1pub mod display_map;
2mod element;
3pub mod items;
4pub mod movement;
5mod multi_buffer;
6
7#[cfg(test)]
8mod test;
9
10use aho_corasick::AhoCorasick;
11use anyhow::Result;
12use clock::ReplicaId;
13use collections::{BTreeMap, Bound, HashMap, HashSet};
14pub use display_map::DisplayPoint;
15use display_map::*;
16pub use element::*;
17use fuzzy::{StringMatch, StringMatchCandidate};
18use gpui::{
19 action,
20 color::Color,
21 elements::*,
22 executor,
23 fonts::{self, HighlightStyle, TextStyle},
24 geometry::vector::{vec2f, Vector2F},
25 keymap::Binding,
26 platform::CursorStyle,
27 text_layout, AppContext, AsyncAppContext, ClipboardItem, Element, ElementBox, Entity,
28 ModelHandle, MutableAppContext, RenderContext, Task, View, ViewContext, ViewHandle,
29 WeakViewHandle,
30};
31use itertools::Itertools as _;
32pub use language::{char_kind, CharKind};
33use language::{
34 BracketPair, Buffer, CodeAction, CodeLabel, Completion, Diagnostic, DiagnosticSeverity,
35 Language, OffsetRangeExt, Point, Selection, SelectionGoal, TransactionId,
36};
37use multi_buffer::MultiBufferChunks;
38pub use multi_buffer::{
39 Anchor, AnchorRangeExt, ExcerptId, MultiBuffer, MultiBufferSnapshot, ToOffset, ToPoint,
40};
41use ordered_float::OrderedFloat;
42use project::{Project, ProjectTransaction};
43use serde::{Deserialize, Serialize};
44use smallvec::SmallVec;
45use smol::Timer;
46use snippet::Snippet;
47use std::{
48 any::TypeId,
49 cmp::{self, Ordering, Reverse},
50 iter::{self, FromIterator},
51 mem,
52 ops::{Deref, DerefMut, Range, RangeInclusive, Sub},
53 sync::Arc,
54 time::{Duration, Instant},
55};
56pub use sum_tree::Bias;
57use text::rope::TextDimension;
58use theme::DiagnosticStyle;
59use util::{post_inc, ResultExt, TryFutureExt};
60use workspace::{settings, ItemNavHistory, Settings, Workspace};
61
62const CURSOR_BLINK_INTERVAL: Duration = Duration::from_millis(500);
63const MAX_LINE_LEN: usize = 1024;
64const MIN_NAVIGATION_HISTORY_ROW_DELTA: i64 = 10;
65
66action!(Cancel);
67action!(Backspace);
68action!(Delete);
69action!(Input, String);
70action!(Newline);
71action!(Tab);
72action!(Outdent);
73action!(DeleteLine);
74action!(DeleteToPreviousWordBoundary);
75action!(DeleteToNextWordBoundary);
76action!(DeleteToBeginningOfLine);
77action!(DeleteToEndOfLine);
78action!(CutToEndOfLine);
79action!(DuplicateLine);
80action!(MoveLineUp);
81action!(MoveLineDown);
82action!(Cut);
83action!(Copy);
84action!(Paste);
85action!(Undo);
86action!(Redo);
87action!(MoveUp);
88action!(MoveDown);
89action!(MoveLeft);
90action!(MoveRight);
91action!(MoveToPreviousWordStart);
92action!(MoveToNextWordEnd);
93action!(MoveToBeginningOfLine);
94action!(MoveToEndOfLine);
95action!(MoveToBeginning);
96action!(MoveToEnd);
97action!(SelectUp);
98action!(SelectDown);
99action!(SelectLeft);
100action!(SelectRight);
101action!(SelectToPreviousWordBoundary);
102action!(SelectToNextWordBoundary);
103action!(SelectToBeginningOfLine, bool);
104action!(SelectToEndOfLine, bool);
105action!(SelectToBeginning);
106action!(SelectToEnd);
107action!(SelectAll);
108action!(SelectLine);
109action!(SplitSelectionIntoLines);
110action!(AddSelectionAbove);
111action!(AddSelectionBelow);
112action!(SelectNext, bool);
113action!(ToggleComments);
114action!(SelectLargerSyntaxNode);
115action!(SelectSmallerSyntaxNode);
116action!(MoveToEnclosingBracket);
117action!(GoToDiagnostic, Direction);
118action!(GoToDefinition);
119action!(FindAllReferences);
120action!(Rename);
121action!(ConfirmRename);
122action!(PageUp);
123action!(PageDown);
124action!(Fold);
125action!(UnfoldLines);
126action!(FoldSelectedRanges);
127action!(Scroll, Vector2F);
128action!(Select, SelectPhase);
129action!(ShowCompletions);
130action!(ToggleCodeActions, bool);
131action!(ConfirmCompletion, Option<usize>);
132action!(ConfirmCodeAction, Option<usize>);
133action!(OpenExcerpts);
134
135enum DocumentHighlightRead {}
136enum DocumentHighlightWrite {}
137
138#[derive(Copy, Clone, PartialEq, Eq)]
139pub enum Direction {
140 Prev,
141 Next,
142}
143
144pub fn init(cx: &mut MutableAppContext) {
145 cx.add_bindings(vec![
146 Binding::new("escape", Cancel, Some("Editor")),
147 Binding::new("backspace", Backspace, Some("Editor")),
148 Binding::new("ctrl-h", Backspace, Some("Editor")),
149 Binding::new("delete", Delete, Some("Editor")),
150 Binding::new("ctrl-d", Delete, Some("Editor")),
151 Binding::new("enter", Newline, Some("Editor && mode == full")),
152 Binding::new(
153 "alt-enter",
154 Input("\n".into()),
155 Some("Editor && mode == auto_height"),
156 ),
157 Binding::new(
158 "enter",
159 ConfirmCompletion(None),
160 Some("Editor && showing_completions"),
161 ),
162 Binding::new(
163 "enter",
164 ConfirmCodeAction(None),
165 Some("Editor && showing_code_actions"),
166 ),
167 Binding::new("enter", ConfirmRename, Some("Editor && renaming")),
168 Binding::new("tab", Tab, Some("Editor")),
169 Binding::new(
170 "tab",
171 ConfirmCompletion(None),
172 Some("Editor && showing_completions"),
173 ),
174 Binding::new("shift-tab", Outdent, Some("Editor")),
175 Binding::new("ctrl-shift-K", DeleteLine, Some("Editor")),
176 Binding::new(
177 "alt-backspace",
178 DeleteToPreviousWordBoundary,
179 Some("Editor"),
180 ),
181 Binding::new("alt-h", DeleteToPreviousWordBoundary, Some("Editor")),
182 Binding::new("alt-delete", DeleteToNextWordBoundary, Some("Editor")),
183 Binding::new("alt-d", DeleteToNextWordBoundary, Some("Editor")),
184 Binding::new("cmd-backspace", DeleteToBeginningOfLine, Some("Editor")),
185 Binding::new("cmd-delete", DeleteToEndOfLine, Some("Editor")),
186 Binding::new("ctrl-k", CutToEndOfLine, Some("Editor")),
187 Binding::new("cmd-shift-D", DuplicateLine, Some("Editor")),
188 Binding::new("ctrl-cmd-up", MoveLineUp, Some("Editor")),
189 Binding::new("ctrl-cmd-down", MoveLineDown, Some("Editor")),
190 Binding::new("cmd-x", Cut, Some("Editor")),
191 Binding::new("cmd-c", Copy, Some("Editor")),
192 Binding::new("cmd-v", Paste, Some("Editor")),
193 Binding::new("cmd-z", Undo, Some("Editor")),
194 Binding::new("cmd-shift-Z", Redo, Some("Editor")),
195 Binding::new("up", MoveUp, Some("Editor")),
196 Binding::new("down", MoveDown, Some("Editor")),
197 Binding::new("left", MoveLeft, Some("Editor")),
198 Binding::new("right", MoveRight, Some("Editor")),
199 Binding::new("ctrl-p", MoveUp, Some("Editor")),
200 Binding::new("ctrl-n", MoveDown, Some("Editor")),
201 Binding::new("ctrl-b", MoveLeft, Some("Editor")),
202 Binding::new("ctrl-f", MoveRight, Some("Editor")),
203 Binding::new("alt-left", MoveToPreviousWordStart, Some("Editor")),
204 Binding::new("alt-b", MoveToPreviousWordStart, Some("Editor")),
205 Binding::new("alt-right", MoveToNextWordEnd, Some("Editor")),
206 Binding::new("alt-f", MoveToNextWordEnd, Some("Editor")),
207 Binding::new("cmd-left", MoveToBeginningOfLine, Some("Editor")),
208 Binding::new("ctrl-a", MoveToBeginningOfLine, Some("Editor")),
209 Binding::new("cmd-right", MoveToEndOfLine, Some("Editor")),
210 Binding::new("ctrl-e", MoveToEndOfLine, Some("Editor")),
211 Binding::new("cmd-up", MoveToBeginning, Some("Editor")),
212 Binding::new("cmd-down", MoveToEnd, Some("Editor")),
213 Binding::new("shift-up", SelectUp, Some("Editor")),
214 Binding::new("ctrl-shift-P", SelectUp, Some("Editor")),
215 Binding::new("shift-down", SelectDown, Some("Editor")),
216 Binding::new("ctrl-shift-N", SelectDown, Some("Editor")),
217 Binding::new("shift-left", SelectLeft, Some("Editor")),
218 Binding::new("ctrl-shift-B", SelectLeft, Some("Editor")),
219 Binding::new("shift-right", SelectRight, Some("Editor")),
220 Binding::new("ctrl-shift-F", SelectRight, Some("Editor")),
221 Binding::new(
222 "alt-shift-left",
223 SelectToPreviousWordBoundary,
224 Some("Editor"),
225 ),
226 Binding::new("alt-shift-B", SelectToPreviousWordBoundary, Some("Editor")),
227 Binding::new("alt-shift-right", SelectToNextWordBoundary, Some("Editor")),
228 Binding::new("alt-shift-F", SelectToNextWordBoundary, Some("Editor")),
229 Binding::new(
230 "cmd-shift-left",
231 SelectToBeginningOfLine(true),
232 Some("Editor"),
233 ),
234 Binding::new(
235 "ctrl-shift-A",
236 SelectToBeginningOfLine(true),
237 Some("Editor"),
238 ),
239 Binding::new("cmd-shift-right", SelectToEndOfLine(true), Some("Editor")),
240 Binding::new("ctrl-shift-E", SelectToEndOfLine(true), Some("Editor")),
241 Binding::new("cmd-shift-up", SelectToBeginning, Some("Editor")),
242 Binding::new("cmd-shift-down", SelectToEnd, Some("Editor")),
243 Binding::new("cmd-a", SelectAll, Some("Editor")),
244 Binding::new("cmd-l", SelectLine, Some("Editor")),
245 Binding::new("cmd-shift-L", SplitSelectionIntoLines, Some("Editor")),
246 Binding::new("cmd-alt-up", AddSelectionAbove, Some("Editor")),
247 Binding::new("cmd-ctrl-p", AddSelectionAbove, Some("Editor")),
248 Binding::new("cmd-alt-down", AddSelectionBelow, Some("Editor")),
249 Binding::new("cmd-ctrl-n", AddSelectionBelow, Some("Editor")),
250 Binding::new("cmd-d", SelectNext(false), Some("Editor")),
251 Binding::new("cmd-k cmd-d", SelectNext(true), Some("Editor")),
252 Binding::new("cmd-/", ToggleComments, Some("Editor")),
253 Binding::new("alt-up", SelectLargerSyntaxNode, Some("Editor")),
254 Binding::new("ctrl-w", SelectLargerSyntaxNode, Some("Editor")),
255 Binding::new("alt-down", SelectSmallerSyntaxNode, Some("Editor")),
256 Binding::new("ctrl-shift-W", SelectSmallerSyntaxNode, Some("Editor")),
257 Binding::new("f8", GoToDiagnostic(Direction::Next), Some("Editor")),
258 Binding::new("shift-f8", GoToDiagnostic(Direction::Prev), Some("Editor")),
259 Binding::new("f2", Rename, Some("Editor")),
260 Binding::new("f12", GoToDefinition, Some("Editor")),
261 Binding::new("alt-shift-f12", FindAllReferences, Some("Editor")),
262 Binding::new("ctrl-m", MoveToEnclosingBracket, Some("Editor")),
263 Binding::new("pageup", PageUp, Some("Editor")),
264 Binding::new("pagedown", PageDown, Some("Editor")),
265 Binding::new("alt-cmd-[", Fold, Some("Editor")),
266 Binding::new("alt-cmd-]", UnfoldLines, Some("Editor")),
267 Binding::new("alt-cmd-f", FoldSelectedRanges, Some("Editor")),
268 Binding::new("ctrl-space", ShowCompletions, Some("Editor")),
269 Binding::new("cmd-.", ToggleCodeActions(false), Some("Editor")),
270 Binding::new("alt-enter", OpenExcerpts, Some("Editor")),
271 ]);
272
273 cx.add_action(Editor::open_new);
274 cx.add_action(|this: &mut Editor, action: &Scroll, cx| this.set_scroll_position(action.0, cx));
275 cx.add_action(Editor::select);
276 cx.add_action(Editor::cancel);
277 cx.add_action(Editor::handle_input);
278 cx.add_action(Editor::newline);
279 cx.add_action(Editor::backspace);
280 cx.add_action(Editor::delete);
281 cx.add_action(Editor::tab);
282 cx.add_action(Editor::outdent);
283 cx.add_action(Editor::delete_line);
284 cx.add_action(Editor::delete_to_previous_word_start);
285 cx.add_action(Editor::delete_to_next_word_end);
286 cx.add_action(Editor::delete_to_beginning_of_line);
287 cx.add_action(Editor::delete_to_end_of_line);
288 cx.add_action(Editor::cut_to_end_of_line);
289 cx.add_action(Editor::duplicate_line);
290 cx.add_action(Editor::move_line_up);
291 cx.add_action(Editor::move_line_down);
292 cx.add_action(Editor::cut);
293 cx.add_action(Editor::copy);
294 cx.add_action(Editor::paste);
295 cx.add_action(Editor::undo);
296 cx.add_action(Editor::redo);
297 cx.add_action(Editor::move_up);
298 cx.add_action(Editor::move_down);
299 cx.add_action(Editor::move_left);
300 cx.add_action(Editor::move_right);
301 cx.add_action(Editor::move_to_previous_word_start);
302 cx.add_action(Editor::move_to_next_word_end);
303 cx.add_action(Editor::move_to_beginning_of_line);
304 cx.add_action(Editor::move_to_end_of_line);
305 cx.add_action(Editor::move_to_beginning);
306 cx.add_action(Editor::move_to_end);
307 cx.add_action(Editor::select_up);
308 cx.add_action(Editor::select_down);
309 cx.add_action(Editor::select_left);
310 cx.add_action(Editor::select_right);
311 cx.add_action(Editor::select_to_previous_word_start);
312 cx.add_action(Editor::select_to_next_word_end);
313 cx.add_action(Editor::select_to_beginning_of_line);
314 cx.add_action(Editor::select_to_end_of_line);
315 cx.add_action(Editor::select_to_beginning);
316 cx.add_action(Editor::select_to_end);
317 cx.add_action(Editor::select_all);
318 cx.add_action(Editor::select_line);
319 cx.add_action(Editor::split_selection_into_lines);
320 cx.add_action(Editor::add_selection_above);
321 cx.add_action(Editor::add_selection_below);
322 cx.add_action(Editor::select_next);
323 cx.add_action(Editor::toggle_comments);
324 cx.add_action(Editor::select_larger_syntax_node);
325 cx.add_action(Editor::select_smaller_syntax_node);
326 cx.add_action(Editor::move_to_enclosing_bracket);
327 cx.add_action(Editor::go_to_diagnostic);
328 cx.add_action(Editor::go_to_definition);
329 cx.add_action(Editor::page_up);
330 cx.add_action(Editor::page_down);
331 cx.add_action(Editor::fold);
332 cx.add_action(Editor::unfold_lines);
333 cx.add_action(Editor::fold_selected_ranges);
334 cx.add_action(Editor::show_completions);
335 cx.add_action(Editor::toggle_code_actions);
336 cx.add_action(Editor::open_excerpts);
337 cx.add_async_action(Editor::confirm_completion);
338 cx.add_async_action(Editor::confirm_code_action);
339 cx.add_async_action(Editor::rename);
340 cx.add_async_action(Editor::confirm_rename);
341 cx.add_async_action(Editor::find_all_references);
342
343 workspace::register_project_item::<Editor>(cx);
344 workspace::register_followable_item::<Editor>(cx);
345}
346
347trait InvalidationRegion {
348 fn ranges(&self) -> &[Range<Anchor>];
349}
350
351#[derive(Clone, Debug)]
352pub enum SelectPhase {
353 Begin {
354 position: DisplayPoint,
355 add: bool,
356 click_count: usize,
357 },
358 BeginColumnar {
359 position: DisplayPoint,
360 overshoot: u32,
361 },
362 Extend {
363 position: DisplayPoint,
364 click_count: usize,
365 },
366 Update {
367 position: DisplayPoint,
368 overshoot: u32,
369 scroll_position: Vector2F,
370 },
371 End,
372}
373
374#[derive(Clone, Debug)]
375pub enum SelectMode {
376 Character,
377 Word(Range<Anchor>),
378 Line(Range<Anchor>),
379 All,
380}
381
382#[derive(PartialEq, Eq)]
383pub enum Autoscroll {
384 Fit,
385 Center,
386 Newest,
387}
388
389#[derive(Copy, Clone, PartialEq, Eq)]
390pub enum EditorMode {
391 SingleLine,
392 AutoHeight { max_lines: usize },
393 Full,
394}
395
396#[derive(Clone)]
397pub enum SoftWrap {
398 None,
399 EditorWidth,
400 Column(u32),
401}
402
403#[derive(Clone)]
404pub struct EditorStyle {
405 pub text: TextStyle,
406 pub placeholder_text: Option<TextStyle>,
407 pub theme: theme::Editor,
408}
409
410type CompletionId = usize;
411
412pub type GetFieldEditorTheme = fn(&theme::Theme) -> theme::FieldEditor;
413
414type OverrideTextStyle = dyn Fn(&EditorStyle) -> Option<HighlightStyle>;
415
416pub struct Editor {
417 handle: WeakViewHandle<Self>,
418 buffer: ModelHandle<MultiBuffer>,
419 display_map: ModelHandle<DisplayMap>,
420 next_selection_id: usize,
421 selections: Arc<[Selection<Anchor>]>,
422 pending_selection: Option<PendingSelection>,
423 columnar_selection_tail: Option<Anchor>,
424 add_selections_state: Option<AddSelectionsState>,
425 select_next_state: Option<SelectNextState>,
426 selection_history:
427 HashMap<TransactionId, (Arc<[Selection<Anchor>]>, Option<Arc<[Selection<Anchor>]>>)>,
428 autoclose_stack: InvalidationStack<BracketPairState>,
429 snippet_stack: InvalidationStack<SnippetState>,
430 select_larger_syntax_node_stack: Vec<Box<[Selection<usize>]>>,
431 active_diagnostics: Option<ActiveDiagnosticGroup>,
432 scroll_position: Vector2F,
433 scroll_top_anchor: Anchor,
434 autoscroll_request: Option<(Autoscroll, bool)>,
435 soft_wrap_mode_override: Option<settings::SoftWrap>,
436 get_field_editor_theme: Option<GetFieldEditorTheme>,
437 override_text_style: Option<Box<OverrideTextStyle>>,
438 project: Option<ModelHandle<Project>>,
439 focused: bool,
440 show_local_cursors: bool,
441 show_local_selections: bool,
442 blink_epoch: usize,
443 blinking_paused: bool,
444 mode: EditorMode,
445 vertical_scroll_margin: f32,
446 placeholder_text: Option<Arc<str>>,
447 highlighted_rows: Option<Range<u32>>,
448 background_highlights: BTreeMap<TypeId, (Color, Vec<Range<Anchor>>)>,
449 nav_history: Option<ItemNavHistory>,
450 context_menu: Option<ContextMenu>,
451 completion_tasks: Vec<(CompletionId, Task<Option<()>>)>,
452 next_completion_id: CompletionId,
453 available_code_actions: Option<(ModelHandle<Buffer>, Arc<[CodeAction]>)>,
454 code_actions_task: Option<Task<()>>,
455 document_highlights_task: Option<Task<()>>,
456 pending_rename: Option<RenameState>,
457 searchable: bool,
458 cursor_shape: CursorShape,
459 keymap_context_layers: BTreeMap<TypeId, gpui::keymap::Context>,
460 input_enabled: bool,
461 leader_replica_id: Option<u16>,
462}
463
464pub struct EditorSnapshot {
465 pub mode: EditorMode,
466 pub display_snapshot: DisplaySnapshot,
467 pub placeholder_text: Option<Arc<str>>,
468 is_focused: bool,
469 scroll_position: Vector2F,
470 scroll_top_anchor: Anchor,
471}
472
473#[derive(Clone)]
474pub struct PendingSelection {
475 selection: Selection<Anchor>,
476 mode: SelectMode,
477}
478
479struct AddSelectionsState {
480 above: bool,
481 stack: Vec<usize>,
482}
483
484struct SelectNextState {
485 query: AhoCorasick,
486 wordwise: bool,
487 done: bool,
488}
489
490struct BracketPairState {
491 ranges: Vec<Range<Anchor>>,
492 pair: BracketPair,
493}
494
495struct SnippetState {
496 ranges: Vec<Vec<Range<Anchor>>>,
497 active_index: usize,
498}
499
500pub struct RenameState {
501 pub range: Range<Anchor>,
502 pub old_name: String,
503 pub editor: ViewHandle<Editor>,
504 block_id: BlockId,
505}
506
507struct InvalidationStack<T>(Vec<T>);
508
509enum ContextMenu {
510 Completions(CompletionsMenu),
511 CodeActions(CodeActionsMenu),
512}
513
514impl ContextMenu {
515 fn select_prev(&mut self, cx: &mut ViewContext<Editor>) -> bool {
516 if self.visible() {
517 match self {
518 ContextMenu::Completions(menu) => menu.select_prev(cx),
519 ContextMenu::CodeActions(menu) => menu.select_prev(cx),
520 }
521 true
522 } else {
523 false
524 }
525 }
526
527 fn select_next(&mut self, cx: &mut ViewContext<Editor>) -> bool {
528 if self.visible() {
529 match self {
530 ContextMenu::Completions(menu) => menu.select_next(cx),
531 ContextMenu::CodeActions(menu) => menu.select_next(cx),
532 }
533 true
534 } else {
535 false
536 }
537 }
538
539 fn visible(&self) -> bool {
540 match self {
541 ContextMenu::Completions(menu) => menu.visible(),
542 ContextMenu::CodeActions(menu) => menu.visible(),
543 }
544 }
545
546 fn render(
547 &self,
548 cursor_position: DisplayPoint,
549 style: EditorStyle,
550 cx: &AppContext,
551 ) -> (DisplayPoint, ElementBox) {
552 match self {
553 ContextMenu::Completions(menu) => (cursor_position, menu.render(style, cx)),
554 ContextMenu::CodeActions(menu) => menu.render(cursor_position, style),
555 }
556 }
557}
558
559struct CompletionsMenu {
560 id: CompletionId,
561 initial_position: Anchor,
562 buffer: ModelHandle<Buffer>,
563 completions: Arc<[Completion]>,
564 match_candidates: Vec<StringMatchCandidate>,
565 matches: Arc<[StringMatch]>,
566 selected_item: usize,
567 list: UniformListState,
568}
569
570impl CompletionsMenu {
571 fn select_prev(&mut self, cx: &mut ViewContext<Editor>) {
572 if self.selected_item > 0 {
573 self.selected_item -= 1;
574 self.list.scroll_to(ScrollTarget::Show(self.selected_item));
575 }
576 cx.notify();
577 }
578
579 fn select_next(&mut self, cx: &mut ViewContext<Editor>) {
580 if self.selected_item + 1 < self.matches.len() {
581 self.selected_item += 1;
582 self.list.scroll_to(ScrollTarget::Show(self.selected_item));
583 }
584 cx.notify();
585 }
586
587 fn visible(&self) -> bool {
588 !self.matches.is_empty()
589 }
590
591 fn render(&self, style: EditorStyle, _: &AppContext) -> ElementBox {
592 enum CompletionTag {}
593
594 let completions = self.completions.clone();
595 let matches = self.matches.clone();
596 let selected_item = self.selected_item;
597 let container_style = style.autocomplete.container;
598 UniformList::new(self.list.clone(), matches.len(), move |range, items, cx| {
599 let start_ix = range.start;
600 for (ix, mat) in matches[range].iter().enumerate() {
601 let completion = &completions[mat.candidate_id];
602 let item_ix = start_ix + ix;
603 items.push(
604 MouseEventHandler::new::<CompletionTag, _, _>(
605 mat.candidate_id,
606 cx,
607 |state, _| {
608 let item_style = if item_ix == selected_item {
609 style.autocomplete.selected_item
610 } else if state.hovered {
611 style.autocomplete.hovered_item
612 } else {
613 style.autocomplete.item
614 };
615
616 Text::new(completion.label.text.clone(), style.text.clone())
617 .with_soft_wrap(false)
618 .with_highlights(combine_syntax_and_fuzzy_match_highlights(
619 &completion.label.text,
620 style.text.color.into(),
621 styled_runs_for_code_label(&completion.label, &style.syntax),
622 &mat.positions,
623 ))
624 .contained()
625 .with_style(item_style)
626 .boxed()
627 },
628 )
629 .with_cursor_style(CursorStyle::PointingHand)
630 .on_mouse_down(move |cx| {
631 cx.dispatch_action(ConfirmCompletion(Some(item_ix)));
632 })
633 .boxed(),
634 );
635 }
636 })
637 .with_width_from_item(
638 self.matches
639 .iter()
640 .enumerate()
641 .max_by_key(|(_, mat)| {
642 self.completions[mat.candidate_id]
643 .label
644 .text
645 .chars()
646 .count()
647 })
648 .map(|(ix, _)| ix),
649 )
650 .contained()
651 .with_style(container_style)
652 .boxed()
653 }
654
655 pub async fn filter(&mut self, query: Option<&str>, executor: Arc<executor::Background>) {
656 let mut matches = if let Some(query) = query {
657 fuzzy::match_strings(
658 &self.match_candidates,
659 query,
660 false,
661 100,
662 &Default::default(),
663 executor,
664 )
665 .await
666 } else {
667 self.match_candidates
668 .iter()
669 .enumerate()
670 .map(|(candidate_id, candidate)| StringMatch {
671 candidate_id,
672 score: Default::default(),
673 positions: Default::default(),
674 string: candidate.string.clone(),
675 })
676 .collect()
677 };
678 matches.sort_unstable_by_key(|mat| {
679 (
680 Reverse(OrderedFloat(mat.score)),
681 self.completions[mat.candidate_id].sort_key(),
682 )
683 });
684
685 for mat in &mut matches {
686 let filter_start = self.completions[mat.candidate_id].label.filter_range.start;
687 for position in &mut mat.positions {
688 *position += filter_start;
689 }
690 }
691
692 self.matches = matches.into();
693 }
694}
695
696#[derive(Clone)]
697struct CodeActionsMenu {
698 actions: Arc<[CodeAction]>,
699 buffer: ModelHandle<Buffer>,
700 selected_item: usize,
701 list: UniformListState,
702 deployed_from_indicator: bool,
703}
704
705impl CodeActionsMenu {
706 fn select_prev(&mut self, cx: &mut ViewContext<Editor>) {
707 if self.selected_item > 0 {
708 self.selected_item -= 1;
709 cx.notify()
710 }
711 }
712
713 fn select_next(&mut self, cx: &mut ViewContext<Editor>) {
714 if self.selected_item + 1 < self.actions.len() {
715 self.selected_item += 1;
716 cx.notify()
717 }
718 }
719
720 fn visible(&self) -> bool {
721 !self.actions.is_empty()
722 }
723
724 fn render(
725 &self,
726 mut cursor_position: DisplayPoint,
727 style: EditorStyle,
728 ) -> (DisplayPoint, ElementBox) {
729 enum ActionTag {}
730
731 let container_style = style.autocomplete.container;
732 let actions = self.actions.clone();
733 let selected_item = self.selected_item;
734 let element =
735 UniformList::new(self.list.clone(), actions.len(), move |range, items, cx| {
736 let start_ix = range.start;
737 for (ix, action) in actions[range].iter().enumerate() {
738 let item_ix = start_ix + ix;
739 items.push(
740 MouseEventHandler::new::<ActionTag, _, _>(item_ix, cx, |state, _| {
741 let item_style = if item_ix == selected_item {
742 style.autocomplete.selected_item
743 } else if state.hovered {
744 style.autocomplete.hovered_item
745 } else {
746 style.autocomplete.item
747 };
748
749 Text::new(action.lsp_action.title.clone(), style.text.clone())
750 .with_soft_wrap(false)
751 .contained()
752 .with_style(item_style)
753 .boxed()
754 })
755 .with_cursor_style(CursorStyle::PointingHand)
756 .on_mouse_down(move |cx| {
757 cx.dispatch_action(ConfirmCodeAction(Some(item_ix)));
758 })
759 .boxed(),
760 );
761 }
762 })
763 .with_width_from_item(
764 self.actions
765 .iter()
766 .enumerate()
767 .max_by_key(|(_, action)| action.lsp_action.title.chars().count())
768 .map(|(ix, _)| ix),
769 )
770 .contained()
771 .with_style(container_style)
772 .boxed();
773
774 if self.deployed_from_indicator {
775 *cursor_position.column_mut() = 0;
776 }
777
778 (cursor_position, element)
779 }
780}
781
782#[derive(Debug)]
783struct ActiveDiagnosticGroup {
784 primary_range: Range<Anchor>,
785 primary_message: String,
786 blocks: HashMap<BlockId, Diagnostic>,
787 is_valid: bool,
788}
789
790#[derive(Serialize, Deserialize)]
791struct ClipboardSelection {
792 len: usize,
793 is_entire_line: bool,
794}
795
796pub struct NavigationData {
797 anchor: Anchor,
798 offset: usize,
799}
800
801pub struct EditorCreated(pub ViewHandle<Editor>);
802
803impl Editor {
804 pub fn single_line(
805 field_editor_style: Option<GetFieldEditorTheme>,
806 cx: &mut ViewContext<Self>,
807 ) -> Self {
808 let buffer = cx.add_model(|cx| Buffer::new(0, String::new(), cx));
809 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
810 Self::new(EditorMode::SingleLine, buffer, None, field_editor_style, cx)
811 }
812
813 pub fn auto_height(
814 max_lines: usize,
815 field_editor_style: Option<GetFieldEditorTheme>,
816 cx: &mut ViewContext<Self>,
817 ) -> Self {
818 let buffer = cx.add_model(|cx| Buffer::new(0, String::new(), cx));
819 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
820 Self::new(
821 EditorMode::AutoHeight { max_lines },
822 buffer,
823 None,
824 field_editor_style,
825 cx,
826 )
827 }
828
829 pub fn for_buffer(
830 buffer: ModelHandle<Buffer>,
831 project: Option<ModelHandle<Project>>,
832 cx: &mut ViewContext<Self>,
833 ) -> Self {
834 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
835 Self::new(EditorMode::Full, buffer, project, None, cx)
836 }
837
838 pub fn for_multibuffer(
839 buffer: ModelHandle<MultiBuffer>,
840 project: Option<ModelHandle<Project>>,
841 cx: &mut ViewContext<Self>,
842 ) -> Self {
843 Self::new(EditorMode::Full, buffer, project, None, cx)
844 }
845
846 pub fn clone(&self, cx: &mut ViewContext<Self>) -> Self {
847 let mut clone = Self::new(
848 self.mode,
849 self.buffer.clone(),
850 self.project.clone(),
851 self.get_field_editor_theme,
852 cx,
853 );
854 clone.scroll_position = self.scroll_position;
855 clone.scroll_top_anchor = self.scroll_top_anchor.clone();
856 clone.searchable = self.searchable;
857 clone
858 }
859
860 fn new(
861 mode: EditorMode,
862 buffer: ModelHandle<MultiBuffer>,
863 project: Option<ModelHandle<Project>>,
864 get_field_editor_theme: Option<GetFieldEditorTheme>,
865 cx: &mut ViewContext<Self>,
866 ) -> Self {
867 let display_map = cx.add_model(|cx| {
868 let settings = cx.global::<Settings>();
869 let style = build_style(&*settings, get_field_editor_theme, None, cx);
870 DisplayMap::new(
871 buffer.clone(),
872 settings.tab_size,
873 style.text.font_id,
874 style.text.font_size,
875 None,
876 2,
877 1,
878 cx,
879 )
880 });
881 cx.observe(&buffer, Self::on_buffer_changed).detach();
882 cx.subscribe(&buffer, Self::on_buffer_event).detach();
883 cx.observe(&display_map, Self::on_display_map_changed)
884 .detach();
885
886 let mut this = Self {
887 handle: cx.weak_handle(),
888 buffer,
889 display_map,
890 selections: Arc::from([]),
891 pending_selection: Some(PendingSelection {
892 selection: Selection {
893 id: 0,
894 start: Anchor::min(),
895 end: Anchor::min(),
896 reversed: false,
897 goal: SelectionGoal::None,
898 },
899 mode: SelectMode::Character,
900 }),
901 columnar_selection_tail: None,
902 next_selection_id: 1,
903 add_selections_state: None,
904 select_next_state: None,
905 selection_history: Default::default(),
906 autoclose_stack: Default::default(),
907 snippet_stack: Default::default(),
908 select_larger_syntax_node_stack: Vec::new(),
909 active_diagnostics: None,
910 soft_wrap_mode_override: None,
911 get_field_editor_theme,
912 project,
913 scroll_position: Vector2F::zero(),
914 scroll_top_anchor: Anchor::min(),
915 autoscroll_request: None,
916 focused: false,
917 show_local_cursors: false,
918 show_local_selections: true,
919 blink_epoch: 0,
920 blinking_paused: false,
921 mode,
922 vertical_scroll_margin: 3.0,
923 placeholder_text: None,
924 highlighted_rows: None,
925 background_highlights: Default::default(),
926 nav_history: None,
927 context_menu: None,
928 completion_tasks: Default::default(),
929 next_completion_id: 0,
930 available_code_actions: Default::default(),
931 code_actions_task: Default::default(),
932 document_highlights_task: Default::default(),
933 pending_rename: Default::default(),
934 searchable: true,
935 override_text_style: None,
936 cursor_shape: Default::default(),
937 keymap_context_layers: Default::default(),
938 input_enabled: true,
939 leader_replica_id: None,
940 };
941 this.end_selection(cx);
942
943 let editor_created_event = EditorCreated(cx.handle());
944 cx.emit_global(editor_created_event);
945
946 this
947 }
948
949 pub fn open_new(
950 workspace: &mut Workspace,
951 _: &workspace::OpenNew,
952 cx: &mut ViewContext<Workspace>,
953 ) {
954 let project = workspace.project().clone();
955 if project.read(cx).is_remote() {
956 cx.propagate_action();
957 } else if let Some(buffer) = project
958 .update(cx, |project, cx| project.create_buffer(cx))
959 .log_err()
960 {
961 workspace.add_item(
962 Box::new(cx.add_view(|cx| Editor::for_buffer(buffer, Some(project.clone()), cx))),
963 cx,
964 );
965 }
966 }
967
968 pub fn replica_id(&self, cx: &AppContext) -> ReplicaId {
969 self.buffer.read(cx).replica_id()
970 }
971
972 pub fn buffer(&self) -> &ModelHandle<MultiBuffer> {
973 &self.buffer
974 }
975
976 pub fn title(&self, cx: &AppContext) -> String {
977 self.buffer().read(cx).title(cx)
978 }
979
980 pub fn snapshot(&mut self, cx: &mut MutableAppContext) -> EditorSnapshot {
981 EditorSnapshot {
982 mode: self.mode,
983 display_snapshot: self.display_map.update(cx, |map, cx| map.snapshot(cx)),
984 scroll_position: self.scroll_position,
985 scroll_top_anchor: self.scroll_top_anchor.clone(),
986 placeholder_text: self.placeholder_text.clone(),
987 is_focused: self
988 .handle
989 .upgrade(cx)
990 .map_or(false, |handle| handle.is_focused(cx)),
991 }
992 }
993
994 pub fn language<'a>(&self, cx: &'a AppContext) -> Option<&'a Arc<Language>> {
995 self.buffer.read(cx).language(cx)
996 }
997
998 fn style(&self, cx: &AppContext) -> EditorStyle {
999 build_style(
1000 cx.global::<Settings>(),
1001 self.get_field_editor_theme,
1002 self.override_text_style.as_deref(),
1003 cx,
1004 )
1005 }
1006
1007 pub fn mode(&self) -> EditorMode {
1008 self.mode
1009 }
1010
1011 pub fn set_placeholder_text(
1012 &mut self,
1013 placeholder_text: impl Into<Arc<str>>,
1014 cx: &mut ViewContext<Self>,
1015 ) {
1016 self.placeholder_text = Some(placeholder_text.into());
1017 cx.notify();
1018 }
1019
1020 pub fn set_vertical_scroll_margin(&mut self, margin_rows: usize, cx: &mut ViewContext<Self>) {
1021 self.vertical_scroll_margin = margin_rows as f32;
1022 cx.notify();
1023 }
1024
1025 pub fn set_scroll_position(&mut self, scroll_position: Vector2F, cx: &mut ViewContext<Self>) {
1026 self.set_scroll_position_internal(scroll_position, true, cx);
1027 }
1028
1029 fn set_scroll_position_internal(
1030 &mut self,
1031 scroll_position: Vector2F,
1032 local: bool,
1033 cx: &mut ViewContext<Self>,
1034 ) {
1035 let map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1036
1037 if scroll_position.y() == 0. {
1038 self.scroll_top_anchor = Anchor::min();
1039 self.scroll_position = scroll_position;
1040 } else {
1041 let scroll_top_buffer_offset =
1042 DisplayPoint::new(scroll_position.y() as u32, 0).to_offset(&map, Bias::Right);
1043 let anchor = map
1044 .buffer_snapshot
1045 .anchor_at(scroll_top_buffer_offset, Bias::Right);
1046 self.scroll_position = vec2f(
1047 scroll_position.x(),
1048 scroll_position.y() - anchor.to_display_point(&map).row() as f32,
1049 );
1050 self.scroll_top_anchor = anchor;
1051 }
1052
1053 cx.emit(Event::ScrollPositionChanged { local });
1054 cx.notify();
1055 }
1056
1057 fn set_scroll_top_anchor(
1058 &mut self,
1059 anchor: Anchor,
1060 position: Vector2F,
1061 cx: &mut ViewContext<Self>,
1062 ) {
1063 self.scroll_top_anchor = anchor;
1064 self.scroll_position = position;
1065 cx.emit(Event::ScrollPositionChanged { local: false });
1066 cx.notify();
1067 }
1068
1069 pub fn set_cursor_shape(&mut self, cursor_shape: CursorShape, cx: &mut ViewContext<Self>) {
1070 self.cursor_shape = cursor_shape;
1071 cx.notify();
1072 }
1073
1074 pub fn set_clip_at_line_ends(&mut self, clip: bool, cx: &mut ViewContext<Self>) {
1075 self.display_map
1076 .update(cx, |map, _| map.clip_at_line_ends = clip);
1077 }
1078
1079 pub fn set_keymap_context_layer<Tag: 'static>(&mut self, context: gpui::keymap::Context) {
1080 self.keymap_context_layers
1081 .insert(TypeId::of::<Tag>(), context);
1082 }
1083
1084 pub fn remove_keymap_context_layer<Tag: 'static>(&mut self) {
1085 self.keymap_context_layers.remove(&TypeId::of::<Tag>());
1086 }
1087
1088 pub fn set_input_enabled(&mut self, input_enabled: bool) {
1089 self.input_enabled = input_enabled;
1090 }
1091
1092 pub fn scroll_position(&self, cx: &mut ViewContext<Self>) -> Vector2F {
1093 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1094 compute_scroll_position(&display_map, self.scroll_position, &self.scroll_top_anchor)
1095 }
1096
1097 pub fn clamp_scroll_left(&mut self, max: f32) -> bool {
1098 if max < self.scroll_position.x() {
1099 self.scroll_position.set_x(max);
1100 true
1101 } else {
1102 false
1103 }
1104 }
1105
1106 pub fn autoscroll_vertically(
1107 &mut self,
1108 viewport_height: f32,
1109 line_height: f32,
1110 cx: &mut ViewContext<Self>,
1111 ) -> bool {
1112 let visible_lines = viewport_height / line_height;
1113 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1114 let mut scroll_position =
1115 compute_scroll_position(&display_map, self.scroll_position, &self.scroll_top_anchor);
1116 let max_scroll_top = if matches!(self.mode, EditorMode::AutoHeight { .. }) {
1117 (display_map.max_point().row() as f32 - visible_lines + 1.).max(0.)
1118 } else {
1119 display_map.max_point().row().saturating_sub(1) as f32
1120 };
1121 if scroll_position.y() > max_scroll_top {
1122 scroll_position.set_y(max_scroll_top);
1123 self.set_scroll_position(scroll_position, cx);
1124 }
1125
1126 let (autoscroll, local) = if let Some(autoscroll) = self.autoscroll_request.take() {
1127 autoscroll
1128 } else {
1129 return false;
1130 };
1131
1132 let first_cursor_top;
1133 let last_cursor_bottom;
1134 if let Some(highlighted_rows) = &self.highlighted_rows {
1135 first_cursor_top = highlighted_rows.start as f32;
1136 last_cursor_bottom = first_cursor_top + 1.;
1137 } else if autoscroll == Autoscroll::Newest {
1138 let newest_selection =
1139 self.newest_selection_with_snapshot::<Point>(&display_map.buffer_snapshot);
1140 first_cursor_top = newest_selection.head().to_display_point(&display_map).row() as f32;
1141 last_cursor_bottom = first_cursor_top + 1.;
1142 } else {
1143 let selections = self.local_selections::<Point>(cx);
1144 first_cursor_top = selections
1145 .first()
1146 .unwrap()
1147 .head()
1148 .to_display_point(&display_map)
1149 .row() as f32;
1150 last_cursor_bottom = selections
1151 .last()
1152 .unwrap()
1153 .head()
1154 .to_display_point(&display_map)
1155 .row() as f32
1156 + 1.0;
1157 }
1158
1159 let margin = if matches!(self.mode, EditorMode::AutoHeight { .. }) {
1160 0.
1161 } else {
1162 ((visible_lines - (last_cursor_bottom - first_cursor_top)) / 2.0).floor()
1163 };
1164 if margin < 0.0 {
1165 return false;
1166 }
1167
1168 match autoscroll {
1169 Autoscroll::Fit | Autoscroll::Newest => {
1170 let margin = margin.min(self.vertical_scroll_margin);
1171 let target_top = (first_cursor_top - margin).max(0.0);
1172 let target_bottom = last_cursor_bottom + margin;
1173 let start_row = scroll_position.y();
1174 let end_row = start_row + visible_lines;
1175
1176 if target_top < start_row {
1177 scroll_position.set_y(target_top);
1178 self.set_scroll_position_internal(scroll_position, local, cx);
1179 } else if target_bottom >= end_row {
1180 scroll_position.set_y(target_bottom - visible_lines);
1181 self.set_scroll_position_internal(scroll_position, local, cx);
1182 }
1183 }
1184 Autoscroll::Center => {
1185 scroll_position.set_y((first_cursor_top - margin).max(0.0));
1186 self.set_scroll_position_internal(scroll_position, local, cx);
1187 }
1188 }
1189
1190 true
1191 }
1192
1193 pub fn autoscroll_horizontally(
1194 &mut self,
1195 start_row: u32,
1196 viewport_width: f32,
1197 scroll_width: f32,
1198 max_glyph_width: f32,
1199 layouts: &[text_layout::Line],
1200 cx: &mut ViewContext<Self>,
1201 ) -> bool {
1202 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1203 let selections = self.local_selections::<Point>(cx);
1204
1205 let mut target_left;
1206 let mut target_right;
1207
1208 if self.highlighted_rows.is_some() {
1209 target_left = 0.0_f32;
1210 target_right = 0.0_f32;
1211 } else {
1212 target_left = std::f32::INFINITY;
1213 target_right = 0.0_f32;
1214 for selection in selections {
1215 let head = selection.head().to_display_point(&display_map);
1216 if head.row() >= start_row && head.row() < start_row + layouts.len() as u32 {
1217 let start_column = head.column().saturating_sub(3);
1218 let end_column = cmp::min(display_map.line_len(head.row()), head.column() + 3);
1219 target_left = target_left.min(
1220 layouts[(head.row() - start_row) as usize]
1221 .x_for_index(start_column as usize),
1222 );
1223 target_right = target_right.max(
1224 layouts[(head.row() - start_row) as usize].x_for_index(end_column as usize)
1225 + max_glyph_width,
1226 );
1227 }
1228 }
1229 }
1230
1231 target_right = target_right.min(scroll_width);
1232
1233 if target_right - target_left > viewport_width {
1234 return false;
1235 }
1236
1237 let scroll_left = self.scroll_position.x() * max_glyph_width;
1238 let scroll_right = scroll_left + viewport_width;
1239
1240 if target_left < scroll_left {
1241 self.scroll_position.set_x(target_left / max_glyph_width);
1242 true
1243 } else if target_right > scroll_right {
1244 self.scroll_position
1245 .set_x((target_right - viewport_width) / max_glyph_width);
1246 true
1247 } else {
1248 false
1249 }
1250 }
1251
1252 pub fn move_selections(
1253 &mut self,
1254 cx: &mut ViewContext<Self>,
1255 move_selection: impl Fn(&DisplaySnapshot, &mut Selection<DisplayPoint>),
1256 ) {
1257 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1258 let selections = self
1259 .local_selections::<Point>(cx)
1260 .into_iter()
1261 .map(|selection| {
1262 let mut selection = Selection {
1263 id: selection.id,
1264 start: selection.start.to_display_point(&display_map),
1265 end: selection.end.to_display_point(&display_map),
1266 reversed: selection.reversed,
1267 goal: selection.goal,
1268 };
1269 move_selection(&display_map, &mut selection);
1270 Selection {
1271 id: selection.id,
1272 start: selection.start.to_point(&display_map),
1273 end: selection.end.to_point(&display_map),
1274 reversed: selection.reversed,
1275 goal: selection.goal,
1276 }
1277 })
1278 .collect();
1279 self.update_selections(selections, Some(Autoscroll::Fit), cx);
1280 }
1281
1282 pub fn move_selection_heads(
1283 &mut self,
1284 cx: &mut ViewContext<Self>,
1285 update_head: impl Fn(
1286 &DisplaySnapshot,
1287 DisplayPoint,
1288 SelectionGoal,
1289 ) -> (DisplayPoint, SelectionGoal),
1290 ) {
1291 self.move_selections(cx, |map, selection| {
1292 let (new_head, new_goal) = update_head(map, selection.head(), selection.goal);
1293 selection.set_head(new_head, new_goal);
1294 });
1295 }
1296
1297 pub fn move_cursors(
1298 &mut self,
1299 cx: &mut ViewContext<Self>,
1300 update_cursor_position: impl Fn(
1301 &DisplaySnapshot,
1302 DisplayPoint,
1303 SelectionGoal,
1304 ) -> (DisplayPoint, SelectionGoal),
1305 ) {
1306 self.move_selections(cx, |map, selection| {
1307 let (cursor, new_goal) = update_cursor_position(map, selection.head(), selection.goal);
1308 selection.collapse_to(cursor, new_goal)
1309 });
1310 }
1311
1312 fn select(&mut self, Select(phase): &Select, cx: &mut ViewContext<Self>) {
1313 self.hide_context_menu(cx);
1314
1315 match phase {
1316 SelectPhase::Begin {
1317 position,
1318 add,
1319 click_count,
1320 } => self.begin_selection(*position, *add, *click_count, cx),
1321 SelectPhase::BeginColumnar {
1322 position,
1323 overshoot,
1324 } => self.begin_columnar_selection(*position, *overshoot, cx),
1325 SelectPhase::Extend {
1326 position,
1327 click_count,
1328 } => self.extend_selection(*position, *click_count, cx),
1329 SelectPhase::Update {
1330 position,
1331 overshoot,
1332 scroll_position,
1333 } => self.update_selection(*position, *overshoot, *scroll_position, cx),
1334 SelectPhase::End => self.end_selection(cx),
1335 }
1336 }
1337
1338 fn extend_selection(
1339 &mut self,
1340 position: DisplayPoint,
1341 click_count: usize,
1342 cx: &mut ViewContext<Self>,
1343 ) {
1344 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1345 let tail = self
1346 .newest_selection_with_snapshot::<usize>(&display_map.buffer_snapshot)
1347 .tail();
1348 self.begin_selection(position, false, click_count, cx);
1349
1350 let position = position.to_offset(&display_map, Bias::Left);
1351 let tail_anchor = display_map.buffer_snapshot.anchor_before(tail);
1352 let mut pending = self.pending_selection.clone().unwrap();
1353
1354 if position >= tail {
1355 pending.selection.start = tail_anchor.clone();
1356 } else {
1357 pending.selection.end = tail_anchor.clone();
1358 pending.selection.reversed = true;
1359 }
1360
1361 match &mut pending.mode {
1362 SelectMode::Word(range) | SelectMode::Line(range) => {
1363 *range = tail_anchor.clone()..tail_anchor
1364 }
1365 _ => {}
1366 }
1367
1368 self.set_selections(self.selections.clone(), Some(pending), true, cx);
1369 }
1370
1371 fn begin_selection(
1372 &mut self,
1373 position: DisplayPoint,
1374 add: bool,
1375 click_count: usize,
1376 cx: &mut ViewContext<Self>,
1377 ) {
1378 if !self.focused {
1379 cx.focus_self();
1380 cx.emit(Event::Activate);
1381 }
1382
1383 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1384 let buffer = &display_map.buffer_snapshot;
1385 let newest_selection = self.newest_anchor_selection().clone();
1386
1387 let start;
1388 let end;
1389 let mode;
1390 match click_count {
1391 1 => {
1392 start = buffer.anchor_before(position.to_point(&display_map));
1393 end = start.clone();
1394 mode = SelectMode::Character;
1395 }
1396 2 => {
1397 let range = movement::surrounding_word(&display_map, position);
1398 start = buffer.anchor_before(range.start.to_point(&display_map));
1399 end = buffer.anchor_before(range.end.to_point(&display_map));
1400 mode = SelectMode::Word(start.clone()..end.clone());
1401 }
1402 3 => {
1403 let position = display_map
1404 .clip_point(position, Bias::Left)
1405 .to_point(&display_map);
1406 let line_start = display_map.prev_line_boundary(position).0;
1407 let next_line_start = buffer.clip_point(
1408 display_map.next_line_boundary(position).0 + Point::new(1, 0),
1409 Bias::Left,
1410 );
1411 start = buffer.anchor_before(line_start);
1412 end = buffer.anchor_before(next_line_start);
1413 mode = SelectMode::Line(start.clone()..end.clone());
1414 }
1415 _ => {
1416 start = buffer.anchor_before(0);
1417 end = buffer.anchor_before(buffer.len());
1418 mode = SelectMode::All;
1419 }
1420 }
1421
1422 let selection = Selection {
1423 id: post_inc(&mut self.next_selection_id),
1424 start,
1425 end,
1426 reversed: false,
1427 goal: SelectionGoal::None,
1428 };
1429
1430 let mut selections;
1431 if add {
1432 selections = self.selections.clone();
1433 // Remove the newest selection if it was added due to a previous mouse up
1434 // within this multi-click.
1435 if click_count > 1 {
1436 selections = self
1437 .selections
1438 .iter()
1439 .filter(|selection| selection.id != newest_selection.id)
1440 .cloned()
1441 .collect();
1442 }
1443 } else {
1444 selections = Arc::from([]);
1445 }
1446 self.set_selections(
1447 selections,
1448 Some(PendingSelection { selection, mode }),
1449 true,
1450 cx,
1451 );
1452
1453 cx.notify();
1454 }
1455
1456 fn begin_columnar_selection(
1457 &mut self,
1458 position: DisplayPoint,
1459 overshoot: u32,
1460 cx: &mut ViewContext<Self>,
1461 ) {
1462 if !self.focused {
1463 cx.focus_self();
1464 cx.emit(Event::Activate);
1465 }
1466
1467 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1468 let tail = self
1469 .newest_selection_with_snapshot::<Point>(&display_map.buffer_snapshot)
1470 .tail();
1471 self.columnar_selection_tail = Some(display_map.buffer_snapshot.anchor_before(tail));
1472
1473 self.select_columns(
1474 tail.to_display_point(&display_map),
1475 position,
1476 overshoot,
1477 &display_map,
1478 cx,
1479 );
1480 }
1481
1482 fn update_selection(
1483 &mut self,
1484 position: DisplayPoint,
1485 overshoot: u32,
1486 scroll_position: Vector2F,
1487 cx: &mut ViewContext<Self>,
1488 ) {
1489 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1490
1491 if let Some(tail) = self.columnar_selection_tail.as_ref() {
1492 let tail = tail.to_display_point(&display_map);
1493 self.select_columns(tail, position, overshoot, &display_map, cx);
1494 } else if let Some(mut pending) = self.pending_selection.clone() {
1495 let buffer = self.buffer.read(cx).snapshot(cx);
1496 let head;
1497 let tail;
1498 match &pending.mode {
1499 SelectMode::Character => {
1500 head = position.to_point(&display_map);
1501 tail = pending.selection.tail().to_point(&buffer);
1502 }
1503 SelectMode::Word(original_range) => {
1504 let original_display_range = original_range.start.to_display_point(&display_map)
1505 ..original_range.end.to_display_point(&display_map);
1506 let original_buffer_range = original_display_range.start.to_point(&display_map)
1507 ..original_display_range.end.to_point(&display_map);
1508 if movement::is_inside_word(&display_map, position)
1509 || original_display_range.contains(&position)
1510 {
1511 let word_range = movement::surrounding_word(&display_map, position);
1512 if word_range.start < original_display_range.start {
1513 head = word_range.start.to_point(&display_map);
1514 } else {
1515 head = word_range.end.to_point(&display_map);
1516 }
1517 } else {
1518 head = position.to_point(&display_map);
1519 }
1520
1521 if head <= original_buffer_range.start {
1522 tail = original_buffer_range.end;
1523 } else {
1524 tail = original_buffer_range.start;
1525 }
1526 }
1527 SelectMode::Line(original_range) => {
1528 let original_range = original_range.to_point(&display_map.buffer_snapshot);
1529
1530 let position = display_map
1531 .clip_point(position, Bias::Left)
1532 .to_point(&display_map);
1533 let line_start = display_map.prev_line_boundary(position).0;
1534 let next_line_start = buffer.clip_point(
1535 display_map.next_line_boundary(position).0 + Point::new(1, 0),
1536 Bias::Left,
1537 );
1538
1539 if line_start < original_range.start {
1540 head = line_start
1541 } else {
1542 head = next_line_start
1543 }
1544
1545 if head <= original_range.start {
1546 tail = original_range.end;
1547 } else {
1548 tail = original_range.start;
1549 }
1550 }
1551 SelectMode::All => {
1552 return;
1553 }
1554 };
1555
1556 if head < tail {
1557 pending.selection.start = buffer.anchor_before(head);
1558 pending.selection.end = buffer.anchor_before(tail);
1559 pending.selection.reversed = true;
1560 } else {
1561 pending.selection.start = buffer.anchor_before(tail);
1562 pending.selection.end = buffer.anchor_before(head);
1563 pending.selection.reversed = false;
1564 }
1565 self.set_selections(self.selections.clone(), Some(pending), true, cx);
1566 } else {
1567 log::error!("update_selection dispatched with no pending selection");
1568 return;
1569 }
1570
1571 self.set_scroll_position(scroll_position, cx);
1572 cx.notify();
1573 }
1574
1575 fn end_selection(&mut self, cx: &mut ViewContext<Self>) {
1576 self.columnar_selection_tail.take();
1577 if self.pending_selection.is_some() {
1578 let selections = self.local_selections::<usize>(cx);
1579 self.update_selections(selections, None, cx);
1580 }
1581 }
1582
1583 fn select_columns(
1584 &mut self,
1585 tail: DisplayPoint,
1586 head: DisplayPoint,
1587 overshoot: u32,
1588 display_map: &DisplaySnapshot,
1589 cx: &mut ViewContext<Self>,
1590 ) {
1591 let start_row = cmp::min(tail.row(), head.row());
1592 let end_row = cmp::max(tail.row(), head.row());
1593 let start_column = cmp::min(tail.column(), head.column() + overshoot);
1594 let end_column = cmp::max(tail.column(), head.column() + overshoot);
1595 let reversed = start_column < tail.column();
1596
1597 let selections = (start_row..=end_row)
1598 .filter_map(|row| {
1599 if start_column <= display_map.line_len(row) && !display_map.is_block_line(row) {
1600 let start = display_map
1601 .clip_point(DisplayPoint::new(row, start_column), Bias::Left)
1602 .to_point(&display_map);
1603 let end = display_map
1604 .clip_point(DisplayPoint::new(row, end_column), Bias::Right)
1605 .to_point(&display_map);
1606 Some(Selection {
1607 id: post_inc(&mut self.next_selection_id),
1608 start,
1609 end,
1610 reversed,
1611 goal: SelectionGoal::None,
1612 })
1613 } else {
1614 None
1615 }
1616 })
1617 .collect::<Vec<_>>();
1618
1619 self.update_selections(selections, None, cx);
1620 cx.notify();
1621 }
1622
1623 pub fn is_selecting(&self) -> bool {
1624 self.pending_selection.is_some() || self.columnar_selection_tail.is_some()
1625 }
1626
1627 pub fn cancel(&mut self, _: &Cancel, cx: &mut ViewContext<Self>) {
1628 if self.take_rename(false, cx).is_some() {
1629 return;
1630 }
1631
1632 if self.hide_context_menu(cx).is_some() {
1633 return;
1634 }
1635
1636 if self.snippet_stack.pop().is_some() {
1637 return;
1638 }
1639
1640 if self.mode != EditorMode::Full {
1641 cx.propagate_action();
1642 return;
1643 }
1644
1645 if self.active_diagnostics.is_some() {
1646 self.dismiss_diagnostics(cx);
1647 } else if let Some(pending) = self.pending_selection.clone() {
1648 let mut selections = self.selections.clone();
1649 if selections.is_empty() {
1650 selections = Arc::from([pending.selection]);
1651 }
1652 self.set_selections(selections, None, true, cx);
1653 self.request_autoscroll(Autoscroll::Fit, cx);
1654 } else {
1655 let mut oldest_selection = self.oldest_selection::<usize>(&cx);
1656 if self.selection_count() == 1 {
1657 if oldest_selection.is_empty() {
1658 cx.propagate_action();
1659 return;
1660 }
1661
1662 oldest_selection.start = oldest_selection.head().clone();
1663 oldest_selection.end = oldest_selection.head().clone();
1664 }
1665 self.update_selections(vec![oldest_selection], Some(Autoscroll::Fit), cx);
1666 }
1667 }
1668
1669 #[cfg(any(test, feature = "test-support"))]
1670 pub fn selected_ranges<D: TextDimension + Ord + Sub<D, Output = D>>(
1671 &self,
1672 cx: &AppContext,
1673 ) -> Vec<Range<D>> {
1674 self.local_selections::<D>(cx)
1675 .iter()
1676 .map(|s| {
1677 if s.reversed {
1678 s.end.clone()..s.start.clone()
1679 } else {
1680 s.start.clone()..s.end.clone()
1681 }
1682 })
1683 .collect()
1684 }
1685
1686 #[cfg(any(test, feature = "test-support"))]
1687 pub fn selected_display_ranges(&self, cx: &mut MutableAppContext) -> Vec<Range<DisplayPoint>> {
1688 let display_map = self
1689 .display_map
1690 .update(cx, |display_map, cx| display_map.snapshot(cx));
1691 self.selections
1692 .iter()
1693 .chain(
1694 self.pending_selection
1695 .as_ref()
1696 .map(|pending| &pending.selection),
1697 )
1698 .map(|s| {
1699 if s.reversed {
1700 s.end.to_display_point(&display_map)..s.start.to_display_point(&display_map)
1701 } else {
1702 s.start.to_display_point(&display_map)..s.end.to_display_point(&display_map)
1703 }
1704 })
1705 .collect()
1706 }
1707
1708 pub fn select_ranges<I, T>(
1709 &mut self,
1710 ranges: I,
1711 autoscroll: Option<Autoscroll>,
1712 cx: &mut ViewContext<Self>,
1713 ) where
1714 I: IntoIterator<Item = Range<T>>,
1715 T: ToOffset,
1716 {
1717 let buffer = self.buffer.read(cx).snapshot(cx);
1718 let selections = ranges
1719 .into_iter()
1720 .map(|range| {
1721 let mut start = range.start.to_offset(&buffer);
1722 let mut end = range.end.to_offset(&buffer);
1723 let reversed = if start > end {
1724 mem::swap(&mut start, &mut end);
1725 true
1726 } else {
1727 false
1728 };
1729 Selection {
1730 id: post_inc(&mut self.next_selection_id),
1731 start,
1732 end,
1733 reversed,
1734 goal: SelectionGoal::None,
1735 }
1736 })
1737 .collect::<Vec<_>>();
1738 self.update_selections(selections, autoscroll, cx);
1739 }
1740
1741 #[cfg(any(test, feature = "test-support"))]
1742 pub fn select_display_ranges<'a, T>(&mut self, ranges: T, cx: &mut ViewContext<Self>)
1743 where
1744 T: IntoIterator<Item = &'a Range<DisplayPoint>>,
1745 {
1746 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1747 let selections = ranges
1748 .into_iter()
1749 .map(|range| {
1750 let mut start = range.start;
1751 let mut end = range.end;
1752 let reversed = if start > end {
1753 mem::swap(&mut start, &mut end);
1754 true
1755 } else {
1756 false
1757 };
1758 Selection {
1759 id: post_inc(&mut self.next_selection_id),
1760 start: start.to_point(&display_map),
1761 end: end.to_point(&display_map),
1762 reversed,
1763 goal: SelectionGoal::None,
1764 }
1765 })
1766 .collect();
1767 self.update_selections(selections, None, cx);
1768 }
1769
1770 pub fn handle_input(&mut self, action: &Input, cx: &mut ViewContext<Self>) {
1771 if !self.input_enabled {
1772 cx.propagate_action();
1773 return;
1774 }
1775
1776 let text = action.0.as_ref();
1777 if !self.skip_autoclose_end(text, cx) {
1778 self.transact(cx, |this, cx| {
1779 if !this.surround_with_bracket_pair(text, cx) {
1780 this.insert(text, cx);
1781 this.autoclose_bracket_pairs(cx);
1782 }
1783 });
1784 self.trigger_completion_on_input(text, cx);
1785 }
1786 }
1787
1788 pub fn newline(&mut self, _: &Newline, cx: &mut ViewContext<Self>) {
1789 self.transact(cx, |this, cx| {
1790 let mut old_selections = SmallVec::<[_; 32]>::new();
1791 {
1792 let selections = this.local_selections::<usize>(cx);
1793 let buffer = this.buffer.read(cx).snapshot(cx);
1794 for selection in selections.iter() {
1795 let start_point = selection.start.to_point(&buffer);
1796 let indent = buffer
1797 .indent_column_for_line(start_point.row)
1798 .min(start_point.column);
1799 let start = selection.start;
1800 let end = selection.end;
1801
1802 let mut insert_extra_newline = false;
1803 if let Some(language) = buffer.language() {
1804 let leading_whitespace_len = buffer
1805 .reversed_chars_at(start)
1806 .take_while(|c| c.is_whitespace() && *c != '\n')
1807 .map(|c| c.len_utf8())
1808 .sum::<usize>();
1809
1810 let trailing_whitespace_len = buffer
1811 .chars_at(end)
1812 .take_while(|c| c.is_whitespace() && *c != '\n')
1813 .map(|c| c.len_utf8())
1814 .sum::<usize>();
1815
1816 insert_extra_newline = language.brackets().iter().any(|pair| {
1817 let pair_start = pair.start.trim_end();
1818 let pair_end = pair.end.trim_start();
1819
1820 pair.newline
1821 && buffer.contains_str_at(end + trailing_whitespace_len, pair_end)
1822 && buffer.contains_str_at(
1823 (start - leading_whitespace_len)
1824 .saturating_sub(pair_start.len()),
1825 pair_start,
1826 )
1827 });
1828 }
1829
1830 old_selections.push((
1831 selection.id,
1832 buffer.anchor_after(end),
1833 start..end,
1834 indent,
1835 insert_extra_newline,
1836 ));
1837 }
1838 }
1839
1840 this.buffer.update(cx, |buffer, cx| {
1841 let mut delta = 0_isize;
1842 let mut pending_edit: Option<PendingEdit> = None;
1843 for (_, _, range, indent, insert_extra_newline) in &old_selections {
1844 if pending_edit.as_ref().map_or(false, |pending| {
1845 pending.indent != *indent
1846 || pending.insert_extra_newline != *insert_extra_newline
1847 }) {
1848 let pending = pending_edit.take().unwrap();
1849 let mut new_text = String::with_capacity(1 + pending.indent as usize);
1850 new_text.push('\n');
1851 new_text.extend(iter::repeat(' ').take(pending.indent as usize));
1852 if pending.insert_extra_newline {
1853 new_text = new_text.repeat(2);
1854 }
1855 buffer.edit_with_autoindent(pending.ranges, new_text, cx);
1856 delta += pending.delta;
1857 }
1858
1859 let start = (range.start as isize + delta) as usize;
1860 let end = (range.end as isize + delta) as usize;
1861 let mut text_len = *indent as usize + 1;
1862 if *insert_extra_newline {
1863 text_len *= 2;
1864 }
1865
1866 let pending = pending_edit.get_or_insert_with(Default::default);
1867 pending.delta += text_len as isize - (end - start) as isize;
1868 pending.indent = *indent;
1869 pending.insert_extra_newline = *insert_extra_newline;
1870 pending.ranges.push(start..end);
1871 }
1872
1873 let pending = pending_edit.unwrap();
1874 let mut new_text = String::with_capacity(1 + pending.indent as usize);
1875 new_text.push('\n');
1876 new_text.extend(iter::repeat(' ').take(pending.indent as usize));
1877 if pending.insert_extra_newline {
1878 new_text = new_text.repeat(2);
1879 }
1880 buffer.edit_with_autoindent(pending.ranges, new_text, cx);
1881
1882 let buffer = buffer.read(cx);
1883 this.selections = this
1884 .selections
1885 .iter()
1886 .cloned()
1887 .zip(old_selections)
1888 .map(
1889 |(mut new_selection, (_, end_anchor, _, _, insert_extra_newline))| {
1890 let mut cursor = end_anchor.to_point(&buffer);
1891 if insert_extra_newline {
1892 cursor.row -= 1;
1893 cursor.column = buffer.line_len(cursor.row);
1894 }
1895 let anchor = buffer.anchor_after(cursor);
1896 new_selection.start = anchor.clone();
1897 new_selection.end = anchor;
1898 new_selection
1899 },
1900 )
1901 .collect();
1902 });
1903
1904 this.request_autoscroll(Autoscroll::Fit, cx);
1905 });
1906
1907 #[derive(Default)]
1908 struct PendingEdit {
1909 indent: u32,
1910 insert_extra_newline: bool,
1911 delta: isize,
1912 ranges: SmallVec<[Range<usize>; 32]>,
1913 }
1914 }
1915
1916 pub fn insert(&mut self, text: &str, cx: &mut ViewContext<Self>) {
1917 self.transact(cx, |this, cx| {
1918 let old_selections = this.local_selections::<usize>(cx);
1919 let selection_anchors = this.buffer.update(cx, |buffer, cx| {
1920 let anchors = {
1921 let snapshot = buffer.read(cx);
1922 old_selections
1923 .iter()
1924 .map(|s| (s.id, s.goal, snapshot.anchor_after(s.end)))
1925 .collect::<Vec<_>>()
1926 };
1927 let edit_ranges = old_selections.iter().map(|s| s.start..s.end);
1928 buffer.edit_with_autoindent(edit_ranges, text, cx);
1929 anchors
1930 });
1931
1932 let selections = {
1933 let snapshot = this.buffer.read(cx).read(cx);
1934 selection_anchors
1935 .into_iter()
1936 .map(|(id, goal, position)| {
1937 let position = position.to_offset(&snapshot);
1938 Selection {
1939 id,
1940 start: position,
1941 end: position,
1942 goal,
1943 reversed: false,
1944 }
1945 })
1946 .collect()
1947 };
1948 this.update_selections(selections, Some(Autoscroll::Fit), cx);
1949 });
1950 }
1951
1952 fn trigger_completion_on_input(&mut self, text: &str, cx: &mut ViewContext<Self>) {
1953 let selection = self.newest_anchor_selection();
1954 if self
1955 .buffer
1956 .read(cx)
1957 .is_completion_trigger(selection.head(), text, cx)
1958 {
1959 self.show_completions(&ShowCompletions, cx);
1960 } else {
1961 self.hide_context_menu(cx);
1962 }
1963 }
1964
1965 fn surround_with_bracket_pair(&mut self, text: &str, cx: &mut ViewContext<Self>) -> bool {
1966 let snapshot = self.buffer.read(cx).snapshot(cx);
1967 if let Some(pair) = snapshot
1968 .language()
1969 .and_then(|language| language.brackets().iter().find(|b| b.start == text))
1970 .cloned()
1971 {
1972 if self
1973 .local_selections::<usize>(cx)
1974 .iter()
1975 .any(|selection| selection.is_empty())
1976 {
1977 false
1978 } else {
1979 let mut selections = self.selections.to_vec();
1980 for selection in &mut selections {
1981 selection.end = selection.end.bias_left(&snapshot);
1982 }
1983 drop(snapshot);
1984
1985 self.buffer.update(cx, |buffer, cx| {
1986 buffer.edit(
1987 selections.iter().map(|s| s.start.clone()..s.start.clone()),
1988 &pair.start,
1989 cx,
1990 );
1991 buffer.edit(
1992 selections.iter().map(|s| s.end.clone()..s.end.clone()),
1993 &pair.end,
1994 cx,
1995 );
1996 });
1997
1998 let snapshot = self.buffer.read(cx).read(cx);
1999 for selection in &mut selections {
2000 selection.end = selection.end.bias_right(&snapshot);
2001 }
2002 drop(snapshot);
2003
2004 self.set_selections(selections.into(), None, true, cx);
2005 true
2006 }
2007 } else {
2008 false
2009 }
2010 }
2011
2012 fn autoclose_bracket_pairs(&mut self, cx: &mut ViewContext<Self>) {
2013 let selections = self.local_selections::<usize>(cx);
2014 let mut bracket_pair_state = None;
2015 let mut new_selections = None;
2016 self.buffer.update(cx, |buffer, cx| {
2017 let mut snapshot = buffer.snapshot(cx);
2018 let left_biased_selections = selections
2019 .iter()
2020 .map(|selection| Selection {
2021 id: selection.id,
2022 start: snapshot.anchor_before(selection.start),
2023 end: snapshot.anchor_before(selection.end),
2024 reversed: selection.reversed,
2025 goal: selection.goal,
2026 })
2027 .collect::<Vec<_>>();
2028
2029 let autoclose_pair = snapshot.language().and_then(|language| {
2030 let first_selection_start = selections.first().unwrap().start;
2031 let pair = language.brackets().iter().find(|pair| {
2032 snapshot.contains_str_at(
2033 first_selection_start.saturating_sub(pair.start.len()),
2034 &pair.start,
2035 )
2036 });
2037 pair.and_then(|pair| {
2038 let should_autoclose = selections.iter().all(|selection| {
2039 // Ensure all selections are parked at the end of a pair start.
2040 if snapshot.contains_str_at(
2041 selection.start.saturating_sub(pair.start.len()),
2042 &pair.start,
2043 ) {
2044 snapshot
2045 .chars_at(selection.start)
2046 .next()
2047 .map_or(true, |c| language.should_autoclose_before(c))
2048 } else {
2049 false
2050 }
2051 });
2052
2053 if should_autoclose {
2054 Some(pair.clone())
2055 } else {
2056 None
2057 }
2058 })
2059 });
2060
2061 if let Some(pair) = autoclose_pair {
2062 let selection_ranges = selections
2063 .iter()
2064 .map(|selection| {
2065 let start = selection.start.to_offset(&snapshot);
2066 start..start
2067 })
2068 .collect::<SmallVec<[_; 32]>>();
2069
2070 buffer.edit(selection_ranges, &pair.end, cx);
2071 snapshot = buffer.snapshot(cx);
2072
2073 new_selections = Some(
2074 self.resolve_selections::<usize, _>(left_biased_selections.iter(), &snapshot)
2075 .collect::<Vec<_>>(),
2076 );
2077
2078 if pair.end.len() == 1 {
2079 let mut delta = 0;
2080 bracket_pair_state = Some(BracketPairState {
2081 ranges: selections
2082 .iter()
2083 .map(move |selection| {
2084 let offset = selection.start + delta;
2085 delta += 1;
2086 snapshot.anchor_before(offset)..snapshot.anchor_after(offset)
2087 })
2088 .collect(),
2089 pair,
2090 });
2091 }
2092 }
2093 });
2094
2095 if let Some(new_selections) = new_selections {
2096 self.update_selections(new_selections, None, cx);
2097 }
2098 if let Some(bracket_pair_state) = bracket_pair_state {
2099 self.autoclose_stack.push(bracket_pair_state);
2100 }
2101 }
2102
2103 fn skip_autoclose_end(&mut self, text: &str, cx: &mut ViewContext<Self>) -> bool {
2104 let old_selections = self.local_selections::<usize>(cx);
2105 let autoclose_pair = if let Some(autoclose_pair) = self.autoclose_stack.last() {
2106 autoclose_pair
2107 } else {
2108 return false;
2109 };
2110 if text != autoclose_pair.pair.end {
2111 return false;
2112 }
2113
2114 debug_assert_eq!(old_selections.len(), autoclose_pair.ranges.len());
2115
2116 let buffer = self.buffer.read(cx).snapshot(cx);
2117 if old_selections
2118 .iter()
2119 .zip(autoclose_pair.ranges.iter().map(|r| r.to_offset(&buffer)))
2120 .all(|(selection, autoclose_range)| {
2121 let autoclose_range_end = autoclose_range.end.to_offset(&buffer);
2122 selection.is_empty() && selection.start == autoclose_range_end
2123 })
2124 {
2125 let new_selections = old_selections
2126 .into_iter()
2127 .map(|selection| {
2128 let cursor = selection.start + 1;
2129 Selection {
2130 id: selection.id,
2131 start: cursor,
2132 end: cursor,
2133 reversed: false,
2134 goal: SelectionGoal::None,
2135 }
2136 })
2137 .collect();
2138 self.autoclose_stack.pop();
2139 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
2140 true
2141 } else {
2142 false
2143 }
2144 }
2145
2146 fn completion_query(buffer: &MultiBufferSnapshot, position: impl ToOffset) -> Option<String> {
2147 let offset = position.to_offset(buffer);
2148 let (word_range, kind) = buffer.surrounding_word(offset);
2149 if offset > word_range.start && kind == Some(CharKind::Word) {
2150 Some(
2151 buffer
2152 .text_for_range(word_range.start..offset)
2153 .collect::<String>(),
2154 )
2155 } else {
2156 None
2157 }
2158 }
2159
2160 fn show_completions(&mut self, _: &ShowCompletions, cx: &mut ViewContext<Self>) {
2161 if self.pending_rename.is_some() {
2162 return;
2163 }
2164
2165 let project = if let Some(project) = self.project.clone() {
2166 project
2167 } else {
2168 return;
2169 };
2170
2171 let position = self.newest_anchor_selection().head();
2172 let (buffer, buffer_position) = if let Some(output) = self
2173 .buffer
2174 .read(cx)
2175 .text_anchor_for_position(position.clone(), cx)
2176 {
2177 output
2178 } else {
2179 return;
2180 };
2181
2182 let query = Self::completion_query(&self.buffer.read(cx).read(cx), position.clone());
2183 let completions = project.update(cx, |project, cx| {
2184 project.completions(&buffer, buffer_position.clone(), cx)
2185 });
2186
2187 let id = post_inc(&mut self.next_completion_id);
2188 let task = cx.spawn_weak(|this, mut cx| {
2189 async move {
2190 let completions = completions.await?;
2191 if completions.is_empty() {
2192 return Ok(());
2193 }
2194
2195 let mut menu = CompletionsMenu {
2196 id,
2197 initial_position: position,
2198 match_candidates: completions
2199 .iter()
2200 .enumerate()
2201 .map(|(id, completion)| {
2202 StringMatchCandidate::new(
2203 id,
2204 completion.label.text[completion.label.filter_range.clone()].into(),
2205 )
2206 })
2207 .collect(),
2208 buffer,
2209 completions: completions.into(),
2210 matches: Vec::new().into(),
2211 selected_item: 0,
2212 list: Default::default(),
2213 };
2214
2215 menu.filter(query.as_deref(), cx.background()).await;
2216
2217 if let Some(this) = this.upgrade(&cx) {
2218 this.update(&mut cx, |this, cx| {
2219 match this.context_menu.as_ref() {
2220 None => {}
2221 Some(ContextMenu::Completions(prev_menu)) => {
2222 if prev_menu.id > menu.id {
2223 return;
2224 }
2225 }
2226 _ => return,
2227 }
2228
2229 this.completion_tasks.retain(|(id, _)| *id > menu.id);
2230 if this.focused {
2231 this.show_context_menu(ContextMenu::Completions(menu), cx);
2232 }
2233
2234 cx.notify();
2235 });
2236 }
2237 Ok::<_, anyhow::Error>(())
2238 }
2239 .log_err()
2240 });
2241 self.completion_tasks.push((id, task));
2242 }
2243
2244 pub fn confirm_completion(
2245 &mut self,
2246 ConfirmCompletion(completion_ix): &ConfirmCompletion,
2247 cx: &mut ViewContext<Self>,
2248 ) -> Option<Task<Result<()>>> {
2249 use language::ToOffset as _;
2250
2251 let completions_menu = if let ContextMenu::Completions(menu) = self.hide_context_menu(cx)? {
2252 menu
2253 } else {
2254 return None;
2255 };
2256
2257 let mat = completions_menu
2258 .matches
2259 .get(completion_ix.unwrap_or(completions_menu.selected_item))?;
2260 let buffer_handle = completions_menu.buffer;
2261 let completion = completions_menu.completions.get(mat.candidate_id)?;
2262
2263 let snippet;
2264 let text;
2265 if completion.is_snippet() {
2266 snippet = Some(Snippet::parse(&completion.new_text).log_err()?);
2267 text = snippet.as_ref().unwrap().text.clone();
2268 } else {
2269 snippet = None;
2270 text = completion.new_text.clone();
2271 };
2272 let buffer = buffer_handle.read(cx);
2273 let old_range = completion.old_range.to_offset(&buffer);
2274 let old_text = buffer.text_for_range(old_range.clone()).collect::<String>();
2275
2276 let selections = self.local_selections::<usize>(cx);
2277 let newest_selection = self.newest_anchor_selection();
2278 if newest_selection.start.buffer_id != Some(buffer_handle.id()) {
2279 return None;
2280 }
2281
2282 let lookbehind = newest_selection
2283 .start
2284 .text_anchor
2285 .to_offset(buffer)
2286 .saturating_sub(old_range.start);
2287 let lookahead = old_range
2288 .end
2289 .saturating_sub(newest_selection.end.text_anchor.to_offset(buffer));
2290 let mut common_prefix_len = old_text
2291 .bytes()
2292 .zip(text.bytes())
2293 .take_while(|(a, b)| a == b)
2294 .count();
2295
2296 let snapshot = self.buffer.read(cx).snapshot(cx);
2297 let mut ranges = Vec::new();
2298 for selection in &selections {
2299 if snapshot.contains_str_at(selection.start.saturating_sub(lookbehind), &old_text) {
2300 let start = selection.start.saturating_sub(lookbehind);
2301 let end = selection.end + lookahead;
2302 ranges.push(start + common_prefix_len..end);
2303 } else {
2304 common_prefix_len = 0;
2305 ranges.clear();
2306 ranges.extend(selections.iter().map(|s| {
2307 if s.id == newest_selection.id {
2308 old_range.clone()
2309 } else {
2310 s.start..s.end
2311 }
2312 }));
2313 break;
2314 }
2315 }
2316 let text = &text[common_prefix_len..];
2317
2318 self.transact(cx, |this, cx| {
2319 if let Some(mut snippet) = snippet {
2320 snippet.text = text.to_string();
2321 for tabstop in snippet.tabstops.iter_mut().flatten() {
2322 tabstop.start -= common_prefix_len as isize;
2323 tabstop.end -= common_prefix_len as isize;
2324 }
2325
2326 this.insert_snippet(&ranges, snippet, cx).log_err();
2327 } else {
2328 this.buffer.update(cx, |buffer, cx| {
2329 buffer.edit_with_autoindent(ranges, text, cx);
2330 });
2331 }
2332 });
2333
2334 let project = self.project.clone()?;
2335 let apply_edits = project.update(cx, |project, cx| {
2336 project.apply_additional_edits_for_completion(
2337 buffer_handle,
2338 completion.clone(),
2339 true,
2340 cx,
2341 )
2342 });
2343 Some(cx.foreground().spawn(async move {
2344 apply_edits.await?;
2345 Ok(())
2346 }))
2347 }
2348
2349 pub fn toggle_code_actions(
2350 &mut self,
2351 &ToggleCodeActions(deployed_from_indicator): &ToggleCodeActions,
2352 cx: &mut ViewContext<Self>,
2353 ) {
2354 if matches!(
2355 self.context_menu.as_ref(),
2356 Some(ContextMenu::CodeActions(_))
2357 ) {
2358 self.context_menu.take();
2359 cx.notify();
2360 return;
2361 }
2362
2363 let mut task = self.code_actions_task.take();
2364 cx.spawn_weak(|this, mut cx| async move {
2365 while let Some(prev_task) = task {
2366 prev_task.await;
2367 task = this
2368 .upgrade(&cx)
2369 .and_then(|this| this.update(&mut cx, |this, _| this.code_actions_task.take()));
2370 }
2371
2372 if let Some(this) = this.upgrade(&cx) {
2373 this.update(&mut cx, |this, cx| {
2374 if this.focused {
2375 if let Some((buffer, actions)) = this.available_code_actions.clone() {
2376 this.show_context_menu(
2377 ContextMenu::CodeActions(CodeActionsMenu {
2378 buffer,
2379 actions,
2380 selected_item: Default::default(),
2381 list: Default::default(),
2382 deployed_from_indicator,
2383 }),
2384 cx,
2385 );
2386 }
2387 }
2388 })
2389 }
2390 Ok::<_, anyhow::Error>(())
2391 })
2392 .detach_and_log_err(cx);
2393 }
2394
2395 pub fn confirm_code_action(
2396 workspace: &mut Workspace,
2397 ConfirmCodeAction(action_ix): &ConfirmCodeAction,
2398 cx: &mut ViewContext<Workspace>,
2399 ) -> Option<Task<Result<()>>> {
2400 let editor = workspace.active_item(cx)?.act_as::<Editor>(cx)?;
2401 let actions_menu = if let ContextMenu::CodeActions(menu) =
2402 editor.update(cx, |editor, cx| editor.hide_context_menu(cx))?
2403 {
2404 menu
2405 } else {
2406 return None;
2407 };
2408 let action_ix = action_ix.unwrap_or(actions_menu.selected_item);
2409 let action = actions_menu.actions.get(action_ix)?.clone();
2410 let title = action.lsp_action.title.clone();
2411 let buffer = actions_menu.buffer;
2412
2413 let apply_code_actions = workspace.project().clone().update(cx, |project, cx| {
2414 project.apply_code_action(buffer, action, true, cx)
2415 });
2416 Some(cx.spawn(|workspace, cx| async move {
2417 let project_transaction = apply_code_actions.await?;
2418 Self::open_project_transaction(editor, workspace, project_transaction, title, cx).await
2419 }))
2420 }
2421
2422 async fn open_project_transaction(
2423 this: ViewHandle<Editor>,
2424 workspace: ViewHandle<Workspace>,
2425 transaction: ProjectTransaction,
2426 title: String,
2427 mut cx: AsyncAppContext,
2428 ) -> Result<()> {
2429 let replica_id = this.read_with(&cx, |this, cx| this.replica_id(cx));
2430
2431 // If the project transaction's edits are all contained within this editor, then
2432 // avoid opening a new editor to display them.
2433 let mut entries = transaction.0.iter();
2434 if let Some((buffer, transaction)) = entries.next() {
2435 if entries.next().is_none() {
2436 let excerpt = this.read_with(&cx, |editor, cx| {
2437 editor
2438 .buffer()
2439 .read(cx)
2440 .excerpt_containing(editor.newest_anchor_selection().head(), cx)
2441 });
2442 if let Some((excerpted_buffer, excerpt_range)) = excerpt {
2443 if excerpted_buffer == *buffer {
2444 let snapshot = buffer.read_with(&cx, |buffer, _| buffer.snapshot());
2445 let excerpt_range = excerpt_range.to_offset(&snapshot);
2446 if snapshot
2447 .edited_ranges_for_transaction(transaction)
2448 .all(|range| {
2449 excerpt_range.start <= range.start && excerpt_range.end >= range.end
2450 })
2451 {
2452 return Ok(());
2453 }
2454 }
2455 }
2456 }
2457 }
2458
2459 let mut ranges_to_highlight = Vec::new();
2460 let excerpt_buffer = cx.add_model(|cx| {
2461 let mut multibuffer = MultiBuffer::new(replica_id).with_title(title);
2462 for (buffer, transaction) in &transaction.0 {
2463 let snapshot = buffer.read(cx).snapshot();
2464 ranges_to_highlight.extend(
2465 multibuffer.push_excerpts_with_context_lines(
2466 buffer.clone(),
2467 snapshot
2468 .edited_ranges_for_transaction::<usize>(transaction)
2469 .collect(),
2470 1,
2471 cx,
2472 ),
2473 );
2474 }
2475 multibuffer.push_transaction(&transaction.0);
2476 multibuffer
2477 });
2478
2479 workspace.update(&mut cx, |workspace, cx| {
2480 let project = workspace.project().clone();
2481 let editor =
2482 cx.add_view(|cx| Editor::for_multibuffer(excerpt_buffer, Some(project), cx));
2483 workspace.add_item(Box::new(editor.clone()), cx);
2484 editor.update(cx, |editor, cx| {
2485 let color = editor.style(cx).highlighted_line_background;
2486 editor.highlight_background::<Self>(ranges_to_highlight, color, cx);
2487 });
2488 });
2489
2490 Ok(())
2491 }
2492
2493 fn refresh_code_actions(&mut self, cx: &mut ViewContext<Self>) -> Option<()> {
2494 let project = self.project.as_ref()?;
2495 let buffer = self.buffer.read(cx);
2496 let newest_selection = self.newest_anchor_selection().clone();
2497 let (start_buffer, start) = buffer.text_anchor_for_position(newest_selection.start, cx)?;
2498 let (end_buffer, end) = buffer.text_anchor_for_position(newest_selection.end, cx)?;
2499 if start_buffer != end_buffer {
2500 return None;
2501 }
2502
2503 let actions = project.update(cx, |project, cx| {
2504 project.code_actions(&start_buffer, start..end, cx)
2505 });
2506 self.code_actions_task = Some(cx.spawn_weak(|this, mut cx| async move {
2507 let actions = actions.await;
2508 if let Some(this) = this.upgrade(&cx) {
2509 this.update(&mut cx, |this, cx| {
2510 this.available_code_actions = actions.log_err().and_then(|actions| {
2511 if actions.is_empty() {
2512 None
2513 } else {
2514 Some((start_buffer, actions.into()))
2515 }
2516 });
2517 cx.notify();
2518 })
2519 }
2520 }));
2521 None
2522 }
2523
2524 fn refresh_document_highlights(&mut self, cx: &mut ViewContext<Self>) -> Option<()> {
2525 if self.pending_rename.is_some() {
2526 return None;
2527 }
2528
2529 let project = self.project.as_ref()?;
2530 let buffer = self.buffer.read(cx);
2531 let newest_selection = self.newest_anchor_selection().clone();
2532 let cursor_position = newest_selection.head();
2533 let (cursor_buffer, cursor_buffer_position) =
2534 buffer.text_anchor_for_position(cursor_position.clone(), cx)?;
2535 let (tail_buffer, _) = buffer.text_anchor_for_position(newest_selection.tail(), cx)?;
2536 if cursor_buffer != tail_buffer {
2537 return None;
2538 }
2539
2540 let highlights = project.update(cx, |project, cx| {
2541 project.document_highlights(&cursor_buffer, cursor_buffer_position, cx)
2542 });
2543
2544 self.document_highlights_task = Some(cx.spawn_weak(|this, mut cx| async move {
2545 let highlights = highlights.log_err().await;
2546 if let Some((this, highlights)) = this.upgrade(&cx).zip(highlights) {
2547 this.update(&mut cx, |this, cx| {
2548 if this.pending_rename.is_some() {
2549 return;
2550 }
2551
2552 let buffer_id = cursor_position.buffer_id;
2553 let style = this.style(cx);
2554 let read_background = style.document_highlight_read_background;
2555 let write_background = style.document_highlight_write_background;
2556 let buffer = this.buffer.read(cx);
2557 if !buffer
2558 .text_anchor_for_position(cursor_position, cx)
2559 .map_or(false, |(buffer, _)| buffer == cursor_buffer)
2560 {
2561 return;
2562 }
2563
2564 let cursor_buffer_snapshot = cursor_buffer.read(cx);
2565 let mut write_ranges = Vec::new();
2566 let mut read_ranges = Vec::new();
2567 for highlight in highlights {
2568 for (excerpt_id, excerpt_range) in
2569 buffer.excerpts_for_buffer(&cursor_buffer, cx)
2570 {
2571 let start = highlight
2572 .range
2573 .start
2574 .max(&excerpt_range.start, cursor_buffer_snapshot);
2575 let end = highlight
2576 .range
2577 .end
2578 .min(&excerpt_range.end, cursor_buffer_snapshot);
2579 if start.cmp(&end, cursor_buffer_snapshot).is_ge() {
2580 continue;
2581 }
2582
2583 let range = Anchor {
2584 buffer_id,
2585 excerpt_id: excerpt_id.clone(),
2586 text_anchor: start,
2587 }..Anchor {
2588 buffer_id,
2589 excerpt_id,
2590 text_anchor: end,
2591 };
2592 if highlight.kind == lsp::DocumentHighlightKind::WRITE {
2593 write_ranges.push(range);
2594 } else {
2595 read_ranges.push(range);
2596 }
2597 }
2598 }
2599
2600 this.highlight_background::<DocumentHighlightRead>(
2601 read_ranges,
2602 read_background,
2603 cx,
2604 );
2605 this.highlight_background::<DocumentHighlightWrite>(
2606 write_ranges,
2607 write_background,
2608 cx,
2609 );
2610 cx.notify();
2611 });
2612 }
2613 }));
2614 None
2615 }
2616
2617 pub fn render_code_actions_indicator(
2618 &self,
2619 style: &EditorStyle,
2620 cx: &mut ViewContext<Self>,
2621 ) -> Option<ElementBox> {
2622 if self.available_code_actions.is_some() {
2623 enum Tag {}
2624 Some(
2625 MouseEventHandler::new::<Tag, _, _>(0, cx, |_, _| {
2626 Svg::new("icons/zap.svg")
2627 .with_color(style.code_actions_indicator)
2628 .boxed()
2629 })
2630 .with_cursor_style(CursorStyle::PointingHand)
2631 .with_padding(Padding::uniform(3.))
2632 .on_mouse_down(|cx| {
2633 cx.dispatch_action(ToggleCodeActions(true));
2634 })
2635 .boxed(),
2636 )
2637 } else {
2638 None
2639 }
2640 }
2641
2642 pub fn context_menu_visible(&self) -> bool {
2643 self.context_menu
2644 .as_ref()
2645 .map_or(false, |menu| menu.visible())
2646 }
2647
2648 pub fn render_context_menu(
2649 &self,
2650 cursor_position: DisplayPoint,
2651 style: EditorStyle,
2652 cx: &AppContext,
2653 ) -> Option<(DisplayPoint, ElementBox)> {
2654 self.context_menu
2655 .as_ref()
2656 .map(|menu| menu.render(cursor_position, style, cx))
2657 }
2658
2659 fn show_context_menu(&mut self, menu: ContextMenu, cx: &mut ViewContext<Self>) {
2660 if !matches!(menu, ContextMenu::Completions(_)) {
2661 self.completion_tasks.clear();
2662 }
2663 self.context_menu = Some(menu);
2664 cx.notify();
2665 }
2666
2667 fn hide_context_menu(&mut self, cx: &mut ViewContext<Self>) -> Option<ContextMenu> {
2668 cx.notify();
2669 self.completion_tasks.clear();
2670 self.context_menu.take()
2671 }
2672
2673 pub fn insert_snippet(
2674 &mut self,
2675 insertion_ranges: &[Range<usize>],
2676 snippet: Snippet,
2677 cx: &mut ViewContext<Self>,
2678 ) -> Result<()> {
2679 let tabstops = self.buffer.update(cx, |buffer, cx| {
2680 buffer.edit_with_autoindent(insertion_ranges.iter().cloned(), &snippet.text, cx);
2681
2682 let snapshot = &*buffer.read(cx);
2683 let snippet = &snippet;
2684 snippet
2685 .tabstops
2686 .iter()
2687 .map(|tabstop| {
2688 let mut tabstop_ranges = tabstop
2689 .iter()
2690 .flat_map(|tabstop_range| {
2691 let mut delta = 0 as isize;
2692 insertion_ranges.iter().map(move |insertion_range| {
2693 let insertion_start = insertion_range.start as isize + delta;
2694 delta +=
2695 snippet.text.len() as isize - insertion_range.len() as isize;
2696
2697 let start = snapshot.anchor_before(
2698 (insertion_start + tabstop_range.start) as usize,
2699 );
2700 let end = snapshot
2701 .anchor_after((insertion_start + tabstop_range.end) as usize);
2702 start..end
2703 })
2704 })
2705 .collect::<Vec<_>>();
2706 tabstop_ranges.sort_unstable_by(|a, b| a.start.cmp(&b.start, snapshot));
2707 tabstop_ranges
2708 })
2709 .collect::<Vec<_>>()
2710 });
2711
2712 if let Some(tabstop) = tabstops.first() {
2713 self.select_ranges(tabstop.iter().cloned(), Some(Autoscroll::Fit), cx);
2714 self.snippet_stack.push(SnippetState {
2715 active_index: 0,
2716 ranges: tabstops,
2717 });
2718 }
2719
2720 Ok(())
2721 }
2722
2723 pub fn move_to_next_snippet_tabstop(&mut self, cx: &mut ViewContext<Self>) -> bool {
2724 self.move_to_snippet_tabstop(Bias::Right, cx)
2725 }
2726
2727 pub fn move_to_prev_snippet_tabstop(&mut self, cx: &mut ViewContext<Self>) {
2728 self.move_to_snippet_tabstop(Bias::Left, cx);
2729 }
2730
2731 pub fn move_to_snippet_tabstop(&mut self, bias: Bias, cx: &mut ViewContext<Self>) -> bool {
2732 let buffer = self.buffer.read(cx).snapshot(cx);
2733
2734 if let Some(snippet) = self.snippet_stack.last_mut() {
2735 match bias {
2736 Bias::Left => {
2737 if snippet.active_index > 0 {
2738 snippet.active_index -= 1;
2739 } else {
2740 return false;
2741 }
2742 }
2743 Bias::Right => {
2744 if snippet.active_index + 1 < snippet.ranges.len() {
2745 snippet.active_index += 1;
2746 } else {
2747 return false;
2748 }
2749 }
2750 }
2751 if let Some(current_ranges) = snippet.ranges.get(snippet.active_index) {
2752 let new_selections = current_ranges
2753 .iter()
2754 .map(|new_range| {
2755 let new_range = new_range.to_offset(&buffer);
2756 Selection {
2757 id: post_inc(&mut self.next_selection_id),
2758 start: new_range.start,
2759 end: new_range.end,
2760 reversed: false,
2761 goal: SelectionGoal::None,
2762 }
2763 })
2764 .collect();
2765
2766 // Remove the snippet state when moving to the last tabstop.
2767 if snippet.active_index + 1 == snippet.ranges.len() {
2768 self.snippet_stack.pop();
2769 }
2770
2771 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
2772 return true;
2773 }
2774 self.snippet_stack.pop();
2775 }
2776
2777 false
2778 }
2779
2780 pub fn clear(&mut self, cx: &mut ViewContext<Self>) {
2781 self.transact(cx, |this, cx| {
2782 this.select_all(&SelectAll, cx);
2783 this.insert("", cx);
2784 });
2785 }
2786
2787 pub fn backspace(&mut self, _: &Backspace, cx: &mut ViewContext<Self>) {
2788 let mut selections = self.local_selections::<Point>(cx);
2789 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2790 for selection in &mut selections {
2791 if selection.is_empty() {
2792 let old_head = selection.head();
2793 let mut new_head =
2794 movement::left(&display_map, old_head.to_display_point(&display_map))
2795 .to_point(&display_map);
2796 if let Some((buffer, line_buffer_range)) = display_map
2797 .buffer_snapshot
2798 .buffer_line_for_row(old_head.row)
2799 {
2800 let indent_column = buffer.indent_column_for_line(line_buffer_range.start.row);
2801 if old_head.column <= indent_column && old_head.column > 0 {
2802 let indent = buffer.indent_size();
2803 new_head = cmp::min(
2804 new_head,
2805 Point::new(old_head.row, ((old_head.column - 1) / indent) * indent),
2806 );
2807 }
2808 }
2809
2810 selection.set_head(new_head, SelectionGoal::None);
2811 }
2812 }
2813
2814 self.transact(cx, |this, cx| {
2815 this.update_selections(selections, Some(Autoscroll::Fit), cx);
2816 this.insert("", cx);
2817 });
2818 }
2819
2820 pub fn delete(&mut self, _: &Delete, cx: &mut ViewContext<Self>) {
2821 self.transact(cx, |this, cx| {
2822 this.move_selections(cx, |map, selection| {
2823 if selection.is_empty() {
2824 let cursor = movement::right(map, selection.head());
2825 selection.set_head(cursor, SelectionGoal::None);
2826 }
2827 });
2828 this.insert(&"", cx);
2829 });
2830 }
2831
2832 pub fn tab(&mut self, _: &Tab, cx: &mut ViewContext<Self>) {
2833 if self.move_to_next_snippet_tabstop(cx) {
2834 return;
2835 }
2836
2837 let tab_size = cx.global::<Settings>().tab_size;
2838 let mut selections = self.local_selections::<Point>(cx);
2839 self.transact(cx, |this, cx| {
2840 let mut last_indent = None;
2841 this.buffer.update(cx, |buffer, cx| {
2842 for selection in &mut selections {
2843 if selection.is_empty() {
2844 let char_column = buffer
2845 .read(cx)
2846 .text_for_range(Point::new(selection.start.row, 0)..selection.start)
2847 .flat_map(str::chars)
2848 .count();
2849 let chars_to_next_tab_stop = tab_size - (char_column % tab_size);
2850 buffer.edit(
2851 [selection.start..selection.start],
2852 " ".repeat(chars_to_next_tab_stop),
2853 cx,
2854 );
2855 selection.start.column += chars_to_next_tab_stop as u32;
2856 selection.end = selection.start;
2857 } else {
2858 let mut start_row = selection.start.row;
2859 let mut end_row = selection.end.row + 1;
2860
2861 // If a selection ends at the beginning of a line, don't indent
2862 // that last line.
2863 if selection.end.column == 0 {
2864 end_row -= 1;
2865 }
2866
2867 // Avoid re-indenting a row that has already been indented by a
2868 // previous selection, but still update this selection's column
2869 // to reflect that indentation.
2870 if let Some((last_indent_row, last_indent_len)) = last_indent {
2871 if last_indent_row == selection.start.row {
2872 selection.start.column += last_indent_len;
2873 start_row += 1;
2874 }
2875 if last_indent_row == selection.end.row {
2876 selection.end.column += last_indent_len;
2877 }
2878 }
2879
2880 for row in start_row..end_row {
2881 let indent_column =
2882 buffer.read(cx).indent_column_for_line(row) as usize;
2883 let columns_to_next_tab_stop = tab_size - (indent_column % tab_size);
2884 let row_start = Point::new(row, 0);
2885 buffer.edit(
2886 [row_start..row_start],
2887 " ".repeat(columns_to_next_tab_stop),
2888 cx,
2889 );
2890
2891 // Update this selection's endpoints to reflect the indentation.
2892 if row == selection.start.row {
2893 selection.start.column += columns_to_next_tab_stop as u32;
2894 }
2895 if row == selection.end.row {
2896 selection.end.column += columns_to_next_tab_stop as u32;
2897 }
2898
2899 last_indent = Some((row, columns_to_next_tab_stop as u32));
2900 }
2901 }
2902 }
2903 });
2904
2905 this.update_selections(selections, Some(Autoscroll::Fit), cx);
2906 });
2907 }
2908
2909 pub fn outdent(&mut self, _: &Outdent, cx: &mut ViewContext<Self>) {
2910 if !self.snippet_stack.is_empty() {
2911 self.move_to_prev_snippet_tabstop(cx);
2912 return;
2913 }
2914
2915 let tab_size = cx.global::<Settings>().tab_size;
2916 let selections = self.local_selections::<Point>(cx);
2917 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2918 let mut deletion_ranges = Vec::new();
2919 let mut last_outdent = None;
2920 {
2921 let buffer = self.buffer.read(cx).read(cx);
2922 for selection in &selections {
2923 let mut rows = selection.spanned_rows(false, &display_map);
2924
2925 // Avoid re-outdenting a row that has already been outdented by a
2926 // previous selection.
2927 if let Some(last_row) = last_outdent {
2928 if last_row == rows.start {
2929 rows.start += 1;
2930 }
2931 }
2932
2933 for row in rows {
2934 let column = buffer.indent_column_for_line(row) as usize;
2935 if column > 0 {
2936 let mut deletion_len = (column % tab_size) as u32;
2937 if deletion_len == 0 {
2938 deletion_len = tab_size as u32;
2939 }
2940 deletion_ranges.push(Point::new(row, 0)..Point::new(row, deletion_len));
2941 last_outdent = Some(row);
2942 }
2943 }
2944 }
2945 }
2946
2947 self.transact(cx, |this, cx| {
2948 this.buffer.update(cx, |buffer, cx| {
2949 buffer.edit(deletion_ranges, "", cx);
2950 });
2951 this.update_selections(
2952 this.local_selections::<usize>(cx),
2953 Some(Autoscroll::Fit),
2954 cx,
2955 );
2956 });
2957 }
2958
2959 pub fn delete_line(&mut self, _: &DeleteLine, cx: &mut ViewContext<Self>) {
2960 let selections = self.local_selections::<Point>(cx);
2961 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2962 let buffer = self.buffer.read(cx).snapshot(cx);
2963
2964 let mut new_cursors = Vec::new();
2965 let mut edit_ranges = Vec::new();
2966 let mut selections = selections.iter().peekable();
2967 while let Some(selection) = selections.next() {
2968 let mut rows = selection.spanned_rows(false, &display_map);
2969 let goal_display_column = selection.head().to_display_point(&display_map).column();
2970
2971 // Accumulate contiguous regions of rows that we want to delete.
2972 while let Some(next_selection) = selections.peek() {
2973 let next_rows = next_selection.spanned_rows(false, &display_map);
2974 if next_rows.start <= rows.end {
2975 rows.end = next_rows.end;
2976 selections.next().unwrap();
2977 } else {
2978 break;
2979 }
2980 }
2981
2982 let mut edit_start = Point::new(rows.start, 0).to_offset(&buffer);
2983 let edit_end;
2984 let cursor_buffer_row;
2985 if buffer.max_point().row >= rows.end {
2986 // If there's a line after the range, delete the \n from the end of the row range
2987 // and position the cursor on the next line.
2988 edit_end = Point::new(rows.end, 0).to_offset(&buffer);
2989 cursor_buffer_row = rows.end;
2990 } else {
2991 // If there isn't a line after the range, delete the \n from the line before the
2992 // start of the row range and position the cursor there.
2993 edit_start = edit_start.saturating_sub(1);
2994 edit_end = buffer.len();
2995 cursor_buffer_row = rows.start.saturating_sub(1);
2996 }
2997
2998 let mut cursor = Point::new(cursor_buffer_row, 0).to_display_point(&display_map);
2999 *cursor.column_mut() =
3000 cmp::min(goal_display_column, display_map.line_len(cursor.row()));
3001
3002 new_cursors.push((
3003 selection.id,
3004 buffer.anchor_after(cursor.to_point(&display_map)),
3005 ));
3006 edit_ranges.push(edit_start..edit_end);
3007 }
3008
3009 self.transact(cx, |this, cx| {
3010 let buffer = this.buffer.update(cx, |buffer, cx| {
3011 buffer.edit(edit_ranges, "", cx);
3012 buffer.snapshot(cx)
3013 });
3014 let new_selections = new_cursors
3015 .into_iter()
3016 .map(|(id, cursor)| {
3017 let cursor = cursor.to_point(&buffer);
3018 Selection {
3019 id,
3020 start: cursor,
3021 end: cursor,
3022 reversed: false,
3023 goal: SelectionGoal::None,
3024 }
3025 })
3026 .collect();
3027 this.update_selections(new_selections, Some(Autoscroll::Fit), cx);
3028 });
3029 }
3030
3031 pub fn duplicate_line(&mut self, _: &DuplicateLine, cx: &mut ViewContext<Self>) {
3032 let selections = self.local_selections::<Point>(cx);
3033 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3034 let buffer = &display_map.buffer_snapshot;
3035
3036 let mut edits = Vec::new();
3037 let mut selections_iter = selections.iter().peekable();
3038 while let Some(selection) = selections_iter.next() {
3039 // Avoid duplicating the same lines twice.
3040 let mut rows = selection.spanned_rows(false, &display_map);
3041
3042 while let Some(next_selection) = selections_iter.peek() {
3043 let next_rows = next_selection.spanned_rows(false, &display_map);
3044 if next_rows.start <= rows.end - 1 {
3045 rows.end = next_rows.end;
3046 selections_iter.next().unwrap();
3047 } else {
3048 break;
3049 }
3050 }
3051
3052 // Copy the text from the selected row region and splice it at the start of the region.
3053 let start = Point::new(rows.start, 0);
3054 let end = Point::new(rows.end - 1, buffer.line_len(rows.end - 1));
3055 let text = buffer
3056 .text_for_range(start..end)
3057 .chain(Some("\n"))
3058 .collect::<String>();
3059 edits.push((start, text, rows.len() as u32));
3060 }
3061
3062 self.transact(cx, |this, cx| {
3063 this.buffer.update(cx, |buffer, cx| {
3064 for (point, text, _) in edits.into_iter().rev() {
3065 buffer.edit(Some(point..point), text, cx);
3066 }
3067 });
3068
3069 this.request_autoscroll(Autoscroll::Fit, cx);
3070 });
3071 }
3072
3073 pub fn move_line_up(&mut self, _: &MoveLineUp, cx: &mut ViewContext<Self>) {
3074 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3075 let buffer = self.buffer.read(cx).snapshot(cx);
3076
3077 let mut edits = Vec::new();
3078 let mut unfold_ranges = Vec::new();
3079 let mut refold_ranges = Vec::new();
3080
3081 let selections = self.local_selections::<Point>(cx);
3082 let mut selections = selections.iter().peekable();
3083 let mut contiguous_row_selections = Vec::new();
3084 let mut new_selections = Vec::new();
3085
3086 while let Some(selection) = selections.next() {
3087 // Find all the selections that span a contiguous row range
3088 contiguous_row_selections.push(selection.clone());
3089 let start_row = selection.start.row;
3090 let mut end_row = if selection.end.column > 0 || selection.is_empty() {
3091 display_map.next_line_boundary(selection.end).0.row + 1
3092 } else {
3093 selection.end.row
3094 };
3095
3096 while let Some(next_selection) = selections.peek() {
3097 if next_selection.start.row <= end_row {
3098 end_row = if next_selection.end.column > 0 || next_selection.is_empty() {
3099 display_map.next_line_boundary(next_selection.end).0.row + 1
3100 } else {
3101 next_selection.end.row
3102 };
3103 contiguous_row_selections.push(selections.next().unwrap().clone());
3104 } else {
3105 break;
3106 }
3107 }
3108
3109 // Move the text spanned by the row range to be before the line preceding the row range
3110 if start_row > 0 {
3111 let range_to_move = Point::new(start_row - 1, buffer.line_len(start_row - 1))
3112 ..Point::new(end_row - 1, buffer.line_len(end_row - 1));
3113 let insertion_point = display_map
3114 .prev_line_boundary(Point::new(start_row - 1, 0))
3115 .0;
3116
3117 // Don't move lines across excerpts
3118 if buffer
3119 .excerpt_boundaries_in_range((
3120 Bound::Excluded(insertion_point),
3121 Bound::Included(range_to_move.end),
3122 ))
3123 .next()
3124 .is_none()
3125 {
3126 let text = buffer
3127 .text_for_range(range_to_move.clone())
3128 .flat_map(|s| s.chars())
3129 .skip(1)
3130 .chain(['\n'])
3131 .collect::<String>();
3132
3133 edits.push((
3134 buffer.anchor_after(range_to_move.start)
3135 ..buffer.anchor_before(range_to_move.end),
3136 String::new(),
3137 ));
3138 let insertion_anchor = buffer.anchor_after(insertion_point);
3139 edits.push((insertion_anchor.clone()..insertion_anchor, text));
3140
3141 let row_delta = range_to_move.start.row - insertion_point.row + 1;
3142
3143 // Move selections up
3144 new_selections.extend(contiguous_row_selections.drain(..).map(
3145 |mut selection| {
3146 selection.start.row -= row_delta;
3147 selection.end.row -= row_delta;
3148 selection
3149 },
3150 ));
3151
3152 // Move folds up
3153 unfold_ranges.push(range_to_move.clone());
3154 for fold in display_map.folds_in_range(
3155 buffer.anchor_before(range_to_move.start)
3156 ..buffer.anchor_after(range_to_move.end),
3157 ) {
3158 let mut start = fold.start.to_point(&buffer);
3159 let mut end = fold.end.to_point(&buffer);
3160 start.row -= row_delta;
3161 end.row -= row_delta;
3162 refold_ranges.push(start..end);
3163 }
3164 }
3165 }
3166
3167 // If we didn't move line(s), preserve the existing selections
3168 new_selections.extend(contiguous_row_selections.drain(..));
3169 }
3170
3171 self.transact(cx, |this, cx| {
3172 this.unfold_ranges(unfold_ranges, true, cx);
3173 this.buffer.update(cx, |buffer, cx| {
3174 for (range, text) in edits {
3175 buffer.edit([range], text, cx);
3176 }
3177 });
3178 this.fold_ranges(refold_ranges, cx);
3179 this.update_selections(new_selections, Some(Autoscroll::Fit), cx);
3180 });
3181 }
3182
3183 pub fn move_line_down(&mut self, _: &MoveLineDown, cx: &mut ViewContext<Self>) {
3184 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3185 let buffer = self.buffer.read(cx).snapshot(cx);
3186
3187 let mut edits = Vec::new();
3188 let mut unfold_ranges = Vec::new();
3189 let mut refold_ranges = Vec::new();
3190
3191 let selections = self.local_selections::<Point>(cx);
3192 let mut selections = selections.iter().peekable();
3193 let mut contiguous_row_selections = Vec::new();
3194 let mut new_selections = Vec::new();
3195
3196 while let Some(selection) = selections.next() {
3197 // Find all the selections that span a contiguous row range
3198 contiguous_row_selections.push(selection.clone());
3199 let start_row = selection.start.row;
3200 let mut end_row = if selection.end.column > 0 || selection.is_empty() {
3201 display_map.next_line_boundary(selection.end).0.row + 1
3202 } else {
3203 selection.end.row
3204 };
3205
3206 while let Some(next_selection) = selections.peek() {
3207 if next_selection.start.row <= end_row {
3208 end_row = if next_selection.end.column > 0 || next_selection.is_empty() {
3209 display_map.next_line_boundary(next_selection.end).0.row + 1
3210 } else {
3211 next_selection.end.row
3212 };
3213 contiguous_row_selections.push(selections.next().unwrap().clone());
3214 } else {
3215 break;
3216 }
3217 }
3218
3219 // Move the text spanned by the row range to be after the last line of the row range
3220 if end_row <= buffer.max_point().row {
3221 let range_to_move = Point::new(start_row, 0)..Point::new(end_row, 0);
3222 let insertion_point = display_map.next_line_boundary(Point::new(end_row, 0)).0;
3223
3224 // Don't move lines across excerpt boundaries
3225 if buffer
3226 .excerpt_boundaries_in_range((
3227 Bound::Excluded(range_to_move.start),
3228 Bound::Included(insertion_point),
3229 ))
3230 .next()
3231 .is_none()
3232 {
3233 let mut text = String::from("\n");
3234 text.extend(buffer.text_for_range(range_to_move.clone()));
3235 text.pop(); // Drop trailing newline
3236 edits.push((
3237 buffer.anchor_after(range_to_move.start)
3238 ..buffer.anchor_before(range_to_move.end),
3239 String::new(),
3240 ));
3241 let insertion_anchor = buffer.anchor_after(insertion_point);
3242 edits.push((insertion_anchor.clone()..insertion_anchor, text));
3243
3244 let row_delta = insertion_point.row - range_to_move.end.row + 1;
3245
3246 // Move selections down
3247 new_selections.extend(contiguous_row_selections.drain(..).map(
3248 |mut selection| {
3249 selection.start.row += row_delta;
3250 selection.end.row += row_delta;
3251 selection
3252 },
3253 ));
3254
3255 // Move folds down
3256 unfold_ranges.push(range_to_move.clone());
3257 for fold in display_map.folds_in_range(
3258 buffer.anchor_before(range_to_move.start)
3259 ..buffer.anchor_after(range_to_move.end),
3260 ) {
3261 let mut start = fold.start.to_point(&buffer);
3262 let mut end = fold.end.to_point(&buffer);
3263 start.row += row_delta;
3264 end.row += row_delta;
3265 refold_ranges.push(start..end);
3266 }
3267 }
3268 }
3269
3270 // If we didn't move line(s), preserve the existing selections
3271 new_selections.extend(contiguous_row_selections.drain(..));
3272 }
3273
3274 self.transact(cx, |this, cx| {
3275 this.unfold_ranges(unfold_ranges, true, cx);
3276 this.buffer.update(cx, |buffer, cx| {
3277 for (range, text) in edits {
3278 buffer.edit([range], text, cx);
3279 }
3280 });
3281 this.fold_ranges(refold_ranges, cx);
3282 this.update_selections(new_selections, Some(Autoscroll::Fit), cx);
3283 });
3284 }
3285
3286 pub fn cut(&mut self, _: &Cut, cx: &mut ViewContext<Self>) {
3287 let mut text = String::new();
3288 let mut selections = self.local_selections::<Point>(cx);
3289 let mut clipboard_selections = Vec::with_capacity(selections.len());
3290 {
3291 let buffer = self.buffer.read(cx).read(cx);
3292 let max_point = buffer.max_point();
3293 for selection in &mut selections {
3294 let is_entire_line = selection.is_empty();
3295 if is_entire_line {
3296 selection.start = Point::new(selection.start.row, 0);
3297 selection.end = cmp::min(max_point, Point::new(selection.end.row + 1, 0));
3298 selection.goal = SelectionGoal::None;
3299 }
3300 let mut len = 0;
3301 for chunk in buffer.text_for_range(selection.start..selection.end) {
3302 text.push_str(chunk);
3303 len += chunk.len();
3304 }
3305 clipboard_selections.push(ClipboardSelection {
3306 len,
3307 is_entire_line,
3308 });
3309 }
3310 }
3311
3312 self.transact(cx, |this, cx| {
3313 this.update_selections(selections, Some(Autoscroll::Fit), cx);
3314 this.insert("", cx);
3315 cx.write_to_clipboard(ClipboardItem::new(text).with_metadata(clipboard_selections));
3316 });
3317 }
3318
3319 pub fn copy(&mut self, _: &Copy, cx: &mut ViewContext<Self>) {
3320 let selections = self.local_selections::<Point>(cx);
3321 let mut text = String::new();
3322 let mut clipboard_selections = Vec::with_capacity(selections.len());
3323 {
3324 let buffer = self.buffer.read(cx).read(cx);
3325 let max_point = buffer.max_point();
3326 for selection in selections.iter() {
3327 let mut start = selection.start;
3328 let mut end = selection.end;
3329 let is_entire_line = selection.is_empty();
3330 if is_entire_line {
3331 start = Point::new(start.row, 0);
3332 end = cmp::min(max_point, Point::new(start.row + 1, 0));
3333 }
3334 let mut len = 0;
3335 for chunk in buffer.text_for_range(start..end) {
3336 text.push_str(chunk);
3337 len += chunk.len();
3338 }
3339 clipboard_selections.push(ClipboardSelection {
3340 len,
3341 is_entire_line,
3342 });
3343 }
3344 }
3345
3346 cx.write_to_clipboard(ClipboardItem::new(text).with_metadata(clipboard_selections));
3347 }
3348
3349 pub fn paste(&mut self, _: &Paste, cx: &mut ViewContext<Self>) {
3350 self.transact(cx, |this, cx| {
3351 if let Some(item) = cx.as_mut().read_from_clipboard() {
3352 let clipboard_text = item.text();
3353 if let Some(mut clipboard_selections) = item.metadata::<Vec<ClipboardSelection>>() {
3354 let mut selections = this.local_selections::<usize>(cx);
3355 let all_selections_were_entire_line =
3356 clipboard_selections.iter().all(|s| s.is_entire_line);
3357 if clipboard_selections.len() != selections.len() {
3358 clipboard_selections.clear();
3359 }
3360
3361 let mut delta = 0_isize;
3362 let mut start_offset = 0;
3363 for (i, selection) in selections.iter_mut().enumerate() {
3364 let to_insert;
3365 let entire_line;
3366 if let Some(clipboard_selection) = clipboard_selections.get(i) {
3367 let end_offset = start_offset + clipboard_selection.len;
3368 to_insert = &clipboard_text[start_offset..end_offset];
3369 entire_line = clipboard_selection.is_entire_line;
3370 start_offset = end_offset
3371 } else {
3372 to_insert = clipboard_text.as_str();
3373 entire_line = all_selections_were_entire_line;
3374 }
3375
3376 selection.start = (selection.start as isize + delta) as usize;
3377 selection.end = (selection.end as isize + delta) as usize;
3378
3379 this.buffer.update(cx, |buffer, cx| {
3380 // If the corresponding selection was empty when this slice of the
3381 // clipboard text was written, then the entire line containing the
3382 // selection was copied. If this selection is also currently empty,
3383 // then paste the line before the current line of the buffer.
3384 let range = if selection.is_empty() && entire_line {
3385 let column =
3386 selection.start.to_point(&buffer.read(cx)).column as usize;
3387 let line_start = selection.start - column;
3388 line_start..line_start
3389 } else {
3390 selection.start..selection.end
3391 };
3392
3393 delta += to_insert.len() as isize - range.len() as isize;
3394 buffer.edit([range], to_insert, cx);
3395 selection.start += to_insert.len();
3396 selection.end = selection.start;
3397 });
3398 }
3399 this.update_selections(selections, Some(Autoscroll::Fit), cx);
3400 } else {
3401 this.insert(clipboard_text, cx);
3402 }
3403 }
3404 });
3405 }
3406
3407 pub fn undo(&mut self, _: &Undo, cx: &mut ViewContext<Self>) {
3408 if let Some(tx_id) = self.buffer.update(cx, |buffer, cx| buffer.undo(cx)) {
3409 if let Some((selections, _)) = self.selection_history.get(&tx_id).cloned() {
3410 self.set_selections(selections, None, true, cx);
3411 }
3412 self.request_autoscroll(Autoscroll::Fit, cx);
3413 cx.emit(Event::Edited);
3414 }
3415 }
3416
3417 pub fn redo(&mut self, _: &Redo, cx: &mut ViewContext<Self>) {
3418 if let Some(tx_id) = self.buffer.update(cx, |buffer, cx| buffer.redo(cx)) {
3419 if let Some((_, Some(selections))) = self.selection_history.get(&tx_id).cloned() {
3420 self.set_selections(selections, None, true, cx);
3421 }
3422 self.request_autoscroll(Autoscroll::Fit, cx);
3423 cx.emit(Event::Edited);
3424 }
3425 }
3426
3427 pub fn finalize_last_transaction(&mut self, cx: &mut ViewContext<Self>) {
3428 self.buffer
3429 .update(cx, |buffer, cx| buffer.finalize_last_transaction(cx));
3430 }
3431
3432 pub fn move_left(&mut self, _: &MoveLeft, cx: &mut ViewContext<Self>) {
3433 self.move_selections(cx, |map, selection| {
3434 let cursor = if selection.is_empty() {
3435 movement::left(map, selection.start)
3436 } else {
3437 selection.start
3438 };
3439 selection.collapse_to(cursor, SelectionGoal::None);
3440 });
3441 }
3442
3443 pub fn select_left(&mut self, _: &SelectLeft, cx: &mut ViewContext<Self>) {
3444 self.move_selection_heads(cx, |map, head, _| {
3445 (movement::left(map, head), SelectionGoal::None)
3446 });
3447 }
3448
3449 pub fn move_right(&mut self, _: &MoveRight, cx: &mut ViewContext<Self>) {
3450 self.move_selections(cx, |map, selection| {
3451 let cursor = if selection.is_empty() {
3452 movement::right(map, selection.end)
3453 } else {
3454 selection.end
3455 };
3456 selection.collapse_to(cursor, SelectionGoal::None)
3457 });
3458 }
3459
3460 pub fn select_right(&mut self, _: &SelectRight, cx: &mut ViewContext<Self>) {
3461 self.move_selection_heads(cx, |map, head, _| {
3462 (movement::right(map, head), SelectionGoal::None)
3463 });
3464 }
3465
3466 pub fn move_up(&mut self, _: &MoveUp, cx: &mut ViewContext<Self>) {
3467 if self.take_rename(true, cx).is_some() {
3468 return;
3469 }
3470
3471 if let Some(context_menu) = self.context_menu.as_mut() {
3472 if context_menu.select_prev(cx) {
3473 return;
3474 }
3475 }
3476
3477 if matches!(self.mode, EditorMode::SingleLine) {
3478 cx.propagate_action();
3479 return;
3480 }
3481
3482 self.move_selections(cx, |map, selection| {
3483 if !selection.is_empty() {
3484 selection.goal = SelectionGoal::None;
3485 }
3486 let (cursor, goal) = movement::up(&map, selection.start, selection.goal);
3487 selection.collapse_to(cursor, goal);
3488 });
3489 }
3490
3491 pub fn select_up(&mut self, _: &SelectUp, cx: &mut ViewContext<Self>) {
3492 self.move_selection_heads(cx, movement::up)
3493 }
3494
3495 pub fn move_down(&mut self, _: &MoveDown, cx: &mut ViewContext<Self>) {
3496 self.take_rename(true, cx);
3497
3498 if let Some(context_menu) = self.context_menu.as_mut() {
3499 if context_menu.select_next(cx) {
3500 return;
3501 }
3502 }
3503
3504 if matches!(self.mode, EditorMode::SingleLine) {
3505 cx.propagate_action();
3506 return;
3507 }
3508
3509 self.move_selections(cx, |map, selection| {
3510 if !selection.is_empty() {
3511 selection.goal = SelectionGoal::None;
3512 }
3513 let (cursor, goal) = movement::down(&map, selection.end, selection.goal);
3514 selection.collapse_to(cursor, goal);
3515 });
3516 }
3517
3518 pub fn select_down(&mut self, _: &SelectDown, cx: &mut ViewContext<Self>) {
3519 self.move_selection_heads(cx, movement::down)
3520 }
3521
3522 pub fn move_to_previous_word_start(
3523 &mut self,
3524 _: &MoveToPreviousWordStart,
3525 cx: &mut ViewContext<Self>,
3526 ) {
3527 self.move_cursors(cx, |map, head, _| {
3528 (
3529 movement::previous_word_start(map, head),
3530 SelectionGoal::None,
3531 )
3532 });
3533 }
3534
3535 pub fn select_to_previous_word_start(
3536 &mut self,
3537 _: &SelectToPreviousWordBoundary,
3538 cx: &mut ViewContext<Self>,
3539 ) {
3540 self.move_selection_heads(cx, |map, head, _| {
3541 (
3542 movement::previous_word_start(map, head),
3543 SelectionGoal::None,
3544 )
3545 });
3546 }
3547
3548 pub fn delete_to_previous_word_start(
3549 &mut self,
3550 _: &DeleteToPreviousWordBoundary,
3551 cx: &mut ViewContext<Self>,
3552 ) {
3553 self.transact(cx, |this, cx| {
3554 this.move_selections(cx, |map, selection| {
3555 if selection.is_empty() {
3556 let cursor = movement::previous_word_start(map, selection.head());
3557 selection.set_head(cursor, SelectionGoal::None);
3558 }
3559 });
3560 this.insert("", cx);
3561 });
3562 }
3563
3564 pub fn move_to_next_word_end(&mut self, _: &MoveToNextWordEnd, cx: &mut ViewContext<Self>) {
3565 self.move_cursors(cx, |map, head, _| {
3566 (movement::next_word_end(map, head), SelectionGoal::None)
3567 });
3568 }
3569
3570 pub fn select_to_next_word_end(
3571 &mut self,
3572 _: &SelectToNextWordBoundary,
3573 cx: &mut ViewContext<Self>,
3574 ) {
3575 self.move_selection_heads(cx, |map, head, _| {
3576 (movement::next_word_end(map, head), SelectionGoal::None)
3577 });
3578 }
3579
3580 pub fn delete_to_next_word_end(
3581 &mut self,
3582 _: &DeleteToNextWordBoundary,
3583 cx: &mut ViewContext<Self>,
3584 ) {
3585 self.transact(cx, |this, cx| {
3586 this.move_selections(cx, |map, selection| {
3587 if selection.is_empty() {
3588 let cursor = movement::next_word_end(map, selection.head());
3589 selection.set_head(cursor, SelectionGoal::None);
3590 }
3591 });
3592 this.insert("", cx);
3593 });
3594 }
3595
3596 pub fn move_to_beginning_of_line(
3597 &mut self,
3598 _: &MoveToBeginningOfLine,
3599 cx: &mut ViewContext<Self>,
3600 ) {
3601 self.move_cursors(cx, |map, head, _| {
3602 (
3603 movement::line_beginning(map, head, true),
3604 SelectionGoal::None,
3605 )
3606 });
3607 }
3608
3609 pub fn select_to_beginning_of_line(
3610 &mut self,
3611 SelectToBeginningOfLine(stop_at_soft_boundaries): &SelectToBeginningOfLine,
3612 cx: &mut ViewContext<Self>,
3613 ) {
3614 self.move_selection_heads(cx, |map, head, _| {
3615 (
3616 movement::line_beginning(map, head, *stop_at_soft_boundaries),
3617 SelectionGoal::None,
3618 )
3619 });
3620 }
3621
3622 pub fn delete_to_beginning_of_line(
3623 &mut self,
3624 _: &DeleteToBeginningOfLine,
3625 cx: &mut ViewContext<Self>,
3626 ) {
3627 self.transact(cx, |this, cx| {
3628 this.select_to_beginning_of_line(&SelectToBeginningOfLine(false), cx);
3629 this.backspace(&Backspace, cx);
3630 });
3631 }
3632
3633 pub fn move_to_end_of_line(&mut self, _: &MoveToEndOfLine, cx: &mut ViewContext<Self>) {
3634 self.move_cursors(cx, |map, head, _| {
3635 (movement::line_end(map, head, true), SelectionGoal::None)
3636 });
3637 }
3638
3639 pub fn select_to_end_of_line(
3640 &mut self,
3641 SelectToEndOfLine(stop_at_soft_boundaries): &SelectToEndOfLine,
3642 cx: &mut ViewContext<Self>,
3643 ) {
3644 self.move_selection_heads(cx, |map, head, _| {
3645 (
3646 movement::line_end(map, head, *stop_at_soft_boundaries),
3647 SelectionGoal::None,
3648 )
3649 });
3650 }
3651
3652 pub fn delete_to_end_of_line(&mut self, _: &DeleteToEndOfLine, cx: &mut ViewContext<Self>) {
3653 self.transact(cx, |this, cx| {
3654 this.select_to_end_of_line(&SelectToEndOfLine(false), cx);
3655 this.delete(&Delete, cx);
3656 });
3657 }
3658
3659 pub fn cut_to_end_of_line(&mut self, _: &CutToEndOfLine, cx: &mut ViewContext<Self>) {
3660 self.transact(cx, |this, cx| {
3661 this.select_to_end_of_line(&SelectToEndOfLine(false), cx);
3662 this.cut(&Cut, cx);
3663 });
3664 }
3665
3666 pub fn move_to_beginning(&mut self, _: &MoveToBeginning, cx: &mut ViewContext<Self>) {
3667 if matches!(self.mode, EditorMode::SingleLine) {
3668 cx.propagate_action();
3669 return;
3670 }
3671
3672 let selection = Selection {
3673 id: post_inc(&mut self.next_selection_id),
3674 start: 0,
3675 end: 0,
3676 reversed: false,
3677 goal: SelectionGoal::None,
3678 };
3679 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
3680 }
3681
3682 pub fn select_to_beginning(&mut self, _: &SelectToBeginning, cx: &mut ViewContext<Self>) {
3683 let mut selection = self.local_selections::<Point>(cx).last().unwrap().clone();
3684 selection.set_head(Point::zero(), SelectionGoal::None);
3685 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
3686 }
3687
3688 pub fn move_to_end(&mut self, _: &MoveToEnd, cx: &mut ViewContext<Self>) {
3689 if matches!(self.mode, EditorMode::SingleLine) {
3690 cx.propagate_action();
3691 return;
3692 }
3693
3694 let cursor = self.buffer.read(cx).read(cx).len();
3695 let selection = Selection {
3696 id: post_inc(&mut self.next_selection_id),
3697 start: cursor,
3698 end: cursor,
3699 reversed: false,
3700 goal: SelectionGoal::None,
3701 };
3702 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
3703 }
3704
3705 pub fn set_nav_history(&mut self, nav_history: Option<ItemNavHistory>) {
3706 self.nav_history = nav_history;
3707 }
3708
3709 pub fn nav_history(&self) -> Option<&ItemNavHistory> {
3710 self.nav_history.as_ref()
3711 }
3712
3713 fn push_to_nav_history(
3714 &self,
3715 position: Anchor,
3716 new_position: Option<Point>,
3717 cx: &mut ViewContext<Self>,
3718 ) {
3719 if let Some(nav_history) = &self.nav_history {
3720 let buffer = self.buffer.read(cx).read(cx);
3721 let offset = position.to_offset(&buffer);
3722 let point = position.to_point(&buffer);
3723 drop(buffer);
3724
3725 if let Some(new_position) = new_position {
3726 let row_delta = (new_position.row as i64 - point.row as i64).abs();
3727 if row_delta < MIN_NAVIGATION_HISTORY_ROW_DELTA {
3728 return;
3729 }
3730 }
3731
3732 nav_history.push(Some(NavigationData {
3733 anchor: position,
3734 offset,
3735 }));
3736 }
3737 }
3738
3739 pub fn select_to_end(&mut self, _: &SelectToEnd, cx: &mut ViewContext<Self>) {
3740 let mut selection = self.local_selections::<usize>(cx).first().unwrap().clone();
3741 selection.set_head(self.buffer.read(cx).read(cx).len(), SelectionGoal::None);
3742 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
3743 }
3744
3745 pub fn select_all(&mut self, _: &SelectAll, cx: &mut ViewContext<Self>) {
3746 let selection = Selection {
3747 id: post_inc(&mut self.next_selection_id),
3748 start: 0,
3749 end: self.buffer.read(cx).read(cx).len(),
3750 reversed: false,
3751 goal: SelectionGoal::None,
3752 };
3753 self.update_selections(vec![selection], None, cx);
3754 }
3755
3756 pub fn select_line(&mut self, _: &SelectLine, cx: &mut ViewContext<Self>) {
3757 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3758 let mut selections = self.local_selections::<Point>(cx);
3759 let max_point = display_map.buffer_snapshot.max_point();
3760 for selection in &mut selections {
3761 let rows = selection.spanned_rows(true, &display_map);
3762 selection.start = Point::new(rows.start, 0);
3763 selection.end = cmp::min(max_point, Point::new(rows.end, 0));
3764 selection.reversed = false;
3765 }
3766 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3767 }
3768
3769 pub fn split_selection_into_lines(
3770 &mut self,
3771 _: &SplitSelectionIntoLines,
3772 cx: &mut ViewContext<Self>,
3773 ) {
3774 let mut to_unfold = Vec::new();
3775 let mut new_selections = Vec::new();
3776 {
3777 let selections = self.local_selections::<Point>(cx);
3778 let buffer = self.buffer.read(cx).read(cx);
3779 for selection in selections {
3780 for row in selection.start.row..selection.end.row {
3781 let cursor = Point::new(row, buffer.line_len(row));
3782 new_selections.push(Selection {
3783 id: post_inc(&mut self.next_selection_id),
3784 start: cursor,
3785 end: cursor,
3786 reversed: false,
3787 goal: SelectionGoal::None,
3788 });
3789 }
3790 new_selections.push(Selection {
3791 id: selection.id,
3792 start: selection.end,
3793 end: selection.end,
3794 reversed: false,
3795 goal: SelectionGoal::None,
3796 });
3797 to_unfold.push(selection.start..selection.end);
3798 }
3799 }
3800 self.unfold_ranges(to_unfold, true, cx);
3801 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
3802 }
3803
3804 pub fn add_selection_above(&mut self, _: &AddSelectionAbove, cx: &mut ViewContext<Self>) {
3805 self.add_selection(true, cx);
3806 }
3807
3808 pub fn add_selection_below(&mut self, _: &AddSelectionBelow, cx: &mut ViewContext<Self>) {
3809 self.add_selection(false, cx);
3810 }
3811
3812 fn add_selection(&mut self, above: bool, cx: &mut ViewContext<Self>) {
3813 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3814 let mut selections = self.local_selections::<Point>(cx);
3815 let mut state = self.add_selections_state.take().unwrap_or_else(|| {
3816 let oldest_selection = selections.iter().min_by_key(|s| s.id).unwrap().clone();
3817 let range = oldest_selection.display_range(&display_map).sorted();
3818 let columns = cmp::min(range.start.column(), range.end.column())
3819 ..cmp::max(range.start.column(), range.end.column());
3820
3821 selections.clear();
3822 let mut stack = Vec::new();
3823 for row in range.start.row()..=range.end.row() {
3824 if let Some(selection) = self.build_columnar_selection(
3825 &display_map,
3826 row,
3827 &columns,
3828 oldest_selection.reversed,
3829 ) {
3830 stack.push(selection.id);
3831 selections.push(selection);
3832 }
3833 }
3834
3835 if above {
3836 stack.reverse();
3837 }
3838
3839 AddSelectionsState { above, stack }
3840 });
3841
3842 let last_added_selection = *state.stack.last().unwrap();
3843 let mut new_selections = Vec::new();
3844 if above == state.above {
3845 let end_row = if above {
3846 0
3847 } else {
3848 display_map.max_point().row()
3849 };
3850
3851 'outer: for selection in selections {
3852 if selection.id == last_added_selection {
3853 let range = selection.display_range(&display_map).sorted();
3854 debug_assert_eq!(range.start.row(), range.end.row());
3855 let mut row = range.start.row();
3856 let columns = if let SelectionGoal::ColumnRange { start, end } = selection.goal
3857 {
3858 start..end
3859 } else {
3860 cmp::min(range.start.column(), range.end.column())
3861 ..cmp::max(range.start.column(), range.end.column())
3862 };
3863
3864 while row != end_row {
3865 if above {
3866 row -= 1;
3867 } else {
3868 row += 1;
3869 }
3870
3871 if let Some(new_selection) = self.build_columnar_selection(
3872 &display_map,
3873 row,
3874 &columns,
3875 selection.reversed,
3876 ) {
3877 state.stack.push(new_selection.id);
3878 if above {
3879 new_selections.push(new_selection);
3880 new_selections.push(selection);
3881 } else {
3882 new_selections.push(selection);
3883 new_selections.push(new_selection);
3884 }
3885
3886 continue 'outer;
3887 }
3888 }
3889 }
3890
3891 new_selections.push(selection);
3892 }
3893 } else {
3894 new_selections = selections;
3895 new_selections.retain(|s| s.id != last_added_selection);
3896 state.stack.pop();
3897 }
3898
3899 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
3900 if state.stack.len() > 1 {
3901 self.add_selections_state = Some(state);
3902 }
3903 }
3904
3905 pub fn select_next(&mut self, action: &SelectNext, cx: &mut ViewContext<Self>) {
3906 let replace_newest = action.0;
3907 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3908 let buffer = &display_map.buffer_snapshot;
3909 let mut selections = self.local_selections::<usize>(cx);
3910 if let Some(mut select_next_state) = self.select_next_state.take() {
3911 let query = &select_next_state.query;
3912 if !select_next_state.done {
3913 let first_selection = selections.iter().min_by_key(|s| s.id).unwrap();
3914 let last_selection = selections.iter().max_by_key(|s| s.id).unwrap();
3915 let mut next_selected_range = None;
3916
3917 let bytes_after_last_selection =
3918 buffer.bytes_in_range(last_selection.end..buffer.len());
3919 let bytes_before_first_selection = buffer.bytes_in_range(0..first_selection.start);
3920 let query_matches = query
3921 .stream_find_iter(bytes_after_last_selection)
3922 .map(|result| (last_selection.end, result))
3923 .chain(
3924 query
3925 .stream_find_iter(bytes_before_first_selection)
3926 .map(|result| (0, result)),
3927 );
3928 for (start_offset, query_match) in query_matches {
3929 let query_match = query_match.unwrap(); // can only fail due to I/O
3930 let offset_range =
3931 start_offset + query_match.start()..start_offset + query_match.end();
3932 let display_range = offset_range.start.to_display_point(&display_map)
3933 ..offset_range.end.to_display_point(&display_map);
3934
3935 if !select_next_state.wordwise
3936 || (!movement::is_inside_word(&display_map, display_range.start)
3937 && !movement::is_inside_word(&display_map, display_range.end))
3938 {
3939 next_selected_range = Some(offset_range);
3940 break;
3941 }
3942 }
3943
3944 if let Some(next_selected_range) = next_selected_range {
3945 if replace_newest {
3946 if let Some(newest_id) =
3947 selections.iter().max_by_key(|s| s.id).map(|s| s.id)
3948 {
3949 selections.retain(|s| s.id != newest_id);
3950 }
3951 }
3952 selections.push(Selection {
3953 id: post_inc(&mut self.next_selection_id),
3954 start: next_selected_range.start,
3955 end: next_selected_range.end,
3956 reversed: false,
3957 goal: SelectionGoal::None,
3958 });
3959 self.unfold_ranges([next_selected_range], false, cx);
3960 self.update_selections(selections, Some(Autoscroll::Newest), cx);
3961 } else {
3962 select_next_state.done = true;
3963 }
3964 }
3965
3966 self.select_next_state = Some(select_next_state);
3967 } else if selections.len() == 1 {
3968 let selection = selections.last_mut().unwrap();
3969 if selection.start == selection.end {
3970 let word_range = movement::surrounding_word(
3971 &display_map,
3972 selection.start.to_display_point(&display_map),
3973 );
3974 selection.start = word_range.start.to_offset(&display_map, Bias::Left);
3975 selection.end = word_range.end.to_offset(&display_map, Bias::Left);
3976 selection.goal = SelectionGoal::None;
3977 selection.reversed = false;
3978
3979 let query = buffer
3980 .text_for_range(selection.start..selection.end)
3981 .collect::<String>();
3982 let select_state = SelectNextState {
3983 query: AhoCorasick::new_auto_configured(&[query]),
3984 wordwise: true,
3985 done: false,
3986 };
3987 self.unfold_ranges([selection.start..selection.end], false, cx);
3988 self.update_selections(selections, Some(Autoscroll::Newest), cx);
3989 self.select_next_state = Some(select_state);
3990 } else {
3991 let query = buffer
3992 .text_for_range(selection.start..selection.end)
3993 .collect::<String>();
3994 self.select_next_state = Some(SelectNextState {
3995 query: AhoCorasick::new_auto_configured(&[query]),
3996 wordwise: false,
3997 done: false,
3998 });
3999 self.select_next(action, cx);
4000 }
4001 }
4002 }
4003
4004 pub fn toggle_comments(&mut self, _: &ToggleComments, cx: &mut ViewContext<Self>) {
4005 // Get the line comment prefix. Split its trailing whitespace into a separate string,
4006 // as that portion won't be used for detecting if a line is a comment.
4007 let full_comment_prefix =
4008 if let Some(prefix) = self.language(cx).and_then(|l| l.line_comment_prefix()) {
4009 prefix.to_string()
4010 } else {
4011 return;
4012 };
4013 let comment_prefix = full_comment_prefix.trim_end_matches(' ');
4014 let comment_prefix_whitespace = &full_comment_prefix[comment_prefix.len()..];
4015
4016 self.transact(cx, |this, cx| {
4017 let mut selections = this.local_selections::<Point>(cx);
4018 let mut all_selection_lines_are_comments = true;
4019 let mut edit_ranges = Vec::new();
4020 let mut last_toggled_row = None;
4021 this.buffer.update(cx, |buffer, cx| {
4022 for selection in &mut selections {
4023 edit_ranges.clear();
4024 let snapshot = buffer.snapshot(cx);
4025
4026 let end_row =
4027 if selection.end.row > selection.start.row && selection.end.column == 0 {
4028 selection.end.row
4029 } else {
4030 selection.end.row + 1
4031 };
4032
4033 for row in selection.start.row..end_row {
4034 // If multiple selections contain a given row, avoid processing that
4035 // row more than once.
4036 if last_toggled_row == Some(row) {
4037 continue;
4038 } else {
4039 last_toggled_row = Some(row);
4040 }
4041
4042 if snapshot.is_line_blank(row) {
4043 continue;
4044 }
4045
4046 let start = Point::new(row, snapshot.indent_column_for_line(row));
4047 let mut line_bytes = snapshot
4048 .bytes_in_range(start..snapshot.max_point())
4049 .flatten()
4050 .copied();
4051
4052 // If this line currently begins with the line comment prefix, then record
4053 // the range containing the prefix.
4054 if all_selection_lines_are_comments
4055 && line_bytes
4056 .by_ref()
4057 .take(comment_prefix.len())
4058 .eq(comment_prefix.bytes())
4059 {
4060 // Include any whitespace that matches the comment prefix.
4061 let matching_whitespace_len = line_bytes
4062 .zip(comment_prefix_whitespace.bytes())
4063 .take_while(|(a, b)| a == b)
4064 .count()
4065 as u32;
4066 let end = Point::new(
4067 row,
4068 start.column
4069 + comment_prefix.len() as u32
4070 + matching_whitespace_len,
4071 );
4072 edit_ranges.push(start..end);
4073 }
4074 // If this line does not begin with the line comment prefix, then record
4075 // the position where the prefix should be inserted.
4076 else {
4077 all_selection_lines_are_comments = false;
4078 edit_ranges.push(start..start);
4079 }
4080 }
4081
4082 if !edit_ranges.is_empty() {
4083 if all_selection_lines_are_comments {
4084 buffer.edit(edit_ranges.iter().cloned(), "", cx);
4085 } else {
4086 let min_column =
4087 edit_ranges.iter().map(|r| r.start.column).min().unwrap();
4088 let edit_ranges = edit_ranges.iter().map(|range| {
4089 let position = Point::new(range.start.row, min_column);
4090 position..position
4091 });
4092 buffer.edit(edit_ranges, &full_comment_prefix, cx);
4093 }
4094 }
4095 }
4096 });
4097
4098 this.update_selections(
4099 this.local_selections::<usize>(cx),
4100 Some(Autoscroll::Fit),
4101 cx,
4102 );
4103 });
4104 }
4105
4106 pub fn select_larger_syntax_node(
4107 &mut self,
4108 _: &SelectLargerSyntaxNode,
4109 cx: &mut ViewContext<Self>,
4110 ) {
4111 let old_selections = self.local_selections::<usize>(cx).into_boxed_slice();
4112 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
4113 let buffer = self.buffer.read(cx).snapshot(cx);
4114
4115 let mut stack = mem::take(&mut self.select_larger_syntax_node_stack);
4116 let mut selected_larger_node = false;
4117 let new_selections = old_selections
4118 .iter()
4119 .map(|selection| {
4120 let old_range = selection.start..selection.end;
4121 let mut new_range = old_range.clone();
4122 while let Some(containing_range) =
4123 buffer.range_for_syntax_ancestor(new_range.clone())
4124 {
4125 new_range = containing_range;
4126 if !display_map.intersects_fold(new_range.start)
4127 && !display_map.intersects_fold(new_range.end)
4128 {
4129 break;
4130 }
4131 }
4132
4133 selected_larger_node |= new_range != old_range;
4134 Selection {
4135 id: selection.id,
4136 start: new_range.start,
4137 end: new_range.end,
4138 goal: SelectionGoal::None,
4139 reversed: selection.reversed,
4140 }
4141 })
4142 .collect::<Vec<_>>();
4143
4144 if selected_larger_node {
4145 stack.push(old_selections);
4146 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
4147 }
4148 self.select_larger_syntax_node_stack = stack;
4149 }
4150
4151 pub fn select_smaller_syntax_node(
4152 &mut self,
4153 _: &SelectSmallerSyntaxNode,
4154 cx: &mut ViewContext<Self>,
4155 ) {
4156 let mut stack = mem::take(&mut self.select_larger_syntax_node_stack);
4157 if let Some(selections) = stack.pop() {
4158 self.update_selections(selections.to_vec(), Some(Autoscroll::Fit), cx);
4159 }
4160 self.select_larger_syntax_node_stack = stack;
4161 }
4162
4163 pub fn move_to_enclosing_bracket(
4164 &mut self,
4165 _: &MoveToEnclosingBracket,
4166 cx: &mut ViewContext<Self>,
4167 ) {
4168 let mut selections = self.local_selections::<usize>(cx);
4169 let buffer = self.buffer.read(cx).snapshot(cx);
4170 for selection in &mut selections {
4171 if let Some((open_range, close_range)) =
4172 buffer.enclosing_bracket_ranges(selection.start..selection.end)
4173 {
4174 let close_range = close_range.to_inclusive();
4175 let destination = if close_range.contains(&selection.start)
4176 && close_range.contains(&selection.end)
4177 {
4178 open_range.end
4179 } else {
4180 *close_range.start()
4181 };
4182 selection.start = destination;
4183 selection.end = destination;
4184 }
4185 }
4186
4187 self.update_selections(selections, Some(Autoscroll::Fit), cx);
4188 }
4189
4190 pub fn go_to_diagnostic(
4191 &mut self,
4192 &GoToDiagnostic(direction): &GoToDiagnostic,
4193 cx: &mut ViewContext<Self>,
4194 ) {
4195 let buffer = self.buffer.read(cx).snapshot(cx);
4196 let selection = self.newest_selection_with_snapshot::<usize>(&buffer);
4197 let mut active_primary_range = self.active_diagnostics.as_ref().map(|active_diagnostics| {
4198 active_diagnostics
4199 .primary_range
4200 .to_offset(&buffer)
4201 .to_inclusive()
4202 });
4203 let mut search_start = if let Some(active_primary_range) = active_primary_range.as_ref() {
4204 if active_primary_range.contains(&selection.head()) {
4205 *active_primary_range.end()
4206 } else {
4207 selection.head()
4208 }
4209 } else {
4210 selection.head()
4211 };
4212
4213 loop {
4214 let mut diagnostics = if direction == Direction::Prev {
4215 buffer.diagnostics_in_range::<_, usize>(0..search_start, true)
4216 } else {
4217 buffer.diagnostics_in_range::<_, usize>(search_start..buffer.len(), false)
4218 };
4219 let group = diagnostics.find_map(|entry| {
4220 if entry.diagnostic.is_primary
4221 && entry.diagnostic.severity <= DiagnosticSeverity::WARNING
4222 && !entry.range.is_empty()
4223 && Some(entry.range.end) != active_primary_range.as_ref().map(|r| *r.end())
4224 {
4225 Some((entry.range, entry.diagnostic.group_id))
4226 } else {
4227 None
4228 }
4229 });
4230
4231 if let Some((primary_range, group_id)) = group {
4232 self.activate_diagnostics(group_id, cx);
4233 self.update_selections(
4234 vec![Selection {
4235 id: selection.id,
4236 start: primary_range.start,
4237 end: primary_range.start,
4238 reversed: false,
4239 goal: SelectionGoal::None,
4240 }],
4241 Some(Autoscroll::Center),
4242 cx,
4243 );
4244 break;
4245 } else {
4246 // Cycle around to the start of the buffer, potentially moving back to the start of
4247 // the currently active diagnostic.
4248 active_primary_range.take();
4249 if direction == Direction::Prev {
4250 if search_start == buffer.len() {
4251 break;
4252 } else {
4253 search_start = buffer.len();
4254 }
4255 } else {
4256 if search_start == 0 {
4257 break;
4258 } else {
4259 search_start = 0;
4260 }
4261 }
4262 }
4263 }
4264 }
4265
4266 pub fn go_to_definition(
4267 workspace: &mut Workspace,
4268 _: &GoToDefinition,
4269 cx: &mut ViewContext<Workspace>,
4270 ) {
4271 let active_item = workspace.active_item(cx);
4272 let editor_handle = if let Some(editor) = active_item
4273 .as_ref()
4274 .and_then(|item| item.act_as::<Self>(cx))
4275 {
4276 editor
4277 } else {
4278 return;
4279 };
4280
4281 let editor = editor_handle.read(cx);
4282 let head = editor.newest_selection::<usize>(cx).head();
4283 let (buffer, head) =
4284 if let Some(text_anchor) = editor.buffer.read(cx).text_anchor_for_position(head, cx) {
4285 text_anchor
4286 } else {
4287 return;
4288 };
4289
4290 let project = workspace.project().clone();
4291 let definitions = project.update(cx, |project, cx| project.definition(&buffer, head, cx));
4292 cx.spawn(|workspace, mut cx| async move {
4293 let definitions = definitions.await?;
4294 workspace.update(&mut cx, |workspace, cx| {
4295 let nav_history = workspace.active_pane().read(cx).nav_history().clone();
4296 for definition in definitions {
4297 let range = definition.range.to_offset(definition.buffer.read(cx));
4298
4299 let target_editor_handle = workspace.open_project_item(definition.buffer, cx);
4300 target_editor_handle.update(cx, |target_editor, cx| {
4301 // When selecting a definition in a different buffer, disable the nav history
4302 // to avoid creating a history entry at the previous cursor location.
4303 if editor_handle != target_editor_handle {
4304 nav_history.borrow_mut().disable();
4305 }
4306 target_editor.select_ranges([range], Some(Autoscroll::Center), cx);
4307 nav_history.borrow_mut().enable();
4308 });
4309 }
4310 });
4311
4312 Ok::<(), anyhow::Error>(())
4313 })
4314 .detach_and_log_err(cx);
4315 }
4316
4317 pub fn find_all_references(
4318 workspace: &mut Workspace,
4319 _: &FindAllReferences,
4320 cx: &mut ViewContext<Workspace>,
4321 ) -> Option<Task<Result<()>>> {
4322 let active_item = workspace.active_item(cx)?;
4323 let editor_handle = active_item.act_as::<Self>(cx)?;
4324
4325 let editor = editor_handle.read(cx);
4326 let head = editor.newest_selection::<usize>(cx).head();
4327 let (buffer, head) = editor.buffer.read(cx).text_anchor_for_position(head, cx)?;
4328 let replica_id = editor.replica_id(cx);
4329
4330 let project = workspace.project().clone();
4331 let references = project.update(cx, |project, cx| project.references(&buffer, head, cx));
4332 Some(cx.spawn(|workspace, mut cx| async move {
4333 let mut locations = references.await?;
4334 if locations.is_empty() {
4335 return Ok(());
4336 }
4337
4338 locations.sort_by_key(|location| location.buffer.id());
4339 let mut locations = locations.into_iter().peekable();
4340 let mut ranges_to_highlight = Vec::new();
4341
4342 let excerpt_buffer = cx.add_model(|cx| {
4343 let mut symbol_name = None;
4344 let mut multibuffer = MultiBuffer::new(replica_id);
4345 while let Some(location) = locations.next() {
4346 let buffer = location.buffer.read(cx);
4347 let mut ranges_for_buffer = Vec::new();
4348 let range = location.range.to_offset(buffer);
4349 ranges_for_buffer.push(range.clone());
4350 if symbol_name.is_none() {
4351 symbol_name = Some(buffer.text_for_range(range).collect::<String>());
4352 }
4353
4354 while let Some(next_location) = locations.peek() {
4355 if next_location.buffer == location.buffer {
4356 ranges_for_buffer.push(next_location.range.to_offset(buffer));
4357 locations.next();
4358 } else {
4359 break;
4360 }
4361 }
4362
4363 ranges_for_buffer.sort_by_key(|range| (range.start, Reverse(range.end)));
4364 ranges_to_highlight.extend(multibuffer.push_excerpts_with_context_lines(
4365 location.buffer.clone(),
4366 ranges_for_buffer,
4367 1,
4368 cx,
4369 ));
4370 }
4371 multibuffer.with_title(format!("References to `{}`", symbol_name.unwrap()))
4372 });
4373
4374 workspace.update(&mut cx, |workspace, cx| {
4375 let editor =
4376 cx.add_view(|cx| Editor::for_multibuffer(excerpt_buffer, Some(project), cx));
4377 editor.update(cx, |editor, cx| {
4378 let color = editor.style(cx).highlighted_line_background;
4379 editor.highlight_background::<Self>(ranges_to_highlight, color, cx);
4380 });
4381 workspace.add_item(Box::new(editor), cx);
4382 });
4383
4384 Ok(())
4385 }))
4386 }
4387
4388 pub fn rename(&mut self, _: &Rename, cx: &mut ViewContext<Self>) -> Option<Task<Result<()>>> {
4389 use language::ToOffset as _;
4390
4391 let project = self.project.clone()?;
4392 let selection = self.newest_anchor_selection().clone();
4393 let (cursor_buffer, cursor_buffer_position) = self
4394 .buffer
4395 .read(cx)
4396 .text_anchor_for_position(selection.head(), cx)?;
4397 let (tail_buffer, _) = self
4398 .buffer
4399 .read(cx)
4400 .text_anchor_for_position(selection.tail(), cx)?;
4401 if tail_buffer != cursor_buffer {
4402 return None;
4403 }
4404
4405 let snapshot = cursor_buffer.read(cx).snapshot();
4406 let cursor_buffer_offset = cursor_buffer_position.to_offset(&snapshot);
4407 let prepare_rename = project.update(cx, |project, cx| {
4408 project.prepare_rename(cursor_buffer, cursor_buffer_offset, cx)
4409 });
4410
4411 Some(cx.spawn(|this, mut cx| async move {
4412 if let Some(rename_range) = prepare_rename.await? {
4413 let rename_buffer_range = rename_range.to_offset(&snapshot);
4414 let cursor_offset_in_rename_range =
4415 cursor_buffer_offset.saturating_sub(rename_buffer_range.start);
4416
4417 this.update(&mut cx, |this, cx| {
4418 this.take_rename(false, cx);
4419 let style = this.style(cx);
4420 let buffer = this.buffer.read(cx).read(cx);
4421 let cursor_offset = selection.head().to_offset(&buffer);
4422 let rename_start = cursor_offset.saturating_sub(cursor_offset_in_rename_range);
4423 let rename_end = rename_start + rename_buffer_range.len();
4424 let range = buffer.anchor_before(rename_start)..buffer.anchor_after(rename_end);
4425 let mut old_highlight_id = None;
4426 let old_name = buffer
4427 .chunks(rename_start..rename_end, true)
4428 .map(|chunk| {
4429 if old_highlight_id.is_none() {
4430 old_highlight_id = chunk.syntax_highlight_id;
4431 }
4432 chunk.text
4433 })
4434 .collect();
4435
4436 drop(buffer);
4437
4438 // Position the selection in the rename editor so that it matches the current selection.
4439 this.show_local_selections = false;
4440 let rename_editor = cx.add_view(|cx| {
4441 let mut editor = Editor::single_line(None, cx);
4442 if let Some(old_highlight_id) = old_highlight_id {
4443 editor.override_text_style =
4444 Some(Box::new(move |style| old_highlight_id.style(&style.syntax)));
4445 }
4446 editor
4447 .buffer
4448 .update(cx, |buffer, cx| buffer.edit([0..0], &old_name, cx));
4449 editor.select_all(&SelectAll, cx);
4450 editor
4451 });
4452
4453 let ranges = this
4454 .clear_background_highlights::<DocumentHighlightWrite>(cx)
4455 .into_iter()
4456 .flat_map(|(_, ranges)| ranges)
4457 .chain(
4458 this.clear_background_highlights::<DocumentHighlightRead>(cx)
4459 .into_iter()
4460 .flat_map(|(_, ranges)| ranges),
4461 )
4462 .collect();
4463
4464 this.highlight_text::<Rename>(
4465 ranges,
4466 HighlightStyle {
4467 fade_out: Some(style.rename_fade),
4468 ..Default::default()
4469 },
4470 cx,
4471 );
4472 cx.focus(&rename_editor);
4473 let block_id = this.insert_blocks(
4474 [BlockProperties {
4475 position: range.start.clone(),
4476 height: 1,
4477 render: Arc::new({
4478 let editor = rename_editor.clone();
4479 move |cx: &BlockContext| {
4480 ChildView::new(editor.clone())
4481 .contained()
4482 .with_padding_left(cx.anchor_x)
4483 .boxed()
4484 }
4485 }),
4486 disposition: BlockDisposition::Below,
4487 }],
4488 cx,
4489 )[0];
4490 this.pending_rename = Some(RenameState {
4491 range,
4492 old_name,
4493 editor: rename_editor,
4494 block_id,
4495 });
4496 });
4497 }
4498
4499 Ok(())
4500 }))
4501 }
4502
4503 pub fn confirm_rename(
4504 workspace: &mut Workspace,
4505 _: &ConfirmRename,
4506 cx: &mut ViewContext<Workspace>,
4507 ) -> Option<Task<Result<()>>> {
4508 let editor = workspace.active_item(cx)?.act_as::<Editor>(cx)?;
4509
4510 let (buffer, range, old_name, new_name) = editor.update(cx, |editor, cx| {
4511 let rename = editor.take_rename(false, cx)?;
4512 let buffer = editor.buffer.read(cx);
4513 let (start_buffer, start) =
4514 buffer.text_anchor_for_position(rename.range.start.clone(), cx)?;
4515 let (end_buffer, end) =
4516 buffer.text_anchor_for_position(rename.range.end.clone(), cx)?;
4517 if start_buffer == end_buffer {
4518 let new_name = rename.editor.read(cx).text(cx);
4519 Some((start_buffer, start..end, rename.old_name, new_name))
4520 } else {
4521 None
4522 }
4523 })?;
4524
4525 let rename = workspace.project().clone().update(cx, |project, cx| {
4526 project.perform_rename(
4527 buffer.clone(),
4528 range.start.clone(),
4529 new_name.clone(),
4530 true,
4531 cx,
4532 )
4533 });
4534
4535 Some(cx.spawn(|workspace, mut cx| async move {
4536 let project_transaction = rename.await?;
4537 Self::open_project_transaction(
4538 editor.clone(),
4539 workspace,
4540 project_transaction,
4541 format!("Rename: {} → {}", old_name, new_name),
4542 cx.clone(),
4543 )
4544 .await?;
4545
4546 editor.update(&mut cx, |editor, cx| {
4547 editor.refresh_document_highlights(cx);
4548 });
4549 Ok(())
4550 }))
4551 }
4552
4553 fn take_rename(
4554 &mut self,
4555 moving_cursor: bool,
4556 cx: &mut ViewContext<Self>,
4557 ) -> Option<RenameState> {
4558 let rename = self.pending_rename.take()?;
4559 self.remove_blocks([rename.block_id].into_iter().collect(), cx);
4560 self.clear_text_highlights::<Rename>(cx);
4561 self.show_local_selections = true;
4562
4563 if moving_cursor {
4564 let cursor_in_rename_editor =
4565 rename.editor.read(cx).newest_selection::<usize>(cx).head();
4566
4567 // Update the selection to match the position of the selection inside
4568 // the rename editor.
4569 let snapshot = self.buffer.read(cx).read(cx);
4570 let rename_range = rename.range.to_offset(&snapshot);
4571 let cursor_in_editor = snapshot
4572 .clip_offset(rename_range.start + cursor_in_rename_editor, Bias::Left)
4573 .min(rename_range.end);
4574 drop(snapshot);
4575
4576 self.update_selections(
4577 vec![Selection {
4578 id: self.newest_anchor_selection().id,
4579 start: cursor_in_editor,
4580 end: cursor_in_editor,
4581 reversed: false,
4582 goal: SelectionGoal::None,
4583 }],
4584 None,
4585 cx,
4586 );
4587 }
4588
4589 Some(rename)
4590 }
4591
4592 fn invalidate_rename_range(
4593 &mut self,
4594 buffer: &MultiBufferSnapshot,
4595 cx: &mut ViewContext<Self>,
4596 ) {
4597 if let Some(rename) = self.pending_rename.as_ref() {
4598 if self.selections.len() == 1 {
4599 let head = self.selections[0].head().to_offset(buffer);
4600 let range = rename.range.to_offset(buffer).to_inclusive();
4601 if range.contains(&head) {
4602 return;
4603 }
4604 }
4605 let rename = self.pending_rename.take().unwrap();
4606 self.remove_blocks([rename.block_id].into_iter().collect(), cx);
4607 self.clear_background_highlights::<Rename>(cx);
4608 }
4609 }
4610
4611 #[cfg(any(test, feature = "test-support"))]
4612 pub fn pending_rename(&self) -> Option<&RenameState> {
4613 self.pending_rename.as_ref()
4614 }
4615
4616 fn refresh_active_diagnostics(&mut self, cx: &mut ViewContext<Editor>) {
4617 if let Some(active_diagnostics) = self.active_diagnostics.as_mut() {
4618 let buffer = self.buffer.read(cx).snapshot(cx);
4619 let primary_range_start = active_diagnostics.primary_range.start.to_offset(&buffer);
4620 let is_valid = buffer
4621 .diagnostics_in_range::<_, usize>(active_diagnostics.primary_range.clone(), false)
4622 .any(|entry| {
4623 entry.diagnostic.is_primary
4624 && !entry.range.is_empty()
4625 && entry.range.start == primary_range_start
4626 && entry.diagnostic.message == active_diagnostics.primary_message
4627 });
4628
4629 if is_valid != active_diagnostics.is_valid {
4630 active_diagnostics.is_valid = is_valid;
4631 let mut new_styles = HashMap::default();
4632 for (block_id, diagnostic) in &active_diagnostics.blocks {
4633 new_styles.insert(
4634 *block_id,
4635 diagnostic_block_renderer(diagnostic.clone(), is_valid),
4636 );
4637 }
4638 self.display_map
4639 .update(cx, |display_map, _| display_map.replace_blocks(new_styles));
4640 }
4641 }
4642 }
4643
4644 fn activate_diagnostics(&mut self, group_id: usize, cx: &mut ViewContext<Self>) {
4645 self.dismiss_diagnostics(cx);
4646 self.active_diagnostics = self.display_map.update(cx, |display_map, cx| {
4647 let buffer = self.buffer.read(cx).snapshot(cx);
4648
4649 let mut primary_range = None;
4650 let mut primary_message = None;
4651 let mut group_end = Point::zero();
4652 let diagnostic_group = buffer
4653 .diagnostic_group::<Point>(group_id)
4654 .map(|entry| {
4655 if entry.range.end > group_end {
4656 group_end = entry.range.end;
4657 }
4658 if entry.diagnostic.is_primary {
4659 primary_range = Some(entry.range.clone());
4660 primary_message = Some(entry.diagnostic.message.clone());
4661 }
4662 entry
4663 })
4664 .collect::<Vec<_>>();
4665 let primary_range = primary_range.unwrap();
4666 let primary_message = primary_message.unwrap();
4667 let primary_range =
4668 buffer.anchor_after(primary_range.start)..buffer.anchor_before(primary_range.end);
4669
4670 let blocks = display_map
4671 .insert_blocks(
4672 diagnostic_group.iter().map(|entry| {
4673 let diagnostic = entry.diagnostic.clone();
4674 let message_height = diagnostic.message.lines().count() as u8;
4675 BlockProperties {
4676 position: buffer.anchor_after(entry.range.start),
4677 height: message_height,
4678 render: diagnostic_block_renderer(diagnostic, true),
4679 disposition: BlockDisposition::Below,
4680 }
4681 }),
4682 cx,
4683 )
4684 .into_iter()
4685 .zip(diagnostic_group.into_iter().map(|entry| entry.diagnostic))
4686 .collect();
4687
4688 Some(ActiveDiagnosticGroup {
4689 primary_range,
4690 primary_message,
4691 blocks,
4692 is_valid: true,
4693 })
4694 });
4695 }
4696
4697 fn dismiss_diagnostics(&mut self, cx: &mut ViewContext<Self>) {
4698 if let Some(active_diagnostic_group) = self.active_diagnostics.take() {
4699 self.display_map.update(cx, |display_map, cx| {
4700 display_map.remove_blocks(active_diagnostic_group.blocks.into_keys().collect(), cx);
4701 });
4702 cx.notify();
4703 }
4704 }
4705
4706 fn build_columnar_selection(
4707 &mut self,
4708 display_map: &DisplaySnapshot,
4709 row: u32,
4710 columns: &Range<u32>,
4711 reversed: bool,
4712 ) -> Option<Selection<Point>> {
4713 let is_empty = columns.start == columns.end;
4714 let line_len = display_map.line_len(row);
4715 if columns.start < line_len || (is_empty && columns.start == line_len) {
4716 let start = DisplayPoint::new(row, columns.start);
4717 let end = DisplayPoint::new(row, cmp::min(columns.end, line_len));
4718 Some(Selection {
4719 id: post_inc(&mut self.next_selection_id),
4720 start: start.to_point(display_map),
4721 end: end.to_point(display_map),
4722 reversed,
4723 goal: SelectionGoal::ColumnRange {
4724 start: columns.start,
4725 end: columns.end,
4726 },
4727 })
4728 } else {
4729 None
4730 }
4731 }
4732
4733 pub fn local_selections_in_range(
4734 &self,
4735 range: Range<Anchor>,
4736 display_map: &DisplaySnapshot,
4737 ) -> Vec<Selection<Point>> {
4738 let buffer = &display_map.buffer_snapshot;
4739
4740 let start_ix = match self
4741 .selections
4742 .binary_search_by(|probe| probe.end.cmp(&range.start, &buffer))
4743 {
4744 Ok(ix) | Err(ix) => ix,
4745 };
4746 let end_ix = match self
4747 .selections
4748 .binary_search_by(|probe| probe.start.cmp(&range.end, &buffer))
4749 {
4750 Ok(ix) => ix + 1,
4751 Err(ix) => ix,
4752 };
4753
4754 fn point_selection(
4755 selection: &Selection<Anchor>,
4756 buffer: &MultiBufferSnapshot,
4757 ) -> Selection<Point> {
4758 let start = selection.start.to_point(&buffer);
4759 let end = selection.end.to_point(&buffer);
4760 Selection {
4761 id: selection.id,
4762 start,
4763 end,
4764 reversed: selection.reversed,
4765 goal: selection.goal,
4766 }
4767 }
4768
4769 self.selections[start_ix..end_ix]
4770 .iter()
4771 .chain(
4772 self.pending_selection
4773 .as_ref()
4774 .map(|pending| &pending.selection),
4775 )
4776 .map(|s| point_selection(s, &buffer))
4777 .collect()
4778 }
4779
4780 pub fn local_selections<'a, D>(&self, cx: &'a AppContext) -> Vec<Selection<D>>
4781 where
4782 D: 'a + TextDimension + Ord + Sub<D, Output = D>,
4783 {
4784 let buffer = self.buffer.read(cx).snapshot(cx);
4785 let mut selections = self
4786 .resolve_selections::<D, _>(self.selections.iter(), &buffer)
4787 .peekable();
4788
4789 let mut pending_selection = self.pending_selection::<D>(&buffer);
4790
4791 iter::from_fn(move || {
4792 if let Some(pending) = pending_selection.as_mut() {
4793 while let Some(next_selection) = selections.peek() {
4794 if pending.start <= next_selection.end && pending.end >= next_selection.start {
4795 let next_selection = selections.next().unwrap();
4796 if next_selection.start < pending.start {
4797 pending.start = next_selection.start;
4798 }
4799 if next_selection.end > pending.end {
4800 pending.end = next_selection.end;
4801 }
4802 } else if next_selection.end < pending.start {
4803 return selections.next();
4804 } else {
4805 break;
4806 }
4807 }
4808
4809 pending_selection.take()
4810 } else {
4811 selections.next()
4812 }
4813 })
4814 .collect()
4815 }
4816
4817 fn resolve_selections<'a, D, I>(
4818 &self,
4819 selections: I,
4820 snapshot: &MultiBufferSnapshot,
4821 ) -> impl 'a + Iterator<Item = Selection<D>>
4822 where
4823 D: TextDimension + Ord + Sub<D, Output = D>,
4824 I: 'a + IntoIterator<Item = &'a Selection<Anchor>>,
4825 {
4826 let (to_summarize, selections) = selections.into_iter().tee();
4827 let mut summaries = snapshot
4828 .summaries_for_anchors::<D, _>(to_summarize.flat_map(|s| [&s.start, &s.end]))
4829 .into_iter();
4830 selections.map(move |s| Selection {
4831 id: s.id,
4832 start: summaries.next().unwrap(),
4833 end: summaries.next().unwrap(),
4834 reversed: s.reversed,
4835 goal: s.goal,
4836 })
4837 }
4838
4839 fn pending_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
4840 &self,
4841 snapshot: &MultiBufferSnapshot,
4842 ) -> Option<Selection<D>> {
4843 self.pending_selection
4844 .as_ref()
4845 .map(|pending| self.resolve_selection(&pending.selection, &snapshot))
4846 }
4847
4848 fn resolve_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
4849 &self,
4850 selection: &Selection<Anchor>,
4851 buffer: &MultiBufferSnapshot,
4852 ) -> Selection<D> {
4853 Selection {
4854 id: selection.id,
4855 start: selection.start.summary::<D>(&buffer),
4856 end: selection.end.summary::<D>(&buffer),
4857 reversed: selection.reversed,
4858 goal: selection.goal,
4859 }
4860 }
4861
4862 fn selection_count<'a>(&self) -> usize {
4863 let mut count = self.selections.len();
4864 if self.pending_selection.is_some() {
4865 count += 1;
4866 }
4867 count
4868 }
4869
4870 pub fn oldest_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
4871 &self,
4872 cx: &AppContext,
4873 ) -> Selection<D> {
4874 let snapshot = self.buffer.read(cx).read(cx);
4875 self.selections
4876 .iter()
4877 .min_by_key(|s| s.id)
4878 .map(|selection| self.resolve_selection(selection, &snapshot))
4879 .or_else(|| self.pending_selection(&snapshot))
4880 .unwrap()
4881 }
4882
4883 pub fn newest_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
4884 &self,
4885 cx: &AppContext,
4886 ) -> Selection<D> {
4887 self.resolve_selection(
4888 self.newest_anchor_selection(),
4889 &self.buffer.read(cx).read(cx),
4890 )
4891 }
4892
4893 pub fn newest_selection_with_snapshot<D: TextDimension + Ord + Sub<D, Output = D>>(
4894 &self,
4895 snapshot: &MultiBufferSnapshot,
4896 ) -> Selection<D> {
4897 self.resolve_selection(self.newest_anchor_selection(), snapshot)
4898 }
4899
4900 pub fn newest_anchor_selection(&self) -> &Selection<Anchor> {
4901 self.pending_selection
4902 .as_ref()
4903 .map(|s| &s.selection)
4904 .or_else(|| self.selections.iter().max_by_key(|s| s.id))
4905 .unwrap()
4906 }
4907
4908 pub fn update_selections<T>(
4909 &mut self,
4910 mut selections: Vec<Selection<T>>,
4911 autoscroll: Option<Autoscroll>,
4912 cx: &mut ViewContext<Self>,
4913 ) where
4914 T: ToOffset + ToPoint + Ord + std::marker::Copy + std::fmt::Debug,
4915 {
4916 let buffer = self.buffer.read(cx).snapshot(cx);
4917 selections.sort_unstable_by_key(|s| s.start);
4918
4919 // Merge overlapping selections.
4920 let mut i = 1;
4921 while i < selections.len() {
4922 if selections[i - 1].end >= selections[i].start {
4923 let removed = selections.remove(i);
4924 if removed.start < selections[i - 1].start {
4925 selections[i - 1].start = removed.start;
4926 }
4927 if removed.end > selections[i - 1].end {
4928 selections[i - 1].end = removed.end;
4929 }
4930 } else {
4931 i += 1;
4932 }
4933 }
4934
4935 if let Some(autoscroll) = autoscroll {
4936 self.request_autoscroll(autoscroll, cx);
4937 }
4938
4939 self.set_selections(
4940 Arc::from_iter(selections.into_iter().map(|selection| {
4941 let end_bias = if selection.end > selection.start {
4942 Bias::Left
4943 } else {
4944 Bias::Right
4945 };
4946 Selection {
4947 id: selection.id,
4948 start: buffer.anchor_after(selection.start),
4949 end: buffer.anchor_at(selection.end, end_bias),
4950 reversed: selection.reversed,
4951 goal: selection.goal,
4952 }
4953 })),
4954 None,
4955 true,
4956 cx,
4957 );
4958 }
4959
4960 pub fn set_selections_from_remote(
4961 &mut self,
4962 mut selections: Vec<Selection<Anchor>>,
4963 cx: &mut ViewContext<Self>,
4964 ) {
4965 let buffer = self.buffer.read(cx);
4966 let buffer = buffer.read(cx);
4967 selections.sort_by(|a, b| {
4968 a.start
4969 .cmp(&b.start, &*buffer)
4970 .then_with(|| b.end.cmp(&a.end, &*buffer))
4971 });
4972
4973 // Merge overlapping selections
4974 let mut i = 1;
4975 while i < selections.len() {
4976 if selections[i - 1]
4977 .end
4978 .cmp(&selections[i].start, &*buffer)
4979 .is_ge()
4980 {
4981 let removed = selections.remove(i);
4982 if removed
4983 .start
4984 .cmp(&selections[i - 1].start, &*buffer)
4985 .is_lt()
4986 {
4987 selections[i - 1].start = removed.start;
4988 }
4989 if removed.end.cmp(&selections[i - 1].end, &*buffer).is_gt() {
4990 selections[i - 1].end = removed.end;
4991 }
4992 } else {
4993 i += 1;
4994 }
4995 }
4996
4997 drop(buffer);
4998 self.set_selections(selections.into(), None, false, cx);
4999 }
5000
5001 /// Compute new ranges for any selections that were located in excerpts that have
5002 /// since been removed.
5003 ///
5004 /// Returns a `HashMap` indicating which selections whose former head position
5005 /// was no longer present. The keys of the map are selection ids. The values are
5006 /// the id of the new excerpt where the head of the selection has been moved.
5007 pub fn refresh_selections(&mut self, cx: &mut ViewContext<Self>) -> HashMap<usize, ExcerptId> {
5008 let snapshot = self.buffer.read(cx).read(cx);
5009 let mut selections_with_lost_position = HashMap::default();
5010
5011 let mut pending_selection = self.pending_selection.take();
5012 if let Some(pending) = pending_selection.as_mut() {
5013 let anchors =
5014 snapshot.refresh_anchors([&pending.selection.start, &pending.selection.end]);
5015 let (_, start, kept_start) = anchors[0].clone();
5016 let (_, end, kept_end) = anchors[1].clone();
5017 let kept_head = if pending.selection.reversed {
5018 kept_start
5019 } else {
5020 kept_end
5021 };
5022 if !kept_head {
5023 selections_with_lost_position.insert(
5024 pending.selection.id,
5025 pending.selection.head().excerpt_id.clone(),
5026 );
5027 }
5028
5029 pending.selection.start = start;
5030 pending.selection.end = end;
5031 }
5032
5033 let anchors_with_status = snapshot.refresh_anchors(
5034 self.selections
5035 .iter()
5036 .flat_map(|selection| [&selection.start, &selection.end]),
5037 );
5038 self.selections = anchors_with_status
5039 .chunks(2)
5040 .map(|selection_anchors| {
5041 let (anchor_ix, start, kept_start) = selection_anchors[0].clone();
5042 let (_, end, kept_end) = selection_anchors[1].clone();
5043 let selection = &self.selections[anchor_ix / 2];
5044 let kept_head = if selection.reversed {
5045 kept_start
5046 } else {
5047 kept_end
5048 };
5049 if !kept_head {
5050 selections_with_lost_position
5051 .insert(selection.id, selection.head().excerpt_id.clone());
5052 }
5053
5054 Selection {
5055 id: selection.id,
5056 start,
5057 end,
5058 reversed: selection.reversed,
5059 goal: selection.goal,
5060 }
5061 })
5062 .collect();
5063 drop(snapshot);
5064
5065 let new_selections = self.local_selections::<usize>(cx);
5066 if !new_selections.is_empty() {
5067 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
5068 }
5069 self.pending_selection = pending_selection;
5070
5071 selections_with_lost_position
5072 }
5073
5074 fn set_selections(
5075 &mut self,
5076 selections: Arc<[Selection<Anchor>]>,
5077 pending_selection: Option<PendingSelection>,
5078 local: bool,
5079 cx: &mut ViewContext<Self>,
5080 ) {
5081 assert!(
5082 !selections.is_empty() || pending_selection.is_some(),
5083 "must have at least one selection"
5084 );
5085
5086 let old_cursor_position = self.newest_anchor_selection().head();
5087
5088 self.selections = selections;
5089 self.pending_selection = pending_selection;
5090 if self.focused && self.leader_replica_id.is_none() {
5091 self.buffer.update(cx, |buffer, cx| {
5092 buffer.set_active_selections(&self.selections, cx)
5093 });
5094 }
5095
5096 let display_map = self
5097 .display_map
5098 .update(cx, |display_map, cx| display_map.snapshot(cx));
5099 let buffer = &display_map.buffer_snapshot;
5100 self.add_selections_state = None;
5101 self.select_next_state = None;
5102 self.select_larger_syntax_node_stack.clear();
5103 self.autoclose_stack.invalidate(&self.selections, &buffer);
5104 self.snippet_stack.invalidate(&self.selections, &buffer);
5105 self.invalidate_rename_range(&buffer, cx);
5106
5107 let new_cursor_position = self.newest_anchor_selection().head();
5108
5109 self.push_to_nav_history(
5110 old_cursor_position.clone(),
5111 Some(new_cursor_position.to_point(&buffer)),
5112 cx,
5113 );
5114
5115 if local {
5116 let completion_menu = match self.context_menu.as_mut() {
5117 Some(ContextMenu::Completions(menu)) => Some(menu),
5118 _ => {
5119 self.context_menu.take();
5120 None
5121 }
5122 };
5123
5124 if let Some(completion_menu) = completion_menu {
5125 let cursor_position = new_cursor_position.to_offset(&buffer);
5126 let (word_range, kind) =
5127 buffer.surrounding_word(completion_menu.initial_position.clone());
5128 if kind == Some(CharKind::Word)
5129 && word_range.to_inclusive().contains(&cursor_position)
5130 {
5131 let query = Self::completion_query(&buffer, cursor_position);
5132 cx.background()
5133 .block(completion_menu.filter(query.as_deref(), cx.background().clone()));
5134 self.show_completions(&ShowCompletions, cx);
5135 } else {
5136 self.hide_context_menu(cx);
5137 }
5138 }
5139
5140 if old_cursor_position.to_display_point(&display_map).row()
5141 != new_cursor_position.to_display_point(&display_map).row()
5142 {
5143 self.available_code_actions.take();
5144 }
5145 self.refresh_code_actions(cx);
5146 self.refresh_document_highlights(cx);
5147 }
5148
5149 self.pause_cursor_blinking(cx);
5150 cx.emit(Event::SelectionsChanged { local });
5151 }
5152
5153 pub fn request_autoscroll(&mut self, autoscroll: Autoscroll, cx: &mut ViewContext<Self>) {
5154 self.autoscroll_request = Some((autoscroll, true));
5155 cx.notify();
5156 }
5157
5158 fn request_autoscroll_remotely(&mut self, autoscroll: Autoscroll, cx: &mut ViewContext<Self>) {
5159 self.autoscroll_request = Some((autoscroll, false));
5160 cx.notify();
5161 }
5162
5163 pub fn transact(
5164 &mut self,
5165 cx: &mut ViewContext<Self>,
5166 update: impl FnOnce(&mut Self, &mut ViewContext<Self>),
5167 ) {
5168 self.start_transaction_at(Instant::now(), cx);
5169 update(self, cx);
5170 self.end_transaction_at(Instant::now(), cx);
5171 }
5172
5173 fn start_transaction_at(&mut self, now: Instant, cx: &mut ViewContext<Self>) {
5174 self.end_selection(cx);
5175 if let Some(tx_id) = self
5176 .buffer
5177 .update(cx, |buffer, cx| buffer.start_transaction_at(now, cx))
5178 {
5179 self.selection_history
5180 .insert(tx_id, (self.selections.clone(), None));
5181 }
5182 }
5183
5184 fn end_transaction_at(&mut self, now: Instant, cx: &mut ViewContext<Self>) {
5185 if let Some(tx_id) = self
5186 .buffer
5187 .update(cx, |buffer, cx| buffer.end_transaction_at(now, cx))
5188 {
5189 if let Some((_, end_selections)) = self.selection_history.get_mut(&tx_id) {
5190 *end_selections = Some(self.selections.clone());
5191 } else {
5192 log::error!("unexpectedly ended a transaction that wasn't started by this editor");
5193 }
5194
5195 cx.emit(Event::Edited);
5196 }
5197 }
5198
5199 pub fn page_up(&mut self, _: &PageUp, _: &mut ViewContext<Self>) {
5200 log::info!("Editor::page_up");
5201 }
5202
5203 pub fn page_down(&mut self, _: &PageDown, _: &mut ViewContext<Self>) {
5204 log::info!("Editor::page_down");
5205 }
5206
5207 pub fn fold(&mut self, _: &Fold, cx: &mut ViewContext<Self>) {
5208 let mut fold_ranges = Vec::new();
5209
5210 let selections = self.local_selections::<Point>(cx);
5211 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
5212 for selection in selections {
5213 let range = selection.display_range(&display_map).sorted();
5214 let buffer_start_row = range.start.to_point(&display_map).row;
5215
5216 for row in (0..=range.end.row()).rev() {
5217 if self.is_line_foldable(&display_map, row) && !display_map.is_line_folded(row) {
5218 let fold_range = self.foldable_range_for_line(&display_map, row);
5219 if fold_range.end.row >= buffer_start_row {
5220 fold_ranges.push(fold_range);
5221 if row <= range.start.row() {
5222 break;
5223 }
5224 }
5225 }
5226 }
5227 }
5228
5229 self.fold_ranges(fold_ranges, cx);
5230 }
5231
5232 pub fn unfold_lines(&mut self, _: &UnfoldLines, cx: &mut ViewContext<Self>) {
5233 let selections = self.local_selections::<Point>(cx);
5234 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
5235 let buffer = &display_map.buffer_snapshot;
5236 let ranges = selections
5237 .iter()
5238 .map(|s| {
5239 let range = s.display_range(&display_map).sorted();
5240 let mut start = range.start.to_point(&display_map);
5241 let mut end = range.end.to_point(&display_map);
5242 start.column = 0;
5243 end.column = buffer.line_len(end.row);
5244 start..end
5245 })
5246 .collect::<Vec<_>>();
5247 self.unfold_ranges(ranges, true, cx);
5248 }
5249
5250 fn is_line_foldable(&self, display_map: &DisplaySnapshot, display_row: u32) -> bool {
5251 let max_point = display_map.max_point();
5252 if display_row >= max_point.row() {
5253 false
5254 } else {
5255 let (start_indent, is_blank) = display_map.line_indent(display_row);
5256 if is_blank {
5257 false
5258 } else {
5259 for display_row in display_row + 1..=max_point.row() {
5260 let (indent, is_blank) = display_map.line_indent(display_row);
5261 if !is_blank {
5262 return indent > start_indent;
5263 }
5264 }
5265 false
5266 }
5267 }
5268 }
5269
5270 fn foldable_range_for_line(
5271 &self,
5272 display_map: &DisplaySnapshot,
5273 start_row: u32,
5274 ) -> Range<Point> {
5275 let max_point = display_map.max_point();
5276
5277 let (start_indent, _) = display_map.line_indent(start_row);
5278 let start = DisplayPoint::new(start_row, display_map.line_len(start_row));
5279 let mut end = None;
5280 for row in start_row + 1..=max_point.row() {
5281 let (indent, is_blank) = display_map.line_indent(row);
5282 if !is_blank && indent <= start_indent {
5283 end = Some(DisplayPoint::new(row - 1, display_map.line_len(row - 1)));
5284 break;
5285 }
5286 }
5287
5288 let end = end.unwrap_or(max_point);
5289 return start.to_point(display_map)..end.to_point(display_map);
5290 }
5291
5292 pub fn fold_selected_ranges(&mut self, _: &FoldSelectedRanges, cx: &mut ViewContext<Self>) {
5293 let selections = self.local_selections::<Point>(cx);
5294 let ranges = selections.into_iter().map(|s| s.start..s.end);
5295 self.fold_ranges(ranges, cx);
5296 }
5297
5298 pub fn fold_ranges<T: ToOffset>(
5299 &mut self,
5300 ranges: impl IntoIterator<Item = Range<T>>,
5301 cx: &mut ViewContext<Self>,
5302 ) {
5303 let mut ranges = ranges.into_iter().peekable();
5304 if ranges.peek().is_some() {
5305 self.display_map.update(cx, |map, cx| map.fold(ranges, cx));
5306 self.request_autoscroll(Autoscroll::Fit, cx);
5307 cx.notify();
5308 }
5309 }
5310
5311 pub fn unfold_ranges<T: ToOffset>(
5312 &mut self,
5313 ranges: impl IntoIterator<Item = Range<T>>,
5314 inclusive: bool,
5315 cx: &mut ViewContext<Self>,
5316 ) {
5317 let mut ranges = ranges.into_iter().peekable();
5318 if ranges.peek().is_some() {
5319 self.display_map
5320 .update(cx, |map, cx| map.unfold(ranges, inclusive, cx));
5321 self.request_autoscroll(Autoscroll::Fit, cx);
5322 cx.notify();
5323 }
5324 }
5325
5326 pub fn insert_blocks(
5327 &mut self,
5328 blocks: impl IntoIterator<Item = BlockProperties<Anchor>>,
5329 cx: &mut ViewContext<Self>,
5330 ) -> Vec<BlockId> {
5331 let blocks = self
5332 .display_map
5333 .update(cx, |display_map, cx| display_map.insert_blocks(blocks, cx));
5334 self.request_autoscroll(Autoscroll::Fit, cx);
5335 blocks
5336 }
5337
5338 pub fn replace_blocks(
5339 &mut self,
5340 blocks: HashMap<BlockId, RenderBlock>,
5341 cx: &mut ViewContext<Self>,
5342 ) {
5343 self.display_map
5344 .update(cx, |display_map, _| display_map.replace_blocks(blocks));
5345 self.request_autoscroll(Autoscroll::Fit, cx);
5346 }
5347
5348 pub fn remove_blocks(&mut self, block_ids: HashSet<BlockId>, cx: &mut ViewContext<Self>) {
5349 self.display_map.update(cx, |display_map, cx| {
5350 display_map.remove_blocks(block_ids, cx)
5351 });
5352 }
5353
5354 pub fn longest_row(&self, cx: &mut MutableAppContext) -> u32 {
5355 self.display_map
5356 .update(cx, |map, cx| map.snapshot(cx))
5357 .longest_row()
5358 }
5359
5360 pub fn max_point(&self, cx: &mut MutableAppContext) -> DisplayPoint {
5361 self.display_map
5362 .update(cx, |map, cx| map.snapshot(cx))
5363 .max_point()
5364 }
5365
5366 pub fn text(&self, cx: &AppContext) -> String {
5367 self.buffer.read(cx).read(cx).text()
5368 }
5369
5370 pub fn set_text(&mut self, text: impl Into<String>, cx: &mut ViewContext<Self>) {
5371 self.transact(cx, |this, cx| {
5372 this.buffer
5373 .read(cx)
5374 .as_singleton()
5375 .expect("you can only call set_text on editors for singleton buffers")
5376 .update(cx, |buffer, cx| buffer.set_text(text, cx));
5377 });
5378 }
5379
5380 pub fn display_text(&self, cx: &mut MutableAppContext) -> String {
5381 self.display_map
5382 .update(cx, |map, cx| map.snapshot(cx))
5383 .text()
5384 }
5385
5386 pub fn soft_wrap_mode(&self, cx: &AppContext) -> SoftWrap {
5387 let language = self.language(cx);
5388 let settings = cx.global::<Settings>();
5389 let mode = self
5390 .soft_wrap_mode_override
5391 .unwrap_or_else(|| settings.soft_wrap(language));
5392 match mode {
5393 settings::SoftWrap::None => SoftWrap::None,
5394 settings::SoftWrap::EditorWidth => SoftWrap::EditorWidth,
5395 settings::SoftWrap::PreferredLineLength => {
5396 SoftWrap::Column(settings.preferred_line_length(language))
5397 }
5398 }
5399 }
5400
5401 pub fn set_soft_wrap_mode(&mut self, mode: settings::SoftWrap, cx: &mut ViewContext<Self>) {
5402 self.soft_wrap_mode_override = Some(mode);
5403 cx.notify();
5404 }
5405
5406 pub fn set_wrap_width(&self, width: Option<f32>, cx: &mut MutableAppContext) -> bool {
5407 self.display_map
5408 .update(cx, |map, cx| map.set_wrap_width(width, cx))
5409 }
5410
5411 pub fn highlight_rows(&mut self, rows: Option<Range<u32>>) {
5412 self.highlighted_rows = rows;
5413 }
5414
5415 pub fn highlighted_rows(&self) -> Option<Range<u32>> {
5416 self.highlighted_rows.clone()
5417 }
5418
5419 pub fn highlight_background<T: 'static>(
5420 &mut self,
5421 ranges: Vec<Range<Anchor>>,
5422 color: Color,
5423 cx: &mut ViewContext<Self>,
5424 ) {
5425 self.background_highlights
5426 .insert(TypeId::of::<T>(), (color, ranges));
5427 cx.notify();
5428 }
5429
5430 pub fn clear_background_highlights<T: 'static>(
5431 &mut self,
5432 cx: &mut ViewContext<Self>,
5433 ) -> Option<(Color, Vec<Range<Anchor>>)> {
5434 cx.notify();
5435 self.background_highlights.remove(&TypeId::of::<T>())
5436 }
5437
5438 #[cfg(feature = "test-support")]
5439 pub fn all_background_highlights(
5440 &mut self,
5441 cx: &mut ViewContext<Self>,
5442 ) -> Vec<(Range<DisplayPoint>, Color)> {
5443 let snapshot = self.snapshot(cx);
5444 let buffer = &snapshot.buffer_snapshot;
5445 let start = buffer.anchor_before(0);
5446 let end = buffer.anchor_after(buffer.len());
5447 self.background_highlights_in_range(start..end, &snapshot)
5448 }
5449
5450 pub fn background_highlights_for_type<T: 'static>(&self) -> Option<(Color, &[Range<Anchor>])> {
5451 self.background_highlights
5452 .get(&TypeId::of::<T>())
5453 .map(|(color, ranges)| (*color, ranges.as_slice()))
5454 }
5455
5456 pub fn background_highlights_in_range(
5457 &self,
5458 search_range: Range<Anchor>,
5459 display_snapshot: &DisplaySnapshot,
5460 ) -> Vec<(Range<DisplayPoint>, Color)> {
5461 let mut results = Vec::new();
5462 let buffer = &display_snapshot.buffer_snapshot;
5463 for (color, ranges) in self.background_highlights.values() {
5464 let start_ix = match ranges.binary_search_by(|probe| {
5465 let cmp = probe.end.cmp(&search_range.start, &buffer);
5466 if cmp.is_gt() {
5467 Ordering::Greater
5468 } else {
5469 Ordering::Less
5470 }
5471 }) {
5472 Ok(i) | Err(i) => i,
5473 };
5474 for range in &ranges[start_ix..] {
5475 if range.start.cmp(&search_range.end, &buffer).is_ge() {
5476 break;
5477 }
5478 let start = range
5479 .start
5480 .to_point(buffer)
5481 .to_display_point(display_snapshot);
5482 let end = range
5483 .end
5484 .to_point(buffer)
5485 .to_display_point(display_snapshot);
5486 results.push((start..end, *color))
5487 }
5488 }
5489 results
5490 }
5491
5492 pub fn highlight_text<T: 'static>(
5493 &mut self,
5494 ranges: Vec<Range<Anchor>>,
5495 style: HighlightStyle,
5496 cx: &mut ViewContext<Self>,
5497 ) {
5498 self.display_map.update(cx, |map, _| {
5499 map.highlight_text(TypeId::of::<T>(), ranges, style)
5500 });
5501 cx.notify();
5502 }
5503
5504 pub fn clear_text_highlights<T: 'static>(
5505 &mut self,
5506 cx: &mut ViewContext<Self>,
5507 ) -> Option<Arc<(HighlightStyle, Vec<Range<Anchor>>)>> {
5508 cx.notify();
5509 self.display_map
5510 .update(cx, |map, _| map.clear_text_highlights(TypeId::of::<T>()))
5511 }
5512
5513 fn next_blink_epoch(&mut self) -> usize {
5514 self.blink_epoch += 1;
5515 self.blink_epoch
5516 }
5517
5518 fn pause_cursor_blinking(&mut self, cx: &mut ViewContext<Self>) {
5519 if !self.focused {
5520 return;
5521 }
5522
5523 self.show_local_cursors = true;
5524 cx.notify();
5525
5526 let epoch = self.next_blink_epoch();
5527 cx.spawn(|this, mut cx| {
5528 let this = this.downgrade();
5529 async move {
5530 Timer::after(CURSOR_BLINK_INTERVAL).await;
5531 if let Some(this) = this.upgrade(&cx) {
5532 this.update(&mut cx, |this, cx| this.resume_cursor_blinking(epoch, cx))
5533 }
5534 }
5535 })
5536 .detach();
5537 }
5538
5539 fn resume_cursor_blinking(&mut self, epoch: usize, cx: &mut ViewContext<Self>) {
5540 if epoch == self.blink_epoch {
5541 self.blinking_paused = false;
5542 self.blink_cursors(epoch, cx);
5543 }
5544 }
5545
5546 fn blink_cursors(&mut self, epoch: usize, cx: &mut ViewContext<Self>) {
5547 if epoch == self.blink_epoch && self.focused && !self.blinking_paused {
5548 self.show_local_cursors = !self.show_local_cursors;
5549 cx.notify();
5550
5551 let epoch = self.next_blink_epoch();
5552 cx.spawn(|this, mut cx| {
5553 let this = this.downgrade();
5554 async move {
5555 Timer::after(CURSOR_BLINK_INTERVAL).await;
5556 if let Some(this) = this.upgrade(&cx) {
5557 this.update(&mut cx, |this, cx| this.blink_cursors(epoch, cx));
5558 }
5559 }
5560 })
5561 .detach();
5562 }
5563 }
5564
5565 pub fn show_local_cursors(&self) -> bool {
5566 self.show_local_cursors && self.focused
5567 }
5568
5569 fn on_buffer_changed(&mut self, _: ModelHandle<MultiBuffer>, cx: &mut ViewContext<Self>) {
5570 cx.notify();
5571 }
5572
5573 fn on_buffer_event(
5574 &mut self,
5575 _: ModelHandle<MultiBuffer>,
5576 event: &language::Event,
5577 cx: &mut ViewContext<Self>,
5578 ) {
5579 match event {
5580 language::Event::Edited => {
5581 self.refresh_active_diagnostics(cx);
5582 self.refresh_code_actions(cx);
5583 cx.emit(Event::BufferEdited);
5584 }
5585 language::Event::Dirtied => cx.emit(Event::Dirtied),
5586 language::Event::Saved => cx.emit(Event::Saved),
5587 language::Event::FileHandleChanged => cx.emit(Event::TitleChanged),
5588 language::Event::Reloaded => cx.emit(Event::TitleChanged),
5589 language::Event::Closed => cx.emit(Event::Closed),
5590 language::Event::DiagnosticsUpdated => {
5591 self.refresh_active_diagnostics(cx);
5592 }
5593 _ => {}
5594 }
5595 }
5596
5597 fn on_display_map_changed(&mut self, _: ModelHandle<DisplayMap>, cx: &mut ViewContext<Self>) {
5598 cx.notify();
5599 }
5600
5601 pub fn set_searchable(&mut self, searchable: bool) {
5602 self.searchable = searchable;
5603 }
5604
5605 pub fn searchable(&self) -> bool {
5606 self.searchable
5607 }
5608
5609 fn open_excerpts(workspace: &mut Workspace, _: &OpenExcerpts, cx: &mut ViewContext<Workspace>) {
5610 let active_item = workspace.active_item(cx);
5611 let editor_handle = if let Some(editor) = active_item
5612 .as_ref()
5613 .and_then(|item| item.act_as::<Self>(cx))
5614 {
5615 editor
5616 } else {
5617 cx.propagate_action();
5618 return;
5619 };
5620
5621 let editor = editor_handle.read(cx);
5622 let buffer = editor.buffer.read(cx);
5623 if buffer.is_singleton() {
5624 cx.propagate_action();
5625 return;
5626 }
5627
5628 let mut new_selections_by_buffer = HashMap::default();
5629 for selection in editor.local_selections::<usize>(cx) {
5630 for (buffer, mut range) in
5631 buffer.range_to_buffer_ranges(selection.start..selection.end, cx)
5632 {
5633 if selection.reversed {
5634 mem::swap(&mut range.start, &mut range.end);
5635 }
5636 new_selections_by_buffer
5637 .entry(buffer)
5638 .or_insert(Vec::new())
5639 .push(range)
5640 }
5641 }
5642
5643 editor_handle.update(cx, |editor, cx| {
5644 editor.push_to_nav_history(editor.newest_anchor_selection().head(), None, cx);
5645 });
5646 let nav_history = workspace.active_pane().read(cx).nav_history().clone();
5647 nav_history.borrow_mut().disable();
5648
5649 // We defer the pane interaction because we ourselves are a workspace item
5650 // and activating a new item causes the pane to call a method on us reentrantly,
5651 // which panics if we're on the stack.
5652 cx.defer(move |workspace, cx| {
5653 workspace.activate_next_pane(cx);
5654
5655 for (buffer, ranges) in new_selections_by_buffer.into_iter() {
5656 let editor = workspace.open_project_item::<Self>(buffer, cx);
5657 editor.update(cx, |editor, cx| {
5658 editor.select_ranges(ranges, Some(Autoscroll::Newest), cx);
5659 });
5660 }
5661
5662 nav_history.borrow_mut().enable();
5663 });
5664 }
5665}
5666
5667impl EditorSnapshot {
5668 pub fn is_focused(&self) -> bool {
5669 self.is_focused
5670 }
5671
5672 pub fn placeholder_text(&self) -> Option<&Arc<str>> {
5673 self.placeholder_text.as_ref()
5674 }
5675
5676 pub fn scroll_position(&self) -> Vector2F {
5677 compute_scroll_position(
5678 &self.display_snapshot,
5679 self.scroll_position,
5680 &self.scroll_top_anchor,
5681 )
5682 }
5683}
5684
5685impl Deref for EditorSnapshot {
5686 type Target = DisplaySnapshot;
5687
5688 fn deref(&self) -> &Self::Target {
5689 &self.display_snapshot
5690 }
5691}
5692
5693fn compute_scroll_position(
5694 snapshot: &DisplaySnapshot,
5695 mut scroll_position: Vector2F,
5696 scroll_top_anchor: &Anchor,
5697) -> Vector2F {
5698 if *scroll_top_anchor != Anchor::min() {
5699 let scroll_top = scroll_top_anchor.to_display_point(snapshot).row() as f32;
5700 scroll_position.set_y(scroll_top + scroll_position.y());
5701 } else {
5702 scroll_position.set_y(0.);
5703 }
5704 scroll_position
5705}
5706
5707#[derive(Copy, Clone, Debug, PartialEq, Eq)]
5708pub enum Event {
5709 Activate,
5710 BufferEdited,
5711 Edited,
5712 Blurred,
5713 Dirtied,
5714 Saved,
5715 TitleChanged,
5716 SelectionsChanged { local: bool },
5717 ScrollPositionChanged { local: bool },
5718 Closed,
5719}
5720
5721pub struct EditorFocused(pub ViewHandle<Editor>);
5722pub struct EditorBlurred(pub ViewHandle<Editor>);
5723pub struct EditorReleased(pub WeakViewHandle<Editor>);
5724
5725impl Entity for Editor {
5726 type Event = Event;
5727
5728 fn release(&mut self, cx: &mut MutableAppContext) {
5729 cx.emit_global(EditorReleased(self.handle.clone()));
5730 }
5731}
5732
5733impl View for Editor {
5734 fn render(&mut self, cx: &mut RenderContext<Self>) -> ElementBox {
5735 let style = self.style(cx);
5736 self.display_map.update(cx, |map, cx| {
5737 map.set_font(style.text.font_id, style.text.font_size, cx)
5738 });
5739 EditorElement::new(self.handle.clone(), style.clone(), self.cursor_shape).boxed()
5740 }
5741
5742 fn ui_name() -> &'static str {
5743 "Editor"
5744 }
5745
5746 fn on_focus(&mut self, cx: &mut ViewContext<Self>) {
5747 let focused_event = EditorFocused(cx.handle());
5748 cx.emit_global(focused_event);
5749 if let Some(rename) = self.pending_rename.as_ref() {
5750 cx.focus(&rename.editor);
5751 } else {
5752 self.focused = true;
5753 self.blink_cursors(self.blink_epoch, cx);
5754 self.buffer.update(cx, |buffer, cx| {
5755 buffer.finalize_last_transaction(cx);
5756 if self.leader_replica_id.is_none() {
5757 buffer.set_active_selections(&self.selections, cx);
5758 }
5759 });
5760 }
5761 }
5762
5763 fn on_blur(&mut self, cx: &mut ViewContext<Self>) {
5764 let blurred_event = EditorBlurred(cx.handle());
5765 cx.emit_global(blurred_event);
5766 self.focused = false;
5767 self.buffer
5768 .update(cx, |buffer, cx| buffer.remove_active_selections(cx));
5769 self.hide_context_menu(cx);
5770 cx.emit(Event::Blurred);
5771 cx.notify();
5772 }
5773
5774 fn keymap_context(&self, _: &AppContext) -> gpui::keymap::Context {
5775 let mut context = Self::default_keymap_context();
5776 let mode = match self.mode {
5777 EditorMode::SingleLine => "single_line",
5778 EditorMode::AutoHeight { .. } => "auto_height",
5779 EditorMode::Full => "full",
5780 };
5781 context.map.insert("mode".into(), mode.into());
5782 if self.pending_rename.is_some() {
5783 context.set.insert("renaming".into());
5784 }
5785 match self.context_menu.as_ref() {
5786 Some(ContextMenu::Completions(_)) => {
5787 context.set.insert("showing_completions".into());
5788 }
5789 Some(ContextMenu::CodeActions(_)) => {
5790 context.set.insert("showing_code_actions".into());
5791 }
5792 None => {}
5793 }
5794
5795 for layer in self.keymap_context_layers.values() {
5796 context.extend(layer);
5797 }
5798
5799 context
5800 }
5801}
5802
5803fn build_style(
5804 settings: &Settings,
5805 get_field_editor_theme: Option<GetFieldEditorTheme>,
5806 override_text_style: Option<&OverrideTextStyle>,
5807 cx: &AppContext,
5808) -> EditorStyle {
5809 let font_cache = cx.font_cache();
5810
5811 let mut theme = settings.theme.editor.clone();
5812 let mut style = if let Some(get_field_editor_theme) = get_field_editor_theme {
5813 let field_editor_theme = get_field_editor_theme(&settings.theme);
5814 theme.text_color = field_editor_theme.text.color;
5815 theme.selection = field_editor_theme.selection;
5816 theme.background = field_editor_theme
5817 .container
5818 .background_color
5819 .unwrap_or_default();
5820 EditorStyle {
5821 text: field_editor_theme.text,
5822 placeholder_text: field_editor_theme.placeholder_text,
5823 theme,
5824 }
5825 } else {
5826 let font_family_id = settings.buffer_font_family;
5827 let font_family_name = cx.font_cache().family_name(font_family_id).unwrap();
5828 let font_properties = Default::default();
5829 let font_id = font_cache
5830 .select_font(font_family_id, &font_properties)
5831 .unwrap();
5832 let font_size = settings.buffer_font_size;
5833 EditorStyle {
5834 text: TextStyle {
5835 color: settings.theme.editor.text_color,
5836 font_family_name,
5837 font_family_id,
5838 font_id,
5839 font_size,
5840 font_properties,
5841 underline: Default::default(),
5842 },
5843 placeholder_text: None,
5844 theme,
5845 }
5846 };
5847
5848 if let Some(highlight_style) = override_text_style.and_then(|build_style| build_style(&style)) {
5849 if let Some(highlighted) = style
5850 .text
5851 .clone()
5852 .highlight(highlight_style, font_cache)
5853 .log_err()
5854 {
5855 style.text = highlighted;
5856 }
5857 }
5858
5859 style
5860}
5861
5862trait SelectionExt {
5863 fn offset_range(&self, buffer: &MultiBufferSnapshot) -> Range<usize>;
5864 fn point_range(&self, buffer: &MultiBufferSnapshot) -> Range<Point>;
5865 fn display_range(&self, map: &DisplaySnapshot) -> Range<DisplayPoint>;
5866 fn spanned_rows(&self, include_end_if_at_line_start: bool, map: &DisplaySnapshot)
5867 -> Range<u32>;
5868}
5869
5870impl<T: ToPoint + ToOffset> SelectionExt for Selection<T> {
5871 fn point_range(&self, buffer: &MultiBufferSnapshot) -> Range<Point> {
5872 let start = self.start.to_point(buffer);
5873 let end = self.end.to_point(buffer);
5874 if self.reversed {
5875 end..start
5876 } else {
5877 start..end
5878 }
5879 }
5880
5881 fn offset_range(&self, buffer: &MultiBufferSnapshot) -> Range<usize> {
5882 let start = self.start.to_offset(buffer);
5883 let end = self.end.to_offset(buffer);
5884 if self.reversed {
5885 end..start
5886 } else {
5887 start..end
5888 }
5889 }
5890
5891 fn display_range(&self, map: &DisplaySnapshot) -> Range<DisplayPoint> {
5892 let start = self
5893 .start
5894 .to_point(&map.buffer_snapshot)
5895 .to_display_point(map);
5896 let end = self
5897 .end
5898 .to_point(&map.buffer_snapshot)
5899 .to_display_point(map);
5900 if self.reversed {
5901 end..start
5902 } else {
5903 start..end
5904 }
5905 }
5906
5907 fn spanned_rows(
5908 &self,
5909 include_end_if_at_line_start: bool,
5910 map: &DisplaySnapshot,
5911 ) -> Range<u32> {
5912 let start = self.start.to_point(&map.buffer_snapshot);
5913 let mut end = self.end.to_point(&map.buffer_snapshot);
5914 if !include_end_if_at_line_start && start.row != end.row && end.column == 0 {
5915 end.row -= 1;
5916 }
5917
5918 let buffer_start = map.prev_line_boundary(start).0;
5919 let buffer_end = map.next_line_boundary(end).0;
5920 buffer_start.row..buffer_end.row + 1
5921 }
5922}
5923
5924impl<T: InvalidationRegion> InvalidationStack<T> {
5925 fn invalidate<S>(&mut self, selections: &[Selection<S>], buffer: &MultiBufferSnapshot)
5926 where
5927 S: Clone + ToOffset,
5928 {
5929 while let Some(region) = self.last() {
5930 let all_selections_inside_invalidation_ranges =
5931 if selections.len() == region.ranges().len() {
5932 selections
5933 .iter()
5934 .zip(region.ranges().iter().map(|r| r.to_offset(&buffer)))
5935 .all(|(selection, invalidation_range)| {
5936 let head = selection.head().to_offset(&buffer);
5937 invalidation_range.start <= head && invalidation_range.end >= head
5938 })
5939 } else {
5940 false
5941 };
5942
5943 if all_selections_inside_invalidation_ranges {
5944 break;
5945 } else {
5946 self.pop();
5947 }
5948 }
5949 }
5950}
5951
5952impl<T> Default for InvalidationStack<T> {
5953 fn default() -> Self {
5954 Self(Default::default())
5955 }
5956}
5957
5958impl<T> Deref for InvalidationStack<T> {
5959 type Target = Vec<T>;
5960
5961 fn deref(&self) -> &Self::Target {
5962 &self.0
5963 }
5964}
5965
5966impl<T> DerefMut for InvalidationStack<T> {
5967 fn deref_mut(&mut self) -> &mut Self::Target {
5968 &mut self.0
5969 }
5970}
5971
5972impl InvalidationRegion for BracketPairState {
5973 fn ranges(&self) -> &[Range<Anchor>] {
5974 &self.ranges
5975 }
5976}
5977
5978impl InvalidationRegion for SnippetState {
5979 fn ranges(&self) -> &[Range<Anchor>] {
5980 &self.ranges[self.active_index]
5981 }
5982}
5983
5984impl Deref for EditorStyle {
5985 type Target = theme::Editor;
5986
5987 fn deref(&self) -> &Self::Target {
5988 &self.theme
5989 }
5990}
5991
5992pub fn diagnostic_block_renderer(diagnostic: Diagnostic, is_valid: bool) -> RenderBlock {
5993 let mut highlighted_lines = Vec::new();
5994 for line in diagnostic.message.lines() {
5995 highlighted_lines.push(highlight_diagnostic_message(line));
5996 }
5997
5998 Arc::new(move |cx: &BlockContext| {
5999 let settings = cx.global::<Settings>();
6000 let theme = &settings.theme.editor;
6001 let style = diagnostic_style(diagnostic.severity, is_valid, theme);
6002 let font_size = (style.text_scale_factor * settings.buffer_font_size).round();
6003 Flex::column()
6004 .with_children(highlighted_lines.iter().map(|(line, highlights)| {
6005 Label::new(
6006 line.clone(),
6007 style.message.clone().with_font_size(font_size),
6008 )
6009 .with_highlights(highlights.clone())
6010 .contained()
6011 .with_margin_left(cx.anchor_x)
6012 .boxed()
6013 }))
6014 .aligned()
6015 .left()
6016 .boxed()
6017 })
6018}
6019
6020pub fn highlight_diagnostic_message(message: &str) -> (String, Vec<usize>) {
6021 let mut message_without_backticks = String::new();
6022 let mut prev_offset = 0;
6023 let mut inside_block = false;
6024 let mut highlights = Vec::new();
6025 for (match_ix, (offset, _)) in message
6026 .match_indices('`')
6027 .chain([(message.len(), "")])
6028 .enumerate()
6029 {
6030 message_without_backticks.push_str(&message[prev_offset..offset]);
6031 if inside_block {
6032 highlights.extend(prev_offset - match_ix..offset - match_ix);
6033 }
6034
6035 inside_block = !inside_block;
6036 prev_offset = offset + 1;
6037 }
6038
6039 (message_without_backticks, highlights)
6040}
6041
6042pub fn diagnostic_style(
6043 severity: DiagnosticSeverity,
6044 valid: bool,
6045 theme: &theme::Editor,
6046) -> DiagnosticStyle {
6047 match (severity, valid) {
6048 (DiagnosticSeverity::ERROR, true) => theme.error_diagnostic.clone(),
6049 (DiagnosticSeverity::ERROR, false) => theme.invalid_error_diagnostic.clone(),
6050 (DiagnosticSeverity::WARNING, true) => theme.warning_diagnostic.clone(),
6051 (DiagnosticSeverity::WARNING, false) => theme.invalid_warning_diagnostic.clone(),
6052 (DiagnosticSeverity::INFORMATION, true) => theme.information_diagnostic.clone(),
6053 (DiagnosticSeverity::INFORMATION, false) => theme.invalid_information_diagnostic.clone(),
6054 (DiagnosticSeverity::HINT, true) => theme.hint_diagnostic.clone(),
6055 (DiagnosticSeverity::HINT, false) => theme.invalid_hint_diagnostic.clone(),
6056 _ => theme.invalid_hint_diagnostic.clone(),
6057 }
6058}
6059
6060pub fn combine_syntax_and_fuzzy_match_highlights(
6061 text: &str,
6062 default_style: HighlightStyle,
6063 syntax_ranges: impl Iterator<Item = (Range<usize>, HighlightStyle)>,
6064 match_indices: &[usize],
6065) -> Vec<(Range<usize>, HighlightStyle)> {
6066 let mut result = Vec::new();
6067 let mut match_indices = match_indices.iter().copied().peekable();
6068
6069 for (range, mut syntax_highlight) in syntax_ranges.chain([(usize::MAX..0, Default::default())])
6070 {
6071 syntax_highlight.weight = None;
6072
6073 // Add highlights for any fuzzy match characters before the next
6074 // syntax highlight range.
6075 while let Some(&match_index) = match_indices.peek() {
6076 if match_index >= range.start {
6077 break;
6078 }
6079 match_indices.next();
6080 let end_index = char_ix_after(match_index, text);
6081 let mut match_style = default_style;
6082 match_style.weight = Some(fonts::Weight::BOLD);
6083 result.push((match_index..end_index, match_style));
6084 }
6085
6086 if range.start == usize::MAX {
6087 break;
6088 }
6089
6090 // Add highlights for any fuzzy match characters within the
6091 // syntax highlight range.
6092 let mut offset = range.start;
6093 while let Some(&match_index) = match_indices.peek() {
6094 if match_index >= range.end {
6095 break;
6096 }
6097
6098 match_indices.next();
6099 if match_index > offset {
6100 result.push((offset..match_index, syntax_highlight));
6101 }
6102
6103 let mut end_index = char_ix_after(match_index, text);
6104 while let Some(&next_match_index) = match_indices.peek() {
6105 if next_match_index == end_index && next_match_index < range.end {
6106 end_index = char_ix_after(next_match_index, text);
6107 match_indices.next();
6108 } else {
6109 break;
6110 }
6111 }
6112
6113 let mut match_style = syntax_highlight;
6114 match_style.weight = Some(fonts::Weight::BOLD);
6115 result.push((match_index..end_index, match_style));
6116 offset = end_index;
6117 }
6118
6119 if offset < range.end {
6120 result.push((offset..range.end, syntax_highlight));
6121 }
6122 }
6123
6124 fn char_ix_after(ix: usize, text: &str) -> usize {
6125 ix + text[ix..].chars().next().unwrap().len_utf8()
6126 }
6127
6128 result
6129}
6130
6131pub fn styled_runs_for_code_label<'a>(
6132 label: &'a CodeLabel,
6133 syntax_theme: &'a theme::SyntaxTheme,
6134) -> impl 'a + Iterator<Item = (Range<usize>, HighlightStyle)> {
6135 let fade_out = HighlightStyle {
6136 fade_out: Some(0.35),
6137 ..Default::default()
6138 };
6139
6140 let mut prev_end = label.filter_range.end;
6141 label
6142 .runs
6143 .iter()
6144 .enumerate()
6145 .flat_map(move |(ix, (range, highlight_id))| {
6146 let style = if let Some(style) = highlight_id.style(syntax_theme) {
6147 style
6148 } else {
6149 return Default::default();
6150 };
6151 let mut muted_style = style.clone();
6152 muted_style.highlight(fade_out);
6153
6154 let mut runs = SmallVec::<[(Range<usize>, HighlightStyle); 3]>::new();
6155 if range.start >= label.filter_range.end {
6156 if range.start > prev_end {
6157 runs.push((prev_end..range.start, fade_out));
6158 }
6159 runs.push((range.clone(), muted_style));
6160 } else if range.end <= label.filter_range.end {
6161 runs.push((range.clone(), style));
6162 } else {
6163 runs.push((range.start..label.filter_range.end, style));
6164 runs.push((label.filter_range.end..range.end, muted_style));
6165 }
6166 prev_end = cmp::max(prev_end, range.end);
6167
6168 if ix + 1 == label.runs.len() && label.text.len() > prev_end {
6169 runs.push((prev_end..label.text.len(), fade_out));
6170 }
6171
6172 runs
6173 })
6174}
6175
6176#[cfg(test)]
6177mod tests {
6178
6179 use super::*;
6180 use gpui::{
6181 geometry::rect::RectF,
6182 platform::{WindowBounds, WindowOptions},
6183 };
6184 use language::{LanguageConfig, LanguageServerConfig};
6185 use lsp::FakeLanguageServer;
6186 use project::FakeFs;
6187 use smol::stream::StreamExt;
6188 use std::{cell::RefCell, rc::Rc, time::Instant};
6189 use text::Point;
6190 use unindent::Unindent;
6191 use util::test::{marked_text_by, sample_text};
6192 use workspace::FollowableItem;
6193
6194 #[gpui::test]
6195 fn test_edit_events(cx: &mut MutableAppContext) {
6196 populate_settings(cx);
6197 let buffer = cx.add_model(|cx| language::Buffer::new(0, "123456", cx));
6198
6199 let events = Rc::new(RefCell::new(Vec::new()));
6200 let (_, editor1) = cx.add_window(Default::default(), {
6201 let events = events.clone();
6202 |cx| {
6203 cx.subscribe(&cx.handle(), move |_, _, event, _| {
6204 if matches!(event, Event::Edited | Event::BufferEdited | Event::Dirtied) {
6205 events.borrow_mut().push(("editor1", *event));
6206 }
6207 })
6208 .detach();
6209 Editor::for_buffer(buffer.clone(), None, cx)
6210 }
6211 });
6212 let (_, editor2) = cx.add_window(Default::default(), {
6213 let events = events.clone();
6214 |cx| {
6215 cx.subscribe(&cx.handle(), move |_, _, event, _| {
6216 if matches!(event, Event::Edited | Event::BufferEdited | Event::Dirtied) {
6217 events.borrow_mut().push(("editor2", *event));
6218 }
6219 })
6220 .detach();
6221 Editor::for_buffer(buffer.clone(), None, cx)
6222 }
6223 });
6224 assert_eq!(mem::take(&mut *events.borrow_mut()), []);
6225
6226 // Mutating editor 1 will emit an `Edited` event only for that editor.
6227 editor1.update(cx, |editor, cx| editor.insert("X", cx));
6228 assert_eq!(
6229 mem::take(&mut *events.borrow_mut()),
6230 [
6231 ("editor1", Event::Edited),
6232 ("editor1", Event::BufferEdited),
6233 ("editor2", Event::BufferEdited),
6234 ("editor1", Event::Dirtied),
6235 ("editor2", Event::Dirtied)
6236 ]
6237 );
6238
6239 // Mutating editor 2 will emit an `Edited` event only for that editor.
6240 editor2.update(cx, |editor, cx| editor.delete(&Delete, cx));
6241 assert_eq!(
6242 mem::take(&mut *events.borrow_mut()),
6243 [
6244 ("editor2", Event::Edited),
6245 ("editor1", Event::BufferEdited),
6246 ("editor2", Event::BufferEdited),
6247 ]
6248 );
6249
6250 // Undoing on editor 1 will emit an `Edited` event only for that editor.
6251 editor1.update(cx, |editor, cx| editor.undo(&Undo, cx));
6252 assert_eq!(
6253 mem::take(&mut *events.borrow_mut()),
6254 [
6255 ("editor1", Event::Edited),
6256 ("editor1", Event::BufferEdited),
6257 ("editor2", Event::BufferEdited),
6258 ]
6259 );
6260
6261 // Redoing on editor 1 will emit an `Edited` event only for that editor.
6262 editor1.update(cx, |editor, cx| editor.redo(&Redo, cx));
6263 assert_eq!(
6264 mem::take(&mut *events.borrow_mut()),
6265 [
6266 ("editor1", Event::Edited),
6267 ("editor1", Event::BufferEdited),
6268 ("editor2", Event::BufferEdited),
6269 ]
6270 );
6271
6272 // Undoing on editor 2 will emit an `Edited` event only for that editor.
6273 editor2.update(cx, |editor, cx| editor.undo(&Undo, cx));
6274 assert_eq!(
6275 mem::take(&mut *events.borrow_mut()),
6276 [
6277 ("editor2", Event::Edited),
6278 ("editor1", Event::BufferEdited),
6279 ("editor2", Event::BufferEdited),
6280 ]
6281 );
6282
6283 // Redoing on editor 2 will emit an `Edited` event only for that editor.
6284 editor2.update(cx, |editor, cx| editor.redo(&Redo, cx));
6285 assert_eq!(
6286 mem::take(&mut *events.borrow_mut()),
6287 [
6288 ("editor2", Event::Edited),
6289 ("editor1", Event::BufferEdited),
6290 ("editor2", Event::BufferEdited),
6291 ]
6292 );
6293
6294 // No event is emitted when the mutation is a no-op.
6295 editor2.update(cx, |editor, cx| {
6296 editor.select_ranges([0..0], None, cx);
6297 editor.backspace(&Backspace, cx);
6298 });
6299 assert_eq!(mem::take(&mut *events.borrow_mut()), []);
6300 }
6301
6302 #[gpui::test]
6303 fn test_undo_redo_with_selection_restoration(cx: &mut MutableAppContext) {
6304 populate_settings(cx);
6305 let mut now = Instant::now();
6306 let buffer = cx.add_model(|cx| language::Buffer::new(0, "123456", cx));
6307 let group_interval = buffer.read(cx).transaction_group_interval();
6308 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
6309 let (_, editor) = cx.add_window(Default::default(), |cx| build_editor(buffer.clone(), cx));
6310
6311 editor.update(cx, |editor, cx| {
6312 editor.start_transaction_at(now, cx);
6313 editor.select_ranges([2..4], None, cx);
6314 editor.insert("cd", cx);
6315 editor.end_transaction_at(now, cx);
6316 assert_eq!(editor.text(cx), "12cd56");
6317 assert_eq!(editor.selected_ranges(cx), vec![4..4]);
6318
6319 editor.start_transaction_at(now, cx);
6320 editor.select_ranges([4..5], None, cx);
6321 editor.insert("e", cx);
6322 editor.end_transaction_at(now, cx);
6323 assert_eq!(editor.text(cx), "12cde6");
6324 assert_eq!(editor.selected_ranges(cx), vec![5..5]);
6325
6326 now += group_interval + Duration::from_millis(1);
6327 editor.select_ranges([2..2], None, cx);
6328
6329 // Simulate an edit in another editor
6330 buffer.update(cx, |buffer, cx| {
6331 buffer.start_transaction_at(now, cx);
6332 buffer.edit([0..1], "a", cx);
6333 buffer.edit([1..1], "b", cx);
6334 buffer.end_transaction_at(now, cx);
6335 });
6336
6337 assert_eq!(editor.text(cx), "ab2cde6");
6338 assert_eq!(editor.selected_ranges(cx), vec![3..3]);
6339
6340 // Last transaction happened past the group interval in a different editor.
6341 // Undo it individually and don't restore selections.
6342 editor.undo(&Undo, cx);
6343 assert_eq!(editor.text(cx), "12cde6");
6344 assert_eq!(editor.selected_ranges(cx), vec![2..2]);
6345
6346 // First two transactions happened within the group interval in this editor.
6347 // Undo them together and restore selections.
6348 editor.undo(&Undo, cx);
6349 editor.undo(&Undo, cx); // Undo stack is empty here, so this is a no-op.
6350 assert_eq!(editor.text(cx), "123456");
6351 assert_eq!(editor.selected_ranges(cx), vec![0..0]);
6352
6353 // Redo the first two transactions together.
6354 editor.redo(&Redo, cx);
6355 assert_eq!(editor.text(cx), "12cde6");
6356 assert_eq!(editor.selected_ranges(cx), vec![5..5]);
6357
6358 // Redo the last transaction on its own.
6359 editor.redo(&Redo, cx);
6360 assert_eq!(editor.text(cx), "ab2cde6");
6361 assert_eq!(editor.selected_ranges(cx), vec![6..6]);
6362
6363 // Test empty transactions.
6364 editor.start_transaction_at(now, cx);
6365 editor.end_transaction_at(now, cx);
6366 editor.undo(&Undo, cx);
6367 assert_eq!(editor.text(cx), "12cde6");
6368 });
6369 }
6370
6371 #[gpui::test]
6372 fn test_selection_with_mouse(cx: &mut gpui::MutableAppContext) {
6373 populate_settings(cx);
6374
6375 let buffer = MultiBuffer::build_simple("aaaaaa\nbbbbbb\ncccccc\nddddddd\n", cx);
6376 let (_, editor) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
6377 editor.update(cx, |view, cx| {
6378 view.begin_selection(DisplayPoint::new(2, 2), false, 1, cx);
6379 });
6380 assert_eq!(
6381 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
6382 [DisplayPoint::new(2, 2)..DisplayPoint::new(2, 2)]
6383 );
6384
6385 editor.update(cx, |view, cx| {
6386 view.update_selection(DisplayPoint::new(3, 3), 0, Vector2F::zero(), cx);
6387 });
6388
6389 assert_eq!(
6390 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
6391 [DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3)]
6392 );
6393
6394 editor.update(cx, |view, cx| {
6395 view.update_selection(DisplayPoint::new(1, 1), 0, Vector2F::zero(), cx);
6396 });
6397
6398 assert_eq!(
6399 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
6400 [DisplayPoint::new(2, 2)..DisplayPoint::new(1, 1)]
6401 );
6402
6403 editor.update(cx, |view, cx| {
6404 view.end_selection(cx);
6405 view.update_selection(DisplayPoint::new(3, 3), 0, Vector2F::zero(), cx);
6406 });
6407
6408 assert_eq!(
6409 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
6410 [DisplayPoint::new(2, 2)..DisplayPoint::new(1, 1)]
6411 );
6412
6413 editor.update(cx, |view, cx| {
6414 view.begin_selection(DisplayPoint::new(3, 3), true, 1, cx);
6415 view.update_selection(DisplayPoint::new(0, 0), 0, Vector2F::zero(), cx);
6416 });
6417
6418 assert_eq!(
6419 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
6420 [
6421 DisplayPoint::new(2, 2)..DisplayPoint::new(1, 1),
6422 DisplayPoint::new(3, 3)..DisplayPoint::new(0, 0)
6423 ]
6424 );
6425
6426 editor.update(cx, |view, cx| {
6427 view.end_selection(cx);
6428 });
6429
6430 assert_eq!(
6431 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
6432 [DisplayPoint::new(3, 3)..DisplayPoint::new(0, 0)]
6433 );
6434 }
6435
6436 #[gpui::test]
6437 fn test_canceling_pending_selection(cx: &mut gpui::MutableAppContext) {
6438 populate_settings(cx);
6439 let buffer = MultiBuffer::build_simple("aaaaaa\nbbbbbb\ncccccc\ndddddd\n", cx);
6440 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
6441
6442 view.update(cx, |view, cx| {
6443 view.begin_selection(DisplayPoint::new(2, 2), false, 1, cx);
6444 assert_eq!(
6445 view.selected_display_ranges(cx),
6446 [DisplayPoint::new(2, 2)..DisplayPoint::new(2, 2)]
6447 );
6448 });
6449
6450 view.update(cx, |view, cx| {
6451 view.update_selection(DisplayPoint::new(3, 3), 0, Vector2F::zero(), cx);
6452 assert_eq!(
6453 view.selected_display_ranges(cx),
6454 [DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3)]
6455 );
6456 });
6457
6458 view.update(cx, |view, cx| {
6459 view.cancel(&Cancel, cx);
6460 view.update_selection(DisplayPoint::new(1, 1), 0, Vector2F::zero(), cx);
6461 assert_eq!(
6462 view.selected_display_ranges(cx),
6463 [DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3)]
6464 );
6465 });
6466 }
6467
6468 #[gpui::test]
6469 fn test_navigation_history(cx: &mut gpui::MutableAppContext) {
6470 populate_settings(cx);
6471 use workspace::Item;
6472 let nav_history = Rc::new(RefCell::new(workspace::NavHistory::default()));
6473 let buffer = MultiBuffer::build_simple(&sample_text(30, 5, 'a'), cx);
6474
6475 cx.add_window(Default::default(), |cx| {
6476 let mut editor = build_editor(buffer.clone(), cx);
6477 editor.nav_history = Some(ItemNavHistory::new(nav_history.clone(), &cx.handle()));
6478
6479 // Move the cursor a small distance.
6480 // Nothing is added to the navigation history.
6481 editor.select_display_ranges(&[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)], cx);
6482 editor.select_display_ranges(&[DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0)], cx);
6483 assert!(nav_history.borrow_mut().pop_backward().is_none());
6484
6485 // Move the cursor a large distance.
6486 // The history can jump back to the previous position.
6487 editor.select_display_ranges(&[DisplayPoint::new(13, 0)..DisplayPoint::new(13, 3)], cx);
6488 let nav_entry = nav_history.borrow_mut().pop_backward().unwrap();
6489 editor.navigate(nav_entry.data.unwrap(), cx);
6490 assert_eq!(nav_entry.item.id(), cx.view_id());
6491 assert_eq!(
6492 editor.selected_display_ranges(cx),
6493 &[DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0)]
6494 );
6495 assert!(nav_history.borrow_mut().pop_backward().is_none());
6496
6497 // Move the cursor a small distance via the mouse.
6498 // Nothing is added to the navigation history.
6499 editor.begin_selection(DisplayPoint::new(5, 0), false, 1, cx);
6500 editor.end_selection(cx);
6501 assert_eq!(
6502 editor.selected_display_ranges(cx),
6503 &[DisplayPoint::new(5, 0)..DisplayPoint::new(5, 0)]
6504 );
6505 assert!(nav_history.borrow_mut().pop_backward().is_none());
6506
6507 // Move the cursor a large distance via the mouse.
6508 // The history can jump back to the previous position.
6509 editor.begin_selection(DisplayPoint::new(15, 0), false, 1, cx);
6510 editor.end_selection(cx);
6511 assert_eq!(
6512 editor.selected_display_ranges(cx),
6513 &[DisplayPoint::new(15, 0)..DisplayPoint::new(15, 0)]
6514 );
6515 let nav_entry = nav_history.borrow_mut().pop_backward().unwrap();
6516 editor.navigate(nav_entry.data.unwrap(), cx);
6517 assert_eq!(nav_entry.item.id(), cx.view_id());
6518 assert_eq!(
6519 editor.selected_display_ranges(cx),
6520 &[DisplayPoint::new(5, 0)..DisplayPoint::new(5, 0)]
6521 );
6522 assert!(nav_history.borrow_mut().pop_backward().is_none());
6523
6524 editor
6525 });
6526 }
6527
6528 #[gpui::test]
6529 fn test_cancel(cx: &mut gpui::MutableAppContext) {
6530 populate_settings(cx);
6531 let buffer = MultiBuffer::build_simple("aaaaaa\nbbbbbb\ncccccc\ndddddd\n", cx);
6532 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
6533
6534 view.update(cx, |view, cx| {
6535 view.begin_selection(DisplayPoint::new(3, 4), false, 1, cx);
6536 view.update_selection(DisplayPoint::new(1, 1), 0, Vector2F::zero(), cx);
6537 view.end_selection(cx);
6538
6539 view.begin_selection(DisplayPoint::new(0, 1), true, 1, cx);
6540 view.update_selection(DisplayPoint::new(0, 3), 0, Vector2F::zero(), cx);
6541 view.end_selection(cx);
6542 assert_eq!(
6543 view.selected_display_ranges(cx),
6544 [
6545 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
6546 DisplayPoint::new(3, 4)..DisplayPoint::new(1, 1),
6547 ]
6548 );
6549 });
6550
6551 view.update(cx, |view, cx| {
6552 view.cancel(&Cancel, cx);
6553 assert_eq!(
6554 view.selected_display_ranges(cx),
6555 [DisplayPoint::new(3, 4)..DisplayPoint::new(1, 1)]
6556 );
6557 });
6558
6559 view.update(cx, |view, cx| {
6560 view.cancel(&Cancel, cx);
6561 assert_eq!(
6562 view.selected_display_ranges(cx),
6563 [DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1)]
6564 );
6565 });
6566 }
6567
6568 #[gpui::test]
6569 fn test_fold(cx: &mut gpui::MutableAppContext) {
6570 populate_settings(cx);
6571 let buffer = MultiBuffer::build_simple(
6572 &"
6573 impl Foo {
6574 // Hello!
6575
6576 fn a() {
6577 1
6578 }
6579
6580 fn b() {
6581 2
6582 }
6583
6584 fn c() {
6585 3
6586 }
6587 }
6588 "
6589 .unindent(),
6590 cx,
6591 );
6592 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer.clone(), cx));
6593
6594 view.update(cx, |view, cx| {
6595 view.select_display_ranges(&[DisplayPoint::new(8, 0)..DisplayPoint::new(12, 0)], cx);
6596 view.fold(&Fold, cx);
6597 assert_eq!(
6598 view.display_text(cx),
6599 "
6600 impl Foo {
6601 // Hello!
6602
6603 fn a() {
6604 1
6605 }
6606
6607 fn b() {…
6608 }
6609
6610 fn c() {…
6611 }
6612 }
6613 "
6614 .unindent(),
6615 );
6616
6617 view.fold(&Fold, cx);
6618 assert_eq!(
6619 view.display_text(cx),
6620 "
6621 impl Foo {…
6622 }
6623 "
6624 .unindent(),
6625 );
6626
6627 view.unfold_lines(&UnfoldLines, cx);
6628 assert_eq!(
6629 view.display_text(cx),
6630 "
6631 impl Foo {
6632 // Hello!
6633
6634 fn a() {
6635 1
6636 }
6637
6638 fn b() {…
6639 }
6640
6641 fn c() {…
6642 }
6643 }
6644 "
6645 .unindent(),
6646 );
6647
6648 view.unfold_lines(&UnfoldLines, cx);
6649 assert_eq!(view.display_text(cx), buffer.read(cx).read(cx).text());
6650 });
6651 }
6652
6653 #[gpui::test]
6654 fn test_move_cursor(cx: &mut gpui::MutableAppContext) {
6655 populate_settings(cx);
6656 let buffer = MultiBuffer::build_simple(&sample_text(6, 6, 'a'), cx);
6657 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer.clone(), cx));
6658
6659 buffer.update(cx, |buffer, cx| {
6660 buffer.edit(
6661 vec![
6662 Point::new(1, 0)..Point::new(1, 0),
6663 Point::new(1, 1)..Point::new(1, 1),
6664 ],
6665 "\t",
6666 cx,
6667 );
6668 });
6669
6670 view.update(cx, |view, cx| {
6671 assert_eq!(
6672 view.selected_display_ranges(cx),
6673 &[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)]
6674 );
6675
6676 view.move_down(&MoveDown, cx);
6677 assert_eq!(
6678 view.selected_display_ranges(cx),
6679 &[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)]
6680 );
6681
6682 view.move_right(&MoveRight, cx);
6683 assert_eq!(
6684 view.selected_display_ranges(cx),
6685 &[DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4)]
6686 );
6687
6688 view.move_left(&MoveLeft, cx);
6689 assert_eq!(
6690 view.selected_display_ranges(cx),
6691 &[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)]
6692 );
6693
6694 view.move_up(&MoveUp, cx);
6695 assert_eq!(
6696 view.selected_display_ranges(cx),
6697 &[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)]
6698 );
6699
6700 view.move_to_end(&MoveToEnd, cx);
6701 assert_eq!(
6702 view.selected_display_ranges(cx),
6703 &[DisplayPoint::new(5, 6)..DisplayPoint::new(5, 6)]
6704 );
6705
6706 view.move_to_beginning(&MoveToBeginning, cx);
6707 assert_eq!(
6708 view.selected_display_ranges(cx),
6709 &[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)]
6710 );
6711
6712 view.select_display_ranges(&[DisplayPoint::new(0, 1)..DisplayPoint::new(0, 2)], cx);
6713 view.select_to_beginning(&SelectToBeginning, cx);
6714 assert_eq!(
6715 view.selected_display_ranges(cx),
6716 &[DisplayPoint::new(0, 1)..DisplayPoint::new(0, 0)]
6717 );
6718
6719 view.select_to_end(&SelectToEnd, cx);
6720 assert_eq!(
6721 view.selected_display_ranges(cx),
6722 &[DisplayPoint::new(0, 1)..DisplayPoint::new(5, 6)]
6723 );
6724 });
6725 }
6726
6727 #[gpui::test]
6728 fn test_move_cursor_multibyte(cx: &mut gpui::MutableAppContext) {
6729 populate_settings(cx);
6730 let buffer = MultiBuffer::build_simple("ⓐⓑⓒⓓⓔ\nabcde\nαβγδε\n", cx);
6731 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer.clone(), cx));
6732
6733 assert_eq!('ⓐ'.len_utf8(), 3);
6734 assert_eq!('α'.len_utf8(), 2);
6735
6736 view.update(cx, |view, cx| {
6737 view.fold_ranges(
6738 vec![
6739 Point::new(0, 6)..Point::new(0, 12),
6740 Point::new(1, 2)..Point::new(1, 4),
6741 Point::new(2, 4)..Point::new(2, 8),
6742 ],
6743 cx,
6744 );
6745 assert_eq!(view.display_text(cx), "ⓐⓑ…ⓔ\nab…e\nαβ…ε\n");
6746
6747 view.move_right(&MoveRight, cx);
6748 assert_eq!(
6749 view.selected_display_ranges(cx),
6750 &[empty_range(0, "ⓐ".len())]
6751 );
6752 view.move_right(&MoveRight, cx);
6753 assert_eq!(
6754 view.selected_display_ranges(cx),
6755 &[empty_range(0, "ⓐⓑ".len())]
6756 );
6757 view.move_right(&MoveRight, cx);
6758 assert_eq!(
6759 view.selected_display_ranges(cx),
6760 &[empty_range(0, "ⓐⓑ…".len())]
6761 );
6762
6763 view.move_down(&MoveDown, cx);
6764 assert_eq!(
6765 view.selected_display_ranges(cx),
6766 &[empty_range(1, "ab…".len())]
6767 );
6768 view.move_left(&MoveLeft, cx);
6769 assert_eq!(
6770 view.selected_display_ranges(cx),
6771 &[empty_range(1, "ab".len())]
6772 );
6773 view.move_left(&MoveLeft, cx);
6774 assert_eq!(
6775 view.selected_display_ranges(cx),
6776 &[empty_range(1, "a".len())]
6777 );
6778
6779 view.move_down(&MoveDown, cx);
6780 assert_eq!(
6781 view.selected_display_ranges(cx),
6782 &[empty_range(2, "α".len())]
6783 );
6784 view.move_right(&MoveRight, cx);
6785 assert_eq!(
6786 view.selected_display_ranges(cx),
6787 &[empty_range(2, "αβ".len())]
6788 );
6789 view.move_right(&MoveRight, cx);
6790 assert_eq!(
6791 view.selected_display_ranges(cx),
6792 &[empty_range(2, "αβ…".len())]
6793 );
6794 view.move_right(&MoveRight, cx);
6795 assert_eq!(
6796 view.selected_display_ranges(cx),
6797 &[empty_range(2, "αβ…ε".len())]
6798 );
6799
6800 view.move_up(&MoveUp, cx);
6801 assert_eq!(
6802 view.selected_display_ranges(cx),
6803 &[empty_range(1, "ab…e".len())]
6804 );
6805 view.move_up(&MoveUp, cx);
6806 assert_eq!(
6807 view.selected_display_ranges(cx),
6808 &[empty_range(0, "ⓐⓑ…ⓔ".len())]
6809 );
6810 view.move_left(&MoveLeft, cx);
6811 assert_eq!(
6812 view.selected_display_ranges(cx),
6813 &[empty_range(0, "ⓐⓑ…".len())]
6814 );
6815 view.move_left(&MoveLeft, cx);
6816 assert_eq!(
6817 view.selected_display_ranges(cx),
6818 &[empty_range(0, "ⓐⓑ".len())]
6819 );
6820 view.move_left(&MoveLeft, cx);
6821 assert_eq!(
6822 view.selected_display_ranges(cx),
6823 &[empty_range(0, "ⓐ".len())]
6824 );
6825 });
6826 }
6827
6828 #[gpui::test]
6829 fn test_move_cursor_different_line_lengths(cx: &mut gpui::MutableAppContext) {
6830 populate_settings(cx);
6831 let buffer = MultiBuffer::build_simple("ⓐⓑⓒⓓⓔ\nabcd\nαβγ\nabcd\nⓐⓑⓒⓓⓔ\n", cx);
6832 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer.clone(), cx));
6833 view.update(cx, |view, cx| {
6834 view.select_display_ranges(&[empty_range(0, "ⓐⓑⓒⓓⓔ".len())], cx);
6835 view.move_down(&MoveDown, cx);
6836 assert_eq!(
6837 view.selected_display_ranges(cx),
6838 &[empty_range(1, "abcd".len())]
6839 );
6840
6841 view.move_down(&MoveDown, cx);
6842 assert_eq!(
6843 view.selected_display_ranges(cx),
6844 &[empty_range(2, "αβγ".len())]
6845 );
6846
6847 view.move_down(&MoveDown, cx);
6848 assert_eq!(
6849 view.selected_display_ranges(cx),
6850 &[empty_range(3, "abcd".len())]
6851 );
6852
6853 view.move_down(&MoveDown, cx);
6854 assert_eq!(
6855 view.selected_display_ranges(cx),
6856 &[empty_range(4, "ⓐⓑⓒⓓⓔ".len())]
6857 );
6858
6859 view.move_up(&MoveUp, cx);
6860 assert_eq!(
6861 view.selected_display_ranges(cx),
6862 &[empty_range(3, "abcd".len())]
6863 );
6864
6865 view.move_up(&MoveUp, cx);
6866 assert_eq!(
6867 view.selected_display_ranges(cx),
6868 &[empty_range(2, "αβγ".len())]
6869 );
6870 });
6871 }
6872
6873 #[gpui::test]
6874 fn test_beginning_end_of_line(cx: &mut gpui::MutableAppContext) {
6875 populate_settings(cx);
6876 let buffer = MultiBuffer::build_simple("abc\n def", cx);
6877 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
6878 view.update(cx, |view, cx| {
6879 view.select_display_ranges(
6880 &[
6881 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
6882 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4),
6883 ],
6884 cx,
6885 );
6886 });
6887
6888 view.update(cx, |view, cx| {
6889 view.move_to_beginning_of_line(&MoveToBeginningOfLine, cx);
6890 assert_eq!(
6891 view.selected_display_ranges(cx),
6892 &[
6893 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
6894 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
6895 ]
6896 );
6897 });
6898
6899 view.update(cx, |view, cx| {
6900 view.move_to_beginning_of_line(&MoveToBeginningOfLine, cx);
6901 assert_eq!(
6902 view.selected_display_ranges(cx),
6903 &[
6904 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
6905 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
6906 ]
6907 );
6908 });
6909
6910 view.update(cx, |view, cx| {
6911 view.move_to_beginning_of_line(&MoveToBeginningOfLine, cx);
6912 assert_eq!(
6913 view.selected_display_ranges(cx),
6914 &[
6915 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
6916 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
6917 ]
6918 );
6919 });
6920
6921 view.update(cx, |view, cx| {
6922 view.move_to_end_of_line(&MoveToEndOfLine, cx);
6923 assert_eq!(
6924 view.selected_display_ranges(cx),
6925 &[
6926 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
6927 DisplayPoint::new(1, 5)..DisplayPoint::new(1, 5),
6928 ]
6929 );
6930 });
6931
6932 // Moving to the end of line again is a no-op.
6933 view.update(cx, |view, cx| {
6934 view.move_to_end_of_line(&MoveToEndOfLine, cx);
6935 assert_eq!(
6936 view.selected_display_ranges(cx),
6937 &[
6938 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
6939 DisplayPoint::new(1, 5)..DisplayPoint::new(1, 5),
6940 ]
6941 );
6942 });
6943
6944 view.update(cx, |view, cx| {
6945 view.move_left(&MoveLeft, cx);
6946 view.select_to_beginning_of_line(&SelectToBeginningOfLine(true), cx);
6947 assert_eq!(
6948 view.selected_display_ranges(cx),
6949 &[
6950 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 0),
6951 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 2),
6952 ]
6953 );
6954 });
6955
6956 view.update(cx, |view, cx| {
6957 view.select_to_beginning_of_line(&SelectToBeginningOfLine(true), cx);
6958 assert_eq!(
6959 view.selected_display_ranges(cx),
6960 &[
6961 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 0),
6962 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 0),
6963 ]
6964 );
6965 });
6966
6967 view.update(cx, |view, cx| {
6968 view.select_to_beginning_of_line(&SelectToBeginningOfLine(true), cx);
6969 assert_eq!(
6970 view.selected_display_ranges(cx),
6971 &[
6972 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 0),
6973 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 2),
6974 ]
6975 );
6976 });
6977
6978 view.update(cx, |view, cx| {
6979 view.select_to_end_of_line(&SelectToEndOfLine(true), cx);
6980 assert_eq!(
6981 view.selected_display_ranges(cx),
6982 &[
6983 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 3),
6984 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 5),
6985 ]
6986 );
6987 });
6988
6989 view.update(cx, |view, cx| {
6990 view.delete_to_end_of_line(&DeleteToEndOfLine, cx);
6991 assert_eq!(view.display_text(cx), "ab\n de");
6992 assert_eq!(
6993 view.selected_display_ranges(cx),
6994 &[
6995 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
6996 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4),
6997 ]
6998 );
6999 });
7000
7001 view.update(cx, |view, cx| {
7002 view.delete_to_beginning_of_line(&DeleteToBeginningOfLine, cx);
7003 assert_eq!(view.display_text(cx), "\n");
7004 assert_eq!(
7005 view.selected_display_ranges(cx),
7006 &[
7007 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
7008 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
7009 ]
7010 );
7011 });
7012 }
7013
7014 #[gpui::test]
7015 fn test_prev_next_word_boundary(cx: &mut gpui::MutableAppContext) {
7016 populate_settings(cx);
7017 let buffer = MultiBuffer::build_simple("use std::str::{foo, bar}\n\n {baz.qux()}", cx);
7018 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
7019 view.update(cx, |view, cx| {
7020 view.select_display_ranges(
7021 &[
7022 DisplayPoint::new(0, 11)..DisplayPoint::new(0, 11),
7023 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 4),
7024 ],
7025 cx,
7026 );
7027
7028 view.move_to_previous_word_start(&MoveToPreviousWordStart, cx);
7029 assert_selection_ranges(
7030 "use std::<>str::{foo, bar}\n\n {[]baz.qux()}",
7031 vec![('<', '>'), ('[', ']')],
7032 view,
7033 cx,
7034 );
7035
7036 view.move_to_previous_word_start(&MoveToPreviousWordStart, cx);
7037 assert_selection_ranges(
7038 "use std<>::str::{foo, bar}\n\n []{baz.qux()}",
7039 vec![('<', '>'), ('[', ']')],
7040 view,
7041 cx,
7042 );
7043
7044 view.move_to_previous_word_start(&MoveToPreviousWordStart, cx);
7045 assert_selection_ranges(
7046 "use <>std::str::{foo, bar}\n\n[] {baz.qux()}",
7047 vec![('<', '>'), ('[', ']')],
7048 view,
7049 cx,
7050 );
7051
7052 view.move_to_previous_word_start(&MoveToPreviousWordStart, cx);
7053 assert_selection_ranges(
7054 "<>use std::str::{foo, bar}\n[]\n {baz.qux()}",
7055 vec![('<', '>'), ('[', ']')],
7056 view,
7057 cx,
7058 );
7059
7060 view.move_to_previous_word_start(&MoveToPreviousWordStart, cx);
7061 assert_selection_ranges(
7062 "<>use std::str::{foo, bar[]}\n\n {baz.qux()}",
7063 vec![('<', '>'), ('[', ']')],
7064 view,
7065 cx,
7066 );
7067
7068 view.move_to_next_word_end(&MoveToNextWordEnd, cx);
7069 assert_selection_ranges(
7070 "use<> std::str::{foo, bar}[]\n\n {baz.qux()}",
7071 vec![('<', '>'), ('[', ']')],
7072 view,
7073 cx,
7074 );
7075
7076 view.move_to_next_word_end(&MoveToNextWordEnd, cx);
7077 assert_selection_ranges(
7078 "use std<>::str::{foo, bar}\n[]\n {baz.qux()}",
7079 vec![('<', '>'), ('[', ']')],
7080 view,
7081 cx,
7082 );
7083
7084 view.move_to_next_word_end(&MoveToNextWordEnd, cx);
7085 assert_selection_ranges(
7086 "use std::<>str::{foo, bar}\n\n {[]baz.qux()}",
7087 vec![('<', '>'), ('[', ']')],
7088 view,
7089 cx,
7090 );
7091
7092 view.move_right(&MoveRight, cx);
7093 view.select_to_previous_word_start(&SelectToPreviousWordBoundary, cx);
7094 assert_selection_ranges(
7095 "use std::>s<tr::{foo, bar}\n\n {]b[az.qux()}",
7096 vec![('<', '>'), ('[', ']')],
7097 view,
7098 cx,
7099 );
7100
7101 view.select_to_previous_word_start(&SelectToPreviousWordBoundary, cx);
7102 assert_selection_ranges(
7103 "use std>::s<tr::{foo, bar}\n\n ]{b[az.qux()}",
7104 vec![('<', '>'), ('[', ']')],
7105 view,
7106 cx,
7107 );
7108
7109 view.select_to_next_word_end(&SelectToNextWordBoundary, cx);
7110 assert_selection_ranges(
7111 "use std::>s<tr::{foo, bar}\n\n {]b[az.qux()}",
7112 vec![('<', '>'), ('[', ']')],
7113 view,
7114 cx,
7115 );
7116 });
7117 }
7118
7119 #[gpui::test]
7120 fn test_prev_next_word_bounds_with_soft_wrap(cx: &mut gpui::MutableAppContext) {
7121 populate_settings(cx);
7122 let buffer = MultiBuffer::build_simple("use one::{\n two::three::four::five\n};", cx);
7123 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
7124
7125 view.update(cx, |view, cx| {
7126 view.set_wrap_width(Some(140.), cx);
7127 assert_eq!(
7128 view.display_text(cx),
7129 "use one::{\n two::three::\n four::five\n};"
7130 );
7131
7132 view.select_display_ranges(&[DisplayPoint::new(1, 7)..DisplayPoint::new(1, 7)], cx);
7133
7134 view.move_to_next_word_end(&MoveToNextWordEnd, cx);
7135 assert_eq!(
7136 view.selected_display_ranges(cx),
7137 &[DisplayPoint::new(1, 9)..DisplayPoint::new(1, 9)]
7138 );
7139
7140 view.move_to_next_word_end(&MoveToNextWordEnd, cx);
7141 assert_eq!(
7142 view.selected_display_ranges(cx),
7143 &[DisplayPoint::new(1, 14)..DisplayPoint::new(1, 14)]
7144 );
7145
7146 view.move_to_next_word_end(&MoveToNextWordEnd, cx);
7147 assert_eq!(
7148 view.selected_display_ranges(cx),
7149 &[DisplayPoint::new(2, 4)..DisplayPoint::new(2, 4)]
7150 );
7151
7152 view.move_to_next_word_end(&MoveToNextWordEnd, cx);
7153 assert_eq!(
7154 view.selected_display_ranges(cx),
7155 &[DisplayPoint::new(2, 8)..DisplayPoint::new(2, 8)]
7156 );
7157
7158 view.move_to_previous_word_start(&MoveToPreviousWordStart, cx);
7159 assert_eq!(
7160 view.selected_display_ranges(cx),
7161 &[DisplayPoint::new(2, 4)..DisplayPoint::new(2, 4)]
7162 );
7163
7164 view.move_to_previous_word_start(&MoveToPreviousWordStart, cx);
7165 assert_eq!(
7166 view.selected_display_ranges(cx),
7167 &[DisplayPoint::new(1, 14)..DisplayPoint::new(1, 14)]
7168 );
7169 });
7170 }
7171
7172 #[gpui::test]
7173 fn test_delete_to_word_boundary(cx: &mut gpui::MutableAppContext) {
7174 populate_settings(cx);
7175 let buffer = MultiBuffer::build_simple("one two three four", cx);
7176 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer.clone(), cx));
7177
7178 view.update(cx, |view, cx| {
7179 view.select_display_ranges(
7180 &[
7181 // an empty selection - the preceding word fragment is deleted
7182 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
7183 // characters selected - they are deleted
7184 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 12),
7185 ],
7186 cx,
7187 );
7188 view.delete_to_previous_word_start(&DeleteToPreviousWordBoundary, cx);
7189 });
7190
7191 assert_eq!(buffer.read(cx).read(cx).text(), "e two te four");
7192
7193 view.update(cx, |view, cx| {
7194 view.select_display_ranges(
7195 &[
7196 // an empty selection - the following word fragment is deleted
7197 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
7198 // characters selected - they are deleted
7199 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 10),
7200 ],
7201 cx,
7202 );
7203 view.delete_to_next_word_end(&DeleteToNextWordBoundary, cx);
7204 });
7205
7206 assert_eq!(buffer.read(cx).read(cx).text(), "e t te our");
7207 }
7208
7209 #[gpui::test]
7210 fn test_newline(cx: &mut gpui::MutableAppContext) {
7211 populate_settings(cx);
7212 let buffer = MultiBuffer::build_simple("aaaa\n bbbb\n", cx);
7213 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer.clone(), cx));
7214
7215 view.update(cx, |view, cx| {
7216 view.select_display_ranges(
7217 &[
7218 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
7219 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
7220 DisplayPoint::new(1, 6)..DisplayPoint::new(1, 6),
7221 ],
7222 cx,
7223 );
7224
7225 view.newline(&Newline, cx);
7226 assert_eq!(view.text(cx), "aa\naa\n \n bb\n bb\n");
7227 });
7228 }
7229
7230 #[gpui::test]
7231 fn test_newline_with_old_selections(cx: &mut gpui::MutableAppContext) {
7232 populate_settings(cx);
7233 let buffer = MultiBuffer::build_simple(
7234 "
7235 a
7236 b(
7237 X
7238 )
7239 c(
7240 X
7241 )
7242 "
7243 .unindent()
7244 .as_str(),
7245 cx,
7246 );
7247
7248 let (_, editor) = cx.add_window(Default::default(), |cx| {
7249 let mut editor = build_editor(buffer.clone(), cx);
7250 editor.select_ranges(
7251 [
7252 Point::new(2, 4)..Point::new(2, 5),
7253 Point::new(5, 4)..Point::new(5, 5),
7254 ],
7255 None,
7256 cx,
7257 );
7258 editor
7259 });
7260
7261 // Edit the buffer directly, deleting ranges surrounding the editor's selections
7262 buffer.update(cx, |buffer, cx| {
7263 buffer.edit(
7264 [
7265 Point::new(1, 2)..Point::new(3, 0),
7266 Point::new(4, 2)..Point::new(6, 0),
7267 ],
7268 "",
7269 cx,
7270 );
7271 assert_eq!(
7272 buffer.read(cx).text(),
7273 "
7274 a
7275 b()
7276 c()
7277 "
7278 .unindent()
7279 );
7280 });
7281
7282 editor.update(cx, |editor, cx| {
7283 assert_eq!(
7284 editor.selected_ranges(cx),
7285 &[
7286 Point::new(1, 2)..Point::new(1, 2),
7287 Point::new(2, 2)..Point::new(2, 2),
7288 ],
7289 );
7290
7291 editor.newline(&Newline, cx);
7292 assert_eq!(
7293 editor.text(cx),
7294 "
7295 a
7296 b(
7297 )
7298 c(
7299 )
7300 "
7301 .unindent()
7302 );
7303
7304 // The selections are moved after the inserted newlines
7305 assert_eq!(
7306 editor.selected_ranges(cx),
7307 &[
7308 Point::new(2, 0)..Point::new(2, 0),
7309 Point::new(4, 0)..Point::new(4, 0),
7310 ],
7311 );
7312 });
7313 }
7314
7315 #[gpui::test]
7316 fn test_insert_with_old_selections(cx: &mut gpui::MutableAppContext) {
7317 populate_settings(cx);
7318 let buffer = MultiBuffer::build_simple("a( X ), b( Y ), c( Z )", cx);
7319 let (_, editor) = cx.add_window(Default::default(), |cx| {
7320 let mut editor = build_editor(buffer.clone(), cx);
7321 editor.select_ranges([3..4, 11..12, 19..20], None, cx);
7322 editor
7323 });
7324
7325 // Edit the buffer directly, deleting ranges surrounding the editor's selections
7326 buffer.update(cx, |buffer, cx| {
7327 buffer.edit([2..5, 10..13, 18..21], "", cx);
7328 assert_eq!(buffer.read(cx).text(), "a(), b(), c()".unindent());
7329 });
7330
7331 editor.update(cx, |editor, cx| {
7332 assert_eq!(editor.selected_ranges(cx), &[2..2, 7..7, 12..12],);
7333
7334 editor.insert("Z", cx);
7335 assert_eq!(editor.text(cx), "a(Z), b(Z), c(Z)");
7336
7337 // The selections are moved after the inserted characters
7338 assert_eq!(editor.selected_ranges(cx), &[3..3, 9..9, 15..15],);
7339 });
7340 }
7341
7342 #[gpui::test]
7343 fn test_indent_outdent(cx: &mut gpui::MutableAppContext) {
7344 populate_settings(cx);
7345 let buffer = MultiBuffer::build_simple(" one two\nthree\n four", cx);
7346 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer.clone(), cx));
7347
7348 view.update(cx, |view, cx| {
7349 // two selections on the same line
7350 view.select_display_ranges(
7351 &[
7352 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 5),
7353 DisplayPoint::new(0, 6)..DisplayPoint::new(0, 9),
7354 ],
7355 cx,
7356 );
7357
7358 // indent from mid-tabstop to full tabstop
7359 view.tab(&Tab, cx);
7360 assert_eq!(view.text(cx), " one two\nthree\n four");
7361 assert_eq!(
7362 view.selected_display_ranges(cx),
7363 &[
7364 DisplayPoint::new(0, 4)..DisplayPoint::new(0, 7),
7365 DisplayPoint::new(0, 8)..DisplayPoint::new(0, 11),
7366 ]
7367 );
7368
7369 // outdent from 1 tabstop to 0 tabstops
7370 view.outdent(&Outdent, cx);
7371 assert_eq!(view.text(cx), "one two\nthree\n four");
7372 assert_eq!(
7373 view.selected_display_ranges(cx),
7374 &[
7375 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 3),
7376 DisplayPoint::new(0, 4)..DisplayPoint::new(0, 7),
7377 ]
7378 );
7379
7380 // select across line ending
7381 view.select_display_ranges(&[DisplayPoint::new(1, 1)..DisplayPoint::new(2, 0)], cx);
7382
7383 // indent and outdent affect only the preceding line
7384 view.tab(&Tab, cx);
7385 assert_eq!(view.text(cx), "one two\n three\n four");
7386 assert_eq!(
7387 view.selected_display_ranges(cx),
7388 &[DisplayPoint::new(1, 5)..DisplayPoint::new(2, 0)]
7389 );
7390 view.outdent(&Outdent, cx);
7391 assert_eq!(view.text(cx), "one two\nthree\n four");
7392 assert_eq!(
7393 view.selected_display_ranges(cx),
7394 &[DisplayPoint::new(1, 1)..DisplayPoint::new(2, 0)]
7395 );
7396
7397 // Ensure that indenting/outdenting works when the cursor is at column 0.
7398 view.select_display_ranges(&[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)], cx);
7399 view.tab(&Tab, cx);
7400 assert_eq!(view.text(cx), "one two\n three\n four");
7401 assert_eq!(
7402 view.selected_display_ranges(cx),
7403 &[DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4)]
7404 );
7405
7406 view.select_display_ranges(&[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)], cx);
7407 view.outdent(&Outdent, cx);
7408 assert_eq!(view.text(cx), "one two\nthree\n four");
7409 assert_eq!(
7410 view.selected_display_ranges(cx),
7411 &[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)]
7412 );
7413 });
7414 }
7415
7416 #[gpui::test]
7417 fn test_backspace(cx: &mut gpui::MutableAppContext) {
7418 populate_settings(cx);
7419 let (_, view) = cx.add_window(Default::default(), |cx| {
7420 build_editor(MultiBuffer::build_simple("", cx), cx)
7421 });
7422
7423 view.update(cx, |view, cx| {
7424 view.set_text("one two three\nfour five six\nseven eight nine\nten\n", cx);
7425 view.select_display_ranges(
7426 &[
7427 // an empty selection - the preceding character is deleted
7428 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
7429 // one character selected - it is deleted
7430 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
7431 // a line suffix selected - it is deleted
7432 DisplayPoint::new(2, 6)..DisplayPoint::new(3, 0),
7433 ],
7434 cx,
7435 );
7436 view.backspace(&Backspace, cx);
7437 assert_eq!(view.text(cx), "oe two three\nfou five six\nseven ten\n");
7438
7439 view.set_text(" one\n two\n three\n four", cx);
7440 view.select_display_ranges(
7441 &[
7442 // cursors at the the end of leading indent - last indent is deleted
7443 DisplayPoint::new(0, 4)..DisplayPoint::new(0, 4),
7444 DisplayPoint::new(1, 8)..DisplayPoint::new(1, 8),
7445 // cursors inside leading indent - overlapping indent deletions are coalesced
7446 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 4),
7447 DisplayPoint::new(2, 5)..DisplayPoint::new(2, 5),
7448 DisplayPoint::new(2, 6)..DisplayPoint::new(2, 6),
7449 // cursor at the beginning of a line - preceding newline is deleted
7450 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
7451 // selection inside leading indent - only the selected character is deleted
7452 DisplayPoint::new(3, 2)..DisplayPoint::new(3, 3),
7453 ],
7454 cx,
7455 );
7456 view.backspace(&Backspace, cx);
7457 assert_eq!(view.text(cx), "one\n two\n three four");
7458 });
7459 }
7460
7461 #[gpui::test]
7462 fn test_delete(cx: &mut gpui::MutableAppContext) {
7463 populate_settings(cx);
7464 let buffer =
7465 MultiBuffer::build_simple("one two three\nfour five six\nseven eight nine\nten\n", cx);
7466 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer.clone(), cx));
7467
7468 view.update(cx, |view, cx| {
7469 view.select_display_ranges(
7470 &[
7471 // an empty selection - the following character is deleted
7472 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
7473 // one character selected - it is deleted
7474 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
7475 // a line suffix selected - it is deleted
7476 DisplayPoint::new(2, 6)..DisplayPoint::new(3, 0),
7477 ],
7478 cx,
7479 );
7480 view.delete(&Delete, cx);
7481 });
7482
7483 assert_eq!(
7484 buffer.read(cx).read(cx).text(),
7485 "on two three\nfou five six\nseven ten\n"
7486 );
7487 }
7488
7489 #[gpui::test]
7490 fn test_delete_line(cx: &mut gpui::MutableAppContext) {
7491 populate_settings(cx);
7492 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
7493 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
7494 view.update(cx, |view, cx| {
7495 view.select_display_ranges(
7496 &[
7497 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
7498 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 1),
7499 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
7500 ],
7501 cx,
7502 );
7503 view.delete_line(&DeleteLine, cx);
7504 assert_eq!(view.display_text(cx), "ghi");
7505 assert_eq!(
7506 view.selected_display_ranges(cx),
7507 vec![
7508 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
7509 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1)
7510 ]
7511 );
7512 });
7513
7514 populate_settings(cx);
7515 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
7516 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
7517 view.update(cx, |view, cx| {
7518 view.select_display_ranges(&[DisplayPoint::new(2, 0)..DisplayPoint::new(0, 1)], cx);
7519 view.delete_line(&DeleteLine, cx);
7520 assert_eq!(view.display_text(cx), "ghi\n");
7521 assert_eq!(
7522 view.selected_display_ranges(cx),
7523 vec![DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1)]
7524 );
7525 });
7526 }
7527
7528 #[gpui::test]
7529 fn test_duplicate_line(cx: &mut gpui::MutableAppContext) {
7530 populate_settings(cx);
7531 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
7532 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
7533 view.update(cx, |view, cx| {
7534 view.select_display_ranges(
7535 &[
7536 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
7537 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
7538 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
7539 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
7540 ],
7541 cx,
7542 );
7543 view.duplicate_line(&DuplicateLine, cx);
7544 assert_eq!(view.display_text(cx), "abc\nabc\ndef\ndef\nghi\n\n");
7545 assert_eq!(
7546 view.selected_display_ranges(cx),
7547 vec![
7548 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 1),
7549 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
7550 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
7551 DisplayPoint::new(6, 0)..DisplayPoint::new(6, 0),
7552 ]
7553 );
7554 });
7555
7556 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
7557 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
7558 view.update(cx, |view, cx| {
7559 view.select_display_ranges(
7560 &[
7561 DisplayPoint::new(0, 1)..DisplayPoint::new(1, 1),
7562 DisplayPoint::new(1, 2)..DisplayPoint::new(2, 1),
7563 ],
7564 cx,
7565 );
7566 view.duplicate_line(&DuplicateLine, cx);
7567 assert_eq!(view.display_text(cx), "abc\ndef\nghi\nabc\ndef\nghi\n");
7568 assert_eq!(
7569 view.selected_display_ranges(cx),
7570 vec![
7571 DisplayPoint::new(3, 1)..DisplayPoint::new(4, 1),
7572 DisplayPoint::new(4, 2)..DisplayPoint::new(5, 1),
7573 ]
7574 );
7575 });
7576 }
7577
7578 #[gpui::test]
7579 fn test_move_line_up_down(cx: &mut gpui::MutableAppContext) {
7580 populate_settings(cx);
7581 let buffer = MultiBuffer::build_simple(&sample_text(10, 5, 'a'), cx);
7582 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
7583 view.update(cx, |view, cx| {
7584 view.fold_ranges(
7585 vec![
7586 Point::new(0, 2)..Point::new(1, 2),
7587 Point::new(2, 3)..Point::new(4, 1),
7588 Point::new(7, 0)..Point::new(8, 4),
7589 ],
7590 cx,
7591 );
7592 view.select_display_ranges(
7593 &[
7594 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
7595 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 1),
7596 DisplayPoint::new(3, 2)..DisplayPoint::new(4, 3),
7597 DisplayPoint::new(5, 0)..DisplayPoint::new(5, 2),
7598 ],
7599 cx,
7600 );
7601 assert_eq!(
7602 view.display_text(cx),
7603 "aa…bbb\nccc…eeee\nfffff\nggggg\n…i\njjjjj"
7604 );
7605
7606 view.move_line_up(&MoveLineUp, cx);
7607 assert_eq!(
7608 view.display_text(cx),
7609 "aa…bbb\nccc…eeee\nggggg\n…i\njjjjj\nfffff"
7610 );
7611 assert_eq!(
7612 view.selected_display_ranges(cx),
7613 vec![
7614 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
7615 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
7616 DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3),
7617 DisplayPoint::new(4, 0)..DisplayPoint::new(4, 2)
7618 ]
7619 );
7620 });
7621
7622 view.update(cx, |view, cx| {
7623 view.move_line_down(&MoveLineDown, cx);
7624 assert_eq!(
7625 view.display_text(cx),
7626 "ccc…eeee\naa…bbb\nfffff\nggggg\n…i\njjjjj"
7627 );
7628 assert_eq!(
7629 view.selected_display_ranges(cx),
7630 vec![
7631 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
7632 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 1),
7633 DisplayPoint::new(3, 2)..DisplayPoint::new(4, 3),
7634 DisplayPoint::new(5, 0)..DisplayPoint::new(5, 2)
7635 ]
7636 );
7637 });
7638
7639 view.update(cx, |view, cx| {
7640 view.move_line_down(&MoveLineDown, cx);
7641 assert_eq!(
7642 view.display_text(cx),
7643 "ccc…eeee\nfffff\naa…bbb\nggggg\n…i\njjjjj"
7644 );
7645 assert_eq!(
7646 view.selected_display_ranges(cx),
7647 vec![
7648 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
7649 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 1),
7650 DisplayPoint::new(3, 2)..DisplayPoint::new(4, 3),
7651 DisplayPoint::new(5, 0)..DisplayPoint::new(5, 2)
7652 ]
7653 );
7654 });
7655
7656 view.update(cx, |view, cx| {
7657 view.move_line_up(&MoveLineUp, cx);
7658 assert_eq!(
7659 view.display_text(cx),
7660 "ccc…eeee\naa…bbb\nggggg\n…i\njjjjj\nfffff"
7661 );
7662 assert_eq!(
7663 view.selected_display_ranges(cx),
7664 vec![
7665 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
7666 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
7667 DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3),
7668 DisplayPoint::new(4, 0)..DisplayPoint::new(4, 2)
7669 ]
7670 );
7671 });
7672 }
7673
7674 #[gpui::test]
7675 fn test_move_line_up_down_with_blocks(cx: &mut gpui::MutableAppContext) {
7676 populate_settings(cx);
7677 let buffer = MultiBuffer::build_simple(&sample_text(10, 5, 'a'), cx);
7678 let snapshot = buffer.read(cx).snapshot(cx);
7679 let (_, editor) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
7680 editor.update(cx, |editor, cx| {
7681 editor.insert_blocks(
7682 [BlockProperties {
7683 position: snapshot.anchor_after(Point::new(2, 0)),
7684 disposition: BlockDisposition::Below,
7685 height: 1,
7686 render: Arc::new(|_| Empty::new().boxed()),
7687 }],
7688 cx,
7689 );
7690 editor.select_ranges([Point::new(2, 0)..Point::new(2, 0)], None, cx);
7691 editor.move_line_down(&MoveLineDown, cx);
7692 });
7693 }
7694
7695 #[gpui::test]
7696 fn test_clipboard(cx: &mut gpui::MutableAppContext) {
7697 populate_settings(cx);
7698 let buffer = MultiBuffer::build_simple("one✅ two three four five six ", cx);
7699 let view = cx
7700 .add_window(Default::default(), |cx| build_editor(buffer.clone(), cx))
7701 .1;
7702
7703 // Cut with three selections. Clipboard text is divided into three slices.
7704 view.update(cx, |view, cx| {
7705 view.select_ranges(vec![0..7, 11..17, 22..27], None, cx);
7706 view.cut(&Cut, cx);
7707 assert_eq!(view.display_text(cx), "two four six ");
7708 });
7709
7710 // Paste with three cursors. Each cursor pastes one slice of the clipboard text.
7711 view.update(cx, |view, cx| {
7712 view.select_ranges(vec![4..4, 9..9, 13..13], None, cx);
7713 view.paste(&Paste, cx);
7714 assert_eq!(view.display_text(cx), "two one✅ four three six five ");
7715 assert_eq!(
7716 view.selected_display_ranges(cx),
7717 &[
7718 DisplayPoint::new(0, 11)..DisplayPoint::new(0, 11),
7719 DisplayPoint::new(0, 22)..DisplayPoint::new(0, 22),
7720 DisplayPoint::new(0, 31)..DisplayPoint::new(0, 31)
7721 ]
7722 );
7723 });
7724
7725 // Paste again but with only two cursors. Since the number of cursors doesn't
7726 // match the number of slices in the clipboard, the entire clipboard text
7727 // is pasted at each cursor.
7728 view.update(cx, |view, cx| {
7729 view.select_ranges(vec![0..0, 31..31], None, cx);
7730 view.handle_input(&Input("( ".into()), cx);
7731 view.paste(&Paste, cx);
7732 view.handle_input(&Input(") ".into()), cx);
7733 assert_eq!(
7734 view.display_text(cx),
7735 "( one✅ three five ) two one✅ four three six five ( one✅ three five ) "
7736 );
7737 });
7738
7739 view.update(cx, |view, cx| {
7740 view.select_ranges(vec![0..0], None, cx);
7741 view.handle_input(&Input("123\n4567\n89\n".into()), cx);
7742 assert_eq!(
7743 view.display_text(cx),
7744 "123\n4567\n89\n( one✅ three five ) two one✅ four three six five ( one✅ three five ) "
7745 );
7746 });
7747
7748 // Cut with three selections, one of which is full-line.
7749 view.update(cx, |view, cx| {
7750 view.select_display_ranges(
7751 &[
7752 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 2),
7753 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
7754 DisplayPoint::new(2, 0)..DisplayPoint::new(2, 1),
7755 ],
7756 cx,
7757 );
7758 view.cut(&Cut, cx);
7759 assert_eq!(
7760 view.display_text(cx),
7761 "13\n9\n( one✅ three five ) two one✅ four three six five ( one✅ three five ) "
7762 );
7763 });
7764
7765 // Paste with three selections, noticing how the copied selection that was full-line
7766 // gets inserted before the second cursor.
7767 view.update(cx, |view, cx| {
7768 view.select_display_ranges(
7769 &[
7770 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
7771 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
7772 DisplayPoint::new(2, 2)..DisplayPoint::new(2, 3),
7773 ],
7774 cx,
7775 );
7776 view.paste(&Paste, cx);
7777 assert_eq!(
7778 view.display_text(cx),
7779 "123\n4567\n9\n( 8ne✅ three five ) two one✅ four three six five ( one✅ three five ) "
7780 );
7781 assert_eq!(
7782 view.selected_display_ranges(cx),
7783 &[
7784 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
7785 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
7786 DisplayPoint::new(3, 3)..DisplayPoint::new(3, 3),
7787 ]
7788 );
7789 });
7790
7791 // Copy with a single cursor only, which writes the whole line into the clipboard.
7792 view.update(cx, |view, cx| {
7793 view.select_display_ranges(&[DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1)], cx);
7794 view.copy(&Copy, cx);
7795 });
7796
7797 // Paste with three selections, noticing how the copied full-line selection is inserted
7798 // before the empty selections but replaces the selection that is non-empty.
7799 view.update(cx, |view, cx| {
7800 view.select_display_ranges(
7801 &[
7802 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
7803 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 2),
7804 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
7805 ],
7806 cx,
7807 );
7808 view.paste(&Paste, cx);
7809 assert_eq!(
7810 view.display_text(cx),
7811 "123\n123\n123\n67\n123\n9\n( 8ne✅ three five ) two one✅ four three six five ( one✅ three five ) "
7812 );
7813 assert_eq!(
7814 view.selected_display_ranges(cx),
7815 &[
7816 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
7817 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
7818 DisplayPoint::new(5, 1)..DisplayPoint::new(5, 1),
7819 ]
7820 );
7821 });
7822 }
7823
7824 #[gpui::test]
7825 fn test_select_all(cx: &mut gpui::MutableAppContext) {
7826 populate_settings(cx);
7827 let buffer = MultiBuffer::build_simple("abc\nde\nfgh", cx);
7828 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
7829 view.update(cx, |view, cx| {
7830 view.select_all(&SelectAll, cx);
7831 assert_eq!(
7832 view.selected_display_ranges(cx),
7833 &[DisplayPoint::new(0, 0)..DisplayPoint::new(2, 3)]
7834 );
7835 });
7836 }
7837
7838 #[gpui::test]
7839 fn test_select_line(cx: &mut gpui::MutableAppContext) {
7840 populate_settings(cx);
7841 let buffer = MultiBuffer::build_simple(&sample_text(6, 5, 'a'), cx);
7842 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
7843 view.update(cx, |view, cx| {
7844 view.select_display_ranges(
7845 &[
7846 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
7847 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
7848 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
7849 DisplayPoint::new(4, 2)..DisplayPoint::new(4, 2),
7850 ],
7851 cx,
7852 );
7853 view.select_line(&SelectLine, cx);
7854 assert_eq!(
7855 view.selected_display_ranges(cx),
7856 vec![
7857 DisplayPoint::new(0, 0)..DisplayPoint::new(2, 0),
7858 DisplayPoint::new(4, 0)..DisplayPoint::new(5, 0),
7859 ]
7860 );
7861 });
7862
7863 view.update(cx, |view, cx| {
7864 view.select_line(&SelectLine, cx);
7865 assert_eq!(
7866 view.selected_display_ranges(cx),
7867 vec![
7868 DisplayPoint::new(0, 0)..DisplayPoint::new(3, 0),
7869 DisplayPoint::new(4, 0)..DisplayPoint::new(5, 5),
7870 ]
7871 );
7872 });
7873
7874 view.update(cx, |view, cx| {
7875 view.select_line(&SelectLine, cx);
7876 assert_eq!(
7877 view.selected_display_ranges(cx),
7878 vec![DisplayPoint::new(0, 0)..DisplayPoint::new(5, 5)]
7879 );
7880 });
7881 }
7882
7883 #[gpui::test]
7884 fn test_split_selection_into_lines(cx: &mut gpui::MutableAppContext) {
7885 populate_settings(cx);
7886 let buffer = MultiBuffer::build_simple(&sample_text(9, 5, 'a'), cx);
7887 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
7888 view.update(cx, |view, cx| {
7889 view.fold_ranges(
7890 vec![
7891 Point::new(0, 2)..Point::new(1, 2),
7892 Point::new(2, 3)..Point::new(4, 1),
7893 Point::new(7, 0)..Point::new(8, 4),
7894 ],
7895 cx,
7896 );
7897 view.select_display_ranges(
7898 &[
7899 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
7900 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
7901 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
7902 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 4),
7903 ],
7904 cx,
7905 );
7906 assert_eq!(view.display_text(cx), "aa…bbb\nccc…eeee\nfffff\nggggg\n…i");
7907 });
7908
7909 view.update(cx, |view, cx| {
7910 view.split_selection_into_lines(&SplitSelectionIntoLines, cx);
7911 assert_eq!(
7912 view.display_text(cx),
7913 "aaaaa\nbbbbb\nccc…eeee\nfffff\nggggg\n…i"
7914 );
7915 assert_eq!(
7916 view.selected_display_ranges(cx),
7917 [
7918 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
7919 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
7920 DisplayPoint::new(2, 0)..DisplayPoint::new(2, 0),
7921 DisplayPoint::new(5, 4)..DisplayPoint::new(5, 4)
7922 ]
7923 );
7924 });
7925
7926 view.update(cx, |view, cx| {
7927 view.select_display_ranges(&[DisplayPoint::new(5, 0)..DisplayPoint::new(0, 1)], cx);
7928 view.split_selection_into_lines(&SplitSelectionIntoLines, cx);
7929 assert_eq!(
7930 view.display_text(cx),
7931 "aaaaa\nbbbbb\nccccc\nddddd\neeeee\nfffff\nggggg\nhhhhh\niiiii"
7932 );
7933 assert_eq!(
7934 view.selected_display_ranges(cx),
7935 [
7936 DisplayPoint::new(0, 5)..DisplayPoint::new(0, 5),
7937 DisplayPoint::new(1, 5)..DisplayPoint::new(1, 5),
7938 DisplayPoint::new(2, 5)..DisplayPoint::new(2, 5),
7939 DisplayPoint::new(3, 5)..DisplayPoint::new(3, 5),
7940 DisplayPoint::new(4, 5)..DisplayPoint::new(4, 5),
7941 DisplayPoint::new(5, 5)..DisplayPoint::new(5, 5),
7942 DisplayPoint::new(6, 5)..DisplayPoint::new(6, 5),
7943 DisplayPoint::new(7, 0)..DisplayPoint::new(7, 0)
7944 ]
7945 );
7946 });
7947 }
7948
7949 #[gpui::test]
7950 fn test_add_selection_above_below(cx: &mut gpui::MutableAppContext) {
7951 populate_settings(cx);
7952 let buffer = MultiBuffer::build_simple("abc\ndefghi\n\njk\nlmno\n", cx);
7953 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
7954
7955 view.update(cx, |view, cx| {
7956 view.select_display_ranges(&[DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)], cx);
7957 });
7958 view.update(cx, |view, cx| {
7959 view.add_selection_above(&AddSelectionAbove, cx);
7960 assert_eq!(
7961 view.selected_display_ranges(cx),
7962 vec![
7963 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
7964 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)
7965 ]
7966 );
7967 });
7968
7969 view.update(cx, |view, cx| {
7970 view.add_selection_above(&AddSelectionAbove, cx);
7971 assert_eq!(
7972 view.selected_display_ranges(cx),
7973 vec![
7974 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
7975 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)
7976 ]
7977 );
7978 });
7979
7980 view.update(cx, |view, cx| {
7981 view.add_selection_below(&AddSelectionBelow, cx);
7982 assert_eq!(
7983 view.selected_display_ranges(cx),
7984 vec![DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)]
7985 );
7986 });
7987
7988 view.update(cx, |view, cx| {
7989 view.add_selection_below(&AddSelectionBelow, cx);
7990 assert_eq!(
7991 view.selected_display_ranges(cx),
7992 vec![
7993 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3),
7994 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 3)
7995 ]
7996 );
7997 });
7998
7999 view.update(cx, |view, cx| {
8000 view.add_selection_below(&AddSelectionBelow, cx);
8001 assert_eq!(
8002 view.selected_display_ranges(cx),
8003 vec![
8004 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3),
8005 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 3)
8006 ]
8007 );
8008 });
8009
8010 view.update(cx, |view, cx| {
8011 view.select_display_ranges(&[DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3)], cx);
8012 });
8013 view.update(cx, |view, cx| {
8014 view.add_selection_below(&AddSelectionBelow, cx);
8015 assert_eq!(
8016 view.selected_display_ranges(cx),
8017 vec![
8018 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
8019 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 3)
8020 ]
8021 );
8022 });
8023
8024 view.update(cx, |view, cx| {
8025 view.add_selection_below(&AddSelectionBelow, cx);
8026 assert_eq!(
8027 view.selected_display_ranges(cx),
8028 vec![
8029 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
8030 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 3)
8031 ]
8032 );
8033 });
8034
8035 view.update(cx, |view, cx| {
8036 view.add_selection_above(&AddSelectionAbove, cx);
8037 assert_eq!(
8038 view.selected_display_ranges(cx),
8039 vec![DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3)]
8040 );
8041 });
8042
8043 view.update(cx, |view, cx| {
8044 view.add_selection_above(&AddSelectionAbove, cx);
8045 assert_eq!(
8046 view.selected_display_ranges(cx),
8047 vec![DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3)]
8048 );
8049 });
8050
8051 view.update(cx, |view, cx| {
8052 view.select_display_ranges(&[DisplayPoint::new(0, 1)..DisplayPoint::new(1, 4)], cx);
8053 view.add_selection_below(&AddSelectionBelow, cx);
8054 assert_eq!(
8055 view.selected_display_ranges(cx),
8056 vec![
8057 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
8058 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 4),
8059 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 2),
8060 ]
8061 );
8062 });
8063
8064 view.update(cx, |view, cx| {
8065 view.add_selection_below(&AddSelectionBelow, cx);
8066 assert_eq!(
8067 view.selected_display_ranges(cx),
8068 vec![
8069 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
8070 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 4),
8071 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 2),
8072 DisplayPoint::new(4, 1)..DisplayPoint::new(4, 4),
8073 ]
8074 );
8075 });
8076
8077 view.update(cx, |view, cx| {
8078 view.add_selection_above(&AddSelectionAbove, cx);
8079 assert_eq!(
8080 view.selected_display_ranges(cx),
8081 vec![
8082 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
8083 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 4),
8084 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 2),
8085 ]
8086 );
8087 });
8088
8089 view.update(cx, |view, cx| {
8090 view.select_display_ranges(&[DisplayPoint::new(4, 3)..DisplayPoint::new(1, 1)], cx);
8091 });
8092 view.update(cx, |view, cx| {
8093 view.add_selection_above(&AddSelectionAbove, cx);
8094 assert_eq!(
8095 view.selected_display_ranges(cx),
8096 vec![
8097 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 1),
8098 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 1),
8099 DisplayPoint::new(3, 2)..DisplayPoint::new(3, 1),
8100 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 1),
8101 ]
8102 );
8103 });
8104
8105 view.update(cx, |view, cx| {
8106 view.add_selection_below(&AddSelectionBelow, cx);
8107 assert_eq!(
8108 view.selected_display_ranges(cx),
8109 vec![
8110 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 1),
8111 DisplayPoint::new(3, 2)..DisplayPoint::new(3, 1),
8112 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 1),
8113 ]
8114 );
8115 });
8116 }
8117
8118 #[gpui::test]
8119 async fn test_select_larger_smaller_syntax_node(cx: &mut gpui::TestAppContext) {
8120 cx.update(populate_settings);
8121 let language = Arc::new(Language::new(
8122 LanguageConfig::default(),
8123 Some(tree_sitter_rust::language()),
8124 ));
8125
8126 let text = r#"
8127 use mod1::mod2::{mod3, mod4};
8128
8129 fn fn_1(param1: bool, param2: &str) {
8130 let var1 = "text";
8131 }
8132 "#
8133 .unindent();
8134
8135 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
8136 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
8137 let (_, view) = cx.add_window(|cx| build_editor(buffer, cx));
8138 view.condition(&cx, |view, cx| !view.buffer.read(cx).is_parsing(cx))
8139 .await;
8140
8141 view.update(cx, |view, cx| {
8142 view.select_display_ranges(
8143 &[
8144 DisplayPoint::new(0, 25)..DisplayPoint::new(0, 25),
8145 DisplayPoint::new(2, 24)..DisplayPoint::new(2, 12),
8146 DisplayPoint::new(3, 18)..DisplayPoint::new(3, 18),
8147 ],
8148 cx,
8149 );
8150 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
8151 });
8152 assert_eq!(
8153 view.update(cx, |view, cx| view.selected_display_ranges(cx)),
8154 &[
8155 DisplayPoint::new(0, 23)..DisplayPoint::new(0, 27),
8156 DisplayPoint::new(2, 35)..DisplayPoint::new(2, 7),
8157 DisplayPoint::new(3, 15)..DisplayPoint::new(3, 21),
8158 ]
8159 );
8160
8161 view.update(cx, |view, cx| {
8162 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
8163 });
8164 assert_eq!(
8165 view.update(cx, |view, cx| view.selected_display_ranges(cx)),
8166 &[
8167 DisplayPoint::new(0, 16)..DisplayPoint::new(0, 28),
8168 DisplayPoint::new(4, 1)..DisplayPoint::new(2, 0),
8169 ]
8170 );
8171
8172 view.update(cx, |view, cx| {
8173 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
8174 });
8175 assert_eq!(
8176 view.update(cx, |view, cx| view.selected_display_ranges(cx)),
8177 &[DisplayPoint::new(5, 0)..DisplayPoint::new(0, 0)]
8178 );
8179
8180 // Trying to expand the selected syntax node one more time has no effect.
8181 view.update(cx, |view, cx| {
8182 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
8183 });
8184 assert_eq!(
8185 view.update(cx, |view, cx| view.selected_display_ranges(cx)),
8186 &[DisplayPoint::new(5, 0)..DisplayPoint::new(0, 0)]
8187 );
8188
8189 view.update(cx, |view, cx| {
8190 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
8191 });
8192 assert_eq!(
8193 view.update(cx, |view, cx| view.selected_display_ranges(cx)),
8194 &[
8195 DisplayPoint::new(0, 16)..DisplayPoint::new(0, 28),
8196 DisplayPoint::new(4, 1)..DisplayPoint::new(2, 0),
8197 ]
8198 );
8199
8200 view.update(cx, |view, cx| {
8201 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
8202 });
8203 assert_eq!(
8204 view.update(cx, |view, cx| view.selected_display_ranges(cx)),
8205 &[
8206 DisplayPoint::new(0, 23)..DisplayPoint::new(0, 27),
8207 DisplayPoint::new(2, 35)..DisplayPoint::new(2, 7),
8208 DisplayPoint::new(3, 15)..DisplayPoint::new(3, 21),
8209 ]
8210 );
8211
8212 view.update(cx, |view, cx| {
8213 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
8214 });
8215 assert_eq!(
8216 view.update(cx, |view, cx| view.selected_display_ranges(cx)),
8217 &[
8218 DisplayPoint::new(0, 25)..DisplayPoint::new(0, 25),
8219 DisplayPoint::new(2, 24)..DisplayPoint::new(2, 12),
8220 DisplayPoint::new(3, 18)..DisplayPoint::new(3, 18),
8221 ]
8222 );
8223
8224 // Trying to shrink the selected syntax node one more time has no effect.
8225 view.update(cx, |view, cx| {
8226 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
8227 });
8228 assert_eq!(
8229 view.update(cx, |view, cx| view.selected_display_ranges(cx)),
8230 &[
8231 DisplayPoint::new(0, 25)..DisplayPoint::new(0, 25),
8232 DisplayPoint::new(2, 24)..DisplayPoint::new(2, 12),
8233 DisplayPoint::new(3, 18)..DisplayPoint::new(3, 18),
8234 ]
8235 );
8236
8237 // Ensure that we keep expanding the selection if the larger selection starts or ends within
8238 // a fold.
8239 view.update(cx, |view, cx| {
8240 view.fold_ranges(
8241 vec![
8242 Point::new(0, 21)..Point::new(0, 24),
8243 Point::new(3, 20)..Point::new(3, 22),
8244 ],
8245 cx,
8246 );
8247 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
8248 });
8249 assert_eq!(
8250 view.update(cx, |view, cx| view.selected_display_ranges(cx)),
8251 &[
8252 DisplayPoint::new(0, 16)..DisplayPoint::new(0, 28),
8253 DisplayPoint::new(2, 35)..DisplayPoint::new(2, 7),
8254 DisplayPoint::new(3, 4)..DisplayPoint::new(3, 23),
8255 ]
8256 );
8257 }
8258
8259 #[gpui::test]
8260 async fn test_autoindent_selections(cx: &mut gpui::TestAppContext) {
8261 cx.update(populate_settings);
8262 let language = Arc::new(
8263 Language::new(
8264 LanguageConfig {
8265 brackets: vec![
8266 BracketPair {
8267 start: "{".to_string(),
8268 end: "}".to_string(),
8269 close: false,
8270 newline: true,
8271 },
8272 BracketPair {
8273 start: "(".to_string(),
8274 end: ")".to_string(),
8275 close: false,
8276 newline: true,
8277 },
8278 ],
8279 ..Default::default()
8280 },
8281 Some(tree_sitter_rust::language()),
8282 )
8283 .with_indents_query(
8284 r#"
8285 (_ "(" ")" @end) @indent
8286 (_ "{" "}" @end) @indent
8287 "#,
8288 )
8289 .unwrap(),
8290 );
8291
8292 let text = "fn a() {}";
8293
8294 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
8295 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
8296 let (_, editor) = cx.add_window(|cx| build_editor(buffer, cx));
8297 editor
8298 .condition(&cx, |editor, cx| !editor.buffer.read(cx).is_parsing(cx))
8299 .await;
8300
8301 editor.update(cx, |editor, cx| {
8302 editor.select_ranges([5..5, 8..8, 9..9], None, cx);
8303 editor.newline(&Newline, cx);
8304 assert_eq!(editor.text(cx), "fn a(\n \n) {\n \n}\n");
8305 assert_eq!(
8306 editor.selected_ranges(cx),
8307 &[
8308 Point::new(1, 4)..Point::new(1, 4),
8309 Point::new(3, 4)..Point::new(3, 4),
8310 Point::new(5, 0)..Point::new(5, 0)
8311 ]
8312 );
8313 });
8314 }
8315
8316 #[gpui::test]
8317 async fn test_autoclose_pairs(cx: &mut gpui::TestAppContext) {
8318 cx.update(populate_settings);
8319 let language = Arc::new(Language::new(
8320 LanguageConfig {
8321 brackets: vec![
8322 BracketPair {
8323 start: "{".to_string(),
8324 end: "}".to_string(),
8325 close: true,
8326 newline: true,
8327 },
8328 BracketPair {
8329 start: "/*".to_string(),
8330 end: " */".to_string(),
8331 close: true,
8332 newline: true,
8333 },
8334 ],
8335 autoclose_before: "})]".to_string(),
8336 ..Default::default()
8337 },
8338 Some(tree_sitter_rust::language()),
8339 ));
8340
8341 let text = r#"
8342 a
8343
8344 /
8345
8346 "#
8347 .unindent();
8348
8349 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
8350 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
8351 let (_, view) = cx.add_window(|cx| build_editor(buffer, cx));
8352 view.condition(&cx, |view, cx| !view.buffer.read(cx).is_parsing(cx))
8353 .await;
8354
8355 view.update(cx, |view, cx| {
8356 view.select_display_ranges(
8357 &[
8358 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
8359 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
8360 ],
8361 cx,
8362 );
8363
8364 view.handle_input(&Input("{".to_string()), cx);
8365 view.handle_input(&Input("{".to_string()), cx);
8366 view.handle_input(&Input("{".to_string()), cx);
8367 assert_eq!(
8368 view.text(cx),
8369 "
8370 {{{}}}
8371 {{{}}}
8372 /
8373
8374 "
8375 .unindent()
8376 );
8377
8378 view.move_right(&MoveRight, cx);
8379 view.handle_input(&Input("}".to_string()), cx);
8380 view.handle_input(&Input("}".to_string()), cx);
8381 view.handle_input(&Input("}".to_string()), cx);
8382 assert_eq!(
8383 view.text(cx),
8384 "
8385 {{{}}}}
8386 {{{}}}}
8387 /
8388
8389 "
8390 .unindent()
8391 );
8392
8393 view.undo(&Undo, cx);
8394 view.handle_input(&Input("/".to_string()), cx);
8395 view.handle_input(&Input("*".to_string()), cx);
8396 assert_eq!(
8397 view.text(cx),
8398 "
8399 /* */
8400 /* */
8401 /
8402
8403 "
8404 .unindent()
8405 );
8406
8407 view.undo(&Undo, cx);
8408 view.select_display_ranges(
8409 &[
8410 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
8411 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
8412 ],
8413 cx,
8414 );
8415 view.handle_input(&Input("*".to_string()), cx);
8416 assert_eq!(
8417 view.text(cx),
8418 "
8419 a
8420
8421 /*
8422 *
8423 "
8424 .unindent()
8425 );
8426
8427 // Don't autoclose if the next character isn't whitespace and isn't
8428 // listed in the language's "autoclose_before" section.
8429 view.finalize_last_transaction(cx);
8430 view.select_display_ranges(&[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)], cx);
8431 view.handle_input(&Input("{".to_string()), cx);
8432 assert_eq!(
8433 view.text(cx),
8434 "
8435 {a
8436
8437 /*
8438 *
8439 "
8440 .unindent()
8441 );
8442
8443 view.undo(&Undo, cx);
8444 view.select_display_ranges(&[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1)], cx);
8445 view.handle_input(&Input("{".to_string()), cx);
8446 assert_eq!(
8447 view.text(cx),
8448 "
8449 {a}
8450
8451 /*
8452 *
8453 "
8454 .unindent()
8455 );
8456 assert_eq!(
8457 view.selected_display_ranges(cx),
8458 [DisplayPoint::new(0, 1)..DisplayPoint::new(0, 2)]
8459 );
8460 });
8461 }
8462
8463 #[gpui::test]
8464 async fn test_snippets(cx: &mut gpui::TestAppContext) {
8465 cx.update(populate_settings);
8466
8467 let text = "
8468 a. b
8469 a. b
8470 a. b
8471 "
8472 .unindent();
8473 let buffer = cx.update(|cx| MultiBuffer::build_simple(&text, cx));
8474 let (_, editor) = cx.add_window(|cx| build_editor(buffer, cx));
8475
8476 editor.update(cx, |editor, cx| {
8477 let buffer = &editor.snapshot(cx).buffer_snapshot;
8478 let snippet = Snippet::parse("f(${1:one}, ${2:two}, ${1:three})$0").unwrap();
8479 let insertion_ranges = [
8480 Point::new(0, 2).to_offset(buffer)..Point::new(0, 2).to_offset(buffer),
8481 Point::new(1, 2).to_offset(buffer)..Point::new(1, 2).to_offset(buffer),
8482 Point::new(2, 2).to_offset(buffer)..Point::new(2, 2).to_offset(buffer),
8483 ];
8484
8485 editor
8486 .insert_snippet(&insertion_ranges, snippet, cx)
8487 .unwrap();
8488 assert_eq!(
8489 editor.text(cx),
8490 "
8491 a.f(one, two, three) b
8492 a.f(one, two, three) b
8493 a.f(one, two, three) b
8494 "
8495 .unindent()
8496 );
8497 assert_eq!(
8498 editor.selected_ranges::<Point>(cx),
8499 &[
8500 Point::new(0, 4)..Point::new(0, 7),
8501 Point::new(0, 14)..Point::new(0, 19),
8502 Point::new(1, 4)..Point::new(1, 7),
8503 Point::new(1, 14)..Point::new(1, 19),
8504 Point::new(2, 4)..Point::new(2, 7),
8505 Point::new(2, 14)..Point::new(2, 19),
8506 ]
8507 );
8508
8509 // Can't move earlier than the first tab stop
8510 editor.move_to_prev_snippet_tabstop(cx);
8511 assert_eq!(
8512 editor.selected_ranges::<Point>(cx),
8513 &[
8514 Point::new(0, 4)..Point::new(0, 7),
8515 Point::new(0, 14)..Point::new(0, 19),
8516 Point::new(1, 4)..Point::new(1, 7),
8517 Point::new(1, 14)..Point::new(1, 19),
8518 Point::new(2, 4)..Point::new(2, 7),
8519 Point::new(2, 14)..Point::new(2, 19),
8520 ]
8521 );
8522
8523 assert!(editor.move_to_next_snippet_tabstop(cx));
8524 assert_eq!(
8525 editor.selected_ranges::<Point>(cx),
8526 &[
8527 Point::new(0, 9)..Point::new(0, 12),
8528 Point::new(1, 9)..Point::new(1, 12),
8529 Point::new(2, 9)..Point::new(2, 12)
8530 ]
8531 );
8532
8533 editor.move_to_prev_snippet_tabstop(cx);
8534 assert_eq!(
8535 editor.selected_ranges::<Point>(cx),
8536 &[
8537 Point::new(0, 4)..Point::new(0, 7),
8538 Point::new(0, 14)..Point::new(0, 19),
8539 Point::new(1, 4)..Point::new(1, 7),
8540 Point::new(1, 14)..Point::new(1, 19),
8541 Point::new(2, 4)..Point::new(2, 7),
8542 Point::new(2, 14)..Point::new(2, 19),
8543 ]
8544 );
8545
8546 assert!(editor.move_to_next_snippet_tabstop(cx));
8547 assert!(editor.move_to_next_snippet_tabstop(cx));
8548 assert_eq!(
8549 editor.selected_ranges::<Point>(cx),
8550 &[
8551 Point::new(0, 20)..Point::new(0, 20),
8552 Point::new(1, 20)..Point::new(1, 20),
8553 Point::new(2, 20)..Point::new(2, 20)
8554 ]
8555 );
8556
8557 // As soon as the last tab stop is reached, snippet state is gone
8558 editor.move_to_prev_snippet_tabstop(cx);
8559 assert_eq!(
8560 editor.selected_ranges::<Point>(cx),
8561 &[
8562 Point::new(0, 20)..Point::new(0, 20),
8563 Point::new(1, 20)..Point::new(1, 20),
8564 Point::new(2, 20)..Point::new(2, 20)
8565 ]
8566 );
8567 });
8568 }
8569
8570 #[gpui::test]
8571 async fn test_completion(cx: &mut gpui::TestAppContext) {
8572 cx.update(populate_settings);
8573
8574 let (mut language_server_config, mut fake_servers) = LanguageServerConfig::fake();
8575 language_server_config.set_fake_capabilities(lsp::ServerCapabilities {
8576 completion_provider: Some(lsp::CompletionOptions {
8577 trigger_characters: Some(vec![".".to_string(), ":".to_string()]),
8578 ..Default::default()
8579 }),
8580 ..Default::default()
8581 });
8582 let language = Arc::new(Language::new(
8583 LanguageConfig {
8584 name: "Rust".into(),
8585 path_suffixes: vec!["rs".to_string()],
8586 language_server: Some(language_server_config),
8587 ..Default::default()
8588 },
8589 Some(tree_sitter_rust::language()),
8590 ));
8591
8592 let text = "
8593 one
8594 two
8595 three
8596 "
8597 .unindent();
8598
8599 let fs = FakeFs::new(cx.background().clone());
8600 fs.insert_file("/file.rs", text).await;
8601
8602 let project = Project::test(fs, cx);
8603 project.update(cx, |project, _| project.languages().add(language));
8604
8605 let worktree_id = project
8606 .update(cx, |project, cx| {
8607 project.find_or_create_local_worktree("/file.rs", true, cx)
8608 })
8609 .await
8610 .unwrap()
8611 .0
8612 .read_with(cx, |tree, _| tree.id());
8613 let buffer = project
8614 .update(cx, |project, cx| project.open_buffer((worktree_id, ""), cx))
8615 .await
8616 .unwrap();
8617 let mut fake_server = fake_servers.next().await.unwrap();
8618
8619 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
8620 let (_, editor) = cx.add_window(|cx| build_editor(buffer, cx));
8621
8622 editor.update(cx, |editor, cx| {
8623 editor.project = Some(project);
8624 editor.select_ranges([Point::new(0, 3)..Point::new(0, 3)], None, cx);
8625 editor.handle_input(&Input(".".to_string()), cx);
8626 });
8627
8628 handle_completion_request(
8629 &mut fake_server,
8630 "/file.rs",
8631 Point::new(0, 4),
8632 vec![
8633 (Point::new(0, 4)..Point::new(0, 4), "first_completion"),
8634 (Point::new(0, 4)..Point::new(0, 4), "second_completion"),
8635 ],
8636 )
8637 .await;
8638 editor
8639 .condition(&cx, |editor, _| editor.context_menu_visible())
8640 .await;
8641
8642 let apply_additional_edits = editor.update(cx, |editor, cx| {
8643 editor.move_down(&MoveDown, cx);
8644 let apply_additional_edits = editor
8645 .confirm_completion(&ConfirmCompletion(None), cx)
8646 .unwrap();
8647 assert_eq!(
8648 editor.text(cx),
8649 "
8650 one.second_completion
8651 two
8652 three
8653 "
8654 .unindent()
8655 );
8656 apply_additional_edits
8657 });
8658
8659 handle_resolve_completion_request(
8660 &mut fake_server,
8661 Some((Point::new(2, 5)..Point::new(2, 5), "\nadditional edit")),
8662 )
8663 .await;
8664 apply_additional_edits.await.unwrap();
8665 assert_eq!(
8666 editor.read_with(cx, |editor, cx| editor.text(cx)),
8667 "
8668 one.second_completion
8669 two
8670 three
8671 additional edit
8672 "
8673 .unindent()
8674 );
8675
8676 editor.update(cx, |editor, cx| {
8677 editor.select_ranges(
8678 [
8679 Point::new(1, 3)..Point::new(1, 3),
8680 Point::new(2, 5)..Point::new(2, 5),
8681 ],
8682 None,
8683 cx,
8684 );
8685
8686 editor.handle_input(&Input(" ".to_string()), cx);
8687 assert!(editor.context_menu.is_none());
8688 editor.handle_input(&Input("s".to_string()), cx);
8689 assert!(editor.context_menu.is_none());
8690 });
8691
8692 handle_completion_request(
8693 &mut fake_server,
8694 "/file.rs",
8695 Point::new(2, 7),
8696 vec![
8697 (Point::new(2, 6)..Point::new(2, 7), "fourth_completion"),
8698 (Point::new(2, 6)..Point::new(2, 7), "fifth_completion"),
8699 (Point::new(2, 6)..Point::new(2, 7), "sixth_completion"),
8700 ],
8701 )
8702 .await;
8703 editor
8704 .condition(&cx, |editor, _| editor.context_menu_visible())
8705 .await;
8706
8707 editor.update(cx, |editor, cx| {
8708 editor.handle_input(&Input("i".to_string()), cx);
8709 });
8710
8711 handle_completion_request(
8712 &mut fake_server,
8713 "/file.rs",
8714 Point::new(2, 8),
8715 vec![
8716 (Point::new(2, 6)..Point::new(2, 8), "fourth_completion"),
8717 (Point::new(2, 6)..Point::new(2, 8), "fifth_completion"),
8718 (Point::new(2, 6)..Point::new(2, 8), "sixth_completion"),
8719 ],
8720 )
8721 .await;
8722 editor
8723 .condition(&cx, |editor, _| editor.context_menu_visible())
8724 .await;
8725
8726 let apply_additional_edits = editor.update(cx, |editor, cx| {
8727 let apply_additional_edits = editor
8728 .confirm_completion(&ConfirmCompletion(None), cx)
8729 .unwrap();
8730 assert_eq!(
8731 editor.text(cx),
8732 "
8733 one.second_completion
8734 two sixth_completion
8735 three sixth_completion
8736 additional edit
8737 "
8738 .unindent()
8739 );
8740 apply_additional_edits
8741 });
8742 handle_resolve_completion_request(&mut fake_server, None).await;
8743 apply_additional_edits.await.unwrap();
8744
8745 async fn handle_completion_request(
8746 fake: &mut FakeLanguageServer,
8747 path: &'static str,
8748 position: Point,
8749 completions: Vec<(Range<Point>, &'static str)>,
8750 ) {
8751 fake.handle_request::<lsp::request::Completion, _>(move |params, _| {
8752 assert_eq!(
8753 params.text_document_position.text_document.uri,
8754 lsp::Url::from_file_path(path).unwrap()
8755 );
8756 assert_eq!(
8757 params.text_document_position.position,
8758 lsp::Position::new(position.row, position.column)
8759 );
8760 Some(lsp::CompletionResponse::Array(
8761 completions
8762 .iter()
8763 .map(|(range, new_text)| lsp::CompletionItem {
8764 label: new_text.to_string(),
8765 text_edit: Some(lsp::CompletionTextEdit::Edit(lsp::TextEdit {
8766 range: lsp::Range::new(
8767 lsp::Position::new(range.start.row, range.start.column),
8768 lsp::Position::new(range.start.row, range.start.column),
8769 ),
8770 new_text: new_text.to_string(),
8771 })),
8772 ..Default::default()
8773 })
8774 .collect(),
8775 ))
8776 })
8777 .next()
8778 .await;
8779 }
8780
8781 async fn handle_resolve_completion_request(
8782 fake: &mut FakeLanguageServer,
8783 edit: Option<(Range<Point>, &'static str)>,
8784 ) {
8785 fake.handle_request::<lsp::request::ResolveCompletionItem, _>(move |_, _| {
8786 lsp::CompletionItem {
8787 additional_text_edits: edit.clone().map(|(range, new_text)| {
8788 vec![lsp::TextEdit::new(
8789 lsp::Range::new(
8790 lsp::Position::new(range.start.row, range.start.column),
8791 lsp::Position::new(range.end.row, range.end.column),
8792 ),
8793 new_text.to_string(),
8794 )]
8795 }),
8796 ..Default::default()
8797 }
8798 })
8799 .next()
8800 .await;
8801 }
8802 }
8803
8804 #[gpui::test]
8805 async fn test_toggle_comment(cx: &mut gpui::TestAppContext) {
8806 cx.update(populate_settings);
8807 let language = Arc::new(Language::new(
8808 LanguageConfig {
8809 line_comment: Some("// ".to_string()),
8810 ..Default::default()
8811 },
8812 Some(tree_sitter_rust::language()),
8813 ));
8814
8815 let text = "
8816 fn a() {
8817 //b();
8818 // c();
8819 // d();
8820 }
8821 "
8822 .unindent();
8823
8824 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
8825 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
8826 let (_, view) = cx.add_window(|cx| build_editor(buffer, cx));
8827
8828 view.update(cx, |editor, cx| {
8829 // If multiple selections intersect a line, the line is only
8830 // toggled once.
8831 editor.select_display_ranges(
8832 &[
8833 DisplayPoint::new(1, 3)..DisplayPoint::new(2, 3),
8834 DisplayPoint::new(3, 5)..DisplayPoint::new(3, 6),
8835 ],
8836 cx,
8837 );
8838 editor.toggle_comments(&ToggleComments, cx);
8839 assert_eq!(
8840 editor.text(cx),
8841 "
8842 fn a() {
8843 b();
8844 c();
8845 d();
8846 }
8847 "
8848 .unindent()
8849 );
8850
8851 // The comment prefix is inserted at the same column for every line
8852 // in a selection.
8853 editor.select_display_ranges(&[DisplayPoint::new(1, 3)..DisplayPoint::new(3, 6)], cx);
8854 editor.toggle_comments(&ToggleComments, cx);
8855 assert_eq!(
8856 editor.text(cx),
8857 "
8858 fn a() {
8859 // b();
8860 // c();
8861 // d();
8862 }
8863 "
8864 .unindent()
8865 );
8866
8867 // If a selection ends at the beginning of a line, that line is not toggled.
8868 editor.select_display_ranges(&[DisplayPoint::new(2, 0)..DisplayPoint::new(3, 0)], cx);
8869 editor.toggle_comments(&ToggleComments, cx);
8870 assert_eq!(
8871 editor.text(cx),
8872 "
8873 fn a() {
8874 // b();
8875 c();
8876 // d();
8877 }
8878 "
8879 .unindent()
8880 );
8881 });
8882 }
8883
8884 #[gpui::test]
8885 fn test_editing_disjoint_excerpts(cx: &mut gpui::MutableAppContext) {
8886 populate_settings(cx);
8887 let buffer = cx.add_model(|cx| Buffer::new(0, sample_text(3, 4, 'a'), cx));
8888 let multibuffer = cx.add_model(|cx| {
8889 let mut multibuffer = MultiBuffer::new(0);
8890 multibuffer.push_excerpts(
8891 buffer.clone(),
8892 [
8893 Point::new(0, 0)..Point::new(0, 4),
8894 Point::new(1, 0)..Point::new(1, 4),
8895 ],
8896 cx,
8897 );
8898 multibuffer
8899 });
8900
8901 assert_eq!(multibuffer.read(cx).read(cx).text(), "aaaa\nbbbb");
8902
8903 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(multibuffer, cx));
8904 view.update(cx, |view, cx| {
8905 assert_eq!(view.text(cx), "aaaa\nbbbb");
8906 view.select_ranges(
8907 [
8908 Point::new(0, 0)..Point::new(0, 0),
8909 Point::new(1, 0)..Point::new(1, 0),
8910 ],
8911 None,
8912 cx,
8913 );
8914
8915 view.handle_input(&Input("X".to_string()), cx);
8916 assert_eq!(view.text(cx), "Xaaaa\nXbbbb");
8917 assert_eq!(
8918 view.selected_ranges(cx),
8919 [
8920 Point::new(0, 1)..Point::new(0, 1),
8921 Point::new(1, 1)..Point::new(1, 1),
8922 ]
8923 )
8924 });
8925 }
8926
8927 #[gpui::test]
8928 fn test_editing_overlapping_excerpts(cx: &mut gpui::MutableAppContext) {
8929 populate_settings(cx);
8930 let buffer = cx.add_model(|cx| Buffer::new(0, sample_text(3, 4, 'a'), cx));
8931 let multibuffer = cx.add_model(|cx| {
8932 let mut multibuffer = MultiBuffer::new(0);
8933 multibuffer.push_excerpts(
8934 buffer,
8935 [
8936 Point::new(0, 0)..Point::new(1, 4),
8937 Point::new(1, 0)..Point::new(2, 4),
8938 ],
8939 cx,
8940 );
8941 multibuffer
8942 });
8943
8944 assert_eq!(
8945 multibuffer.read(cx).read(cx).text(),
8946 "aaaa\nbbbb\nbbbb\ncccc"
8947 );
8948
8949 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(multibuffer, cx));
8950 view.update(cx, |view, cx| {
8951 view.select_ranges(
8952 [
8953 Point::new(1, 1)..Point::new(1, 1),
8954 Point::new(2, 3)..Point::new(2, 3),
8955 ],
8956 None,
8957 cx,
8958 );
8959
8960 view.handle_input(&Input("X".to_string()), cx);
8961 assert_eq!(view.text(cx), "aaaa\nbXbbXb\nbXbbXb\ncccc");
8962 assert_eq!(
8963 view.selected_ranges(cx),
8964 [
8965 Point::new(1, 2)..Point::new(1, 2),
8966 Point::new(2, 5)..Point::new(2, 5),
8967 ]
8968 );
8969
8970 view.newline(&Newline, cx);
8971 assert_eq!(view.text(cx), "aaaa\nbX\nbbX\nb\nbX\nbbX\nb\ncccc");
8972 assert_eq!(
8973 view.selected_ranges(cx),
8974 [
8975 Point::new(2, 0)..Point::new(2, 0),
8976 Point::new(6, 0)..Point::new(6, 0),
8977 ]
8978 );
8979 });
8980 }
8981
8982 #[gpui::test]
8983 fn test_refresh_selections(cx: &mut gpui::MutableAppContext) {
8984 populate_settings(cx);
8985 let buffer = cx.add_model(|cx| Buffer::new(0, sample_text(3, 4, 'a'), cx));
8986 let mut excerpt1_id = None;
8987 let multibuffer = cx.add_model(|cx| {
8988 let mut multibuffer = MultiBuffer::new(0);
8989 excerpt1_id = multibuffer
8990 .push_excerpts(
8991 buffer.clone(),
8992 [
8993 Point::new(0, 0)..Point::new(1, 4),
8994 Point::new(1, 0)..Point::new(2, 4),
8995 ],
8996 cx,
8997 )
8998 .into_iter()
8999 .next();
9000 multibuffer
9001 });
9002 assert_eq!(
9003 multibuffer.read(cx).read(cx).text(),
9004 "aaaa\nbbbb\nbbbb\ncccc"
9005 );
9006 let (_, editor) = cx.add_window(Default::default(), |cx| {
9007 let mut editor = build_editor(multibuffer.clone(), cx);
9008 let snapshot = editor.snapshot(cx);
9009 editor.select_ranges([Point::new(1, 3)..Point::new(1, 3)], None, cx);
9010 editor.begin_selection(Point::new(2, 1).to_display_point(&snapshot), true, 1, cx);
9011 assert_eq!(
9012 editor.selected_ranges(cx),
9013 [
9014 Point::new(1, 3)..Point::new(1, 3),
9015 Point::new(2, 1)..Point::new(2, 1),
9016 ]
9017 );
9018 editor
9019 });
9020
9021 // Refreshing selections is a no-op when excerpts haven't changed.
9022 editor.update(cx, |editor, cx| {
9023 editor.refresh_selections(cx);
9024 assert_eq!(
9025 editor.selected_ranges(cx),
9026 [
9027 Point::new(1, 3)..Point::new(1, 3),
9028 Point::new(2, 1)..Point::new(2, 1),
9029 ]
9030 );
9031 });
9032
9033 multibuffer.update(cx, |multibuffer, cx| {
9034 multibuffer.remove_excerpts([&excerpt1_id.unwrap()], cx);
9035 });
9036 editor.update(cx, |editor, cx| {
9037 // Removing an excerpt causes the first selection to become degenerate.
9038 assert_eq!(
9039 editor.selected_ranges(cx),
9040 [
9041 Point::new(0, 0)..Point::new(0, 0),
9042 Point::new(0, 1)..Point::new(0, 1)
9043 ]
9044 );
9045
9046 // Refreshing selections will relocate the first selection to the original buffer
9047 // location.
9048 editor.refresh_selections(cx);
9049 assert_eq!(
9050 editor.selected_ranges(cx),
9051 [
9052 Point::new(0, 1)..Point::new(0, 1),
9053 Point::new(0, 3)..Point::new(0, 3)
9054 ]
9055 );
9056 assert!(editor.pending_selection.is_some());
9057 });
9058 }
9059
9060 #[gpui::test]
9061 fn test_refresh_selections_while_selecting_with_mouse(cx: &mut gpui::MutableAppContext) {
9062 populate_settings(cx);
9063 let buffer = cx.add_model(|cx| Buffer::new(0, sample_text(3, 4, 'a'), cx));
9064 let mut excerpt1_id = None;
9065 let multibuffer = cx.add_model(|cx| {
9066 let mut multibuffer = MultiBuffer::new(0);
9067 excerpt1_id = multibuffer
9068 .push_excerpts(
9069 buffer.clone(),
9070 [
9071 Point::new(0, 0)..Point::new(1, 4),
9072 Point::new(1, 0)..Point::new(2, 4),
9073 ],
9074 cx,
9075 )
9076 .into_iter()
9077 .next();
9078 multibuffer
9079 });
9080 assert_eq!(
9081 multibuffer.read(cx).read(cx).text(),
9082 "aaaa\nbbbb\nbbbb\ncccc"
9083 );
9084 let (_, editor) = cx.add_window(Default::default(), |cx| {
9085 let mut editor = build_editor(multibuffer.clone(), cx);
9086 let snapshot = editor.snapshot(cx);
9087 editor.begin_selection(Point::new(1, 3).to_display_point(&snapshot), false, 1, cx);
9088 assert_eq!(
9089 editor.selected_ranges(cx),
9090 [Point::new(1, 3)..Point::new(1, 3)]
9091 );
9092 editor
9093 });
9094
9095 multibuffer.update(cx, |multibuffer, cx| {
9096 multibuffer.remove_excerpts([&excerpt1_id.unwrap()], cx);
9097 });
9098 editor.update(cx, |editor, cx| {
9099 assert_eq!(
9100 editor.selected_ranges(cx),
9101 [Point::new(0, 0)..Point::new(0, 0)]
9102 );
9103
9104 // Ensure we don't panic when selections are refreshed and that the pending selection is finalized.
9105 editor.refresh_selections(cx);
9106 assert_eq!(
9107 editor.selected_ranges(cx),
9108 [Point::new(0, 3)..Point::new(0, 3)]
9109 );
9110 assert!(editor.pending_selection.is_some());
9111 });
9112 }
9113
9114 #[gpui::test]
9115 async fn test_extra_newline_insertion(cx: &mut gpui::TestAppContext) {
9116 cx.update(populate_settings);
9117 let language = Arc::new(Language::new(
9118 LanguageConfig {
9119 brackets: vec![
9120 BracketPair {
9121 start: "{".to_string(),
9122 end: "}".to_string(),
9123 close: true,
9124 newline: true,
9125 },
9126 BracketPair {
9127 start: "/* ".to_string(),
9128 end: " */".to_string(),
9129 close: true,
9130 newline: true,
9131 },
9132 ],
9133 ..Default::default()
9134 },
9135 Some(tree_sitter_rust::language()),
9136 ));
9137
9138 let text = concat!(
9139 "{ }\n", // Suppress rustfmt
9140 " x\n", //
9141 " /* */\n", //
9142 "x\n", //
9143 "{{} }\n", //
9144 );
9145
9146 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
9147 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
9148 let (_, view) = cx.add_window(|cx| build_editor(buffer, cx));
9149 view.condition(&cx, |view, cx| !view.buffer.read(cx).is_parsing(cx))
9150 .await;
9151
9152 view.update(cx, |view, cx| {
9153 view.select_display_ranges(
9154 &[
9155 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 3),
9156 DisplayPoint::new(2, 5)..DisplayPoint::new(2, 5),
9157 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 4),
9158 ],
9159 cx,
9160 );
9161 view.newline(&Newline, cx);
9162
9163 assert_eq!(
9164 view.buffer().read(cx).read(cx).text(),
9165 concat!(
9166 "{ \n", // Suppress rustfmt
9167 "\n", //
9168 "}\n", //
9169 " x\n", //
9170 " /* \n", //
9171 " \n", //
9172 " */\n", //
9173 "x\n", //
9174 "{{} \n", //
9175 "}\n", //
9176 )
9177 );
9178 });
9179 }
9180
9181 #[gpui::test]
9182 fn test_highlighted_ranges(cx: &mut gpui::MutableAppContext) {
9183 let buffer = MultiBuffer::build_simple(&sample_text(16, 8, 'a'), cx);
9184 populate_settings(cx);
9185 let (_, editor) = cx.add_window(Default::default(), |cx| build_editor(buffer.clone(), cx));
9186
9187 editor.update(cx, |editor, cx| {
9188 struct Type1;
9189 struct Type2;
9190
9191 let buffer = buffer.read(cx).snapshot(cx);
9192
9193 let anchor_range = |range: Range<Point>| {
9194 buffer.anchor_after(range.start)..buffer.anchor_after(range.end)
9195 };
9196
9197 editor.highlight_background::<Type1>(
9198 vec![
9199 anchor_range(Point::new(2, 1)..Point::new(2, 3)),
9200 anchor_range(Point::new(4, 2)..Point::new(4, 4)),
9201 anchor_range(Point::new(6, 3)..Point::new(6, 5)),
9202 anchor_range(Point::new(8, 4)..Point::new(8, 6)),
9203 ],
9204 Color::red(),
9205 cx,
9206 );
9207 editor.highlight_background::<Type2>(
9208 vec![
9209 anchor_range(Point::new(3, 2)..Point::new(3, 5)),
9210 anchor_range(Point::new(5, 3)..Point::new(5, 6)),
9211 anchor_range(Point::new(7, 4)..Point::new(7, 7)),
9212 anchor_range(Point::new(9, 5)..Point::new(9, 8)),
9213 ],
9214 Color::green(),
9215 cx,
9216 );
9217
9218 let snapshot = editor.snapshot(cx);
9219 let mut highlighted_ranges = editor.background_highlights_in_range(
9220 anchor_range(Point::new(3, 4)..Point::new(7, 4)),
9221 &snapshot,
9222 );
9223 // Enforce a consistent ordering based on color without relying on the ordering of the
9224 // highlight's `TypeId` which is non-deterministic.
9225 highlighted_ranges.sort_unstable_by_key(|(_, color)| *color);
9226 assert_eq!(
9227 highlighted_ranges,
9228 &[
9229 (
9230 DisplayPoint::new(3, 2)..DisplayPoint::new(3, 5),
9231 Color::green(),
9232 ),
9233 (
9234 DisplayPoint::new(5, 3)..DisplayPoint::new(5, 6),
9235 Color::green(),
9236 ),
9237 (
9238 DisplayPoint::new(4, 2)..DisplayPoint::new(4, 4),
9239 Color::red(),
9240 ),
9241 (
9242 DisplayPoint::new(6, 3)..DisplayPoint::new(6, 5),
9243 Color::red(),
9244 ),
9245 ]
9246 );
9247 assert_eq!(
9248 editor.background_highlights_in_range(
9249 anchor_range(Point::new(5, 6)..Point::new(6, 4)),
9250 &snapshot,
9251 ),
9252 &[(
9253 DisplayPoint::new(6, 3)..DisplayPoint::new(6, 5),
9254 Color::red(),
9255 )]
9256 );
9257 });
9258 }
9259
9260 #[gpui::test]
9261 fn test_following(cx: &mut gpui::MutableAppContext) {
9262 let buffer = MultiBuffer::build_simple(&sample_text(16, 8, 'a'), cx);
9263 populate_settings(cx);
9264
9265 let (_, leader) = cx.add_window(Default::default(), |cx| build_editor(buffer.clone(), cx));
9266 let (_, follower) = cx.add_window(
9267 WindowOptions {
9268 bounds: WindowBounds::Fixed(RectF::from_points(vec2f(0., 0.), vec2f(10., 80.))),
9269 ..Default::default()
9270 },
9271 |cx| build_editor(buffer.clone(), cx),
9272 );
9273
9274 let pending_update = Rc::new(RefCell::new(None));
9275 follower.update(cx, {
9276 let update = pending_update.clone();
9277 |_, cx| {
9278 cx.subscribe(&leader, move |_, leader, event, cx| {
9279 leader
9280 .read(cx)
9281 .add_event_to_update_proto(event, &mut *update.borrow_mut(), cx);
9282 })
9283 .detach();
9284 }
9285 });
9286
9287 // Update the selections only
9288 leader.update(cx, |leader, cx| {
9289 leader.select_ranges([1..1], None, cx);
9290 });
9291 follower.update(cx, |follower, cx| {
9292 follower
9293 .apply_update_proto(pending_update.borrow_mut().take().unwrap(), cx)
9294 .unwrap();
9295 });
9296 assert_eq!(follower.read(cx).selected_ranges(cx), vec![1..1]);
9297
9298 // Update the scroll position only
9299 leader.update(cx, |leader, cx| {
9300 leader.set_scroll_position(vec2f(1.5, 3.5), cx);
9301 });
9302 follower.update(cx, |follower, cx| {
9303 follower
9304 .apply_update_proto(pending_update.borrow_mut().take().unwrap(), cx)
9305 .unwrap();
9306 });
9307 assert_eq!(
9308 follower.update(cx, |follower, cx| follower.scroll_position(cx)),
9309 vec2f(1.5, 3.5)
9310 );
9311
9312 // Update the selections and scroll position
9313 leader.update(cx, |leader, cx| {
9314 leader.select_ranges([0..0], None, cx);
9315 leader.request_autoscroll(Autoscroll::Newest, cx);
9316 leader.set_scroll_position(vec2f(1.5, 3.5), cx);
9317 });
9318 follower.update(cx, |follower, cx| {
9319 let initial_scroll_position = follower.scroll_position(cx);
9320 follower
9321 .apply_update_proto(pending_update.borrow_mut().take().unwrap(), cx)
9322 .unwrap();
9323 assert_eq!(follower.scroll_position(cx), initial_scroll_position);
9324 assert!(follower.autoscroll_request.is_some());
9325 });
9326 assert_eq!(follower.read(cx).selected_ranges(cx), vec![0..0]);
9327
9328 // Creating a pending selection that precedes another selection
9329 leader.update(cx, |leader, cx| {
9330 leader.select_ranges([1..1], None, cx);
9331 leader.begin_selection(DisplayPoint::new(0, 0), true, 1, cx);
9332 });
9333 follower.update(cx, |follower, cx| {
9334 follower
9335 .apply_update_proto(pending_update.borrow_mut().take().unwrap(), cx)
9336 .unwrap();
9337 });
9338 assert_eq!(follower.read(cx).selected_ranges(cx), vec![0..0, 1..1]);
9339
9340 // Extend the pending selection so that it surrounds another selection
9341 leader.update(cx, |leader, cx| {
9342 leader.extend_selection(DisplayPoint::new(0, 2), 1, cx);
9343 });
9344 follower.update(cx, |follower, cx| {
9345 follower
9346 .apply_update_proto(pending_update.borrow_mut().take().unwrap(), cx)
9347 .unwrap();
9348 });
9349 assert_eq!(follower.read(cx).selected_ranges(cx), vec![0..2]);
9350 }
9351
9352 #[test]
9353 fn test_combine_syntax_and_fuzzy_match_highlights() {
9354 let string = "abcdefghijklmnop";
9355 let syntax_ranges = [
9356 (
9357 0..3,
9358 HighlightStyle {
9359 color: Some(Color::red()),
9360 ..Default::default()
9361 },
9362 ),
9363 (
9364 4..8,
9365 HighlightStyle {
9366 color: Some(Color::green()),
9367 ..Default::default()
9368 },
9369 ),
9370 ];
9371 let match_indices = [4, 6, 7, 8];
9372 assert_eq!(
9373 combine_syntax_and_fuzzy_match_highlights(
9374 &string,
9375 Default::default(),
9376 syntax_ranges.into_iter(),
9377 &match_indices,
9378 ),
9379 &[
9380 (
9381 0..3,
9382 HighlightStyle {
9383 color: Some(Color::red()),
9384 ..Default::default()
9385 },
9386 ),
9387 (
9388 4..5,
9389 HighlightStyle {
9390 color: Some(Color::green()),
9391 weight: Some(fonts::Weight::BOLD),
9392 ..Default::default()
9393 },
9394 ),
9395 (
9396 5..6,
9397 HighlightStyle {
9398 color: Some(Color::green()),
9399 ..Default::default()
9400 },
9401 ),
9402 (
9403 6..8,
9404 HighlightStyle {
9405 color: Some(Color::green()),
9406 weight: Some(fonts::Weight::BOLD),
9407 ..Default::default()
9408 },
9409 ),
9410 (
9411 8..9,
9412 HighlightStyle {
9413 weight: Some(fonts::Weight::BOLD),
9414 ..Default::default()
9415 },
9416 ),
9417 ]
9418 );
9419 }
9420
9421 fn empty_range(row: usize, column: usize) -> Range<DisplayPoint> {
9422 let point = DisplayPoint::new(row as u32, column as u32);
9423 point..point
9424 }
9425
9426 fn build_editor(buffer: ModelHandle<MultiBuffer>, cx: &mut ViewContext<Editor>) -> Editor {
9427 Editor::new(EditorMode::Full, buffer, None, None, cx)
9428 }
9429
9430 fn populate_settings(cx: &mut gpui::MutableAppContext) {
9431 let settings = Settings::test(cx);
9432 cx.set_global(settings);
9433 }
9434
9435 fn assert_selection_ranges(
9436 marked_text: &str,
9437 selection_marker_pairs: Vec<(char, char)>,
9438 view: &mut Editor,
9439 cx: &mut ViewContext<Editor>,
9440 ) {
9441 let snapshot = view.snapshot(cx).display_snapshot;
9442 let mut marker_chars = Vec::new();
9443 for (start, end) in selection_marker_pairs.iter() {
9444 marker_chars.push(*start);
9445 marker_chars.push(*end);
9446 }
9447 let (_, markers) = marked_text_by(marked_text, marker_chars);
9448 let asserted_ranges: Vec<Range<DisplayPoint>> = selection_marker_pairs
9449 .iter()
9450 .map(|(start, end)| {
9451 let start = markers.get(start).unwrap()[0].to_display_point(&snapshot);
9452 let end = markers.get(end).unwrap()[0].to_display_point(&snapshot);
9453 start..end
9454 })
9455 .collect();
9456 assert_eq!(
9457 view.selected_display_ranges(cx),
9458 &asserted_ranges[..],
9459 "Assert selections are {}",
9460 marked_text
9461 );
9462 }
9463}
9464
9465trait RangeExt<T> {
9466 fn sorted(&self) -> Range<T>;
9467 fn to_inclusive(&self) -> RangeInclusive<T>;
9468}
9469
9470impl<T: Ord + Clone> RangeExt<T> for Range<T> {
9471 fn sorted(&self) -> Self {
9472 cmp::min(&self.start, &self.end).clone()..cmp::max(&self.start, &self.end).clone()
9473 }
9474
9475 fn to_inclusive(&self) -> RangeInclusive<T> {
9476 self.start.clone()..=self.end.clone()
9477 }
9478}