
6496
6497 view.select_display_ranges(&[DisplayPoint::new(0, 1)..DisplayPoint::new(0, 2)], cx);
6498 view.select_to_beginning(&SelectToBeginning, cx);
6499 assert_eq!(
6500 view.selected_display_ranges(cx),
6501 &[DisplayPoint::new(0, 1)..DisplayPoint::new(0, 0)]
6502 );
6503
6504 view.select_to_end(&SelectToEnd, cx);
6505 assert_eq!(
6506 view.selected_display_ranges(cx),
6507 &[DisplayPoint::new(0, 1)..DisplayPoint::new(5, 6)]
6508 );
6509 });
6510 }
6511
6512 #[gpui::test]
6513 fn test_move_cursor_multibyte(cx: &mut gpui::MutableAppContext) {
6514 populate_settings(cx);
6515 let buffer = MultiBuffer::build_simple("ⓐⓑⓒⓓⓔ\nabcde\nαβγδε\n", cx);
6516 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer.clone(), cx));
6517
6518 assert_eq!('ⓐ'.len_utf8(), 3);
6519 assert_eq!('α'.len_utf8(), 2);
6520
6521 view.update(cx, |view, cx| {
6522 view.fold_ranges(
6523 vec![
6524 Point::new(0, 6)..Point::new(0, 12),
6525 Point::new(1, 2)..Point::new(1, 4),
6526 Point::new(2, 4)..Point::new(2, 8),
6527 ],
6528 cx,
6529 );
6530 assert_eq!(view.display_text(cx), "ⓐⓑ…ⓔ\nab…e\nαβ…ε\n");
6531
6532 view.move_right(&MoveRight, cx);
6533 assert_eq!(
6534 view.selected_display_ranges(cx),
6535 &[empty_range(0, "ⓐ".len())]
6536 );
6537 view.move_right(&MoveRight, cx);
6538 assert_eq!(
6539 view.selected_display_ranges(cx),
6540 &[empty_range(0, "ⓐⓑ".len())]
6541 );
6542 view.move_right(&MoveRight, cx);
6543 assert_eq!(
6544 view.selected_display_ranges(cx),
6545 &[empty_range(0, "ⓐⓑ…".len())]
6546 );
6547
6548 view.move_down(&MoveDown, cx);
6549 assert_eq!(
6550 view.selected_display_ranges(cx),
6551 &[empty_range(1, "ab…".len())]
6552 );
6553 view.move_left(&MoveLeft, cx);
6554 assert_eq!(
6555 view.selected_display_ranges(cx),
6556 &[empty_range(1, "ab".len())]
6557 );
6558 view.move_left(&MoveLeft, cx);
6559 assert_eq!(
6560 view.selected_display_ranges(cx),
6561 &[empty_range(1, "a".len())]
6562 );
6563
6564 view.move_down(&MoveDown, cx);
6565 assert_eq!(
6566 view.selected_display_ranges(cx),
6567 &[empty_range(2, "α".len())]
6568 );
6569 view.move_right(&MoveRight, cx);
6570 assert_eq!(
6571 view.selected_display_ranges(cx),
6572 &[empty_range(2, "αβ".len())]
6573 );
6574 view.move_right(&MoveRight, cx);
6575 assert_eq!(
6576 view.selected_display_ranges(cx),
6577 &[empty_range(2, "αβ…".len())]
6578 );
6579 view.move_right(&MoveRight, cx);
6580 assert_eq!(
6581 view.selected_display_ranges(cx),
6582 &[empty_range(2, "αβ…ε".len())]
6583 );
6584
6585 view.move_up(&MoveUp, cx);
6586 assert_eq!(
6587 view.selected_display_ranges(cx),
6588 &[empty_range(1, "ab…e".len())]
6589 );
6590 view.move_up(&MoveUp, cx);
6591 assert_eq!(
6592 view.selected_display_ranges(cx),
6593 &[empty_range(0, "ⓐⓑ…ⓔ".len())]
6594 );
6595 view.move_left(&MoveLeft, cx);
6596 assert_eq!(
6597 view.selected_display_ranges(cx),
6598 &[empty_range(0, "ⓐⓑ…".len())]
6599 );
6600 view.move_left(&MoveLeft, cx);
6601 assert_eq!(
6602 view.selected_display_ranges(cx),
6603 &[empty_range(0, "ⓐⓑ".len())]
6604 );
6605 view.move_left(&MoveLeft, cx);
6606 assert_eq!(
6607 view.selected_display_ranges(cx),
6608 &[empty_range(0, "ⓐ".len())]
6609 );
6610 });
6611 }
6612
6613 #[gpui::test]
6614 fn test_move_cursor_different_line_lengths(cx: &mut gpui::MutableAppContext) {
6615 populate_settings(cx);
6616 let buffer = MultiBuffer::build_simple("ⓐⓑⓒⓓⓔ\nabcd\nαβγ\nabcd\nⓐⓑⓒⓓⓔ\n", cx);
6617 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer.clone(), cx));
6618 view.update(cx, |view, cx| {
6619 view.select_display_ranges(&[empty_range(0, "ⓐⓑⓒⓓⓔ".len())], cx);
6620 view.move_down(&MoveDown, cx);
6621 assert_eq!(
6622 view.selected_display_ranges(cx),
6623 &[empty_range(1, "abcd".len())]
6624 );
6625
6626 view.move_down(&MoveDown, cx);
6627 assert_eq!(
6628 view.selected_display_ranges(cx),
6629 &[empty_range(2, "αβγ".len())]
6630 );
6631
6632 view.move_down(&MoveDown, cx);
6633 assert_eq!(
6634 view.selected_display_ranges(cx),
6635 &[empty_range(3, "abcd".len())]
6636 );
6637
6638 view.move_down(&MoveDown, cx);
6639 assert_eq!(
6640 view.selected_display_ranges(cx),
6641 &[empty_range(4, "ⓐⓑⓒⓓⓔ".len())]
6642 );
6643
6644 view.move_up(&MoveUp, cx);
6645 assert_eq!(
6646 view.selected_display_ranges(cx),
6647 &[empty_range(3, "abcd".len())]
6648 );
6649
6650 view.move_up(&MoveUp, cx);
6651 assert_eq!(
6652 view.selected_display_ranges(cx),
6653 &[empty_range(2, "αβγ".len())]
6654 );
6655 });
6656 }
6657
6658 #[gpui::test]
6659 fn test_beginning_end_of_line(cx: &mut gpui::MutableAppContext) {
6660 populate_settings(cx);
6661 let buffer = MultiBuffer::build_simple("abc\n def", cx);
6662 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
6663 view.update(cx, |view, cx| {
6664 view.select_display_ranges(
6665 &[
6666 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
6667 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4),
6668 ],
6669 cx,
6670 );
6671 });
6672
6673 view.update(cx, |view, cx| {
6674 view.move_to_beginning_of_line(&MoveToBeginningOfLine, cx);
6675 assert_eq!(
6676 view.selected_display_ranges(cx),
6677 &[
6678 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
6679 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
6680 ]
6681 );
6682 });
6683
6684 view.update(cx, |view, cx| {
6685 view.move_to_beginning_of_line(&MoveToBeginningOfLine, cx);
6686 assert_eq!(
6687 view.selected_display_ranges(cx),
6688 &[
6689 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
6690 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
6691 ]
6692 );
6693 });
6694
6695 view.update(cx, |view, cx| {
6696 view.move_to_beginning_of_line(&MoveToBeginningOfLine, cx);
6697 assert_eq!(
6698 view.selected_display_ranges(cx),
6699 &[
6700 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
6701 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
6702 ]
6703 );
6704 });
6705
6706 view.update(cx, |view, cx| {
6707 view.move_to_end_of_line(&MoveToEndOfLine, cx);
6708 assert_eq!(
6709 view.selected_display_ranges(cx),
6710 &[
6711 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
6712 DisplayPoint::new(1, 5)..DisplayPoint::new(1, 5),
6713 ]
6714 );
6715 });
6716
6717 // Moving to the end of line again is a no-op.
6718 view.update(cx, |view, cx| {
6719 view.move_to_end_of_line(&MoveToEndOfLine, cx);
6720 assert_eq!(
6721 view.selected_display_ranges(cx),
6722 &[
6723 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
6724 DisplayPoint::new(1, 5)..DisplayPoint::new(1, 5),
6725 ]
6726 );
6727 });
6728
6729 view.update(cx, |view, cx| {
6730 view.move_left(&MoveLeft, cx);
6731 view.select_to_beginning_of_line(&SelectToBeginningOfLine(true), cx);
6732 assert_eq!(
6733 view.selected_display_ranges(cx),
6734 &[
6735 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 0),
6736 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 2),
6737 ]
6738 );
6739 });
6740
6741 view.update(cx, |view, cx| {
6742 view.select_to_beginning_of_line(&SelectToBeginningOfLine(true), cx);
6743 assert_eq!(
6744 view.selected_display_ranges(cx),
6745 &[
6746 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 0),
6747 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 0),
6748 ]
6749 );
6750 });
6751
6752 view.update(cx, |view, cx| {
6753 view.select_to_beginning_of_line(&SelectToBeginningOfLine(true), cx);
6754 assert_eq!(
6755 view.selected_display_ranges(cx),
6756 &[
6757 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 0),
6758 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 2),
6759 ]
6760 );
6761 });
6762
6763 view.update(cx, |view, cx| {
6764 view.select_to_end_of_line(&SelectToEndOfLine(true), cx);
6765 assert_eq!(
6766 view.selected_display_ranges(cx),
6767 &[
6768 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 3),
6769 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 5),
6770 ]
6771 );
6772 });
6773
6774 view.update(cx, |view, cx| {
6775 view.delete_to_end_of_line(&DeleteToEndOfLine, cx);
6776 assert_eq!(view.display_text(cx), "ab\n de");
6777 assert_eq!(
6778 view.selected_display_ranges(cx),
6779 &[
6780 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
6781 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4),
6782 ]
6783 );
6784 });
6785
6786 view.update(cx, |view, cx| {
6787 view.delete_to_beginning_of_line(&DeleteToBeginningOfLine, cx);
6788 assert_eq!(view.display_text(cx), "\n");
6789 assert_eq!(
6790 view.selected_display_ranges(cx),
6791 &[
6792 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
6793 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
6794 ]
6795 );
6796 });
6797 }
6798
6799 #[gpui::test]
6800 fn test_prev_next_word_boundary(cx: &mut gpui::MutableAppContext) {
6801 populate_settings(cx);
6802 let buffer = MultiBuffer::build_simple("use std::str::{foo, bar}\n\n {baz.qux()}", cx);
6803 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
6804 view.update(cx, |view, cx| {
6805 view.select_display_ranges(
6806 &[
6807 DisplayPoint::new(0, 11)..DisplayPoint::new(0, 11),
6808 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 4),
6809 ],
6810 cx,
6811 );
6812
6813 view.move_to_previous_word_start(&MoveToPreviousWordStart, cx);
6814 assert_selection_ranges(
6815 "use std::<>str::{foo, bar}\n\n {[]baz.qux()}",
6816 vec![('<', '>'), ('[', ']')],
6817 view,
6818 cx,
6819 );
6820
6821 view.move_to_previous_word_start(&MoveToPreviousWordStart, cx);
6822 assert_selection_ranges(
6823 "use std<>::str::{foo, bar}\n\n []{baz.qux()}",
6824 vec![('<', '>'), ('[', ']')],
6825 view,
6826 cx,
6827 );
6828
6829 view.move_to_previous_word_start(&MoveToPreviousWordStart, cx);
6830 assert_selection_ranges(
6831 "use <>std::str::{foo, bar}\n\n[] {baz.qux()}",
6832 vec![('<', '>'), ('[', ']')],
6833 view,
6834 cx,
6835 );
6836
6837 view.move_to_previous_word_start(&MoveToPreviousWordStart, cx);
6838 assert_selection_ranges(
6839 "<>use std::str::{foo, bar}\n[]\n {baz.qux()}",
6840 vec![('<', '>'), ('[', ']')],
6841 view,
6842 cx,
6843 );
6844
6845 view.move_to_previous_word_start(&MoveToPreviousWordStart, cx);
6846 assert_selection_ranges(
6847 "<>use std::str::{foo, bar[]}\n\n {baz.qux()}",
6848 vec![('<', '>'), ('[', ']')],
6849 view,
6850 cx,
6851 );
6852
6853 view.move_to_next_word_end(&MoveToNextWordEnd, cx);
6854 assert_selection_ranges(
6855 "use<> std::str::{foo, bar}[]\n\n {baz.qux()}",
6856 vec![('<', '>'), ('[', ']')],
6857 view,
6858 cx,
6859 );
6860
6861 view.move_to_next_word_end(&MoveToNextWordEnd, cx);
6862 assert_selection_ranges(
6863 "use std<>::str::{foo, bar}\n[]\n {baz.qux()}",
6864 vec![('<', '>'), ('[', ']')],
6865 view,
6866 cx,
6867 );
6868
6869 view.move_to_next_word_end(&MoveToNextWordEnd, cx);
6870 assert_selection_ranges(
6871 "use std::<>str::{foo, bar}\n\n {[]baz.qux()}",
6872 vec![('<', '>'), ('[', ']')],
6873 view,
6874 cx,
6875 );
6876
6877 view.move_right(&MoveRight, cx);
6878 view.select_to_previous_word_start(&SelectToPreviousWordBoundary, cx);
6879 assert_selection_ranges(
6880 "use std::>s<tr::{foo, bar}\n\n {]b[az.qux()}",
6881 vec![('<', '>'), ('[', ']')],
6882 view,
6883 cx,
6884 );
6885
6886 view.select_to_previous_word_start(&SelectToPreviousWordBoundary, cx);
6887 assert_selection_ranges(
6888 "use std>::s<tr::{foo, bar}\n\n ]{b[az.qux()}",
6889 vec![('<', '>'), ('[', ']')],
6890 view,
6891 cx,
6892 );
6893
6894 view.select_to_next_word_end(&SelectToNextWordBoundary, cx);
6895 assert_selection_ranges(
6896 "use std::>s<tr::{foo, bar}\n\n {]b[az.qux()}",
6897 vec![('<', '>'), ('[', ']')],
6898 view,
6899 cx,
6900 );
6901 });
6902 }
6903
6904 #[gpui::test]
6905 fn test_prev_next_word_bounds_with_soft_wrap(cx: &mut gpui::MutableAppContext) {
6906 populate_settings(cx);
6907 let buffer = MultiBuffer::build_simple("use one::{\n two::three::four::five\n};", cx);
6908 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
6909
6910 view.update(cx, |view, cx| {
6911 view.set_wrap_width(Some(140.), cx);
6912 assert_eq!(
6913 view.display_text(cx),
6914 "use one::{\n two::three::\n four::five\n};"
6915 );
6916
6917 view.select_display_ranges(&[DisplayPoint::new(1, 7)..DisplayPoint::new(1, 7)], cx);
6918
6919 view.move_to_next_word_end(&MoveToNextWordEnd, cx);
6920 assert_eq!(
6921 view.selected_display_ranges(cx),
6922 &[DisplayPoint::new(1, 9)..DisplayPoint::new(1, 9)]
6923 );
6924
6925 view.move_to_next_word_end(&MoveToNextWordEnd, cx);
6926 assert_eq!(
6927 view.selected_display_ranges(cx),
6928 &[DisplayPoint::new(1, 14)..DisplayPoint::new(1, 14)]
6929 );
6930
6931 view.move_to_next_word_end(&MoveToNextWordEnd, cx);
6932 assert_eq!(
6933 view.selected_display_ranges(cx),
6934 &[DisplayPoint::new(2, 4)..DisplayPoint::new(2, 4)]
6935 );
6936
6937 view.move_to_next_word_end(&MoveToNextWordEnd, cx);
6938 assert_eq!(
6939 view.selected_display_ranges(cx),
6940 &[DisplayPoint::new(2, 8)..DisplayPoint::new(2, 8)]
6941 );
6942
6943 view.move_to_previous_word_start(&MoveToPreviousWordStart, cx);
6944 assert_eq!(
6945 view.selected_display_ranges(cx),
6946 &[DisplayPoint::new(2, 4)..DisplayPoint::new(2, 4)]
6947 );
6948
6949 view.move_to_previous_word_start(&MoveToPreviousWordStart, cx);
6950 assert_eq!(
6951 view.selected_display_ranges(cx),
6952 &[DisplayPoint::new(1, 14)..DisplayPoint::new(1, 14)]
6953 );
6954 });
6955 }
6956
6957 #[gpui::test]
6958 fn test_delete_to_word_boundary(cx: &mut gpui::MutableAppContext) {
6959 populate_settings(cx);
6960 let buffer = MultiBuffer::build_simple("one two three four", cx);
6961 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer.clone(), cx));
6962
6963 view.update(cx, |view, cx| {
6964 view.select_display_ranges(
6965 &[
6966 // an empty selection - the preceding word fragment is deleted
6967 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
6968 // characters selected - they are deleted
6969 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 12),
6970 ],
6971 cx,
6972 );
6973 view.delete_to_previous_word_start(&DeleteToPreviousWordBoundary, cx);
6974 });
6975
6976 assert_eq!(buffer.read(cx).read(cx).text(), "e two te four");
6977
6978 view.update(cx, |view, cx| {
6979 view.select_display_ranges(
6980 &[
6981 // an empty selection - the following word fragment is deleted
6982 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
6983 // characters selected - they are deleted
6984 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 10),
6985 ],
6986 cx,
6987 );
6988 view.delete_to_next_word_end(&DeleteToNextWordBoundary, cx);
6989 });
6990
6991 assert_eq!(buffer.read(cx).read(cx).text(), "e t te our");
6992 }
6993
6994 #[gpui::test]
6995 fn test_newline(cx: &mut gpui::MutableAppContext) {
6996 populate_settings(cx);
6997 let buffer = MultiBuffer::build_simple("aaaa\n bbbb\n", cx);
6998 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer.clone(), cx));
6999
7000 view.update(cx, |view, cx| {
7001 view.select_display_ranges(
7002 &[
7003 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
7004 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
7005 DisplayPoint::new(1, 6)..DisplayPoint::new(1, 6),
7006 ],
7007 cx,
7008 );
7009
7010 view.newline(&Newline, cx);
7011 assert_eq!(view.text(cx), "aa\naa\n \n bb\n bb\n");
7012 });
7013 }
7014
7015 #[gpui::test]
7016 fn test_newline_with_old_selections(cx: &mut gpui::MutableAppContext) {
7017 populate_settings(cx);
7018 let buffer = MultiBuffer::build_simple(
7019 "
7020 a
7021 b(
7022 X
7023 )
7024 c(
7025 X
7026 )
7027 "
7028 .unindent()
7029 .as_str(),
7030 cx,
7031 );
7032
7033 let (_, editor) = cx.add_window(Default::default(), |cx| {
7034 let mut editor = build_editor(buffer.clone(), cx);
7035 editor.select_ranges(
7036 [
7037 Point::new(2, 4)..Point::new(2, 5),
7038 Point::new(5, 4)..Point::new(5, 5),
7039 ],
7040 None,
7041 cx,
7042 );
7043 editor
7044 });
7045
7046 // Edit the buffer directly, deleting ranges surrounding the editor's selections
7047 buffer.update(cx, |buffer, cx| {
7048 buffer.edit(
7049 [
7050 Point::new(1, 2)..Point::new(3, 0),
7051 Point::new(4, 2)..Point::new(6, 0),
7052 ],
7053 "",
7054 cx,
7055 );
7056 assert_eq!(
7057 buffer.read(cx).text(),
7058 "
7059 a
7060 b()
7061 c()
7062 "
7063 .unindent()
7064 );
7065 });
7066
7067 editor.update(cx, |editor, cx| {
7068 assert_eq!(
7069 editor.selected_ranges(cx),
7070 &[
7071 Point::new(1, 2)..Point::new(1, 2),
7072 Point::new(2, 2)..Point::new(2, 2),
7073 ],
7074 );
7075
7076 editor.newline(&Newline, cx);
7077 assert_eq!(
7078 editor.text(cx),
7079 "
7080 a
7081 b(
7082 )
7083 c(
7084 )
7085 "
7086 .unindent()
7087 );
7088
7089 // The selections are moved after the inserted newlines
7090 assert_eq!(
7091 editor.selected_ranges(cx),
7092 &[
7093 Point::new(2, 0)..Point::new(2, 0),
7094 Point::new(4, 0)..Point::new(4, 0),
7095 ],
7096 );
7097 });
7098 }
7099
7100 #[gpui::test]
7101 fn test_insert_with_old_selections(cx: &mut gpui::MutableAppContext) {
7102 populate_settings(cx);
7103 let buffer = MultiBuffer::build_simple("a( X ), b( Y ), c( Z )", cx);
7104 let (_, editor) = cx.add_window(Default::default(), |cx| {
7105 let mut editor = build_editor(buffer.clone(), cx);
7106 editor.select_ranges([3..4, 11..12, 19..20], None, cx);
7107 editor
7108 });
7109
7110 // Edit the buffer directly, deleting ranges surrounding the editor's selections
7111 buffer.update(cx, |buffer, cx| {
7112 buffer.edit([2..5, 10..13, 18..21], "", cx);
7113 assert_eq!(buffer.read(cx).text(), "a(), b(), c()".unindent());
7114 });
7115
7116 editor.update(cx, |editor, cx| {
7117 assert_eq!(editor.selected_ranges(cx), &[2..2, 7..7, 12..12],);
7118
7119 editor.insert("Z", cx);
7120 assert_eq!(editor.text(cx), "a(Z), b(Z), c(Z)");
7121
7122 // The selections are moved after the inserted characters
7123 assert_eq!(editor.selected_ranges(cx), &[3..3, 9..9, 15..15],);
7124 });
7125 }
7126
7127 #[gpui::test]
7128 fn test_indent_outdent(cx: &mut gpui::MutableAppContext) {
7129 populate_settings(cx);
7130 let buffer = MultiBuffer::build_simple(" one two\nthree\n four", cx);
7131 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer.clone(), cx));
7132
7133 view.update(cx, |view, cx| {
7134 // two selections on the same line
7135 view.select_display_ranges(
7136 &[
7137 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 5),
7138 DisplayPoint::new(0, 6)..DisplayPoint::new(0, 9),
7139 ],
7140 cx,
7141 );
7142
7143 // indent from mid-tabstop to full tabstop
7144 view.tab(&Tab, cx);
7145 assert_eq!(view.text(cx), " one two\nthree\n four");
7146 assert_eq!(
7147 view.selected_display_ranges(cx),
7148 &[
7149 DisplayPoint::new(0, 4)..DisplayPoint::new(0, 7),
7150 DisplayPoint::new(0, 8)..DisplayPoint::new(0, 11),
7151 ]
7152 );
7153
7154 // outdent from 1 tabstop to 0 tabstops
7155 view.outdent(&Outdent, cx);
7156 assert_eq!(view.text(cx), "one two\nthree\n four");
7157 assert_eq!(
7158 view.selected_display_ranges(cx),
7159 &[
7160 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 3),
7161 DisplayPoint::new(0, 4)..DisplayPoint::new(0, 7),
7162 ]
7163 );
7164
7165 // select across line ending
7166 view.select_display_ranges(&[DisplayPoint::new(1, 1)..DisplayPoint::new(2, 0)], cx);
7167
7168 // indent and outdent affect only the preceding line
7169 view.tab(&Tab, cx);
7170 assert_eq!(view.text(cx), "one two\n three\n four");
7171 assert_eq!(
7172 view.selected_display_ranges(cx),
7173 &[DisplayPoint::new(1, 5)..DisplayPoint::new(2, 0)]
7174 );
7175 view.outdent(&Outdent, cx);
7176 assert_eq!(view.text(cx), "one two\nthree\n four");
7177 assert_eq!(
7178 view.selected_display_ranges(cx),
7179 &[DisplayPoint::new(1, 1)..DisplayPoint::new(2, 0)]
7180 );
7181
7182 // Ensure that indenting/outdenting works when the cursor is at column 0.
7183 view.select_display_ranges(&[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)], cx);
7184 view.tab(&Tab, cx);
7185 assert_eq!(view.text(cx), "one two\n three\n four");
7186 assert_eq!(
7187 view.selected_display_ranges(cx),
7188 &[DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4)]
7189 );
7190
7191 view.select_display_ranges(&[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)], cx);
7192 view.outdent(&Outdent, cx);
7193 assert_eq!(view.text(cx), "one two\nthree\n four");
7194 assert_eq!(
7195 view.selected_display_ranges(cx),
7196 &[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)]
7197 );
7198 });
7199 }
7200
7201 #[gpui::test]
7202 fn test_backspace(cx: &mut gpui::MutableAppContext) {
7203 populate_settings(cx);
7204 let (_, view) = cx.add_window(Default::default(), |cx| {
7205 build_editor(MultiBuffer::build_simple("", cx), cx)
7206 });
7207
7208 view.update(cx, |view, cx| {
7209 view.set_text("one two three\nfour five six\nseven eight nine\nten\n", cx);
7210 view.select_display_ranges(
7211 &[
7212 // an empty selection - the preceding character is deleted
7213 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
7214 // one character selected - it is deleted
7215 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
7216 // a line suffix selected - it is deleted
7217 DisplayPoint::new(2, 6)..DisplayPoint::new(3, 0),
7218 ],
7219 cx,
7220 );
7221 view.backspace(&Backspace, cx);
7222 assert_eq!(view.text(cx), "oe two three\nfou five six\nseven ten\n");
7223
7224 view.set_text(" one\n two\n three\n four", cx);
7225 view.select_display_ranges(
7226 &[
7227 // cursors at the the end of leading indent - last indent is deleted
7228 DisplayPoint::new(0, 4)..DisplayPoint::new(0, 4),
7229 DisplayPoint::new(1, 8)..DisplayPoint::new(1, 8),
7230 // cursors inside leading indent - overlapping indent deletions are coalesced
7231 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 4),
7232 DisplayPoint::new(2, 5)..DisplayPoint::new(2, 5),
7233 DisplayPoint::new(2, 6)..DisplayPoint::new(2, 6),
7234 // cursor at the beginning of a line - preceding newline is deleted
7235 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
7236 // selection inside leading indent - only the selected character is deleted
7237 DisplayPoint::new(3, 2)..DisplayPoint::new(3, 3),
7238 ],
7239 cx,
7240 );
7241 view.backspace(&Backspace, cx);
7242 assert_eq!(view.text(cx), "one\n two\n three four");
7243 });
7244 }
7245
7246 #[gpui::test]
7247 fn test_delete(cx: &mut gpui::MutableAppContext) {
7248 populate_settings(cx);
7249 let buffer =
7250 MultiBuffer::build_simple("one two three\nfour five six\nseven eight nine\nten\n", cx);
7251 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer.clone(), cx));
7252
7253 view.update(cx, |view, cx| {
7254 view.select_display_ranges(
7255 &[
7256 // an empty selection - the following character is deleted
7257 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
7258 // one character selected - it is deleted
7259 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
7260 // a line suffix selected - it is deleted
7261 DisplayPoint::new(2, 6)..DisplayPoint::new(3, 0),
7262 ],
7263 cx,
7264 );
7265 view.delete(&Delete, cx);
7266 });
7267
7268 assert_eq!(
7269 buffer.read(cx).read(cx).text(),
7270 "on two three\nfou five six\nseven ten\n"
7271 );
7272 }
7273
7274 #[gpui::test]
7275 fn test_delete_line(cx: &mut gpui::MutableAppContext) {
7276 populate_settings(cx);
7277 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
7278 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
7279 view.update(cx, |view, cx| {
7280 view.select_display_ranges(
7281 &[
7282 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
7283 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 1),
7284 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
7285 ],
7286 cx,
7287 );
7288 view.delete_line(&DeleteLine, cx);
7289 assert_eq!(view.display_text(cx), "ghi");
7290 assert_eq!(
7291 view.selected_display_ranges(cx),
7292 vec![
7293 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
7294 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1)
7295 ]
7296 );
7297 });
7298
7299 populate_settings(cx);
7300 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
7301 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
7302 view.update(cx, |view, cx| {
7303 view.select_display_ranges(&[DisplayPoint::new(2, 0)..DisplayPoint::new(0, 1)], cx);
7304 view.delete_line(&DeleteLine, cx);
7305 assert_eq!(view.display_text(cx), "ghi\n");
7306 assert_eq!(
7307 view.selected_display_ranges(cx),
7308 vec![DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1)]
7309 );
7310 });
7311 }
7312
7313 #[gpui::test]
7314 fn test_duplicate_line(cx: &mut gpui::MutableAppContext) {
7315 populate_settings(cx);
7316 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
7317 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
7318 view.update(cx, |view, cx| {
7319 view.select_display_ranges(
7320 &[
7321 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
7322 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
7323 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
7324 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
7325 ],
7326 cx,
7327 );
7328 view.duplicate_line(&DuplicateLine, cx);
7329 assert_eq!(view.display_text(cx), "abc\nabc\ndef\ndef\nghi\n\n");
7330 assert_eq!(
7331 view.selected_display_ranges(cx),
7332 vec![
7333 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 1),
7334 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
7335 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
7336 DisplayPoint::new(6, 0)..DisplayPoint::new(6, 0),
7337 ]
7338 );
7339 });
7340
7341 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
7342 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
7343 view.update(cx, |view, cx| {
7344 view.select_display_ranges(
7345 &[
7346 DisplayPoint::new(0, 1)..DisplayPoint::new(1, 1),
7347 DisplayPoint::new(1, 2)..DisplayPoint::new(2, 1),
7348 ],
7349 cx,
7350 );
7351 view.duplicate_line(&DuplicateLine, cx);
7352 assert_eq!(view.display_text(cx), "abc\ndef\nghi\nabc\ndef\nghi\n");
7353 assert_eq!(
7354 view.selected_display_ranges(cx),
7355 vec![
7356 DisplayPoint::new(3, 1)..DisplayPoint::new(4, 1),
7357 DisplayPoint::new(4, 2)..DisplayPoint::new(5, 1),
7358 ]
7359 );
7360 });
7361 }
7362
7363 #[gpui::test]
7364 fn test_move_line_up_down(cx: &mut gpui::MutableAppContext) {
7365 populate_settings(cx);
7366 let buffer = MultiBuffer::build_simple(&sample_text(10, 5, 'a'), cx);
7367 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
7368 view.update(cx, |view, cx| {
7369 view.fold_ranges(
7370 vec![
7371 Point::new(0, 2)..Point::new(1, 2),
7372 Point::new(2, 3)..Point::new(4, 1),
7373 Point::new(7, 0)..Point::new(8, 4),
7374 ],
7375 cx,
7376 );
7377 view.select_display_ranges(
7378 &[
7379 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
7380 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 1),
7381 DisplayPoint::new(3, 2)..DisplayPoint::new(4, 3),
7382 DisplayPoint::new(5, 0)..DisplayPoint::new(5, 2),
7383 ],
7384 cx,
7385 );
7386 assert_eq!(
7387 view.display_text(cx),
7388 "aa…bbb\nccc…eeee\nfffff\nggggg\n…i\njjjjj"
7389 );
7390
7391 view.move_line_up(&MoveLineUp, cx);
7392 assert_eq!(
7393 view.display_text(cx),
7394 "aa…bbb\nccc…eeee\nggggg\n…i\njjjjj\nfffff"
7395 );
7396 assert_eq!(
7397 view.selected_display_ranges(cx),
7398 vec![
7399 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
7400 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
7401 DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3),
7402 DisplayPoint::new(4, 0)..DisplayPoint::new(4, 2)
7403 ]
7404 );
7405 });
7406
7407 view.update(cx, |view, cx| {
7408 view.move_line_down(&MoveLineDown, cx);
7409 assert_eq!(
7410 view.display_text(cx),
7411 "ccc…eeee\naa…bbb\nfffff\nggggg\n…i\njjjjj"
7412 );
7413 assert_eq!(
7414 view.selected_display_ranges(cx),
7415 vec![
7416 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
7417 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 1),
7418 DisplayPoint::new(3, 2)..DisplayPoint::new(4, 3),
7419 DisplayPoint::new(5, 0)..DisplayPoint::new(5, 2)
7420 ]
7421 );
7422 });
7423
7424 view.update(cx, |view, cx| {
7425 view.move_line_down(&MoveLineDown, cx);
7426 assert_eq!(
7427 view.display_text(cx),
7428 "ccc…eeee\nfffff\naa…bbb\nggggg\n…i\njjjjj"
7429 );
7430 assert_eq!(
7431 view.selected_display_ranges(cx),
7432 vec![
7433 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
7434 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 1),
7435 DisplayPoint::new(3, 2)..DisplayPoint::new(4, 3),
7436 DisplayPoint::new(5, 0)..DisplayPoint::new(5, 2)
7437 ]
7438 );
7439 });
7440
7441 view.update(cx, |view, cx| {
7442 view.move_line_up(&MoveLineUp, cx);
7443 assert_eq!(
7444 view.display_text(cx),
7445 "ccc…eeee\naa…bbb\nggggg\n…i\njjjjj\nfffff"
7446 );
7447 assert_eq!(
7448 view.selected_display_ranges(cx),
7449 vec![
7450 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
7451 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
7452 DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3),
7453 DisplayPoint::new(4, 0)..DisplayPoint::new(4, 2)
7454 ]
7455 );
7456 });
7457 }
7458
7459 #[gpui::test]
7460 fn test_move_line_up_down_with_blocks(cx: &mut gpui::MutableAppContext) {
7461 populate_settings(cx);
7462 let buffer = MultiBuffer::build_simple(&sample_text(10, 5, 'a'), cx);
7463 let snapshot = buffer.read(cx).snapshot(cx);
7464 let (_, editor) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
7465 editor.update(cx, |editor, cx| {
7466 editor.insert_blocks(
7467 [BlockProperties {
7468 position: snapshot.anchor_after(Point::new(2, 0)),
7469 disposition: BlockDisposition::Below,
7470 height: 1,
7471 render: Arc::new(|_| Empty::new().boxed()),
7472 }],
7473 cx,
7474 );
7475 editor.select_ranges([Point::new(2, 0)..Point::new(2, 0)], None, cx);
7476 editor.move_line_down(&MoveLineDown, cx);
7477 });
7478 }
7479
7480 #[gpui::test]
7481 fn test_clipboard(cx: &mut gpui::MutableAppContext) {
7482 populate_settings(cx);
7483 let buffer = MultiBuffer::build_simple("one✅ two three four five six ", cx);
7484 let view = cx
7485 .add_window(Default::default(), |cx| build_editor(buffer.clone(), cx))
7486 .1;
7487
7488 // Cut with three selections. Clipboard text is divided into three slices.
7489 view.update(cx, |view, cx| {
7490 view.select_ranges(vec![0..7, 11..17, 22..27], None, cx);
7491 view.cut(&Cut, cx);
7492 assert_eq!(view.display_text(cx), "two four six ");
7493 });
7494
7495 // Paste with three cursors. Each cursor pastes one slice of the clipboard text.
7496 view.update(cx, |view, cx| {
7497 view.select_ranges(vec![4..4, 9..9, 13..13], None, cx);
7498 view.paste(&Paste, cx);
7499 assert_eq!(view.display_text(cx), "two one✅ four three six five ");
7500 assert_eq!(
7501 view.selected_display_ranges(cx),
7502 &[
7503 DisplayPoint::new(0, 11)..DisplayPoint::new(0, 11),
7504 DisplayPoint::new(0, 22)..DisplayPoint::new(0, 22),
7505 DisplayPoint::new(0, 31)..DisplayPoint::new(0, 31)
7506 ]
7507 );
7508 });
7509
7510 // Paste again but with only two cursors. Since the number of cursors doesn't
7511 // match the number of slices in the clipboard, the entire clipboard text
7512 // is pasted at each cursor.
7513 view.update(cx, |view, cx| {
7514 view.select_ranges(vec![0..0, 31..31], None, cx);
7515 view.handle_input(&Input("( ".into()), cx);
7516 view.paste(&Paste, cx);
7517 view.handle_input(&Input(") ".into()), cx);
7518 assert_eq!(
7519 view.display_text(cx),
7520 "( one✅ three five ) two one✅ four three six five ( one✅ three five ) "
7521 );
7522 });
7523
7524 view.update(cx, |view, cx| {
7525 view.select_ranges(vec![0..0], None, cx);
7526 view.handle_input(&Input("123\n4567\n89\n".into()), cx);
7527 assert_eq!(
7528 view.display_text(cx),
7529 "123\n4567\n89\n( one✅ three five ) two one✅ four three six five ( one✅ three five ) "
7530 );
7531 });
7532
7533 // Cut with three selections, one of which is full-line.
7534 view.update(cx, |view, cx| {
7535 view.select_display_ranges(
7536 &[
7537 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 2),
7538 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
7539 DisplayPoint::new(2, 0)..DisplayPoint::new(2, 1),
7540 ],
7541 cx,
7542 );
7543 view.cut(&Cut, cx);
7544 assert_eq!(
7545 view.display_text(cx),
7546 "13\n9\n( one✅ three five ) two one✅ four three six five ( one✅ three five ) "
7547 );
7548 });
7549
7550 // Paste with three selections, noticing how the copied selection that was full-line
7551 // gets inserted before the second cursor.
7552 view.update(cx, |view, cx| {
7553 view.select_display_ranges(
7554 &[
7555 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
7556 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
7557 DisplayPoint::new(2, 2)..DisplayPoint::new(2, 3),
7558 ],
7559 cx,
7560 );
7561 view.paste(&Paste, cx);
7562 assert_eq!(
7563 view.display_text(cx),
7564 "123\n4567\n9\n( 8ne✅ three five ) two one✅ four three six five ( one✅ three five ) "
7565 );
7566 assert_eq!(
7567 view.selected_display_ranges(cx),
7568 &[
7569 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
7570 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
7571 DisplayPoint::new(3, 3)..DisplayPoint::new(3, 3),
7572 ]
7573 );
7574 });
7575
7576 // Copy with a single cursor only, which writes the whole line into the clipboard.
7577 view.update(cx, |view, cx| {
7578 view.select_display_ranges(&[DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1)], cx);
7579 view.copy(&Copy, cx);
7580 });
7581
7582 // Paste with three selections, noticing how the copied full-line selection is inserted
7583 // before the empty selections but replaces the selection that is non-empty.
7584 view.update(cx, |view, cx| {
7585 view.select_display_ranges(
7586 &[
7587 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
7588 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 2),
7589 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
7590 ],
7591 cx,
7592 );
7593 view.paste(&Paste, cx);
7594 assert_eq!(
7595 view.display_text(cx),
7596 "123\n123\n123\n67\n123\n9\n( 8ne✅ three five ) two one✅ four three six five ( one✅ three five ) "
7597 );
7598 assert_eq!(
7599 view.selected_display_ranges(cx),
7600 &[
7601 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
7602 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
7603 DisplayPoint::new(5, 1)..DisplayPoint::new(5, 1),
7604 ]
7605 );
7606 });
7607 }
7608
7609 #[gpui::test]
7610 fn test_select_all(cx: &mut gpui::MutableAppContext) {
7611 populate_settings(cx);
7612 let buffer = MultiBuffer::build_simple("abc\nde\nfgh", cx);
7613 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
7614 view.update(cx, |view, cx| {
7615 view.select_all(&SelectAll, cx);
7616 assert_eq!(
7617 view.selected_display_ranges(cx),
7618 &[DisplayPoint::new(0, 0)..DisplayPoint::new(2, 3)]
7619 );
7620 });
7621 }
7622
7623 #[gpui::test]
7624 fn test_select_line(cx: &mut gpui::MutableAppContext) {
7625 populate_settings(cx);
7626 let buffer = MultiBuffer::build_simple(&sample_text(6, 5, 'a'), cx);
7627 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
7628 view.update(cx, |view, cx| {
7629 view.select_display_ranges(
7630 &[
7631 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
7632 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
7633 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
7634 DisplayPoint::new(4, 2)..DisplayPoint::new(4, 2),
7635 ],
7636 cx,
7637 );
7638 view.select_line(&SelectLine, cx);
7639 assert_eq!(
7640 view.selected_display_ranges(cx),
7641 vec![
7642 DisplayPoint::new(0, 0)..DisplayPoint::new(2, 0),
7643 DisplayPoint::new(4, 0)..DisplayPoint::new(5, 0),
7644 ]
7645 );
7646 });
7647
7648 view.update(cx, |view, cx| {
7649 view.select_line(&SelectLine, cx);
7650 assert_eq!(
7651 view.selected_display_ranges(cx),
7652 vec![
7653 DisplayPoint::new(0, 0)..DisplayPoint::new(3, 0),
7654 DisplayPoint::new(4, 0)..DisplayPoint::new(5, 5),
7655 ]
7656 );
7657 });
7658
7659 view.update(cx, |view, cx| {
7660 view.select_line(&SelectLine, cx);
7661 assert_eq!(
7662 view.selected_display_ranges(cx),
7663 vec![DisplayPoint::new(0, 0)..DisplayPoint::new(5, 5)]
7664 );
7665 });
7666 }
7667
7668 #[gpui::test]
7669 fn test_split_selection_into_lines(cx: &mut gpui::MutableAppContext) {
7670 populate_settings(cx);
7671 let buffer = MultiBuffer::build_simple(&sample_text(9, 5, 'a'), cx);
7672 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
7673 view.update(cx, |view, cx| {
7674 view.fold_ranges(
7675 vec![
7676 Point::new(0, 2)..Point::new(1, 2),
7677 Point::new(2, 3)..Point::new(4, 1),
7678 Point::new(7, 0)..Point::new(8, 4),
7679 ],
7680 cx,
7681 );
7682 view.select_display_ranges(
7683 &[
7684 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
7685 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
7686 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
7687 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 4),
7688 ],
7689 cx,
7690 );
7691 assert_eq!(view.display_text(cx), "aa…bbb\nccc…eeee\nfffff\nggggg\n…i");
7692 });
7693
7694 view.update(cx, |view, cx| {
7695 view.split_selection_into_lines(&SplitSelectionIntoLines, cx);
7696 assert_eq!(
7697 view.display_text(cx),
7698 "aaaaa\nbbbbb\nccc…eeee\nfffff\nggggg\n…i"
7699 );
7700 assert_eq!(
7701 view.selected_display_ranges(cx),
7702 [
7703 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
7704 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
7705 DisplayPoint::new(2, 0)..DisplayPoint::new(2, 0),
7706 DisplayPoint::new(5, 4)..DisplayPoint::new(5, 4)
7707 ]
7708 );
7709 });
7710
7711 view.update(cx, |view, cx| {
7712 view.select_display_ranges(&[DisplayPoint::new(5, 0)..DisplayPoint::new(0, 1)], cx);
7713 view.split_selection_into_lines(&SplitSelectionIntoLines, cx);
7714 assert_eq!(
7715 view.display_text(cx),
7716 "aaaaa\nbbbbb\nccccc\nddddd\neeeee\nfffff\nggggg\nhhhhh\niiiii"
7717 );
7718 assert_eq!(
7719 view.selected_display_ranges(cx),
7720 [
7721 DisplayPoint::new(0, 5)..DisplayPoint::new(0, 5),
7722 DisplayPoint::new(1, 5)..DisplayPoint::new(1, 5),
7723 DisplayPoint::new(2, 5)..DisplayPoint::new(2, 5),
7724 DisplayPoint::new(3, 5)..DisplayPoint::new(3, 5),
7725 DisplayPoint::new(4, 5)..DisplayPoint::new(4, 5),
7726 DisplayPoint::new(5, 5)..DisplayPoint::new(5, 5),
7727 DisplayPoint::new(6, 5)..DisplayPoint::new(6, 5),
7728 DisplayPoint::new(7, 0)..DisplayPoint::new(7, 0)
7729 ]
7730 );
7731 });
7732 }
7733
7734 #[gpui::test]
7735 fn test_add_selection_above_below(cx: &mut gpui::MutableAppContext) {
7736 populate_settings(cx);
7737 let buffer = MultiBuffer::build_simple("abc\ndefghi\n\njk\nlmno\n", cx);
7738 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
7739
7740 view.update(cx, |view, cx| {
7741 view.select_display_ranges(&[DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)], cx);
7742 });
7743 view.update(cx, |view, cx| {
7744 view.add_selection_above(&AddSelectionAbove, cx);
7745 assert_eq!(
7746 view.selected_display_ranges(cx),
7747 vec![
7748 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
7749 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)
7750 ]
7751 );
7752 });
7753
7754 view.update(cx, |view, cx| {
7755 view.add_selection_above(&AddSelectionAbove, cx);
7756 assert_eq!(
7757 view.selected_display_ranges(cx),
7758 vec![
7759 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
7760 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)
7761 ]
7762 );
7763 });
7764
7765 view.update(cx, |view, cx| {
7766 view.add_selection_below(&AddSelectionBelow, cx);
7767 assert_eq!(
7768 view.selected_display_ranges(cx),
7769 vec![DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)]
7770 );
7771 });
7772
7773 view.update(cx, |view, cx| {
7774 view.add_selection_below(&AddSelectionBelow, cx);
7775 assert_eq!(
7776 view.selected_display_ranges(cx),
7777 vec![
7778 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3),
7779 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 3)
7780 ]
7781 );
7782 });
7783
7784 view.update(cx, |view, cx| {
7785 view.add_selection_below(&AddSelectionBelow, cx);
7786 assert_eq!(
7787 view.selected_display_ranges(cx),
7788 vec![
7789 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3),
7790 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 3)
7791 ]
7792 );
7793 });
7794
7795 view.update(cx, |view, cx| {
7796 view.select_display_ranges(&[DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3)], cx);
7797 });
7798 view.update(cx, |view, cx| {
7799 view.add_selection_below(&AddSelectionBelow, cx);
7800 assert_eq!(
7801 view.selected_display_ranges(cx),
7802 vec![
7803 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
7804 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 3)
7805 ]
7806 );
7807 });
7808
7809 view.update(cx, |view, cx| {
7810 view.add_selection_below(&AddSelectionBelow, cx);
7811 assert_eq!(
7812 view.selected_display_ranges(cx),
7813 vec![
7814 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
7815 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 3)
7816 ]
7817 );
7818 });
7819
7820 view.update(cx, |view, cx| {
7821 view.add_selection_above(&AddSelectionAbove, cx);
7822 assert_eq!(
7823 view.selected_display_ranges(cx),
7824 vec![DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3)]
7825 );
7826 });
7827
7828 view.update(cx, |view, cx| {
7829 view.add_selection_above(&AddSelectionAbove, cx);
7830 assert_eq!(
7831 view.selected_display_ranges(cx),
7832 vec![DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3)]
7833 );
7834 });
7835
7836 view.update(cx, |view, cx| {
7837 view.select_display_ranges(&[DisplayPoint::new(0, 1)..DisplayPoint::new(1, 4)], cx);
7838 view.add_selection_below(&AddSelectionBelow, cx);
7839 assert_eq!(
7840 view.selected_display_ranges(cx),
7841 vec![
7842 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
7843 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 4),
7844 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 2),
7845 ]
7846 );
7847 });
7848
7849 view.update(cx, |view, cx| {
7850 view.add_selection_below(&AddSelectionBelow, cx);
7851 assert_eq!(
7852 view.selected_display_ranges(cx),
7853 vec![
7854 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
7855 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 4),
7856 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 2),
7857 DisplayPoint::new(4, 1)..DisplayPoint::new(4, 4),
7858 ]
7859 );
7860 });
7861
7862 view.update(cx, |view, cx| {
7863 view.add_selection_above(&AddSelectionAbove, cx);
7864 assert_eq!(
7865 view.selected_display_ranges(cx),
7866 vec![
7867 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
7868 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 4),
7869 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 2),
7870 ]
7871 );
7872 });
7873
7874 view.update(cx, |view, cx| {
7875 view.select_display_ranges(&[DisplayPoint::new(4, 3)..DisplayPoint::new(1, 1)], cx);
7876 });
7877 view.update(cx, |view, cx| {
7878 view.add_selection_above(&AddSelectionAbove, cx);
7879 assert_eq!(
7880 view.selected_display_ranges(cx),
7881 vec![
7882 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 1),
7883 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 1),
7884 DisplayPoint::new(3, 2)..DisplayPoint::new(3, 1),
7885 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 1),
7886 ]
7887 );
7888 });
7889
7890 view.update(cx, |view, cx| {
7891 view.add_selection_below(&AddSelectionBelow, cx);
7892 assert_eq!(
7893 view.selected_display_ranges(cx),
7894 vec![
7895 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 1),
7896 DisplayPoint::new(3, 2)..DisplayPoint::new(3, 1),
7897 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 1),
7898 ]
7899 );
7900 });
7901 }
7902
7903 #[gpui::test]
7904 async fn test_select_larger_smaller_syntax_node(cx: &mut gpui::TestAppContext) {
7905 cx.update(populate_settings);
7906 let language = Arc::new(Language::new(
7907 LanguageConfig::default(),
7908 Some(tree_sitter_rust::language()),
7909 ));
7910
7911 let text = r#"
7912 use mod1::mod2::{mod3, mod4};
7913
7914 fn fn_1(param1: bool, param2: &str) {
7915 let var1 = "text";
7916 }
7917 "#
7918 .unindent();
7919
7920 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
7921 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
7922 let (_, view) = cx.add_window(|cx| build_editor(buffer, cx));
7923 view.condition(&cx, |view, cx| !view.buffer.read(cx).is_parsing(cx))
7924 .await;
7925
7926 view.update(cx, |view, cx| {
7927 view.select_display_ranges(
7928 &[
7929 DisplayPoint::new(0, 25)..DisplayPoint::new(0, 25),
7930 DisplayPoint::new(2, 24)..DisplayPoint::new(2, 12),
7931 DisplayPoint::new(3, 18)..DisplayPoint::new(3, 18),
7932 ],
7933 cx,
7934 );
7935 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
7936 });
7937 assert_eq!(
7938 view.update(cx, |view, cx| view.selected_display_ranges(cx)),
7939 &[
7940 DisplayPoint::new(0, 23)..DisplayPoint::new(0, 27),
7941 DisplayPoint::new(2, 35)..DisplayPoint::new(2, 7),
7942 DisplayPoint::new(3, 15)..DisplayPoint::new(3, 21),
7943 ]
7944 );
7945
7946 view.update(cx, |view, cx| {
7947 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
7948 });
7949 assert_eq!(
7950 view.update(cx, |view, cx| view.selected_display_ranges(cx)),
7951 &[
7952 DisplayPoint::new(0, 16)..DisplayPoint::new(0, 28),
7953 DisplayPoint::new(4, 1)..DisplayPoint::new(2, 0),
7954 ]
7955 );
7956
7957 view.update(cx, |view, cx| {
7958 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
7959 });
7960 assert_eq!(
7961 view.update(cx, |view, cx| view.selected_display_ranges(cx)),
7962 &[DisplayPoint::new(5, 0)..DisplayPoint::new(0, 0)]
7963 );
7964
7965 // Trying to expand the selected syntax node one more time has no effect.
7966 view.update(cx, |view, cx| {
7967 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
7968 });
7969 assert_eq!(
7970 view.update(cx, |view, cx| view.selected_display_ranges(cx)),
7971 &[DisplayPoint::new(5, 0)..DisplayPoint::new(0, 0)]
7972 );
7973
7974 view.update(cx, |view, cx| {
7975 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
7976 });
7977 assert_eq!(
7978 view.update(cx, |view, cx| view.selected_display_ranges(cx)),
7979 &[
7980 DisplayPoint::new(0, 16)..DisplayPoint::new(0, 28),
7981 DisplayPoint::new(4, 1)..DisplayPoint::new(2, 0),
7982 ]
7983 );
7984
7985 view.update(cx, |view, cx| {
7986 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
7987 });
7988 assert_eq!(
7989 view.update(cx, |view, cx| view.selected_display_ranges(cx)),
7990 &[
7991 DisplayPoint::new(0, 23)..DisplayPoint::new(0, 27),
7992 DisplayPoint::new(2, 35)..DisplayPoint::new(2, 7),
7993 DisplayPoint::new(3, 15)..DisplayPoint::new(3, 21),
7994 ]
7995 );
7996
7997 view.update(cx, |view, cx| {
7998 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
7999 });
8000 assert_eq!(
8001 view.update(cx, |view, cx| view.selected_display_ranges(cx)),
8002 &[
8003 DisplayPoint::new(0, 25)..DisplayPoint::new(0, 25),
8004 DisplayPoint::new(2, 24)..DisplayPoint::new(2, 12),
8005 DisplayPoint::new(3, 18)..DisplayPoint::new(3, 18),
8006 ]
8007 );
8008
8009 // Trying to shrink the selected syntax node one more time has no effect.
8010 view.update(cx, |view, cx| {
8011 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
8012 });
8013 assert_eq!(
8014 view.update(cx, |view, cx| view.selected_display_ranges(cx)),
8015 &[
8016 DisplayPoint::new(0, 25)..DisplayPoint::new(0, 25),
8017 DisplayPoint::new(2, 24)..DisplayPoint::new(2, 12),
8018 DisplayPoint::new(3, 18)..DisplayPoint::new(3, 18),
8019 ]
8020 );
8021
8022 // Ensure that we keep expanding the selection if the larger selection starts or ends within
8023 // a fold.
8024 view.update(cx, |view, cx| {
8025 view.fold_ranges(
8026 vec![
8027 Point::new(0, 21)..Point::new(0, 24),
8028 Point::new(3, 20)..Point::new(3, 22),
8029 ],
8030 cx,
8031 );
8032 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
8033 });
8034 assert_eq!(
8035 view.update(cx, |view, cx| view.selected_display_ranges(cx)),
8036 &[
8037 DisplayPoint::new(0, 16)..DisplayPoint::new(0, 28),
8038 DisplayPoint::new(2, 35)..DisplayPoint::new(2, 7),
8039 DisplayPoint::new(3, 4)..DisplayPoint::new(3, 23),
8040 ]
8041 );
8042 }
8043
8044 #[gpui::test]
8045 async fn test_autoindent_selections(cx: &mut gpui::TestAppContext) {
8046 cx.update(populate_settings);
8047 let language = Arc::new(
8048 Language::new(
8049 LanguageConfig {
8050 brackets: vec![
8051 BracketPair {
8052 start: "{".to_string(),
8053 end: "}".to_string(),
8054 close: false,
8055 newline: true,
8056 },
8057 BracketPair {
8058 start: "(".to_string(),
8059 end: ")".to_string(),
8060 close: false,
8061 newline: true,
8062 },
8063 ],
8064 ..Default::default()
8065 },
8066 Some(tree_sitter_rust::language()),
8067 )
8068 .with_indents_query(
8069 r#"
8070 (_ "(" ")" @end) @indent
8071 (_ "{" "}" @end) @indent
8072 "#,
8073 )
8074 .unwrap(),
8075 );
8076
8077 let text = "fn a() {}";
8078
8079 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
8080 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
8081 let (_, editor) = cx.add_window(|cx| build_editor(buffer, cx));
8082 editor
8083 .condition(&cx, |editor, cx| !editor.buffer.read(cx).is_parsing(cx))
8084 .await;
8085
8086 editor.update(cx, |editor, cx| {
8087 editor.select_ranges([5..5, 8..8, 9..9], None, cx);
8088 editor.newline(&Newline, cx);
8089 assert_eq!(editor.text(cx), "fn a(\n \n) {\n \n}\n");
8090 assert_eq!(
8091 editor.selected_ranges(cx),
8092 &[
8093 Point::new(1, 4)..Point::new(1, 4),
8094 Point::new(3, 4)..Point::new(3, 4),
8095 Point::new(5, 0)..Point::new(5, 0)
8096 ]
8097 );
8098 });
8099 }
8100
8101 #[gpui::test]
8102 async fn test_autoclose_pairs(cx: &mut gpui::TestAppContext) {
8103 cx.update(populate_settings);
8104 let language = Arc::new(Language::new(
8105 LanguageConfig {
8106 brackets: vec![
8107 BracketPair {
8108 start: "{".to_string(),
8109 end: "}".to_string(),
8110 close: true,
8111 newline: true,
8112 },
8113 BracketPair {
8114 start: "/*".to_string(),
8115 end: " */".to_string(),
8116 close: true,
8117 newline: true,
8118 },
8119 ],
8120 autoclose_before: "})]".to_string(),
8121 ..Default::default()
8122 },
8123 Some(tree_sitter_rust::language()),
8124 ));
8125
8126 let text = r#"
8127 a
8128
8129 /
8130
8131 "#
8132 .unindent();
8133
8134 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
8135 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
8136 let (_, view) = cx.add_window(|cx| build_editor(buffer, cx));
8137 view.condition(&cx, |view, cx| !view.buffer.read(cx).is_parsing(cx))
8138 .await;
8139
8140 view.update(cx, |view, cx| {
8141 view.select_display_ranges(
8142 &[
8143 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
8144 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
8145 ],
8146 cx,
8147 );
8148
8149 view.handle_input(&Input("{".to_string()), cx);
8150 view.handle_input(&Input("{".to_string()), cx);
8151 view.handle_input(&Input("{".to_string()), cx);
8152 assert_eq!(
8153 view.text(cx),
8154 "
8155 {{{}}}
8156 {{{}}}
8157 /
8158
8159 "
8160 .unindent()
8161 );
8162
8163 view.move_right(&MoveRight, cx);
8164 view.handle_input(&Input("}".to_string()), cx);
8165 view.handle_input(&Input("}".to_string()), cx);
8166 view.handle_input(&Input("}".to_string()), cx);
8167 assert_eq!(
8168 view.text(cx),
8169 "
8170 {{{}}}}
8171 {{{}}}}
8172 /
8173
8174 "
8175 .unindent()
8176 );
8177
8178 view.undo(&Undo, cx);
8179 view.handle_input(&Input("/".to_string()), cx);
8180 view.handle_input(&Input("*".to_string()), cx);
8181 assert_eq!(
8182 view.text(cx),
8183 "
8184 /* */
8185 /* */
8186 /
8187
8188 "
8189 .unindent()
8190 );
8191
8192 view.undo(&Undo, cx);
8193 view.select_display_ranges(
8194 &[
8195 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
8196 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
8197 ],
8198 cx,
8199 );
8200 view.handle_input(&Input("*".to_string()), cx);
8201 assert_eq!(
8202 view.text(cx),
8203 "
8204 a
8205
8206 /*
8207 *
8208 "
8209 .unindent()
8210 );
8211
8212 // Don't autoclose if the next character isn't whitespace and isn't
8213 // listed in the language's "autoclose_before" section.
8214 view.finalize_last_transaction(cx);
8215 view.select_display_ranges(&[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)], cx);
8216 view.handle_input(&Input("{".to_string()), cx);
8217 assert_eq!(
8218 view.text(cx),
8219 "
8220 {a
8221
8222 /*
8223 *
8224 "
8225 .unindent()
8226 );
8227
8228 view.undo(&Undo, cx);
8229 view.select_display_ranges(&[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1)], cx);
8230 view.handle_input(&Input("{".to_string()), cx);
8231 assert_eq!(
8232 view.text(cx),
8233 "
8234 {a}
8235
8236 /*
8237 *
8238 "
8239 .unindent()
8240 );
8241 assert_eq!(
8242 view.selected_display_ranges(cx),
8243 [DisplayPoint::new(0, 1)..DisplayPoint::new(0, 2)]
8244 );
8245 });
8246 }
8247
8248 #[gpui::test]
8249 async fn test_snippets(cx: &mut gpui::TestAppContext) {
8250 cx.update(populate_settings);
8251
8252 let text = "
8253 a. b
8254 a. b
8255 a. b
8256 "
8257 .unindent();
8258 let buffer = cx.update(|cx| MultiBuffer::build_simple(&text, cx));
8259 let (_, editor) = cx.add_window(|cx| build_editor(buffer, cx));
8260
8261 editor.update(cx, |editor, cx| {
8262 let buffer = &editor.snapshot(cx).buffer_snapshot;
8263 let snippet = Snippet::parse("f(${1:one}, ${2:two}, ${1:three})$0").unwrap();
8264 let insertion_ranges = [
8265 Point::new(0, 2).to_offset(buffer)..Point::new(0, 2).to_offset(buffer),
8266 Point::new(1, 2).to_offset(buffer)..Point::new(1, 2).to_offset(buffer),
8267 Point::new(2, 2).to_offset(buffer)..Point::new(2, 2).to_offset(buffer),
8268 ];
8269
8270 editor
8271 .insert_snippet(&insertion_ranges, snippet, cx)
8272 .unwrap();
8273 assert_eq!(
8274 editor.text(cx),
8275 "
8276 a.f(one, two, three) b
8277 a.f(one, two, three) b
8278 a.f(one, two, three) b
8279 "
8280 .unindent()
8281 );
8282 assert_eq!(
8283 editor.selected_ranges::<Point>(cx),
8284 &[
8285 Point::new(0, 4)..Point::new(0, 7),
8286 Point::new(0, 14)..Point::new(0, 19),
8287 Point::new(1, 4)..Point::new(1, 7),
8288 Point::new(1, 14)..Point::new(1, 19),
8289 Point::new(2, 4)..Point::new(2, 7),
8290 Point::new(2, 14)..Point::new(2, 19),
8291 ]
8292 );
8293
8294 // Can't move earlier than the first tab stop
8295 editor.move_to_prev_snippet_tabstop(cx);
8296 assert_eq!(
8297 editor.selected_ranges::<Point>(cx),
8298 &[
8299 Point::new(0, 4)..Point::new(0, 7),
8300 Point::new(0, 14)..Point::new(0, 19),
8301 Point::new(1, 4)..Point::new(1, 7),
8302 Point::new(1, 14)..Point::new(1, 19),
8303 Point::new(2, 4)..Point::new(2, 7),
8304 Point::new(2, 14)..Point::new(2, 19),
8305 ]
8306 );
8307
8308 assert!(editor.move_to_next_snippet_tabstop(cx));
8309 assert_eq!(
8310 editor.selected_ranges::<Point>(cx),
8311 &[
8312 Point::new(0, 9)..Point::new(0, 12),
8313 Point::new(1, 9)..Point::new(1, 12),
8314 Point::new(2, 9)..Point::new(2, 12)
8315 ]
8316 );
8317
8318 editor.move_to_prev_snippet_tabstop(cx);
8319 assert_eq!(
8320 editor.selected_ranges::<Point>(cx),
8321 &[
8322 Point::new(0, 4)..Point::new(0, 7),
8323 Point::new(0, 14)..Point::new(0, 19),
8324 Point::new(1, 4)..Point::new(1, 7),
8325 Point::new(1, 14)..Point::new(1, 19),
8326 Point::new(2, 4)..Point::new(2, 7),
8327 Point::new(2, 14)..Point::new(2, 19),
8328 ]
8329 );
8330
8331 assert!(editor.move_to_next_snippet_tabstop(cx));
8332 assert!(editor.move_to_next_snippet_tabstop(cx));
8333 assert_eq!(
8334 editor.selected_ranges::<Point>(cx),
8335 &[
8336 Point::new(0, 20)..Point::new(0, 20),
8337 Point::new(1, 20)..Point::new(1, 20),
8338 Point::new(2, 20)..Point::new(2, 20)
8339 ]
8340 );
8341
8342 // As soon as the last tab stop is reached, snippet state is gone
8343 editor.move_to_prev_snippet_tabstop(cx);
8344 assert_eq!(
8345 editor.selected_ranges::<Point>(cx),
8346 &[
8347 Point::new(0, 20)..Point::new(0, 20),
8348 Point::new(1, 20)..Point::new(1, 20),
8349 Point::new(2, 20)..Point::new(2, 20)
8350 ]
8351 );
8352 });
8353 }
8354
8355 #[gpui::test]
8356 async fn test_completion(cx: &mut gpui::TestAppContext) {
8357 cx.update(populate_settings);
8358
8359 let (mut language_server_config, mut fake_servers) = LanguageServerConfig::fake();
8360 language_server_config.set_fake_capabilities(lsp::ServerCapabilities {
8361 completion_provider: Some(lsp::CompletionOptions {
8362 trigger_characters: Some(vec![".".to_string(), ":".to_string()]),
8363 ..Default::default()
8364 }),
8365 ..Default::default()
8366 });
8367 let language = Arc::new(Language::new(
8368 LanguageConfig {
8369 name: "Rust".into(),
8370 path_suffixes: vec!["rs".to_string()],
8371 language_server: Some(language_server_config),
8372 ..Default::default()
8373 },
8374 Some(tree_sitter_rust::language()),
8375 ));
8376
8377 let text = "
8378 one
8379 two
8380 three
8381 "
8382 .unindent();
8383
8384 let fs = FakeFs::new(cx.background().clone());
8385 fs.insert_file("/file.rs", text).await;
8386
8387 let project = Project::test(fs, cx);
8388 project.update(cx, |project, _| project.languages().add(language));
8389
8390 let worktree_id = project
8391 .update(cx, |project, cx| {
8392 project.find_or_create_local_worktree("/file.rs", true, cx)
8393 })
8394 .await
8395 .unwrap()
8396 .0
8397 .read_with(cx, |tree, _| tree.id());
8398 let buffer = project
8399 .update(cx, |project, cx| project.open_buffer((worktree_id, ""), cx))
8400 .await
8401 .unwrap();
8402 let mut fake_server = fake_servers.next().await.unwrap();
8403
8404 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
8405 let (_, editor) = cx.add_window(|cx| build_editor(buffer, cx));
8406
8407 editor.update(cx, |editor, cx| {
8408 editor.project = Some(project);
8409 editor.select_ranges([Point::new(0, 3)..Point::new(0, 3)], None, cx);
8410 editor.handle_input(&Input(".".to_string()), cx);
8411 });
8412
8413 handle_completion_request(
8414 &mut fake_server,
8415 "/file.rs",
8416 Point::new(0, 4),
8417 vec![
8418 (Point::new(0, 4)..Point::new(0, 4), "first_completion"),
8419 (Point::new(0, 4)..Point::new(0, 4), "second_completion"),
8420 ],
8421 )
8422 .await;
8423 editor
8424 .condition(&cx, |editor, _| editor.context_menu_visible())
8425 .await;
8426
8427 let apply_additional_edits = editor.update(cx, |editor, cx| {
8428 editor.move_down(&MoveDown, cx);
8429 let apply_additional_edits = editor
8430 .confirm_completion(&ConfirmCompletion(None), cx)
8431 .unwrap();
8432 assert_eq!(
8433 editor.text(cx),
8434 "
8435 one.second_completion
8436 two
8437 three
8438 "
8439 .unindent()
8440 );
8441 apply_additional_edits
8442 });
8443
8444 handle_resolve_completion_request(
8445 &mut fake_server,
8446 Some((Point::new(2, 5)..Point::new(2, 5), "\nadditional edit")),
8447 )
8448 .await;
8449 apply_additional_edits.await.unwrap();
8450 assert_eq!(
8451 editor.read_with(cx, |editor, cx| editor.text(cx)),
8452 "
8453 one.second_completion
8454 two
8455 three
8456 additional edit
8457 "
8458 .unindent()
8459 );
8460
8461 editor.update(cx, |editor, cx| {
8462 editor.select_ranges(
8463 [
8464 Point::new(1, 3)..Point::new(1, 3),
8465 Point::new(2, 5)..Point::new(2, 5),
8466 ],
8467 None,
8468 cx,
8469 );
8470
8471 editor.handle_input(&Input(" ".to_string()), cx);
8472 assert!(editor.context_menu.is_none());
8473 editor.handle_input(&Input("s".to_string()), cx);
8474 assert!(editor.context_menu.is_none());
8475 });
8476
8477 handle_completion_request(
8478 &mut fake_server,
8479 "/file.rs",
8480 Point::new(2, 7),
8481 vec![
8482 (Point::new(2, 6)..Point::new(2, 7), "fourth_completion"),
8483 (Point::new(2, 6)..Point::new(2, 7), "fifth_completion"),
8484 (Point::new(2, 6)..Point::new(2, 7), "sixth_completion"),
8485 ],
8486 )
8487 .await;
8488 editor
8489 .condition(&cx, |editor, _| editor.context_menu_visible())
8490 .await;
8491
8492 editor.update(cx, |editor, cx| {
8493 editor.handle_input(&Input("i".to_string()), cx);
8494 });
8495
8496 handle_completion_request(
8497 &mut fake_server,
8498 "/file.rs",
8499 Point::new(2, 8),
8500 vec![
8501 (Point::new(2, 6)..Point::new(2, 8), "fourth_completion"),
8502 (Point::new(2, 6)..Point::new(2, 8), "fifth_completion"),
8503 (Point::new(2, 6)..Point::new(2, 8), "sixth_completion"),
8504 ],
8505 )
8506 .await;
8507 editor
8508 .condition(&cx, |editor, _| editor.context_menu_visible())
8509 .await;
8510
8511 let apply_additional_edits = editor.update(cx, |editor, cx| {
8512 let apply_additional_edits = editor
8513 .confirm_completion(&ConfirmCompletion(None), cx)
8514 .unwrap();
8515 assert_eq!(
8516 editor.text(cx),
8517 "
8518 one.second_completion
8519 two sixth_completion
8520 three sixth_completion
8521 additional edit
8522 "
8523 .unindent()
8524 );
8525 apply_additional_edits
8526 });
8527 handle_resolve_completion_request(&mut fake_server, None).await;
8528 apply_additional_edits.await.unwrap();
8529
8530 async fn handle_completion_request(
8531 fake: &mut FakeLanguageServer,
8532 path: &'static str,
8533 position: Point,
8534 completions: Vec<(Range<Point>, &'static str)>,
8535 ) {
8536 fake.handle_request::<lsp::request::Completion, _>(move |params, _| {
8537 assert_eq!(
8538 params.text_document_position.text_document.uri,
8539 lsp::Url::from_file_path(path).unwrap()
8540 );
8541 assert_eq!(
8542 params.text_document_position.position,
8543 lsp::Position::new(position.row, position.column)
8544 );
8545 Some(lsp::CompletionResponse::Array(
8546 completions
8547 .iter()
8548 .map(|(range, new_text)| lsp::CompletionItem {
8549 label: new_text.to_string(),
8550 text_edit: Some(lsp::CompletionTextEdit::Edit(lsp::TextEdit {
8551 range: lsp::Range::new(
8552 lsp::Position::new(range.start.row, range.start.column),
8553 lsp::Position::new(range.start.row, range.start.column),
8554 ),
8555 new_text: new_text.to_string(),
8556 })),
8557 ..Default::default()
8558 })
8559 .collect(),
8560 ))
8561 })
8562 .next()
8563 .await;
8564 }
8565
8566 async fn handle_resolve_completion_request(
8567 fake: &mut FakeLanguageServer,
8568 edit: Option<(Range<Point>, &'static str)>,
8569 ) {
8570 fake.handle_request::<lsp::request::ResolveCompletionItem, _>(move |_, _| {
8571 lsp::CompletionItem {
8572 additional_text_edits: edit.clone().map(|(range, new_text)| {
8573 vec![lsp::TextEdit::new(
8574 lsp::Range::new(
8575 lsp::Position::new(range.start.row, range.start.column),
8576 lsp::Position::new(range.end.row, range.end.column),
8577 ),
8578 new_text.to_string(),
8579 )]
8580 }),
8581 ..Default::default()
8582 }
8583 })
8584 .next()
8585 .await;
8586 }
8587 }
8588
8589 #[gpui::test]
8590 async fn test_toggle_comment(cx: &mut gpui::TestAppContext) {
8591 cx.update(populate_settings);
8592 let language = Arc::new(Language::new(
8593 LanguageConfig {
8594 line_comment: Some("// ".to_string()),
8595 ..Default::default()
8596 },
8597 Some(tree_sitter_rust::language()),
8598 ));
8599
8600 let text = "
8601 fn a() {
8602 //b();
8603 // c();
8604 // d();
8605 }
8606 "
8607 .unindent();
8608
8609 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
8610 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
8611 let (_, view) = cx.add_window(|cx| build_editor(buffer, cx));
8612
8613 view.update(cx, |editor, cx| {
8614 // If multiple selections intersect a line, the line is only
8615 // toggled once.
8616 editor.select_display_ranges(
8617 &[
8618 DisplayPoint::new(1, 3)..DisplayPoint::new(2, 3),
8619 DisplayPoint::new(3, 5)..DisplayPoint::new(3, 6),
8620 ],
8621 cx,
8622 );
8623 editor.toggle_comments(&ToggleComments, cx);
8624 assert_eq!(
8625 editor.text(cx),
8626 "
8627 fn a() {
8628 b();
8629 c();
8630 d();
8631 }
8632 "
8633 .unindent()
8634 );
8635
8636 // The comment prefix is inserted at the same column for every line
8637 // in a selection.
8638 editor.select_display_ranges(&[DisplayPoint::new(1, 3)..DisplayPoint::new(3, 6)], cx);
8639 editor.toggle_comments(&ToggleComments, cx);
8640 assert_eq!(
8641 editor.text(cx),
8642 "
8643 fn a() {
8644 // b();
8645 // c();
8646 // d();
8647 }
8648 "
8649 .unindent()
8650 );
8651
8652 // If a selection ends at the beginning of a line, that line is not toggled.
8653 editor.select_display_ranges(&[DisplayPoint::new(2, 0)..DisplayPoint::new(3, 0)], cx);
8654 editor.toggle_comments(&ToggleComments, cx);
8655 assert_eq!(
8656 editor.text(cx),
8657 "
8658 fn a() {
8659 // b();
8660 c();
8661 // d();
8662 }
8663 "
8664 .unindent()
8665 );
8666 });
8667 }
8668
8669 #[gpui::test]
8670 fn test_editing_disjoint_excerpts(cx: &mut gpui::MutableAppContext) {
8671 populate_settings(cx);
8672 let buffer = cx.add_model(|cx| Buffer::new(0, sample_text(3, 4, 'a'), cx));
8673 let multibuffer = cx.add_model(|cx| {
8674 let mut multibuffer = MultiBuffer::new(0);
8675 multibuffer.push_excerpts(
8676 buffer.clone(),
8677 [
8678 Point::new(0, 0)..Point::new(0, 4),
8679 Point::new(1, 0)..Point::new(1, 4),
8680 ],
8681 cx,
8682 );
8683 multibuffer
8684 });
8685
8686 assert_eq!(multibuffer.read(cx).read(cx).text(), "aaaa\nbbbb");
8687
8688 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(multibuffer, cx));
8689 view.update(cx, |view, cx| {
8690 assert_eq!(view.text(cx), "aaaa\nbbbb");
8691 view.select_ranges(
8692 [
8693 Point::new(0, 0)..Point::new(0, 0),
8694 Point::new(1, 0)..Point::new(1, 0),
8695 ],
8696 None,
8697 cx,
8698 );
8699
8700 view.handle_input(&Input("X".to_string()), cx);
8701 assert_eq!(view.text(cx), "Xaaaa\nXbbbb");
8702 assert_eq!(
8703 view.selected_ranges(cx),
8704 [
8705 Point::new(0, 1)..Point::new(0, 1),
8706 Point::new(1, 1)..Point::new(1, 1),
8707 ]
8708 )
8709 });
8710 }
8711
8712 #[gpui::test]
8713 fn test_editing_overlapping_excerpts(cx: &mut gpui::MutableAppContext) {
8714 populate_settings(cx);
8715 let buffer = cx.add_model(|cx| Buffer::new(0, sample_text(3, 4, 'a'), cx));
8716 let multibuffer = cx.add_model(|cx| {
8717 let mut multibuffer = MultiBuffer::new(0);
8718 multibuffer.push_excerpts(
8719 buffer,
8720 [
8721 Point::new(0, 0)..Point::new(1, 4),
8722 Point::new(1, 0)..Point::new(2, 4),
8723 ],
8724 cx,
8725 );
8726 multibuffer
8727 });
8728
8729 assert_eq!(
8730 multibuffer.read(cx).read(cx).text(),
8731 "aaaa\nbbbb\nbbbb\ncccc"
8732 );
8733
8734 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(multibuffer, cx));
8735 view.update(cx, |view, cx| {
8736 view.select_ranges(
8737 [
8738 Point::new(1, 1)..Point::new(1, 1),
8739 Point::new(2, 3)..Point::new(2, 3),
8740 ],
8741 None,
8742 cx,
8743 );
8744
8745 view.handle_input(&Input("X".to_string()), cx);
8746 assert_eq!(view.text(cx), "aaaa\nbXbbXb\nbXbbXb\ncccc");
8747 assert_eq!(
8748 view.selected_ranges(cx),
8749 [
8750 Point::new(1, 2)..Point::new(1, 2),
8751 Point::new(2, 5)..Point::new(2, 5),
8752 ]
8753 );
8754
8755 view.newline(&Newline, cx);
8756 assert_eq!(view.text(cx), "aaaa\nbX\nbbX\nb\nbX\nbbX\nb\ncccc");
8757 assert_eq!(
8758 view.selected_ranges(cx),
8759 [
8760 Point::new(2, 0)..Point::new(2, 0),
8761 Point::new(6, 0)..Point::new(6, 0),
8762 ]
8763 );
8764 });
8765 }
8766
8767 #[gpui::test]
8768 fn test_refresh_selections(cx: &mut gpui::MutableAppContext) {
8769 populate_settings(cx);
8770 let buffer = cx.add_model(|cx| Buffer::new(0, sample_text(3, 4, 'a'), cx));
8771 let mut excerpt1_id = None;
8772 let multibuffer = cx.add_model(|cx| {
8773 let mut multibuffer = MultiBuffer::new(0);
8774 excerpt1_id = multibuffer
8775 .push_excerpts(
8776 buffer.clone(),
8777 [
8778 Point::new(0, 0)..Point::new(1, 4),
8779 Point::new(1, 0)..Point::new(2, 4),
8780 ],
8781 cx,
8782 )
8783 .into_iter()
8784 .next();
8785 multibuffer
8786 });
8787 assert_eq!(
8788 multibuffer.read(cx).read(cx).text(),
8789 "aaaa\nbbbb\nbbbb\ncccc"
8790 );
8791 let (_, editor) = cx.add_window(Default::default(), |cx| {
8792 let mut editor = build_editor(multibuffer.clone(), cx);
8793 let snapshot = editor.snapshot(cx);
8794 editor.select_ranges([Point::new(1, 3)..Point::new(1, 3)], None, cx);
8795 editor.begin_selection(Point::new(2, 1).to_display_point(&snapshot), true, 1, cx);
8796 assert_eq!(
8797 editor.selected_ranges(cx),
8798 [
8799 Point::new(1, 3)..Point::new(1, 3),
8800 Point::new(2, 1)..Point::new(2, 1),
8801 ]
8802 );
8803 editor
8804 });
8805
8806 // Refreshing selections is a no-op when excerpts haven't changed.
8807 editor.update(cx, |editor, cx| {
8808 editor.refresh_selections(cx);
8809 assert_eq!(
8810 editor.selected_ranges(cx),
8811 [
8812 Point::new(1, 3)..Point::new(1, 3),
8813 Point::new(2, 1)..Point::new(2, 1),
8814 ]
8815 );
8816 });
8817
8818 multibuffer.update(cx, |multibuffer, cx| {
8819 multibuffer.remove_excerpts([&excerpt1_id.unwrap()], cx);
8820 });
8821 editor.update(cx, |editor, cx| {
8822 // Removing an excerpt causes the first selection to become degenerate.
8823 assert_eq!(
8824 editor.selected_ranges(cx),
8825 [
8826 Point::new(0, 0)..Point::new(0, 0),
8827 Point::new(0, 1)..Point::new(0, 1)
8828 ]
8829 );
8830
8831 // Refreshing selections will relocate the first selection to the original buffer
8832 // location.
8833 editor.refresh_selections(cx);
8834 assert_eq!(
8835 editor.selected_ranges(cx),
8836 [
8837 Point::new(0, 1)..Point::new(0, 1),
8838 Point::new(0, 3)..Point::new(0, 3)
8839 ]
8840 );
8841 assert!(editor.pending_selection.is_some());
8842 });
8843 }
8844
8845 #[gpui::test]
8846 fn test_refresh_selections_while_selecting_with_mouse(cx: &mut gpui::MutableAppContext) {
8847 populate_settings(cx);
8848 let buffer = cx.add_model(|cx| Buffer::new(0, sample_text(3, 4, 'a'), cx));
8849 let mut excerpt1_id = None;
8850 let multibuffer = cx.add_model(|cx| {
8851 let mut multibuffer = MultiBuffer::new(0);
8852 excerpt1_id = multibuffer
8853 .push_excerpts(
8854 buffer.clone(),
8855 [
8856 Point::new(0, 0)..Point::new(1, 4),
8857 Point::new(1, 0)..Point::new(2, 4),
8858 ],
8859 cx,
8860 )
8861 .into_iter()
8862 .next();
8863 multibuffer
8864 });
8865 assert_eq!(
8866 multibuffer.read(cx).read(cx).text(),
8867 "aaaa\nbbbb\nbbbb\ncccc"
8868 );
8869 let (_, editor) = cx.add_window(Default::default(), |cx| {
8870 let mut editor = build_editor(multibuffer.clone(), cx);
8871 let snapshot = editor.snapshot(cx);
8872 editor.begin_selection(Point::new(1, 3).to_display_point(&snapshot), false, 1, cx);
8873 assert_eq!(
8874 editor.selected_ranges(cx),
8875 [Point::new(1, 3)..Point::new(1, 3)]
8876 );
8877 editor
8878 });
8879
8880 multibuffer.update(cx, |multibuffer, cx| {
8881 multibuffer.remove_excerpts([&excerpt1_id.unwrap()], cx);
8882 });
8883 editor.update(cx, |editor, cx| {
8884 assert_eq!(
8885 editor.selected_ranges(cx),
8886 [Point::new(0, 0)..Point::new(0, 0)]
8887 );
8888
8889 // Ensure we don't panic when selections are refreshed and that the pending selection is finalized.
8890 editor.refresh_selections(cx);
8891 assert_eq!(
8892 editor.selected_ranges(cx),
8893 [Point::new(0, 3)..Point::new(0, 3)]
8894 );
8895 assert!(editor.pending_selection.is_some());
8896 });
8897 }
8898
8899 #[gpui::test]
8900 async fn test_extra_newline_insertion(cx: &mut gpui::TestAppContext) {
8901 cx.update(populate_settings);
8902 let language = Arc::new(Language::new(
8903 LanguageConfig {
8904 brackets: vec![
8905 BracketPair {
8906 start: "{".to_string(),
8907 end: "}".to_string(),
8908 close: true,
8909 newline: true,
8910 },
8911 BracketPair {
8912 start: "/* ".to_string(),
8913 end: " */".to_string(),
8914 close: true,
8915 newline: true,
8916 },
8917 ],
8918 ..Default::default()
8919 },
8920 Some(tree_sitter_rust::language()),
8921 ));
8922
8923 let text = concat!(
8924 "{ }\n", // Suppress rustfmt
8925 " x\n", //
8926 " /* */\n", //
8927 "x\n", //
8928 "{{} }\n", //
8929 );
8930
8931 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
8932 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
8933 let (_, view) = cx.add_window(|cx| build_editor(buffer, cx));
8934 view.condition(&cx, |view, cx| !view.buffer.read(cx).is_parsing(cx))
8935 .await;
8936
8937 view.update(cx, |view, cx| {
8938 view.select_display_ranges(
8939 &[
8940 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 3),
8941 DisplayPoint::new(2, 5)..DisplayPoint::new(2, 5),
8942 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 4),
8943 ],
8944 cx,
8945 );
8946 view.newline(&Newline, cx);
8947
8948 assert_eq!(
8949 view.buffer().read(cx).read(cx).text(),
8950 concat!(
8951 "{ \n", // Suppress rustfmt
8952 "\n", //
8953 "}\n", //
8954 " x\n", //
8955 " /* \n", //
8956 " \n", //
8957 " */\n", //
8958 "x\n", //
8959 "{{} \n", //
8960 "}\n", //
8961 )
8962 );
8963 });
8964 }
8965
8966 #[gpui::test]
8967 fn test_highlighted_ranges(cx: &mut gpui::MutableAppContext) {
8968 let buffer = MultiBuffer::build_simple(&sample_text(16, 8, 'a'), cx);
8969 populate_settings(cx);
8970 let (_, editor) = cx.add_window(Default::default(), |cx| build_editor(buffer.clone(), cx));
8971
8972 editor.update(cx, |editor, cx| {
8973 struct Type1;
8974 struct Type2;
8975
8976 let buffer = buffer.read(cx).snapshot(cx);
8977
8978 let anchor_range = |range: Range<Point>| {
8979 buffer.anchor_after(range.start)..buffer.anchor_after(range.end)
8980 };
8981
8982 editor.highlight_background::<Type1>(
8983 vec![
8984 anchor_range(Point::new(2, 1)..Point::new(2, 3)),
8985 anchor_range(Point::new(4, 2)..Point::new(4, 4)),
8986 anchor_range(Point::new(6, 3)..Point::new(6, 5)),
8987 anchor_range(Point::new(8, 4)..Point::new(8, 6)),
8988 ],
8989 Color::red(),
8990 cx,
8991 );
8992 editor.highlight_background::<Type2>(
8993 vec![
8994 anchor_range(Point::new(3, 2)..Point::new(3, 5)),
8995 anchor_range(Point::new(5, 3)..Point::new(5, 6)),
8996 anchor_range(Point::new(7, 4)..Point::new(7, 7)),
8997 anchor_range(Point::new(9, 5)..Point::new(9, 8)),
8998 ],
8999 Color::green(),
9000 cx,
9001 );
9002
9003 let snapshot = editor.snapshot(cx);
9004 let mut highlighted_ranges = editor.background_highlights_in_range(
9005 anchor_range(Point::new(3, 4)..Point::new(7, 4)),
9006 &snapshot,
9007 );
9008 // Enforce a consistent ordering based on color without relying on the ordering of the
9009 // highlight's `TypeId` which is non-deterministic.
9010 highlighted_ranges.sort_unstable_by_key(|(_, color)| *color);
9011 assert_eq!(
9012 highlighted_ranges,
9013 &[
9014 (
9015 DisplayPoint::new(3, 2)..DisplayPoint::new(3, 5),
9016 Color::green(),
9017 ),
9018 (
9019 DisplayPoint::new(5, 3)..DisplayPoint::new(5, 6),
9020 Color::green(),
9021 ),
9022 (
9023 DisplayPoint::new(4, 2)..DisplayPoint::new(4, 4),
9024 Color::red(),
9025 ),
9026 (
9027 DisplayPoint::new(6, 3)..DisplayPoint::new(6, 5),
9028 Color::red(),
9029 ),
9030 ]
9031 );
9032 assert_eq!(
9033 editor.background_highlights_in_range(
9034 anchor_range(Point::new(5, 6)..Point::new(6, 4)),
9035 &snapshot,
9036 ),
9037 &[(
9038 DisplayPoint::new(6, 3)..DisplayPoint::new(6, 5),
9039 Color::red(),
9040 )]
9041 );
9042 });
9043 }
9044
9045 #[gpui::test]
9046 fn test_following(cx: &mut gpui::MutableAppContext) {
9047 let buffer = MultiBuffer::build_simple(&sample_text(16, 8, 'a'), cx);
9048 populate_settings(cx);
9049
9050 let (_, leader) = cx.add_window(Default::default(), |cx| build_editor(buffer.clone(), cx));
9051 let (_, follower) = cx.add_window(
9052 WindowOptions {
9053 bounds: WindowBounds::Fixed(RectF::from_points(vec2f(0., 0.), vec2f(10., 80.))),
9054 ..Default::default()
9055 },
9056 |cx| build_editor(buffer.clone(), cx),
9057 );
9058
9059 let pending_update = Rc::new(RefCell::new(None));
9060 follower.update(cx, {
9061 let update = pending_update.clone();
9062 |_, cx| {
9063 cx.subscribe(&leader, move |_, leader, event, cx| {
9064 leader
9065 .read(cx)
9066 .add_event_to_update_proto(event, &mut *update.borrow_mut(), cx);
9067 })
9068 .detach();
9069 }
9070 });
9071
9072 // Update the selections only
9073 leader.update(cx, |leader, cx| {
9074 leader.select_ranges([1..1], None, cx);
9075 });
9076 follower.update(cx, |follower, cx| {
9077 follower
9078 .apply_update_proto(pending_update.borrow_mut().take().unwrap(), cx)
9079 .unwrap();
9080 });
9081 assert_eq!(follower.read(cx).selected_ranges(cx), vec![1..1]);
9082
9083 // Update the scroll position only
9084 leader.update(cx, |leader, cx| {
9085 leader.set_scroll_position(vec2f(1.5, 3.5), cx);
9086 });
9087 follower.update(cx, |follower, cx| {
9088 follower
9089 .apply_update_proto(pending_update.borrow_mut().take().unwrap(), cx)
9090 .unwrap();
9091 });
9092 assert_eq!(
9093 follower.update(cx, |follower, cx| follower.scroll_position(cx)),
9094 vec2f(1.5, 3.5)
9095 );
9096
9097 // Update the selections and scroll position
9098 leader.update(cx, |leader, cx| {
9099 leader.select_ranges([0..0], None, cx);
9100 leader.request_autoscroll(Autoscroll::Newest, cx);
9101 leader.set_scroll_position(vec2f(1.5, 3.5), cx);
9102 });
9103 follower.update(cx, |follower, cx| {
9104 let initial_scroll_position = follower.scroll_position(cx);
9105 follower
9106 .apply_update_proto(pending_update.borrow_mut().take().unwrap(), cx)
9107 .unwrap();
9108 assert_eq!(follower.scroll_position(cx), initial_scroll_position);
9109 assert!(follower.autoscroll_request.is_some());
9110 });
9111 assert_eq!(follower.read(cx).selected_ranges(cx), vec![0..0]);
9112 }
9113
9114 #[test]
9115 fn test_combine_syntax_and_fuzzy_match_highlights() {
9116 let string = "abcdefghijklmnop";
9117 let syntax_ranges = [
9118 (
9119 0..3,
9120 HighlightStyle {
9121 color: Some(Color::red()),
9122 ..Default::default()
9123 },
9124 ),
9125 (
9126 4..8,
9127 HighlightStyle {
9128 color: Some(Color::green()),
9129 ..Default::default()
9130 },
9131 ),
9132 ];
9133 let match_indices = [4, 6, 7, 8];
9134 assert_eq!(
9135 combine_syntax_and_fuzzy_match_highlights(
9136 &string,
9137 Default::default(),
9138 syntax_ranges.into_iter(),
9139 &match_indices,
9140 ),
9141 &[
9142 (
9143 0..3,
9144 HighlightStyle {
9145 color: Some(Color::red()),
9146 ..Default::default()
9147 },
9148 ),
9149 (
9150 4..5,
9151 HighlightStyle {
9152 color: Some(Color::green()),
9153 weight: Some(fonts::Weight::BOLD),
9154 ..Default::default()
9155 },
9156 ),
9157 (
9158 5..6,
9159 HighlightStyle {
9160 color: Some(Color::green()),
9161 ..Default::default()
9162 },
9163 ),
9164 (
9165 6..8,
9166 HighlightStyle {
9167 color: Some(Color::green()),
9168 weight: Some(fonts::Weight::BOLD),
9169 ..Default::default()
9170 },
9171 ),
9172 (
9173 8..9,
9174 HighlightStyle {
9175 weight: Some(fonts::Weight::BOLD),
9176 ..Default::default()
9177 },
9178 ),
9179 ]
9180 );
9181 }
9182
9183 fn empty_range(row: usize, column: usize) -> Range<DisplayPoint> {
9184 let point = DisplayPoint::new(row as u32, column as u32);
9185 point..point
9186 }
9187
9188 fn build_editor(buffer: ModelHandle<MultiBuffer>, cx: &mut ViewContext<Editor>) -> Editor {
9189 Editor::new(EditorMode::Full, buffer, None, None, cx)
9190 }
9191
9192 fn populate_settings(cx: &mut gpui::MutableAppContext) {
9193 let settings = Settings::test(cx);
9194 cx.set_global(settings);
9195 }
9196
9197 fn assert_selection_ranges(
9198 marked_text: &str,
9199 selection_marker_pairs: Vec<(char, char)>,
9200 view: &mut Editor,
9201 cx: &mut ViewContext<Editor>,
9202 ) {
9203 let snapshot = view.snapshot(cx).display_snapshot;
9204 let mut marker_chars = Vec::new();
9205 for (start, end) in selection_marker_pairs.iter() {
9206 marker_chars.push(*start);
9207 marker_chars.push(*end);
9208 }
9209 let (_, markers) = marked_text_by(marked_text, marker_chars);
9210 let asserted_ranges: Vec<Range<DisplayPoint>> = selection_marker_pairs
9211 .iter()
9212 .map(|(start, end)| {
9213 let start = markers.get(start).unwrap()[0].to_display_point(&snapshot);
9214 let end = markers.get(end).unwrap()[0].to_display_point(&snapshot);
9215 start..end
9216 })
9217 .collect();
9218 assert_eq!(
9219 view.selected_display_ranges(cx),
9220 &asserted_ranges[..],
9221 "Assert selections are {}",
9222 marked_text
9223 );
9224 }
9225}
9226
9227trait RangeExt<T> {
9228 fn sorted(&self) -> Range<T>;
9229 fn to_inclusive(&self) -> RangeInclusive<T>;
9230}
9231
9232impl<T: Ord + Clone> RangeExt<T> for Range<T> {
9233 fn sorted(&self) -> Self {
9234 cmp::min(&self.start, &self.end).clone()..cmp::max(&self.start, &self.end).clone()
9235 }
9236
9237 fn to_inclusive(&self) -> RangeInclusive<T> {
9238 self.start.clone()..=self.end.clone()
9239 }
9240}