1pub mod display_map;
2mod element;
3pub mod items;
4pub mod movement;
5mod multi_buffer;
6
7#[cfg(test)]
8mod test;
9
10use aho_corasick::AhoCorasick;
11use anyhow::Result;
12use clock::ReplicaId;
13use collections::{BTreeMap, Bound, HashMap, HashSet};
14pub use display_map::DisplayPoint;
15use display_map::*;
16pub use element::*;
17use fuzzy::{StringMatch, StringMatchCandidate};
18use gpui::{
19 action,
20 color::Color,
21 elements::*,
22 executor,
23 fonts::{self, HighlightStyle, TextStyle},
24 geometry::vector::{vec2f, Vector2F},
25 keymap::Binding,
26 platform::CursorStyle,
27 text_layout, AppContext, AsyncAppContext, ClipboardItem, Element, ElementBox, Entity,
28 ModelHandle, MutableAppContext, RenderContext, Task, View, ViewContext, ViewHandle,
29 WeakViewHandle,
30};
31use itertools::Itertools as _;
32pub use language::{char_kind, CharKind};
33use language::{
34 BracketPair, Buffer, CodeAction, CodeLabel, Completion, Diagnostic, DiagnosticSeverity,
35 Language, OffsetRangeExt, Point, Selection, SelectionGoal, TransactionId,
36};
37use multi_buffer::MultiBufferChunks;
38pub use multi_buffer::{
39 Anchor, AnchorRangeExt, ExcerptId, MultiBuffer, MultiBufferSnapshot, ToOffset, ToPoint,
40};
41use ordered_float::OrderedFloat;
42use project::{Project, ProjectTransaction};
43use serde::{Deserialize, Serialize};
44use smallvec::SmallVec;
45use smol::Timer;
46use snippet::Snippet;
47use std::{
48 any::TypeId,
49 cmp::{self, Ordering, Reverse},
50 iter::{self, FromIterator},
51 mem,
52 ops::{Deref, DerefMut, Range, RangeInclusive, Sub},
53 sync::Arc,
54 time::{Duration, Instant},
55};
56pub use sum_tree::Bias;
57use text::rope::TextDimension;
58use theme::DiagnosticStyle;
59use util::{post_inc, ResultExt, TryFutureExt};
60use workspace::{settings, ItemNavHistory, Settings, Workspace};
61
62const CURSOR_BLINK_INTERVAL: Duration = Duration::from_millis(500);
63const MAX_LINE_LEN: usize = 1024;
64const MIN_NAVIGATION_HISTORY_ROW_DELTA: i64 = 10;
65
66action!(Cancel);
67action!(Backspace);
68action!(Delete);
69action!(Input, String);
70action!(Newline);
71action!(Tab);
72action!(Outdent);
73action!(DeleteLine);
74action!(DeleteToPreviousWordBoundary);
75action!(DeleteToNextWordBoundary);
76action!(DeleteToBeginningOfLine);
77action!(DeleteToEndOfLine);
78action!(CutToEndOfLine);
79action!(DuplicateLine);
80action!(MoveLineUp);
81action!(MoveLineDown);
82action!(Cut);
83action!(Copy);
84action!(Paste);
85action!(Undo);
86action!(Redo);
87action!(MoveUp);
88action!(MoveDown);
89action!(MoveLeft);
90action!(MoveRight);
91action!(MoveToPreviousWordStart);
92action!(MoveToNextWordEnd);
93action!(MoveToBeginningOfLine);
94action!(MoveToEndOfLine);
95action!(MoveToBeginning);
96action!(MoveToEnd);
97action!(SelectUp);
98action!(SelectDown);
99action!(SelectLeft);
100action!(SelectRight);
101action!(SelectToPreviousWordBoundary);
102action!(SelectToNextWordBoundary);
103action!(SelectToBeginningOfLine, bool);
104action!(SelectToEndOfLine, bool);
105action!(SelectToBeginning);
106action!(SelectToEnd);
107action!(SelectAll);
108action!(SelectLine);
109action!(SplitSelectionIntoLines);
110action!(AddSelectionAbove);
111action!(AddSelectionBelow);
112action!(SelectNext, bool);
113action!(ToggleComments);
114action!(SelectLargerSyntaxNode);
115action!(SelectSmallerSyntaxNode);
116action!(MoveToEnclosingBracket);
117action!(GoToDiagnostic, Direction);
118action!(GoToDefinition);
119action!(FindAllReferences);
120action!(Rename);
121action!(ConfirmRename);
122action!(PageUp);
123action!(PageDown);
124action!(Fold);
125action!(Unfold);
126action!(FoldSelectedRanges);
127action!(Scroll, Vector2F);
128action!(Select, SelectPhase);
129action!(ShowCompletions);
130action!(ToggleCodeActions, bool);
131action!(ConfirmCompletion, Option<usize>);
132action!(ConfirmCodeAction, Option<usize>);
133action!(OpenExcerpts);
134
135enum DocumentHighlightRead {}
136enum DocumentHighlightWrite {}
137
138#[derive(Copy, Clone, PartialEq, Eq)]
139pub enum Direction {
140 Prev,
141 Next,
142}
143
144pub fn init(cx: &mut MutableAppContext) {
145 cx.add_bindings(vec![
146 Binding::new("escape", Cancel, Some("Editor")),
147 Binding::new("backspace", Backspace, Some("Editor")),
148 Binding::new("ctrl-h", Backspace, Some("Editor")),
149 Binding::new("delete", Delete, Some("Editor")),
150 Binding::new("ctrl-d", Delete, Some("Editor")),
151 Binding::new("enter", Newline, Some("Editor && mode == full")),
152 Binding::new(
153 "alt-enter",
154 Input("\n".into()),
155 Some("Editor && mode == auto_height"),
156 ),
157 Binding::new(
158 "enter",
159 ConfirmCompletion(None),
160 Some("Editor && showing_completions"),
161 ),
162 Binding::new(
163 "enter",
164 ConfirmCodeAction(None),
165 Some("Editor && showing_code_actions"),
166 ),
167 Binding::new("enter", ConfirmRename, Some("Editor && renaming")),
168 Binding::new("tab", Tab, Some("Editor")),
169 Binding::new(
170 "tab",
171 ConfirmCompletion(None),
172 Some("Editor && showing_completions"),
173 ),
174 Binding::new("shift-tab", Outdent, Some("Editor")),
175 Binding::new("ctrl-shift-K", DeleteLine, Some("Editor")),
176 Binding::new(
177 "alt-backspace",
178 DeleteToPreviousWordBoundary,
179 Some("Editor"),
180 ),
181 Binding::new("alt-h", DeleteToPreviousWordBoundary, Some("Editor")),
182 Binding::new("alt-delete", DeleteToNextWordBoundary, Some("Editor")),
183 Binding::new("alt-d", DeleteToNextWordBoundary, Some("Editor")),
184 Binding::new("cmd-backspace", DeleteToBeginningOfLine, Some("Editor")),
185 Binding::new("cmd-delete", DeleteToEndOfLine, Some("Editor")),
186 Binding::new("ctrl-k", CutToEndOfLine, Some("Editor")),
187 Binding::new("cmd-shift-D", DuplicateLine, Some("Editor")),
188 Binding::new("ctrl-cmd-up", MoveLineUp, Some("Editor")),
189 Binding::new("ctrl-cmd-down", MoveLineDown, Some("Editor")),
190 Binding::new("cmd-x", Cut, Some("Editor")),
191 Binding::new("cmd-c", Copy, Some("Editor")),
192 Binding::new("cmd-v", Paste, Some("Editor")),
193 Binding::new("cmd-z", Undo, Some("Editor")),
194 Binding::new("cmd-shift-Z", Redo, Some("Editor")),
195 Binding::new("up", MoveUp, Some("Editor")),
196 Binding::new("down", MoveDown, Some("Editor")),
197 Binding::new("left", MoveLeft, Some("Editor")),
198 Binding::new("right", MoveRight, Some("Editor")),
199 Binding::new("ctrl-p", MoveUp, Some("Editor")),
200 Binding::new("ctrl-n", MoveDown, Some("Editor")),
201 Binding::new("ctrl-b", MoveLeft, Some("Editor")),
202 Binding::new("ctrl-f", MoveRight, Some("Editor")),
203 Binding::new("alt-left", MoveToPreviousWordStart, Some("Editor")),
204 Binding::new("alt-b", MoveToPreviousWordStart, Some("Editor")),
205 Binding::new("alt-right", MoveToNextWordEnd, Some("Editor")),
206 Binding::new("alt-f", MoveToNextWordEnd, Some("Editor")),
207 Binding::new("cmd-left", MoveToBeginningOfLine, Some("Editor")),
208 Binding::new("ctrl-a", MoveToBeginningOfLine, Some("Editor")),
209 Binding::new("cmd-right", MoveToEndOfLine, Some("Editor")),
210 Binding::new("ctrl-e", MoveToEndOfLine, Some("Editor")),
211 Binding::new("cmd-up", MoveToBeginning, Some("Editor")),
212 Binding::new("cmd-down", MoveToEnd, Some("Editor")),
213 Binding::new("shift-up", SelectUp, Some("Editor")),
214 Binding::new("ctrl-shift-P", SelectUp, Some("Editor")),
215 Binding::new("shift-down", SelectDown, Some("Editor")),
216 Binding::new("ctrl-shift-N", SelectDown, Some("Editor")),
217 Binding::new("shift-left", SelectLeft, Some("Editor")),
218 Binding::new("ctrl-shift-B", SelectLeft, Some("Editor")),
219 Binding::new("shift-right", SelectRight, Some("Editor")),
220 Binding::new("ctrl-shift-F", SelectRight, Some("Editor")),
221 Binding::new(
222 "alt-shift-left",
223 SelectToPreviousWordBoundary,
224 Some("Editor"),
225 ),
226 Binding::new("alt-shift-B", SelectToPreviousWordBoundary, Some("Editor")),
227 Binding::new("alt-shift-right", SelectToNextWordBoundary, Some("Editor")),
228 Binding::new("alt-shift-F", SelectToNextWordBoundary, Some("Editor")),
229 Binding::new(
230 "cmd-shift-left",
231 SelectToBeginningOfLine(true),
232 Some("Editor"),
233 ),
234 Binding::new(
235 "ctrl-shift-A",
236 SelectToBeginningOfLine(true),
237 Some("Editor"),
238 ),
239 Binding::new("cmd-shift-right", SelectToEndOfLine(true), Some("Editor")),
240 Binding::new("ctrl-shift-E", SelectToEndOfLine(true), Some("Editor")),
241 Binding::new("cmd-shift-up", SelectToBeginning, Some("Editor")),
242 Binding::new("cmd-shift-down", SelectToEnd, Some("Editor")),
243 Binding::new("cmd-a", SelectAll, Some("Editor")),
244 Binding::new("cmd-l", SelectLine, Some("Editor")),
245 Binding::new("cmd-shift-L", SplitSelectionIntoLines, Some("Editor")),
246 Binding::new("cmd-alt-up", AddSelectionAbove, Some("Editor")),
247 Binding::new("cmd-ctrl-p", AddSelectionAbove, Some("Editor")),
248 Binding::new("cmd-alt-down", AddSelectionBelow, Some("Editor")),
249 Binding::new("cmd-ctrl-n", AddSelectionBelow, Some("Editor")),
250 Binding::new("cmd-d", SelectNext(false), Some("Editor")),
251 Binding::new("cmd-k cmd-d", SelectNext(true), Some("Editor")),
252 Binding::new("cmd-/", ToggleComments, Some("Editor")),
253 Binding::new("alt-up", SelectLargerSyntaxNode, Some("Editor")),
254 Binding::new("ctrl-w", SelectLargerSyntaxNode, Some("Editor")),
255 Binding::new("alt-down", SelectSmallerSyntaxNode, Some("Editor")),
256 Binding::new("ctrl-shift-W", SelectSmallerSyntaxNode, Some("Editor")),
257 Binding::new("f8", GoToDiagnostic(Direction::Next), Some("Editor")),
258 Binding::new("shift-f8", GoToDiagnostic(Direction::Prev), Some("Editor")),
259 Binding::new("f2", Rename, Some("Editor")),
260 Binding::new("f12", GoToDefinition, Some("Editor")),
261 Binding::new("alt-shift-f12", FindAllReferences, Some("Editor")),
262 Binding::new("ctrl-m", MoveToEnclosingBracket, Some("Editor")),
263 Binding::new("pageup", PageUp, Some("Editor")),
264 Binding::new("pagedown", PageDown, Some("Editor")),
265 Binding::new("alt-cmd-[", Fold, Some("Editor")),
266 Binding::new("alt-cmd-]", Unfold, Some("Editor")),
267 Binding::new("alt-cmd-f", FoldSelectedRanges, Some("Editor")),
268 Binding::new("ctrl-space", ShowCompletions, Some("Editor")),
269 Binding::new("cmd-.", ToggleCodeActions(false), Some("Editor")),
270 Binding::new("alt-enter", OpenExcerpts, Some("Editor")),
271 ]);
272
273 cx.add_action(Editor::open_new);
274 cx.add_action(|this: &mut Editor, action: &Scroll, cx| this.set_scroll_position(action.0, cx));
275 cx.add_action(Editor::select);
276 cx.add_action(Editor::cancel);
277 cx.add_action(Editor::handle_input);
278 cx.add_action(Editor::newline);
279 cx.add_action(Editor::backspace);
280 cx.add_action(Editor::delete);
281 cx.add_action(Editor::tab);
282 cx.add_action(Editor::outdent);
283 cx.add_action(Editor::delete_line);
284 cx.add_action(Editor::delete_to_previous_word_start);
285 cx.add_action(Editor::delete_to_next_word_end);
286 cx.add_action(Editor::delete_to_beginning_of_line);
287 cx.add_action(Editor::delete_to_end_of_line);
288 cx.add_action(Editor::cut_to_end_of_line);
289 cx.add_action(Editor::duplicate_line);
290 cx.add_action(Editor::move_line_up);
291 cx.add_action(Editor::move_line_down);
292 cx.add_action(Editor::cut);
293 cx.add_action(Editor::copy);
294 cx.add_action(Editor::paste);
295 cx.add_action(Editor::undo);
296 cx.add_action(Editor::redo);
297 cx.add_action(Editor::move_up);
298 cx.add_action(Editor::move_down);
299 cx.add_action(Editor::move_left);
300 cx.add_action(Editor::move_right);
301 cx.add_action(Editor::move_to_previous_word_start);
302 cx.add_action(Editor::move_to_next_word_end);
303 cx.add_action(Editor::move_to_beginning_of_line);
304 cx.add_action(Editor::move_to_end_of_line);
305 cx.add_action(Editor::move_to_beginning);
306 cx.add_action(Editor::move_to_end);
307 cx.add_action(Editor::select_up);
308 cx.add_action(Editor::select_down);
309 cx.add_action(Editor::select_left);
310 cx.add_action(Editor::select_right);
311 cx.add_action(Editor::select_to_previous_word_start);
312 cx.add_action(Editor::select_to_next_word_end);
313 cx.add_action(Editor::select_to_beginning_of_line);
314 cx.add_action(Editor::select_to_end_of_line);
315 cx.add_action(Editor::select_to_beginning);
316 cx.add_action(Editor::select_to_end);
317 cx.add_action(Editor::select_all);
318 cx.add_action(Editor::select_line);
319 cx.add_action(Editor::split_selection_into_lines);
320 cx.add_action(Editor::add_selection_above);
321 cx.add_action(Editor::add_selection_below);
322 cx.add_action(Editor::select_next);
323 cx.add_action(Editor::toggle_comments);
324 cx.add_action(Editor::select_larger_syntax_node);
325 cx.add_action(Editor::select_smaller_syntax_node);
326 cx.add_action(Editor::move_to_enclosing_bracket);
327 cx.add_action(Editor::go_to_diagnostic);
328 cx.add_action(Editor::go_to_definition);
329 cx.add_action(Editor::page_up);
330 cx.add_action(Editor::page_down);
331 cx.add_action(Editor::fold);
332 cx.add_action(Editor::unfold);
333 cx.add_action(Editor::fold_selected_ranges);
334 cx.add_action(Editor::show_completions);
335 cx.add_action(Editor::toggle_code_actions);
336 cx.add_action(Editor::open_excerpts);
337 cx.add_async_action(Editor::confirm_completion);
338 cx.add_async_action(Editor::confirm_code_action);
339 cx.add_async_action(Editor::rename);
340 cx.add_async_action(Editor::confirm_rename);
341 cx.add_async_action(Editor::find_all_references);
342
343 workspace::register_project_item::<Editor>(cx);
344 workspace::register_followable_item::<Editor>(cx);
345}
346
347trait InvalidationRegion {
348 fn ranges(&self) -> &[Range<Anchor>];
349}
350
351#[derive(Clone, Debug)]
352pub enum SelectPhase {
353 Begin {
354 position: DisplayPoint,
355 add: bool,
356 click_count: usize,
357 },
358 BeginColumnar {
359 position: DisplayPoint,
360 overshoot: u32,
361 },
362 Extend {
363 position: DisplayPoint,
364 click_count: usize,
365 },
366 Update {
367 position: DisplayPoint,
368 overshoot: u32,
369 scroll_position: Vector2F,
370 },
371 End,
372}
373
374#[derive(Clone, Debug)]
375pub enum SelectMode {
376 Character,
377 Word(Range<Anchor>),
378 Line(Range<Anchor>),
379 All,
380}
381
382#[derive(PartialEq, Eq)]
383pub enum Autoscroll {
384 Fit,
385 Center,
386 Newest,
387}
388
389#[derive(Copy, Clone, PartialEq, Eq)]
390pub enum EditorMode {
391 SingleLine,
392 AutoHeight { max_lines: usize },
393 Full,
394}
395
396#[derive(Clone)]
397pub enum SoftWrap {
398 None,
399 EditorWidth,
400 Column(u32),
401}
402
403#[derive(Clone)]
404pub struct EditorStyle {
405 pub text: TextStyle,
406 pub placeholder_text: Option<TextStyle>,
407 pub theme: theme::Editor,
408}
409
410type CompletionId = usize;
411
412pub type GetFieldEditorTheme = fn(&theme::Theme) -> theme::FieldEditor;
413
414type OverrideTextStyle = dyn Fn(&EditorStyle) -> Option<HighlightStyle>;
415
416pub struct Editor {
417 handle: WeakViewHandle<Self>,
418 buffer: ModelHandle<MultiBuffer>,
419 display_map: ModelHandle<DisplayMap>,
420 next_selection_id: usize,
421 selections: Arc<[Selection<Anchor>]>,
422 pending_selection: Option<PendingSelection>,
423 columnar_selection_tail: Option<Anchor>,
424 add_selections_state: Option<AddSelectionsState>,
425 select_next_state: Option<SelectNextState>,
426 selection_history:
427 HashMap<TransactionId, (Arc<[Selection<Anchor>]>, Option<Arc<[Selection<Anchor>]>>)>,
428 autoclose_stack: InvalidationStack<BracketPairState>,
429 snippet_stack: InvalidationStack<SnippetState>,
430 select_larger_syntax_node_stack: Vec<Box<[Selection<usize>]>>,
431 active_diagnostics: Option<ActiveDiagnosticGroup>,
432 scroll_position: Vector2F,
433 scroll_top_anchor: Anchor,
434 autoscroll_request: Option<(Autoscroll, bool)>,
435 soft_wrap_mode_override: Option<settings::SoftWrap>,
436 get_field_editor_theme: Option<GetFieldEditorTheme>,
437 override_text_style: Option<Box<OverrideTextStyle>>,
438 project: Option<ModelHandle<Project>>,
439 focused: bool,
440 show_local_cursors: bool,
441 show_local_selections: bool,
442 blink_epoch: usize,
443 blinking_paused: bool,
444 mode: EditorMode,
445 vertical_scroll_margin: f32,
446 placeholder_text: Option<Arc<str>>,
447 highlighted_rows: Option<Range<u32>>,
448 background_highlights: BTreeMap<TypeId, (Color, Vec<Range<Anchor>>)>,
449 nav_history: Option<ItemNavHistory>,
450 context_menu: Option<ContextMenu>,
451 completion_tasks: Vec<(CompletionId, Task<Option<()>>)>,
452 next_completion_id: CompletionId,
453 available_code_actions: Option<(ModelHandle<Buffer>, Arc<[CodeAction]>)>,
454 code_actions_task: Option<Task<()>>,
455 document_highlights_task: Option<Task<()>>,
456 pending_rename: Option<RenameState>,
457 searchable: bool,
458 cursor_shape: CursorShape,
459 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, 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, 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, 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.update_selections(selections, Some(Autoscroll::Newest), cx);
3960 } else {
3961 select_next_state.done = true;
3962 }
3963 }
3964
3965 self.select_next_state = Some(select_next_state);
3966 } else if selections.len() == 1 {
3967 let selection = selections.last_mut().unwrap();
3968 if selection.start == selection.end {
3969 let word_range = movement::surrounding_word(
3970 &display_map,
3971 selection.start.to_display_point(&display_map),
3972 );
3973 selection.start = word_range.start.to_offset(&display_map, Bias::Left);
3974 selection.end = word_range.end.to_offset(&display_map, Bias::Left);
3975 selection.goal = SelectionGoal::None;
3976 selection.reversed = false;
3977
3978 let query = buffer
3979 .text_for_range(selection.start..selection.end)
3980 .collect::<String>();
3981 let select_state = SelectNextState {
3982 query: AhoCorasick::new_auto_configured(&[query]),
3983 wordwise: true,
3984 done: false,
3985 };
3986 self.update_selections(selections, Some(Autoscroll::Newest), cx);
3987 self.select_next_state = Some(select_state);
3988 } else {
3989 let query = buffer
3990 .text_for_range(selection.start..selection.end)
3991 .collect::<String>();
3992 self.select_next_state = Some(SelectNextState {
3993 query: AhoCorasick::new_auto_configured(&[query]),
3994 wordwise: false,
3995 done: false,
3996 });
3997 self.select_next(action, cx);
3998 }
3999 }
4000 }
4001
4002 pub fn toggle_comments(&mut self, _: &ToggleComments, cx: &mut ViewContext<Self>) {
4003 // Get the line comment prefix. Split its trailing whitespace into a separate string,
4004 // as that portion won't be used for detecting if a line is a comment.
4005 let full_comment_prefix =
4006 if let Some(prefix) = self.language(cx).and_then(|l| l.line_comment_prefix()) {
4007 prefix.to_string()
4008 } else {
4009 return;
4010 };
4011 let comment_prefix = full_comment_prefix.trim_end_matches(' ');
4012 let comment_prefix_whitespace = &full_comment_prefix[comment_prefix.len()..];
4013
4014 self.transact(cx, |this, cx| {
4015 let mut selections = this.local_selections::<Point>(cx);
4016 let mut all_selection_lines_are_comments = true;
4017 let mut edit_ranges = Vec::new();
4018 let mut last_toggled_row = None;
4019 this.buffer.update(cx, |buffer, cx| {
4020 for selection in &mut selections {
4021 edit_ranges.clear();
4022 let snapshot = buffer.snapshot(cx);
4023
4024 let end_row =
4025 if selection.end.row > selection.start.row && selection.end.column == 0 {
4026 selection.end.row
4027 } else {
4028 selection.end.row + 1
4029 };
4030
4031 for row in selection.start.row..end_row {
4032 // If multiple selections contain a given row, avoid processing that
4033 // row more than once.
4034 if last_toggled_row == Some(row) {
4035 continue;
4036 } else {
4037 last_toggled_row = Some(row);
4038 }
4039
4040 if snapshot.is_line_blank(row) {
4041 continue;
4042 }
4043
4044 let start = Point::new(row, snapshot.indent_column_for_line(row));
4045 let mut line_bytes = snapshot
4046 .bytes_in_range(start..snapshot.max_point())
4047 .flatten()
4048 .copied();
4049
4050 // If this line currently begins with the line comment prefix, then record
4051 // the range containing the prefix.
4052 if all_selection_lines_are_comments
4053 && line_bytes
4054 .by_ref()
4055 .take(comment_prefix.len())
4056 .eq(comment_prefix.bytes())
4057 {
4058 // Include any whitespace that matches the comment prefix.
4059 let matching_whitespace_len = line_bytes
4060 .zip(comment_prefix_whitespace.bytes())
4061 .take_while(|(a, b)| a == b)
4062 .count()
4063 as u32;
4064 let end = Point::new(
4065 row,
4066 start.column
4067 + comment_prefix.len() as u32
4068 + matching_whitespace_len,
4069 );
4070 edit_ranges.push(start..end);
4071 }
4072 // If this line does not begin with the line comment prefix, then record
4073 // the position where the prefix should be inserted.
4074 else {
4075 all_selection_lines_are_comments = false;
4076 edit_ranges.push(start..start);
4077 }
4078 }
4079
4080 if !edit_ranges.is_empty() {
4081 if all_selection_lines_are_comments {
4082 buffer.edit(edit_ranges.iter().cloned(), "", cx);
4083 } else {
4084 let min_column =
4085 edit_ranges.iter().map(|r| r.start.column).min().unwrap();
4086 let edit_ranges = edit_ranges.iter().map(|range| {
4087 let position = Point::new(range.start.row, min_column);
4088 position..position
4089 });
4090 buffer.edit(edit_ranges, &full_comment_prefix, cx);
4091 }
4092 }
4093 }
4094 });
4095
4096 this.update_selections(
4097 this.local_selections::<usize>(cx),
4098 Some(Autoscroll::Fit),
4099 cx,
4100 );
4101 });
4102 }
4103
4104 pub fn select_larger_syntax_node(
4105 &mut self,
4106 _: &SelectLargerSyntaxNode,
4107 cx: &mut ViewContext<Self>,
4108 ) {
4109 let old_selections = self.local_selections::<usize>(cx).into_boxed_slice();
4110 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
4111 let buffer = self.buffer.read(cx).snapshot(cx);
4112
4113 let mut stack = mem::take(&mut self.select_larger_syntax_node_stack);
4114 let mut selected_larger_node = false;
4115 let new_selections = old_selections
4116 .iter()
4117 .map(|selection| {
4118 let old_range = selection.start..selection.end;
4119 let mut new_range = old_range.clone();
4120 while let Some(containing_range) =
4121 buffer.range_for_syntax_ancestor(new_range.clone())
4122 {
4123 new_range = containing_range;
4124 if !display_map.intersects_fold(new_range.start)
4125 && !display_map.intersects_fold(new_range.end)
4126 {
4127 break;
4128 }
4129 }
4130
4131 selected_larger_node |= new_range != old_range;
4132 Selection {
4133 id: selection.id,
4134 start: new_range.start,
4135 end: new_range.end,
4136 goal: SelectionGoal::None,
4137 reversed: selection.reversed,
4138 }
4139 })
4140 .collect::<Vec<_>>();
4141
4142 if selected_larger_node {
4143 stack.push(old_selections);
4144 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
4145 }
4146 self.select_larger_syntax_node_stack = stack;
4147 }
4148
4149 pub fn select_smaller_syntax_node(
4150 &mut self,
4151 _: &SelectSmallerSyntaxNode,
4152 cx: &mut ViewContext<Self>,
4153 ) {
4154 let mut stack = mem::take(&mut self.select_larger_syntax_node_stack);
4155 if let Some(selections) = stack.pop() {
4156 self.update_selections(selections.to_vec(), Some(Autoscroll::Fit), cx);
4157 }
4158 self.select_larger_syntax_node_stack = stack;
4159 }
4160
4161 pub fn move_to_enclosing_bracket(
4162 &mut self,
4163 _: &MoveToEnclosingBracket,
4164 cx: &mut ViewContext<Self>,
4165 ) {
4166 let mut selections = self.local_selections::<usize>(cx);
4167 let buffer = self.buffer.read(cx).snapshot(cx);
4168 for selection in &mut selections {
4169 if let Some((open_range, close_range)) =
4170 buffer.enclosing_bracket_ranges(selection.start..selection.end)
4171 {
4172 let close_range = close_range.to_inclusive();
4173 let destination = if close_range.contains(&selection.start)
4174 && close_range.contains(&selection.end)
4175 {
4176 open_range.end
4177 } else {
4178 *close_range.start()
4179 };
4180 selection.start = destination;
4181 selection.end = destination;
4182 }
4183 }
4184
4185 self.update_selections(selections, Some(Autoscroll::Fit), cx);
4186 }
4187
4188 pub fn go_to_diagnostic(
4189 &mut self,
4190 &GoToDiagnostic(direction): &GoToDiagnostic,
4191 cx: &mut ViewContext<Self>,
4192 ) {
4193 let buffer = self.buffer.read(cx).snapshot(cx);
4194 let selection = self.newest_selection_with_snapshot::<usize>(&buffer);
4195 let mut active_primary_range = self.active_diagnostics.as_ref().map(|active_diagnostics| {
4196 active_diagnostics
4197 .primary_range
4198 .to_offset(&buffer)
4199 .to_inclusive()
4200 });
4201 let mut search_start = if let Some(active_primary_range) = active_primary_range.as_ref() {
4202 if active_primary_range.contains(&selection.head()) {
4203 *active_primary_range.end()
4204 } else {
4205 selection.head()
4206 }
4207 } else {
4208 selection.head()
4209 };
4210
4211 loop {
4212 let mut diagnostics = if direction == Direction::Prev {
4213 buffer.diagnostics_in_range::<_, usize>(0..search_start, true)
4214 } else {
4215 buffer.diagnostics_in_range::<_, usize>(search_start..buffer.len(), false)
4216 };
4217 let group = diagnostics.find_map(|entry| {
4218 if entry.diagnostic.is_primary
4219 && entry.diagnostic.severity <= DiagnosticSeverity::WARNING
4220 && !entry.range.is_empty()
4221 && Some(entry.range.end) != active_primary_range.as_ref().map(|r| *r.end())
4222 {
4223 Some((entry.range, entry.diagnostic.group_id))
4224 } else {
4225 None
4226 }
4227 });
4228
4229 if let Some((primary_range, group_id)) = group {
4230 self.activate_diagnostics(group_id, cx);
4231 self.update_selections(
4232 vec![Selection {
4233 id: selection.id,
4234 start: primary_range.start,
4235 end: primary_range.start,
4236 reversed: false,
4237 goal: SelectionGoal::None,
4238 }],
4239 Some(Autoscroll::Center),
4240 cx,
4241 );
4242 break;
4243 } else {
4244 // Cycle around to the start of the buffer, potentially moving back to the start of
4245 // the currently active diagnostic.
4246 active_primary_range.take();
4247 if direction == Direction::Prev {
4248 if search_start == buffer.len() {
4249 break;
4250 } else {
4251 search_start = buffer.len();
4252 }
4253 } else {
4254 if search_start == 0 {
4255 break;
4256 } else {
4257 search_start = 0;
4258 }
4259 }
4260 }
4261 }
4262 }
4263
4264 pub fn go_to_definition(
4265 workspace: &mut Workspace,
4266 _: &GoToDefinition,
4267 cx: &mut ViewContext<Workspace>,
4268 ) {
4269 let active_item = workspace.active_item(cx);
4270 let editor_handle = if let Some(editor) = active_item
4271 .as_ref()
4272 .and_then(|item| item.act_as::<Self>(cx))
4273 {
4274 editor
4275 } else {
4276 return;
4277 };
4278
4279 let editor = editor_handle.read(cx);
4280 let head = editor.newest_selection::<usize>(cx).head();
4281 let (buffer, head) =
4282 if let Some(text_anchor) = editor.buffer.read(cx).text_anchor_for_position(head, cx) {
4283 text_anchor
4284 } else {
4285 return;
4286 };
4287
4288 let project = workspace.project().clone();
4289 let definitions = project.update(cx, |project, cx| project.definition(&buffer, head, cx));
4290 cx.spawn(|workspace, mut cx| async move {
4291 let definitions = definitions.await?;
4292 workspace.update(&mut cx, |workspace, cx| {
4293 let nav_history = workspace.active_pane().read(cx).nav_history().clone();
4294 for definition in definitions {
4295 let range = definition.range.to_offset(definition.buffer.read(cx));
4296
4297 let target_editor_handle = workspace.open_project_item(definition.buffer, cx);
4298 target_editor_handle.update(cx, |target_editor, cx| {
4299 // When selecting a definition in a different buffer, disable the nav history
4300 // to avoid creating a history entry at the previous cursor location.
4301 if editor_handle != target_editor_handle {
4302 nav_history.borrow_mut().disable();
4303 }
4304 target_editor.select_ranges([range], Some(Autoscroll::Center), cx);
4305 nav_history.borrow_mut().enable();
4306 });
4307 }
4308 });
4309
4310 Ok::<(), anyhow::Error>(())
4311 })
4312 .detach_and_log_err(cx);
4313 }
4314
4315 pub fn find_all_references(
4316 workspace: &mut Workspace,
4317 _: &FindAllReferences,
4318 cx: &mut ViewContext<Workspace>,
4319 ) -> Option<Task<Result<()>>> {
4320 let active_item = workspace.active_item(cx)?;
4321 let editor_handle = active_item.act_as::<Self>(cx)?;
4322
4323 let editor = editor_handle.read(cx);
4324 let head = editor.newest_selection::<usize>(cx).head();
4325 let (buffer, head) = editor.buffer.read(cx).text_anchor_for_position(head, cx)?;
4326 let replica_id = editor.replica_id(cx);
4327
4328 let project = workspace.project().clone();
4329 let references = project.update(cx, |project, cx| project.references(&buffer, head, cx));
4330 Some(cx.spawn(|workspace, mut cx| async move {
4331 let mut locations = references.await?;
4332 if locations.is_empty() {
4333 return Ok(());
4334 }
4335
4336 locations.sort_by_key(|location| location.buffer.id());
4337 let mut locations = locations.into_iter().peekable();
4338 let mut ranges_to_highlight = Vec::new();
4339
4340 let excerpt_buffer = cx.add_model(|cx| {
4341 let mut symbol_name = None;
4342 let mut multibuffer = MultiBuffer::new(replica_id);
4343 while let Some(location) = locations.next() {
4344 let buffer = location.buffer.read(cx);
4345 let mut ranges_for_buffer = Vec::new();
4346 let range = location.range.to_offset(buffer);
4347 ranges_for_buffer.push(range.clone());
4348 if symbol_name.is_none() {
4349 symbol_name = Some(buffer.text_for_range(range).collect::<String>());
4350 }
4351
4352 while let Some(next_location) = locations.peek() {
4353 if next_location.buffer == location.buffer {
4354 ranges_for_buffer.push(next_location.range.to_offset(buffer));
4355 locations.next();
4356 } else {
4357 break;
4358 }
4359 }
4360
4361 ranges_for_buffer.sort_by_key(|range| (range.start, Reverse(range.end)));
4362 ranges_to_highlight.extend(multibuffer.push_excerpts_with_context_lines(
4363 location.buffer.clone(),
4364 ranges_for_buffer,
4365 1,
4366 cx,
4367 ));
4368 }
4369 multibuffer.with_title(format!("References to `{}`", symbol_name.unwrap()))
4370 });
4371
4372 workspace.update(&mut cx, |workspace, cx| {
4373 let editor =
4374 cx.add_view(|cx| Editor::for_multibuffer(excerpt_buffer, Some(project), cx));
4375 editor.update(cx, |editor, cx| {
4376 let color = editor.style(cx).highlighted_line_background;
4377 editor.highlight_background::<Self>(ranges_to_highlight, color, cx);
4378 });
4379 workspace.add_item(Box::new(editor), cx);
4380 });
4381
4382 Ok(())
4383 }))
4384 }
4385
4386 pub fn rename(&mut self, _: &Rename, cx: &mut ViewContext<Self>) -> Option<Task<Result<()>>> {
4387 use language::ToOffset as _;
4388
4389 let project = self.project.clone()?;
4390 let selection = self.newest_anchor_selection().clone();
4391 let (cursor_buffer, cursor_buffer_position) = self
4392 .buffer
4393 .read(cx)
4394 .text_anchor_for_position(selection.head(), cx)?;
4395 let (tail_buffer, _) = self
4396 .buffer
4397 .read(cx)
4398 .text_anchor_for_position(selection.tail(), cx)?;
4399 if tail_buffer != cursor_buffer {
4400 return None;
4401 }
4402
4403 let snapshot = cursor_buffer.read(cx).snapshot();
4404 let cursor_buffer_offset = cursor_buffer_position.to_offset(&snapshot);
4405 let prepare_rename = project.update(cx, |project, cx| {
4406 project.prepare_rename(cursor_buffer, cursor_buffer_offset, cx)
4407 });
4408
4409 Some(cx.spawn(|this, mut cx| async move {
4410 if let Some(rename_range) = prepare_rename.await? {
4411 let rename_buffer_range = rename_range.to_offset(&snapshot);
4412 let cursor_offset_in_rename_range =
4413 cursor_buffer_offset.saturating_sub(rename_buffer_range.start);
4414
4415 this.update(&mut cx, |this, cx| {
4416 this.take_rename(false, cx);
4417 let style = this.style(cx);
4418 let buffer = this.buffer.read(cx).read(cx);
4419 let cursor_offset = selection.head().to_offset(&buffer);
4420 let rename_start = cursor_offset.saturating_sub(cursor_offset_in_rename_range);
4421 let rename_end = rename_start + rename_buffer_range.len();
4422 let range = buffer.anchor_before(rename_start)..buffer.anchor_after(rename_end);
4423 let mut old_highlight_id = None;
4424 let old_name = buffer
4425 .chunks(rename_start..rename_end, true)
4426 .map(|chunk| {
4427 if old_highlight_id.is_none() {
4428 old_highlight_id = chunk.syntax_highlight_id;
4429 }
4430 chunk.text
4431 })
4432 .collect();
4433
4434 drop(buffer);
4435
4436 // Position the selection in the rename editor so that it matches the current selection.
4437 this.show_local_selections = false;
4438 let rename_editor = cx.add_view(|cx| {
4439 let mut editor = Editor::single_line(None, cx);
4440 if let Some(old_highlight_id) = old_highlight_id {
4441 editor.override_text_style =
4442 Some(Box::new(move |style| old_highlight_id.style(&style.syntax)));
4443 }
4444 editor
4445 .buffer
4446 .update(cx, |buffer, cx| buffer.edit([0..0], &old_name, cx));
4447 editor.select_all(&SelectAll, cx);
4448 editor
4449 });
4450
4451 let ranges = this
4452 .clear_background_highlights::<DocumentHighlightWrite>(cx)
4453 .into_iter()
4454 .flat_map(|(_, ranges)| ranges)
4455 .chain(
4456 this.clear_background_highlights::<DocumentHighlightRead>(cx)
4457 .into_iter()
4458 .flat_map(|(_, ranges)| ranges),
4459 )
4460 .collect();
4461
4462 this.highlight_text::<Rename>(
4463 ranges,
4464 HighlightStyle {
4465 fade_out: Some(style.rename_fade),
4466 ..Default::default()
4467 },
4468 cx,
4469 );
4470 cx.focus(&rename_editor);
4471 let block_id = this.insert_blocks(
4472 [BlockProperties {
4473 position: range.start.clone(),
4474 height: 1,
4475 render: Arc::new({
4476 let editor = rename_editor.clone();
4477 move |cx: &BlockContext| {
4478 ChildView::new(editor.clone())
4479 .contained()
4480 .with_padding_left(cx.anchor_x)
4481 .boxed()
4482 }
4483 }),
4484 disposition: BlockDisposition::Below,
4485 }],
4486 cx,
4487 )[0];
4488 this.pending_rename = Some(RenameState {
4489 range,
4490 old_name,
4491 editor: rename_editor,
4492 block_id,
4493 });
4494 });
4495 }
4496
4497 Ok(())
4498 }))
4499 }
4500
4501 pub fn confirm_rename(
4502 workspace: &mut Workspace,
4503 _: &ConfirmRename,
4504 cx: &mut ViewContext<Workspace>,
4505 ) -> Option<Task<Result<()>>> {
4506 let editor = workspace.active_item(cx)?.act_as::<Editor>(cx)?;
4507
4508 let (buffer, range, old_name, new_name) = editor.update(cx, |editor, cx| {
4509 let rename = editor.take_rename(false, cx)?;
4510 let buffer = editor.buffer.read(cx);
4511 let (start_buffer, start) =
4512 buffer.text_anchor_for_position(rename.range.start.clone(), cx)?;
4513 let (end_buffer, end) =
4514 buffer.text_anchor_for_position(rename.range.end.clone(), cx)?;
4515 if start_buffer == end_buffer {
4516 let new_name = rename.editor.read(cx).text(cx);
4517 Some((start_buffer, start..end, rename.old_name, new_name))
4518 } else {
4519 None
4520 }
4521 })?;
4522
4523 let rename = workspace.project().clone().update(cx, |project, cx| {
4524 project.perform_rename(
4525 buffer.clone(),
4526 range.start.clone(),
4527 new_name.clone(),
4528 true,
4529 cx,
4530 )
4531 });
4532
4533 Some(cx.spawn(|workspace, mut cx| async move {
4534 let project_transaction = rename.await?;
4535 Self::open_project_transaction(
4536 editor.clone(),
4537 workspace,
4538 project_transaction,
4539 format!("Rename: {} → {}", old_name, new_name),
4540 cx.clone(),
4541 )
4542 .await?;
4543
4544 editor.update(&mut cx, |editor, cx| {
4545 editor.refresh_document_highlights(cx);
4546 });
4547 Ok(())
4548 }))
4549 }
4550
4551 fn take_rename(
4552 &mut self,
4553 moving_cursor: bool,
4554 cx: &mut ViewContext<Self>,
4555 ) -> Option<RenameState> {
4556 let rename = self.pending_rename.take()?;
4557 self.remove_blocks([rename.block_id].into_iter().collect(), cx);
4558 self.clear_text_highlights::<Rename>(cx);
4559 self.show_local_selections = true;
4560
4561 if moving_cursor {
4562 let cursor_in_rename_editor =
4563 rename.editor.read(cx).newest_selection::<usize>(cx).head();
4564
4565 // Update the selection to match the position of the selection inside
4566 // the rename editor.
4567 let snapshot = self.buffer.read(cx).read(cx);
4568 let rename_range = rename.range.to_offset(&snapshot);
4569 let cursor_in_editor = snapshot
4570 .clip_offset(rename_range.start + cursor_in_rename_editor, Bias::Left)
4571 .min(rename_range.end);
4572 drop(snapshot);
4573
4574 self.update_selections(
4575 vec![Selection {
4576 id: self.newest_anchor_selection().id,
4577 start: cursor_in_editor,
4578 end: cursor_in_editor,
4579 reversed: false,
4580 goal: SelectionGoal::None,
4581 }],
4582 None,
4583 cx,
4584 );
4585 }
4586
4587 Some(rename)
4588 }
4589
4590 fn invalidate_rename_range(
4591 &mut self,
4592 buffer: &MultiBufferSnapshot,
4593 cx: &mut ViewContext<Self>,
4594 ) {
4595 if let Some(rename) = self.pending_rename.as_ref() {
4596 if self.selections.len() == 1 {
4597 let head = self.selections[0].head().to_offset(buffer);
4598 let range = rename.range.to_offset(buffer).to_inclusive();
4599 if range.contains(&head) {
4600 return;
4601 }
4602 }
4603 let rename = self.pending_rename.take().unwrap();
4604 self.remove_blocks([rename.block_id].into_iter().collect(), cx);
4605 self.clear_background_highlights::<Rename>(cx);
4606 }
4607 }
4608
4609 #[cfg(any(test, feature = "test-support"))]
4610 pub fn pending_rename(&self) -> Option<&RenameState> {
4611 self.pending_rename.as_ref()
4612 }
4613
4614 fn refresh_active_diagnostics(&mut self, cx: &mut ViewContext<Editor>) {
4615 if let Some(active_diagnostics) = self.active_diagnostics.as_mut() {
4616 let buffer = self.buffer.read(cx).snapshot(cx);
4617 let primary_range_start = active_diagnostics.primary_range.start.to_offset(&buffer);
4618 let is_valid = buffer
4619 .diagnostics_in_range::<_, usize>(active_diagnostics.primary_range.clone(), false)
4620 .any(|entry| {
4621 entry.diagnostic.is_primary
4622 && !entry.range.is_empty()
4623 && entry.range.start == primary_range_start
4624 && entry.diagnostic.message == active_diagnostics.primary_message
4625 });
4626
4627 if is_valid != active_diagnostics.is_valid {
4628 active_diagnostics.is_valid = is_valid;
4629 let mut new_styles = HashMap::default();
4630 for (block_id, diagnostic) in &active_diagnostics.blocks {
4631 new_styles.insert(
4632 *block_id,
4633 diagnostic_block_renderer(diagnostic.clone(), is_valid),
4634 );
4635 }
4636 self.display_map
4637 .update(cx, |display_map, _| display_map.replace_blocks(new_styles));
4638 }
4639 }
4640 }
4641
4642 fn activate_diagnostics(&mut self, group_id: usize, cx: &mut ViewContext<Self>) {
4643 self.dismiss_diagnostics(cx);
4644 self.active_diagnostics = self.display_map.update(cx, |display_map, cx| {
4645 let buffer = self.buffer.read(cx).snapshot(cx);
4646
4647 let mut primary_range = None;
4648 let mut primary_message = None;
4649 let mut group_end = Point::zero();
4650 let diagnostic_group = buffer
4651 .diagnostic_group::<Point>(group_id)
4652 .map(|entry| {
4653 if entry.range.end > group_end {
4654 group_end = entry.range.end;
4655 }
4656 if entry.diagnostic.is_primary {
4657 primary_range = Some(entry.range.clone());
4658 primary_message = Some(entry.diagnostic.message.clone());
4659 }
4660 entry
4661 })
4662 .collect::<Vec<_>>();
4663 let primary_range = primary_range.unwrap();
4664 let primary_message = primary_message.unwrap();
4665 let primary_range =
4666 buffer.anchor_after(primary_range.start)..buffer.anchor_before(primary_range.end);
4667
4668 let blocks = display_map
4669 .insert_blocks(
4670 diagnostic_group.iter().map(|entry| {
4671 let diagnostic = entry.diagnostic.clone();
4672 let message_height = diagnostic.message.lines().count() as u8;
4673 BlockProperties {
4674 position: buffer.anchor_after(entry.range.start),
4675 height: message_height,
4676 render: diagnostic_block_renderer(diagnostic, true),
4677 disposition: BlockDisposition::Below,
4678 }
4679 }),
4680 cx,
4681 )
4682 .into_iter()
4683 .zip(diagnostic_group.into_iter().map(|entry| entry.diagnostic))
4684 .collect();
4685
4686 Some(ActiveDiagnosticGroup {
4687 primary_range,
4688 primary_message,
4689 blocks,
4690 is_valid: true,
4691 })
4692 });
4693 }
4694
4695 fn dismiss_diagnostics(&mut self, cx: &mut ViewContext<Self>) {
4696 if let Some(active_diagnostic_group) = self.active_diagnostics.take() {
4697 self.display_map.update(cx, |display_map, cx| {
4698 display_map.remove_blocks(active_diagnostic_group.blocks.into_keys().collect(), cx);
4699 });
4700 cx.notify();
4701 }
4702 }
4703
4704 fn build_columnar_selection(
4705 &mut self,
4706 display_map: &DisplaySnapshot,
4707 row: u32,
4708 columns: &Range<u32>,
4709 reversed: bool,
4710 ) -> Option<Selection<Point>> {
4711 let is_empty = columns.start == columns.end;
4712 let line_len = display_map.line_len(row);
4713 if columns.start < line_len || (is_empty && columns.start == line_len) {
4714 let start = DisplayPoint::new(row, columns.start);
4715 let end = DisplayPoint::new(row, cmp::min(columns.end, line_len));
4716 Some(Selection {
4717 id: post_inc(&mut self.next_selection_id),
4718 start: start.to_point(display_map),
4719 end: end.to_point(display_map),
4720 reversed,
4721 goal: SelectionGoal::ColumnRange {
4722 start: columns.start,
4723 end: columns.end,
4724 },
4725 })
4726 } else {
4727 None
4728 }
4729 }
4730
4731 pub fn local_selections_in_range(
4732 &self,
4733 range: Range<Anchor>,
4734 display_map: &DisplaySnapshot,
4735 ) -> Vec<Selection<Point>> {
4736 let buffer = &display_map.buffer_snapshot;
4737
4738 let start_ix = match self
4739 .selections
4740 .binary_search_by(|probe| probe.end.cmp(&range.start, &buffer))
4741 {
4742 Ok(ix) | Err(ix) => ix,
4743 };
4744 let end_ix = match self
4745 .selections
4746 .binary_search_by(|probe| probe.start.cmp(&range.end, &buffer))
4747 {
4748 Ok(ix) => ix + 1,
4749 Err(ix) => ix,
4750 };
4751
4752 fn point_selection(
4753 selection: &Selection<Anchor>,
4754 buffer: &MultiBufferSnapshot,
4755 ) -> Selection<Point> {
4756 let start = selection.start.to_point(&buffer);
4757 let end = selection.end.to_point(&buffer);
4758 Selection {
4759 id: selection.id,
4760 start,
4761 end,
4762 reversed: selection.reversed,
4763 goal: selection.goal,
4764 }
4765 }
4766
4767 self.selections[start_ix..end_ix]
4768 .iter()
4769 .chain(
4770 self.pending_selection
4771 .as_ref()
4772 .map(|pending| &pending.selection),
4773 )
4774 .map(|s| point_selection(s, &buffer))
4775 .collect()
4776 }
4777
4778 pub fn local_selections<'a, D>(&self, cx: &'a AppContext) -> Vec<Selection<D>>
4779 where
4780 D: 'a + TextDimension + Ord + Sub<D, Output = D>,
4781 {
4782 let buffer = self.buffer.read(cx).snapshot(cx);
4783 let mut selections = self
4784 .resolve_selections::<D, _>(self.selections.iter(), &buffer)
4785 .peekable();
4786
4787 let mut pending_selection = self.pending_selection::<D>(&buffer);
4788
4789 iter::from_fn(move || {
4790 if let Some(pending) = pending_selection.as_mut() {
4791 while let Some(next_selection) = selections.peek() {
4792 if pending.start <= next_selection.end && pending.end >= next_selection.start {
4793 let next_selection = selections.next().unwrap();
4794 if next_selection.start < pending.start {
4795 pending.start = next_selection.start;
4796 }
4797 if next_selection.end > pending.end {
4798 pending.end = next_selection.end;
4799 }
4800 } else if next_selection.end < pending.start {
4801 return selections.next();
4802 } else {
4803 break;
4804 }
4805 }
4806
4807 pending_selection.take()
4808 } else {
4809 selections.next()
4810 }
4811 })
4812 .collect()
4813 }
4814
4815 fn resolve_selections<'a, D, I>(
4816 &self,
4817 selections: I,
4818 snapshot: &MultiBufferSnapshot,
4819 ) -> impl 'a + Iterator<Item = Selection<D>>
4820 where
4821 D: TextDimension + Ord + Sub<D, Output = D>,
4822 I: 'a + IntoIterator<Item = &'a Selection<Anchor>>,
4823 {
4824 let (to_summarize, selections) = selections.into_iter().tee();
4825 let mut summaries = snapshot
4826 .summaries_for_anchors::<D, _>(to_summarize.flat_map(|s| [&s.start, &s.end]))
4827 .into_iter();
4828 selections.map(move |s| Selection {
4829 id: s.id,
4830 start: summaries.next().unwrap(),
4831 end: summaries.next().unwrap(),
4832 reversed: s.reversed,
4833 goal: s.goal,
4834 })
4835 }
4836
4837 fn pending_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
4838 &self,
4839 snapshot: &MultiBufferSnapshot,
4840 ) -> Option<Selection<D>> {
4841 self.pending_selection
4842 .as_ref()
4843 .map(|pending| self.resolve_selection(&pending.selection, &snapshot))
4844 }
4845
4846 fn resolve_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
4847 &self,
4848 selection: &Selection<Anchor>,
4849 buffer: &MultiBufferSnapshot,
4850 ) -> Selection<D> {
4851 Selection {
4852 id: selection.id,
4853 start: selection.start.summary::<D>(&buffer),
4854 end: selection.end.summary::<D>(&buffer),
4855 reversed: selection.reversed,
4856 goal: selection.goal,
4857 }
4858 }
4859
4860 fn selection_count<'a>(&self) -> usize {
4861 let mut count = self.selections.len();
4862 if self.pending_selection.is_some() {
4863 count += 1;
4864 }
4865 count
4866 }
4867
4868 pub fn oldest_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
4869 &self,
4870 cx: &AppContext,
4871 ) -> Selection<D> {
4872 let snapshot = self.buffer.read(cx).read(cx);
4873 self.selections
4874 .iter()
4875 .min_by_key(|s| s.id)
4876 .map(|selection| self.resolve_selection(selection, &snapshot))
4877 .or_else(|| self.pending_selection(&snapshot))
4878 .unwrap()
4879 }
4880
4881 pub fn newest_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
4882 &self,
4883 cx: &AppContext,
4884 ) -> Selection<D> {
4885 self.resolve_selection(
4886 self.newest_anchor_selection(),
4887 &self.buffer.read(cx).read(cx),
4888 )
4889 }
4890
4891 pub fn newest_selection_with_snapshot<D: TextDimension + Ord + Sub<D, Output = D>>(
4892 &self,
4893 snapshot: &MultiBufferSnapshot,
4894 ) -> Selection<D> {
4895 self.resolve_selection(self.newest_anchor_selection(), snapshot)
4896 }
4897
4898 pub fn newest_anchor_selection(&self) -> &Selection<Anchor> {
4899 self.pending_selection
4900 .as_ref()
4901 .map(|s| &s.selection)
4902 .or_else(|| self.selections.iter().max_by_key(|s| s.id))
4903 .unwrap()
4904 }
4905
4906 pub fn update_selections<T>(
4907 &mut self,
4908 mut selections: Vec<Selection<T>>,
4909 autoscroll: Option<Autoscroll>,
4910 cx: &mut ViewContext<Self>,
4911 ) where
4912 T: ToOffset + ToPoint + Ord + std::marker::Copy + std::fmt::Debug,
4913 {
4914 let buffer = self.buffer.read(cx).snapshot(cx);
4915 selections.sort_unstable_by_key(|s| s.start);
4916
4917 // Merge overlapping selections.
4918 let mut i = 1;
4919 while i < selections.len() {
4920 if selections[i - 1].end >= selections[i].start {
4921 let removed = selections.remove(i);
4922 if removed.start < selections[i - 1].start {
4923 selections[i - 1].start = removed.start;
4924 }
4925 if removed.end > selections[i - 1].end {
4926 selections[i - 1].end = removed.end;
4927 }
4928 } else {
4929 i += 1;
4930 }
4931 }
4932
4933 if let Some(autoscroll) = autoscroll {
4934 self.request_autoscroll(autoscroll, cx);
4935 }
4936
4937 self.set_selections(
4938 Arc::from_iter(selections.into_iter().map(|selection| {
4939 let end_bias = if selection.end > selection.start {
4940 Bias::Left
4941 } else {
4942 Bias::Right
4943 };
4944 Selection {
4945 id: selection.id,
4946 start: buffer.anchor_after(selection.start),
4947 end: buffer.anchor_at(selection.end, end_bias),
4948 reversed: selection.reversed,
4949 goal: selection.goal,
4950 }
4951 })),
4952 None,
4953 true,
4954 cx,
4955 );
4956 }
4957
4958 pub fn set_selections_from_remote(
4959 &mut self,
4960 mut selections: Vec<Selection<Anchor>>,
4961 cx: &mut ViewContext<Self>,
4962 ) {
4963 let buffer = self.buffer.read(cx);
4964 let buffer = buffer.read(cx);
4965 selections.sort_by(|a, b| {
4966 a.start
4967 .cmp(&b.start, &*buffer)
4968 .then_with(|| b.end.cmp(&a.end, &*buffer))
4969 });
4970
4971 // Merge overlapping selections
4972 let mut i = 1;
4973 while i < selections.len() {
4974 if selections[i - 1]
4975 .end
4976 .cmp(&selections[i].start, &*buffer)
4977 .is_ge()
4978 {
4979 let removed = selections.remove(i);
4980 if removed
4981 .start
4982 .cmp(&selections[i - 1].start, &*buffer)
4983 .is_lt()
4984 {
4985 selections[i - 1].start = removed.start;
4986 }
4987 if removed.end.cmp(&selections[i - 1].end, &*buffer).is_gt() {
4988 selections[i - 1].end = removed.end;
4989 }
4990 } else {
4991 i += 1;
4992 }
4993 }
4994
4995 drop(buffer);
4996 self.set_selections(selections.into(), None, false, cx);
4997 }
4998
4999 /// Compute new ranges for any selections that were located in excerpts that have
5000 /// since been removed.
5001 ///
5002 /// Returns a `HashMap` indicating which selections whose former head position
5003 /// was no longer present. The keys of the map are selection ids. The values are
5004 /// the id of the new excerpt where the head of the selection has been moved.
5005 pub fn refresh_selections(&mut self, cx: &mut ViewContext<Self>) -> HashMap<usize, ExcerptId> {
5006 let snapshot = self.buffer.read(cx).read(cx);
5007 let mut selections_with_lost_position = HashMap::default();
5008
5009 let mut pending_selection = self.pending_selection.take();
5010 if let Some(pending) = pending_selection.as_mut() {
5011 let anchors =
5012 snapshot.refresh_anchors([&pending.selection.start, &pending.selection.end]);
5013 let (_, start, kept_start) = anchors[0].clone();
5014 let (_, end, kept_end) = anchors[1].clone();
5015 let kept_head = if pending.selection.reversed {
5016 kept_start
5017 } else {
5018 kept_end
5019 };
5020 if !kept_head {
5021 selections_with_lost_position.insert(
5022 pending.selection.id,
5023 pending.selection.head().excerpt_id.clone(),
5024 );
5025 }
5026
5027 pending.selection.start = start;
5028 pending.selection.end = end;
5029 }
5030
5031 let anchors_with_status = snapshot.refresh_anchors(
5032 self.selections
5033 .iter()
5034 .flat_map(|selection| [&selection.start, &selection.end]),
5035 );
5036 self.selections = anchors_with_status
5037 .chunks(2)
5038 .map(|selection_anchors| {
5039 let (anchor_ix, start, kept_start) = selection_anchors[0].clone();
5040 let (_, end, kept_end) = selection_anchors[1].clone();
5041 let selection = &self.selections[anchor_ix / 2];
5042 let kept_head = if selection.reversed {
5043 kept_start
5044 } else {
5045 kept_end
5046 };
5047 if !kept_head {
5048 selections_with_lost_position
5049 .insert(selection.id, selection.head().excerpt_id.clone());
5050 }
5051
5052 Selection {
5053 id: selection.id,
5054 start,
5055 end,
5056 reversed: selection.reversed,
5057 goal: selection.goal,
5058 }
5059 })
5060 .collect();
5061 drop(snapshot);
5062
5063 let new_selections = self.local_selections::<usize>(cx);
5064 if !new_selections.is_empty() {
5065 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
5066 }
5067 self.pending_selection = pending_selection;
5068
5069 selections_with_lost_position
5070 }
5071
5072 fn set_selections(
5073 &mut self,
5074 selections: Arc<[Selection<Anchor>]>,
5075 pending_selection: Option<PendingSelection>,
5076 local: bool,
5077 cx: &mut ViewContext<Self>,
5078 ) {
5079 assert!(
5080 !selections.is_empty() || pending_selection.is_some(),
5081 "must have at least one selection"
5082 );
5083
5084 let old_cursor_position = self.newest_anchor_selection().head();
5085
5086 self.selections = selections;
5087 self.pending_selection = pending_selection;
5088 if self.focused && self.leader_replica_id.is_none() {
5089 self.buffer.update(cx, |buffer, cx| {
5090 buffer.set_active_selections(&self.selections, cx)
5091 });
5092 }
5093
5094 let display_map = self
5095 .display_map
5096 .update(cx, |display_map, cx| display_map.snapshot(cx));
5097 let buffer = &display_map.buffer_snapshot;
5098 self.add_selections_state = None;
5099 self.select_next_state = None;
5100 self.select_larger_syntax_node_stack.clear();
5101 self.autoclose_stack.invalidate(&self.selections, &buffer);
5102 self.snippet_stack.invalidate(&self.selections, &buffer);
5103 self.invalidate_rename_range(&buffer, cx);
5104
5105 let new_cursor_position = self.newest_anchor_selection().head();
5106
5107 self.push_to_nav_history(
5108 old_cursor_position.clone(),
5109 Some(new_cursor_position.to_point(&buffer)),
5110 cx,
5111 );
5112
5113 if local {
5114 let completion_menu = match self.context_menu.as_mut() {
5115 Some(ContextMenu::Completions(menu)) => Some(menu),
5116 _ => {
5117 self.context_menu.take();
5118 None
5119 }
5120 };
5121
5122 if let Some(completion_menu) = completion_menu {
5123 let cursor_position = new_cursor_position.to_offset(&buffer);
5124 let (word_range, kind) =
5125 buffer.surrounding_word(completion_menu.initial_position.clone());
5126 if kind == Some(CharKind::Word)
5127 && word_range.to_inclusive().contains(&cursor_position)
5128 {
5129 let query = Self::completion_query(&buffer, cursor_position);
5130 cx.background()
5131 .block(completion_menu.filter(query.as_deref(), cx.background().clone()));
5132 self.show_completions(&ShowCompletions, cx);
5133 } else {
5134 self.hide_context_menu(cx);
5135 }
5136 }
5137
5138 if old_cursor_position.to_display_point(&display_map).row()
5139 != new_cursor_position.to_display_point(&display_map).row()
5140 {
5141 self.available_code_actions.take();
5142 }
5143 self.refresh_code_actions(cx);
5144 self.refresh_document_highlights(cx);
5145 }
5146
5147 self.pause_cursor_blinking(cx);
5148 cx.emit(Event::SelectionsChanged { local });
5149 }
5150
5151 pub fn request_autoscroll(&mut self, autoscroll: Autoscroll, cx: &mut ViewContext<Self>) {
5152 self.autoscroll_request = Some((autoscroll, true));
5153 cx.notify();
5154 }
5155
5156 fn request_autoscroll_remotely(&mut self, autoscroll: Autoscroll, cx: &mut ViewContext<Self>) {
5157 self.autoscroll_request = Some((autoscroll, false));
5158 cx.notify();
5159 }
5160
5161 pub fn transact(
5162 &mut self,
5163 cx: &mut ViewContext<Self>,
5164 update: impl FnOnce(&mut Self, &mut ViewContext<Self>),
5165 ) {
5166 self.start_transaction_at(Instant::now(), cx);
5167 update(self, cx);
5168 self.end_transaction_at(Instant::now(), cx);
5169 }
5170
5171 fn start_transaction_at(&mut self, now: Instant, cx: &mut ViewContext<Self>) {
5172 self.end_selection(cx);
5173 if let Some(tx_id) = self
5174 .buffer
5175 .update(cx, |buffer, cx| buffer.start_transaction_at(now, cx))
5176 {
5177 self.selection_history
5178 .insert(tx_id, (self.selections.clone(), None));
5179 }
5180 }
5181
5182 fn end_transaction_at(&mut self, now: Instant, cx: &mut ViewContext<Self>) {
5183 if let Some(tx_id) = self
5184 .buffer
5185 .update(cx, |buffer, cx| buffer.end_transaction_at(now, cx))
5186 {
5187 if let Some((_, end_selections)) = self.selection_history.get_mut(&tx_id) {
5188 *end_selections = Some(self.selections.clone());
5189 } else {
5190 log::error!("unexpectedly ended a transaction that wasn't started by this editor");
5191 }
5192
5193 cx.emit(Event::Edited);
5194 }
5195 }
5196
5197 pub fn page_up(&mut self, _: &PageUp, _: &mut ViewContext<Self>) {
5198 log::info!("Editor::page_up");
5199 }
5200
5201 pub fn page_down(&mut self, _: &PageDown, _: &mut ViewContext<Self>) {
5202 log::info!("Editor::page_down");
5203 }
5204
5205 pub fn fold(&mut self, _: &Fold, cx: &mut ViewContext<Self>) {
5206 let mut fold_ranges = Vec::new();
5207
5208 let selections = self.local_selections::<Point>(cx);
5209 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
5210 for selection in selections {
5211 let range = selection.display_range(&display_map).sorted();
5212 let buffer_start_row = range.start.to_point(&display_map).row;
5213
5214 for row in (0..=range.end.row()).rev() {
5215 if self.is_line_foldable(&display_map, row) && !display_map.is_line_folded(row) {
5216 let fold_range = self.foldable_range_for_line(&display_map, row);
5217 if fold_range.end.row >= buffer_start_row {
5218 fold_ranges.push(fold_range);
5219 if row <= range.start.row() {
5220 break;
5221 }
5222 }
5223 }
5224 }
5225 }
5226
5227 self.fold_ranges(fold_ranges, cx);
5228 }
5229
5230 pub fn unfold(&mut self, _: &Unfold, cx: &mut ViewContext<Self>) {
5231 let selections = self.local_selections::<Point>(cx);
5232 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
5233 let buffer = &display_map.buffer_snapshot;
5234 let ranges = selections
5235 .iter()
5236 .map(|s| {
5237 let range = s.display_range(&display_map).sorted();
5238 let mut start = range.start.to_point(&display_map);
5239 let mut end = range.end.to_point(&display_map);
5240 start.column = 0;
5241 end.column = buffer.line_len(end.row);
5242 start..end
5243 })
5244 .collect::<Vec<_>>();
5245 self.unfold_ranges(ranges, cx);
5246 }
5247
5248 fn is_line_foldable(&self, display_map: &DisplaySnapshot, display_row: u32) -> bool {
5249 let max_point = display_map.max_point();
5250 if display_row >= max_point.row() {
5251 false
5252 } else {
5253 let (start_indent, is_blank) = display_map.line_indent(display_row);
5254 if is_blank {
5255 false
5256 } else {
5257 for display_row in display_row + 1..=max_point.row() {
5258 let (indent, is_blank) = display_map.line_indent(display_row);
5259 if !is_blank {
5260 return indent > start_indent;
5261 }
5262 }
5263 false
5264 }
5265 }
5266 }
5267
5268 fn foldable_range_for_line(
5269 &self,
5270 display_map: &DisplaySnapshot,
5271 start_row: u32,
5272 ) -> Range<Point> {
5273 let max_point = display_map.max_point();
5274
5275 let (start_indent, _) = display_map.line_indent(start_row);
5276 let start = DisplayPoint::new(start_row, display_map.line_len(start_row));
5277 let mut end = None;
5278 for row in start_row + 1..=max_point.row() {
5279 let (indent, is_blank) = display_map.line_indent(row);
5280 if !is_blank && indent <= start_indent {
5281 end = Some(DisplayPoint::new(row - 1, display_map.line_len(row - 1)));
5282 break;
5283 }
5284 }
5285
5286 let end = end.unwrap_or(max_point);
5287 return start.to_point(display_map)..end.to_point(display_map);
5288 }
5289
5290 pub fn fold_selected_ranges(&mut self, _: &FoldSelectedRanges, cx: &mut ViewContext<Self>) {
5291 let selections = self.local_selections::<Point>(cx);
5292 let ranges = selections.into_iter().map(|s| s.start..s.end);
5293 self.fold_ranges(ranges, cx);
5294 }
5295
5296 fn fold_ranges<T: ToOffset>(
5297 &mut self,
5298 ranges: impl IntoIterator<Item = Range<T>>,
5299 cx: &mut ViewContext<Self>,
5300 ) {
5301 let mut ranges = ranges.into_iter().peekable();
5302 if ranges.peek().is_some() {
5303 self.display_map.update(cx, |map, cx| map.fold(ranges, cx));
5304 self.request_autoscroll(Autoscroll::Fit, cx);
5305 cx.notify();
5306 }
5307 }
5308
5309 fn unfold_ranges<T: ToOffset>(&mut self, ranges: Vec<Range<T>>, cx: &mut ViewContext<Self>) {
5310 if !ranges.is_empty() {
5311 self.display_map
5312 .update(cx, |map, cx| map.unfold(ranges, cx));
5313 self.request_autoscroll(Autoscroll::Fit, cx);
5314 cx.notify();
5315 }
5316 }
5317
5318 pub fn insert_blocks(
5319 &mut self,
5320 blocks: impl IntoIterator<Item = BlockProperties<Anchor>>,
5321 cx: &mut ViewContext<Self>,
5322 ) -> Vec<BlockId> {
5323 let blocks = self
5324 .display_map
5325 .update(cx, |display_map, cx| display_map.insert_blocks(blocks, cx));
5326 self.request_autoscroll(Autoscroll::Fit, cx);
5327 blocks
5328 }
5329
5330 pub fn replace_blocks(
5331 &mut self,
5332 blocks: HashMap<BlockId, RenderBlock>,
5333 cx: &mut ViewContext<Self>,
5334 ) {
5335 self.display_map
5336 .update(cx, |display_map, _| display_map.replace_blocks(blocks));
5337 self.request_autoscroll(Autoscroll::Fit, cx);
5338 }
5339
5340 pub fn remove_blocks(&mut self, block_ids: HashSet<BlockId>, cx: &mut ViewContext<Self>) {
5341 self.display_map.update(cx, |display_map, cx| {
5342 display_map.remove_blocks(block_ids, cx)
5343 });
5344 }
5345
5346 pub fn longest_row(&self, cx: &mut MutableAppContext) -> u32 {
5347 self.display_map
5348 .update(cx, |map, cx| map.snapshot(cx))
5349 .longest_row()
5350 }
5351
5352 pub fn max_point(&self, cx: &mut MutableAppContext) -> DisplayPoint {
5353 self.display_map
5354 .update(cx, |map, cx| map.snapshot(cx))
5355 .max_point()
5356 }
5357
5358 pub fn text(&self, cx: &AppContext) -> String {
5359 self.buffer.read(cx).read(cx).text()
5360 }
5361
5362 pub fn set_text(&mut self, text: impl Into<String>, cx: &mut ViewContext<Self>) {
5363 self.transact(cx, |this, cx| {
5364 this.buffer
5365 .read(cx)
5366 .as_singleton()
5367 .expect("you can only call set_text on editors for singleton buffers")
5368 .update(cx, |buffer, cx| buffer.set_text(text, cx));
5369 });
5370 }
5371
5372 pub fn display_text(&self, cx: &mut MutableAppContext) -> String {
5373 self.display_map
5374 .update(cx, |map, cx| map.snapshot(cx))
5375 .text()
5376 }
5377
5378 pub fn soft_wrap_mode(&self, cx: &AppContext) -> SoftWrap {
5379 let language = self.language(cx);
5380 let settings = cx.global::<Settings>();
5381 let mode = self
5382 .soft_wrap_mode_override
5383 .unwrap_or_else(|| settings.soft_wrap(language));
5384 match mode {
5385 settings::SoftWrap::None => SoftWrap::None,
5386 settings::SoftWrap::EditorWidth => SoftWrap::EditorWidth,
5387 settings::SoftWrap::PreferredLineLength => {
5388 SoftWrap::Column(settings.preferred_line_length(language))
5389 }
5390 }
5391 }
5392
5393 pub fn set_soft_wrap_mode(&mut self, mode: settings::SoftWrap, cx: &mut ViewContext<Self>) {
5394 self.soft_wrap_mode_override = Some(mode);
5395 cx.notify();
5396 }
5397
5398 pub fn set_wrap_width(&self, width: Option<f32>, cx: &mut MutableAppContext) -> bool {
5399 self.display_map
5400 .update(cx, |map, cx| map.set_wrap_width(width, cx))
5401 }
5402
5403 pub fn highlight_rows(&mut self, rows: Option<Range<u32>>) {
5404 self.highlighted_rows = rows;
5405 }
5406
5407 pub fn highlighted_rows(&self) -> Option<Range<u32>> {
5408 self.highlighted_rows.clone()
5409 }
5410
5411 pub fn highlight_background<T: 'static>(
5412 &mut self,
5413 ranges: Vec<Range<Anchor>>,
5414 color: Color,
5415 cx: &mut ViewContext<Self>,
5416 ) {
5417 self.background_highlights
5418 .insert(TypeId::of::<T>(), (color, ranges));
5419 cx.notify();
5420 }
5421
5422 pub fn clear_background_highlights<T: 'static>(
5423 &mut self,
5424 cx: &mut ViewContext<Self>,
5425 ) -> Option<(Color, Vec<Range<Anchor>>)> {
5426 cx.notify();
5427 self.background_highlights.remove(&TypeId::of::<T>())
5428 }
5429
5430 #[cfg(feature = "test-support")]
5431 pub fn all_background_highlights(
5432 &mut self,
5433 cx: &mut ViewContext<Self>,
5434 ) -> Vec<(Range<DisplayPoint>, Color)> {
5435 let snapshot = self.snapshot(cx);
5436 let buffer = &snapshot.buffer_snapshot;
5437 let start = buffer.anchor_before(0);
5438 let end = buffer.anchor_after(buffer.len());
5439 self.background_highlights_in_range(start..end, &snapshot)
5440 }
5441
5442 pub fn background_highlights_for_type<T: 'static>(&self) -> Option<(Color, &[Range<Anchor>])> {
5443 self.background_highlights
5444 .get(&TypeId::of::<T>())
5445 .map(|(color, ranges)| (*color, ranges.as_slice()))
5446 }
5447
5448 pub fn background_highlights_in_range(
5449 &self,
5450 search_range: Range<Anchor>,
5451 display_snapshot: &DisplaySnapshot,
5452 ) -> Vec<(Range<DisplayPoint>, Color)> {
5453 let mut results = Vec::new();
5454 let buffer = &display_snapshot.buffer_snapshot;
5455 for (color, ranges) in self.background_highlights.values() {
5456 let start_ix = match ranges.binary_search_by(|probe| {
5457 let cmp = probe.end.cmp(&search_range.start, &buffer);
5458 if cmp.is_gt() {
5459 Ordering::Greater
5460 } else {
5461 Ordering::Less
5462 }
5463 }) {
5464 Ok(i) | Err(i) => i,
5465 };
5466 for range in &ranges[start_ix..] {
5467 if range.start.cmp(&search_range.end, &buffer).is_ge() {
5468 break;
5469 }
5470 let start = range
5471 .start
5472 .to_point(buffer)
5473 .to_display_point(display_snapshot);
5474 let end = range
5475 .end
5476 .to_point(buffer)
5477 .to_display_point(display_snapshot);
5478 results.push((start..end, *color))
5479 }
5480 }
5481 results
5482 }
5483
5484 pub fn highlight_text<T: 'static>(
5485 &mut self,
5486 ranges: Vec<Range<Anchor>>,
5487 style: HighlightStyle,
5488 cx: &mut ViewContext<Self>,
5489 ) {
5490 self.display_map.update(cx, |map, _| {
5491 map.highlight_text(TypeId::of::<T>(), ranges, style)
5492 });
5493 cx.notify();
5494 }
5495
5496 pub fn clear_text_highlights<T: 'static>(
5497 &mut self,
5498 cx: &mut ViewContext<Self>,
5499 ) -> Option<Arc<(HighlightStyle, Vec<Range<Anchor>>)>> {
5500 cx.notify();
5501 self.display_map
5502 .update(cx, |map, _| map.clear_text_highlights(TypeId::of::<T>()))
5503 }
5504
5505 fn next_blink_epoch(&mut self) -> usize {
5506 self.blink_epoch += 1;
5507 self.blink_epoch
5508 }
5509
5510 fn pause_cursor_blinking(&mut self, cx: &mut ViewContext<Self>) {
5511 if !self.focused {
5512 return;
5513 }
5514
5515 self.show_local_cursors = true;
5516 cx.notify();
5517
5518 let epoch = self.next_blink_epoch();
5519 cx.spawn(|this, mut cx| {
5520 let this = this.downgrade();
5521 async move {
5522 Timer::after(CURSOR_BLINK_INTERVAL).await;
5523 if let Some(this) = this.upgrade(&cx) {
5524 this.update(&mut cx, |this, cx| this.resume_cursor_blinking(epoch, cx))
5525 }
5526 }
5527 })
5528 .detach();
5529 }
5530
5531 fn resume_cursor_blinking(&mut self, epoch: usize, cx: &mut ViewContext<Self>) {
5532 if epoch == self.blink_epoch {
5533 self.blinking_paused = false;
5534 self.blink_cursors(epoch, cx);
5535 }
5536 }
5537
5538 fn blink_cursors(&mut self, epoch: usize, cx: &mut ViewContext<Self>) {
5539 if epoch == self.blink_epoch && self.focused && !self.blinking_paused {
5540 self.show_local_cursors = !self.show_local_cursors;
5541 cx.notify();
5542
5543 let epoch = self.next_blink_epoch();
5544 cx.spawn(|this, mut cx| {
5545 let this = this.downgrade();
5546 async move {
5547 Timer::after(CURSOR_BLINK_INTERVAL).await;
5548 if let Some(this) = this.upgrade(&cx) {
5549 this.update(&mut cx, |this, cx| this.blink_cursors(epoch, cx));
5550 }
5551 }
5552 })
5553 .detach();
5554 }
5555 }
5556
5557 pub fn show_local_cursors(&self) -> bool {
5558 self.show_local_cursors && self.focused
5559 }
5560
5561 fn on_buffer_changed(&mut self, _: ModelHandle<MultiBuffer>, cx: &mut ViewContext<Self>) {
5562 cx.notify();
5563 }
5564
5565 fn on_buffer_event(
5566 &mut self,
5567 _: ModelHandle<MultiBuffer>,
5568 event: &language::Event,
5569 cx: &mut ViewContext<Self>,
5570 ) {
5571 match event {
5572 language::Event::Edited => {
5573 self.refresh_active_diagnostics(cx);
5574 self.refresh_code_actions(cx);
5575 cx.emit(Event::BufferEdited);
5576 }
5577 language::Event::Dirtied => cx.emit(Event::Dirtied),
5578 language::Event::Saved => cx.emit(Event::Saved),
5579 language::Event::FileHandleChanged => cx.emit(Event::TitleChanged),
5580 language::Event::Reloaded => cx.emit(Event::TitleChanged),
5581 language::Event::Closed => cx.emit(Event::Closed),
5582 language::Event::DiagnosticsUpdated => {
5583 self.refresh_active_diagnostics(cx);
5584 }
5585 _ => {}
5586 }
5587 }
5588
5589 fn on_display_map_changed(&mut self, _: ModelHandle<DisplayMap>, cx: &mut ViewContext<Self>) {
5590 cx.notify();
5591 }
5592
5593 pub fn set_searchable(&mut self, searchable: bool) {
5594 self.searchable = searchable;
5595 }
5596
5597 pub fn searchable(&self) -> bool {
5598 self.searchable
5599 }
5600
5601 fn open_excerpts(workspace: &mut Workspace, _: &OpenExcerpts, cx: &mut ViewContext<Workspace>) {
5602 let active_item = workspace.active_item(cx);
5603 let editor_handle = if let Some(editor) = active_item
5604 .as_ref()
5605 .and_then(|item| item.act_as::<Self>(cx))
5606 {
5607 editor
5608 } else {
5609 cx.propagate_action();
5610 return;
5611 };
5612
5613 let editor = editor_handle.read(cx);
5614 let buffer = editor.buffer.read(cx);
5615 if buffer.is_singleton() {
5616 cx.propagate_action();
5617 return;
5618 }
5619
5620 let mut new_selections_by_buffer = HashMap::default();
5621 for selection in editor.local_selections::<usize>(cx) {
5622 for (buffer, mut range) in
5623 buffer.range_to_buffer_ranges(selection.start..selection.end, cx)
5624 {
5625 if selection.reversed {
5626 mem::swap(&mut range.start, &mut range.end);
5627 }
5628 new_selections_by_buffer
5629 .entry(buffer)
5630 .or_insert(Vec::new())
5631 .push(range)
5632 }
5633 }
5634
5635 editor_handle.update(cx, |editor, cx| {
5636 editor.push_to_nav_history(editor.newest_anchor_selection().head(), None, cx);
5637 });
5638 let nav_history = workspace.active_pane().read(cx).nav_history().clone();
5639 nav_history.borrow_mut().disable();
5640
5641 // We defer the pane interaction because we ourselves are a workspace item
5642 // and activating a new item causes the pane to call a method on us reentrantly,
5643 // which panics if we're on the stack.
5644 cx.defer(move |workspace, cx| {
5645 workspace.activate_next_pane(cx);
5646
5647 for (buffer, ranges) in new_selections_by_buffer.into_iter() {
5648 let editor = workspace.open_project_item::<Self>(buffer, cx);
5649 editor.update(cx, |editor, cx| {
5650 editor.select_ranges(ranges, Some(Autoscroll::Newest), cx);
5651 });
5652 }
5653
5654 nav_history.borrow_mut().enable();
5655 });
5656 }
5657}
5658
5659impl EditorSnapshot {
5660 pub fn is_focused(&self) -> bool {
5661 self.is_focused
5662 }
5663
5664 pub fn placeholder_text(&self) -> Option<&Arc<str>> {
5665 self.placeholder_text.as_ref()
5666 }
5667
5668 pub fn scroll_position(&self) -> Vector2F {
5669 compute_scroll_position(
5670 &self.display_snapshot,
5671 self.scroll_position,
5672 &self.scroll_top_anchor,
5673 )
5674 }
5675}
5676
5677impl Deref for EditorSnapshot {
5678 type Target = DisplaySnapshot;
5679
5680 fn deref(&self) -> &Self::Target {
5681 &self.display_snapshot
5682 }
5683}
5684
5685fn compute_scroll_position(
5686 snapshot: &DisplaySnapshot,
5687 mut scroll_position: Vector2F,
5688 scroll_top_anchor: &Anchor,
5689) -> Vector2F {
5690 if *scroll_top_anchor != Anchor::min() {
5691 let scroll_top = scroll_top_anchor.to_display_point(snapshot).row() as f32;
5692 scroll_position.set_y(scroll_top + scroll_position.y());
5693 } else {
5694 scroll_position.set_y(0.);
5695 }
5696 scroll_position
5697}
5698
5699#[derive(Copy, Clone, Debug, PartialEq, Eq)]
5700pub enum Event {
5701 Activate,
5702 BufferEdited,
5703 Edited,
5704 Blurred,
5705 Dirtied,
5706 Saved,
5707 TitleChanged,
5708 SelectionsChanged { local: bool },
5709 ScrollPositionChanged { local: bool },
5710 Closed,
5711}
5712
5713pub struct EditorFocused(pub ViewHandle<Editor>);
5714pub struct EditorBlurred(pub ViewHandle<Editor>);
5715pub struct EditorReleased(pub WeakViewHandle<Editor>);
5716
5717impl Entity for Editor {
5718 type Event = Event;
5719
5720 fn release(&mut self, cx: &mut MutableAppContext) {
5721 cx.emit_global(EditorReleased(self.handle.clone()));
5722 }
5723}
5724
5725impl View for Editor {
5726 fn render(&mut self, cx: &mut RenderContext<Self>) -> ElementBox {
5727 let style = self.style(cx);
5728 self.display_map.update(cx, |map, cx| {
5729 map.set_font(style.text.font_id, style.text.font_size, cx)
5730 });
5731 EditorElement::new(self.handle.clone(), style.clone(), self.cursor_shape).boxed()
5732 }
5733
5734 fn ui_name() -> &'static str {
5735 "Editor"
5736 }
5737
5738 fn on_focus(&mut self, cx: &mut ViewContext<Self>) {
5739 let focused_event = EditorFocused(cx.handle());
5740 cx.emit_global(focused_event);
5741 if let Some(rename) = self.pending_rename.as_ref() {
5742 cx.focus(&rename.editor);
5743 } else {
5744 self.focused = true;
5745 self.blink_cursors(self.blink_epoch, cx);
5746 self.buffer.update(cx, |buffer, cx| {
5747 buffer.finalize_last_transaction(cx);
5748 if self.leader_replica_id.is_none() {
5749 buffer.set_active_selections(&self.selections, cx);
5750 }
5751 });
5752 }
5753 }
5754
5755 fn on_blur(&mut self, cx: &mut ViewContext<Self>) {
5756 let blurred_event = EditorBlurred(cx.handle());
5757 cx.emit_global(blurred_event);
5758 self.focused = false;
5759 self.buffer
5760 .update(cx, |buffer, cx| buffer.remove_active_selections(cx));
5761 self.hide_context_menu(cx);
5762 cx.emit(Event::Blurred);
5763 cx.notify();
5764 }
5765
5766 fn keymap_context(&self, _: &AppContext) -> gpui::keymap::Context {
5767 let mut context = Self::default_keymap_context();
5768 let mode = match self.mode {
5769 EditorMode::SingleLine => "single_line",
5770 EditorMode::AutoHeight { .. } => "auto_height",
5771 EditorMode::Full => "full",
5772 };
5773 context.map.insert("mode".into(), mode.into());
5774 if self.pending_rename.is_some() {
5775 context.set.insert("renaming".into());
5776 }
5777 match self.context_menu.as_ref() {
5778 Some(ContextMenu::Completions(_)) => {
5779 context.set.insert("showing_completions".into());
5780 }
5781 Some(ContextMenu::CodeActions(_)) => {
5782 context.set.insert("showing_code_actions".into());
5783 }
5784 None => {}
5785 }
5786
5787 for layer in self.keymap_context_layers.values() {
5788 context.extend(layer);
5789 }
5790
5791 context
5792 }
5793}
5794
5795fn build_style(
5796 settings: &Settings,
5797 get_field_editor_theme: Option<GetFieldEditorTheme>,
5798 override_text_style: Option<&OverrideTextStyle>,
5799 cx: &AppContext,
5800) -> EditorStyle {
5801 let font_cache = cx.font_cache();
5802
5803 let mut theme = settings.theme.editor.clone();
5804 let mut style = if let Some(get_field_editor_theme) = get_field_editor_theme {
5805 let field_editor_theme = get_field_editor_theme(&settings.theme);
5806 theme.text_color = field_editor_theme.text.color;
5807 theme.selection = field_editor_theme.selection;
5808 theme.background = field_editor_theme
5809 .container
5810 .background_color
5811 .unwrap_or_default();
5812 EditorStyle {
5813 text: field_editor_theme.text,
5814 placeholder_text: field_editor_theme.placeholder_text,
5815 theme,
5816 }
5817 } else {
5818 let font_family_id = settings.buffer_font_family;
5819 let font_family_name = cx.font_cache().family_name(font_family_id).unwrap();
5820 let font_properties = Default::default();
5821 let font_id = font_cache
5822 .select_font(font_family_id, &font_properties)
5823 .unwrap();
5824 let font_size = settings.buffer_font_size;
5825 EditorStyle {
5826 text: TextStyle {
5827 color: settings.theme.editor.text_color,
5828 font_family_name,
5829 font_family_id,
5830 font_id,
5831 font_size,
5832 font_properties,
5833 underline: Default::default(),
5834 },
5835 placeholder_text: None,
5836 theme,
5837 }
5838 };
5839
5840 if let Some(highlight_style) = override_text_style.and_then(|build_style| build_style(&style)) {
5841 if let Some(highlighted) = style
5842 .text
5843 .clone()
5844 .highlight(highlight_style, font_cache)
5845 .log_err()
5846 {
5847 style.text = highlighted;
5848 }
5849 }
5850
5851 style
5852}
5853
5854trait SelectionExt {
5855 fn offset_range(&self, buffer: &MultiBufferSnapshot) -> Range<usize>;
5856 fn point_range(&self, buffer: &MultiBufferSnapshot) -> Range<Point>;
5857 fn display_range(&self, map: &DisplaySnapshot) -> Range<DisplayPoint>;
5858 fn spanned_rows(&self, include_end_if_at_line_start: bool, map: &DisplaySnapshot)
5859 -> Range<u32>;
5860}
5861
5862impl<T: ToPoint + ToOffset> SelectionExt for Selection<T> {
5863 fn point_range(&self, buffer: &MultiBufferSnapshot) -> Range<Point> {
5864 let start = self.start.to_point(buffer);
5865 let end = self.end.to_point(buffer);
5866 if self.reversed {
5867 end..start
5868 } else {
5869 start..end
5870 }
5871 }
5872
5873 fn offset_range(&self, buffer: &MultiBufferSnapshot) -> Range<usize> {
5874 let start = self.start.to_offset(buffer);
5875 let end = self.end.to_offset(buffer);
5876 if self.reversed {
5877 end..start
5878 } else {
5879 start..end
5880 }
5881 }
5882
5883 fn display_range(&self, map: &DisplaySnapshot) -> Range<DisplayPoint> {
5884 let start = self
5885 .start
5886 .to_point(&map.buffer_snapshot)
5887 .to_display_point(map);
5888 let end = self
5889 .end
5890 .to_point(&map.buffer_snapshot)
5891 .to_display_point(map);
5892 if self.reversed {
5893 end..start
5894 } else {
5895 start..end
5896 }
5897 }
5898
5899 fn spanned_rows(
5900 &self,
5901 include_end_if_at_line_start: bool,
5902 map: &DisplaySnapshot,
5903 ) -> Range<u32> {
5904 let start = self.start.to_point(&map.buffer_snapshot);
5905 let mut end = self.end.to_point(&map.buffer_snapshot);
5906 if !include_end_if_at_line_start && start.row != end.row && end.column == 0 {
5907 end.row -= 1;
5908 }
5909
5910 let buffer_start = map.prev_line_boundary(start).0;
5911 let buffer_end = map.next_line_boundary(end).0;
5912 buffer_start.row..buffer_end.row + 1
5913 }
5914}
5915
5916impl<T: InvalidationRegion> InvalidationStack<T> {
5917 fn invalidate<S>(&mut self, selections: &[Selection<S>], buffer: &MultiBufferSnapshot)
5918 where
5919 S: Clone + ToOffset,
5920 {
5921 while let Some(region) = self.last() {
5922 let all_selections_inside_invalidation_ranges =
5923 if selections.len() == region.ranges().len() {
5924 selections
5925 .iter()
5926 .zip(region.ranges().iter().map(|r| r.to_offset(&buffer)))
5927 .all(|(selection, invalidation_range)| {
5928 let head = selection.head().to_offset(&buffer);
5929 invalidation_range.start <= head && invalidation_range.end >= head
5930 })
5931 } else {
5932 false
5933 };
5934
5935 if all_selections_inside_invalidation_ranges {
5936 break;
5937 } else {
5938 self.pop();
5939 }
5940 }
5941 }
5942}
5943
5944impl<T> Default for InvalidationStack<T> {
5945 fn default() -> Self {
5946 Self(Default::default())
5947 }
5948}
5949
5950impl<T> Deref for InvalidationStack<T> {
5951 type Target = Vec<T>;
5952
5953 fn deref(&self) -> &Self::Target {
5954 &self.0
5955 }
5956}
5957
5958impl<T> DerefMut for InvalidationStack<T> {
5959 fn deref_mut(&mut self) -> &mut Self::Target {
5960 &mut self.0
5961 }
5962}
5963
5964impl InvalidationRegion for BracketPairState {
5965 fn ranges(&self) -> &[Range<Anchor>] {
5966 &self.ranges
5967 }
5968}
5969
5970impl InvalidationRegion for SnippetState {
5971 fn ranges(&self) -> &[Range<Anchor>] {
5972 &self.ranges[self.active_index]
5973 }
5974}
5975
5976impl Deref for EditorStyle {
5977 type Target = theme::Editor;
5978
5979 fn deref(&self) -> &Self::Target {
5980 &self.theme
5981 }
5982}
5983
5984pub fn diagnostic_block_renderer(diagnostic: Diagnostic, is_valid: bool) -> RenderBlock {
5985 let mut highlighted_lines = Vec::new();
5986 for line in diagnostic.message.lines() {
5987 highlighted_lines.push(highlight_diagnostic_message(line));
5988 }
5989
5990 Arc::new(move |cx: &BlockContext| {
5991 let settings = cx.global::<Settings>();
5992 let theme = &settings.theme.editor;
5993 let style = diagnostic_style(diagnostic.severity, is_valid, theme);
5994 let font_size = (style.text_scale_factor * settings.buffer_font_size).round();
5995 Flex::column()
5996 .with_children(highlighted_lines.iter().map(|(line, highlights)| {
5997 Label::new(
5998 line.clone(),
5999 style.message.clone().with_font_size(font_size),
6000 )
6001 .with_highlights(highlights.clone())
6002 .contained()
6003 .with_margin_left(cx.anchor_x)
6004 .boxed()
6005 }))
6006 .aligned()
6007 .left()
6008 .boxed()
6009 })
6010}
6011
6012pub fn highlight_diagnostic_message(message: &str) -> (String, Vec<usize>) {
6013 let mut message_without_backticks = String::new();
6014 let mut prev_offset = 0;
6015 let mut inside_block = false;
6016 let mut highlights = Vec::new();
6017 for (match_ix, (offset, _)) in message
6018 .match_indices('`')
6019 .chain([(message.len(), "")])
6020 .enumerate()
6021 {
6022 message_without_backticks.push_str(&message[prev_offset..offset]);
6023 if inside_block {
6024 highlights.extend(prev_offset - match_ix..offset - match_ix);
6025 }
6026
6027 inside_block = !inside_block;
6028 prev_offset = offset + 1;
6029 }
6030
6031 (message_without_backticks, highlights)
6032}
6033
6034pub fn diagnostic_style(
6035 severity: DiagnosticSeverity,
6036 valid: bool,
6037 theme: &theme::Editor,
6038) -> DiagnosticStyle {
6039 match (severity, valid) {
6040 (DiagnosticSeverity::ERROR, true) => theme.error_diagnostic.clone(),
6041 (DiagnosticSeverity::ERROR, false) => theme.invalid_error_diagnostic.clone(),
6042 (DiagnosticSeverity::WARNING, true) => theme.warning_diagnostic.clone(),
6043 (DiagnosticSeverity::WARNING, false) => theme.invalid_warning_diagnostic.clone(),
6044 (DiagnosticSeverity::INFORMATION, true) => theme.information_diagnostic.clone(),
6045 (DiagnosticSeverity::INFORMATION, false) => theme.invalid_information_diagnostic.clone(),
6046 (DiagnosticSeverity::HINT, true) => theme.hint_diagnostic.clone(),
6047 (DiagnosticSeverity::HINT, false) => theme.invalid_hint_diagnostic.clone(),
6048 _ => theme.invalid_hint_diagnostic.clone(),
6049 }
6050}
6051
6052pub fn combine_syntax_and_fuzzy_match_highlights(
6053 text: &str,
6054 default_style: HighlightStyle,
6055 syntax_ranges: impl Iterator<Item = (Range<usize>, HighlightStyle)>,
6056 match_indices: &[usize],
6057) -> Vec<(Range<usize>, HighlightStyle)> {
6058 let mut result = Vec::new();
6059 let mut match_indices = match_indices.iter().copied().peekable();
6060
6061 for (range, mut syntax_highlight) in syntax_ranges.chain([(usize::MAX..0, Default::default())])
6062 {
6063 syntax_highlight.weight = None;
6064
6065 // Add highlights for any fuzzy match characters before the next
6066 // syntax highlight range.
6067 while let Some(&match_index) = match_indices.peek() {
6068 if match_index >= range.start {
6069 break;
6070 }
6071 match_indices.next();
6072 let end_index = char_ix_after(match_index, text);
6073 let mut match_style = default_style;
6074 match_style.weight = Some(fonts::Weight::BOLD);
6075 result.push((match_index..end_index, match_style));
6076 }
6077
6078 if range.start == usize::MAX {
6079 break;
6080 }
6081
6082 // Add highlights for any fuzzy match characters within the
6083 // syntax highlight range.
6084 let mut offset = range.start;
6085 while let Some(&match_index) = match_indices.peek() {
6086 if match_index >= range.end {
6087 break;
6088 }
6089
6090 match_indices.next();
6091 if match_index > offset {
6092 result.push((offset..match_index, syntax_highlight));
6093 }
6094
6095 let mut end_index = char_ix_after(match_index, text);
6096 while let Some(&next_match_index) = match_indices.peek() {
6097 if next_match_index == end_index && next_match_index < range.end {
6098 end_index = char_ix_after(next_match_index, text);
6099 match_indices.next();
6100 } else {
6101 break;
6102 }
6103 }
6104
6105 let mut match_style = syntax_highlight;
6106 match_style.weight = Some(fonts::Weight::BOLD);
6107 result.push((match_index..end_index, match_style));
6108 offset = end_index;
6109 }
6110
6111 if offset < range.end {
6112 result.push((offset..range.end, syntax_highlight));
6113 }
6114 }
6115
6116 fn char_ix_after(ix: usize, text: &str) -> usize {
6117 ix + text[ix..].chars().next().unwrap().len_utf8()
6118 }
6119
6120 result
6121}
6122
6123pub fn styled_runs_for_code_label<'a>(
6124 label: &'a CodeLabel,
6125 syntax_theme: &'a theme::SyntaxTheme,
6126) -> impl 'a + Iterator<Item = (Range<usize>, HighlightStyle)> {
6127 let fade_out = HighlightStyle {
6128 fade_out: Some(0.35),
6129 ..Default::default()
6130 };
6131
6132 let mut prev_end = label.filter_range.end;
6133 label
6134 .runs
6135 .iter()
6136 .enumerate()
6137 .flat_map(move |(ix, (range, highlight_id))| {
6138 let style = if let Some(style) = highlight_id.style(syntax_theme) {
6139 style
6140 } else {
6141 return Default::default();
6142 };
6143 let mut muted_style = style.clone();
6144 muted_style.highlight(fade_out);
6145
6146 let mut runs = SmallVec::<[(Range<usize>, HighlightStyle); 3]>::new();
6147 if range.start >= label.filter_range.end {
6148 if range.start > prev_end {
6149 runs.push((prev_end..range.start, fade_out));
6150 }
6151 runs.push((range.clone(), muted_style));
6152 } else if range.end <= label.filter_range.end {
6153 runs.push((range.clone(), style));
6154 } else {
6155 runs.push((range.start..label.filter_range.end, style));
6156 runs.push((label.filter_range.end..range.end, muted_style));
6157 }
6158 prev_end = cmp::max(prev_end, range.end);
6159
6160 if ix + 1 == label.runs.len() && label.text.len() > prev_end {
6161 runs.push((prev_end..label.text.len(), fade_out));
6162 }
6163
6164 runs
6165 })
6166}
6167
6168#[cfg(test)]
6169mod tests {
6170
6171 use super::*;
6172 use gpui::{
6173 geometry::rect::RectF,
6174 platform::{WindowBounds, WindowOptions},
6175 };
6176 use language::{LanguageConfig, LanguageServerConfig};
6177 use lsp::FakeLanguageServer;
6178 use project::FakeFs;
6179 use smol::stream::StreamExt;
6180 use std::{cell::RefCell, rc::Rc, time::Instant};
6181 use text::Point;
6182 use unindent::Unindent;
6183 use util::test::{marked_text_by, sample_text};
6184 use workspace::FollowableItem;
6185
6186 #[gpui::test]
6187 fn test_edit_events(cx: &mut MutableAppContext) {
6188 populate_settings(cx);
6189 let buffer = cx.add_model(|cx| language::Buffer::new(0, "123456", cx));
6190
6191 let events = Rc::new(RefCell::new(Vec::new()));
6192 let (_, editor1) = cx.add_window(Default::default(), {
6193 let events = events.clone();
6194 |cx| {
6195 cx.subscribe(&cx.handle(), move |_, _, event, _| {
6196 if matches!(event, Event::Edited | Event::BufferEdited | Event::Dirtied) {
6197 events.borrow_mut().push(("editor1", *event));
6198 }
6199 })
6200 .detach();
6201 Editor::for_buffer(buffer.clone(), None, cx)
6202 }
6203 });
6204 let (_, editor2) = cx.add_window(Default::default(), {
6205 let events = events.clone();
6206 |cx| {
6207 cx.subscribe(&cx.handle(), move |_, _, event, _| {
6208 if matches!(event, Event::Edited | Event::BufferEdited | Event::Dirtied) {
6209 events.borrow_mut().push(("editor2", *event));
6210 }
6211 })
6212 .detach();
6213 Editor::for_buffer(buffer.clone(), None, cx)
6214 }
6215 });
6216 assert_eq!(mem::take(&mut *events.borrow_mut()), []);
6217
6218 // Mutating editor 1 will emit an `Edited` event only for that editor.
6219 editor1.update(cx, |editor, cx| editor.insert("X", cx));
6220 assert_eq!(
6221 mem::take(&mut *events.borrow_mut()),
6222 [
6223 ("editor1", Event::Edited),
6224 ("editor1", Event::BufferEdited),
6225 ("editor2", Event::BufferEdited),
6226 ("editor1", Event::Dirtied),
6227 ("editor2", Event::Dirtied)
6228 ]
6229 );
6230
6231 // Mutating editor 2 will emit an `Edited` event only for that editor.
6232 editor2.update(cx, |editor, cx| editor.delete(&Delete, cx));
6233 assert_eq!(
6234 mem::take(&mut *events.borrow_mut()),
6235 [
6236 ("editor2", Event::Edited),
6237 ("editor1", Event::BufferEdited),
6238 ("editor2", Event::BufferEdited),
6239 ]
6240 );
6241
6242 // Undoing on editor 1 will emit an `Edited` event only for that editor.
6243 editor1.update(cx, |editor, cx| editor.undo(&Undo, cx));
6244 assert_eq!(
6245 mem::take(&mut *events.borrow_mut()),
6246 [
6247 ("editor1", Event::Edited),
6248 ("editor1", Event::BufferEdited),
6249 ("editor2", Event::BufferEdited),
6250 ]
6251 );
6252
6253 // Redoing on editor 1 will emit an `Edited` event only for that editor.
6254 editor1.update(cx, |editor, cx| editor.redo(&Redo, cx));
6255 assert_eq!(
6256 mem::take(&mut *events.borrow_mut()),
6257 [
6258 ("editor1", Event::Edited),
6259 ("editor1", Event::BufferEdited),
6260 ("editor2", Event::BufferEdited),
6261 ]
6262 );
6263
6264 // Undoing on editor 2 will emit an `Edited` event only for that editor.
6265 editor2.update(cx, |editor, cx| editor.undo(&Undo, cx));
6266 assert_eq!(
6267 mem::take(&mut *events.borrow_mut()),
6268 [
6269 ("editor2", Event::Edited),
6270 ("editor1", Event::BufferEdited),
6271 ("editor2", Event::BufferEdited),
6272 ]
6273 );
6274
6275 // Redoing on editor 2 will emit an `Edited` event only for that editor.
6276 editor2.update(cx, |editor, cx| editor.redo(&Redo, cx));
6277 assert_eq!(
6278 mem::take(&mut *events.borrow_mut()),
6279 [
6280 ("editor2", Event::Edited),
6281 ("editor1", Event::BufferEdited),
6282 ("editor2", Event::BufferEdited),
6283 ]
6284 );
6285
6286 // No event is emitted when the mutation is a no-op.
6287 editor2.update(cx, |editor, cx| {
6288 editor.select_ranges([0..0], None, cx);
6289 editor.backspace(&Backspace, cx);
6290 });
6291 assert_eq!(mem::take(&mut *events.borrow_mut()), []);
6292 }
6293
6294 #[gpui::test]
6295 fn test_undo_redo_with_selection_restoration(cx: &mut MutableAppContext) {
6296 populate_settings(cx);
6297 let mut now = Instant::now();
6298 let buffer = cx.add_model(|cx| language::Buffer::new(0, "123456", cx));
6299 let group_interval = buffer.read(cx).transaction_group_interval();
6300 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
6301 let (_, editor) = cx.add_window(Default::default(), |cx| build_editor(buffer.clone(), cx));
6302
6303 editor.update(cx, |editor, cx| {
6304 editor.start_transaction_at(now, cx);
6305 editor.select_ranges([2..4], None, cx);
6306 editor.insert("cd", cx);
6307 editor.end_transaction_at(now, cx);
6308 assert_eq!(editor.text(cx), "12cd56");
6309 assert_eq!(editor.selected_ranges(cx), vec![4..4]);
6310
6311 editor.start_transaction_at(now, cx);
6312 editor.select_ranges([4..5], None, cx);
6313 editor.insert("e", cx);
6314 editor.end_transaction_at(now, cx);
6315 assert_eq!(editor.text(cx), "12cde6");
6316 assert_eq!(editor.selected_ranges(cx), vec![5..5]);
6317
6318 now += group_interval + Duration::from_millis(1);
6319 editor.select_ranges([2..2], None, cx);
6320
6321 // Simulate an edit in another editor
6322 buffer.update(cx, |buffer, cx| {
6323 buffer.start_transaction_at(now, cx);
6324 buffer.edit([0..1], "a", cx);
6325 buffer.edit([1..1], "b", cx);
6326 buffer.end_transaction_at(now, cx);
6327 });
6328
6329 assert_eq!(editor.text(cx), "ab2cde6");
6330 assert_eq!(editor.selected_ranges(cx), vec![3..3]);
6331
6332 // Last transaction happened past the group interval in a different editor.
6333 // Undo it individually and don't restore selections.
6334 editor.undo(&Undo, cx);
6335 assert_eq!(editor.text(cx), "12cde6");
6336 assert_eq!(editor.selected_ranges(cx), vec![2..2]);
6337
6338 // First two transactions happened within the group interval in this editor.
6339 // Undo them together and restore selections.
6340 editor.undo(&Undo, cx);
6341 editor.undo(&Undo, cx); // Undo stack is empty here, so this is a no-op.
6342 assert_eq!(editor.text(cx), "123456");
6343 assert_eq!(editor.selected_ranges(cx), vec![0..0]);
6344
6345 // Redo the first two transactions together.
6346 editor.redo(&Redo, cx);
6347 assert_eq!(editor.text(cx), "12cde6");
6348 assert_eq!(editor.selected_ranges(cx), vec![5..5]);
6349
6350 // Redo the last transaction on its own.
6351 editor.redo(&Redo, cx);
6352 assert_eq!(editor.text(cx), "ab2cde6");
6353 assert_eq!(editor.selected_ranges(cx), vec![6..6]);
6354
6355 // Test empty transactions.
6356 editor.start_transaction_at(now, cx);
6357 editor.end_transaction_at(now, cx);
6358 editor.undo(&Undo, cx);
6359 assert_eq!(editor.text(cx), "12cde6");
6360 });
6361 }
6362
6363 #[gpui::test]
6364 fn test_selection_with_mouse(cx: &mut gpui::MutableAppContext) {
6365 populate_settings(cx);
6366
6367 let buffer = MultiBuffer::build_simple("aaaaaa\nbbbbbb\ncccccc\nddddddd\n", cx);
6368 let (_, editor) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
6369 editor.update(cx, |view, cx| {
6370 view.begin_selection(DisplayPoint::new(2, 2), false, 1, cx);
6371 });
6372 assert_eq!(
6373 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
6374 [DisplayPoint::new(2, 2)..DisplayPoint::new(2, 2)]
6375 );
6376
6377 editor.update(cx, |view, cx| {
6378 view.update_selection(DisplayPoint::new(3, 3), 0, Vector2F::zero(), cx);
6379 });
6380
6381 assert_eq!(
6382 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
6383 [DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3)]
6384 );
6385
6386 editor.update(cx, |view, cx| {
6387 view.update_selection(DisplayPoint::new(1, 1), 0, Vector2F::zero(), cx);
6388 });
6389
6390 assert_eq!(
6391 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
6392 [DisplayPoint::new(2, 2)..DisplayPoint::new(1, 1)]
6393 );
6394
6395 editor.update(cx, |view, cx| {
6396 view.end_selection(cx);
6397 view.update_selection(DisplayPoint::new(3, 3), 0, Vector2F::zero(), cx);
6398 });
6399
6400 assert_eq!(
6401 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
6402 [DisplayPoint::new(2, 2)..DisplayPoint::new(1, 1)]
6403 );
6404
6405 editor.update(cx, |view, cx| {
6406 view.begin_selection(DisplayPoint::new(3, 3), true, 1, cx);
6407 view.update_selection(DisplayPoint::new(0, 0), 0, Vector2F::zero(), cx);
6408 });
6409
6410 assert_eq!(
6411 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
6412 [
6413 DisplayPoint::new(2, 2)..DisplayPoint::new(1, 1),
6414 DisplayPoint::new(3, 3)..DisplayPoint::new(0, 0)
6415 ]
6416 );
6417
6418 editor.update(cx, |view, cx| {
6419 view.end_selection(cx);
6420 });
6421
6422 assert_eq!(
6423 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
6424 [DisplayPoint::new(3, 3)..DisplayPoint::new(0, 0)]
6425 );
6426 }
6427
6428 #[gpui::test]
6429 fn test_canceling_pending_selection(cx: &mut gpui::MutableAppContext) {
6430 populate_settings(cx);
6431 let buffer = MultiBuffer::build_simple("aaaaaa\nbbbbbb\ncccccc\ndddddd\n", cx);
6432 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
6433
6434 view.update(cx, |view, cx| {
6435 view.begin_selection(DisplayPoint::new(2, 2), false, 1, cx);
6436 assert_eq!(
6437 view.selected_display_ranges(cx),
6438 [DisplayPoint::new(2, 2)..DisplayPoint::new(2, 2)]
6439 );
6440 });
6441
6442 view.update(cx, |view, cx| {
6443 view.update_selection(DisplayPoint::new(3, 3), 0, Vector2F::zero(), cx);
6444 assert_eq!(
6445 view.selected_display_ranges(cx),
6446 [DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3)]
6447 );
6448 });
6449
6450 view.update(cx, |view, cx| {
6451 view.cancel(&Cancel, cx);
6452 view.update_selection(DisplayPoint::new(1, 1), 0, Vector2F::zero(), cx);
6453 assert_eq!(
6454 view.selected_display_ranges(cx),
6455 [DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3)]
6456 );
6457 });
6458 }
6459
6460 #[gpui::test]
6461 fn test_navigation_history(cx: &mut gpui::MutableAppContext) {
6462 populate_settings(cx);
6463 use workspace::Item;
6464 let nav_history = Rc::new(RefCell::new(workspace::NavHistory::default()));
6465 let buffer = MultiBuffer::build_simple(&sample_text(30, 5, 'a'), cx);
6466
6467 cx.add_window(Default::default(), |cx| {
6468 let mut editor = build_editor(buffer.clone(), cx);
6469 editor.nav_history = Some(ItemNavHistory::new(nav_history.clone(), &cx.handle()));
6470
6471 // Move the cursor a small distance.
6472 // Nothing is added to the navigation history.
6473 editor.select_display_ranges(&[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)], cx);
6474 editor.select_display_ranges(&[DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0)], cx);
6475 assert!(nav_history.borrow_mut().pop_backward().is_none());
6476
6477 // Move the cursor a large distance.
6478 // The history can jump back to the previous position.
6479 editor.select_display_ranges(&[DisplayPoint::new(13, 0)..DisplayPoint::new(13, 3)], cx);
6480 let nav_entry = nav_history.borrow_mut().pop_backward().unwrap();
6481 editor.navigate(nav_entry.data.unwrap(), cx);
6482 assert_eq!(nav_entry.item.id(), cx.view_id());
6483 assert_eq!(
6484 editor.selected_display_ranges(cx),
6485 &[DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0)]
6486 );
6487 assert!(nav_history.borrow_mut().pop_backward().is_none());
6488
6489 // Move the cursor a small distance via the mouse.
6490 // Nothing is added to the navigation history.
6491 editor.begin_selection(DisplayPoint::new(5, 0), false, 1, cx);
6492 editor.end_selection(cx);
6493 assert_eq!(
6494 editor.selected_display_ranges(cx),
6495 &[DisplayPoint::new(5, 0)..DisplayPoint::new(5, 0)]
6496 );
6497 assert!(nav_history.borrow_mut().pop_backward().is_none());
6498
6499 // Move the cursor a large distance via the mouse.
6500 // The history can jump back to the previous position.
6501 editor.begin_selection(DisplayPoint::new(15, 0), false, 1, cx);
6502 editor.end_selection(cx);
6503 assert_eq!(
6504 editor.selected_display_ranges(cx),
6505 &[DisplayPoint::new(15, 0)..DisplayPoint::new(15, 0)]
6506 );
6507 let nav_entry = nav_history.borrow_mut().pop_backward().unwrap();
6508 editor.navigate(nav_entry.data.unwrap(), cx);
6509 assert_eq!(nav_entry.item.id(), cx.view_id());
6510 assert_eq!(
6511 editor.selected_display_ranges(cx),
6512 &[DisplayPoint::new(5, 0)..DisplayPoint::new(5, 0)]
6513 );
6514 assert!(nav_history.borrow_mut().pop_backward().is_none());
6515
6516 editor
6517 });
6518 }
6519
6520 #[gpui::test]
6521 fn test_cancel(cx: &mut gpui::MutableAppContext) {
6522 populate_settings(cx);
6523 let buffer = MultiBuffer::build_simple("aaaaaa\nbbbbbb\ncccccc\ndddddd\n", cx);
6524 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
6525
6526 view.update(cx, |view, cx| {
6527 view.begin_selection(DisplayPoint::new(3, 4), false, 1, cx);
6528 view.update_selection(DisplayPoint::new(1, 1), 0, Vector2F::zero(), cx);
6529 view.end_selection(cx);
6530
6531 view.begin_selection(DisplayPoint::new(0, 1), true, 1, cx);
6532 view.update_selection(DisplayPoint::new(0, 3), 0, Vector2F::zero(), cx);
6533 view.end_selection(cx);
6534 assert_eq!(
6535 view.selected_display_ranges(cx),
6536 [
6537 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
6538 DisplayPoint::new(3, 4)..DisplayPoint::new(1, 1),
6539 ]
6540 );
6541 });
6542
6543 view.update(cx, |view, cx| {
6544 view.cancel(&Cancel, cx);
6545 assert_eq!(
6546 view.selected_display_ranges(cx),
6547 [DisplayPoint::new(3, 4)..DisplayPoint::new(1, 1)]
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(1, 1)..DisplayPoint::new(1, 1)]
6556 );
6557 });
6558 }
6559
6560 #[gpui::test]
6561 fn test_fold(cx: &mut gpui::MutableAppContext) {
6562 populate_settings(cx);
6563 let buffer = MultiBuffer::build_simple(
6564 &"
6565 impl Foo {
6566 // Hello!
6567
6568 fn a() {
6569 1
6570 }
6571
6572 fn b() {
6573 2
6574 }
6575
6576 fn c() {
6577 3
6578 }
6579 }
6580 "
6581 .unindent(),
6582 cx,
6583 );
6584 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer.clone(), cx));
6585
6586 view.update(cx, |view, cx| {
6587 view.select_display_ranges(&[DisplayPoint::new(8, 0)..DisplayPoint::new(12, 0)], cx);
6588 view.fold(&Fold, cx);
6589 assert_eq!(
6590 view.display_text(cx),
6591 "
6592 impl Foo {
6593 // Hello!
6594
6595 fn a() {
6596 1
6597 }
6598
6599 fn b() {…
6600 }
6601
6602 fn c() {…
6603 }
6604 }
6605 "
6606 .unindent(),
6607 );
6608
6609 view.fold(&Fold, cx);
6610 assert_eq!(
6611 view.display_text(cx),
6612 "
6613 impl Foo {…
6614 }
6615 "
6616 .unindent(),
6617 );
6618
6619 view.unfold(&Unfold, cx);
6620 assert_eq!(
6621 view.display_text(cx),
6622 "
6623 impl Foo {
6624 // Hello!
6625
6626 fn a() {
6627 1
6628 }
6629
6630 fn b() {…
6631 }
6632
6633 fn c() {…
6634 }
6635 }
6636 "
6637 .unindent(),
6638 );
6639
6640 view.unfold(&Unfold, cx);
6641 assert_eq!(view.display_text(cx), buffer.read(cx).read(cx).text());
6642 });
6643 }
6644
6645 #[gpui::test]
6646 fn test_move_cursor(cx: &mut gpui::MutableAppContext) {
6647 populate_settings(cx);
6648 let buffer = MultiBuffer::build_simple(&sample_text(6, 6, 'a'), cx);
6649 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer.clone(), cx));
6650
6651 buffer.update(cx, |buffer, cx| {
6652 buffer.edit(
6653 vec![
6654 Point::new(1, 0)..Point::new(1, 0),
6655 Point::new(1, 1)..Point::new(1, 1),
6656 ],
6657 "\t",
6658 cx,
6659 );
6660 });
6661
6662 view.update(cx, |view, cx| {
6663 assert_eq!(
6664 view.selected_display_ranges(cx),
6665 &[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)]
6666 );
6667
6668 view.move_down(&MoveDown, cx);
6669 assert_eq!(
6670 view.selected_display_ranges(cx),
6671 &[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)]
6672 );
6673
6674 view.move_right(&MoveRight, cx);
6675 assert_eq!(
6676 view.selected_display_ranges(cx),
6677 &[DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4)]
6678 );
6679
6680 view.move_left(&MoveLeft, cx);
6681 assert_eq!(
6682 view.selected_display_ranges(cx),
6683 &[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)]
6684 );
6685
6686 view.move_up(&MoveUp, cx);
6687 assert_eq!(
6688 view.selected_display_ranges(cx),
6689 &[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)]
6690 );
6691
6692 view.move_to_end(&MoveToEnd, cx);
6693 assert_eq!(
6694 view.selected_display_ranges(cx),
6695 &[DisplayPoint::new(5, 6)..DisplayPoint::new(5, 6)]
6696 );
6697
6698 view.move_to_beginning(&MoveToBeginning, cx);
6699 assert_eq!(
6700 view.selected_display_ranges(cx),
6701 &[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)]
6702 );
6703
6704 view.select_display_ranges(&[DisplayPoint::new(0, 1)..DisplayPoint::new(0, 2)], cx);
6705 view.select_to_beginning(&SelectToBeginning, cx);
6706 assert_eq!(
6707 view.selected_display_ranges(cx),
6708 &[DisplayPoint::new(0, 1)..DisplayPoint::new(0, 0)]
6709 );
6710
6711 view.select_to_end(&SelectToEnd, cx);
6712 assert_eq!(
6713 view.selected_display_ranges(cx),
6714 &[DisplayPoint::new(0, 1)..DisplayPoint::new(5, 6)]
6715 );
6716 });
6717 }
6718
6719 #[gpui::test]
6720 fn test_move_cursor_multibyte(cx: &mut gpui::MutableAppContext) {
6721 populate_settings(cx);
6722 let buffer = MultiBuffer::build_simple("ⓐⓑⓒⓓⓔ\nabcde\nαβγδε\n", cx);
6723 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer.clone(), cx));
6724
6725 assert_eq!('ⓐ'.len_utf8(), 3);
6726 assert_eq!('α'.len_utf8(), 2);
6727
6728 view.update(cx, |view, cx| {
6729 view.fold_ranges(
6730 vec![
6731 Point::new(0, 6)..Point::new(0, 12),
6732 Point::new(1, 2)..Point::new(1, 4),
6733 Point::new(2, 4)..Point::new(2, 8),
6734 ],
6735 cx,
6736 );
6737 assert_eq!(view.display_text(cx), "ⓐⓑ…ⓔ\nab…e\nαβ…ε\n");
6738
6739 view.move_right(&MoveRight, cx);
6740 assert_eq!(
6741 view.selected_display_ranges(cx),
6742 &[empty_range(0, "ⓐ".len())]
6743 );
6744 view.move_right(&MoveRight, cx);
6745 assert_eq!(
6746 view.selected_display_ranges(cx),
6747 &[empty_range(0, "ⓐⓑ".len())]
6748 );
6749 view.move_right(&MoveRight, cx);
6750 assert_eq!(
6751 view.selected_display_ranges(cx),
6752 &[empty_range(0, "ⓐⓑ…".len())]
6753 );
6754
6755 view.move_down(&MoveDown, cx);
6756 assert_eq!(
6757 view.selected_display_ranges(cx),
6758 &[empty_range(1, "ab…".len())]
6759 );
6760 view.move_left(&MoveLeft, cx);
6761 assert_eq!(
6762 view.selected_display_ranges(cx),
6763 &[empty_range(1, "ab".len())]
6764 );
6765 view.move_left(&MoveLeft, cx);
6766 assert_eq!(
6767 view.selected_display_ranges(cx),
6768 &[empty_range(1, "a".len())]
6769 );
6770
6771 view.move_down(&MoveDown, cx);
6772 assert_eq!(
6773 view.selected_display_ranges(cx),
6774 &[empty_range(2, "α".len())]
6775 );
6776 view.move_right(&MoveRight, cx);
6777 assert_eq!(
6778 view.selected_display_ranges(cx),
6779 &[empty_range(2, "αβ".len())]
6780 );
6781 view.move_right(&MoveRight, cx);
6782 assert_eq!(
6783 view.selected_display_ranges(cx),
6784 &[empty_range(2, "αβ…".len())]
6785 );
6786 view.move_right(&MoveRight, cx);
6787 assert_eq!(
6788 view.selected_display_ranges(cx),
6789 &[empty_range(2, "αβ…ε".len())]
6790 );
6791
6792 view.move_up(&MoveUp, cx);
6793 assert_eq!(
6794 view.selected_display_ranges(cx),
6795 &[empty_range(1, "ab…e".len())]
6796 );
6797 view.move_up(&MoveUp, cx);
6798 assert_eq!(
6799 view.selected_display_ranges(cx),
6800 &[empty_range(0, "ⓐⓑ…ⓔ".len())]
6801 );
6802 view.move_left(&MoveLeft, cx);
6803 assert_eq!(
6804 view.selected_display_ranges(cx),
6805 &[empty_range(0, "ⓐⓑ…".len())]
6806 );
6807 view.move_left(&MoveLeft, cx);
6808 assert_eq!(
6809 view.selected_display_ranges(cx),
6810 &[empty_range(0, "ⓐⓑ".len())]
6811 );
6812 view.move_left(&MoveLeft, cx);
6813 assert_eq!(
6814 view.selected_display_ranges(cx),
6815 &[empty_range(0, "ⓐ".len())]
6816 );
6817 });
6818 }
6819
6820 #[gpui::test]
6821 fn test_move_cursor_different_line_lengths(cx: &mut gpui::MutableAppContext) {
6822 populate_settings(cx);
6823 let buffer = MultiBuffer::build_simple("ⓐⓑⓒⓓⓔ\nabcd\nαβγ\nabcd\nⓐⓑⓒⓓⓔ\n", cx);
6824 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer.clone(), cx));
6825 view.update(cx, |view, cx| {
6826 view.select_display_ranges(&[empty_range(0, "ⓐⓑⓒⓓⓔ".len())], cx);
6827 view.move_down(&MoveDown, cx);
6828 assert_eq!(
6829 view.selected_display_ranges(cx),
6830 &[empty_range(1, "abcd".len())]
6831 );
6832
6833 view.move_down(&MoveDown, cx);
6834 assert_eq!(
6835 view.selected_display_ranges(cx),
6836 &[empty_range(2, "αβγ".len())]
6837 );
6838
6839 view.move_down(&MoveDown, cx);
6840 assert_eq!(
6841 view.selected_display_ranges(cx),
6842 &[empty_range(3, "abcd".len())]
6843 );
6844
6845 view.move_down(&MoveDown, cx);
6846 assert_eq!(
6847 view.selected_display_ranges(cx),
6848 &[empty_range(4, "ⓐⓑⓒⓓⓔ".len())]
6849 );
6850
6851 view.move_up(&MoveUp, cx);
6852 assert_eq!(
6853 view.selected_display_ranges(cx),
6854 &[empty_range(3, "abcd".len())]
6855 );
6856
6857 view.move_up(&MoveUp, cx);
6858 assert_eq!(
6859 view.selected_display_ranges(cx),
6860 &[empty_range(2, "αβγ".len())]
6861 );
6862 });
6863 }
6864
6865 #[gpui::test]
6866 fn test_beginning_end_of_line(cx: &mut gpui::MutableAppContext) {
6867 populate_settings(cx);
6868 let buffer = MultiBuffer::build_simple("abc\n def", cx);
6869 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
6870 view.update(cx, |view, cx| {
6871 view.select_display_ranges(
6872 &[
6873 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
6874 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4),
6875 ],
6876 cx,
6877 );
6878 });
6879
6880 view.update(cx, |view, cx| {
6881 view.move_to_beginning_of_line(&MoveToBeginningOfLine, cx);
6882 assert_eq!(
6883 view.selected_display_ranges(cx),
6884 &[
6885 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
6886 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
6887 ]
6888 );
6889 });
6890
6891 view.update(cx, |view, cx| {
6892 view.move_to_beginning_of_line(&MoveToBeginningOfLine, cx);
6893 assert_eq!(
6894 view.selected_display_ranges(cx),
6895 &[
6896 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
6897 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
6898 ]
6899 );
6900 });
6901
6902 view.update(cx, |view, cx| {
6903 view.move_to_beginning_of_line(&MoveToBeginningOfLine, cx);
6904 assert_eq!(
6905 view.selected_display_ranges(cx),
6906 &[
6907 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
6908 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
6909 ]
6910 );
6911 });
6912
6913 view.update(cx, |view, cx| {
6914 view.move_to_end_of_line(&MoveToEndOfLine, cx);
6915 assert_eq!(
6916 view.selected_display_ranges(cx),
6917 &[
6918 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
6919 DisplayPoint::new(1, 5)..DisplayPoint::new(1, 5),
6920 ]
6921 );
6922 });
6923
6924 // Moving to the end of line again is a no-op.
6925 view.update(cx, |view, cx| {
6926 view.move_to_end_of_line(&MoveToEndOfLine, cx);
6927 assert_eq!(
6928 view.selected_display_ranges(cx),
6929 &[
6930 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
6931 DisplayPoint::new(1, 5)..DisplayPoint::new(1, 5),
6932 ]
6933 );
6934 });
6935
6936 view.update(cx, |view, cx| {
6937 view.move_left(&MoveLeft, cx);
6938 view.select_to_beginning_of_line(&SelectToBeginningOfLine(true), cx);
6939 assert_eq!(
6940 view.selected_display_ranges(cx),
6941 &[
6942 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 0),
6943 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 2),
6944 ]
6945 );
6946 });
6947
6948 view.update(cx, |view, cx| {
6949 view.select_to_beginning_of_line(&SelectToBeginningOfLine(true), cx);
6950 assert_eq!(
6951 view.selected_display_ranges(cx),
6952 &[
6953 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 0),
6954 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 0),
6955 ]
6956 );
6957 });
6958
6959 view.update(cx, |view, cx| {
6960 view.select_to_beginning_of_line(&SelectToBeginningOfLine(true), cx);
6961 assert_eq!(
6962 view.selected_display_ranges(cx),
6963 &[
6964 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 0),
6965 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 2),
6966 ]
6967 );
6968 });
6969
6970 view.update(cx, |view, cx| {
6971 view.select_to_end_of_line(&SelectToEndOfLine(true), cx);
6972 assert_eq!(
6973 view.selected_display_ranges(cx),
6974 &[
6975 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 3),
6976 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 5),
6977 ]
6978 );
6979 });
6980
6981 view.update(cx, |view, cx| {
6982 view.delete_to_end_of_line(&DeleteToEndOfLine, cx);
6983 assert_eq!(view.display_text(cx), "ab\n de");
6984 assert_eq!(
6985 view.selected_display_ranges(cx),
6986 &[
6987 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
6988 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4),
6989 ]
6990 );
6991 });
6992
6993 view.update(cx, |view, cx| {
6994 view.delete_to_beginning_of_line(&DeleteToBeginningOfLine, cx);
6995 assert_eq!(view.display_text(cx), "\n");
6996 assert_eq!(
6997 view.selected_display_ranges(cx),
6998 &[
6999 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
7000 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
7001 ]
7002 );
7003 });
7004 }
7005
7006 #[gpui::test]
7007 fn test_prev_next_word_boundary(cx: &mut gpui::MutableAppContext) {
7008 populate_settings(cx);
7009 let buffer = MultiBuffer::build_simple("use std::str::{foo, bar}\n\n {baz.qux()}", cx);
7010 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
7011 view.update(cx, |view, cx| {
7012 view.select_display_ranges(
7013 &[
7014 DisplayPoint::new(0, 11)..DisplayPoint::new(0, 11),
7015 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 4),
7016 ],
7017 cx,
7018 );
7019
7020 view.move_to_previous_word_start(&MoveToPreviousWordStart, cx);
7021 assert_selection_ranges(
7022 "use std::<>str::{foo, bar}\n\n {[]baz.qux()}",
7023 vec![('<', '>'), ('[', ']')],
7024 view,
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_next_word_end(&MoveToNextWordEnd, 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_right(&MoveRight, cx);
7085 view.select_to_previous_word_start(&SelectToPreviousWordBoundary, cx);
7086 assert_selection_ranges(
7087 "use std::>s<tr::{foo, bar}\n\n {]b[az.qux()}",
7088 vec![('<', '>'), ('[', ']')],
7089 view,
7090 cx,
7091 );
7092
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_next_word_end(&SelectToNextWordBoundary, 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 }
7110
7111 #[gpui::test]
7112 fn test_prev_next_word_bounds_with_soft_wrap(cx: &mut gpui::MutableAppContext) {
7113 populate_settings(cx);
7114 let buffer = MultiBuffer::build_simple("use one::{\n two::three::four::five\n};", cx);
7115 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
7116
7117 view.update(cx, |view, cx| {
7118 view.set_wrap_width(Some(140.), cx);
7119 assert_eq!(
7120 view.display_text(cx),
7121 "use one::{\n two::three::\n four::five\n};"
7122 );
7123
7124 view.select_display_ranges(&[DisplayPoint::new(1, 7)..DisplayPoint::new(1, 7)], cx);
7125
7126 view.move_to_next_word_end(&MoveToNextWordEnd, cx);
7127 assert_eq!(
7128 view.selected_display_ranges(cx),
7129 &[DisplayPoint::new(1, 9)..DisplayPoint::new(1, 9)]
7130 );
7131
7132 view.move_to_next_word_end(&MoveToNextWordEnd, cx);
7133 assert_eq!(
7134 view.selected_display_ranges(cx),
7135 &[DisplayPoint::new(1, 14)..DisplayPoint::new(1, 14)]
7136 );
7137
7138 view.move_to_next_word_end(&MoveToNextWordEnd, cx);
7139 assert_eq!(
7140 view.selected_display_ranges(cx),
7141 &[DisplayPoint::new(2, 4)..DisplayPoint::new(2, 4)]
7142 );
7143
7144 view.move_to_next_word_end(&MoveToNextWordEnd, cx);
7145 assert_eq!(
7146 view.selected_display_ranges(cx),
7147 &[DisplayPoint::new(2, 8)..DisplayPoint::new(2, 8)]
7148 );
7149
7150 view.move_to_previous_word_start(&MoveToPreviousWordStart, cx);
7151 assert_eq!(
7152 view.selected_display_ranges(cx),
7153 &[DisplayPoint::new(2, 4)..DisplayPoint::new(2, 4)]
7154 );
7155
7156 view.move_to_previous_word_start(&MoveToPreviousWordStart, cx);
7157 assert_eq!(
7158 view.selected_display_ranges(cx),
7159 &[DisplayPoint::new(1, 14)..DisplayPoint::new(1, 14)]
7160 );
7161 });
7162 }
7163
7164 #[gpui::test]
7165 fn test_delete_to_word_boundary(cx: &mut gpui::MutableAppContext) {
7166 populate_settings(cx);
7167 let buffer = MultiBuffer::build_simple("one two three four", cx);
7168 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer.clone(), cx));
7169
7170 view.update(cx, |view, cx| {
7171 view.select_display_ranges(
7172 &[
7173 // an empty selection - the preceding word fragment is deleted
7174 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
7175 // characters selected - they are deleted
7176 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 12),
7177 ],
7178 cx,
7179 );
7180 view.delete_to_previous_word_start(&DeleteToPreviousWordBoundary, cx);
7181 });
7182
7183 assert_eq!(buffer.read(cx).read(cx).text(), "e two te four");
7184
7185 view.update(cx, |view, cx| {
7186 view.select_display_ranges(
7187 &[
7188 // an empty selection - the following word fragment is deleted
7189 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
7190 // characters selected - they are deleted
7191 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 10),
7192 ],
7193 cx,
7194 );
7195 view.delete_to_next_word_end(&DeleteToNextWordBoundary, cx);
7196 });
7197
7198 assert_eq!(buffer.read(cx).read(cx).text(), "e t te our");
7199 }
7200
7201 #[gpui::test]
7202 fn test_newline(cx: &mut gpui::MutableAppContext) {
7203 populate_settings(cx);
7204 let buffer = MultiBuffer::build_simple("aaaa\n bbbb\n", cx);
7205 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer.clone(), cx));
7206
7207 view.update(cx, |view, cx| {
7208 view.select_display_ranges(
7209 &[
7210 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
7211 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
7212 DisplayPoint::new(1, 6)..DisplayPoint::new(1, 6),
7213 ],
7214 cx,
7215 );
7216
7217 view.newline(&Newline, cx);
7218 assert_eq!(view.text(cx), "aa\naa\n \n bb\n bb\n");
7219 });
7220 }
7221
7222 #[gpui::test]
7223 fn test_newline_with_old_selections(cx: &mut gpui::MutableAppContext) {
7224 populate_settings(cx);
7225 let buffer = MultiBuffer::build_simple(
7226 "
7227 a
7228 b(
7229 X
7230 )
7231 c(
7232 X
7233 )
7234 "
7235 .unindent()
7236 .as_str(),
7237 cx,
7238 );
7239
7240 let (_, editor) = cx.add_window(Default::default(), |cx| {
7241 let mut editor = build_editor(buffer.clone(), cx);
7242 editor.select_ranges(
7243 [
7244 Point::new(2, 4)..Point::new(2, 5),
7245 Point::new(5, 4)..Point::new(5, 5),
7246 ],
7247 None,
7248 cx,
7249 );
7250 editor
7251 });
7252
7253 // Edit the buffer directly, deleting ranges surrounding the editor's selections
7254 buffer.update(cx, |buffer, cx| {
7255 buffer.edit(
7256 [
7257 Point::new(1, 2)..Point::new(3, 0),
7258 Point::new(4, 2)..Point::new(6, 0),
7259 ],
7260 "",
7261 cx,
7262 );
7263 assert_eq!(
7264 buffer.read(cx).text(),
7265 "
7266 a
7267 b()
7268 c()
7269 "
7270 .unindent()
7271 );
7272 });
7273
7274 editor.update(cx, |editor, cx| {
7275 assert_eq!(
7276 editor.selected_ranges(cx),
7277 &[
7278 Point::new(1, 2)..Point::new(1, 2),
7279 Point::new(2, 2)..Point::new(2, 2),
7280 ],
7281 );
7282
7283 editor.newline(&Newline, cx);
7284 assert_eq!(
7285 editor.text(cx),
7286 "
7287 a
7288 b(
7289 )
7290 c(
7291 )
7292 "
7293 .unindent()
7294 );
7295
7296 // The selections are moved after the inserted newlines
7297 assert_eq!(
7298 editor.selected_ranges(cx),
7299 &[
7300 Point::new(2, 0)..Point::new(2, 0),
7301 Point::new(4, 0)..Point::new(4, 0),
7302 ],
7303 );
7304 });
7305 }
7306
7307 #[gpui::test]
7308 fn test_insert_with_old_selections(cx: &mut gpui::MutableAppContext) {
7309 populate_settings(cx);
7310 let buffer = MultiBuffer::build_simple("a( X ), b( Y ), c( Z )", cx);
7311 let (_, editor) = cx.add_window(Default::default(), |cx| {
7312 let mut editor = build_editor(buffer.clone(), cx);
7313 editor.select_ranges([3..4, 11..12, 19..20], None, cx);
7314 editor
7315 });
7316
7317 // Edit the buffer directly, deleting ranges surrounding the editor's selections
7318 buffer.update(cx, |buffer, cx| {
7319 buffer.edit([2..5, 10..13, 18..21], "", cx);
7320 assert_eq!(buffer.read(cx).text(), "a(), b(), c()".unindent());
7321 });
7322
7323 editor.update(cx, |editor, cx| {
7324 assert_eq!(editor.selected_ranges(cx), &[2..2, 7..7, 12..12],);
7325
7326 editor.insert("Z", cx);
7327 assert_eq!(editor.text(cx), "a(Z), b(Z), c(Z)");
7328
7329 // The selections are moved after the inserted characters
7330 assert_eq!(editor.selected_ranges(cx), &[3..3, 9..9, 15..15],);
7331 });
7332 }
7333
7334 #[gpui::test]
7335 fn test_indent_outdent(cx: &mut gpui::MutableAppContext) {
7336 populate_settings(cx);
7337 let buffer = MultiBuffer::build_simple(" one two\nthree\n four", cx);
7338 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer.clone(), cx));
7339
7340 view.update(cx, |view, cx| {
7341 // two selections on the same line
7342 view.select_display_ranges(
7343 &[
7344 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 5),
7345 DisplayPoint::new(0, 6)..DisplayPoint::new(0, 9),
7346 ],
7347 cx,
7348 );
7349
7350 // indent from mid-tabstop to full tabstop
7351 view.tab(&Tab, cx);
7352 assert_eq!(view.text(cx), " one two\nthree\n four");
7353 assert_eq!(
7354 view.selected_display_ranges(cx),
7355 &[
7356 DisplayPoint::new(0, 4)..DisplayPoint::new(0, 7),
7357 DisplayPoint::new(0, 8)..DisplayPoint::new(0, 11),
7358 ]
7359 );
7360
7361 // outdent from 1 tabstop to 0 tabstops
7362 view.outdent(&Outdent, cx);
7363 assert_eq!(view.text(cx), "one two\nthree\n four");
7364 assert_eq!(
7365 view.selected_display_ranges(cx),
7366 &[
7367 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 3),
7368 DisplayPoint::new(0, 4)..DisplayPoint::new(0, 7),
7369 ]
7370 );
7371
7372 // select across line ending
7373 view.select_display_ranges(&[DisplayPoint::new(1, 1)..DisplayPoint::new(2, 0)], cx);
7374
7375 // indent and outdent affect only the preceding line
7376 view.tab(&Tab, cx);
7377 assert_eq!(view.text(cx), "one two\n three\n four");
7378 assert_eq!(
7379 view.selected_display_ranges(cx),
7380 &[DisplayPoint::new(1, 5)..DisplayPoint::new(2, 0)]
7381 );
7382 view.outdent(&Outdent, cx);
7383 assert_eq!(view.text(cx), "one two\nthree\n four");
7384 assert_eq!(
7385 view.selected_display_ranges(cx),
7386 &[DisplayPoint::new(1, 1)..DisplayPoint::new(2, 0)]
7387 );
7388
7389 // Ensure that indenting/outdenting works when the cursor is at column 0.
7390 view.select_display_ranges(&[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)], cx);
7391 view.tab(&Tab, cx);
7392 assert_eq!(view.text(cx), "one two\n three\n four");
7393 assert_eq!(
7394 view.selected_display_ranges(cx),
7395 &[DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4)]
7396 );
7397
7398 view.select_display_ranges(&[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)], cx);
7399 view.outdent(&Outdent, cx);
7400 assert_eq!(view.text(cx), "one two\nthree\n four");
7401 assert_eq!(
7402 view.selected_display_ranges(cx),
7403 &[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)]
7404 );
7405 });
7406 }
7407
7408 #[gpui::test]
7409 fn test_backspace(cx: &mut gpui::MutableAppContext) {
7410 populate_settings(cx);
7411 let (_, view) = cx.add_window(Default::default(), |cx| {
7412 build_editor(MultiBuffer::build_simple("", cx), cx)
7413 });
7414
7415 view.update(cx, |view, cx| {
7416 view.set_text("one two three\nfour five six\nseven eight nine\nten\n", cx);
7417 view.select_display_ranges(
7418 &[
7419 // an empty selection - the preceding character is deleted
7420 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
7421 // one character selected - it is deleted
7422 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
7423 // a line suffix selected - it is deleted
7424 DisplayPoint::new(2, 6)..DisplayPoint::new(3, 0),
7425 ],
7426 cx,
7427 );
7428 view.backspace(&Backspace, cx);
7429 assert_eq!(view.text(cx), "oe two three\nfou five six\nseven ten\n");
7430
7431 view.set_text(" one\n two\n three\n four", cx);
7432 view.select_display_ranges(
7433 &[
7434 // cursors at the the end of leading indent - last indent is deleted
7435 DisplayPoint::new(0, 4)..DisplayPoint::new(0, 4),
7436 DisplayPoint::new(1, 8)..DisplayPoint::new(1, 8),
7437 // cursors inside leading indent - overlapping indent deletions are coalesced
7438 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 4),
7439 DisplayPoint::new(2, 5)..DisplayPoint::new(2, 5),
7440 DisplayPoint::new(2, 6)..DisplayPoint::new(2, 6),
7441 // cursor at the beginning of a line - preceding newline is deleted
7442 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
7443 // selection inside leading indent - only the selected character is deleted
7444 DisplayPoint::new(3, 2)..DisplayPoint::new(3, 3),
7445 ],
7446 cx,
7447 );
7448 view.backspace(&Backspace, cx);
7449 assert_eq!(view.text(cx), "one\n two\n three four");
7450 });
7451 }
7452
7453 #[gpui::test]
7454 fn test_delete(cx: &mut gpui::MutableAppContext) {
7455 populate_settings(cx);
7456 let buffer =
7457 MultiBuffer::build_simple("one two three\nfour five six\nseven eight nine\nten\n", cx);
7458 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer.clone(), cx));
7459
7460 view.update(cx, |view, cx| {
7461 view.select_display_ranges(
7462 &[
7463 // an empty selection - the following character is deleted
7464 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
7465 // one character selected - it is deleted
7466 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
7467 // a line suffix selected - it is deleted
7468 DisplayPoint::new(2, 6)..DisplayPoint::new(3, 0),
7469 ],
7470 cx,
7471 );
7472 view.delete(&Delete, cx);
7473 });
7474
7475 assert_eq!(
7476 buffer.read(cx).read(cx).text(),
7477 "on two three\nfou five six\nseven ten\n"
7478 );
7479 }
7480
7481 #[gpui::test]
7482 fn test_delete_line(cx: &mut gpui::MutableAppContext) {
7483 populate_settings(cx);
7484 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
7485 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
7486 view.update(cx, |view, cx| {
7487 view.select_display_ranges(
7488 &[
7489 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
7490 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 1),
7491 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
7492 ],
7493 cx,
7494 );
7495 view.delete_line(&DeleteLine, cx);
7496 assert_eq!(view.display_text(cx), "ghi");
7497 assert_eq!(
7498 view.selected_display_ranges(cx),
7499 vec![
7500 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
7501 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1)
7502 ]
7503 );
7504 });
7505
7506 populate_settings(cx);
7507 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
7508 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
7509 view.update(cx, |view, cx| {
7510 view.select_display_ranges(&[DisplayPoint::new(2, 0)..DisplayPoint::new(0, 1)], cx);
7511 view.delete_line(&DeleteLine, cx);
7512 assert_eq!(view.display_text(cx), "ghi\n");
7513 assert_eq!(
7514 view.selected_display_ranges(cx),
7515 vec![DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1)]
7516 );
7517 });
7518 }
7519
7520 #[gpui::test]
7521 fn test_duplicate_line(cx: &mut gpui::MutableAppContext) {
7522 populate_settings(cx);
7523 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
7524 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
7525 view.update(cx, |view, cx| {
7526 view.select_display_ranges(
7527 &[
7528 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
7529 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
7530 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
7531 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
7532 ],
7533 cx,
7534 );
7535 view.duplicate_line(&DuplicateLine, cx);
7536 assert_eq!(view.display_text(cx), "abc\nabc\ndef\ndef\nghi\n\n");
7537 assert_eq!(
7538 view.selected_display_ranges(cx),
7539 vec![
7540 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 1),
7541 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
7542 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
7543 DisplayPoint::new(6, 0)..DisplayPoint::new(6, 0),
7544 ]
7545 );
7546 });
7547
7548 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
7549 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
7550 view.update(cx, |view, cx| {
7551 view.select_display_ranges(
7552 &[
7553 DisplayPoint::new(0, 1)..DisplayPoint::new(1, 1),
7554 DisplayPoint::new(1, 2)..DisplayPoint::new(2, 1),
7555 ],
7556 cx,
7557 );
7558 view.duplicate_line(&DuplicateLine, cx);
7559 assert_eq!(view.display_text(cx), "abc\ndef\nghi\nabc\ndef\nghi\n");
7560 assert_eq!(
7561 view.selected_display_ranges(cx),
7562 vec![
7563 DisplayPoint::new(3, 1)..DisplayPoint::new(4, 1),
7564 DisplayPoint::new(4, 2)..DisplayPoint::new(5, 1),
7565 ]
7566 );
7567 });
7568 }
7569
7570 #[gpui::test]
7571 fn test_move_line_up_down(cx: &mut gpui::MutableAppContext) {
7572 populate_settings(cx);
7573 let buffer = MultiBuffer::build_simple(&sample_text(10, 5, 'a'), cx);
7574 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
7575 view.update(cx, |view, cx| {
7576 view.fold_ranges(
7577 vec![
7578 Point::new(0, 2)..Point::new(1, 2),
7579 Point::new(2, 3)..Point::new(4, 1),
7580 Point::new(7, 0)..Point::new(8, 4),
7581 ],
7582 cx,
7583 );
7584 view.select_display_ranges(
7585 &[
7586 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
7587 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 1),
7588 DisplayPoint::new(3, 2)..DisplayPoint::new(4, 3),
7589 DisplayPoint::new(5, 0)..DisplayPoint::new(5, 2),
7590 ],
7591 cx,
7592 );
7593 assert_eq!(
7594 view.display_text(cx),
7595 "aa…bbb\nccc…eeee\nfffff\nggggg\n…i\njjjjj"
7596 );
7597
7598 view.move_line_up(&MoveLineUp, cx);
7599 assert_eq!(
7600 view.display_text(cx),
7601 "aa…bbb\nccc…eeee\nggggg\n…i\njjjjj\nfffff"
7602 );
7603 assert_eq!(
7604 view.selected_display_ranges(cx),
7605 vec![
7606 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
7607 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
7608 DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3),
7609 DisplayPoint::new(4, 0)..DisplayPoint::new(4, 2)
7610 ]
7611 );
7612 });
7613
7614 view.update(cx, |view, cx| {
7615 view.move_line_down(&MoveLineDown, cx);
7616 assert_eq!(
7617 view.display_text(cx),
7618 "ccc…eeee\naa…bbb\nfffff\nggggg\n…i\njjjjj"
7619 );
7620 assert_eq!(
7621 view.selected_display_ranges(cx),
7622 vec![
7623 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
7624 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 1),
7625 DisplayPoint::new(3, 2)..DisplayPoint::new(4, 3),
7626 DisplayPoint::new(5, 0)..DisplayPoint::new(5, 2)
7627 ]
7628 );
7629 });
7630
7631 view.update(cx, |view, cx| {
7632 view.move_line_down(&MoveLineDown, cx);
7633 assert_eq!(
7634 view.display_text(cx),
7635 "ccc…eeee\nfffff\naa…bbb\nggggg\n…i\njjjjj"
7636 );
7637 assert_eq!(
7638 view.selected_display_ranges(cx),
7639 vec![
7640 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
7641 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 1),
7642 DisplayPoint::new(3, 2)..DisplayPoint::new(4, 3),
7643 DisplayPoint::new(5, 0)..DisplayPoint::new(5, 2)
7644 ]
7645 );
7646 });
7647
7648 view.update(cx, |view, cx| {
7649 view.move_line_up(&MoveLineUp, cx);
7650 assert_eq!(
7651 view.display_text(cx),
7652 "ccc…eeee\naa…bbb\nggggg\n…i\njjjjj\nfffff"
7653 );
7654 assert_eq!(
7655 view.selected_display_ranges(cx),
7656 vec![
7657 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
7658 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
7659 DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3),
7660 DisplayPoint::new(4, 0)..DisplayPoint::new(4, 2)
7661 ]
7662 );
7663 });
7664 }
7665
7666 #[gpui::test]
7667 fn test_move_line_up_down_with_blocks(cx: &mut gpui::MutableAppContext) {
7668 populate_settings(cx);
7669 let buffer = MultiBuffer::build_simple(&sample_text(10, 5, 'a'), cx);
7670 let snapshot = buffer.read(cx).snapshot(cx);
7671 let (_, editor) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
7672 editor.update(cx, |editor, cx| {
7673 editor.insert_blocks(
7674 [BlockProperties {
7675 position: snapshot.anchor_after(Point::new(2, 0)),
7676 disposition: BlockDisposition::Below,
7677 height: 1,
7678 render: Arc::new(|_| Empty::new().boxed()),
7679 }],
7680 cx,
7681 );
7682 editor.select_ranges([Point::new(2, 0)..Point::new(2, 0)], None, cx);
7683 editor.move_line_down(&MoveLineDown, cx);
7684 });
7685 }
7686
7687 #[gpui::test]
7688 fn test_clipboard(cx: &mut gpui::MutableAppContext) {
7689 populate_settings(cx);
7690 let buffer = MultiBuffer::build_simple("one✅ two three four five six ", cx);
7691 let view = cx
7692 .add_window(Default::default(), |cx| build_editor(buffer.clone(), cx))
7693 .1;
7694
7695 // Cut with three selections. Clipboard text is divided into three slices.
7696 view.update(cx, |view, cx| {
7697 view.select_ranges(vec![0..7, 11..17, 22..27], None, cx);
7698 view.cut(&Cut, cx);
7699 assert_eq!(view.display_text(cx), "two four six ");
7700 });
7701
7702 // Paste with three cursors. Each cursor pastes one slice of the clipboard text.
7703 view.update(cx, |view, cx| {
7704 view.select_ranges(vec![4..4, 9..9, 13..13], None, cx);
7705 view.paste(&Paste, cx);
7706 assert_eq!(view.display_text(cx), "two one✅ four three six five ");
7707 assert_eq!(
7708 view.selected_display_ranges(cx),
7709 &[
7710 DisplayPoint::new(0, 11)..DisplayPoint::new(0, 11),
7711 DisplayPoint::new(0, 22)..DisplayPoint::new(0, 22),
7712 DisplayPoint::new(0, 31)..DisplayPoint::new(0, 31)
7713 ]
7714 );
7715 });
7716
7717 // Paste again but with only two cursors. Since the number of cursors doesn't
7718 // match the number of slices in the clipboard, the entire clipboard text
7719 // is pasted at each cursor.
7720 view.update(cx, |view, cx| {
7721 view.select_ranges(vec![0..0, 31..31], None, cx);
7722 view.handle_input(&Input("( ".into()), cx);
7723 view.paste(&Paste, cx);
7724 view.handle_input(&Input(") ".into()), cx);
7725 assert_eq!(
7726 view.display_text(cx),
7727 "( one✅ three five ) two one✅ four three six five ( one✅ three five ) "
7728 );
7729 });
7730
7731 view.update(cx, |view, cx| {
7732 view.select_ranges(vec![0..0], None, cx);
7733 view.handle_input(&Input("123\n4567\n89\n".into()), cx);
7734 assert_eq!(
7735 view.display_text(cx),
7736 "123\n4567\n89\n( one✅ three five ) two one✅ four three six five ( one✅ three five ) "
7737 );
7738 });
7739
7740 // Cut with three selections, one of which is full-line.
7741 view.update(cx, |view, cx| {
7742 view.select_display_ranges(
7743 &[
7744 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 2),
7745 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
7746 DisplayPoint::new(2, 0)..DisplayPoint::new(2, 1),
7747 ],
7748 cx,
7749 );
7750 view.cut(&Cut, cx);
7751 assert_eq!(
7752 view.display_text(cx),
7753 "13\n9\n( one✅ three five ) two one✅ four three six five ( one✅ three five ) "
7754 );
7755 });
7756
7757 // Paste with three selections, noticing how the copied selection that was full-line
7758 // gets inserted before the second cursor.
7759 view.update(cx, |view, cx| {
7760 view.select_display_ranges(
7761 &[
7762 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
7763 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
7764 DisplayPoint::new(2, 2)..DisplayPoint::new(2, 3),
7765 ],
7766 cx,
7767 );
7768 view.paste(&Paste, cx);
7769 assert_eq!(
7770 view.display_text(cx),
7771 "123\n4567\n9\n( 8ne✅ three five ) two one✅ four three six five ( one✅ three five ) "
7772 );
7773 assert_eq!(
7774 view.selected_display_ranges(cx),
7775 &[
7776 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
7777 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
7778 DisplayPoint::new(3, 3)..DisplayPoint::new(3, 3),
7779 ]
7780 );
7781 });
7782
7783 // Copy with a single cursor only, which writes the whole line into the clipboard.
7784 view.update(cx, |view, cx| {
7785 view.select_display_ranges(&[DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1)], cx);
7786 view.copy(&Copy, cx);
7787 });
7788
7789 // Paste with three selections, noticing how the copied full-line selection is inserted
7790 // before the empty selections but replaces the selection that is non-empty.
7791 view.update(cx, |view, cx| {
7792 view.select_display_ranges(
7793 &[
7794 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
7795 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 2),
7796 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
7797 ],
7798 cx,
7799 );
7800 view.paste(&Paste, cx);
7801 assert_eq!(
7802 view.display_text(cx),
7803 "123\n123\n123\n67\n123\n9\n( 8ne✅ three five ) two one✅ four three six five ( one✅ three five ) "
7804 );
7805 assert_eq!(
7806 view.selected_display_ranges(cx),
7807 &[
7808 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
7809 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
7810 DisplayPoint::new(5, 1)..DisplayPoint::new(5, 1),
7811 ]
7812 );
7813 });
7814 }
7815
7816 #[gpui::test]
7817 fn test_select_all(cx: &mut gpui::MutableAppContext) {
7818 populate_settings(cx);
7819 let buffer = MultiBuffer::build_simple("abc\nde\nfgh", cx);
7820 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
7821 view.update(cx, |view, cx| {
7822 view.select_all(&SelectAll, cx);
7823 assert_eq!(
7824 view.selected_display_ranges(cx),
7825 &[DisplayPoint::new(0, 0)..DisplayPoint::new(2, 3)]
7826 );
7827 });
7828 }
7829
7830 #[gpui::test]
7831 fn test_select_line(cx: &mut gpui::MutableAppContext) {
7832 populate_settings(cx);
7833 let buffer = MultiBuffer::build_simple(&sample_text(6, 5, 'a'), cx);
7834 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
7835 view.update(cx, |view, cx| {
7836 view.select_display_ranges(
7837 &[
7838 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
7839 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
7840 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
7841 DisplayPoint::new(4, 2)..DisplayPoint::new(4, 2),
7842 ],
7843 cx,
7844 );
7845 view.select_line(&SelectLine, cx);
7846 assert_eq!(
7847 view.selected_display_ranges(cx),
7848 vec![
7849 DisplayPoint::new(0, 0)..DisplayPoint::new(2, 0),
7850 DisplayPoint::new(4, 0)..DisplayPoint::new(5, 0),
7851 ]
7852 );
7853 });
7854
7855 view.update(cx, |view, cx| {
7856 view.select_line(&SelectLine, cx);
7857 assert_eq!(
7858 view.selected_display_ranges(cx),
7859 vec![
7860 DisplayPoint::new(0, 0)..DisplayPoint::new(3, 0),
7861 DisplayPoint::new(4, 0)..DisplayPoint::new(5, 5),
7862 ]
7863 );
7864 });
7865
7866 view.update(cx, |view, cx| {
7867 view.select_line(&SelectLine, cx);
7868 assert_eq!(
7869 view.selected_display_ranges(cx),
7870 vec![DisplayPoint::new(0, 0)..DisplayPoint::new(5, 5)]
7871 );
7872 });
7873 }
7874
7875 #[gpui::test]
7876 fn test_split_selection_into_lines(cx: &mut gpui::MutableAppContext) {
7877 populate_settings(cx);
7878 let buffer = MultiBuffer::build_simple(&sample_text(9, 5, 'a'), cx);
7879 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
7880 view.update(cx, |view, cx| {
7881 view.fold_ranges(
7882 vec![
7883 Point::new(0, 2)..Point::new(1, 2),
7884 Point::new(2, 3)..Point::new(4, 1),
7885 Point::new(7, 0)..Point::new(8, 4),
7886 ],
7887 cx,
7888 );
7889 view.select_display_ranges(
7890 &[
7891 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
7892 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
7893 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
7894 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 4),
7895 ],
7896 cx,
7897 );
7898 assert_eq!(view.display_text(cx), "aa…bbb\nccc…eeee\nfffff\nggggg\n…i");
7899 });
7900
7901 view.update(cx, |view, cx| {
7902 view.split_selection_into_lines(&SplitSelectionIntoLines, cx);
7903 assert_eq!(
7904 view.display_text(cx),
7905 "aaaaa\nbbbbb\nccc…eeee\nfffff\nggggg\n…i"
7906 );
7907 assert_eq!(
7908 view.selected_display_ranges(cx),
7909 [
7910 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
7911 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
7912 DisplayPoint::new(2, 0)..DisplayPoint::new(2, 0),
7913 DisplayPoint::new(5, 4)..DisplayPoint::new(5, 4)
7914 ]
7915 );
7916 });
7917
7918 view.update(cx, |view, cx| {
7919 view.select_display_ranges(&[DisplayPoint::new(5, 0)..DisplayPoint::new(0, 1)], cx);
7920 view.split_selection_into_lines(&SplitSelectionIntoLines, cx);
7921 assert_eq!(
7922 view.display_text(cx),
7923 "aaaaa\nbbbbb\nccccc\nddddd\neeeee\nfffff\nggggg\nhhhhh\niiiii"
7924 );
7925 assert_eq!(
7926 view.selected_display_ranges(cx),
7927 [
7928 DisplayPoint::new(0, 5)..DisplayPoint::new(0, 5),
7929 DisplayPoint::new(1, 5)..DisplayPoint::new(1, 5),
7930 DisplayPoint::new(2, 5)..DisplayPoint::new(2, 5),
7931 DisplayPoint::new(3, 5)..DisplayPoint::new(3, 5),
7932 DisplayPoint::new(4, 5)..DisplayPoint::new(4, 5),
7933 DisplayPoint::new(5, 5)..DisplayPoint::new(5, 5),
7934 DisplayPoint::new(6, 5)..DisplayPoint::new(6, 5),
7935 DisplayPoint::new(7, 0)..DisplayPoint::new(7, 0)
7936 ]
7937 );
7938 });
7939 }
7940
7941 #[gpui::test]
7942 fn test_add_selection_above_below(cx: &mut gpui::MutableAppContext) {
7943 populate_settings(cx);
7944 let buffer = MultiBuffer::build_simple("abc\ndefghi\n\njk\nlmno\n", cx);
7945 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
7946
7947 view.update(cx, |view, cx| {
7948 view.select_display_ranges(&[DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)], cx);
7949 });
7950 view.update(cx, |view, cx| {
7951 view.add_selection_above(&AddSelectionAbove, cx);
7952 assert_eq!(
7953 view.selected_display_ranges(cx),
7954 vec![
7955 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
7956 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)
7957 ]
7958 );
7959 });
7960
7961 view.update(cx, |view, cx| {
7962 view.add_selection_above(&AddSelectionAbove, cx);
7963 assert_eq!(
7964 view.selected_display_ranges(cx),
7965 vec![
7966 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
7967 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)
7968 ]
7969 );
7970 });
7971
7972 view.update(cx, |view, cx| {
7973 view.add_selection_below(&AddSelectionBelow, cx);
7974 assert_eq!(
7975 view.selected_display_ranges(cx),
7976 vec![DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)]
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![
7985 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3),
7986 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 3)
7987 ]
7988 );
7989 });
7990
7991 view.update(cx, |view, cx| {
7992 view.add_selection_below(&AddSelectionBelow, cx);
7993 assert_eq!(
7994 view.selected_display_ranges(cx),
7995 vec![
7996 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3),
7997 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 3)
7998 ]
7999 );
8000 });
8001
8002 view.update(cx, |view, cx| {
8003 view.select_display_ranges(&[DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3)], cx);
8004 });
8005 view.update(cx, |view, cx| {
8006 view.add_selection_below(&AddSelectionBelow, cx);
8007 assert_eq!(
8008 view.selected_display_ranges(cx),
8009 vec![
8010 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
8011 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 3)
8012 ]
8013 );
8014 });
8015
8016 view.update(cx, |view, cx| {
8017 view.add_selection_below(&AddSelectionBelow, cx);
8018 assert_eq!(
8019 view.selected_display_ranges(cx),
8020 vec![
8021 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
8022 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 3)
8023 ]
8024 );
8025 });
8026
8027 view.update(cx, |view, cx| {
8028 view.add_selection_above(&AddSelectionAbove, cx);
8029 assert_eq!(
8030 view.selected_display_ranges(cx),
8031 vec![DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3)]
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.select_display_ranges(&[DisplayPoint::new(0, 1)..DisplayPoint::new(1, 4)], cx);
8045 view.add_selection_below(&AddSelectionBelow, cx);
8046 assert_eq!(
8047 view.selected_display_ranges(cx),
8048 vec![
8049 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
8050 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 4),
8051 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 2),
8052 ]
8053 );
8054 });
8055
8056 view.update(cx, |view, cx| {
8057 view.add_selection_below(&AddSelectionBelow, cx);
8058 assert_eq!(
8059 view.selected_display_ranges(cx),
8060 vec![
8061 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
8062 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 4),
8063 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 2),
8064 DisplayPoint::new(4, 1)..DisplayPoint::new(4, 4),
8065 ]
8066 );
8067 });
8068
8069 view.update(cx, |view, cx| {
8070 view.add_selection_above(&AddSelectionAbove, cx);
8071 assert_eq!(
8072 view.selected_display_ranges(cx),
8073 vec![
8074 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
8075 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 4),
8076 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 2),
8077 ]
8078 );
8079 });
8080
8081 view.update(cx, |view, cx| {
8082 view.select_display_ranges(&[DisplayPoint::new(4, 3)..DisplayPoint::new(1, 1)], cx);
8083 });
8084 view.update(cx, |view, cx| {
8085 view.add_selection_above(&AddSelectionAbove, cx);
8086 assert_eq!(
8087 view.selected_display_ranges(cx),
8088 vec![
8089 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 1),
8090 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 1),
8091 DisplayPoint::new(3, 2)..DisplayPoint::new(3, 1),
8092 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 1),
8093 ]
8094 );
8095 });
8096
8097 view.update(cx, |view, cx| {
8098 view.add_selection_below(&AddSelectionBelow, cx);
8099 assert_eq!(
8100 view.selected_display_ranges(cx),
8101 vec![
8102 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 1),
8103 DisplayPoint::new(3, 2)..DisplayPoint::new(3, 1),
8104 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 1),
8105 ]
8106 );
8107 });
8108 }
8109
8110 #[gpui::test]
8111 async fn test_select_larger_smaller_syntax_node(cx: &mut gpui::TestAppContext) {
8112 cx.update(populate_settings);
8113 let language = Arc::new(Language::new(
8114 LanguageConfig::default(),
8115 Some(tree_sitter_rust::language()),
8116 ));
8117
8118 let text = r#"
8119 use mod1::mod2::{mod3, mod4};
8120
8121 fn fn_1(param1: bool, param2: &str) {
8122 let var1 = "text";
8123 }
8124 "#
8125 .unindent();
8126
8127 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
8128 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
8129 let (_, view) = cx.add_window(|cx| build_editor(buffer, cx));
8130 view.condition(&cx, |view, cx| !view.buffer.read(cx).is_parsing(cx))
8131 .await;
8132
8133 view.update(cx, |view, cx| {
8134 view.select_display_ranges(
8135 &[
8136 DisplayPoint::new(0, 25)..DisplayPoint::new(0, 25),
8137 DisplayPoint::new(2, 24)..DisplayPoint::new(2, 12),
8138 DisplayPoint::new(3, 18)..DisplayPoint::new(3, 18),
8139 ],
8140 cx,
8141 );
8142 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
8143 });
8144 assert_eq!(
8145 view.update(cx, |view, cx| view.selected_display_ranges(cx)),
8146 &[
8147 DisplayPoint::new(0, 23)..DisplayPoint::new(0, 27),
8148 DisplayPoint::new(2, 35)..DisplayPoint::new(2, 7),
8149 DisplayPoint::new(3, 15)..DisplayPoint::new(3, 21),
8150 ]
8151 );
8152
8153 view.update(cx, |view, cx| {
8154 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
8155 });
8156 assert_eq!(
8157 view.update(cx, |view, cx| view.selected_display_ranges(cx)),
8158 &[
8159 DisplayPoint::new(0, 16)..DisplayPoint::new(0, 28),
8160 DisplayPoint::new(4, 1)..DisplayPoint::new(2, 0),
8161 ]
8162 );
8163
8164 view.update(cx, |view, cx| {
8165 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
8166 });
8167 assert_eq!(
8168 view.update(cx, |view, cx| view.selected_display_ranges(cx)),
8169 &[DisplayPoint::new(5, 0)..DisplayPoint::new(0, 0)]
8170 );
8171
8172 // Trying to expand the selected syntax node one more time has no effect.
8173 view.update(cx, |view, cx| {
8174 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
8175 });
8176 assert_eq!(
8177 view.update(cx, |view, cx| view.selected_display_ranges(cx)),
8178 &[DisplayPoint::new(5, 0)..DisplayPoint::new(0, 0)]
8179 );
8180
8181 view.update(cx, |view, cx| {
8182 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
8183 });
8184 assert_eq!(
8185 view.update(cx, |view, cx| view.selected_display_ranges(cx)),
8186 &[
8187 DisplayPoint::new(0, 16)..DisplayPoint::new(0, 28),
8188 DisplayPoint::new(4, 1)..DisplayPoint::new(2, 0),
8189 ]
8190 );
8191
8192 view.update(cx, |view, cx| {
8193 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
8194 });
8195 assert_eq!(
8196 view.update(cx, |view, cx| view.selected_display_ranges(cx)),
8197 &[
8198 DisplayPoint::new(0, 23)..DisplayPoint::new(0, 27),
8199 DisplayPoint::new(2, 35)..DisplayPoint::new(2, 7),
8200 DisplayPoint::new(3, 15)..DisplayPoint::new(3, 21),
8201 ]
8202 );
8203
8204 view.update(cx, |view, cx| {
8205 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
8206 });
8207 assert_eq!(
8208 view.update(cx, |view, cx| view.selected_display_ranges(cx)),
8209 &[
8210 DisplayPoint::new(0, 25)..DisplayPoint::new(0, 25),
8211 DisplayPoint::new(2, 24)..DisplayPoint::new(2, 12),
8212 DisplayPoint::new(3, 18)..DisplayPoint::new(3, 18),
8213 ]
8214 );
8215
8216 // Trying to shrink the selected syntax node one more time has no effect.
8217 view.update(cx, |view, cx| {
8218 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
8219 });
8220 assert_eq!(
8221 view.update(cx, |view, cx| view.selected_display_ranges(cx)),
8222 &[
8223 DisplayPoint::new(0, 25)..DisplayPoint::new(0, 25),
8224 DisplayPoint::new(2, 24)..DisplayPoint::new(2, 12),
8225 DisplayPoint::new(3, 18)..DisplayPoint::new(3, 18),
8226 ]
8227 );
8228
8229 // Ensure that we keep expanding the selection if the larger selection starts or ends within
8230 // a fold.
8231 view.update(cx, |view, cx| {
8232 view.fold_ranges(
8233 vec![
8234 Point::new(0, 21)..Point::new(0, 24),
8235 Point::new(3, 20)..Point::new(3, 22),
8236 ],
8237 cx,
8238 );
8239 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
8240 });
8241 assert_eq!(
8242 view.update(cx, |view, cx| view.selected_display_ranges(cx)),
8243 &[
8244 DisplayPoint::new(0, 16)..DisplayPoint::new(0, 28),
8245 DisplayPoint::new(2, 35)..DisplayPoint::new(2, 7),
8246 DisplayPoint::new(3, 4)..DisplayPoint::new(3, 23),
8247 ]
8248 );
8249 }
8250
8251 #[gpui::test]
8252 async fn test_autoindent_selections(cx: &mut gpui::TestAppContext) {
8253 cx.update(populate_settings);
8254 let language = Arc::new(
8255 Language::new(
8256 LanguageConfig {
8257 brackets: vec![
8258 BracketPair {
8259 start: "{".to_string(),
8260 end: "}".to_string(),
8261 close: false,
8262 newline: true,
8263 },
8264 BracketPair {
8265 start: "(".to_string(),
8266 end: ")".to_string(),
8267 close: false,
8268 newline: true,
8269 },
8270 ],
8271 ..Default::default()
8272 },
8273 Some(tree_sitter_rust::language()),
8274 )
8275 .with_indents_query(
8276 r#"
8277 (_ "(" ")" @end) @indent
8278 (_ "{" "}" @end) @indent
8279 "#,
8280 )
8281 .unwrap(),
8282 );
8283
8284 let text = "fn a() {}";
8285
8286 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
8287 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
8288 let (_, editor) = cx.add_window(|cx| build_editor(buffer, cx));
8289 editor
8290 .condition(&cx, |editor, cx| !editor.buffer.read(cx).is_parsing(cx))
8291 .await;
8292
8293 editor.update(cx, |editor, cx| {
8294 editor.select_ranges([5..5, 8..8, 9..9], None, cx);
8295 editor.newline(&Newline, cx);
8296 assert_eq!(editor.text(cx), "fn a(\n \n) {\n \n}\n");
8297 assert_eq!(
8298 editor.selected_ranges(cx),
8299 &[
8300 Point::new(1, 4)..Point::new(1, 4),
8301 Point::new(3, 4)..Point::new(3, 4),
8302 Point::new(5, 0)..Point::new(5, 0)
8303 ]
8304 );
8305 });
8306 }
8307
8308 #[gpui::test]
8309 async fn test_autoclose_pairs(cx: &mut gpui::TestAppContext) {
8310 cx.update(populate_settings);
8311 let language = Arc::new(Language::new(
8312 LanguageConfig {
8313 brackets: vec![
8314 BracketPair {
8315 start: "{".to_string(),
8316 end: "}".to_string(),
8317 close: true,
8318 newline: true,
8319 },
8320 BracketPair {
8321 start: "/*".to_string(),
8322 end: " */".to_string(),
8323 close: true,
8324 newline: true,
8325 },
8326 ],
8327 autoclose_before: "})]".to_string(),
8328 ..Default::default()
8329 },
8330 Some(tree_sitter_rust::language()),
8331 ));
8332
8333 let text = r#"
8334 a
8335
8336 /
8337
8338 "#
8339 .unindent();
8340
8341 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
8342 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
8343 let (_, view) = cx.add_window(|cx| build_editor(buffer, cx));
8344 view.condition(&cx, |view, cx| !view.buffer.read(cx).is_parsing(cx))
8345 .await;
8346
8347 view.update(cx, |view, cx| {
8348 view.select_display_ranges(
8349 &[
8350 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
8351 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
8352 ],
8353 cx,
8354 );
8355
8356 view.handle_input(&Input("{".to_string()), cx);
8357 view.handle_input(&Input("{".to_string()), cx);
8358 view.handle_input(&Input("{".to_string()), cx);
8359 assert_eq!(
8360 view.text(cx),
8361 "
8362 {{{}}}
8363 {{{}}}
8364 /
8365
8366 "
8367 .unindent()
8368 );
8369
8370 view.move_right(&MoveRight, cx);
8371 view.handle_input(&Input("}".to_string()), cx);
8372 view.handle_input(&Input("}".to_string()), cx);
8373 view.handle_input(&Input("}".to_string()), cx);
8374 assert_eq!(
8375 view.text(cx),
8376 "
8377 {{{}}}}
8378 {{{}}}}
8379 /
8380
8381 "
8382 .unindent()
8383 );
8384
8385 view.undo(&Undo, cx);
8386 view.handle_input(&Input("/".to_string()), cx);
8387 view.handle_input(&Input("*".to_string()), cx);
8388 assert_eq!(
8389 view.text(cx),
8390 "
8391 /* */
8392 /* */
8393 /
8394
8395 "
8396 .unindent()
8397 );
8398
8399 view.undo(&Undo, cx);
8400 view.select_display_ranges(
8401 &[
8402 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
8403 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
8404 ],
8405 cx,
8406 );
8407 view.handle_input(&Input("*".to_string()), cx);
8408 assert_eq!(
8409 view.text(cx),
8410 "
8411 a
8412
8413 /*
8414 *
8415 "
8416 .unindent()
8417 );
8418
8419 // Don't autoclose if the next character isn't whitespace and isn't
8420 // listed in the language's "autoclose_before" section.
8421 view.finalize_last_transaction(cx);
8422 view.select_display_ranges(&[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)], cx);
8423 view.handle_input(&Input("{".to_string()), cx);
8424 assert_eq!(
8425 view.text(cx),
8426 "
8427 {a
8428
8429 /*
8430 *
8431 "
8432 .unindent()
8433 );
8434
8435 view.undo(&Undo, cx);
8436 view.select_display_ranges(&[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1)], cx);
8437 view.handle_input(&Input("{".to_string()), cx);
8438 assert_eq!(
8439 view.text(cx),
8440 "
8441 {a}
8442
8443 /*
8444 *
8445 "
8446 .unindent()
8447 );
8448 assert_eq!(
8449 view.selected_display_ranges(cx),
8450 [DisplayPoint::new(0, 1)..DisplayPoint::new(0, 2)]
8451 );
8452 });
8453 }
8454
8455 #[gpui::test]
8456 async fn test_snippets(cx: &mut gpui::TestAppContext) {
8457 cx.update(populate_settings);
8458
8459 let text = "
8460 a. b
8461 a. b
8462 a. b
8463 "
8464 .unindent();
8465 let buffer = cx.update(|cx| MultiBuffer::build_simple(&text, cx));
8466 let (_, editor) = cx.add_window(|cx| build_editor(buffer, cx));
8467
8468 editor.update(cx, |editor, cx| {
8469 let buffer = &editor.snapshot(cx).buffer_snapshot;
8470 let snippet = Snippet::parse("f(${1:one}, ${2:two}, ${1:three})$0").unwrap();
8471 let insertion_ranges = [
8472 Point::new(0, 2).to_offset(buffer)..Point::new(0, 2).to_offset(buffer),
8473 Point::new(1, 2).to_offset(buffer)..Point::new(1, 2).to_offset(buffer),
8474 Point::new(2, 2).to_offset(buffer)..Point::new(2, 2).to_offset(buffer),
8475 ];
8476
8477 editor
8478 .insert_snippet(&insertion_ranges, snippet, cx)
8479 .unwrap();
8480 assert_eq!(
8481 editor.text(cx),
8482 "
8483 a.f(one, two, three) b
8484 a.f(one, two, three) b
8485 a.f(one, two, three) b
8486 "
8487 .unindent()
8488 );
8489 assert_eq!(
8490 editor.selected_ranges::<Point>(cx),
8491 &[
8492 Point::new(0, 4)..Point::new(0, 7),
8493 Point::new(0, 14)..Point::new(0, 19),
8494 Point::new(1, 4)..Point::new(1, 7),
8495 Point::new(1, 14)..Point::new(1, 19),
8496 Point::new(2, 4)..Point::new(2, 7),
8497 Point::new(2, 14)..Point::new(2, 19),
8498 ]
8499 );
8500
8501 // Can't move earlier than the first tab stop
8502 editor.move_to_prev_snippet_tabstop(cx);
8503 assert_eq!(
8504 editor.selected_ranges::<Point>(cx),
8505 &[
8506 Point::new(0, 4)..Point::new(0, 7),
8507 Point::new(0, 14)..Point::new(0, 19),
8508 Point::new(1, 4)..Point::new(1, 7),
8509 Point::new(1, 14)..Point::new(1, 19),
8510 Point::new(2, 4)..Point::new(2, 7),
8511 Point::new(2, 14)..Point::new(2, 19),
8512 ]
8513 );
8514
8515 assert!(editor.move_to_next_snippet_tabstop(cx));
8516 assert_eq!(
8517 editor.selected_ranges::<Point>(cx),
8518 &[
8519 Point::new(0, 9)..Point::new(0, 12),
8520 Point::new(1, 9)..Point::new(1, 12),
8521 Point::new(2, 9)..Point::new(2, 12)
8522 ]
8523 );
8524
8525 editor.move_to_prev_snippet_tabstop(cx);
8526 assert_eq!(
8527 editor.selected_ranges::<Point>(cx),
8528 &[
8529 Point::new(0, 4)..Point::new(0, 7),
8530 Point::new(0, 14)..Point::new(0, 19),
8531 Point::new(1, 4)..Point::new(1, 7),
8532 Point::new(1, 14)..Point::new(1, 19),
8533 Point::new(2, 4)..Point::new(2, 7),
8534 Point::new(2, 14)..Point::new(2, 19),
8535 ]
8536 );
8537
8538 assert!(editor.move_to_next_snippet_tabstop(cx));
8539 assert!(editor.move_to_next_snippet_tabstop(cx));
8540 assert_eq!(
8541 editor.selected_ranges::<Point>(cx),
8542 &[
8543 Point::new(0, 20)..Point::new(0, 20),
8544 Point::new(1, 20)..Point::new(1, 20),
8545 Point::new(2, 20)..Point::new(2, 20)
8546 ]
8547 );
8548
8549 // As soon as the last tab stop is reached, snippet state is gone
8550 editor.move_to_prev_snippet_tabstop(cx);
8551 assert_eq!(
8552 editor.selected_ranges::<Point>(cx),
8553 &[
8554 Point::new(0, 20)..Point::new(0, 20),
8555 Point::new(1, 20)..Point::new(1, 20),
8556 Point::new(2, 20)..Point::new(2, 20)
8557 ]
8558 );
8559 });
8560 }
8561
8562 #[gpui::test]
8563 async fn test_completion(cx: &mut gpui::TestAppContext) {
8564 cx.update(populate_settings);
8565
8566 let (mut language_server_config, mut fake_servers) = LanguageServerConfig::fake();
8567 language_server_config.set_fake_capabilities(lsp::ServerCapabilities {
8568 completion_provider: Some(lsp::CompletionOptions {
8569 trigger_characters: Some(vec![".".to_string(), ":".to_string()]),
8570 ..Default::default()
8571 }),
8572 ..Default::default()
8573 });
8574 let language = Arc::new(Language::new(
8575 LanguageConfig {
8576 name: "Rust".into(),
8577 path_suffixes: vec!["rs".to_string()],
8578 language_server: Some(language_server_config),
8579 ..Default::default()
8580 },
8581 Some(tree_sitter_rust::language()),
8582 ));
8583
8584 let text = "
8585 one
8586 two
8587 three
8588 "
8589 .unindent();
8590
8591 let fs = FakeFs::new(cx.background().clone());
8592 fs.insert_file("/file.rs", text).await;
8593
8594 let project = Project::test(fs, cx);
8595 project.update(cx, |project, _| project.languages().add(language));
8596
8597 let worktree_id = project
8598 .update(cx, |project, cx| {
8599 project.find_or_create_local_worktree("/file.rs", true, cx)
8600 })
8601 .await
8602 .unwrap()
8603 .0
8604 .read_with(cx, |tree, _| tree.id());
8605 let buffer = project
8606 .update(cx, |project, cx| project.open_buffer((worktree_id, ""), cx))
8607 .await
8608 .unwrap();
8609 let mut fake_server = fake_servers.next().await.unwrap();
8610
8611 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
8612 let (_, editor) = cx.add_window(|cx| build_editor(buffer, cx));
8613
8614 editor.update(cx, |editor, cx| {
8615 editor.project = Some(project);
8616 editor.select_ranges([Point::new(0, 3)..Point::new(0, 3)], None, cx);
8617 editor.handle_input(&Input(".".to_string()), cx);
8618 });
8619
8620 handle_completion_request(
8621 &mut fake_server,
8622 "/file.rs",
8623 Point::new(0, 4),
8624 vec![
8625 (Point::new(0, 4)..Point::new(0, 4), "first_completion"),
8626 (Point::new(0, 4)..Point::new(0, 4), "second_completion"),
8627 ],
8628 )
8629 .await;
8630 editor
8631 .condition(&cx, |editor, _| editor.context_menu_visible())
8632 .await;
8633
8634 let apply_additional_edits = editor.update(cx, |editor, cx| {
8635 editor.move_down(&MoveDown, cx);
8636 let apply_additional_edits = editor
8637 .confirm_completion(&ConfirmCompletion(None), cx)
8638 .unwrap();
8639 assert_eq!(
8640 editor.text(cx),
8641 "
8642 one.second_completion
8643 two
8644 three
8645 "
8646 .unindent()
8647 );
8648 apply_additional_edits
8649 });
8650
8651 handle_resolve_completion_request(
8652 &mut fake_server,
8653 Some((Point::new(2, 5)..Point::new(2, 5), "\nadditional edit")),
8654 )
8655 .await;
8656 apply_additional_edits.await.unwrap();
8657 assert_eq!(
8658 editor.read_with(cx, |editor, cx| editor.text(cx)),
8659 "
8660 one.second_completion
8661 two
8662 three
8663 additional edit
8664 "
8665 .unindent()
8666 );
8667
8668 editor.update(cx, |editor, cx| {
8669 editor.select_ranges(
8670 [
8671 Point::new(1, 3)..Point::new(1, 3),
8672 Point::new(2, 5)..Point::new(2, 5),
8673 ],
8674 None,
8675 cx,
8676 );
8677
8678 editor.handle_input(&Input(" ".to_string()), cx);
8679 assert!(editor.context_menu.is_none());
8680 editor.handle_input(&Input("s".to_string()), cx);
8681 assert!(editor.context_menu.is_none());
8682 });
8683
8684 handle_completion_request(
8685 &mut fake_server,
8686 "/file.rs",
8687 Point::new(2, 7),
8688 vec![
8689 (Point::new(2, 6)..Point::new(2, 7), "fourth_completion"),
8690 (Point::new(2, 6)..Point::new(2, 7), "fifth_completion"),
8691 (Point::new(2, 6)..Point::new(2, 7), "sixth_completion"),
8692 ],
8693 )
8694 .await;
8695 editor
8696 .condition(&cx, |editor, _| editor.context_menu_visible())
8697 .await;
8698
8699 editor.update(cx, |editor, cx| {
8700 editor.handle_input(&Input("i".to_string()), cx);
8701 });
8702
8703 handle_completion_request(
8704 &mut fake_server,
8705 "/file.rs",
8706 Point::new(2, 8),
8707 vec![
8708 (Point::new(2, 6)..Point::new(2, 8), "fourth_completion"),
8709 (Point::new(2, 6)..Point::new(2, 8), "fifth_completion"),
8710 (Point::new(2, 6)..Point::new(2, 8), "sixth_completion"),
8711 ],
8712 )
8713 .await;
8714 editor
8715 .condition(&cx, |editor, _| editor.context_menu_visible())
8716 .await;
8717
8718 let apply_additional_edits = editor.update(cx, |editor, cx| {
8719 let apply_additional_edits = editor
8720 .confirm_completion(&ConfirmCompletion(None), cx)
8721 .unwrap();
8722 assert_eq!(
8723 editor.text(cx),
8724 "
8725 one.second_completion
8726 two sixth_completion
8727 three sixth_completion
8728 additional edit
8729 "
8730 .unindent()
8731 );
8732 apply_additional_edits
8733 });
8734 handle_resolve_completion_request(&mut fake_server, None).await;
8735 apply_additional_edits.await.unwrap();
8736
8737 async fn handle_completion_request(
8738 fake: &mut FakeLanguageServer,
8739 path: &'static str,
8740 position: Point,
8741 completions: Vec<(Range<Point>, &'static str)>,
8742 ) {
8743 fake.handle_request::<lsp::request::Completion, _>(move |params, _| {
8744 assert_eq!(
8745 params.text_document_position.text_document.uri,
8746 lsp::Url::from_file_path(path).unwrap()
8747 );
8748 assert_eq!(
8749 params.text_document_position.position,
8750 lsp::Position::new(position.row, position.column)
8751 );
8752 Some(lsp::CompletionResponse::Array(
8753 completions
8754 .iter()
8755 .map(|(range, new_text)| lsp::CompletionItem {
8756 label: new_text.to_string(),
8757 text_edit: Some(lsp::CompletionTextEdit::Edit(lsp::TextEdit {
8758 range: lsp::Range::new(
8759 lsp::Position::new(range.start.row, range.start.column),
8760 lsp::Position::new(range.start.row, range.start.column),
8761 ),
8762 new_text: new_text.to_string(),
8763 })),
8764 ..Default::default()
8765 })
8766 .collect(),
8767 ))
8768 })
8769 .next()
8770 .await;
8771 }
8772
8773 async fn handle_resolve_completion_request(
8774 fake: &mut FakeLanguageServer,
8775 edit: Option<(Range<Point>, &'static str)>,
8776 ) {
8777 fake.handle_request::<lsp::request::ResolveCompletionItem, _>(move |_, _| {
8778 lsp::CompletionItem {
8779 additional_text_edits: edit.clone().map(|(range, new_text)| {
8780 vec![lsp::TextEdit::new(
8781 lsp::Range::new(
8782 lsp::Position::new(range.start.row, range.start.column),
8783 lsp::Position::new(range.end.row, range.end.column),
8784 ),
8785 new_text.to_string(),
8786 )]
8787 }),
8788 ..Default::default()
8789 }
8790 })
8791 .next()
8792 .await;
8793 }
8794 }
8795
8796 #[gpui::test]
8797 async fn test_toggle_comment(cx: &mut gpui::TestAppContext) {
8798 cx.update(populate_settings);
8799 let language = Arc::new(Language::new(
8800 LanguageConfig {
8801 line_comment: Some("// ".to_string()),
8802 ..Default::default()
8803 },
8804 Some(tree_sitter_rust::language()),
8805 ));
8806
8807 let text = "
8808 fn a() {
8809 //b();
8810 // c();
8811 // d();
8812 }
8813 "
8814 .unindent();
8815
8816 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
8817 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
8818 let (_, view) = cx.add_window(|cx| build_editor(buffer, cx));
8819
8820 view.update(cx, |editor, cx| {
8821 // If multiple selections intersect a line, the line is only
8822 // toggled once.
8823 editor.select_display_ranges(
8824 &[
8825 DisplayPoint::new(1, 3)..DisplayPoint::new(2, 3),
8826 DisplayPoint::new(3, 5)..DisplayPoint::new(3, 6),
8827 ],
8828 cx,
8829 );
8830 editor.toggle_comments(&ToggleComments, cx);
8831 assert_eq!(
8832 editor.text(cx),
8833 "
8834 fn a() {
8835 b();
8836 c();
8837 d();
8838 }
8839 "
8840 .unindent()
8841 );
8842
8843 // The comment prefix is inserted at the same column for every line
8844 // in a selection.
8845 editor.select_display_ranges(&[DisplayPoint::new(1, 3)..DisplayPoint::new(3, 6)], cx);
8846 editor.toggle_comments(&ToggleComments, cx);
8847 assert_eq!(
8848 editor.text(cx),
8849 "
8850 fn a() {
8851 // b();
8852 // c();
8853 // d();
8854 }
8855 "
8856 .unindent()
8857 );
8858
8859 // If a selection ends at the beginning of a line, that line is not toggled.
8860 editor.select_display_ranges(&[DisplayPoint::new(2, 0)..DisplayPoint::new(3, 0)], cx);
8861 editor.toggle_comments(&ToggleComments, cx);
8862 assert_eq!(
8863 editor.text(cx),
8864 "
8865 fn a() {
8866 // b();
8867 c();
8868 // d();
8869 }
8870 "
8871 .unindent()
8872 );
8873 });
8874 }
8875
8876 #[gpui::test]
8877 fn test_editing_disjoint_excerpts(cx: &mut gpui::MutableAppContext) {
8878 populate_settings(cx);
8879 let buffer = cx.add_model(|cx| Buffer::new(0, sample_text(3, 4, 'a'), cx));
8880 let multibuffer = cx.add_model(|cx| {
8881 let mut multibuffer = MultiBuffer::new(0);
8882 multibuffer.push_excerpts(
8883 buffer.clone(),
8884 [
8885 Point::new(0, 0)..Point::new(0, 4),
8886 Point::new(1, 0)..Point::new(1, 4),
8887 ],
8888 cx,
8889 );
8890 multibuffer
8891 });
8892
8893 assert_eq!(multibuffer.read(cx).read(cx).text(), "aaaa\nbbbb");
8894
8895 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(multibuffer, cx));
8896 view.update(cx, |view, cx| {
8897 assert_eq!(view.text(cx), "aaaa\nbbbb");
8898 view.select_ranges(
8899 [
8900 Point::new(0, 0)..Point::new(0, 0),
8901 Point::new(1, 0)..Point::new(1, 0),
8902 ],
8903 None,
8904 cx,
8905 );
8906
8907 view.handle_input(&Input("X".to_string()), cx);
8908 assert_eq!(view.text(cx), "Xaaaa\nXbbbb");
8909 assert_eq!(
8910 view.selected_ranges(cx),
8911 [
8912 Point::new(0, 1)..Point::new(0, 1),
8913 Point::new(1, 1)..Point::new(1, 1),
8914 ]
8915 )
8916 });
8917 }
8918
8919 #[gpui::test]
8920 fn test_editing_overlapping_excerpts(cx: &mut gpui::MutableAppContext) {
8921 populate_settings(cx);
8922 let buffer = cx.add_model(|cx| Buffer::new(0, sample_text(3, 4, 'a'), cx));
8923 let multibuffer = cx.add_model(|cx| {
8924 let mut multibuffer = MultiBuffer::new(0);
8925 multibuffer.push_excerpts(
8926 buffer,
8927 [
8928 Point::new(0, 0)..Point::new(1, 4),
8929 Point::new(1, 0)..Point::new(2, 4),
8930 ],
8931 cx,
8932 );
8933 multibuffer
8934 });
8935
8936 assert_eq!(
8937 multibuffer.read(cx).read(cx).text(),
8938 "aaaa\nbbbb\nbbbb\ncccc"
8939 );
8940
8941 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(multibuffer, cx));
8942 view.update(cx, |view, cx| {
8943 view.select_ranges(
8944 [
8945 Point::new(1, 1)..Point::new(1, 1),
8946 Point::new(2, 3)..Point::new(2, 3),
8947 ],
8948 None,
8949 cx,
8950 );
8951
8952 view.handle_input(&Input("X".to_string()), cx);
8953 assert_eq!(view.text(cx), "aaaa\nbXbbXb\nbXbbXb\ncccc");
8954 assert_eq!(
8955 view.selected_ranges(cx),
8956 [
8957 Point::new(1, 2)..Point::new(1, 2),
8958 Point::new(2, 5)..Point::new(2, 5),
8959 ]
8960 );
8961
8962 view.newline(&Newline, cx);
8963 assert_eq!(view.text(cx), "aaaa\nbX\nbbX\nb\nbX\nbbX\nb\ncccc");
8964 assert_eq!(
8965 view.selected_ranges(cx),
8966 [
8967 Point::new(2, 0)..Point::new(2, 0),
8968 Point::new(6, 0)..Point::new(6, 0),
8969 ]
8970 );
8971 });
8972 }
8973
8974 #[gpui::test]
8975 fn test_refresh_selections(cx: &mut gpui::MutableAppContext) {
8976 populate_settings(cx);
8977 let buffer = cx.add_model(|cx| Buffer::new(0, sample_text(3, 4, 'a'), cx));
8978 let mut excerpt1_id = None;
8979 let multibuffer = cx.add_model(|cx| {
8980 let mut multibuffer = MultiBuffer::new(0);
8981 excerpt1_id = multibuffer
8982 .push_excerpts(
8983 buffer.clone(),
8984 [
8985 Point::new(0, 0)..Point::new(1, 4),
8986 Point::new(1, 0)..Point::new(2, 4),
8987 ],
8988 cx,
8989 )
8990 .into_iter()
8991 .next();
8992 multibuffer
8993 });
8994 assert_eq!(
8995 multibuffer.read(cx).read(cx).text(),
8996 "aaaa\nbbbb\nbbbb\ncccc"
8997 );
8998 let (_, editor) = cx.add_window(Default::default(), |cx| {
8999 let mut editor = build_editor(multibuffer.clone(), cx);
9000 let snapshot = editor.snapshot(cx);
9001 editor.select_ranges([Point::new(1, 3)..Point::new(1, 3)], None, cx);
9002 editor.begin_selection(Point::new(2, 1).to_display_point(&snapshot), true, 1, cx);
9003 assert_eq!(
9004 editor.selected_ranges(cx),
9005 [
9006 Point::new(1, 3)..Point::new(1, 3),
9007 Point::new(2, 1)..Point::new(2, 1),
9008 ]
9009 );
9010 editor
9011 });
9012
9013 // Refreshing selections is a no-op when excerpts haven't changed.
9014 editor.update(cx, |editor, cx| {
9015 editor.refresh_selections(cx);
9016 assert_eq!(
9017 editor.selected_ranges(cx),
9018 [
9019 Point::new(1, 3)..Point::new(1, 3),
9020 Point::new(2, 1)..Point::new(2, 1),
9021 ]
9022 );
9023 });
9024
9025 multibuffer.update(cx, |multibuffer, cx| {
9026 multibuffer.remove_excerpts([&excerpt1_id.unwrap()], cx);
9027 });
9028 editor.update(cx, |editor, cx| {
9029 // Removing an excerpt causes the first selection to become degenerate.
9030 assert_eq!(
9031 editor.selected_ranges(cx),
9032 [
9033 Point::new(0, 0)..Point::new(0, 0),
9034 Point::new(0, 1)..Point::new(0, 1)
9035 ]
9036 );
9037
9038 // Refreshing selections will relocate the first selection to the original buffer
9039 // location.
9040 editor.refresh_selections(cx);
9041 assert_eq!(
9042 editor.selected_ranges(cx),
9043 [
9044 Point::new(0, 1)..Point::new(0, 1),
9045 Point::new(0, 3)..Point::new(0, 3)
9046 ]
9047 );
9048 assert!(editor.pending_selection.is_some());
9049 });
9050 }
9051
9052 #[gpui::test]
9053 fn test_refresh_selections_while_selecting_with_mouse(cx: &mut gpui::MutableAppContext) {
9054 populate_settings(cx);
9055 let buffer = cx.add_model(|cx| Buffer::new(0, sample_text(3, 4, 'a'), cx));
9056 let mut excerpt1_id = None;
9057 let multibuffer = cx.add_model(|cx| {
9058 let mut multibuffer = MultiBuffer::new(0);
9059 excerpt1_id = multibuffer
9060 .push_excerpts(
9061 buffer.clone(),
9062 [
9063 Point::new(0, 0)..Point::new(1, 4),
9064 Point::new(1, 0)..Point::new(2, 4),
9065 ],
9066 cx,
9067 )
9068 .into_iter()
9069 .next();
9070 multibuffer
9071 });
9072 assert_eq!(
9073 multibuffer.read(cx).read(cx).text(),
9074 "aaaa\nbbbb\nbbbb\ncccc"
9075 );
9076 let (_, editor) = cx.add_window(Default::default(), |cx| {
9077 let mut editor = build_editor(multibuffer.clone(), cx);
9078 let snapshot = editor.snapshot(cx);
9079 editor.begin_selection(Point::new(1, 3).to_display_point(&snapshot), false, 1, cx);
9080 assert_eq!(
9081 editor.selected_ranges(cx),
9082 [Point::new(1, 3)..Point::new(1, 3)]
9083 );
9084 editor
9085 });
9086
9087 multibuffer.update(cx, |multibuffer, cx| {
9088 multibuffer.remove_excerpts([&excerpt1_id.unwrap()], cx);
9089 });
9090 editor.update(cx, |editor, cx| {
9091 assert_eq!(
9092 editor.selected_ranges(cx),
9093 [Point::new(0, 0)..Point::new(0, 0)]
9094 );
9095
9096 // Ensure we don't panic when selections are refreshed and that the pending selection is finalized.
9097 editor.refresh_selections(cx);
9098 assert_eq!(
9099 editor.selected_ranges(cx),
9100 [Point::new(0, 3)..Point::new(0, 3)]
9101 );
9102 assert!(editor.pending_selection.is_some());
9103 });
9104 }
9105
9106 #[gpui::test]
9107 async fn test_extra_newline_insertion(cx: &mut gpui::TestAppContext) {
9108 cx.update(populate_settings);
9109 let language = Arc::new(Language::new(
9110 LanguageConfig {
9111 brackets: vec![
9112 BracketPair {
9113 start: "{".to_string(),
9114 end: "}".to_string(),
9115 close: true,
9116 newline: true,
9117 },
9118 BracketPair {
9119 start: "/* ".to_string(),
9120 end: " */".to_string(),
9121 close: true,
9122 newline: true,
9123 },
9124 ],
9125 ..Default::default()
9126 },
9127 Some(tree_sitter_rust::language()),
9128 ));
9129
9130 let text = concat!(
9131 "{ }\n", // Suppress rustfmt
9132 " x\n", //
9133 " /* */\n", //
9134 "x\n", //
9135 "{{} }\n", //
9136 );
9137
9138 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
9139 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
9140 let (_, view) = cx.add_window(|cx| build_editor(buffer, cx));
9141 view.condition(&cx, |view, cx| !view.buffer.read(cx).is_parsing(cx))
9142 .await;
9143
9144 view.update(cx, |view, cx| {
9145 view.select_display_ranges(
9146 &[
9147 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 3),
9148 DisplayPoint::new(2, 5)..DisplayPoint::new(2, 5),
9149 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 4),
9150 ],
9151 cx,
9152 );
9153 view.newline(&Newline, cx);
9154
9155 assert_eq!(
9156 view.buffer().read(cx).read(cx).text(),
9157 concat!(
9158 "{ \n", // Suppress rustfmt
9159 "\n", //
9160 "}\n", //
9161 " x\n", //
9162 " /* \n", //
9163 " \n", //
9164 " */\n", //
9165 "x\n", //
9166 "{{} \n", //
9167 "}\n", //
9168 )
9169 );
9170 });
9171 }
9172
9173 #[gpui::test]
9174 fn test_highlighted_ranges(cx: &mut gpui::MutableAppContext) {
9175 let buffer = MultiBuffer::build_simple(&sample_text(16, 8, 'a'), cx);
9176 populate_settings(cx);
9177 let (_, editor) = cx.add_window(Default::default(), |cx| build_editor(buffer.clone(), cx));
9178
9179 editor.update(cx, |editor, cx| {
9180 struct Type1;
9181 struct Type2;
9182
9183 let buffer = buffer.read(cx).snapshot(cx);
9184
9185 let anchor_range = |range: Range<Point>| {
9186 buffer.anchor_after(range.start)..buffer.anchor_after(range.end)
9187 };
9188
9189 editor.highlight_background::<Type1>(
9190 vec![
9191 anchor_range(Point::new(2, 1)..Point::new(2, 3)),
9192 anchor_range(Point::new(4, 2)..Point::new(4, 4)),
9193 anchor_range(Point::new(6, 3)..Point::new(6, 5)),
9194 anchor_range(Point::new(8, 4)..Point::new(8, 6)),
9195 ],
9196 Color::red(),
9197 cx,
9198 );
9199 editor.highlight_background::<Type2>(
9200 vec![
9201 anchor_range(Point::new(3, 2)..Point::new(3, 5)),
9202 anchor_range(Point::new(5, 3)..Point::new(5, 6)),
9203 anchor_range(Point::new(7, 4)..Point::new(7, 7)),
9204 anchor_range(Point::new(9, 5)..Point::new(9, 8)),
9205 ],
9206 Color::green(),
9207 cx,
9208 );
9209
9210 let snapshot = editor.snapshot(cx);
9211 let mut highlighted_ranges = editor.background_highlights_in_range(
9212 anchor_range(Point::new(3, 4)..Point::new(7, 4)),
9213 &snapshot,
9214 );
9215 // Enforce a consistent ordering based on color without relying on the ordering of the
9216 // highlight's `TypeId` which is non-deterministic.
9217 highlighted_ranges.sort_unstable_by_key(|(_, color)| *color);
9218 assert_eq!(
9219 highlighted_ranges,
9220 &[
9221 (
9222 DisplayPoint::new(3, 2)..DisplayPoint::new(3, 5),
9223 Color::green(),
9224 ),
9225 (
9226 DisplayPoint::new(5, 3)..DisplayPoint::new(5, 6),
9227 Color::green(),
9228 ),
9229 (
9230 DisplayPoint::new(4, 2)..DisplayPoint::new(4, 4),
9231 Color::red(),
9232 ),
9233 (
9234 DisplayPoint::new(6, 3)..DisplayPoint::new(6, 5),
9235 Color::red(),
9236 ),
9237 ]
9238 );
9239 assert_eq!(
9240 editor.background_highlights_in_range(
9241 anchor_range(Point::new(5, 6)..Point::new(6, 4)),
9242 &snapshot,
9243 ),
9244 &[(
9245 DisplayPoint::new(6, 3)..DisplayPoint::new(6, 5),
9246 Color::red(),
9247 )]
9248 );
9249 });
9250 }
9251
9252 #[gpui::test]
9253 fn test_following(cx: &mut gpui::MutableAppContext) {
9254 let buffer = MultiBuffer::build_simple(&sample_text(16, 8, 'a'), cx);
9255 populate_settings(cx);
9256
9257 let (_, leader) = cx.add_window(Default::default(), |cx| build_editor(buffer.clone(), cx));
9258 let (_, follower) = cx.add_window(
9259 WindowOptions {
9260 bounds: WindowBounds::Fixed(RectF::from_points(vec2f(0., 0.), vec2f(10., 80.))),
9261 ..Default::default()
9262 },
9263 |cx| build_editor(buffer.clone(), cx),
9264 );
9265
9266 let pending_update = Rc::new(RefCell::new(None));
9267 follower.update(cx, {
9268 let update = pending_update.clone();
9269 |_, cx| {
9270 cx.subscribe(&leader, move |_, leader, event, cx| {
9271 leader
9272 .read(cx)
9273 .add_event_to_update_proto(event, &mut *update.borrow_mut(), cx);
9274 })
9275 .detach();
9276 }
9277 });
9278
9279 // Update the selections only
9280 leader.update(cx, |leader, cx| {
9281 leader.select_ranges([1..1], None, cx);
9282 });
9283 follower.update(cx, |follower, cx| {
9284 follower
9285 .apply_update_proto(pending_update.borrow_mut().take().unwrap(), cx)
9286 .unwrap();
9287 });
9288 assert_eq!(follower.read(cx).selected_ranges(cx), vec![1..1]);
9289
9290 // Update the scroll position only
9291 leader.update(cx, |leader, cx| {
9292 leader.set_scroll_position(vec2f(1.5, 3.5), cx);
9293 });
9294 follower.update(cx, |follower, cx| {
9295 follower
9296 .apply_update_proto(pending_update.borrow_mut().take().unwrap(), cx)
9297 .unwrap();
9298 });
9299 assert_eq!(
9300 follower.update(cx, |follower, cx| follower.scroll_position(cx)),
9301 vec2f(1.5, 3.5)
9302 );
9303
9304 // Update the selections and scroll position
9305 leader.update(cx, |leader, cx| {
9306 leader.select_ranges([0..0], None, cx);
9307 leader.request_autoscroll(Autoscroll::Newest, cx);
9308 leader.set_scroll_position(vec2f(1.5, 3.5), cx);
9309 });
9310 follower.update(cx, |follower, cx| {
9311 let initial_scroll_position = follower.scroll_position(cx);
9312 follower
9313 .apply_update_proto(pending_update.borrow_mut().take().unwrap(), cx)
9314 .unwrap();
9315 assert_eq!(follower.scroll_position(cx), initial_scroll_position);
9316 assert!(follower.autoscroll_request.is_some());
9317 });
9318 assert_eq!(follower.read(cx).selected_ranges(cx), vec![0..0]);
9319
9320 // Creating a pending selection that precedes another selection
9321 leader.update(cx, |leader, cx| {
9322 leader.select_ranges([1..1], None, cx);
9323 leader.begin_selection(DisplayPoint::new(0, 0), true, 1, cx);
9324 });
9325 follower.update(cx, |follower, cx| {
9326 follower
9327 .apply_update_proto(pending_update.borrow_mut().take().unwrap(), cx)
9328 .unwrap();
9329 });
9330 assert_eq!(follower.read(cx).selected_ranges(cx), vec![0..0, 1..1]);
9331
9332 // Extend the pending selection so that it surrounds another selection
9333 leader.update(cx, |leader, cx| {
9334 leader.extend_selection(DisplayPoint::new(0, 2), 1, cx);
9335 });
9336 follower.update(cx, |follower, cx| {
9337 follower
9338 .apply_update_proto(pending_update.borrow_mut().take().unwrap(), cx)
9339 .unwrap();
9340 });
9341 assert_eq!(follower.read(cx).selected_ranges(cx), vec![0..2]);
9342 }
9343
9344 #[test]
9345 fn test_combine_syntax_and_fuzzy_match_highlights() {
9346 let string = "abcdefghijklmnop";
9347 let syntax_ranges = [
9348 (
9349 0..3,
9350 HighlightStyle {
9351 color: Some(Color::red()),
9352 ..Default::default()
9353 },
9354 ),
9355 (
9356 4..8,
9357 HighlightStyle {
9358 color: Some(Color::green()),
9359 ..Default::default()
9360 },
9361 ),
9362 ];
9363 let match_indices = [4, 6, 7, 8];
9364 assert_eq!(
9365 combine_syntax_and_fuzzy_match_highlights(
9366 &string,
9367 Default::default(),
9368 syntax_ranges.into_iter(),
9369 &match_indices,
9370 ),
9371 &[
9372 (
9373 0..3,
9374 HighlightStyle {
9375 color: Some(Color::red()),
9376 ..Default::default()
9377 },
9378 ),
9379 (
9380 4..5,
9381 HighlightStyle {
9382 color: Some(Color::green()),
9383 weight: Some(fonts::Weight::BOLD),
9384 ..Default::default()
9385 },
9386 ),
9387 (
9388 5..6,
9389 HighlightStyle {
9390 color: Some(Color::green()),
9391 ..Default::default()
9392 },
9393 ),
9394 (
9395 6..8,
9396 HighlightStyle {
9397 color: Some(Color::green()),
9398 weight: Some(fonts::Weight::BOLD),
9399 ..Default::default()
9400 },
9401 ),
9402 (
9403 8..9,
9404 HighlightStyle {
9405 weight: Some(fonts::Weight::BOLD),
9406 ..Default::default()
9407 },
9408 ),
9409 ]
9410 );
9411 }
9412
9413 fn empty_range(row: usize, column: usize) -> Range<DisplayPoint> {
9414 let point = DisplayPoint::new(row as u32, column as u32);
9415 point..point
9416 }
9417
9418 fn build_editor(buffer: ModelHandle<MultiBuffer>, cx: &mut ViewContext<Editor>) -> Editor {
9419 Editor::new(EditorMode::Full, buffer, None, None, cx)
9420 }
9421
9422 fn populate_settings(cx: &mut gpui::MutableAppContext) {
9423 let settings = Settings::test(cx);
9424 cx.set_global(settings);
9425 }
9426
9427 fn assert_selection_ranges(
9428 marked_text: &str,
9429 selection_marker_pairs: Vec<(char, char)>,
9430 view: &mut Editor,
9431 cx: &mut ViewContext<Editor>,
9432 ) {
9433 let snapshot = view.snapshot(cx).display_snapshot;
9434 let mut marker_chars = Vec::new();
9435 for (start, end) in selection_marker_pairs.iter() {
9436 marker_chars.push(*start);
9437 marker_chars.push(*end);
9438 }
9439 let (_, markers) = marked_text_by(marked_text, marker_chars);
9440 let asserted_ranges: Vec<Range<DisplayPoint>> = selection_marker_pairs
9441 .iter()
9442 .map(|(start, end)| {
9443 let start = markers.get(start).unwrap()[0].to_display_point(&snapshot);
9444 let end = markers.get(end).unwrap()[0].to_display_point(&snapshot);
9445 start..end
9446 })
9447 .collect();
9448 assert_eq!(
9449 view.selected_display_ranges(cx),
9450 &asserted_ranges[..],
9451 "Assert selections are {}",
9452 marked_text
9453 );
9454 }
9455}
9456
9457trait RangeExt<T> {
9458 fn sorted(&self) -> Range<T>;
9459 fn to_inclusive(&self) -> RangeInclusive<T>;
9460}
9461
9462impl<T: Ord + Clone> RangeExt<T> for Range<T> {
9463 fn sorted(&self) -> Self {
9464 cmp::min(&self.start, &self.end).clone()..cmp::max(&self.start, &self.end).clone()
9465 }
9466
9467 fn to_inclusive(&self) -> RangeInclusive<T> {
9468 self.start.clone()..=self.end.clone()
9469 }
9470}