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!(MoveToPreviousWordBoundary);
92action!(MoveToNextWordBoundary);
93action!(MoveToBeginningOfLine);
94action!(MoveToEndOfLine);
95action!(MoveToBeginning);
96action!(MoveToEnd);
97action!(SelectUp);
98action!(SelectDown);
99action!(SelectLeft);
100action!(SelectRight);
101action!(SelectToPreviousWordBoundary);
102action!(SelectToNextWordBoundary);
103action!(SelectToBeginningOfLine, bool);
104action!(SelectToEndOfLine, bool);
105action!(SelectToBeginning);
106action!(SelectToEnd);
107action!(SelectAll);
108action!(SelectLine);
109action!(SplitSelectionIntoLines);
110action!(AddSelectionAbove);
111action!(AddSelectionBelow);
112action!(SelectNext, bool);
113action!(ToggleComments);
114action!(SelectLargerSyntaxNode);
115action!(SelectSmallerSyntaxNode);
116action!(MoveToEnclosingBracket);
117action!(GoToDiagnostic, Direction);
118action!(GoToDefinition);
119action!(FindAllReferences);
120action!(Rename);
121action!(ConfirmRename);
122action!(PageUp);
123action!(PageDown);
124action!(Fold);
125action!(Unfold);
126action!(FoldSelectedRanges);
127action!(Scroll, Vector2F);
128action!(Select, SelectPhase);
129action!(ShowCompletions);
130action!(ToggleCodeActions, bool);
131action!(ConfirmCompletion, Option<usize>);
132action!(ConfirmCodeAction, Option<usize>);
133action!(OpenExcerpts);
134
135enum DocumentHighlightRead {}
136enum DocumentHighlightWrite {}
137
138#[derive(Copy, Clone, PartialEq, Eq)]
139pub enum Direction {
140 Prev,
141 Next,
142}
143
144pub fn init(cx: &mut MutableAppContext) {
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", MoveToPreviousWordBoundary, Some("Editor")),
204 Binding::new("alt-b", MoveToPreviousWordBoundary, Some("Editor")),
205 Binding::new("alt-right", MoveToNextWordBoundary, Some("Editor")),
206 Binding::new("alt-f", MoveToNextWordBoundary, 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_boundary);
285 cx.add_action(Editor::delete_to_next_word_boundary);
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_boundary);
302 cx.add_action(Editor::move_to_next_word_boundary);
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_boundary);
312 cx.add_action(Editor::select_to_next_word_boundary);
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 SelectionExt {
348 fn offset_range(&self, buffer: &MultiBufferSnapshot) -> Range<usize>;
349 fn point_range(&self, buffer: &MultiBufferSnapshot) -> Range<Point>;
350 fn display_range(&self, map: &DisplaySnapshot) -> Range<DisplayPoint>;
351 fn spanned_rows(&self, include_end_if_at_line_start: bool, map: &DisplaySnapshot)
352 -> Range<u32>;
353}
354
355trait InvalidationRegion {
356 fn ranges(&self) -> &[Range<Anchor>];
357}
358
359#[derive(Clone, Debug)]
360pub enum SelectPhase {
361 Begin {
362 position: DisplayPoint,
363 add: bool,
364 click_count: usize,
365 },
366 BeginColumnar {
367 position: DisplayPoint,
368 overshoot: u32,
369 },
370 Extend {
371 position: DisplayPoint,
372 click_count: usize,
373 },
374 Update {
375 position: DisplayPoint,
376 overshoot: u32,
377 scroll_position: Vector2F,
378 },
379 End,
380}
381
382#[derive(Clone, Debug)]
383pub enum SelectMode {
384 Character,
385 Word(Range<Anchor>),
386 Line(Range<Anchor>),
387 All,
388}
389
390#[derive(PartialEq, Eq)]
391pub enum Autoscroll {
392 Fit,
393 Center,
394 Newest,
395}
396
397#[derive(Copy, Clone, PartialEq, Eq)]
398pub enum EditorMode {
399 SingleLine,
400 AutoHeight { max_lines: usize },
401 Full,
402}
403
404#[derive(Clone)]
405pub enum SoftWrap {
406 None,
407 EditorWidth,
408 Column(u32),
409}
410
411#[derive(Clone)]
412pub struct EditorStyle {
413 pub text: TextStyle,
414 pub placeholder_text: Option<TextStyle>,
415 pub theme: theme::Editor,
416}
417
418type CompletionId = usize;
419
420pub type GetFieldEditorTheme = fn(&theme::Theme) -> theme::FieldEditor;
421
422type OverrideTextStyle = dyn Fn(&EditorStyle) -> Option<HighlightStyle>;
423
424pub struct Editor {
425 handle: WeakViewHandle<Self>,
426 buffer: ModelHandle<MultiBuffer>,
427 display_map: ModelHandle<DisplayMap>,
428 next_selection_id: usize,
429 selections: Arc<[Selection<Anchor>]>,
430 pending_selection: Option<PendingSelection>,
431 columnar_selection_tail: Option<Anchor>,
432 add_selections_state: Option<AddSelectionsState>,
433 select_next_state: Option<SelectNextState>,
434 selection_history:
435 HashMap<TransactionId, (Arc<[Selection<Anchor>]>, Option<Arc<[Selection<Anchor>]>>)>,
436 autoclose_stack: InvalidationStack<BracketPairState>,
437 snippet_stack: InvalidationStack<SnippetState>,
438 select_larger_syntax_node_stack: Vec<Box<[Selection<usize>]>>,
439 active_diagnostics: Option<ActiveDiagnosticGroup>,
440 scroll_position: Vector2F,
441 scroll_top_anchor: Option<Anchor>,
442 autoscroll_request: Option<Autoscroll>,
443 soft_wrap_mode_override: Option<settings::SoftWrap>,
444 get_field_editor_theme: Option<GetFieldEditorTheme>,
445 override_text_style: Option<Box<OverrideTextStyle>>,
446 project: Option<ModelHandle<Project>>,
447 focused: bool,
448 show_local_cursors: bool,
449 show_local_selections: bool,
450 blink_epoch: usize,
451 blinking_paused: bool,
452 mode: EditorMode,
453 vertical_scroll_margin: f32,
454 placeholder_text: Option<Arc<str>>,
455 highlighted_rows: Option<Range<u32>>,
456 background_highlights: BTreeMap<TypeId, (Color, Vec<Range<Anchor>>)>,
457 nav_history: Option<ItemNavHistory>,
458 context_menu: Option<ContextMenu>,
459 completion_tasks: Vec<(CompletionId, Task<Option<()>>)>,
460 next_completion_id: CompletionId,
461 available_code_actions: Option<(ModelHandle<Buffer>, Arc<[CodeAction]>)>,
462 code_actions_task: Option<Task<()>>,
463 document_highlights_task: Option<Task<()>>,
464 pending_rename: Option<RenameState>,
465 searchable: bool,
466 cursor_shape: CursorShape,
467}
468
469pub struct EditorSnapshot {
470 pub mode: EditorMode,
471 pub display_snapshot: DisplaySnapshot,
472 pub placeholder_text: Option<Arc<str>>,
473 is_focused: bool,
474 scroll_position: Vector2F,
475 scroll_top_anchor: Option<Anchor>,
476}
477
478#[derive(Clone)]
479pub struct PendingSelection {
480 selection: Selection<Anchor>,
481 mode: SelectMode,
482}
483
484struct AddSelectionsState {
485 above: bool,
486 stack: Vec<usize>,
487}
488
489struct SelectNextState {
490 query: AhoCorasick,
491 wordwise: bool,
492 done: bool,
493}
494
495struct BracketPairState {
496 ranges: Vec<Range<Anchor>>,
497 pair: BracketPair,
498}
499
500struct SnippetState {
501 ranges: Vec<Vec<Range<Anchor>>>,
502 active_index: usize,
503}
504
505pub struct RenameState {
506 pub range: Range<Anchor>,
507 pub old_name: String,
508 pub editor: ViewHandle<Editor>,
509 block_id: BlockId,
510}
511
512struct InvalidationStack<T>(Vec<T>);
513
514enum ContextMenu {
515 Completions(CompletionsMenu),
516 CodeActions(CodeActionsMenu),
517}
518
519impl ContextMenu {
520 fn select_prev(&mut self, cx: &mut ViewContext<Editor>) -> bool {
521 if self.visible() {
522 match self {
523 ContextMenu::Completions(menu) => menu.select_prev(cx),
524 ContextMenu::CodeActions(menu) => menu.select_prev(cx),
525 }
526 true
527 } else {
528 false
529 }
530 }
531
532 fn select_next(&mut self, cx: &mut ViewContext<Editor>) -> bool {
533 if self.visible() {
534 match self {
535 ContextMenu::Completions(menu) => menu.select_next(cx),
536 ContextMenu::CodeActions(menu) => menu.select_next(cx),
537 }
538 true
539 } else {
540 false
541 }
542 }
543
544 fn visible(&self) -> bool {
545 match self {
546 ContextMenu::Completions(menu) => menu.visible(),
547 ContextMenu::CodeActions(menu) => menu.visible(),
548 }
549 }
550
551 fn render(
552 &self,
553 cursor_position: DisplayPoint,
554 style: EditorStyle,
555 cx: &AppContext,
556 ) -> (DisplayPoint, ElementBox) {
557 match self {
558 ContextMenu::Completions(menu) => (cursor_position, menu.render(style, cx)),
559 ContextMenu::CodeActions(menu) => menu.render(cursor_position, style),
560 }
561 }
562}
563
564struct CompletionsMenu {
565 id: CompletionId,
566 initial_position: Anchor,
567 buffer: ModelHandle<Buffer>,
568 completions: Arc<[Completion]>,
569 match_candidates: Vec<StringMatchCandidate>,
570 matches: Arc<[StringMatch]>,
571 selected_item: usize,
572 list: UniformListState,
573}
574
575impl CompletionsMenu {
576 fn select_prev(&mut self, cx: &mut ViewContext<Editor>) {
577 if self.selected_item > 0 {
578 self.selected_item -= 1;
579 self.list.scroll_to(ScrollTarget::Show(self.selected_item));
580 }
581 cx.notify();
582 }
583
584 fn select_next(&mut self, cx: &mut ViewContext<Editor>) {
585 if self.selected_item + 1 < self.matches.len() {
586 self.selected_item += 1;
587 self.list.scroll_to(ScrollTarget::Show(self.selected_item));
588 }
589 cx.notify();
590 }
591
592 fn visible(&self) -> bool {
593 !self.matches.is_empty()
594 }
595
596 fn render(&self, style: EditorStyle, _: &AppContext) -> ElementBox {
597 enum CompletionTag {}
598
599 let completions = self.completions.clone();
600 let matches = self.matches.clone();
601 let selected_item = self.selected_item;
602 let container_style = style.autocomplete.container;
603 UniformList::new(self.list.clone(), matches.len(), move |range, items, cx| {
604 let start_ix = range.start;
605 for (ix, mat) in matches[range].iter().enumerate() {
606 let completion = &completions[mat.candidate_id];
607 let item_ix = start_ix + ix;
608 items.push(
609 MouseEventHandler::new::<CompletionTag, _, _>(
610 mat.candidate_id,
611 cx,
612 |state, _| {
613 let item_style = if item_ix == selected_item {
614 style.autocomplete.selected_item
615 } else if state.hovered {
616 style.autocomplete.hovered_item
617 } else {
618 style.autocomplete.item
619 };
620
621 Text::new(completion.label.text.clone(), style.text.clone())
622 .with_soft_wrap(false)
623 .with_highlights(combine_syntax_and_fuzzy_match_highlights(
624 &completion.label.text,
625 style.text.color.into(),
626 styled_runs_for_code_label(&completion.label, &style.syntax),
627 &mat.positions,
628 ))
629 .contained()
630 .with_style(item_style)
631 .boxed()
632 },
633 )
634 .with_cursor_style(CursorStyle::PointingHand)
635 .on_mouse_down(move |cx| {
636 cx.dispatch_action(ConfirmCompletion(Some(item_ix)));
637 })
638 .boxed(),
639 );
640 }
641 })
642 .with_width_from_item(
643 self.matches
644 .iter()
645 .enumerate()
646 .max_by_key(|(_, mat)| {
647 self.completions[mat.candidate_id]
648 .label
649 .text
650 .chars()
651 .count()
652 })
653 .map(|(ix, _)| ix),
654 )
655 .contained()
656 .with_style(container_style)
657 .boxed()
658 }
659
660 pub async fn filter(&mut self, query: Option<&str>, executor: Arc<executor::Background>) {
661 let mut matches = if let Some(query) = query {
662 fuzzy::match_strings(
663 &self.match_candidates,
664 query,
665 false,
666 100,
667 &Default::default(),
668 executor,
669 )
670 .await
671 } else {
672 self.match_candidates
673 .iter()
674 .enumerate()
675 .map(|(candidate_id, candidate)| StringMatch {
676 candidate_id,
677 score: Default::default(),
678 positions: Default::default(),
679 string: candidate.string.clone(),
680 })
681 .collect()
682 };
683 matches.sort_unstable_by_key(|mat| {
684 (
685 Reverse(OrderedFloat(mat.score)),
686 self.completions[mat.candidate_id].sort_key(),
687 )
688 });
689
690 for mat in &mut matches {
691 let filter_start = self.completions[mat.candidate_id].label.filter_range.start;
692 for position in &mut mat.positions {
693 *position += filter_start;
694 }
695 }
696
697 self.matches = matches.into();
698 }
699}
700
701#[derive(Clone)]
702struct CodeActionsMenu {
703 actions: Arc<[CodeAction]>,
704 buffer: ModelHandle<Buffer>,
705 selected_item: usize,
706 list: UniformListState,
707 deployed_from_indicator: bool,
708}
709
710impl CodeActionsMenu {
711 fn select_prev(&mut self, cx: &mut ViewContext<Editor>) {
712 if self.selected_item > 0 {
713 self.selected_item -= 1;
714 cx.notify()
715 }
716 }
717
718 fn select_next(&mut self, cx: &mut ViewContext<Editor>) {
719 if self.selected_item + 1 < self.actions.len() {
720 self.selected_item += 1;
721 cx.notify()
722 }
723 }
724
725 fn visible(&self) -> bool {
726 !self.actions.is_empty()
727 }
728
729 fn render(
730 &self,
731 mut cursor_position: DisplayPoint,
732 style: EditorStyle,
733 ) -> (DisplayPoint, ElementBox) {
734 enum ActionTag {}
735
736 let container_style = style.autocomplete.container;
737 let actions = self.actions.clone();
738 let selected_item = self.selected_item;
739 let element =
740 UniformList::new(self.list.clone(), actions.len(), move |range, items, cx| {
741 let start_ix = range.start;
742 for (ix, action) in actions[range].iter().enumerate() {
743 let item_ix = start_ix + ix;
744 items.push(
745 MouseEventHandler::new::<ActionTag, _, _>(item_ix, cx, |state, _| {
746 let item_style = if item_ix == selected_item {
747 style.autocomplete.selected_item
748 } else if state.hovered {
749 style.autocomplete.hovered_item
750 } else {
751 style.autocomplete.item
752 };
753
754 Text::new(action.lsp_action.title.clone(), style.text.clone())
755 .with_soft_wrap(false)
756 .contained()
757 .with_style(item_style)
758 .boxed()
759 })
760 .with_cursor_style(CursorStyle::PointingHand)
761 .on_mouse_down(move |cx| {
762 cx.dispatch_action(ConfirmCodeAction(Some(item_ix)));
763 })
764 .boxed(),
765 );
766 }
767 })
768 .with_width_from_item(
769 self.actions
770 .iter()
771 .enumerate()
772 .max_by_key(|(_, action)| action.lsp_action.title.chars().count())
773 .map(|(ix, _)| ix),
774 )
775 .contained()
776 .with_style(container_style)
777 .boxed();
778
779 if self.deployed_from_indicator {
780 *cursor_position.column_mut() = 0;
781 }
782
783 (cursor_position, element)
784 }
785}
786
787#[derive(Debug)]
788struct ActiveDiagnosticGroup {
789 primary_range: Range<Anchor>,
790 primary_message: String,
791 blocks: HashMap<BlockId, Diagnostic>,
792 is_valid: bool,
793}
794
795#[derive(Serialize, Deserialize)]
796struct ClipboardSelection {
797 len: usize,
798 is_entire_line: bool,
799}
800
801pub struct NavigationData {
802 anchor: Anchor,
803 offset: usize,
804}
805
806impl Editor {
807 pub fn single_line(
808 field_editor_style: Option<GetFieldEditorTheme>,
809 cx: &mut ViewContext<Self>,
810 ) -> Self {
811 let buffer = cx.add_model(|cx| Buffer::new(0, String::new(), cx));
812 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
813 Self::new(EditorMode::SingleLine, buffer, None, field_editor_style, cx)
814 }
815
816 pub fn auto_height(
817 max_lines: usize,
818 field_editor_style: Option<GetFieldEditorTheme>,
819 cx: &mut ViewContext<Self>,
820 ) -> Self {
821 let buffer = cx.add_model(|cx| Buffer::new(0, String::new(), cx));
822 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
823 Self::new(
824 EditorMode::AutoHeight { max_lines },
825 buffer,
826 None,
827 field_editor_style,
828 cx,
829 )
830 }
831
832 pub fn for_buffer(
833 buffer: ModelHandle<Buffer>,
834 project: Option<ModelHandle<Project>>,
835 cx: &mut ViewContext<Self>,
836 ) -> Self {
837 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
838 Self::new(EditorMode::Full, buffer, project, None, cx)
839 }
840
841 pub fn for_multibuffer(
842 buffer: ModelHandle<MultiBuffer>,
843 project: Option<ModelHandle<Project>>,
844 cx: &mut ViewContext<Self>,
845 ) -> Self {
846 Self::new(EditorMode::Full, buffer, project, None, cx)
847 }
848
849 pub fn clone(&self, cx: &mut ViewContext<Self>) -> Self {
850 let mut clone = Self::new(
851 self.mode,
852 self.buffer.clone(),
853 self.project.clone(),
854 self.get_field_editor_theme,
855 cx,
856 );
857 clone.scroll_position = self.scroll_position;
858 clone.scroll_top_anchor = self.scroll_top_anchor.clone();
859 clone.searchable = self.searchable;
860 clone
861 }
862
863 fn new(
864 mode: EditorMode,
865 buffer: ModelHandle<MultiBuffer>,
866 project: Option<ModelHandle<Project>>,
867 get_field_editor_theme: Option<GetFieldEditorTheme>,
868 cx: &mut ViewContext<Self>,
869 ) -> Self {
870 let display_map = cx.add_model(|cx| {
871 let settings = cx.global::<Settings>();
872 let style = build_style(&*settings, get_field_editor_theme, None, cx);
873 DisplayMap::new(
874 buffer.clone(),
875 settings.tab_size,
876 style.text.font_id,
877 style.text.font_size,
878 None,
879 2,
880 1,
881 cx,
882 )
883 });
884 cx.observe(&buffer, Self::on_buffer_changed).detach();
885 cx.subscribe(&buffer, Self::on_buffer_event).detach();
886 cx.observe(&display_map, Self::on_display_map_changed)
887 .detach();
888
889 let mut this = Self {
890 handle: cx.weak_handle(),
891 buffer,
892 display_map,
893 selections: Arc::from([]),
894 pending_selection: Some(PendingSelection {
895 selection: Selection {
896 id: 0,
897 start: Anchor::min(),
898 end: Anchor::min(),
899 reversed: false,
900 goal: SelectionGoal::None,
901 },
902 mode: SelectMode::Character,
903 }),
904 columnar_selection_tail: None,
905 next_selection_id: 1,
906 add_selections_state: None,
907 select_next_state: None,
908 selection_history: Default::default(),
909 autoclose_stack: Default::default(),
910 snippet_stack: Default::default(),
911 select_larger_syntax_node_stack: Vec::new(),
912 active_diagnostics: None,
913 soft_wrap_mode_override: None,
914 get_field_editor_theme,
915 project,
916 scroll_position: Vector2F::zero(),
917 scroll_top_anchor: None,
918 autoscroll_request: None,
919 focused: false,
920 show_local_cursors: false,
921 show_local_selections: true,
922 blink_epoch: 0,
923 blinking_paused: false,
924 mode,
925 vertical_scroll_margin: 3.0,
926 placeholder_text: None,
927 highlighted_rows: None,
928 background_highlights: Default::default(),
929 nav_history: None,
930 context_menu: None,
931 completion_tasks: Default::default(),
932 next_completion_id: 0,
933 available_code_actions: Default::default(),
934 code_actions_task: Default::default(),
935 document_highlights_task: Default::default(),
936 pending_rename: Default::default(),
937 searchable: true,
938 override_text_style: None,
939 cursor_shape: Default::default(),
940 };
941 this.end_selection(cx);
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 let map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1019
1020 if scroll_position.y() == 0. {
1021 self.scroll_top_anchor = None;
1022 self.scroll_position = scroll_position;
1023 } else {
1024 let scroll_top_buffer_offset =
1025 DisplayPoint::new(scroll_position.y() as u32, 0).to_offset(&map, Bias::Right);
1026 let anchor = map
1027 .buffer_snapshot
1028 .anchor_at(scroll_top_buffer_offset, Bias::Right);
1029 self.scroll_position = vec2f(
1030 scroll_position.x(),
1031 scroll_position.y() - anchor.to_display_point(&map).row() as f32,
1032 );
1033 self.scroll_top_anchor = Some(anchor);
1034 }
1035
1036 cx.emit(Event::ScrollPositionChanged);
1037 cx.notify();
1038 }
1039
1040 fn set_scroll_top_anchor(&mut self, anchor: Anchor, cx: &mut ViewContext<Self>) {
1041 self.scroll_position = Vector2F::zero();
1042 self.scroll_top_anchor = Some(anchor);
1043 cx.emit(Event::ScrollPositionChanged);
1044 cx.notify();
1045 }
1046
1047 pub fn set_cursor_shape(&mut self, cursor_shape: CursorShape, cx: &mut ViewContext<Self>) {
1048 self.cursor_shape = cursor_shape;
1049 cx.notify();
1050 }
1051
1052 pub fn scroll_position(&self, cx: &mut ViewContext<Self>) -> Vector2F {
1053 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1054 compute_scroll_position(&display_map, self.scroll_position, &self.scroll_top_anchor)
1055 }
1056
1057 pub fn clamp_scroll_left(&mut self, max: f32) -> bool {
1058 if max < self.scroll_position.x() {
1059 self.scroll_position.set_x(max);
1060 true
1061 } else {
1062 false
1063 }
1064 }
1065
1066 pub fn autoscroll_vertically(
1067 &mut self,
1068 viewport_height: f32,
1069 line_height: f32,
1070 cx: &mut ViewContext<Self>,
1071 ) -> bool {
1072 let visible_lines = viewport_height / line_height;
1073 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1074 let mut scroll_position =
1075 compute_scroll_position(&display_map, self.scroll_position, &self.scroll_top_anchor);
1076 let max_scroll_top = if matches!(self.mode, EditorMode::AutoHeight { .. }) {
1077 (display_map.max_point().row() as f32 - visible_lines + 1.).max(0.)
1078 } else {
1079 display_map.max_point().row().saturating_sub(1) as f32
1080 };
1081 if scroll_position.y() > max_scroll_top {
1082 scroll_position.set_y(max_scroll_top);
1083 self.set_scroll_position(scroll_position, cx);
1084 }
1085
1086 let autoscroll = if let Some(autoscroll) = self.autoscroll_request.take() {
1087 autoscroll
1088 } else {
1089 return false;
1090 };
1091
1092 let first_cursor_top;
1093 let last_cursor_bottom;
1094 if let Some(highlighted_rows) = &self.highlighted_rows {
1095 first_cursor_top = highlighted_rows.start as f32;
1096 last_cursor_bottom = first_cursor_top + 1.;
1097 } else if autoscroll == Autoscroll::Newest {
1098 let newest_selection =
1099 self.newest_selection_with_snapshot::<Point>(&display_map.buffer_snapshot);
1100 first_cursor_top = newest_selection.head().to_display_point(&display_map).row() as f32;
1101 last_cursor_bottom = first_cursor_top + 1.;
1102 } else {
1103 let selections = self.local_selections::<Point>(cx);
1104 first_cursor_top = selections
1105 .first()
1106 .unwrap()
1107 .head()
1108 .to_display_point(&display_map)
1109 .row() as f32;
1110 last_cursor_bottom = selections
1111 .last()
1112 .unwrap()
1113 .head()
1114 .to_display_point(&display_map)
1115 .row() as f32
1116 + 1.0;
1117 }
1118
1119 let margin = if matches!(self.mode, EditorMode::AutoHeight { .. }) {
1120 0.
1121 } else {
1122 ((visible_lines - (last_cursor_bottom - first_cursor_top)) / 2.0).floor()
1123 };
1124 if margin < 0.0 {
1125 return false;
1126 }
1127
1128 match autoscroll {
1129 Autoscroll::Fit | Autoscroll::Newest => {
1130 let margin = margin.min(self.vertical_scroll_margin);
1131 let target_top = (first_cursor_top - margin).max(0.0);
1132 let target_bottom = last_cursor_bottom + margin;
1133 let start_row = scroll_position.y();
1134 let end_row = start_row + visible_lines;
1135
1136 if target_top < start_row {
1137 scroll_position.set_y(target_top);
1138 self.set_scroll_position(scroll_position, cx);
1139 } else if target_bottom >= end_row {
1140 scroll_position.set_y(target_bottom - visible_lines);
1141 self.set_scroll_position(scroll_position, cx);
1142 }
1143 }
1144 Autoscroll::Center => {
1145 scroll_position.set_y((first_cursor_top - margin).max(0.0));
1146 self.set_scroll_position(scroll_position, cx);
1147 }
1148 }
1149
1150 true
1151 }
1152
1153 pub fn autoscroll_horizontally(
1154 &mut self,
1155 start_row: u32,
1156 viewport_width: f32,
1157 scroll_width: f32,
1158 max_glyph_width: f32,
1159 layouts: &[text_layout::Line],
1160 cx: &mut ViewContext<Self>,
1161 ) -> bool {
1162 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1163 let selections = self.local_selections::<Point>(cx);
1164
1165 let mut target_left;
1166 let mut target_right;
1167
1168 if self.highlighted_rows.is_some() {
1169 target_left = 0.0_f32;
1170 target_right = 0.0_f32;
1171 } else {
1172 target_left = std::f32::INFINITY;
1173 target_right = 0.0_f32;
1174 for selection in selections {
1175 let head = selection.head().to_display_point(&display_map);
1176 if head.row() >= start_row && head.row() < start_row + layouts.len() as u32 {
1177 let start_column = head.column().saturating_sub(3);
1178 let end_column = cmp::min(display_map.line_len(head.row()), head.column() + 3);
1179 target_left = target_left.min(
1180 layouts[(head.row() - start_row) as usize]
1181 .x_for_index(start_column as usize),
1182 );
1183 target_right = target_right.max(
1184 layouts[(head.row() - start_row) as usize].x_for_index(end_column as usize)
1185 + max_glyph_width,
1186 );
1187 }
1188 }
1189 }
1190
1191 target_right = target_right.min(scroll_width);
1192
1193 if target_right - target_left > viewport_width {
1194 return false;
1195 }
1196
1197 let scroll_left = self.scroll_position.x() * max_glyph_width;
1198 let scroll_right = scroll_left + viewport_width;
1199
1200 if target_left < scroll_left {
1201 self.scroll_position.set_x(target_left / max_glyph_width);
1202 true
1203 } else if target_right > scroll_right {
1204 self.scroll_position
1205 .set_x((target_right - viewport_width) / max_glyph_width);
1206 true
1207 } else {
1208 false
1209 }
1210 }
1211
1212 fn select(&mut self, Select(phase): &Select, cx: &mut ViewContext<Self>) {
1213 self.hide_context_menu(cx);
1214
1215 match phase {
1216 SelectPhase::Begin {
1217 position,
1218 add,
1219 click_count,
1220 } => self.begin_selection(*position, *add, *click_count, cx),
1221 SelectPhase::BeginColumnar {
1222 position,
1223 overshoot,
1224 } => self.begin_columnar_selection(*position, *overshoot, cx),
1225 SelectPhase::Extend {
1226 position,
1227 click_count,
1228 } => self.extend_selection(*position, *click_count, cx),
1229 SelectPhase::Update {
1230 position,
1231 overshoot,
1232 scroll_position,
1233 } => self.update_selection(*position, *overshoot, *scroll_position, cx),
1234 SelectPhase::End => self.end_selection(cx),
1235 }
1236 }
1237
1238 fn extend_selection(
1239 &mut self,
1240 position: DisplayPoint,
1241 click_count: usize,
1242 cx: &mut ViewContext<Self>,
1243 ) {
1244 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1245 let tail = self
1246 .newest_selection_with_snapshot::<usize>(&display_map.buffer_snapshot)
1247 .tail();
1248 self.begin_selection(position, false, click_count, cx);
1249
1250 let position = position.to_offset(&display_map, Bias::Left);
1251 let tail_anchor = display_map.buffer_snapshot.anchor_before(tail);
1252 let mut pending = self.pending_selection.clone().unwrap();
1253
1254 if position >= tail {
1255 pending.selection.start = tail_anchor.clone();
1256 } else {
1257 pending.selection.end = tail_anchor.clone();
1258 pending.selection.reversed = true;
1259 }
1260
1261 match &mut pending.mode {
1262 SelectMode::Word(range) | SelectMode::Line(range) => {
1263 *range = tail_anchor.clone()..tail_anchor
1264 }
1265 _ => {}
1266 }
1267
1268 self.set_selections(self.selections.clone(), Some(pending), cx);
1269 }
1270
1271 fn begin_selection(
1272 &mut self,
1273 position: DisplayPoint,
1274 add: bool,
1275 click_count: usize,
1276 cx: &mut ViewContext<Self>,
1277 ) {
1278 if !self.focused {
1279 cx.focus_self();
1280 cx.emit(Event::Activate);
1281 }
1282
1283 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1284 let buffer = &display_map.buffer_snapshot;
1285 let newest_selection = self.newest_anchor_selection().clone();
1286
1287 let start;
1288 let end;
1289 let mode;
1290 match click_count {
1291 1 => {
1292 start = buffer.anchor_before(position.to_point(&display_map));
1293 end = start.clone();
1294 mode = SelectMode::Character;
1295 }
1296 2 => {
1297 let range = movement::surrounding_word(&display_map, position);
1298 start = buffer.anchor_before(range.start.to_point(&display_map));
1299 end = buffer.anchor_before(range.end.to_point(&display_map));
1300 mode = SelectMode::Word(start.clone()..end.clone());
1301 }
1302 3 => {
1303 let position = display_map
1304 .clip_point(position, Bias::Left)
1305 .to_point(&display_map);
1306 let line_start = display_map.prev_line_boundary(position).0;
1307 let next_line_start = buffer.clip_point(
1308 display_map.next_line_boundary(position).0 + Point::new(1, 0),
1309 Bias::Left,
1310 );
1311 start = buffer.anchor_before(line_start);
1312 end = buffer.anchor_before(next_line_start);
1313 mode = SelectMode::Line(start.clone()..end.clone());
1314 }
1315 _ => {
1316 start = buffer.anchor_before(0);
1317 end = buffer.anchor_before(buffer.len());
1318 mode = SelectMode::All;
1319 }
1320 }
1321
1322 self.push_to_nav_history(newest_selection.head(), Some(end.to_point(&buffer)), cx);
1323
1324 let selection = Selection {
1325 id: post_inc(&mut self.next_selection_id),
1326 start,
1327 end,
1328 reversed: false,
1329 goal: SelectionGoal::None,
1330 };
1331
1332 let mut selections;
1333 if add {
1334 selections = self.selections.clone();
1335 // Remove the newest selection if it was added due to a previous mouse up
1336 // within this multi-click.
1337 if click_count > 1 {
1338 selections = self
1339 .selections
1340 .iter()
1341 .filter(|selection| selection.id != newest_selection.id)
1342 .cloned()
1343 .collect();
1344 }
1345 } else {
1346 selections = Arc::from([]);
1347 }
1348 self.set_selections(selections, Some(PendingSelection { selection, mode }), cx);
1349
1350 cx.notify();
1351 }
1352
1353 fn begin_columnar_selection(
1354 &mut self,
1355 position: DisplayPoint,
1356 overshoot: u32,
1357 cx: &mut ViewContext<Self>,
1358 ) {
1359 if !self.focused {
1360 cx.focus_self();
1361 cx.emit(Event::Activate);
1362 }
1363
1364 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1365 let tail = self
1366 .newest_selection_with_snapshot::<Point>(&display_map.buffer_snapshot)
1367 .tail();
1368 self.columnar_selection_tail = Some(display_map.buffer_snapshot.anchor_before(tail));
1369
1370 self.select_columns(
1371 tail.to_display_point(&display_map),
1372 position,
1373 overshoot,
1374 &display_map,
1375 cx,
1376 );
1377 }
1378
1379 fn update_selection(
1380 &mut self,
1381 position: DisplayPoint,
1382 overshoot: u32,
1383 scroll_position: Vector2F,
1384 cx: &mut ViewContext<Self>,
1385 ) {
1386 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1387
1388 if let Some(tail) = self.columnar_selection_tail.as_ref() {
1389 let tail = tail.to_display_point(&display_map);
1390 self.select_columns(tail, position, overshoot, &display_map, cx);
1391 } else if let Some(mut pending) = self.pending_selection.clone() {
1392 let buffer = self.buffer.read(cx).snapshot(cx);
1393 let head;
1394 let tail;
1395 match &pending.mode {
1396 SelectMode::Character => {
1397 head = position.to_point(&display_map);
1398 tail = pending.selection.tail().to_point(&buffer);
1399 }
1400 SelectMode::Word(original_range) => {
1401 let original_display_range = original_range.start.to_display_point(&display_map)
1402 ..original_range.end.to_display_point(&display_map);
1403 let original_buffer_range = original_display_range.start.to_point(&display_map)
1404 ..original_display_range.end.to_point(&display_map);
1405 if movement::is_inside_word(&display_map, position)
1406 || original_display_range.contains(&position)
1407 {
1408 let word_range = movement::surrounding_word(&display_map, position);
1409 if word_range.start < original_display_range.start {
1410 head = word_range.start.to_point(&display_map);
1411 } else {
1412 head = word_range.end.to_point(&display_map);
1413 }
1414 } else {
1415 head = position.to_point(&display_map);
1416 }
1417
1418 if head <= original_buffer_range.start {
1419 tail = original_buffer_range.end;
1420 } else {
1421 tail = original_buffer_range.start;
1422 }
1423 }
1424 SelectMode::Line(original_range) => {
1425 let original_range = original_range.to_point(&display_map.buffer_snapshot);
1426
1427 let position = display_map
1428 .clip_point(position, Bias::Left)
1429 .to_point(&display_map);
1430 let line_start = display_map.prev_line_boundary(position).0;
1431 let next_line_start = buffer.clip_point(
1432 display_map.next_line_boundary(position).0 + Point::new(1, 0),
1433 Bias::Left,
1434 );
1435
1436 if line_start < original_range.start {
1437 head = line_start
1438 } else {
1439 head = next_line_start
1440 }
1441
1442 if head <= original_range.start {
1443 tail = original_range.end;
1444 } else {
1445 tail = original_range.start;
1446 }
1447 }
1448 SelectMode::All => {
1449 return;
1450 }
1451 };
1452
1453 if head < tail {
1454 pending.selection.start = buffer.anchor_before(head);
1455 pending.selection.end = buffer.anchor_before(tail);
1456 pending.selection.reversed = true;
1457 } else {
1458 pending.selection.start = buffer.anchor_before(tail);
1459 pending.selection.end = buffer.anchor_before(head);
1460 pending.selection.reversed = false;
1461 }
1462 self.set_selections(self.selections.clone(), Some(pending), cx);
1463 } else {
1464 log::error!("update_selection dispatched with no pending selection");
1465 return;
1466 }
1467
1468 self.set_scroll_position(scroll_position, cx);
1469 cx.notify();
1470 }
1471
1472 fn end_selection(&mut self, cx: &mut ViewContext<Self>) {
1473 self.columnar_selection_tail.take();
1474 if self.pending_selection.is_some() {
1475 let selections = self.local_selections::<usize>(cx);
1476 self.update_selections(selections, None, cx);
1477 }
1478 }
1479
1480 fn select_columns(
1481 &mut self,
1482 tail: DisplayPoint,
1483 head: DisplayPoint,
1484 overshoot: u32,
1485 display_map: &DisplaySnapshot,
1486 cx: &mut ViewContext<Self>,
1487 ) {
1488 let start_row = cmp::min(tail.row(), head.row());
1489 let end_row = cmp::max(tail.row(), head.row());
1490 let start_column = cmp::min(tail.column(), head.column() + overshoot);
1491 let end_column = cmp::max(tail.column(), head.column() + overshoot);
1492 let reversed = start_column < tail.column();
1493
1494 let selections = (start_row..=end_row)
1495 .filter_map(|row| {
1496 if start_column <= display_map.line_len(row) && !display_map.is_block_line(row) {
1497 let start = display_map
1498 .clip_point(DisplayPoint::new(row, start_column), Bias::Left)
1499 .to_point(&display_map);
1500 let end = display_map
1501 .clip_point(DisplayPoint::new(row, end_column), Bias::Right)
1502 .to_point(&display_map);
1503 Some(Selection {
1504 id: post_inc(&mut self.next_selection_id),
1505 start,
1506 end,
1507 reversed,
1508 goal: SelectionGoal::None,
1509 })
1510 } else {
1511 None
1512 }
1513 })
1514 .collect::<Vec<_>>();
1515
1516 self.update_selections(selections, None, cx);
1517 cx.notify();
1518 }
1519
1520 pub fn is_selecting(&self) -> bool {
1521 self.pending_selection.is_some() || self.columnar_selection_tail.is_some()
1522 }
1523
1524 pub fn cancel(&mut self, _: &Cancel, cx: &mut ViewContext<Self>) {
1525 if self.take_rename(false, cx).is_some() {
1526 return;
1527 }
1528
1529 if self.hide_context_menu(cx).is_some() {
1530 return;
1531 }
1532
1533 if self.snippet_stack.pop().is_some() {
1534 return;
1535 }
1536
1537 if self.mode != EditorMode::Full {
1538 cx.propagate_action();
1539 return;
1540 }
1541
1542 if self.active_diagnostics.is_some() {
1543 self.dismiss_diagnostics(cx);
1544 } else if let Some(pending) = self.pending_selection.clone() {
1545 let mut selections = self.selections.clone();
1546 if selections.is_empty() {
1547 selections = Arc::from([pending.selection]);
1548 }
1549 self.set_selections(selections, None, cx);
1550 self.request_autoscroll(Autoscroll::Fit, cx);
1551 } else {
1552 let mut oldest_selection = self.oldest_selection::<usize>(&cx);
1553 if self.selection_count() == 1 {
1554 if oldest_selection.is_empty() {
1555 cx.propagate_action();
1556 return;
1557 }
1558
1559 oldest_selection.start = oldest_selection.head().clone();
1560 oldest_selection.end = oldest_selection.head().clone();
1561 }
1562 self.update_selections(vec![oldest_selection], Some(Autoscroll::Fit), cx);
1563 }
1564 }
1565
1566 #[cfg(any(test, feature = "test-support"))]
1567 pub fn selected_ranges<D: TextDimension + Ord + Sub<D, Output = D>>(
1568 &self,
1569 cx: &mut MutableAppContext,
1570 ) -> Vec<Range<D>> {
1571 self.local_selections::<D>(cx)
1572 .iter()
1573 .map(|s| {
1574 if s.reversed {
1575 s.end.clone()..s.start.clone()
1576 } else {
1577 s.start.clone()..s.end.clone()
1578 }
1579 })
1580 .collect()
1581 }
1582
1583 #[cfg(any(test, feature = "test-support"))]
1584 pub fn selected_display_ranges(&self, cx: &mut MutableAppContext) -> Vec<Range<DisplayPoint>> {
1585 let display_map = self
1586 .display_map
1587 .update(cx, |display_map, cx| display_map.snapshot(cx));
1588 self.selections
1589 .iter()
1590 .chain(
1591 self.pending_selection
1592 .as_ref()
1593 .map(|pending| &pending.selection),
1594 )
1595 .map(|s| {
1596 if s.reversed {
1597 s.end.to_display_point(&display_map)..s.start.to_display_point(&display_map)
1598 } else {
1599 s.start.to_display_point(&display_map)..s.end.to_display_point(&display_map)
1600 }
1601 })
1602 .collect()
1603 }
1604
1605 pub fn select_ranges<I, T>(
1606 &mut self,
1607 ranges: I,
1608 autoscroll: Option<Autoscroll>,
1609 cx: &mut ViewContext<Self>,
1610 ) where
1611 I: IntoIterator<Item = Range<T>>,
1612 T: ToOffset,
1613 {
1614 let buffer = self.buffer.read(cx).snapshot(cx);
1615 let selections = ranges
1616 .into_iter()
1617 .map(|range| {
1618 let mut start = range.start.to_offset(&buffer);
1619 let mut end = range.end.to_offset(&buffer);
1620 let reversed = if start > end {
1621 mem::swap(&mut start, &mut end);
1622 true
1623 } else {
1624 false
1625 };
1626 Selection {
1627 id: post_inc(&mut self.next_selection_id),
1628 start,
1629 end,
1630 reversed,
1631 goal: SelectionGoal::None,
1632 }
1633 })
1634 .collect::<Vec<_>>();
1635 self.update_selections(selections, autoscroll, cx);
1636 }
1637
1638 #[cfg(any(test, feature = "test-support"))]
1639 pub fn select_display_ranges<'a, T>(&mut self, ranges: T, cx: &mut ViewContext<Self>)
1640 where
1641 T: IntoIterator<Item = &'a Range<DisplayPoint>>,
1642 {
1643 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1644 let selections = ranges
1645 .into_iter()
1646 .map(|range| {
1647 let mut start = range.start;
1648 let mut end = range.end;
1649 let reversed = if start > end {
1650 mem::swap(&mut start, &mut end);
1651 true
1652 } else {
1653 false
1654 };
1655 Selection {
1656 id: post_inc(&mut self.next_selection_id),
1657 start: start.to_point(&display_map),
1658 end: end.to_point(&display_map),
1659 reversed,
1660 goal: SelectionGoal::None,
1661 }
1662 })
1663 .collect();
1664 self.update_selections(selections, None, cx);
1665 }
1666
1667 pub fn handle_input(&mut self, action: &Input, cx: &mut ViewContext<Self>) {
1668 let text = action.0.as_ref();
1669 if !self.skip_autoclose_end(text, cx) {
1670 self.start_transaction(cx);
1671 if !self.surround_with_bracket_pair(text, cx) {
1672 self.insert(text, cx);
1673 self.autoclose_bracket_pairs(cx);
1674 }
1675 self.end_transaction(cx);
1676 self.trigger_completion_on_input(text, cx);
1677 }
1678 }
1679
1680 pub fn newline(&mut self, _: &Newline, cx: &mut ViewContext<Self>) {
1681 self.start_transaction(cx);
1682 let mut old_selections = SmallVec::<[_; 32]>::new();
1683 {
1684 let selections = self.local_selections::<usize>(cx);
1685 let buffer = self.buffer.read(cx).snapshot(cx);
1686 for selection in selections.iter() {
1687 let start_point = selection.start.to_point(&buffer);
1688 let indent = buffer
1689 .indent_column_for_line(start_point.row)
1690 .min(start_point.column);
1691 let start = selection.start;
1692 let end = selection.end;
1693
1694 let mut insert_extra_newline = false;
1695 if let Some(language) = buffer.language() {
1696 let leading_whitespace_len = buffer
1697 .reversed_chars_at(start)
1698 .take_while(|c| c.is_whitespace() && *c != '\n')
1699 .map(|c| c.len_utf8())
1700 .sum::<usize>();
1701
1702 let trailing_whitespace_len = buffer
1703 .chars_at(end)
1704 .take_while(|c| c.is_whitespace() && *c != '\n')
1705 .map(|c| c.len_utf8())
1706 .sum::<usize>();
1707
1708 insert_extra_newline = language.brackets().iter().any(|pair| {
1709 let pair_start = pair.start.trim_end();
1710 let pair_end = pair.end.trim_start();
1711
1712 pair.newline
1713 && buffer.contains_str_at(end + trailing_whitespace_len, pair_end)
1714 && buffer.contains_str_at(
1715 (start - leading_whitespace_len).saturating_sub(pair_start.len()),
1716 pair_start,
1717 )
1718 });
1719 }
1720
1721 old_selections.push((
1722 selection.id,
1723 buffer.anchor_after(end),
1724 start..end,
1725 indent,
1726 insert_extra_newline,
1727 ));
1728 }
1729 }
1730
1731 self.buffer.update(cx, |buffer, cx| {
1732 let mut delta = 0_isize;
1733 let mut pending_edit: Option<PendingEdit> = None;
1734 for (_, _, range, indent, insert_extra_newline) in &old_selections {
1735 if pending_edit.as_ref().map_or(false, |pending| {
1736 pending.indent != *indent
1737 || pending.insert_extra_newline != *insert_extra_newline
1738 }) {
1739 let pending = pending_edit.take().unwrap();
1740 let mut new_text = String::with_capacity(1 + pending.indent as usize);
1741 new_text.push('\n');
1742 new_text.extend(iter::repeat(' ').take(pending.indent as usize));
1743 if pending.insert_extra_newline {
1744 new_text = new_text.repeat(2);
1745 }
1746 buffer.edit_with_autoindent(pending.ranges, new_text, cx);
1747 delta += pending.delta;
1748 }
1749
1750 let start = (range.start as isize + delta) as usize;
1751 let end = (range.end as isize + delta) as usize;
1752 let mut text_len = *indent as usize + 1;
1753 if *insert_extra_newline {
1754 text_len *= 2;
1755 }
1756
1757 let pending = pending_edit.get_or_insert_with(Default::default);
1758 pending.delta += text_len as isize - (end - start) as isize;
1759 pending.indent = *indent;
1760 pending.insert_extra_newline = *insert_extra_newline;
1761 pending.ranges.push(start..end);
1762 }
1763
1764 let pending = pending_edit.unwrap();
1765 let mut new_text = String::with_capacity(1 + pending.indent as usize);
1766 new_text.push('\n');
1767 new_text.extend(iter::repeat(' ').take(pending.indent as usize));
1768 if pending.insert_extra_newline {
1769 new_text = new_text.repeat(2);
1770 }
1771 buffer.edit_with_autoindent(pending.ranges, new_text, cx);
1772
1773 let buffer = buffer.read(cx);
1774 self.selections = self
1775 .selections
1776 .iter()
1777 .cloned()
1778 .zip(old_selections)
1779 .map(
1780 |(mut new_selection, (_, end_anchor, _, _, insert_extra_newline))| {
1781 let mut cursor = end_anchor.to_point(&buffer);
1782 if insert_extra_newline {
1783 cursor.row -= 1;
1784 cursor.column = buffer.line_len(cursor.row);
1785 }
1786 let anchor = buffer.anchor_after(cursor);
1787 new_selection.start = anchor.clone();
1788 new_selection.end = anchor;
1789 new_selection
1790 },
1791 )
1792 .collect();
1793 });
1794
1795 self.request_autoscroll(Autoscroll::Fit, cx);
1796 self.end_transaction(cx);
1797
1798 #[derive(Default)]
1799 struct PendingEdit {
1800 indent: u32,
1801 insert_extra_newline: bool,
1802 delta: isize,
1803 ranges: SmallVec<[Range<usize>; 32]>,
1804 }
1805 }
1806
1807 pub fn insert(&mut self, text: &str, cx: &mut ViewContext<Self>) {
1808 self.start_transaction(cx);
1809
1810 let old_selections = self.local_selections::<usize>(cx);
1811 let selection_anchors = self.buffer.update(cx, |buffer, cx| {
1812 let anchors = {
1813 let snapshot = buffer.read(cx);
1814 old_selections
1815 .iter()
1816 .map(|s| (s.id, s.goal, snapshot.anchor_after(s.end)))
1817 .collect::<Vec<_>>()
1818 };
1819 let edit_ranges = old_selections.iter().map(|s| s.start..s.end);
1820 buffer.edit_with_autoindent(edit_ranges, text, cx);
1821 anchors
1822 });
1823
1824 let selections = {
1825 let snapshot = self.buffer.read(cx).read(cx);
1826 selection_anchors
1827 .into_iter()
1828 .map(|(id, goal, position)| {
1829 let position = position.to_offset(&snapshot);
1830 Selection {
1831 id,
1832 start: position,
1833 end: position,
1834 goal,
1835 reversed: false,
1836 }
1837 })
1838 .collect()
1839 };
1840 self.update_selections(selections, Some(Autoscroll::Fit), cx);
1841 self.end_transaction(cx);
1842 }
1843
1844 fn trigger_completion_on_input(&mut self, text: &str, cx: &mut ViewContext<Self>) {
1845 let selection = self.newest_anchor_selection();
1846 if self
1847 .buffer
1848 .read(cx)
1849 .is_completion_trigger(selection.head(), text, cx)
1850 {
1851 self.show_completions(&ShowCompletions, cx);
1852 } else {
1853 self.hide_context_menu(cx);
1854 }
1855 }
1856
1857 fn surround_with_bracket_pair(&mut self, text: &str, cx: &mut ViewContext<Self>) -> bool {
1858 let snapshot = self.buffer.read(cx).snapshot(cx);
1859 if let Some(pair) = snapshot
1860 .language()
1861 .and_then(|language| language.brackets().iter().find(|b| b.start == text))
1862 .cloned()
1863 {
1864 if self
1865 .local_selections::<usize>(cx)
1866 .iter()
1867 .any(|selection| selection.is_empty())
1868 {
1869 false
1870 } else {
1871 let mut selections = self.selections.to_vec();
1872 for selection in &mut selections {
1873 selection.end = selection.end.bias_left(&snapshot);
1874 }
1875 drop(snapshot);
1876
1877 self.buffer.update(cx, |buffer, cx| {
1878 buffer.edit(
1879 selections.iter().map(|s| s.start.clone()..s.start.clone()),
1880 &pair.start,
1881 cx,
1882 );
1883 buffer.edit(
1884 selections.iter().map(|s| s.end.clone()..s.end.clone()),
1885 &pair.end,
1886 cx,
1887 );
1888 });
1889
1890 let snapshot = self.buffer.read(cx).read(cx);
1891 for selection in &mut selections {
1892 selection.end = selection.end.bias_right(&snapshot);
1893 }
1894 drop(snapshot);
1895
1896 self.set_selections(selections.into(), None, cx);
1897 true
1898 }
1899 } else {
1900 false
1901 }
1902 }
1903
1904 fn autoclose_bracket_pairs(&mut self, cx: &mut ViewContext<Self>) {
1905 let selections = self.local_selections::<usize>(cx);
1906 let mut bracket_pair_state = None;
1907 let mut new_selections = None;
1908 self.buffer.update(cx, |buffer, cx| {
1909 let mut snapshot = buffer.snapshot(cx);
1910 let left_biased_selections = selections
1911 .iter()
1912 .map(|selection| Selection {
1913 id: selection.id,
1914 start: snapshot.anchor_before(selection.start),
1915 end: snapshot.anchor_before(selection.end),
1916 reversed: selection.reversed,
1917 goal: selection.goal,
1918 })
1919 .collect::<Vec<_>>();
1920
1921 let autoclose_pair = snapshot.language().and_then(|language| {
1922 let first_selection_start = selections.first().unwrap().start;
1923 let pair = language.brackets().iter().find(|pair| {
1924 snapshot.contains_str_at(
1925 first_selection_start.saturating_sub(pair.start.len()),
1926 &pair.start,
1927 )
1928 });
1929 pair.and_then(|pair| {
1930 let should_autoclose = selections.iter().all(|selection| {
1931 // Ensure all selections are parked at the end of a pair start.
1932 if snapshot.contains_str_at(
1933 selection.start.saturating_sub(pair.start.len()),
1934 &pair.start,
1935 ) {
1936 snapshot
1937 .chars_at(selection.start)
1938 .next()
1939 .map_or(true, |c| language.should_autoclose_before(c))
1940 } else {
1941 false
1942 }
1943 });
1944
1945 if should_autoclose {
1946 Some(pair.clone())
1947 } else {
1948 None
1949 }
1950 })
1951 });
1952
1953 if let Some(pair) = autoclose_pair {
1954 let selection_ranges = selections
1955 .iter()
1956 .map(|selection| {
1957 let start = selection.start.to_offset(&snapshot);
1958 start..start
1959 })
1960 .collect::<SmallVec<[_; 32]>>();
1961
1962 buffer.edit(selection_ranges, &pair.end, cx);
1963 snapshot = buffer.snapshot(cx);
1964
1965 new_selections = Some(
1966 self.resolve_selections::<usize, _>(left_biased_selections.iter(), &snapshot)
1967 .collect::<Vec<_>>(),
1968 );
1969
1970 if pair.end.len() == 1 {
1971 let mut delta = 0;
1972 bracket_pair_state = Some(BracketPairState {
1973 ranges: selections
1974 .iter()
1975 .map(move |selection| {
1976 let offset = selection.start + delta;
1977 delta += 1;
1978 snapshot.anchor_before(offset)..snapshot.anchor_after(offset)
1979 })
1980 .collect(),
1981 pair,
1982 });
1983 }
1984 }
1985 });
1986
1987 if let Some(new_selections) = new_selections {
1988 self.update_selections(new_selections, None, cx);
1989 }
1990 if let Some(bracket_pair_state) = bracket_pair_state {
1991 self.autoclose_stack.push(bracket_pair_state);
1992 }
1993 }
1994
1995 fn skip_autoclose_end(&mut self, text: &str, cx: &mut ViewContext<Self>) -> bool {
1996 let old_selections = self.local_selections::<usize>(cx);
1997 let autoclose_pair = if let Some(autoclose_pair) = self.autoclose_stack.last() {
1998 autoclose_pair
1999 } else {
2000 return false;
2001 };
2002 if text != autoclose_pair.pair.end {
2003 return false;
2004 }
2005
2006 debug_assert_eq!(old_selections.len(), autoclose_pair.ranges.len());
2007
2008 let buffer = self.buffer.read(cx).snapshot(cx);
2009 if old_selections
2010 .iter()
2011 .zip(autoclose_pair.ranges.iter().map(|r| r.to_offset(&buffer)))
2012 .all(|(selection, autoclose_range)| {
2013 let autoclose_range_end = autoclose_range.end.to_offset(&buffer);
2014 selection.is_empty() && selection.start == autoclose_range_end
2015 })
2016 {
2017 let new_selections = old_selections
2018 .into_iter()
2019 .map(|selection| {
2020 let cursor = selection.start + 1;
2021 Selection {
2022 id: selection.id,
2023 start: cursor,
2024 end: cursor,
2025 reversed: false,
2026 goal: SelectionGoal::None,
2027 }
2028 })
2029 .collect();
2030 self.autoclose_stack.pop();
2031 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
2032 true
2033 } else {
2034 false
2035 }
2036 }
2037
2038 fn completion_query(buffer: &MultiBufferSnapshot, position: impl ToOffset) -> Option<String> {
2039 let offset = position.to_offset(buffer);
2040 let (word_range, kind) = buffer.surrounding_word(offset);
2041 if offset > word_range.start && kind == Some(CharKind::Word) {
2042 Some(
2043 buffer
2044 .text_for_range(word_range.start..offset)
2045 .collect::<String>(),
2046 )
2047 } else {
2048 None
2049 }
2050 }
2051
2052 fn show_completions(&mut self, _: &ShowCompletions, cx: &mut ViewContext<Self>) {
2053 if self.pending_rename.is_some() {
2054 return;
2055 }
2056
2057 let project = if let Some(project) = self.project.clone() {
2058 project
2059 } else {
2060 return;
2061 };
2062
2063 let position = self.newest_anchor_selection().head();
2064 let (buffer, buffer_position) = if let Some(output) = self
2065 .buffer
2066 .read(cx)
2067 .text_anchor_for_position(position.clone(), cx)
2068 {
2069 output
2070 } else {
2071 return;
2072 };
2073
2074 let query = Self::completion_query(&self.buffer.read(cx).read(cx), position.clone());
2075 let completions = project.update(cx, |project, cx| {
2076 project.completions(&buffer, buffer_position.clone(), cx)
2077 });
2078
2079 let id = post_inc(&mut self.next_completion_id);
2080 let task = cx.spawn_weak(|this, mut cx| {
2081 async move {
2082 let completions = completions.await?;
2083 if completions.is_empty() {
2084 return Ok(());
2085 }
2086
2087 let mut menu = CompletionsMenu {
2088 id,
2089 initial_position: position,
2090 match_candidates: completions
2091 .iter()
2092 .enumerate()
2093 .map(|(id, completion)| {
2094 StringMatchCandidate::new(
2095 id,
2096 completion.label.text[completion.label.filter_range.clone()].into(),
2097 )
2098 })
2099 .collect(),
2100 buffer,
2101 completions: completions.into(),
2102 matches: Vec::new().into(),
2103 selected_item: 0,
2104 list: Default::default(),
2105 };
2106
2107 menu.filter(query.as_deref(), cx.background()).await;
2108
2109 if let Some(this) = this.upgrade(&cx) {
2110 this.update(&mut cx, |this, cx| {
2111 match this.context_menu.as_ref() {
2112 None => {}
2113 Some(ContextMenu::Completions(prev_menu)) => {
2114 if prev_menu.id > menu.id {
2115 return;
2116 }
2117 }
2118 _ => return,
2119 }
2120
2121 this.completion_tasks.retain(|(id, _)| *id > menu.id);
2122 if this.focused {
2123 this.show_context_menu(ContextMenu::Completions(menu), cx);
2124 }
2125
2126 cx.notify();
2127 });
2128 }
2129 Ok::<_, anyhow::Error>(())
2130 }
2131 .log_err()
2132 });
2133 self.completion_tasks.push((id, task));
2134 }
2135
2136 pub fn confirm_completion(
2137 &mut self,
2138 ConfirmCompletion(completion_ix): &ConfirmCompletion,
2139 cx: &mut ViewContext<Self>,
2140 ) -> Option<Task<Result<()>>> {
2141 use language::ToOffset as _;
2142
2143 let completions_menu = if let ContextMenu::Completions(menu) = self.hide_context_menu(cx)? {
2144 menu
2145 } else {
2146 return None;
2147 };
2148
2149 let mat = completions_menu
2150 .matches
2151 .get(completion_ix.unwrap_or(completions_menu.selected_item))?;
2152 let buffer_handle = completions_menu.buffer;
2153 let completion = completions_menu.completions.get(mat.candidate_id)?;
2154
2155 let snippet;
2156 let text;
2157 if completion.is_snippet() {
2158 snippet = Some(Snippet::parse(&completion.new_text).log_err()?);
2159 text = snippet.as_ref().unwrap().text.clone();
2160 } else {
2161 snippet = None;
2162 text = completion.new_text.clone();
2163 };
2164 let buffer = buffer_handle.read(cx);
2165 let old_range = completion.old_range.to_offset(&buffer);
2166 let old_text = buffer.text_for_range(old_range.clone()).collect::<String>();
2167
2168 let selections = self.local_selections::<usize>(cx);
2169 let newest_selection = self.newest_anchor_selection();
2170 if newest_selection.start.buffer_id != Some(buffer_handle.id()) {
2171 return None;
2172 }
2173
2174 let lookbehind = newest_selection
2175 .start
2176 .text_anchor
2177 .to_offset(buffer)
2178 .saturating_sub(old_range.start);
2179 let lookahead = old_range
2180 .end
2181 .saturating_sub(newest_selection.end.text_anchor.to_offset(buffer));
2182 let mut common_prefix_len = old_text
2183 .bytes()
2184 .zip(text.bytes())
2185 .take_while(|(a, b)| a == b)
2186 .count();
2187
2188 let snapshot = self.buffer.read(cx).snapshot(cx);
2189 let mut ranges = Vec::new();
2190 for selection in &selections {
2191 if snapshot.contains_str_at(selection.start.saturating_sub(lookbehind), &old_text) {
2192 let start = selection.start.saturating_sub(lookbehind);
2193 let end = selection.end + lookahead;
2194 ranges.push(start + common_prefix_len..end);
2195 } else {
2196 common_prefix_len = 0;
2197 ranges.clear();
2198 ranges.extend(selections.iter().map(|s| {
2199 if s.id == newest_selection.id {
2200 old_range.clone()
2201 } else {
2202 s.start..s.end
2203 }
2204 }));
2205 break;
2206 }
2207 }
2208 let text = &text[common_prefix_len..];
2209
2210 self.start_transaction(cx);
2211 if let Some(mut snippet) = snippet {
2212 snippet.text = text.to_string();
2213 for tabstop in snippet.tabstops.iter_mut().flatten() {
2214 tabstop.start -= common_prefix_len as isize;
2215 tabstop.end -= common_prefix_len as isize;
2216 }
2217
2218 self.insert_snippet(&ranges, snippet, cx).log_err();
2219 } else {
2220 self.buffer.update(cx, |buffer, cx| {
2221 buffer.edit_with_autoindent(ranges, text, cx);
2222 });
2223 }
2224 self.end_transaction(cx);
2225
2226 let project = self.project.clone()?;
2227 let apply_edits = project.update(cx, |project, cx| {
2228 project.apply_additional_edits_for_completion(
2229 buffer_handle,
2230 completion.clone(),
2231 true,
2232 cx,
2233 )
2234 });
2235 Some(cx.foreground().spawn(async move {
2236 apply_edits.await?;
2237 Ok(())
2238 }))
2239 }
2240
2241 pub fn toggle_code_actions(
2242 &mut self,
2243 &ToggleCodeActions(deployed_from_indicator): &ToggleCodeActions,
2244 cx: &mut ViewContext<Self>,
2245 ) {
2246 if matches!(
2247 self.context_menu.as_ref(),
2248 Some(ContextMenu::CodeActions(_))
2249 ) {
2250 self.context_menu.take();
2251 cx.notify();
2252 return;
2253 }
2254
2255 let mut task = self.code_actions_task.take();
2256 cx.spawn_weak(|this, mut cx| async move {
2257 while let Some(prev_task) = task {
2258 prev_task.await;
2259 task = this
2260 .upgrade(&cx)
2261 .and_then(|this| this.update(&mut cx, |this, _| this.code_actions_task.take()));
2262 }
2263
2264 if let Some(this) = this.upgrade(&cx) {
2265 this.update(&mut cx, |this, cx| {
2266 if this.focused {
2267 if let Some((buffer, actions)) = this.available_code_actions.clone() {
2268 this.show_context_menu(
2269 ContextMenu::CodeActions(CodeActionsMenu {
2270 buffer,
2271 actions,
2272 selected_item: Default::default(),
2273 list: Default::default(),
2274 deployed_from_indicator,
2275 }),
2276 cx,
2277 );
2278 }
2279 }
2280 })
2281 }
2282 Ok::<_, anyhow::Error>(())
2283 })
2284 .detach_and_log_err(cx);
2285 }
2286
2287 pub fn confirm_code_action(
2288 workspace: &mut Workspace,
2289 ConfirmCodeAction(action_ix): &ConfirmCodeAction,
2290 cx: &mut ViewContext<Workspace>,
2291 ) -> Option<Task<Result<()>>> {
2292 let editor = workspace.active_item(cx)?.act_as::<Editor>(cx)?;
2293 let actions_menu = if let ContextMenu::CodeActions(menu) =
2294 editor.update(cx, |editor, cx| editor.hide_context_menu(cx))?
2295 {
2296 menu
2297 } else {
2298 return None;
2299 };
2300 let action_ix = action_ix.unwrap_or(actions_menu.selected_item);
2301 let action = actions_menu.actions.get(action_ix)?.clone();
2302 let title = action.lsp_action.title.clone();
2303 let buffer = actions_menu.buffer;
2304
2305 let apply_code_actions = workspace.project().clone().update(cx, |project, cx| {
2306 project.apply_code_action(buffer, action, true, cx)
2307 });
2308 Some(cx.spawn(|workspace, cx| async move {
2309 let project_transaction = apply_code_actions.await?;
2310 Self::open_project_transaction(editor, workspace, project_transaction, title, cx).await
2311 }))
2312 }
2313
2314 async fn open_project_transaction(
2315 this: ViewHandle<Editor>,
2316 workspace: ViewHandle<Workspace>,
2317 transaction: ProjectTransaction,
2318 title: String,
2319 mut cx: AsyncAppContext,
2320 ) -> Result<()> {
2321 let replica_id = this.read_with(&cx, |this, cx| this.replica_id(cx));
2322
2323 // If the code action's edits are all contained within this editor, then
2324 // avoid opening a new editor to display them.
2325 let mut entries = transaction.0.iter();
2326 if let Some((buffer, transaction)) = entries.next() {
2327 if entries.next().is_none() {
2328 let excerpt = this.read_with(&cx, |editor, cx| {
2329 editor
2330 .buffer()
2331 .read(cx)
2332 .excerpt_containing(editor.newest_anchor_selection().head(), cx)
2333 });
2334 if let Some((excerpted_buffer, excerpt_range)) = excerpt {
2335 if excerpted_buffer == *buffer {
2336 let snapshot = buffer.read_with(&cx, |buffer, _| buffer.snapshot());
2337 let excerpt_range = excerpt_range.to_offset(&snapshot);
2338 if snapshot
2339 .edited_ranges_for_transaction(transaction)
2340 .all(|range| {
2341 excerpt_range.start <= range.start && excerpt_range.end >= range.end
2342 })
2343 {
2344 return Ok(());
2345 }
2346 }
2347 }
2348 }
2349 }
2350
2351 let mut ranges_to_highlight = Vec::new();
2352 let excerpt_buffer = cx.add_model(|cx| {
2353 let mut multibuffer = MultiBuffer::new(replica_id).with_title(title);
2354 for (buffer, transaction) in &transaction.0 {
2355 let snapshot = buffer.read(cx).snapshot();
2356 ranges_to_highlight.extend(
2357 multibuffer.push_excerpts_with_context_lines(
2358 buffer.clone(),
2359 snapshot
2360 .edited_ranges_for_transaction::<usize>(transaction)
2361 .collect(),
2362 1,
2363 cx,
2364 ),
2365 );
2366 }
2367 multibuffer.push_transaction(&transaction.0);
2368 multibuffer
2369 });
2370
2371 workspace.update(&mut cx, |workspace, cx| {
2372 let project = workspace.project().clone();
2373 let editor =
2374 cx.add_view(|cx| Editor::for_multibuffer(excerpt_buffer, Some(project), cx));
2375 workspace.add_item(Box::new(editor.clone()), cx);
2376 editor.update(cx, |editor, cx| {
2377 let color = editor.style(cx).highlighted_line_background;
2378 editor.highlight_background::<Self>(ranges_to_highlight, color, cx);
2379 });
2380 });
2381
2382 Ok(())
2383 }
2384
2385 fn refresh_code_actions(&mut self, cx: &mut ViewContext<Self>) -> Option<()> {
2386 let project = self.project.as_ref()?;
2387 let buffer = self.buffer.read(cx);
2388 let newest_selection = self.newest_anchor_selection().clone();
2389 let (start_buffer, start) = buffer.text_anchor_for_position(newest_selection.start, cx)?;
2390 let (end_buffer, end) = buffer.text_anchor_for_position(newest_selection.end, cx)?;
2391 if start_buffer != end_buffer {
2392 return None;
2393 }
2394
2395 let actions = project.update(cx, |project, cx| {
2396 project.code_actions(&start_buffer, start..end, cx)
2397 });
2398 self.code_actions_task = Some(cx.spawn_weak(|this, mut cx| async move {
2399 let actions = actions.await;
2400 if let Some(this) = this.upgrade(&cx) {
2401 this.update(&mut cx, |this, cx| {
2402 this.available_code_actions = actions.log_err().and_then(|actions| {
2403 if actions.is_empty() {
2404 None
2405 } else {
2406 Some((start_buffer, actions.into()))
2407 }
2408 });
2409 cx.notify();
2410 })
2411 }
2412 }));
2413 None
2414 }
2415
2416 fn refresh_document_highlights(&mut self, cx: &mut ViewContext<Self>) -> Option<()> {
2417 if self.pending_rename.is_some() {
2418 return None;
2419 }
2420
2421 let project = self.project.as_ref()?;
2422 let buffer = self.buffer.read(cx);
2423 let newest_selection = self.newest_anchor_selection().clone();
2424 let cursor_position = newest_selection.head();
2425 let (cursor_buffer, cursor_buffer_position) =
2426 buffer.text_anchor_for_position(cursor_position.clone(), cx)?;
2427 let (tail_buffer, _) = buffer.text_anchor_for_position(newest_selection.tail(), cx)?;
2428 if cursor_buffer != tail_buffer {
2429 return None;
2430 }
2431
2432 let highlights = project.update(cx, |project, cx| {
2433 project.document_highlights(&cursor_buffer, cursor_buffer_position, cx)
2434 });
2435
2436 self.document_highlights_task = Some(cx.spawn_weak(|this, mut cx| async move {
2437 let highlights = highlights.log_err().await;
2438 if let Some((this, highlights)) = this.upgrade(&cx).zip(highlights) {
2439 this.update(&mut cx, |this, cx| {
2440 if this.pending_rename.is_some() {
2441 return;
2442 }
2443
2444 let buffer_id = cursor_position.buffer_id;
2445 let excerpt_id = cursor_position.excerpt_id.clone();
2446 let style = this.style(cx);
2447 let read_background = style.document_highlight_read_background;
2448 let write_background = style.document_highlight_write_background;
2449 let buffer = this.buffer.read(cx);
2450 if !buffer
2451 .text_anchor_for_position(cursor_position, cx)
2452 .map_or(false, |(buffer, _)| buffer == cursor_buffer)
2453 {
2454 return;
2455 }
2456
2457 let mut write_ranges = Vec::new();
2458 let mut read_ranges = Vec::new();
2459 for highlight in highlights {
2460 let range = Anchor {
2461 buffer_id,
2462 excerpt_id: excerpt_id.clone(),
2463 text_anchor: highlight.range.start,
2464 }..Anchor {
2465 buffer_id,
2466 excerpt_id: excerpt_id.clone(),
2467 text_anchor: highlight.range.end,
2468 };
2469 if highlight.kind == lsp::DocumentHighlightKind::WRITE {
2470 write_ranges.push(range);
2471 } else {
2472 read_ranges.push(range);
2473 }
2474 }
2475
2476 this.highlight_background::<DocumentHighlightRead>(
2477 read_ranges,
2478 read_background,
2479 cx,
2480 );
2481 this.highlight_background::<DocumentHighlightWrite>(
2482 write_ranges,
2483 write_background,
2484 cx,
2485 );
2486 cx.notify();
2487 });
2488 }
2489 }));
2490 None
2491 }
2492
2493 pub fn render_code_actions_indicator(
2494 &self,
2495 style: &EditorStyle,
2496 cx: &mut ViewContext<Self>,
2497 ) -> Option<ElementBox> {
2498 if self.available_code_actions.is_some() {
2499 enum Tag {}
2500 Some(
2501 MouseEventHandler::new::<Tag, _, _>(0, cx, |_, _| {
2502 Svg::new("icons/zap.svg")
2503 .with_color(style.code_actions_indicator)
2504 .boxed()
2505 })
2506 .with_cursor_style(CursorStyle::PointingHand)
2507 .with_padding(Padding::uniform(3.))
2508 .on_mouse_down(|cx| {
2509 cx.dispatch_action(ToggleCodeActions(true));
2510 })
2511 .boxed(),
2512 )
2513 } else {
2514 None
2515 }
2516 }
2517
2518 pub fn context_menu_visible(&self) -> bool {
2519 self.context_menu
2520 .as_ref()
2521 .map_or(false, |menu| menu.visible())
2522 }
2523
2524 pub fn render_context_menu(
2525 &self,
2526 cursor_position: DisplayPoint,
2527 style: EditorStyle,
2528 cx: &AppContext,
2529 ) -> Option<(DisplayPoint, ElementBox)> {
2530 self.context_menu
2531 .as_ref()
2532 .map(|menu| menu.render(cursor_position, style, cx))
2533 }
2534
2535 fn show_context_menu(&mut self, menu: ContextMenu, cx: &mut ViewContext<Self>) {
2536 if !matches!(menu, ContextMenu::Completions(_)) {
2537 self.completion_tasks.clear();
2538 }
2539 self.context_menu = Some(menu);
2540 cx.notify();
2541 }
2542
2543 fn hide_context_menu(&mut self, cx: &mut ViewContext<Self>) -> Option<ContextMenu> {
2544 cx.notify();
2545 self.completion_tasks.clear();
2546 self.context_menu.take()
2547 }
2548
2549 pub fn insert_snippet(
2550 &mut self,
2551 insertion_ranges: &[Range<usize>],
2552 snippet: Snippet,
2553 cx: &mut ViewContext<Self>,
2554 ) -> Result<()> {
2555 let tabstops = self.buffer.update(cx, |buffer, cx| {
2556 buffer.edit_with_autoindent(insertion_ranges.iter().cloned(), &snippet.text, cx);
2557
2558 let snapshot = &*buffer.read(cx);
2559 let snippet = &snippet;
2560 snippet
2561 .tabstops
2562 .iter()
2563 .map(|tabstop| {
2564 let mut tabstop_ranges = tabstop
2565 .iter()
2566 .flat_map(|tabstop_range| {
2567 let mut delta = 0 as isize;
2568 insertion_ranges.iter().map(move |insertion_range| {
2569 let insertion_start = insertion_range.start as isize + delta;
2570 delta +=
2571 snippet.text.len() as isize - insertion_range.len() as isize;
2572
2573 let start = snapshot.anchor_before(
2574 (insertion_start + tabstop_range.start) as usize,
2575 );
2576 let end = snapshot
2577 .anchor_after((insertion_start + tabstop_range.end) as usize);
2578 start..end
2579 })
2580 })
2581 .collect::<Vec<_>>();
2582 tabstop_ranges
2583 .sort_unstable_by(|a, b| a.start.cmp(&b.start, snapshot).unwrap());
2584 tabstop_ranges
2585 })
2586 .collect::<Vec<_>>()
2587 });
2588
2589 if let Some(tabstop) = tabstops.first() {
2590 self.select_ranges(tabstop.iter().cloned(), Some(Autoscroll::Fit), cx);
2591 self.snippet_stack.push(SnippetState {
2592 active_index: 0,
2593 ranges: tabstops,
2594 });
2595 }
2596
2597 Ok(())
2598 }
2599
2600 pub fn move_to_next_snippet_tabstop(&mut self, cx: &mut ViewContext<Self>) -> bool {
2601 self.move_to_snippet_tabstop(Bias::Right, cx)
2602 }
2603
2604 pub fn move_to_prev_snippet_tabstop(&mut self, cx: &mut ViewContext<Self>) {
2605 self.move_to_snippet_tabstop(Bias::Left, cx);
2606 }
2607
2608 pub fn move_to_snippet_tabstop(&mut self, bias: Bias, cx: &mut ViewContext<Self>) -> bool {
2609 let buffer = self.buffer.read(cx).snapshot(cx);
2610
2611 if let Some(snippet) = self.snippet_stack.last_mut() {
2612 match bias {
2613 Bias::Left => {
2614 if snippet.active_index > 0 {
2615 snippet.active_index -= 1;
2616 } else {
2617 return false;
2618 }
2619 }
2620 Bias::Right => {
2621 if snippet.active_index + 1 < snippet.ranges.len() {
2622 snippet.active_index += 1;
2623 } else {
2624 return false;
2625 }
2626 }
2627 }
2628 if let Some(current_ranges) = snippet.ranges.get(snippet.active_index) {
2629 let new_selections = current_ranges
2630 .iter()
2631 .map(|new_range| {
2632 let new_range = new_range.to_offset(&buffer);
2633 Selection {
2634 id: post_inc(&mut self.next_selection_id),
2635 start: new_range.start,
2636 end: new_range.end,
2637 reversed: false,
2638 goal: SelectionGoal::None,
2639 }
2640 })
2641 .collect();
2642
2643 // Remove the snippet state when moving to the last tabstop.
2644 if snippet.active_index + 1 == snippet.ranges.len() {
2645 self.snippet_stack.pop();
2646 }
2647
2648 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
2649 return true;
2650 }
2651 self.snippet_stack.pop();
2652 }
2653
2654 false
2655 }
2656
2657 pub fn clear(&mut self, cx: &mut ViewContext<Self>) {
2658 self.start_transaction(cx);
2659 self.select_all(&SelectAll, cx);
2660 self.insert("", cx);
2661 self.end_transaction(cx);
2662 }
2663
2664 pub fn backspace(&mut self, _: &Backspace, cx: &mut ViewContext<Self>) {
2665 self.start_transaction(cx);
2666 let mut selections = self.local_selections::<Point>(cx);
2667 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2668 for selection in &mut selections {
2669 if selection.is_empty() {
2670 let old_head = selection.head();
2671 let mut new_head =
2672 movement::left(&display_map, old_head.to_display_point(&display_map))
2673 .unwrap()
2674 .to_point(&display_map);
2675 if let Some((buffer, line_buffer_range)) = display_map
2676 .buffer_snapshot
2677 .buffer_line_for_row(old_head.row)
2678 {
2679 let indent_column = buffer.indent_column_for_line(line_buffer_range.start.row);
2680 if old_head.column <= indent_column && old_head.column > 0 {
2681 let indent = buffer.indent_size();
2682 new_head = cmp::min(
2683 new_head,
2684 Point::new(old_head.row, ((old_head.column - 1) / indent) * indent),
2685 );
2686 }
2687 }
2688
2689 selection.set_head(new_head);
2690 selection.goal = SelectionGoal::None;
2691 }
2692 }
2693 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2694 self.insert("", cx);
2695 self.end_transaction(cx);
2696 }
2697
2698 pub fn delete(&mut self, _: &Delete, cx: &mut ViewContext<Self>) {
2699 self.start_transaction(cx);
2700 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2701 let mut selections = self.local_selections::<Point>(cx);
2702 for selection in &mut selections {
2703 if selection.is_empty() {
2704 let head = selection.head().to_display_point(&display_map);
2705 let cursor = movement::right(&display_map, head)
2706 .unwrap()
2707 .to_point(&display_map);
2708 selection.set_head(cursor);
2709 selection.goal = SelectionGoal::None;
2710 }
2711 }
2712 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2713 self.insert(&"", cx);
2714 self.end_transaction(cx);
2715 }
2716
2717 pub fn tab(&mut self, _: &Tab, cx: &mut ViewContext<Self>) {
2718 if self.move_to_next_snippet_tabstop(cx) {
2719 return;
2720 }
2721
2722 self.start_transaction(cx);
2723 let tab_size = cx.global::<Settings>().tab_size;
2724 let mut selections = self.local_selections::<Point>(cx);
2725 let mut last_indent = None;
2726 self.buffer.update(cx, |buffer, cx| {
2727 for selection in &mut selections {
2728 if selection.is_empty() {
2729 let char_column = buffer
2730 .read(cx)
2731 .text_for_range(Point::new(selection.start.row, 0)..selection.start)
2732 .flat_map(str::chars)
2733 .count();
2734 let chars_to_next_tab_stop = tab_size - (char_column % tab_size);
2735 buffer.edit(
2736 [selection.start..selection.start],
2737 " ".repeat(chars_to_next_tab_stop),
2738 cx,
2739 );
2740 selection.start.column += chars_to_next_tab_stop as u32;
2741 selection.end = selection.start;
2742 } else {
2743 let mut start_row = selection.start.row;
2744 let mut end_row = selection.end.row + 1;
2745
2746 // If a selection ends at the beginning of a line, don't indent
2747 // that last line.
2748 if selection.end.column == 0 {
2749 end_row -= 1;
2750 }
2751
2752 // Avoid re-indenting a row that has already been indented by a
2753 // previous selection, but still update this selection's column
2754 // to reflect that indentation.
2755 if let Some((last_indent_row, last_indent_len)) = last_indent {
2756 if last_indent_row == selection.start.row {
2757 selection.start.column += last_indent_len;
2758 start_row += 1;
2759 }
2760 if last_indent_row == selection.end.row {
2761 selection.end.column += last_indent_len;
2762 }
2763 }
2764
2765 for row in start_row..end_row {
2766 let indent_column = buffer.read(cx).indent_column_for_line(row) as usize;
2767 let columns_to_next_tab_stop = tab_size - (indent_column % tab_size);
2768 let row_start = Point::new(row, 0);
2769 buffer.edit(
2770 [row_start..row_start],
2771 " ".repeat(columns_to_next_tab_stop),
2772 cx,
2773 );
2774
2775 // Update this selection's endpoints to reflect the indentation.
2776 if row == selection.start.row {
2777 selection.start.column += columns_to_next_tab_stop as u32;
2778 }
2779 if row == selection.end.row {
2780 selection.end.column += columns_to_next_tab_stop as u32;
2781 }
2782
2783 last_indent = Some((row, columns_to_next_tab_stop as u32));
2784 }
2785 }
2786 }
2787 });
2788
2789 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2790 self.end_transaction(cx);
2791 }
2792
2793 pub fn outdent(&mut self, _: &Outdent, cx: &mut ViewContext<Self>) {
2794 if !self.snippet_stack.is_empty() {
2795 self.move_to_prev_snippet_tabstop(cx);
2796 return;
2797 }
2798
2799 self.start_transaction(cx);
2800 let tab_size = cx.global::<Settings>().tab_size;
2801 let selections = self.local_selections::<Point>(cx);
2802 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2803 let mut deletion_ranges = Vec::new();
2804 let mut last_outdent = None;
2805 {
2806 let buffer = self.buffer.read(cx).read(cx);
2807 for selection in &selections {
2808 let mut rows = selection.spanned_rows(false, &display_map);
2809
2810 // Avoid re-outdenting a row that has already been outdented by a
2811 // previous selection.
2812 if let Some(last_row) = last_outdent {
2813 if last_row == rows.start {
2814 rows.start += 1;
2815 }
2816 }
2817
2818 for row in rows {
2819 let column = buffer.indent_column_for_line(row) as usize;
2820 if column > 0 {
2821 let mut deletion_len = (column % tab_size) as u32;
2822 if deletion_len == 0 {
2823 deletion_len = tab_size as u32;
2824 }
2825 deletion_ranges.push(Point::new(row, 0)..Point::new(row, deletion_len));
2826 last_outdent = Some(row);
2827 }
2828 }
2829 }
2830 }
2831 self.buffer.update(cx, |buffer, cx| {
2832 buffer.edit(deletion_ranges, "", cx);
2833 });
2834
2835 self.update_selections(
2836 self.local_selections::<usize>(cx),
2837 Some(Autoscroll::Fit),
2838 cx,
2839 );
2840 self.end_transaction(cx);
2841 }
2842
2843 pub fn delete_line(&mut self, _: &DeleteLine, cx: &mut ViewContext<Self>) {
2844 self.start_transaction(cx);
2845
2846 let selections = self.local_selections::<Point>(cx);
2847 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2848 let buffer = self.buffer.read(cx).snapshot(cx);
2849
2850 let mut new_cursors = Vec::new();
2851 let mut edit_ranges = Vec::new();
2852 let mut selections = selections.iter().peekable();
2853 while let Some(selection) = selections.next() {
2854 let mut rows = selection.spanned_rows(false, &display_map);
2855 let goal_display_column = selection.head().to_display_point(&display_map).column();
2856
2857 // Accumulate contiguous regions of rows that we want to delete.
2858 while let Some(next_selection) = selections.peek() {
2859 let next_rows = next_selection.spanned_rows(false, &display_map);
2860 if next_rows.start <= rows.end {
2861 rows.end = next_rows.end;
2862 selections.next().unwrap();
2863 } else {
2864 break;
2865 }
2866 }
2867
2868 let mut edit_start = Point::new(rows.start, 0).to_offset(&buffer);
2869 let edit_end;
2870 let cursor_buffer_row;
2871 if buffer.max_point().row >= rows.end {
2872 // If there's a line after the range, delete the \n from the end of the row range
2873 // and position the cursor on the next line.
2874 edit_end = Point::new(rows.end, 0).to_offset(&buffer);
2875 cursor_buffer_row = rows.end;
2876 } else {
2877 // If there isn't a line after the range, delete the \n from the line before the
2878 // start of the row range and position the cursor there.
2879 edit_start = edit_start.saturating_sub(1);
2880 edit_end = buffer.len();
2881 cursor_buffer_row = rows.start.saturating_sub(1);
2882 }
2883
2884 let mut cursor = Point::new(cursor_buffer_row, 0).to_display_point(&display_map);
2885 *cursor.column_mut() =
2886 cmp::min(goal_display_column, display_map.line_len(cursor.row()));
2887
2888 new_cursors.push((
2889 selection.id,
2890 buffer.anchor_after(cursor.to_point(&display_map)),
2891 ));
2892 edit_ranges.push(edit_start..edit_end);
2893 }
2894
2895 let buffer = self.buffer.update(cx, |buffer, cx| {
2896 buffer.edit(edit_ranges, "", cx);
2897 buffer.snapshot(cx)
2898 });
2899 let new_selections = new_cursors
2900 .into_iter()
2901 .map(|(id, cursor)| {
2902 let cursor = cursor.to_point(&buffer);
2903 Selection {
2904 id,
2905 start: cursor,
2906 end: cursor,
2907 reversed: false,
2908 goal: SelectionGoal::None,
2909 }
2910 })
2911 .collect();
2912 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
2913 self.end_transaction(cx);
2914 }
2915
2916 pub fn duplicate_line(&mut self, _: &DuplicateLine, cx: &mut ViewContext<Self>) {
2917 self.start_transaction(cx);
2918
2919 let selections = self.local_selections::<Point>(cx);
2920 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2921 let buffer = &display_map.buffer_snapshot;
2922
2923 let mut edits = Vec::new();
2924 let mut selections_iter = selections.iter().peekable();
2925 while let Some(selection) = selections_iter.next() {
2926 // Avoid duplicating the same lines twice.
2927 let mut rows = selection.spanned_rows(false, &display_map);
2928
2929 while let Some(next_selection) = selections_iter.peek() {
2930 let next_rows = next_selection.spanned_rows(false, &display_map);
2931 if next_rows.start <= rows.end - 1 {
2932 rows.end = next_rows.end;
2933 selections_iter.next().unwrap();
2934 } else {
2935 break;
2936 }
2937 }
2938
2939 // Copy the text from the selected row region and splice it at the start of the region.
2940 let start = Point::new(rows.start, 0);
2941 let end = Point::new(rows.end - 1, buffer.line_len(rows.end - 1));
2942 let text = buffer
2943 .text_for_range(start..end)
2944 .chain(Some("\n"))
2945 .collect::<String>();
2946 edits.push((start, text, rows.len() as u32));
2947 }
2948
2949 self.buffer.update(cx, |buffer, cx| {
2950 for (point, text, _) in edits.into_iter().rev() {
2951 buffer.edit(Some(point..point), text, cx);
2952 }
2953 });
2954
2955 self.request_autoscroll(Autoscroll::Fit, cx);
2956 self.end_transaction(cx);
2957 }
2958
2959 pub fn move_line_up(&mut self, _: &MoveLineUp, cx: &mut ViewContext<Self>) {
2960 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2961 let buffer = self.buffer.read(cx).snapshot(cx);
2962
2963 let mut edits = Vec::new();
2964 let mut unfold_ranges = Vec::new();
2965 let mut refold_ranges = Vec::new();
2966
2967 let selections = self.local_selections::<Point>(cx);
2968 let mut selections = selections.iter().peekable();
2969 let mut contiguous_row_selections = Vec::new();
2970 let mut new_selections = Vec::new();
2971
2972 while let Some(selection) = selections.next() {
2973 // Find all the selections that span a contiguous row range
2974 contiguous_row_selections.push(selection.clone());
2975 let start_row = selection.start.row;
2976 let mut end_row = if selection.end.column > 0 || selection.is_empty() {
2977 display_map.next_line_boundary(selection.end).0.row + 1
2978 } else {
2979 selection.end.row
2980 };
2981
2982 while let Some(next_selection) = selections.peek() {
2983 if next_selection.start.row <= end_row {
2984 end_row = if next_selection.end.column > 0 || next_selection.is_empty() {
2985 display_map.next_line_boundary(next_selection.end).0.row + 1
2986 } else {
2987 next_selection.end.row
2988 };
2989 contiguous_row_selections.push(selections.next().unwrap().clone());
2990 } else {
2991 break;
2992 }
2993 }
2994
2995 // Move the text spanned by the row range to be before the line preceding the row range
2996 if start_row > 0 {
2997 let range_to_move = Point::new(start_row - 1, buffer.line_len(start_row - 1))
2998 ..Point::new(end_row - 1, buffer.line_len(end_row - 1));
2999 let insertion_point = display_map
3000 .prev_line_boundary(Point::new(start_row - 1, 0))
3001 .0;
3002
3003 // Don't move lines across excerpts
3004 if buffer
3005 .excerpt_boundaries_in_range((
3006 Bound::Excluded(insertion_point),
3007 Bound::Included(range_to_move.end),
3008 ))
3009 .next()
3010 .is_none()
3011 {
3012 let text = buffer
3013 .text_for_range(range_to_move.clone())
3014 .flat_map(|s| s.chars())
3015 .skip(1)
3016 .chain(['\n'])
3017 .collect::<String>();
3018
3019 edits.push((
3020 buffer.anchor_after(range_to_move.start)
3021 ..buffer.anchor_before(range_to_move.end),
3022 String::new(),
3023 ));
3024 let insertion_anchor = buffer.anchor_after(insertion_point);
3025 edits.push((insertion_anchor.clone()..insertion_anchor, text));
3026
3027 let row_delta = range_to_move.start.row - insertion_point.row + 1;
3028
3029 // Move selections up
3030 new_selections.extend(contiguous_row_selections.drain(..).map(
3031 |mut selection| {
3032 selection.start.row -= row_delta;
3033 selection.end.row -= row_delta;
3034 selection
3035 },
3036 ));
3037
3038 // Move folds up
3039 unfold_ranges.push(range_to_move.clone());
3040 for fold in display_map.folds_in_range(
3041 buffer.anchor_before(range_to_move.start)
3042 ..buffer.anchor_after(range_to_move.end),
3043 ) {
3044 let mut start = fold.start.to_point(&buffer);
3045 let mut end = fold.end.to_point(&buffer);
3046 start.row -= row_delta;
3047 end.row -= row_delta;
3048 refold_ranges.push(start..end);
3049 }
3050 }
3051 }
3052
3053 // If we didn't move line(s), preserve the existing selections
3054 new_selections.extend(contiguous_row_selections.drain(..));
3055 }
3056
3057 self.start_transaction(cx);
3058 self.unfold_ranges(unfold_ranges, cx);
3059 self.buffer.update(cx, |buffer, cx| {
3060 for (range, text) in edits {
3061 buffer.edit([range], text, cx);
3062 }
3063 });
3064 self.fold_ranges(refold_ranges, cx);
3065 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
3066 self.end_transaction(cx);
3067 }
3068
3069 pub fn move_line_down(&mut self, _: &MoveLineDown, cx: &mut ViewContext<Self>) {
3070 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3071 let buffer = self.buffer.read(cx).snapshot(cx);
3072
3073 let mut edits = Vec::new();
3074 let mut unfold_ranges = Vec::new();
3075 let mut refold_ranges = Vec::new();
3076
3077 let selections = self.local_selections::<Point>(cx);
3078 let mut selections = selections.iter().peekable();
3079 let mut contiguous_row_selections = Vec::new();
3080 let mut new_selections = Vec::new();
3081
3082 while let Some(selection) = selections.next() {
3083 // Find all the selections that span a contiguous row range
3084 contiguous_row_selections.push(selection.clone());
3085 let start_row = selection.start.row;
3086 let mut end_row = if selection.end.column > 0 || selection.is_empty() {
3087 display_map.next_line_boundary(selection.end).0.row + 1
3088 } else {
3089 selection.end.row
3090 };
3091
3092 while let Some(next_selection) = selections.peek() {
3093 if next_selection.start.row <= end_row {
3094 end_row = if next_selection.end.column > 0 || next_selection.is_empty() {
3095 display_map.next_line_boundary(next_selection.end).0.row + 1
3096 } else {
3097 next_selection.end.row
3098 };
3099 contiguous_row_selections.push(selections.next().unwrap().clone());
3100 } else {
3101 break;
3102 }
3103 }
3104
3105 // Move the text spanned by the row range to be after the last line of the row range
3106 if end_row <= buffer.max_point().row {
3107 let range_to_move = Point::new(start_row, 0)..Point::new(end_row, 0);
3108 let insertion_point = display_map.next_line_boundary(Point::new(end_row, 0)).0;
3109
3110 // Don't move lines across excerpt boundaries
3111 if buffer
3112 .excerpt_boundaries_in_range((
3113 Bound::Excluded(range_to_move.start),
3114 Bound::Included(insertion_point),
3115 ))
3116 .next()
3117 .is_none()
3118 {
3119 let mut text = String::from("\n");
3120 text.extend(buffer.text_for_range(range_to_move.clone()));
3121 text.pop(); // Drop trailing newline
3122 edits.push((
3123 buffer.anchor_after(range_to_move.start)
3124 ..buffer.anchor_before(range_to_move.end),
3125 String::new(),
3126 ));
3127 let insertion_anchor = buffer.anchor_after(insertion_point);
3128 edits.push((insertion_anchor.clone()..insertion_anchor, text));
3129
3130 let row_delta = insertion_point.row - range_to_move.end.row + 1;
3131
3132 // Move selections down
3133 new_selections.extend(contiguous_row_selections.drain(..).map(
3134 |mut selection| {
3135 selection.start.row += row_delta;
3136 selection.end.row += row_delta;
3137 selection
3138 },
3139 ));
3140
3141 // Move folds down
3142 unfold_ranges.push(range_to_move.clone());
3143 for fold in display_map.folds_in_range(
3144 buffer.anchor_before(range_to_move.start)
3145 ..buffer.anchor_after(range_to_move.end),
3146 ) {
3147 let mut start = fold.start.to_point(&buffer);
3148 let mut end = fold.end.to_point(&buffer);
3149 start.row += row_delta;
3150 end.row += row_delta;
3151 refold_ranges.push(start..end);
3152 }
3153 }
3154 }
3155
3156 // If we didn't move line(s), preserve the existing selections
3157 new_selections.extend(contiguous_row_selections.drain(..));
3158 }
3159
3160 self.start_transaction(cx);
3161 self.unfold_ranges(unfold_ranges, cx);
3162 self.buffer.update(cx, |buffer, cx| {
3163 for (range, text) in edits {
3164 buffer.edit([range], text, cx);
3165 }
3166 });
3167 self.fold_ranges(refold_ranges, cx);
3168 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
3169 self.end_transaction(cx);
3170 }
3171
3172 pub fn cut(&mut self, _: &Cut, cx: &mut ViewContext<Self>) {
3173 self.start_transaction(cx);
3174 let mut text = String::new();
3175 let mut selections = self.local_selections::<Point>(cx);
3176 let mut clipboard_selections = Vec::with_capacity(selections.len());
3177 {
3178 let buffer = self.buffer.read(cx).read(cx);
3179 let max_point = buffer.max_point();
3180 for selection in &mut selections {
3181 let is_entire_line = selection.is_empty();
3182 if is_entire_line {
3183 selection.start = Point::new(selection.start.row, 0);
3184 selection.end = cmp::min(max_point, Point::new(selection.end.row + 1, 0));
3185 selection.goal = SelectionGoal::None;
3186 }
3187 let mut len = 0;
3188 for chunk in buffer.text_for_range(selection.start..selection.end) {
3189 text.push_str(chunk);
3190 len += chunk.len();
3191 }
3192 clipboard_selections.push(ClipboardSelection {
3193 len,
3194 is_entire_line,
3195 });
3196 }
3197 }
3198 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3199 self.insert("", cx);
3200 self.end_transaction(cx);
3201
3202 cx.as_mut()
3203 .write_to_clipboard(ClipboardItem::new(text).with_metadata(clipboard_selections));
3204 }
3205
3206 pub fn copy(&mut self, _: &Copy, cx: &mut ViewContext<Self>) {
3207 let selections = self.local_selections::<Point>(cx);
3208 let mut text = String::new();
3209 let mut clipboard_selections = Vec::with_capacity(selections.len());
3210 {
3211 let buffer = self.buffer.read(cx).read(cx);
3212 let max_point = buffer.max_point();
3213 for selection in selections.iter() {
3214 let mut start = selection.start;
3215 let mut end = selection.end;
3216 let is_entire_line = selection.is_empty();
3217 if is_entire_line {
3218 start = Point::new(start.row, 0);
3219 end = cmp::min(max_point, Point::new(start.row + 1, 0));
3220 }
3221 let mut len = 0;
3222 for chunk in buffer.text_for_range(start..end) {
3223 text.push_str(chunk);
3224 len += chunk.len();
3225 }
3226 clipboard_selections.push(ClipboardSelection {
3227 len,
3228 is_entire_line,
3229 });
3230 }
3231 }
3232
3233 cx.as_mut()
3234 .write_to_clipboard(ClipboardItem::new(text).with_metadata(clipboard_selections));
3235 }
3236
3237 pub fn paste(&mut self, _: &Paste, cx: &mut ViewContext<Self>) {
3238 if let Some(item) = cx.as_mut().read_from_clipboard() {
3239 let clipboard_text = item.text();
3240 if let Some(mut clipboard_selections) = item.metadata::<Vec<ClipboardSelection>>() {
3241 let mut selections = self.local_selections::<usize>(cx);
3242 let all_selections_were_entire_line =
3243 clipboard_selections.iter().all(|s| s.is_entire_line);
3244 if clipboard_selections.len() != selections.len() {
3245 clipboard_selections.clear();
3246 }
3247
3248 let mut delta = 0_isize;
3249 let mut start_offset = 0;
3250 for (i, selection) in selections.iter_mut().enumerate() {
3251 let to_insert;
3252 let entire_line;
3253 if let Some(clipboard_selection) = clipboard_selections.get(i) {
3254 let end_offset = start_offset + clipboard_selection.len;
3255 to_insert = &clipboard_text[start_offset..end_offset];
3256 entire_line = clipboard_selection.is_entire_line;
3257 start_offset = end_offset
3258 } else {
3259 to_insert = clipboard_text.as_str();
3260 entire_line = all_selections_were_entire_line;
3261 }
3262
3263 selection.start = (selection.start as isize + delta) as usize;
3264 selection.end = (selection.end as isize + delta) as usize;
3265
3266 self.buffer.update(cx, |buffer, cx| {
3267 // If the corresponding selection was empty when this slice of the
3268 // clipboard text was written, then the entire line containing the
3269 // selection was copied. If this selection is also currently empty,
3270 // then paste the line before the current line of the buffer.
3271 let range = if selection.is_empty() && entire_line {
3272 let column = selection.start.to_point(&buffer.read(cx)).column as usize;
3273 let line_start = selection.start - column;
3274 line_start..line_start
3275 } else {
3276 selection.start..selection.end
3277 };
3278
3279 delta += to_insert.len() as isize - range.len() as isize;
3280 buffer.edit([range], to_insert, cx);
3281 selection.start += to_insert.len();
3282 selection.end = selection.start;
3283 });
3284 }
3285 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3286 } else {
3287 self.insert(clipboard_text, cx);
3288 }
3289 }
3290 }
3291
3292 pub fn undo(&mut self, _: &Undo, cx: &mut ViewContext<Self>) {
3293 if let Some(tx_id) = self.buffer.update(cx, |buffer, cx| buffer.undo(cx)) {
3294 if let Some((selections, _)) = self.selection_history.get(&tx_id).cloned() {
3295 self.set_selections(selections, None, cx);
3296 }
3297 self.request_autoscroll(Autoscroll::Fit, cx);
3298 }
3299 }
3300
3301 pub fn redo(&mut self, _: &Redo, cx: &mut ViewContext<Self>) {
3302 if let Some(tx_id) = self.buffer.update(cx, |buffer, cx| buffer.redo(cx)) {
3303 if let Some((_, Some(selections))) = self.selection_history.get(&tx_id).cloned() {
3304 self.set_selections(selections, None, cx);
3305 }
3306 self.request_autoscroll(Autoscroll::Fit, cx);
3307 }
3308 }
3309
3310 pub fn finalize_last_transaction(&mut self, cx: &mut ViewContext<Self>) {
3311 self.buffer
3312 .update(cx, |buffer, cx| buffer.finalize_last_transaction(cx));
3313 }
3314
3315 pub fn move_left(&mut self, _: &MoveLeft, cx: &mut ViewContext<Self>) {
3316 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3317 let mut selections = self.local_selections::<Point>(cx);
3318 for selection in &mut selections {
3319 let start = selection.start.to_display_point(&display_map);
3320 let end = selection.end.to_display_point(&display_map);
3321
3322 if start != end {
3323 selection.end = selection.start.clone();
3324 } else {
3325 let cursor = movement::left(&display_map, start)
3326 .unwrap()
3327 .to_point(&display_map);
3328 selection.start = cursor.clone();
3329 selection.end = cursor;
3330 }
3331 selection.reversed = false;
3332 selection.goal = SelectionGoal::None;
3333 }
3334 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3335 }
3336
3337 pub fn select_left(&mut self, _: &SelectLeft, cx: &mut ViewContext<Self>) {
3338 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3339 let mut selections = self.local_selections::<Point>(cx);
3340 for selection in &mut selections {
3341 let head = selection.head().to_display_point(&display_map);
3342 let cursor = movement::left(&display_map, head)
3343 .unwrap()
3344 .to_point(&display_map);
3345 selection.set_head(cursor);
3346 selection.goal = SelectionGoal::None;
3347 }
3348 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3349 }
3350
3351 pub fn move_right(&mut self, _: &MoveRight, cx: &mut ViewContext<Self>) {
3352 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3353 let mut selections = self.local_selections::<Point>(cx);
3354 for selection in &mut selections {
3355 let start = selection.start.to_display_point(&display_map);
3356 let end = selection.end.to_display_point(&display_map);
3357
3358 if start != end {
3359 selection.start = selection.end.clone();
3360 } else {
3361 let cursor = movement::right(&display_map, end)
3362 .unwrap()
3363 .to_point(&display_map);
3364 selection.start = cursor;
3365 selection.end = cursor;
3366 }
3367 selection.reversed = false;
3368 selection.goal = SelectionGoal::None;
3369 }
3370 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3371 }
3372
3373 pub fn select_right(&mut self, _: &SelectRight, cx: &mut ViewContext<Self>) {
3374 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3375 let mut selections = self.local_selections::<Point>(cx);
3376 for selection in &mut selections {
3377 let head = selection.head().to_display_point(&display_map);
3378 let cursor = movement::right(&display_map, head)
3379 .unwrap()
3380 .to_point(&display_map);
3381 selection.set_head(cursor);
3382 selection.goal = SelectionGoal::None;
3383 }
3384 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3385 }
3386
3387 pub fn move_up(&mut self, _: &MoveUp, cx: &mut ViewContext<Self>) {
3388 if self.take_rename(true, cx).is_some() {
3389 return;
3390 }
3391
3392 if let Some(context_menu) = self.context_menu.as_mut() {
3393 if context_menu.select_prev(cx) {
3394 return;
3395 }
3396 }
3397
3398 if matches!(self.mode, EditorMode::SingleLine) {
3399 cx.propagate_action();
3400 return;
3401 }
3402
3403 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3404 let mut selections = self.local_selections::<Point>(cx);
3405 for selection in &mut selections {
3406 let start = selection.start.to_display_point(&display_map);
3407 let end = selection.end.to_display_point(&display_map);
3408 if start != end {
3409 selection.goal = SelectionGoal::None;
3410 }
3411
3412 let (start, goal) = movement::up(&display_map, start, selection.goal).unwrap();
3413 let cursor = start.to_point(&display_map);
3414 selection.start = cursor;
3415 selection.end = cursor;
3416 selection.goal = goal;
3417 selection.reversed = false;
3418 }
3419 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3420 }
3421
3422 pub fn select_up(&mut self, _: &SelectUp, cx: &mut ViewContext<Self>) {
3423 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3424 let mut selections = self.local_selections::<Point>(cx);
3425 for selection in &mut selections {
3426 let head = selection.head().to_display_point(&display_map);
3427 let (head, goal) = movement::up(&display_map, head, selection.goal).unwrap();
3428 let cursor = head.to_point(&display_map);
3429 selection.set_head(cursor);
3430 selection.goal = goal;
3431 }
3432 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3433 }
3434
3435 pub fn move_down(&mut self, _: &MoveDown, cx: &mut ViewContext<Self>) {
3436 self.take_rename(true, cx);
3437
3438 if let Some(context_menu) = self.context_menu.as_mut() {
3439 if context_menu.select_next(cx) {
3440 return;
3441 }
3442 }
3443
3444 if matches!(self.mode, EditorMode::SingleLine) {
3445 cx.propagate_action();
3446 return;
3447 }
3448
3449 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3450 let mut selections = self.local_selections::<Point>(cx);
3451 for selection in &mut selections {
3452 let start = selection.start.to_display_point(&display_map);
3453 let end = selection.end.to_display_point(&display_map);
3454 if start != end {
3455 selection.goal = SelectionGoal::None;
3456 }
3457
3458 let (start, goal) = movement::down(&display_map, end, selection.goal).unwrap();
3459 let cursor = start.to_point(&display_map);
3460 selection.start = cursor;
3461 selection.end = cursor;
3462 selection.goal = goal;
3463 selection.reversed = false;
3464 }
3465 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3466 }
3467
3468 pub fn select_down(&mut self, _: &SelectDown, cx: &mut ViewContext<Self>) {
3469 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3470 let mut selections = self.local_selections::<Point>(cx);
3471 for selection in &mut selections {
3472 let head = selection.head().to_display_point(&display_map);
3473 let (head, goal) = movement::down(&display_map, head, selection.goal).unwrap();
3474 let cursor = head.to_point(&display_map);
3475 selection.set_head(cursor);
3476 selection.goal = goal;
3477 }
3478 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3479 }
3480
3481 pub fn move_to_previous_word_boundary(
3482 &mut self,
3483 _: &MoveToPreviousWordBoundary,
3484 cx: &mut ViewContext<Self>,
3485 ) {
3486 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3487 let mut selections = self.local_selections::<Point>(cx);
3488 for selection in &mut selections {
3489 let head = selection.head().to_display_point(&display_map);
3490 let cursor = movement::prev_word_boundary(&display_map, head).to_point(&display_map);
3491 selection.start = cursor.clone();
3492 selection.end = cursor;
3493 selection.reversed = false;
3494 selection.goal = SelectionGoal::None;
3495 }
3496 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3497 }
3498
3499 pub fn select_to_previous_word_boundary(
3500 &mut self,
3501 _: &SelectToPreviousWordBoundary,
3502 cx: &mut ViewContext<Self>,
3503 ) {
3504 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3505 let mut selections = self.local_selections::<Point>(cx);
3506 for selection in &mut selections {
3507 let head = selection.head().to_display_point(&display_map);
3508 let cursor = movement::prev_word_boundary(&display_map, head).to_point(&display_map);
3509 selection.set_head(cursor);
3510 selection.goal = SelectionGoal::None;
3511 }
3512 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3513 }
3514
3515 pub fn delete_to_previous_word_boundary(
3516 &mut self,
3517 _: &DeleteToPreviousWordBoundary,
3518 cx: &mut ViewContext<Self>,
3519 ) {
3520 self.start_transaction(cx);
3521 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3522 let mut selections = self.local_selections::<Point>(cx);
3523 for selection in &mut selections {
3524 if selection.is_empty() {
3525 let head = selection.head().to_display_point(&display_map);
3526 let cursor =
3527 movement::prev_word_boundary(&display_map, head).to_point(&display_map);
3528 selection.set_head(cursor);
3529 selection.goal = SelectionGoal::None;
3530 }
3531 }
3532 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3533 self.insert("", cx);
3534 self.end_transaction(cx);
3535 }
3536
3537 pub fn move_to_next_word_boundary(
3538 &mut self,
3539 _: &MoveToNextWordBoundary,
3540 cx: &mut ViewContext<Self>,
3541 ) {
3542 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3543 let mut selections = self.local_selections::<Point>(cx);
3544 for selection in &mut selections {
3545 let head = selection.head().to_display_point(&display_map);
3546 let cursor = movement::next_word_boundary(&display_map, head).to_point(&display_map);
3547 selection.start = cursor;
3548 selection.end = cursor;
3549 selection.reversed = false;
3550 selection.goal = SelectionGoal::None;
3551 }
3552 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3553 }
3554
3555 pub fn select_to_next_word_boundary(
3556 &mut self,
3557 _: &SelectToNextWordBoundary,
3558 cx: &mut ViewContext<Self>,
3559 ) {
3560 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3561 let mut selections = self.local_selections::<Point>(cx);
3562 for selection in &mut selections {
3563 let head = selection.head().to_display_point(&display_map);
3564 let cursor = movement::next_word_boundary(&display_map, head).to_point(&display_map);
3565 selection.set_head(cursor);
3566 selection.goal = SelectionGoal::None;
3567 }
3568 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3569 }
3570
3571 pub fn delete_to_next_word_boundary(
3572 &mut self,
3573 _: &DeleteToNextWordBoundary,
3574 cx: &mut ViewContext<Self>,
3575 ) {
3576 self.start_transaction(cx);
3577 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3578 let mut selections = self.local_selections::<Point>(cx);
3579 for selection in &mut selections {
3580 if selection.is_empty() {
3581 let head = selection.head().to_display_point(&display_map);
3582 let cursor =
3583 movement::next_word_boundary(&display_map, head).to_point(&display_map);
3584 selection.set_head(cursor);
3585 selection.goal = SelectionGoal::None;
3586 }
3587 }
3588 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3589 self.insert("", cx);
3590 self.end_transaction(cx);
3591 }
3592
3593 pub fn move_to_beginning_of_line(
3594 &mut self,
3595 _: &MoveToBeginningOfLine,
3596 cx: &mut ViewContext<Self>,
3597 ) {
3598 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3599 let mut selections = self.local_selections::<Point>(cx);
3600 for selection in &mut selections {
3601 let head = selection.head().to_display_point(&display_map);
3602 let new_head = movement::line_beginning(&display_map, head, true);
3603 let cursor = new_head.to_point(&display_map);
3604 selection.start = cursor;
3605 selection.end = cursor;
3606 selection.reversed = false;
3607 selection.goal = SelectionGoal::None;
3608 }
3609 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3610 }
3611
3612 pub fn select_to_beginning_of_line(
3613 &mut self,
3614 SelectToBeginningOfLine(stop_at_soft_boundaries): &SelectToBeginningOfLine,
3615 cx: &mut ViewContext<Self>,
3616 ) {
3617 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3618 let mut selections = self.local_selections::<Point>(cx);
3619 for selection in &mut selections {
3620 let head = selection.head().to_display_point(&display_map);
3621 let new_head = movement::line_beginning(&display_map, head, *stop_at_soft_boundaries);
3622 selection.set_head(new_head.to_point(&display_map));
3623 selection.goal = SelectionGoal::None;
3624 }
3625 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3626 }
3627
3628 pub fn delete_to_beginning_of_line(
3629 &mut self,
3630 _: &DeleteToBeginningOfLine,
3631 cx: &mut ViewContext<Self>,
3632 ) {
3633 self.start_transaction(cx);
3634 self.select_to_beginning_of_line(&SelectToBeginningOfLine(false), cx);
3635 self.backspace(&Backspace, cx);
3636 self.end_transaction(cx);
3637 }
3638
3639 pub fn move_to_end_of_line(&mut self, _: &MoveToEndOfLine, cx: &mut ViewContext<Self>) {
3640 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3641 let mut selections = self.local_selections::<Point>(cx);
3642 {
3643 for selection in &mut selections {
3644 let head = selection.head().to_display_point(&display_map);
3645 let new_head = movement::line_end(&display_map, head, true);
3646 let anchor = new_head.to_point(&display_map);
3647 selection.start = anchor.clone();
3648 selection.end = anchor;
3649 selection.reversed = false;
3650 selection.goal = SelectionGoal::None;
3651 }
3652 }
3653 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3654 }
3655
3656 pub fn select_to_end_of_line(
3657 &mut self,
3658 SelectToEndOfLine(stop_at_soft_boundaries): &SelectToEndOfLine,
3659 cx: &mut ViewContext<Self>,
3660 ) {
3661 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3662 let mut selections = self.local_selections::<Point>(cx);
3663 for selection in &mut selections {
3664 let head = selection.head().to_display_point(&display_map);
3665 let new_head = movement::line_end(&display_map, head, *stop_at_soft_boundaries);
3666 selection.set_head(new_head.to_point(&display_map));
3667 selection.goal = SelectionGoal::None;
3668 }
3669 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3670 }
3671
3672 pub fn delete_to_end_of_line(&mut self, _: &DeleteToEndOfLine, cx: &mut ViewContext<Self>) {
3673 self.start_transaction(cx);
3674 self.select_to_end_of_line(&SelectToEndOfLine(false), cx);
3675 self.delete(&Delete, cx);
3676 self.end_transaction(cx);
3677 }
3678
3679 pub fn cut_to_end_of_line(&mut self, _: &CutToEndOfLine, cx: &mut ViewContext<Self>) {
3680 self.start_transaction(cx);
3681 self.select_to_end_of_line(&SelectToEndOfLine(false), cx);
3682 self.cut(&Cut, cx);
3683 self.end_transaction(cx);
3684 }
3685
3686 pub fn move_to_beginning(&mut self, _: &MoveToBeginning, cx: &mut ViewContext<Self>) {
3687 if matches!(self.mode, EditorMode::SingleLine) {
3688 cx.propagate_action();
3689 return;
3690 }
3691
3692 let selection = Selection {
3693 id: post_inc(&mut self.next_selection_id),
3694 start: 0,
3695 end: 0,
3696 reversed: false,
3697 goal: SelectionGoal::None,
3698 };
3699 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
3700 }
3701
3702 pub fn select_to_beginning(&mut self, _: &SelectToBeginning, cx: &mut ViewContext<Self>) {
3703 let mut selection = self.local_selections::<Point>(cx).last().unwrap().clone();
3704 selection.set_head(Point::zero());
3705 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
3706 }
3707
3708 pub fn move_to_end(&mut self, _: &MoveToEnd, cx: &mut ViewContext<Self>) {
3709 if matches!(self.mode, EditorMode::SingleLine) {
3710 cx.propagate_action();
3711 return;
3712 }
3713
3714 let cursor = self.buffer.read(cx).read(cx).len();
3715 let selection = Selection {
3716 id: post_inc(&mut self.next_selection_id),
3717 start: cursor,
3718 end: cursor,
3719 reversed: false,
3720 goal: SelectionGoal::None,
3721 };
3722 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
3723 }
3724
3725 pub fn set_nav_history(&mut self, nav_history: Option<ItemNavHistory>) {
3726 self.nav_history = nav_history;
3727 }
3728
3729 pub fn nav_history(&self) -> Option<&ItemNavHistory> {
3730 self.nav_history.as_ref()
3731 }
3732
3733 fn push_to_nav_history(
3734 &self,
3735 position: Anchor,
3736 new_position: Option<Point>,
3737 cx: &mut ViewContext<Self>,
3738 ) {
3739 if let Some(nav_history) = &self.nav_history {
3740 let buffer = self.buffer.read(cx).read(cx);
3741 let offset = position.to_offset(&buffer);
3742 let point = position.to_point(&buffer);
3743 drop(buffer);
3744
3745 if let Some(new_position) = new_position {
3746 let row_delta = (new_position.row as i64 - point.row as i64).abs();
3747 if row_delta < MIN_NAVIGATION_HISTORY_ROW_DELTA {
3748 return;
3749 }
3750 }
3751
3752 nav_history.push(Some(NavigationData {
3753 anchor: position,
3754 offset,
3755 }));
3756 }
3757 }
3758
3759 pub fn select_to_end(&mut self, _: &SelectToEnd, cx: &mut ViewContext<Self>) {
3760 let mut selection = self.local_selections::<usize>(cx).first().unwrap().clone();
3761 selection.set_head(self.buffer.read(cx).read(cx).len());
3762 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
3763 }
3764
3765 pub fn select_all(&mut self, _: &SelectAll, cx: &mut ViewContext<Self>) {
3766 let selection = Selection {
3767 id: post_inc(&mut self.next_selection_id),
3768 start: 0,
3769 end: self.buffer.read(cx).read(cx).len(),
3770 reversed: false,
3771 goal: SelectionGoal::None,
3772 };
3773 self.update_selections(vec![selection], None, cx);
3774 }
3775
3776 pub fn select_line(&mut self, _: &SelectLine, cx: &mut ViewContext<Self>) {
3777 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3778 let mut selections = self.local_selections::<Point>(cx);
3779 let max_point = display_map.buffer_snapshot.max_point();
3780 for selection in &mut selections {
3781 let rows = selection.spanned_rows(true, &display_map);
3782 selection.start = Point::new(rows.start, 0);
3783 selection.end = cmp::min(max_point, Point::new(rows.end, 0));
3784 selection.reversed = false;
3785 }
3786 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3787 }
3788
3789 pub fn split_selection_into_lines(
3790 &mut self,
3791 _: &SplitSelectionIntoLines,
3792 cx: &mut ViewContext<Self>,
3793 ) {
3794 let mut to_unfold = Vec::new();
3795 let mut new_selections = Vec::new();
3796 {
3797 let selections = self.local_selections::<Point>(cx);
3798 let buffer = self.buffer.read(cx).read(cx);
3799 for selection in selections {
3800 for row in selection.start.row..selection.end.row {
3801 let cursor = Point::new(row, buffer.line_len(row));
3802 new_selections.push(Selection {
3803 id: post_inc(&mut self.next_selection_id),
3804 start: cursor,
3805 end: cursor,
3806 reversed: false,
3807 goal: SelectionGoal::None,
3808 });
3809 }
3810 new_selections.push(Selection {
3811 id: selection.id,
3812 start: selection.end,
3813 end: selection.end,
3814 reversed: false,
3815 goal: SelectionGoal::None,
3816 });
3817 to_unfold.push(selection.start..selection.end);
3818 }
3819 }
3820 self.unfold_ranges(to_unfold, cx);
3821 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
3822 }
3823
3824 pub fn add_selection_above(&mut self, _: &AddSelectionAbove, cx: &mut ViewContext<Self>) {
3825 self.add_selection(true, cx);
3826 }
3827
3828 pub fn add_selection_below(&mut self, _: &AddSelectionBelow, cx: &mut ViewContext<Self>) {
3829 self.add_selection(false, cx);
3830 }
3831
3832 fn add_selection(&mut self, above: bool, cx: &mut ViewContext<Self>) {
3833 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3834 let mut selections = self.local_selections::<Point>(cx);
3835 let mut state = self.add_selections_state.take().unwrap_or_else(|| {
3836 let oldest_selection = selections.iter().min_by_key(|s| s.id).unwrap().clone();
3837 let range = oldest_selection.display_range(&display_map).sorted();
3838 let columns = cmp::min(range.start.column(), range.end.column())
3839 ..cmp::max(range.start.column(), range.end.column());
3840
3841 selections.clear();
3842 let mut stack = Vec::new();
3843 for row in range.start.row()..=range.end.row() {
3844 if let Some(selection) = self.build_columnar_selection(
3845 &display_map,
3846 row,
3847 &columns,
3848 oldest_selection.reversed,
3849 ) {
3850 stack.push(selection.id);
3851 selections.push(selection);
3852 }
3853 }
3854
3855 if above {
3856 stack.reverse();
3857 }
3858
3859 AddSelectionsState { above, stack }
3860 });
3861
3862 let last_added_selection = *state.stack.last().unwrap();
3863 let mut new_selections = Vec::new();
3864 if above == state.above {
3865 let end_row = if above {
3866 0
3867 } else {
3868 display_map.max_point().row()
3869 };
3870
3871 'outer: for selection in selections {
3872 if selection.id == last_added_selection {
3873 let range = selection.display_range(&display_map).sorted();
3874 debug_assert_eq!(range.start.row(), range.end.row());
3875 let mut row = range.start.row();
3876 let columns = if let SelectionGoal::ColumnRange { start, end } = selection.goal
3877 {
3878 start..end
3879 } else {
3880 cmp::min(range.start.column(), range.end.column())
3881 ..cmp::max(range.start.column(), range.end.column())
3882 };
3883
3884 while row != end_row {
3885 if above {
3886 row -= 1;
3887 } else {
3888 row += 1;
3889 }
3890
3891 if let Some(new_selection) = self.build_columnar_selection(
3892 &display_map,
3893 row,
3894 &columns,
3895 selection.reversed,
3896 ) {
3897 state.stack.push(new_selection.id);
3898 if above {
3899 new_selections.push(new_selection);
3900 new_selections.push(selection);
3901 } else {
3902 new_selections.push(selection);
3903 new_selections.push(new_selection);
3904 }
3905
3906 continue 'outer;
3907 }
3908 }
3909 }
3910
3911 new_selections.push(selection);
3912 }
3913 } else {
3914 new_selections = selections;
3915 new_selections.retain(|s| s.id != last_added_selection);
3916 state.stack.pop();
3917 }
3918
3919 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
3920 if state.stack.len() > 1 {
3921 self.add_selections_state = Some(state);
3922 }
3923 }
3924
3925 pub fn select_next(&mut self, action: &SelectNext, cx: &mut ViewContext<Self>) {
3926 let replace_newest = action.0;
3927 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3928 let buffer = &display_map.buffer_snapshot;
3929 let mut selections = self.local_selections::<usize>(cx);
3930 if let Some(mut select_next_state) = self.select_next_state.take() {
3931 let query = &select_next_state.query;
3932 if !select_next_state.done {
3933 let first_selection = selections.iter().min_by_key(|s| s.id).unwrap();
3934 let last_selection = selections.iter().max_by_key(|s| s.id).unwrap();
3935 let mut next_selected_range = None;
3936
3937 let bytes_after_last_selection =
3938 buffer.bytes_in_range(last_selection.end..buffer.len());
3939 let bytes_before_first_selection = buffer.bytes_in_range(0..first_selection.start);
3940 let query_matches = query
3941 .stream_find_iter(bytes_after_last_selection)
3942 .map(|result| (last_selection.end, result))
3943 .chain(
3944 query
3945 .stream_find_iter(bytes_before_first_selection)
3946 .map(|result| (0, result)),
3947 );
3948 for (start_offset, query_match) in query_matches {
3949 let query_match = query_match.unwrap(); // can only fail due to I/O
3950 let offset_range =
3951 start_offset + query_match.start()..start_offset + query_match.end();
3952 let display_range = offset_range.start.to_display_point(&display_map)
3953 ..offset_range.end.to_display_point(&display_map);
3954
3955 if !select_next_state.wordwise
3956 || (!movement::is_inside_word(&display_map, display_range.start)
3957 && !movement::is_inside_word(&display_map, display_range.end))
3958 {
3959 next_selected_range = Some(offset_range);
3960 break;
3961 }
3962 }
3963
3964 if let Some(next_selected_range) = next_selected_range {
3965 if replace_newest {
3966 if let Some(newest_id) =
3967 selections.iter().max_by_key(|s| s.id).map(|s| s.id)
3968 {
3969 selections.retain(|s| s.id != newest_id);
3970 }
3971 }
3972 selections.push(Selection {
3973 id: post_inc(&mut self.next_selection_id),
3974 start: next_selected_range.start,
3975 end: next_selected_range.end,
3976 reversed: false,
3977 goal: SelectionGoal::None,
3978 });
3979 self.update_selections(selections, Some(Autoscroll::Newest), cx);
3980 } else {
3981 select_next_state.done = true;
3982 }
3983 }
3984
3985 self.select_next_state = Some(select_next_state);
3986 } else if selections.len() == 1 {
3987 let selection = selections.last_mut().unwrap();
3988 if selection.start == selection.end {
3989 let word_range = movement::surrounding_word(
3990 &display_map,
3991 selection.start.to_display_point(&display_map),
3992 );
3993 selection.start = word_range.start.to_offset(&display_map, Bias::Left);
3994 selection.end = word_range.end.to_offset(&display_map, Bias::Left);
3995 selection.goal = SelectionGoal::None;
3996 selection.reversed = false;
3997
3998 let query = buffer
3999 .text_for_range(selection.start..selection.end)
4000 .collect::<String>();
4001 let select_state = SelectNextState {
4002 query: AhoCorasick::new_auto_configured(&[query]),
4003 wordwise: true,
4004 done: false,
4005 };
4006 self.update_selections(selections, Some(Autoscroll::Newest), cx);
4007 self.select_next_state = Some(select_state);
4008 } else {
4009 let query = buffer
4010 .text_for_range(selection.start..selection.end)
4011 .collect::<String>();
4012 self.select_next_state = Some(SelectNextState {
4013 query: AhoCorasick::new_auto_configured(&[query]),
4014 wordwise: false,
4015 done: false,
4016 });
4017 self.select_next(action, cx);
4018 }
4019 }
4020 }
4021
4022 pub fn toggle_comments(&mut self, _: &ToggleComments, cx: &mut ViewContext<Self>) {
4023 // Get the line comment prefix. Split its trailing whitespace into a separate string,
4024 // as that portion won't be used for detecting if a line is a comment.
4025 let full_comment_prefix =
4026 if let Some(prefix) = self.language(cx).and_then(|l| l.line_comment_prefix()) {
4027 prefix.to_string()
4028 } else {
4029 return;
4030 };
4031 let comment_prefix = full_comment_prefix.trim_end_matches(' ');
4032 let comment_prefix_whitespace = &full_comment_prefix[comment_prefix.len()..];
4033
4034 self.start_transaction(cx);
4035 let mut selections = self.local_selections::<Point>(cx);
4036 let mut all_selection_lines_are_comments = true;
4037 let mut edit_ranges = Vec::new();
4038 let mut last_toggled_row = None;
4039 self.buffer.update(cx, |buffer, cx| {
4040 for selection in &mut selections {
4041 edit_ranges.clear();
4042 let snapshot = buffer.snapshot(cx);
4043
4044 let end_row =
4045 if selection.end.row > selection.start.row && selection.end.column == 0 {
4046 selection.end.row
4047 } else {
4048 selection.end.row + 1
4049 };
4050
4051 for row in selection.start.row..end_row {
4052 // If multiple selections contain a given row, avoid processing that
4053 // row more than once.
4054 if last_toggled_row == Some(row) {
4055 continue;
4056 } else {
4057 last_toggled_row = Some(row);
4058 }
4059
4060 if snapshot.is_line_blank(row) {
4061 continue;
4062 }
4063
4064 let start = Point::new(row, snapshot.indent_column_for_line(row));
4065 let mut line_bytes = snapshot
4066 .bytes_in_range(start..snapshot.max_point())
4067 .flatten()
4068 .copied();
4069
4070 // If this line currently begins with the line comment prefix, then record
4071 // the range containing the prefix.
4072 if all_selection_lines_are_comments
4073 && line_bytes
4074 .by_ref()
4075 .take(comment_prefix.len())
4076 .eq(comment_prefix.bytes())
4077 {
4078 // Include any whitespace that matches the comment prefix.
4079 let matching_whitespace_len = line_bytes
4080 .zip(comment_prefix_whitespace.bytes())
4081 .take_while(|(a, b)| a == b)
4082 .count() as u32;
4083 let end = Point::new(
4084 row,
4085 start.column + comment_prefix.len() as u32 + matching_whitespace_len,
4086 );
4087 edit_ranges.push(start..end);
4088 }
4089 // If this line does not begin with the line comment prefix, then record
4090 // the position where the prefix should be inserted.
4091 else {
4092 all_selection_lines_are_comments = false;
4093 edit_ranges.push(start..start);
4094 }
4095 }
4096
4097 if !edit_ranges.is_empty() {
4098 if all_selection_lines_are_comments {
4099 buffer.edit(edit_ranges.iter().cloned(), "", cx);
4100 } else {
4101 let min_column = edit_ranges.iter().map(|r| r.start.column).min().unwrap();
4102 let edit_ranges = edit_ranges.iter().map(|range| {
4103 let position = Point::new(range.start.row, min_column);
4104 position..position
4105 });
4106 buffer.edit(edit_ranges, &full_comment_prefix, cx);
4107 }
4108 }
4109 }
4110 });
4111
4112 self.update_selections(
4113 self.local_selections::<usize>(cx),
4114 Some(Autoscroll::Fit),
4115 cx,
4116 );
4117 self.end_transaction(cx);
4118 }
4119
4120 pub fn select_larger_syntax_node(
4121 &mut self,
4122 _: &SelectLargerSyntaxNode,
4123 cx: &mut ViewContext<Self>,
4124 ) {
4125 let old_selections = self.local_selections::<usize>(cx).into_boxed_slice();
4126 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
4127 let buffer = self.buffer.read(cx).snapshot(cx);
4128
4129 let mut stack = mem::take(&mut self.select_larger_syntax_node_stack);
4130 let mut selected_larger_node = false;
4131 let new_selections = old_selections
4132 .iter()
4133 .map(|selection| {
4134 let old_range = selection.start..selection.end;
4135 let mut new_range = old_range.clone();
4136 while let Some(containing_range) =
4137 buffer.range_for_syntax_ancestor(new_range.clone())
4138 {
4139 new_range = containing_range;
4140 if !display_map.intersects_fold(new_range.start)
4141 && !display_map.intersects_fold(new_range.end)
4142 {
4143 break;
4144 }
4145 }
4146
4147 selected_larger_node |= new_range != old_range;
4148 Selection {
4149 id: selection.id,
4150 start: new_range.start,
4151 end: new_range.end,
4152 goal: SelectionGoal::None,
4153 reversed: selection.reversed,
4154 }
4155 })
4156 .collect::<Vec<_>>();
4157
4158 if selected_larger_node {
4159 stack.push(old_selections);
4160 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
4161 }
4162 self.select_larger_syntax_node_stack = stack;
4163 }
4164
4165 pub fn select_smaller_syntax_node(
4166 &mut self,
4167 _: &SelectSmallerSyntaxNode,
4168 cx: &mut ViewContext<Self>,
4169 ) {
4170 let mut stack = mem::take(&mut self.select_larger_syntax_node_stack);
4171 if let Some(selections) = stack.pop() {
4172 self.update_selections(selections.to_vec(), Some(Autoscroll::Fit), cx);
4173 }
4174 self.select_larger_syntax_node_stack = stack;
4175 }
4176
4177 pub fn move_to_enclosing_bracket(
4178 &mut self,
4179 _: &MoveToEnclosingBracket,
4180 cx: &mut ViewContext<Self>,
4181 ) {
4182 let mut selections = self.local_selections::<usize>(cx);
4183 let buffer = self.buffer.read(cx).snapshot(cx);
4184 for selection in &mut selections {
4185 if let Some((open_range, close_range)) =
4186 buffer.enclosing_bracket_ranges(selection.start..selection.end)
4187 {
4188 let close_range = close_range.to_inclusive();
4189 let destination = if close_range.contains(&selection.start)
4190 && close_range.contains(&selection.end)
4191 {
4192 open_range.end
4193 } else {
4194 *close_range.start()
4195 };
4196 selection.start = destination;
4197 selection.end = destination;
4198 }
4199 }
4200
4201 self.update_selections(selections, Some(Autoscroll::Fit), cx);
4202 }
4203
4204 pub fn go_to_diagnostic(
4205 &mut self,
4206 &GoToDiagnostic(direction): &GoToDiagnostic,
4207 cx: &mut ViewContext<Self>,
4208 ) {
4209 let buffer = self.buffer.read(cx).snapshot(cx);
4210 let selection = self.newest_selection_with_snapshot::<usize>(&buffer);
4211 let mut active_primary_range = self.active_diagnostics.as_ref().map(|active_diagnostics| {
4212 active_diagnostics
4213 .primary_range
4214 .to_offset(&buffer)
4215 .to_inclusive()
4216 });
4217 let mut search_start = if let Some(active_primary_range) = active_primary_range.as_ref() {
4218 if active_primary_range.contains(&selection.head()) {
4219 *active_primary_range.end()
4220 } else {
4221 selection.head()
4222 }
4223 } else {
4224 selection.head()
4225 };
4226
4227 loop {
4228 let mut diagnostics = if direction == Direction::Prev {
4229 buffer.diagnostics_in_range::<_, usize>(0..search_start, true)
4230 } else {
4231 buffer.diagnostics_in_range::<_, usize>(search_start..buffer.len(), false)
4232 };
4233 let group = diagnostics.find_map(|entry| {
4234 if entry.diagnostic.is_primary
4235 && entry.diagnostic.severity <= DiagnosticSeverity::WARNING
4236 && !entry.range.is_empty()
4237 && Some(entry.range.end) != active_primary_range.as_ref().map(|r| *r.end())
4238 {
4239 Some((entry.range, entry.diagnostic.group_id))
4240 } else {
4241 None
4242 }
4243 });
4244
4245 if let Some((primary_range, group_id)) = group {
4246 self.activate_diagnostics(group_id, cx);
4247 self.update_selections(
4248 vec![Selection {
4249 id: selection.id,
4250 start: primary_range.start,
4251 end: primary_range.start,
4252 reversed: false,
4253 goal: SelectionGoal::None,
4254 }],
4255 Some(Autoscroll::Center),
4256 cx,
4257 );
4258 break;
4259 } else {
4260 // Cycle around to the start of the buffer, potentially moving back to the start of
4261 // the currently active diagnostic.
4262 active_primary_range.take();
4263 if direction == Direction::Prev {
4264 if search_start == buffer.len() {
4265 break;
4266 } else {
4267 search_start = buffer.len();
4268 }
4269 } else {
4270 if search_start == 0 {
4271 break;
4272 } else {
4273 search_start = 0;
4274 }
4275 }
4276 }
4277 }
4278 }
4279
4280 pub fn go_to_definition(
4281 workspace: &mut Workspace,
4282 _: &GoToDefinition,
4283 cx: &mut ViewContext<Workspace>,
4284 ) {
4285 let active_item = workspace.active_item(cx);
4286 let editor_handle = if let Some(editor) = active_item
4287 .as_ref()
4288 .and_then(|item| item.act_as::<Self>(cx))
4289 {
4290 editor
4291 } else {
4292 return;
4293 };
4294
4295 let editor = editor_handle.read(cx);
4296 let head = editor.newest_selection::<usize>(cx).head();
4297 let (buffer, head) =
4298 if let Some(text_anchor) = editor.buffer.read(cx).text_anchor_for_position(head, cx) {
4299 text_anchor
4300 } else {
4301 return;
4302 };
4303
4304 let project = workspace.project().clone();
4305 let definitions = project.update(cx, |project, cx| project.definition(&buffer, head, cx));
4306 cx.spawn(|workspace, mut cx| async move {
4307 let definitions = definitions.await?;
4308 workspace.update(&mut cx, |workspace, cx| {
4309 let nav_history = workspace.active_pane().read(cx).nav_history().clone();
4310 for definition in definitions {
4311 let range = definition.range.to_offset(definition.buffer.read(cx));
4312
4313 let target_editor_handle = workspace.open_project_item(definition.buffer, cx);
4314 target_editor_handle.update(cx, |target_editor, cx| {
4315 // When selecting a definition in a different buffer, disable the nav history
4316 // to avoid creating a history entry at the previous cursor location.
4317 if editor_handle != target_editor_handle {
4318 nav_history.borrow_mut().disable();
4319 }
4320 target_editor.select_ranges([range], Some(Autoscroll::Center), cx);
4321 nav_history.borrow_mut().enable();
4322 });
4323 }
4324 });
4325
4326 Ok::<(), anyhow::Error>(())
4327 })
4328 .detach_and_log_err(cx);
4329 }
4330
4331 pub fn find_all_references(
4332 workspace: &mut Workspace,
4333 _: &FindAllReferences,
4334 cx: &mut ViewContext<Workspace>,
4335 ) -> Option<Task<Result<()>>> {
4336 let active_item = workspace.active_item(cx)?;
4337 let editor_handle = active_item.act_as::<Self>(cx)?;
4338
4339 let editor = editor_handle.read(cx);
4340 let head = editor.newest_selection::<usize>(cx).head();
4341 let (buffer, head) = editor.buffer.read(cx).text_anchor_for_position(head, cx)?;
4342 let replica_id = editor.replica_id(cx);
4343
4344 let project = workspace.project().clone();
4345 let references = project.update(cx, |project, cx| project.references(&buffer, head, cx));
4346 Some(cx.spawn(|workspace, mut cx| async move {
4347 let mut locations = references.await?;
4348 if locations.is_empty() {
4349 return Ok(());
4350 }
4351
4352 locations.sort_by_key(|location| location.buffer.id());
4353 let mut locations = locations.into_iter().peekable();
4354 let mut ranges_to_highlight = Vec::new();
4355
4356 let excerpt_buffer = cx.add_model(|cx| {
4357 let mut symbol_name = None;
4358 let mut multibuffer = MultiBuffer::new(replica_id);
4359 while let Some(location) = locations.next() {
4360 let buffer = location.buffer.read(cx);
4361 let mut ranges_for_buffer = Vec::new();
4362 let range = location.range.to_offset(buffer);
4363 ranges_for_buffer.push(range.clone());
4364 if symbol_name.is_none() {
4365 symbol_name = Some(buffer.text_for_range(range).collect::<String>());
4366 }
4367
4368 while let Some(next_location) = locations.peek() {
4369 if next_location.buffer == location.buffer {
4370 ranges_for_buffer.push(next_location.range.to_offset(buffer));
4371 locations.next();
4372 } else {
4373 break;
4374 }
4375 }
4376
4377 ranges_for_buffer.sort_by_key(|range| (range.start, Reverse(range.end)));
4378 ranges_to_highlight.extend(multibuffer.push_excerpts_with_context_lines(
4379 location.buffer.clone(),
4380 ranges_for_buffer,
4381 1,
4382 cx,
4383 ));
4384 }
4385 multibuffer.with_title(format!("References to `{}`", symbol_name.unwrap()))
4386 });
4387
4388 workspace.update(&mut cx, |workspace, cx| {
4389 let editor =
4390 cx.add_view(|cx| Editor::for_multibuffer(excerpt_buffer, Some(project), cx));
4391 editor.update(cx, |editor, cx| {
4392 let color = editor.style(cx).highlighted_line_background;
4393 editor.highlight_background::<Self>(ranges_to_highlight, color, cx);
4394 });
4395 workspace.add_item(Box::new(editor), cx);
4396 });
4397
4398 Ok(())
4399 }))
4400 }
4401
4402 pub fn rename(&mut self, _: &Rename, cx: &mut ViewContext<Self>) -> Option<Task<Result<()>>> {
4403 use language::ToOffset as _;
4404
4405 let project = self.project.clone()?;
4406 let selection = self.newest_anchor_selection().clone();
4407 let (cursor_buffer, cursor_buffer_position) = self
4408 .buffer
4409 .read(cx)
4410 .text_anchor_for_position(selection.head(), cx)?;
4411 let (tail_buffer, _) = self
4412 .buffer
4413 .read(cx)
4414 .text_anchor_for_position(selection.tail(), cx)?;
4415 if tail_buffer != cursor_buffer {
4416 return None;
4417 }
4418
4419 let snapshot = cursor_buffer.read(cx).snapshot();
4420 let cursor_buffer_offset = cursor_buffer_position.to_offset(&snapshot);
4421 let prepare_rename = project.update(cx, |project, cx| {
4422 project.prepare_rename(cursor_buffer, cursor_buffer_offset, cx)
4423 });
4424
4425 Some(cx.spawn(|this, mut cx| async move {
4426 if let Some(rename_range) = prepare_rename.await? {
4427 let rename_buffer_range = rename_range.to_offset(&snapshot);
4428 let cursor_offset_in_rename_range =
4429 cursor_buffer_offset.saturating_sub(rename_buffer_range.start);
4430
4431 this.update(&mut cx, |this, cx| {
4432 this.take_rename(false, cx);
4433 let style = this.style(cx);
4434 let buffer = this.buffer.read(cx).read(cx);
4435 let cursor_offset = selection.head().to_offset(&buffer);
4436 let rename_start = cursor_offset.saturating_sub(cursor_offset_in_rename_range);
4437 let rename_end = rename_start + rename_buffer_range.len();
4438 let range = buffer.anchor_before(rename_start)..buffer.anchor_after(rename_end);
4439 let mut old_highlight_id = None;
4440 let old_name = buffer
4441 .chunks(rename_start..rename_end, true)
4442 .map(|chunk| {
4443 if old_highlight_id.is_none() {
4444 old_highlight_id = chunk.syntax_highlight_id;
4445 }
4446 chunk.text
4447 })
4448 .collect();
4449
4450 drop(buffer);
4451
4452 // Position the selection in the rename editor so that it matches the current selection.
4453 this.show_local_selections = false;
4454 let rename_editor = cx.add_view(|cx| {
4455 let mut editor = Editor::single_line(None, cx);
4456 if let Some(old_highlight_id) = old_highlight_id {
4457 editor.override_text_style =
4458 Some(Box::new(move |style| old_highlight_id.style(&style.syntax)));
4459 }
4460 editor
4461 .buffer
4462 .update(cx, |buffer, cx| buffer.edit([0..0], &old_name, cx));
4463 editor.select_all(&SelectAll, cx);
4464 editor
4465 });
4466
4467 let ranges = this
4468 .clear_background_highlights::<DocumentHighlightWrite>(cx)
4469 .into_iter()
4470 .flat_map(|(_, ranges)| ranges)
4471 .chain(
4472 this.clear_background_highlights::<DocumentHighlightRead>(cx)
4473 .into_iter()
4474 .flat_map(|(_, ranges)| ranges),
4475 )
4476 .collect();
4477 this.highlight_text::<Rename>(
4478 ranges,
4479 HighlightStyle {
4480 fade_out: Some(style.rename_fade),
4481 ..Default::default()
4482 },
4483 cx,
4484 );
4485 cx.focus(&rename_editor);
4486 let block_id = this.insert_blocks(
4487 [BlockProperties {
4488 position: range.start.clone(),
4489 height: 1,
4490 render: Arc::new({
4491 let editor = rename_editor.clone();
4492 move |cx: &BlockContext| {
4493 ChildView::new(editor.clone())
4494 .contained()
4495 .with_padding_left(cx.anchor_x)
4496 .boxed()
4497 }
4498 }),
4499 disposition: BlockDisposition::Below,
4500 }],
4501 cx,
4502 )[0];
4503 this.pending_rename = Some(RenameState {
4504 range,
4505 old_name,
4506 editor: rename_editor,
4507 block_id,
4508 });
4509 });
4510 }
4511
4512 Ok(())
4513 }))
4514 }
4515
4516 pub fn confirm_rename(
4517 workspace: &mut Workspace,
4518 _: &ConfirmRename,
4519 cx: &mut ViewContext<Workspace>,
4520 ) -> Option<Task<Result<()>>> {
4521 let editor = workspace.active_item(cx)?.act_as::<Editor>(cx)?;
4522
4523 let (buffer, range, old_name, new_name) = editor.update(cx, |editor, cx| {
4524 let rename = editor.take_rename(false, cx)?;
4525 let buffer = editor.buffer.read(cx);
4526 let (start_buffer, start) =
4527 buffer.text_anchor_for_position(rename.range.start.clone(), cx)?;
4528 let (end_buffer, end) =
4529 buffer.text_anchor_for_position(rename.range.end.clone(), cx)?;
4530 if start_buffer == end_buffer {
4531 let new_name = rename.editor.read(cx).text(cx);
4532 Some((start_buffer, start..end, rename.old_name, new_name))
4533 } else {
4534 None
4535 }
4536 })?;
4537
4538 let rename = workspace.project().clone().update(cx, |project, cx| {
4539 project.perform_rename(
4540 buffer.clone(),
4541 range.start.clone(),
4542 new_name.clone(),
4543 true,
4544 cx,
4545 )
4546 });
4547
4548 Some(cx.spawn(|workspace, mut cx| async move {
4549 let project_transaction = rename.await?;
4550 Self::open_project_transaction(
4551 editor.clone(),
4552 workspace,
4553 project_transaction,
4554 format!("Rename: {} → {}", old_name, new_name),
4555 cx.clone(),
4556 )
4557 .await?;
4558
4559 editor.update(&mut cx, |editor, cx| {
4560 editor.refresh_document_highlights(cx);
4561 });
4562 Ok(())
4563 }))
4564 }
4565
4566 fn take_rename(
4567 &mut self,
4568 moving_cursor: bool,
4569 cx: &mut ViewContext<Self>,
4570 ) -> Option<RenameState> {
4571 let rename = self.pending_rename.take()?;
4572 self.remove_blocks([rename.block_id].into_iter().collect(), cx);
4573 self.clear_text_highlights::<Rename>(cx);
4574 self.show_local_selections = true;
4575
4576 if moving_cursor {
4577 let cursor_in_rename_editor =
4578 rename.editor.read(cx).newest_selection::<usize>(cx).head();
4579
4580 // Update the selection to match the position of the selection inside
4581 // the rename editor.
4582 let snapshot = self.buffer.read(cx).read(cx);
4583 let rename_range = rename.range.to_offset(&snapshot);
4584 let cursor_in_editor = snapshot
4585 .clip_offset(rename_range.start + cursor_in_rename_editor, Bias::Left)
4586 .min(rename_range.end);
4587 drop(snapshot);
4588
4589 self.update_selections(
4590 vec![Selection {
4591 id: self.newest_anchor_selection().id,
4592 start: cursor_in_editor,
4593 end: cursor_in_editor,
4594 reversed: false,
4595 goal: SelectionGoal::None,
4596 }],
4597 None,
4598 cx,
4599 );
4600 }
4601
4602 Some(rename)
4603 }
4604
4605 fn invalidate_rename_range(
4606 &mut self,
4607 buffer: &MultiBufferSnapshot,
4608 cx: &mut ViewContext<Self>,
4609 ) {
4610 if let Some(rename) = self.pending_rename.as_ref() {
4611 if self.selections.len() == 1 {
4612 let head = self.selections[0].head().to_offset(buffer);
4613 let range = rename.range.to_offset(buffer).to_inclusive();
4614 if range.contains(&head) {
4615 return;
4616 }
4617 }
4618 let rename = self.pending_rename.take().unwrap();
4619 self.remove_blocks([rename.block_id].into_iter().collect(), cx);
4620 self.clear_background_highlights::<Rename>(cx);
4621 }
4622 }
4623
4624 #[cfg(any(test, feature = "test-support"))]
4625 pub fn pending_rename(&self) -> Option<&RenameState> {
4626 self.pending_rename.as_ref()
4627 }
4628
4629 fn refresh_active_diagnostics(&mut self, cx: &mut ViewContext<Editor>) {
4630 if let Some(active_diagnostics) = self.active_diagnostics.as_mut() {
4631 let buffer = self.buffer.read(cx).snapshot(cx);
4632 let primary_range_start = active_diagnostics.primary_range.start.to_offset(&buffer);
4633 let is_valid = buffer
4634 .diagnostics_in_range::<_, usize>(active_diagnostics.primary_range.clone(), false)
4635 .any(|entry| {
4636 entry.diagnostic.is_primary
4637 && !entry.range.is_empty()
4638 && entry.range.start == primary_range_start
4639 && entry.diagnostic.message == active_diagnostics.primary_message
4640 });
4641
4642 if is_valid != active_diagnostics.is_valid {
4643 active_diagnostics.is_valid = is_valid;
4644 let mut new_styles = HashMap::default();
4645 for (block_id, diagnostic) in &active_diagnostics.blocks {
4646 new_styles.insert(
4647 *block_id,
4648 diagnostic_block_renderer(diagnostic.clone(), is_valid),
4649 );
4650 }
4651 self.display_map
4652 .update(cx, |display_map, _| display_map.replace_blocks(new_styles));
4653 }
4654 }
4655 }
4656
4657 fn activate_diagnostics(&mut self, group_id: usize, cx: &mut ViewContext<Self>) {
4658 self.dismiss_diagnostics(cx);
4659 self.active_diagnostics = self.display_map.update(cx, |display_map, cx| {
4660 let buffer = self.buffer.read(cx).snapshot(cx);
4661
4662 let mut primary_range = None;
4663 let mut primary_message = None;
4664 let mut group_end = Point::zero();
4665 let diagnostic_group = buffer
4666 .diagnostic_group::<Point>(group_id)
4667 .map(|entry| {
4668 if entry.range.end > group_end {
4669 group_end = entry.range.end;
4670 }
4671 if entry.diagnostic.is_primary {
4672 primary_range = Some(entry.range.clone());
4673 primary_message = Some(entry.diagnostic.message.clone());
4674 }
4675 entry
4676 })
4677 .collect::<Vec<_>>();
4678 let primary_range = primary_range.unwrap();
4679 let primary_message = primary_message.unwrap();
4680 let primary_range =
4681 buffer.anchor_after(primary_range.start)..buffer.anchor_before(primary_range.end);
4682
4683 let blocks = display_map
4684 .insert_blocks(
4685 diagnostic_group.iter().map(|entry| {
4686 let diagnostic = entry.diagnostic.clone();
4687 let message_height = diagnostic.message.lines().count() as u8;
4688 BlockProperties {
4689 position: buffer.anchor_after(entry.range.start),
4690 height: message_height,
4691 render: diagnostic_block_renderer(diagnostic, true),
4692 disposition: BlockDisposition::Below,
4693 }
4694 }),
4695 cx,
4696 )
4697 .into_iter()
4698 .zip(diagnostic_group.into_iter().map(|entry| entry.diagnostic))
4699 .collect();
4700
4701 Some(ActiveDiagnosticGroup {
4702 primary_range,
4703 primary_message,
4704 blocks,
4705 is_valid: true,
4706 })
4707 });
4708 }
4709
4710 fn dismiss_diagnostics(&mut self, cx: &mut ViewContext<Self>) {
4711 if let Some(active_diagnostic_group) = self.active_diagnostics.take() {
4712 self.display_map.update(cx, |display_map, cx| {
4713 display_map.remove_blocks(active_diagnostic_group.blocks.into_keys().collect(), cx);
4714 });
4715 cx.notify();
4716 }
4717 }
4718
4719 fn build_columnar_selection(
4720 &mut self,
4721 display_map: &DisplaySnapshot,
4722 row: u32,
4723 columns: &Range<u32>,
4724 reversed: bool,
4725 ) -> Option<Selection<Point>> {
4726 let is_empty = columns.start == columns.end;
4727 let line_len = display_map.line_len(row);
4728 if columns.start < line_len || (is_empty && columns.start == line_len) {
4729 let start = DisplayPoint::new(row, columns.start);
4730 let end = DisplayPoint::new(row, cmp::min(columns.end, line_len));
4731 Some(Selection {
4732 id: post_inc(&mut self.next_selection_id),
4733 start: start.to_point(display_map),
4734 end: end.to_point(display_map),
4735 reversed,
4736 goal: SelectionGoal::ColumnRange {
4737 start: columns.start,
4738 end: columns.end,
4739 },
4740 })
4741 } else {
4742 None
4743 }
4744 }
4745
4746 pub fn local_selections_in_range(
4747 &self,
4748 range: Range<Anchor>,
4749 display_map: &DisplaySnapshot,
4750 ) -> Vec<Selection<Point>> {
4751 let buffer = &display_map.buffer_snapshot;
4752
4753 let start_ix = match self
4754 .selections
4755 .binary_search_by(|probe| probe.end.cmp(&range.start, &buffer).unwrap())
4756 {
4757 Ok(ix) | Err(ix) => ix,
4758 };
4759 let end_ix = match self
4760 .selections
4761 .binary_search_by(|probe| probe.start.cmp(&range.end, &buffer).unwrap())
4762 {
4763 Ok(ix) => ix + 1,
4764 Err(ix) => ix,
4765 };
4766
4767 fn point_selection(
4768 selection: &Selection<Anchor>,
4769 buffer: &MultiBufferSnapshot,
4770 ) -> Selection<Point> {
4771 let start = selection.start.to_point(&buffer);
4772 let end = selection.end.to_point(&buffer);
4773 Selection {
4774 id: selection.id,
4775 start,
4776 end,
4777 reversed: selection.reversed,
4778 goal: selection.goal,
4779 }
4780 }
4781
4782 self.selections[start_ix..end_ix]
4783 .iter()
4784 .chain(
4785 self.pending_selection
4786 .as_ref()
4787 .map(|pending| &pending.selection),
4788 )
4789 .map(|s| point_selection(s, &buffer))
4790 .collect()
4791 }
4792
4793 pub fn local_selections<'a, D>(&self, cx: &'a AppContext) -> Vec<Selection<D>>
4794 where
4795 D: 'a + TextDimension + Ord + Sub<D, Output = D>,
4796 {
4797 let buffer = self.buffer.read(cx).snapshot(cx);
4798 let mut selections = self
4799 .resolve_selections::<D, _>(self.selections.iter(), &buffer)
4800 .peekable();
4801
4802 let mut pending_selection = self.pending_selection::<D>(&buffer);
4803
4804 iter::from_fn(move || {
4805 if let Some(pending) = pending_selection.as_mut() {
4806 while let Some(next_selection) = selections.peek() {
4807 if pending.start <= next_selection.end && pending.end >= next_selection.start {
4808 let next_selection = selections.next().unwrap();
4809 if next_selection.start < pending.start {
4810 pending.start = next_selection.start;
4811 }
4812 if next_selection.end > pending.end {
4813 pending.end = next_selection.end;
4814 }
4815 } else if next_selection.end < pending.start {
4816 return selections.next();
4817 } else {
4818 break;
4819 }
4820 }
4821
4822 pending_selection.take()
4823 } else {
4824 selections.next()
4825 }
4826 })
4827 .collect()
4828 }
4829
4830 fn resolve_selections<'a, D, I>(
4831 &self,
4832 selections: I,
4833 snapshot: &MultiBufferSnapshot,
4834 ) -> impl 'a + Iterator<Item = Selection<D>>
4835 where
4836 D: TextDimension + Ord + Sub<D, Output = D>,
4837 I: 'a + IntoIterator<Item = &'a Selection<Anchor>>,
4838 {
4839 let (to_summarize, selections) = selections.into_iter().tee();
4840 let mut summaries = snapshot
4841 .summaries_for_anchors::<D, _>(to_summarize.flat_map(|s| [&s.start, &s.end]))
4842 .into_iter();
4843 selections.map(move |s| Selection {
4844 id: s.id,
4845 start: summaries.next().unwrap(),
4846 end: summaries.next().unwrap(),
4847 reversed: s.reversed,
4848 goal: s.goal,
4849 })
4850 }
4851
4852 fn pending_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
4853 &self,
4854 snapshot: &MultiBufferSnapshot,
4855 ) -> Option<Selection<D>> {
4856 self.pending_selection
4857 .as_ref()
4858 .map(|pending| self.resolve_selection(&pending.selection, &snapshot))
4859 }
4860
4861 fn resolve_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
4862 &self,
4863 selection: &Selection<Anchor>,
4864 buffer: &MultiBufferSnapshot,
4865 ) -> Selection<D> {
4866 Selection {
4867 id: selection.id,
4868 start: selection.start.summary::<D>(&buffer),
4869 end: selection.end.summary::<D>(&buffer),
4870 reversed: selection.reversed,
4871 goal: selection.goal,
4872 }
4873 }
4874
4875 fn selection_count<'a>(&self) -> usize {
4876 let mut count = self.selections.len();
4877 if self.pending_selection.is_some() {
4878 count += 1;
4879 }
4880 count
4881 }
4882
4883 pub fn oldest_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
4884 &self,
4885 cx: &AppContext,
4886 ) -> Selection<D> {
4887 let snapshot = self.buffer.read(cx).read(cx);
4888 self.selections
4889 .iter()
4890 .min_by_key(|s| s.id)
4891 .map(|selection| self.resolve_selection(selection, &snapshot))
4892 .or_else(|| self.pending_selection(&snapshot))
4893 .unwrap()
4894 }
4895
4896 pub fn newest_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
4897 &self,
4898 cx: &AppContext,
4899 ) -> Selection<D> {
4900 self.resolve_selection(
4901 self.newest_anchor_selection(),
4902 &self.buffer.read(cx).read(cx),
4903 )
4904 }
4905
4906 pub fn newest_selection_with_snapshot<D: TextDimension + Ord + Sub<D, Output = D>>(
4907 &self,
4908 snapshot: &MultiBufferSnapshot,
4909 ) -> Selection<D> {
4910 self.resolve_selection(self.newest_anchor_selection(), snapshot)
4911 }
4912
4913 pub fn newest_anchor_selection(&self) -> &Selection<Anchor> {
4914 self.pending_selection
4915 .as_ref()
4916 .map(|s| &s.selection)
4917 .or_else(|| self.selections.iter().max_by_key(|s| s.id))
4918 .unwrap()
4919 }
4920
4921 pub fn update_selections<T>(
4922 &mut self,
4923 mut selections: Vec<Selection<T>>,
4924 autoscroll: Option<Autoscroll>,
4925 cx: &mut ViewContext<Self>,
4926 ) where
4927 T: ToOffset + ToPoint + Ord + std::marker::Copy + std::fmt::Debug,
4928 {
4929 let buffer = self.buffer.read(cx).snapshot(cx);
4930 selections.sort_unstable_by_key(|s| s.start);
4931
4932 // Merge overlapping selections.
4933 let mut i = 1;
4934 while i < selections.len() {
4935 if selections[i - 1].end >= selections[i].start {
4936 let removed = selections.remove(i);
4937 if removed.start < selections[i - 1].start {
4938 selections[i - 1].start = removed.start;
4939 }
4940 if removed.end > selections[i - 1].end {
4941 selections[i - 1].end = removed.end;
4942 }
4943 } else {
4944 i += 1;
4945 }
4946 }
4947
4948 if let Some(autoscroll) = autoscroll {
4949 self.request_autoscroll(autoscroll, cx);
4950 }
4951
4952 self.set_selections(
4953 Arc::from_iter(selections.into_iter().map(|selection| {
4954 let end_bias = if selection.end > selection.start {
4955 Bias::Left
4956 } else {
4957 Bias::Right
4958 };
4959 Selection {
4960 id: selection.id,
4961 start: buffer.anchor_after(selection.start),
4962 end: buffer.anchor_at(selection.end, end_bias),
4963 reversed: selection.reversed,
4964 goal: selection.goal,
4965 }
4966 })),
4967 None,
4968 cx,
4969 );
4970 }
4971
4972 /// Compute new ranges for any selections that were located in excerpts that have
4973 /// since been removed.
4974 ///
4975 /// Returns a `HashMap` indicating which selections whose former head position
4976 /// was no longer present. The keys of the map are selection ids. The values are
4977 /// the id of the new excerpt where the head of the selection has been moved.
4978 pub fn refresh_selections(&mut self, cx: &mut ViewContext<Self>) -> HashMap<usize, ExcerptId> {
4979 let snapshot = self.buffer.read(cx).read(cx);
4980 let anchors_with_status = snapshot.refresh_anchors(
4981 self.selections
4982 .iter()
4983 .flat_map(|selection| [&selection.start, &selection.end]),
4984 );
4985 let offsets =
4986 snapshot.summaries_for_anchors::<usize, _>(anchors_with_status.iter().map(|a| &a.1));
4987 assert_eq!(anchors_with_status.len(), 2 * self.selections.len());
4988 assert_eq!(offsets.len(), anchors_with_status.len());
4989
4990 let offsets = offsets.chunks(2);
4991 let statuses = anchors_with_status
4992 .chunks(2)
4993 .map(|a| (a[0].0 / 2, a[0].2, a[1].2));
4994
4995 let mut selections_with_lost_position = HashMap::default();
4996 let new_selections = offsets
4997 .zip(statuses)
4998 .map(|(offsets, (selection_ix, kept_start, kept_end))| {
4999 let selection = &self.selections[selection_ix];
5000 let kept_head = if selection.reversed {
5001 kept_start
5002 } else {
5003 kept_end
5004 };
5005 if !kept_head {
5006 selections_with_lost_position
5007 .insert(selection.id, selection.head().excerpt_id.clone());
5008 }
5009
5010 Selection {
5011 id: selection.id,
5012 start: offsets[0],
5013 end: offsets[1],
5014 reversed: selection.reversed,
5015 goal: selection.goal,
5016 }
5017 })
5018 .collect();
5019 drop(snapshot);
5020 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
5021 selections_with_lost_position
5022 }
5023
5024 fn set_selections(
5025 &mut self,
5026 selections: Arc<[Selection<Anchor>]>,
5027 pending_selection: Option<PendingSelection>,
5028 cx: &mut ViewContext<Self>,
5029 ) {
5030 assert!(
5031 !selections.is_empty() || pending_selection.is_some(),
5032 "must have at least one selection"
5033 );
5034
5035 let old_cursor_position = self.newest_anchor_selection().head();
5036
5037 self.selections = selections;
5038 self.pending_selection = pending_selection;
5039 if self.focused {
5040 self.buffer.update(cx, |buffer, cx| {
5041 buffer.set_active_selections(&self.selections, cx)
5042 });
5043 }
5044
5045 let display_map = self
5046 .display_map
5047 .update(cx, |display_map, cx| display_map.snapshot(cx));
5048 let buffer = &display_map.buffer_snapshot;
5049 self.add_selections_state = None;
5050 self.select_next_state = None;
5051 self.select_larger_syntax_node_stack.clear();
5052 self.autoclose_stack.invalidate(&self.selections, &buffer);
5053 self.snippet_stack.invalidate(&self.selections, &buffer);
5054 self.invalidate_rename_range(&buffer, cx);
5055
5056 let new_cursor_position = self.newest_anchor_selection().head();
5057
5058 self.push_to_nav_history(
5059 old_cursor_position.clone(),
5060 Some(new_cursor_position.to_point(&buffer)),
5061 cx,
5062 );
5063
5064 let completion_menu = match self.context_menu.as_mut() {
5065 Some(ContextMenu::Completions(menu)) => Some(menu),
5066 _ => {
5067 self.context_menu.take();
5068 None
5069 }
5070 };
5071
5072 if let Some(completion_menu) = completion_menu {
5073 let cursor_position = new_cursor_position.to_offset(&buffer);
5074 let (word_range, kind) =
5075 buffer.surrounding_word(completion_menu.initial_position.clone());
5076 if kind == Some(CharKind::Word) && word_range.to_inclusive().contains(&cursor_position)
5077 {
5078 let query = Self::completion_query(&buffer, cursor_position);
5079 cx.background()
5080 .block(completion_menu.filter(query.as_deref(), cx.background().clone()));
5081 self.show_completions(&ShowCompletions, cx);
5082 } else {
5083 self.hide_context_menu(cx);
5084 }
5085 }
5086
5087 if old_cursor_position.to_display_point(&display_map).row()
5088 != new_cursor_position.to_display_point(&display_map).row()
5089 {
5090 self.available_code_actions.take();
5091 }
5092 self.refresh_code_actions(cx);
5093 self.refresh_document_highlights(cx);
5094
5095 self.pause_cursor_blinking(cx);
5096 cx.emit(Event::SelectionsChanged);
5097 }
5098
5099 pub fn request_autoscroll(&mut self, autoscroll: Autoscroll, cx: &mut ViewContext<Self>) {
5100 self.autoscroll_request = Some(autoscroll);
5101 cx.notify();
5102 }
5103
5104 fn start_transaction(&mut self, cx: &mut ViewContext<Self>) {
5105 self.start_transaction_at(Instant::now(), cx);
5106 }
5107
5108 fn start_transaction_at(&mut self, now: Instant, cx: &mut ViewContext<Self>) {
5109 self.end_selection(cx);
5110 if let Some(tx_id) = self
5111 .buffer
5112 .update(cx, |buffer, cx| buffer.start_transaction_at(now, cx))
5113 {
5114 self.selection_history
5115 .insert(tx_id, (self.selections.clone(), None));
5116 }
5117 }
5118
5119 fn end_transaction(&mut self, cx: &mut ViewContext<Self>) {
5120 self.end_transaction_at(Instant::now(), cx);
5121 }
5122
5123 fn end_transaction_at(&mut self, now: Instant, cx: &mut ViewContext<Self>) {
5124 if let Some(tx_id) = self
5125 .buffer
5126 .update(cx, |buffer, cx| buffer.end_transaction_at(now, cx))
5127 {
5128 if let Some((_, end_selections)) = self.selection_history.get_mut(&tx_id) {
5129 *end_selections = Some(self.selections.clone());
5130 } else {
5131 log::error!("unexpectedly ended a transaction that wasn't started by this editor");
5132 }
5133 }
5134 }
5135
5136 pub fn page_up(&mut self, _: &PageUp, _: &mut ViewContext<Self>) {
5137 log::info!("Editor::page_up");
5138 }
5139
5140 pub fn page_down(&mut self, _: &PageDown, _: &mut ViewContext<Self>) {
5141 log::info!("Editor::page_down");
5142 }
5143
5144 pub fn fold(&mut self, _: &Fold, cx: &mut ViewContext<Self>) {
5145 let mut fold_ranges = Vec::new();
5146
5147 let selections = self.local_selections::<Point>(cx);
5148 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
5149 for selection in selections {
5150 let range = selection.display_range(&display_map).sorted();
5151 let buffer_start_row = range.start.to_point(&display_map).row;
5152
5153 for row in (0..=range.end.row()).rev() {
5154 if self.is_line_foldable(&display_map, row) && !display_map.is_line_folded(row) {
5155 let fold_range = self.foldable_range_for_line(&display_map, row);
5156 if fold_range.end.row >= buffer_start_row {
5157 fold_ranges.push(fold_range);
5158 if row <= range.start.row() {
5159 break;
5160 }
5161 }
5162 }
5163 }
5164 }
5165
5166 self.fold_ranges(fold_ranges, cx);
5167 }
5168
5169 pub fn unfold(&mut self, _: &Unfold, cx: &mut ViewContext<Self>) {
5170 let selections = self.local_selections::<Point>(cx);
5171 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
5172 let buffer = &display_map.buffer_snapshot;
5173 let ranges = selections
5174 .iter()
5175 .map(|s| {
5176 let range = s.display_range(&display_map).sorted();
5177 let mut start = range.start.to_point(&display_map);
5178 let mut end = range.end.to_point(&display_map);
5179 start.column = 0;
5180 end.column = buffer.line_len(end.row);
5181 start..end
5182 })
5183 .collect::<Vec<_>>();
5184 self.unfold_ranges(ranges, cx);
5185 }
5186
5187 fn is_line_foldable(&self, display_map: &DisplaySnapshot, display_row: u32) -> bool {
5188 let max_point = display_map.max_point();
5189 if display_row >= max_point.row() {
5190 false
5191 } else {
5192 let (start_indent, is_blank) = display_map.line_indent(display_row);
5193 if is_blank {
5194 false
5195 } else {
5196 for display_row in display_row + 1..=max_point.row() {
5197 let (indent, is_blank) = display_map.line_indent(display_row);
5198 if !is_blank {
5199 return indent > start_indent;
5200 }
5201 }
5202 false
5203 }
5204 }
5205 }
5206
5207 fn foldable_range_for_line(
5208 &self,
5209 display_map: &DisplaySnapshot,
5210 start_row: u32,
5211 ) -> Range<Point> {
5212 let max_point = display_map.max_point();
5213
5214 let (start_indent, _) = display_map.line_indent(start_row);
5215 let start = DisplayPoint::new(start_row, display_map.line_len(start_row));
5216 let mut end = None;
5217 for row in start_row + 1..=max_point.row() {
5218 let (indent, is_blank) = display_map.line_indent(row);
5219 if !is_blank && indent <= start_indent {
5220 end = Some(DisplayPoint::new(row - 1, display_map.line_len(row - 1)));
5221 break;
5222 }
5223 }
5224
5225 let end = end.unwrap_or(max_point);
5226 return start.to_point(display_map)..end.to_point(display_map);
5227 }
5228
5229 pub fn fold_selected_ranges(&mut self, _: &FoldSelectedRanges, cx: &mut ViewContext<Self>) {
5230 let selections = self.local_selections::<Point>(cx);
5231 let ranges = selections.into_iter().map(|s| s.start..s.end);
5232 self.fold_ranges(ranges, cx);
5233 }
5234
5235 fn fold_ranges<T: ToOffset>(
5236 &mut self,
5237 ranges: impl IntoIterator<Item = Range<T>>,
5238 cx: &mut ViewContext<Self>,
5239 ) {
5240 let mut ranges = ranges.into_iter().peekable();
5241 if ranges.peek().is_some() {
5242 self.display_map.update(cx, |map, cx| map.fold(ranges, cx));
5243 self.request_autoscroll(Autoscroll::Fit, cx);
5244 cx.notify();
5245 }
5246 }
5247
5248 fn unfold_ranges<T: ToOffset>(&mut self, ranges: Vec<Range<T>>, cx: &mut ViewContext<Self>) {
5249 if !ranges.is_empty() {
5250 self.display_map
5251 .update(cx, |map, cx| map.unfold(ranges, cx));
5252 self.request_autoscroll(Autoscroll::Fit, cx);
5253 cx.notify();
5254 }
5255 }
5256
5257 pub fn insert_blocks(
5258 &mut self,
5259 blocks: impl IntoIterator<Item = BlockProperties<Anchor>>,
5260 cx: &mut ViewContext<Self>,
5261 ) -> Vec<BlockId> {
5262 let blocks = self
5263 .display_map
5264 .update(cx, |display_map, cx| display_map.insert_blocks(blocks, cx));
5265 self.request_autoscroll(Autoscroll::Fit, cx);
5266 blocks
5267 }
5268
5269 pub fn replace_blocks(
5270 &mut self,
5271 blocks: HashMap<BlockId, RenderBlock>,
5272 cx: &mut ViewContext<Self>,
5273 ) {
5274 self.display_map
5275 .update(cx, |display_map, _| display_map.replace_blocks(blocks));
5276 self.request_autoscroll(Autoscroll::Fit, cx);
5277 }
5278
5279 pub fn remove_blocks(&mut self, block_ids: HashSet<BlockId>, cx: &mut ViewContext<Self>) {
5280 self.display_map.update(cx, |display_map, cx| {
5281 display_map.remove_blocks(block_ids, cx)
5282 });
5283 }
5284
5285 pub fn longest_row(&self, cx: &mut MutableAppContext) -> u32 {
5286 self.display_map
5287 .update(cx, |map, cx| map.snapshot(cx))
5288 .longest_row()
5289 }
5290
5291 pub fn max_point(&self, cx: &mut MutableAppContext) -> DisplayPoint {
5292 self.display_map
5293 .update(cx, |map, cx| map.snapshot(cx))
5294 .max_point()
5295 }
5296
5297 pub fn text(&self, cx: &AppContext) -> String {
5298 self.buffer.read(cx).read(cx).text()
5299 }
5300
5301 pub fn set_text(&mut self, text: impl Into<String>, cx: &mut ViewContext<Self>) {
5302 self.buffer
5303 .read(cx)
5304 .as_singleton()
5305 .expect("you can only call set_text on editors for singleton buffers")
5306 .update(cx, |buffer, cx| buffer.set_text(text, cx));
5307 }
5308
5309 pub fn display_text(&self, cx: &mut MutableAppContext) -> String {
5310 self.display_map
5311 .update(cx, |map, cx| map.snapshot(cx))
5312 .text()
5313 }
5314
5315 pub fn soft_wrap_mode(&self, cx: &AppContext) -> SoftWrap {
5316 let language = self.language(cx);
5317 let settings = cx.global::<Settings>();
5318 let mode = self
5319 .soft_wrap_mode_override
5320 .unwrap_or_else(|| settings.soft_wrap(language));
5321 match mode {
5322 settings::SoftWrap::None => SoftWrap::None,
5323 settings::SoftWrap::EditorWidth => SoftWrap::EditorWidth,
5324 settings::SoftWrap::PreferredLineLength => {
5325 SoftWrap::Column(settings.preferred_line_length(language))
5326 }
5327 }
5328 }
5329
5330 pub fn set_soft_wrap_mode(&mut self, mode: settings::SoftWrap, cx: &mut ViewContext<Self>) {
5331 self.soft_wrap_mode_override = Some(mode);
5332 cx.notify();
5333 }
5334
5335 pub fn set_wrap_width(&self, width: Option<f32>, cx: &mut MutableAppContext) -> bool {
5336 self.display_map
5337 .update(cx, |map, cx| map.set_wrap_width(width, cx))
5338 }
5339
5340 pub fn highlight_rows(&mut self, rows: Option<Range<u32>>) {
5341 self.highlighted_rows = rows;
5342 }
5343
5344 pub fn highlighted_rows(&self) -> Option<Range<u32>> {
5345 self.highlighted_rows.clone()
5346 }
5347
5348 pub fn highlight_background<T: 'static>(
5349 &mut self,
5350 ranges: Vec<Range<Anchor>>,
5351 color: Color,
5352 cx: &mut ViewContext<Self>,
5353 ) {
5354 self.background_highlights
5355 .insert(TypeId::of::<T>(), (color, ranges));
5356 cx.notify();
5357 }
5358
5359 pub fn clear_background_highlights<T: 'static>(
5360 &mut self,
5361 cx: &mut ViewContext<Self>,
5362 ) -> Option<(Color, Vec<Range<Anchor>>)> {
5363 cx.notify();
5364 self.background_highlights.remove(&TypeId::of::<T>())
5365 }
5366
5367 #[cfg(feature = "test-support")]
5368 pub fn all_background_highlights(
5369 &mut self,
5370 cx: &mut ViewContext<Self>,
5371 ) -> Vec<(Range<DisplayPoint>, Color)> {
5372 let snapshot = self.snapshot(cx);
5373 let buffer = &snapshot.buffer_snapshot;
5374 let start = buffer.anchor_before(0);
5375 let end = buffer.anchor_after(buffer.len());
5376 self.background_highlights_in_range(start..end, &snapshot)
5377 }
5378
5379 pub fn background_highlights_for_type<T: 'static>(&self) -> Option<(Color, &[Range<Anchor>])> {
5380 self.background_highlights
5381 .get(&TypeId::of::<T>())
5382 .map(|(color, ranges)| (*color, ranges.as_slice()))
5383 }
5384
5385 pub fn background_highlights_in_range(
5386 &self,
5387 search_range: Range<Anchor>,
5388 display_snapshot: &DisplaySnapshot,
5389 ) -> Vec<(Range<DisplayPoint>, Color)> {
5390 let mut results = Vec::new();
5391 let buffer = &display_snapshot.buffer_snapshot;
5392 for (color, ranges) in self.background_highlights.values() {
5393 let start_ix = match ranges.binary_search_by(|probe| {
5394 let cmp = probe.end.cmp(&search_range.start, &buffer).unwrap();
5395 if cmp.is_gt() {
5396 Ordering::Greater
5397 } else {
5398 Ordering::Less
5399 }
5400 }) {
5401 Ok(i) | Err(i) => i,
5402 };
5403 for range in &ranges[start_ix..] {
5404 if range.start.cmp(&search_range.end, &buffer).unwrap().is_ge() {
5405 break;
5406 }
5407 let start = range
5408 .start
5409 .to_point(buffer)
5410 .to_display_point(display_snapshot);
5411 let end = range
5412 .end
5413 .to_point(buffer)
5414 .to_display_point(display_snapshot);
5415 results.push((start..end, *color))
5416 }
5417 }
5418 results
5419 }
5420
5421 pub fn highlight_text<T: 'static>(
5422 &mut self,
5423 ranges: Vec<Range<Anchor>>,
5424 style: HighlightStyle,
5425 cx: &mut ViewContext<Self>,
5426 ) {
5427 self.display_map.update(cx, |map, _| {
5428 map.highlight_text(TypeId::of::<T>(), ranges, style)
5429 });
5430 cx.notify();
5431 }
5432
5433 pub fn clear_text_highlights<T: 'static>(
5434 &mut self,
5435 cx: &mut ViewContext<Self>,
5436 ) -> Option<Arc<(HighlightStyle, Vec<Range<Anchor>>)>> {
5437 cx.notify();
5438 self.display_map
5439 .update(cx, |map, _| map.clear_text_highlights(TypeId::of::<T>()))
5440 }
5441
5442 fn next_blink_epoch(&mut self) -> usize {
5443 self.blink_epoch += 1;
5444 self.blink_epoch
5445 }
5446
5447 fn pause_cursor_blinking(&mut self, cx: &mut ViewContext<Self>) {
5448 if !self.focused {
5449 return;
5450 }
5451
5452 self.show_local_cursors = true;
5453 cx.notify();
5454
5455 let epoch = self.next_blink_epoch();
5456 cx.spawn(|this, mut cx| {
5457 let this = this.downgrade();
5458 async move {
5459 Timer::after(CURSOR_BLINK_INTERVAL).await;
5460 if let Some(this) = this.upgrade(&cx) {
5461 this.update(&mut cx, |this, cx| this.resume_cursor_blinking(epoch, cx))
5462 }
5463 }
5464 })
5465 .detach();
5466 }
5467
5468 fn resume_cursor_blinking(&mut self, epoch: usize, cx: &mut ViewContext<Self>) {
5469 if epoch == self.blink_epoch {
5470 self.blinking_paused = false;
5471 self.blink_cursors(epoch, cx);
5472 }
5473 }
5474
5475 fn blink_cursors(&mut self, epoch: usize, cx: &mut ViewContext<Self>) {
5476 if epoch == self.blink_epoch && self.focused && !self.blinking_paused {
5477 self.show_local_cursors = !self.show_local_cursors;
5478 cx.notify();
5479
5480 let epoch = self.next_blink_epoch();
5481 cx.spawn(|this, mut cx| {
5482 let this = this.downgrade();
5483 async move {
5484 Timer::after(CURSOR_BLINK_INTERVAL).await;
5485 if let Some(this) = this.upgrade(&cx) {
5486 this.update(&mut cx, |this, cx| this.blink_cursors(epoch, cx));
5487 }
5488 }
5489 })
5490 .detach();
5491 }
5492 }
5493
5494 pub fn show_local_cursors(&self) -> bool {
5495 self.show_local_cursors
5496 }
5497
5498 fn on_buffer_changed(&mut self, _: ModelHandle<MultiBuffer>, cx: &mut ViewContext<Self>) {
5499 cx.notify();
5500 }
5501
5502 fn on_buffer_event(
5503 &mut self,
5504 _: ModelHandle<MultiBuffer>,
5505 event: &language::Event,
5506 cx: &mut ViewContext<Self>,
5507 ) {
5508 match event {
5509 language::Event::Edited => {
5510 self.refresh_active_diagnostics(cx);
5511 self.refresh_code_actions(cx);
5512 cx.emit(Event::Edited);
5513 }
5514 language::Event::Dirtied => cx.emit(Event::Dirtied),
5515 language::Event::Saved => cx.emit(Event::Saved),
5516 language::Event::FileHandleChanged => cx.emit(Event::TitleChanged),
5517 language::Event::Reloaded => cx.emit(Event::TitleChanged),
5518 language::Event::Closed => cx.emit(Event::Closed),
5519 language::Event::DiagnosticsUpdated => {
5520 self.refresh_active_diagnostics(cx);
5521 }
5522 _ => {}
5523 }
5524 }
5525
5526 fn on_display_map_changed(&mut self, _: ModelHandle<DisplayMap>, cx: &mut ViewContext<Self>) {
5527 cx.notify();
5528 }
5529
5530 pub fn set_searchable(&mut self, searchable: bool) {
5531 self.searchable = searchable;
5532 }
5533
5534 pub fn searchable(&self) -> bool {
5535 self.searchable
5536 }
5537
5538 fn open_excerpts(workspace: &mut Workspace, _: &OpenExcerpts, cx: &mut ViewContext<Workspace>) {
5539 let active_item = workspace.active_item(cx);
5540 let editor_handle = if let Some(editor) = active_item
5541 .as_ref()
5542 .and_then(|item| item.act_as::<Self>(cx))
5543 {
5544 editor
5545 } else {
5546 cx.propagate_action();
5547 return;
5548 };
5549
5550 let editor = editor_handle.read(cx);
5551 let buffer = editor.buffer.read(cx);
5552 if buffer.is_singleton() {
5553 cx.propagate_action();
5554 return;
5555 }
5556
5557 let mut new_selections_by_buffer = HashMap::default();
5558 for selection in editor.local_selections::<usize>(cx) {
5559 for (buffer, mut range) in
5560 buffer.range_to_buffer_ranges(selection.start..selection.end, cx)
5561 {
5562 if selection.reversed {
5563 mem::swap(&mut range.start, &mut range.end);
5564 }
5565 new_selections_by_buffer
5566 .entry(buffer)
5567 .or_insert(Vec::new())
5568 .push(range)
5569 }
5570 }
5571
5572 editor_handle.update(cx, |editor, cx| {
5573 editor.push_to_nav_history(editor.newest_anchor_selection().head(), None, cx);
5574 });
5575 let nav_history = workspace.active_pane().read(cx).nav_history().clone();
5576 nav_history.borrow_mut().disable();
5577
5578 // We defer the pane interaction because we ourselves are a workspace item
5579 // and activating a new item causes the pane to call a method on us reentrantly,
5580 // which panics if we're on the stack.
5581 cx.defer(move |workspace, cx| {
5582 workspace.activate_next_pane(cx);
5583
5584 for (buffer, ranges) in new_selections_by_buffer.into_iter() {
5585 let editor = workspace.open_project_item::<Self>(buffer, cx);
5586 editor.update(cx, |editor, cx| {
5587 editor.select_ranges(ranges, Some(Autoscroll::Newest), cx);
5588 });
5589 }
5590
5591 nav_history.borrow_mut().enable();
5592 });
5593 }
5594}
5595
5596impl EditorSnapshot {
5597 pub fn is_focused(&self) -> bool {
5598 self.is_focused
5599 }
5600
5601 pub fn placeholder_text(&self) -> Option<&Arc<str>> {
5602 self.placeholder_text.as_ref()
5603 }
5604
5605 pub fn scroll_position(&self) -> Vector2F {
5606 compute_scroll_position(
5607 &self.display_snapshot,
5608 self.scroll_position,
5609 &self.scroll_top_anchor,
5610 )
5611 }
5612}
5613
5614impl Deref for EditorSnapshot {
5615 type Target = DisplaySnapshot;
5616
5617 fn deref(&self) -> &Self::Target {
5618 &self.display_snapshot
5619 }
5620}
5621
5622fn compute_scroll_position(
5623 snapshot: &DisplaySnapshot,
5624 mut scroll_position: Vector2F,
5625 scroll_top_anchor: &Option<Anchor>,
5626) -> Vector2F {
5627 if let Some(anchor) = scroll_top_anchor {
5628 let scroll_top = anchor.to_display_point(snapshot).row() as f32;
5629 scroll_position.set_y(scroll_top + scroll_position.y());
5630 } else {
5631 scroll_position.set_y(0.);
5632 }
5633 scroll_position
5634}
5635
5636#[derive(Copy, Clone)]
5637pub enum Event {
5638 Activate,
5639 Edited,
5640 Blurred,
5641 Dirtied,
5642 Saved,
5643 TitleChanged,
5644 SelectionsChanged,
5645 ScrollPositionChanged,
5646 Closed,
5647}
5648
5649impl Entity for Editor {
5650 type Event = Event;
5651}
5652
5653impl View for Editor {
5654 fn render(&mut self, cx: &mut RenderContext<Self>) -> ElementBox {
5655 let style = self.style(cx);
5656 self.display_map.update(cx, |map, cx| {
5657 map.set_font(style.text.font_id, style.text.font_size, cx)
5658 });
5659 EditorElement::new(self.handle.clone(), style.clone(), self.cursor_shape).boxed()
5660 }
5661
5662 fn ui_name() -> &'static str {
5663 "Editor"
5664 }
5665
5666 fn on_focus(&mut self, cx: &mut ViewContext<Self>) {
5667 if let Some(rename) = self.pending_rename.as_ref() {
5668 cx.focus(&rename.editor);
5669 } else {
5670 self.focused = true;
5671 self.blink_cursors(self.blink_epoch, cx);
5672 self.buffer.update(cx, |buffer, cx| {
5673 buffer.finalize_last_transaction(cx);
5674 buffer.set_active_selections(&self.selections, cx)
5675 });
5676 }
5677 }
5678
5679 fn on_blur(&mut self, cx: &mut ViewContext<Self>) {
5680 self.focused = false;
5681 self.buffer
5682 .update(cx, |buffer, cx| buffer.remove_active_selections(cx));
5683 self.hide_context_menu(cx);
5684 cx.emit(Event::Blurred);
5685 cx.notify();
5686 }
5687
5688 fn keymap_context(&self, _: &AppContext) -> gpui::keymap::Context {
5689 let mut cx = Self::default_keymap_context();
5690 let mode = match self.mode {
5691 EditorMode::SingleLine => "single_line",
5692 EditorMode::AutoHeight { .. } => "auto_height",
5693 EditorMode::Full => "full",
5694 };
5695 cx.map.insert("mode".into(), mode.into());
5696 if self.pending_rename.is_some() {
5697 cx.set.insert("renaming".into());
5698 }
5699 match self.context_menu.as_ref() {
5700 Some(ContextMenu::Completions(_)) => {
5701 cx.set.insert("showing_completions".into());
5702 }
5703 Some(ContextMenu::CodeActions(_)) => {
5704 cx.set.insert("showing_code_actions".into());
5705 }
5706 None => {}
5707 }
5708 cx
5709 }
5710}
5711
5712fn build_style(
5713 settings: &Settings,
5714 get_field_editor_theme: Option<GetFieldEditorTheme>,
5715 override_text_style: Option<&OverrideTextStyle>,
5716 cx: &AppContext,
5717) -> EditorStyle {
5718 let font_cache = cx.font_cache();
5719
5720 let mut theme = settings.theme.editor.clone();
5721 let mut style = if let Some(get_field_editor_theme) = get_field_editor_theme {
5722 let field_editor_theme = get_field_editor_theme(&settings.theme);
5723 theme.text_color = field_editor_theme.text.color;
5724 theme.selection = field_editor_theme.selection;
5725 theme.background = field_editor_theme
5726 .container
5727 .background_color
5728 .unwrap_or_default();
5729 EditorStyle {
5730 text: field_editor_theme.text,
5731 placeholder_text: field_editor_theme.placeholder_text,
5732 theme,
5733 }
5734 } else {
5735 let font_family_id = settings.buffer_font_family;
5736 let font_family_name = cx.font_cache().family_name(font_family_id).unwrap();
5737 let font_properties = Default::default();
5738 let font_id = font_cache
5739 .select_font(font_family_id, &font_properties)
5740 .unwrap();
5741 let font_size = settings.buffer_font_size;
5742 EditorStyle {
5743 text: TextStyle {
5744 color: settings.theme.editor.text_color,
5745 font_family_name,
5746 font_family_id,
5747 font_id,
5748 font_size,
5749 font_properties,
5750 underline: Default::default(),
5751 },
5752 placeholder_text: None,
5753 theme,
5754 }
5755 };
5756
5757 if let Some(highlight_style) = override_text_style.and_then(|build_style| build_style(&style)) {
5758 if let Some(highlighted) = style
5759 .text
5760 .clone()
5761 .highlight(highlight_style, font_cache)
5762 .log_err()
5763 {
5764 style.text = highlighted;
5765 }
5766 }
5767
5768 style
5769}
5770
5771impl<T: ToPoint + ToOffset> SelectionExt for Selection<T> {
5772 fn point_range(&self, buffer: &MultiBufferSnapshot) -> Range<Point> {
5773 let start = self.start.to_point(buffer);
5774 let end = self.end.to_point(buffer);
5775 if self.reversed {
5776 end..start
5777 } else {
5778 start..end
5779 }
5780 }
5781
5782 fn offset_range(&self, buffer: &MultiBufferSnapshot) -> Range<usize> {
5783 let start = self.start.to_offset(buffer);
5784 let end = self.end.to_offset(buffer);
5785 if self.reversed {
5786 end..start
5787 } else {
5788 start..end
5789 }
5790 }
5791
5792 fn display_range(&self, map: &DisplaySnapshot) -> Range<DisplayPoint> {
5793 let start = self
5794 .start
5795 .to_point(&map.buffer_snapshot)
5796 .to_display_point(map);
5797 let end = self
5798 .end
5799 .to_point(&map.buffer_snapshot)
5800 .to_display_point(map);
5801 if self.reversed {
5802 end..start
5803 } else {
5804 start..end
5805 }
5806 }
5807
5808 fn spanned_rows(
5809 &self,
5810 include_end_if_at_line_start: bool,
5811 map: &DisplaySnapshot,
5812 ) -> Range<u32> {
5813 let start = self.start.to_point(&map.buffer_snapshot);
5814 let mut end = self.end.to_point(&map.buffer_snapshot);
5815 if !include_end_if_at_line_start && start.row != end.row && end.column == 0 {
5816 end.row -= 1;
5817 }
5818
5819 let buffer_start = map.prev_line_boundary(start).0;
5820 let buffer_end = map.next_line_boundary(end).0;
5821 buffer_start.row..buffer_end.row + 1
5822 }
5823}
5824
5825impl<T: InvalidationRegion> InvalidationStack<T> {
5826 fn invalidate<S>(&mut self, selections: &[Selection<S>], buffer: &MultiBufferSnapshot)
5827 where
5828 S: Clone + ToOffset,
5829 {
5830 while let Some(region) = self.last() {
5831 let all_selections_inside_invalidation_ranges =
5832 if selections.len() == region.ranges().len() {
5833 selections
5834 .iter()
5835 .zip(region.ranges().iter().map(|r| r.to_offset(&buffer)))
5836 .all(|(selection, invalidation_range)| {
5837 let head = selection.head().to_offset(&buffer);
5838 invalidation_range.start <= head && invalidation_range.end >= head
5839 })
5840 } else {
5841 false
5842 };
5843
5844 if all_selections_inside_invalidation_ranges {
5845 break;
5846 } else {
5847 self.pop();
5848 }
5849 }
5850 }
5851}
5852
5853impl<T> Default for InvalidationStack<T> {
5854 fn default() -> Self {
5855 Self(Default::default())
5856 }
5857}
5858
5859impl<T> Deref for InvalidationStack<T> {
5860 type Target = Vec<T>;
5861
5862 fn deref(&self) -> &Self::Target {
5863 &self.0
5864 }
5865}
5866
5867impl<T> DerefMut for InvalidationStack<T> {
5868 fn deref_mut(&mut self) -> &mut Self::Target {
5869 &mut self.0
5870 }
5871}
5872
5873impl InvalidationRegion for BracketPairState {
5874 fn ranges(&self) -> &[Range<Anchor>] {
5875 &self.ranges
5876 }
5877}
5878
5879impl InvalidationRegion for SnippetState {
5880 fn ranges(&self) -> &[Range<Anchor>] {
5881 &self.ranges[self.active_index]
5882 }
5883}
5884
5885impl Deref for EditorStyle {
5886 type Target = theme::Editor;
5887
5888 fn deref(&self) -> &Self::Target {
5889 &self.theme
5890 }
5891}
5892
5893pub fn diagnostic_block_renderer(diagnostic: Diagnostic, is_valid: bool) -> RenderBlock {
5894 let mut highlighted_lines = Vec::new();
5895 for line in diagnostic.message.lines() {
5896 highlighted_lines.push(highlight_diagnostic_message(line));
5897 }
5898
5899 Arc::new(move |cx: &BlockContext| {
5900 let settings = cx.global::<Settings>();
5901 let theme = &settings.theme.editor;
5902 let style = diagnostic_style(diagnostic.severity, is_valid, theme);
5903 let font_size = (style.text_scale_factor * settings.buffer_font_size).round();
5904 Flex::column()
5905 .with_children(highlighted_lines.iter().map(|(line, highlights)| {
5906 Label::new(
5907 line.clone(),
5908 style.message.clone().with_font_size(font_size),
5909 )
5910 .with_highlights(highlights.clone())
5911 .contained()
5912 .with_margin_left(cx.anchor_x)
5913 .boxed()
5914 }))
5915 .aligned()
5916 .left()
5917 .boxed()
5918 })
5919}
5920
5921pub fn highlight_diagnostic_message(message: &str) -> (String, Vec<usize>) {
5922 let mut message_without_backticks = String::new();
5923 let mut prev_offset = 0;
5924 let mut inside_block = false;
5925 let mut highlights = Vec::new();
5926 for (match_ix, (offset, _)) in message
5927 .match_indices('`')
5928 .chain([(message.len(), "")])
5929 .enumerate()
5930 {
5931 message_without_backticks.push_str(&message[prev_offset..offset]);
5932 if inside_block {
5933 highlights.extend(prev_offset - match_ix..offset - match_ix);
5934 }
5935
5936 inside_block = !inside_block;
5937 prev_offset = offset + 1;
5938 }
5939
5940 (message_without_backticks, highlights)
5941}
5942
5943pub fn diagnostic_style(
5944 severity: DiagnosticSeverity,
5945 valid: bool,
5946 theme: &theme::Editor,
5947) -> DiagnosticStyle {
5948 match (severity, valid) {
5949 (DiagnosticSeverity::ERROR, true) => theme.error_diagnostic.clone(),
5950 (DiagnosticSeverity::ERROR, false) => theme.invalid_error_diagnostic.clone(),
5951 (DiagnosticSeverity::WARNING, true) => theme.warning_diagnostic.clone(),
5952 (DiagnosticSeverity::WARNING, false) => theme.invalid_warning_diagnostic.clone(),
5953 (DiagnosticSeverity::INFORMATION, true) => theme.information_diagnostic.clone(),
5954 (DiagnosticSeverity::INFORMATION, false) => theme.invalid_information_diagnostic.clone(),
5955 (DiagnosticSeverity::HINT, true) => theme.hint_diagnostic.clone(),
5956 (DiagnosticSeverity::HINT, false) => theme.invalid_hint_diagnostic.clone(),
5957 _ => theme.invalid_hint_diagnostic.clone(),
5958 }
5959}
5960
5961pub fn combine_syntax_and_fuzzy_match_highlights(
5962 text: &str,
5963 default_style: HighlightStyle,
5964 syntax_ranges: impl Iterator<Item = (Range<usize>, HighlightStyle)>,
5965 match_indices: &[usize],
5966) -> Vec<(Range<usize>, HighlightStyle)> {
5967 let mut result = Vec::new();
5968 let mut match_indices = match_indices.iter().copied().peekable();
5969
5970 for (range, mut syntax_highlight) in syntax_ranges.chain([(usize::MAX..0, Default::default())])
5971 {
5972 syntax_highlight.weight = None;
5973
5974 // Add highlights for any fuzzy match characters before the next
5975 // syntax highlight range.
5976 while let Some(&match_index) = match_indices.peek() {
5977 if match_index >= range.start {
5978 break;
5979 }
5980 match_indices.next();
5981 let end_index = char_ix_after(match_index, text);
5982 let mut match_style = default_style;
5983 match_style.weight = Some(fonts::Weight::BOLD);
5984 result.push((match_index..end_index, match_style));
5985 }
5986
5987 if range.start == usize::MAX {
5988 break;
5989 }
5990
5991 // Add highlights for any fuzzy match characters within the
5992 // syntax highlight range.
5993 let mut offset = range.start;
5994 while let Some(&match_index) = match_indices.peek() {
5995 if match_index >= range.end {
5996 break;
5997 }
5998
5999 match_indices.next();
6000 if match_index > offset {
6001 result.push((offset..match_index, syntax_highlight));
6002 }
6003
6004 let mut end_index = char_ix_after(match_index, text);
6005 while let Some(&next_match_index) = match_indices.peek() {
6006 if next_match_index == end_index && next_match_index < range.end {
6007 end_index = char_ix_after(next_match_index, text);
6008 match_indices.next();
6009 } else {
6010 break;
6011 }
6012 }
6013
6014 let mut match_style = syntax_highlight;
6015 match_style.weight = Some(fonts::Weight::BOLD);
6016 result.push((match_index..end_index, match_style));
6017 offset = end_index;
6018 }
6019
6020 if offset < range.end {
6021 result.push((offset..range.end, syntax_highlight));
6022 }
6023 }
6024
6025 fn char_ix_after(ix: usize, text: &str) -> usize {
6026 ix + text[ix..].chars().next().unwrap().len_utf8()
6027 }
6028
6029 result
6030}
6031
6032pub fn styled_runs_for_code_label<'a>(
6033 label: &'a CodeLabel,
6034 syntax_theme: &'a theme::SyntaxTheme,
6035) -> impl 'a + Iterator<Item = (Range<usize>, HighlightStyle)> {
6036 let fade_out = HighlightStyle {
6037 fade_out: Some(0.35),
6038 ..Default::default()
6039 };
6040
6041 let mut prev_end = label.filter_range.end;
6042 label
6043 .runs
6044 .iter()
6045 .enumerate()
6046 .flat_map(move |(ix, (range, highlight_id))| {
6047 let style = if let Some(style) = highlight_id.style(syntax_theme) {
6048 style
6049 } else {
6050 return Default::default();
6051 };
6052 let mut muted_style = style.clone();
6053 muted_style.highlight(fade_out);
6054
6055 let mut runs = SmallVec::<[(Range<usize>, HighlightStyle); 3]>::new();
6056 if range.start >= label.filter_range.end {
6057 if range.start > prev_end {
6058 runs.push((prev_end..range.start, fade_out));
6059 }
6060 runs.push((range.clone(), muted_style));
6061 } else if range.end <= label.filter_range.end {
6062 runs.push((range.clone(), style));
6063 } else {
6064 runs.push((range.start..label.filter_range.end, style));
6065 runs.push((label.filter_range.end..range.end, muted_style));
6066 }
6067 prev_end = cmp::max(prev_end, range.end);
6068
6069 if ix + 1 == label.runs.len() && label.text.len() > prev_end {
6070 runs.push((prev_end..label.text.len(), fade_out));
6071 }
6072
6073 runs
6074 })
6075}
6076
6077#[cfg(test)]
6078mod tests {
6079 use super::*;
6080 use language::{LanguageConfig, LanguageServerConfig};
6081 use lsp::FakeLanguageServer;
6082 use project::FakeFs;
6083 use smol::stream::StreamExt;
6084 use std::{cell::RefCell, rc::Rc, time::Instant};
6085 use text::Point;
6086 use unindent::Unindent;
6087 use util::test::sample_text;
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 let buffer = MultiBuffer::build_simple("aaaaaa\nbbbbbb\ncccccc\ndddddd\n", cx);
6162 let (_, editor) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
6163
6164 editor.update(cx, |view, cx| {
6165 view.begin_selection(DisplayPoint::new(2, 2), false, 1, cx);
6166 });
6167
6168 assert_eq!(
6169 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
6170 [DisplayPoint::new(2, 2)..DisplayPoint::new(2, 2)]
6171 );
6172
6173 editor.update(cx, |view, cx| {
6174 view.update_selection(DisplayPoint::new(3, 3), 0, Vector2F::zero(), cx);
6175 });
6176
6177 assert_eq!(
6178 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
6179 [DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3)]
6180 );
6181
6182 editor.update(cx, |view, cx| {
6183 view.update_selection(DisplayPoint::new(1, 1), 0, Vector2F::zero(), cx);
6184 });
6185
6186 assert_eq!(
6187 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
6188 [DisplayPoint::new(2, 2)..DisplayPoint::new(1, 1)]
6189 );
6190
6191 editor.update(cx, |view, cx| {
6192 view.end_selection(cx);
6193 view.update_selection(DisplayPoint::new(3, 3), 0, Vector2F::zero(), cx);
6194 });
6195
6196 assert_eq!(
6197 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
6198 [DisplayPoint::new(2, 2)..DisplayPoint::new(1, 1)]
6199 );
6200
6201 editor.update(cx, |view, cx| {
6202 view.begin_selection(DisplayPoint::new(3, 3), true, 1, cx);
6203 view.update_selection(DisplayPoint::new(0, 0), 0, Vector2F::zero(), cx);
6204 });
6205
6206 assert_eq!(
6207 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
6208 [
6209 DisplayPoint::new(2, 2)..DisplayPoint::new(1, 1),
6210 DisplayPoint::new(3, 3)..DisplayPoint::new(0, 0)
6211 ]
6212 );
6213
6214 editor.update(cx, |view, cx| {
6215 view.end_selection(cx);
6216 });
6217
6218 assert_eq!(
6219 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
6220 [DisplayPoint::new(3, 3)..DisplayPoint::new(0, 0)]
6221 );
6222 }
6223
6224 #[gpui::test]
6225 fn test_canceling_pending_selection(cx: &mut gpui::MutableAppContext) {
6226 populate_settings(cx);
6227 let buffer = MultiBuffer::build_simple("aaaaaa\nbbbbbb\ncccccc\ndddddd\n", cx);
6228 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
6229
6230 view.update(cx, |view, cx| {
6231 view.begin_selection(DisplayPoint::new(2, 2), false, 1, cx);
6232 assert_eq!(
6233 view.selected_display_ranges(cx),
6234 [DisplayPoint::new(2, 2)..DisplayPoint::new(2, 2)]
6235 );
6236 });
6237
6238 view.update(cx, |view, cx| {
6239 view.update_selection(DisplayPoint::new(3, 3), 0, Vector2F::zero(), cx);
6240 assert_eq!(
6241 view.selected_display_ranges(cx),
6242 [DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3)]
6243 );
6244 });
6245
6246 view.update(cx, |view, cx| {
6247 view.cancel(&Cancel, cx);
6248 view.update_selection(DisplayPoint::new(1, 1), 0, Vector2F::zero(), cx);
6249 assert_eq!(
6250 view.selected_display_ranges(cx),
6251 [DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3)]
6252 );
6253 });
6254 }
6255
6256 #[gpui::test]
6257 fn test_navigation_history(cx: &mut gpui::MutableAppContext) {
6258 populate_settings(cx);
6259 use workspace::Item;
6260 let nav_history = Rc::new(RefCell::new(workspace::NavHistory::default()));
6261 let buffer = MultiBuffer::build_simple(&sample_text(30, 5, 'a'), cx);
6262
6263 cx.add_window(Default::default(), |cx| {
6264 let mut editor = build_editor(buffer.clone(), cx);
6265 editor.nav_history = Some(ItemNavHistory::new(nav_history.clone(), &cx.handle()));
6266
6267 // Move the cursor a small distance.
6268 // Nothing is added to the navigation history.
6269 editor.select_display_ranges(&[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)], cx);
6270 editor.select_display_ranges(&[DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0)], cx);
6271 assert!(nav_history.borrow_mut().pop_backward().is_none());
6272
6273 // Move the cursor a large distance.
6274 // The history can jump back to the previous position.
6275 editor.select_display_ranges(&[DisplayPoint::new(13, 0)..DisplayPoint::new(13, 3)], cx);
6276 let nav_entry = nav_history.borrow_mut().pop_backward().unwrap();
6277 editor.navigate(nav_entry.data.unwrap(), cx);
6278 assert_eq!(nav_entry.item.id(), cx.view_id());
6279 assert_eq!(
6280 editor.selected_display_ranges(cx),
6281 &[DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0)]
6282 );
6283
6284 // Move the cursor a small distance via the mouse.
6285 // Nothing is added to the navigation history.
6286 editor.begin_selection(DisplayPoint::new(5, 0), false, 1, cx);
6287 editor.end_selection(cx);
6288 assert_eq!(
6289 editor.selected_display_ranges(cx),
6290 &[DisplayPoint::new(5, 0)..DisplayPoint::new(5, 0)]
6291 );
6292 assert!(nav_history.borrow_mut().pop_backward().is_none());
6293
6294 // Move the cursor a large distance via the mouse.
6295 // The history can jump back to the previous position.
6296 editor.begin_selection(DisplayPoint::new(15, 0), false, 1, cx);
6297 editor.end_selection(cx);
6298 assert_eq!(
6299 editor.selected_display_ranges(cx),
6300 &[DisplayPoint::new(15, 0)..DisplayPoint::new(15, 0)]
6301 );
6302 let nav_entry = nav_history.borrow_mut().pop_backward().unwrap();
6303 editor.navigate(nav_entry.data.unwrap(), cx);
6304 assert_eq!(nav_entry.item.id(), cx.view_id());
6305 assert_eq!(
6306 editor.selected_display_ranges(cx),
6307 &[DisplayPoint::new(5, 0)..DisplayPoint::new(5, 0)]
6308 );
6309
6310 editor
6311 });
6312 }
6313
6314 #[gpui::test]
6315 fn test_cancel(cx: &mut gpui::MutableAppContext) {
6316 populate_settings(cx);
6317 let buffer = MultiBuffer::build_simple("aaaaaa\nbbbbbb\ncccccc\ndddddd\n", cx);
6318 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
6319
6320 view.update(cx, |view, cx| {
6321 view.begin_selection(DisplayPoint::new(3, 4), false, 1, cx);
6322 view.update_selection(DisplayPoint::new(1, 1), 0, Vector2F::zero(), cx);
6323 view.end_selection(cx);
6324
6325 view.begin_selection(DisplayPoint::new(0, 1), true, 1, cx);
6326 view.update_selection(DisplayPoint::new(0, 3), 0, Vector2F::zero(), cx);
6327 view.end_selection(cx);
6328 assert_eq!(
6329 view.selected_display_ranges(cx),
6330 [
6331 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
6332 DisplayPoint::new(3, 4)..DisplayPoint::new(1, 1),
6333 ]
6334 );
6335 });
6336
6337 view.update(cx, |view, cx| {
6338 view.cancel(&Cancel, cx);
6339 assert_eq!(
6340 view.selected_display_ranges(cx),
6341 [DisplayPoint::new(3, 4)..DisplayPoint::new(1, 1)]
6342 );
6343 });
6344
6345 view.update(cx, |view, cx| {
6346 view.cancel(&Cancel, cx);
6347 assert_eq!(
6348 view.selected_display_ranges(cx),
6349 [DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1)]
6350 );
6351 });
6352 }
6353
6354 #[gpui::test]
6355 fn test_fold(cx: &mut gpui::MutableAppContext) {
6356 populate_settings(cx);
6357 let buffer = MultiBuffer::build_simple(
6358 &"
6359 impl Foo {
6360 // Hello!
6361
6362 fn a() {
6363 1
6364 }
6365
6366 fn b() {
6367 2
6368 }
6369
6370 fn c() {
6371 3
6372 }
6373 }
6374 "
6375 .unindent(),
6376 cx,
6377 );
6378 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer.clone(), cx));
6379
6380 view.update(cx, |view, cx| {
6381 view.select_display_ranges(&[DisplayPoint::new(8, 0)..DisplayPoint::new(12, 0)], cx);
6382 view.fold(&Fold, cx);
6383 assert_eq!(
6384 view.display_text(cx),
6385 "
6386 impl Foo {
6387 // Hello!
6388
6389 fn a() {
6390 1
6391 }
6392
6393 fn b() {…
6394 }
6395
6396 fn c() {…
6397 }
6398 }
6399 "
6400 .unindent(),
6401 );
6402
6403 view.fold(&Fold, cx);
6404 assert_eq!(
6405 view.display_text(cx),
6406 "
6407 impl Foo {…
6408 }
6409 "
6410 .unindent(),
6411 );
6412
6413 view.unfold(&Unfold, cx);
6414 assert_eq!(
6415 view.display_text(cx),
6416 "
6417 impl Foo {
6418 // Hello!
6419
6420 fn a() {
6421 1
6422 }
6423
6424 fn b() {…
6425 }
6426
6427 fn c() {…
6428 }
6429 }
6430 "
6431 .unindent(),
6432 );
6433
6434 view.unfold(&Unfold, cx);
6435 assert_eq!(view.display_text(cx), buffer.read(cx).read(cx).text());
6436 });
6437 }
6438
6439 #[gpui::test]
6440 fn test_move_cursor(cx: &mut gpui::MutableAppContext) {
6441 populate_settings(cx);
6442 let buffer = MultiBuffer::build_simple(&sample_text(6, 6, 'a'), cx);
6443 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer.clone(), cx));
6444
6445 buffer.update(cx, |buffer, cx| {
6446 buffer.edit(
6447 vec![
6448 Point::new(1, 0)..Point::new(1, 0),
6449 Point::new(1, 1)..Point::new(1, 1),
6450 ],
6451 "\t",
6452 cx,
6453 );
6454 });
6455
6456 view.update(cx, |view, cx| {
6457 assert_eq!(
6458 view.selected_display_ranges(cx),
6459 &[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)]
6460 );
6461
6462 view.move_down(&MoveDown, cx);
6463 assert_eq!(
6464 view.selected_display_ranges(cx),
6465 &[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)]
6466 );
6467
6468 view.move_right(&MoveRight, cx);
6469 assert_eq!(
6470 view.selected_display_ranges(cx),
6471 &[DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4)]
6472 );
6473
6474 view.move_left(&MoveLeft, cx);
6475 assert_eq!(
6476 view.selected_display_ranges(cx),
6477 &[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)]
6478 );
6479
6480 view.move_up(&MoveUp, cx);
6481 assert_eq!(
6482 view.selected_display_ranges(cx),
6483 &[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)]
6484 );
6485
6486 view.move_to_end(&MoveToEnd, cx);
6487 assert_eq!(
6488 view.selected_display_ranges(cx),
6489 &[DisplayPoint::new(5, 6)..DisplayPoint::new(5, 6)]
6490 );
6491
6492 view.move_to_beginning(&MoveToBeginning, cx);
6493 assert_eq!(
6494 view.selected_display_ranges(cx),
6495 &[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)]
6496 );
6497
6498 view.select_display_ranges(&[DisplayPoint::new(0, 1)..DisplayPoint::new(0, 2)], cx);
6499 view.select_to_beginning(&SelectToBeginning, cx);
6500 assert_eq!(
6501 view.selected_display_ranges(cx),
6502 &[DisplayPoint::new(0, 1)..DisplayPoint::new(0, 0)]
6503 );
6504
6505 view.select_to_end(&SelectToEnd, cx);
6506 assert_eq!(
6507 view.selected_display_ranges(cx),
6508 &[DisplayPoint::new(0, 1)..DisplayPoint::new(5, 6)]
6509 );
6510 });
6511 }
6512
6513 #[gpui::test]
6514 fn test_move_cursor_multibyte(cx: &mut gpui::MutableAppContext) {
6515 populate_settings(cx);
6516 let buffer = MultiBuffer::build_simple("ⓐⓑⓒⓓⓔ\nabcde\nαβγδε\n", cx);
6517 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer.clone(), cx));
6518
6519 assert_eq!('ⓐ'.len_utf8(), 3);
6520 assert_eq!('α'.len_utf8(), 2);
6521
6522 view.update(cx, |view, cx| {
6523 view.fold_ranges(
6524 vec![
6525 Point::new(0, 6)..Point::new(0, 12),
6526 Point::new(1, 2)..Point::new(1, 4),
6527 Point::new(2, 4)..Point::new(2, 8),
6528 ],
6529 cx,
6530 );
6531 assert_eq!(view.display_text(cx), "ⓐⓑ…ⓔ\nab…e\nαβ…ε\n");
6532
6533 view.move_right(&MoveRight, cx);
6534 assert_eq!(
6535 view.selected_display_ranges(cx),
6536 &[empty_range(0, "ⓐ".len())]
6537 );
6538 view.move_right(&MoveRight, cx);
6539 assert_eq!(
6540 view.selected_display_ranges(cx),
6541 &[empty_range(0, "ⓐⓑ".len())]
6542 );
6543 view.move_right(&MoveRight, cx);
6544 assert_eq!(
6545 view.selected_display_ranges(cx),
6546 &[empty_range(0, "ⓐⓑ…".len())]
6547 );
6548
6549 view.move_down(&MoveDown, cx);
6550 assert_eq!(
6551 view.selected_display_ranges(cx),
6552 &[empty_range(1, "ab…".len())]
6553 );
6554 view.move_left(&MoveLeft, cx);
6555 assert_eq!(
6556 view.selected_display_ranges(cx),
6557 &[empty_range(1, "ab".len())]
6558 );
6559 view.move_left(&MoveLeft, cx);
6560 assert_eq!(
6561 view.selected_display_ranges(cx),
6562 &[empty_range(1, "a".len())]
6563 );
6564
6565 view.move_down(&MoveDown, cx);
6566 assert_eq!(
6567 view.selected_display_ranges(cx),
6568 &[empty_range(2, "α".len())]
6569 );
6570 view.move_right(&MoveRight, cx);
6571 assert_eq!(
6572 view.selected_display_ranges(cx),
6573 &[empty_range(2, "αβ".len())]
6574 );
6575 view.move_right(&MoveRight, cx);
6576 assert_eq!(
6577 view.selected_display_ranges(cx),
6578 &[empty_range(2, "αβ…".len())]
6579 );
6580 view.move_right(&MoveRight, cx);
6581 assert_eq!(
6582 view.selected_display_ranges(cx),
6583 &[empty_range(2, "αβ…ε".len())]
6584 );
6585
6586 view.move_up(&MoveUp, cx);
6587 assert_eq!(
6588 view.selected_display_ranges(cx),
6589 &[empty_range(1, "ab…e".len())]
6590 );
6591 view.move_up(&MoveUp, cx);
6592 assert_eq!(
6593 view.selected_display_ranges(cx),
6594 &[empty_range(0, "ⓐⓑ…ⓔ".len())]
6595 );
6596 view.move_left(&MoveLeft, cx);
6597 assert_eq!(
6598 view.selected_display_ranges(cx),
6599 &[empty_range(0, "ⓐⓑ…".len())]
6600 );
6601 view.move_left(&MoveLeft, cx);
6602 assert_eq!(
6603 view.selected_display_ranges(cx),
6604 &[empty_range(0, "ⓐⓑ".len())]
6605 );
6606 view.move_left(&MoveLeft, cx);
6607 assert_eq!(
6608 view.selected_display_ranges(cx),
6609 &[empty_range(0, "ⓐ".len())]
6610 );
6611 });
6612 }
6613
6614 #[gpui::test]
6615 fn test_move_cursor_different_line_lengths(cx: &mut gpui::MutableAppContext) {
6616 populate_settings(cx);
6617 let buffer = MultiBuffer::build_simple("ⓐⓑⓒⓓⓔ\nabcd\nαβγ\nabcd\nⓐⓑⓒⓓⓔ\n", cx);
6618 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer.clone(), cx));
6619 view.update(cx, |view, cx| {
6620 view.select_display_ranges(&[empty_range(0, "ⓐⓑⓒⓓⓔ".len())], cx);
6621 view.move_down(&MoveDown, cx);
6622 assert_eq!(
6623 view.selected_display_ranges(cx),
6624 &[empty_range(1, "abcd".len())]
6625 );
6626
6627 view.move_down(&MoveDown, cx);
6628 assert_eq!(
6629 view.selected_display_ranges(cx),
6630 &[empty_range(2, "αβγ".len())]
6631 );
6632
6633 view.move_down(&MoveDown, cx);
6634 assert_eq!(
6635 view.selected_display_ranges(cx),
6636 &[empty_range(3, "abcd".len())]
6637 );
6638
6639 view.move_down(&MoveDown, cx);
6640 assert_eq!(
6641 view.selected_display_ranges(cx),
6642 &[empty_range(4, "ⓐⓑⓒⓓⓔ".len())]
6643 );
6644
6645 view.move_up(&MoveUp, cx);
6646 assert_eq!(
6647 view.selected_display_ranges(cx),
6648 &[empty_range(3, "abcd".len())]
6649 );
6650
6651 view.move_up(&MoveUp, cx);
6652 assert_eq!(
6653 view.selected_display_ranges(cx),
6654 &[empty_range(2, "αβγ".len())]
6655 );
6656 });
6657 }
6658
6659 #[gpui::test]
6660 fn test_beginning_end_of_line(cx: &mut gpui::MutableAppContext) {
6661 populate_settings(cx);
6662 let buffer = MultiBuffer::build_simple("abc\n def", cx);
6663 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
6664 view.update(cx, |view, cx| {
6665 view.select_display_ranges(
6666 &[
6667 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
6668 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4),
6669 ],
6670 cx,
6671 );
6672 });
6673
6674 view.update(cx, |view, cx| {
6675 view.move_to_beginning_of_line(&MoveToBeginningOfLine, cx);
6676 assert_eq!(
6677 view.selected_display_ranges(cx),
6678 &[
6679 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
6680 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
6681 ]
6682 );
6683 });
6684
6685 view.update(cx, |view, cx| {
6686 view.move_to_beginning_of_line(&MoveToBeginningOfLine, cx);
6687 assert_eq!(
6688 view.selected_display_ranges(cx),
6689 &[
6690 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
6691 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
6692 ]
6693 );
6694 });
6695
6696 view.update(cx, |view, cx| {
6697 view.move_to_beginning_of_line(&MoveToBeginningOfLine, cx);
6698 assert_eq!(
6699 view.selected_display_ranges(cx),
6700 &[
6701 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
6702 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
6703 ]
6704 );
6705 });
6706
6707 view.update(cx, |view, cx| {
6708 view.move_to_end_of_line(&MoveToEndOfLine, cx);
6709 assert_eq!(
6710 view.selected_display_ranges(cx),
6711 &[
6712 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
6713 DisplayPoint::new(1, 5)..DisplayPoint::new(1, 5),
6714 ]
6715 );
6716 });
6717
6718 // Moving to the end of line again is a no-op.
6719 view.update(cx, |view, cx| {
6720 view.move_to_end_of_line(&MoveToEndOfLine, cx);
6721 assert_eq!(
6722 view.selected_display_ranges(cx),
6723 &[
6724 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
6725 DisplayPoint::new(1, 5)..DisplayPoint::new(1, 5),
6726 ]
6727 );
6728 });
6729
6730 view.update(cx, |view, cx| {
6731 view.move_left(&MoveLeft, cx);
6732 view.select_to_beginning_of_line(&SelectToBeginningOfLine(true), cx);
6733 assert_eq!(
6734 view.selected_display_ranges(cx),
6735 &[
6736 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 0),
6737 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 2),
6738 ]
6739 );
6740 });
6741
6742 view.update(cx, |view, cx| {
6743 view.select_to_beginning_of_line(&SelectToBeginningOfLine(true), cx);
6744 assert_eq!(
6745 view.selected_display_ranges(cx),
6746 &[
6747 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 0),
6748 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 0),
6749 ]
6750 );
6751 });
6752
6753 view.update(cx, |view, cx| {
6754 view.select_to_beginning_of_line(&SelectToBeginningOfLine(true), cx);
6755 assert_eq!(
6756 view.selected_display_ranges(cx),
6757 &[
6758 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 0),
6759 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 2),
6760 ]
6761 );
6762 });
6763
6764 view.update(cx, |view, cx| {
6765 view.select_to_end_of_line(&SelectToEndOfLine(true), cx);
6766 assert_eq!(
6767 view.selected_display_ranges(cx),
6768 &[
6769 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 3),
6770 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 5),
6771 ]
6772 );
6773 });
6774
6775 view.update(cx, |view, cx| {
6776 view.delete_to_end_of_line(&DeleteToEndOfLine, cx);
6777 assert_eq!(view.display_text(cx), "ab\n de");
6778 assert_eq!(
6779 view.selected_display_ranges(cx),
6780 &[
6781 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
6782 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4),
6783 ]
6784 );
6785 });
6786
6787 view.update(cx, |view, cx| {
6788 view.delete_to_beginning_of_line(&DeleteToBeginningOfLine, cx);
6789 assert_eq!(view.display_text(cx), "\n");
6790 assert_eq!(
6791 view.selected_display_ranges(cx),
6792 &[
6793 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
6794 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
6795 ]
6796 );
6797 });
6798 }
6799
6800 #[gpui::test]
6801 fn test_prev_next_word_boundary(cx: &mut gpui::MutableAppContext) {
6802 populate_settings(cx);
6803 let buffer = MultiBuffer::build_simple("use std::str::{foo, bar}\n\n {baz.qux()}", cx);
6804 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
6805 view.update(cx, |view, cx| {
6806 view.select_display_ranges(
6807 &[
6808 DisplayPoint::new(0, 11)..DisplayPoint::new(0, 11),
6809 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 4),
6810 ],
6811 cx,
6812 );
6813 });
6814
6815 view.update(cx, |view, cx| {
6816 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
6817 assert_eq!(
6818 view.selected_display_ranges(cx),
6819 &[
6820 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 9),
6821 DisplayPoint::new(2, 3)..DisplayPoint::new(2, 3),
6822 ]
6823 );
6824 });
6825
6826 view.update(cx, |view, cx| {
6827 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
6828 assert_eq!(
6829 view.selected_display_ranges(cx),
6830 &[
6831 DisplayPoint::new(0, 7)..DisplayPoint::new(0, 7),
6832 DisplayPoint::new(2, 2)..DisplayPoint::new(2, 2),
6833 ]
6834 );
6835 });
6836
6837 view.update(cx, |view, cx| {
6838 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
6839 assert_eq!(
6840 view.selected_display_ranges(cx),
6841 &[
6842 DisplayPoint::new(0, 4)..DisplayPoint::new(0, 4),
6843 DisplayPoint::new(2, 0)..DisplayPoint::new(2, 0),
6844 ]
6845 );
6846 });
6847
6848 view.update(cx, |view, cx| {
6849 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
6850 assert_eq!(
6851 view.selected_display_ranges(cx),
6852 &[
6853 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
6854 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
6855 ]
6856 );
6857 });
6858
6859 view.update(cx, |view, cx| {
6860 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
6861 assert_eq!(
6862 view.selected_display_ranges(cx),
6863 &[
6864 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
6865 DisplayPoint::new(0, 23)..DisplayPoint::new(0, 23),
6866 ]
6867 );
6868 });
6869
6870 view.update(cx, |view, cx| {
6871 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
6872 assert_eq!(
6873 view.selected_display_ranges(cx),
6874 &[
6875 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
6876 DisplayPoint::new(0, 24)..DisplayPoint::new(0, 24),
6877 ]
6878 );
6879 });
6880
6881 view.update(cx, |view, cx| {
6882 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
6883 assert_eq!(
6884 view.selected_display_ranges(cx),
6885 &[
6886 DisplayPoint::new(0, 7)..DisplayPoint::new(0, 7),
6887 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
6888 ]
6889 );
6890 });
6891
6892 view.update(cx, |view, cx| {
6893 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
6894 assert_eq!(
6895 view.selected_display_ranges(cx),
6896 &[
6897 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 9),
6898 DisplayPoint::new(2, 3)..DisplayPoint::new(2, 3),
6899 ]
6900 );
6901 });
6902
6903 view.update(cx, |view, cx| {
6904 view.move_right(&MoveRight, cx);
6905 view.select_to_previous_word_boundary(&SelectToPreviousWordBoundary, cx);
6906 assert_eq!(
6907 view.selected_display_ranges(cx),
6908 &[
6909 DisplayPoint::new(0, 10)..DisplayPoint::new(0, 9),
6910 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 3),
6911 ]
6912 );
6913 });
6914
6915 view.update(cx, |view, cx| {
6916 view.select_to_previous_word_boundary(&SelectToPreviousWordBoundary, cx);
6917 assert_eq!(
6918 view.selected_display_ranges(cx),
6919 &[
6920 DisplayPoint::new(0, 10)..DisplayPoint::new(0, 7),
6921 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 2),
6922 ]
6923 );
6924 });
6925
6926 view.update(cx, |view, cx| {
6927 view.select_to_next_word_boundary(&SelectToNextWordBoundary, cx);
6928 assert_eq!(
6929 view.selected_display_ranges(cx),
6930 &[
6931 DisplayPoint::new(0, 10)..DisplayPoint::new(0, 9),
6932 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 3),
6933 ]
6934 );
6935 });
6936 }
6937
6938 #[gpui::test]
6939 fn test_prev_next_word_bounds_with_soft_wrap(cx: &mut gpui::MutableAppContext) {
6940 populate_settings(cx);
6941 let buffer = MultiBuffer::build_simple("use one::{\n two::three::four::five\n};", cx);
6942 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
6943
6944 view.update(cx, |view, cx| {
6945 view.set_wrap_width(Some(140.), cx);
6946 assert_eq!(
6947 view.display_text(cx),
6948 "use one::{\n two::three::\n four::five\n};"
6949 );
6950
6951 view.select_display_ranges(&[DisplayPoint::new(1, 7)..DisplayPoint::new(1, 7)], cx);
6952
6953 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
6954 assert_eq!(
6955 view.selected_display_ranges(cx),
6956 &[DisplayPoint::new(1, 9)..DisplayPoint::new(1, 9)]
6957 );
6958
6959 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
6960 assert_eq!(
6961 view.selected_display_ranges(cx),
6962 &[DisplayPoint::new(1, 14)..DisplayPoint::new(1, 14)]
6963 );
6964
6965 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
6966 assert_eq!(
6967 view.selected_display_ranges(cx),
6968 &[DisplayPoint::new(2, 4)..DisplayPoint::new(2, 4)]
6969 );
6970
6971 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
6972 assert_eq!(
6973 view.selected_display_ranges(cx),
6974 &[DisplayPoint::new(2, 8)..DisplayPoint::new(2, 8)]
6975 );
6976
6977 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
6978 assert_eq!(
6979 view.selected_display_ranges(cx),
6980 &[DisplayPoint::new(2, 4)..DisplayPoint::new(2, 4)]
6981 );
6982
6983 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
6984 assert_eq!(
6985 view.selected_display_ranges(cx),
6986 &[DisplayPoint::new(1, 14)..DisplayPoint::new(1, 14)]
6987 );
6988 });
6989 }
6990
6991 #[gpui::test]
6992 fn test_delete_to_word_boundary(cx: &mut gpui::MutableAppContext) {
6993 populate_settings(cx);
6994 let buffer = MultiBuffer::build_simple("one two three four", cx);
6995 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer.clone(), cx));
6996
6997 view.update(cx, |view, cx| {
6998 view.select_display_ranges(
6999 &[
7000 // an empty selection - the preceding word fragment is deleted
7001 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
7002 // characters selected - they are deleted
7003 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 12),
7004 ],
7005 cx,
7006 );
7007 view.delete_to_previous_word_boundary(&DeleteToPreviousWordBoundary, cx);
7008 });
7009
7010 assert_eq!(buffer.read(cx).read(cx).text(), "e two te four");
7011
7012 view.update(cx, |view, cx| {
7013 view.select_display_ranges(
7014 &[
7015 // an empty selection - the following word fragment is deleted
7016 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
7017 // characters selected - they are deleted
7018 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 10),
7019 ],
7020 cx,
7021 );
7022 view.delete_to_next_word_boundary(&DeleteToNextWordBoundary, cx);
7023 });
7024
7025 assert_eq!(buffer.read(cx).read(cx).text(), "e t te our");
7026 }
7027
7028 #[gpui::test]
7029 fn test_newline(cx: &mut gpui::MutableAppContext) {
7030 populate_settings(cx);
7031 let buffer = MultiBuffer::build_simple("aaaa\n bbbb\n", cx);
7032 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer.clone(), cx));
7033
7034 view.update(cx, |view, cx| {
7035 view.select_display_ranges(
7036 &[
7037 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
7038 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
7039 DisplayPoint::new(1, 6)..DisplayPoint::new(1, 6),
7040 ],
7041 cx,
7042 );
7043
7044 view.newline(&Newline, cx);
7045 assert_eq!(view.text(cx), "aa\naa\n \n bb\n bb\n");
7046 });
7047 }
7048
7049 #[gpui::test]
7050 fn test_newline_with_old_selections(cx: &mut gpui::MutableAppContext) {
7051 populate_settings(cx);
7052 let buffer = MultiBuffer::build_simple(
7053 "
7054 a
7055 b(
7056 X
7057 )
7058 c(
7059 X
7060 )
7061 "
7062 .unindent()
7063 .as_str(),
7064 cx,
7065 );
7066
7067 let (_, editor) = cx.add_window(Default::default(), |cx| {
7068 let mut editor = build_editor(buffer.clone(), cx);
7069 editor.select_ranges(
7070 [
7071 Point::new(2, 4)..Point::new(2, 5),
7072 Point::new(5, 4)..Point::new(5, 5),
7073 ],
7074 None,
7075 cx,
7076 );
7077 editor
7078 });
7079
7080 // Edit the buffer directly, deleting ranges surrounding the editor's selections
7081 buffer.update(cx, |buffer, cx| {
7082 buffer.edit(
7083 [
7084 Point::new(1, 2)..Point::new(3, 0),
7085 Point::new(4, 2)..Point::new(6, 0),
7086 ],
7087 "",
7088 cx,
7089 );
7090 assert_eq!(
7091 buffer.read(cx).text(),
7092 "
7093 a
7094 b()
7095 c()
7096 "
7097 .unindent()
7098 );
7099 });
7100
7101 editor.update(cx, |editor, cx| {
7102 assert_eq!(
7103 editor.selected_ranges(cx),
7104 &[
7105 Point::new(1, 2)..Point::new(1, 2),
7106 Point::new(2, 2)..Point::new(2, 2),
7107 ],
7108 );
7109
7110 editor.newline(&Newline, cx);
7111 assert_eq!(
7112 editor.text(cx),
7113 "
7114 a
7115 b(
7116 )
7117 c(
7118 )
7119 "
7120 .unindent()
7121 );
7122
7123 // The selections are moved after the inserted newlines
7124 assert_eq!(
7125 editor.selected_ranges(cx),
7126 &[
7127 Point::new(2, 0)..Point::new(2, 0),
7128 Point::new(4, 0)..Point::new(4, 0),
7129 ],
7130 );
7131 });
7132 }
7133
7134 #[gpui::test]
7135 fn test_insert_with_old_selections(cx: &mut gpui::MutableAppContext) {
7136 populate_settings(cx);
7137 let buffer = MultiBuffer::build_simple("a( X ), b( Y ), c( Z )", cx);
7138 let (_, editor) = cx.add_window(Default::default(), |cx| {
7139 let mut editor = build_editor(buffer.clone(), cx);
7140 editor.select_ranges([3..4, 11..12, 19..20], None, cx);
7141 editor
7142 });
7143
7144 // Edit the buffer directly, deleting ranges surrounding the editor's selections
7145 buffer.update(cx, |buffer, cx| {
7146 buffer.edit([2..5, 10..13, 18..21], "", cx);
7147 assert_eq!(buffer.read(cx).text(), "a(), b(), c()".unindent());
7148 });
7149
7150 editor.update(cx, |editor, cx| {
7151 assert_eq!(editor.selected_ranges(cx), &[2..2, 7..7, 12..12],);
7152
7153 editor.insert("Z", cx);
7154 assert_eq!(editor.text(cx), "a(Z), b(Z), c(Z)");
7155
7156 // The selections are moved after the inserted characters
7157 assert_eq!(editor.selected_ranges(cx), &[3..3, 9..9, 15..15],);
7158 });
7159 }
7160
7161 #[gpui::test]
7162 fn test_indent_outdent(cx: &mut gpui::MutableAppContext) {
7163 populate_settings(cx);
7164 let buffer = MultiBuffer::build_simple(" one two\nthree\n four", cx);
7165 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer.clone(), cx));
7166
7167 view.update(cx, |view, cx| {
7168 // two selections on the same line
7169 view.select_display_ranges(
7170 &[
7171 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 5),
7172 DisplayPoint::new(0, 6)..DisplayPoint::new(0, 9),
7173 ],
7174 cx,
7175 );
7176
7177 // indent from mid-tabstop to full tabstop
7178 view.tab(&Tab, cx);
7179 assert_eq!(view.text(cx), " one two\nthree\n four");
7180 assert_eq!(
7181 view.selected_display_ranges(cx),
7182 &[
7183 DisplayPoint::new(0, 4)..DisplayPoint::new(0, 7),
7184 DisplayPoint::new(0, 8)..DisplayPoint::new(0, 11),
7185 ]
7186 );
7187
7188 // outdent from 1 tabstop to 0 tabstops
7189 view.outdent(&Outdent, cx);
7190 assert_eq!(view.text(cx), "one two\nthree\n four");
7191 assert_eq!(
7192 view.selected_display_ranges(cx),
7193 &[
7194 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 3),
7195 DisplayPoint::new(0, 4)..DisplayPoint::new(0, 7),
7196 ]
7197 );
7198
7199 // select across line ending
7200 view.select_display_ranges(&[DisplayPoint::new(1, 1)..DisplayPoint::new(2, 0)], cx);
7201
7202 // indent and outdent affect only the preceding line
7203 view.tab(&Tab, cx);
7204 assert_eq!(view.text(cx), "one two\n three\n four");
7205 assert_eq!(
7206 view.selected_display_ranges(cx),
7207 &[DisplayPoint::new(1, 5)..DisplayPoint::new(2, 0)]
7208 );
7209 view.outdent(&Outdent, cx);
7210 assert_eq!(view.text(cx), "one two\nthree\n four");
7211 assert_eq!(
7212 view.selected_display_ranges(cx),
7213 &[DisplayPoint::new(1, 1)..DisplayPoint::new(2, 0)]
7214 );
7215
7216 // Ensure that indenting/outdenting works when the cursor is at column 0.
7217 view.select_display_ranges(&[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)], cx);
7218 view.tab(&Tab, cx);
7219 assert_eq!(view.text(cx), "one two\n three\n four");
7220 assert_eq!(
7221 view.selected_display_ranges(cx),
7222 &[DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4)]
7223 );
7224
7225 view.select_display_ranges(&[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)], cx);
7226 view.outdent(&Outdent, cx);
7227 assert_eq!(view.text(cx), "one two\nthree\n four");
7228 assert_eq!(
7229 view.selected_display_ranges(cx),
7230 &[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)]
7231 );
7232 });
7233 }
7234
7235 #[gpui::test]
7236 fn test_backspace(cx: &mut gpui::MutableAppContext) {
7237 populate_settings(cx);
7238 let (_, view) = cx.add_window(Default::default(), |cx| {
7239 build_editor(MultiBuffer::build_simple("", cx), cx)
7240 });
7241
7242 view.update(cx, |view, cx| {
7243 view.set_text("one two three\nfour five six\nseven eight nine\nten\n", cx);
7244 view.select_display_ranges(
7245 &[
7246 // an empty selection - the preceding character is deleted
7247 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
7248 // one character selected - it is deleted
7249 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
7250 // a line suffix selected - it is deleted
7251 DisplayPoint::new(2, 6)..DisplayPoint::new(3, 0),
7252 ],
7253 cx,
7254 );
7255 view.backspace(&Backspace, cx);
7256 assert_eq!(view.text(cx), "oe two three\nfou five six\nseven ten\n");
7257
7258 view.set_text(" one\n two\n three\n four", cx);
7259 view.select_display_ranges(
7260 &[
7261 // cursors at the the end of leading indent - last indent is deleted
7262 DisplayPoint::new(0, 4)..DisplayPoint::new(0, 4),
7263 DisplayPoint::new(1, 8)..DisplayPoint::new(1, 8),
7264 // cursors inside leading indent - overlapping indent deletions are coalesced
7265 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 4),
7266 DisplayPoint::new(2, 5)..DisplayPoint::new(2, 5),
7267 DisplayPoint::new(2, 6)..DisplayPoint::new(2, 6),
7268 // cursor at the beginning of a line - preceding newline is deleted
7269 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
7270 // selection inside leading indent - only the selected character is deleted
7271 DisplayPoint::new(3, 2)..DisplayPoint::new(3, 3),
7272 ],
7273 cx,
7274 );
7275 view.backspace(&Backspace, cx);
7276 assert_eq!(view.text(cx), "one\n two\n three four");
7277 });
7278 }
7279
7280 #[gpui::test]
7281 fn test_delete(cx: &mut gpui::MutableAppContext) {
7282 populate_settings(cx);
7283 let buffer =
7284 MultiBuffer::build_simple("one two three\nfour five six\nseven eight nine\nten\n", cx);
7285 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer.clone(), cx));
7286
7287 view.update(cx, |view, cx| {
7288 view.select_display_ranges(
7289 &[
7290 // an empty selection - the following character is deleted
7291 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
7292 // one character selected - it is deleted
7293 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
7294 // a line suffix selected - it is deleted
7295 DisplayPoint::new(2, 6)..DisplayPoint::new(3, 0),
7296 ],
7297 cx,
7298 );
7299 view.delete(&Delete, cx);
7300 });
7301
7302 assert_eq!(
7303 buffer.read(cx).read(cx).text(),
7304 "on two three\nfou five six\nseven ten\n"
7305 );
7306 }
7307
7308 #[gpui::test]
7309 fn test_delete_line(cx: &mut gpui::MutableAppContext) {
7310 populate_settings(cx);
7311 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
7312 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
7313 view.update(cx, |view, cx| {
7314 view.select_display_ranges(
7315 &[
7316 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
7317 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 1),
7318 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
7319 ],
7320 cx,
7321 );
7322 view.delete_line(&DeleteLine, cx);
7323 assert_eq!(view.display_text(cx), "ghi");
7324 assert_eq!(
7325 view.selected_display_ranges(cx),
7326 vec![
7327 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
7328 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1)
7329 ]
7330 );
7331 });
7332
7333 populate_settings(cx);
7334 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
7335 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
7336 view.update(cx, |view, cx| {
7337 view.select_display_ranges(&[DisplayPoint::new(2, 0)..DisplayPoint::new(0, 1)], cx);
7338 view.delete_line(&DeleteLine, cx);
7339 assert_eq!(view.display_text(cx), "ghi\n");
7340 assert_eq!(
7341 view.selected_display_ranges(cx),
7342 vec![DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1)]
7343 );
7344 });
7345 }
7346
7347 #[gpui::test]
7348 fn test_duplicate_line(cx: &mut gpui::MutableAppContext) {
7349 populate_settings(cx);
7350 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
7351 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
7352 view.update(cx, |view, cx| {
7353 view.select_display_ranges(
7354 &[
7355 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
7356 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
7357 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
7358 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
7359 ],
7360 cx,
7361 );
7362 view.duplicate_line(&DuplicateLine, cx);
7363 assert_eq!(view.display_text(cx), "abc\nabc\ndef\ndef\nghi\n\n");
7364 assert_eq!(
7365 view.selected_display_ranges(cx),
7366 vec![
7367 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 1),
7368 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
7369 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
7370 DisplayPoint::new(6, 0)..DisplayPoint::new(6, 0),
7371 ]
7372 );
7373 });
7374
7375 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
7376 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
7377 view.update(cx, |view, cx| {
7378 view.select_display_ranges(
7379 &[
7380 DisplayPoint::new(0, 1)..DisplayPoint::new(1, 1),
7381 DisplayPoint::new(1, 2)..DisplayPoint::new(2, 1),
7382 ],
7383 cx,
7384 );
7385 view.duplicate_line(&DuplicateLine, cx);
7386 assert_eq!(view.display_text(cx), "abc\ndef\nghi\nabc\ndef\nghi\n");
7387 assert_eq!(
7388 view.selected_display_ranges(cx),
7389 vec![
7390 DisplayPoint::new(3, 1)..DisplayPoint::new(4, 1),
7391 DisplayPoint::new(4, 2)..DisplayPoint::new(5, 1),
7392 ]
7393 );
7394 });
7395 }
7396
7397 #[gpui::test]
7398 fn test_move_line_up_down(cx: &mut gpui::MutableAppContext) {
7399 populate_settings(cx);
7400 let buffer = MultiBuffer::build_simple(&sample_text(10, 5, 'a'), cx);
7401 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
7402 view.update(cx, |view, cx| {
7403 view.fold_ranges(
7404 vec![
7405 Point::new(0, 2)..Point::new(1, 2),
7406 Point::new(2, 3)..Point::new(4, 1),
7407 Point::new(7, 0)..Point::new(8, 4),
7408 ],
7409 cx,
7410 );
7411 view.select_display_ranges(
7412 &[
7413 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
7414 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 1),
7415 DisplayPoint::new(3, 2)..DisplayPoint::new(4, 3),
7416 DisplayPoint::new(5, 0)..DisplayPoint::new(5, 2),
7417 ],
7418 cx,
7419 );
7420 assert_eq!(
7421 view.display_text(cx),
7422 "aa…bbb\nccc…eeee\nfffff\nggggg\n…i\njjjjj"
7423 );
7424
7425 view.move_line_up(&MoveLineUp, cx);
7426 assert_eq!(
7427 view.display_text(cx),
7428 "aa…bbb\nccc…eeee\nggggg\n…i\njjjjj\nfffff"
7429 );
7430 assert_eq!(
7431 view.selected_display_ranges(cx),
7432 vec![
7433 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
7434 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
7435 DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3),
7436 DisplayPoint::new(4, 0)..DisplayPoint::new(4, 2)
7437 ]
7438 );
7439 });
7440
7441 view.update(cx, |view, cx| {
7442 view.move_line_down(&MoveLineDown, cx);
7443 assert_eq!(
7444 view.display_text(cx),
7445 "ccc…eeee\naa…bbb\nfffff\nggggg\n…i\njjjjj"
7446 );
7447 assert_eq!(
7448 view.selected_display_ranges(cx),
7449 vec![
7450 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
7451 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 1),
7452 DisplayPoint::new(3, 2)..DisplayPoint::new(4, 3),
7453 DisplayPoint::new(5, 0)..DisplayPoint::new(5, 2)
7454 ]
7455 );
7456 });
7457
7458 view.update(cx, |view, cx| {
7459 view.move_line_down(&MoveLineDown, cx);
7460 assert_eq!(
7461 view.display_text(cx),
7462 "ccc…eeee\nfffff\naa…bbb\nggggg\n…i\njjjjj"
7463 );
7464 assert_eq!(
7465 view.selected_display_ranges(cx),
7466 vec![
7467 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
7468 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 1),
7469 DisplayPoint::new(3, 2)..DisplayPoint::new(4, 3),
7470 DisplayPoint::new(5, 0)..DisplayPoint::new(5, 2)
7471 ]
7472 );
7473 });
7474
7475 view.update(cx, |view, cx| {
7476 view.move_line_up(&MoveLineUp, cx);
7477 assert_eq!(
7478 view.display_text(cx),
7479 "ccc…eeee\naa…bbb\nggggg\n…i\njjjjj\nfffff"
7480 );
7481 assert_eq!(
7482 view.selected_display_ranges(cx),
7483 vec![
7484 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
7485 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
7486 DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3),
7487 DisplayPoint::new(4, 0)..DisplayPoint::new(4, 2)
7488 ]
7489 );
7490 });
7491 }
7492
7493 #[gpui::test]
7494 fn test_move_line_up_down_with_blocks(cx: &mut gpui::MutableAppContext) {
7495 populate_settings(cx);
7496 let buffer = MultiBuffer::build_simple(&sample_text(10, 5, 'a'), cx);
7497 let snapshot = buffer.read(cx).snapshot(cx);
7498 let (_, editor) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
7499 editor.update(cx, |editor, cx| {
7500 editor.insert_blocks(
7501 [BlockProperties {
7502 position: snapshot.anchor_after(Point::new(2, 0)),
7503 disposition: BlockDisposition::Below,
7504 height: 1,
7505 render: Arc::new(|_| Empty::new().boxed()),
7506 }],
7507 cx,
7508 );
7509 editor.select_ranges([Point::new(2, 0)..Point::new(2, 0)], None, cx);
7510 editor.move_line_down(&MoveLineDown, cx);
7511 });
7512 }
7513
7514 #[gpui::test]
7515 fn test_clipboard(cx: &mut gpui::MutableAppContext) {
7516 populate_settings(cx);
7517 let buffer = MultiBuffer::build_simple("one✅ two three four five six ", cx);
7518 let view = cx
7519 .add_window(Default::default(), |cx| build_editor(buffer.clone(), cx))
7520 .1;
7521
7522 // Cut with three selections. Clipboard text is divided into three slices.
7523 view.update(cx, |view, cx| {
7524 view.select_ranges(vec![0..7, 11..17, 22..27], None, cx);
7525 view.cut(&Cut, cx);
7526 assert_eq!(view.display_text(cx), "two four six ");
7527 });
7528
7529 // Paste with three cursors. Each cursor pastes one slice of the clipboard text.
7530 view.update(cx, |view, cx| {
7531 view.select_ranges(vec![4..4, 9..9, 13..13], None, cx);
7532 view.paste(&Paste, cx);
7533 assert_eq!(view.display_text(cx), "two one✅ four three six five ");
7534 assert_eq!(
7535 view.selected_display_ranges(cx),
7536 &[
7537 DisplayPoint::new(0, 11)..DisplayPoint::new(0, 11),
7538 DisplayPoint::new(0, 22)..DisplayPoint::new(0, 22),
7539 DisplayPoint::new(0, 31)..DisplayPoint::new(0, 31)
7540 ]
7541 );
7542 });
7543
7544 // Paste again but with only two cursors. Since the number of cursors doesn't
7545 // match the number of slices in the clipboard, the entire clipboard text
7546 // is pasted at each cursor.
7547 view.update(cx, |view, cx| {
7548 view.select_ranges(vec![0..0, 31..31], None, cx);
7549 view.handle_input(&Input("( ".into()), cx);
7550 view.paste(&Paste, cx);
7551 view.handle_input(&Input(") ".into()), cx);
7552 assert_eq!(
7553 view.display_text(cx),
7554 "( one✅ three five ) two one✅ four three six five ( one✅ three five ) "
7555 );
7556 });
7557
7558 view.update(cx, |view, cx| {
7559 view.select_ranges(vec![0..0], None, cx);
7560 view.handle_input(&Input("123\n4567\n89\n".into()), cx);
7561 assert_eq!(
7562 view.display_text(cx),
7563 "123\n4567\n89\n( one✅ three five ) two one✅ four three six five ( one✅ three five ) "
7564 );
7565 });
7566
7567 // Cut with three selections, one of which is full-line.
7568 view.update(cx, |view, cx| {
7569 view.select_display_ranges(
7570 &[
7571 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 2),
7572 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
7573 DisplayPoint::new(2, 0)..DisplayPoint::new(2, 1),
7574 ],
7575 cx,
7576 );
7577 view.cut(&Cut, cx);
7578 assert_eq!(
7579 view.display_text(cx),
7580 "13\n9\n( one✅ three five ) two one✅ four three six five ( one✅ three five ) "
7581 );
7582 });
7583
7584 // Paste with three selections, noticing how the copied selection that was full-line
7585 // gets inserted before the second cursor.
7586 view.update(cx, |view, cx| {
7587 view.select_display_ranges(
7588 &[
7589 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
7590 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
7591 DisplayPoint::new(2, 2)..DisplayPoint::new(2, 3),
7592 ],
7593 cx,
7594 );
7595 view.paste(&Paste, cx);
7596 assert_eq!(
7597 view.display_text(cx),
7598 "123\n4567\n9\n( 8ne✅ three five ) two one✅ four three six five ( one✅ three five ) "
7599 );
7600 assert_eq!(
7601 view.selected_display_ranges(cx),
7602 &[
7603 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
7604 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
7605 DisplayPoint::new(3, 3)..DisplayPoint::new(3, 3),
7606 ]
7607 );
7608 });
7609
7610 // Copy with a single cursor only, which writes the whole line into the clipboard.
7611 view.update(cx, |view, cx| {
7612 view.select_display_ranges(&[DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1)], cx);
7613 view.copy(&Copy, cx);
7614 });
7615
7616 // Paste with three selections, noticing how the copied full-line selection is inserted
7617 // before the empty selections but replaces the selection that is non-empty.
7618 view.update(cx, |view, cx| {
7619 view.select_display_ranges(
7620 &[
7621 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
7622 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 2),
7623 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
7624 ],
7625 cx,
7626 );
7627 view.paste(&Paste, cx);
7628 assert_eq!(
7629 view.display_text(cx),
7630 "123\n123\n123\n67\n123\n9\n( 8ne✅ three five ) two one✅ four three six five ( one✅ three five ) "
7631 );
7632 assert_eq!(
7633 view.selected_display_ranges(cx),
7634 &[
7635 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
7636 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
7637 DisplayPoint::new(5, 1)..DisplayPoint::new(5, 1),
7638 ]
7639 );
7640 });
7641 }
7642
7643 #[gpui::test]
7644 fn test_select_all(cx: &mut gpui::MutableAppContext) {
7645 populate_settings(cx);
7646 let buffer = MultiBuffer::build_simple("abc\nde\nfgh", cx);
7647 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
7648 view.update(cx, |view, cx| {
7649 view.select_all(&SelectAll, cx);
7650 assert_eq!(
7651 view.selected_display_ranges(cx),
7652 &[DisplayPoint::new(0, 0)..DisplayPoint::new(2, 3)]
7653 );
7654 });
7655 }
7656
7657 #[gpui::test]
7658 fn test_select_line(cx: &mut gpui::MutableAppContext) {
7659 populate_settings(cx);
7660 let buffer = MultiBuffer::build_simple(&sample_text(6, 5, 'a'), cx);
7661 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
7662 view.update(cx, |view, cx| {
7663 view.select_display_ranges(
7664 &[
7665 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
7666 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
7667 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
7668 DisplayPoint::new(4, 2)..DisplayPoint::new(4, 2),
7669 ],
7670 cx,
7671 );
7672 view.select_line(&SelectLine, cx);
7673 assert_eq!(
7674 view.selected_display_ranges(cx),
7675 vec![
7676 DisplayPoint::new(0, 0)..DisplayPoint::new(2, 0),
7677 DisplayPoint::new(4, 0)..DisplayPoint::new(5, 0),
7678 ]
7679 );
7680 });
7681
7682 view.update(cx, |view, cx| {
7683 view.select_line(&SelectLine, cx);
7684 assert_eq!(
7685 view.selected_display_ranges(cx),
7686 vec![
7687 DisplayPoint::new(0, 0)..DisplayPoint::new(3, 0),
7688 DisplayPoint::new(4, 0)..DisplayPoint::new(5, 5),
7689 ]
7690 );
7691 });
7692
7693 view.update(cx, |view, cx| {
7694 view.select_line(&SelectLine, cx);
7695 assert_eq!(
7696 view.selected_display_ranges(cx),
7697 vec![DisplayPoint::new(0, 0)..DisplayPoint::new(5, 5)]
7698 );
7699 });
7700 }
7701
7702 #[gpui::test]
7703 fn test_split_selection_into_lines(cx: &mut gpui::MutableAppContext) {
7704 populate_settings(cx);
7705 let buffer = MultiBuffer::build_simple(&sample_text(9, 5, 'a'), cx);
7706 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
7707 view.update(cx, |view, cx| {
7708 view.fold_ranges(
7709 vec![
7710 Point::new(0, 2)..Point::new(1, 2),
7711 Point::new(2, 3)..Point::new(4, 1),
7712 Point::new(7, 0)..Point::new(8, 4),
7713 ],
7714 cx,
7715 );
7716 view.select_display_ranges(
7717 &[
7718 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
7719 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
7720 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
7721 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 4),
7722 ],
7723 cx,
7724 );
7725 assert_eq!(view.display_text(cx), "aa…bbb\nccc…eeee\nfffff\nggggg\n…i");
7726 });
7727
7728 view.update(cx, |view, cx| {
7729 view.split_selection_into_lines(&SplitSelectionIntoLines, cx);
7730 assert_eq!(
7731 view.display_text(cx),
7732 "aaaaa\nbbbbb\nccc…eeee\nfffff\nggggg\n…i"
7733 );
7734 assert_eq!(
7735 view.selected_display_ranges(cx),
7736 [
7737 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
7738 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
7739 DisplayPoint::new(2, 0)..DisplayPoint::new(2, 0),
7740 DisplayPoint::new(5, 4)..DisplayPoint::new(5, 4)
7741 ]
7742 );
7743 });
7744
7745 view.update(cx, |view, cx| {
7746 view.select_display_ranges(&[DisplayPoint::new(5, 0)..DisplayPoint::new(0, 1)], cx);
7747 view.split_selection_into_lines(&SplitSelectionIntoLines, cx);
7748 assert_eq!(
7749 view.display_text(cx),
7750 "aaaaa\nbbbbb\nccccc\nddddd\neeeee\nfffff\nggggg\nhhhhh\niiiii"
7751 );
7752 assert_eq!(
7753 view.selected_display_ranges(cx),
7754 [
7755 DisplayPoint::new(0, 5)..DisplayPoint::new(0, 5),
7756 DisplayPoint::new(1, 5)..DisplayPoint::new(1, 5),
7757 DisplayPoint::new(2, 5)..DisplayPoint::new(2, 5),
7758 DisplayPoint::new(3, 5)..DisplayPoint::new(3, 5),
7759 DisplayPoint::new(4, 5)..DisplayPoint::new(4, 5),
7760 DisplayPoint::new(5, 5)..DisplayPoint::new(5, 5),
7761 DisplayPoint::new(6, 5)..DisplayPoint::new(6, 5),
7762 DisplayPoint::new(7, 0)..DisplayPoint::new(7, 0)
7763 ]
7764 );
7765 });
7766 }
7767
7768 #[gpui::test]
7769 fn test_add_selection_above_below(cx: &mut gpui::MutableAppContext) {
7770 populate_settings(cx);
7771 let buffer = MultiBuffer::build_simple("abc\ndefghi\n\njk\nlmno\n", cx);
7772 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
7773
7774 view.update(cx, |view, cx| {
7775 view.select_display_ranges(&[DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)], cx);
7776 });
7777 view.update(cx, |view, cx| {
7778 view.add_selection_above(&AddSelectionAbove, cx);
7779 assert_eq!(
7780 view.selected_display_ranges(cx),
7781 vec![
7782 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
7783 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)
7784 ]
7785 );
7786 });
7787
7788 view.update(cx, |view, cx| {
7789 view.add_selection_above(&AddSelectionAbove, cx);
7790 assert_eq!(
7791 view.selected_display_ranges(cx),
7792 vec![
7793 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
7794 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)
7795 ]
7796 );
7797 });
7798
7799 view.update(cx, |view, cx| {
7800 view.add_selection_below(&AddSelectionBelow, cx);
7801 assert_eq!(
7802 view.selected_display_ranges(cx),
7803 vec![DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)]
7804 );
7805 });
7806
7807 view.update(cx, |view, cx| {
7808 view.add_selection_below(&AddSelectionBelow, cx);
7809 assert_eq!(
7810 view.selected_display_ranges(cx),
7811 vec![
7812 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3),
7813 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 3)
7814 ]
7815 );
7816 });
7817
7818 view.update(cx, |view, cx| {
7819 view.add_selection_below(&AddSelectionBelow, cx);
7820 assert_eq!(
7821 view.selected_display_ranges(cx),
7822 vec![
7823 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3),
7824 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 3)
7825 ]
7826 );
7827 });
7828
7829 view.update(cx, |view, cx| {
7830 view.select_display_ranges(&[DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3)], cx);
7831 });
7832 view.update(cx, |view, cx| {
7833 view.add_selection_below(&AddSelectionBelow, cx);
7834 assert_eq!(
7835 view.selected_display_ranges(cx),
7836 vec![
7837 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
7838 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 3)
7839 ]
7840 );
7841 });
7842
7843 view.update(cx, |view, cx| {
7844 view.add_selection_below(&AddSelectionBelow, cx);
7845 assert_eq!(
7846 view.selected_display_ranges(cx),
7847 vec![
7848 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
7849 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 3)
7850 ]
7851 );
7852 });
7853
7854 view.update(cx, |view, cx| {
7855 view.add_selection_above(&AddSelectionAbove, cx);
7856 assert_eq!(
7857 view.selected_display_ranges(cx),
7858 vec![DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3)]
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![DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3)]
7867 );
7868 });
7869
7870 view.update(cx, |view, cx| {
7871 view.select_display_ranges(&[DisplayPoint::new(0, 1)..DisplayPoint::new(1, 4)], cx);
7872 view.add_selection_below(&AddSelectionBelow, cx);
7873 assert_eq!(
7874 view.selected_display_ranges(cx),
7875 vec![
7876 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
7877 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 4),
7878 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 2),
7879 ]
7880 );
7881 });
7882
7883 view.update(cx, |view, cx| {
7884 view.add_selection_below(&AddSelectionBelow, cx);
7885 assert_eq!(
7886 view.selected_display_ranges(cx),
7887 vec![
7888 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
7889 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 4),
7890 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 2),
7891 DisplayPoint::new(4, 1)..DisplayPoint::new(4, 4),
7892 ]
7893 );
7894 });
7895
7896 view.update(cx, |view, cx| {
7897 view.add_selection_above(&AddSelectionAbove, cx);
7898 assert_eq!(
7899 view.selected_display_ranges(cx),
7900 vec![
7901 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
7902 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 4),
7903 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 2),
7904 ]
7905 );
7906 });
7907
7908 view.update(cx, |view, cx| {
7909 view.select_display_ranges(&[DisplayPoint::new(4, 3)..DisplayPoint::new(1, 1)], cx);
7910 });
7911 view.update(cx, |view, cx| {
7912 view.add_selection_above(&AddSelectionAbove, cx);
7913 assert_eq!(
7914 view.selected_display_ranges(cx),
7915 vec![
7916 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 1),
7917 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 1),
7918 DisplayPoint::new(3, 2)..DisplayPoint::new(3, 1),
7919 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 1),
7920 ]
7921 );
7922 });
7923
7924 view.update(cx, |view, cx| {
7925 view.add_selection_below(&AddSelectionBelow, cx);
7926 assert_eq!(
7927 view.selected_display_ranges(cx),
7928 vec![
7929 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 1),
7930 DisplayPoint::new(3, 2)..DisplayPoint::new(3, 1),
7931 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 1),
7932 ]
7933 );
7934 });
7935 }
7936
7937 #[gpui::test]
7938 async fn test_select_larger_smaller_syntax_node(cx: &mut gpui::TestAppContext) {
7939 cx.update(populate_settings);
7940 let language = Arc::new(Language::new(
7941 LanguageConfig::default(),
7942 Some(tree_sitter_rust::language()),
7943 ));
7944
7945 let text = r#"
7946 use mod1::mod2::{mod3, mod4};
7947
7948 fn fn_1(param1: bool, param2: &str) {
7949 let var1 = "text";
7950 }
7951 "#
7952 .unindent();
7953
7954 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
7955 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
7956 let (_, view) = cx.add_window(|cx| build_editor(buffer, cx));
7957 view.condition(&cx, |view, cx| !view.buffer.read(cx).is_parsing(cx))
7958 .await;
7959
7960 view.update(cx, |view, cx| {
7961 view.select_display_ranges(
7962 &[
7963 DisplayPoint::new(0, 25)..DisplayPoint::new(0, 25),
7964 DisplayPoint::new(2, 24)..DisplayPoint::new(2, 12),
7965 DisplayPoint::new(3, 18)..DisplayPoint::new(3, 18),
7966 ],
7967 cx,
7968 );
7969 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
7970 });
7971 assert_eq!(
7972 view.update(cx, |view, cx| view.selected_display_ranges(cx)),
7973 &[
7974 DisplayPoint::new(0, 23)..DisplayPoint::new(0, 27),
7975 DisplayPoint::new(2, 35)..DisplayPoint::new(2, 7),
7976 DisplayPoint::new(3, 15)..DisplayPoint::new(3, 21),
7977 ]
7978 );
7979
7980 view.update(cx, |view, cx| {
7981 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
7982 });
7983 assert_eq!(
7984 view.update(cx, |view, cx| view.selected_display_ranges(cx)),
7985 &[
7986 DisplayPoint::new(0, 16)..DisplayPoint::new(0, 28),
7987 DisplayPoint::new(4, 1)..DisplayPoint::new(2, 0),
7988 ]
7989 );
7990
7991 view.update(cx, |view, cx| {
7992 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
7993 });
7994 assert_eq!(
7995 view.update(cx, |view, cx| view.selected_display_ranges(cx)),
7996 &[DisplayPoint::new(5, 0)..DisplayPoint::new(0, 0)]
7997 );
7998
7999 // Trying to expand the selected syntax node one more time has no effect.
8000 view.update(cx, |view, cx| {
8001 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
8002 });
8003 assert_eq!(
8004 view.update(cx, |view, cx| view.selected_display_ranges(cx)),
8005 &[DisplayPoint::new(5, 0)..DisplayPoint::new(0, 0)]
8006 );
8007
8008 view.update(cx, |view, cx| {
8009 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
8010 });
8011 assert_eq!(
8012 view.update(cx, |view, cx| view.selected_display_ranges(cx)),
8013 &[
8014 DisplayPoint::new(0, 16)..DisplayPoint::new(0, 28),
8015 DisplayPoint::new(4, 1)..DisplayPoint::new(2, 0),
8016 ]
8017 );
8018
8019 view.update(cx, |view, cx| {
8020 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
8021 });
8022 assert_eq!(
8023 view.update(cx, |view, cx| view.selected_display_ranges(cx)),
8024 &[
8025 DisplayPoint::new(0, 23)..DisplayPoint::new(0, 27),
8026 DisplayPoint::new(2, 35)..DisplayPoint::new(2, 7),
8027 DisplayPoint::new(3, 15)..DisplayPoint::new(3, 21),
8028 ]
8029 );
8030
8031 view.update(cx, |view, cx| {
8032 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
8033 });
8034 assert_eq!(
8035 view.update(cx, |view, cx| view.selected_display_ranges(cx)),
8036 &[
8037 DisplayPoint::new(0, 25)..DisplayPoint::new(0, 25),
8038 DisplayPoint::new(2, 24)..DisplayPoint::new(2, 12),
8039 DisplayPoint::new(3, 18)..DisplayPoint::new(3, 18),
8040 ]
8041 );
8042
8043 // Trying to shrink the selected syntax node one more time has no effect.
8044 view.update(cx, |view, cx| {
8045 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
8046 });
8047 assert_eq!(
8048 view.update(cx, |view, cx| view.selected_display_ranges(cx)),
8049 &[
8050 DisplayPoint::new(0, 25)..DisplayPoint::new(0, 25),
8051 DisplayPoint::new(2, 24)..DisplayPoint::new(2, 12),
8052 DisplayPoint::new(3, 18)..DisplayPoint::new(3, 18),
8053 ]
8054 );
8055
8056 // Ensure that we keep expanding the selection if the larger selection starts or ends within
8057 // a fold.
8058 view.update(cx, |view, cx| {
8059 view.fold_ranges(
8060 vec![
8061 Point::new(0, 21)..Point::new(0, 24),
8062 Point::new(3, 20)..Point::new(3, 22),
8063 ],
8064 cx,
8065 );
8066 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
8067 });
8068 assert_eq!(
8069 view.update(cx, |view, cx| view.selected_display_ranges(cx)),
8070 &[
8071 DisplayPoint::new(0, 16)..DisplayPoint::new(0, 28),
8072 DisplayPoint::new(2, 35)..DisplayPoint::new(2, 7),
8073 DisplayPoint::new(3, 4)..DisplayPoint::new(3, 23),
8074 ]
8075 );
8076 }
8077
8078 #[gpui::test]
8079 async fn test_autoindent_selections(cx: &mut gpui::TestAppContext) {
8080 cx.update(populate_settings);
8081 let language = Arc::new(
8082 Language::new(
8083 LanguageConfig {
8084 brackets: vec![
8085 BracketPair {
8086 start: "{".to_string(),
8087 end: "}".to_string(),
8088 close: false,
8089 newline: true,
8090 },
8091 BracketPair {
8092 start: "(".to_string(),
8093 end: ")".to_string(),
8094 close: false,
8095 newline: true,
8096 },
8097 ],
8098 ..Default::default()
8099 },
8100 Some(tree_sitter_rust::language()),
8101 )
8102 .with_indents_query(
8103 r#"
8104 (_ "(" ")" @end) @indent
8105 (_ "{" "}" @end) @indent
8106 "#,
8107 )
8108 .unwrap(),
8109 );
8110
8111 let text = "fn a() {}";
8112
8113 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
8114 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
8115 let (_, editor) = cx.add_window(|cx| build_editor(buffer, cx));
8116 editor
8117 .condition(&cx, |editor, cx| !editor.buffer.read(cx).is_parsing(cx))
8118 .await;
8119
8120 editor.update(cx, |editor, cx| {
8121 editor.select_ranges([5..5, 8..8, 9..9], None, cx);
8122 editor.newline(&Newline, cx);
8123 assert_eq!(editor.text(cx), "fn a(\n \n) {\n \n}\n");
8124 assert_eq!(
8125 editor.selected_ranges(cx),
8126 &[
8127 Point::new(1, 4)..Point::new(1, 4),
8128 Point::new(3, 4)..Point::new(3, 4),
8129 Point::new(5, 0)..Point::new(5, 0)
8130 ]
8131 );
8132 });
8133 }
8134
8135 #[gpui::test]
8136 async fn test_autoclose_pairs(cx: &mut gpui::TestAppContext) {
8137 cx.update(populate_settings);
8138 let language = Arc::new(Language::new(
8139 LanguageConfig {
8140 brackets: vec![
8141 BracketPair {
8142 start: "{".to_string(),
8143 end: "}".to_string(),
8144 close: true,
8145 newline: true,
8146 },
8147 BracketPair {
8148 start: "/*".to_string(),
8149 end: " */".to_string(),
8150 close: true,
8151 newline: true,
8152 },
8153 ],
8154 autoclose_before: "})]".to_string(),
8155 ..Default::default()
8156 },
8157 Some(tree_sitter_rust::language()),
8158 ));
8159
8160 let text = r#"
8161 a
8162
8163 /
8164
8165 "#
8166 .unindent();
8167
8168 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
8169 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
8170 let (_, view) = cx.add_window(|cx| build_editor(buffer, cx));
8171 view.condition(&cx, |view, cx| !view.buffer.read(cx).is_parsing(cx))
8172 .await;
8173
8174 view.update(cx, |view, cx| {
8175 view.select_display_ranges(
8176 &[
8177 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
8178 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
8179 ],
8180 cx,
8181 );
8182
8183 view.handle_input(&Input("{".to_string()), cx);
8184 view.handle_input(&Input("{".to_string()), cx);
8185 view.handle_input(&Input("{".to_string()), cx);
8186 assert_eq!(
8187 view.text(cx),
8188 "
8189 {{{}}}
8190 {{{}}}
8191 /
8192
8193 "
8194 .unindent()
8195 );
8196
8197 view.move_right(&MoveRight, cx);
8198 view.handle_input(&Input("}".to_string()), cx);
8199 view.handle_input(&Input("}".to_string()), cx);
8200 view.handle_input(&Input("}".to_string()), cx);
8201 assert_eq!(
8202 view.text(cx),
8203 "
8204 {{{}}}}
8205 {{{}}}}
8206 /
8207
8208 "
8209 .unindent()
8210 );
8211
8212 view.undo(&Undo, cx);
8213 view.handle_input(&Input("/".to_string()), cx);
8214 view.handle_input(&Input("*".to_string()), cx);
8215 assert_eq!(
8216 view.text(cx),
8217 "
8218 /* */
8219 /* */
8220 /
8221
8222 "
8223 .unindent()
8224 );
8225
8226 view.undo(&Undo, cx);
8227 view.select_display_ranges(
8228 &[
8229 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
8230 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
8231 ],
8232 cx,
8233 );
8234 view.handle_input(&Input("*".to_string()), cx);
8235 assert_eq!(
8236 view.text(cx),
8237 "
8238 a
8239
8240 /*
8241 *
8242 "
8243 .unindent()
8244 );
8245
8246 // Don't autoclose if the next character isn't whitespace and isn't
8247 // listed in the language's "autoclose_before" section.
8248 view.finalize_last_transaction(cx);
8249 view.select_display_ranges(&[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)], cx);
8250 view.handle_input(&Input("{".to_string()), cx);
8251 assert_eq!(
8252 view.text(cx),
8253 "
8254 {a
8255
8256 /*
8257 *
8258 "
8259 .unindent()
8260 );
8261
8262 view.undo(&Undo, cx);
8263 view.select_display_ranges(&[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1)], cx);
8264 view.handle_input(&Input("{".to_string()), cx);
8265 assert_eq!(
8266 view.text(cx),
8267 "
8268 {a}
8269
8270 /*
8271 *
8272 "
8273 .unindent()
8274 );
8275 assert_eq!(
8276 view.selected_display_ranges(cx),
8277 [DisplayPoint::new(0, 1)..DisplayPoint::new(0, 2)]
8278 );
8279 });
8280 }
8281
8282 #[gpui::test]
8283 async fn test_snippets(cx: &mut gpui::TestAppContext) {
8284 cx.update(populate_settings);
8285
8286 let text = "
8287 a. b
8288 a. b
8289 a. b
8290 "
8291 .unindent();
8292 let buffer = cx.update(|cx| MultiBuffer::build_simple(&text, cx));
8293 let (_, editor) = cx.add_window(|cx| build_editor(buffer, cx));
8294
8295 editor.update(cx, |editor, cx| {
8296 let buffer = &editor.snapshot(cx).buffer_snapshot;
8297 let snippet = Snippet::parse("f(${1:one}, ${2:two}, ${1:three})$0").unwrap();
8298 let insertion_ranges = [
8299 Point::new(0, 2).to_offset(buffer)..Point::new(0, 2).to_offset(buffer),
8300 Point::new(1, 2).to_offset(buffer)..Point::new(1, 2).to_offset(buffer),
8301 Point::new(2, 2).to_offset(buffer)..Point::new(2, 2).to_offset(buffer),
8302 ];
8303
8304 editor
8305 .insert_snippet(&insertion_ranges, snippet, cx)
8306 .unwrap();
8307 assert_eq!(
8308 editor.text(cx),
8309 "
8310 a.f(one, two, three) b
8311 a.f(one, two, three) b
8312 a.f(one, two, three) b
8313 "
8314 .unindent()
8315 );
8316 assert_eq!(
8317 editor.selected_ranges::<Point>(cx),
8318 &[
8319 Point::new(0, 4)..Point::new(0, 7),
8320 Point::new(0, 14)..Point::new(0, 19),
8321 Point::new(1, 4)..Point::new(1, 7),
8322 Point::new(1, 14)..Point::new(1, 19),
8323 Point::new(2, 4)..Point::new(2, 7),
8324 Point::new(2, 14)..Point::new(2, 19),
8325 ]
8326 );
8327
8328 // Can't move earlier than the first tab stop
8329 editor.move_to_prev_snippet_tabstop(cx);
8330 assert_eq!(
8331 editor.selected_ranges::<Point>(cx),
8332 &[
8333 Point::new(0, 4)..Point::new(0, 7),
8334 Point::new(0, 14)..Point::new(0, 19),
8335 Point::new(1, 4)..Point::new(1, 7),
8336 Point::new(1, 14)..Point::new(1, 19),
8337 Point::new(2, 4)..Point::new(2, 7),
8338 Point::new(2, 14)..Point::new(2, 19),
8339 ]
8340 );
8341
8342 assert!(editor.move_to_next_snippet_tabstop(cx));
8343 assert_eq!(
8344 editor.selected_ranges::<Point>(cx),
8345 &[
8346 Point::new(0, 9)..Point::new(0, 12),
8347 Point::new(1, 9)..Point::new(1, 12),
8348 Point::new(2, 9)..Point::new(2, 12)
8349 ]
8350 );
8351
8352 editor.move_to_prev_snippet_tabstop(cx);
8353 assert_eq!(
8354 editor.selected_ranges::<Point>(cx),
8355 &[
8356 Point::new(0, 4)..Point::new(0, 7),
8357 Point::new(0, 14)..Point::new(0, 19),
8358 Point::new(1, 4)..Point::new(1, 7),
8359 Point::new(1, 14)..Point::new(1, 19),
8360 Point::new(2, 4)..Point::new(2, 7),
8361 Point::new(2, 14)..Point::new(2, 19),
8362 ]
8363 );
8364
8365 assert!(editor.move_to_next_snippet_tabstop(cx));
8366 assert!(editor.move_to_next_snippet_tabstop(cx));
8367 assert_eq!(
8368 editor.selected_ranges::<Point>(cx),
8369 &[
8370 Point::new(0, 20)..Point::new(0, 20),
8371 Point::new(1, 20)..Point::new(1, 20),
8372 Point::new(2, 20)..Point::new(2, 20)
8373 ]
8374 );
8375
8376 // As soon as the last tab stop is reached, snippet state is gone
8377 editor.move_to_prev_snippet_tabstop(cx);
8378 assert_eq!(
8379 editor.selected_ranges::<Point>(cx),
8380 &[
8381 Point::new(0, 20)..Point::new(0, 20),
8382 Point::new(1, 20)..Point::new(1, 20),
8383 Point::new(2, 20)..Point::new(2, 20)
8384 ]
8385 );
8386 });
8387 }
8388
8389 #[gpui::test]
8390 async fn test_completion(cx: &mut gpui::TestAppContext) {
8391 cx.update(populate_settings);
8392
8393 let (mut language_server_config, mut fake_servers) = LanguageServerConfig::fake();
8394 language_server_config.set_fake_capabilities(lsp::ServerCapabilities {
8395 completion_provider: Some(lsp::CompletionOptions {
8396 trigger_characters: Some(vec![".".to_string(), ":".to_string()]),
8397 ..Default::default()
8398 }),
8399 ..Default::default()
8400 });
8401 let language = Arc::new(Language::new(
8402 LanguageConfig {
8403 name: "Rust".into(),
8404 path_suffixes: vec!["rs".to_string()],
8405 language_server: Some(language_server_config),
8406 ..Default::default()
8407 },
8408 Some(tree_sitter_rust::language()),
8409 ));
8410
8411 let text = "
8412 one
8413 two
8414 three
8415 "
8416 .unindent();
8417
8418 let fs = FakeFs::new(cx.background().clone());
8419 fs.insert_file("/file.rs", text).await;
8420
8421 let project = Project::test(fs, cx);
8422 project.update(cx, |project, _| project.languages().add(language));
8423
8424 let worktree_id = project
8425 .update(cx, |project, cx| {
8426 project.find_or_create_local_worktree("/file.rs", true, cx)
8427 })
8428 .await
8429 .unwrap()
8430 .0
8431 .read_with(cx, |tree, _| tree.id());
8432 let buffer = project
8433 .update(cx, |project, cx| project.open_buffer((worktree_id, ""), cx))
8434 .await
8435 .unwrap();
8436 let mut fake_server = fake_servers.next().await.unwrap();
8437
8438 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
8439 let (_, editor) = cx.add_window(|cx| build_editor(buffer, cx));
8440
8441 editor.update(cx, |editor, cx| {
8442 editor.project = Some(project);
8443 editor.select_ranges([Point::new(0, 3)..Point::new(0, 3)], None, cx);
8444 editor.handle_input(&Input(".".to_string()), cx);
8445 });
8446
8447 handle_completion_request(
8448 &mut fake_server,
8449 "/file.rs",
8450 Point::new(0, 4),
8451 vec![
8452 (Point::new(0, 4)..Point::new(0, 4), "first_completion"),
8453 (Point::new(0, 4)..Point::new(0, 4), "second_completion"),
8454 ],
8455 )
8456 .await;
8457 editor
8458 .condition(&cx, |editor, _| editor.context_menu_visible())
8459 .await;
8460
8461 let apply_additional_edits = editor.update(cx, |editor, cx| {
8462 editor.move_down(&MoveDown, cx);
8463 let apply_additional_edits = editor
8464 .confirm_completion(&ConfirmCompletion(None), cx)
8465 .unwrap();
8466 assert_eq!(
8467 editor.text(cx),
8468 "
8469 one.second_completion
8470 two
8471 three
8472 "
8473 .unindent()
8474 );
8475 apply_additional_edits
8476 });
8477
8478 handle_resolve_completion_request(
8479 &mut fake_server,
8480 Some((Point::new(2, 5)..Point::new(2, 5), "\nadditional edit")),
8481 )
8482 .await;
8483 apply_additional_edits.await.unwrap();
8484 assert_eq!(
8485 editor.read_with(cx, |editor, cx| editor.text(cx)),
8486 "
8487 one.second_completion
8488 two
8489 three
8490 additional edit
8491 "
8492 .unindent()
8493 );
8494
8495 editor.update(cx, |editor, cx| {
8496 editor.select_ranges(
8497 [
8498 Point::new(1, 3)..Point::new(1, 3),
8499 Point::new(2, 5)..Point::new(2, 5),
8500 ],
8501 None,
8502 cx,
8503 );
8504
8505 editor.handle_input(&Input(" ".to_string()), cx);
8506 assert!(editor.context_menu.is_none());
8507 editor.handle_input(&Input("s".to_string()), cx);
8508 assert!(editor.context_menu.is_none());
8509 });
8510
8511 handle_completion_request(
8512 &mut fake_server,
8513 "/file.rs",
8514 Point::new(2, 7),
8515 vec![
8516 (Point::new(2, 6)..Point::new(2, 7), "fourth_completion"),
8517 (Point::new(2, 6)..Point::new(2, 7), "fifth_completion"),
8518 (Point::new(2, 6)..Point::new(2, 7), "sixth_completion"),
8519 ],
8520 )
8521 .await;
8522 editor
8523 .condition(&cx, |editor, _| editor.context_menu_visible())
8524 .await;
8525
8526 editor.update(cx, |editor, cx| {
8527 editor.handle_input(&Input("i".to_string()), cx);
8528 });
8529
8530 handle_completion_request(
8531 &mut fake_server,
8532 "/file.rs",
8533 Point::new(2, 8),
8534 vec![
8535 (Point::new(2, 6)..Point::new(2, 8), "fourth_completion"),
8536 (Point::new(2, 6)..Point::new(2, 8), "fifth_completion"),
8537 (Point::new(2, 6)..Point::new(2, 8), "sixth_completion"),
8538 ],
8539 )
8540 .await;
8541 editor
8542 .condition(&cx, |editor, _| editor.context_menu_visible())
8543 .await;
8544
8545 let apply_additional_edits = editor.update(cx, |editor, cx| {
8546 let apply_additional_edits = editor
8547 .confirm_completion(&ConfirmCompletion(None), cx)
8548 .unwrap();
8549 assert_eq!(
8550 editor.text(cx),
8551 "
8552 one.second_completion
8553 two sixth_completion
8554 three sixth_completion
8555 additional edit
8556 "
8557 .unindent()
8558 );
8559 apply_additional_edits
8560 });
8561 handle_resolve_completion_request(&mut fake_server, None).await;
8562 apply_additional_edits.await.unwrap();
8563
8564 async fn handle_completion_request(
8565 fake: &mut FakeLanguageServer,
8566 path: &'static str,
8567 position: Point,
8568 completions: Vec<(Range<Point>, &'static str)>,
8569 ) {
8570 fake.handle_request::<lsp::request::Completion, _>(move |params, _| {
8571 assert_eq!(
8572 params.text_document_position.text_document.uri,
8573 lsp::Url::from_file_path(path).unwrap()
8574 );
8575 assert_eq!(
8576 params.text_document_position.position,
8577 lsp::Position::new(position.row, position.column)
8578 );
8579 Some(lsp::CompletionResponse::Array(
8580 completions
8581 .iter()
8582 .map(|(range, new_text)| lsp::CompletionItem {
8583 label: new_text.to_string(),
8584 text_edit: Some(lsp::CompletionTextEdit::Edit(lsp::TextEdit {
8585 range: lsp::Range::new(
8586 lsp::Position::new(range.start.row, range.start.column),
8587 lsp::Position::new(range.start.row, range.start.column),
8588 ),
8589 new_text: new_text.to_string(),
8590 })),
8591 ..Default::default()
8592 })
8593 .collect(),
8594 ))
8595 })
8596 .next()
8597 .await;
8598 }
8599
8600 async fn handle_resolve_completion_request(
8601 fake: &mut FakeLanguageServer,
8602 edit: Option<(Range<Point>, &'static str)>,
8603 ) {
8604 fake.handle_request::<lsp::request::ResolveCompletionItem, _>(move |_, _| {
8605 lsp::CompletionItem {
8606 additional_text_edits: edit.clone().map(|(range, new_text)| {
8607 vec![lsp::TextEdit::new(
8608 lsp::Range::new(
8609 lsp::Position::new(range.start.row, range.start.column),
8610 lsp::Position::new(range.end.row, range.end.column),
8611 ),
8612 new_text.to_string(),
8613 )]
8614 }),
8615 ..Default::default()
8616 }
8617 })
8618 .next()
8619 .await;
8620 }
8621 }
8622
8623 #[gpui::test]
8624 async fn test_toggle_comment(cx: &mut gpui::TestAppContext) {
8625 cx.update(populate_settings);
8626 let language = Arc::new(Language::new(
8627 LanguageConfig {
8628 line_comment: Some("// ".to_string()),
8629 ..Default::default()
8630 },
8631 Some(tree_sitter_rust::language()),
8632 ));
8633
8634 let text = "
8635 fn a() {
8636 //b();
8637 // c();
8638 // d();
8639 }
8640 "
8641 .unindent();
8642
8643 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
8644 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
8645 let (_, view) = cx.add_window(|cx| build_editor(buffer, cx));
8646
8647 view.update(cx, |editor, cx| {
8648 // If multiple selections intersect a line, the line is only
8649 // toggled once.
8650 editor.select_display_ranges(
8651 &[
8652 DisplayPoint::new(1, 3)..DisplayPoint::new(2, 3),
8653 DisplayPoint::new(3, 5)..DisplayPoint::new(3, 6),
8654 ],
8655 cx,
8656 );
8657 editor.toggle_comments(&ToggleComments, cx);
8658 assert_eq!(
8659 editor.text(cx),
8660 "
8661 fn a() {
8662 b();
8663 c();
8664 d();
8665 }
8666 "
8667 .unindent()
8668 );
8669
8670 // The comment prefix is inserted at the same column for every line
8671 // in a selection.
8672 editor.select_display_ranges(&[DisplayPoint::new(1, 3)..DisplayPoint::new(3, 6)], cx);
8673 editor.toggle_comments(&ToggleComments, cx);
8674 assert_eq!(
8675 editor.text(cx),
8676 "
8677 fn a() {
8678 // b();
8679 // c();
8680 // d();
8681 }
8682 "
8683 .unindent()
8684 );
8685
8686 // If a selection ends at the beginning of a line, that line is not toggled.
8687 editor.select_display_ranges(&[DisplayPoint::new(2, 0)..DisplayPoint::new(3, 0)], cx);
8688 editor.toggle_comments(&ToggleComments, cx);
8689 assert_eq!(
8690 editor.text(cx),
8691 "
8692 fn a() {
8693 // b();
8694 c();
8695 // d();
8696 }
8697 "
8698 .unindent()
8699 );
8700 });
8701 }
8702
8703 #[gpui::test]
8704 fn test_editing_disjoint_excerpts(cx: &mut gpui::MutableAppContext) {
8705 populate_settings(cx);
8706 let buffer = cx.add_model(|cx| Buffer::new(0, sample_text(3, 4, 'a'), cx));
8707 let multibuffer = cx.add_model(|cx| {
8708 let mut multibuffer = MultiBuffer::new(0);
8709 multibuffer.push_excerpts(
8710 buffer.clone(),
8711 [
8712 Point::new(0, 0)..Point::new(0, 4),
8713 Point::new(1, 0)..Point::new(1, 4),
8714 ],
8715 cx,
8716 );
8717 multibuffer
8718 });
8719
8720 assert_eq!(multibuffer.read(cx).read(cx).text(), "aaaa\nbbbb");
8721
8722 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(multibuffer, cx));
8723 view.update(cx, |view, cx| {
8724 assert_eq!(view.text(cx), "aaaa\nbbbb");
8725 view.select_ranges(
8726 [
8727 Point::new(0, 0)..Point::new(0, 0),
8728 Point::new(1, 0)..Point::new(1, 0),
8729 ],
8730 None,
8731 cx,
8732 );
8733
8734 view.handle_input(&Input("X".to_string()), cx);
8735 assert_eq!(view.text(cx), "Xaaaa\nXbbbb");
8736 assert_eq!(
8737 view.selected_ranges(cx),
8738 [
8739 Point::new(0, 1)..Point::new(0, 1),
8740 Point::new(1, 1)..Point::new(1, 1),
8741 ]
8742 )
8743 });
8744 }
8745
8746 #[gpui::test]
8747 fn test_editing_overlapping_excerpts(cx: &mut gpui::MutableAppContext) {
8748 populate_settings(cx);
8749 let buffer = cx.add_model(|cx| Buffer::new(0, sample_text(3, 4, 'a'), cx));
8750 let multibuffer = cx.add_model(|cx| {
8751 let mut multibuffer = MultiBuffer::new(0);
8752 multibuffer.push_excerpts(
8753 buffer,
8754 [
8755 Point::new(0, 0)..Point::new(1, 4),
8756 Point::new(1, 0)..Point::new(2, 4),
8757 ],
8758 cx,
8759 );
8760 multibuffer
8761 });
8762
8763 assert_eq!(
8764 multibuffer.read(cx).read(cx).text(),
8765 "aaaa\nbbbb\nbbbb\ncccc"
8766 );
8767
8768 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(multibuffer, cx));
8769 view.update(cx, |view, cx| {
8770 view.select_ranges(
8771 [
8772 Point::new(1, 1)..Point::new(1, 1),
8773 Point::new(2, 3)..Point::new(2, 3),
8774 ],
8775 None,
8776 cx,
8777 );
8778
8779 view.handle_input(&Input("X".to_string()), cx);
8780 assert_eq!(view.text(cx), "aaaa\nbXbbXb\nbXbbXb\ncccc");
8781 assert_eq!(
8782 view.selected_ranges(cx),
8783 [
8784 Point::new(1, 2)..Point::new(1, 2),
8785 Point::new(2, 5)..Point::new(2, 5),
8786 ]
8787 );
8788
8789 view.newline(&Newline, cx);
8790 assert_eq!(view.text(cx), "aaaa\nbX\nbbX\nb\nbX\nbbX\nb\ncccc");
8791 assert_eq!(
8792 view.selected_ranges(cx),
8793 [
8794 Point::new(2, 0)..Point::new(2, 0),
8795 Point::new(6, 0)..Point::new(6, 0),
8796 ]
8797 );
8798 });
8799 }
8800
8801 #[gpui::test]
8802 fn test_refresh_selections(cx: &mut gpui::MutableAppContext) {
8803 populate_settings(cx);
8804 let buffer = cx.add_model(|cx| Buffer::new(0, sample_text(3, 4, 'a'), cx));
8805 let mut excerpt1_id = None;
8806 let multibuffer = cx.add_model(|cx| {
8807 let mut multibuffer = MultiBuffer::new(0);
8808 excerpt1_id = multibuffer
8809 .push_excerpts(
8810 buffer.clone(),
8811 [
8812 Point::new(0, 0)..Point::new(1, 4),
8813 Point::new(1, 0)..Point::new(2, 4),
8814 ],
8815 cx,
8816 )
8817 .into_iter()
8818 .next();
8819 multibuffer
8820 });
8821 assert_eq!(
8822 multibuffer.read(cx).read(cx).text(),
8823 "aaaa\nbbbb\nbbbb\ncccc"
8824 );
8825 let (_, editor) = cx.add_window(Default::default(), |cx| {
8826 let mut editor = build_editor(multibuffer.clone(), cx);
8827 editor.select_ranges(
8828 [
8829 Point::new(1, 3)..Point::new(1, 3),
8830 Point::new(2, 1)..Point::new(2, 1),
8831 ],
8832 None,
8833 cx,
8834 );
8835 editor
8836 });
8837
8838 // Refreshing selections is a no-op when excerpts haven't changed.
8839 editor.update(cx, |editor, cx| {
8840 editor.refresh_selections(cx);
8841 assert_eq!(
8842 editor.selected_ranges(cx),
8843 [
8844 Point::new(1, 3)..Point::new(1, 3),
8845 Point::new(2, 1)..Point::new(2, 1),
8846 ]
8847 );
8848 });
8849
8850 multibuffer.update(cx, |multibuffer, cx| {
8851 multibuffer.remove_excerpts([&excerpt1_id.unwrap()], cx);
8852 });
8853 editor.update(cx, |editor, cx| {
8854 // Removing an excerpt causes the first selection to become degenerate.
8855 assert_eq!(
8856 editor.selected_ranges(cx),
8857 [
8858 Point::new(0, 0)..Point::new(0, 0),
8859 Point::new(0, 1)..Point::new(0, 1)
8860 ]
8861 );
8862
8863 // Refreshing selections will relocate the first selection to the original buffer
8864 // location.
8865 editor.refresh_selections(cx);
8866 assert_eq!(
8867 editor.selected_ranges(cx),
8868 [
8869 Point::new(0, 1)..Point::new(0, 1),
8870 Point::new(0, 3)..Point::new(0, 3)
8871 ]
8872 );
8873 });
8874 }
8875
8876 #[gpui::test]
8877 async fn test_extra_newline_insertion(cx: &mut gpui::TestAppContext) {
8878 cx.update(populate_settings);
8879 let language = Arc::new(Language::new(
8880 LanguageConfig {
8881 brackets: vec![
8882 BracketPair {
8883 start: "{".to_string(),
8884 end: "}".to_string(),
8885 close: true,
8886 newline: true,
8887 },
8888 BracketPair {
8889 start: "/* ".to_string(),
8890 end: " */".to_string(),
8891 close: true,
8892 newline: true,
8893 },
8894 ],
8895 ..Default::default()
8896 },
8897 Some(tree_sitter_rust::language()),
8898 ));
8899
8900 let text = concat!(
8901 "{ }\n", // Suppress rustfmt
8902 " x\n", //
8903 " /* */\n", //
8904 "x\n", //
8905 "{{} }\n", //
8906 );
8907
8908 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
8909 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
8910 let (_, view) = cx.add_window(|cx| build_editor(buffer, cx));
8911 view.condition(&cx, |view, cx| !view.buffer.read(cx).is_parsing(cx))
8912 .await;
8913
8914 view.update(cx, |view, cx| {
8915 view.select_display_ranges(
8916 &[
8917 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 3),
8918 DisplayPoint::new(2, 5)..DisplayPoint::new(2, 5),
8919 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 4),
8920 ],
8921 cx,
8922 );
8923 view.newline(&Newline, cx);
8924
8925 assert_eq!(
8926 view.buffer().read(cx).read(cx).text(),
8927 concat!(
8928 "{ \n", // Suppress rustfmt
8929 "\n", //
8930 "}\n", //
8931 " x\n", //
8932 " /* \n", //
8933 " \n", //
8934 " */\n", //
8935 "x\n", //
8936 "{{} \n", //
8937 "}\n", //
8938 )
8939 );
8940 });
8941 }
8942
8943 #[gpui::test]
8944 fn test_highlighted_ranges(cx: &mut gpui::MutableAppContext) {
8945 let buffer = MultiBuffer::build_simple(&sample_text(16, 8, 'a'), cx);
8946 populate_settings(cx);
8947 let (_, editor) = cx.add_window(Default::default(), |cx| build_editor(buffer.clone(), cx));
8948
8949 editor.update(cx, |editor, cx| {
8950 struct Type1;
8951 struct Type2;
8952
8953 let buffer = buffer.read(cx).snapshot(cx);
8954
8955 let anchor_range = |range: Range<Point>| {
8956 buffer.anchor_after(range.start)..buffer.anchor_after(range.end)
8957 };
8958
8959 editor.highlight_background::<Type1>(
8960 vec![
8961 anchor_range(Point::new(2, 1)..Point::new(2, 3)),
8962 anchor_range(Point::new(4, 2)..Point::new(4, 4)),
8963 anchor_range(Point::new(6, 3)..Point::new(6, 5)),
8964 anchor_range(Point::new(8, 4)..Point::new(8, 6)),
8965 ],
8966 Color::red(),
8967 cx,
8968 );
8969 editor.highlight_background::<Type2>(
8970 vec![
8971 anchor_range(Point::new(3, 2)..Point::new(3, 5)),
8972 anchor_range(Point::new(5, 3)..Point::new(5, 6)),
8973 anchor_range(Point::new(7, 4)..Point::new(7, 7)),
8974 anchor_range(Point::new(9, 5)..Point::new(9, 8)),
8975 ],
8976 Color::green(),
8977 cx,
8978 );
8979
8980 let snapshot = editor.snapshot(cx);
8981 let mut highlighted_ranges = editor.background_highlights_in_range(
8982 anchor_range(Point::new(3, 4)..Point::new(7, 4)),
8983 &snapshot,
8984 );
8985 // Enforce a consistent ordering based on color without relying on the ordering of the
8986 // highlight's `TypeId` which is non-deterministic.
8987 highlighted_ranges.sort_unstable_by_key(|(_, color)| *color);
8988 assert_eq!(
8989 highlighted_ranges,
8990 &[
8991 (
8992 DisplayPoint::new(3, 2)..DisplayPoint::new(3, 5),
8993 Color::green(),
8994 ),
8995 (
8996 DisplayPoint::new(5, 3)..DisplayPoint::new(5, 6),
8997 Color::green(),
8998 ),
8999 (
9000 DisplayPoint::new(4, 2)..DisplayPoint::new(4, 4),
9001 Color::red(),
9002 ),
9003 (
9004 DisplayPoint::new(6, 3)..DisplayPoint::new(6, 5),
9005 Color::red(),
9006 ),
9007 ]
9008 );
9009 assert_eq!(
9010 editor.background_highlights_in_range(
9011 anchor_range(Point::new(5, 6)..Point::new(6, 4)),
9012 &snapshot,
9013 ),
9014 &[(
9015 DisplayPoint::new(6, 3)..DisplayPoint::new(6, 5),
9016 Color::red(),
9017 )]
9018 );
9019 });
9020 }
9021
9022 #[test]
9023 fn test_combine_syntax_and_fuzzy_match_highlights() {
9024 let string = "abcdefghijklmnop";
9025 let syntax_ranges = [
9026 (
9027 0..3,
9028 HighlightStyle {
9029 color: Some(Color::red()),
9030 ..Default::default()
9031 },
9032 ),
9033 (
9034 4..8,
9035 HighlightStyle {
9036 color: Some(Color::green()),
9037 ..Default::default()
9038 },
9039 ),
9040 ];
9041 let match_indices = [4, 6, 7, 8];
9042 assert_eq!(
9043 combine_syntax_and_fuzzy_match_highlights(
9044 &string,
9045 Default::default(),
9046 syntax_ranges.into_iter(),
9047 &match_indices,
9048 ),
9049 &[
9050 (
9051 0..3,
9052 HighlightStyle {
9053 color: Some(Color::red()),
9054 ..Default::default()
9055 },
9056 ),
9057 (
9058 4..5,
9059 HighlightStyle {
9060 color: Some(Color::green()),
9061 weight: Some(fonts::Weight::BOLD),
9062 ..Default::default()
9063 },
9064 ),
9065 (
9066 5..6,
9067 HighlightStyle {
9068 color: Some(Color::green()),
9069 ..Default::default()
9070 },
9071 ),
9072 (
9073 6..8,
9074 HighlightStyle {
9075 color: Some(Color::green()),
9076 weight: Some(fonts::Weight::BOLD),
9077 ..Default::default()
9078 },
9079 ),
9080 (
9081 8..9,
9082 HighlightStyle {
9083 weight: Some(fonts::Weight::BOLD),
9084 ..Default::default()
9085 },
9086 ),
9087 ]
9088 );
9089 }
9090
9091 fn empty_range(row: usize, column: usize) -> Range<DisplayPoint> {
9092 let point = DisplayPoint::new(row as u32, column as u32);
9093 point..point
9094 }
9095
9096 fn build_editor(buffer: ModelHandle<MultiBuffer>, cx: &mut ViewContext<Editor>) -> Editor {
9097 Editor::new(EditorMode::Full, buffer, None, None, cx)
9098 }
9099
9100 fn populate_settings(cx: &mut gpui::MutableAppContext) {
9101 let settings = Settings::test(cx);
9102 cx.set_global(settings);
9103 }
9104}
9105
9106trait RangeExt<T> {
9107 fn sorted(&self) -> Range<T>;
9108 fn to_inclusive(&self) -> RangeInclusive<T>;
9109}
9110
9111impl<T: Ord + Clone> RangeExt<T> for Range<T> {
9112 fn sorted(&self) -> Self {
9113 cmp::min(&self.start, &self.end).clone()..cmp::max(&self.start, &self.end).clone()
9114 }
9115
9116 fn to_inclusive(&self) -> RangeInclusive<T> {
9117 self.start.clone()..=self.end.clone()
9118 }
9119}