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!(DeleteToPreviousWordStart);
75action!(DeleteToPreviousSubwordStart);
76action!(DeleteToNextWordEnd);
77action!(DeleteToNextSubwordEnd);
78action!(DeleteToBeginningOfLine);
79action!(DeleteToEndOfLine);
80action!(CutToEndOfLine);
81action!(DuplicateLine);
82action!(MoveLineUp);
83action!(MoveLineDown);
84action!(Cut);
85action!(Copy);
86action!(Paste);
87action!(Undo);
88action!(Redo);
89action!(MoveUp);
90action!(MoveDown);
91action!(MoveLeft);
92action!(MoveRight);
93action!(MoveToPreviousWordStart);
94action!(MoveToPreviousSubwordStart);
95action!(MoveToNextWordEnd);
96action!(MoveToNextSubwordEnd);
97action!(MoveToBeginningOfLine);
98action!(MoveToEndOfLine);
99action!(MoveToBeginning);
100action!(MoveToEnd);
101action!(SelectUp);
102action!(SelectDown);
103action!(SelectLeft);
104action!(SelectRight);
105action!(SelectToPreviousWordStart);
106action!(SelectToPreviousSubwordStart);
107action!(SelectToNextWordEnd);
108action!(SelectToNextSubwordEnd);
109action!(SelectToBeginningOfLine, bool);
110action!(SelectToEndOfLine, bool);
111action!(SelectToBeginning);
112action!(SelectToEnd);
113action!(SelectAll);
114action!(SelectLine);
115action!(SplitSelectionIntoLines);
116action!(AddSelectionAbove);
117action!(AddSelectionBelow);
118action!(SelectNext, bool);
119action!(ToggleComments);
120action!(SelectLargerSyntaxNode);
121action!(SelectSmallerSyntaxNode);
122action!(MoveToEnclosingBracket);
123action!(GoToDiagnostic, Direction);
124action!(GoToDefinition);
125action!(FindAllReferences);
126action!(Rename);
127action!(ConfirmRename);
128action!(PageUp);
129action!(PageDown);
130action!(Fold);
131action!(UnfoldLines);
132action!(FoldSelectedRanges);
133action!(Scroll, Vector2F);
134action!(Select, SelectPhase);
135action!(ShowCompletions);
136action!(ToggleCodeActions, bool);
137action!(ConfirmCompletion, Option<usize>);
138action!(ConfirmCodeAction, Option<usize>);
139action!(OpenExcerpts);
140
141enum DocumentHighlightRead {}
142enum DocumentHighlightWrite {}
143
144#[derive(Copy, Clone, PartialEq, Eq)]
145pub enum Direction {
146 Prev,
147 Next,
148}
149
150pub fn init(cx: &mut MutableAppContext) {
151 cx.add_bindings(vec![
152 Binding::new("escape", Cancel, Some("Editor")),
153 Binding::new("backspace", Backspace, Some("Editor")),
154 Binding::new("ctrl-h", Backspace, Some("Editor")),
155 Binding::new("delete", Delete, Some("Editor")),
156 Binding::new("ctrl-d", Delete, Some("Editor")),
157 Binding::new("enter", Newline, Some("Editor && mode == full")),
158 Binding::new(
159 "alt-enter",
160 Input("\n".into()),
161 Some("Editor && mode == auto_height"),
162 ),
163 Binding::new(
164 "enter",
165 ConfirmCompletion(None),
166 Some("Editor && showing_completions"),
167 ),
168 Binding::new(
169 "enter",
170 ConfirmCodeAction(None),
171 Some("Editor && showing_code_actions"),
172 ),
173 Binding::new("enter", ConfirmRename, Some("Editor && renaming")),
174 Binding::new("tab", Tab, Some("Editor")),
175 Binding::new(
176 "tab",
177 ConfirmCompletion(None),
178 Some("Editor && showing_completions"),
179 ),
180 Binding::new("shift-tab", Outdent, Some("Editor")),
181 Binding::new("ctrl-shift-K", DeleteLine, Some("Editor")),
182 Binding::new("alt-backspace", DeleteToPreviousWordStart, Some("Editor")),
183 Binding::new("alt-h", DeleteToPreviousWordStart, Some("Editor")),
184 Binding::new(
185 "ctrl-alt-backspace",
186 DeleteToPreviousSubwordStart,
187 Some("Editor"),
188 ),
189 Binding::new("ctrl-alt-h", DeleteToPreviousSubwordStart, Some("Editor")),
190 Binding::new("alt-delete", DeleteToNextWordEnd, Some("Editor")),
191 Binding::new("alt-d", DeleteToNextWordEnd, Some("Editor")),
192 Binding::new("ctrl-alt-delete", DeleteToNextSubwordEnd, Some("Editor")),
193 Binding::new("ctrl-alt-d", DeleteToNextSubwordEnd, Some("Editor")),
194 Binding::new("cmd-backspace", DeleteToBeginningOfLine, Some("Editor")),
195 Binding::new("cmd-delete", DeleteToEndOfLine, Some("Editor")),
196 Binding::new("ctrl-k", CutToEndOfLine, Some("Editor")),
197 Binding::new("cmd-shift-D", DuplicateLine, Some("Editor")),
198 Binding::new("ctrl-cmd-up", MoveLineUp, Some("Editor")),
199 Binding::new("ctrl-cmd-down", MoveLineDown, Some("Editor")),
200 Binding::new("cmd-x", Cut, Some("Editor")),
201 Binding::new("cmd-c", Copy, Some("Editor")),
202 Binding::new("cmd-v", Paste, Some("Editor")),
203 Binding::new("cmd-z", Undo, Some("Editor")),
204 Binding::new("cmd-shift-Z", Redo, Some("Editor")),
205 Binding::new("up", MoveUp, Some("Editor")),
206 Binding::new("down", MoveDown, Some("Editor")),
207 Binding::new("left", MoveLeft, Some("Editor")),
208 Binding::new("right", MoveRight, Some("Editor")),
209 Binding::new("ctrl-p", MoveUp, Some("Editor")),
210 Binding::new("ctrl-n", MoveDown, Some("Editor")),
211 Binding::new("ctrl-b", MoveLeft, Some("Editor")),
212 Binding::new("ctrl-f", MoveRight, Some("Editor")),
213 Binding::new("alt-left", MoveToPreviousWordStart, Some("Editor")),
214 Binding::new("alt-b", MoveToPreviousWordStart, Some("Editor")),
215 Binding::new("ctrl-alt-left", MoveToPreviousSubwordStart, Some("Editor")),
216 Binding::new("ctrl-alt-b", MoveToPreviousSubwordStart, Some("Editor")),
217 Binding::new("alt-right", MoveToNextWordEnd, Some("Editor")),
218 Binding::new("alt-f", MoveToNextWordEnd, Some("Editor")),
219 Binding::new("ctrl-alt-right", MoveToNextSubwordEnd, Some("Editor")),
220 Binding::new("ctrl-alt-f", MoveToNextSubwordEnd, Some("Editor")),
221 Binding::new("cmd-left", MoveToBeginningOfLine, Some("Editor")),
222 Binding::new("ctrl-a", MoveToBeginningOfLine, Some("Editor")),
223 Binding::new("cmd-right", MoveToEndOfLine, Some("Editor")),
224 Binding::new("ctrl-e", MoveToEndOfLine, Some("Editor")),
225 Binding::new("cmd-up", MoveToBeginning, Some("Editor")),
226 Binding::new("cmd-down", MoveToEnd, Some("Editor")),
227 Binding::new("shift-up", SelectUp, Some("Editor")),
228 Binding::new("ctrl-shift-P", SelectUp, Some("Editor")),
229 Binding::new("shift-down", SelectDown, Some("Editor")),
230 Binding::new("ctrl-shift-N", SelectDown, Some("Editor")),
231 Binding::new("shift-left", SelectLeft, Some("Editor")),
232 Binding::new("ctrl-shift-B", SelectLeft, Some("Editor")),
233 Binding::new("shift-right", SelectRight, Some("Editor")),
234 Binding::new("ctrl-shift-F", SelectRight, Some("Editor")),
235 Binding::new("alt-shift-left", SelectToPreviousWordStart, Some("Editor")),
236 Binding::new("alt-shift-B", SelectToPreviousWordStart, Some("Editor")),
237 Binding::new(
238 "ctrl-alt-shift-left",
239 SelectToPreviousSubwordStart,
240 Some("Editor"),
241 ),
242 Binding::new(
243 "ctrl-alt-shift-B",
244 SelectToPreviousSubwordStart,
245 Some("Editor"),
246 ),
247 Binding::new("alt-shift-right", SelectToNextWordEnd, Some("Editor")),
248 Binding::new("alt-shift-F", SelectToNextWordEnd, Some("Editor")),
249 Binding::new(
250 "cmd-shift-left",
251 SelectToBeginningOfLine(true),
252 Some("Editor"),
253 ),
254 Binding::new(
255 "ctrl-alt-shift-right",
256 SelectToNextSubwordEnd,
257 Some("Editor"),
258 ),
259 Binding::new("ctrl-alt-shift-F", SelectToNextSubwordEnd, Some("Editor")),
260 Binding::new(
261 "ctrl-shift-A",
262 SelectToBeginningOfLine(true),
263 Some("Editor"),
264 ),
265 Binding::new("cmd-shift-right", SelectToEndOfLine(true), Some("Editor")),
266 Binding::new("ctrl-shift-E", SelectToEndOfLine(true), Some("Editor")),
267 Binding::new("cmd-shift-up", SelectToBeginning, Some("Editor")),
268 Binding::new("cmd-shift-down", SelectToEnd, Some("Editor")),
269 Binding::new("cmd-a", SelectAll, Some("Editor")),
270 Binding::new("cmd-l", SelectLine, Some("Editor")),
271 Binding::new("cmd-shift-L", SplitSelectionIntoLines, Some("Editor")),
272 Binding::new("cmd-alt-up", AddSelectionAbove, Some("Editor")),
273 Binding::new("cmd-ctrl-p", AddSelectionAbove, Some("Editor")),
274 Binding::new("cmd-alt-down", AddSelectionBelow, Some("Editor")),
275 Binding::new("cmd-ctrl-n", AddSelectionBelow, Some("Editor")),
276 Binding::new("cmd-d", SelectNext(false), Some("Editor")),
277 Binding::new("cmd-k cmd-d", SelectNext(true), Some("Editor")),
278 Binding::new("cmd-/", ToggleComments, Some("Editor")),
279 Binding::new("alt-up", SelectLargerSyntaxNode, Some("Editor")),
280 Binding::new("ctrl-w", SelectLargerSyntaxNode, Some("Editor")),
281 Binding::new("alt-down", SelectSmallerSyntaxNode, Some("Editor")),
282 Binding::new("ctrl-shift-W", SelectSmallerSyntaxNode, Some("Editor")),
283 Binding::new("f8", GoToDiagnostic(Direction::Next), Some("Editor")),
284 Binding::new("shift-f8", GoToDiagnostic(Direction::Prev), Some("Editor")),
285 Binding::new("f2", Rename, Some("Editor")),
286 Binding::new("f12", GoToDefinition, Some("Editor")),
287 Binding::new("alt-shift-f12", FindAllReferences, Some("Editor")),
288 Binding::new("ctrl-m", MoveToEnclosingBracket, Some("Editor")),
289 Binding::new("pageup", PageUp, Some("Editor")),
290 Binding::new("pagedown", PageDown, Some("Editor")),
291 Binding::new("alt-cmd-[", Fold, Some("Editor")),
292 Binding::new("alt-cmd-]", UnfoldLines, Some("Editor")),
293 Binding::new("alt-cmd-f", FoldSelectedRanges, Some("Editor")),
294 Binding::new("ctrl-space", ShowCompletions, Some("Editor")),
295 Binding::new("cmd-.", ToggleCodeActions(false), Some("Editor")),
296 Binding::new("alt-enter", OpenExcerpts, Some("Editor")),
297 ]);
298
299 cx.add_action(Editor::open_new);
300 cx.add_action(|this: &mut Editor, action: &Scroll, cx| this.set_scroll_position(action.0, cx));
301 cx.add_action(Editor::select);
302 cx.add_action(Editor::cancel);
303 cx.add_action(Editor::handle_input);
304 cx.add_action(Editor::newline);
305 cx.add_action(Editor::backspace);
306 cx.add_action(Editor::delete);
307 cx.add_action(Editor::tab);
308 cx.add_action(Editor::outdent);
309 cx.add_action(Editor::delete_line);
310 cx.add_action(Editor::delete_to_previous_word_start);
311 cx.add_action(Editor::delete_to_previous_subword_start);
312 cx.add_action(Editor::delete_to_next_word_end);
313 cx.add_action(Editor::delete_to_next_subword_end);
314 cx.add_action(Editor::delete_to_beginning_of_line);
315 cx.add_action(Editor::delete_to_end_of_line);
316 cx.add_action(Editor::cut_to_end_of_line);
317 cx.add_action(Editor::duplicate_line);
318 cx.add_action(Editor::move_line_up);
319 cx.add_action(Editor::move_line_down);
320 cx.add_action(Editor::cut);
321 cx.add_action(Editor::copy);
322 cx.add_action(Editor::paste);
323 cx.add_action(Editor::undo);
324 cx.add_action(Editor::redo);
325 cx.add_action(Editor::move_up);
326 cx.add_action(Editor::move_down);
327 cx.add_action(Editor::move_left);
328 cx.add_action(Editor::move_right);
329 cx.add_action(Editor::move_to_previous_word_start);
330 cx.add_action(Editor::move_to_previous_subword_start);
331 cx.add_action(Editor::move_to_next_word_end);
332 cx.add_action(Editor::move_to_next_subword_end);
333 cx.add_action(Editor::move_to_beginning_of_line);
334 cx.add_action(Editor::move_to_end_of_line);
335 cx.add_action(Editor::move_to_beginning);
336 cx.add_action(Editor::move_to_end);
337 cx.add_action(Editor::select_up);
338 cx.add_action(Editor::select_down);
339 cx.add_action(Editor::select_left);
340 cx.add_action(Editor::select_right);
341 cx.add_action(Editor::select_to_previous_word_start);
342 cx.add_action(Editor::select_to_previous_subword_start);
343 cx.add_action(Editor::select_to_next_word_end);
344 cx.add_action(Editor::select_to_next_subword_end);
345 cx.add_action(Editor::select_to_beginning_of_line);
346 cx.add_action(Editor::select_to_end_of_line);
347 cx.add_action(Editor::select_to_beginning);
348 cx.add_action(Editor::select_to_end);
349 cx.add_action(Editor::select_all);
350 cx.add_action(Editor::select_line);
351 cx.add_action(Editor::split_selection_into_lines);
352 cx.add_action(Editor::add_selection_above);
353 cx.add_action(Editor::add_selection_below);
354 cx.add_action(Editor::select_next);
355 cx.add_action(Editor::toggle_comments);
356 cx.add_action(Editor::select_larger_syntax_node);
357 cx.add_action(Editor::select_smaller_syntax_node);
358 cx.add_action(Editor::move_to_enclosing_bracket);
359 cx.add_action(Editor::go_to_diagnostic);
360 cx.add_action(Editor::go_to_definition);
361 cx.add_action(Editor::page_up);
362 cx.add_action(Editor::page_down);
363 cx.add_action(Editor::fold);
364 cx.add_action(Editor::unfold_lines);
365 cx.add_action(Editor::fold_selected_ranges);
366 cx.add_action(Editor::show_completions);
367 cx.add_action(Editor::toggle_code_actions);
368 cx.add_action(Editor::open_excerpts);
369 cx.add_async_action(Editor::confirm_completion);
370 cx.add_async_action(Editor::confirm_code_action);
371 cx.add_async_action(Editor::rename);
372 cx.add_async_action(Editor::confirm_rename);
373 cx.add_async_action(Editor::find_all_references);
374
375 workspace::register_project_item::<Editor>(cx);
376 workspace::register_followable_item::<Editor>(cx);
377}
378
379trait InvalidationRegion {
380 fn ranges(&self) -> &[Range<Anchor>];
381}
382
383#[derive(Clone, Debug)]
384pub enum SelectPhase {
385 Begin {
386 position: DisplayPoint,
387 add: bool,
388 click_count: usize,
389 },
390 BeginColumnar {
391 position: DisplayPoint,
392 overshoot: u32,
393 },
394 Extend {
395 position: DisplayPoint,
396 click_count: usize,
397 },
398 Update {
399 position: DisplayPoint,
400 overshoot: u32,
401 scroll_position: Vector2F,
402 },
403 End,
404}
405
406#[derive(Clone, Debug)]
407pub enum SelectMode {
408 Character,
409 Word(Range<Anchor>),
410 Line(Range<Anchor>),
411 All,
412}
413
414#[derive(PartialEq, Eq)]
415pub enum Autoscroll {
416 Fit,
417 Center,
418 Newest,
419}
420
421#[derive(Copy, Clone, PartialEq, Eq)]
422pub enum EditorMode {
423 SingleLine,
424 AutoHeight { max_lines: usize },
425 Full,
426}
427
428#[derive(Clone)]
429pub enum SoftWrap {
430 None,
431 EditorWidth,
432 Column(u32),
433}
434
435#[derive(Clone)]
436pub struct EditorStyle {
437 pub text: TextStyle,
438 pub placeholder_text: Option<TextStyle>,
439 pub theme: theme::Editor,
440}
441
442type CompletionId = usize;
443
444pub type GetFieldEditorTheme = fn(&theme::Theme) -> theme::FieldEditor;
445
446type OverrideTextStyle = dyn Fn(&EditorStyle) -> Option<HighlightStyle>;
447
448pub struct Editor {
449 handle: WeakViewHandle<Self>,
450 buffer: ModelHandle<MultiBuffer>,
451 display_map: ModelHandle<DisplayMap>,
452 next_selection_id: usize,
453 selections: Arc<[Selection<Anchor>]>,
454 pending_selection: Option<PendingSelection>,
455 columnar_selection_tail: Option<Anchor>,
456 add_selections_state: Option<AddSelectionsState>,
457 select_next_state: Option<SelectNextState>,
458 selection_history:
459 HashMap<TransactionId, (Arc<[Selection<Anchor>]>, Option<Arc<[Selection<Anchor>]>>)>,
460 autoclose_stack: InvalidationStack<BracketPairState>,
461 snippet_stack: InvalidationStack<SnippetState>,
462 select_larger_syntax_node_stack: Vec<Box<[Selection<usize>]>>,
463 active_diagnostics: Option<ActiveDiagnosticGroup>,
464 scroll_position: Vector2F,
465 scroll_top_anchor: Anchor,
466 autoscroll_request: Option<(Autoscroll, bool)>,
467 soft_wrap_mode_override: Option<settings::SoftWrap>,
468 get_field_editor_theme: Option<GetFieldEditorTheme>,
469 override_text_style: Option<Box<OverrideTextStyle>>,
470 project: Option<ModelHandle<Project>>,
471 focused: bool,
472 show_local_cursors: bool,
473 show_local_selections: bool,
474 blink_epoch: usize,
475 blinking_paused: bool,
476 mode: EditorMode,
477 vertical_scroll_margin: f32,
478 placeholder_text: Option<Arc<str>>,
479 highlighted_rows: Option<Range<u32>>,
480 background_highlights: BTreeMap<TypeId, (Color, Vec<Range<Anchor>>)>,
481 nav_history: Option<ItemNavHistory>,
482 context_menu: Option<ContextMenu>,
483 completion_tasks: Vec<(CompletionId, Task<Option<()>>)>,
484 next_completion_id: CompletionId,
485 available_code_actions: Option<(ModelHandle<Buffer>, Arc<[CodeAction]>)>,
486 code_actions_task: Option<Task<()>>,
487 document_highlights_task: Option<Task<()>>,
488 pending_rename: Option<RenameState>,
489 searchable: bool,
490 cursor_shape: CursorShape,
491 leader_replica_id: Option<u16>,
492}
493
494pub struct EditorSnapshot {
495 pub mode: EditorMode,
496 pub display_snapshot: DisplaySnapshot,
497 pub placeholder_text: Option<Arc<str>>,
498 is_focused: bool,
499 scroll_position: Vector2F,
500 scroll_top_anchor: Anchor,
501}
502
503#[derive(Clone)]
504pub struct PendingSelection {
505 selection: Selection<Anchor>,
506 mode: SelectMode,
507}
508
509struct AddSelectionsState {
510 above: bool,
511 stack: Vec<usize>,
512}
513
514struct SelectNextState {
515 query: AhoCorasick,
516 wordwise: bool,
517 done: bool,
518}
519
520struct BracketPairState {
521 ranges: Vec<Range<Anchor>>,
522 pair: BracketPair,
523}
524
525struct SnippetState {
526 ranges: Vec<Vec<Range<Anchor>>>,
527 active_index: usize,
528}
529
530pub struct RenameState {
531 pub range: Range<Anchor>,
532 pub old_name: String,
533 pub editor: ViewHandle<Editor>,
534 block_id: BlockId,
535}
536
537struct InvalidationStack<T>(Vec<T>);
538
539enum ContextMenu {
540 Completions(CompletionsMenu),
541 CodeActions(CodeActionsMenu),
542}
543
544impl ContextMenu {
545 fn select_prev(&mut self, cx: &mut ViewContext<Editor>) -> bool {
546 if self.visible() {
547 match self {
548 ContextMenu::Completions(menu) => menu.select_prev(cx),
549 ContextMenu::CodeActions(menu) => menu.select_prev(cx),
550 }
551 true
552 } else {
553 false
554 }
555 }
556
557 fn select_next(&mut self, cx: &mut ViewContext<Editor>) -> bool {
558 if self.visible() {
559 match self {
560 ContextMenu::Completions(menu) => menu.select_next(cx),
561 ContextMenu::CodeActions(menu) => menu.select_next(cx),
562 }
563 true
564 } else {
565 false
566 }
567 }
568
569 fn visible(&self) -> bool {
570 match self {
571 ContextMenu::Completions(menu) => menu.visible(),
572 ContextMenu::CodeActions(menu) => menu.visible(),
573 }
574 }
575
576 fn render(
577 &self,
578 cursor_position: DisplayPoint,
579 style: EditorStyle,
580 cx: &AppContext,
581 ) -> (DisplayPoint, ElementBox) {
582 match self {
583 ContextMenu::Completions(menu) => (cursor_position, menu.render(style, cx)),
584 ContextMenu::CodeActions(menu) => menu.render(cursor_position, style),
585 }
586 }
587}
588
589struct CompletionsMenu {
590 id: CompletionId,
591 initial_position: Anchor,
592 buffer: ModelHandle<Buffer>,
593 completions: Arc<[Completion]>,
594 match_candidates: Vec<StringMatchCandidate>,
595 matches: Arc<[StringMatch]>,
596 selected_item: usize,
597 list: UniformListState,
598}
599
600impl CompletionsMenu {
601 fn select_prev(&mut self, cx: &mut ViewContext<Editor>) {
602 if self.selected_item > 0 {
603 self.selected_item -= 1;
604 self.list.scroll_to(ScrollTarget::Show(self.selected_item));
605 }
606 cx.notify();
607 }
608
609 fn select_next(&mut self, cx: &mut ViewContext<Editor>) {
610 if self.selected_item + 1 < self.matches.len() {
611 self.selected_item += 1;
612 self.list.scroll_to(ScrollTarget::Show(self.selected_item));
613 }
614 cx.notify();
615 }
616
617 fn visible(&self) -> bool {
618 !self.matches.is_empty()
619 }
620
621 fn render(&self, style: EditorStyle, _: &AppContext) -> ElementBox {
622 enum CompletionTag {}
623
624 let completions = self.completions.clone();
625 let matches = self.matches.clone();
626 let selected_item = self.selected_item;
627 let container_style = style.autocomplete.container;
628 UniformList::new(self.list.clone(), matches.len(), move |range, items, cx| {
629 let start_ix = range.start;
630 for (ix, mat) in matches[range].iter().enumerate() {
631 let completion = &completions[mat.candidate_id];
632 let item_ix = start_ix + ix;
633 items.push(
634 MouseEventHandler::new::<CompletionTag, _, _>(
635 mat.candidate_id,
636 cx,
637 |state, _| {
638 let item_style = if item_ix == selected_item {
639 style.autocomplete.selected_item
640 } else if state.hovered {
641 style.autocomplete.hovered_item
642 } else {
643 style.autocomplete.item
644 };
645
646 Text::new(completion.label.text.clone(), style.text.clone())
647 .with_soft_wrap(false)
648 .with_highlights(combine_syntax_and_fuzzy_match_highlights(
649 &completion.label.text,
650 style.text.color.into(),
651 styled_runs_for_code_label(&completion.label, &style.syntax),
652 &mat.positions,
653 ))
654 .contained()
655 .with_style(item_style)
656 .boxed()
657 },
658 )
659 .with_cursor_style(CursorStyle::PointingHand)
660 .on_mouse_down(move |cx| {
661 cx.dispatch_action(ConfirmCompletion(Some(item_ix)));
662 })
663 .boxed(),
664 );
665 }
666 })
667 .with_width_from_item(
668 self.matches
669 .iter()
670 .enumerate()
671 .max_by_key(|(_, mat)| {
672 self.completions[mat.candidate_id]
673 .label
674 .text
675 .chars()
676 .count()
677 })
678 .map(|(ix, _)| ix),
679 )
680 .contained()
681 .with_style(container_style)
682 .boxed()
683 }
684
685 pub async fn filter(&mut self, query: Option<&str>, executor: Arc<executor::Background>) {
686 let mut matches = if let Some(query) = query {
687 fuzzy::match_strings(
688 &self.match_candidates,
689 query,
690 false,
691 100,
692 &Default::default(),
693 executor,
694 )
695 .await
696 } else {
697 self.match_candidates
698 .iter()
699 .enumerate()
700 .map(|(candidate_id, candidate)| StringMatch {
701 candidate_id,
702 score: Default::default(),
703 positions: Default::default(),
704 string: candidate.string.clone(),
705 })
706 .collect()
707 };
708 matches.sort_unstable_by_key(|mat| {
709 (
710 Reverse(OrderedFloat(mat.score)),
711 self.completions[mat.candidate_id].sort_key(),
712 )
713 });
714
715 for mat in &mut matches {
716 let filter_start = self.completions[mat.candidate_id].label.filter_range.start;
717 for position in &mut mat.positions {
718 *position += filter_start;
719 }
720 }
721
722 self.matches = matches.into();
723 }
724}
725
726#[derive(Clone)]
727struct CodeActionsMenu {
728 actions: Arc<[CodeAction]>,
729 buffer: ModelHandle<Buffer>,
730 selected_item: usize,
731 list: UniformListState,
732 deployed_from_indicator: bool,
733}
734
735impl CodeActionsMenu {
736 fn select_prev(&mut self, cx: &mut ViewContext<Editor>) {
737 if self.selected_item > 0 {
738 self.selected_item -= 1;
739 cx.notify()
740 }
741 }
742
743 fn select_next(&mut self, cx: &mut ViewContext<Editor>) {
744 if self.selected_item + 1 < self.actions.len() {
745 self.selected_item += 1;
746 cx.notify()
747 }
748 }
749
750 fn visible(&self) -> bool {
751 !self.actions.is_empty()
752 }
753
754 fn render(
755 &self,
756 mut cursor_position: DisplayPoint,
757 style: EditorStyle,
758 ) -> (DisplayPoint, ElementBox) {
759 enum ActionTag {}
760
761 let container_style = style.autocomplete.container;
762 let actions = self.actions.clone();
763 let selected_item = self.selected_item;
764 let element =
765 UniformList::new(self.list.clone(), actions.len(), move |range, items, cx| {
766 let start_ix = range.start;
767 for (ix, action) in actions[range].iter().enumerate() {
768 let item_ix = start_ix + ix;
769 items.push(
770 MouseEventHandler::new::<ActionTag, _, _>(item_ix, cx, |state, _| {
771 let item_style = if item_ix == selected_item {
772 style.autocomplete.selected_item
773 } else if state.hovered {
774 style.autocomplete.hovered_item
775 } else {
776 style.autocomplete.item
777 };
778
779 Text::new(action.lsp_action.title.clone(), style.text.clone())
780 .with_soft_wrap(false)
781 .contained()
782 .with_style(item_style)
783 .boxed()
784 })
785 .with_cursor_style(CursorStyle::PointingHand)
786 .on_mouse_down(move |cx| {
787 cx.dispatch_action(ConfirmCodeAction(Some(item_ix)));
788 })
789 .boxed(),
790 );
791 }
792 })
793 .with_width_from_item(
794 self.actions
795 .iter()
796 .enumerate()
797 .max_by_key(|(_, action)| action.lsp_action.title.chars().count())
798 .map(|(ix, _)| ix),
799 )
800 .contained()
801 .with_style(container_style)
802 .boxed();
803
804 if self.deployed_from_indicator {
805 *cursor_position.column_mut() = 0;
806 }
807
808 (cursor_position, element)
809 }
810}
811
812#[derive(Debug)]
813struct ActiveDiagnosticGroup {
814 primary_range: Range<Anchor>,
815 primary_message: String,
816 blocks: HashMap<BlockId, Diagnostic>,
817 is_valid: bool,
818}
819
820#[derive(Serialize, Deserialize)]
821struct ClipboardSelection {
822 len: usize,
823 is_entire_line: bool,
824}
825
826pub struct NavigationData {
827 anchor: Anchor,
828 offset: usize,
829}
830
831pub struct EditorCreated(pub ViewHandle<Editor>);
832
833impl Editor {
834 pub fn single_line(
835 field_editor_style: Option<GetFieldEditorTheme>,
836 cx: &mut ViewContext<Self>,
837 ) -> Self {
838 let buffer = cx.add_model(|cx| Buffer::new(0, String::new(), cx));
839 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
840 Self::new(EditorMode::SingleLine, buffer, None, field_editor_style, cx)
841 }
842
843 pub fn auto_height(
844 max_lines: usize,
845 field_editor_style: Option<GetFieldEditorTheme>,
846 cx: &mut ViewContext<Self>,
847 ) -> Self {
848 let buffer = cx.add_model(|cx| Buffer::new(0, String::new(), cx));
849 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
850 Self::new(
851 EditorMode::AutoHeight { max_lines },
852 buffer,
853 None,
854 field_editor_style,
855 cx,
856 )
857 }
858
859 pub fn for_buffer(
860 buffer: ModelHandle<Buffer>,
861 project: Option<ModelHandle<Project>>,
862 cx: &mut ViewContext<Self>,
863 ) -> Self {
864 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
865 Self::new(EditorMode::Full, buffer, project, None, cx)
866 }
867
868 pub fn for_multibuffer(
869 buffer: ModelHandle<MultiBuffer>,
870 project: Option<ModelHandle<Project>>,
871 cx: &mut ViewContext<Self>,
872 ) -> Self {
873 Self::new(EditorMode::Full, buffer, project, None, cx)
874 }
875
876 pub fn clone(&self, cx: &mut ViewContext<Self>) -> Self {
877 let mut clone = Self::new(
878 self.mode,
879 self.buffer.clone(),
880 self.project.clone(),
881 self.get_field_editor_theme,
882 cx,
883 );
884 clone.scroll_position = self.scroll_position;
885 clone.scroll_top_anchor = self.scroll_top_anchor.clone();
886 clone.searchable = self.searchable;
887 clone
888 }
889
890 fn new(
891 mode: EditorMode,
892 buffer: ModelHandle<MultiBuffer>,
893 project: Option<ModelHandle<Project>>,
894 get_field_editor_theme: Option<GetFieldEditorTheme>,
895 cx: &mut ViewContext<Self>,
896 ) -> Self {
897 let display_map = cx.add_model(|cx| {
898 let settings = cx.global::<Settings>();
899 let style = build_style(&*settings, get_field_editor_theme, None, cx);
900 DisplayMap::new(
901 buffer.clone(),
902 settings.tab_size,
903 style.text.font_id,
904 style.text.font_size,
905 None,
906 2,
907 1,
908 cx,
909 )
910 });
911 cx.observe(&buffer, Self::on_buffer_changed).detach();
912 cx.subscribe(&buffer, Self::on_buffer_event).detach();
913 cx.observe(&display_map, Self::on_display_map_changed)
914 .detach();
915
916 let mut this = Self {
917 handle: cx.weak_handle(),
918 buffer,
919 display_map,
920 selections: Arc::from([]),
921 pending_selection: Some(PendingSelection {
922 selection: Selection {
923 id: 0,
924 start: Anchor::min(),
925 end: Anchor::min(),
926 reversed: false,
927 goal: SelectionGoal::None,
928 },
929 mode: SelectMode::Character,
930 }),
931 columnar_selection_tail: None,
932 next_selection_id: 1,
933 add_selections_state: None,
934 select_next_state: None,
935 selection_history: Default::default(),
936 autoclose_stack: Default::default(),
937 snippet_stack: Default::default(),
938 select_larger_syntax_node_stack: Vec::new(),
939 active_diagnostics: None,
940 soft_wrap_mode_override: None,
941 get_field_editor_theme,
942 project,
943 scroll_position: Vector2F::zero(),
944 scroll_top_anchor: Anchor::min(),
945 autoscroll_request: None,
946 focused: false,
947 show_local_cursors: false,
948 show_local_selections: true,
949 blink_epoch: 0,
950 blinking_paused: false,
951 mode,
952 vertical_scroll_margin: 3.0,
953 placeholder_text: None,
954 highlighted_rows: None,
955 background_highlights: Default::default(),
956 nav_history: None,
957 context_menu: None,
958 completion_tasks: Default::default(),
959 next_completion_id: 0,
960 available_code_actions: Default::default(),
961 code_actions_task: Default::default(),
962 document_highlights_task: Default::default(),
963 pending_rename: Default::default(),
964 searchable: true,
965 override_text_style: None,
966 cursor_shape: Default::default(),
967 leader_replica_id: None,
968 };
969 this.end_selection(cx);
970
971 let editor_created_event = EditorCreated(cx.handle());
972 cx.emit_global(editor_created_event);
973
974 this
975 }
976
977 pub fn open_new(
978 workspace: &mut Workspace,
979 _: &workspace::OpenNew,
980 cx: &mut ViewContext<Workspace>,
981 ) {
982 let project = workspace.project().clone();
983 if project.read(cx).is_remote() {
984 cx.propagate_action();
985 } else if let Some(buffer) = project
986 .update(cx, |project, cx| project.create_buffer(cx))
987 .log_err()
988 {
989 workspace.add_item(
990 Box::new(cx.add_view(|cx| Editor::for_buffer(buffer, Some(project.clone()), cx))),
991 cx,
992 );
993 }
994 }
995
996 pub fn replica_id(&self, cx: &AppContext) -> ReplicaId {
997 self.buffer.read(cx).replica_id()
998 }
999
1000 pub fn buffer(&self) -> &ModelHandle<MultiBuffer> {
1001 &self.buffer
1002 }
1003
1004 pub fn title(&self, cx: &AppContext) -> String {
1005 self.buffer().read(cx).title(cx)
1006 }
1007
1008 pub fn snapshot(&mut self, cx: &mut MutableAppContext) -> EditorSnapshot {
1009 EditorSnapshot {
1010 mode: self.mode,
1011 display_snapshot: self.display_map.update(cx, |map, cx| map.snapshot(cx)),
1012 scroll_position: self.scroll_position,
1013 scroll_top_anchor: self.scroll_top_anchor.clone(),
1014 placeholder_text: self.placeholder_text.clone(),
1015 is_focused: self
1016 .handle
1017 .upgrade(cx)
1018 .map_or(false, |handle| handle.is_focused(cx)),
1019 }
1020 }
1021
1022 pub fn language<'a>(&self, cx: &'a AppContext) -> Option<&'a Arc<Language>> {
1023 self.buffer.read(cx).language(cx)
1024 }
1025
1026 fn style(&self, cx: &AppContext) -> EditorStyle {
1027 build_style(
1028 cx.global::<Settings>(),
1029 self.get_field_editor_theme,
1030 self.override_text_style.as_deref(),
1031 cx,
1032 )
1033 }
1034
1035 pub fn set_placeholder_text(
1036 &mut self,
1037 placeholder_text: impl Into<Arc<str>>,
1038 cx: &mut ViewContext<Self>,
1039 ) {
1040 self.placeholder_text = Some(placeholder_text.into());
1041 cx.notify();
1042 }
1043
1044 pub fn set_vertical_scroll_margin(&mut self, margin_rows: usize, cx: &mut ViewContext<Self>) {
1045 self.vertical_scroll_margin = margin_rows as f32;
1046 cx.notify();
1047 }
1048
1049 pub fn set_scroll_position(&mut self, scroll_position: Vector2F, cx: &mut ViewContext<Self>) {
1050 self.set_scroll_position_internal(scroll_position, true, cx);
1051 }
1052
1053 fn set_scroll_position_internal(
1054 &mut self,
1055 scroll_position: Vector2F,
1056 local: bool,
1057 cx: &mut ViewContext<Self>,
1058 ) {
1059 let map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1060
1061 if scroll_position.y() == 0. {
1062 self.scroll_top_anchor = Anchor::min();
1063 self.scroll_position = scroll_position;
1064 } else {
1065 let scroll_top_buffer_offset =
1066 DisplayPoint::new(scroll_position.y() as u32, 0).to_offset(&map, Bias::Right);
1067 let anchor = map
1068 .buffer_snapshot
1069 .anchor_at(scroll_top_buffer_offset, Bias::Right);
1070 self.scroll_position = vec2f(
1071 scroll_position.x(),
1072 scroll_position.y() - anchor.to_display_point(&map).row() as f32,
1073 );
1074 self.scroll_top_anchor = anchor;
1075 }
1076
1077 cx.emit(Event::ScrollPositionChanged { local });
1078 cx.notify();
1079 }
1080
1081 fn set_scroll_top_anchor(
1082 &mut self,
1083 anchor: Anchor,
1084 position: Vector2F,
1085 cx: &mut ViewContext<Self>,
1086 ) {
1087 self.scroll_top_anchor = anchor;
1088 self.scroll_position = position;
1089 cx.emit(Event::ScrollPositionChanged { local: false });
1090 cx.notify();
1091 }
1092
1093 pub fn set_cursor_shape(&mut self, cursor_shape: CursorShape, cx: &mut ViewContext<Self>) {
1094 self.cursor_shape = cursor_shape;
1095 cx.notify();
1096 }
1097
1098 pub fn scroll_position(&self, cx: &mut ViewContext<Self>) -> Vector2F {
1099 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1100 compute_scroll_position(&display_map, self.scroll_position, &self.scroll_top_anchor)
1101 }
1102
1103 pub fn clamp_scroll_left(&mut self, max: f32) -> bool {
1104 if max < self.scroll_position.x() {
1105 self.scroll_position.set_x(max);
1106 true
1107 } else {
1108 false
1109 }
1110 }
1111
1112 pub fn autoscroll_vertically(
1113 &mut self,
1114 viewport_height: f32,
1115 line_height: f32,
1116 cx: &mut ViewContext<Self>,
1117 ) -> bool {
1118 let visible_lines = viewport_height / line_height;
1119 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1120 let mut scroll_position =
1121 compute_scroll_position(&display_map, self.scroll_position, &self.scroll_top_anchor);
1122 let max_scroll_top = if matches!(self.mode, EditorMode::AutoHeight { .. }) {
1123 (display_map.max_point().row() as f32 - visible_lines + 1.).max(0.)
1124 } else {
1125 display_map.max_point().row().saturating_sub(1) as f32
1126 };
1127 if scroll_position.y() > max_scroll_top {
1128 scroll_position.set_y(max_scroll_top);
1129 self.set_scroll_position(scroll_position, cx);
1130 }
1131
1132 let (autoscroll, local) = if let Some(autoscroll) = self.autoscroll_request.take() {
1133 autoscroll
1134 } else {
1135 return false;
1136 };
1137
1138 let first_cursor_top;
1139 let last_cursor_bottom;
1140 if let Some(highlighted_rows) = &self.highlighted_rows {
1141 first_cursor_top = highlighted_rows.start as f32;
1142 last_cursor_bottom = first_cursor_top + 1.;
1143 } else if autoscroll == Autoscroll::Newest {
1144 let newest_selection =
1145 self.newest_selection_with_snapshot::<Point>(&display_map.buffer_snapshot);
1146 first_cursor_top = newest_selection.head().to_display_point(&display_map).row() as f32;
1147 last_cursor_bottom = first_cursor_top + 1.;
1148 } else {
1149 let selections = self.local_selections::<Point>(cx);
1150 first_cursor_top = selections
1151 .first()
1152 .unwrap()
1153 .head()
1154 .to_display_point(&display_map)
1155 .row() as f32;
1156 last_cursor_bottom = selections
1157 .last()
1158 .unwrap()
1159 .head()
1160 .to_display_point(&display_map)
1161 .row() as f32
1162 + 1.0;
1163 }
1164
1165 let margin = if matches!(self.mode, EditorMode::AutoHeight { .. }) {
1166 0.
1167 } else {
1168 ((visible_lines - (last_cursor_bottom - first_cursor_top)) / 2.0).floor()
1169 };
1170 if margin < 0.0 {
1171 return false;
1172 }
1173
1174 match autoscroll {
1175 Autoscroll::Fit | Autoscroll::Newest => {
1176 let margin = margin.min(self.vertical_scroll_margin);
1177 let target_top = (first_cursor_top - margin).max(0.0);
1178 let target_bottom = last_cursor_bottom + margin;
1179 let start_row = scroll_position.y();
1180 let end_row = start_row + visible_lines;
1181
1182 if target_top < start_row {
1183 scroll_position.set_y(target_top);
1184 self.set_scroll_position_internal(scroll_position, local, cx);
1185 } else if target_bottom >= end_row {
1186 scroll_position.set_y(target_bottom - visible_lines);
1187 self.set_scroll_position_internal(scroll_position, local, cx);
1188 }
1189 }
1190 Autoscroll::Center => {
1191 scroll_position.set_y((first_cursor_top - margin).max(0.0));
1192 self.set_scroll_position_internal(scroll_position, local, cx);
1193 }
1194 }
1195
1196 true
1197 }
1198
1199 pub fn autoscroll_horizontally(
1200 &mut self,
1201 start_row: u32,
1202 viewport_width: f32,
1203 scroll_width: f32,
1204 max_glyph_width: f32,
1205 layouts: &[text_layout::Line],
1206 cx: &mut ViewContext<Self>,
1207 ) -> bool {
1208 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1209 let selections = self.local_selections::<Point>(cx);
1210
1211 let mut target_left;
1212 let mut target_right;
1213
1214 if self.highlighted_rows.is_some() {
1215 target_left = 0.0_f32;
1216 target_right = 0.0_f32;
1217 } else {
1218 target_left = std::f32::INFINITY;
1219 target_right = 0.0_f32;
1220 for selection in selections {
1221 let head = selection.head().to_display_point(&display_map);
1222 if head.row() >= start_row && head.row() < start_row + layouts.len() as u32 {
1223 let start_column = head.column().saturating_sub(3);
1224 let end_column = cmp::min(display_map.line_len(head.row()), head.column() + 3);
1225 target_left = target_left.min(
1226 layouts[(head.row() - start_row) as usize]
1227 .x_for_index(start_column as usize),
1228 );
1229 target_right = target_right.max(
1230 layouts[(head.row() - start_row) as usize].x_for_index(end_column as usize)
1231 + max_glyph_width,
1232 );
1233 }
1234 }
1235 }
1236
1237 target_right = target_right.min(scroll_width);
1238
1239 if target_right - target_left > viewport_width {
1240 return false;
1241 }
1242
1243 let scroll_left = self.scroll_position.x() * max_glyph_width;
1244 let scroll_right = scroll_left + viewport_width;
1245
1246 if target_left < scroll_left {
1247 self.scroll_position.set_x(target_left / max_glyph_width);
1248 true
1249 } else if target_right > scroll_right {
1250 self.scroll_position
1251 .set_x((target_right - viewport_width) / max_glyph_width);
1252 true
1253 } else {
1254 false
1255 }
1256 }
1257
1258 pub fn move_selections(
1259 &mut self,
1260 cx: &mut ViewContext<Self>,
1261 move_selection: impl Fn(&DisplaySnapshot, &mut Selection<DisplayPoint>),
1262 ) {
1263 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1264 let selections = self
1265 .local_selections::<Point>(cx)
1266 .into_iter()
1267 .map(|selection| {
1268 let mut selection = Selection {
1269 id: selection.id,
1270 start: selection.start.to_display_point(&display_map),
1271 end: selection.end.to_display_point(&display_map),
1272 reversed: selection.reversed,
1273 goal: selection.goal,
1274 };
1275 move_selection(&display_map, &mut selection);
1276 Selection {
1277 id: selection.id,
1278 start: selection.start.to_point(&display_map),
1279 end: selection.end.to_point(&display_map),
1280 reversed: selection.reversed,
1281 goal: selection.goal,
1282 }
1283 })
1284 .collect();
1285 self.update_selections(selections, Some(Autoscroll::Fit), cx);
1286 }
1287
1288 pub fn move_selection_heads(
1289 &mut self,
1290 cx: &mut ViewContext<Self>,
1291 update_head: impl Fn(
1292 &DisplaySnapshot,
1293 DisplayPoint,
1294 SelectionGoal,
1295 ) -> (DisplayPoint, SelectionGoal),
1296 ) {
1297 self.move_selections(cx, |map, selection| {
1298 let (new_head, new_goal) = update_head(map, selection.head(), selection.goal);
1299 selection.set_head(new_head, new_goal);
1300 });
1301 }
1302
1303 pub fn move_cursors(
1304 &mut self,
1305 cx: &mut ViewContext<Self>,
1306 update_cursor_position: impl Fn(
1307 &DisplaySnapshot,
1308 DisplayPoint,
1309 SelectionGoal,
1310 ) -> (DisplayPoint, SelectionGoal),
1311 ) {
1312 self.move_selections(cx, |map, selection| {
1313 let (cursor, new_goal) = update_cursor_position(map, selection.head(), selection.goal);
1314 selection.collapse_to(cursor, new_goal)
1315 });
1316 }
1317
1318 fn select(&mut self, Select(phase): &Select, cx: &mut ViewContext<Self>) {
1319 self.hide_context_menu(cx);
1320
1321 match phase {
1322 SelectPhase::Begin {
1323 position,
1324 add,
1325 click_count,
1326 } => self.begin_selection(*position, *add, *click_count, cx),
1327 SelectPhase::BeginColumnar {
1328 position,
1329 overshoot,
1330 } => self.begin_columnar_selection(*position, *overshoot, cx),
1331 SelectPhase::Extend {
1332 position,
1333 click_count,
1334 } => self.extend_selection(*position, *click_count, cx),
1335 SelectPhase::Update {
1336 position,
1337 overshoot,
1338 scroll_position,
1339 } => self.update_selection(*position, *overshoot, *scroll_position, cx),
1340 SelectPhase::End => self.end_selection(cx),
1341 }
1342 }
1343
1344 fn extend_selection(
1345 &mut self,
1346 position: DisplayPoint,
1347 click_count: usize,
1348 cx: &mut ViewContext<Self>,
1349 ) {
1350 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1351 let tail = self
1352 .newest_selection_with_snapshot::<usize>(&display_map.buffer_snapshot)
1353 .tail();
1354 self.begin_selection(position, false, click_count, cx);
1355
1356 let position = position.to_offset(&display_map, Bias::Left);
1357 let tail_anchor = display_map.buffer_snapshot.anchor_before(tail);
1358 let mut pending = self.pending_selection.clone().unwrap();
1359
1360 if position >= tail {
1361 pending.selection.start = tail_anchor.clone();
1362 } else {
1363 pending.selection.end = tail_anchor.clone();
1364 pending.selection.reversed = true;
1365 }
1366
1367 match &mut pending.mode {
1368 SelectMode::Word(range) | SelectMode::Line(range) => {
1369 *range = tail_anchor.clone()..tail_anchor
1370 }
1371 _ => {}
1372 }
1373
1374 self.set_selections(self.selections.clone(), Some(pending), true, cx);
1375 }
1376
1377 fn begin_selection(
1378 &mut self,
1379 position: DisplayPoint,
1380 add: bool,
1381 click_count: usize,
1382 cx: &mut ViewContext<Self>,
1383 ) {
1384 if !self.focused {
1385 cx.focus_self();
1386 cx.emit(Event::Activate);
1387 }
1388
1389 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1390 let buffer = &display_map.buffer_snapshot;
1391 let newest_selection = self.newest_anchor_selection().clone();
1392
1393 let start;
1394 let end;
1395 let mode;
1396 match click_count {
1397 1 => {
1398 start = buffer.anchor_before(position.to_point(&display_map));
1399 end = start.clone();
1400 mode = SelectMode::Character;
1401 }
1402 2 => {
1403 let range = movement::surrounding_word(&display_map, position);
1404 start = buffer.anchor_before(range.start.to_point(&display_map));
1405 end = buffer.anchor_before(range.end.to_point(&display_map));
1406 mode = SelectMode::Word(start.clone()..end.clone());
1407 }
1408 3 => {
1409 let position = display_map
1410 .clip_point(position, Bias::Left)
1411 .to_point(&display_map);
1412 let line_start = display_map.prev_line_boundary(position).0;
1413 let next_line_start = buffer.clip_point(
1414 display_map.next_line_boundary(position).0 + Point::new(1, 0),
1415 Bias::Left,
1416 );
1417 start = buffer.anchor_before(line_start);
1418 end = buffer.anchor_before(next_line_start);
1419 mode = SelectMode::Line(start.clone()..end.clone());
1420 }
1421 _ => {
1422 start = buffer.anchor_before(0);
1423 end = buffer.anchor_before(buffer.len());
1424 mode = SelectMode::All;
1425 }
1426 }
1427
1428 let selection = Selection {
1429 id: post_inc(&mut self.next_selection_id),
1430 start,
1431 end,
1432 reversed: false,
1433 goal: SelectionGoal::None,
1434 };
1435
1436 let mut selections;
1437 if add {
1438 selections = self.selections.clone();
1439 // Remove the newest selection if it was added due to a previous mouse up
1440 // within this multi-click.
1441 if click_count > 1 {
1442 selections = self
1443 .selections
1444 .iter()
1445 .filter(|selection| selection.id != newest_selection.id)
1446 .cloned()
1447 .collect();
1448 }
1449 } else {
1450 selections = Arc::from([]);
1451 }
1452 self.set_selections(
1453 selections,
1454 Some(PendingSelection { selection, mode }),
1455 true,
1456 cx,
1457 );
1458
1459 cx.notify();
1460 }
1461
1462 fn begin_columnar_selection(
1463 &mut self,
1464 position: DisplayPoint,
1465 overshoot: u32,
1466 cx: &mut ViewContext<Self>,
1467 ) {
1468 if !self.focused {
1469 cx.focus_self();
1470 cx.emit(Event::Activate);
1471 }
1472
1473 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1474 let tail = self
1475 .newest_selection_with_snapshot::<Point>(&display_map.buffer_snapshot)
1476 .tail();
1477 self.columnar_selection_tail = Some(display_map.buffer_snapshot.anchor_before(tail));
1478
1479 self.select_columns(
1480 tail.to_display_point(&display_map),
1481 position,
1482 overshoot,
1483 &display_map,
1484 cx,
1485 );
1486 }
1487
1488 fn update_selection(
1489 &mut self,
1490 position: DisplayPoint,
1491 overshoot: u32,
1492 scroll_position: Vector2F,
1493 cx: &mut ViewContext<Self>,
1494 ) {
1495 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1496
1497 if let Some(tail) = self.columnar_selection_tail.as_ref() {
1498 let tail = tail.to_display_point(&display_map);
1499 self.select_columns(tail, position, overshoot, &display_map, cx);
1500 } else if let Some(mut pending) = self.pending_selection.clone() {
1501 let buffer = self.buffer.read(cx).snapshot(cx);
1502 let head;
1503 let tail;
1504 match &pending.mode {
1505 SelectMode::Character => {
1506 head = position.to_point(&display_map);
1507 tail = pending.selection.tail().to_point(&buffer);
1508 }
1509 SelectMode::Word(original_range) => {
1510 let original_display_range = original_range.start.to_display_point(&display_map)
1511 ..original_range.end.to_display_point(&display_map);
1512 let original_buffer_range = original_display_range.start.to_point(&display_map)
1513 ..original_display_range.end.to_point(&display_map);
1514 if movement::is_inside_word(&display_map, position)
1515 || original_display_range.contains(&position)
1516 {
1517 let word_range = movement::surrounding_word(&display_map, position);
1518 if word_range.start < original_display_range.start {
1519 head = word_range.start.to_point(&display_map);
1520 } else {
1521 head = word_range.end.to_point(&display_map);
1522 }
1523 } else {
1524 head = position.to_point(&display_map);
1525 }
1526
1527 if head <= original_buffer_range.start {
1528 tail = original_buffer_range.end;
1529 } else {
1530 tail = original_buffer_range.start;
1531 }
1532 }
1533 SelectMode::Line(original_range) => {
1534 let original_range = original_range.to_point(&display_map.buffer_snapshot);
1535
1536 let position = display_map
1537 .clip_point(position, Bias::Left)
1538 .to_point(&display_map);
1539 let line_start = display_map.prev_line_boundary(position).0;
1540 let next_line_start = buffer.clip_point(
1541 display_map.next_line_boundary(position).0 + Point::new(1, 0),
1542 Bias::Left,
1543 );
1544
1545 if line_start < original_range.start {
1546 head = line_start
1547 } else {
1548 head = next_line_start
1549 }
1550
1551 if head <= original_range.start {
1552 tail = original_range.end;
1553 } else {
1554 tail = original_range.start;
1555 }
1556 }
1557 SelectMode::All => {
1558 return;
1559 }
1560 };
1561
1562 if head < tail {
1563 pending.selection.start = buffer.anchor_before(head);
1564 pending.selection.end = buffer.anchor_before(tail);
1565 pending.selection.reversed = true;
1566 } else {
1567 pending.selection.start = buffer.anchor_before(tail);
1568 pending.selection.end = buffer.anchor_before(head);
1569 pending.selection.reversed = false;
1570 }
1571 self.set_selections(self.selections.clone(), Some(pending), true, cx);
1572 } else {
1573 log::error!("update_selection dispatched with no pending selection");
1574 return;
1575 }
1576
1577 self.set_scroll_position(scroll_position, cx);
1578 cx.notify();
1579 }
1580
1581 fn end_selection(&mut self, cx: &mut ViewContext<Self>) {
1582 self.columnar_selection_tail.take();
1583 if self.pending_selection.is_some() {
1584 let selections = self.local_selections::<usize>(cx);
1585 self.update_selections(selections, None, cx);
1586 }
1587 }
1588
1589 fn select_columns(
1590 &mut self,
1591 tail: DisplayPoint,
1592 head: DisplayPoint,
1593 overshoot: u32,
1594 display_map: &DisplaySnapshot,
1595 cx: &mut ViewContext<Self>,
1596 ) {
1597 let start_row = cmp::min(tail.row(), head.row());
1598 let end_row = cmp::max(tail.row(), head.row());
1599 let start_column = cmp::min(tail.column(), head.column() + overshoot);
1600 let end_column = cmp::max(tail.column(), head.column() + overshoot);
1601 let reversed = start_column < tail.column();
1602
1603 let selections = (start_row..=end_row)
1604 .filter_map(|row| {
1605 if start_column <= display_map.line_len(row) && !display_map.is_block_line(row) {
1606 let start = display_map
1607 .clip_point(DisplayPoint::new(row, start_column), Bias::Left)
1608 .to_point(&display_map);
1609 let end = display_map
1610 .clip_point(DisplayPoint::new(row, end_column), Bias::Right)
1611 .to_point(&display_map);
1612 Some(Selection {
1613 id: post_inc(&mut self.next_selection_id),
1614 start,
1615 end,
1616 reversed,
1617 goal: SelectionGoal::None,
1618 })
1619 } else {
1620 None
1621 }
1622 })
1623 .collect::<Vec<_>>();
1624
1625 self.update_selections(selections, None, cx);
1626 cx.notify();
1627 }
1628
1629 pub fn is_selecting(&self) -> bool {
1630 self.pending_selection.is_some() || self.columnar_selection_tail.is_some()
1631 }
1632
1633 pub fn cancel(&mut self, _: &Cancel, cx: &mut ViewContext<Self>) {
1634 if self.take_rename(false, cx).is_some() {
1635 return;
1636 }
1637
1638 if self.hide_context_menu(cx).is_some() {
1639 return;
1640 }
1641
1642 if self.snippet_stack.pop().is_some() {
1643 return;
1644 }
1645
1646 if self.mode != EditorMode::Full {
1647 cx.propagate_action();
1648 return;
1649 }
1650
1651 if self.active_diagnostics.is_some() {
1652 self.dismiss_diagnostics(cx);
1653 } else if let Some(pending) = self.pending_selection.clone() {
1654 let mut selections = self.selections.clone();
1655 if selections.is_empty() {
1656 selections = Arc::from([pending.selection]);
1657 }
1658 self.set_selections(selections, None, true, cx);
1659 self.request_autoscroll(Autoscroll::Fit, cx);
1660 } else {
1661 let mut oldest_selection = self.oldest_selection::<usize>(&cx);
1662 if self.selection_count() == 1 {
1663 if oldest_selection.is_empty() {
1664 cx.propagate_action();
1665 return;
1666 }
1667
1668 oldest_selection.start = oldest_selection.head().clone();
1669 oldest_selection.end = oldest_selection.head().clone();
1670 }
1671 self.update_selections(vec![oldest_selection], Some(Autoscroll::Fit), cx);
1672 }
1673 }
1674
1675 #[cfg(any(test, feature = "test-support"))]
1676 pub fn selected_ranges<D: TextDimension + Ord + Sub<D, Output = D>>(
1677 &self,
1678 cx: &AppContext,
1679 ) -> Vec<Range<D>> {
1680 self.local_selections::<D>(cx)
1681 .iter()
1682 .map(|s| {
1683 if s.reversed {
1684 s.end.clone()..s.start.clone()
1685 } else {
1686 s.start.clone()..s.end.clone()
1687 }
1688 })
1689 .collect()
1690 }
1691
1692 #[cfg(any(test, feature = "test-support"))]
1693 pub fn selected_display_ranges(&self, cx: &mut MutableAppContext) -> Vec<Range<DisplayPoint>> {
1694 let display_map = self
1695 .display_map
1696 .update(cx, |display_map, cx| display_map.snapshot(cx));
1697 self.selections
1698 .iter()
1699 .chain(
1700 self.pending_selection
1701 .as_ref()
1702 .map(|pending| &pending.selection),
1703 )
1704 .map(|s| {
1705 if s.reversed {
1706 s.end.to_display_point(&display_map)..s.start.to_display_point(&display_map)
1707 } else {
1708 s.start.to_display_point(&display_map)..s.end.to_display_point(&display_map)
1709 }
1710 })
1711 .collect()
1712 }
1713
1714 pub fn select_ranges<I, T>(
1715 &mut self,
1716 ranges: I,
1717 autoscroll: Option<Autoscroll>,
1718 cx: &mut ViewContext<Self>,
1719 ) where
1720 I: IntoIterator<Item = Range<T>>,
1721 T: ToOffset,
1722 {
1723 let buffer = self.buffer.read(cx).snapshot(cx);
1724 let selections = ranges
1725 .into_iter()
1726 .map(|range| {
1727 let mut start = range.start.to_offset(&buffer);
1728 let mut end = range.end.to_offset(&buffer);
1729 let reversed = if start > end {
1730 mem::swap(&mut start, &mut end);
1731 true
1732 } else {
1733 false
1734 };
1735 Selection {
1736 id: post_inc(&mut self.next_selection_id),
1737 start,
1738 end,
1739 reversed,
1740 goal: SelectionGoal::None,
1741 }
1742 })
1743 .collect::<Vec<_>>();
1744 self.update_selections(selections, autoscroll, cx);
1745 }
1746
1747 #[cfg(any(test, feature = "test-support"))]
1748 pub fn select_display_ranges<'a, T>(&mut self, ranges: T, cx: &mut ViewContext<Self>)
1749 where
1750 T: IntoIterator<Item = &'a Range<DisplayPoint>>,
1751 {
1752 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1753 let selections = ranges
1754 .into_iter()
1755 .map(|range| {
1756 let mut start = range.start;
1757 let mut end = range.end;
1758 let reversed = if start > end {
1759 mem::swap(&mut start, &mut end);
1760 true
1761 } else {
1762 false
1763 };
1764 Selection {
1765 id: post_inc(&mut self.next_selection_id),
1766 start: start.to_point(&display_map),
1767 end: end.to_point(&display_map),
1768 reversed,
1769 goal: SelectionGoal::None,
1770 }
1771 })
1772 .collect();
1773 self.update_selections(selections, None, cx);
1774 }
1775
1776 pub fn handle_input(&mut self, action: &Input, cx: &mut ViewContext<Self>) {
1777 let text = action.0.as_ref();
1778 if !self.skip_autoclose_end(text, cx) {
1779 self.transact(cx, |this, cx| {
1780 if !this.surround_with_bracket_pair(text, cx) {
1781 this.insert(text, cx);
1782 this.autoclose_bracket_pairs(cx);
1783 }
1784 });
1785 self.trigger_completion_on_input(text, cx);
1786 }
1787 }
1788
1789 pub fn newline(&mut self, _: &Newline, cx: &mut ViewContext<Self>) {
1790 self.transact(cx, |this, cx| {
1791 let mut old_selections = SmallVec::<[_; 32]>::new();
1792 {
1793 let selections = this.local_selections::<usize>(cx);
1794 let buffer = this.buffer.read(cx).snapshot(cx);
1795 for selection in selections.iter() {
1796 let start_point = selection.start.to_point(&buffer);
1797 let indent = buffer
1798 .indent_column_for_line(start_point.row)
1799 .min(start_point.column);
1800 let start = selection.start;
1801 let end = selection.end;
1802
1803 let mut insert_extra_newline = false;
1804 if let Some(language) = buffer.language() {
1805 let leading_whitespace_len = buffer
1806 .reversed_chars_at(start)
1807 .take_while(|c| c.is_whitespace() && *c != '\n')
1808 .map(|c| c.len_utf8())
1809 .sum::<usize>();
1810
1811 let trailing_whitespace_len = buffer
1812 .chars_at(end)
1813 .take_while(|c| c.is_whitespace() && *c != '\n')
1814 .map(|c| c.len_utf8())
1815 .sum::<usize>();
1816
1817 insert_extra_newline = language.brackets().iter().any(|pair| {
1818 let pair_start = pair.start.trim_end();
1819 let pair_end = pair.end.trim_start();
1820
1821 pair.newline
1822 && buffer.contains_str_at(end + trailing_whitespace_len, pair_end)
1823 && buffer.contains_str_at(
1824 (start - leading_whitespace_len)
1825 .saturating_sub(pair_start.len()),
1826 pair_start,
1827 )
1828 });
1829 }
1830
1831 old_selections.push((
1832 selection.id,
1833 buffer.anchor_after(end),
1834 start..end,
1835 indent,
1836 insert_extra_newline,
1837 ));
1838 }
1839 }
1840
1841 this.buffer.update(cx, |buffer, cx| {
1842 let mut delta = 0_isize;
1843 let mut pending_edit: Option<PendingEdit> = None;
1844 for (_, _, range, indent, insert_extra_newline) in &old_selections {
1845 if pending_edit.as_ref().map_or(false, |pending| {
1846 pending.indent != *indent
1847 || pending.insert_extra_newline != *insert_extra_newline
1848 }) {
1849 let pending = pending_edit.take().unwrap();
1850 let mut new_text = String::with_capacity(1 + pending.indent as usize);
1851 new_text.push('\n');
1852 new_text.extend(iter::repeat(' ').take(pending.indent as usize));
1853 if pending.insert_extra_newline {
1854 new_text = new_text.repeat(2);
1855 }
1856 buffer.edit_with_autoindent(pending.ranges, new_text, cx);
1857 delta += pending.delta;
1858 }
1859
1860 let start = (range.start as isize + delta) as usize;
1861 let end = (range.end as isize + delta) as usize;
1862 let mut text_len = *indent as usize + 1;
1863 if *insert_extra_newline {
1864 text_len *= 2;
1865 }
1866
1867 let pending = pending_edit.get_or_insert_with(Default::default);
1868 pending.delta += text_len as isize - (end - start) as isize;
1869 pending.indent = *indent;
1870 pending.insert_extra_newline = *insert_extra_newline;
1871 pending.ranges.push(start..end);
1872 }
1873
1874 let pending = pending_edit.unwrap();
1875 let mut new_text = String::with_capacity(1 + pending.indent as usize);
1876 new_text.push('\n');
1877 new_text.extend(iter::repeat(' ').take(pending.indent as usize));
1878 if pending.insert_extra_newline {
1879 new_text = new_text.repeat(2);
1880 }
1881 buffer.edit_with_autoindent(pending.ranges, new_text, cx);
1882
1883 let buffer = buffer.read(cx);
1884 this.selections = this
1885 .selections
1886 .iter()
1887 .cloned()
1888 .zip(old_selections)
1889 .map(
1890 |(mut new_selection, (_, end_anchor, _, _, insert_extra_newline))| {
1891 let mut cursor = end_anchor.to_point(&buffer);
1892 if insert_extra_newline {
1893 cursor.row -= 1;
1894 cursor.column = buffer.line_len(cursor.row);
1895 }
1896 let anchor = buffer.anchor_after(cursor);
1897 new_selection.start = anchor.clone();
1898 new_selection.end = anchor;
1899 new_selection
1900 },
1901 )
1902 .collect();
1903 });
1904
1905 this.request_autoscroll(Autoscroll::Fit, cx);
1906 });
1907
1908 #[derive(Default)]
1909 struct PendingEdit {
1910 indent: u32,
1911 insert_extra_newline: bool,
1912 delta: isize,
1913 ranges: SmallVec<[Range<usize>; 32]>,
1914 }
1915 }
1916
1917 pub fn insert(&mut self, text: &str, cx: &mut ViewContext<Self>) {
1918 self.transact(cx, |this, cx| {
1919 let old_selections = this.local_selections::<usize>(cx);
1920 let selection_anchors = this.buffer.update(cx, |buffer, cx| {
1921 let anchors = {
1922 let snapshot = buffer.read(cx);
1923 old_selections
1924 .iter()
1925 .map(|s| (s.id, s.goal, snapshot.anchor_after(s.end)))
1926 .collect::<Vec<_>>()
1927 };
1928 let edit_ranges = old_selections.iter().map(|s| s.start..s.end);
1929 buffer.edit_with_autoindent(edit_ranges, text, cx);
1930 anchors
1931 });
1932
1933 let selections = {
1934 let snapshot = this.buffer.read(cx).read(cx);
1935 selection_anchors
1936 .into_iter()
1937 .map(|(id, goal, position)| {
1938 let position = position.to_offset(&snapshot);
1939 Selection {
1940 id,
1941 start: position,
1942 end: position,
1943 goal,
1944 reversed: false,
1945 }
1946 })
1947 .collect()
1948 };
1949 this.update_selections(selections, Some(Autoscroll::Fit), cx);
1950 });
1951 }
1952
1953 fn trigger_completion_on_input(&mut self, text: &str, cx: &mut ViewContext<Self>) {
1954 let selection = self.newest_anchor_selection();
1955 if self
1956 .buffer
1957 .read(cx)
1958 .is_completion_trigger(selection.head(), text, cx)
1959 {
1960 self.show_completions(&ShowCompletions, cx);
1961 } else {
1962 self.hide_context_menu(cx);
1963 }
1964 }
1965
1966 fn surround_with_bracket_pair(&mut self, text: &str, cx: &mut ViewContext<Self>) -> bool {
1967 let snapshot = self.buffer.read(cx).snapshot(cx);
1968 if let Some(pair) = snapshot
1969 .language()
1970 .and_then(|language| language.brackets().iter().find(|b| b.start == text))
1971 .cloned()
1972 {
1973 if self
1974 .local_selections::<usize>(cx)
1975 .iter()
1976 .any(|selection| selection.is_empty())
1977 {
1978 false
1979 } else {
1980 let mut selections = self.selections.to_vec();
1981 for selection in &mut selections {
1982 selection.end = selection.end.bias_left(&snapshot);
1983 }
1984 drop(snapshot);
1985
1986 self.buffer.update(cx, |buffer, cx| {
1987 buffer.edit(
1988 selections.iter().map(|s| s.start.clone()..s.start.clone()),
1989 &pair.start,
1990 cx,
1991 );
1992 buffer.edit(
1993 selections.iter().map(|s| s.end.clone()..s.end.clone()),
1994 &pair.end,
1995 cx,
1996 );
1997 });
1998
1999 let snapshot = self.buffer.read(cx).read(cx);
2000 for selection in &mut selections {
2001 selection.end = selection.end.bias_right(&snapshot);
2002 }
2003 drop(snapshot);
2004
2005 self.set_selections(selections.into(), None, true, cx);
2006 true
2007 }
2008 } else {
2009 false
2010 }
2011 }
2012
2013 fn autoclose_bracket_pairs(&mut self, cx: &mut ViewContext<Self>) {
2014 let selections = self.local_selections::<usize>(cx);
2015 let mut bracket_pair_state = None;
2016 let mut new_selections = None;
2017 self.buffer.update(cx, |buffer, cx| {
2018 let mut snapshot = buffer.snapshot(cx);
2019 let left_biased_selections = selections
2020 .iter()
2021 .map(|selection| Selection {
2022 id: selection.id,
2023 start: snapshot.anchor_before(selection.start),
2024 end: snapshot.anchor_before(selection.end),
2025 reversed: selection.reversed,
2026 goal: selection.goal,
2027 })
2028 .collect::<Vec<_>>();
2029
2030 let autoclose_pair = snapshot.language().and_then(|language| {
2031 let first_selection_start = selections.first().unwrap().start;
2032 let pair = language.brackets().iter().find(|pair| {
2033 snapshot.contains_str_at(
2034 first_selection_start.saturating_sub(pair.start.len()),
2035 &pair.start,
2036 )
2037 });
2038 pair.and_then(|pair| {
2039 let should_autoclose = selections.iter().all(|selection| {
2040 // Ensure all selections are parked at the end of a pair start.
2041 if snapshot.contains_str_at(
2042 selection.start.saturating_sub(pair.start.len()),
2043 &pair.start,
2044 ) {
2045 snapshot
2046 .chars_at(selection.start)
2047 .next()
2048 .map_or(true, |c| language.should_autoclose_before(c))
2049 } else {
2050 false
2051 }
2052 });
2053
2054 if should_autoclose {
2055 Some(pair.clone())
2056 } else {
2057 None
2058 }
2059 })
2060 });
2061
2062 if let Some(pair) = autoclose_pair {
2063 let selection_ranges = selections
2064 .iter()
2065 .map(|selection| {
2066 let start = selection.start.to_offset(&snapshot);
2067 start..start
2068 })
2069 .collect::<SmallVec<[_; 32]>>();
2070
2071 buffer.edit(selection_ranges, &pair.end, cx);
2072 snapshot = buffer.snapshot(cx);
2073
2074 new_selections = Some(
2075 self.resolve_selections::<usize, _>(left_biased_selections.iter(), &snapshot)
2076 .collect::<Vec<_>>(),
2077 );
2078
2079 if pair.end.len() == 1 {
2080 let mut delta = 0;
2081 bracket_pair_state = Some(BracketPairState {
2082 ranges: selections
2083 .iter()
2084 .map(move |selection| {
2085 let offset = selection.start + delta;
2086 delta += 1;
2087 snapshot.anchor_before(offset)..snapshot.anchor_after(offset)
2088 })
2089 .collect(),
2090 pair,
2091 });
2092 }
2093 }
2094 });
2095
2096 if let Some(new_selections) = new_selections {
2097 self.update_selections(new_selections, None, cx);
2098 }
2099 if let Some(bracket_pair_state) = bracket_pair_state {
2100 self.autoclose_stack.push(bracket_pair_state);
2101 }
2102 }
2103
2104 fn skip_autoclose_end(&mut self, text: &str, cx: &mut ViewContext<Self>) -> bool {
2105 let old_selections = self.local_selections::<usize>(cx);
2106 let autoclose_pair = if let Some(autoclose_pair) = self.autoclose_stack.last() {
2107 autoclose_pair
2108 } else {
2109 return false;
2110 };
2111 if text != autoclose_pair.pair.end {
2112 return false;
2113 }
2114
2115 debug_assert_eq!(old_selections.len(), autoclose_pair.ranges.len());
2116
2117 let buffer = self.buffer.read(cx).snapshot(cx);
2118 if old_selections
2119 .iter()
2120 .zip(autoclose_pair.ranges.iter().map(|r| r.to_offset(&buffer)))
2121 .all(|(selection, autoclose_range)| {
2122 let autoclose_range_end = autoclose_range.end.to_offset(&buffer);
2123 selection.is_empty() && selection.start == autoclose_range_end
2124 })
2125 {
2126 let new_selections = old_selections
2127 .into_iter()
2128 .map(|selection| {
2129 let cursor = selection.start + 1;
2130 Selection {
2131 id: selection.id,
2132 start: cursor,
2133 end: cursor,
2134 reversed: false,
2135 goal: SelectionGoal::None,
2136 }
2137 })
2138 .collect();
2139 self.autoclose_stack.pop();
2140 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
2141 true
2142 } else {
2143 false
2144 }
2145 }
2146
2147 fn completion_query(buffer: &MultiBufferSnapshot, position: impl ToOffset) -> Option<String> {
2148 let offset = position.to_offset(buffer);
2149 let (word_range, kind) = buffer.surrounding_word(offset);
2150 if offset > word_range.start && kind == Some(CharKind::Word) {
2151 Some(
2152 buffer
2153 .text_for_range(word_range.start..offset)
2154 .collect::<String>(),
2155 )
2156 } else {
2157 None
2158 }
2159 }
2160
2161 fn show_completions(&mut self, _: &ShowCompletions, cx: &mut ViewContext<Self>) {
2162 if self.pending_rename.is_some() {
2163 return;
2164 }
2165
2166 let project = if let Some(project) = self.project.clone() {
2167 project
2168 } else {
2169 return;
2170 };
2171
2172 let position = self.newest_anchor_selection().head();
2173 let (buffer, buffer_position) = if let Some(output) = self
2174 .buffer
2175 .read(cx)
2176 .text_anchor_for_position(position.clone(), cx)
2177 {
2178 output
2179 } else {
2180 return;
2181 };
2182
2183 let query = Self::completion_query(&self.buffer.read(cx).read(cx), position.clone());
2184 let completions = project.update(cx, |project, cx| {
2185 project.completions(&buffer, buffer_position.clone(), cx)
2186 });
2187
2188 let id = post_inc(&mut self.next_completion_id);
2189 let task = cx.spawn_weak(|this, mut cx| {
2190 async move {
2191 let completions = completions.await?;
2192 if completions.is_empty() {
2193 return Ok(());
2194 }
2195
2196 let mut menu = CompletionsMenu {
2197 id,
2198 initial_position: position,
2199 match_candidates: completions
2200 .iter()
2201 .enumerate()
2202 .map(|(id, completion)| {
2203 StringMatchCandidate::new(
2204 id,
2205 completion.label.text[completion.label.filter_range.clone()].into(),
2206 )
2207 })
2208 .collect(),
2209 buffer,
2210 completions: completions.into(),
2211 matches: Vec::new().into(),
2212 selected_item: 0,
2213 list: Default::default(),
2214 };
2215
2216 menu.filter(query.as_deref(), cx.background()).await;
2217
2218 if let Some(this) = this.upgrade(&cx) {
2219 this.update(&mut cx, |this, cx| {
2220 match this.context_menu.as_ref() {
2221 None => {}
2222 Some(ContextMenu::Completions(prev_menu)) => {
2223 if prev_menu.id > menu.id {
2224 return;
2225 }
2226 }
2227 _ => return,
2228 }
2229
2230 this.completion_tasks.retain(|(id, _)| *id > menu.id);
2231 if this.focused {
2232 this.show_context_menu(ContextMenu::Completions(menu), cx);
2233 }
2234
2235 cx.notify();
2236 });
2237 }
2238 Ok::<_, anyhow::Error>(())
2239 }
2240 .log_err()
2241 });
2242 self.completion_tasks.push((id, task));
2243 }
2244
2245 pub fn confirm_completion(
2246 &mut self,
2247 ConfirmCompletion(completion_ix): &ConfirmCompletion,
2248 cx: &mut ViewContext<Self>,
2249 ) -> Option<Task<Result<()>>> {
2250 use language::ToOffset as _;
2251
2252 let completions_menu = if let ContextMenu::Completions(menu) = self.hide_context_menu(cx)? {
2253 menu
2254 } else {
2255 return None;
2256 };
2257
2258 let mat = completions_menu
2259 .matches
2260 .get(completion_ix.unwrap_or(completions_menu.selected_item))?;
2261 let buffer_handle = completions_menu.buffer;
2262 let completion = completions_menu.completions.get(mat.candidate_id)?;
2263
2264 let snippet;
2265 let text;
2266 if completion.is_snippet() {
2267 snippet = Some(Snippet::parse(&completion.new_text).log_err()?);
2268 text = snippet.as_ref().unwrap().text.clone();
2269 } else {
2270 snippet = None;
2271 text = completion.new_text.clone();
2272 };
2273 let buffer = buffer_handle.read(cx);
2274 let old_range = completion.old_range.to_offset(&buffer);
2275 let old_text = buffer.text_for_range(old_range.clone()).collect::<String>();
2276
2277 let selections = self.local_selections::<usize>(cx);
2278 let newest_selection = self.newest_anchor_selection();
2279 if newest_selection.start.buffer_id != Some(buffer_handle.id()) {
2280 return None;
2281 }
2282
2283 let lookbehind = newest_selection
2284 .start
2285 .text_anchor
2286 .to_offset(buffer)
2287 .saturating_sub(old_range.start);
2288 let lookahead = old_range
2289 .end
2290 .saturating_sub(newest_selection.end.text_anchor.to_offset(buffer));
2291 let mut common_prefix_len = old_text
2292 .bytes()
2293 .zip(text.bytes())
2294 .take_while(|(a, b)| a == b)
2295 .count();
2296
2297 let snapshot = self.buffer.read(cx).snapshot(cx);
2298 let mut ranges = Vec::new();
2299 for selection in &selections {
2300 if snapshot.contains_str_at(selection.start.saturating_sub(lookbehind), &old_text) {
2301 let start = selection.start.saturating_sub(lookbehind);
2302 let end = selection.end + lookahead;
2303 ranges.push(start + common_prefix_len..end);
2304 } else {
2305 common_prefix_len = 0;
2306 ranges.clear();
2307 ranges.extend(selections.iter().map(|s| {
2308 if s.id == newest_selection.id {
2309 old_range.clone()
2310 } else {
2311 s.start..s.end
2312 }
2313 }));
2314 break;
2315 }
2316 }
2317 let text = &text[common_prefix_len..];
2318
2319 self.transact(cx, |this, cx| {
2320 if let Some(mut snippet) = snippet {
2321 snippet.text = text.to_string();
2322 for tabstop in snippet.tabstops.iter_mut().flatten() {
2323 tabstop.start -= common_prefix_len as isize;
2324 tabstop.end -= common_prefix_len as isize;
2325 }
2326
2327 this.insert_snippet(&ranges, snippet, cx).log_err();
2328 } else {
2329 this.buffer.update(cx, |buffer, cx| {
2330 buffer.edit_with_autoindent(ranges, text, cx);
2331 });
2332 }
2333 });
2334
2335 let project = self.project.clone()?;
2336 let apply_edits = project.update(cx, |project, cx| {
2337 project.apply_additional_edits_for_completion(
2338 buffer_handle,
2339 completion.clone(),
2340 true,
2341 cx,
2342 )
2343 });
2344 Some(cx.foreground().spawn(async move {
2345 apply_edits.await?;
2346 Ok(())
2347 }))
2348 }
2349
2350 pub fn toggle_code_actions(
2351 &mut self,
2352 &ToggleCodeActions(deployed_from_indicator): &ToggleCodeActions,
2353 cx: &mut ViewContext<Self>,
2354 ) {
2355 if matches!(
2356 self.context_menu.as_ref(),
2357 Some(ContextMenu::CodeActions(_))
2358 ) {
2359 self.context_menu.take();
2360 cx.notify();
2361 return;
2362 }
2363
2364 let mut task = self.code_actions_task.take();
2365 cx.spawn_weak(|this, mut cx| async move {
2366 while let Some(prev_task) = task {
2367 prev_task.await;
2368 task = this
2369 .upgrade(&cx)
2370 .and_then(|this| this.update(&mut cx, |this, _| this.code_actions_task.take()));
2371 }
2372
2373 if let Some(this) = this.upgrade(&cx) {
2374 this.update(&mut cx, |this, cx| {
2375 if this.focused {
2376 if let Some((buffer, actions)) = this.available_code_actions.clone() {
2377 this.show_context_menu(
2378 ContextMenu::CodeActions(CodeActionsMenu {
2379 buffer,
2380 actions,
2381 selected_item: Default::default(),
2382 list: Default::default(),
2383 deployed_from_indicator,
2384 }),
2385 cx,
2386 );
2387 }
2388 }
2389 })
2390 }
2391 Ok::<_, anyhow::Error>(())
2392 })
2393 .detach_and_log_err(cx);
2394 }
2395
2396 pub fn confirm_code_action(
2397 workspace: &mut Workspace,
2398 ConfirmCodeAction(action_ix): &ConfirmCodeAction,
2399 cx: &mut ViewContext<Workspace>,
2400 ) -> Option<Task<Result<()>>> {
2401 let editor = workspace.active_item(cx)?.act_as::<Editor>(cx)?;
2402 let actions_menu = if let ContextMenu::CodeActions(menu) =
2403 editor.update(cx, |editor, cx| editor.hide_context_menu(cx))?
2404 {
2405 menu
2406 } else {
2407 return None;
2408 };
2409 let action_ix = action_ix.unwrap_or(actions_menu.selected_item);
2410 let action = actions_menu.actions.get(action_ix)?.clone();
2411 let title = action.lsp_action.title.clone();
2412 let buffer = actions_menu.buffer;
2413
2414 let apply_code_actions = workspace.project().clone().update(cx, |project, cx| {
2415 project.apply_code_action(buffer, action, true, cx)
2416 });
2417 Some(cx.spawn(|workspace, cx| async move {
2418 let project_transaction = apply_code_actions.await?;
2419 Self::open_project_transaction(editor, workspace, project_transaction, title, cx).await
2420 }))
2421 }
2422
2423 async fn open_project_transaction(
2424 this: ViewHandle<Editor>,
2425 workspace: ViewHandle<Workspace>,
2426 transaction: ProjectTransaction,
2427 title: String,
2428 mut cx: AsyncAppContext,
2429 ) -> Result<()> {
2430 let replica_id = this.read_with(&cx, |this, cx| this.replica_id(cx));
2431
2432 // If the project transaction's edits are all contained within this editor, then
2433 // avoid opening a new editor to display them.
2434 let mut entries = transaction.0.iter();
2435 if let Some((buffer, transaction)) = entries.next() {
2436 if entries.next().is_none() {
2437 let excerpt = this.read_with(&cx, |editor, cx| {
2438 editor
2439 .buffer()
2440 .read(cx)
2441 .excerpt_containing(editor.newest_anchor_selection().head(), cx)
2442 });
2443 if let Some((excerpted_buffer, excerpt_range)) = excerpt {
2444 if excerpted_buffer == *buffer {
2445 let snapshot = buffer.read_with(&cx, |buffer, _| buffer.snapshot());
2446 let excerpt_range = excerpt_range.to_offset(&snapshot);
2447 if snapshot
2448 .edited_ranges_for_transaction(transaction)
2449 .all(|range| {
2450 excerpt_range.start <= range.start && excerpt_range.end >= range.end
2451 })
2452 {
2453 return Ok(());
2454 }
2455 }
2456 }
2457 }
2458 }
2459
2460 let mut ranges_to_highlight = Vec::new();
2461 let excerpt_buffer = cx.add_model(|cx| {
2462 let mut multibuffer = MultiBuffer::new(replica_id).with_title(title);
2463 for (buffer, transaction) in &transaction.0 {
2464 let snapshot = buffer.read(cx).snapshot();
2465 ranges_to_highlight.extend(
2466 multibuffer.push_excerpts_with_context_lines(
2467 buffer.clone(),
2468 snapshot
2469 .edited_ranges_for_transaction::<usize>(transaction)
2470 .collect(),
2471 1,
2472 cx,
2473 ),
2474 );
2475 }
2476 multibuffer.push_transaction(&transaction.0);
2477 multibuffer
2478 });
2479
2480 workspace.update(&mut cx, |workspace, cx| {
2481 let project = workspace.project().clone();
2482 let editor =
2483 cx.add_view(|cx| Editor::for_multibuffer(excerpt_buffer, Some(project), cx));
2484 workspace.add_item(Box::new(editor.clone()), cx);
2485 editor.update(cx, |editor, cx| {
2486 let color = editor.style(cx).highlighted_line_background;
2487 editor.highlight_background::<Self>(ranges_to_highlight, color, cx);
2488 });
2489 });
2490
2491 Ok(())
2492 }
2493
2494 fn refresh_code_actions(&mut self, cx: &mut ViewContext<Self>) -> Option<()> {
2495 let project = self.project.as_ref()?;
2496 let buffer = self.buffer.read(cx);
2497 let newest_selection = self.newest_anchor_selection().clone();
2498 let (start_buffer, start) = buffer.text_anchor_for_position(newest_selection.start, cx)?;
2499 let (end_buffer, end) = buffer.text_anchor_for_position(newest_selection.end, cx)?;
2500 if start_buffer != end_buffer {
2501 return None;
2502 }
2503
2504 let actions = project.update(cx, |project, cx| {
2505 project.code_actions(&start_buffer, start..end, cx)
2506 });
2507 self.code_actions_task = Some(cx.spawn_weak(|this, mut cx| async move {
2508 let actions = actions.await;
2509 if let Some(this) = this.upgrade(&cx) {
2510 this.update(&mut cx, |this, cx| {
2511 this.available_code_actions = actions.log_err().and_then(|actions| {
2512 if actions.is_empty() {
2513 None
2514 } else {
2515 Some((start_buffer, actions.into()))
2516 }
2517 });
2518 cx.notify();
2519 })
2520 }
2521 }));
2522 None
2523 }
2524
2525 fn refresh_document_highlights(&mut self, cx: &mut ViewContext<Self>) -> Option<()> {
2526 if self.pending_rename.is_some() {
2527 return None;
2528 }
2529
2530 let project = self.project.as_ref()?;
2531 let buffer = self.buffer.read(cx);
2532 let newest_selection = self.newest_anchor_selection().clone();
2533 let cursor_position = newest_selection.head();
2534 let (cursor_buffer, cursor_buffer_position) =
2535 buffer.text_anchor_for_position(cursor_position.clone(), cx)?;
2536 let (tail_buffer, _) = buffer.text_anchor_for_position(newest_selection.tail(), cx)?;
2537 if cursor_buffer != tail_buffer {
2538 return None;
2539 }
2540
2541 let highlights = project.update(cx, |project, cx| {
2542 project.document_highlights(&cursor_buffer, cursor_buffer_position, cx)
2543 });
2544
2545 self.document_highlights_task = Some(cx.spawn_weak(|this, mut cx| async move {
2546 let highlights = highlights.log_err().await;
2547 if let Some((this, highlights)) = this.upgrade(&cx).zip(highlights) {
2548 this.update(&mut cx, |this, cx| {
2549 if this.pending_rename.is_some() {
2550 return;
2551 }
2552
2553 let buffer_id = cursor_position.buffer_id;
2554 let style = this.style(cx);
2555 let read_background = style.document_highlight_read_background;
2556 let write_background = style.document_highlight_write_background;
2557 let buffer = this.buffer.read(cx);
2558 if !buffer
2559 .text_anchor_for_position(cursor_position, cx)
2560 .map_or(false, |(buffer, _)| buffer == cursor_buffer)
2561 {
2562 return;
2563 }
2564
2565 let cursor_buffer_snapshot = cursor_buffer.read(cx);
2566 let mut write_ranges = Vec::new();
2567 let mut read_ranges = Vec::new();
2568 for highlight in highlights {
2569 for (excerpt_id, excerpt_range) in
2570 buffer.excerpts_for_buffer(&cursor_buffer, cx)
2571 {
2572 let start = highlight
2573 .range
2574 .start
2575 .max(&excerpt_range.start, cursor_buffer_snapshot);
2576 let end = highlight
2577 .range
2578 .end
2579 .min(&excerpt_range.end, cursor_buffer_snapshot);
2580 if start.cmp(&end, cursor_buffer_snapshot).is_ge() {
2581 continue;
2582 }
2583
2584 let range = Anchor {
2585 buffer_id,
2586 excerpt_id: excerpt_id.clone(),
2587 text_anchor: start,
2588 }..Anchor {
2589 buffer_id,
2590 excerpt_id,
2591 text_anchor: end,
2592 };
2593 if highlight.kind == lsp::DocumentHighlightKind::WRITE {
2594 write_ranges.push(range);
2595 } else {
2596 read_ranges.push(range);
2597 }
2598 }
2599 }
2600
2601 this.highlight_background::<DocumentHighlightRead>(
2602 read_ranges,
2603 read_background,
2604 cx,
2605 );
2606 this.highlight_background::<DocumentHighlightWrite>(
2607 write_ranges,
2608 write_background,
2609 cx,
2610 );
2611 cx.notify();
2612 });
2613 }
2614 }));
2615 None
2616 }
2617
2618 pub fn render_code_actions_indicator(
2619 &self,
2620 style: &EditorStyle,
2621 cx: &mut ViewContext<Self>,
2622 ) -> Option<ElementBox> {
2623 if self.available_code_actions.is_some() {
2624 enum Tag {}
2625 Some(
2626 MouseEventHandler::new::<Tag, _, _>(0, cx, |_, _| {
2627 Svg::new("icons/zap.svg")
2628 .with_color(style.code_actions_indicator)
2629 .boxed()
2630 })
2631 .with_cursor_style(CursorStyle::PointingHand)
2632 .with_padding(Padding::uniform(3.))
2633 .on_mouse_down(|cx| {
2634 cx.dispatch_action(ToggleCodeActions(true));
2635 })
2636 .boxed(),
2637 )
2638 } else {
2639 None
2640 }
2641 }
2642
2643 pub fn context_menu_visible(&self) -> bool {
2644 self.context_menu
2645 .as_ref()
2646 .map_or(false, |menu| menu.visible())
2647 }
2648
2649 pub fn render_context_menu(
2650 &self,
2651 cursor_position: DisplayPoint,
2652 style: EditorStyle,
2653 cx: &AppContext,
2654 ) -> Option<(DisplayPoint, ElementBox)> {
2655 self.context_menu
2656 .as_ref()
2657 .map(|menu| menu.render(cursor_position, style, cx))
2658 }
2659
2660 fn show_context_menu(&mut self, menu: ContextMenu, cx: &mut ViewContext<Self>) {
2661 if !matches!(menu, ContextMenu::Completions(_)) {
2662 self.completion_tasks.clear();
2663 }
2664 self.context_menu = Some(menu);
2665 cx.notify();
2666 }
2667
2668 fn hide_context_menu(&mut self, cx: &mut ViewContext<Self>) -> Option<ContextMenu> {
2669 cx.notify();
2670 self.completion_tasks.clear();
2671 self.context_menu.take()
2672 }
2673
2674 pub fn insert_snippet(
2675 &mut self,
2676 insertion_ranges: &[Range<usize>],
2677 snippet: Snippet,
2678 cx: &mut ViewContext<Self>,
2679 ) -> Result<()> {
2680 let tabstops = self.buffer.update(cx, |buffer, cx| {
2681 buffer.edit_with_autoindent(insertion_ranges.iter().cloned(), &snippet.text, cx);
2682
2683 let snapshot = &*buffer.read(cx);
2684 let snippet = &snippet;
2685 snippet
2686 .tabstops
2687 .iter()
2688 .map(|tabstop| {
2689 let mut tabstop_ranges = tabstop
2690 .iter()
2691 .flat_map(|tabstop_range| {
2692 let mut delta = 0 as isize;
2693 insertion_ranges.iter().map(move |insertion_range| {
2694 let insertion_start = insertion_range.start as isize + delta;
2695 delta +=
2696 snippet.text.len() as isize - insertion_range.len() as isize;
2697
2698 let start = snapshot.anchor_before(
2699 (insertion_start + tabstop_range.start) as usize,
2700 );
2701 let end = snapshot
2702 .anchor_after((insertion_start + tabstop_range.end) as usize);
2703 start..end
2704 })
2705 })
2706 .collect::<Vec<_>>();
2707 tabstop_ranges.sort_unstable_by(|a, b| a.start.cmp(&b.start, snapshot));
2708 tabstop_ranges
2709 })
2710 .collect::<Vec<_>>()
2711 });
2712
2713 if let Some(tabstop) = tabstops.first() {
2714 self.select_ranges(tabstop.iter().cloned(), Some(Autoscroll::Fit), cx);
2715 self.snippet_stack.push(SnippetState {
2716 active_index: 0,
2717 ranges: tabstops,
2718 });
2719 }
2720
2721 Ok(())
2722 }
2723
2724 pub fn move_to_next_snippet_tabstop(&mut self, cx: &mut ViewContext<Self>) -> bool {
2725 self.move_to_snippet_tabstop(Bias::Right, cx)
2726 }
2727
2728 pub fn move_to_prev_snippet_tabstop(&mut self, cx: &mut ViewContext<Self>) {
2729 self.move_to_snippet_tabstop(Bias::Left, cx);
2730 }
2731
2732 pub fn move_to_snippet_tabstop(&mut self, bias: Bias, cx: &mut ViewContext<Self>) -> bool {
2733 let buffer = self.buffer.read(cx).snapshot(cx);
2734
2735 if let Some(snippet) = self.snippet_stack.last_mut() {
2736 match bias {
2737 Bias::Left => {
2738 if snippet.active_index > 0 {
2739 snippet.active_index -= 1;
2740 } else {
2741 return false;
2742 }
2743 }
2744 Bias::Right => {
2745 if snippet.active_index + 1 < snippet.ranges.len() {
2746 snippet.active_index += 1;
2747 } else {
2748 return false;
2749 }
2750 }
2751 }
2752 if let Some(current_ranges) = snippet.ranges.get(snippet.active_index) {
2753 let new_selections = current_ranges
2754 .iter()
2755 .map(|new_range| {
2756 let new_range = new_range.to_offset(&buffer);
2757 Selection {
2758 id: post_inc(&mut self.next_selection_id),
2759 start: new_range.start,
2760 end: new_range.end,
2761 reversed: false,
2762 goal: SelectionGoal::None,
2763 }
2764 })
2765 .collect();
2766
2767 // Remove the snippet state when moving to the last tabstop.
2768 if snippet.active_index + 1 == snippet.ranges.len() {
2769 self.snippet_stack.pop();
2770 }
2771
2772 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
2773 return true;
2774 }
2775 self.snippet_stack.pop();
2776 }
2777
2778 false
2779 }
2780
2781 pub fn clear(&mut self, cx: &mut ViewContext<Self>) {
2782 self.transact(cx, |this, cx| {
2783 this.select_all(&SelectAll, cx);
2784 this.insert("", cx);
2785 });
2786 }
2787
2788 pub fn backspace(&mut self, _: &Backspace, cx: &mut ViewContext<Self>) {
2789 let mut selections = self.local_selections::<Point>(cx);
2790 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2791 for selection in &mut selections {
2792 if selection.is_empty() {
2793 let old_head = selection.head();
2794 let mut new_head =
2795 movement::left(&display_map, old_head.to_display_point(&display_map))
2796 .to_point(&display_map);
2797 if let Some((buffer, line_buffer_range)) = display_map
2798 .buffer_snapshot
2799 .buffer_line_for_row(old_head.row)
2800 {
2801 let indent_column = buffer.indent_column_for_line(line_buffer_range.start.row);
2802 if old_head.column <= indent_column && old_head.column > 0 {
2803 let indent = buffer.indent_size();
2804 new_head = cmp::min(
2805 new_head,
2806 Point::new(old_head.row, ((old_head.column - 1) / indent) * indent),
2807 );
2808 }
2809 }
2810
2811 selection.set_head(new_head, SelectionGoal::None);
2812 }
2813 }
2814
2815 self.transact(cx, |this, cx| {
2816 this.update_selections(selections, Some(Autoscroll::Fit), cx);
2817 this.insert("", cx);
2818 });
2819 }
2820
2821 pub fn delete(&mut self, _: &Delete, cx: &mut ViewContext<Self>) {
2822 self.transact(cx, |this, cx| {
2823 this.move_selections(cx, |map, selection| {
2824 if selection.is_empty() {
2825 let cursor = movement::right(map, selection.head());
2826 selection.set_head(cursor, SelectionGoal::None);
2827 }
2828 });
2829 this.insert(&"", cx);
2830 });
2831 }
2832
2833 pub fn tab(&mut self, _: &Tab, cx: &mut ViewContext<Self>) {
2834 if self.move_to_next_snippet_tabstop(cx) {
2835 return;
2836 }
2837
2838 let tab_size = cx.global::<Settings>().tab_size;
2839 let mut selections = self.local_selections::<Point>(cx);
2840 self.transact(cx, |this, cx| {
2841 let mut last_indent = None;
2842 this.buffer.update(cx, |buffer, cx| {
2843 for selection in &mut selections {
2844 if selection.is_empty() {
2845 let char_column = buffer
2846 .read(cx)
2847 .text_for_range(Point::new(selection.start.row, 0)..selection.start)
2848 .flat_map(str::chars)
2849 .count();
2850 let chars_to_next_tab_stop = tab_size - (char_column % tab_size);
2851 buffer.edit(
2852 [selection.start..selection.start],
2853 " ".repeat(chars_to_next_tab_stop),
2854 cx,
2855 );
2856 selection.start.column += chars_to_next_tab_stop as u32;
2857 selection.end = selection.start;
2858 } else {
2859 let mut start_row = selection.start.row;
2860 let mut end_row = selection.end.row + 1;
2861
2862 // If a selection ends at the beginning of a line, don't indent
2863 // that last line.
2864 if selection.end.column == 0 {
2865 end_row -= 1;
2866 }
2867
2868 // Avoid re-indenting a row that has already been indented by a
2869 // previous selection, but still update this selection's column
2870 // to reflect that indentation.
2871 if let Some((last_indent_row, last_indent_len)) = last_indent {
2872 if last_indent_row == selection.start.row {
2873 selection.start.column += last_indent_len;
2874 start_row += 1;
2875 }
2876 if last_indent_row == selection.end.row {
2877 selection.end.column += last_indent_len;
2878 }
2879 }
2880
2881 for row in start_row..end_row {
2882 let indent_column =
2883 buffer.read(cx).indent_column_for_line(row) as usize;
2884 let columns_to_next_tab_stop = tab_size - (indent_column % tab_size);
2885 let row_start = Point::new(row, 0);
2886 buffer.edit(
2887 [row_start..row_start],
2888 " ".repeat(columns_to_next_tab_stop),
2889 cx,
2890 );
2891
2892 // Update this selection's endpoints to reflect the indentation.
2893 if row == selection.start.row {
2894 selection.start.column += columns_to_next_tab_stop as u32;
2895 }
2896 if row == selection.end.row {
2897 selection.end.column += columns_to_next_tab_stop as u32;
2898 }
2899
2900 last_indent = Some((row, columns_to_next_tab_stop as u32));
2901 }
2902 }
2903 }
2904 });
2905
2906 this.update_selections(selections, Some(Autoscroll::Fit), cx);
2907 });
2908 }
2909
2910 pub fn outdent(&mut self, _: &Outdent, cx: &mut ViewContext<Self>) {
2911 if !self.snippet_stack.is_empty() {
2912 self.move_to_prev_snippet_tabstop(cx);
2913 return;
2914 }
2915
2916 let tab_size = cx.global::<Settings>().tab_size;
2917 let selections = self.local_selections::<Point>(cx);
2918 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2919 let mut deletion_ranges = Vec::new();
2920 let mut last_outdent = None;
2921 {
2922 let buffer = self.buffer.read(cx).read(cx);
2923 for selection in &selections {
2924 let mut rows = selection.spanned_rows(false, &display_map);
2925
2926 // Avoid re-outdenting a row that has already been outdented by a
2927 // previous selection.
2928 if let Some(last_row) = last_outdent {
2929 if last_row == rows.start {
2930 rows.start += 1;
2931 }
2932 }
2933
2934 for row in rows {
2935 let column = buffer.indent_column_for_line(row) as usize;
2936 if column > 0 {
2937 let mut deletion_len = (column % tab_size) as u32;
2938 if deletion_len == 0 {
2939 deletion_len = tab_size as u32;
2940 }
2941 deletion_ranges.push(Point::new(row, 0)..Point::new(row, deletion_len));
2942 last_outdent = Some(row);
2943 }
2944 }
2945 }
2946 }
2947
2948 self.transact(cx, |this, cx| {
2949 this.buffer.update(cx, |buffer, cx| {
2950 buffer.edit(deletion_ranges, "", cx);
2951 });
2952 this.update_selections(
2953 this.local_selections::<usize>(cx),
2954 Some(Autoscroll::Fit),
2955 cx,
2956 );
2957 });
2958 }
2959
2960 pub fn delete_line(&mut self, _: &DeleteLine, cx: &mut ViewContext<Self>) {
2961 let selections = self.local_selections::<Point>(cx);
2962 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2963 let buffer = self.buffer.read(cx).snapshot(cx);
2964
2965 let mut new_cursors = Vec::new();
2966 let mut edit_ranges = Vec::new();
2967 let mut selections = selections.iter().peekable();
2968 while let Some(selection) = selections.next() {
2969 let mut rows = selection.spanned_rows(false, &display_map);
2970 let goal_display_column = selection.head().to_display_point(&display_map).column();
2971
2972 // Accumulate contiguous regions of rows that we want to delete.
2973 while let Some(next_selection) = selections.peek() {
2974 let next_rows = next_selection.spanned_rows(false, &display_map);
2975 if next_rows.start <= rows.end {
2976 rows.end = next_rows.end;
2977 selections.next().unwrap();
2978 } else {
2979 break;
2980 }
2981 }
2982
2983 let mut edit_start = Point::new(rows.start, 0).to_offset(&buffer);
2984 let edit_end;
2985 let cursor_buffer_row;
2986 if buffer.max_point().row >= rows.end {
2987 // If there's a line after the range, delete the \n from the end of the row range
2988 // and position the cursor on the next line.
2989 edit_end = Point::new(rows.end, 0).to_offset(&buffer);
2990 cursor_buffer_row = rows.end;
2991 } else {
2992 // If there isn't a line after the range, delete the \n from the line before the
2993 // start of the row range and position the cursor there.
2994 edit_start = edit_start.saturating_sub(1);
2995 edit_end = buffer.len();
2996 cursor_buffer_row = rows.start.saturating_sub(1);
2997 }
2998
2999 let mut cursor = Point::new(cursor_buffer_row, 0).to_display_point(&display_map);
3000 *cursor.column_mut() =
3001 cmp::min(goal_display_column, display_map.line_len(cursor.row()));
3002
3003 new_cursors.push((
3004 selection.id,
3005 buffer.anchor_after(cursor.to_point(&display_map)),
3006 ));
3007 edit_ranges.push(edit_start..edit_end);
3008 }
3009
3010 self.transact(cx, |this, cx| {
3011 let buffer = this.buffer.update(cx, |buffer, cx| {
3012 buffer.edit(edit_ranges, "", cx);
3013 buffer.snapshot(cx)
3014 });
3015 let new_selections = new_cursors
3016 .into_iter()
3017 .map(|(id, cursor)| {
3018 let cursor = cursor.to_point(&buffer);
3019 Selection {
3020 id,
3021 start: cursor,
3022 end: cursor,
3023 reversed: false,
3024 goal: SelectionGoal::None,
3025 }
3026 })
3027 .collect();
3028 this.update_selections(new_selections, Some(Autoscroll::Fit), cx);
3029 });
3030 }
3031
3032 pub fn duplicate_line(&mut self, _: &DuplicateLine, cx: &mut ViewContext<Self>) {
3033 let selections = self.local_selections::<Point>(cx);
3034 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3035 let buffer = &display_map.buffer_snapshot;
3036
3037 let mut edits = Vec::new();
3038 let mut selections_iter = selections.iter().peekable();
3039 while let Some(selection) = selections_iter.next() {
3040 // Avoid duplicating the same lines twice.
3041 let mut rows = selection.spanned_rows(false, &display_map);
3042
3043 while let Some(next_selection) = selections_iter.peek() {
3044 let next_rows = next_selection.spanned_rows(false, &display_map);
3045 if next_rows.start <= rows.end - 1 {
3046 rows.end = next_rows.end;
3047 selections_iter.next().unwrap();
3048 } else {
3049 break;
3050 }
3051 }
3052
3053 // Copy the text from the selected row region and splice it at the start of the region.
3054 let start = Point::new(rows.start, 0);
3055 let end = Point::new(rows.end - 1, buffer.line_len(rows.end - 1));
3056 let text = buffer
3057 .text_for_range(start..end)
3058 .chain(Some("\n"))
3059 .collect::<String>();
3060 edits.push((start, text, rows.len() as u32));
3061 }
3062
3063 self.transact(cx, |this, cx| {
3064 this.buffer.update(cx, |buffer, cx| {
3065 for (point, text, _) in edits.into_iter().rev() {
3066 buffer.edit(Some(point..point), text, cx);
3067 }
3068 });
3069
3070 this.request_autoscroll(Autoscroll::Fit, cx);
3071 });
3072 }
3073
3074 pub fn move_line_up(&mut self, _: &MoveLineUp, cx: &mut ViewContext<Self>) {
3075 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3076 let buffer = self.buffer.read(cx).snapshot(cx);
3077
3078 let mut edits = Vec::new();
3079 let mut unfold_ranges = Vec::new();
3080 let mut refold_ranges = Vec::new();
3081
3082 let selections = self.local_selections::<Point>(cx);
3083 let mut selections = selections.iter().peekable();
3084 let mut contiguous_row_selections = Vec::new();
3085 let mut new_selections = Vec::new();
3086
3087 while let Some(selection) = selections.next() {
3088 // Find all the selections that span a contiguous row range
3089 contiguous_row_selections.push(selection.clone());
3090 let start_row = selection.start.row;
3091 let mut end_row = if selection.end.column > 0 || selection.is_empty() {
3092 display_map.next_line_boundary(selection.end).0.row + 1
3093 } else {
3094 selection.end.row
3095 };
3096
3097 while let Some(next_selection) = selections.peek() {
3098 if next_selection.start.row <= end_row {
3099 end_row = if next_selection.end.column > 0 || next_selection.is_empty() {
3100 display_map.next_line_boundary(next_selection.end).0.row + 1
3101 } else {
3102 next_selection.end.row
3103 };
3104 contiguous_row_selections.push(selections.next().unwrap().clone());
3105 } else {
3106 break;
3107 }
3108 }
3109
3110 // Move the text spanned by the row range to be before the line preceding the row range
3111 if start_row > 0 {
3112 let range_to_move = Point::new(start_row - 1, buffer.line_len(start_row - 1))
3113 ..Point::new(end_row - 1, buffer.line_len(end_row - 1));
3114 let insertion_point = display_map
3115 .prev_line_boundary(Point::new(start_row - 1, 0))
3116 .0;
3117
3118 // Don't move lines across excerpts
3119 if buffer
3120 .excerpt_boundaries_in_range((
3121 Bound::Excluded(insertion_point),
3122 Bound::Included(range_to_move.end),
3123 ))
3124 .next()
3125 .is_none()
3126 {
3127 let text = buffer
3128 .text_for_range(range_to_move.clone())
3129 .flat_map(|s| s.chars())
3130 .skip(1)
3131 .chain(['\n'])
3132 .collect::<String>();
3133
3134 edits.push((
3135 buffer.anchor_after(range_to_move.start)
3136 ..buffer.anchor_before(range_to_move.end),
3137 String::new(),
3138 ));
3139 let insertion_anchor = buffer.anchor_after(insertion_point);
3140 edits.push((insertion_anchor.clone()..insertion_anchor, text));
3141
3142 let row_delta = range_to_move.start.row - insertion_point.row + 1;
3143
3144 // Move selections up
3145 new_selections.extend(contiguous_row_selections.drain(..).map(
3146 |mut selection| {
3147 selection.start.row -= row_delta;
3148 selection.end.row -= row_delta;
3149 selection
3150 },
3151 ));
3152
3153 // Move folds up
3154 unfold_ranges.push(range_to_move.clone());
3155 for fold in display_map.folds_in_range(
3156 buffer.anchor_before(range_to_move.start)
3157 ..buffer.anchor_after(range_to_move.end),
3158 ) {
3159 let mut start = fold.start.to_point(&buffer);
3160 let mut end = fold.end.to_point(&buffer);
3161 start.row -= row_delta;
3162 end.row -= row_delta;
3163 refold_ranges.push(start..end);
3164 }
3165 }
3166 }
3167
3168 // If we didn't move line(s), preserve the existing selections
3169 new_selections.extend(contiguous_row_selections.drain(..));
3170 }
3171
3172 self.transact(cx, |this, cx| {
3173 this.unfold_ranges(unfold_ranges, true, cx);
3174 this.buffer.update(cx, |buffer, cx| {
3175 for (range, text) in edits {
3176 buffer.edit([range], text, cx);
3177 }
3178 });
3179 this.fold_ranges(refold_ranges, cx);
3180 this.update_selections(new_selections, Some(Autoscroll::Fit), cx);
3181 });
3182 }
3183
3184 pub fn move_line_down(&mut self, _: &MoveLineDown, cx: &mut ViewContext<Self>) {
3185 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3186 let buffer = self.buffer.read(cx).snapshot(cx);
3187
3188 let mut edits = Vec::new();
3189 let mut unfold_ranges = Vec::new();
3190 let mut refold_ranges = Vec::new();
3191
3192 let selections = self.local_selections::<Point>(cx);
3193 let mut selections = selections.iter().peekable();
3194 let mut contiguous_row_selections = Vec::new();
3195 let mut new_selections = Vec::new();
3196
3197 while let Some(selection) = selections.next() {
3198 // Find all the selections that span a contiguous row range
3199 contiguous_row_selections.push(selection.clone());
3200 let start_row = selection.start.row;
3201 let mut end_row = if selection.end.column > 0 || selection.is_empty() {
3202 display_map.next_line_boundary(selection.end).0.row + 1
3203 } else {
3204 selection.end.row
3205 };
3206
3207 while let Some(next_selection) = selections.peek() {
3208 if next_selection.start.row <= end_row {
3209 end_row = if next_selection.end.column > 0 || next_selection.is_empty() {
3210 display_map.next_line_boundary(next_selection.end).0.row + 1
3211 } else {
3212 next_selection.end.row
3213 };
3214 contiguous_row_selections.push(selections.next().unwrap().clone());
3215 } else {
3216 break;
3217 }
3218 }
3219
3220 // Move the text spanned by the row range to be after the last line of the row range
3221 if end_row <= buffer.max_point().row {
3222 let range_to_move = Point::new(start_row, 0)..Point::new(end_row, 0);
3223 let insertion_point = display_map.next_line_boundary(Point::new(end_row, 0)).0;
3224
3225 // Don't move lines across excerpt boundaries
3226 if buffer
3227 .excerpt_boundaries_in_range((
3228 Bound::Excluded(range_to_move.start),
3229 Bound::Included(insertion_point),
3230 ))
3231 .next()
3232 .is_none()
3233 {
3234 let mut text = String::from("\n");
3235 text.extend(buffer.text_for_range(range_to_move.clone()));
3236 text.pop(); // Drop trailing newline
3237 edits.push((
3238 buffer.anchor_after(range_to_move.start)
3239 ..buffer.anchor_before(range_to_move.end),
3240 String::new(),
3241 ));
3242 let insertion_anchor = buffer.anchor_after(insertion_point);
3243 edits.push((insertion_anchor.clone()..insertion_anchor, text));
3244
3245 let row_delta = insertion_point.row - range_to_move.end.row + 1;
3246
3247 // Move selections down
3248 new_selections.extend(contiguous_row_selections.drain(..).map(
3249 |mut selection| {
3250 selection.start.row += row_delta;
3251 selection.end.row += row_delta;
3252 selection
3253 },
3254 ));
3255
3256 // Move folds down
3257 unfold_ranges.push(range_to_move.clone());
3258 for fold in display_map.folds_in_range(
3259 buffer.anchor_before(range_to_move.start)
3260 ..buffer.anchor_after(range_to_move.end),
3261 ) {
3262 let mut start = fold.start.to_point(&buffer);
3263 let mut end = fold.end.to_point(&buffer);
3264 start.row += row_delta;
3265 end.row += row_delta;
3266 refold_ranges.push(start..end);
3267 }
3268 }
3269 }
3270
3271 // If we didn't move line(s), preserve the existing selections
3272 new_selections.extend(contiguous_row_selections.drain(..));
3273 }
3274
3275 self.transact(cx, |this, cx| {
3276 this.unfold_ranges(unfold_ranges, true, cx);
3277 this.buffer.update(cx, |buffer, cx| {
3278 for (range, text) in edits {
3279 buffer.edit([range], text, cx);
3280 }
3281 });
3282 this.fold_ranges(refold_ranges, cx);
3283 this.update_selections(new_selections, Some(Autoscroll::Fit), cx);
3284 });
3285 }
3286
3287 pub fn cut(&mut self, _: &Cut, cx: &mut ViewContext<Self>) {
3288 let mut text = String::new();
3289 let mut selections = self.local_selections::<Point>(cx);
3290 let mut clipboard_selections = Vec::with_capacity(selections.len());
3291 {
3292 let buffer = self.buffer.read(cx).read(cx);
3293 let max_point = buffer.max_point();
3294 for selection in &mut selections {
3295 let is_entire_line = selection.is_empty();
3296 if is_entire_line {
3297 selection.start = Point::new(selection.start.row, 0);
3298 selection.end = cmp::min(max_point, Point::new(selection.end.row + 1, 0));
3299 selection.goal = SelectionGoal::None;
3300 }
3301 let mut len = 0;
3302 for chunk in buffer.text_for_range(selection.start..selection.end) {
3303 text.push_str(chunk);
3304 len += chunk.len();
3305 }
3306 clipboard_selections.push(ClipboardSelection {
3307 len,
3308 is_entire_line,
3309 });
3310 }
3311 }
3312
3313 self.transact(cx, |this, cx| {
3314 this.update_selections(selections, Some(Autoscroll::Fit), cx);
3315 this.insert("", cx);
3316 cx.write_to_clipboard(ClipboardItem::new(text).with_metadata(clipboard_selections));
3317 });
3318 }
3319
3320 pub fn copy(&mut self, _: &Copy, cx: &mut ViewContext<Self>) {
3321 let selections = self.local_selections::<Point>(cx);
3322 let mut text = String::new();
3323 let mut clipboard_selections = Vec::with_capacity(selections.len());
3324 {
3325 let buffer = self.buffer.read(cx).read(cx);
3326 let max_point = buffer.max_point();
3327 for selection in selections.iter() {
3328 let mut start = selection.start;
3329 let mut end = selection.end;
3330 let is_entire_line = selection.is_empty();
3331 if is_entire_line {
3332 start = Point::new(start.row, 0);
3333 end = cmp::min(max_point, Point::new(start.row + 1, 0));
3334 }
3335 let mut len = 0;
3336 for chunk in buffer.text_for_range(start..end) {
3337 text.push_str(chunk);
3338 len += chunk.len();
3339 }
3340 clipboard_selections.push(ClipboardSelection {
3341 len,
3342 is_entire_line,
3343 });
3344 }
3345 }
3346
3347 cx.write_to_clipboard(ClipboardItem::new(text).with_metadata(clipboard_selections));
3348 }
3349
3350 pub fn paste(&mut self, _: &Paste, cx: &mut ViewContext<Self>) {
3351 self.transact(cx, |this, cx| {
3352 if let Some(item) = cx.as_mut().read_from_clipboard() {
3353 let clipboard_text = item.text();
3354 if let Some(mut clipboard_selections) = item.metadata::<Vec<ClipboardSelection>>() {
3355 let mut selections = this.local_selections::<usize>(cx);
3356 let all_selections_were_entire_line =
3357 clipboard_selections.iter().all(|s| s.is_entire_line);
3358 if clipboard_selections.len() != selections.len() {
3359 clipboard_selections.clear();
3360 }
3361
3362 let mut delta = 0_isize;
3363 let mut start_offset = 0;
3364 for (i, selection) in selections.iter_mut().enumerate() {
3365 let to_insert;
3366 let entire_line;
3367 if let Some(clipboard_selection) = clipboard_selections.get(i) {
3368 let end_offset = start_offset + clipboard_selection.len;
3369 to_insert = &clipboard_text[start_offset..end_offset];
3370 entire_line = clipboard_selection.is_entire_line;
3371 start_offset = end_offset
3372 } else {
3373 to_insert = clipboard_text.as_str();
3374 entire_line = all_selections_were_entire_line;
3375 }
3376
3377 selection.start = (selection.start as isize + delta) as usize;
3378 selection.end = (selection.end as isize + delta) as usize;
3379
3380 this.buffer.update(cx, |buffer, cx| {
3381 // If the corresponding selection was empty when this slice of the
3382 // clipboard text was written, then the entire line containing the
3383 // selection was copied. If this selection is also currently empty,
3384 // then paste the line before the current line of the buffer.
3385 let range = if selection.is_empty() && entire_line {
3386 let column =
3387 selection.start.to_point(&buffer.read(cx)).column as usize;
3388 let line_start = selection.start - column;
3389 line_start..line_start
3390 } else {
3391 selection.start..selection.end
3392 };
3393
3394 delta += to_insert.len() as isize - range.len() as isize;
3395 buffer.edit([range], to_insert, cx);
3396 selection.start += to_insert.len();
3397 selection.end = selection.start;
3398 });
3399 }
3400 this.update_selections(selections, Some(Autoscroll::Fit), cx);
3401 } else {
3402 this.insert(clipboard_text, cx);
3403 }
3404 }
3405 });
3406 }
3407
3408 pub fn undo(&mut self, _: &Undo, cx: &mut ViewContext<Self>) {
3409 if let Some(tx_id) = self.buffer.update(cx, |buffer, cx| buffer.undo(cx)) {
3410 if let Some((selections, _)) = self.selection_history.get(&tx_id).cloned() {
3411 self.set_selections(selections, None, true, cx);
3412 }
3413 self.request_autoscroll(Autoscroll::Fit, cx);
3414 cx.emit(Event::Edited);
3415 }
3416 }
3417
3418 pub fn redo(&mut self, _: &Redo, cx: &mut ViewContext<Self>) {
3419 if let Some(tx_id) = self.buffer.update(cx, |buffer, cx| buffer.redo(cx)) {
3420 if let Some((_, Some(selections))) = self.selection_history.get(&tx_id).cloned() {
3421 self.set_selections(selections, None, true, cx);
3422 }
3423 self.request_autoscroll(Autoscroll::Fit, cx);
3424 cx.emit(Event::Edited);
3425 }
3426 }
3427
3428 pub fn finalize_last_transaction(&mut self, cx: &mut ViewContext<Self>) {
3429 self.buffer
3430 .update(cx, |buffer, cx| buffer.finalize_last_transaction(cx));
3431 }
3432
3433 pub fn move_left(&mut self, _: &MoveLeft, cx: &mut ViewContext<Self>) {
3434 self.move_selections(cx, |map, selection| {
3435 let cursor = if selection.is_empty() {
3436 movement::left(map, selection.start)
3437 } else {
3438 selection.start
3439 };
3440 selection.collapse_to(cursor, SelectionGoal::None);
3441 });
3442 }
3443
3444 pub fn select_left(&mut self, _: &SelectLeft, cx: &mut ViewContext<Self>) {
3445 self.move_selection_heads(cx, |map, head, _| {
3446 (movement::left(map, head), SelectionGoal::None)
3447 });
3448 }
3449
3450 pub fn move_right(&mut self, _: &MoveRight, cx: &mut ViewContext<Self>) {
3451 self.move_selections(cx, |map, selection| {
3452 let cursor = if selection.is_empty() {
3453 movement::right(map, selection.end)
3454 } else {
3455 selection.end
3456 };
3457 selection.collapse_to(cursor, SelectionGoal::None)
3458 });
3459 }
3460
3461 pub fn select_right(&mut self, _: &SelectRight, cx: &mut ViewContext<Self>) {
3462 self.move_selection_heads(cx, |map, head, _| {
3463 (movement::right(map, head), SelectionGoal::None)
3464 });
3465 }
3466
3467 pub fn move_up(&mut self, _: &MoveUp, cx: &mut ViewContext<Self>) {
3468 if self.take_rename(true, cx).is_some() {
3469 return;
3470 }
3471
3472 if let Some(context_menu) = self.context_menu.as_mut() {
3473 if context_menu.select_prev(cx) {
3474 return;
3475 }
3476 }
3477
3478 if matches!(self.mode, EditorMode::SingleLine) {
3479 cx.propagate_action();
3480 return;
3481 }
3482
3483 self.move_selections(cx, |map, selection| {
3484 if !selection.is_empty() {
3485 selection.goal = SelectionGoal::None;
3486 }
3487 let (cursor, goal) = movement::up(&map, selection.start, selection.goal);
3488 selection.collapse_to(cursor, goal);
3489 });
3490 }
3491
3492 pub fn select_up(&mut self, _: &SelectUp, cx: &mut ViewContext<Self>) {
3493 self.move_selection_heads(cx, movement::up)
3494 }
3495
3496 pub fn move_down(&mut self, _: &MoveDown, cx: &mut ViewContext<Self>) {
3497 self.take_rename(true, cx);
3498
3499 if let Some(context_menu) = self.context_menu.as_mut() {
3500 if context_menu.select_next(cx) {
3501 return;
3502 }
3503 }
3504
3505 if matches!(self.mode, EditorMode::SingleLine) {
3506 cx.propagate_action();
3507 return;
3508 }
3509
3510 self.move_selections(cx, |map, selection| {
3511 if !selection.is_empty() {
3512 selection.goal = SelectionGoal::None;
3513 }
3514 let (cursor, goal) = movement::down(&map, selection.end, selection.goal);
3515 selection.collapse_to(cursor, goal);
3516 });
3517 }
3518
3519 pub fn select_down(&mut self, _: &SelectDown, cx: &mut ViewContext<Self>) {
3520 self.move_selection_heads(cx, movement::down)
3521 }
3522
3523 pub fn move_to_previous_word_start(
3524 &mut self,
3525 _: &MoveToPreviousWordStart,
3526 cx: &mut ViewContext<Self>,
3527 ) {
3528 self.move_cursors(cx, |map, head, _| {
3529 (
3530 movement::previous_word_start(map, head),
3531 SelectionGoal::None,
3532 )
3533 });
3534 }
3535
3536 pub fn move_to_previous_subword_start(
3537 &mut self,
3538 _: &MoveToPreviousSubwordStart,
3539 cx: &mut ViewContext<Self>,
3540 ) {
3541 self.move_cursors(cx, |map, head, _| {
3542 (
3543 movement::previous_subword_start(map, head),
3544 SelectionGoal::None,
3545 )
3546 });
3547 }
3548
3549 pub fn select_to_previous_word_start(
3550 &mut self,
3551 _: &SelectToPreviousWordStart,
3552 cx: &mut ViewContext<Self>,
3553 ) {
3554 self.move_selection_heads(cx, |map, head, _| {
3555 (
3556 movement::previous_word_start(map, head),
3557 SelectionGoal::None,
3558 )
3559 });
3560 }
3561
3562 pub fn select_to_previous_subword_start(
3563 &mut self,
3564 _: &SelectToPreviousSubwordStart,
3565 cx: &mut ViewContext<Self>,
3566 ) {
3567 self.move_selection_heads(cx, |map, head, _| {
3568 (
3569 movement::previous_subword_start(map, head),
3570 SelectionGoal::None,
3571 )
3572 });
3573 }
3574
3575 pub fn delete_to_previous_word_start(
3576 &mut self,
3577 _: &DeleteToPreviousWordStart,
3578 cx: &mut ViewContext<Self>,
3579 ) {
3580 self.transact(cx, |this, cx| {
3581 this.move_selections(cx, |map, selection| {
3582 if selection.is_empty() {
3583 let cursor = movement::previous_word_start(map, selection.head());
3584 selection.set_head(cursor, SelectionGoal::None);
3585 }
3586 });
3587 this.insert("", cx);
3588 });
3589 }
3590
3591 pub fn delete_to_previous_subword_start(
3592 &mut self,
3593 _: &DeleteToPreviousSubwordStart,
3594 cx: &mut ViewContext<Self>,
3595 ) {
3596 self.transact(cx, |this, cx| {
3597 this.move_selections(cx, |map, selection| {
3598 if selection.is_empty() {
3599 let cursor = movement::previous_subword_start(map, selection.head());
3600 selection.set_head(cursor, SelectionGoal::None);
3601 }
3602 });
3603 this.insert("", cx);
3604 });
3605 }
3606
3607 pub fn move_to_next_word_end(&mut self, _: &MoveToNextWordEnd, cx: &mut ViewContext<Self>) {
3608 self.move_cursors(cx, |map, head, _| {
3609 (movement::next_word_end(map, head), SelectionGoal::None)
3610 });
3611 }
3612
3613 pub fn move_to_next_subword_end(
3614 &mut self,
3615 _: &MoveToNextSubwordEnd,
3616 cx: &mut ViewContext<Self>,
3617 ) {
3618 self.move_cursors(cx, |map, head, _| {
3619 (movement::next_subword_end(map, head), SelectionGoal::None)
3620 });
3621 }
3622
3623 pub fn select_to_next_word_end(&mut self, _: &SelectToNextWordEnd, cx: &mut ViewContext<Self>) {
3624 self.move_selection_heads(cx, |map, head, _| {
3625 (movement::next_word_end(map, head), SelectionGoal::None)
3626 });
3627 }
3628
3629 pub fn select_to_next_subword_end(
3630 &mut self,
3631 _: &SelectToNextSubwordEnd,
3632 cx: &mut ViewContext<Self>,
3633 ) {
3634 self.move_selection_heads(cx, |map, head, _| {
3635 (movement::next_subword_end(map, head), SelectionGoal::None)
3636 });
3637 }
3638
3639 pub fn delete_to_next_word_end(&mut self, _: &DeleteToNextWordEnd, cx: &mut ViewContext<Self>) {
3640 self.transact(cx, |this, cx| {
3641 this.move_selections(cx, |map, selection| {
3642 if selection.is_empty() {
3643 let cursor = movement::next_word_end(map, selection.head());
3644 selection.set_head(cursor, SelectionGoal::None);
3645 }
3646 });
3647 this.insert("", cx);
3648 });
3649 }
3650
3651 pub fn delete_to_next_subword_end(
3652 &mut self,
3653 _: &DeleteToNextSubwordEnd,
3654 cx: &mut ViewContext<Self>,
3655 ) {
3656 self.transact(cx, |this, cx| {
3657 this.move_selections(cx, |map, selection| {
3658 if selection.is_empty() {
3659 let cursor = movement::next_subword_end(map, selection.head());
3660 selection.set_head(cursor, SelectionGoal::None);
3661 }
3662 });
3663 this.insert("", cx);
3664 });
3665 }
3666
3667 pub fn move_to_beginning_of_line(
3668 &mut self,
3669 _: &MoveToBeginningOfLine,
3670 cx: &mut ViewContext<Self>,
3671 ) {
3672 self.move_cursors(cx, |map, head, _| {
3673 (
3674 movement::line_beginning(map, head, true),
3675 SelectionGoal::None,
3676 )
3677 });
3678 }
3679
3680 pub fn select_to_beginning_of_line(
3681 &mut self,
3682 SelectToBeginningOfLine(stop_at_soft_boundaries): &SelectToBeginningOfLine,
3683 cx: &mut ViewContext<Self>,
3684 ) {
3685 self.move_selection_heads(cx, |map, head, _| {
3686 (
3687 movement::line_beginning(map, head, *stop_at_soft_boundaries),
3688 SelectionGoal::None,
3689 )
3690 });
3691 }
3692
3693 pub fn delete_to_beginning_of_line(
3694 &mut self,
3695 _: &DeleteToBeginningOfLine,
3696 cx: &mut ViewContext<Self>,
3697 ) {
3698 self.transact(cx, |this, cx| {
3699 this.select_to_beginning_of_line(&SelectToBeginningOfLine(false), cx);
3700 this.backspace(&Backspace, cx);
3701 });
3702 }
3703
3704 pub fn move_to_end_of_line(&mut self, _: &MoveToEndOfLine, cx: &mut ViewContext<Self>) {
3705 self.move_cursors(cx, |map, head, _| {
3706 (movement::line_end(map, head, true), SelectionGoal::None)
3707 });
3708 }
3709
3710 pub fn select_to_end_of_line(
3711 &mut self,
3712 SelectToEndOfLine(stop_at_soft_boundaries): &SelectToEndOfLine,
3713 cx: &mut ViewContext<Self>,
3714 ) {
3715 self.move_selection_heads(cx, |map, head, _| {
3716 (
3717 movement::line_end(map, head, *stop_at_soft_boundaries),
3718 SelectionGoal::None,
3719 )
3720 });
3721 }
3722
3723 pub fn delete_to_end_of_line(&mut self, _: &DeleteToEndOfLine, cx: &mut ViewContext<Self>) {
3724 self.transact(cx, |this, cx| {
3725 this.select_to_end_of_line(&SelectToEndOfLine(false), cx);
3726 this.delete(&Delete, cx);
3727 });
3728 }
3729
3730 pub fn cut_to_end_of_line(&mut self, _: &CutToEndOfLine, cx: &mut ViewContext<Self>) {
3731 self.transact(cx, |this, cx| {
3732 this.select_to_end_of_line(&SelectToEndOfLine(false), cx);
3733 this.cut(&Cut, cx);
3734 });
3735 }
3736
3737 pub fn move_to_beginning(&mut self, _: &MoveToBeginning, cx: &mut ViewContext<Self>) {
3738 if matches!(self.mode, EditorMode::SingleLine) {
3739 cx.propagate_action();
3740 return;
3741 }
3742
3743 let selection = Selection {
3744 id: post_inc(&mut self.next_selection_id),
3745 start: 0,
3746 end: 0,
3747 reversed: false,
3748 goal: SelectionGoal::None,
3749 };
3750 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
3751 }
3752
3753 pub fn select_to_beginning(&mut self, _: &SelectToBeginning, cx: &mut ViewContext<Self>) {
3754 let mut selection = self.local_selections::<Point>(cx).last().unwrap().clone();
3755 selection.set_head(Point::zero(), SelectionGoal::None);
3756 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
3757 }
3758
3759 pub fn move_to_end(&mut self, _: &MoveToEnd, cx: &mut ViewContext<Self>) {
3760 if matches!(self.mode, EditorMode::SingleLine) {
3761 cx.propagate_action();
3762 return;
3763 }
3764
3765 let cursor = self.buffer.read(cx).read(cx).len();
3766 let selection = Selection {
3767 id: post_inc(&mut self.next_selection_id),
3768 start: cursor,
3769 end: cursor,
3770 reversed: false,
3771 goal: SelectionGoal::None,
3772 };
3773 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
3774 }
3775
3776 pub fn set_nav_history(&mut self, nav_history: Option<ItemNavHistory>) {
3777 self.nav_history = nav_history;
3778 }
3779
3780 pub fn nav_history(&self) -> Option<&ItemNavHistory> {
3781 self.nav_history.as_ref()
3782 }
3783
3784 fn push_to_nav_history(
3785 &self,
3786 position: Anchor,
3787 new_position: Option<Point>,
3788 cx: &mut ViewContext<Self>,
3789 ) {
3790 if let Some(nav_history) = &self.nav_history {
3791 let buffer = self.buffer.read(cx).read(cx);
3792 let offset = position.to_offset(&buffer);
3793 let point = position.to_point(&buffer);
3794 drop(buffer);
3795
3796 if let Some(new_position) = new_position {
3797 let row_delta = (new_position.row as i64 - point.row as i64).abs();
3798 if row_delta < MIN_NAVIGATION_HISTORY_ROW_DELTA {
3799 return;
3800 }
3801 }
3802
3803 nav_history.push(Some(NavigationData {
3804 anchor: position,
3805 offset,
3806 }));
3807 }
3808 }
3809
3810 pub fn select_to_end(&mut self, _: &SelectToEnd, cx: &mut ViewContext<Self>) {
3811 let mut selection = self.local_selections::<usize>(cx).first().unwrap().clone();
3812 selection.set_head(self.buffer.read(cx).read(cx).len(), SelectionGoal::None);
3813 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
3814 }
3815
3816 pub fn select_all(&mut self, _: &SelectAll, cx: &mut ViewContext<Self>) {
3817 let selection = Selection {
3818 id: post_inc(&mut self.next_selection_id),
3819 start: 0,
3820 end: self.buffer.read(cx).read(cx).len(),
3821 reversed: false,
3822 goal: SelectionGoal::None,
3823 };
3824 self.update_selections(vec![selection], None, cx);
3825 }
3826
3827 pub fn select_line(&mut self, _: &SelectLine, cx: &mut ViewContext<Self>) {
3828 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3829 let mut selections = self.local_selections::<Point>(cx);
3830 let max_point = display_map.buffer_snapshot.max_point();
3831 for selection in &mut selections {
3832 let rows = selection.spanned_rows(true, &display_map);
3833 selection.start = Point::new(rows.start, 0);
3834 selection.end = cmp::min(max_point, Point::new(rows.end, 0));
3835 selection.reversed = false;
3836 }
3837 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3838 }
3839
3840 pub fn split_selection_into_lines(
3841 &mut self,
3842 _: &SplitSelectionIntoLines,
3843 cx: &mut ViewContext<Self>,
3844 ) {
3845 let mut to_unfold = Vec::new();
3846 let mut new_selections = Vec::new();
3847 {
3848 let selections = self.local_selections::<Point>(cx);
3849 let buffer = self.buffer.read(cx).read(cx);
3850 for selection in selections {
3851 for row in selection.start.row..selection.end.row {
3852 let cursor = Point::new(row, buffer.line_len(row));
3853 new_selections.push(Selection {
3854 id: post_inc(&mut self.next_selection_id),
3855 start: cursor,
3856 end: cursor,
3857 reversed: false,
3858 goal: SelectionGoal::None,
3859 });
3860 }
3861 new_selections.push(Selection {
3862 id: selection.id,
3863 start: selection.end,
3864 end: selection.end,
3865 reversed: false,
3866 goal: SelectionGoal::None,
3867 });
3868 to_unfold.push(selection.start..selection.end);
3869 }
3870 }
3871 self.unfold_ranges(to_unfold, true, cx);
3872 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
3873 }
3874
3875 pub fn add_selection_above(&mut self, _: &AddSelectionAbove, cx: &mut ViewContext<Self>) {
3876 self.add_selection(true, cx);
3877 }
3878
3879 pub fn add_selection_below(&mut self, _: &AddSelectionBelow, cx: &mut ViewContext<Self>) {
3880 self.add_selection(false, cx);
3881 }
3882
3883 fn add_selection(&mut self, above: bool, cx: &mut ViewContext<Self>) {
3884 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3885 let mut selections = self.local_selections::<Point>(cx);
3886 let mut state = self.add_selections_state.take().unwrap_or_else(|| {
3887 let oldest_selection = selections.iter().min_by_key(|s| s.id).unwrap().clone();
3888 let range = oldest_selection.display_range(&display_map).sorted();
3889 let columns = cmp::min(range.start.column(), range.end.column())
3890 ..cmp::max(range.start.column(), range.end.column());
3891
3892 selections.clear();
3893 let mut stack = Vec::new();
3894 for row in range.start.row()..=range.end.row() {
3895 if let Some(selection) = self.build_columnar_selection(
3896 &display_map,
3897 row,
3898 &columns,
3899 oldest_selection.reversed,
3900 ) {
3901 stack.push(selection.id);
3902 selections.push(selection);
3903 }
3904 }
3905
3906 if above {
3907 stack.reverse();
3908 }
3909
3910 AddSelectionsState { above, stack }
3911 });
3912
3913 let last_added_selection = *state.stack.last().unwrap();
3914 let mut new_selections = Vec::new();
3915 if above == state.above {
3916 let end_row = if above {
3917 0
3918 } else {
3919 display_map.max_point().row()
3920 };
3921
3922 'outer: for selection in selections {
3923 if selection.id == last_added_selection {
3924 let range = selection.display_range(&display_map).sorted();
3925 debug_assert_eq!(range.start.row(), range.end.row());
3926 let mut row = range.start.row();
3927 let columns = if let SelectionGoal::ColumnRange { start, end } = selection.goal
3928 {
3929 start..end
3930 } else {
3931 cmp::min(range.start.column(), range.end.column())
3932 ..cmp::max(range.start.column(), range.end.column())
3933 };
3934
3935 while row != end_row {
3936 if above {
3937 row -= 1;
3938 } else {
3939 row += 1;
3940 }
3941
3942 if let Some(new_selection) = self.build_columnar_selection(
3943 &display_map,
3944 row,
3945 &columns,
3946 selection.reversed,
3947 ) {
3948 state.stack.push(new_selection.id);
3949 if above {
3950 new_selections.push(new_selection);
3951 new_selections.push(selection);
3952 } else {
3953 new_selections.push(selection);
3954 new_selections.push(new_selection);
3955 }
3956
3957 continue 'outer;
3958 }
3959 }
3960 }
3961
3962 new_selections.push(selection);
3963 }
3964 } else {
3965 new_selections = selections;
3966 new_selections.retain(|s| s.id != last_added_selection);
3967 state.stack.pop();
3968 }
3969
3970 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
3971 if state.stack.len() > 1 {
3972 self.add_selections_state = Some(state);
3973 }
3974 }
3975
3976 pub fn select_next(&mut self, action: &SelectNext, cx: &mut ViewContext<Self>) {
3977 let replace_newest = action.0;
3978 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3979 let buffer = &display_map.buffer_snapshot;
3980 let mut selections = self.local_selections::<usize>(cx);
3981 if let Some(mut select_next_state) = self.select_next_state.take() {
3982 let query = &select_next_state.query;
3983 if !select_next_state.done {
3984 let first_selection = selections.iter().min_by_key(|s| s.id).unwrap();
3985 let last_selection = selections.iter().max_by_key(|s| s.id).unwrap();
3986 let mut next_selected_range = None;
3987
3988 let bytes_after_last_selection =
3989 buffer.bytes_in_range(last_selection.end..buffer.len());
3990 let bytes_before_first_selection = buffer.bytes_in_range(0..first_selection.start);
3991 let query_matches = query
3992 .stream_find_iter(bytes_after_last_selection)
3993 .map(|result| (last_selection.end, result))
3994 .chain(
3995 query
3996 .stream_find_iter(bytes_before_first_selection)
3997 .map(|result| (0, result)),
3998 );
3999 for (start_offset, query_match) in query_matches {
4000 let query_match = query_match.unwrap(); // can only fail due to I/O
4001 let offset_range =
4002 start_offset + query_match.start()..start_offset + query_match.end();
4003 let display_range = offset_range.start.to_display_point(&display_map)
4004 ..offset_range.end.to_display_point(&display_map);
4005
4006 if !select_next_state.wordwise
4007 || (!movement::is_inside_word(&display_map, display_range.start)
4008 && !movement::is_inside_word(&display_map, display_range.end))
4009 {
4010 next_selected_range = Some(offset_range);
4011 break;
4012 }
4013 }
4014
4015 if let Some(next_selected_range) = next_selected_range {
4016 if replace_newest {
4017 if let Some(newest_id) =
4018 selections.iter().max_by_key(|s| s.id).map(|s| s.id)
4019 {
4020 selections.retain(|s| s.id != newest_id);
4021 }
4022 }
4023 selections.push(Selection {
4024 id: post_inc(&mut self.next_selection_id),
4025 start: next_selected_range.start,
4026 end: next_selected_range.end,
4027 reversed: false,
4028 goal: SelectionGoal::None,
4029 });
4030 self.unfold_ranges([next_selected_range], false, cx);
4031 self.update_selections(selections, Some(Autoscroll::Newest), cx);
4032 } else {
4033 select_next_state.done = true;
4034 }
4035 }
4036
4037 self.select_next_state = Some(select_next_state);
4038 } else if selections.len() == 1 {
4039 let selection = selections.last_mut().unwrap();
4040 if selection.start == selection.end {
4041 let word_range = movement::surrounding_word(
4042 &display_map,
4043 selection.start.to_display_point(&display_map),
4044 );
4045 selection.start = word_range.start.to_offset(&display_map, Bias::Left);
4046 selection.end = word_range.end.to_offset(&display_map, Bias::Left);
4047 selection.goal = SelectionGoal::None;
4048 selection.reversed = false;
4049
4050 let query = buffer
4051 .text_for_range(selection.start..selection.end)
4052 .collect::<String>();
4053 let select_state = SelectNextState {
4054 query: AhoCorasick::new_auto_configured(&[query]),
4055 wordwise: true,
4056 done: false,
4057 };
4058 self.unfold_ranges([selection.start..selection.end], false, cx);
4059 self.update_selections(selections, Some(Autoscroll::Newest), cx);
4060 self.select_next_state = Some(select_state);
4061 } else {
4062 let query = buffer
4063 .text_for_range(selection.start..selection.end)
4064 .collect::<String>();
4065 self.select_next_state = Some(SelectNextState {
4066 query: AhoCorasick::new_auto_configured(&[query]),
4067 wordwise: false,
4068 done: false,
4069 });
4070 self.select_next(action, cx);
4071 }
4072 }
4073 }
4074
4075 pub fn toggle_comments(&mut self, _: &ToggleComments, cx: &mut ViewContext<Self>) {
4076 // Get the line comment prefix. Split its trailing whitespace into a separate string,
4077 // as that portion won't be used for detecting if a line is a comment.
4078 let full_comment_prefix =
4079 if let Some(prefix) = self.language(cx).and_then(|l| l.line_comment_prefix()) {
4080 prefix.to_string()
4081 } else {
4082 return;
4083 };
4084 let comment_prefix = full_comment_prefix.trim_end_matches(' ');
4085 let comment_prefix_whitespace = &full_comment_prefix[comment_prefix.len()..];
4086
4087 self.transact(cx, |this, cx| {
4088 let mut selections = this.local_selections::<Point>(cx);
4089 let mut all_selection_lines_are_comments = true;
4090 let mut edit_ranges = Vec::new();
4091 let mut last_toggled_row = None;
4092 this.buffer.update(cx, |buffer, cx| {
4093 for selection in &mut selections {
4094 edit_ranges.clear();
4095 let snapshot = buffer.snapshot(cx);
4096
4097 let end_row =
4098 if selection.end.row > selection.start.row && selection.end.column == 0 {
4099 selection.end.row
4100 } else {
4101 selection.end.row + 1
4102 };
4103
4104 for row in selection.start.row..end_row {
4105 // If multiple selections contain a given row, avoid processing that
4106 // row more than once.
4107 if last_toggled_row == Some(row) {
4108 continue;
4109 } else {
4110 last_toggled_row = Some(row);
4111 }
4112
4113 if snapshot.is_line_blank(row) {
4114 continue;
4115 }
4116
4117 let start = Point::new(row, snapshot.indent_column_for_line(row));
4118 let mut line_bytes = snapshot
4119 .bytes_in_range(start..snapshot.max_point())
4120 .flatten()
4121 .copied();
4122
4123 // If this line currently begins with the line comment prefix, then record
4124 // the range containing the prefix.
4125 if all_selection_lines_are_comments
4126 && line_bytes
4127 .by_ref()
4128 .take(comment_prefix.len())
4129 .eq(comment_prefix.bytes())
4130 {
4131 // Include any whitespace that matches the comment prefix.
4132 let matching_whitespace_len = line_bytes
4133 .zip(comment_prefix_whitespace.bytes())
4134 .take_while(|(a, b)| a == b)
4135 .count()
4136 as u32;
4137 let end = Point::new(
4138 row,
4139 start.column
4140 + comment_prefix.len() as u32
4141 + matching_whitespace_len,
4142 );
4143 edit_ranges.push(start..end);
4144 }
4145 // If this line does not begin with the line comment prefix, then record
4146 // the position where the prefix should be inserted.
4147 else {
4148 all_selection_lines_are_comments = false;
4149 edit_ranges.push(start..start);
4150 }
4151 }
4152
4153 if !edit_ranges.is_empty() {
4154 if all_selection_lines_are_comments {
4155 buffer.edit(edit_ranges.iter().cloned(), "", cx);
4156 } else {
4157 let min_column =
4158 edit_ranges.iter().map(|r| r.start.column).min().unwrap();
4159 let edit_ranges = edit_ranges.iter().map(|range| {
4160 let position = Point::new(range.start.row, min_column);
4161 position..position
4162 });
4163 buffer.edit(edit_ranges, &full_comment_prefix, cx);
4164 }
4165 }
4166 }
4167 });
4168
4169 this.update_selections(
4170 this.local_selections::<usize>(cx),
4171 Some(Autoscroll::Fit),
4172 cx,
4173 );
4174 });
4175 }
4176
4177 pub fn select_larger_syntax_node(
4178 &mut self,
4179 _: &SelectLargerSyntaxNode,
4180 cx: &mut ViewContext<Self>,
4181 ) {
4182 let old_selections = self.local_selections::<usize>(cx).into_boxed_slice();
4183 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
4184 let buffer = self.buffer.read(cx).snapshot(cx);
4185
4186 let mut stack = mem::take(&mut self.select_larger_syntax_node_stack);
4187 let mut selected_larger_node = false;
4188 let new_selections = old_selections
4189 .iter()
4190 .map(|selection| {
4191 let old_range = selection.start..selection.end;
4192 let mut new_range = old_range.clone();
4193 while let Some(containing_range) =
4194 buffer.range_for_syntax_ancestor(new_range.clone())
4195 {
4196 new_range = containing_range;
4197 if !display_map.intersects_fold(new_range.start)
4198 && !display_map.intersects_fold(new_range.end)
4199 {
4200 break;
4201 }
4202 }
4203
4204 selected_larger_node |= new_range != old_range;
4205 Selection {
4206 id: selection.id,
4207 start: new_range.start,
4208 end: new_range.end,
4209 goal: SelectionGoal::None,
4210 reversed: selection.reversed,
4211 }
4212 })
4213 .collect::<Vec<_>>();
4214
4215 if selected_larger_node {
4216 stack.push(old_selections);
4217 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
4218 }
4219 self.select_larger_syntax_node_stack = stack;
4220 }
4221
4222 pub fn select_smaller_syntax_node(
4223 &mut self,
4224 _: &SelectSmallerSyntaxNode,
4225 cx: &mut ViewContext<Self>,
4226 ) {
4227 let mut stack = mem::take(&mut self.select_larger_syntax_node_stack);
4228 if let Some(selections) = stack.pop() {
4229 self.update_selections(selections.to_vec(), Some(Autoscroll::Fit), cx);
4230 }
4231 self.select_larger_syntax_node_stack = stack;
4232 }
4233
4234 pub fn move_to_enclosing_bracket(
4235 &mut self,
4236 _: &MoveToEnclosingBracket,
4237 cx: &mut ViewContext<Self>,
4238 ) {
4239 let mut selections = self.local_selections::<usize>(cx);
4240 let buffer = self.buffer.read(cx).snapshot(cx);
4241 for selection in &mut selections {
4242 if let Some((open_range, close_range)) =
4243 buffer.enclosing_bracket_ranges(selection.start..selection.end)
4244 {
4245 let close_range = close_range.to_inclusive();
4246 let destination = if close_range.contains(&selection.start)
4247 && close_range.contains(&selection.end)
4248 {
4249 open_range.end
4250 } else {
4251 *close_range.start()
4252 };
4253 selection.start = destination;
4254 selection.end = destination;
4255 }
4256 }
4257
4258 self.update_selections(selections, Some(Autoscroll::Fit), cx);
4259 }
4260
4261 pub fn go_to_diagnostic(
4262 &mut self,
4263 &GoToDiagnostic(direction): &GoToDiagnostic,
4264 cx: &mut ViewContext<Self>,
4265 ) {
4266 let buffer = self.buffer.read(cx).snapshot(cx);
4267 let selection = self.newest_selection_with_snapshot::<usize>(&buffer);
4268 let mut active_primary_range = self.active_diagnostics.as_ref().map(|active_diagnostics| {
4269 active_diagnostics
4270 .primary_range
4271 .to_offset(&buffer)
4272 .to_inclusive()
4273 });
4274 let mut search_start = if let Some(active_primary_range) = active_primary_range.as_ref() {
4275 if active_primary_range.contains(&selection.head()) {
4276 *active_primary_range.end()
4277 } else {
4278 selection.head()
4279 }
4280 } else {
4281 selection.head()
4282 };
4283
4284 loop {
4285 let mut diagnostics = if direction == Direction::Prev {
4286 buffer.diagnostics_in_range::<_, usize>(0..search_start, true)
4287 } else {
4288 buffer.diagnostics_in_range::<_, usize>(search_start..buffer.len(), false)
4289 };
4290 let group = diagnostics.find_map(|entry| {
4291 if entry.diagnostic.is_primary
4292 && entry.diagnostic.severity <= DiagnosticSeverity::WARNING
4293 && !entry.range.is_empty()
4294 && Some(entry.range.end) != active_primary_range.as_ref().map(|r| *r.end())
4295 {
4296 Some((entry.range, entry.diagnostic.group_id))
4297 } else {
4298 None
4299 }
4300 });
4301
4302 if let Some((primary_range, group_id)) = group {
4303 self.activate_diagnostics(group_id, cx);
4304 self.update_selections(
4305 vec![Selection {
4306 id: selection.id,
4307 start: primary_range.start,
4308 end: primary_range.start,
4309 reversed: false,
4310 goal: SelectionGoal::None,
4311 }],
4312 Some(Autoscroll::Center),
4313 cx,
4314 );
4315 break;
4316 } else {
4317 // Cycle around to the start of the buffer, potentially moving back to the start of
4318 // the currently active diagnostic.
4319 active_primary_range.take();
4320 if direction == Direction::Prev {
4321 if search_start == buffer.len() {
4322 break;
4323 } else {
4324 search_start = buffer.len();
4325 }
4326 } else {
4327 if search_start == 0 {
4328 break;
4329 } else {
4330 search_start = 0;
4331 }
4332 }
4333 }
4334 }
4335 }
4336
4337 pub fn go_to_definition(
4338 workspace: &mut Workspace,
4339 _: &GoToDefinition,
4340 cx: &mut ViewContext<Workspace>,
4341 ) {
4342 let active_item = workspace.active_item(cx);
4343 let editor_handle = if let Some(editor) = active_item
4344 .as_ref()
4345 .and_then(|item| item.act_as::<Self>(cx))
4346 {
4347 editor
4348 } else {
4349 return;
4350 };
4351
4352 let editor = editor_handle.read(cx);
4353 let head = editor.newest_selection::<usize>(cx).head();
4354 let (buffer, head) =
4355 if let Some(text_anchor) = editor.buffer.read(cx).text_anchor_for_position(head, cx) {
4356 text_anchor
4357 } else {
4358 return;
4359 };
4360
4361 let project = workspace.project().clone();
4362 let definitions = project.update(cx, |project, cx| project.definition(&buffer, head, cx));
4363 cx.spawn(|workspace, mut cx| async move {
4364 let definitions = definitions.await?;
4365 workspace.update(&mut cx, |workspace, cx| {
4366 let nav_history = workspace.active_pane().read(cx).nav_history().clone();
4367 for definition in definitions {
4368 let range = definition.range.to_offset(definition.buffer.read(cx));
4369
4370 let target_editor_handle = workspace.open_project_item(definition.buffer, cx);
4371 target_editor_handle.update(cx, |target_editor, cx| {
4372 // When selecting a definition in a different buffer, disable the nav history
4373 // to avoid creating a history entry at the previous cursor location.
4374 if editor_handle != target_editor_handle {
4375 nav_history.borrow_mut().disable();
4376 }
4377 target_editor.select_ranges([range], Some(Autoscroll::Center), cx);
4378 nav_history.borrow_mut().enable();
4379 });
4380 }
4381 });
4382
4383 Ok::<(), anyhow::Error>(())
4384 })
4385 .detach_and_log_err(cx);
4386 }
4387
4388 pub fn find_all_references(
4389 workspace: &mut Workspace,
4390 _: &FindAllReferences,
4391 cx: &mut ViewContext<Workspace>,
4392 ) -> Option<Task<Result<()>>> {
4393 let active_item = workspace.active_item(cx)?;
4394 let editor_handle = active_item.act_as::<Self>(cx)?;
4395
4396 let editor = editor_handle.read(cx);
4397 let head = editor.newest_selection::<usize>(cx).head();
4398 let (buffer, head) = editor.buffer.read(cx).text_anchor_for_position(head, cx)?;
4399 let replica_id = editor.replica_id(cx);
4400
4401 let project = workspace.project().clone();
4402 let references = project.update(cx, |project, cx| project.references(&buffer, head, cx));
4403 Some(cx.spawn(|workspace, mut cx| async move {
4404 let mut locations = references.await?;
4405 if locations.is_empty() {
4406 return Ok(());
4407 }
4408
4409 locations.sort_by_key(|location| location.buffer.id());
4410 let mut locations = locations.into_iter().peekable();
4411 let mut ranges_to_highlight = Vec::new();
4412
4413 let excerpt_buffer = cx.add_model(|cx| {
4414 let mut symbol_name = None;
4415 let mut multibuffer = MultiBuffer::new(replica_id);
4416 while let Some(location) = locations.next() {
4417 let buffer = location.buffer.read(cx);
4418 let mut ranges_for_buffer = Vec::new();
4419 let range = location.range.to_offset(buffer);
4420 ranges_for_buffer.push(range.clone());
4421 if symbol_name.is_none() {
4422 symbol_name = Some(buffer.text_for_range(range).collect::<String>());
4423 }
4424
4425 while let Some(next_location) = locations.peek() {
4426 if next_location.buffer == location.buffer {
4427 ranges_for_buffer.push(next_location.range.to_offset(buffer));
4428 locations.next();
4429 } else {
4430 break;
4431 }
4432 }
4433
4434 ranges_for_buffer.sort_by_key(|range| (range.start, Reverse(range.end)));
4435 ranges_to_highlight.extend(multibuffer.push_excerpts_with_context_lines(
4436 location.buffer.clone(),
4437 ranges_for_buffer,
4438 1,
4439 cx,
4440 ));
4441 }
4442 multibuffer.with_title(format!("References to `{}`", symbol_name.unwrap()))
4443 });
4444
4445 workspace.update(&mut cx, |workspace, cx| {
4446 let editor =
4447 cx.add_view(|cx| Editor::for_multibuffer(excerpt_buffer, Some(project), cx));
4448 editor.update(cx, |editor, cx| {
4449 let color = editor.style(cx).highlighted_line_background;
4450 editor.highlight_background::<Self>(ranges_to_highlight, color, cx);
4451 });
4452 workspace.add_item(Box::new(editor), cx);
4453 });
4454
4455 Ok(())
4456 }))
4457 }
4458
4459 pub fn rename(&mut self, _: &Rename, cx: &mut ViewContext<Self>) -> Option<Task<Result<()>>> {
4460 use language::ToOffset as _;
4461
4462 let project = self.project.clone()?;
4463 let selection = self.newest_anchor_selection().clone();
4464 let (cursor_buffer, cursor_buffer_position) = self
4465 .buffer
4466 .read(cx)
4467 .text_anchor_for_position(selection.head(), cx)?;
4468 let (tail_buffer, _) = self
4469 .buffer
4470 .read(cx)
4471 .text_anchor_for_position(selection.tail(), cx)?;
4472 if tail_buffer != cursor_buffer {
4473 return None;
4474 }
4475
4476 let snapshot = cursor_buffer.read(cx).snapshot();
4477 let cursor_buffer_offset = cursor_buffer_position.to_offset(&snapshot);
4478 let prepare_rename = project.update(cx, |project, cx| {
4479 project.prepare_rename(cursor_buffer, cursor_buffer_offset, cx)
4480 });
4481
4482 Some(cx.spawn(|this, mut cx| async move {
4483 if let Some(rename_range) = prepare_rename.await? {
4484 let rename_buffer_range = rename_range.to_offset(&snapshot);
4485 let cursor_offset_in_rename_range =
4486 cursor_buffer_offset.saturating_sub(rename_buffer_range.start);
4487
4488 this.update(&mut cx, |this, cx| {
4489 this.take_rename(false, cx);
4490 let style = this.style(cx);
4491 let buffer = this.buffer.read(cx).read(cx);
4492 let cursor_offset = selection.head().to_offset(&buffer);
4493 let rename_start = cursor_offset.saturating_sub(cursor_offset_in_rename_range);
4494 let rename_end = rename_start + rename_buffer_range.len();
4495 let range = buffer.anchor_before(rename_start)..buffer.anchor_after(rename_end);
4496 let mut old_highlight_id = None;
4497 let old_name = buffer
4498 .chunks(rename_start..rename_end, true)
4499 .map(|chunk| {
4500 if old_highlight_id.is_none() {
4501 old_highlight_id = chunk.syntax_highlight_id;
4502 }
4503 chunk.text
4504 })
4505 .collect();
4506
4507 drop(buffer);
4508
4509 // Position the selection in the rename editor so that it matches the current selection.
4510 this.show_local_selections = false;
4511 let rename_editor = cx.add_view(|cx| {
4512 let mut editor = Editor::single_line(None, cx);
4513 if let Some(old_highlight_id) = old_highlight_id {
4514 editor.override_text_style =
4515 Some(Box::new(move |style| old_highlight_id.style(&style.syntax)));
4516 }
4517 editor
4518 .buffer
4519 .update(cx, |buffer, cx| buffer.edit([0..0], &old_name, cx));
4520 editor.select_all(&SelectAll, cx);
4521 editor
4522 });
4523
4524 let ranges = this
4525 .clear_background_highlights::<DocumentHighlightWrite>(cx)
4526 .into_iter()
4527 .flat_map(|(_, ranges)| ranges)
4528 .chain(
4529 this.clear_background_highlights::<DocumentHighlightRead>(cx)
4530 .into_iter()
4531 .flat_map(|(_, ranges)| ranges),
4532 )
4533 .collect();
4534
4535 this.highlight_text::<Rename>(
4536 ranges,
4537 HighlightStyle {
4538 fade_out: Some(style.rename_fade),
4539 ..Default::default()
4540 },
4541 cx,
4542 );
4543 cx.focus(&rename_editor);
4544 let block_id = this.insert_blocks(
4545 [BlockProperties {
4546 position: range.start.clone(),
4547 height: 1,
4548 render: Arc::new({
4549 let editor = rename_editor.clone();
4550 move |cx: &BlockContext| {
4551 ChildView::new(editor.clone())
4552 .contained()
4553 .with_padding_left(cx.anchor_x)
4554 .boxed()
4555 }
4556 }),
4557 disposition: BlockDisposition::Below,
4558 }],
4559 cx,
4560 )[0];
4561 this.pending_rename = Some(RenameState {
4562 range,
4563 old_name,
4564 editor: rename_editor,
4565 block_id,
4566 });
4567 });
4568 }
4569
4570 Ok(())
4571 }))
4572 }
4573
4574 pub fn confirm_rename(
4575 workspace: &mut Workspace,
4576 _: &ConfirmRename,
4577 cx: &mut ViewContext<Workspace>,
4578 ) -> Option<Task<Result<()>>> {
4579 let editor = workspace.active_item(cx)?.act_as::<Editor>(cx)?;
4580
4581 let (buffer, range, old_name, new_name) = editor.update(cx, |editor, cx| {
4582 let rename = editor.take_rename(false, cx)?;
4583 let buffer = editor.buffer.read(cx);
4584 let (start_buffer, start) =
4585 buffer.text_anchor_for_position(rename.range.start.clone(), cx)?;
4586 let (end_buffer, end) =
4587 buffer.text_anchor_for_position(rename.range.end.clone(), cx)?;
4588 if start_buffer == end_buffer {
4589 let new_name = rename.editor.read(cx).text(cx);
4590 Some((start_buffer, start..end, rename.old_name, new_name))
4591 } else {
4592 None
4593 }
4594 })?;
4595
4596 let rename = workspace.project().clone().update(cx, |project, cx| {
4597 project.perform_rename(
4598 buffer.clone(),
4599 range.start.clone(),
4600 new_name.clone(),
4601 true,
4602 cx,
4603 )
4604 });
4605
4606 Some(cx.spawn(|workspace, mut cx| async move {
4607 let project_transaction = rename.await?;
4608 Self::open_project_transaction(
4609 editor.clone(),
4610 workspace,
4611 project_transaction,
4612 format!("Rename: {} → {}", old_name, new_name),
4613 cx.clone(),
4614 )
4615 .await?;
4616
4617 editor.update(&mut cx, |editor, cx| {
4618 editor.refresh_document_highlights(cx);
4619 });
4620 Ok(())
4621 }))
4622 }
4623
4624 fn take_rename(
4625 &mut self,
4626 moving_cursor: bool,
4627 cx: &mut ViewContext<Self>,
4628 ) -> Option<RenameState> {
4629 let rename = self.pending_rename.take()?;
4630 self.remove_blocks([rename.block_id].into_iter().collect(), cx);
4631 self.clear_text_highlights::<Rename>(cx);
4632 self.show_local_selections = true;
4633
4634 if moving_cursor {
4635 let cursor_in_rename_editor =
4636 rename.editor.read(cx).newest_selection::<usize>(cx).head();
4637
4638 // Update the selection to match the position of the selection inside
4639 // the rename editor.
4640 let snapshot = self.buffer.read(cx).read(cx);
4641 let rename_range = rename.range.to_offset(&snapshot);
4642 let cursor_in_editor = snapshot
4643 .clip_offset(rename_range.start + cursor_in_rename_editor, Bias::Left)
4644 .min(rename_range.end);
4645 drop(snapshot);
4646
4647 self.update_selections(
4648 vec![Selection {
4649 id: self.newest_anchor_selection().id,
4650 start: cursor_in_editor,
4651 end: cursor_in_editor,
4652 reversed: false,
4653 goal: SelectionGoal::None,
4654 }],
4655 None,
4656 cx,
4657 );
4658 }
4659
4660 Some(rename)
4661 }
4662
4663 fn invalidate_rename_range(
4664 &mut self,
4665 buffer: &MultiBufferSnapshot,
4666 cx: &mut ViewContext<Self>,
4667 ) {
4668 if let Some(rename) = self.pending_rename.as_ref() {
4669 if self.selections.len() == 1 {
4670 let head = self.selections[0].head().to_offset(buffer);
4671 let range = rename.range.to_offset(buffer).to_inclusive();
4672 if range.contains(&head) {
4673 return;
4674 }
4675 }
4676 let rename = self.pending_rename.take().unwrap();
4677 self.remove_blocks([rename.block_id].into_iter().collect(), cx);
4678 self.clear_background_highlights::<Rename>(cx);
4679 }
4680 }
4681
4682 #[cfg(any(test, feature = "test-support"))]
4683 pub fn pending_rename(&self) -> Option<&RenameState> {
4684 self.pending_rename.as_ref()
4685 }
4686
4687 fn refresh_active_diagnostics(&mut self, cx: &mut ViewContext<Editor>) {
4688 if let Some(active_diagnostics) = self.active_diagnostics.as_mut() {
4689 let buffer = self.buffer.read(cx).snapshot(cx);
4690 let primary_range_start = active_diagnostics.primary_range.start.to_offset(&buffer);
4691 let is_valid = buffer
4692 .diagnostics_in_range::<_, usize>(active_diagnostics.primary_range.clone(), false)
4693 .any(|entry| {
4694 entry.diagnostic.is_primary
4695 && !entry.range.is_empty()
4696 && entry.range.start == primary_range_start
4697 && entry.diagnostic.message == active_diagnostics.primary_message
4698 });
4699
4700 if is_valid != active_diagnostics.is_valid {
4701 active_diagnostics.is_valid = is_valid;
4702 let mut new_styles = HashMap::default();
4703 for (block_id, diagnostic) in &active_diagnostics.blocks {
4704 new_styles.insert(
4705 *block_id,
4706 diagnostic_block_renderer(diagnostic.clone(), is_valid),
4707 );
4708 }
4709 self.display_map
4710 .update(cx, |display_map, _| display_map.replace_blocks(new_styles));
4711 }
4712 }
4713 }
4714
4715 fn activate_diagnostics(&mut self, group_id: usize, cx: &mut ViewContext<Self>) {
4716 self.dismiss_diagnostics(cx);
4717 self.active_diagnostics = self.display_map.update(cx, |display_map, cx| {
4718 let buffer = self.buffer.read(cx).snapshot(cx);
4719
4720 let mut primary_range = None;
4721 let mut primary_message = None;
4722 let mut group_end = Point::zero();
4723 let diagnostic_group = buffer
4724 .diagnostic_group::<Point>(group_id)
4725 .map(|entry| {
4726 if entry.range.end > group_end {
4727 group_end = entry.range.end;
4728 }
4729 if entry.diagnostic.is_primary {
4730 primary_range = Some(entry.range.clone());
4731 primary_message = Some(entry.diagnostic.message.clone());
4732 }
4733 entry
4734 })
4735 .collect::<Vec<_>>();
4736 let primary_range = primary_range.unwrap();
4737 let primary_message = primary_message.unwrap();
4738 let primary_range =
4739 buffer.anchor_after(primary_range.start)..buffer.anchor_before(primary_range.end);
4740
4741 let blocks = display_map
4742 .insert_blocks(
4743 diagnostic_group.iter().map(|entry| {
4744 let diagnostic = entry.diagnostic.clone();
4745 let message_height = diagnostic.message.lines().count() as u8;
4746 BlockProperties {
4747 position: buffer.anchor_after(entry.range.start),
4748 height: message_height,
4749 render: diagnostic_block_renderer(diagnostic, true),
4750 disposition: BlockDisposition::Below,
4751 }
4752 }),
4753 cx,
4754 )
4755 .into_iter()
4756 .zip(diagnostic_group.into_iter().map(|entry| entry.diagnostic))
4757 .collect();
4758
4759 Some(ActiveDiagnosticGroup {
4760 primary_range,
4761 primary_message,
4762 blocks,
4763 is_valid: true,
4764 })
4765 });
4766 }
4767
4768 fn dismiss_diagnostics(&mut self, cx: &mut ViewContext<Self>) {
4769 if let Some(active_diagnostic_group) = self.active_diagnostics.take() {
4770 self.display_map.update(cx, |display_map, cx| {
4771 display_map.remove_blocks(active_diagnostic_group.blocks.into_keys().collect(), cx);
4772 });
4773 cx.notify();
4774 }
4775 }
4776
4777 fn build_columnar_selection(
4778 &mut self,
4779 display_map: &DisplaySnapshot,
4780 row: u32,
4781 columns: &Range<u32>,
4782 reversed: bool,
4783 ) -> Option<Selection<Point>> {
4784 let is_empty = columns.start == columns.end;
4785 let line_len = display_map.line_len(row);
4786 if columns.start < line_len || (is_empty && columns.start == line_len) {
4787 let start = DisplayPoint::new(row, columns.start);
4788 let end = DisplayPoint::new(row, cmp::min(columns.end, line_len));
4789 Some(Selection {
4790 id: post_inc(&mut self.next_selection_id),
4791 start: start.to_point(display_map),
4792 end: end.to_point(display_map),
4793 reversed,
4794 goal: SelectionGoal::ColumnRange {
4795 start: columns.start,
4796 end: columns.end,
4797 },
4798 })
4799 } else {
4800 None
4801 }
4802 }
4803
4804 pub fn local_selections_in_range(
4805 &self,
4806 range: Range<Anchor>,
4807 display_map: &DisplaySnapshot,
4808 ) -> Vec<Selection<Point>> {
4809 let buffer = &display_map.buffer_snapshot;
4810
4811 let start_ix = match self
4812 .selections
4813 .binary_search_by(|probe| probe.end.cmp(&range.start, &buffer))
4814 {
4815 Ok(ix) | Err(ix) => ix,
4816 };
4817 let end_ix = match self
4818 .selections
4819 .binary_search_by(|probe| probe.start.cmp(&range.end, &buffer))
4820 {
4821 Ok(ix) => ix + 1,
4822 Err(ix) => ix,
4823 };
4824
4825 fn point_selection(
4826 selection: &Selection<Anchor>,
4827 buffer: &MultiBufferSnapshot,
4828 ) -> Selection<Point> {
4829 let start = selection.start.to_point(&buffer);
4830 let end = selection.end.to_point(&buffer);
4831 Selection {
4832 id: selection.id,
4833 start,
4834 end,
4835 reversed: selection.reversed,
4836 goal: selection.goal,
4837 }
4838 }
4839
4840 self.selections[start_ix..end_ix]
4841 .iter()
4842 .chain(
4843 self.pending_selection
4844 .as_ref()
4845 .map(|pending| &pending.selection),
4846 )
4847 .map(|s| point_selection(s, &buffer))
4848 .collect()
4849 }
4850
4851 pub fn local_selections<'a, D>(&self, cx: &'a AppContext) -> Vec<Selection<D>>
4852 where
4853 D: 'a + TextDimension + Ord + Sub<D, Output = D>,
4854 {
4855 let buffer = self.buffer.read(cx).snapshot(cx);
4856 let mut selections = self
4857 .resolve_selections::<D, _>(self.selections.iter(), &buffer)
4858 .peekable();
4859
4860 let mut pending_selection = self.pending_selection::<D>(&buffer);
4861
4862 iter::from_fn(move || {
4863 if let Some(pending) = pending_selection.as_mut() {
4864 while let Some(next_selection) = selections.peek() {
4865 if pending.start <= next_selection.end && pending.end >= next_selection.start {
4866 let next_selection = selections.next().unwrap();
4867 if next_selection.start < pending.start {
4868 pending.start = next_selection.start;
4869 }
4870 if next_selection.end > pending.end {
4871 pending.end = next_selection.end;
4872 }
4873 } else if next_selection.end < pending.start {
4874 return selections.next();
4875 } else {
4876 break;
4877 }
4878 }
4879
4880 pending_selection.take()
4881 } else {
4882 selections.next()
4883 }
4884 })
4885 .collect()
4886 }
4887
4888 fn resolve_selections<'a, D, I>(
4889 &self,
4890 selections: I,
4891 snapshot: &MultiBufferSnapshot,
4892 ) -> impl 'a + Iterator<Item = Selection<D>>
4893 where
4894 D: TextDimension + Ord + Sub<D, Output = D>,
4895 I: 'a + IntoIterator<Item = &'a Selection<Anchor>>,
4896 {
4897 let (to_summarize, selections) = selections.into_iter().tee();
4898 let mut summaries = snapshot
4899 .summaries_for_anchors::<D, _>(to_summarize.flat_map(|s| [&s.start, &s.end]))
4900 .into_iter();
4901 selections.map(move |s| Selection {
4902 id: s.id,
4903 start: summaries.next().unwrap(),
4904 end: summaries.next().unwrap(),
4905 reversed: s.reversed,
4906 goal: s.goal,
4907 })
4908 }
4909
4910 fn pending_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
4911 &self,
4912 snapshot: &MultiBufferSnapshot,
4913 ) -> Option<Selection<D>> {
4914 self.pending_selection
4915 .as_ref()
4916 .map(|pending| self.resolve_selection(&pending.selection, &snapshot))
4917 }
4918
4919 fn resolve_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
4920 &self,
4921 selection: &Selection<Anchor>,
4922 buffer: &MultiBufferSnapshot,
4923 ) -> Selection<D> {
4924 Selection {
4925 id: selection.id,
4926 start: selection.start.summary::<D>(&buffer),
4927 end: selection.end.summary::<D>(&buffer),
4928 reversed: selection.reversed,
4929 goal: selection.goal,
4930 }
4931 }
4932
4933 fn selection_count<'a>(&self) -> usize {
4934 let mut count = self.selections.len();
4935 if self.pending_selection.is_some() {
4936 count += 1;
4937 }
4938 count
4939 }
4940
4941 pub fn oldest_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
4942 &self,
4943 cx: &AppContext,
4944 ) -> Selection<D> {
4945 let snapshot = self.buffer.read(cx).read(cx);
4946 self.selections
4947 .iter()
4948 .min_by_key(|s| s.id)
4949 .map(|selection| self.resolve_selection(selection, &snapshot))
4950 .or_else(|| self.pending_selection(&snapshot))
4951 .unwrap()
4952 }
4953
4954 pub fn newest_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
4955 &self,
4956 cx: &AppContext,
4957 ) -> Selection<D> {
4958 self.resolve_selection(
4959 self.newest_anchor_selection(),
4960 &self.buffer.read(cx).read(cx),
4961 )
4962 }
4963
4964 pub fn newest_selection_with_snapshot<D: TextDimension + Ord + Sub<D, Output = D>>(
4965 &self,
4966 snapshot: &MultiBufferSnapshot,
4967 ) -> Selection<D> {
4968 self.resolve_selection(self.newest_anchor_selection(), snapshot)
4969 }
4970
4971 pub fn newest_anchor_selection(&self) -> &Selection<Anchor> {
4972 self.pending_selection
4973 .as_ref()
4974 .map(|s| &s.selection)
4975 .or_else(|| self.selections.iter().max_by_key(|s| s.id))
4976 .unwrap()
4977 }
4978
4979 pub fn update_selections<T>(
4980 &mut self,
4981 mut selections: Vec<Selection<T>>,
4982 autoscroll: Option<Autoscroll>,
4983 cx: &mut ViewContext<Self>,
4984 ) where
4985 T: ToOffset + ToPoint + Ord + std::marker::Copy + std::fmt::Debug,
4986 {
4987 let buffer = self.buffer.read(cx).snapshot(cx);
4988 selections.sort_unstable_by_key(|s| s.start);
4989
4990 // Merge overlapping selections.
4991 let mut i = 1;
4992 while i < selections.len() {
4993 if selections[i - 1].end >= selections[i].start {
4994 let removed = selections.remove(i);
4995 if removed.start < selections[i - 1].start {
4996 selections[i - 1].start = removed.start;
4997 }
4998 if removed.end > selections[i - 1].end {
4999 selections[i - 1].end = removed.end;
5000 }
5001 } else {
5002 i += 1;
5003 }
5004 }
5005
5006 if let Some(autoscroll) = autoscroll {
5007 self.request_autoscroll(autoscroll, cx);
5008 }
5009
5010 self.set_selections(
5011 Arc::from_iter(selections.into_iter().map(|selection| {
5012 let end_bias = if selection.end > selection.start {
5013 Bias::Left
5014 } else {
5015 Bias::Right
5016 };
5017 Selection {
5018 id: selection.id,
5019 start: buffer.anchor_after(selection.start),
5020 end: buffer.anchor_at(selection.end, end_bias),
5021 reversed: selection.reversed,
5022 goal: selection.goal,
5023 }
5024 })),
5025 None,
5026 true,
5027 cx,
5028 );
5029 }
5030
5031 pub fn set_selections_from_remote(
5032 &mut self,
5033 mut selections: Vec<Selection<Anchor>>,
5034 cx: &mut ViewContext<Self>,
5035 ) {
5036 let buffer = self.buffer.read(cx);
5037 let buffer = buffer.read(cx);
5038 selections.sort_by(|a, b| {
5039 a.start
5040 .cmp(&b.start, &*buffer)
5041 .then_with(|| b.end.cmp(&a.end, &*buffer))
5042 });
5043
5044 // Merge overlapping selections
5045 let mut i = 1;
5046 while i < selections.len() {
5047 if selections[i - 1]
5048 .end
5049 .cmp(&selections[i].start, &*buffer)
5050 .is_ge()
5051 {
5052 let removed = selections.remove(i);
5053 if removed
5054 .start
5055 .cmp(&selections[i - 1].start, &*buffer)
5056 .is_lt()
5057 {
5058 selections[i - 1].start = removed.start;
5059 }
5060 if removed.end.cmp(&selections[i - 1].end, &*buffer).is_gt() {
5061 selections[i - 1].end = removed.end;
5062 }
5063 } else {
5064 i += 1;
5065 }
5066 }
5067
5068 drop(buffer);
5069 self.set_selections(selections.into(), None, false, cx);
5070 }
5071
5072 /// Compute new ranges for any selections that were located in excerpts that have
5073 /// since been removed.
5074 ///
5075 /// Returns a `HashMap` indicating which selections whose former head position
5076 /// was no longer present. The keys of the map are selection ids. The values are
5077 /// the id of the new excerpt where the head of the selection has been moved.
5078 pub fn refresh_selections(&mut self, cx: &mut ViewContext<Self>) -> HashMap<usize, ExcerptId> {
5079 let snapshot = self.buffer.read(cx).read(cx);
5080 let mut selections_with_lost_position = HashMap::default();
5081
5082 let mut pending_selection = self.pending_selection.take();
5083 if let Some(pending) = pending_selection.as_mut() {
5084 let anchors =
5085 snapshot.refresh_anchors([&pending.selection.start, &pending.selection.end]);
5086 let (_, start, kept_start) = anchors[0].clone();
5087 let (_, end, kept_end) = anchors[1].clone();
5088 let kept_head = if pending.selection.reversed {
5089 kept_start
5090 } else {
5091 kept_end
5092 };
5093 if !kept_head {
5094 selections_with_lost_position.insert(
5095 pending.selection.id,
5096 pending.selection.head().excerpt_id.clone(),
5097 );
5098 }
5099
5100 pending.selection.start = start;
5101 pending.selection.end = end;
5102 }
5103
5104 let anchors_with_status = snapshot.refresh_anchors(
5105 self.selections
5106 .iter()
5107 .flat_map(|selection| [&selection.start, &selection.end]),
5108 );
5109 self.selections = anchors_with_status
5110 .chunks(2)
5111 .map(|selection_anchors| {
5112 let (anchor_ix, start, kept_start) = selection_anchors[0].clone();
5113 let (_, end, kept_end) = selection_anchors[1].clone();
5114 let selection = &self.selections[anchor_ix / 2];
5115 let kept_head = if selection.reversed {
5116 kept_start
5117 } else {
5118 kept_end
5119 };
5120 if !kept_head {
5121 selections_with_lost_position
5122 .insert(selection.id, selection.head().excerpt_id.clone());
5123 }
5124
5125 Selection {
5126 id: selection.id,
5127 start,
5128 end,
5129 reversed: selection.reversed,
5130 goal: selection.goal,
5131 }
5132 })
5133 .collect();
5134 drop(snapshot);
5135
5136 let new_selections = self.local_selections::<usize>(cx);
5137 if !new_selections.is_empty() {
5138 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
5139 }
5140 self.pending_selection = pending_selection;
5141
5142 selections_with_lost_position
5143 }
5144
5145 fn set_selections(
5146 &mut self,
5147 selections: Arc<[Selection<Anchor>]>,
5148 pending_selection: Option<PendingSelection>,
5149 local: bool,
5150 cx: &mut ViewContext<Self>,
5151 ) {
5152 assert!(
5153 !selections.is_empty() || pending_selection.is_some(),
5154 "must have at least one selection"
5155 );
5156
5157 let old_cursor_position = self.newest_anchor_selection().head();
5158
5159 self.selections = selections;
5160 self.pending_selection = pending_selection;
5161 if self.focused && self.leader_replica_id.is_none() {
5162 self.buffer.update(cx, |buffer, cx| {
5163 buffer.set_active_selections(&self.selections, cx)
5164 });
5165 }
5166
5167 let display_map = self
5168 .display_map
5169 .update(cx, |display_map, cx| display_map.snapshot(cx));
5170 let buffer = &display_map.buffer_snapshot;
5171 self.add_selections_state = None;
5172 self.select_next_state = None;
5173 self.select_larger_syntax_node_stack.clear();
5174 self.autoclose_stack.invalidate(&self.selections, &buffer);
5175 self.snippet_stack.invalidate(&self.selections, &buffer);
5176 self.invalidate_rename_range(&buffer, cx);
5177
5178 let new_cursor_position = self.newest_anchor_selection().head();
5179
5180 self.push_to_nav_history(
5181 old_cursor_position.clone(),
5182 Some(new_cursor_position.to_point(&buffer)),
5183 cx,
5184 );
5185
5186 if local {
5187 let completion_menu = match self.context_menu.as_mut() {
5188 Some(ContextMenu::Completions(menu)) => Some(menu),
5189 _ => {
5190 self.context_menu.take();
5191 None
5192 }
5193 };
5194
5195 if let Some(completion_menu) = completion_menu {
5196 let cursor_position = new_cursor_position.to_offset(&buffer);
5197 let (word_range, kind) =
5198 buffer.surrounding_word(completion_menu.initial_position.clone());
5199 if kind == Some(CharKind::Word)
5200 && word_range.to_inclusive().contains(&cursor_position)
5201 {
5202 let query = Self::completion_query(&buffer, cursor_position);
5203 cx.background()
5204 .block(completion_menu.filter(query.as_deref(), cx.background().clone()));
5205 self.show_completions(&ShowCompletions, cx);
5206 } else {
5207 self.hide_context_menu(cx);
5208 }
5209 }
5210
5211 if old_cursor_position.to_display_point(&display_map).row()
5212 != new_cursor_position.to_display_point(&display_map).row()
5213 {
5214 self.available_code_actions.take();
5215 }
5216 self.refresh_code_actions(cx);
5217 self.refresh_document_highlights(cx);
5218 }
5219
5220 self.pause_cursor_blinking(cx);
5221 cx.emit(Event::SelectionsChanged { local });
5222 }
5223
5224 pub fn request_autoscroll(&mut self, autoscroll: Autoscroll, cx: &mut ViewContext<Self>) {
5225 self.autoscroll_request = Some((autoscroll, true));
5226 cx.notify();
5227 }
5228
5229 fn request_autoscroll_remotely(&mut self, autoscroll: Autoscroll, cx: &mut ViewContext<Self>) {
5230 self.autoscroll_request = Some((autoscroll, false));
5231 cx.notify();
5232 }
5233
5234 pub fn transact(
5235 &mut self,
5236 cx: &mut ViewContext<Self>,
5237 update: impl FnOnce(&mut Self, &mut ViewContext<Self>),
5238 ) {
5239 self.start_transaction_at(Instant::now(), cx);
5240 update(self, cx);
5241 self.end_transaction_at(Instant::now(), cx);
5242 }
5243
5244 fn start_transaction_at(&mut self, now: Instant, cx: &mut ViewContext<Self>) {
5245 self.end_selection(cx);
5246 if let Some(tx_id) = self
5247 .buffer
5248 .update(cx, |buffer, cx| buffer.start_transaction_at(now, cx))
5249 {
5250 self.selection_history
5251 .insert(tx_id, (self.selections.clone(), None));
5252 }
5253 }
5254
5255 fn end_transaction_at(&mut self, now: Instant, cx: &mut ViewContext<Self>) {
5256 if let Some(tx_id) = self
5257 .buffer
5258 .update(cx, |buffer, cx| buffer.end_transaction_at(now, cx))
5259 {
5260 if let Some((_, end_selections)) = self.selection_history.get_mut(&tx_id) {
5261 *end_selections = Some(self.selections.clone());
5262 } else {
5263 log::error!("unexpectedly ended a transaction that wasn't started by this editor");
5264 }
5265
5266 cx.emit(Event::Edited);
5267 }
5268 }
5269
5270 pub fn page_up(&mut self, _: &PageUp, _: &mut ViewContext<Self>) {
5271 log::info!("Editor::page_up");
5272 }
5273
5274 pub fn page_down(&mut self, _: &PageDown, _: &mut ViewContext<Self>) {
5275 log::info!("Editor::page_down");
5276 }
5277
5278 pub fn fold(&mut self, _: &Fold, cx: &mut ViewContext<Self>) {
5279 let mut fold_ranges = Vec::new();
5280
5281 let selections = self.local_selections::<Point>(cx);
5282 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
5283 for selection in selections {
5284 let range = selection.display_range(&display_map).sorted();
5285 let buffer_start_row = range.start.to_point(&display_map).row;
5286
5287 for row in (0..=range.end.row()).rev() {
5288 if self.is_line_foldable(&display_map, row) && !display_map.is_line_folded(row) {
5289 let fold_range = self.foldable_range_for_line(&display_map, row);
5290 if fold_range.end.row >= buffer_start_row {
5291 fold_ranges.push(fold_range);
5292 if row <= range.start.row() {
5293 break;
5294 }
5295 }
5296 }
5297 }
5298 }
5299
5300 self.fold_ranges(fold_ranges, cx);
5301 }
5302
5303 pub fn unfold_lines(&mut self, _: &UnfoldLines, cx: &mut ViewContext<Self>) {
5304 let selections = self.local_selections::<Point>(cx);
5305 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
5306 let buffer = &display_map.buffer_snapshot;
5307 let ranges = selections
5308 .iter()
5309 .map(|s| {
5310 let range = s.display_range(&display_map).sorted();
5311 let mut start = range.start.to_point(&display_map);
5312 let mut end = range.end.to_point(&display_map);
5313 start.column = 0;
5314 end.column = buffer.line_len(end.row);
5315 start..end
5316 })
5317 .collect::<Vec<_>>();
5318 self.unfold_ranges(ranges, true, cx);
5319 }
5320
5321 fn is_line_foldable(&self, display_map: &DisplaySnapshot, display_row: u32) -> bool {
5322 let max_point = display_map.max_point();
5323 if display_row >= max_point.row() {
5324 false
5325 } else {
5326 let (start_indent, is_blank) = display_map.line_indent(display_row);
5327 if is_blank {
5328 false
5329 } else {
5330 for display_row in display_row + 1..=max_point.row() {
5331 let (indent, is_blank) = display_map.line_indent(display_row);
5332 if !is_blank {
5333 return indent > start_indent;
5334 }
5335 }
5336 false
5337 }
5338 }
5339 }
5340
5341 fn foldable_range_for_line(
5342 &self,
5343 display_map: &DisplaySnapshot,
5344 start_row: u32,
5345 ) -> Range<Point> {
5346 let max_point = display_map.max_point();
5347
5348 let (start_indent, _) = display_map.line_indent(start_row);
5349 let start = DisplayPoint::new(start_row, display_map.line_len(start_row));
5350 let mut end = None;
5351 for row in start_row + 1..=max_point.row() {
5352 let (indent, is_blank) = display_map.line_indent(row);
5353 if !is_blank && indent <= start_indent {
5354 end = Some(DisplayPoint::new(row - 1, display_map.line_len(row - 1)));
5355 break;
5356 }
5357 }
5358
5359 let end = end.unwrap_or(max_point);
5360 return start.to_point(display_map)..end.to_point(display_map);
5361 }
5362
5363 pub fn fold_selected_ranges(&mut self, _: &FoldSelectedRanges, cx: &mut ViewContext<Self>) {
5364 let selections = self.local_selections::<Point>(cx);
5365 let ranges = selections.into_iter().map(|s| s.start..s.end);
5366 self.fold_ranges(ranges, cx);
5367 }
5368
5369 pub fn fold_ranges<T: ToOffset>(
5370 &mut self,
5371 ranges: impl IntoIterator<Item = Range<T>>,
5372 cx: &mut ViewContext<Self>,
5373 ) {
5374 let mut ranges = ranges.into_iter().peekable();
5375 if ranges.peek().is_some() {
5376 self.display_map.update(cx, |map, cx| map.fold(ranges, cx));
5377 self.request_autoscroll(Autoscroll::Fit, cx);
5378 cx.notify();
5379 }
5380 }
5381
5382 pub fn unfold_ranges<T: ToOffset>(
5383 &mut self,
5384 ranges: impl IntoIterator<Item = Range<T>>,
5385 inclusive: bool,
5386 cx: &mut ViewContext<Self>,
5387 ) {
5388 let mut ranges = ranges.into_iter().peekable();
5389 if ranges.peek().is_some() {
5390 self.display_map
5391 .update(cx, |map, cx| map.unfold(ranges, inclusive, cx));
5392 self.request_autoscroll(Autoscroll::Fit, cx);
5393 cx.notify();
5394 }
5395 }
5396
5397 pub fn insert_blocks(
5398 &mut self,
5399 blocks: impl IntoIterator<Item = BlockProperties<Anchor>>,
5400 cx: &mut ViewContext<Self>,
5401 ) -> Vec<BlockId> {
5402 let blocks = self
5403 .display_map
5404 .update(cx, |display_map, cx| display_map.insert_blocks(blocks, cx));
5405 self.request_autoscroll(Autoscroll::Fit, cx);
5406 blocks
5407 }
5408
5409 pub fn replace_blocks(
5410 &mut self,
5411 blocks: HashMap<BlockId, RenderBlock>,
5412 cx: &mut ViewContext<Self>,
5413 ) {
5414 self.display_map
5415 .update(cx, |display_map, _| display_map.replace_blocks(blocks));
5416 self.request_autoscroll(Autoscroll::Fit, cx);
5417 }
5418
5419 pub fn remove_blocks(&mut self, block_ids: HashSet<BlockId>, cx: &mut ViewContext<Self>) {
5420 self.display_map.update(cx, |display_map, cx| {
5421 display_map.remove_blocks(block_ids, cx)
5422 });
5423 }
5424
5425 pub fn longest_row(&self, cx: &mut MutableAppContext) -> u32 {
5426 self.display_map
5427 .update(cx, |map, cx| map.snapshot(cx))
5428 .longest_row()
5429 }
5430
5431 pub fn max_point(&self, cx: &mut MutableAppContext) -> DisplayPoint {
5432 self.display_map
5433 .update(cx, |map, cx| map.snapshot(cx))
5434 .max_point()
5435 }
5436
5437 pub fn text(&self, cx: &AppContext) -> String {
5438 self.buffer.read(cx).read(cx).text()
5439 }
5440
5441 pub fn set_text(&mut self, text: impl Into<String>, cx: &mut ViewContext<Self>) {
5442 self.transact(cx, |this, cx| {
5443 this.buffer
5444 .read(cx)
5445 .as_singleton()
5446 .expect("you can only call set_text on editors for singleton buffers")
5447 .update(cx, |buffer, cx| buffer.set_text(text, cx));
5448 });
5449 }
5450
5451 pub fn display_text(&self, cx: &mut MutableAppContext) -> String {
5452 self.display_map
5453 .update(cx, |map, cx| map.snapshot(cx))
5454 .text()
5455 }
5456
5457 pub fn soft_wrap_mode(&self, cx: &AppContext) -> SoftWrap {
5458 let language = self.language(cx);
5459 let settings = cx.global::<Settings>();
5460 let mode = self
5461 .soft_wrap_mode_override
5462 .unwrap_or_else(|| settings.soft_wrap(language));
5463 match mode {
5464 settings::SoftWrap::None => SoftWrap::None,
5465 settings::SoftWrap::EditorWidth => SoftWrap::EditorWidth,
5466 settings::SoftWrap::PreferredLineLength => {
5467 SoftWrap::Column(settings.preferred_line_length(language))
5468 }
5469 }
5470 }
5471
5472 pub fn set_soft_wrap_mode(&mut self, mode: settings::SoftWrap, cx: &mut ViewContext<Self>) {
5473 self.soft_wrap_mode_override = Some(mode);
5474 cx.notify();
5475 }
5476
5477 pub fn set_wrap_width(&self, width: Option<f32>, cx: &mut MutableAppContext) -> bool {
5478 self.display_map
5479 .update(cx, |map, cx| map.set_wrap_width(width, cx))
5480 }
5481
5482 pub fn highlight_rows(&mut self, rows: Option<Range<u32>>) {
5483 self.highlighted_rows = rows;
5484 }
5485
5486 pub fn highlighted_rows(&self) -> Option<Range<u32>> {
5487 self.highlighted_rows.clone()
5488 }
5489
5490 pub fn highlight_background<T: 'static>(
5491 &mut self,
5492 ranges: Vec<Range<Anchor>>,
5493 color: Color,
5494 cx: &mut ViewContext<Self>,
5495 ) {
5496 self.background_highlights
5497 .insert(TypeId::of::<T>(), (color, ranges));
5498 cx.notify();
5499 }
5500
5501 pub fn clear_background_highlights<T: 'static>(
5502 &mut self,
5503 cx: &mut ViewContext<Self>,
5504 ) -> Option<(Color, Vec<Range<Anchor>>)> {
5505 cx.notify();
5506 self.background_highlights.remove(&TypeId::of::<T>())
5507 }
5508
5509 #[cfg(feature = "test-support")]
5510 pub fn all_background_highlights(
5511 &mut self,
5512 cx: &mut ViewContext<Self>,
5513 ) -> Vec<(Range<DisplayPoint>, Color)> {
5514 let snapshot = self.snapshot(cx);
5515 let buffer = &snapshot.buffer_snapshot;
5516 let start = buffer.anchor_before(0);
5517 let end = buffer.anchor_after(buffer.len());
5518 self.background_highlights_in_range(start..end, &snapshot)
5519 }
5520
5521 pub fn background_highlights_for_type<T: 'static>(&self) -> Option<(Color, &[Range<Anchor>])> {
5522 self.background_highlights
5523 .get(&TypeId::of::<T>())
5524 .map(|(color, ranges)| (*color, ranges.as_slice()))
5525 }
5526
5527 pub fn background_highlights_in_range(
5528 &self,
5529 search_range: Range<Anchor>,
5530 display_snapshot: &DisplaySnapshot,
5531 ) -> Vec<(Range<DisplayPoint>, Color)> {
5532 let mut results = Vec::new();
5533 let buffer = &display_snapshot.buffer_snapshot;
5534 for (color, ranges) in self.background_highlights.values() {
5535 let start_ix = match ranges.binary_search_by(|probe| {
5536 let cmp = probe.end.cmp(&search_range.start, &buffer);
5537 if cmp.is_gt() {
5538 Ordering::Greater
5539 } else {
5540 Ordering::Less
5541 }
5542 }) {
5543 Ok(i) | Err(i) => i,
5544 };
5545 for range in &ranges[start_ix..] {
5546 if range.start.cmp(&search_range.end, &buffer).is_ge() {
5547 break;
5548 }
5549 let start = range
5550 .start
5551 .to_point(buffer)
5552 .to_display_point(display_snapshot);
5553 let end = range
5554 .end
5555 .to_point(buffer)
5556 .to_display_point(display_snapshot);
5557 results.push((start..end, *color))
5558 }
5559 }
5560 results
5561 }
5562
5563 pub fn highlight_text<T: 'static>(
5564 &mut self,
5565 ranges: Vec<Range<Anchor>>,
5566 style: HighlightStyle,
5567 cx: &mut ViewContext<Self>,
5568 ) {
5569 self.display_map.update(cx, |map, _| {
5570 map.highlight_text(TypeId::of::<T>(), ranges, style)
5571 });
5572 cx.notify();
5573 }
5574
5575 pub fn clear_text_highlights<T: 'static>(
5576 &mut self,
5577 cx: &mut ViewContext<Self>,
5578 ) -> Option<Arc<(HighlightStyle, Vec<Range<Anchor>>)>> {
5579 cx.notify();
5580 self.display_map
5581 .update(cx, |map, _| map.clear_text_highlights(TypeId::of::<T>()))
5582 }
5583
5584 fn next_blink_epoch(&mut self) -> usize {
5585 self.blink_epoch += 1;
5586 self.blink_epoch
5587 }
5588
5589 fn pause_cursor_blinking(&mut self, cx: &mut ViewContext<Self>) {
5590 if !self.focused {
5591 return;
5592 }
5593
5594 self.show_local_cursors = true;
5595 cx.notify();
5596
5597 let epoch = self.next_blink_epoch();
5598 cx.spawn(|this, mut cx| {
5599 let this = this.downgrade();
5600 async move {
5601 Timer::after(CURSOR_BLINK_INTERVAL).await;
5602 if let Some(this) = this.upgrade(&cx) {
5603 this.update(&mut cx, |this, cx| this.resume_cursor_blinking(epoch, cx))
5604 }
5605 }
5606 })
5607 .detach();
5608 }
5609
5610 fn resume_cursor_blinking(&mut self, epoch: usize, cx: &mut ViewContext<Self>) {
5611 if epoch == self.blink_epoch {
5612 self.blinking_paused = false;
5613 self.blink_cursors(epoch, cx);
5614 }
5615 }
5616
5617 fn blink_cursors(&mut self, epoch: usize, cx: &mut ViewContext<Self>) {
5618 if epoch == self.blink_epoch && self.focused && !self.blinking_paused {
5619 self.show_local_cursors = !self.show_local_cursors;
5620 cx.notify();
5621
5622 let epoch = self.next_blink_epoch();
5623 cx.spawn(|this, mut cx| {
5624 let this = this.downgrade();
5625 async move {
5626 Timer::after(CURSOR_BLINK_INTERVAL).await;
5627 if let Some(this) = this.upgrade(&cx) {
5628 this.update(&mut cx, |this, cx| this.blink_cursors(epoch, cx));
5629 }
5630 }
5631 })
5632 .detach();
5633 }
5634 }
5635
5636 pub fn show_local_cursors(&self) -> bool {
5637 self.show_local_cursors && self.focused
5638 }
5639
5640 fn on_buffer_changed(&mut self, _: ModelHandle<MultiBuffer>, cx: &mut ViewContext<Self>) {
5641 cx.notify();
5642 }
5643
5644 fn on_buffer_event(
5645 &mut self,
5646 _: ModelHandle<MultiBuffer>,
5647 event: &language::Event,
5648 cx: &mut ViewContext<Self>,
5649 ) {
5650 match event {
5651 language::Event::Edited => {
5652 self.refresh_active_diagnostics(cx);
5653 self.refresh_code_actions(cx);
5654 cx.emit(Event::BufferEdited);
5655 }
5656 language::Event::Dirtied => cx.emit(Event::Dirtied),
5657 language::Event::Saved => cx.emit(Event::Saved),
5658 language::Event::FileHandleChanged => cx.emit(Event::TitleChanged),
5659 language::Event::Reloaded => cx.emit(Event::TitleChanged),
5660 language::Event::Closed => cx.emit(Event::Closed),
5661 language::Event::DiagnosticsUpdated => {
5662 self.refresh_active_diagnostics(cx);
5663 }
5664 _ => {}
5665 }
5666 }
5667
5668 fn on_display_map_changed(&mut self, _: ModelHandle<DisplayMap>, cx: &mut ViewContext<Self>) {
5669 cx.notify();
5670 }
5671
5672 pub fn set_searchable(&mut self, searchable: bool) {
5673 self.searchable = searchable;
5674 }
5675
5676 pub fn searchable(&self) -> bool {
5677 self.searchable
5678 }
5679
5680 fn open_excerpts(workspace: &mut Workspace, _: &OpenExcerpts, cx: &mut ViewContext<Workspace>) {
5681 let active_item = workspace.active_item(cx);
5682 let editor_handle = if let Some(editor) = active_item
5683 .as_ref()
5684 .and_then(|item| item.act_as::<Self>(cx))
5685 {
5686 editor
5687 } else {
5688 cx.propagate_action();
5689 return;
5690 };
5691
5692 let editor = editor_handle.read(cx);
5693 let buffer = editor.buffer.read(cx);
5694 if buffer.is_singleton() {
5695 cx.propagate_action();
5696 return;
5697 }
5698
5699 let mut new_selections_by_buffer = HashMap::default();
5700 for selection in editor.local_selections::<usize>(cx) {
5701 for (buffer, mut range) in
5702 buffer.range_to_buffer_ranges(selection.start..selection.end, cx)
5703 {
5704 if selection.reversed {
5705 mem::swap(&mut range.start, &mut range.end);
5706 }
5707 new_selections_by_buffer
5708 .entry(buffer)
5709 .or_insert(Vec::new())
5710 .push(range)
5711 }
5712 }
5713
5714 editor_handle.update(cx, |editor, cx| {
5715 editor.push_to_nav_history(editor.newest_anchor_selection().head(), None, cx);
5716 });
5717 let nav_history = workspace.active_pane().read(cx).nav_history().clone();
5718 nav_history.borrow_mut().disable();
5719
5720 // We defer the pane interaction because we ourselves are a workspace item
5721 // and activating a new item causes the pane to call a method on us reentrantly,
5722 // which panics if we're on the stack.
5723 cx.defer(move |workspace, cx| {
5724 workspace.activate_next_pane(cx);
5725
5726 for (buffer, ranges) in new_selections_by_buffer.into_iter() {
5727 let editor = workspace.open_project_item::<Self>(buffer, cx);
5728 editor.update(cx, |editor, cx| {
5729 editor.select_ranges(ranges, Some(Autoscroll::Newest), cx);
5730 });
5731 }
5732
5733 nav_history.borrow_mut().enable();
5734 });
5735 }
5736}
5737
5738impl EditorSnapshot {
5739 pub fn is_focused(&self) -> bool {
5740 self.is_focused
5741 }
5742
5743 pub fn placeholder_text(&self) -> Option<&Arc<str>> {
5744 self.placeholder_text.as_ref()
5745 }
5746
5747 pub fn scroll_position(&self) -> Vector2F {
5748 compute_scroll_position(
5749 &self.display_snapshot,
5750 self.scroll_position,
5751 &self.scroll_top_anchor,
5752 )
5753 }
5754}
5755
5756impl Deref for EditorSnapshot {
5757 type Target = DisplaySnapshot;
5758
5759 fn deref(&self) -> &Self::Target {
5760 &self.display_snapshot
5761 }
5762}
5763
5764fn compute_scroll_position(
5765 snapshot: &DisplaySnapshot,
5766 mut scroll_position: Vector2F,
5767 scroll_top_anchor: &Anchor,
5768) -> Vector2F {
5769 if *scroll_top_anchor != Anchor::min() {
5770 let scroll_top = scroll_top_anchor.to_display_point(snapshot).row() as f32;
5771 scroll_position.set_y(scroll_top + scroll_position.y());
5772 } else {
5773 scroll_position.set_y(0.);
5774 }
5775 scroll_position
5776}
5777
5778#[derive(Copy, Clone, Debug, PartialEq, Eq)]
5779pub enum Event {
5780 Activate,
5781 BufferEdited,
5782 Edited,
5783 Blurred,
5784 Dirtied,
5785 Saved,
5786 TitleChanged,
5787 SelectionsChanged { local: bool },
5788 ScrollPositionChanged { local: bool },
5789 Closed,
5790}
5791
5792pub struct EditorFocused(pub ViewHandle<Editor>);
5793pub struct EditorBlurred(pub ViewHandle<Editor>);
5794pub struct EditorReleased(pub WeakViewHandle<Editor>);
5795
5796impl Entity for Editor {
5797 type Event = Event;
5798
5799 fn release(&mut self, cx: &mut MutableAppContext) {
5800 cx.emit_global(EditorReleased(self.handle.clone()));
5801 }
5802}
5803
5804impl View for Editor {
5805 fn render(&mut self, cx: &mut RenderContext<Self>) -> ElementBox {
5806 let style = self.style(cx);
5807 self.display_map.update(cx, |map, cx| {
5808 map.set_font(style.text.font_id, style.text.font_size, cx)
5809 });
5810 EditorElement::new(self.handle.clone(), style.clone(), self.cursor_shape).boxed()
5811 }
5812
5813 fn ui_name() -> &'static str {
5814 "Editor"
5815 }
5816
5817 fn on_focus(&mut self, cx: &mut ViewContext<Self>) {
5818 let focused_event = EditorFocused(cx.handle());
5819 cx.emit_global(focused_event);
5820 if let Some(rename) = self.pending_rename.as_ref() {
5821 cx.focus(&rename.editor);
5822 } else {
5823 self.focused = true;
5824 self.blink_cursors(self.blink_epoch, cx);
5825 self.buffer.update(cx, |buffer, cx| {
5826 buffer.finalize_last_transaction(cx);
5827 if self.leader_replica_id.is_none() {
5828 buffer.set_active_selections(&self.selections, cx);
5829 }
5830 });
5831 }
5832 }
5833
5834 fn on_blur(&mut self, cx: &mut ViewContext<Self>) {
5835 let blurred_event = EditorBlurred(cx.handle());
5836 cx.emit_global(blurred_event);
5837 self.focused = false;
5838 self.buffer
5839 .update(cx, |buffer, cx| buffer.remove_active_selections(cx));
5840 self.hide_context_menu(cx);
5841 cx.emit(Event::Blurred);
5842 cx.notify();
5843 }
5844
5845 fn keymap_context(&self, _: &AppContext) -> gpui::keymap::Context {
5846 let mut cx = Self::default_keymap_context();
5847 let mode = match self.mode {
5848 EditorMode::SingleLine => "single_line",
5849 EditorMode::AutoHeight { .. } => "auto_height",
5850 EditorMode::Full => "full",
5851 };
5852 cx.map.insert("mode".into(), mode.into());
5853 if self.pending_rename.is_some() {
5854 cx.set.insert("renaming".into());
5855 }
5856 match self.context_menu.as_ref() {
5857 Some(ContextMenu::Completions(_)) => {
5858 cx.set.insert("showing_completions".into());
5859 }
5860 Some(ContextMenu::CodeActions(_)) => {
5861 cx.set.insert("showing_code_actions".into());
5862 }
5863 None => {}
5864 }
5865 cx
5866 }
5867}
5868
5869fn build_style(
5870 settings: &Settings,
5871 get_field_editor_theme: Option<GetFieldEditorTheme>,
5872 override_text_style: Option<&OverrideTextStyle>,
5873 cx: &AppContext,
5874) -> EditorStyle {
5875 let font_cache = cx.font_cache();
5876
5877 let mut theme = settings.theme.editor.clone();
5878 let mut style = if let Some(get_field_editor_theme) = get_field_editor_theme {
5879 let field_editor_theme = get_field_editor_theme(&settings.theme);
5880 theme.text_color = field_editor_theme.text.color;
5881 theme.selection = field_editor_theme.selection;
5882 theme.background = field_editor_theme
5883 .container
5884 .background_color
5885 .unwrap_or_default();
5886 EditorStyle {
5887 text: field_editor_theme.text,
5888 placeholder_text: field_editor_theme.placeholder_text,
5889 theme,
5890 }
5891 } else {
5892 let font_family_id = settings.buffer_font_family;
5893 let font_family_name = cx.font_cache().family_name(font_family_id).unwrap();
5894 let font_properties = Default::default();
5895 let font_id = font_cache
5896 .select_font(font_family_id, &font_properties)
5897 .unwrap();
5898 let font_size = settings.buffer_font_size;
5899 EditorStyle {
5900 text: TextStyle {
5901 color: settings.theme.editor.text_color,
5902 font_family_name,
5903 font_family_id,
5904 font_id,
5905 font_size,
5906 font_properties,
5907 underline: Default::default(),
5908 },
5909 placeholder_text: None,
5910 theme,
5911 }
5912 };
5913
5914 if let Some(highlight_style) = override_text_style.and_then(|build_style| build_style(&style)) {
5915 if let Some(highlighted) = style
5916 .text
5917 .clone()
5918 .highlight(highlight_style, font_cache)
5919 .log_err()
5920 {
5921 style.text = highlighted;
5922 }
5923 }
5924
5925 style
5926}
5927
5928trait SelectionExt {
5929 fn offset_range(&self, buffer: &MultiBufferSnapshot) -> Range<usize>;
5930 fn point_range(&self, buffer: &MultiBufferSnapshot) -> Range<Point>;
5931 fn display_range(&self, map: &DisplaySnapshot) -> Range<DisplayPoint>;
5932 fn spanned_rows(&self, include_end_if_at_line_start: bool, map: &DisplaySnapshot)
5933 -> Range<u32>;
5934}
5935
5936impl<T: ToPoint + ToOffset> SelectionExt for Selection<T> {
5937 fn point_range(&self, buffer: &MultiBufferSnapshot) -> Range<Point> {
5938 let start = self.start.to_point(buffer);
5939 let end = self.end.to_point(buffer);
5940 if self.reversed {
5941 end..start
5942 } else {
5943 start..end
5944 }
5945 }
5946
5947 fn offset_range(&self, buffer: &MultiBufferSnapshot) -> Range<usize> {
5948 let start = self.start.to_offset(buffer);
5949 let end = self.end.to_offset(buffer);
5950 if self.reversed {
5951 end..start
5952 } else {
5953 start..end
5954 }
5955 }
5956
5957 fn display_range(&self, map: &DisplaySnapshot) -> Range<DisplayPoint> {
5958 let start = self
5959 .start
5960 .to_point(&map.buffer_snapshot)
5961 .to_display_point(map);
5962 let end = self
5963 .end
5964 .to_point(&map.buffer_snapshot)
5965 .to_display_point(map);
5966 if self.reversed {
5967 end..start
5968 } else {
5969 start..end
5970 }
5971 }
5972
5973 fn spanned_rows(
5974 &self,
5975 include_end_if_at_line_start: bool,
5976 map: &DisplaySnapshot,
5977 ) -> Range<u32> {
5978 let start = self.start.to_point(&map.buffer_snapshot);
5979 let mut end = self.end.to_point(&map.buffer_snapshot);
5980 if !include_end_if_at_line_start && start.row != end.row && end.column == 0 {
5981 end.row -= 1;
5982 }
5983
5984 let buffer_start = map.prev_line_boundary(start).0;
5985 let buffer_end = map.next_line_boundary(end).0;
5986 buffer_start.row..buffer_end.row + 1
5987 }
5988}
5989
5990impl<T: InvalidationRegion> InvalidationStack<T> {
5991 fn invalidate<S>(&mut self, selections: &[Selection<S>], buffer: &MultiBufferSnapshot)
5992 where
5993 S: Clone + ToOffset,
5994 {
5995 while let Some(region) = self.last() {
5996 let all_selections_inside_invalidation_ranges =
5997 if selections.len() == region.ranges().len() {
5998 selections
5999 .iter()
6000 .zip(region.ranges().iter().map(|r| r.to_offset(&buffer)))
6001 .all(|(selection, invalidation_range)| {
6002 let head = selection.head().to_offset(&buffer);
6003 invalidation_range.start <= head && invalidation_range.end >= head
6004 })
6005 } else {
6006 false
6007 };
6008
6009 if all_selections_inside_invalidation_ranges {
6010 break;
6011 } else {
6012 self.pop();
6013 }
6014 }
6015 }
6016}
6017
6018impl<T> Default for InvalidationStack<T> {
6019 fn default() -> Self {
6020 Self(Default::default())
6021 }
6022}
6023
6024impl<T> Deref for InvalidationStack<T> {
6025 type Target = Vec<T>;
6026
6027 fn deref(&self) -> &Self::Target {
6028 &self.0
6029 }
6030}
6031
6032impl<T> DerefMut for InvalidationStack<T> {
6033 fn deref_mut(&mut self) -> &mut Self::Target {
6034 &mut self.0
6035 }
6036}
6037
6038impl InvalidationRegion for BracketPairState {
6039 fn ranges(&self) -> &[Range<Anchor>] {
6040 &self.ranges
6041 }
6042}
6043
6044impl InvalidationRegion for SnippetState {
6045 fn ranges(&self) -> &[Range<Anchor>] {
6046 &self.ranges[self.active_index]
6047 }
6048}
6049
6050impl Deref for EditorStyle {
6051 type Target = theme::Editor;
6052
6053 fn deref(&self) -> &Self::Target {
6054 &self.theme
6055 }
6056}
6057
6058pub fn diagnostic_block_renderer(diagnostic: Diagnostic, is_valid: bool) -> RenderBlock {
6059 let mut highlighted_lines = Vec::new();
6060 for line in diagnostic.message.lines() {
6061 highlighted_lines.push(highlight_diagnostic_message(line));
6062 }
6063
6064 Arc::new(move |cx: &BlockContext| {
6065 let settings = cx.global::<Settings>();
6066 let theme = &settings.theme.editor;
6067 let style = diagnostic_style(diagnostic.severity, is_valid, theme);
6068 let font_size = (style.text_scale_factor * settings.buffer_font_size).round();
6069 Flex::column()
6070 .with_children(highlighted_lines.iter().map(|(line, highlights)| {
6071 Label::new(
6072 line.clone(),
6073 style.message.clone().with_font_size(font_size),
6074 )
6075 .with_highlights(highlights.clone())
6076 .contained()
6077 .with_margin_left(cx.anchor_x)
6078 .boxed()
6079 }))
6080 .aligned()
6081 .left()
6082 .boxed()
6083 })
6084}
6085
6086pub fn highlight_diagnostic_message(message: &str) -> (String, Vec<usize>) {
6087 let mut message_without_backticks = String::new();
6088 let mut prev_offset = 0;
6089 let mut inside_block = false;
6090 let mut highlights = Vec::new();
6091 for (match_ix, (offset, _)) in message
6092 .match_indices('`')
6093 .chain([(message.len(), "")])
6094 .enumerate()
6095 {
6096 message_without_backticks.push_str(&message[prev_offset..offset]);
6097 if inside_block {
6098 highlights.extend(prev_offset - match_ix..offset - match_ix);
6099 }
6100
6101 inside_block = !inside_block;
6102 prev_offset = offset + 1;
6103 }
6104
6105 (message_without_backticks, highlights)
6106}
6107
6108pub fn diagnostic_style(
6109 severity: DiagnosticSeverity,
6110 valid: bool,
6111 theme: &theme::Editor,
6112) -> DiagnosticStyle {
6113 match (severity, valid) {
6114 (DiagnosticSeverity::ERROR, true) => theme.error_diagnostic.clone(),
6115 (DiagnosticSeverity::ERROR, false) => theme.invalid_error_diagnostic.clone(),
6116 (DiagnosticSeverity::WARNING, true) => theme.warning_diagnostic.clone(),
6117 (DiagnosticSeverity::WARNING, false) => theme.invalid_warning_diagnostic.clone(),
6118 (DiagnosticSeverity::INFORMATION, true) => theme.information_diagnostic.clone(),
6119 (DiagnosticSeverity::INFORMATION, false) => theme.invalid_information_diagnostic.clone(),
6120 (DiagnosticSeverity::HINT, true) => theme.hint_diagnostic.clone(),
6121 (DiagnosticSeverity::HINT, false) => theme.invalid_hint_diagnostic.clone(),
6122 _ => theme.invalid_hint_diagnostic.clone(),
6123 }
6124}
6125
6126pub fn combine_syntax_and_fuzzy_match_highlights(
6127 text: &str,
6128 default_style: HighlightStyle,
6129 syntax_ranges: impl Iterator<Item = (Range<usize>, HighlightStyle)>,
6130 match_indices: &[usize],
6131) -> Vec<(Range<usize>, HighlightStyle)> {
6132 let mut result = Vec::new();
6133 let mut match_indices = match_indices.iter().copied().peekable();
6134
6135 for (range, mut syntax_highlight) in syntax_ranges.chain([(usize::MAX..0, Default::default())])
6136 {
6137 syntax_highlight.weight = None;
6138
6139 // Add highlights for any fuzzy match characters before the next
6140 // syntax highlight range.
6141 while let Some(&match_index) = match_indices.peek() {
6142 if match_index >= range.start {
6143 break;
6144 }
6145 match_indices.next();
6146 let end_index = char_ix_after(match_index, text);
6147 let mut match_style = default_style;
6148 match_style.weight = Some(fonts::Weight::BOLD);
6149 result.push((match_index..end_index, match_style));
6150 }
6151
6152 if range.start == usize::MAX {
6153 break;
6154 }
6155
6156 // Add highlights for any fuzzy match characters within the
6157 // syntax highlight range.
6158 let mut offset = range.start;
6159 while let Some(&match_index) = match_indices.peek() {
6160 if match_index >= range.end {
6161 break;
6162 }
6163
6164 match_indices.next();
6165 if match_index > offset {
6166 result.push((offset..match_index, syntax_highlight));
6167 }
6168
6169 let mut end_index = char_ix_after(match_index, text);
6170 while let Some(&next_match_index) = match_indices.peek() {
6171 if next_match_index == end_index && next_match_index < range.end {
6172 end_index = char_ix_after(next_match_index, text);
6173 match_indices.next();
6174 } else {
6175 break;
6176 }
6177 }
6178
6179 let mut match_style = syntax_highlight;
6180 match_style.weight = Some(fonts::Weight::BOLD);
6181 result.push((match_index..end_index, match_style));
6182 offset = end_index;
6183 }
6184
6185 if offset < range.end {
6186 result.push((offset..range.end, syntax_highlight));
6187 }
6188 }
6189
6190 fn char_ix_after(ix: usize, text: &str) -> usize {
6191 ix + text[ix..].chars().next().unwrap().len_utf8()
6192 }
6193
6194 result
6195}
6196
6197pub fn styled_runs_for_code_label<'a>(
6198 label: &'a CodeLabel,
6199 syntax_theme: &'a theme::SyntaxTheme,
6200) -> impl 'a + Iterator<Item = (Range<usize>, HighlightStyle)> {
6201 let fade_out = HighlightStyle {
6202 fade_out: Some(0.35),
6203 ..Default::default()
6204 };
6205
6206 let mut prev_end = label.filter_range.end;
6207 label
6208 .runs
6209 .iter()
6210 .enumerate()
6211 .flat_map(move |(ix, (range, highlight_id))| {
6212 let style = if let Some(style) = highlight_id.style(syntax_theme) {
6213 style
6214 } else {
6215 return Default::default();
6216 };
6217 let mut muted_style = style.clone();
6218 muted_style.highlight(fade_out);
6219
6220 let mut runs = SmallVec::<[(Range<usize>, HighlightStyle); 3]>::new();
6221 if range.start >= label.filter_range.end {
6222 if range.start > prev_end {
6223 runs.push((prev_end..range.start, fade_out));
6224 }
6225 runs.push((range.clone(), muted_style));
6226 } else if range.end <= label.filter_range.end {
6227 runs.push((range.clone(), style));
6228 } else {
6229 runs.push((range.start..label.filter_range.end, style));
6230 runs.push((label.filter_range.end..range.end, muted_style));
6231 }
6232 prev_end = cmp::max(prev_end, range.end);
6233
6234 if ix + 1 == label.runs.len() && label.text.len() > prev_end {
6235 runs.push((prev_end..label.text.len(), fade_out));
6236 }
6237
6238 runs
6239 })
6240}
6241
6242#[cfg(test)]
6243mod tests {
6244 use crate::test::marked_text_by;
6245
6246 use super::*;
6247 use gpui::{
6248 geometry::rect::RectF,
6249 platform::{WindowBounds, WindowOptions},
6250 };
6251 use language::{LanguageConfig, LanguageServerConfig};
6252 use lsp::FakeLanguageServer;
6253 use project::FakeFs;
6254 use smol::stream::StreamExt;
6255 use std::{cell::RefCell, rc::Rc, time::Instant};
6256 use text::Point;
6257 use unindent::Unindent;
6258 use util::test::sample_text;
6259 use workspace::FollowableItem;
6260
6261 #[gpui::test]
6262 fn test_edit_events(cx: &mut MutableAppContext) {
6263 populate_settings(cx);
6264 let buffer = cx.add_model(|cx| language::Buffer::new(0, "123456", cx));
6265
6266 let events = Rc::new(RefCell::new(Vec::new()));
6267 let (_, editor1) = cx.add_window(Default::default(), {
6268 let events = events.clone();
6269 |cx| {
6270 cx.subscribe(&cx.handle(), move |_, _, event, _| {
6271 if matches!(event, Event::Edited | Event::BufferEdited | Event::Dirtied) {
6272 events.borrow_mut().push(("editor1", *event));
6273 }
6274 })
6275 .detach();
6276 Editor::for_buffer(buffer.clone(), None, cx)
6277 }
6278 });
6279 let (_, editor2) = cx.add_window(Default::default(), {
6280 let events = events.clone();
6281 |cx| {
6282 cx.subscribe(&cx.handle(), move |_, _, event, _| {
6283 if matches!(event, Event::Edited | Event::BufferEdited | Event::Dirtied) {
6284 events.borrow_mut().push(("editor2", *event));
6285 }
6286 })
6287 .detach();
6288 Editor::for_buffer(buffer.clone(), None, cx)
6289 }
6290 });
6291 assert_eq!(mem::take(&mut *events.borrow_mut()), []);
6292
6293 // Mutating editor 1 will emit an `Edited` event only for that editor.
6294 editor1.update(cx, |editor, cx| editor.insert("X", cx));
6295 assert_eq!(
6296 mem::take(&mut *events.borrow_mut()),
6297 [
6298 ("editor1", Event::Edited),
6299 ("editor1", Event::BufferEdited),
6300 ("editor2", Event::BufferEdited),
6301 ("editor1", Event::Dirtied),
6302 ("editor2", Event::Dirtied)
6303 ]
6304 );
6305
6306 // Mutating editor 2 will emit an `Edited` event only for that editor.
6307 editor2.update(cx, |editor, cx| editor.delete(&Delete, cx));
6308 assert_eq!(
6309 mem::take(&mut *events.borrow_mut()),
6310 [
6311 ("editor2", Event::Edited),
6312 ("editor1", Event::BufferEdited),
6313 ("editor2", Event::BufferEdited),
6314 ]
6315 );
6316
6317 // Undoing on editor 1 will emit an `Edited` event only for that editor.
6318 editor1.update(cx, |editor, cx| editor.undo(&Undo, cx));
6319 assert_eq!(
6320 mem::take(&mut *events.borrow_mut()),
6321 [
6322 ("editor1", Event::Edited),
6323 ("editor1", Event::BufferEdited),
6324 ("editor2", Event::BufferEdited),
6325 ]
6326 );
6327
6328 // Redoing on editor 1 will emit an `Edited` event only for that editor.
6329 editor1.update(cx, |editor, cx| editor.redo(&Redo, cx));
6330 assert_eq!(
6331 mem::take(&mut *events.borrow_mut()),
6332 [
6333 ("editor1", Event::Edited),
6334 ("editor1", Event::BufferEdited),
6335 ("editor2", Event::BufferEdited),
6336 ]
6337 );
6338
6339 // Undoing on editor 2 will emit an `Edited` event only for that editor.
6340 editor2.update(cx, |editor, cx| editor.undo(&Undo, cx));
6341 assert_eq!(
6342 mem::take(&mut *events.borrow_mut()),
6343 [
6344 ("editor2", Event::Edited),
6345 ("editor1", Event::BufferEdited),
6346 ("editor2", Event::BufferEdited),
6347 ]
6348 );
6349
6350 // Redoing on editor 2 will emit an `Edited` event only for that editor.
6351 editor2.update(cx, |editor, cx| editor.redo(&Redo, cx));
6352 assert_eq!(
6353 mem::take(&mut *events.borrow_mut()),
6354 [
6355 ("editor2", Event::Edited),
6356 ("editor1", Event::BufferEdited),
6357 ("editor2", Event::BufferEdited),
6358 ]
6359 );
6360
6361 // No event is emitted when the mutation is a no-op.
6362 editor2.update(cx, |editor, cx| {
6363 editor.select_ranges([0..0], None, cx);
6364 editor.backspace(&Backspace, cx);
6365 });
6366 assert_eq!(mem::take(&mut *events.borrow_mut()), []);
6367 }
6368
6369 #[gpui::test]
6370 fn test_undo_redo_with_selection_restoration(cx: &mut MutableAppContext) {
6371 populate_settings(cx);
6372 let mut now = Instant::now();
6373 let buffer = cx.add_model(|cx| language::Buffer::new(0, "123456", cx));
6374 let group_interval = buffer.read(cx).transaction_group_interval();
6375 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
6376 let (_, editor) = cx.add_window(Default::default(), |cx| build_editor(buffer.clone(), cx));
6377
6378 editor.update(cx, |editor, cx| {
6379 editor.start_transaction_at(now, cx);
6380 editor.select_ranges([2..4], None, cx);
6381 editor.insert("cd", cx);
6382 editor.end_transaction_at(now, cx);
6383 assert_eq!(editor.text(cx), "12cd56");
6384 assert_eq!(editor.selected_ranges(cx), vec![4..4]);
6385
6386 editor.start_transaction_at(now, cx);
6387 editor.select_ranges([4..5], None, cx);
6388 editor.insert("e", cx);
6389 editor.end_transaction_at(now, cx);
6390 assert_eq!(editor.text(cx), "12cde6");
6391 assert_eq!(editor.selected_ranges(cx), vec![5..5]);
6392
6393 now += group_interval + Duration::from_millis(1);
6394 editor.select_ranges([2..2], None, cx);
6395
6396 // Simulate an edit in another editor
6397 buffer.update(cx, |buffer, cx| {
6398 buffer.start_transaction_at(now, cx);
6399 buffer.edit([0..1], "a", cx);
6400 buffer.edit([1..1], "b", cx);
6401 buffer.end_transaction_at(now, cx);
6402 });
6403
6404 assert_eq!(editor.text(cx), "ab2cde6");
6405 assert_eq!(editor.selected_ranges(cx), vec![3..3]);
6406
6407 // Last transaction happened past the group interval in a different editor.
6408 // Undo it individually and don't restore selections.
6409 editor.undo(&Undo, cx);
6410 assert_eq!(editor.text(cx), "12cde6");
6411 assert_eq!(editor.selected_ranges(cx), vec![2..2]);
6412
6413 // First two transactions happened within the group interval in this editor.
6414 // Undo them together and restore selections.
6415 editor.undo(&Undo, cx);
6416 editor.undo(&Undo, cx); // Undo stack is empty here, so this is a no-op.
6417 assert_eq!(editor.text(cx), "123456");
6418 assert_eq!(editor.selected_ranges(cx), vec![0..0]);
6419
6420 // Redo the first two transactions together.
6421 editor.redo(&Redo, cx);
6422 assert_eq!(editor.text(cx), "12cde6");
6423 assert_eq!(editor.selected_ranges(cx), vec![5..5]);
6424
6425 // Redo the last transaction on its own.
6426 editor.redo(&Redo, cx);
6427 assert_eq!(editor.text(cx), "ab2cde6");
6428 assert_eq!(editor.selected_ranges(cx), vec![6..6]);
6429
6430 // Test empty transactions.
6431 editor.start_transaction_at(now, cx);
6432 editor.end_transaction_at(now, cx);
6433 editor.undo(&Undo, cx);
6434 assert_eq!(editor.text(cx), "12cde6");
6435 });
6436 }
6437
6438 #[gpui::test]
6439 fn test_selection_with_mouse(cx: &mut gpui::MutableAppContext) {
6440 populate_settings(cx);
6441
6442 let buffer = MultiBuffer::build_simple("aaaaaa\nbbbbbb\ncccccc\nddddddd\n", cx);
6443 let (_, editor) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
6444 editor.update(cx, |view, cx| {
6445 view.begin_selection(DisplayPoint::new(2, 2), false, 1, cx);
6446 });
6447 assert_eq!(
6448 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
6449 [DisplayPoint::new(2, 2)..DisplayPoint::new(2, 2)]
6450 );
6451
6452 editor.update(cx, |view, cx| {
6453 view.update_selection(DisplayPoint::new(3, 3), 0, Vector2F::zero(), cx);
6454 });
6455
6456 assert_eq!(
6457 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
6458 [DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3)]
6459 );
6460
6461 editor.update(cx, |view, cx| {
6462 view.update_selection(DisplayPoint::new(1, 1), 0, Vector2F::zero(), cx);
6463 });
6464
6465 assert_eq!(
6466 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
6467 [DisplayPoint::new(2, 2)..DisplayPoint::new(1, 1)]
6468 );
6469
6470 editor.update(cx, |view, cx| {
6471 view.end_selection(cx);
6472 view.update_selection(DisplayPoint::new(3, 3), 0, Vector2F::zero(), cx);
6473 });
6474
6475 assert_eq!(
6476 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
6477 [DisplayPoint::new(2, 2)..DisplayPoint::new(1, 1)]
6478 );
6479
6480 editor.update(cx, |view, cx| {
6481 view.begin_selection(DisplayPoint::new(3, 3), true, 1, cx);
6482 view.update_selection(DisplayPoint::new(0, 0), 0, Vector2F::zero(), cx);
6483 });
6484
6485 assert_eq!(
6486 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
6487 [
6488 DisplayPoint::new(2, 2)..DisplayPoint::new(1, 1),
6489 DisplayPoint::new(3, 3)..DisplayPoint::new(0, 0)
6490 ]
6491 );
6492
6493 editor.update(cx, |view, cx| {
6494 view.end_selection(cx);
6495 });
6496
6497 assert_eq!(
6498 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
6499 [DisplayPoint::new(3, 3)..DisplayPoint::new(0, 0)]
6500 );
6501 }
6502
6503 #[gpui::test]
6504 fn test_canceling_pending_selection(cx: &mut gpui::MutableAppContext) {
6505 populate_settings(cx);
6506 let buffer = MultiBuffer::build_simple("aaaaaa\nbbbbbb\ncccccc\ndddddd\n", cx);
6507 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
6508
6509 view.update(cx, |view, cx| {
6510 view.begin_selection(DisplayPoint::new(2, 2), false, 1, cx);
6511 assert_eq!(
6512 view.selected_display_ranges(cx),
6513 [DisplayPoint::new(2, 2)..DisplayPoint::new(2, 2)]
6514 );
6515 });
6516
6517 view.update(cx, |view, cx| {
6518 view.update_selection(DisplayPoint::new(3, 3), 0, Vector2F::zero(), cx);
6519 assert_eq!(
6520 view.selected_display_ranges(cx),
6521 [DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3)]
6522 );
6523 });
6524
6525 view.update(cx, |view, cx| {
6526 view.cancel(&Cancel, cx);
6527 view.update_selection(DisplayPoint::new(1, 1), 0, Vector2F::zero(), cx);
6528 assert_eq!(
6529 view.selected_display_ranges(cx),
6530 [DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3)]
6531 );
6532 });
6533 }
6534
6535 #[gpui::test]
6536 fn test_navigation_history(cx: &mut gpui::MutableAppContext) {
6537 populate_settings(cx);
6538 use workspace::Item;
6539 let nav_history = Rc::new(RefCell::new(workspace::NavHistory::default()));
6540 let buffer = MultiBuffer::build_simple(&sample_text(30, 5, 'a'), cx);
6541
6542 cx.add_window(Default::default(), |cx| {
6543 let mut editor = build_editor(buffer.clone(), cx);
6544 editor.nav_history = Some(ItemNavHistory::new(nav_history.clone(), &cx.handle()));
6545
6546 // Move the cursor a small distance.
6547 // Nothing is added to the navigation history.
6548 editor.select_display_ranges(&[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)], cx);
6549 editor.select_display_ranges(&[DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0)], cx);
6550 assert!(nav_history.borrow_mut().pop_backward().is_none());
6551
6552 // Move the cursor a large distance.
6553 // The history can jump back to the previous position.
6554 editor.select_display_ranges(&[DisplayPoint::new(13, 0)..DisplayPoint::new(13, 3)], cx);
6555 let nav_entry = nav_history.borrow_mut().pop_backward().unwrap();
6556 editor.navigate(nav_entry.data.unwrap(), cx);
6557 assert_eq!(nav_entry.item.id(), cx.view_id());
6558 assert_eq!(
6559 editor.selected_display_ranges(cx),
6560 &[DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0)]
6561 );
6562 assert!(nav_history.borrow_mut().pop_backward().is_none());
6563
6564 // Move the cursor a small distance via the mouse.
6565 // Nothing is added to the navigation history.
6566 editor.begin_selection(DisplayPoint::new(5, 0), false, 1, cx);
6567 editor.end_selection(cx);
6568 assert_eq!(
6569 editor.selected_display_ranges(cx),
6570 &[DisplayPoint::new(5, 0)..DisplayPoint::new(5, 0)]
6571 );
6572 assert!(nav_history.borrow_mut().pop_backward().is_none());
6573
6574 // Move the cursor a large distance via the mouse.
6575 // The history can jump back to the previous position.
6576 editor.begin_selection(DisplayPoint::new(15, 0), false, 1, cx);
6577 editor.end_selection(cx);
6578 assert_eq!(
6579 editor.selected_display_ranges(cx),
6580 &[DisplayPoint::new(15, 0)..DisplayPoint::new(15, 0)]
6581 );
6582 let nav_entry = nav_history.borrow_mut().pop_backward().unwrap();
6583 editor.navigate(nav_entry.data.unwrap(), cx);
6584 assert_eq!(nav_entry.item.id(), cx.view_id());
6585 assert_eq!(
6586 editor.selected_display_ranges(cx),
6587 &[DisplayPoint::new(5, 0)..DisplayPoint::new(5, 0)]
6588 );
6589 assert!(nav_history.borrow_mut().pop_backward().is_none());
6590
6591 editor
6592 });
6593 }
6594
6595 #[gpui::test]
6596 fn test_cancel(cx: &mut gpui::MutableAppContext) {
6597 populate_settings(cx);
6598 let buffer = MultiBuffer::build_simple("aaaaaa\nbbbbbb\ncccccc\ndddddd\n", cx);
6599 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
6600
6601 view.update(cx, |view, cx| {
6602 view.begin_selection(DisplayPoint::new(3, 4), false, 1, cx);
6603 view.update_selection(DisplayPoint::new(1, 1), 0, Vector2F::zero(), cx);
6604 view.end_selection(cx);
6605
6606 view.begin_selection(DisplayPoint::new(0, 1), true, 1, cx);
6607 view.update_selection(DisplayPoint::new(0, 3), 0, Vector2F::zero(), cx);
6608 view.end_selection(cx);
6609 assert_eq!(
6610 view.selected_display_ranges(cx),
6611 [
6612 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
6613 DisplayPoint::new(3, 4)..DisplayPoint::new(1, 1),
6614 ]
6615 );
6616 });
6617
6618 view.update(cx, |view, cx| {
6619 view.cancel(&Cancel, cx);
6620 assert_eq!(
6621 view.selected_display_ranges(cx),
6622 [DisplayPoint::new(3, 4)..DisplayPoint::new(1, 1)]
6623 );
6624 });
6625
6626 view.update(cx, |view, cx| {
6627 view.cancel(&Cancel, cx);
6628 assert_eq!(
6629 view.selected_display_ranges(cx),
6630 [DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1)]
6631 );
6632 });
6633 }
6634
6635 #[gpui::test]
6636 fn test_fold(cx: &mut gpui::MutableAppContext) {
6637 populate_settings(cx);
6638 let buffer = MultiBuffer::build_simple(
6639 &"
6640 impl Foo {
6641 // Hello!
6642
6643 fn a() {
6644 1
6645 }
6646
6647 fn b() {
6648 2
6649 }
6650
6651 fn c() {
6652 3
6653 }
6654 }
6655 "
6656 .unindent(),
6657 cx,
6658 );
6659 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer.clone(), cx));
6660
6661 view.update(cx, |view, cx| {
6662 view.select_display_ranges(&[DisplayPoint::new(8, 0)..DisplayPoint::new(12, 0)], cx);
6663 view.fold(&Fold, cx);
6664 assert_eq!(
6665 view.display_text(cx),
6666 "
6667 impl Foo {
6668 // Hello!
6669
6670 fn a() {
6671 1
6672 }
6673
6674 fn b() {…
6675 }
6676
6677 fn c() {…
6678 }
6679 }
6680 "
6681 .unindent(),
6682 );
6683
6684 view.fold(&Fold, cx);
6685 assert_eq!(
6686 view.display_text(cx),
6687 "
6688 impl Foo {…
6689 }
6690 "
6691 .unindent(),
6692 );
6693
6694 view.unfold_lines(&UnfoldLines, cx);
6695 assert_eq!(
6696 view.display_text(cx),
6697 "
6698 impl Foo {
6699 // Hello!
6700
6701 fn a() {
6702 1
6703 }
6704
6705 fn b() {…
6706 }
6707
6708 fn c() {…
6709 }
6710 }
6711 "
6712 .unindent(),
6713 );
6714
6715 view.unfold_lines(&UnfoldLines, cx);
6716 assert_eq!(view.display_text(cx), buffer.read(cx).read(cx).text());
6717 });
6718 }
6719
6720 #[gpui::test]
6721 fn test_move_cursor(cx: &mut gpui::MutableAppContext) {
6722 populate_settings(cx);
6723 let buffer = MultiBuffer::build_simple(&sample_text(6, 6, 'a'), cx);
6724 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer.clone(), cx));
6725
6726 buffer.update(cx, |buffer, cx| {
6727 buffer.edit(
6728 vec![
6729 Point::new(1, 0)..Point::new(1, 0),
6730 Point::new(1, 1)..Point::new(1, 1),
6731 ],
6732 "\t",
6733 cx,
6734 );
6735 });
6736
6737 view.update(cx, |view, cx| {
6738 assert_eq!(
6739 view.selected_display_ranges(cx),
6740 &[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)]
6741 );
6742
6743 view.move_down(&MoveDown, cx);
6744 assert_eq!(
6745 view.selected_display_ranges(cx),
6746 &[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)]
6747 );
6748
6749 view.move_right(&MoveRight, cx);
6750 assert_eq!(
6751 view.selected_display_ranges(cx),
6752 &[DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4)]
6753 );
6754
6755 view.move_left(&MoveLeft, cx);
6756 assert_eq!(
6757 view.selected_display_ranges(cx),
6758 &[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)]
6759 );
6760
6761 view.move_up(&MoveUp, cx);
6762 assert_eq!(
6763 view.selected_display_ranges(cx),
6764 &[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)]
6765 );
6766
6767 view.move_to_end(&MoveToEnd, cx);
6768 assert_eq!(
6769 view.selected_display_ranges(cx),
6770 &[DisplayPoint::new(5, 6)..DisplayPoint::new(5, 6)]
6771 );
6772
6773 view.move_to_beginning(&MoveToBeginning, cx);
6774 assert_eq!(
6775 view.selected_display_ranges(cx),
6776 &[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)]
6777 );
6778
6779 view.select_display_ranges(&[DisplayPoint::new(0, 1)..DisplayPoint::new(0, 2)], cx);
6780 view.select_to_beginning(&SelectToBeginning, cx);
6781 assert_eq!(
6782 view.selected_display_ranges(cx),
6783 &[DisplayPoint::new(0, 1)..DisplayPoint::new(0, 0)]
6784 );
6785
6786 view.select_to_end(&SelectToEnd, cx);
6787 assert_eq!(
6788 view.selected_display_ranges(cx),
6789 &[DisplayPoint::new(0, 1)..DisplayPoint::new(5, 6)]
6790 );
6791 });
6792 }
6793
6794 #[gpui::test]
6795 fn test_move_cursor_multibyte(cx: &mut gpui::MutableAppContext) {
6796 populate_settings(cx);
6797 let buffer = MultiBuffer::build_simple("ⓐⓑⓒⓓⓔ\nabcde\nαβγδε\n", cx);
6798 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer.clone(), cx));
6799
6800 assert_eq!('ⓐ'.len_utf8(), 3);
6801 assert_eq!('α'.len_utf8(), 2);
6802
6803 view.update(cx, |view, cx| {
6804 view.fold_ranges(
6805 vec![
6806 Point::new(0, 6)..Point::new(0, 12),
6807 Point::new(1, 2)..Point::new(1, 4),
6808 Point::new(2, 4)..Point::new(2, 8),
6809 ],
6810 cx,
6811 );
6812 assert_eq!(view.display_text(cx), "ⓐⓑ…ⓔ\nab…e\nαβ…ε\n");
6813
6814 view.move_right(&MoveRight, cx);
6815 assert_eq!(
6816 view.selected_display_ranges(cx),
6817 &[empty_range(0, "ⓐ".len())]
6818 );
6819 view.move_right(&MoveRight, cx);
6820 assert_eq!(
6821 view.selected_display_ranges(cx),
6822 &[empty_range(0, "ⓐⓑ".len())]
6823 );
6824 view.move_right(&MoveRight, cx);
6825 assert_eq!(
6826 view.selected_display_ranges(cx),
6827 &[empty_range(0, "ⓐⓑ…".len())]
6828 );
6829
6830 view.move_down(&MoveDown, cx);
6831 assert_eq!(
6832 view.selected_display_ranges(cx),
6833 &[empty_range(1, "ab…".len())]
6834 );
6835 view.move_left(&MoveLeft, cx);
6836 assert_eq!(
6837 view.selected_display_ranges(cx),
6838 &[empty_range(1, "ab".len())]
6839 );
6840 view.move_left(&MoveLeft, cx);
6841 assert_eq!(
6842 view.selected_display_ranges(cx),
6843 &[empty_range(1, "a".len())]
6844 );
6845
6846 view.move_down(&MoveDown, cx);
6847 assert_eq!(
6848 view.selected_display_ranges(cx),
6849 &[empty_range(2, "α".len())]
6850 );
6851 view.move_right(&MoveRight, cx);
6852 assert_eq!(
6853 view.selected_display_ranges(cx),
6854 &[empty_range(2, "αβ".len())]
6855 );
6856 view.move_right(&MoveRight, cx);
6857 assert_eq!(
6858 view.selected_display_ranges(cx),
6859 &[empty_range(2, "αβ…".len())]
6860 );
6861 view.move_right(&MoveRight, cx);
6862 assert_eq!(
6863 view.selected_display_ranges(cx),
6864 &[empty_range(2, "αβ…ε".len())]
6865 );
6866
6867 view.move_up(&MoveUp, cx);
6868 assert_eq!(
6869 view.selected_display_ranges(cx),
6870 &[empty_range(1, "ab…e".len())]
6871 );
6872 view.move_up(&MoveUp, cx);
6873 assert_eq!(
6874 view.selected_display_ranges(cx),
6875 &[empty_range(0, "ⓐⓑ…ⓔ".len())]
6876 );
6877 view.move_left(&MoveLeft, cx);
6878 assert_eq!(
6879 view.selected_display_ranges(cx),
6880 &[empty_range(0, "ⓐⓑ…".len())]
6881 );
6882 view.move_left(&MoveLeft, cx);
6883 assert_eq!(
6884 view.selected_display_ranges(cx),
6885 &[empty_range(0, "ⓐⓑ".len())]
6886 );
6887 view.move_left(&MoveLeft, cx);
6888 assert_eq!(
6889 view.selected_display_ranges(cx),
6890 &[empty_range(0, "ⓐ".len())]
6891 );
6892 });
6893 }
6894
6895 #[gpui::test]
6896 fn test_move_cursor_different_line_lengths(cx: &mut gpui::MutableAppContext) {
6897 populate_settings(cx);
6898 let buffer = MultiBuffer::build_simple("ⓐⓑⓒⓓⓔ\nabcd\nαβγ\nabcd\nⓐⓑⓒⓓⓔ\n", cx);
6899 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer.clone(), cx));
6900 view.update(cx, |view, cx| {
6901 view.select_display_ranges(&[empty_range(0, "ⓐⓑⓒⓓⓔ".len())], cx);
6902 view.move_down(&MoveDown, cx);
6903 assert_eq!(
6904 view.selected_display_ranges(cx),
6905 &[empty_range(1, "abcd".len())]
6906 );
6907
6908 view.move_down(&MoveDown, cx);
6909 assert_eq!(
6910 view.selected_display_ranges(cx),
6911 &[empty_range(2, "αβγ".len())]
6912 );
6913
6914 view.move_down(&MoveDown, cx);
6915 assert_eq!(
6916 view.selected_display_ranges(cx),
6917 &[empty_range(3, "abcd".len())]
6918 );
6919
6920 view.move_down(&MoveDown, cx);
6921 assert_eq!(
6922 view.selected_display_ranges(cx),
6923 &[empty_range(4, "ⓐⓑⓒⓓⓔ".len())]
6924 );
6925
6926 view.move_up(&MoveUp, cx);
6927 assert_eq!(
6928 view.selected_display_ranges(cx),
6929 &[empty_range(3, "abcd".len())]
6930 );
6931
6932 view.move_up(&MoveUp, cx);
6933 assert_eq!(
6934 view.selected_display_ranges(cx),
6935 &[empty_range(2, "αβγ".len())]
6936 );
6937 });
6938 }
6939
6940 #[gpui::test]
6941 fn test_beginning_end_of_line(cx: &mut gpui::MutableAppContext) {
6942 populate_settings(cx);
6943 let buffer = MultiBuffer::build_simple("abc\n def", cx);
6944 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
6945 view.update(cx, |view, cx| {
6946 view.select_display_ranges(
6947 &[
6948 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
6949 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4),
6950 ],
6951 cx,
6952 );
6953 });
6954
6955 view.update(cx, |view, cx| {
6956 view.move_to_beginning_of_line(&MoveToBeginningOfLine, cx);
6957 assert_eq!(
6958 view.selected_display_ranges(cx),
6959 &[
6960 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
6961 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
6962 ]
6963 );
6964 });
6965
6966 view.update(cx, |view, cx| {
6967 view.move_to_beginning_of_line(&MoveToBeginningOfLine, cx);
6968 assert_eq!(
6969 view.selected_display_ranges(cx),
6970 &[
6971 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
6972 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
6973 ]
6974 );
6975 });
6976
6977 view.update(cx, |view, cx| {
6978 view.move_to_beginning_of_line(&MoveToBeginningOfLine, cx);
6979 assert_eq!(
6980 view.selected_display_ranges(cx),
6981 &[
6982 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
6983 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
6984 ]
6985 );
6986 });
6987
6988 view.update(cx, |view, cx| {
6989 view.move_to_end_of_line(&MoveToEndOfLine, cx);
6990 assert_eq!(
6991 view.selected_display_ranges(cx),
6992 &[
6993 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
6994 DisplayPoint::new(1, 5)..DisplayPoint::new(1, 5),
6995 ]
6996 );
6997 });
6998
6999 // Moving to the end of line again is a no-op.
7000 view.update(cx, |view, cx| {
7001 view.move_to_end_of_line(&MoveToEndOfLine, cx);
7002 assert_eq!(
7003 view.selected_display_ranges(cx),
7004 &[
7005 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
7006 DisplayPoint::new(1, 5)..DisplayPoint::new(1, 5),
7007 ]
7008 );
7009 });
7010
7011 view.update(cx, |view, cx| {
7012 view.move_left(&MoveLeft, cx);
7013 view.select_to_beginning_of_line(&SelectToBeginningOfLine(true), cx);
7014 assert_eq!(
7015 view.selected_display_ranges(cx),
7016 &[
7017 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 0),
7018 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 2),
7019 ]
7020 );
7021 });
7022
7023 view.update(cx, |view, cx| {
7024 view.select_to_beginning_of_line(&SelectToBeginningOfLine(true), cx);
7025 assert_eq!(
7026 view.selected_display_ranges(cx),
7027 &[
7028 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 0),
7029 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 0),
7030 ]
7031 );
7032 });
7033
7034 view.update(cx, |view, cx| {
7035 view.select_to_beginning_of_line(&SelectToBeginningOfLine(true), cx);
7036 assert_eq!(
7037 view.selected_display_ranges(cx),
7038 &[
7039 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 0),
7040 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 2),
7041 ]
7042 );
7043 });
7044
7045 view.update(cx, |view, cx| {
7046 view.select_to_end_of_line(&SelectToEndOfLine(true), cx);
7047 assert_eq!(
7048 view.selected_display_ranges(cx),
7049 &[
7050 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 3),
7051 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 5),
7052 ]
7053 );
7054 });
7055
7056 view.update(cx, |view, cx| {
7057 view.delete_to_end_of_line(&DeleteToEndOfLine, cx);
7058 assert_eq!(view.display_text(cx), "ab\n de");
7059 assert_eq!(
7060 view.selected_display_ranges(cx),
7061 &[
7062 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
7063 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4),
7064 ]
7065 );
7066 });
7067
7068 view.update(cx, |view, cx| {
7069 view.delete_to_beginning_of_line(&DeleteToBeginningOfLine, cx);
7070 assert_eq!(view.display_text(cx), "\n");
7071 assert_eq!(
7072 view.selected_display_ranges(cx),
7073 &[
7074 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
7075 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
7076 ]
7077 );
7078 });
7079 }
7080
7081 #[gpui::test]
7082 fn test_prev_next_word_boundary(cx: &mut gpui::MutableAppContext) {
7083 populate_settings(cx);
7084 let buffer = MultiBuffer::build_simple("use std::str::{foo, bar}\n\n {baz.qux()}", cx);
7085 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
7086 view.update(cx, |view, cx| {
7087 view.select_display_ranges(
7088 &[
7089 DisplayPoint::new(0, 11)..DisplayPoint::new(0, 11),
7090 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 4),
7091 ],
7092 cx,
7093 );
7094
7095 view.move_to_previous_word_start(&MoveToPreviousWordStart, cx);
7096 assert_selection_ranges(
7097 "use std::<>str::{foo, bar}\n\n {[]baz.qux()}",
7098 vec![('<', '>'), ('[', ']')],
7099 view,
7100 cx,
7101 );
7102
7103 view.move_to_previous_word_start(&MoveToPreviousWordStart, cx);
7104 assert_selection_ranges(
7105 "use std<>::str::{foo, bar}\n\n []{baz.qux()}",
7106 vec![('<', '>'), ('[', ']')],
7107 view,
7108 cx,
7109 );
7110
7111 view.move_to_previous_word_start(&MoveToPreviousWordStart, cx);
7112 assert_selection_ranges(
7113 "use <>std::str::{foo, bar}\n\n[] {baz.qux()}",
7114 vec![('<', '>'), ('[', ']')],
7115 view,
7116 cx,
7117 );
7118
7119 view.move_to_previous_word_start(&MoveToPreviousWordStart, cx);
7120 assert_selection_ranges(
7121 "<>use std::str::{foo, bar}\n[]\n {baz.qux()}",
7122 vec![('<', '>'), ('[', ']')],
7123 view,
7124 cx,
7125 );
7126
7127 view.move_to_previous_word_start(&MoveToPreviousWordStart, cx);
7128 assert_selection_ranges(
7129 "<>use std::str::{foo, bar[]}\n\n {baz.qux()}",
7130 vec![('<', '>'), ('[', ']')],
7131 view,
7132 cx,
7133 );
7134
7135 view.move_to_next_word_end(&MoveToNextWordEnd, cx);
7136 assert_selection_ranges(
7137 "use<> std::str::{foo, bar}[]\n\n {baz.qux()}",
7138 vec![('<', '>'), ('[', ']')],
7139 view,
7140 cx,
7141 );
7142
7143 view.move_to_next_word_end(&MoveToNextWordEnd, cx);
7144 assert_selection_ranges(
7145 "use std<>::str::{foo, bar}\n[]\n {baz.qux()}",
7146 vec![('<', '>'), ('[', ']')],
7147 view,
7148 cx,
7149 );
7150
7151 view.move_to_next_word_end(&MoveToNextWordEnd, cx);
7152 assert_selection_ranges(
7153 "use std::<>str::{foo, bar}\n\n {[]baz.qux()}",
7154 vec![('<', '>'), ('[', ']')],
7155 view,
7156 cx,
7157 );
7158
7159 view.move_right(&MoveRight, cx);
7160 view.select_to_previous_word_start(&SelectToPreviousWordStart, cx);
7161 assert_selection_ranges(
7162 "use std::>s<tr::{foo, bar}\n\n {]b[az.qux()}",
7163 vec![('<', '>'), ('[', ']')],
7164 view,
7165 cx,
7166 );
7167
7168 view.select_to_previous_word_start(&SelectToPreviousWordStart, cx);
7169 assert_selection_ranges(
7170 "use std>::s<tr::{foo, bar}\n\n ]{b[az.qux()}",
7171 vec![('<', '>'), ('[', ']')],
7172 view,
7173 cx,
7174 );
7175
7176 view.select_to_next_word_end(&SelectToNextWordEnd, cx);
7177 assert_selection_ranges(
7178 "use std::>s<tr::{foo, bar}\n\n {]b[az.qux()}",
7179 vec![('<', '>'), ('[', ']')],
7180 view,
7181 cx,
7182 );
7183 });
7184 }
7185
7186 #[gpui::test]
7187 fn test_prev_next_word_bounds_with_soft_wrap(cx: &mut gpui::MutableAppContext) {
7188 populate_settings(cx);
7189 let buffer = MultiBuffer::build_simple("use one::{\n two::three::four::five\n};", cx);
7190 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
7191
7192 view.update(cx, |view, cx| {
7193 view.set_wrap_width(Some(140.), cx);
7194 assert_eq!(
7195 view.display_text(cx),
7196 "use one::{\n two::three::\n four::five\n};"
7197 );
7198
7199 view.select_display_ranges(&[DisplayPoint::new(1, 7)..DisplayPoint::new(1, 7)], cx);
7200
7201 view.move_to_next_word_end(&MoveToNextWordEnd, cx);
7202 assert_eq!(
7203 view.selected_display_ranges(cx),
7204 &[DisplayPoint::new(1, 9)..DisplayPoint::new(1, 9)]
7205 );
7206
7207 view.move_to_next_word_end(&MoveToNextWordEnd, cx);
7208 assert_eq!(
7209 view.selected_display_ranges(cx),
7210 &[DisplayPoint::new(1, 14)..DisplayPoint::new(1, 14)]
7211 );
7212
7213 view.move_to_next_word_end(&MoveToNextWordEnd, cx);
7214 assert_eq!(
7215 view.selected_display_ranges(cx),
7216 &[DisplayPoint::new(2, 4)..DisplayPoint::new(2, 4)]
7217 );
7218
7219 view.move_to_next_word_end(&MoveToNextWordEnd, cx);
7220 assert_eq!(
7221 view.selected_display_ranges(cx),
7222 &[DisplayPoint::new(2, 8)..DisplayPoint::new(2, 8)]
7223 );
7224
7225 view.move_to_previous_word_start(&MoveToPreviousWordStart, cx);
7226 assert_eq!(
7227 view.selected_display_ranges(cx),
7228 &[DisplayPoint::new(2, 4)..DisplayPoint::new(2, 4)]
7229 );
7230
7231 view.move_to_previous_word_start(&MoveToPreviousWordStart, cx);
7232 assert_eq!(
7233 view.selected_display_ranges(cx),
7234 &[DisplayPoint::new(1, 14)..DisplayPoint::new(1, 14)]
7235 );
7236 });
7237 }
7238
7239 #[gpui::test]
7240 fn test_delete_to_word_boundary(cx: &mut gpui::MutableAppContext) {
7241 populate_settings(cx);
7242 let buffer = MultiBuffer::build_simple("one two three four", cx);
7243 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer.clone(), cx));
7244
7245 view.update(cx, |view, cx| {
7246 view.select_display_ranges(
7247 &[
7248 // an empty selection - the preceding word fragment is deleted
7249 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
7250 // characters selected - they are deleted
7251 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 12),
7252 ],
7253 cx,
7254 );
7255 view.delete_to_previous_word_start(&DeleteToPreviousWordStart, cx);
7256 });
7257
7258 assert_eq!(buffer.read(cx).read(cx).text(), "e two te four");
7259
7260 view.update(cx, |view, cx| {
7261 view.select_display_ranges(
7262 &[
7263 // an empty selection - the following word fragment is deleted
7264 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
7265 // characters selected - they are deleted
7266 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 10),
7267 ],
7268 cx,
7269 );
7270 view.delete_to_next_word_end(&DeleteToNextWordEnd, cx);
7271 });
7272
7273 assert_eq!(buffer.read(cx).read(cx).text(), "e t te our");
7274 }
7275
7276 #[gpui::test]
7277 fn test_newline(cx: &mut gpui::MutableAppContext) {
7278 populate_settings(cx);
7279 let buffer = MultiBuffer::build_simple("aaaa\n bbbb\n", cx);
7280 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer.clone(), cx));
7281
7282 view.update(cx, |view, cx| {
7283 view.select_display_ranges(
7284 &[
7285 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
7286 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
7287 DisplayPoint::new(1, 6)..DisplayPoint::new(1, 6),
7288 ],
7289 cx,
7290 );
7291
7292 view.newline(&Newline, cx);
7293 assert_eq!(view.text(cx), "aa\naa\n \n bb\n bb\n");
7294 });
7295 }
7296
7297 #[gpui::test]
7298 fn test_newline_with_old_selections(cx: &mut gpui::MutableAppContext) {
7299 populate_settings(cx);
7300 let buffer = MultiBuffer::build_simple(
7301 "
7302 a
7303 b(
7304 X
7305 )
7306 c(
7307 X
7308 )
7309 "
7310 .unindent()
7311 .as_str(),
7312 cx,
7313 );
7314
7315 let (_, editor) = cx.add_window(Default::default(), |cx| {
7316 let mut editor = build_editor(buffer.clone(), cx);
7317 editor.select_ranges(
7318 [
7319 Point::new(2, 4)..Point::new(2, 5),
7320 Point::new(5, 4)..Point::new(5, 5),
7321 ],
7322 None,
7323 cx,
7324 );
7325 editor
7326 });
7327
7328 // Edit the buffer directly, deleting ranges surrounding the editor's selections
7329 buffer.update(cx, |buffer, cx| {
7330 buffer.edit(
7331 [
7332 Point::new(1, 2)..Point::new(3, 0),
7333 Point::new(4, 2)..Point::new(6, 0),
7334 ],
7335 "",
7336 cx,
7337 );
7338 assert_eq!(
7339 buffer.read(cx).text(),
7340 "
7341 a
7342 b()
7343 c()
7344 "
7345 .unindent()
7346 );
7347 });
7348
7349 editor.update(cx, |editor, cx| {
7350 assert_eq!(
7351 editor.selected_ranges(cx),
7352 &[
7353 Point::new(1, 2)..Point::new(1, 2),
7354 Point::new(2, 2)..Point::new(2, 2),
7355 ],
7356 );
7357
7358 editor.newline(&Newline, cx);
7359 assert_eq!(
7360 editor.text(cx),
7361 "
7362 a
7363 b(
7364 )
7365 c(
7366 )
7367 "
7368 .unindent()
7369 );
7370
7371 // The selections are moved after the inserted newlines
7372 assert_eq!(
7373 editor.selected_ranges(cx),
7374 &[
7375 Point::new(2, 0)..Point::new(2, 0),
7376 Point::new(4, 0)..Point::new(4, 0),
7377 ],
7378 );
7379 });
7380 }
7381
7382 #[gpui::test]
7383 fn test_insert_with_old_selections(cx: &mut gpui::MutableAppContext) {
7384 populate_settings(cx);
7385 let buffer = MultiBuffer::build_simple("a( X ), b( Y ), c( Z )", cx);
7386 let (_, editor) = cx.add_window(Default::default(), |cx| {
7387 let mut editor = build_editor(buffer.clone(), cx);
7388 editor.select_ranges([3..4, 11..12, 19..20], None, cx);
7389 editor
7390 });
7391
7392 // Edit the buffer directly, deleting ranges surrounding the editor's selections
7393 buffer.update(cx, |buffer, cx| {
7394 buffer.edit([2..5, 10..13, 18..21], "", cx);
7395 assert_eq!(buffer.read(cx).text(), "a(), b(), c()".unindent());
7396 });
7397
7398 editor.update(cx, |editor, cx| {
7399 assert_eq!(editor.selected_ranges(cx), &[2..2, 7..7, 12..12],);
7400
7401 editor.insert("Z", cx);
7402 assert_eq!(editor.text(cx), "a(Z), b(Z), c(Z)");
7403
7404 // The selections are moved after the inserted characters
7405 assert_eq!(editor.selected_ranges(cx), &[3..3, 9..9, 15..15],);
7406 });
7407 }
7408
7409 #[gpui::test]
7410 fn test_indent_outdent(cx: &mut gpui::MutableAppContext) {
7411 populate_settings(cx);
7412 let buffer = MultiBuffer::build_simple(" one two\nthree\n four", cx);
7413 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer.clone(), cx));
7414
7415 view.update(cx, |view, cx| {
7416 // two selections on the same line
7417 view.select_display_ranges(
7418 &[
7419 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 5),
7420 DisplayPoint::new(0, 6)..DisplayPoint::new(0, 9),
7421 ],
7422 cx,
7423 );
7424
7425 // indent from mid-tabstop to full tabstop
7426 view.tab(&Tab, cx);
7427 assert_eq!(view.text(cx), " one two\nthree\n four");
7428 assert_eq!(
7429 view.selected_display_ranges(cx),
7430 &[
7431 DisplayPoint::new(0, 4)..DisplayPoint::new(0, 7),
7432 DisplayPoint::new(0, 8)..DisplayPoint::new(0, 11),
7433 ]
7434 );
7435
7436 // outdent from 1 tabstop to 0 tabstops
7437 view.outdent(&Outdent, cx);
7438 assert_eq!(view.text(cx), "one two\nthree\n four");
7439 assert_eq!(
7440 view.selected_display_ranges(cx),
7441 &[
7442 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 3),
7443 DisplayPoint::new(0, 4)..DisplayPoint::new(0, 7),
7444 ]
7445 );
7446
7447 // select across line ending
7448 view.select_display_ranges(&[DisplayPoint::new(1, 1)..DisplayPoint::new(2, 0)], cx);
7449
7450 // indent and outdent affect only the preceding line
7451 view.tab(&Tab, cx);
7452 assert_eq!(view.text(cx), "one two\n three\n four");
7453 assert_eq!(
7454 view.selected_display_ranges(cx),
7455 &[DisplayPoint::new(1, 5)..DisplayPoint::new(2, 0)]
7456 );
7457 view.outdent(&Outdent, cx);
7458 assert_eq!(view.text(cx), "one two\nthree\n four");
7459 assert_eq!(
7460 view.selected_display_ranges(cx),
7461 &[DisplayPoint::new(1, 1)..DisplayPoint::new(2, 0)]
7462 );
7463
7464 // Ensure that indenting/outdenting works when the cursor is at column 0.
7465 view.select_display_ranges(&[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)], cx);
7466 view.tab(&Tab, cx);
7467 assert_eq!(view.text(cx), "one two\n three\n four");
7468 assert_eq!(
7469 view.selected_display_ranges(cx),
7470 &[DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4)]
7471 );
7472
7473 view.select_display_ranges(&[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)], cx);
7474 view.outdent(&Outdent, cx);
7475 assert_eq!(view.text(cx), "one two\nthree\n four");
7476 assert_eq!(
7477 view.selected_display_ranges(cx),
7478 &[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)]
7479 );
7480 });
7481 }
7482
7483 #[gpui::test]
7484 fn test_backspace(cx: &mut gpui::MutableAppContext) {
7485 populate_settings(cx);
7486 let (_, view) = cx.add_window(Default::default(), |cx| {
7487 build_editor(MultiBuffer::build_simple("", cx), cx)
7488 });
7489
7490 view.update(cx, |view, cx| {
7491 view.set_text("one two three\nfour five six\nseven eight nine\nten\n", cx);
7492 view.select_display_ranges(
7493 &[
7494 // an empty selection - the preceding character is deleted
7495 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
7496 // one character selected - it is deleted
7497 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
7498 // a line suffix selected - it is deleted
7499 DisplayPoint::new(2, 6)..DisplayPoint::new(3, 0),
7500 ],
7501 cx,
7502 );
7503 view.backspace(&Backspace, cx);
7504 assert_eq!(view.text(cx), "oe two three\nfou five six\nseven ten\n");
7505
7506 view.set_text(" one\n two\n three\n four", cx);
7507 view.select_display_ranges(
7508 &[
7509 // cursors at the the end of leading indent - last indent is deleted
7510 DisplayPoint::new(0, 4)..DisplayPoint::new(0, 4),
7511 DisplayPoint::new(1, 8)..DisplayPoint::new(1, 8),
7512 // cursors inside leading indent - overlapping indent deletions are coalesced
7513 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 4),
7514 DisplayPoint::new(2, 5)..DisplayPoint::new(2, 5),
7515 DisplayPoint::new(2, 6)..DisplayPoint::new(2, 6),
7516 // cursor at the beginning of a line - preceding newline is deleted
7517 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
7518 // selection inside leading indent - only the selected character is deleted
7519 DisplayPoint::new(3, 2)..DisplayPoint::new(3, 3),
7520 ],
7521 cx,
7522 );
7523 view.backspace(&Backspace, cx);
7524 assert_eq!(view.text(cx), "one\n two\n three four");
7525 });
7526 }
7527
7528 #[gpui::test]
7529 fn test_delete(cx: &mut gpui::MutableAppContext) {
7530 populate_settings(cx);
7531 let buffer =
7532 MultiBuffer::build_simple("one two three\nfour five six\nseven eight nine\nten\n", cx);
7533 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer.clone(), cx));
7534
7535 view.update(cx, |view, cx| {
7536 view.select_display_ranges(
7537 &[
7538 // an empty selection - the following character is deleted
7539 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
7540 // one character selected - it is deleted
7541 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
7542 // a line suffix selected - it is deleted
7543 DisplayPoint::new(2, 6)..DisplayPoint::new(3, 0),
7544 ],
7545 cx,
7546 );
7547 view.delete(&Delete, cx);
7548 });
7549
7550 assert_eq!(
7551 buffer.read(cx).read(cx).text(),
7552 "on two three\nfou five six\nseven ten\n"
7553 );
7554 }
7555
7556 #[gpui::test]
7557 fn test_delete_line(cx: &mut gpui::MutableAppContext) {
7558 populate_settings(cx);
7559 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
7560 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
7561 view.update(cx, |view, cx| {
7562 view.select_display_ranges(
7563 &[
7564 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
7565 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 1),
7566 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
7567 ],
7568 cx,
7569 );
7570 view.delete_line(&DeleteLine, cx);
7571 assert_eq!(view.display_text(cx), "ghi");
7572 assert_eq!(
7573 view.selected_display_ranges(cx),
7574 vec![
7575 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
7576 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1)
7577 ]
7578 );
7579 });
7580
7581 populate_settings(cx);
7582 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
7583 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
7584 view.update(cx, |view, cx| {
7585 view.select_display_ranges(&[DisplayPoint::new(2, 0)..DisplayPoint::new(0, 1)], cx);
7586 view.delete_line(&DeleteLine, cx);
7587 assert_eq!(view.display_text(cx), "ghi\n");
7588 assert_eq!(
7589 view.selected_display_ranges(cx),
7590 vec![DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1)]
7591 );
7592 });
7593 }
7594
7595 #[gpui::test]
7596 fn test_duplicate_line(cx: &mut gpui::MutableAppContext) {
7597 populate_settings(cx);
7598 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
7599 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
7600 view.update(cx, |view, cx| {
7601 view.select_display_ranges(
7602 &[
7603 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
7604 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
7605 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
7606 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
7607 ],
7608 cx,
7609 );
7610 view.duplicate_line(&DuplicateLine, cx);
7611 assert_eq!(view.display_text(cx), "abc\nabc\ndef\ndef\nghi\n\n");
7612 assert_eq!(
7613 view.selected_display_ranges(cx),
7614 vec![
7615 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 1),
7616 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
7617 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
7618 DisplayPoint::new(6, 0)..DisplayPoint::new(6, 0),
7619 ]
7620 );
7621 });
7622
7623 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
7624 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
7625 view.update(cx, |view, cx| {
7626 view.select_display_ranges(
7627 &[
7628 DisplayPoint::new(0, 1)..DisplayPoint::new(1, 1),
7629 DisplayPoint::new(1, 2)..DisplayPoint::new(2, 1),
7630 ],
7631 cx,
7632 );
7633 view.duplicate_line(&DuplicateLine, cx);
7634 assert_eq!(view.display_text(cx), "abc\ndef\nghi\nabc\ndef\nghi\n");
7635 assert_eq!(
7636 view.selected_display_ranges(cx),
7637 vec![
7638 DisplayPoint::new(3, 1)..DisplayPoint::new(4, 1),
7639 DisplayPoint::new(4, 2)..DisplayPoint::new(5, 1),
7640 ]
7641 );
7642 });
7643 }
7644
7645 #[gpui::test]
7646 fn test_move_line_up_down(cx: &mut gpui::MutableAppContext) {
7647 populate_settings(cx);
7648 let buffer = MultiBuffer::build_simple(&sample_text(10, 5, 'a'), cx);
7649 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
7650 view.update(cx, |view, cx| {
7651 view.fold_ranges(
7652 vec![
7653 Point::new(0, 2)..Point::new(1, 2),
7654 Point::new(2, 3)..Point::new(4, 1),
7655 Point::new(7, 0)..Point::new(8, 4),
7656 ],
7657 cx,
7658 );
7659 view.select_display_ranges(
7660 &[
7661 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
7662 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 1),
7663 DisplayPoint::new(3, 2)..DisplayPoint::new(4, 3),
7664 DisplayPoint::new(5, 0)..DisplayPoint::new(5, 2),
7665 ],
7666 cx,
7667 );
7668 assert_eq!(
7669 view.display_text(cx),
7670 "aa…bbb\nccc…eeee\nfffff\nggggg\n…i\njjjjj"
7671 );
7672
7673 view.move_line_up(&MoveLineUp, cx);
7674 assert_eq!(
7675 view.display_text(cx),
7676 "aa…bbb\nccc…eeee\nggggg\n…i\njjjjj\nfffff"
7677 );
7678 assert_eq!(
7679 view.selected_display_ranges(cx),
7680 vec![
7681 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
7682 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
7683 DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3),
7684 DisplayPoint::new(4, 0)..DisplayPoint::new(4, 2)
7685 ]
7686 );
7687 });
7688
7689 view.update(cx, |view, cx| {
7690 view.move_line_down(&MoveLineDown, cx);
7691 assert_eq!(
7692 view.display_text(cx),
7693 "ccc…eeee\naa…bbb\nfffff\nggggg\n…i\njjjjj"
7694 );
7695 assert_eq!(
7696 view.selected_display_ranges(cx),
7697 vec![
7698 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
7699 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 1),
7700 DisplayPoint::new(3, 2)..DisplayPoint::new(4, 3),
7701 DisplayPoint::new(5, 0)..DisplayPoint::new(5, 2)
7702 ]
7703 );
7704 });
7705
7706 view.update(cx, |view, cx| {
7707 view.move_line_down(&MoveLineDown, cx);
7708 assert_eq!(
7709 view.display_text(cx),
7710 "ccc…eeee\nfffff\naa…bbb\nggggg\n…i\njjjjj"
7711 );
7712 assert_eq!(
7713 view.selected_display_ranges(cx),
7714 vec![
7715 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
7716 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 1),
7717 DisplayPoint::new(3, 2)..DisplayPoint::new(4, 3),
7718 DisplayPoint::new(5, 0)..DisplayPoint::new(5, 2)
7719 ]
7720 );
7721 });
7722
7723 view.update(cx, |view, cx| {
7724 view.move_line_up(&MoveLineUp, cx);
7725 assert_eq!(
7726 view.display_text(cx),
7727 "ccc…eeee\naa…bbb\nggggg\n…i\njjjjj\nfffff"
7728 );
7729 assert_eq!(
7730 view.selected_display_ranges(cx),
7731 vec![
7732 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
7733 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
7734 DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3),
7735 DisplayPoint::new(4, 0)..DisplayPoint::new(4, 2)
7736 ]
7737 );
7738 });
7739 }
7740
7741 #[gpui::test]
7742 fn test_move_line_up_down_with_blocks(cx: &mut gpui::MutableAppContext) {
7743 populate_settings(cx);
7744 let buffer = MultiBuffer::build_simple(&sample_text(10, 5, 'a'), cx);
7745 let snapshot = buffer.read(cx).snapshot(cx);
7746 let (_, editor) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
7747 editor.update(cx, |editor, cx| {
7748 editor.insert_blocks(
7749 [BlockProperties {
7750 position: snapshot.anchor_after(Point::new(2, 0)),
7751 disposition: BlockDisposition::Below,
7752 height: 1,
7753 render: Arc::new(|_| Empty::new().boxed()),
7754 }],
7755 cx,
7756 );
7757 editor.select_ranges([Point::new(2, 0)..Point::new(2, 0)], None, cx);
7758 editor.move_line_down(&MoveLineDown, cx);
7759 });
7760 }
7761
7762 #[gpui::test]
7763 fn test_clipboard(cx: &mut gpui::MutableAppContext) {
7764 populate_settings(cx);
7765 let buffer = MultiBuffer::build_simple("one✅ two three four five six ", cx);
7766 let view = cx
7767 .add_window(Default::default(), |cx| build_editor(buffer.clone(), cx))
7768 .1;
7769
7770 // Cut with three selections. Clipboard text is divided into three slices.
7771 view.update(cx, |view, cx| {
7772 view.select_ranges(vec![0..7, 11..17, 22..27], None, cx);
7773 view.cut(&Cut, cx);
7774 assert_eq!(view.display_text(cx), "two four six ");
7775 });
7776
7777 // Paste with three cursors. Each cursor pastes one slice of the clipboard text.
7778 view.update(cx, |view, cx| {
7779 view.select_ranges(vec![4..4, 9..9, 13..13], None, cx);
7780 view.paste(&Paste, cx);
7781 assert_eq!(view.display_text(cx), "two one✅ four three six five ");
7782 assert_eq!(
7783 view.selected_display_ranges(cx),
7784 &[
7785 DisplayPoint::new(0, 11)..DisplayPoint::new(0, 11),
7786 DisplayPoint::new(0, 22)..DisplayPoint::new(0, 22),
7787 DisplayPoint::new(0, 31)..DisplayPoint::new(0, 31)
7788 ]
7789 );
7790 });
7791
7792 // Paste again but with only two cursors. Since the number of cursors doesn't
7793 // match the number of slices in the clipboard, the entire clipboard text
7794 // is pasted at each cursor.
7795 view.update(cx, |view, cx| {
7796 view.select_ranges(vec![0..0, 31..31], None, cx);
7797 view.handle_input(&Input("( ".into()), cx);
7798 view.paste(&Paste, cx);
7799 view.handle_input(&Input(") ".into()), cx);
7800 assert_eq!(
7801 view.display_text(cx),
7802 "( one✅ three five ) two one✅ four three six five ( one✅ three five ) "
7803 );
7804 });
7805
7806 view.update(cx, |view, cx| {
7807 view.select_ranges(vec![0..0], None, cx);
7808 view.handle_input(&Input("123\n4567\n89\n".into()), cx);
7809 assert_eq!(
7810 view.display_text(cx),
7811 "123\n4567\n89\n( one✅ three five ) two one✅ four three six five ( one✅ three five ) "
7812 );
7813 });
7814
7815 // Cut with three selections, one of which is full-line.
7816 view.update(cx, |view, cx| {
7817 view.select_display_ranges(
7818 &[
7819 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 2),
7820 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
7821 DisplayPoint::new(2, 0)..DisplayPoint::new(2, 1),
7822 ],
7823 cx,
7824 );
7825 view.cut(&Cut, cx);
7826 assert_eq!(
7827 view.display_text(cx),
7828 "13\n9\n( one✅ three five ) two one✅ four three six five ( one✅ three five ) "
7829 );
7830 });
7831
7832 // Paste with three selections, noticing how the copied selection that was full-line
7833 // gets inserted before the second cursor.
7834 view.update(cx, |view, cx| {
7835 view.select_display_ranges(
7836 &[
7837 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
7838 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
7839 DisplayPoint::new(2, 2)..DisplayPoint::new(2, 3),
7840 ],
7841 cx,
7842 );
7843 view.paste(&Paste, cx);
7844 assert_eq!(
7845 view.display_text(cx),
7846 "123\n4567\n9\n( 8ne✅ three five ) two one✅ four three six five ( one✅ three five ) "
7847 );
7848 assert_eq!(
7849 view.selected_display_ranges(cx),
7850 &[
7851 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
7852 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
7853 DisplayPoint::new(3, 3)..DisplayPoint::new(3, 3),
7854 ]
7855 );
7856 });
7857
7858 // Copy with a single cursor only, which writes the whole line into the clipboard.
7859 view.update(cx, |view, cx| {
7860 view.select_display_ranges(&[DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1)], cx);
7861 view.copy(&Copy, cx);
7862 });
7863
7864 // Paste with three selections, noticing how the copied full-line selection is inserted
7865 // before the empty selections but replaces the selection that is non-empty.
7866 view.update(cx, |view, cx| {
7867 view.select_display_ranges(
7868 &[
7869 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
7870 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 2),
7871 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
7872 ],
7873 cx,
7874 );
7875 view.paste(&Paste, cx);
7876 assert_eq!(
7877 view.display_text(cx),
7878 "123\n123\n123\n67\n123\n9\n( 8ne✅ three five ) two one✅ four three six five ( one✅ three five ) "
7879 );
7880 assert_eq!(
7881 view.selected_display_ranges(cx),
7882 &[
7883 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
7884 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
7885 DisplayPoint::new(5, 1)..DisplayPoint::new(5, 1),
7886 ]
7887 );
7888 });
7889 }
7890
7891 #[gpui::test]
7892 fn test_select_all(cx: &mut gpui::MutableAppContext) {
7893 populate_settings(cx);
7894 let buffer = MultiBuffer::build_simple("abc\nde\nfgh", cx);
7895 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
7896 view.update(cx, |view, cx| {
7897 view.select_all(&SelectAll, cx);
7898 assert_eq!(
7899 view.selected_display_ranges(cx),
7900 &[DisplayPoint::new(0, 0)..DisplayPoint::new(2, 3)]
7901 );
7902 });
7903 }
7904
7905 #[gpui::test]
7906 fn test_select_line(cx: &mut gpui::MutableAppContext) {
7907 populate_settings(cx);
7908 let buffer = MultiBuffer::build_simple(&sample_text(6, 5, 'a'), cx);
7909 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
7910 view.update(cx, |view, cx| {
7911 view.select_display_ranges(
7912 &[
7913 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
7914 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
7915 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
7916 DisplayPoint::new(4, 2)..DisplayPoint::new(4, 2),
7917 ],
7918 cx,
7919 );
7920 view.select_line(&SelectLine, cx);
7921 assert_eq!(
7922 view.selected_display_ranges(cx),
7923 vec![
7924 DisplayPoint::new(0, 0)..DisplayPoint::new(2, 0),
7925 DisplayPoint::new(4, 0)..DisplayPoint::new(5, 0),
7926 ]
7927 );
7928 });
7929
7930 view.update(cx, |view, cx| {
7931 view.select_line(&SelectLine, cx);
7932 assert_eq!(
7933 view.selected_display_ranges(cx),
7934 vec![
7935 DisplayPoint::new(0, 0)..DisplayPoint::new(3, 0),
7936 DisplayPoint::new(4, 0)..DisplayPoint::new(5, 5),
7937 ]
7938 );
7939 });
7940
7941 view.update(cx, |view, cx| {
7942 view.select_line(&SelectLine, cx);
7943 assert_eq!(
7944 view.selected_display_ranges(cx),
7945 vec![DisplayPoint::new(0, 0)..DisplayPoint::new(5, 5)]
7946 );
7947 });
7948 }
7949
7950 #[gpui::test]
7951 fn test_split_selection_into_lines(cx: &mut gpui::MutableAppContext) {
7952 populate_settings(cx);
7953 let buffer = MultiBuffer::build_simple(&sample_text(9, 5, 'a'), cx);
7954 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
7955 view.update(cx, |view, cx| {
7956 view.fold_ranges(
7957 vec![
7958 Point::new(0, 2)..Point::new(1, 2),
7959 Point::new(2, 3)..Point::new(4, 1),
7960 Point::new(7, 0)..Point::new(8, 4),
7961 ],
7962 cx,
7963 );
7964 view.select_display_ranges(
7965 &[
7966 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
7967 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
7968 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
7969 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 4),
7970 ],
7971 cx,
7972 );
7973 assert_eq!(view.display_text(cx), "aa…bbb\nccc…eeee\nfffff\nggggg\n…i");
7974 });
7975
7976 view.update(cx, |view, cx| {
7977 view.split_selection_into_lines(&SplitSelectionIntoLines, cx);
7978 assert_eq!(
7979 view.display_text(cx),
7980 "aaaaa\nbbbbb\nccc…eeee\nfffff\nggggg\n…i"
7981 );
7982 assert_eq!(
7983 view.selected_display_ranges(cx),
7984 [
7985 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
7986 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
7987 DisplayPoint::new(2, 0)..DisplayPoint::new(2, 0),
7988 DisplayPoint::new(5, 4)..DisplayPoint::new(5, 4)
7989 ]
7990 );
7991 });
7992
7993 view.update(cx, |view, cx| {
7994 view.select_display_ranges(&[DisplayPoint::new(5, 0)..DisplayPoint::new(0, 1)], cx);
7995 view.split_selection_into_lines(&SplitSelectionIntoLines, cx);
7996 assert_eq!(
7997 view.display_text(cx),
7998 "aaaaa\nbbbbb\nccccc\nddddd\neeeee\nfffff\nggggg\nhhhhh\niiiii"
7999 );
8000 assert_eq!(
8001 view.selected_display_ranges(cx),
8002 [
8003 DisplayPoint::new(0, 5)..DisplayPoint::new(0, 5),
8004 DisplayPoint::new(1, 5)..DisplayPoint::new(1, 5),
8005 DisplayPoint::new(2, 5)..DisplayPoint::new(2, 5),
8006 DisplayPoint::new(3, 5)..DisplayPoint::new(3, 5),
8007 DisplayPoint::new(4, 5)..DisplayPoint::new(4, 5),
8008 DisplayPoint::new(5, 5)..DisplayPoint::new(5, 5),
8009 DisplayPoint::new(6, 5)..DisplayPoint::new(6, 5),
8010 DisplayPoint::new(7, 0)..DisplayPoint::new(7, 0)
8011 ]
8012 );
8013 });
8014 }
8015
8016 #[gpui::test]
8017 fn test_add_selection_above_below(cx: &mut gpui::MutableAppContext) {
8018 populate_settings(cx);
8019 let buffer = MultiBuffer::build_simple("abc\ndefghi\n\njk\nlmno\n", cx);
8020 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
8021
8022 view.update(cx, |view, cx| {
8023 view.select_display_ranges(&[DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)], cx);
8024 });
8025 view.update(cx, |view, cx| {
8026 view.add_selection_above(&AddSelectionAbove, cx);
8027 assert_eq!(
8028 view.selected_display_ranges(cx),
8029 vec![
8030 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
8031 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)
8032 ]
8033 );
8034 });
8035
8036 view.update(cx, |view, cx| {
8037 view.add_selection_above(&AddSelectionAbove, cx);
8038 assert_eq!(
8039 view.selected_display_ranges(cx),
8040 vec![
8041 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
8042 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)
8043 ]
8044 );
8045 });
8046
8047 view.update(cx, |view, cx| {
8048 view.add_selection_below(&AddSelectionBelow, cx);
8049 assert_eq!(
8050 view.selected_display_ranges(cx),
8051 vec![DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)]
8052 );
8053 });
8054
8055 view.update(cx, |view, cx| {
8056 view.add_selection_below(&AddSelectionBelow, cx);
8057 assert_eq!(
8058 view.selected_display_ranges(cx),
8059 vec![
8060 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3),
8061 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 3)
8062 ]
8063 );
8064 });
8065
8066 view.update(cx, |view, cx| {
8067 view.add_selection_below(&AddSelectionBelow, cx);
8068 assert_eq!(
8069 view.selected_display_ranges(cx),
8070 vec![
8071 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3),
8072 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 3)
8073 ]
8074 );
8075 });
8076
8077 view.update(cx, |view, cx| {
8078 view.select_display_ranges(&[DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3)], cx);
8079 });
8080 view.update(cx, |view, cx| {
8081 view.add_selection_below(&AddSelectionBelow, cx);
8082 assert_eq!(
8083 view.selected_display_ranges(cx),
8084 vec![
8085 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
8086 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 3)
8087 ]
8088 );
8089 });
8090
8091 view.update(cx, |view, cx| {
8092 view.add_selection_below(&AddSelectionBelow, cx);
8093 assert_eq!(
8094 view.selected_display_ranges(cx),
8095 vec![
8096 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
8097 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 3)
8098 ]
8099 );
8100 });
8101
8102 view.update(cx, |view, cx| {
8103 view.add_selection_above(&AddSelectionAbove, cx);
8104 assert_eq!(
8105 view.selected_display_ranges(cx),
8106 vec![DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3)]
8107 );
8108 });
8109
8110 view.update(cx, |view, cx| {
8111 view.add_selection_above(&AddSelectionAbove, cx);
8112 assert_eq!(
8113 view.selected_display_ranges(cx),
8114 vec![DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3)]
8115 );
8116 });
8117
8118 view.update(cx, |view, cx| {
8119 view.select_display_ranges(&[DisplayPoint::new(0, 1)..DisplayPoint::new(1, 4)], cx);
8120 view.add_selection_below(&AddSelectionBelow, cx);
8121 assert_eq!(
8122 view.selected_display_ranges(cx),
8123 vec![
8124 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
8125 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 4),
8126 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 2),
8127 ]
8128 );
8129 });
8130
8131 view.update(cx, |view, cx| {
8132 view.add_selection_below(&AddSelectionBelow, cx);
8133 assert_eq!(
8134 view.selected_display_ranges(cx),
8135 vec![
8136 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
8137 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 4),
8138 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 2),
8139 DisplayPoint::new(4, 1)..DisplayPoint::new(4, 4),
8140 ]
8141 );
8142 });
8143
8144 view.update(cx, |view, cx| {
8145 view.add_selection_above(&AddSelectionAbove, cx);
8146 assert_eq!(
8147 view.selected_display_ranges(cx),
8148 vec![
8149 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
8150 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 4),
8151 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 2),
8152 ]
8153 );
8154 });
8155
8156 view.update(cx, |view, cx| {
8157 view.select_display_ranges(&[DisplayPoint::new(4, 3)..DisplayPoint::new(1, 1)], cx);
8158 });
8159 view.update(cx, |view, cx| {
8160 view.add_selection_above(&AddSelectionAbove, cx);
8161 assert_eq!(
8162 view.selected_display_ranges(cx),
8163 vec![
8164 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 1),
8165 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 1),
8166 DisplayPoint::new(3, 2)..DisplayPoint::new(3, 1),
8167 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 1),
8168 ]
8169 );
8170 });
8171
8172 view.update(cx, |view, cx| {
8173 view.add_selection_below(&AddSelectionBelow, cx);
8174 assert_eq!(
8175 view.selected_display_ranges(cx),
8176 vec![
8177 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 1),
8178 DisplayPoint::new(3, 2)..DisplayPoint::new(3, 1),
8179 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 1),
8180 ]
8181 );
8182 });
8183 }
8184
8185 #[gpui::test]
8186 async fn test_select_larger_smaller_syntax_node(cx: &mut gpui::TestAppContext) {
8187 cx.update(populate_settings);
8188 let language = Arc::new(Language::new(
8189 LanguageConfig::default(),
8190 Some(tree_sitter_rust::language()),
8191 ));
8192
8193 let text = r#"
8194 use mod1::mod2::{mod3, mod4};
8195
8196 fn fn_1(param1: bool, param2: &str) {
8197 let var1 = "text";
8198 }
8199 "#
8200 .unindent();
8201
8202 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
8203 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
8204 let (_, view) = cx.add_window(|cx| build_editor(buffer, cx));
8205 view.condition(&cx, |view, cx| !view.buffer.read(cx).is_parsing(cx))
8206 .await;
8207
8208 view.update(cx, |view, cx| {
8209 view.select_display_ranges(
8210 &[
8211 DisplayPoint::new(0, 25)..DisplayPoint::new(0, 25),
8212 DisplayPoint::new(2, 24)..DisplayPoint::new(2, 12),
8213 DisplayPoint::new(3, 18)..DisplayPoint::new(3, 18),
8214 ],
8215 cx,
8216 );
8217 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
8218 });
8219 assert_eq!(
8220 view.update(cx, |view, cx| view.selected_display_ranges(cx)),
8221 &[
8222 DisplayPoint::new(0, 23)..DisplayPoint::new(0, 27),
8223 DisplayPoint::new(2, 35)..DisplayPoint::new(2, 7),
8224 DisplayPoint::new(3, 15)..DisplayPoint::new(3, 21),
8225 ]
8226 );
8227
8228 view.update(cx, |view, cx| {
8229 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
8230 });
8231 assert_eq!(
8232 view.update(cx, |view, cx| view.selected_display_ranges(cx)),
8233 &[
8234 DisplayPoint::new(0, 16)..DisplayPoint::new(0, 28),
8235 DisplayPoint::new(4, 1)..DisplayPoint::new(2, 0),
8236 ]
8237 );
8238
8239 view.update(cx, |view, cx| {
8240 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
8241 });
8242 assert_eq!(
8243 view.update(cx, |view, cx| view.selected_display_ranges(cx)),
8244 &[DisplayPoint::new(5, 0)..DisplayPoint::new(0, 0)]
8245 );
8246
8247 // Trying to expand the selected syntax node one more time has no effect.
8248 view.update(cx, |view, cx| {
8249 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
8250 });
8251 assert_eq!(
8252 view.update(cx, |view, cx| view.selected_display_ranges(cx)),
8253 &[DisplayPoint::new(5, 0)..DisplayPoint::new(0, 0)]
8254 );
8255
8256 view.update(cx, |view, cx| {
8257 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
8258 });
8259 assert_eq!(
8260 view.update(cx, |view, cx| view.selected_display_ranges(cx)),
8261 &[
8262 DisplayPoint::new(0, 16)..DisplayPoint::new(0, 28),
8263 DisplayPoint::new(4, 1)..DisplayPoint::new(2, 0),
8264 ]
8265 );
8266
8267 view.update(cx, |view, cx| {
8268 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
8269 });
8270 assert_eq!(
8271 view.update(cx, |view, cx| view.selected_display_ranges(cx)),
8272 &[
8273 DisplayPoint::new(0, 23)..DisplayPoint::new(0, 27),
8274 DisplayPoint::new(2, 35)..DisplayPoint::new(2, 7),
8275 DisplayPoint::new(3, 15)..DisplayPoint::new(3, 21),
8276 ]
8277 );
8278
8279 view.update(cx, |view, cx| {
8280 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
8281 });
8282 assert_eq!(
8283 view.update(cx, |view, cx| view.selected_display_ranges(cx)),
8284 &[
8285 DisplayPoint::new(0, 25)..DisplayPoint::new(0, 25),
8286 DisplayPoint::new(2, 24)..DisplayPoint::new(2, 12),
8287 DisplayPoint::new(3, 18)..DisplayPoint::new(3, 18),
8288 ]
8289 );
8290
8291 // Trying to shrink the selected syntax node one more time has no effect.
8292 view.update(cx, |view, cx| {
8293 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
8294 });
8295 assert_eq!(
8296 view.update(cx, |view, cx| view.selected_display_ranges(cx)),
8297 &[
8298 DisplayPoint::new(0, 25)..DisplayPoint::new(0, 25),
8299 DisplayPoint::new(2, 24)..DisplayPoint::new(2, 12),
8300 DisplayPoint::new(3, 18)..DisplayPoint::new(3, 18),
8301 ]
8302 );
8303
8304 // Ensure that we keep expanding the selection if the larger selection starts or ends within
8305 // a fold.
8306 view.update(cx, |view, cx| {
8307 view.fold_ranges(
8308 vec![
8309 Point::new(0, 21)..Point::new(0, 24),
8310 Point::new(3, 20)..Point::new(3, 22),
8311 ],
8312 cx,
8313 );
8314 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
8315 });
8316 assert_eq!(
8317 view.update(cx, |view, cx| view.selected_display_ranges(cx)),
8318 &[
8319 DisplayPoint::new(0, 16)..DisplayPoint::new(0, 28),
8320 DisplayPoint::new(2, 35)..DisplayPoint::new(2, 7),
8321 DisplayPoint::new(3, 4)..DisplayPoint::new(3, 23),
8322 ]
8323 );
8324 }
8325
8326 #[gpui::test]
8327 async fn test_autoindent_selections(cx: &mut gpui::TestAppContext) {
8328 cx.update(populate_settings);
8329 let language = Arc::new(
8330 Language::new(
8331 LanguageConfig {
8332 brackets: vec![
8333 BracketPair {
8334 start: "{".to_string(),
8335 end: "}".to_string(),
8336 close: false,
8337 newline: true,
8338 },
8339 BracketPair {
8340 start: "(".to_string(),
8341 end: ")".to_string(),
8342 close: false,
8343 newline: true,
8344 },
8345 ],
8346 ..Default::default()
8347 },
8348 Some(tree_sitter_rust::language()),
8349 )
8350 .with_indents_query(
8351 r#"
8352 (_ "(" ")" @end) @indent
8353 (_ "{" "}" @end) @indent
8354 "#,
8355 )
8356 .unwrap(),
8357 );
8358
8359 let text = "fn a() {}";
8360
8361 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
8362 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
8363 let (_, editor) = cx.add_window(|cx| build_editor(buffer, cx));
8364 editor
8365 .condition(&cx, |editor, cx| !editor.buffer.read(cx).is_parsing(cx))
8366 .await;
8367
8368 editor.update(cx, |editor, cx| {
8369 editor.select_ranges([5..5, 8..8, 9..9], None, cx);
8370 editor.newline(&Newline, cx);
8371 assert_eq!(editor.text(cx), "fn a(\n \n) {\n \n}\n");
8372 assert_eq!(
8373 editor.selected_ranges(cx),
8374 &[
8375 Point::new(1, 4)..Point::new(1, 4),
8376 Point::new(3, 4)..Point::new(3, 4),
8377 Point::new(5, 0)..Point::new(5, 0)
8378 ]
8379 );
8380 });
8381 }
8382
8383 #[gpui::test]
8384 async fn test_autoclose_pairs(cx: &mut gpui::TestAppContext) {
8385 cx.update(populate_settings);
8386 let language = Arc::new(Language::new(
8387 LanguageConfig {
8388 brackets: vec![
8389 BracketPair {
8390 start: "{".to_string(),
8391 end: "}".to_string(),
8392 close: true,
8393 newline: true,
8394 },
8395 BracketPair {
8396 start: "/*".to_string(),
8397 end: " */".to_string(),
8398 close: true,
8399 newline: true,
8400 },
8401 ],
8402 autoclose_before: "})]".to_string(),
8403 ..Default::default()
8404 },
8405 Some(tree_sitter_rust::language()),
8406 ));
8407
8408 let text = r#"
8409 a
8410
8411 /
8412
8413 "#
8414 .unindent();
8415
8416 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
8417 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
8418 let (_, view) = cx.add_window(|cx| build_editor(buffer, cx));
8419 view.condition(&cx, |view, cx| !view.buffer.read(cx).is_parsing(cx))
8420 .await;
8421
8422 view.update(cx, |view, cx| {
8423 view.select_display_ranges(
8424 &[
8425 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
8426 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
8427 ],
8428 cx,
8429 );
8430
8431 view.handle_input(&Input("{".to_string()), cx);
8432 view.handle_input(&Input("{".to_string()), cx);
8433 view.handle_input(&Input("{".to_string()), cx);
8434 assert_eq!(
8435 view.text(cx),
8436 "
8437 {{{}}}
8438 {{{}}}
8439 /
8440
8441 "
8442 .unindent()
8443 );
8444
8445 view.move_right(&MoveRight, cx);
8446 view.handle_input(&Input("}".to_string()), cx);
8447 view.handle_input(&Input("}".to_string()), cx);
8448 view.handle_input(&Input("}".to_string()), cx);
8449 assert_eq!(
8450 view.text(cx),
8451 "
8452 {{{}}}}
8453 {{{}}}}
8454 /
8455
8456 "
8457 .unindent()
8458 );
8459
8460 view.undo(&Undo, cx);
8461 view.handle_input(&Input("/".to_string()), cx);
8462 view.handle_input(&Input("*".to_string()), cx);
8463 assert_eq!(
8464 view.text(cx),
8465 "
8466 /* */
8467 /* */
8468 /
8469
8470 "
8471 .unindent()
8472 );
8473
8474 view.undo(&Undo, cx);
8475 view.select_display_ranges(
8476 &[
8477 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
8478 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
8479 ],
8480 cx,
8481 );
8482 view.handle_input(&Input("*".to_string()), cx);
8483 assert_eq!(
8484 view.text(cx),
8485 "
8486 a
8487
8488 /*
8489 *
8490 "
8491 .unindent()
8492 );
8493
8494 // Don't autoclose if the next character isn't whitespace and isn't
8495 // listed in the language's "autoclose_before" section.
8496 view.finalize_last_transaction(cx);
8497 view.select_display_ranges(&[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)], cx);
8498 view.handle_input(&Input("{".to_string()), cx);
8499 assert_eq!(
8500 view.text(cx),
8501 "
8502 {a
8503
8504 /*
8505 *
8506 "
8507 .unindent()
8508 );
8509
8510 view.undo(&Undo, cx);
8511 view.select_display_ranges(&[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1)], cx);
8512 view.handle_input(&Input("{".to_string()), cx);
8513 assert_eq!(
8514 view.text(cx),
8515 "
8516 {a}
8517
8518 /*
8519 *
8520 "
8521 .unindent()
8522 );
8523 assert_eq!(
8524 view.selected_display_ranges(cx),
8525 [DisplayPoint::new(0, 1)..DisplayPoint::new(0, 2)]
8526 );
8527 });
8528 }
8529
8530 #[gpui::test]
8531 async fn test_snippets(cx: &mut gpui::TestAppContext) {
8532 cx.update(populate_settings);
8533
8534 let text = "
8535 a. b
8536 a. b
8537 a. b
8538 "
8539 .unindent();
8540 let buffer = cx.update(|cx| MultiBuffer::build_simple(&text, cx));
8541 let (_, editor) = cx.add_window(|cx| build_editor(buffer, cx));
8542
8543 editor.update(cx, |editor, cx| {
8544 let buffer = &editor.snapshot(cx).buffer_snapshot;
8545 let snippet = Snippet::parse("f(${1:one}, ${2:two}, ${1:three})$0").unwrap();
8546 let insertion_ranges = [
8547 Point::new(0, 2).to_offset(buffer)..Point::new(0, 2).to_offset(buffer),
8548 Point::new(1, 2).to_offset(buffer)..Point::new(1, 2).to_offset(buffer),
8549 Point::new(2, 2).to_offset(buffer)..Point::new(2, 2).to_offset(buffer),
8550 ];
8551
8552 editor
8553 .insert_snippet(&insertion_ranges, snippet, cx)
8554 .unwrap();
8555 assert_eq!(
8556 editor.text(cx),
8557 "
8558 a.f(one, two, three) b
8559 a.f(one, two, three) b
8560 a.f(one, two, three) b
8561 "
8562 .unindent()
8563 );
8564 assert_eq!(
8565 editor.selected_ranges::<Point>(cx),
8566 &[
8567 Point::new(0, 4)..Point::new(0, 7),
8568 Point::new(0, 14)..Point::new(0, 19),
8569 Point::new(1, 4)..Point::new(1, 7),
8570 Point::new(1, 14)..Point::new(1, 19),
8571 Point::new(2, 4)..Point::new(2, 7),
8572 Point::new(2, 14)..Point::new(2, 19),
8573 ]
8574 );
8575
8576 // Can't move earlier than the first tab stop
8577 editor.move_to_prev_snippet_tabstop(cx);
8578 assert_eq!(
8579 editor.selected_ranges::<Point>(cx),
8580 &[
8581 Point::new(0, 4)..Point::new(0, 7),
8582 Point::new(0, 14)..Point::new(0, 19),
8583 Point::new(1, 4)..Point::new(1, 7),
8584 Point::new(1, 14)..Point::new(1, 19),
8585 Point::new(2, 4)..Point::new(2, 7),
8586 Point::new(2, 14)..Point::new(2, 19),
8587 ]
8588 );
8589
8590 assert!(editor.move_to_next_snippet_tabstop(cx));
8591 assert_eq!(
8592 editor.selected_ranges::<Point>(cx),
8593 &[
8594 Point::new(0, 9)..Point::new(0, 12),
8595 Point::new(1, 9)..Point::new(1, 12),
8596 Point::new(2, 9)..Point::new(2, 12)
8597 ]
8598 );
8599
8600 editor.move_to_prev_snippet_tabstop(cx);
8601 assert_eq!(
8602 editor.selected_ranges::<Point>(cx),
8603 &[
8604 Point::new(0, 4)..Point::new(0, 7),
8605 Point::new(0, 14)..Point::new(0, 19),
8606 Point::new(1, 4)..Point::new(1, 7),
8607 Point::new(1, 14)..Point::new(1, 19),
8608 Point::new(2, 4)..Point::new(2, 7),
8609 Point::new(2, 14)..Point::new(2, 19),
8610 ]
8611 );
8612
8613 assert!(editor.move_to_next_snippet_tabstop(cx));
8614 assert!(editor.move_to_next_snippet_tabstop(cx));
8615 assert_eq!(
8616 editor.selected_ranges::<Point>(cx),
8617 &[
8618 Point::new(0, 20)..Point::new(0, 20),
8619 Point::new(1, 20)..Point::new(1, 20),
8620 Point::new(2, 20)..Point::new(2, 20)
8621 ]
8622 );
8623
8624 // As soon as the last tab stop is reached, snippet state is gone
8625 editor.move_to_prev_snippet_tabstop(cx);
8626 assert_eq!(
8627 editor.selected_ranges::<Point>(cx),
8628 &[
8629 Point::new(0, 20)..Point::new(0, 20),
8630 Point::new(1, 20)..Point::new(1, 20),
8631 Point::new(2, 20)..Point::new(2, 20)
8632 ]
8633 );
8634 });
8635 }
8636
8637 #[gpui::test]
8638 async fn test_completion(cx: &mut gpui::TestAppContext) {
8639 cx.update(populate_settings);
8640
8641 let (mut language_server_config, mut fake_servers) = LanguageServerConfig::fake();
8642 language_server_config.set_fake_capabilities(lsp::ServerCapabilities {
8643 completion_provider: Some(lsp::CompletionOptions {
8644 trigger_characters: Some(vec![".".to_string(), ":".to_string()]),
8645 ..Default::default()
8646 }),
8647 ..Default::default()
8648 });
8649 let language = Arc::new(Language::new(
8650 LanguageConfig {
8651 name: "Rust".into(),
8652 path_suffixes: vec!["rs".to_string()],
8653 language_server: Some(language_server_config),
8654 ..Default::default()
8655 },
8656 Some(tree_sitter_rust::language()),
8657 ));
8658
8659 let text = "
8660 one
8661 two
8662 three
8663 "
8664 .unindent();
8665
8666 let fs = FakeFs::new(cx.background().clone());
8667 fs.insert_file("/file.rs", text).await;
8668
8669 let project = Project::test(fs, cx);
8670 project.update(cx, |project, _| project.languages().add(language));
8671
8672 let worktree_id = project
8673 .update(cx, |project, cx| {
8674 project.find_or_create_local_worktree("/file.rs", true, cx)
8675 })
8676 .await
8677 .unwrap()
8678 .0
8679 .read_with(cx, |tree, _| tree.id());
8680 let buffer = project
8681 .update(cx, |project, cx| project.open_buffer((worktree_id, ""), cx))
8682 .await
8683 .unwrap();
8684 let mut fake_server = fake_servers.next().await.unwrap();
8685
8686 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
8687 let (_, editor) = cx.add_window(|cx| build_editor(buffer, cx));
8688
8689 editor.update(cx, |editor, cx| {
8690 editor.project = Some(project);
8691 editor.select_ranges([Point::new(0, 3)..Point::new(0, 3)], None, cx);
8692 editor.handle_input(&Input(".".to_string()), cx);
8693 });
8694
8695 handle_completion_request(
8696 &mut fake_server,
8697 "/file.rs",
8698 Point::new(0, 4),
8699 vec![
8700 (Point::new(0, 4)..Point::new(0, 4), "first_completion"),
8701 (Point::new(0, 4)..Point::new(0, 4), "second_completion"),
8702 ],
8703 )
8704 .await;
8705 editor
8706 .condition(&cx, |editor, _| editor.context_menu_visible())
8707 .await;
8708
8709 let apply_additional_edits = editor.update(cx, |editor, cx| {
8710 editor.move_down(&MoveDown, cx);
8711 let apply_additional_edits = editor
8712 .confirm_completion(&ConfirmCompletion(None), cx)
8713 .unwrap();
8714 assert_eq!(
8715 editor.text(cx),
8716 "
8717 one.second_completion
8718 two
8719 three
8720 "
8721 .unindent()
8722 );
8723 apply_additional_edits
8724 });
8725
8726 handle_resolve_completion_request(
8727 &mut fake_server,
8728 Some((Point::new(2, 5)..Point::new(2, 5), "\nadditional edit")),
8729 )
8730 .await;
8731 apply_additional_edits.await.unwrap();
8732 assert_eq!(
8733 editor.read_with(cx, |editor, cx| editor.text(cx)),
8734 "
8735 one.second_completion
8736 two
8737 three
8738 additional edit
8739 "
8740 .unindent()
8741 );
8742
8743 editor.update(cx, |editor, cx| {
8744 editor.select_ranges(
8745 [
8746 Point::new(1, 3)..Point::new(1, 3),
8747 Point::new(2, 5)..Point::new(2, 5),
8748 ],
8749 None,
8750 cx,
8751 );
8752
8753 editor.handle_input(&Input(" ".to_string()), cx);
8754 assert!(editor.context_menu.is_none());
8755 editor.handle_input(&Input("s".to_string()), cx);
8756 assert!(editor.context_menu.is_none());
8757 });
8758
8759 handle_completion_request(
8760 &mut fake_server,
8761 "/file.rs",
8762 Point::new(2, 7),
8763 vec![
8764 (Point::new(2, 6)..Point::new(2, 7), "fourth_completion"),
8765 (Point::new(2, 6)..Point::new(2, 7), "fifth_completion"),
8766 (Point::new(2, 6)..Point::new(2, 7), "sixth_completion"),
8767 ],
8768 )
8769 .await;
8770 editor
8771 .condition(&cx, |editor, _| editor.context_menu_visible())
8772 .await;
8773
8774 editor.update(cx, |editor, cx| {
8775 editor.handle_input(&Input("i".to_string()), cx);
8776 });
8777
8778 handle_completion_request(
8779 &mut fake_server,
8780 "/file.rs",
8781 Point::new(2, 8),
8782 vec![
8783 (Point::new(2, 6)..Point::new(2, 8), "fourth_completion"),
8784 (Point::new(2, 6)..Point::new(2, 8), "fifth_completion"),
8785 (Point::new(2, 6)..Point::new(2, 8), "sixth_completion"),
8786 ],
8787 )
8788 .await;
8789 editor
8790 .condition(&cx, |editor, _| editor.context_menu_visible())
8791 .await;
8792
8793 let apply_additional_edits = editor.update(cx, |editor, cx| {
8794 let apply_additional_edits = editor
8795 .confirm_completion(&ConfirmCompletion(None), cx)
8796 .unwrap();
8797 assert_eq!(
8798 editor.text(cx),
8799 "
8800 one.second_completion
8801 two sixth_completion
8802 three sixth_completion
8803 additional edit
8804 "
8805 .unindent()
8806 );
8807 apply_additional_edits
8808 });
8809 handle_resolve_completion_request(&mut fake_server, None).await;
8810 apply_additional_edits.await.unwrap();
8811
8812 async fn handle_completion_request(
8813 fake: &mut FakeLanguageServer,
8814 path: &'static str,
8815 position: Point,
8816 completions: Vec<(Range<Point>, &'static str)>,
8817 ) {
8818 fake.handle_request::<lsp::request::Completion, _>(move |params, _| {
8819 assert_eq!(
8820 params.text_document_position.text_document.uri,
8821 lsp::Url::from_file_path(path).unwrap()
8822 );
8823 assert_eq!(
8824 params.text_document_position.position,
8825 lsp::Position::new(position.row, position.column)
8826 );
8827 Some(lsp::CompletionResponse::Array(
8828 completions
8829 .iter()
8830 .map(|(range, new_text)| lsp::CompletionItem {
8831 label: new_text.to_string(),
8832 text_edit: Some(lsp::CompletionTextEdit::Edit(lsp::TextEdit {
8833 range: lsp::Range::new(
8834 lsp::Position::new(range.start.row, range.start.column),
8835 lsp::Position::new(range.start.row, range.start.column),
8836 ),
8837 new_text: new_text.to_string(),
8838 })),
8839 ..Default::default()
8840 })
8841 .collect(),
8842 ))
8843 })
8844 .next()
8845 .await;
8846 }
8847
8848 async fn handle_resolve_completion_request(
8849 fake: &mut FakeLanguageServer,
8850 edit: Option<(Range<Point>, &'static str)>,
8851 ) {
8852 fake.handle_request::<lsp::request::ResolveCompletionItem, _>(move |_, _| {
8853 lsp::CompletionItem {
8854 additional_text_edits: edit.clone().map(|(range, new_text)| {
8855 vec![lsp::TextEdit::new(
8856 lsp::Range::new(
8857 lsp::Position::new(range.start.row, range.start.column),
8858 lsp::Position::new(range.end.row, range.end.column),
8859 ),
8860 new_text.to_string(),
8861 )]
8862 }),
8863 ..Default::default()
8864 }
8865 })
8866 .next()
8867 .await;
8868 }
8869 }
8870
8871 #[gpui::test]
8872 async fn test_toggle_comment(cx: &mut gpui::TestAppContext) {
8873 cx.update(populate_settings);
8874 let language = Arc::new(Language::new(
8875 LanguageConfig {
8876 line_comment: Some("// ".to_string()),
8877 ..Default::default()
8878 },
8879 Some(tree_sitter_rust::language()),
8880 ));
8881
8882 let text = "
8883 fn a() {
8884 //b();
8885 // c();
8886 // d();
8887 }
8888 "
8889 .unindent();
8890
8891 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
8892 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
8893 let (_, view) = cx.add_window(|cx| build_editor(buffer, cx));
8894
8895 view.update(cx, |editor, cx| {
8896 // If multiple selections intersect a line, the line is only
8897 // toggled once.
8898 editor.select_display_ranges(
8899 &[
8900 DisplayPoint::new(1, 3)..DisplayPoint::new(2, 3),
8901 DisplayPoint::new(3, 5)..DisplayPoint::new(3, 6),
8902 ],
8903 cx,
8904 );
8905 editor.toggle_comments(&ToggleComments, cx);
8906 assert_eq!(
8907 editor.text(cx),
8908 "
8909 fn a() {
8910 b();
8911 c();
8912 d();
8913 }
8914 "
8915 .unindent()
8916 );
8917
8918 // The comment prefix is inserted at the same column for every line
8919 // in a selection.
8920 editor.select_display_ranges(&[DisplayPoint::new(1, 3)..DisplayPoint::new(3, 6)], cx);
8921 editor.toggle_comments(&ToggleComments, cx);
8922 assert_eq!(
8923 editor.text(cx),
8924 "
8925 fn a() {
8926 // b();
8927 // c();
8928 // d();
8929 }
8930 "
8931 .unindent()
8932 );
8933
8934 // If a selection ends at the beginning of a line, that line is not toggled.
8935 editor.select_display_ranges(&[DisplayPoint::new(2, 0)..DisplayPoint::new(3, 0)], cx);
8936 editor.toggle_comments(&ToggleComments, cx);
8937 assert_eq!(
8938 editor.text(cx),
8939 "
8940 fn a() {
8941 // b();
8942 c();
8943 // d();
8944 }
8945 "
8946 .unindent()
8947 );
8948 });
8949 }
8950
8951 #[gpui::test]
8952 fn test_editing_disjoint_excerpts(cx: &mut gpui::MutableAppContext) {
8953 populate_settings(cx);
8954 let buffer = cx.add_model(|cx| Buffer::new(0, sample_text(3, 4, 'a'), cx));
8955 let multibuffer = cx.add_model(|cx| {
8956 let mut multibuffer = MultiBuffer::new(0);
8957 multibuffer.push_excerpts(
8958 buffer.clone(),
8959 [
8960 Point::new(0, 0)..Point::new(0, 4),
8961 Point::new(1, 0)..Point::new(1, 4),
8962 ],
8963 cx,
8964 );
8965 multibuffer
8966 });
8967
8968 assert_eq!(multibuffer.read(cx).read(cx).text(), "aaaa\nbbbb");
8969
8970 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(multibuffer, cx));
8971 view.update(cx, |view, cx| {
8972 assert_eq!(view.text(cx), "aaaa\nbbbb");
8973 view.select_ranges(
8974 [
8975 Point::new(0, 0)..Point::new(0, 0),
8976 Point::new(1, 0)..Point::new(1, 0),
8977 ],
8978 None,
8979 cx,
8980 );
8981
8982 view.handle_input(&Input("X".to_string()), cx);
8983 assert_eq!(view.text(cx), "Xaaaa\nXbbbb");
8984 assert_eq!(
8985 view.selected_ranges(cx),
8986 [
8987 Point::new(0, 1)..Point::new(0, 1),
8988 Point::new(1, 1)..Point::new(1, 1),
8989 ]
8990 )
8991 });
8992 }
8993
8994 #[gpui::test]
8995 fn test_editing_overlapping_excerpts(cx: &mut gpui::MutableAppContext) {
8996 populate_settings(cx);
8997 let buffer = cx.add_model(|cx| Buffer::new(0, sample_text(3, 4, 'a'), cx));
8998 let multibuffer = cx.add_model(|cx| {
8999 let mut multibuffer = MultiBuffer::new(0);
9000 multibuffer.push_excerpts(
9001 buffer,
9002 [
9003 Point::new(0, 0)..Point::new(1, 4),
9004 Point::new(1, 0)..Point::new(2, 4),
9005 ],
9006 cx,
9007 );
9008 multibuffer
9009 });
9010
9011 assert_eq!(
9012 multibuffer.read(cx).read(cx).text(),
9013 "aaaa\nbbbb\nbbbb\ncccc"
9014 );
9015
9016 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(multibuffer, cx));
9017 view.update(cx, |view, cx| {
9018 view.select_ranges(
9019 [
9020 Point::new(1, 1)..Point::new(1, 1),
9021 Point::new(2, 3)..Point::new(2, 3),
9022 ],
9023 None,
9024 cx,
9025 );
9026
9027 view.handle_input(&Input("X".to_string()), cx);
9028 assert_eq!(view.text(cx), "aaaa\nbXbbXb\nbXbbXb\ncccc");
9029 assert_eq!(
9030 view.selected_ranges(cx),
9031 [
9032 Point::new(1, 2)..Point::new(1, 2),
9033 Point::new(2, 5)..Point::new(2, 5),
9034 ]
9035 );
9036
9037 view.newline(&Newline, cx);
9038 assert_eq!(view.text(cx), "aaaa\nbX\nbbX\nb\nbX\nbbX\nb\ncccc");
9039 assert_eq!(
9040 view.selected_ranges(cx),
9041 [
9042 Point::new(2, 0)..Point::new(2, 0),
9043 Point::new(6, 0)..Point::new(6, 0),
9044 ]
9045 );
9046 });
9047 }
9048
9049 #[gpui::test]
9050 fn test_refresh_selections(cx: &mut gpui::MutableAppContext) {
9051 populate_settings(cx);
9052 let buffer = cx.add_model(|cx| Buffer::new(0, sample_text(3, 4, 'a'), cx));
9053 let mut excerpt1_id = None;
9054 let multibuffer = cx.add_model(|cx| {
9055 let mut multibuffer = MultiBuffer::new(0);
9056 excerpt1_id = multibuffer
9057 .push_excerpts(
9058 buffer.clone(),
9059 [
9060 Point::new(0, 0)..Point::new(1, 4),
9061 Point::new(1, 0)..Point::new(2, 4),
9062 ],
9063 cx,
9064 )
9065 .into_iter()
9066 .next();
9067 multibuffer
9068 });
9069 assert_eq!(
9070 multibuffer.read(cx).read(cx).text(),
9071 "aaaa\nbbbb\nbbbb\ncccc"
9072 );
9073 let (_, editor) = cx.add_window(Default::default(), |cx| {
9074 let mut editor = build_editor(multibuffer.clone(), cx);
9075 let snapshot = editor.snapshot(cx);
9076 editor.select_ranges([Point::new(1, 3)..Point::new(1, 3)], None, cx);
9077 editor.begin_selection(Point::new(2, 1).to_display_point(&snapshot), true, 1, cx);
9078 assert_eq!(
9079 editor.selected_ranges(cx),
9080 [
9081 Point::new(1, 3)..Point::new(1, 3),
9082 Point::new(2, 1)..Point::new(2, 1),
9083 ]
9084 );
9085 editor
9086 });
9087
9088 // Refreshing selections is a no-op when excerpts haven't changed.
9089 editor.update(cx, |editor, cx| {
9090 editor.refresh_selections(cx);
9091 assert_eq!(
9092 editor.selected_ranges(cx),
9093 [
9094 Point::new(1, 3)..Point::new(1, 3),
9095 Point::new(2, 1)..Point::new(2, 1),
9096 ]
9097 );
9098 });
9099
9100 multibuffer.update(cx, |multibuffer, cx| {
9101 multibuffer.remove_excerpts([&excerpt1_id.unwrap()], cx);
9102 });
9103 editor.update(cx, |editor, cx| {
9104 // Removing an excerpt causes the first selection to become degenerate.
9105 assert_eq!(
9106 editor.selected_ranges(cx),
9107 [
9108 Point::new(0, 0)..Point::new(0, 0),
9109 Point::new(0, 1)..Point::new(0, 1)
9110 ]
9111 );
9112
9113 // Refreshing selections will relocate the first selection to the original buffer
9114 // location.
9115 editor.refresh_selections(cx);
9116 assert_eq!(
9117 editor.selected_ranges(cx),
9118 [
9119 Point::new(0, 1)..Point::new(0, 1),
9120 Point::new(0, 3)..Point::new(0, 3)
9121 ]
9122 );
9123 assert!(editor.pending_selection.is_some());
9124 });
9125 }
9126
9127 #[gpui::test]
9128 fn test_refresh_selections_while_selecting_with_mouse(cx: &mut gpui::MutableAppContext) {
9129 populate_settings(cx);
9130 let buffer = cx.add_model(|cx| Buffer::new(0, sample_text(3, 4, 'a'), cx));
9131 let mut excerpt1_id = None;
9132 let multibuffer = cx.add_model(|cx| {
9133 let mut multibuffer = MultiBuffer::new(0);
9134 excerpt1_id = multibuffer
9135 .push_excerpts(
9136 buffer.clone(),
9137 [
9138 Point::new(0, 0)..Point::new(1, 4),
9139 Point::new(1, 0)..Point::new(2, 4),
9140 ],
9141 cx,
9142 )
9143 .into_iter()
9144 .next();
9145 multibuffer
9146 });
9147 assert_eq!(
9148 multibuffer.read(cx).read(cx).text(),
9149 "aaaa\nbbbb\nbbbb\ncccc"
9150 );
9151 let (_, editor) = cx.add_window(Default::default(), |cx| {
9152 let mut editor = build_editor(multibuffer.clone(), cx);
9153 let snapshot = editor.snapshot(cx);
9154 editor.begin_selection(Point::new(1, 3).to_display_point(&snapshot), false, 1, cx);
9155 assert_eq!(
9156 editor.selected_ranges(cx),
9157 [Point::new(1, 3)..Point::new(1, 3)]
9158 );
9159 editor
9160 });
9161
9162 multibuffer.update(cx, |multibuffer, cx| {
9163 multibuffer.remove_excerpts([&excerpt1_id.unwrap()], cx);
9164 });
9165 editor.update(cx, |editor, cx| {
9166 assert_eq!(
9167 editor.selected_ranges(cx),
9168 [Point::new(0, 0)..Point::new(0, 0)]
9169 );
9170
9171 // Ensure we don't panic when selections are refreshed and that the pending selection is finalized.
9172 editor.refresh_selections(cx);
9173 assert_eq!(
9174 editor.selected_ranges(cx),
9175 [Point::new(0, 3)..Point::new(0, 3)]
9176 );
9177 assert!(editor.pending_selection.is_some());
9178 });
9179 }
9180
9181 #[gpui::test]
9182 async fn test_extra_newline_insertion(cx: &mut gpui::TestAppContext) {
9183 cx.update(populate_settings);
9184 let language = Arc::new(Language::new(
9185 LanguageConfig {
9186 brackets: vec![
9187 BracketPair {
9188 start: "{".to_string(),
9189 end: "}".to_string(),
9190 close: true,
9191 newline: true,
9192 },
9193 BracketPair {
9194 start: "/* ".to_string(),
9195 end: " */".to_string(),
9196 close: true,
9197 newline: true,
9198 },
9199 ],
9200 ..Default::default()
9201 },
9202 Some(tree_sitter_rust::language()),
9203 ));
9204
9205 let text = concat!(
9206 "{ }\n", // Suppress rustfmt
9207 " x\n", //
9208 " /* */\n", //
9209 "x\n", //
9210 "{{} }\n", //
9211 );
9212
9213 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
9214 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
9215 let (_, view) = cx.add_window(|cx| build_editor(buffer, cx));
9216 view.condition(&cx, |view, cx| !view.buffer.read(cx).is_parsing(cx))
9217 .await;
9218
9219 view.update(cx, |view, cx| {
9220 view.select_display_ranges(
9221 &[
9222 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 3),
9223 DisplayPoint::new(2, 5)..DisplayPoint::new(2, 5),
9224 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 4),
9225 ],
9226 cx,
9227 );
9228 view.newline(&Newline, cx);
9229
9230 assert_eq!(
9231 view.buffer().read(cx).read(cx).text(),
9232 concat!(
9233 "{ \n", // Suppress rustfmt
9234 "\n", //
9235 "}\n", //
9236 " x\n", //
9237 " /* \n", //
9238 " \n", //
9239 " */\n", //
9240 "x\n", //
9241 "{{} \n", //
9242 "}\n", //
9243 )
9244 );
9245 });
9246 }
9247
9248 #[gpui::test]
9249 fn test_highlighted_ranges(cx: &mut gpui::MutableAppContext) {
9250 let buffer = MultiBuffer::build_simple(&sample_text(16, 8, 'a'), cx);
9251 populate_settings(cx);
9252 let (_, editor) = cx.add_window(Default::default(), |cx| build_editor(buffer.clone(), cx));
9253
9254 editor.update(cx, |editor, cx| {
9255 struct Type1;
9256 struct Type2;
9257
9258 let buffer = buffer.read(cx).snapshot(cx);
9259
9260 let anchor_range = |range: Range<Point>| {
9261 buffer.anchor_after(range.start)..buffer.anchor_after(range.end)
9262 };
9263
9264 editor.highlight_background::<Type1>(
9265 vec![
9266 anchor_range(Point::new(2, 1)..Point::new(2, 3)),
9267 anchor_range(Point::new(4, 2)..Point::new(4, 4)),
9268 anchor_range(Point::new(6, 3)..Point::new(6, 5)),
9269 anchor_range(Point::new(8, 4)..Point::new(8, 6)),
9270 ],
9271 Color::red(),
9272 cx,
9273 );
9274 editor.highlight_background::<Type2>(
9275 vec![
9276 anchor_range(Point::new(3, 2)..Point::new(3, 5)),
9277 anchor_range(Point::new(5, 3)..Point::new(5, 6)),
9278 anchor_range(Point::new(7, 4)..Point::new(7, 7)),
9279 anchor_range(Point::new(9, 5)..Point::new(9, 8)),
9280 ],
9281 Color::green(),
9282 cx,
9283 );
9284
9285 let snapshot = editor.snapshot(cx);
9286 let mut highlighted_ranges = editor.background_highlights_in_range(
9287 anchor_range(Point::new(3, 4)..Point::new(7, 4)),
9288 &snapshot,
9289 );
9290 // Enforce a consistent ordering based on color without relying on the ordering of the
9291 // highlight's `TypeId` which is non-deterministic.
9292 highlighted_ranges.sort_unstable_by_key(|(_, color)| *color);
9293 assert_eq!(
9294 highlighted_ranges,
9295 &[
9296 (
9297 DisplayPoint::new(3, 2)..DisplayPoint::new(3, 5),
9298 Color::green(),
9299 ),
9300 (
9301 DisplayPoint::new(5, 3)..DisplayPoint::new(5, 6),
9302 Color::green(),
9303 ),
9304 (
9305 DisplayPoint::new(4, 2)..DisplayPoint::new(4, 4),
9306 Color::red(),
9307 ),
9308 (
9309 DisplayPoint::new(6, 3)..DisplayPoint::new(6, 5),
9310 Color::red(),
9311 ),
9312 ]
9313 );
9314 assert_eq!(
9315 editor.background_highlights_in_range(
9316 anchor_range(Point::new(5, 6)..Point::new(6, 4)),
9317 &snapshot,
9318 ),
9319 &[(
9320 DisplayPoint::new(6, 3)..DisplayPoint::new(6, 5),
9321 Color::red(),
9322 )]
9323 );
9324 });
9325 }
9326
9327 #[gpui::test]
9328 fn test_following(cx: &mut gpui::MutableAppContext) {
9329 let buffer = MultiBuffer::build_simple(&sample_text(16, 8, 'a'), cx);
9330 populate_settings(cx);
9331
9332 let (_, leader) = cx.add_window(Default::default(), |cx| build_editor(buffer.clone(), cx));
9333 let (_, follower) = cx.add_window(
9334 WindowOptions {
9335 bounds: WindowBounds::Fixed(RectF::from_points(vec2f(0., 0.), vec2f(10., 80.))),
9336 ..Default::default()
9337 },
9338 |cx| build_editor(buffer.clone(), cx),
9339 );
9340
9341 let pending_update = Rc::new(RefCell::new(None));
9342 follower.update(cx, {
9343 let update = pending_update.clone();
9344 |_, cx| {
9345 cx.subscribe(&leader, move |_, leader, event, cx| {
9346 leader
9347 .read(cx)
9348 .add_event_to_update_proto(event, &mut *update.borrow_mut(), cx);
9349 })
9350 .detach();
9351 }
9352 });
9353
9354 // Update the selections only
9355 leader.update(cx, |leader, cx| {
9356 leader.select_ranges([1..1], None, cx);
9357 });
9358 follower.update(cx, |follower, cx| {
9359 follower
9360 .apply_update_proto(pending_update.borrow_mut().take().unwrap(), cx)
9361 .unwrap();
9362 });
9363 assert_eq!(follower.read(cx).selected_ranges(cx), vec![1..1]);
9364
9365 // Update the scroll position only
9366 leader.update(cx, |leader, cx| {
9367 leader.set_scroll_position(vec2f(1.5, 3.5), cx);
9368 });
9369 follower.update(cx, |follower, cx| {
9370 follower
9371 .apply_update_proto(pending_update.borrow_mut().take().unwrap(), cx)
9372 .unwrap();
9373 });
9374 assert_eq!(
9375 follower.update(cx, |follower, cx| follower.scroll_position(cx)),
9376 vec2f(1.5, 3.5)
9377 );
9378
9379 // Update the selections and scroll position
9380 leader.update(cx, |leader, cx| {
9381 leader.select_ranges([0..0], None, cx);
9382 leader.request_autoscroll(Autoscroll::Newest, cx);
9383 leader.set_scroll_position(vec2f(1.5, 3.5), cx);
9384 });
9385 follower.update(cx, |follower, cx| {
9386 let initial_scroll_position = follower.scroll_position(cx);
9387 follower
9388 .apply_update_proto(pending_update.borrow_mut().take().unwrap(), cx)
9389 .unwrap();
9390 assert_eq!(follower.scroll_position(cx), initial_scroll_position);
9391 assert!(follower.autoscroll_request.is_some());
9392 });
9393 assert_eq!(follower.read(cx).selected_ranges(cx), vec![0..0]);
9394
9395 // Creating a pending selection that precedes another selection
9396 leader.update(cx, |leader, cx| {
9397 leader.select_ranges([1..1], None, cx);
9398 leader.begin_selection(DisplayPoint::new(0, 0), true, 1, cx);
9399 });
9400 follower.update(cx, |follower, cx| {
9401 follower
9402 .apply_update_proto(pending_update.borrow_mut().take().unwrap(), cx)
9403 .unwrap();
9404 });
9405 assert_eq!(follower.read(cx).selected_ranges(cx), vec![0..0, 1..1]);
9406
9407 // Extend the pending selection so that it surrounds another selection
9408 leader.update(cx, |leader, cx| {
9409 leader.extend_selection(DisplayPoint::new(0, 2), 1, cx);
9410 });
9411 follower.update(cx, |follower, cx| {
9412 follower
9413 .apply_update_proto(pending_update.borrow_mut().take().unwrap(), cx)
9414 .unwrap();
9415 });
9416 assert_eq!(follower.read(cx).selected_ranges(cx), vec![0..2]);
9417 }
9418
9419 #[test]
9420 fn test_combine_syntax_and_fuzzy_match_highlights() {
9421 let string = "abcdefghijklmnop";
9422 let syntax_ranges = [
9423 (
9424 0..3,
9425 HighlightStyle {
9426 color: Some(Color::red()),
9427 ..Default::default()
9428 },
9429 ),
9430 (
9431 4..8,
9432 HighlightStyle {
9433 color: Some(Color::green()),
9434 ..Default::default()
9435 },
9436 ),
9437 ];
9438 let match_indices = [4, 6, 7, 8];
9439 assert_eq!(
9440 combine_syntax_and_fuzzy_match_highlights(
9441 &string,
9442 Default::default(),
9443 syntax_ranges.into_iter(),
9444 &match_indices,
9445 ),
9446 &[
9447 (
9448 0..3,
9449 HighlightStyle {
9450 color: Some(Color::red()),
9451 ..Default::default()
9452 },
9453 ),
9454 (
9455 4..5,
9456 HighlightStyle {
9457 color: Some(Color::green()),
9458 weight: Some(fonts::Weight::BOLD),
9459 ..Default::default()
9460 },
9461 ),
9462 (
9463 5..6,
9464 HighlightStyle {
9465 color: Some(Color::green()),
9466 ..Default::default()
9467 },
9468 ),
9469 (
9470 6..8,
9471 HighlightStyle {
9472 color: Some(Color::green()),
9473 weight: Some(fonts::Weight::BOLD),
9474 ..Default::default()
9475 },
9476 ),
9477 (
9478 8..9,
9479 HighlightStyle {
9480 weight: Some(fonts::Weight::BOLD),
9481 ..Default::default()
9482 },
9483 ),
9484 ]
9485 );
9486 }
9487
9488 fn empty_range(row: usize, column: usize) -> Range<DisplayPoint> {
9489 let point = DisplayPoint::new(row as u32, column as u32);
9490 point..point
9491 }
9492
9493 fn build_editor(buffer: ModelHandle<MultiBuffer>, cx: &mut ViewContext<Editor>) -> Editor {
9494 Editor::new(EditorMode::Full, buffer, None, None, cx)
9495 }
9496
9497 fn populate_settings(cx: &mut gpui::MutableAppContext) {
9498 let settings = Settings::test(cx);
9499 cx.set_global(settings);
9500 }
9501
9502 fn assert_selection_ranges(
9503 marked_text: &str,
9504 selection_marker_pairs: Vec<(char, char)>,
9505 view: &mut Editor,
9506 cx: &mut ViewContext<Editor>,
9507 ) {
9508 let snapshot = view.snapshot(cx).display_snapshot;
9509 let mut marker_chars = Vec::new();
9510 for (start, end) in selection_marker_pairs.iter() {
9511 marker_chars.push(*start);
9512 marker_chars.push(*end);
9513 }
9514 let (_, markers) = marked_text_by(marked_text, marker_chars);
9515 let asserted_ranges: Vec<Range<DisplayPoint>> = selection_marker_pairs
9516 .iter()
9517 .map(|(start, end)| {
9518 let start = markers.get(start).unwrap()[0].to_display_point(&snapshot);
9519 let end = markers.get(end).unwrap()[0].to_display_point(&snapshot);
9520 start..end
9521 })
9522 .collect();
9523 assert_eq!(
9524 view.selected_display_ranges(cx),
9525 &asserted_ranges[..],
9526 "Assert selections are {}",
9527 marked_text
9528 );
9529 }
9530}
9531
9532trait RangeExt<T> {
9533 fn sorted(&self) -> Range<T>;
9534 fn to_inclusive(&self) -> RangeInclusive<T>;
9535}
9536
9537impl<T: Ord + Clone> RangeExt<T> for Range<T> {
9538 fn sorted(&self) -> Self {
9539 cmp::min(&self.start, &self.end).clone()..cmp::max(&self.start, &self.end).clone()
9540 }
9541
9542 fn to_inclusive(&self) -> RangeInclusive<T> {
9543 self.start.clone()..=self.end.clone()
9544 }
9545}