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, Direction);
72action!(Indent);
73action!(Outdent);
74action!(DeleteLine);
75action!(DeleteToPreviousWordStart);
76action!(DeleteToPreviousSubwordStart);
77action!(DeleteToNextWordEnd);
78action!(DeleteToNextSubwordEnd);
79action!(DeleteToBeginningOfLine);
80action!(DeleteToEndOfLine);
81action!(CutToEndOfLine);
82action!(DuplicateLine);
83action!(MoveLineUp);
84action!(MoveLineDown);
85action!(Cut);
86action!(Copy);
87action!(Paste);
88action!(Undo);
89action!(Redo);
90action!(MoveUp);
91action!(MoveDown);
92action!(MoveLeft);
93action!(MoveRight);
94action!(MoveToPreviousWordStart);
95action!(MoveToPreviousSubwordStart);
96action!(MoveToNextWordEnd);
97action!(MoveToNextSubwordEnd);
98action!(MoveToBeginningOfLine);
99action!(MoveToEndOfLine);
100action!(MoveToBeginning);
101action!(MoveToEnd);
102action!(SelectUp);
103action!(SelectDown);
104action!(SelectLeft);
105action!(SelectRight);
106action!(SelectToPreviousWordStart);
107action!(SelectToPreviousSubwordStart);
108action!(SelectToNextWordEnd);
109action!(SelectToNextSubwordEnd);
110action!(SelectToBeginningOfLine, bool);
111action!(SelectToEndOfLine, bool);
112action!(SelectToBeginning);
113action!(SelectToEnd);
114action!(SelectAll);
115action!(SelectLine);
116action!(SplitSelectionIntoLines);
117action!(AddSelectionAbove);
118action!(AddSelectionBelow);
119action!(SelectNext, bool);
120action!(ToggleComments);
121action!(SelectLargerSyntaxNode);
122action!(SelectSmallerSyntaxNode);
123action!(MoveToEnclosingBracket);
124action!(GoToDiagnostic, Direction);
125action!(GoToDefinition);
126action!(FindAllReferences);
127action!(Rename);
128action!(ConfirmRename);
129action!(PageUp);
130action!(PageDown);
131action!(Fold);
132action!(UnfoldLines);
133action!(FoldSelectedRanges);
134action!(Scroll, Vector2F);
135action!(Select, SelectPhase);
136action!(ShowCompletions);
137action!(ToggleCodeActions, bool);
138action!(ConfirmCompletion, Option<usize>);
139action!(ConfirmCodeAction, Option<usize>);
140action!(OpenExcerpts);
141
142enum DocumentHighlightRead {}
143enum DocumentHighlightWrite {}
144
145#[derive(Copy, Clone, PartialEq, Eq)]
146pub enum Direction {
147 Prev,
148 Next,
149}
150
151pub fn init(cx: &mut MutableAppContext) {
152 cx.add_bindings(vec![
153 Binding::new("escape", Cancel, Some("Editor")),
154 Binding::new("backspace", Backspace, Some("Editor")),
155 Binding::new("ctrl-h", Backspace, Some("Editor")),
156 Binding::new("delete", Delete, Some("Editor")),
157 Binding::new("ctrl-d", Delete, Some("Editor")),
158 Binding::new("enter", Newline, Some("Editor && mode == full")),
159 Binding::new(
160 "alt-enter",
161 Input("\n".into()),
162 Some("Editor && mode == auto_height"),
163 ),
164 Binding::new(
165 "enter",
166 ConfirmCompletion(None),
167 Some("Editor && showing_completions"),
168 ),
169 Binding::new(
170 "enter",
171 ConfirmCodeAction(None),
172 Some("Editor && showing_code_actions"),
173 ),
174 Binding::new("enter", ConfirmRename, Some("Editor && renaming")),
175 Binding::new("tab", Tab(Direction::Next), Some("Editor")),
176 Binding::new("shift-tab", Tab(Direction::Prev), Some("Editor")),
177 Binding::new(
178 "tab",
179 ConfirmCompletion(None),
180 Some("Editor && showing_completions"),
181 ),
182 Binding::new("ctrl-shift-K", DeleteLine, Some("Editor")),
183 Binding::new("alt-backspace", DeleteToPreviousWordStart, Some("Editor")),
184 Binding::new("alt-h", DeleteToPreviousWordStart, Some("Editor")),
185 Binding::new(
186 "ctrl-alt-backspace",
187 DeleteToPreviousSubwordStart,
188 Some("Editor"),
189 ),
190 Binding::new("ctrl-alt-h", DeleteToPreviousSubwordStart, Some("Editor")),
191 Binding::new("alt-delete", DeleteToNextWordEnd, Some("Editor")),
192 Binding::new("alt-d", DeleteToNextWordEnd, Some("Editor")),
193 Binding::new("ctrl-alt-delete", DeleteToNextSubwordEnd, Some("Editor")),
194 Binding::new("ctrl-alt-d", DeleteToNextSubwordEnd, Some("Editor")),
195 Binding::new("cmd-backspace", DeleteToBeginningOfLine, Some("Editor")),
196 Binding::new("cmd-delete", DeleteToEndOfLine, Some("Editor")),
197 Binding::new("ctrl-k", CutToEndOfLine, Some("Editor")),
198 Binding::new("cmd-shift-D", DuplicateLine, Some("Editor")),
199 Binding::new("ctrl-cmd-up", MoveLineUp, Some("Editor")),
200 Binding::new("ctrl-cmd-down", MoveLineDown, Some("Editor")),
201 Binding::new("cmd-x", Cut, Some("Editor")),
202 Binding::new("cmd-c", Copy, Some("Editor")),
203 Binding::new("cmd-v", Paste, Some("Editor")),
204 Binding::new("cmd-z", Undo, Some("Editor")),
205 Binding::new("cmd-shift-Z", Redo, Some("Editor")),
206 Binding::new("up", MoveUp, Some("Editor")),
207 Binding::new("down", MoveDown, Some("Editor")),
208 Binding::new("left", MoveLeft, Some("Editor")),
209 Binding::new("right", MoveRight, Some("Editor")),
210 Binding::new("ctrl-p", MoveUp, Some("Editor")),
211 Binding::new("ctrl-n", MoveDown, Some("Editor")),
212 Binding::new("ctrl-b", MoveLeft, Some("Editor")),
213 Binding::new("ctrl-f", MoveRight, Some("Editor")),
214 Binding::new("alt-left", MoveToPreviousWordStart, Some("Editor")),
215 Binding::new("alt-b", MoveToPreviousWordStart, Some("Editor")),
216 Binding::new("ctrl-alt-left", MoveToPreviousSubwordStart, Some("Editor")),
217 Binding::new("ctrl-alt-b", MoveToPreviousSubwordStart, Some("Editor")),
218 Binding::new("alt-right", MoveToNextWordEnd, Some("Editor")),
219 Binding::new("alt-f", MoveToNextWordEnd, Some("Editor")),
220 Binding::new("ctrl-alt-right", MoveToNextSubwordEnd, Some("Editor")),
221 Binding::new("ctrl-alt-f", MoveToNextSubwordEnd, Some("Editor")),
222 Binding::new("cmd-left", MoveToBeginningOfLine, Some("Editor")),
223 Binding::new("ctrl-a", MoveToBeginningOfLine, Some("Editor")),
224 Binding::new("cmd-right", MoveToEndOfLine, Some("Editor")),
225 Binding::new("ctrl-e", MoveToEndOfLine, Some("Editor")),
226 Binding::new("cmd-up", MoveToBeginning, Some("Editor")),
227 Binding::new("cmd-down", MoveToEnd, Some("Editor")),
228 Binding::new("shift-up", SelectUp, Some("Editor")),
229 Binding::new("ctrl-shift-P", SelectUp, Some("Editor")),
230 Binding::new("shift-down", SelectDown, Some("Editor")),
231 Binding::new("ctrl-shift-N", SelectDown, Some("Editor")),
232 Binding::new("shift-left", SelectLeft, Some("Editor")),
233 Binding::new("ctrl-shift-B", SelectLeft, Some("Editor")),
234 Binding::new("shift-right", SelectRight, Some("Editor")),
235 Binding::new("ctrl-shift-F", SelectRight, Some("Editor")),
236 Binding::new("alt-shift-left", SelectToPreviousWordStart, Some("Editor")),
237 Binding::new("alt-shift-B", SelectToPreviousWordStart, Some("Editor")),
238 Binding::new(
239 "ctrl-alt-shift-left",
240 SelectToPreviousSubwordStart,
241 Some("Editor"),
242 ),
243 Binding::new(
244 "ctrl-alt-shift-B",
245 SelectToPreviousSubwordStart,
246 Some("Editor"),
247 ),
248 Binding::new("alt-shift-right", SelectToNextWordEnd, Some("Editor")),
249 Binding::new("alt-shift-F", SelectToNextWordEnd, Some("Editor")),
250 Binding::new(
251 "cmd-shift-left",
252 SelectToBeginningOfLine(true),
253 Some("Editor"),
254 ),
255 Binding::new(
256 "ctrl-alt-shift-right",
257 SelectToNextSubwordEnd,
258 Some("Editor"),
259 ),
260 Binding::new("ctrl-alt-shift-F", SelectToNextSubwordEnd, Some("Editor")),
261 Binding::new(
262 "ctrl-shift-A",
263 SelectToBeginningOfLine(true),
264 Some("Editor"),
265 ),
266 Binding::new("cmd-shift-right", SelectToEndOfLine(true), Some("Editor")),
267 Binding::new("ctrl-shift-E", SelectToEndOfLine(true), Some("Editor")),
268 Binding::new("cmd-shift-up", SelectToBeginning, Some("Editor")),
269 Binding::new("cmd-shift-down", SelectToEnd, Some("Editor")),
270 Binding::new("cmd-a", SelectAll, Some("Editor")),
271 Binding::new("cmd-l", SelectLine, Some("Editor")),
272 Binding::new("cmd-shift-L", SplitSelectionIntoLines, Some("Editor")),
273 Binding::new("cmd-alt-up", AddSelectionAbove, Some("Editor")),
274 Binding::new("cmd-ctrl-p", AddSelectionAbove, Some("Editor")),
275 Binding::new("cmd-alt-down", AddSelectionBelow, Some("Editor")),
276 Binding::new("cmd-ctrl-n", AddSelectionBelow, Some("Editor")),
277 Binding::new("cmd-d", SelectNext(false), Some("Editor")),
278 Binding::new("cmd-k cmd-d", SelectNext(true), Some("Editor")),
279 Binding::new("cmd-/", ToggleComments, Some("Editor")),
280 Binding::new("alt-up", SelectLargerSyntaxNode, Some("Editor")),
281 Binding::new("ctrl-w", SelectLargerSyntaxNode, Some("Editor")),
282 Binding::new("alt-down", SelectSmallerSyntaxNode, Some("Editor")),
283 Binding::new("ctrl-shift-W", SelectSmallerSyntaxNode, Some("Editor")),
284 Binding::new("f8", GoToDiagnostic(Direction::Next), Some("Editor")),
285 Binding::new("shift-f8", GoToDiagnostic(Direction::Prev), Some("Editor")),
286 Binding::new("f2", Rename, Some("Editor")),
287 Binding::new("f12", GoToDefinition, Some("Editor")),
288 Binding::new("alt-shift-f12", FindAllReferences, Some("Editor")),
289 Binding::new("ctrl-m", MoveToEnclosingBracket, Some("Editor")),
290 Binding::new("pageup", PageUp, Some("Editor")),
291 Binding::new("pagedown", PageDown, Some("Editor")),
292 Binding::new("alt-cmd-[", Fold, Some("Editor")),
293 Binding::new("alt-cmd-]", UnfoldLines, Some("Editor")),
294 Binding::new("alt-cmd-f", FoldSelectedRanges, Some("Editor")),
295 Binding::new("ctrl-space", ShowCompletions, Some("Editor")),
296 Binding::new("cmd-.", ToggleCodeActions(false), Some("Editor")),
297 Binding::new("alt-enter", OpenExcerpts, Some("Editor")),
298 ]);
299
300 cx.add_action(Editor::open_new);
301 cx.add_action(|this: &mut Editor, action: &Scroll, cx| this.set_scroll_position(action.0, cx));
302 cx.add_action(Editor::select);
303 cx.add_action(Editor::cancel);
304 cx.add_action(Editor::handle_input);
305 cx.add_action(Editor::newline);
306 cx.add_action(Editor::backspace);
307 cx.add_action(Editor::delete);
308 cx.add_action(Editor::handle_tab);
309 cx.add_action(Editor::indent);
310 cx.add_action(Editor::outdent);
311 cx.add_action(Editor::delete_line);
312 cx.add_action(Editor::delete_to_previous_word_start);
313 cx.add_action(Editor::delete_to_previous_subword_start);
314 cx.add_action(Editor::delete_to_next_word_end);
315 cx.add_action(Editor::delete_to_next_subword_end);
316 cx.add_action(Editor::delete_to_beginning_of_line);
317 cx.add_action(Editor::delete_to_end_of_line);
318 cx.add_action(Editor::cut_to_end_of_line);
319 cx.add_action(Editor::duplicate_line);
320 cx.add_action(Editor::move_line_up);
321 cx.add_action(Editor::move_line_down);
322 cx.add_action(Editor::cut);
323 cx.add_action(Editor::copy);
324 cx.add_action(Editor::paste);
325 cx.add_action(Editor::undo);
326 cx.add_action(Editor::redo);
327 cx.add_action(Editor::move_up);
328 cx.add_action(Editor::move_down);
329 cx.add_action(Editor::move_left);
330 cx.add_action(Editor::move_right);
331 cx.add_action(Editor::move_to_previous_word_start);
332 cx.add_action(Editor::move_to_previous_subword_start);
333 cx.add_action(Editor::move_to_next_word_end);
334 cx.add_action(Editor::move_to_next_subword_end);
335 cx.add_action(Editor::move_to_beginning_of_line);
336 cx.add_action(Editor::move_to_end_of_line);
337 cx.add_action(Editor::move_to_beginning);
338 cx.add_action(Editor::move_to_end);
339 cx.add_action(Editor::select_up);
340 cx.add_action(Editor::select_down);
341 cx.add_action(Editor::select_left);
342 cx.add_action(Editor::select_right);
343 cx.add_action(Editor::select_to_previous_word_start);
344 cx.add_action(Editor::select_to_previous_subword_start);
345 cx.add_action(Editor::select_to_next_word_end);
346 cx.add_action(Editor::select_to_next_subword_end);
347 cx.add_action(Editor::select_to_beginning_of_line);
348 cx.add_action(Editor::select_to_end_of_line);
349 cx.add_action(Editor::select_to_beginning);
350 cx.add_action(Editor::select_to_end);
351 cx.add_action(Editor::select_all);
352 cx.add_action(Editor::select_line);
353 cx.add_action(Editor::split_selection_into_lines);
354 cx.add_action(Editor::add_selection_above);
355 cx.add_action(Editor::add_selection_below);
356 cx.add_action(Editor::select_next);
357 cx.add_action(Editor::toggle_comments);
358 cx.add_action(Editor::select_larger_syntax_node);
359 cx.add_action(Editor::select_smaller_syntax_node);
360 cx.add_action(Editor::move_to_enclosing_bracket);
361 cx.add_action(Editor::go_to_diagnostic);
362 cx.add_action(Editor::go_to_definition);
363 cx.add_action(Editor::page_up);
364 cx.add_action(Editor::page_down);
365 cx.add_action(Editor::fold);
366 cx.add_action(Editor::unfold_lines);
367 cx.add_action(Editor::fold_selected_ranges);
368 cx.add_action(Editor::show_completions);
369 cx.add_action(Editor::toggle_code_actions);
370 cx.add_action(Editor::open_excerpts);
371 cx.add_async_action(Editor::confirm_completion);
372 cx.add_async_action(Editor::confirm_code_action);
373 cx.add_async_action(Editor::rename);
374 cx.add_async_action(Editor::confirm_rename);
375 cx.add_async_action(Editor::find_all_references);
376
377 workspace::register_project_item::<Editor>(cx);
378 workspace::register_followable_item::<Editor>(cx);
379}
380
381trait InvalidationRegion {
382 fn ranges(&self) -> &[Range<Anchor>];
383}
384
385#[derive(Clone, Debug)]
386pub enum SelectPhase {
387 Begin {
388 position: DisplayPoint,
389 add: bool,
390 click_count: usize,
391 },
392 BeginColumnar {
393 position: DisplayPoint,
394 overshoot: u32,
395 },
396 Extend {
397 position: DisplayPoint,
398 click_count: usize,
399 },
400 Update {
401 position: DisplayPoint,
402 overshoot: u32,
403 scroll_position: Vector2F,
404 },
405 End,
406}
407
408#[derive(Clone, Debug)]
409pub enum SelectMode {
410 Character,
411 Word(Range<Anchor>),
412 Line(Range<Anchor>),
413 All,
414}
415
416#[derive(PartialEq, Eq)]
417pub enum Autoscroll {
418 Fit,
419 Center,
420 Newest,
421}
422
423#[derive(Copy, Clone, PartialEq, Eq)]
424pub enum EditorMode {
425 SingleLine,
426 AutoHeight { max_lines: usize },
427 Full,
428}
429
430#[derive(Clone)]
431pub enum SoftWrap {
432 None,
433 EditorWidth,
434 Column(u32),
435}
436
437#[derive(Clone)]
438pub struct EditorStyle {
439 pub text: TextStyle,
440 pub placeholder_text: Option<TextStyle>,
441 pub theme: theme::Editor,
442}
443
444type CompletionId = usize;
445
446pub type GetFieldEditorTheme = fn(&theme::Theme) -> theme::FieldEditor;
447
448type OverrideTextStyle = dyn Fn(&EditorStyle) -> Option<HighlightStyle>;
449
450pub struct Editor {
451 handle: WeakViewHandle<Self>,
452 buffer: ModelHandle<MultiBuffer>,
453 display_map: ModelHandle<DisplayMap>,
454 next_selection_id: usize,
455 selections: Arc<[Selection<Anchor>]>,
456 pending_selection: Option<PendingSelection>,
457 columnar_selection_tail: Option<Anchor>,
458 add_selections_state: Option<AddSelectionsState>,
459 select_next_state: Option<SelectNextState>,
460 selection_history:
461 HashMap<TransactionId, (Arc<[Selection<Anchor>]>, Option<Arc<[Selection<Anchor>]>>)>,
462 autoclose_stack: InvalidationStack<BracketPairState>,
463 snippet_stack: InvalidationStack<SnippetState>,
464 select_larger_syntax_node_stack: Vec<Box<[Selection<usize>]>>,
465 active_diagnostics: Option<ActiveDiagnosticGroup>,
466 scroll_position: Vector2F,
467 scroll_top_anchor: Anchor,
468 autoscroll_request: Option<(Autoscroll, bool)>,
469 soft_wrap_mode_override: Option<settings::SoftWrap>,
470 get_field_editor_theme: Option<GetFieldEditorTheme>,
471 override_text_style: Option<Box<OverrideTextStyle>>,
472 project: Option<ModelHandle<Project>>,
473 focused: bool,
474 show_local_cursors: bool,
475 show_local_selections: bool,
476 blink_epoch: usize,
477 blinking_paused: bool,
478 mode: EditorMode,
479 vertical_scroll_margin: f32,
480 placeholder_text: Option<Arc<str>>,
481 highlighted_rows: Option<Range<u32>>,
482 background_highlights: BTreeMap<TypeId, (Color, Vec<Range<Anchor>>)>,
483 nav_history: Option<ItemNavHistory>,
484 context_menu: Option<ContextMenu>,
485 completion_tasks: Vec<(CompletionId, Task<Option<()>>)>,
486 next_completion_id: CompletionId,
487 available_code_actions: Option<(ModelHandle<Buffer>, Arc<[CodeAction]>)>,
488 code_actions_task: Option<Task<()>>,
489 document_highlights_task: Option<Task<()>>,
490 pending_rename: Option<RenameState>,
491 searchable: bool,
492 cursor_shape: CursorShape,
493 keymap_context_layers: BTreeMap<TypeId, gpui::keymap::Context>,
494 input_enabled: bool,
495 leader_replica_id: Option<u16>,
496}
497
498pub struct EditorSnapshot {
499 pub mode: EditorMode,
500 pub display_snapshot: DisplaySnapshot,
501 pub placeholder_text: Option<Arc<str>>,
502 is_focused: bool,
503 scroll_position: Vector2F,
504 scroll_top_anchor: Anchor,
505}
506
507#[derive(Clone)]
508pub struct PendingSelection {
509 selection: Selection<Anchor>,
510 mode: SelectMode,
511}
512
513struct AddSelectionsState {
514 above: bool,
515 stack: Vec<usize>,
516}
517
518struct SelectNextState {
519 query: AhoCorasick,
520 wordwise: bool,
521 done: bool,
522}
523
524struct BracketPairState {
525 ranges: Vec<Range<Anchor>>,
526 pair: BracketPair,
527}
528
529struct SnippetState {
530 ranges: Vec<Vec<Range<Anchor>>>,
531 active_index: usize,
532}
533
534pub struct RenameState {
535 pub range: Range<Anchor>,
536 pub old_name: String,
537 pub editor: ViewHandle<Editor>,
538 block_id: BlockId,
539}
540
541struct InvalidationStack<T>(Vec<T>);
542
543enum ContextMenu {
544 Completions(CompletionsMenu),
545 CodeActions(CodeActionsMenu),
546}
547
548impl ContextMenu {
549 fn select_prev(&mut self, cx: &mut ViewContext<Editor>) -> bool {
550 if self.visible() {
551 match self {
552 ContextMenu::Completions(menu) => menu.select_prev(cx),
553 ContextMenu::CodeActions(menu) => menu.select_prev(cx),
554 }
555 true
556 } else {
557 false
558 }
559 }
560
561 fn select_next(&mut self, cx: &mut ViewContext<Editor>) -> bool {
562 if self.visible() {
563 match self {
564 ContextMenu::Completions(menu) => menu.select_next(cx),
565 ContextMenu::CodeActions(menu) => menu.select_next(cx),
566 }
567 true
568 } else {
569 false
570 }
571 }
572
573 fn visible(&self) -> bool {
574 match self {
575 ContextMenu::Completions(menu) => menu.visible(),
576 ContextMenu::CodeActions(menu) => menu.visible(),
577 }
578 }
579
580 fn render(
581 &self,
582 cursor_position: DisplayPoint,
583 style: EditorStyle,
584 cx: &AppContext,
585 ) -> (DisplayPoint, ElementBox) {
586 match self {
587 ContextMenu::Completions(menu) => (cursor_position, menu.render(style, cx)),
588 ContextMenu::CodeActions(menu) => menu.render(cursor_position, style),
589 }
590 }
591}
592
593struct CompletionsMenu {
594 id: CompletionId,
595 initial_position: Anchor,
596 buffer: ModelHandle<Buffer>,
597 completions: Arc<[Completion]>,
598 match_candidates: Vec<StringMatchCandidate>,
599 matches: Arc<[StringMatch]>,
600 selected_item: usize,
601 list: UniformListState,
602}
603
604impl CompletionsMenu {
605 fn select_prev(&mut self, cx: &mut ViewContext<Editor>) {
606 if self.selected_item > 0 {
607 self.selected_item -= 1;
608 self.list.scroll_to(ScrollTarget::Show(self.selected_item));
609 }
610 cx.notify();
611 }
612
613 fn select_next(&mut self, cx: &mut ViewContext<Editor>) {
614 if self.selected_item + 1 < self.matches.len() {
615 self.selected_item += 1;
616 self.list.scroll_to(ScrollTarget::Show(self.selected_item));
617 }
618 cx.notify();
619 }
620
621 fn visible(&self) -> bool {
622 !self.matches.is_empty()
623 }
624
625 fn render(&self, style: EditorStyle, _: &AppContext) -> ElementBox {
626 enum CompletionTag {}
627
628 let completions = self.completions.clone();
629 let matches = self.matches.clone();
630 let selected_item = self.selected_item;
631 let container_style = style.autocomplete.container;
632 UniformList::new(self.list.clone(), matches.len(), move |range, items, cx| {
633 let start_ix = range.start;
634 for (ix, mat) in matches[range].iter().enumerate() {
635 let completion = &completions[mat.candidate_id];
636 let item_ix = start_ix + ix;
637 items.push(
638 MouseEventHandler::new::<CompletionTag, _, _>(
639 mat.candidate_id,
640 cx,
641 |state, _| {
642 let item_style = if item_ix == selected_item {
643 style.autocomplete.selected_item
644 } else if state.hovered {
645 style.autocomplete.hovered_item
646 } else {
647 style.autocomplete.item
648 };
649
650 Text::new(completion.label.text.clone(), style.text.clone())
651 .with_soft_wrap(false)
652 .with_highlights(combine_syntax_and_fuzzy_match_highlights(
653 &completion.label.text,
654 style.text.color.into(),
655 styled_runs_for_code_label(&completion.label, &style.syntax),
656 &mat.positions,
657 ))
658 .contained()
659 .with_style(item_style)
660 .boxed()
661 },
662 )
663 .with_cursor_style(CursorStyle::PointingHand)
664 .on_mouse_down(move |cx| {
665 cx.dispatch_action(ConfirmCompletion(Some(item_ix)));
666 })
667 .boxed(),
668 );
669 }
670 })
671 .with_width_from_item(
672 self.matches
673 .iter()
674 .enumerate()
675 .max_by_key(|(_, mat)| {
676 self.completions[mat.candidate_id]
677 .label
678 .text
679 .chars()
680 .count()
681 })
682 .map(|(ix, _)| ix),
683 )
684 .contained()
685 .with_style(container_style)
686 .boxed()
687 }
688
689 pub async fn filter(&mut self, query: Option<&str>, executor: Arc<executor::Background>) {
690 let mut matches = if let Some(query) = query {
691 fuzzy::match_strings(
692 &self.match_candidates,
693 query,
694 false,
695 100,
696 &Default::default(),
697 executor,
698 )
699 .await
700 } else {
701 self.match_candidates
702 .iter()
703 .enumerate()
704 .map(|(candidate_id, candidate)| StringMatch {
705 candidate_id,
706 score: Default::default(),
707 positions: Default::default(),
708 string: candidate.string.clone(),
709 })
710 .collect()
711 };
712 matches.sort_unstable_by_key(|mat| {
713 (
714 Reverse(OrderedFloat(mat.score)),
715 self.completions[mat.candidate_id].sort_key(),
716 )
717 });
718
719 for mat in &mut matches {
720 let filter_start = self.completions[mat.candidate_id].label.filter_range.start;
721 for position in &mut mat.positions {
722 *position += filter_start;
723 }
724 }
725
726 self.matches = matches.into();
727 }
728}
729
730#[derive(Clone)]
731struct CodeActionsMenu {
732 actions: Arc<[CodeAction]>,
733 buffer: ModelHandle<Buffer>,
734 selected_item: usize,
735 list: UniformListState,
736 deployed_from_indicator: bool,
737}
738
739impl CodeActionsMenu {
740 fn select_prev(&mut self, cx: &mut ViewContext<Editor>) {
741 if self.selected_item > 0 {
742 self.selected_item -= 1;
743 cx.notify()
744 }
745 }
746
747 fn select_next(&mut self, cx: &mut ViewContext<Editor>) {
748 if self.selected_item + 1 < self.actions.len() {
749 self.selected_item += 1;
750 cx.notify()
751 }
752 }
753
754 fn visible(&self) -> bool {
755 !self.actions.is_empty()
756 }
757
758 fn render(
759 &self,
760 mut cursor_position: DisplayPoint,
761 style: EditorStyle,
762 ) -> (DisplayPoint, ElementBox) {
763 enum ActionTag {}
764
765 let container_style = style.autocomplete.container;
766 let actions = self.actions.clone();
767 let selected_item = self.selected_item;
768 let element =
769 UniformList::new(self.list.clone(), actions.len(), move |range, items, cx| {
770 let start_ix = range.start;
771 for (ix, action) in actions[range].iter().enumerate() {
772 let item_ix = start_ix + ix;
773 items.push(
774 MouseEventHandler::new::<ActionTag, _, _>(item_ix, cx, |state, _| {
775 let item_style = if item_ix == selected_item {
776 style.autocomplete.selected_item
777 } else if state.hovered {
778 style.autocomplete.hovered_item
779 } else {
780 style.autocomplete.item
781 };
782
783 Text::new(action.lsp_action.title.clone(), style.text.clone())
784 .with_soft_wrap(false)
785 .contained()
786 .with_style(item_style)
787 .boxed()
788 })
789 .with_cursor_style(CursorStyle::PointingHand)
790 .on_mouse_down(move |cx| {
791 cx.dispatch_action(ConfirmCodeAction(Some(item_ix)));
792 })
793 .boxed(),
794 );
795 }
796 })
797 .with_width_from_item(
798 self.actions
799 .iter()
800 .enumerate()
801 .max_by_key(|(_, action)| action.lsp_action.title.chars().count())
802 .map(|(ix, _)| ix),
803 )
804 .contained()
805 .with_style(container_style)
806 .boxed();
807
808 if self.deployed_from_indicator {
809 *cursor_position.column_mut() = 0;
810 }
811
812 (cursor_position, element)
813 }
814}
815
816#[derive(Debug)]
817struct ActiveDiagnosticGroup {
818 primary_range: Range<Anchor>,
819 primary_message: String,
820 blocks: HashMap<BlockId, Diagnostic>,
821 is_valid: bool,
822}
823
824#[derive(Serialize, Deserialize)]
825struct ClipboardSelection {
826 len: usize,
827 is_entire_line: bool,
828}
829
830pub struct NavigationData {
831 anchor: Anchor,
832 offset: usize,
833}
834
835pub struct EditorCreated(pub ViewHandle<Editor>);
836
837impl Editor {
838 pub fn single_line(
839 field_editor_style: Option<GetFieldEditorTheme>,
840 cx: &mut ViewContext<Self>,
841 ) -> Self {
842 let buffer = cx.add_model(|cx| Buffer::new(0, String::new(), cx));
843 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
844 Self::new(EditorMode::SingleLine, buffer, None, field_editor_style, cx)
845 }
846
847 pub fn auto_height(
848 max_lines: usize,
849 field_editor_style: Option<GetFieldEditorTheme>,
850 cx: &mut ViewContext<Self>,
851 ) -> Self {
852 let buffer = cx.add_model(|cx| Buffer::new(0, String::new(), cx));
853 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
854 Self::new(
855 EditorMode::AutoHeight { max_lines },
856 buffer,
857 None,
858 field_editor_style,
859 cx,
860 )
861 }
862
863 pub fn for_buffer(
864 buffer: ModelHandle<Buffer>,
865 project: Option<ModelHandle<Project>>,
866 cx: &mut ViewContext<Self>,
867 ) -> Self {
868 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
869 Self::new(EditorMode::Full, buffer, project, None, cx)
870 }
871
872 pub fn for_multibuffer(
873 buffer: ModelHandle<MultiBuffer>,
874 project: Option<ModelHandle<Project>>,
875 cx: &mut ViewContext<Self>,
876 ) -> Self {
877 Self::new(EditorMode::Full, buffer, project, None, cx)
878 }
879
880 pub fn clone(&self, cx: &mut ViewContext<Self>) -> Self {
881 let mut clone = Self::new(
882 self.mode,
883 self.buffer.clone(),
884 self.project.clone(),
885 self.get_field_editor_theme,
886 cx,
887 );
888 clone.scroll_position = self.scroll_position;
889 clone.scroll_top_anchor = self.scroll_top_anchor.clone();
890 clone.searchable = self.searchable;
891 clone
892 }
893
894 fn new(
895 mode: EditorMode,
896 buffer: ModelHandle<MultiBuffer>,
897 project: Option<ModelHandle<Project>>,
898 get_field_editor_theme: Option<GetFieldEditorTheme>,
899 cx: &mut ViewContext<Self>,
900 ) -> Self {
901 let display_map = cx.add_model(|cx| {
902 let settings = cx.global::<Settings>();
903 let style = build_style(&*settings, get_field_editor_theme, None, cx);
904 DisplayMap::new(
905 buffer.clone(),
906 settings.tab_size,
907 style.text.font_id,
908 style.text.font_size,
909 None,
910 2,
911 1,
912 cx,
913 )
914 });
915 cx.observe(&buffer, Self::on_buffer_changed).detach();
916 cx.subscribe(&buffer, Self::on_buffer_event).detach();
917 cx.observe(&display_map, Self::on_display_map_changed)
918 .detach();
919
920 let mut this = Self {
921 handle: cx.weak_handle(),
922 buffer,
923 display_map,
924 selections: Arc::from([]),
925 pending_selection: Some(PendingSelection {
926 selection: Selection {
927 id: 0,
928 start: Anchor::min(),
929 end: Anchor::min(),
930 reversed: false,
931 goal: SelectionGoal::None,
932 },
933 mode: SelectMode::Character,
934 }),
935 columnar_selection_tail: None,
936 next_selection_id: 1,
937 add_selections_state: None,
938 select_next_state: None,
939 selection_history: Default::default(),
940 autoclose_stack: Default::default(),
941 snippet_stack: Default::default(),
942 select_larger_syntax_node_stack: Vec::new(),
943 active_diagnostics: None,
944 soft_wrap_mode_override: None,
945 get_field_editor_theme,
946 project,
947 scroll_position: Vector2F::zero(),
948 scroll_top_anchor: Anchor::min(),
949 autoscroll_request: None,
950 focused: false,
951 show_local_cursors: false,
952 show_local_selections: true,
953 blink_epoch: 0,
954 blinking_paused: false,
955 mode,
956 vertical_scroll_margin: 3.0,
957 placeholder_text: None,
958 highlighted_rows: None,
959 background_highlights: Default::default(),
960 nav_history: None,
961 context_menu: None,
962 completion_tasks: Default::default(),
963 next_completion_id: 0,
964 available_code_actions: Default::default(),
965 code_actions_task: Default::default(),
966 document_highlights_task: Default::default(),
967 pending_rename: Default::default(),
968 searchable: true,
969 override_text_style: None,
970 cursor_shape: Default::default(),
971 keymap_context_layers: Default::default(),
972 input_enabled: true,
973 leader_replica_id: None,
974 };
975 this.end_selection(cx);
976
977 let editor_created_event = EditorCreated(cx.handle());
978 cx.emit_global(editor_created_event);
979
980 this
981 }
982
983 pub fn open_new(
984 workspace: &mut Workspace,
985 _: &workspace::OpenNew,
986 cx: &mut ViewContext<Workspace>,
987 ) {
988 let project = workspace.project().clone();
989 if project.read(cx).is_remote() {
990 cx.propagate_action();
991 } else if let Some(buffer) = project
992 .update(cx, |project, cx| project.create_buffer(cx))
993 .log_err()
994 {
995 workspace.add_item(
996 Box::new(cx.add_view(|cx| Editor::for_buffer(buffer, Some(project.clone()), cx))),
997 cx,
998 );
999 }
1000 }
1001
1002 pub fn replica_id(&self, cx: &AppContext) -> ReplicaId {
1003 self.buffer.read(cx).replica_id()
1004 }
1005
1006 pub fn buffer(&self) -> &ModelHandle<MultiBuffer> {
1007 &self.buffer
1008 }
1009
1010 pub fn title(&self, cx: &AppContext) -> String {
1011 self.buffer().read(cx).title(cx)
1012 }
1013
1014 pub fn snapshot(&mut self, cx: &mut MutableAppContext) -> EditorSnapshot {
1015 EditorSnapshot {
1016 mode: self.mode,
1017 display_snapshot: self.display_map.update(cx, |map, cx| map.snapshot(cx)),
1018 scroll_position: self.scroll_position,
1019 scroll_top_anchor: self.scroll_top_anchor.clone(),
1020 placeholder_text: self.placeholder_text.clone(),
1021 is_focused: self
1022 .handle
1023 .upgrade(cx)
1024 .map_or(false, |handle| handle.is_focused(cx)),
1025 }
1026 }
1027
1028 pub fn language<'a>(&self, cx: &'a AppContext) -> Option<&'a Arc<Language>> {
1029 self.buffer.read(cx).language(cx)
1030 }
1031
1032 fn style(&self, cx: &AppContext) -> EditorStyle {
1033 build_style(
1034 cx.global::<Settings>(),
1035 self.get_field_editor_theme,
1036 self.override_text_style.as_deref(),
1037 cx,
1038 )
1039 }
1040
1041 pub fn mode(&self) -> EditorMode {
1042 self.mode
1043 }
1044
1045 pub fn set_placeholder_text(
1046 &mut self,
1047 placeholder_text: impl Into<Arc<str>>,
1048 cx: &mut ViewContext<Self>,
1049 ) {
1050 self.placeholder_text = Some(placeholder_text.into());
1051 cx.notify();
1052 }
1053
1054 pub fn set_vertical_scroll_margin(&mut self, margin_rows: usize, cx: &mut ViewContext<Self>) {
1055 self.vertical_scroll_margin = margin_rows as f32;
1056 cx.notify();
1057 }
1058
1059 pub fn set_scroll_position(&mut self, scroll_position: Vector2F, cx: &mut ViewContext<Self>) {
1060 self.set_scroll_position_internal(scroll_position, true, cx);
1061 }
1062
1063 fn set_scroll_position_internal(
1064 &mut self,
1065 scroll_position: Vector2F,
1066 local: bool,
1067 cx: &mut ViewContext<Self>,
1068 ) {
1069 let map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1070
1071 if scroll_position.y() == 0. {
1072 self.scroll_top_anchor = Anchor::min();
1073 self.scroll_position = scroll_position;
1074 } else {
1075 let scroll_top_buffer_offset =
1076 DisplayPoint::new(scroll_position.y() as u32, 0).to_offset(&map, Bias::Right);
1077 let anchor = map
1078 .buffer_snapshot
1079 .anchor_at(scroll_top_buffer_offset, Bias::Right);
1080 self.scroll_position = vec2f(
1081 scroll_position.x(),
1082 scroll_position.y() - anchor.to_display_point(&map).row() as f32,
1083 );
1084 self.scroll_top_anchor = anchor;
1085 }
1086
1087 cx.emit(Event::ScrollPositionChanged { local });
1088 cx.notify();
1089 }
1090
1091 fn set_scroll_top_anchor(
1092 &mut self,
1093 anchor: Anchor,
1094 position: Vector2F,
1095 cx: &mut ViewContext<Self>,
1096 ) {
1097 self.scroll_top_anchor = anchor;
1098 self.scroll_position = position;
1099 cx.emit(Event::ScrollPositionChanged { local: false });
1100 cx.notify();
1101 }
1102
1103 pub fn set_cursor_shape(&mut self, cursor_shape: CursorShape, cx: &mut ViewContext<Self>) {
1104 self.cursor_shape = cursor_shape;
1105 cx.notify();
1106 }
1107
1108 pub fn set_clip_at_line_ends(&mut self, clip: bool, cx: &mut ViewContext<Self>) {
1109 self.display_map
1110 .update(cx, |map, _| map.clip_at_line_ends = clip);
1111 }
1112
1113 pub fn set_keymap_context_layer<Tag: 'static>(&mut self, context: gpui::keymap::Context) {
1114 self.keymap_context_layers
1115 .insert(TypeId::of::<Tag>(), context);
1116 }
1117
1118 pub fn remove_keymap_context_layer<Tag: 'static>(&mut self) {
1119 self.keymap_context_layers.remove(&TypeId::of::<Tag>());
1120 }
1121
1122 pub fn set_input_enabled(&mut self, input_enabled: bool) {
1123 self.input_enabled = input_enabled;
1124 }
1125
1126 pub fn scroll_position(&self, cx: &mut ViewContext<Self>) -> Vector2F {
1127 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1128 compute_scroll_position(&display_map, self.scroll_position, &self.scroll_top_anchor)
1129 }
1130
1131 pub fn clamp_scroll_left(&mut self, max: f32) -> bool {
1132 if max < self.scroll_position.x() {
1133 self.scroll_position.set_x(max);
1134 true
1135 } else {
1136 false
1137 }
1138 }
1139
1140 pub fn autoscroll_vertically(
1141 &mut self,
1142 viewport_height: f32,
1143 line_height: f32,
1144 cx: &mut ViewContext<Self>,
1145 ) -> bool {
1146 let visible_lines = viewport_height / line_height;
1147 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1148 let mut scroll_position =
1149 compute_scroll_position(&display_map, self.scroll_position, &self.scroll_top_anchor);
1150 let max_scroll_top = if matches!(self.mode, EditorMode::AutoHeight { .. }) {
1151 (display_map.max_point().row() as f32 - visible_lines + 1.).max(0.)
1152 } else {
1153 display_map.max_point().row().saturating_sub(1) as f32
1154 };
1155 if scroll_position.y() > max_scroll_top {
1156 scroll_position.set_y(max_scroll_top);
1157 self.set_scroll_position(scroll_position, cx);
1158 }
1159
1160 let (autoscroll, local) = if let Some(autoscroll) = self.autoscroll_request.take() {
1161 autoscroll
1162 } else {
1163 return false;
1164 };
1165
1166 let first_cursor_top;
1167 let last_cursor_bottom;
1168 if let Some(highlighted_rows) = &self.highlighted_rows {
1169 first_cursor_top = highlighted_rows.start as f32;
1170 last_cursor_bottom = first_cursor_top + 1.;
1171 } else if autoscroll == Autoscroll::Newest {
1172 let newest_selection =
1173 self.newest_selection_with_snapshot::<Point>(&display_map.buffer_snapshot);
1174 first_cursor_top = newest_selection.head().to_display_point(&display_map).row() as f32;
1175 last_cursor_bottom = first_cursor_top + 1.;
1176 } else {
1177 let selections = self.local_selections::<Point>(cx);
1178 first_cursor_top = selections
1179 .first()
1180 .unwrap()
1181 .head()
1182 .to_display_point(&display_map)
1183 .row() as f32;
1184 last_cursor_bottom = selections
1185 .last()
1186 .unwrap()
1187 .head()
1188 .to_display_point(&display_map)
1189 .row() as f32
1190 + 1.0;
1191 }
1192
1193 let margin = if matches!(self.mode, EditorMode::AutoHeight { .. }) {
1194 0.
1195 } else {
1196 ((visible_lines - (last_cursor_bottom - first_cursor_top)) / 2.0).floor()
1197 };
1198 if margin < 0.0 {
1199 return false;
1200 }
1201
1202 match autoscroll {
1203 Autoscroll::Fit | Autoscroll::Newest => {
1204 let margin = margin.min(self.vertical_scroll_margin);
1205 let target_top = (first_cursor_top - margin).max(0.0);
1206 let target_bottom = last_cursor_bottom + margin;
1207 let start_row = scroll_position.y();
1208 let end_row = start_row + visible_lines;
1209
1210 if target_top < start_row {
1211 scroll_position.set_y(target_top);
1212 self.set_scroll_position_internal(scroll_position, local, cx);
1213 } else if target_bottom >= end_row {
1214 scroll_position.set_y(target_bottom - visible_lines);
1215 self.set_scroll_position_internal(scroll_position, local, cx);
1216 }
1217 }
1218 Autoscroll::Center => {
1219 scroll_position.set_y((first_cursor_top - margin).max(0.0));
1220 self.set_scroll_position_internal(scroll_position, local, cx);
1221 }
1222 }
1223
1224 true
1225 }
1226
1227 pub fn autoscroll_horizontally(
1228 &mut self,
1229 start_row: u32,
1230 viewport_width: f32,
1231 scroll_width: f32,
1232 max_glyph_width: f32,
1233 layouts: &[text_layout::Line],
1234 cx: &mut ViewContext<Self>,
1235 ) -> bool {
1236 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1237 let selections = self.local_selections::<Point>(cx);
1238
1239 let mut target_left;
1240 let mut target_right;
1241
1242 if self.highlighted_rows.is_some() {
1243 target_left = 0.0_f32;
1244 target_right = 0.0_f32;
1245 } else {
1246 target_left = std::f32::INFINITY;
1247 target_right = 0.0_f32;
1248 for selection in selections {
1249 let head = selection.head().to_display_point(&display_map);
1250 if head.row() >= start_row && head.row() < start_row + layouts.len() as u32 {
1251 let start_column = head.column().saturating_sub(3);
1252 let end_column = cmp::min(display_map.line_len(head.row()), head.column() + 3);
1253 target_left = target_left.min(
1254 layouts[(head.row() - start_row) as usize]
1255 .x_for_index(start_column as usize),
1256 );
1257 target_right = target_right.max(
1258 layouts[(head.row() - start_row) as usize].x_for_index(end_column as usize)
1259 + max_glyph_width,
1260 );
1261 }
1262 }
1263 }
1264
1265 target_right = target_right.min(scroll_width);
1266
1267 if target_right - target_left > viewport_width {
1268 return false;
1269 }
1270
1271 let scroll_left = self.scroll_position.x() * max_glyph_width;
1272 let scroll_right = scroll_left + viewport_width;
1273
1274 if target_left < scroll_left {
1275 self.scroll_position.set_x(target_left / max_glyph_width);
1276 true
1277 } else if target_right > scroll_right {
1278 self.scroll_position
1279 .set_x((target_right - viewport_width) / max_glyph_width);
1280 true
1281 } else {
1282 false
1283 }
1284 }
1285
1286 pub fn move_selections(
1287 &mut self,
1288 cx: &mut ViewContext<Self>,
1289 move_selection: impl Fn(&DisplaySnapshot, &mut Selection<DisplayPoint>),
1290 ) {
1291 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1292 let selections = self
1293 .local_selections::<Point>(cx)
1294 .into_iter()
1295 .map(|selection| {
1296 let mut selection = Selection {
1297 id: selection.id,
1298 start: selection.start.to_display_point(&display_map),
1299 end: selection.end.to_display_point(&display_map),
1300 reversed: selection.reversed,
1301 goal: selection.goal,
1302 };
1303 move_selection(&display_map, &mut selection);
1304 Selection {
1305 id: selection.id,
1306 start: selection.start.to_point(&display_map),
1307 end: selection.end.to_point(&display_map),
1308 reversed: selection.reversed,
1309 goal: selection.goal,
1310 }
1311 })
1312 .collect();
1313 self.update_selections(selections, Some(Autoscroll::Fit), cx);
1314 }
1315
1316 pub fn move_selection_heads(
1317 &mut self,
1318 cx: &mut ViewContext<Self>,
1319 update_head: impl Fn(
1320 &DisplaySnapshot,
1321 DisplayPoint,
1322 SelectionGoal,
1323 ) -> (DisplayPoint, SelectionGoal),
1324 ) {
1325 self.move_selections(cx, |map, selection| {
1326 let (new_head, new_goal) = update_head(map, selection.head(), selection.goal);
1327 selection.set_head(new_head, new_goal);
1328 });
1329 }
1330
1331 pub fn move_cursors(
1332 &mut self,
1333 cx: &mut ViewContext<Self>,
1334 update_cursor_position: impl Fn(
1335 &DisplaySnapshot,
1336 DisplayPoint,
1337 SelectionGoal,
1338 ) -> (DisplayPoint, SelectionGoal),
1339 ) {
1340 self.move_selections(cx, |map, selection| {
1341 let (cursor, new_goal) = update_cursor_position(map, selection.head(), selection.goal);
1342 selection.collapse_to(cursor, new_goal)
1343 });
1344 }
1345
1346 fn select(&mut self, Select(phase): &Select, cx: &mut ViewContext<Self>) {
1347 self.hide_context_menu(cx);
1348
1349 match phase {
1350 SelectPhase::Begin {
1351 position,
1352 add,
1353 click_count,
1354 } => self.begin_selection(*position, *add, *click_count, cx),
1355 SelectPhase::BeginColumnar {
1356 position,
1357 overshoot,
1358 } => self.begin_columnar_selection(*position, *overshoot, cx),
1359 SelectPhase::Extend {
1360 position,
1361 click_count,
1362 } => self.extend_selection(*position, *click_count, cx),
1363 SelectPhase::Update {
1364 position,
1365 overshoot,
1366 scroll_position,
1367 } => self.update_selection(*position, *overshoot, *scroll_position, cx),
1368 SelectPhase::End => self.end_selection(cx),
1369 }
1370 }
1371
1372 fn extend_selection(
1373 &mut self,
1374 position: DisplayPoint,
1375 click_count: usize,
1376 cx: &mut ViewContext<Self>,
1377 ) {
1378 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1379 let tail = self
1380 .newest_selection_with_snapshot::<usize>(&display_map.buffer_snapshot)
1381 .tail();
1382 self.begin_selection(position, false, click_count, cx);
1383
1384 let position = position.to_offset(&display_map, Bias::Left);
1385 let tail_anchor = display_map.buffer_snapshot.anchor_before(tail);
1386 let mut pending = self.pending_selection.clone().unwrap();
1387
1388 if position >= tail {
1389 pending.selection.start = tail_anchor.clone();
1390 } else {
1391 pending.selection.end = tail_anchor.clone();
1392 pending.selection.reversed = true;
1393 }
1394
1395 match &mut pending.mode {
1396 SelectMode::Word(range) | SelectMode::Line(range) => {
1397 *range = tail_anchor.clone()..tail_anchor
1398 }
1399 _ => {}
1400 }
1401
1402 self.set_selections(self.selections.clone(), Some(pending), true, cx);
1403 }
1404
1405 fn begin_selection(
1406 &mut self,
1407 position: DisplayPoint,
1408 add: bool,
1409 click_count: usize,
1410 cx: &mut ViewContext<Self>,
1411 ) {
1412 if !self.focused {
1413 cx.focus_self();
1414 cx.emit(Event::Activate);
1415 }
1416
1417 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1418 let buffer = &display_map.buffer_snapshot;
1419 let newest_selection = self.newest_anchor_selection().clone();
1420
1421 let start;
1422 let end;
1423 let mode;
1424 match click_count {
1425 1 => {
1426 start = buffer.anchor_before(position.to_point(&display_map));
1427 end = start.clone();
1428 mode = SelectMode::Character;
1429 }
1430 2 => {
1431 let range = movement::surrounding_word(&display_map, position);
1432 start = buffer.anchor_before(range.start.to_point(&display_map));
1433 end = buffer.anchor_before(range.end.to_point(&display_map));
1434 mode = SelectMode::Word(start.clone()..end.clone());
1435 }
1436 3 => {
1437 let position = display_map
1438 .clip_point(position, Bias::Left)
1439 .to_point(&display_map);
1440 let line_start = display_map.prev_line_boundary(position).0;
1441 let next_line_start = buffer.clip_point(
1442 display_map.next_line_boundary(position).0 + Point::new(1, 0),
1443 Bias::Left,
1444 );
1445 start = buffer.anchor_before(line_start);
1446 end = buffer.anchor_before(next_line_start);
1447 mode = SelectMode::Line(start.clone()..end.clone());
1448 }
1449 _ => {
1450 start = buffer.anchor_before(0);
1451 end = buffer.anchor_before(buffer.len());
1452 mode = SelectMode::All;
1453 }
1454 }
1455
1456 let selection = Selection {
1457 id: post_inc(&mut self.next_selection_id),
1458 start,
1459 end,
1460 reversed: false,
1461 goal: SelectionGoal::None,
1462 };
1463
1464 let mut selections;
1465 if add {
1466 selections = self.selections.clone();
1467 // Remove the newest selection if it was added due to a previous mouse up
1468 // within this multi-click.
1469 if click_count > 1 {
1470 selections = self
1471 .selections
1472 .iter()
1473 .filter(|selection| selection.id != newest_selection.id)
1474 .cloned()
1475 .collect();
1476 }
1477 } else {
1478 selections = Arc::from([]);
1479 }
1480 self.set_selections(
1481 selections,
1482 Some(PendingSelection { selection, mode }),
1483 true,
1484 cx,
1485 );
1486
1487 cx.notify();
1488 }
1489
1490 fn begin_columnar_selection(
1491 &mut self,
1492 position: DisplayPoint,
1493 overshoot: u32,
1494 cx: &mut ViewContext<Self>,
1495 ) {
1496 if !self.focused {
1497 cx.focus_self();
1498 cx.emit(Event::Activate);
1499 }
1500
1501 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1502 let tail = self
1503 .newest_selection_with_snapshot::<Point>(&display_map.buffer_snapshot)
1504 .tail();
1505 self.columnar_selection_tail = Some(display_map.buffer_snapshot.anchor_before(tail));
1506
1507 self.select_columns(
1508 tail.to_display_point(&display_map),
1509 position,
1510 overshoot,
1511 &display_map,
1512 cx,
1513 );
1514 }
1515
1516 fn update_selection(
1517 &mut self,
1518 position: DisplayPoint,
1519 overshoot: u32,
1520 scroll_position: Vector2F,
1521 cx: &mut ViewContext<Self>,
1522 ) {
1523 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1524
1525 if let Some(tail) = self.columnar_selection_tail.as_ref() {
1526 let tail = tail.to_display_point(&display_map);
1527 self.select_columns(tail, position, overshoot, &display_map, cx);
1528 } else if let Some(mut pending) = self.pending_selection.clone() {
1529 let buffer = self.buffer.read(cx).snapshot(cx);
1530 let head;
1531 let tail;
1532 match &pending.mode {
1533 SelectMode::Character => {
1534 head = position.to_point(&display_map);
1535 tail = pending.selection.tail().to_point(&buffer);
1536 }
1537 SelectMode::Word(original_range) => {
1538 let original_display_range = original_range.start.to_display_point(&display_map)
1539 ..original_range.end.to_display_point(&display_map);
1540 let original_buffer_range = original_display_range.start.to_point(&display_map)
1541 ..original_display_range.end.to_point(&display_map);
1542 if movement::is_inside_word(&display_map, position)
1543 || original_display_range.contains(&position)
1544 {
1545 let word_range = movement::surrounding_word(&display_map, position);
1546 if word_range.start < original_display_range.start {
1547 head = word_range.start.to_point(&display_map);
1548 } else {
1549 head = word_range.end.to_point(&display_map);
1550 }
1551 } else {
1552 head = position.to_point(&display_map);
1553 }
1554
1555 if head <= original_buffer_range.start {
1556 tail = original_buffer_range.end;
1557 } else {
1558 tail = original_buffer_range.start;
1559 }
1560 }
1561 SelectMode::Line(original_range) => {
1562 let original_range = original_range.to_point(&display_map.buffer_snapshot);
1563
1564 let position = display_map
1565 .clip_point(position, Bias::Left)
1566 .to_point(&display_map);
1567 let line_start = display_map.prev_line_boundary(position).0;
1568 let next_line_start = buffer.clip_point(
1569 display_map.next_line_boundary(position).0 + Point::new(1, 0),
1570 Bias::Left,
1571 );
1572
1573 if line_start < original_range.start {
1574 head = line_start
1575 } else {
1576 head = next_line_start
1577 }
1578
1579 if head <= original_range.start {
1580 tail = original_range.end;
1581 } else {
1582 tail = original_range.start;
1583 }
1584 }
1585 SelectMode::All => {
1586 return;
1587 }
1588 };
1589
1590 if head < tail {
1591 pending.selection.start = buffer.anchor_before(head);
1592 pending.selection.end = buffer.anchor_before(tail);
1593 pending.selection.reversed = true;
1594 } else {
1595 pending.selection.start = buffer.anchor_before(tail);
1596 pending.selection.end = buffer.anchor_before(head);
1597 pending.selection.reversed = false;
1598 }
1599 self.set_selections(self.selections.clone(), Some(pending), true, cx);
1600 } else {
1601 log::error!("update_selection dispatched with no pending selection");
1602 return;
1603 }
1604
1605 self.set_scroll_position(scroll_position, cx);
1606 cx.notify();
1607 }
1608
1609 fn end_selection(&mut self, cx: &mut ViewContext<Self>) {
1610 self.columnar_selection_tail.take();
1611 if self.pending_selection.is_some() {
1612 let selections = self.local_selections::<usize>(cx);
1613 self.update_selections(selections, None, cx);
1614 }
1615 }
1616
1617 fn select_columns(
1618 &mut self,
1619 tail: DisplayPoint,
1620 head: DisplayPoint,
1621 overshoot: u32,
1622 display_map: &DisplaySnapshot,
1623 cx: &mut ViewContext<Self>,
1624 ) {
1625 let start_row = cmp::min(tail.row(), head.row());
1626 let end_row = cmp::max(tail.row(), head.row());
1627 let start_column = cmp::min(tail.column(), head.column() + overshoot);
1628 let end_column = cmp::max(tail.column(), head.column() + overshoot);
1629 let reversed = start_column < tail.column();
1630
1631 let selections = (start_row..=end_row)
1632 .filter_map(|row| {
1633 if start_column <= display_map.line_len(row) && !display_map.is_block_line(row) {
1634 let start = display_map
1635 .clip_point(DisplayPoint::new(row, start_column), Bias::Left)
1636 .to_point(&display_map);
1637 let end = display_map
1638 .clip_point(DisplayPoint::new(row, end_column), Bias::Right)
1639 .to_point(&display_map);
1640 Some(Selection {
1641 id: post_inc(&mut self.next_selection_id),
1642 start,
1643 end,
1644 reversed,
1645 goal: SelectionGoal::None,
1646 })
1647 } else {
1648 None
1649 }
1650 })
1651 .collect::<Vec<_>>();
1652
1653 self.update_selections(selections, None, cx);
1654 cx.notify();
1655 }
1656
1657 pub fn is_selecting(&self) -> bool {
1658 self.pending_selection.is_some() || self.columnar_selection_tail.is_some()
1659 }
1660
1661 pub fn cancel(&mut self, _: &Cancel, cx: &mut ViewContext<Self>) {
1662 if self.take_rename(false, cx).is_some() {
1663 return;
1664 }
1665
1666 if self.hide_context_menu(cx).is_some() {
1667 return;
1668 }
1669
1670 if self.snippet_stack.pop().is_some() {
1671 return;
1672 }
1673
1674 if self.mode != EditorMode::Full {
1675 cx.propagate_action();
1676 return;
1677 }
1678
1679 if self.active_diagnostics.is_some() {
1680 self.dismiss_diagnostics(cx);
1681 } else if let Some(pending) = self.pending_selection.clone() {
1682 let mut selections = self.selections.clone();
1683 if selections.is_empty() {
1684 selections = Arc::from([pending.selection]);
1685 }
1686 self.set_selections(selections, None, true, cx);
1687 self.request_autoscroll(Autoscroll::Fit, cx);
1688 } else {
1689 let mut oldest_selection = self.oldest_selection::<usize>(&cx);
1690 if self.selection_count() == 1 {
1691 if oldest_selection.is_empty() {
1692 cx.propagate_action();
1693 return;
1694 }
1695
1696 oldest_selection.start = oldest_selection.head().clone();
1697 oldest_selection.end = oldest_selection.head().clone();
1698 }
1699 self.update_selections(vec![oldest_selection], Some(Autoscroll::Fit), cx);
1700 }
1701 }
1702
1703 #[cfg(any(test, feature = "test-support"))]
1704 pub fn selected_ranges<D: TextDimension + Ord + Sub<D, Output = D>>(
1705 &self,
1706 cx: &AppContext,
1707 ) -> Vec<Range<D>> {
1708 self.local_selections::<D>(cx)
1709 .iter()
1710 .map(|s| {
1711 if s.reversed {
1712 s.end.clone()..s.start.clone()
1713 } else {
1714 s.start.clone()..s.end.clone()
1715 }
1716 })
1717 .collect()
1718 }
1719
1720 #[cfg(any(test, feature = "test-support"))]
1721 pub fn selected_display_ranges(&self, cx: &mut MutableAppContext) -> Vec<Range<DisplayPoint>> {
1722 let display_map = self
1723 .display_map
1724 .update(cx, |display_map, cx| display_map.snapshot(cx));
1725 self.selections
1726 .iter()
1727 .chain(
1728 self.pending_selection
1729 .as_ref()
1730 .map(|pending| &pending.selection),
1731 )
1732 .map(|s| {
1733 if s.reversed {
1734 s.end.to_display_point(&display_map)..s.start.to_display_point(&display_map)
1735 } else {
1736 s.start.to_display_point(&display_map)..s.end.to_display_point(&display_map)
1737 }
1738 })
1739 .collect()
1740 }
1741
1742 pub fn select_ranges<I, T>(
1743 &mut self,
1744 ranges: I,
1745 autoscroll: Option<Autoscroll>,
1746 cx: &mut ViewContext<Self>,
1747 ) where
1748 I: IntoIterator<Item = Range<T>>,
1749 T: ToOffset,
1750 {
1751 let buffer = self.buffer.read(cx).snapshot(cx);
1752 let selections = ranges
1753 .into_iter()
1754 .map(|range| {
1755 let mut start = range.start.to_offset(&buffer);
1756 let mut end = range.end.to_offset(&buffer);
1757 let reversed = if start > end {
1758 mem::swap(&mut start, &mut end);
1759 true
1760 } else {
1761 false
1762 };
1763 Selection {
1764 id: post_inc(&mut self.next_selection_id),
1765 start,
1766 end,
1767 reversed,
1768 goal: SelectionGoal::None,
1769 }
1770 })
1771 .collect::<Vec<_>>();
1772 self.update_selections(selections, autoscroll, cx);
1773 }
1774
1775 #[cfg(any(test, feature = "test-support"))]
1776 pub fn select_display_ranges<'a, T>(&mut self, ranges: T, cx: &mut ViewContext<Self>)
1777 where
1778 T: IntoIterator<Item = &'a Range<DisplayPoint>>,
1779 {
1780 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1781 let selections = ranges
1782 .into_iter()
1783 .map(|range| {
1784 let mut start = range.start;
1785 let mut end = range.end;
1786 let reversed = if start > end {
1787 mem::swap(&mut start, &mut end);
1788 true
1789 } else {
1790 false
1791 };
1792 Selection {
1793 id: post_inc(&mut self.next_selection_id),
1794 start: start.to_point(&display_map),
1795 end: end.to_point(&display_map),
1796 reversed,
1797 goal: SelectionGoal::None,
1798 }
1799 })
1800 .collect();
1801 self.update_selections(selections, None, cx);
1802 }
1803
1804 pub fn handle_input(&mut self, action: &Input, cx: &mut ViewContext<Self>) {
1805 if !self.input_enabled {
1806 cx.propagate_action();
1807 return;
1808 }
1809
1810 let text = action.0.as_ref();
1811 if !self.skip_autoclose_end(text, cx) {
1812 self.transact(cx, |this, cx| {
1813 if !this.surround_with_bracket_pair(text, cx) {
1814 this.insert(text, cx);
1815 this.autoclose_bracket_pairs(cx);
1816 }
1817 });
1818 self.trigger_completion_on_input(text, cx);
1819 }
1820 }
1821
1822 pub fn newline(&mut self, _: &Newline, cx: &mut ViewContext<Self>) {
1823 self.transact(cx, |this, cx| {
1824 let mut old_selections = SmallVec::<[_; 32]>::new();
1825 {
1826 let selections = this.local_selections::<usize>(cx);
1827 let buffer = this.buffer.read(cx).snapshot(cx);
1828 for selection in selections.iter() {
1829 let start_point = selection.start.to_point(&buffer);
1830 let indent = buffer
1831 .indent_column_for_line(start_point.row)
1832 .min(start_point.column);
1833 let start = selection.start;
1834 let end = selection.end;
1835
1836 let mut insert_extra_newline = false;
1837 if let Some(language) = buffer.language() {
1838 let leading_whitespace_len = buffer
1839 .reversed_chars_at(start)
1840 .take_while(|c| c.is_whitespace() && *c != '\n')
1841 .map(|c| c.len_utf8())
1842 .sum::<usize>();
1843
1844 let trailing_whitespace_len = buffer
1845 .chars_at(end)
1846 .take_while(|c| c.is_whitespace() && *c != '\n')
1847 .map(|c| c.len_utf8())
1848 .sum::<usize>();
1849
1850 insert_extra_newline = language.brackets().iter().any(|pair| {
1851 let pair_start = pair.start.trim_end();
1852 let pair_end = pair.end.trim_start();
1853
1854 pair.newline
1855 && buffer.contains_str_at(end + trailing_whitespace_len, pair_end)
1856 && buffer.contains_str_at(
1857 (start - leading_whitespace_len)
1858 .saturating_sub(pair_start.len()),
1859 pair_start,
1860 )
1861 });
1862 }
1863
1864 old_selections.push((
1865 selection.id,
1866 buffer.anchor_after(end),
1867 start..end,
1868 indent,
1869 insert_extra_newline,
1870 ));
1871 }
1872 }
1873
1874 this.buffer.update(cx, |buffer, cx| {
1875 let mut delta = 0_isize;
1876 let mut pending_edit: Option<PendingEdit> = None;
1877 for (_, _, range, indent, insert_extra_newline) in &old_selections {
1878 if pending_edit.as_ref().map_or(false, |pending| {
1879 pending.indent != *indent
1880 || pending.insert_extra_newline != *insert_extra_newline
1881 }) {
1882 let pending = pending_edit.take().unwrap();
1883 let mut new_text = String::with_capacity(1 + pending.indent as usize);
1884 new_text.push('\n');
1885 new_text.extend(iter::repeat(' ').take(pending.indent as usize));
1886 if pending.insert_extra_newline {
1887 new_text = new_text.repeat(2);
1888 }
1889 buffer.edit_with_autoindent(pending.ranges, new_text, cx);
1890 delta += pending.delta;
1891 }
1892
1893 let start = (range.start as isize + delta) as usize;
1894 let end = (range.end as isize + delta) as usize;
1895 let mut text_len = *indent as usize + 1;
1896 if *insert_extra_newline {
1897 text_len *= 2;
1898 }
1899
1900 let pending = pending_edit.get_or_insert_with(Default::default);
1901 pending.delta += text_len as isize - (end - start) as isize;
1902 pending.indent = *indent;
1903 pending.insert_extra_newline = *insert_extra_newline;
1904 pending.ranges.push(start..end);
1905 }
1906
1907 let pending = pending_edit.unwrap();
1908 let mut new_text = String::with_capacity(1 + pending.indent as usize);
1909 new_text.push('\n');
1910 new_text.extend(iter::repeat(' ').take(pending.indent as usize));
1911 if pending.insert_extra_newline {
1912 new_text = new_text.repeat(2);
1913 }
1914 buffer.edit_with_autoindent(pending.ranges, new_text, cx);
1915
1916 let buffer = buffer.read(cx);
1917 this.selections = this
1918 .selections
1919 .iter()
1920 .cloned()
1921 .zip(old_selections)
1922 .map(
1923 |(mut new_selection, (_, end_anchor, _, _, insert_extra_newline))| {
1924 let mut cursor = end_anchor.to_point(&buffer);
1925 if insert_extra_newline {
1926 cursor.row -= 1;
1927 cursor.column = buffer.line_len(cursor.row);
1928 }
1929 let anchor = buffer.anchor_after(cursor);
1930 new_selection.start = anchor.clone();
1931 new_selection.end = anchor;
1932 new_selection
1933 },
1934 )
1935 .collect();
1936 });
1937
1938 this.request_autoscroll(Autoscroll::Fit, cx);
1939 });
1940
1941 #[derive(Default)]
1942 struct PendingEdit {
1943 indent: u32,
1944 insert_extra_newline: bool,
1945 delta: isize,
1946 ranges: SmallVec<[Range<usize>; 32]>,
1947 }
1948 }
1949
1950 pub fn insert(&mut self, text: &str, cx: &mut ViewContext<Self>) {
1951 self.transact(cx, |this, cx| {
1952 let old_selections = this.local_selections::<usize>(cx);
1953 let selection_anchors = this.buffer.update(cx, |buffer, cx| {
1954 let anchors = {
1955 let snapshot = buffer.read(cx);
1956 old_selections
1957 .iter()
1958 .map(|s| (s.id, s.goal, snapshot.anchor_after(s.end)))
1959 .collect::<Vec<_>>()
1960 };
1961 let edit_ranges = old_selections.iter().map(|s| s.start..s.end);
1962 buffer.edit_with_autoindent(edit_ranges, text, cx);
1963 anchors
1964 });
1965
1966 let selections = {
1967 let snapshot = this.buffer.read(cx).read(cx);
1968 selection_anchors
1969 .into_iter()
1970 .map(|(id, goal, position)| {
1971 let position = position.to_offset(&snapshot);
1972 Selection {
1973 id,
1974 start: position,
1975 end: position,
1976 goal,
1977 reversed: false,
1978 }
1979 })
1980 .collect()
1981 };
1982 this.update_selections(selections, Some(Autoscroll::Fit), cx);
1983 });
1984 }
1985
1986 fn trigger_completion_on_input(&mut self, text: &str, cx: &mut ViewContext<Self>) {
1987 let selection = self.newest_anchor_selection();
1988 if self
1989 .buffer
1990 .read(cx)
1991 .is_completion_trigger(selection.head(), text, cx)
1992 {
1993 self.show_completions(&ShowCompletions, cx);
1994 } else {
1995 self.hide_context_menu(cx);
1996 }
1997 }
1998
1999 fn surround_with_bracket_pair(&mut self, text: &str, cx: &mut ViewContext<Self>) -> bool {
2000 let snapshot = self.buffer.read(cx).snapshot(cx);
2001 if let Some(pair) = snapshot
2002 .language()
2003 .and_then(|language| language.brackets().iter().find(|b| b.start == text))
2004 .cloned()
2005 {
2006 if self
2007 .local_selections::<usize>(cx)
2008 .iter()
2009 .any(|selection| selection.is_empty())
2010 {
2011 false
2012 } else {
2013 let mut selections = self.selections.to_vec();
2014 for selection in &mut selections {
2015 selection.end = selection.end.bias_left(&snapshot);
2016 }
2017 drop(snapshot);
2018
2019 self.buffer.update(cx, |buffer, cx| {
2020 buffer.edit(
2021 selections.iter().map(|s| s.start.clone()..s.start.clone()),
2022 &pair.start,
2023 cx,
2024 );
2025 buffer.edit(
2026 selections.iter().map(|s| s.end.clone()..s.end.clone()),
2027 &pair.end,
2028 cx,
2029 );
2030 });
2031
2032 let snapshot = self.buffer.read(cx).read(cx);
2033 for selection in &mut selections {
2034 selection.end = selection.end.bias_right(&snapshot);
2035 }
2036 drop(snapshot);
2037
2038 self.set_selections(selections.into(), None, true, cx);
2039 true
2040 }
2041 } else {
2042 false
2043 }
2044 }
2045
2046 fn autoclose_bracket_pairs(&mut self, cx: &mut ViewContext<Self>) {
2047 let selections = self.local_selections::<usize>(cx);
2048 let mut bracket_pair_state = None;
2049 let mut new_selections = None;
2050 self.buffer.update(cx, |buffer, cx| {
2051 let mut snapshot = buffer.snapshot(cx);
2052 let left_biased_selections = selections
2053 .iter()
2054 .map(|selection| Selection {
2055 id: selection.id,
2056 start: snapshot.anchor_before(selection.start),
2057 end: snapshot.anchor_before(selection.end),
2058 reversed: selection.reversed,
2059 goal: selection.goal,
2060 })
2061 .collect::<Vec<_>>();
2062
2063 let autoclose_pair = snapshot.language().and_then(|language| {
2064 let first_selection_start = selections.first().unwrap().start;
2065 let pair = language.brackets().iter().find(|pair| {
2066 snapshot.contains_str_at(
2067 first_selection_start.saturating_sub(pair.start.len()),
2068 &pair.start,
2069 )
2070 });
2071 pair.and_then(|pair| {
2072 let should_autoclose = selections.iter().all(|selection| {
2073 // Ensure all selections are parked at the end of a pair start.
2074 if snapshot.contains_str_at(
2075 selection.start.saturating_sub(pair.start.len()),
2076 &pair.start,
2077 ) {
2078 snapshot
2079 .chars_at(selection.start)
2080 .next()
2081 .map_or(true, |c| language.should_autoclose_before(c))
2082 } else {
2083 false
2084 }
2085 });
2086
2087 if should_autoclose {
2088 Some(pair.clone())
2089 } else {
2090 None
2091 }
2092 })
2093 });
2094
2095 if let Some(pair) = autoclose_pair {
2096 let selection_ranges = selections
2097 .iter()
2098 .map(|selection| {
2099 let start = selection.start.to_offset(&snapshot);
2100 start..start
2101 })
2102 .collect::<SmallVec<[_; 32]>>();
2103
2104 buffer.edit(selection_ranges, &pair.end, cx);
2105 snapshot = buffer.snapshot(cx);
2106
2107 new_selections = Some(
2108 self.resolve_selections::<usize, _>(left_biased_selections.iter(), &snapshot)
2109 .collect::<Vec<_>>(),
2110 );
2111
2112 if pair.end.len() == 1 {
2113 let mut delta = 0;
2114 bracket_pair_state = Some(BracketPairState {
2115 ranges: selections
2116 .iter()
2117 .map(move |selection| {
2118 let offset = selection.start + delta;
2119 delta += 1;
2120 snapshot.anchor_before(offset)..snapshot.anchor_after(offset)
2121 })
2122 .collect(),
2123 pair,
2124 });
2125 }
2126 }
2127 });
2128
2129 if let Some(new_selections) = new_selections {
2130 self.update_selections(new_selections, None, cx);
2131 }
2132 if let Some(bracket_pair_state) = bracket_pair_state {
2133 self.autoclose_stack.push(bracket_pair_state);
2134 }
2135 }
2136
2137 fn skip_autoclose_end(&mut self, text: &str, cx: &mut ViewContext<Self>) -> bool {
2138 let old_selections = self.local_selections::<usize>(cx);
2139 let autoclose_pair = if let Some(autoclose_pair) = self.autoclose_stack.last() {
2140 autoclose_pair
2141 } else {
2142 return false;
2143 };
2144 if text != autoclose_pair.pair.end {
2145 return false;
2146 }
2147
2148 debug_assert_eq!(old_selections.len(), autoclose_pair.ranges.len());
2149
2150 let buffer = self.buffer.read(cx).snapshot(cx);
2151 if old_selections
2152 .iter()
2153 .zip(autoclose_pair.ranges.iter().map(|r| r.to_offset(&buffer)))
2154 .all(|(selection, autoclose_range)| {
2155 let autoclose_range_end = autoclose_range.end.to_offset(&buffer);
2156 selection.is_empty() && selection.start == autoclose_range_end
2157 })
2158 {
2159 let new_selections = old_selections
2160 .into_iter()
2161 .map(|selection| {
2162 let cursor = selection.start + 1;
2163 Selection {
2164 id: selection.id,
2165 start: cursor,
2166 end: cursor,
2167 reversed: false,
2168 goal: SelectionGoal::None,
2169 }
2170 })
2171 .collect();
2172 self.autoclose_stack.pop();
2173 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
2174 true
2175 } else {
2176 false
2177 }
2178 }
2179
2180 fn completion_query(buffer: &MultiBufferSnapshot, position: impl ToOffset) -> Option<String> {
2181 let offset = position.to_offset(buffer);
2182 let (word_range, kind) = buffer.surrounding_word(offset);
2183 if offset > word_range.start && kind == Some(CharKind::Word) {
2184 Some(
2185 buffer
2186 .text_for_range(word_range.start..offset)
2187 .collect::<String>(),
2188 )
2189 } else {
2190 None
2191 }
2192 }
2193
2194 fn show_completions(&mut self, _: &ShowCompletions, cx: &mut ViewContext<Self>) {
2195 if self.pending_rename.is_some() {
2196 return;
2197 }
2198
2199 let project = if let Some(project) = self.project.clone() {
2200 project
2201 } else {
2202 return;
2203 };
2204
2205 let position = self.newest_anchor_selection().head();
2206 let (buffer, buffer_position) = if let Some(output) = self
2207 .buffer
2208 .read(cx)
2209 .text_anchor_for_position(position.clone(), cx)
2210 {
2211 output
2212 } else {
2213 return;
2214 };
2215
2216 let query = Self::completion_query(&self.buffer.read(cx).read(cx), position.clone());
2217 let completions = project.update(cx, |project, cx| {
2218 project.completions(&buffer, buffer_position.clone(), cx)
2219 });
2220
2221 let id = post_inc(&mut self.next_completion_id);
2222 let task = cx.spawn_weak(|this, mut cx| {
2223 async move {
2224 let completions = completions.await?;
2225 if completions.is_empty() {
2226 return Ok(());
2227 }
2228
2229 let mut menu = CompletionsMenu {
2230 id,
2231 initial_position: position,
2232 match_candidates: completions
2233 .iter()
2234 .enumerate()
2235 .map(|(id, completion)| {
2236 StringMatchCandidate::new(
2237 id,
2238 completion.label.text[completion.label.filter_range.clone()].into(),
2239 )
2240 })
2241 .collect(),
2242 buffer,
2243 completions: completions.into(),
2244 matches: Vec::new().into(),
2245 selected_item: 0,
2246 list: Default::default(),
2247 };
2248
2249 menu.filter(query.as_deref(), cx.background()).await;
2250
2251 if let Some(this) = this.upgrade(&cx) {
2252 this.update(&mut cx, |this, cx| {
2253 match this.context_menu.as_ref() {
2254 None => {}
2255 Some(ContextMenu::Completions(prev_menu)) => {
2256 if prev_menu.id > menu.id {
2257 return;
2258 }
2259 }
2260 _ => return,
2261 }
2262
2263 this.completion_tasks.retain(|(id, _)| *id > menu.id);
2264 if this.focused {
2265 this.show_context_menu(ContextMenu::Completions(menu), cx);
2266 }
2267
2268 cx.notify();
2269 });
2270 }
2271 Ok::<_, anyhow::Error>(())
2272 }
2273 .log_err()
2274 });
2275 self.completion_tasks.push((id, task));
2276 }
2277
2278 pub fn confirm_completion(
2279 &mut self,
2280 ConfirmCompletion(completion_ix): &ConfirmCompletion,
2281 cx: &mut ViewContext<Self>,
2282 ) -> Option<Task<Result<()>>> {
2283 use language::ToOffset as _;
2284
2285 let completions_menu = if let ContextMenu::Completions(menu) = self.hide_context_menu(cx)? {
2286 menu
2287 } else {
2288 return None;
2289 };
2290
2291 let mat = completions_menu
2292 .matches
2293 .get(completion_ix.unwrap_or(completions_menu.selected_item))?;
2294 let buffer_handle = completions_menu.buffer;
2295 let completion = completions_menu.completions.get(mat.candidate_id)?;
2296
2297 let snippet;
2298 let text;
2299 if completion.is_snippet() {
2300 snippet = Some(Snippet::parse(&completion.new_text).log_err()?);
2301 text = snippet.as_ref().unwrap().text.clone();
2302 } else {
2303 snippet = None;
2304 text = completion.new_text.clone();
2305 };
2306 let buffer = buffer_handle.read(cx);
2307 let old_range = completion.old_range.to_offset(&buffer);
2308 let old_text = buffer.text_for_range(old_range.clone()).collect::<String>();
2309
2310 let selections = self.local_selections::<usize>(cx);
2311 let newest_selection = self.newest_anchor_selection();
2312 if newest_selection.start.buffer_id != Some(buffer_handle.id()) {
2313 return None;
2314 }
2315
2316 let lookbehind = newest_selection
2317 .start
2318 .text_anchor
2319 .to_offset(buffer)
2320 .saturating_sub(old_range.start);
2321 let lookahead = old_range
2322 .end
2323 .saturating_sub(newest_selection.end.text_anchor.to_offset(buffer));
2324 let mut common_prefix_len = old_text
2325 .bytes()
2326 .zip(text.bytes())
2327 .take_while(|(a, b)| a == b)
2328 .count();
2329
2330 let snapshot = self.buffer.read(cx).snapshot(cx);
2331 let mut ranges = Vec::new();
2332 for selection in &selections {
2333 if snapshot.contains_str_at(selection.start.saturating_sub(lookbehind), &old_text) {
2334 let start = selection.start.saturating_sub(lookbehind);
2335 let end = selection.end + lookahead;
2336 ranges.push(start + common_prefix_len..end);
2337 } else {
2338 common_prefix_len = 0;
2339 ranges.clear();
2340 ranges.extend(selections.iter().map(|s| {
2341 if s.id == newest_selection.id {
2342 old_range.clone()
2343 } else {
2344 s.start..s.end
2345 }
2346 }));
2347 break;
2348 }
2349 }
2350 let text = &text[common_prefix_len..];
2351
2352 self.transact(cx, |this, cx| {
2353 if let Some(mut snippet) = snippet {
2354 snippet.text = text.to_string();
2355 for tabstop in snippet.tabstops.iter_mut().flatten() {
2356 tabstop.start -= common_prefix_len as isize;
2357 tabstop.end -= common_prefix_len as isize;
2358 }
2359
2360 this.insert_snippet(&ranges, snippet, cx).log_err();
2361 } else {
2362 this.buffer.update(cx, |buffer, cx| {
2363 buffer.edit_with_autoindent(ranges, text, cx);
2364 });
2365 }
2366 });
2367
2368 let project = self.project.clone()?;
2369 let apply_edits = project.update(cx, |project, cx| {
2370 project.apply_additional_edits_for_completion(
2371 buffer_handle,
2372 completion.clone(),
2373 true,
2374 cx,
2375 )
2376 });
2377 Some(cx.foreground().spawn(async move {
2378 apply_edits.await?;
2379 Ok(())
2380 }))
2381 }
2382
2383 pub fn toggle_code_actions(
2384 &mut self,
2385 &ToggleCodeActions(deployed_from_indicator): &ToggleCodeActions,
2386 cx: &mut ViewContext<Self>,
2387 ) {
2388 if matches!(
2389 self.context_menu.as_ref(),
2390 Some(ContextMenu::CodeActions(_))
2391 ) {
2392 self.context_menu.take();
2393 cx.notify();
2394 return;
2395 }
2396
2397 let mut task = self.code_actions_task.take();
2398 cx.spawn_weak(|this, mut cx| async move {
2399 while let Some(prev_task) = task {
2400 prev_task.await;
2401 task = this
2402 .upgrade(&cx)
2403 .and_then(|this| this.update(&mut cx, |this, _| this.code_actions_task.take()));
2404 }
2405
2406 if let Some(this) = this.upgrade(&cx) {
2407 this.update(&mut cx, |this, cx| {
2408 if this.focused {
2409 if let Some((buffer, actions)) = this.available_code_actions.clone() {
2410 this.show_context_menu(
2411 ContextMenu::CodeActions(CodeActionsMenu {
2412 buffer,
2413 actions,
2414 selected_item: Default::default(),
2415 list: Default::default(),
2416 deployed_from_indicator,
2417 }),
2418 cx,
2419 );
2420 }
2421 }
2422 })
2423 }
2424 Ok::<_, anyhow::Error>(())
2425 })
2426 .detach_and_log_err(cx);
2427 }
2428
2429 pub fn confirm_code_action(
2430 workspace: &mut Workspace,
2431 ConfirmCodeAction(action_ix): &ConfirmCodeAction,
2432 cx: &mut ViewContext<Workspace>,
2433 ) -> Option<Task<Result<()>>> {
2434 let editor = workspace.active_item(cx)?.act_as::<Editor>(cx)?;
2435 let actions_menu = if let ContextMenu::CodeActions(menu) =
2436 editor.update(cx, |editor, cx| editor.hide_context_menu(cx))?
2437 {
2438 menu
2439 } else {
2440 return None;
2441 };
2442 let action_ix = action_ix.unwrap_or(actions_menu.selected_item);
2443 let action = actions_menu.actions.get(action_ix)?.clone();
2444 let title = action.lsp_action.title.clone();
2445 let buffer = actions_menu.buffer;
2446
2447 let apply_code_actions = workspace.project().clone().update(cx, |project, cx| {
2448 project.apply_code_action(buffer, action, true, cx)
2449 });
2450 Some(cx.spawn(|workspace, cx| async move {
2451 let project_transaction = apply_code_actions.await?;
2452 Self::open_project_transaction(editor, workspace, project_transaction, title, cx).await
2453 }))
2454 }
2455
2456 async fn open_project_transaction(
2457 this: ViewHandle<Editor>,
2458 workspace: ViewHandle<Workspace>,
2459 transaction: ProjectTransaction,
2460 title: String,
2461 mut cx: AsyncAppContext,
2462 ) -> Result<()> {
2463 let replica_id = this.read_with(&cx, |this, cx| this.replica_id(cx));
2464
2465 // If the project transaction's edits are all contained within this editor, then
2466 // avoid opening a new editor to display them.
2467 let mut entries = transaction.0.iter();
2468 if let Some((buffer, transaction)) = entries.next() {
2469 if entries.next().is_none() {
2470 let excerpt = this.read_with(&cx, |editor, cx| {
2471 editor
2472 .buffer()
2473 .read(cx)
2474 .excerpt_containing(editor.newest_anchor_selection().head(), cx)
2475 });
2476 if let Some((excerpted_buffer, excerpt_range)) = excerpt {
2477 if excerpted_buffer == *buffer {
2478 let snapshot = buffer.read_with(&cx, |buffer, _| buffer.snapshot());
2479 let excerpt_range = excerpt_range.to_offset(&snapshot);
2480 if snapshot
2481 .edited_ranges_for_transaction(transaction)
2482 .all(|range| {
2483 excerpt_range.start <= range.start && excerpt_range.end >= range.end
2484 })
2485 {
2486 return Ok(());
2487 }
2488 }
2489 }
2490 }
2491 }
2492
2493 let mut ranges_to_highlight = Vec::new();
2494 let excerpt_buffer = cx.add_model(|cx| {
2495 let mut multibuffer = MultiBuffer::new(replica_id).with_title(title);
2496 for (buffer, transaction) in &transaction.0 {
2497 let snapshot = buffer.read(cx).snapshot();
2498 ranges_to_highlight.extend(
2499 multibuffer.push_excerpts_with_context_lines(
2500 buffer.clone(),
2501 snapshot
2502 .edited_ranges_for_transaction::<usize>(transaction)
2503 .collect(),
2504 1,
2505 cx,
2506 ),
2507 );
2508 }
2509 multibuffer.push_transaction(&transaction.0);
2510 multibuffer
2511 });
2512
2513 workspace.update(&mut cx, |workspace, cx| {
2514 let project = workspace.project().clone();
2515 let editor =
2516 cx.add_view(|cx| Editor::for_multibuffer(excerpt_buffer, Some(project), cx));
2517 workspace.add_item(Box::new(editor.clone()), cx);
2518 editor.update(cx, |editor, cx| {
2519 let color = editor.style(cx).highlighted_line_background;
2520 editor.highlight_background::<Self>(ranges_to_highlight, color, cx);
2521 });
2522 });
2523
2524 Ok(())
2525 }
2526
2527 fn refresh_code_actions(&mut self, cx: &mut ViewContext<Self>) -> Option<()> {
2528 let project = self.project.as_ref()?;
2529 let buffer = self.buffer.read(cx);
2530 let newest_selection = self.newest_anchor_selection().clone();
2531 let (start_buffer, start) = buffer.text_anchor_for_position(newest_selection.start, cx)?;
2532 let (end_buffer, end) = buffer.text_anchor_for_position(newest_selection.end, cx)?;
2533 if start_buffer != end_buffer {
2534 return None;
2535 }
2536
2537 let actions = project.update(cx, |project, cx| {
2538 project.code_actions(&start_buffer, start..end, cx)
2539 });
2540 self.code_actions_task = Some(cx.spawn_weak(|this, mut cx| async move {
2541 let actions = actions.await;
2542 if let Some(this) = this.upgrade(&cx) {
2543 this.update(&mut cx, |this, cx| {
2544 this.available_code_actions = actions.log_err().and_then(|actions| {
2545 if actions.is_empty() {
2546 None
2547 } else {
2548 Some((start_buffer, actions.into()))
2549 }
2550 });
2551 cx.notify();
2552 })
2553 }
2554 }));
2555 None
2556 }
2557
2558 fn refresh_document_highlights(&mut self, cx: &mut ViewContext<Self>) -> Option<()> {
2559 if self.pending_rename.is_some() {
2560 return None;
2561 }
2562
2563 let project = self.project.as_ref()?;
2564 let buffer = self.buffer.read(cx);
2565 let newest_selection = self.newest_anchor_selection().clone();
2566 let cursor_position = newest_selection.head();
2567 let (cursor_buffer, cursor_buffer_position) =
2568 buffer.text_anchor_for_position(cursor_position.clone(), cx)?;
2569 let (tail_buffer, _) = buffer.text_anchor_for_position(newest_selection.tail(), cx)?;
2570 if cursor_buffer != tail_buffer {
2571 return None;
2572 }
2573
2574 let highlights = project.update(cx, |project, cx| {
2575 project.document_highlights(&cursor_buffer, cursor_buffer_position, cx)
2576 });
2577
2578 self.document_highlights_task = Some(cx.spawn_weak(|this, mut cx| async move {
2579 let highlights = highlights.log_err().await;
2580 if let Some((this, highlights)) = this.upgrade(&cx).zip(highlights) {
2581 this.update(&mut cx, |this, cx| {
2582 if this.pending_rename.is_some() {
2583 return;
2584 }
2585
2586 let buffer_id = cursor_position.buffer_id;
2587 let style = this.style(cx);
2588 let read_background = style.document_highlight_read_background;
2589 let write_background = style.document_highlight_write_background;
2590 let buffer = this.buffer.read(cx);
2591 if !buffer
2592 .text_anchor_for_position(cursor_position, cx)
2593 .map_or(false, |(buffer, _)| buffer == cursor_buffer)
2594 {
2595 return;
2596 }
2597
2598 let cursor_buffer_snapshot = cursor_buffer.read(cx);
2599 let mut write_ranges = Vec::new();
2600 let mut read_ranges = Vec::new();
2601 for highlight in highlights {
2602 for (excerpt_id, excerpt_range) in
2603 buffer.excerpts_for_buffer(&cursor_buffer, cx)
2604 {
2605 let start = highlight
2606 .range
2607 .start
2608 .max(&excerpt_range.start, cursor_buffer_snapshot);
2609 let end = highlight
2610 .range
2611 .end
2612 .min(&excerpt_range.end, cursor_buffer_snapshot);
2613 if start.cmp(&end, cursor_buffer_snapshot).is_ge() {
2614 continue;
2615 }
2616
2617 let range = Anchor {
2618 buffer_id,
2619 excerpt_id: excerpt_id.clone(),
2620 text_anchor: start,
2621 }..Anchor {
2622 buffer_id,
2623 excerpt_id,
2624 text_anchor: end,
2625 };
2626 if highlight.kind == lsp::DocumentHighlightKind::WRITE {
2627 write_ranges.push(range);
2628 } else {
2629 read_ranges.push(range);
2630 }
2631 }
2632 }
2633
2634 this.highlight_background::<DocumentHighlightRead>(
2635 read_ranges,
2636 read_background,
2637 cx,
2638 );
2639 this.highlight_background::<DocumentHighlightWrite>(
2640 write_ranges,
2641 write_background,
2642 cx,
2643 );
2644 cx.notify();
2645 });
2646 }
2647 }));
2648 None
2649 }
2650
2651 pub fn render_code_actions_indicator(
2652 &self,
2653 style: &EditorStyle,
2654 cx: &mut ViewContext<Self>,
2655 ) -> Option<ElementBox> {
2656 if self.available_code_actions.is_some() {
2657 enum Tag {}
2658 Some(
2659 MouseEventHandler::new::<Tag, _, _>(0, cx, |_, _| {
2660 Svg::new("icons/zap.svg")
2661 .with_color(style.code_actions_indicator)
2662 .boxed()
2663 })
2664 .with_cursor_style(CursorStyle::PointingHand)
2665 .with_padding(Padding::uniform(3.))
2666 .on_mouse_down(|cx| {
2667 cx.dispatch_action(ToggleCodeActions(true));
2668 })
2669 .boxed(),
2670 )
2671 } else {
2672 None
2673 }
2674 }
2675
2676 pub fn context_menu_visible(&self) -> bool {
2677 self.context_menu
2678 .as_ref()
2679 .map_or(false, |menu| menu.visible())
2680 }
2681
2682 pub fn render_context_menu(
2683 &self,
2684 cursor_position: DisplayPoint,
2685 style: EditorStyle,
2686 cx: &AppContext,
2687 ) -> Option<(DisplayPoint, ElementBox)> {
2688 self.context_menu
2689 .as_ref()
2690 .map(|menu| menu.render(cursor_position, style, cx))
2691 }
2692
2693 fn show_context_menu(&mut self, menu: ContextMenu, cx: &mut ViewContext<Self>) {
2694 if !matches!(menu, ContextMenu::Completions(_)) {
2695 self.completion_tasks.clear();
2696 }
2697 self.context_menu = Some(menu);
2698 cx.notify();
2699 }
2700
2701 fn hide_context_menu(&mut self, cx: &mut ViewContext<Self>) -> Option<ContextMenu> {
2702 cx.notify();
2703 self.completion_tasks.clear();
2704 self.context_menu.take()
2705 }
2706
2707 pub fn insert_snippet(
2708 &mut self,
2709 insertion_ranges: &[Range<usize>],
2710 snippet: Snippet,
2711 cx: &mut ViewContext<Self>,
2712 ) -> Result<()> {
2713 let tabstops = self.buffer.update(cx, |buffer, cx| {
2714 buffer.edit_with_autoindent(insertion_ranges.iter().cloned(), &snippet.text, cx);
2715
2716 let snapshot = &*buffer.read(cx);
2717 let snippet = &snippet;
2718 snippet
2719 .tabstops
2720 .iter()
2721 .map(|tabstop| {
2722 let mut tabstop_ranges = tabstop
2723 .iter()
2724 .flat_map(|tabstop_range| {
2725 let mut delta = 0 as isize;
2726 insertion_ranges.iter().map(move |insertion_range| {
2727 let insertion_start = insertion_range.start as isize + delta;
2728 delta +=
2729 snippet.text.len() as isize - insertion_range.len() as isize;
2730
2731 let start = snapshot.anchor_before(
2732 (insertion_start + tabstop_range.start) as usize,
2733 );
2734 let end = snapshot
2735 .anchor_after((insertion_start + tabstop_range.end) as usize);
2736 start..end
2737 })
2738 })
2739 .collect::<Vec<_>>();
2740 tabstop_ranges.sort_unstable_by(|a, b| a.start.cmp(&b.start, snapshot));
2741 tabstop_ranges
2742 })
2743 .collect::<Vec<_>>()
2744 });
2745
2746 if let Some(tabstop) = tabstops.first() {
2747 self.select_ranges(tabstop.iter().cloned(), Some(Autoscroll::Fit), cx);
2748 self.snippet_stack.push(SnippetState {
2749 active_index: 0,
2750 ranges: tabstops,
2751 });
2752 }
2753
2754 Ok(())
2755 }
2756
2757 pub fn move_to_next_snippet_tabstop(&mut self, cx: &mut ViewContext<Self>) -> bool {
2758 self.move_to_snippet_tabstop(Bias::Right, cx)
2759 }
2760
2761 pub fn move_to_prev_snippet_tabstop(&mut self, cx: &mut ViewContext<Self>) {
2762 self.move_to_snippet_tabstop(Bias::Left, cx);
2763 }
2764
2765 pub fn move_to_snippet_tabstop(&mut self, bias: Bias, cx: &mut ViewContext<Self>) -> bool {
2766 let buffer = self.buffer.read(cx).snapshot(cx);
2767
2768 if let Some(snippet) = self.snippet_stack.last_mut() {
2769 match bias {
2770 Bias::Left => {
2771 if snippet.active_index > 0 {
2772 snippet.active_index -= 1;
2773 } else {
2774 return false;
2775 }
2776 }
2777 Bias::Right => {
2778 if snippet.active_index + 1 < snippet.ranges.len() {
2779 snippet.active_index += 1;
2780 } else {
2781 return false;
2782 }
2783 }
2784 }
2785 if let Some(current_ranges) = snippet.ranges.get(snippet.active_index) {
2786 let new_selections = current_ranges
2787 .iter()
2788 .map(|new_range| {
2789 let new_range = new_range.to_offset(&buffer);
2790 Selection {
2791 id: post_inc(&mut self.next_selection_id),
2792 start: new_range.start,
2793 end: new_range.end,
2794 reversed: false,
2795 goal: SelectionGoal::None,
2796 }
2797 })
2798 .collect();
2799
2800 // Remove the snippet state when moving to the last tabstop.
2801 if snippet.active_index + 1 == snippet.ranges.len() {
2802 self.snippet_stack.pop();
2803 }
2804
2805 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
2806 return true;
2807 }
2808 self.snippet_stack.pop();
2809 }
2810
2811 false
2812 }
2813
2814 pub fn clear(&mut self, cx: &mut ViewContext<Self>) {
2815 self.transact(cx, |this, cx| {
2816 this.select_all(&SelectAll, cx);
2817 this.insert("", cx);
2818 });
2819 }
2820
2821 pub fn backspace(&mut self, _: &Backspace, cx: &mut ViewContext<Self>) {
2822 let mut selections = self.local_selections::<Point>(cx);
2823 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2824 for selection in &mut selections {
2825 if selection.is_empty() {
2826 let old_head = selection.head();
2827 let mut new_head =
2828 movement::left(&display_map, old_head.to_display_point(&display_map))
2829 .to_point(&display_map);
2830 if let Some((buffer, line_buffer_range)) = display_map
2831 .buffer_snapshot
2832 .buffer_line_for_row(old_head.row)
2833 {
2834 let indent_column = buffer.indent_column_for_line(line_buffer_range.start.row);
2835 if old_head.column <= indent_column && old_head.column > 0 {
2836 let indent = buffer.indent_size();
2837 new_head = cmp::min(
2838 new_head,
2839 Point::new(old_head.row, ((old_head.column - 1) / indent) * indent),
2840 );
2841 }
2842 }
2843
2844 selection.set_head(new_head, SelectionGoal::None);
2845 }
2846 }
2847
2848 self.transact(cx, |this, cx| {
2849 this.update_selections(selections, Some(Autoscroll::Fit), cx);
2850 this.insert("", cx);
2851 });
2852 }
2853
2854 pub fn delete(&mut self, _: &Delete, cx: &mut ViewContext<Self>) {
2855 self.transact(cx, |this, cx| {
2856 this.move_selections(cx, |map, selection| {
2857 if selection.is_empty() {
2858 let cursor = movement::right(map, selection.head());
2859 selection.set_head(cursor, SelectionGoal::None);
2860 }
2861 });
2862 this.insert(&"", cx);
2863 });
2864 }
2865
2866 pub fn handle_tab(&mut self, &Tab(direction): &Tab, cx: &mut ViewContext<Self>) {
2867 match direction {
2868 Direction::Prev => {
2869 if !self.snippet_stack.is_empty() {
2870 self.move_to_prev_snippet_tabstop(cx);
2871 return;
2872 }
2873
2874 self.outdent(&Outdent, cx);
2875 }
2876 Direction::Next => {
2877 if self.move_to_next_snippet_tabstop(cx) {
2878 return;
2879 }
2880
2881 self.tab(false, cx);
2882 }
2883 }
2884 }
2885
2886 pub fn tab(&mut self, force_indentation: bool, cx: &mut ViewContext<Self>) {
2887 let tab_size = cx.global::<Settings>().tab_size;
2888 let mut selections = self.local_selections::<Point>(cx);
2889 self.transact(cx, |this, cx| {
2890 let mut last_indent = None;
2891 this.buffer.update(cx, |buffer, cx| {
2892 for selection in &mut selections {
2893 if selection.is_empty() && !force_indentation {
2894 let char_column = buffer
2895 .read(cx)
2896 .text_for_range(Point::new(selection.start.row, 0)..selection.start)
2897 .flat_map(str::chars)
2898 .count();
2899 let chars_to_next_tab_stop = tab_size - (char_column % tab_size);
2900 buffer.edit(
2901 [selection.start..selection.start],
2902 " ".repeat(chars_to_next_tab_stop),
2903 cx,
2904 );
2905 selection.start.column += chars_to_next_tab_stop as u32;
2906 selection.end = selection.start;
2907 } else {
2908 let mut start_row = selection.start.row;
2909 let mut end_row = selection.end.row + 1;
2910
2911 // If a selection ends at the beginning of a line, don't indent
2912 // that last line.
2913 if selection.end.column == 0 {
2914 end_row -= 1;
2915 }
2916
2917 // Avoid re-indenting a row that has already been indented by a
2918 // previous selection, but still update this selection's column
2919 // to reflect that indentation.
2920 if let Some((last_indent_row, last_indent_len)) = last_indent {
2921 if last_indent_row == selection.start.row {
2922 selection.start.column += last_indent_len;
2923 start_row += 1;
2924 }
2925 if last_indent_row == selection.end.row {
2926 selection.end.column += last_indent_len;
2927 }
2928 }
2929
2930 for row in start_row..end_row {
2931 let indent_column =
2932 buffer.read(cx).indent_column_for_line(row) as usize;
2933 let columns_to_next_tab_stop = tab_size - (indent_column % tab_size);
2934 let row_start = Point::new(row, 0);
2935 buffer.edit(
2936 [row_start..row_start],
2937 " ".repeat(columns_to_next_tab_stop),
2938 cx,
2939 );
2940
2941 // Update this selection's endpoints to reflect the indentation.
2942 if row == selection.start.row {
2943 selection.start.column += columns_to_next_tab_stop as u32;
2944 }
2945 if row == selection.end.row {
2946 selection.end.column += columns_to_next_tab_stop as u32;
2947 }
2948
2949 last_indent = Some((row, columns_to_next_tab_stop as u32));
2950 }
2951 }
2952 }
2953 });
2954
2955 this.update_selections(selections, Some(Autoscroll::Fit), cx);
2956 });
2957 }
2958
2959 pub fn indent(&mut self, _: &Indent, cx: &mut ViewContext<Self>) {
2960 self.tab(true, cx);
2961 }
2962
2963 pub fn outdent(&mut self, _: &Outdent, cx: &mut ViewContext<Self>) {
2964 let tab_size = cx.global::<Settings>().tab_size;
2965 let selections = self.local_selections::<Point>(cx);
2966 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2967 let mut deletion_ranges = Vec::new();
2968 let mut last_outdent = None;
2969 {
2970 let buffer = self.buffer.read(cx).read(cx);
2971 for selection in &selections {
2972 let mut rows = selection.spanned_rows(false, &display_map);
2973
2974 // Avoid re-outdenting a row that has already been outdented by a
2975 // previous selection.
2976 if let Some(last_row) = last_outdent {
2977 if last_row == rows.start {
2978 rows.start += 1;
2979 }
2980 }
2981
2982 for row in rows {
2983 let column = buffer.indent_column_for_line(row) as usize;
2984 if column > 0 {
2985 let mut deletion_len = (column % tab_size) as u32;
2986 if deletion_len == 0 {
2987 deletion_len = tab_size as u32;
2988 }
2989 deletion_ranges.push(Point::new(row, 0)..Point::new(row, deletion_len));
2990 last_outdent = Some(row);
2991 }
2992 }
2993 }
2994 }
2995
2996 self.transact(cx, |this, cx| {
2997 this.buffer.update(cx, |buffer, cx| {
2998 buffer.edit(deletion_ranges, "", cx);
2999 });
3000 this.update_selections(
3001 this.local_selections::<usize>(cx),
3002 Some(Autoscroll::Fit),
3003 cx,
3004 );
3005 });
3006 }
3007
3008 pub fn delete_line(&mut self, _: &DeleteLine, cx: &mut ViewContext<Self>) {
3009 let selections = self.local_selections::<Point>(cx);
3010 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3011 let buffer = self.buffer.read(cx).snapshot(cx);
3012
3013 let mut new_cursors = Vec::new();
3014 let mut edit_ranges = Vec::new();
3015 let mut selections = selections.iter().peekable();
3016 while let Some(selection) = selections.next() {
3017 let mut rows = selection.spanned_rows(false, &display_map);
3018 let goal_display_column = selection.head().to_display_point(&display_map).column();
3019
3020 // Accumulate contiguous regions of rows that we want to delete.
3021 while let Some(next_selection) = selections.peek() {
3022 let next_rows = next_selection.spanned_rows(false, &display_map);
3023 if next_rows.start <= rows.end {
3024 rows.end = next_rows.end;
3025 selections.next().unwrap();
3026 } else {
3027 break;
3028 }
3029 }
3030
3031 let mut edit_start = Point::new(rows.start, 0).to_offset(&buffer);
3032 let edit_end;
3033 let cursor_buffer_row;
3034 if buffer.max_point().row >= rows.end {
3035 // If there's a line after the range, delete the \n from the end of the row range
3036 // and position the cursor on the next line.
3037 edit_end = Point::new(rows.end, 0).to_offset(&buffer);
3038 cursor_buffer_row = rows.end;
3039 } else {
3040 // If there isn't a line after the range, delete the \n from the line before the
3041 // start of the row range and position the cursor there.
3042 edit_start = edit_start.saturating_sub(1);
3043 edit_end = buffer.len();
3044 cursor_buffer_row = rows.start.saturating_sub(1);
3045 }
3046
3047 let mut cursor = Point::new(cursor_buffer_row, 0).to_display_point(&display_map);
3048 *cursor.column_mut() =
3049 cmp::min(goal_display_column, display_map.line_len(cursor.row()));
3050
3051 new_cursors.push((
3052 selection.id,
3053 buffer.anchor_after(cursor.to_point(&display_map)),
3054 ));
3055 edit_ranges.push(edit_start..edit_end);
3056 }
3057
3058 self.transact(cx, |this, cx| {
3059 let buffer = this.buffer.update(cx, |buffer, cx| {
3060 buffer.edit(edit_ranges, "", cx);
3061 buffer.snapshot(cx)
3062 });
3063 let new_selections = new_cursors
3064 .into_iter()
3065 .map(|(id, cursor)| {
3066 let cursor = cursor.to_point(&buffer);
3067 Selection {
3068 id,
3069 start: cursor,
3070 end: cursor,
3071 reversed: false,
3072 goal: SelectionGoal::None,
3073 }
3074 })
3075 .collect();
3076 this.update_selections(new_selections, Some(Autoscroll::Fit), cx);
3077 });
3078 }
3079
3080 pub fn duplicate_line(&mut self, _: &DuplicateLine, cx: &mut ViewContext<Self>) {
3081 let selections = self.local_selections::<Point>(cx);
3082 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3083 let buffer = &display_map.buffer_snapshot;
3084
3085 let mut edits = Vec::new();
3086 let mut selections_iter = selections.iter().peekable();
3087 while let Some(selection) = selections_iter.next() {
3088 // Avoid duplicating the same lines twice.
3089 let mut rows = selection.spanned_rows(false, &display_map);
3090
3091 while let Some(next_selection) = selections_iter.peek() {
3092 let next_rows = next_selection.spanned_rows(false, &display_map);
3093 if next_rows.start <= rows.end - 1 {
3094 rows.end = next_rows.end;
3095 selections_iter.next().unwrap();
3096 } else {
3097 break;
3098 }
3099 }
3100
3101 // Copy the text from the selected row region and splice it at the start of the region.
3102 let start = Point::new(rows.start, 0);
3103 let end = Point::new(rows.end - 1, buffer.line_len(rows.end - 1));
3104 let text = buffer
3105 .text_for_range(start..end)
3106 .chain(Some("\n"))
3107 .collect::<String>();
3108 edits.push((start, text, rows.len() as u32));
3109 }
3110
3111 self.transact(cx, |this, cx| {
3112 this.buffer.update(cx, |buffer, cx| {
3113 for (point, text, _) in edits.into_iter().rev() {
3114 buffer.edit(Some(point..point), text, cx);
3115 }
3116 });
3117
3118 this.request_autoscroll(Autoscroll::Fit, cx);
3119 });
3120 }
3121
3122 pub fn move_line_up(&mut self, _: &MoveLineUp, cx: &mut ViewContext<Self>) {
3123 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3124 let buffer = self.buffer.read(cx).snapshot(cx);
3125
3126 let mut edits = Vec::new();
3127 let mut unfold_ranges = Vec::new();
3128 let mut refold_ranges = Vec::new();
3129
3130 let selections = self.local_selections::<Point>(cx);
3131 let mut selections = selections.iter().peekable();
3132 let mut contiguous_row_selections = Vec::new();
3133 let mut new_selections = Vec::new();
3134
3135 while let Some(selection) = selections.next() {
3136 // Find all the selections that span a contiguous row range
3137 contiguous_row_selections.push(selection.clone());
3138 let start_row = selection.start.row;
3139 let mut end_row = if selection.end.column > 0 || selection.is_empty() {
3140 display_map.next_line_boundary(selection.end).0.row + 1
3141 } else {
3142 selection.end.row
3143 };
3144
3145 while let Some(next_selection) = selections.peek() {
3146 if next_selection.start.row <= end_row {
3147 end_row = if next_selection.end.column > 0 || next_selection.is_empty() {
3148 display_map.next_line_boundary(next_selection.end).0.row + 1
3149 } else {
3150 next_selection.end.row
3151 };
3152 contiguous_row_selections.push(selections.next().unwrap().clone());
3153 } else {
3154 break;
3155 }
3156 }
3157
3158 // Move the text spanned by the row range to be before the line preceding the row range
3159 if start_row > 0 {
3160 let range_to_move = Point::new(start_row - 1, buffer.line_len(start_row - 1))
3161 ..Point::new(end_row - 1, buffer.line_len(end_row - 1));
3162 let insertion_point = display_map
3163 .prev_line_boundary(Point::new(start_row - 1, 0))
3164 .0;
3165
3166 // Don't move lines across excerpts
3167 if buffer
3168 .excerpt_boundaries_in_range((
3169 Bound::Excluded(insertion_point),
3170 Bound::Included(range_to_move.end),
3171 ))
3172 .next()
3173 .is_none()
3174 {
3175 let text = buffer
3176 .text_for_range(range_to_move.clone())
3177 .flat_map(|s| s.chars())
3178 .skip(1)
3179 .chain(['\n'])
3180 .collect::<String>();
3181
3182 edits.push((
3183 buffer.anchor_after(range_to_move.start)
3184 ..buffer.anchor_before(range_to_move.end),
3185 String::new(),
3186 ));
3187 let insertion_anchor = buffer.anchor_after(insertion_point);
3188 edits.push((insertion_anchor.clone()..insertion_anchor, text));
3189
3190 let row_delta = range_to_move.start.row - insertion_point.row + 1;
3191
3192 // Move selections up
3193 new_selections.extend(contiguous_row_selections.drain(..).map(
3194 |mut selection| {
3195 selection.start.row -= row_delta;
3196 selection.end.row -= row_delta;
3197 selection
3198 },
3199 ));
3200
3201 // Move folds up
3202 unfold_ranges.push(range_to_move.clone());
3203 for fold in display_map.folds_in_range(
3204 buffer.anchor_before(range_to_move.start)
3205 ..buffer.anchor_after(range_to_move.end),
3206 ) {
3207 let mut start = fold.start.to_point(&buffer);
3208 let mut end = fold.end.to_point(&buffer);
3209 start.row -= row_delta;
3210 end.row -= row_delta;
3211 refold_ranges.push(start..end);
3212 }
3213 }
3214 }
3215
3216 // If we didn't move line(s), preserve the existing selections
3217 new_selections.extend(contiguous_row_selections.drain(..));
3218 }
3219
3220 self.transact(cx, |this, cx| {
3221 this.unfold_ranges(unfold_ranges, true, cx);
3222 this.buffer.update(cx, |buffer, cx| {
3223 for (range, text) in edits {
3224 buffer.edit([range], text, cx);
3225 }
3226 });
3227 this.fold_ranges(refold_ranges, cx);
3228 this.update_selections(new_selections, Some(Autoscroll::Fit), cx);
3229 });
3230 }
3231
3232 pub fn move_line_down(&mut self, _: &MoveLineDown, cx: &mut ViewContext<Self>) {
3233 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3234 let buffer = self.buffer.read(cx).snapshot(cx);
3235
3236 let mut edits = Vec::new();
3237 let mut unfold_ranges = Vec::new();
3238 let mut refold_ranges = Vec::new();
3239
3240 let selections = self.local_selections::<Point>(cx);
3241 let mut selections = selections.iter().peekable();
3242 let mut contiguous_row_selections = Vec::new();
3243 let mut new_selections = Vec::new();
3244
3245 while let Some(selection) = selections.next() {
3246 // Find all the selections that span a contiguous row range
3247 contiguous_row_selections.push(selection.clone());
3248 let start_row = selection.start.row;
3249 let mut end_row = if selection.end.column > 0 || selection.is_empty() {
3250 display_map.next_line_boundary(selection.end).0.row + 1
3251 } else {
3252 selection.end.row
3253 };
3254
3255 while let Some(next_selection) = selections.peek() {
3256 if next_selection.start.row <= end_row {
3257 end_row = if next_selection.end.column > 0 || next_selection.is_empty() {
3258 display_map.next_line_boundary(next_selection.end).0.row + 1
3259 } else {
3260 next_selection.end.row
3261 };
3262 contiguous_row_selections.push(selections.next().unwrap().clone());
3263 } else {
3264 break;
3265 }
3266 }
3267
3268 // Move the text spanned by the row range to be after the last line of the row range
3269 if end_row <= buffer.max_point().row {
3270 let range_to_move = Point::new(start_row, 0)..Point::new(end_row, 0);
3271 let insertion_point = display_map.next_line_boundary(Point::new(end_row, 0)).0;
3272
3273 // Don't move lines across excerpt boundaries
3274 if buffer
3275 .excerpt_boundaries_in_range((
3276 Bound::Excluded(range_to_move.start),
3277 Bound::Included(insertion_point),
3278 ))
3279 .next()
3280 .is_none()
3281 {
3282 let mut text = String::from("\n");
3283 text.extend(buffer.text_for_range(range_to_move.clone()));
3284 text.pop(); // Drop trailing newline
3285 edits.push((
3286 buffer.anchor_after(range_to_move.start)
3287 ..buffer.anchor_before(range_to_move.end),
3288 String::new(),
3289 ));
3290 let insertion_anchor = buffer.anchor_after(insertion_point);
3291 edits.push((insertion_anchor.clone()..insertion_anchor, text));
3292
3293 let row_delta = insertion_point.row - range_to_move.end.row + 1;
3294
3295 // Move selections down
3296 new_selections.extend(contiguous_row_selections.drain(..).map(
3297 |mut selection| {
3298 selection.start.row += row_delta;
3299 selection.end.row += row_delta;
3300 selection
3301 },
3302 ));
3303
3304 // Move folds down
3305 unfold_ranges.push(range_to_move.clone());
3306 for fold in display_map.folds_in_range(
3307 buffer.anchor_before(range_to_move.start)
3308 ..buffer.anchor_after(range_to_move.end),
3309 ) {
3310 let mut start = fold.start.to_point(&buffer);
3311 let mut end = fold.end.to_point(&buffer);
3312 start.row += row_delta;
3313 end.row += row_delta;
3314 refold_ranges.push(start..end);
3315 }
3316 }
3317 }
3318
3319 // If we didn't move line(s), preserve the existing selections
3320 new_selections.extend(contiguous_row_selections.drain(..));
3321 }
3322
3323 self.transact(cx, |this, cx| {
3324 this.unfold_ranges(unfold_ranges, true, cx);
3325 this.buffer.update(cx, |buffer, cx| {
3326 for (range, text) in edits {
3327 buffer.edit([range], text, cx);
3328 }
3329 });
3330 this.fold_ranges(refold_ranges, cx);
3331 this.update_selections(new_selections, Some(Autoscroll::Fit), cx);
3332 });
3333 }
3334
3335 pub fn cut(&mut self, _: &Cut, cx: &mut ViewContext<Self>) {
3336 let mut text = String::new();
3337 let mut selections = self.local_selections::<Point>(cx);
3338 let mut clipboard_selections = Vec::with_capacity(selections.len());
3339 {
3340 let buffer = self.buffer.read(cx).read(cx);
3341 let max_point = buffer.max_point();
3342 for selection in &mut selections {
3343 let is_entire_line = selection.is_empty();
3344 if is_entire_line {
3345 selection.start = Point::new(selection.start.row, 0);
3346 selection.end = cmp::min(max_point, Point::new(selection.end.row + 1, 0));
3347 selection.goal = SelectionGoal::None;
3348 }
3349 let mut len = 0;
3350 for chunk in buffer.text_for_range(selection.start..selection.end) {
3351 text.push_str(chunk);
3352 len += chunk.len();
3353 }
3354 clipboard_selections.push(ClipboardSelection {
3355 len,
3356 is_entire_line,
3357 });
3358 }
3359 }
3360
3361 self.transact(cx, |this, cx| {
3362 this.update_selections(selections, Some(Autoscroll::Fit), cx);
3363 this.insert("", cx);
3364 cx.write_to_clipboard(ClipboardItem::new(text).with_metadata(clipboard_selections));
3365 });
3366 }
3367
3368 pub fn copy(&mut self, _: &Copy, cx: &mut ViewContext<Self>) {
3369 let selections = self.local_selections::<Point>(cx);
3370 let mut text = String::new();
3371 let mut clipboard_selections = Vec::with_capacity(selections.len());
3372 {
3373 let buffer = self.buffer.read(cx).read(cx);
3374 let max_point = buffer.max_point();
3375 for selection in selections.iter() {
3376 let mut start = selection.start;
3377 let mut end = selection.end;
3378 let is_entire_line = selection.is_empty();
3379 if is_entire_line {
3380 start = Point::new(start.row, 0);
3381 end = cmp::min(max_point, Point::new(start.row + 1, 0));
3382 }
3383 let mut len = 0;
3384 for chunk in buffer.text_for_range(start..end) {
3385 text.push_str(chunk);
3386 len += chunk.len();
3387 }
3388 clipboard_selections.push(ClipboardSelection {
3389 len,
3390 is_entire_line,
3391 });
3392 }
3393 }
3394
3395 cx.write_to_clipboard(ClipboardItem::new(text).with_metadata(clipboard_selections));
3396 }
3397
3398 pub fn paste(&mut self, _: &Paste, cx: &mut ViewContext<Self>) {
3399 self.transact(cx, |this, cx| {
3400 if let Some(item) = cx.as_mut().read_from_clipboard() {
3401 let clipboard_text = item.text();
3402 if let Some(mut clipboard_selections) = item.metadata::<Vec<ClipboardSelection>>() {
3403 let mut selections = this.local_selections::<usize>(cx);
3404 let all_selections_were_entire_line =
3405 clipboard_selections.iter().all(|s| s.is_entire_line);
3406 if clipboard_selections.len() != selections.len() {
3407 clipboard_selections.clear();
3408 }
3409
3410 let mut delta = 0_isize;
3411 let mut start_offset = 0;
3412 for (i, selection) in selections.iter_mut().enumerate() {
3413 let to_insert;
3414 let entire_line;
3415 if let Some(clipboard_selection) = clipboard_selections.get(i) {
3416 let end_offset = start_offset + clipboard_selection.len;
3417 to_insert = &clipboard_text[start_offset..end_offset];
3418 entire_line = clipboard_selection.is_entire_line;
3419 start_offset = end_offset
3420 } else {
3421 to_insert = clipboard_text.as_str();
3422 entire_line = all_selections_were_entire_line;
3423 }
3424
3425 selection.start = (selection.start as isize + delta) as usize;
3426 selection.end = (selection.end as isize + delta) as usize;
3427
3428 this.buffer.update(cx, |buffer, cx| {
3429 // If the corresponding selection was empty when this slice of the
3430 // clipboard text was written, then the entire line containing the
3431 // selection was copied. If this selection is also currently empty,
3432 // then paste the line before the current line of the buffer.
3433 let range = if selection.is_empty() && entire_line {
3434 let column =
3435 selection.start.to_point(&buffer.read(cx)).column as usize;
3436 let line_start = selection.start - column;
3437 line_start..line_start
3438 } else {
3439 selection.start..selection.end
3440 };
3441
3442 delta += to_insert.len() as isize - range.len() as isize;
3443 buffer.edit([range], to_insert, cx);
3444 selection.start += to_insert.len();
3445 selection.end = selection.start;
3446 });
3447 }
3448 this.update_selections(selections, Some(Autoscroll::Fit), cx);
3449 } else {
3450 this.insert(clipboard_text, cx);
3451 }
3452 }
3453 });
3454 }
3455
3456 pub fn undo(&mut self, _: &Undo, cx: &mut ViewContext<Self>) {
3457 if let Some(tx_id) = self.buffer.update(cx, |buffer, cx| buffer.undo(cx)) {
3458 if let Some((selections, _)) = self.selection_history.get(&tx_id).cloned() {
3459 self.set_selections(selections, None, true, cx);
3460 }
3461 self.request_autoscroll(Autoscroll::Fit, cx);
3462 cx.emit(Event::Edited);
3463 }
3464 }
3465
3466 pub fn redo(&mut self, _: &Redo, cx: &mut ViewContext<Self>) {
3467 if let Some(tx_id) = self.buffer.update(cx, |buffer, cx| buffer.redo(cx)) {
3468 if let Some((_, Some(selections))) = self.selection_history.get(&tx_id).cloned() {
3469 self.set_selections(selections, None, true, cx);
3470 }
3471 self.request_autoscroll(Autoscroll::Fit, cx);
3472 cx.emit(Event::Edited);
3473 }
3474 }
3475
3476 pub fn finalize_last_transaction(&mut self, cx: &mut ViewContext<Self>) {
3477 self.buffer
3478 .update(cx, |buffer, cx| buffer.finalize_last_transaction(cx));
3479 }
3480
3481 pub fn move_left(&mut self, _: &MoveLeft, cx: &mut ViewContext<Self>) {
3482 self.move_selections(cx, |map, selection| {
3483 let cursor = if selection.is_empty() {
3484 movement::left(map, selection.start)
3485 } else {
3486 selection.start
3487 };
3488 selection.collapse_to(cursor, SelectionGoal::None);
3489 });
3490 }
3491
3492 pub fn select_left(&mut self, _: &SelectLeft, cx: &mut ViewContext<Self>) {
3493 self.move_selection_heads(cx, |map, head, _| {
3494 (movement::left(map, head), SelectionGoal::None)
3495 });
3496 }
3497
3498 pub fn move_right(&mut self, _: &MoveRight, cx: &mut ViewContext<Self>) {
3499 self.move_selections(cx, |map, selection| {
3500 let cursor = if selection.is_empty() {
3501 movement::right(map, selection.end)
3502 } else {
3503 selection.end
3504 };
3505 selection.collapse_to(cursor, SelectionGoal::None)
3506 });
3507 }
3508
3509 pub fn select_right(&mut self, _: &SelectRight, cx: &mut ViewContext<Self>) {
3510 self.move_selection_heads(cx, |map, head, _| {
3511 (movement::right(map, head), SelectionGoal::None)
3512 });
3513 }
3514
3515 pub fn move_up(&mut self, _: &MoveUp, cx: &mut ViewContext<Self>) {
3516 if self.take_rename(true, cx).is_some() {
3517 return;
3518 }
3519
3520 if let Some(context_menu) = self.context_menu.as_mut() {
3521 if context_menu.select_prev(cx) {
3522 return;
3523 }
3524 }
3525
3526 if matches!(self.mode, EditorMode::SingleLine) {
3527 cx.propagate_action();
3528 return;
3529 }
3530
3531 self.move_selections(cx, |map, selection| {
3532 if !selection.is_empty() {
3533 selection.goal = SelectionGoal::None;
3534 }
3535 let (cursor, goal) = movement::up(&map, selection.start, selection.goal);
3536 selection.collapse_to(cursor, goal);
3537 });
3538 }
3539
3540 pub fn select_up(&mut self, _: &SelectUp, cx: &mut ViewContext<Self>) {
3541 self.move_selection_heads(cx, movement::up)
3542 }
3543
3544 pub fn move_down(&mut self, _: &MoveDown, cx: &mut ViewContext<Self>) {
3545 self.take_rename(true, cx);
3546
3547 if let Some(context_menu) = self.context_menu.as_mut() {
3548 if context_menu.select_next(cx) {
3549 return;
3550 }
3551 }
3552
3553 if matches!(self.mode, EditorMode::SingleLine) {
3554 cx.propagate_action();
3555 return;
3556 }
3557
3558 self.move_selections(cx, |map, selection| {
3559 if !selection.is_empty() {
3560 selection.goal = SelectionGoal::None;
3561 }
3562 let (cursor, goal) = movement::down(&map, selection.end, selection.goal);
3563 selection.collapse_to(cursor, goal);
3564 });
3565 }
3566
3567 pub fn select_down(&mut self, _: &SelectDown, cx: &mut ViewContext<Self>) {
3568 self.move_selection_heads(cx, movement::down)
3569 }
3570
3571 pub fn move_to_previous_word_start(
3572 &mut self,
3573 _: &MoveToPreviousWordStart,
3574 cx: &mut ViewContext<Self>,
3575 ) {
3576 self.move_cursors(cx, |map, head, _| {
3577 (
3578 movement::previous_word_start(map, head),
3579 SelectionGoal::None,
3580 )
3581 });
3582 }
3583
3584 pub fn move_to_previous_subword_start(
3585 &mut self,
3586 _: &MoveToPreviousSubwordStart,
3587 cx: &mut ViewContext<Self>,
3588 ) {
3589 self.move_cursors(cx, |map, head, _| {
3590 (
3591 movement::previous_subword_start(map, head),
3592 SelectionGoal::None,
3593 )
3594 });
3595 }
3596
3597 pub fn select_to_previous_word_start(
3598 &mut self,
3599 _: &SelectToPreviousWordStart,
3600 cx: &mut ViewContext<Self>,
3601 ) {
3602 self.move_selection_heads(cx, |map, head, _| {
3603 (
3604 movement::previous_word_start(map, head),
3605 SelectionGoal::None,
3606 )
3607 });
3608 }
3609
3610 pub fn select_to_previous_subword_start(
3611 &mut self,
3612 _: &SelectToPreviousSubwordStart,
3613 cx: &mut ViewContext<Self>,
3614 ) {
3615 self.move_selection_heads(cx, |map, head, _| {
3616 (
3617 movement::previous_subword_start(map, head),
3618 SelectionGoal::None,
3619 )
3620 });
3621 }
3622
3623 pub fn delete_to_previous_word_start(
3624 &mut self,
3625 _: &DeleteToPreviousWordStart,
3626 cx: &mut ViewContext<Self>,
3627 ) {
3628 self.transact(cx, |this, cx| {
3629 this.move_selections(cx, |map, selection| {
3630 if selection.is_empty() {
3631 let cursor = movement::previous_word_start(map, selection.head());
3632 selection.set_head(cursor, SelectionGoal::None);
3633 }
3634 });
3635 this.insert("", cx);
3636 });
3637 }
3638
3639 pub fn delete_to_previous_subword_start(
3640 &mut self,
3641 _: &DeleteToPreviousSubwordStart,
3642 cx: &mut ViewContext<Self>,
3643 ) {
3644 self.transact(cx, |this, cx| {
3645 this.move_selections(cx, |map, selection| {
3646 if selection.is_empty() {
3647 let cursor = movement::previous_subword_start(map, selection.head());
3648 selection.set_head(cursor, SelectionGoal::None);
3649 }
3650 });
3651 this.insert("", cx);
3652 });
3653 }
3654
3655 pub fn move_to_next_word_end(&mut self, _: &MoveToNextWordEnd, cx: &mut ViewContext<Self>) {
3656 self.move_cursors(cx, |map, head, _| {
3657 (movement::next_word_end(map, head), SelectionGoal::None)
3658 });
3659 }
3660
3661 pub fn move_to_next_subword_end(
3662 &mut self,
3663 _: &MoveToNextSubwordEnd,
3664 cx: &mut ViewContext<Self>,
3665 ) {
3666 self.move_cursors(cx, |map, head, _| {
3667 (movement::next_subword_end(map, head), SelectionGoal::None)
3668 });
3669 }
3670
3671 pub fn select_to_next_word_end(&mut self, _: &SelectToNextWordEnd, cx: &mut ViewContext<Self>) {
3672 self.move_selection_heads(cx, |map, head, _| {
3673 (movement::next_word_end(map, head), SelectionGoal::None)
3674 });
3675 }
3676
3677 pub fn select_to_next_subword_end(
3678 &mut self,
3679 _: &SelectToNextSubwordEnd,
3680 cx: &mut ViewContext<Self>,
3681 ) {
3682 self.move_selection_heads(cx, |map, head, _| {
3683 (movement::next_subword_end(map, head), SelectionGoal::None)
3684 });
3685 }
3686
3687 pub fn delete_to_next_word_end(&mut self, _: &DeleteToNextWordEnd, cx: &mut ViewContext<Self>) {
3688 self.transact(cx, |this, cx| {
3689 this.move_selections(cx, |map, selection| {
3690 if selection.is_empty() {
3691 let cursor = movement::next_word_end(map, selection.head());
3692 selection.set_head(cursor, SelectionGoal::None);
3693 }
3694 });
3695 this.insert("", cx);
3696 });
3697 }
3698
3699 pub fn delete_to_next_subword_end(
3700 &mut self,
3701 _: &DeleteToNextSubwordEnd,
3702 cx: &mut ViewContext<Self>,
3703 ) {
3704 self.transact(cx, |this, cx| {
3705 this.move_selections(cx, |map, selection| {
3706 if selection.is_empty() {
3707 let cursor = movement::next_subword_end(map, selection.head());
3708 selection.set_head(cursor, SelectionGoal::None);
3709 }
3710 });
3711 this.insert("", cx);
3712 });
3713 }
3714
3715 pub fn move_to_beginning_of_line(
3716 &mut self,
3717 _: &MoveToBeginningOfLine,
3718 cx: &mut ViewContext<Self>,
3719 ) {
3720 self.move_cursors(cx, |map, head, _| {
3721 (
3722 movement::line_beginning(map, head, true),
3723 SelectionGoal::None,
3724 )
3725 });
3726 }
3727
3728 pub fn select_to_beginning_of_line(
3729 &mut self,
3730 SelectToBeginningOfLine(stop_at_soft_boundaries): &SelectToBeginningOfLine,
3731 cx: &mut ViewContext<Self>,
3732 ) {
3733 self.move_selection_heads(cx, |map, head, _| {
3734 (
3735 movement::line_beginning(map, head, *stop_at_soft_boundaries),
3736 SelectionGoal::None,
3737 )
3738 });
3739 }
3740
3741 pub fn delete_to_beginning_of_line(
3742 &mut self,
3743 _: &DeleteToBeginningOfLine,
3744 cx: &mut ViewContext<Self>,
3745 ) {
3746 self.transact(cx, |this, cx| {
3747 this.select_to_beginning_of_line(&SelectToBeginningOfLine(false), cx);
3748 this.backspace(&Backspace, cx);
3749 });
3750 }
3751
3752 pub fn move_to_end_of_line(&mut self, _: &MoveToEndOfLine, cx: &mut ViewContext<Self>) {
3753 self.move_cursors(cx, |map, head, _| {
3754 (movement::line_end(map, head, true), SelectionGoal::None)
3755 });
3756 }
3757
3758 pub fn select_to_end_of_line(
3759 &mut self,
3760 SelectToEndOfLine(stop_at_soft_boundaries): &SelectToEndOfLine,
3761 cx: &mut ViewContext<Self>,
3762 ) {
3763 self.move_selection_heads(cx, |map, head, _| {
3764 (
3765 movement::line_end(map, head, *stop_at_soft_boundaries),
3766 SelectionGoal::None,
3767 )
3768 });
3769 }
3770
3771 pub fn delete_to_end_of_line(&mut self, _: &DeleteToEndOfLine, cx: &mut ViewContext<Self>) {
3772 self.transact(cx, |this, cx| {
3773 this.select_to_end_of_line(&SelectToEndOfLine(false), cx);
3774 this.delete(&Delete, cx);
3775 });
3776 }
3777
3778 pub fn cut_to_end_of_line(&mut self, _: &CutToEndOfLine, cx: &mut ViewContext<Self>) {
3779 self.transact(cx, |this, cx| {
3780 this.select_to_end_of_line(&SelectToEndOfLine(false), cx);
3781 this.cut(&Cut, cx);
3782 });
3783 }
3784
3785 pub fn move_to_beginning(&mut self, _: &MoveToBeginning, cx: &mut ViewContext<Self>) {
3786 if matches!(self.mode, EditorMode::SingleLine) {
3787 cx.propagate_action();
3788 return;
3789 }
3790
3791 let selection = Selection {
3792 id: post_inc(&mut self.next_selection_id),
3793 start: 0,
3794 end: 0,
3795 reversed: false,
3796 goal: SelectionGoal::None,
3797 };
3798 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
3799 }
3800
3801 pub fn select_to_beginning(&mut self, _: &SelectToBeginning, cx: &mut ViewContext<Self>) {
3802 let mut selection = self.local_selections::<Point>(cx).last().unwrap().clone();
3803 selection.set_head(Point::zero(), SelectionGoal::None);
3804 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
3805 }
3806
3807 pub fn move_to_end(&mut self, _: &MoveToEnd, cx: &mut ViewContext<Self>) {
3808 if matches!(self.mode, EditorMode::SingleLine) {
3809 cx.propagate_action();
3810 return;
3811 }
3812
3813 let cursor = self.buffer.read(cx).read(cx).len();
3814 let selection = Selection {
3815 id: post_inc(&mut self.next_selection_id),
3816 start: cursor,
3817 end: cursor,
3818 reversed: false,
3819 goal: SelectionGoal::None,
3820 };
3821 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
3822 }
3823
3824 pub fn set_nav_history(&mut self, nav_history: Option<ItemNavHistory>) {
3825 self.nav_history = nav_history;
3826 }
3827
3828 pub fn nav_history(&self) -> Option<&ItemNavHistory> {
3829 self.nav_history.as_ref()
3830 }
3831
3832 fn push_to_nav_history(
3833 &self,
3834 position: Anchor,
3835 new_position: Option<Point>,
3836 cx: &mut ViewContext<Self>,
3837 ) {
3838 if let Some(nav_history) = &self.nav_history {
3839 let buffer = self.buffer.read(cx).read(cx);
3840 let offset = position.to_offset(&buffer);
3841 let point = position.to_point(&buffer);
3842 drop(buffer);
3843
3844 if let Some(new_position) = new_position {
3845 let row_delta = (new_position.row as i64 - point.row as i64).abs();
3846 if row_delta < MIN_NAVIGATION_HISTORY_ROW_DELTA {
3847 return;
3848 }
3849 }
3850
3851 nav_history.push(Some(NavigationData {
3852 anchor: position,
3853 offset,
3854 }));
3855 }
3856 }
3857
3858 pub fn select_to_end(&mut self, _: &SelectToEnd, cx: &mut ViewContext<Self>) {
3859 let mut selection = self.local_selections::<usize>(cx).first().unwrap().clone();
3860 selection.set_head(self.buffer.read(cx).read(cx).len(), SelectionGoal::None);
3861 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
3862 }
3863
3864 pub fn select_all(&mut self, _: &SelectAll, cx: &mut ViewContext<Self>) {
3865 let selection = Selection {
3866 id: post_inc(&mut self.next_selection_id),
3867 start: 0,
3868 end: self.buffer.read(cx).read(cx).len(),
3869 reversed: false,
3870 goal: SelectionGoal::None,
3871 };
3872 self.update_selections(vec![selection], None, cx);
3873 }
3874
3875 pub fn select_line(&mut self, _: &SelectLine, cx: &mut ViewContext<Self>) {
3876 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3877 let mut selections = self.local_selections::<Point>(cx);
3878 let max_point = display_map.buffer_snapshot.max_point();
3879 for selection in &mut selections {
3880 let rows = selection.spanned_rows(true, &display_map);
3881 selection.start = Point::new(rows.start, 0);
3882 selection.end = cmp::min(max_point, Point::new(rows.end, 0));
3883 selection.reversed = false;
3884 }
3885 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3886 }
3887
3888 pub fn split_selection_into_lines(
3889 &mut self,
3890 _: &SplitSelectionIntoLines,
3891 cx: &mut ViewContext<Self>,
3892 ) {
3893 let mut to_unfold = Vec::new();
3894 let mut new_selections = Vec::new();
3895 {
3896 let selections = self.local_selections::<Point>(cx);
3897 let buffer = self.buffer.read(cx).read(cx);
3898 for selection in selections {
3899 for row in selection.start.row..selection.end.row {
3900 let cursor = Point::new(row, buffer.line_len(row));
3901 new_selections.push(Selection {
3902 id: post_inc(&mut self.next_selection_id),
3903 start: cursor,
3904 end: cursor,
3905 reversed: false,
3906 goal: SelectionGoal::None,
3907 });
3908 }
3909 new_selections.push(Selection {
3910 id: selection.id,
3911 start: selection.end,
3912 end: selection.end,
3913 reversed: false,
3914 goal: SelectionGoal::None,
3915 });
3916 to_unfold.push(selection.start..selection.end);
3917 }
3918 }
3919 self.unfold_ranges(to_unfold, true, cx);
3920 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
3921 }
3922
3923 pub fn add_selection_above(&mut self, _: &AddSelectionAbove, cx: &mut ViewContext<Self>) {
3924 self.add_selection(true, cx);
3925 }
3926
3927 pub fn add_selection_below(&mut self, _: &AddSelectionBelow, cx: &mut ViewContext<Self>) {
3928 self.add_selection(false, cx);
3929 }
3930
3931 fn add_selection(&mut self, above: bool, cx: &mut ViewContext<Self>) {
3932 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3933 let mut selections = self.local_selections::<Point>(cx);
3934 let mut state = self.add_selections_state.take().unwrap_or_else(|| {
3935 let oldest_selection = selections.iter().min_by_key(|s| s.id).unwrap().clone();
3936 let range = oldest_selection.display_range(&display_map).sorted();
3937 let columns = cmp::min(range.start.column(), range.end.column())
3938 ..cmp::max(range.start.column(), range.end.column());
3939
3940 selections.clear();
3941 let mut stack = Vec::new();
3942 for row in range.start.row()..=range.end.row() {
3943 if let Some(selection) = self.build_columnar_selection(
3944 &display_map,
3945 row,
3946 &columns,
3947 oldest_selection.reversed,
3948 ) {
3949 stack.push(selection.id);
3950 selections.push(selection);
3951 }
3952 }
3953
3954 if above {
3955 stack.reverse();
3956 }
3957
3958 AddSelectionsState { above, stack }
3959 });
3960
3961 let last_added_selection = *state.stack.last().unwrap();
3962 let mut new_selections = Vec::new();
3963 if above == state.above {
3964 let end_row = if above {
3965 0
3966 } else {
3967 display_map.max_point().row()
3968 };
3969
3970 'outer: for selection in selections {
3971 if selection.id == last_added_selection {
3972 let range = selection.display_range(&display_map).sorted();
3973 debug_assert_eq!(range.start.row(), range.end.row());
3974 let mut row = range.start.row();
3975 let columns = if let SelectionGoal::ColumnRange { start, end } = selection.goal
3976 {
3977 start..end
3978 } else {
3979 cmp::min(range.start.column(), range.end.column())
3980 ..cmp::max(range.start.column(), range.end.column())
3981 };
3982
3983 while row != end_row {
3984 if above {
3985 row -= 1;
3986 } else {
3987 row += 1;
3988 }
3989
3990 if let Some(new_selection) = self.build_columnar_selection(
3991 &display_map,
3992 row,
3993 &columns,
3994 selection.reversed,
3995 ) {
3996 state.stack.push(new_selection.id);
3997 if above {
3998 new_selections.push(new_selection);
3999 new_selections.push(selection);
4000 } else {
4001 new_selections.push(selection);
4002 new_selections.push(new_selection);
4003 }
4004
4005 continue 'outer;
4006 }
4007 }
4008 }
4009
4010 new_selections.push(selection);
4011 }
4012 } else {
4013 new_selections = selections;
4014 new_selections.retain(|s| s.id != last_added_selection);
4015 state.stack.pop();
4016 }
4017
4018 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
4019 if state.stack.len() > 1 {
4020 self.add_selections_state = Some(state);
4021 }
4022 }
4023
4024 pub fn select_next(&mut self, action: &SelectNext, cx: &mut ViewContext<Self>) {
4025 let replace_newest = action.0;
4026 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
4027 let buffer = &display_map.buffer_snapshot;
4028 let mut selections = self.local_selections::<usize>(cx);
4029 if let Some(mut select_next_state) = self.select_next_state.take() {
4030 let query = &select_next_state.query;
4031 if !select_next_state.done {
4032 let first_selection = selections.iter().min_by_key(|s| s.id).unwrap();
4033 let last_selection = selections.iter().max_by_key(|s| s.id).unwrap();
4034 let mut next_selected_range = None;
4035
4036 let bytes_after_last_selection =
4037 buffer.bytes_in_range(last_selection.end..buffer.len());
4038 let bytes_before_first_selection = buffer.bytes_in_range(0..first_selection.start);
4039 let query_matches = query
4040 .stream_find_iter(bytes_after_last_selection)
4041 .map(|result| (last_selection.end, result))
4042 .chain(
4043 query
4044 .stream_find_iter(bytes_before_first_selection)
4045 .map(|result| (0, result)),
4046 );
4047 for (start_offset, query_match) in query_matches {
4048 let query_match = query_match.unwrap(); // can only fail due to I/O
4049 let offset_range =
4050 start_offset + query_match.start()..start_offset + query_match.end();
4051 let display_range = offset_range.start.to_display_point(&display_map)
4052 ..offset_range.end.to_display_point(&display_map);
4053
4054 if !select_next_state.wordwise
4055 || (!movement::is_inside_word(&display_map, display_range.start)
4056 && !movement::is_inside_word(&display_map, display_range.end))
4057 {
4058 next_selected_range = Some(offset_range);
4059 break;
4060 }
4061 }
4062
4063 if let Some(next_selected_range) = next_selected_range {
4064 if replace_newest {
4065 if let Some(newest_id) =
4066 selections.iter().max_by_key(|s| s.id).map(|s| s.id)
4067 {
4068 selections.retain(|s| s.id != newest_id);
4069 }
4070 }
4071 selections.push(Selection {
4072 id: post_inc(&mut self.next_selection_id),
4073 start: next_selected_range.start,
4074 end: next_selected_range.end,
4075 reversed: false,
4076 goal: SelectionGoal::None,
4077 });
4078 self.unfold_ranges([next_selected_range], false, cx);
4079 self.update_selections(selections, Some(Autoscroll::Newest), cx);
4080 } else {
4081 select_next_state.done = true;
4082 }
4083 }
4084
4085 self.select_next_state = Some(select_next_state);
4086 } else if selections.len() == 1 {
4087 let selection = selections.last_mut().unwrap();
4088 if selection.start == selection.end {
4089 let word_range = movement::surrounding_word(
4090 &display_map,
4091 selection.start.to_display_point(&display_map),
4092 );
4093 selection.start = word_range.start.to_offset(&display_map, Bias::Left);
4094 selection.end = word_range.end.to_offset(&display_map, Bias::Left);
4095 selection.goal = SelectionGoal::None;
4096 selection.reversed = false;
4097
4098 let query = buffer
4099 .text_for_range(selection.start..selection.end)
4100 .collect::<String>();
4101 let select_state = SelectNextState {
4102 query: AhoCorasick::new_auto_configured(&[query]),
4103 wordwise: true,
4104 done: false,
4105 };
4106 self.unfold_ranges([selection.start..selection.end], false, cx);
4107 self.update_selections(selections, Some(Autoscroll::Newest), cx);
4108 self.select_next_state = Some(select_state);
4109 } else {
4110 let query = buffer
4111 .text_for_range(selection.start..selection.end)
4112 .collect::<String>();
4113 self.select_next_state = Some(SelectNextState {
4114 query: AhoCorasick::new_auto_configured(&[query]),
4115 wordwise: false,
4116 done: false,
4117 });
4118 self.select_next(action, cx);
4119 }
4120 }
4121 }
4122
4123 pub fn toggle_comments(&mut self, _: &ToggleComments, cx: &mut ViewContext<Self>) {
4124 // Get the line comment prefix. Split its trailing whitespace into a separate string,
4125 // as that portion won't be used for detecting if a line is a comment.
4126 let full_comment_prefix =
4127 if let Some(prefix) = self.language(cx).and_then(|l| l.line_comment_prefix()) {
4128 prefix.to_string()
4129 } else {
4130 return;
4131 };
4132 let comment_prefix = full_comment_prefix.trim_end_matches(' ');
4133 let comment_prefix_whitespace = &full_comment_prefix[comment_prefix.len()..];
4134
4135 self.transact(cx, |this, cx| {
4136 let mut selections = this.local_selections::<Point>(cx);
4137 let mut all_selection_lines_are_comments = true;
4138 let mut edit_ranges = Vec::new();
4139 let mut last_toggled_row = None;
4140 this.buffer.update(cx, |buffer, cx| {
4141 for selection in &mut selections {
4142 edit_ranges.clear();
4143 let snapshot = buffer.snapshot(cx);
4144
4145 let end_row =
4146 if selection.end.row > selection.start.row && selection.end.column == 0 {
4147 selection.end.row
4148 } else {
4149 selection.end.row + 1
4150 };
4151
4152 for row in selection.start.row..end_row {
4153 // If multiple selections contain a given row, avoid processing that
4154 // row more than once.
4155 if last_toggled_row == Some(row) {
4156 continue;
4157 } else {
4158 last_toggled_row = Some(row);
4159 }
4160
4161 if snapshot.is_line_blank(row) {
4162 continue;
4163 }
4164
4165 let start = Point::new(row, snapshot.indent_column_for_line(row));
4166 let mut line_bytes = snapshot
4167 .bytes_in_range(start..snapshot.max_point())
4168 .flatten()
4169 .copied();
4170
4171 // If this line currently begins with the line comment prefix, then record
4172 // the range containing the prefix.
4173 if all_selection_lines_are_comments
4174 && line_bytes
4175 .by_ref()
4176 .take(comment_prefix.len())
4177 .eq(comment_prefix.bytes())
4178 {
4179 // Include any whitespace that matches the comment prefix.
4180 let matching_whitespace_len = line_bytes
4181 .zip(comment_prefix_whitespace.bytes())
4182 .take_while(|(a, b)| a == b)
4183 .count()
4184 as u32;
4185 let end = Point::new(
4186 row,
4187 start.column
4188 + comment_prefix.len() as u32
4189 + matching_whitespace_len,
4190 );
4191 edit_ranges.push(start..end);
4192 }
4193 // If this line does not begin with the line comment prefix, then record
4194 // the position where the prefix should be inserted.
4195 else {
4196 all_selection_lines_are_comments = false;
4197 edit_ranges.push(start..start);
4198 }
4199 }
4200
4201 if !edit_ranges.is_empty() {
4202 if all_selection_lines_are_comments {
4203 buffer.edit(edit_ranges.iter().cloned(), "", cx);
4204 } else {
4205 let min_column =
4206 edit_ranges.iter().map(|r| r.start.column).min().unwrap();
4207 let edit_ranges = edit_ranges.iter().map(|range| {
4208 let position = Point::new(range.start.row, min_column);
4209 position..position
4210 });
4211 buffer.edit(edit_ranges, &full_comment_prefix, cx);
4212 }
4213 }
4214 }
4215 });
4216
4217 this.update_selections(
4218 this.local_selections::<usize>(cx),
4219 Some(Autoscroll::Fit),
4220 cx,
4221 );
4222 });
4223 }
4224
4225 pub fn select_larger_syntax_node(
4226 &mut self,
4227 _: &SelectLargerSyntaxNode,
4228 cx: &mut ViewContext<Self>,
4229 ) {
4230 let old_selections = self.local_selections::<usize>(cx).into_boxed_slice();
4231 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
4232 let buffer = self.buffer.read(cx).snapshot(cx);
4233
4234 let mut stack = mem::take(&mut self.select_larger_syntax_node_stack);
4235 let mut selected_larger_node = false;
4236 let new_selections = old_selections
4237 .iter()
4238 .map(|selection| {
4239 let old_range = selection.start..selection.end;
4240 let mut new_range = old_range.clone();
4241 while let Some(containing_range) =
4242 buffer.range_for_syntax_ancestor(new_range.clone())
4243 {
4244 new_range = containing_range;
4245 if !display_map.intersects_fold(new_range.start)
4246 && !display_map.intersects_fold(new_range.end)
4247 {
4248 break;
4249 }
4250 }
4251
4252 selected_larger_node |= new_range != old_range;
4253 Selection {
4254 id: selection.id,
4255 start: new_range.start,
4256 end: new_range.end,
4257 goal: SelectionGoal::None,
4258 reversed: selection.reversed,
4259 }
4260 })
4261 .collect::<Vec<_>>();
4262
4263 if selected_larger_node {
4264 stack.push(old_selections);
4265 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
4266 }
4267 self.select_larger_syntax_node_stack = stack;
4268 }
4269
4270 pub fn select_smaller_syntax_node(
4271 &mut self,
4272 _: &SelectSmallerSyntaxNode,
4273 cx: &mut ViewContext<Self>,
4274 ) {
4275 let mut stack = mem::take(&mut self.select_larger_syntax_node_stack);
4276 if let Some(selections) = stack.pop() {
4277 self.update_selections(selections.to_vec(), Some(Autoscroll::Fit), cx);
4278 }
4279 self.select_larger_syntax_node_stack = stack;
4280 }
4281
4282 pub fn move_to_enclosing_bracket(
4283 &mut self,
4284 _: &MoveToEnclosingBracket,
4285 cx: &mut ViewContext<Self>,
4286 ) {
4287 let mut selections = self.local_selections::<usize>(cx);
4288 let buffer = self.buffer.read(cx).snapshot(cx);
4289 for selection in &mut selections {
4290 if let Some((open_range, close_range)) =
4291 buffer.enclosing_bracket_ranges(selection.start..selection.end)
4292 {
4293 let close_range = close_range.to_inclusive();
4294 let destination = if close_range.contains(&selection.start)
4295 && close_range.contains(&selection.end)
4296 {
4297 open_range.end
4298 } else {
4299 *close_range.start()
4300 };
4301 selection.start = destination;
4302 selection.end = destination;
4303 }
4304 }
4305
4306 self.update_selections(selections, Some(Autoscroll::Fit), cx);
4307 }
4308
4309 pub fn go_to_diagnostic(
4310 &mut self,
4311 &GoToDiagnostic(direction): &GoToDiagnostic,
4312 cx: &mut ViewContext<Self>,
4313 ) {
4314 let buffer = self.buffer.read(cx).snapshot(cx);
4315 let selection = self.newest_selection_with_snapshot::<usize>(&buffer);
4316 let mut active_primary_range = self.active_diagnostics.as_ref().map(|active_diagnostics| {
4317 active_diagnostics
4318 .primary_range
4319 .to_offset(&buffer)
4320 .to_inclusive()
4321 });
4322 let mut search_start = if let Some(active_primary_range) = active_primary_range.as_ref() {
4323 if active_primary_range.contains(&selection.head()) {
4324 *active_primary_range.end()
4325 } else {
4326 selection.head()
4327 }
4328 } else {
4329 selection.head()
4330 };
4331
4332 loop {
4333 let mut diagnostics = if direction == Direction::Prev {
4334 buffer.diagnostics_in_range::<_, usize>(0..search_start, true)
4335 } else {
4336 buffer.diagnostics_in_range::<_, usize>(search_start..buffer.len(), false)
4337 };
4338 let group = diagnostics.find_map(|entry| {
4339 if entry.diagnostic.is_primary
4340 && entry.diagnostic.severity <= DiagnosticSeverity::WARNING
4341 && !entry.range.is_empty()
4342 && Some(entry.range.end) != active_primary_range.as_ref().map(|r| *r.end())
4343 {
4344 Some((entry.range, entry.diagnostic.group_id))
4345 } else {
4346 None
4347 }
4348 });
4349
4350 if let Some((primary_range, group_id)) = group {
4351 self.activate_diagnostics(group_id, cx);
4352 self.update_selections(
4353 vec![Selection {
4354 id: selection.id,
4355 start: primary_range.start,
4356 end: primary_range.start,
4357 reversed: false,
4358 goal: SelectionGoal::None,
4359 }],
4360 Some(Autoscroll::Center),
4361 cx,
4362 );
4363 break;
4364 } else {
4365 // Cycle around to the start of the buffer, potentially moving back to the start of
4366 // the currently active diagnostic.
4367 active_primary_range.take();
4368 if direction == Direction::Prev {
4369 if search_start == buffer.len() {
4370 break;
4371 } else {
4372 search_start = buffer.len();
4373 }
4374 } else {
4375 if search_start == 0 {
4376 break;
4377 } else {
4378 search_start = 0;
4379 }
4380 }
4381 }
4382 }
4383 }
4384
4385 pub fn go_to_definition(
4386 workspace: &mut Workspace,
4387 _: &GoToDefinition,
4388 cx: &mut ViewContext<Workspace>,
4389 ) {
4390 let active_item = workspace.active_item(cx);
4391 let editor_handle = if let Some(editor) = active_item
4392 .as_ref()
4393 .and_then(|item| item.act_as::<Self>(cx))
4394 {
4395 editor
4396 } else {
4397 return;
4398 };
4399
4400 let editor = editor_handle.read(cx);
4401 let head = editor.newest_selection::<usize>(cx).head();
4402 let (buffer, head) =
4403 if let Some(text_anchor) = editor.buffer.read(cx).text_anchor_for_position(head, cx) {
4404 text_anchor
4405 } else {
4406 return;
4407 };
4408
4409 let project = workspace.project().clone();
4410 let definitions = project.update(cx, |project, cx| project.definition(&buffer, head, cx));
4411 cx.spawn(|workspace, mut cx| async move {
4412 let definitions = definitions.await?;
4413 workspace.update(&mut cx, |workspace, cx| {
4414 let nav_history = workspace.active_pane().read(cx).nav_history().clone();
4415 for definition in definitions {
4416 let range = definition.range.to_offset(definition.buffer.read(cx));
4417
4418 let target_editor_handle = workspace.open_project_item(definition.buffer, cx);
4419 target_editor_handle.update(cx, |target_editor, cx| {
4420 // When selecting a definition in a different buffer, disable the nav history
4421 // to avoid creating a history entry at the previous cursor location.
4422 if editor_handle != target_editor_handle {
4423 nav_history.borrow_mut().disable();
4424 }
4425 target_editor.select_ranges([range], Some(Autoscroll::Center), cx);
4426 nav_history.borrow_mut().enable();
4427 });
4428 }
4429 });
4430
4431 Ok::<(), anyhow::Error>(())
4432 })
4433 .detach_and_log_err(cx);
4434 }
4435
4436 pub fn find_all_references(
4437 workspace: &mut Workspace,
4438 _: &FindAllReferences,
4439 cx: &mut ViewContext<Workspace>,
4440 ) -> Option<Task<Result<()>>> {
4441 let active_item = workspace.active_item(cx)?;
4442 let editor_handle = active_item.act_as::<Self>(cx)?;
4443
4444 let editor = editor_handle.read(cx);
4445 let head = editor.newest_selection::<usize>(cx).head();
4446 let (buffer, head) = editor.buffer.read(cx).text_anchor_for_position(head, cx)?;
4447 let replica_id = editor.replica_id(cx);
4448
4449 let project = workspace.project().clone();
4450 let references = project.update(cx, |project, cx| project.references(&buffer, head, cx));
4451 Some(cx.spawn(|workspace, mut cx| async move {
4452 let mut locations = references.await?;
4453 if locations.is_empty() {
4454 return Ok(());
4455 }
4456
4457 locations.sort_by_key(|location| location.buffer.id());
4458 let mut locations = locations.into_iter().peekable();
4459 let mut ranges_to_highlight = Vec::new();
4460
4461 let excerpt_buffer = cx.add_model(|cx| {
4462 let mut symbol_name = None;
4463 let mut multibuffer = MultiBuffer::new(replica_id);
4464 while let Some(location) = locations.next() {
4465 let buffer = location.buffer.read(cx);
4466 let mut ranges_for_buffer = Vec::new();
4467 let range = location.range.to_offset(buffer);
4468 ranges_for_buffer.push(range.clone());
4469 if symbol_name.is_none() {
4470 symbol_name = Some(buffer.text_for_range(range).collect::<String>());
4471 }
4472
4473 while let Some(next_location) = locations.peek() {
4474 if next_location.buffer == location.buffer {
4475 ranges_for_buffer.push(next_location.range.to_offset(buffer));
4476 locations.next();
4477 } else {
4478 break;
4479 }
4480 }
4481
4482 ranges_for_buffer.sort_by_key(|range| (range.start, Reverse(range.end)));
4483 ranges_to_highlight.extend(multibuffer.push_excerpts_with_context_lines(
4484 location.buffer.clone(),
4485 ranges_for_buffer,
4486 1,
4487 cx,
4488 ));
4489 }
4490 multibuffer.with_title(format!("References to `{}`", symbol_name.unwrap()))
4491 });
4492
4493 workspace.update(&mut cx, |workspace, cx| {
4494 let editor =
4495 cx.add_view(|cx| Editor::for_multibuffer(excerpt_buffer, Some(project), cx));
4496 editor.update(cx, |editor, cx| {
4497 let color = editor.style(cx).highlighted_line_background;
4498 editor.highlight_background::<Self>(ranges_to_highlight, color, cx);
4499 });
4500 workspace.add_item(Box::new(editor), cx);
4501 });
4502
4503 Ok(())
4504 }))
4505 }
4506
4507 pub fn rename(&mut self, _: &Rename, cx: &mut ViewContext<Self>) -> Option<Task<Result<()>>> {
4508 use language::ToOffset as _;
4509
4510 let project = self.project.clone()?;
4511 let selection = self.newest_anchor_selection().clone();
4512 let (cursor_buffer, cursor_buffer_position) = self
4513 .buffer
4514 .read(cx)
4515 .text_anchor_for_position(selection.head(), cx)?;
4516 let (tail_buffer, _) = self
4517 .buffer
4518 .read(cx)
4519 .text_anchor_for_position(selection.tail(), cx)?;
4520 if tail_buffer != cursor_buffer {
4521 return None;
4522 }
4523
4524 let snapshot = cursor_buffer.read(cx).snapshot();
4525 let cursor_buffer_offset = cursor_buffer_position.to_offset(&snapshot);
4526 let prepare_rename = project.update(cx, |project, cx| {
4527 project.prepare_rename(cursor_buffer, cursor_buffer_offset, cx)
4528 });
4529
4530 Some(cx.spawn(|this, mut cx| async move {
4531 if let Some(rename_range) = prepare_rename.await? {
4532 let rename_buffer_range = rename_range.to_offset(&snapshot);
4533 let cursor_offset_in_rename_range =
4534 cursor_buffer_offset.saturating_sub(rename_buffer_range.start);
4535
4536 this.update(&mut cx, |this, cx| {
4537 this.take_rename(false, cx);
4538 let style = this.style(cx);
4539 let buffer = this.buffer.read(cx).read(cx);
4540 let cursor_offset = selection.head().to_offset(&buffer);
4541 let rename_start = cursor_offset.saturating_sub(cursor_offset_in_rename_range);
4542 let rename_end = rename_start + rename_buffer_range.len();
4543 let range = buffer.anchor_before(rename_start)..buffer.anchor_after(rename_end);
4544 let mut old_highlight_id = None;
4545 let old_name = buffer
4546 .chunks(rename_start..rename_end, true)
4547 .map(|chunk| {
4548 if old_highlight_id.is_none() {
4549 old_highlight_id = chunk.syntax_highlight_id;
4550 }
4551 chunk.text
4552 })
4553 .collect();
4554
4555 drop(buffer);
4556
4557 // Position the selection in the rename editor so that it matches the current selection.
4558 this.show_local_selections = false;
4559 let rename_editor = cx.add_view(|cx| {
4560 let mut editor = Editor::single_line(None, cx);
4561 if let Some(old_highlight_id) = old_highlight_id {
4562 editor.override_text_style =
4563 Some(Box::new(move |style| old_highlight_id.style(&style.syntax)));
4564 }
4565 editor
4566 .buffer
4567 .update(cx, |buffer, cx| buffer.edit([0..0], &old_name, cx));
4568 editor.select_all(&SelectAll, cx);
4569 editor
4570 });
4571
4572 let ranges = this
4573 .clear_background_highlights::<DocumentHighlightWrite>(cx)
4574 .into_iter()
4575 .flat_map(|(_, ranges)| ranges)
4576 .chain(
4577 this.clear_background_highlights::<DocumentHighlightRead>(cx)
4578 .into_iter()
4579 .flat_map(|(_, ranges)| ranges),
4580 )
4581 .collect();
4582
4583 this.highlight_text::<Rename>(
4584 ranges,
4585 HighlightStyle {
4586 fade_out: Some(style.rename_fade),
4587 ..Default::default()
4588 },
4589 cx,
4590 );
4591 cx.focus(&rename_editor);
4592 let block_id = this.insert_blocks(
4593 [BlockProperties {
4594 position: range.start.clone(),
4595 height: 1,
4596 render: Arc::new({
4597 let editor = rename_editor.clone();
4598 move |cx: &BlockContext| {
4599 ChildView::new(editor.clone())
4600 .contained()
4601 .with_padding_left(cx.anchor_x)
4602 .boxed()
4603 }
4604 }),
4605 disposition: BlockDisposition::Below,
4606 }],
4607 cx,
4608 )[0];
4609 this.pending_rename = Some(RenameState {
4610 range,
4611 old_name,
4612 editor: rename_editor,
4613 block_id,
4614 });
4615 });
4616 }
4617
4618 Ok(())
4619 }))
4620 }
4621
4622 pub fn confirm_rename(
4623 workspace: &mut Workspace,
4624 _: &ConfirmRename,
4625 cx: &mut ViewContext<Workspace>,
4626 ) -> Option<Task<Result<()>>> {
4627 let editor = workspace.active_item(cx)?.act_as::<Editor>(cx)?;
4628
4629 let (buffer, range, old_name, new_name) = editor.update(cx, |editor, cx| {
4630 let rename = editor.take_rename(false, cx)?;
4631 let buffer = editor.buffer.read(cx);
4632 let (start_buffer, start) =
4633 buffer.text_anchor_for_position(rename.range.start.clone(), cx)?;
4634 let (end_buffer, end) =
4635 buffer.text_anchor_for_position(rename.range.end.clone(), cx)?;
4636 if start_buffer == end_buffer {
4637 let new_name = rename.editor.read(cx).text(cx);
4638 Some((start_buffer, start..end, rename.old_name, new_name))
4639 } else {
4640 None
4641 }
4642 })?;
4643
4644 let rename = workspace.project().clone().update(cx, |project, cx| {
4645 project.perform_rename(
4646 buffer.clone(),
4647 range.start.clone(),
4648 new_name.clone(),
4649 true,
4650 cx,
4651 )
4652 });
4653
4654 Some(cx.spawn(|workspace, mut cx| async move {
4655 let project_transaction = rename.await?;
4656 Self::open_project_transaction(
4657 editor.clone(),
4658 workspace,
4659 project_transaction,
4660 format!("Rename: {} → {}", old_name, new_name),
4661 cx.clone(),
4662 )
4663 .await?;
4664
4665 editor.update(&mut cx, |editor, cx| {
4666 editor.refresh_document_highlights(cx);
4667 });
4668 Ok(())
4669 }))
4670 }
4671
4672 fn take_rename(
4673 &mut self,
4674 moving_cursor: bool,
4675 cx: &mut ViewContext<Self>,
4676 ) -> Option<RenameState> {
4677 let rename = self.pending_rename.take()?;
4678 self.remove_blocks([rename.block_id].into_iter().collect(), cx);
4679 self.clear_text_highlights::<Rename>(cx);
4680 self.show_local_selections = true;
4681
4682 if moving_cursor {
4683 let cursor_in_rename_editor =
4684 rename.editor.read(cx).newest_selection::<usize>(cx).head();
4685
4686 // Update the selection to match the position of the selection inside
4687 // the rename editor.
4688 let snapshot = self.buffer.read(cx).read(cx);
4689 let rename_range = rename.range.to_offset(&snapshot);
4690 let cursor_in_editor = snapshot
4691 .clip_offset(rename_range.start + cursor_in_rename_editor, Bias::Left)
4692 .min(rename_range.end);
4693 drop(snapshot);
4694
4695 self.update_selections(
4696 vec![Selection {
4697 id: self.newest_anchor_selection().id,
4698 start: cursor_in_editor,
4699 end: cursor_in_editor,
4700 reversed: false,
4701 goal: SelectionGoal::None,
4702 }],
4703 None,
4704 cx,
4705 );
4706 }
4707
4708 Some(rename)
4709 }
4710
4711 fn invalidate_rename_range(
4712 &mut self,
4713 buffer: &MultiBufferSnapshot,
4714 cx: &mut ViewContext<Self>,
4715 ) {
4716 if let Some(rename) = self.pending_rename.as_ref() {
4717 if self.selections.len() == 1 {
4718 let head = self.selections[0].head().to_offset(buffer);
4719 let range = rename.range.to_offset(buffer).to_inclusive();
4720 if range.contains(&head) {
4721 return;
4722 }
4723 }
4724 let rename = self.pending_rename.take().unwrap();
4725 self.remove_blocks([rename.block_id].into_iter().collect(), cx);
4726 self.clear_background_highlights::<Rename>(cx);
4727 }
4728 }
4729
4730 #[cfg(any(test, feature = "test-support"))]
4731 pub fn pending_rename(&self) -> Option<&RenameState> {
4732 self.pending_rename.as_ref()
4733 }
4734
4735 fn refresh_active_diagnostics(&mut self, cx: &mut ViewContext<Editor>) {
4736 if let Some(active_diagnostics) = self.active_diagnostics.as_mut() {
4737 let buffer = self.buffer.read(cx).snapshot(cx);
4738 let primary_range_start = active_diagnostics.primary_range.start.to_offset(&buffer);
4739 let is_valid = buffer
4740 .diagnostics_in_range::<_, usize>(active_diagnostics.primary_range.clone(), false)
4741 .any(|entry| {
4742 entry.diagnostic.is_primary
4743 && !entry.range.is_empty()
4744 && entry.range.start == primary_range_start
4745 && entry.diagnostic.message == active_diagnostics.primary_message
4746 });
4747
4748 if is_valid != active_diagnostics.is_valid {
4749 active_diagnostics.is_valid = is_valid;
4750 let mut new_styles = HashMap::default();
4751 for (block_id, diagnostic) in &active_diagnostics.blocks {
4752 new_styles.insert(
4753 *block_id,
4754 diagnostic_block_renderer(diagnostic.clone(), is_valid),
4755 );
4756 }
4757 self.display_map
4758 .update(cx, |display_map, _| display_map.replace_blocks(new_styles));
4759 }
4760 }
4761 }
4762
4763 fn activate_diagnostics(&mut self, group_id: usize, cx: &mut ViewContext<Self>) {
4764 self.dismiss_diagnostics(cx);
4765 self.active_diagnostics = self.display_map.update(cx, |display_map, cx| {
4766 let buffer = self.buffer.read(cx).snapshot(cx);
4767
4768 let mut primary_range = None;
4769 let mut primary_message = None;
4770 let mut group_end = Point::zero();
4771 let diagnostic_group = buffer
4772 .diagnostic_group::<Point>(group_id)
4773 .map(|entry| {
4774 if entry.range.end > group_end {
4775 group_end = entry.range.end;
4776 }
4777 if entry.diagnostic.is_primary {
4778 primary_range = Some(entry.range.clone());
4779 primary_message = Some(entry.diagnostic.message.clone());
4780 }
4781 entry
4782 })
4783 .collect::<Vec<_>>();
4784 let primary_range = primary_range.unwrap();
4785 let primary_message = primary_message.unwrap();
4786 let primary_range =
4787 buffer.anchor_after(primary_range.start)..buffer.anchor_before(primary_range.end);
4788
4789 let blocks = display_map
4790 .insert_blocks(
4791 diagnostic_group.iter().map(|entry| {
4792 let diagnostic = entry.diagnostic.clone();
4793 let message_height = diagnostic.message.lines().count() as u8;
4794 BlockProperties {
4795 position: buffer.anchor_after(entry.range.start),
4796 height: message_height,
4797 render: diagnostic_block_renderer(diagnostic, true),
4798 disposition: BlockDisposition::Below,
4799 }
4800 }),
4801 cx,
4802 )
4803 .into_iter()
4804 .zip(diagnostic_group.into_iter().map(|entry| entry.diagnostic))
4805 .collect();
4806
4807 Some(ActiveDiagnosticGroup {
4808 primary_range,
4809 primary_message,
4810 blocks,
4811 is_valid: true,
4812 })
4813 });
4814 }
4815
4816 fn dismiss_diagnostics(&mut self, cx: &mut ViewContext<Self>) {
4817 if let Some(active_diagnostic_group) = self.active_diagnostics.take() {
4818 self.display_map.update(cx, |display_map, cx| {
4819 display_map.remove_blocks(active_diagnostic_group.blocks.into_keys().collect(), cx);
4820 });
4821 cx.notify();
4822 }
4823 }
4824
4825 fn build_columnar_selection(
4826 &mut self,
4827 display_map: &DisplaySnapshot,
4828 row: u32,
4829 columns: &Range<u32>,
4830 reversed: bool,
4831 ) -> Option<Selection<Point>> {
4832 let is_empty = columns.start == columns.end;
4833 let line_len = display_map.line_len(row);
4834 if columns.start < line_len || (is_empty && columns.start == line_len) {
4835 let start = DisplayPoint::new(row, columns.start);
4836 let end = DisplayPoint::new(row, cmp::min(columns.end, line_len));
4837 Some(Selection {
4838 id: post_inc(&mut self.next_selection_id),
4839 start: start.to_point(display_map),
4840 end: end.to_point(display_map),
4841 reversed,
4842 goal: SelectionGoal::ColumnRange {
4843 start: columns.start,
4844 end: columns.end,
4845 },
4846 })
4847 } else {
4848 None
4849 }
4850 }
4851
4852 pub fn local_selections_in_range(
4853 &self,
4854 range: Range<Anchor>,
4855 display_map: &DisplaySnapshot,
4856 ) -> Vec<Selection<Point>> {
4857 let buffer = &display_map.buffer_snapshot;
4858
4859 let start_ix = match self
4860 .selections
4861 .binary_search_by(|probe| probe.end.cmp(&range.start, &buffer))
4862 {
4863 Ok(ix) | Err(ix) => ix,
4864 };
4865 let end_ix = match self
4866 .selections
4867 .binary_search_by(|probe| probe.start.cmp(&range.end, &buffer))
4868 {
4869 Ok(ix) => ix + 1,
4870 Err(ix) => ix,
4871 };
4872
4873 fn point_selection(
4874 selection: &Selection<Anchor>,
4875 buffer: &MultiBufferSnapshot,
4876 ) -> Selection<Point> {
4877 let start = selection.start.to_point(&buffer);
4878 let end = selection.end.to_point(&buffer);
4879 Selection {
4880 id: selection.id,
4881 start,
4882 end,
4883 reversed: selection.reversed,
4884 goal: selection.goal,
4885 }
4886 }
4887
4888 self.selections[start_ix..end_ix]
4889 .iter()
4890 .chain(
4891 self.pending_selection
4892 .as_ref()
4893 .map(|pending| &pending.selection),
4894 )
4895 .map(|s| point_selection(s, &buffer))
4896 .collect()
4897 }
4898
4899 pub fn local_selections<'a, D>(&self, cx: &'a AppContext) -> Vec<Selection<D>>
4900 where
4901 D: 'a + TextDimension + Ord + Sub<D, Output = D>,
4902 {
4903 let buffer = self.buffer.read(cx).snapshot(cx);
4904 let mut selections = self
4905 .resolve_selections::<D, _>(self.selections.iter(), &buffer)
4906 .peekable();
4907
4908 let mut pending_selection = self.pending_selection::<D>(&buffer);
4909
4910 iter::from_fn(move || {
4911 if let Some(pending) = pending_selection.as_mut() {
4912 while let Some(next_selection) = selections.peek() {
4913 if pending.start <= next_selection.end && pending.end >= next_selection.start {
4914 let next_selection = selections.next().unwrap();
4915 if next_selection.start < pending.start {
4916 pending.start = next_selection.start;
4917 }
4918 if next_selection.end > pending.end {
4919 pending.end = next_selection.end;
4920 }
4921 } else if next_selection.end < pending.start {
4922 return selections.next();
4923 } else {
4924 break;
4925 }
4926 }
4927
4928 pending_selection.take()
4929 } else {
4930 selections.next()
4931 }
4932 })
4933 .collect()
4934 }
4935
4936 fn resolve_selections<'a, D, I>(
4937 &self,
4938 selections: I,
4939 snapshot: &MultiBufferSnapshot,
4940 ) -> impl 'a + Iterator<Item = Selection<D>>
4941 where
4942 D: TextDimension + Ord + Sub<D, Output = D>,
4943 I: 'a + IntoIterator<Item = &'a Selection<Anchor>>,
4944 {
4945 let (to_summarize, selections) = selections.into_iter().tee();
4946 let mut summaries = snapshot
4947 .summaries_for_anchors::<D, _>(to_summarize.flat_map(|s| [&s.start, &s.end]))
4948 .into_iter();
4949 selections.map(move |s| Selection {
4950 id: s.id,
4951 start: summaries.next().unwrap(),
4952 end: summaries.next().unwrap(),
4953 reversed: s.reversed,
4954 goal: s.goal,
4955 })
4956 }
4957
4958 fn pending_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
4959 &self,
4960 snapshot: &MultiBufferSnapshot,
4961 ) -> Option<Selection<D>> {
4962 self.pending_selection
4963 .as_ref()
4964 .map(|pending| self.resolve_selection(&pending.selection, &snapshot))
4965 }
4966
4967 fn resolve_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
4968 &self,
4969 selection: &Selection<Anchor>,
4970 buffer: &MultiBufferSnapshot,
4971 ) -> Selection<D> {
4972 Selection {
4973 id: selection.id,
4974 start: selection.start.summary::<D>(&buffer),
4975 end: selection.end.summary::<D>(&buffer),
4976 reversed: selection.reversed,
4977 goal: selection.goal,
4978 }
4979 }
4980
4981 fn selection_count<'a>(&self) -> usize {
4982 let mut count = self.selections.len();
4983 if self.pending_selection.is_some() {
4984 count += 1;
4985 }
4986 count
4987 }
4988
4989 pub fn oldest_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
4990 &self,
4991 cx: &AppContext,
4992 ) -> Selection<D> {
4993 let snapshot = self.buffer.read(cx).read(cx);
4994 self.selections
4995 .iter()
4996 .min_by_key(|s| s.id)
4997 .map(|selection| self.resolve_selection(selection, &snapshot))
4998 .or_else(|| self.pending_selection(&snapshot))
4999 .unwrap()
5000 }
5001
5002 pub fn newest_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
5003 &self,
5004 cx: &AppContext,
5005 ) -> Selection<D> {
5006 self.resolve_selection(
5007 self.newest_anchor_selection(),
5008 &self.buffer.read(cx).read(cx),
5009 )
5010 }
5011
5012 pub fn newest_selection_with_snapshot<D: TextDimension + Ord + Sub<D, Output = D>>(
5013 &self,
5014 snapshot: &MultiBufferSnapshot,
5015 ) -> Selection<D> {
5016 self.resolve_selection(self.newest_anchor_selection(), snapshot)
5017 }
5018
5019 pub fn newest_anchor_selection(&self) -> &Selection<Anchor> {
5020 self.pending_selection
5021 .as_ref()
5022 .map(|s| &s.selection)
5023 .or_else(|| self.selections.iter().max_by_key(|s| s.id))
5024 .unwrap()
5025 }
5026
5027 pub fn update_selections<T>(
5028 &mut self,
5029 mut selections: Vec<Selection<T>>,
5030 autoscroll: Option<Autoscroll>,
5031 cx: &mut ViewContext<Self>,
5032 ) where
5033 T: ToOffset + ToPoint + Ord + std::marker::Copy + std::fmt::Debug,
5034 {
5035 let buffer = self.buffer.read(cx).snapshot(cx);
5036 selections.sort_unstable_by_key(|s| s.start);
5037
5038 // Merge overlapping selections.
5039 let mut i = 1;
5040 while i < selections.len() {
5041 if selections[i - 1].end >= selections[i].start {
5042 let removed = selections.remove(i);
5043 if removed.start < selections[i - 1].start {
5044 selections[i - 1].start = removed.start;
5045 }
5046 if removed.end > selections[i - 1].end {
5047 selections[i - 1].end = removed.end;
5048 }
5049 } else {
5050 i += 1;
5051 }
5052 }
5053
5054 if let Some(autoscroll) = autoscroll {
5055 self.request_autoscroll(autoscroll, cx);
5056 }
5057
5058 self.set_selections(
5059 Arc::from_iter(selections.into_iter().map(|selection| {
5060 let end_bias = if selection.end > selection.start {
5061 Bias::Left
5062 } else {
5063 Bias::Right
5064 };
5065 Selection {
5066 id: selection.id,
5067 start: buffer.anchor_after(selection.start),
5068 end: buffer.anchor_at(selection.end, end_bias),
5069 reversed: selection.reversed,
5070 goal: selection.goal,
5071 }
5072 })),
5073 None,
5074 true,
5075 cx,
5076 );
5077 }
5078
5079 pub fn set_selections_from_remote(
5080 &mut self,
5081 mut selections: Vec<Selection<Anchor>>,
5082 cx: &mut ViewContext<Self>,
5083 ) {
5084 let buffer = self.buffer.read(cx);
5085 let buffer = buffer.read(cx);
5086 selections.sort_by(|a, b| {
5087 a.start
5088 .cmp(&b.start, &*buffer)
5089 .then_with(|| b.end.cmp(&a.end, &*buffer))
5090 });
5091
5092 // Merge overlapping selections
5093 let mut i = 1;
5094 while i < selections.len() {
5095 if selections[i - 1]
5096 .end
5097 .cmp(&selections[i].start, &*buffer)
5098 .is_ge()
5099 {
5100 let removed = selections.remove(i);
5101 if removed
5102 .start
5103 .cmp(&selections[i - 1].start, &*buffer)
5104 .is_lt()
5105 {
5106 selections[i - 1].start = removed.start;
5107 }
5108 if removed.end.cmp(&selections[i - 1].end, &*buffer).is_gt() {
5109 selections[i - 1].end = removed.end;
5110 }
5111 } else {
5112 i += 1;
5113 }
5114 }
5115
5116 drop(buffer);
5117 self.set_selections(selections.into(), None, false, cx);
5118 }
5119
5120 /// Compute new ranges for any selections that were located in excerpts that have
5121 /// since been removed.
5122 ///
5123 /// Returns a `HashMap` indicating which selections whose former head position
5124 /// was no longer present. The keys of the map are selection ids. The values are
5125 /// the id of the new excerpt where the head of the selection has been moved.
5126 pub fn refresh_selections(&mut self, cx: &mut ViewContext<Self>) -> HashMap<usize, ExcerptId> {
5127 let snapshot = self.buffer.read(cx).read(cx);
5128 let mut selections_with_lost_position = HashMap::default();
5129
5130 let mut pending_selection = self.pending_selection.take();
5131 if let Some(pending) = pending_selection.as_mut() {
5132 let anchors =
5133 snapshot.refresh_anchors([&pending.selection.start, &pending.selection.end]);
5134 let (_, start, kept_start) = anchors[0].clone();
5135 let (_, end, kept_end) = anchors[1].clone();
5136 let kept_head = if pending.selection.reversed {
5137 kept_start
5138 } else {
5139 kept_end
5140 };
5141 if !kept_head {
5142 selections_with_lost_position.insert(
5143 pending.selection.id,
5144 pending.selection.head().excerpt_id.clone(),
5145 );
5146 }
5147
5148 pending.selection.start = start;
5149 pending.selection.end = end;
5150 }
5151
5152 let anchors_with_status = snapshot.refresh_anchors(
5153 self.selections
5154 .iter()
5155 .flat_map(|selection| [&selection.start, &selection.end]),
5156 );
5157 self.selections = anchors_with_status
5158 .chunks(2)
5159 .map(|selection_anchors| {
5160 let (anchor_ix, start, kept_start) = selection_anchors[0].clone();
5161 let (_, end, kept_end) = selection_anchors[1].clone();
5162 let selection = &self.selections[anchor_ix / 2];
5163 let kept_head = if selection.reversed {
5164 kept_start
5165 } else {
5166 kept_end
5167 };
5168 if !kept_head {
5169 selections_with_lost_position
5170 .insert(selection.id, selection.head().excerpt_id.clone());
5171 }
5172
5173 Selection {
5174 id: selection.id,
5175 start,
5176 end,
5177 reversed: selection.reversed,
5178 goal: selection.goal,
5179 }
5180 })
5181 .collect();
5182 drop(snapshot);
5183
5184 let new_selections = self.local_selections::<usize>(cx);
5185 if !new_selections.is_empty() {
5186 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
5187 }
5188 self.pending_selection = pending_selection;
5189
5190 selections_with_lost_position
5191 }
5192
5193 fn set_selections(
5194 &mut self,
5195 selections: Arc<[Selection<Anchor>]>,
5196 pending_selection: Option<PendingSelection>,
5197 local: bool,
5198 cx: &mut ViewContext<Self>,
5199 ) {
5200 assert!(
5201 !selections.is_empty() || pending_selection.is_some(),
5202 "must have at least one selection"
5203 );
5204
5205 let old_cursor_position = self.newest_anchor_selection().head();
5206
5207 self.selections = selections;
5208 self.pending_selection = pending_selection;
5209 if self.focused && self.leader_replica_id.is_none() {
5210 self.buffer.update(cx, |buffer, cx| {
5211 buffer.set_active_selections(&self.selections, cx)
5212 });
5213 }
5214
5215 let display_map = self
5216 .display_map
5217 .update(cx, |display_map, cx| display_map.snapshot(cx));
5218 let buffer = &display_map.buffer_snapshot;
5219 self.add_selections_state = None;
5220 self.select_next_state = None;
5221 self.select_larger_syntax_node_stack.clear();
5222 self.autoclose_stack.invalidate(&self.selections, &buffer);
5223 self.snippet_stack.invalidate(&self.selections, &buffer);
5224 self.invalidate_rename_range(&buffer, cx);
5225
5226 let new_cursor_position = self.newest_anchor_selection().head();
5227
5228 self.push_to_nav_history(
5229 old_cursor_position.clone(),
5230 Some(new_cursor_position.to_point(&buffer)),
5231 cx,
5232 );
5233
5234 if local {
5235 let completion_menu = match self.context_menu.as_mut() {
5236 Some(ContextMenu::Completions(menu)) => Some(menu),
5237 _ => {
5238 self.context_menu.take();
5239 None
5240 }
5241 };
5242
5243 if let Some(completion_menu) = completion_menu {
5244 let cursor_position = new_cursor_position.to_offset(&buffer);
5245 let (word_range, kind) =
5246 buffer.surrounding_word(completion_menu.initial_position.clone());
5247 if kind == Some(CharKind::Word)
5248 && word_range.to_inclusive().contains(&cursor_position)
5249 {
5250 let query = Self::completion_query(&buffer, cursor_position);
5251 cx.background()
5252 .block(completion_menu.filter(query.as_deref(), cx.background().clone()));
5253 self.show_completions(&ShowCompletions, cx);
5254 } else {
5255 self.hide_context_menu(cx);
5256 }
5257 }
5258
5259 if old_cursor_position.to_display_point(&display_map).row()
5260 != new_cursor_position.to_display_point(&display_map).row()
5261 {
5262 self.available_code_actions.take();
5263 }
5264 self.refresh_code_actions(cx);
5265 self.refresh_document_highlights(cx);
5266 }
5267
5268 self.pause_cursor_blinking(cx);
5269 cx.emit(Event::SelectionsChanged { local });
5270 }
5271
5272 pub fn request_autoscroll(&mut self, autoscroll: Autoscroll, cx: &mut ViewContext<Self>) {
5273 self.autoscroll_request = Some((autoscroll, true));
5274 cx.notify();
5275 }
5276
5277 fn request_autoscroll_remotely(&mut self, autoscroll: Autoscroll, cx: &mut ViewContext<Self>) {
5278 self.autoscroll_request = Some((autoscroll, false));
5279 cx.notify();
5280 }
5281
5282 pub fn transact(
5283 &mut self,
5284 cx: &mut ViewContext<Self>,
5285 update: impl FnOnce(&mut Self, &mut ViewContext<Self>),
5286 ) {
5287 self.start_transaction_at(Instant::now(), cx);
5288 update(self, cx);
5289 self.end_transaction_at(Instant::now(), cx);
5290 }
5291
5292 fn start_transaction_at(&mut self, now: Instant, cx: &mut ViewContext<Self>) {
5293 self.end_selection(cx);
5294 if let Some(tx_id) = self
5295 .buffer
5296 .update(cx, |buffer, cx| buffer.start_transaction_at(now, cx))
5297 {
5298 self.selection_history
5299 .insert(tx_id, (self.selections.clone(), None));
5300 }
5301 }
5302
5303 fn end_transaction_at(&mut self, now: Instant, cx: &mut ViewContext<Self>) {
5304 if let Some(tx_id) = self
5305 .buffer
5306 .update(cx, |buffer, cx| buffer.end_transaction_at(now, cx))
5307 {
5308 if let Some((_, end_selections)) = self.selection_history.get_mut(&tx_id) {
5309 *end_selections = Some(self.selections.clone());
5310 } else {
5311 log::error!("unexpectedly ended a transaction that wasn't started by this editor");
5312 }
5313
5314 cx.emit(Event::Edited);
5315 }
5316 }
5317
5318 pub fn page_up(&mut self, _: &PageUp, _: &mut ViewContext<Self>) {
5319 log::info!("Editor::page_up");
5320 }
5321
5322 pub fn page_down(&mut self, _: &PageDown, _: &mut ViewContext<Self>) {
5323 log::info!("Editor::page_down");
5324 }
5325
5326 pub fn fold(&mut self, _: &Fold, cx: &mut ViewContext<Self>) {
5327 let mut fold_ranges = Vec::new();
5328
5329 let selections = self.local_selections::<Point>(cx);
5330 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
5331 for selection in selections {
5332 let range = selection.display_range(&display_map).sorted();
5333 let buffer_start_row = range.start.to_point(&display_map).row;
5334
5335 for row in (0..=range.end.row()).rev() {
5336 if self.is_line_foldable(&display_map, row) && !display_map.is_line_folded(row) {
5337 let fold_range = self.foldable_range_for_line(&display_map, row);
5338 if fold_range.end.row >= buffer_start_row {
5339 fold_ranges.push(fold_range);
5340 if row <= range.start.row() {
5341 break;
5342 }
5343 }
5344 }
5345 }
5346 }
5347
5348 self.fold_ranges(fold_ranges, cx);
5349 }
5350
5351 pub fn unfold_lines(&mut self, _: &UnfoldLines, cx: &mut ViewContext<Self>) {
5352 let selections = self.local_selections::<Point>(cx);
5353 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
5354 let buffer = &display_map.buffer_snapshot;
5355 let ranges = selections
5356 .iter()
5357 .map(|s| {
5358 let range = s.display_range(&display_map).sorted();
5359 let mut start = range.start.to_point(&display_map);
5360 let mut end = range.end.to_point(&display_map);
5361 start.column = 0;
5362 end.column = buffer.line_len(end.row);
5363 start..end
5364 })
5365 .collect::<Vec<_>>();
5366 self.unfold_ranges(ranges, true, cx);
5367 }
5368
5369 fn is_line_foldable(&self, display_map: &DisplaySnapshot, display_row: u32) -> bool {
5370 let max_point = display_map.max_point();
5371 if display_row >= max_point.row() {
5372 false
5373 } else {
5374 let (start_indent, is_blank) = display_map.line_indent(display_row);
5375 if is_blank {
5376 false
5377 } else {
5378 for display_row in display_row + 1..=max_point.row() {
5379 let (indent, is_blank) = display_map.line_indent(display_row);
5380 if !is_blank {
5381 return indent > start_indent;
5382 }
5383 }
5384 false
5385 }
5386 }
5387 }
5388
5389 fn foldable_range_for_line(
5390 &self,
5391 display_map: &DisplaySnapshot,
5392 start_row: u32,
5393 ) -> Range<Point> {
5394 let max_point = display_map.max_point();
5395
5396 let (start_indent, _) = display_map.line_indent(start_row);
5397 let start = DisplayPoint::new(start_row, display_map.line_len(start_row));
5398 let mut end = None;
5399 for row in start_row + 1..=max_point.row() {
5400 let (indent, is_blank) = display_map.line_indent(row);
5401 if !is_blank && indent <= start_indent {
5402 end = Some(DisplayPoint::new(row - 1, display_map.line_len(row - 1)));
5403 break;
5404 }
5405 }
5406
5407 let end = end.unwrap_or(max_point);
5408 return start.to_point(display_map)..end.to_point(display_map);
5409 }
5410
5411 pub fn fold_selected_ranges(&mut self, _: &FoldSelectedRanges, cx: &mut ViewContext<Self>) {
5412 let selections = self.local_selections::<Point>(cx);
5413 let ranges = selections.into_iter().map(|s| s.start..s.end);
5414 self.fold_ranges(ranges, cx);
5415 }
5416
5417 pub fn fold_ranges<T: ToOffset>(
5418 &mut self,
5419 ranges: impl IntoIterator<Item = Range<T>>,
5420 cx: &mut ViewContext<Self>,
5421 ) {
5422 let mut ranges = ranges.into_iter().peekable();
5423 if ranges.peek().is_some() {
5424 self.display_map.update(cx, |map, cx| map.fold(ranges, cx));
5425 self.request_autoscroll(Autoscroll::Fit, cx);
5426 cx.notify();
5427 }
5428 }
5429
5430 pub fn unfold_ranges<T: ToOffset>(
5431 &mut self,
5432 ranges: impl IntoIterator<Item = Range<T>>,
5433 inclusive: bool,
5434 cx: &mut ViewContext<Self>,
5435 ) {
5436 let mut ranges = ranges.into_iter().peekable();
5437 if ranges.peek().is_some() {
5438 self.display_map
5439 .update(cx, |map, cx| map.unfold(ranges, inclusive, cx));
5440 self.request_autoscroll(Autoscroll::Fit, cx);
5441 cx.notify();
5442 }
5443 }
5444
5445 pub fn insert_blocks(
5446 &mut self,
5447 blocks: impl IntoIterator<Item = BlockProperties<Anchor>>,
5448 cx: &mut ViewContext<Self>,
5449 ) -> Vec<BlockId> {
5450 let blocks = self
5451 .display_map
5452 .update(cx, |display_map, cx| display_map.insert_blocks(blocks, cx));
5453 self.request_autoscroll(Autoscroll::Fit, cx);
5454 blocks
5455 }
5456
5457 pub fn replace_blocks(
5458 &mut self,
5459 blocks: HashMap<BlockId, RenderBlock>,
5460 cx: &mut ViewContext<Self>,
5461 ) {
5462 self.display_map
5463 .update(cx, |display_map, _| display_map.replace_blocks(blocks));
5464 self.request_autoscroll(Autoscroll::Fit, cx);
5465 }
5466
5467 pub fn remove_blocks(&mut self, block_ids: HashSet<BlockId>, cx: &mut ViewContext<Self>) {
5468 self.display_map.update(cx, |display_map, cx| {
5469 display_map.remove_blocks(block_ids, cx)
5470 });
5471 }
5472
5473 pub fn longest_row(&self, cx: &mut MutableAppContext) -> u32 {
5474 self.display_map
5475 .update(cx, |map, cx| map.snapshot(cx))
5476 .longest_row()
5477 }
5478
5479 pub fn max_point(&self, cx: &mut MutableAppContext) -> DisplayPoint {
5480 self.display_map
5481 .update(cx, |map, cx| map.snapshot(cx))
5482 .max_point()
5483 }
5484
5485 pub fn text(&self, cx: &AppContext) -> String {
5486 self.buffer.read(cx).read(cx).text()
5487 }
5488
5489 pub fn set_text(&mut self, text: impl Into<String>, cx: &mut ViewContext<Self>) {
5490 self.transact(cx, |this, cx| {
5491 this.buffer
5492 .read(cx)
5493 .as_singleton()
5494 .expect("you can only call set_text on editors for singleton buffers")
5495 .update(cx, |buffer, cx| buffer.set_text(text, cx));
5496 });
5497 }
5498
5499 pub fn display_text(&self, cx: &mut MutableAppContext) -> String {
5500 self.display_map
5501 .update(cx, |map, cx| map.snapshot(cx))
5502 .text()
5503 }
5504
5505 pub fn soft_wrap_mode(&self, cx: &AppContext) -> SoftWrap {
5506 let language = self.language(cx);
5507 let settings = cx.global::<Settings>();
5508 let mode = self
5509 .soft_wrap_mode_override
5510 .unwrap_or_else(|| settings.soft_wrap(language));
5511 match mode {
5512 settings::SoftWrap::None => SoftWrap::None,
5513 settings::SoftWrap::EditorWidth => SoftWrap::EditorWidth,
5514 settings::SoftWrap::PreferredLineLength => {
5515 SoftWrap::Column(settings.preferred_line_length(language))
5516 }
5517 }
5518 }
5519
5520 pub fn set_soft_wrap_mode(&mut self, mode: settings::SoftWrap, cx: &mut ViewContext<Self>) {
5521 self.soft_wrap_mode_override = Some(mode);
5522 cx.notify();
5523 }
5524
5525 pub fn set_wrap_width(&self, width: Option<f32>, cx: &mut MutableAppContext) -> bool {
5526 self.display_map
5527 .update(cx, |map, cx| map.set_wrap_width(width, cx))
5528 }
5529
5530 pub fn highlight_rows(&mut self, rows: Option<Range<u32>>) {
5531 self.highlighted_rows = rows;
5532 }
5533
5534 pub fn highlighted_rows(&self) -> Option<Range<u32>> {
5535 self.highlighted_rows.clone()
5536 }
5537
5538 pub fn highlight_background<T: 'static>(
5539 &mut self,
5540 ranges: Vec<Range<Anchor>>,
5541 color: Color,
5542 cx: &mut ViewContext<Self>,
5543 ) {
5544 self.background_highlights
5545 .insert(TypeId::of::<T>(), (color, ranges));
5546 cx.notify();
5547 }
5548
5549 pub fn clear_background_highlights<T: 'static>(
5550 &mut self,
5551 cx: &mut ViewContext<Self>,
5552 ) -> Option<(Color, Vec<Range<Anchor>>)> {
5553 cx.notify();
5554 self.background_highlights.remove(&TypeId::of::<T>())
5555 }
5556
5557 #[cfg(feature = "test-support")]
5558 pub fn all_background_highlights(
5559 &mut self,
5560 cx: &mut ViewContext<Self>,
5561 ) -> Vec<(Range<DisplayPoint>, Color)> {
5562 let snapshot = self.snapshot(cx);
5563 let buffer = &snapshot.buffer_snapshot;
5564 let start = buffer.anchor_before(0);
5565 let end = buffer.anchor_after(buffer.len());
5566 self.background_highlights_in_range(start..end, &snapshot)
5567 }
5568
5569 pub fn background_highlights_for_type<T: 'static>(&self) -> Option<(Color, &[Range<Anchor>])> {
5570 self.background_highlights
5571 .get(&TypeId::of::<T>())
5572 .map(|(color, ranges)| (*color, ranges.as_slice()))
5573 }
5574
5575 pub fn background_highlights_in_range(
5576 &self,
5577 search_range: Range<Anchor>,
5578 display_snapshot: &DisplaySnapshot,
5579 ) -> Vec<(Range<DisplayPoint>, Color)> {
5580 let mut results = Vec::new();
5581 let buffer = &display_snapshot.buffer_snapshot;
5582 for (color, ranges) in self.background_highlights.values() {
5583 let start_ix = match ranges.binary_search_by(|probe| {
5584 let cmp = probe.end.cmp(&search_range.start, &buffer);
5585 if cmp.is_gt() {
5586 Ordering::Greater
5587 } else {
5588 Ordering::Less
5589 }
5590 }) {
5591 Ok(i) | Err(i) => i,
5592 };
5593 for range in &ranges[start_ix..] {
5594 if range.start.cmp(&search_range.end, &buffer).is_ge() {
5595 break;
5596 }
5597 let start = range
5598 .start
5599 .to_point(buffer)
5600 .to_display_point(display_snapshot);
5601 let end = range
5602 .end
5603 .to_point(buffer)
5604 .to_display_point(display_snapshot);
5605 results.push((start..end, *color))
5606 }
5607 }
5608 results
5609 }
5610
5611 pub fn highlight_text<T: 'static>(
5612 &mut self,
5613 ranges: Vec<Range<Anchor>>,
5614 style: HighlightStyle,
5615 cx: &mut ViewContext<Self>,
5616 ) {
5617 self.display_map.update(cx, |map, _| {
5618 map.highlight_text(TypeId::of::<T>(), ranges, style)
5619 });
5620 cx.notify();
5621 }
5622
5623 pub fn clear_text_highlights<T: 'static>(
5624 &mut self,
5625 cx: &mut ViewContext<Self>,
5626 ) -> Option<Arc<(HighlightStyle, Vec<Range<Anchor>>)>> {
5627 cx.notify();
5628 self.display_map
5629 .update(cx, |map, _| map.clear_text_highlights(TypeId::of::<T>()))
5630 }
5631
5632 fn next_blink_epoch(&mut self) -> usize {
5633 self.blink_epoch += 1;
5634 self.blink_epoch
5635 }
5636
5637 fn pause_cursor_blinking(&mut self, cx: &mut ViewContext<Self>) {
5638 if !self.focused {
5639 return;
5640 }
5641
5642 self.show_local_cursors = true;
5643 cx.notify();
5644
5645 let epoch = self.next_blink_epoch();
5646 cx.spawn(|this, mut cx| {
5647 let this = this.downgrade();
5648 async move {
5649 Timer::after(CURSOR_BLINK_INTERVAL).await;
5650 if let Some(this) = this.upgrade(&cx) {
5651 this.update(&mut cx, |this, cx| this.resume_cursor_blinking(epoch, cx))
5652 }
5653 }
5654 })
5655 .detach();
5656 }
5657
5658 fn resume_cursor_blinking(&mut self, epoch: usize, cx: &mut ViewContext<Self>) {
5659 if epoch == self.blink_epoch {
5660 self.blinking_paused = false;
5661 self.blink_cursors(epoch, cx);
5662 }
5663 }
5664
5665 fn blink_cursors(&mut self, epoch: usize, cx: &mut ViewContext<Self>) {
5666 if epoch == self.blink_epoch && self.focused && !self.blinking_paused {
5667 self.show_local_cursors = !self.show_local_cursors;
5668 cx.notify();
5669
5670 let epoch = self.next_blink_epoch();
5671 cx.spawn(|this, mut cx| {
5672 let this = this.downgrade();
5673 async move {
5674 Timer::after(CURSOR_BLINK_INTERVAL).await;
5675 if let Some(this) = this.upgrade(&cx) {
5676 this.update(&mut cx, |this, cx| this.blink_cursors(epoch, cx));
5677 }
5678 }
5679 })
5680 .detach();
5681 }
5682 }
5683
5684 pub fn show_local_cursors(&self) -> bool {
5685 self.show_local_cursors && self.focused
5686 }
5687
5688 fn on_buffer_changed(&mut self, _: ModelHandle<MultiBuffer>, cx: &mut ViewContext<Self>) {
5689 cx.notify();
5690 }
5691
5692 fn on_buffer_event(
5693 &mut self,
5694 _: ModelHandle<MultiBuffer>,
5695 event: &language::Event,
5696 cx: &mut ViewContext<Self>,
5697 ) {
5698 match event {
5699 language::Event::Edited => {
5700 self.refresh_active_diagnostics(cx);
5701 self.refresh_code_actions(cx);
5702 cx.emit(Event::BufferEdited);
5703 }
5704 language::Event::Dirtied => cx.emit(Event::Dirtied),
5705 language::Event::Saved => cx.emit(Event::Saved),
5706 language::Event::FileHandleChanged => cx.emit(Event::TitleChanged),
5707 language::Event::Reloaded => cx.emit(Event::TitleChanged),
5708 language::Event::Closed => cx.emit(Event::Closed),
5709 language::Event::DiagnosticsUpdated => {
5710 self.refresh_active_diagnostics(cx);
5711 }
5712 _ => {}
5713 }
5714 }
5715
5716 fn on_display_map_changed(&mut self, _: ModelHandle<DisplayMap>, cx: &mut ViewContext<Self>) {
5717 cx.notify();
5718 }
5719
5720 pub fn set_searchable(&mut self, searchable: bool) {
5721 self.searchable = searchable;
5722 }
5723
5724 pub fn searchable(&self) -> bool {
5725 self.searchable
5726 }
5727
5728 fn open_excerpts(workspace: &mut Workspace, _: &OpenExcerpts, cx: &mut ViewContext<Workspace>) {
5729 let active_item = workspace.active_item(cx);
5730 let editor_handle = if let Some(editor) = active_item
5731 .as_ref()
5732 .and_then(|item| item.act_as::<Self>(cx))
5733 {
5734 editor
5735 } else {
5736 cx.propagate_action();
5737 return;
5738 };
5739
5740 let editor = editor_handle.read(cx);
5741 let buffer = editor.buffer.read(cx);
5742 if buffer.is_singleton() {
5743 cx.propagate_action();
5744 return;
5745 }
5746
5747 let mut new_selections_by_buffer = HashMap::default();
5748 for selection in editor.local_selections::<usize>(cx) {
5749 for (buffer, mut range) in
5750 buffer.range_to_buffer_ranges(selection.start..selection.end, cx)
5751 {
5752 if selection.reversed {
5753 mem::swap(&mut range.start, &mut range.end);
5754 }
5755 new_selections_by_buffer
5756 .entry(buffer)
5757 .or_insert(Vec::new())
5758 .push(range)
5759 }
5760 }
5761
5762 editor_handle.update(cx, |editor, cx| {
5763 editor.push_to_nav_history(editor.newest_anchor_selection().head(), None, cx);
5764 });
5765 let nav_history = workspace.active_pane().read(cx).nav_history().clone();
5766 nav_history.borrow_mut().disable();
5767
5768 // We defer the pane interaction because we ourselves are a workspace item
5769 // and activating a new item causes the pane to call a method on us reentrantly,
5770 // which panics if we're on the stack.
5771 cx.defer(move |workspace, cx| {
5772 workspace.activate_next_pane(cx);
5773
5774 for (buffer, ranges) in new_selections_by_buffer.into_iter() {
5775 let editor = workspace.open_project_item::<Self>(buffer, cx);
5776 editor.update(cx, |editor, cx| {
5777 editor.select_ranges(ranges, Some(Autoscroll::Newest), cx);
5778 });
5779 }
5780
5781 nav_history.borrow_mut().enable();
5782 });
5783 }
5784}
5785
5786impl EditorSnapshot {
5787 pub fn is_focused(&self) -> bool {
5788 self.is_focused
5789 }
5790
5791 pub fn placeholder_text(&self) -> Option<&Arc<str>> {
5792 self.placeholder_text.as_ref()
5793 }
5794
5795 pub fn scroll_position(&self) -> Vector2F {
5796 compute_scroll_position(
5797 &self.display_snapshot,
5798 self.scroll_position,
5799 &self.scroll_top_anchor,
5800 )
5801 }
5802}
5803
5804impl Deref for EditorSnapshot {
5805 type Target = DisplaySnapshot;
5806
5807 fn deref(&self) -> &Self::Target {
5808 &self.display_snapshot
5809 }
5810}
5811
5812fn compute_scroll_position(
5813 snapshot: &DisplaySnapshot,
5814 mut scroll_position: Vector2F,
5815 scroll_top_anchor: &Anchor,
5816) -> Vector2F {
5817 if *scroll_top_anchor != Anchor::min() {
5818 let scroll_top = scroll_top_anchor.to_display_point(snapshot).row() as f32;
5819 scroll_position.set_y(scroll_top + scroll_position.y());
5820 } else {
5821 scroll_position.set_y(0.);
5822 }
5823 scroll_position
5824}
5825
5826#[derive(Copy, Clone, Debug, PartialEq, Eq)]
5827pub enum Event {
5828 Activate,
5829 BufferEdited,
5830 Edited,
5831 Blurred,
5832 Dirtied,
5833 Saved,
5834 TitleChanged,
5835 SelectionsChanged { local: bool },
5836 ScrollPositionChanged { local: bool },
5837 Closed,
5838}
5839
5840pub struct EditorFocused(pub ViewHandle<Editor>);
5841pub struct EditorBlurred(pub ViewHandle<Editor>);
5842pub struct EditorReleased(pub WeakViewHandle<Editor>);
5843
5844impl Entity for Editor {
5845 type Event = Event;
5846
5847 fn release(&mut self, cx: &mut MutableAppContext) {
5848 cx.emit_global(EditorReleased(self.handle.clone()));
5849 }
5850}
5851
5852impl View for Editor {
5853 fn render(&mut self, cx: &mut RenderContext<Self>) -> ElementBox {
5854 let style = self.style(cx);
5855 self.display_map.update(cx, |map, cx| {
5856 map.set_font(style.text.font_id, style.text.font_size, cx)
5857 });
5858 EditorElement::new(self.handle.clone(), style.clone(), self.cursor_shape).boxed()
5859 }
5860
5861 fn ui_name() -> &'static str {
5862 "Editor"
5863 }
5864
5865 fn on_focus(&mut self, cx: &mut ViewContext<Self>) {
5866 let focused_event = EditorFocused(cx.handle());
5867 cx.emit_global(focused_event);
5868 if let Some(rename) = self.pending_rename.as_ref() {
5869 cx.focus(&rename.editor);
5870 } else {
5871 self.focused = true;
5872 self.blink_cursors(self.blink_epoch, cx);
5873 self.buffer.update(cx, |buffer, cx| {
5874 buffer.finalize_last_transaction(cx);
5875 if self.leader_replica_id.is_none() {
5876 buffer.set_active_selections(&self.selections, cx);
5877 }
5878 });
5879 }
5880 }
5881
5882 fn on_blur(&mut self, cx: &mut ViewContext<Self>) {
5883 let blurred_event = EditorBlurred(cx.handle());
5884 cx.emit_global(blurred_event);
5885 self.focused = false;
5886 self.buffer
5887 .update(cx, |buffer, cx| buffer.remove_active_selections(cx));
5888 self.hide_context_menu(cx);
5889 cx.emit(Event::Blurred);
5890 cx.notify();
5891 }
5892
5893 fn keymap_context(&self, _: &AppContext) -> gpui::keymap::Context {
5894 let mut context = Self::default_keymap_context();
5895 let mode = match self.mode {
5896 EditorMode::SingleLine => "single_line",
5897 EditorMode::AutoHeight { .. } => "auto_height",
5898 EditorMode::Full => "full",
5899 };
5900 context.map.insert("mode".into(), mode.into());
5901 if self.pending_rename.is_some() {
5902 context.set.insert("renaming".into());
5903 }
5904 match self.context_menu.as_ref() {
5905 Some(ContextMenu::Completions(_)) => {
5906 context.set.insert("showing_completions".into());
5907 }
5908 Some(ContextMenu::CodeActions(_)) => {
5909 context.set.insert("showing_code_actions".into());
5910 }
5911 None => {}
5912 }
5913
5914 for layer in self.keymap_context_layers.values() {
5915 context.extend(layer);
5916 }
5917
5918 context
5919 }
5920}
5921
5922fn build_style(
5923 settings: &Settings,
5924 get_field_editor_theme: Option<GetFieldEditorTheme>,
5925 override_text_style: Option<&OverrideTextStyle>,
5926 cx: &AppContext,
5927) -> EditorStyle {
5928 let font_cache = cx.font_cache();
5929
5930 let mut theme = settings.theme.editor.clone();
5931 let mut style = if let Some(get_field_editor_theme) = get_field_editor_theme {
5932 let field_editor_theme = get_field_editor_theme(&settings.theme);
5933 theme.text_color = field_editor_theme.text.color;
5934 theme.selection = field_editor_theme.selection;
5935 theme.background = field_editor_theme
5936 .container
5937 .background_color
5938 .unwrap_or_default();
5939 EditorStyle {
5940 text: field_editor_theme.text,
5941 placeholder_text: field_editor_theme.placeholder_text,
5942 theme,
5943 }
5944 } else {
5945 let font_family_id = settings.buffer_font_family;
5946 let font_family_name = cx.font_cache().family_name(font_family_id).unwrap();
5947 let font_properties = Default::default();
5948 let font_id = font_cache
5949 .select_font(font_family_id, &font_properties)
5950 .unwrap();
5951 let font_size = settings.buffer_font_size;
5952 EditorStyle {
5953 text: TextStyle {
5954 color: settings.theme.editor.text_color,
5955 font_family_name,
5956 font_family_id,
5957 font_id,
5958 font_size,
5959 font_properties,
5960 underline: Default::default(),
5961 },
5962 placeholder_text: None,
5963 theme,
5964 }
5965 };
5966
5967 if let Some(highlight_style) = override_text_style.and_then(|build_style| build_style(&style)) {
5968 if let Some(highlighted) = style
5969 .text
5970 .clone()
5971 .highlight(highlight_style, font_cache)
5972 .log_err()
5973 {
5974 style.text = highlighted;
5975 }
5976 }
5977
5978 style
5979}
5980
5981trait SelectionExt {
5982 fn offset_range(&self, buffer: &MultiBufferSnapshot) -> Range<usize>;
5983 fn point_range(&self, buffer: &MultiBufferSnapshot) -> Range<Point>;
5984 fn display_range(&self, map: &DisplaySnapshot) -> Range<DisplayPoint>;
5985 fn spanned_rows(&self, include_end_if_at_line_start: bool, map: &DisplaySnapshot)
5986 -> Range<u32>;
5987}
5988
5989impl<T: ToPoint + ToOffset> SelectionExt for Selection<T> {
5990 fn point_range(&self, buffer: &MultiBufferSnapshot) -> Range<Point> {
5991 let start = self.start.to_point(buffer);
5992 let end = self.end.to_point(buffer);
5993 if self.reversed {
5994 end..start
5995 } else {
5996 start..end
5997 }
5998 }
5999
6000 fn offset_range(&self, buffer: &MultiBufferSnapshot) -> Range<usize> {
6001 let start = self.start.to_offset(buffer);
6002 let end = self.end.to_offset(buffer);
6003 if self.reversed {
6004 end..start
6005 } else {
6006 start..end
6007 }
6008 }
6009
6010 fn display_range(&self, map: &DisplaySnapshot) -> Range<DisplayPoint> {
6011 let start = self
6012 .start
6013 .to_point(&map.buffer_snapshot)
6014 .to_display_point(map);
6015 let end = self
6016 .end
6017 .to_point(&map.buffer_snapshot)
6018 .to_display_point(map);
6019 if self.reversed {
6020 end..start
6021 } else {
6022 start..end
6023 }
6024 }
6025
6026 fn spanned_rows(
6027 &self,
6028 include_end_if_at_line_start: bool,
6029 map: &DisplaySnapshot,
6030 ) -> Range<u32> {
6031 let start = self.start.to_point(&map.buffer_snapshot);
6032 let mut end = self.end.to_point(&map.buffer_snapshot);
6033 if !include_end_if_at_line_start && start.row != end.row && end.column == 0 {
6034 end.row -= 1;
6035 }
6036
6037 let buffer_start = map.prev_line_boundary(start).0;
6038 let buffer_end = map.next_line_boundary(end).0;
6039 buffer_start.row..buffer_end.row + 1
6040 }
6041}
6042
6043impl<T: InvalidationRegion> InvalidationStack<T> {
6044 fn invalidate<S>(&mut self, selections: &[Selection<S>], buffer: &MultiBufferSnapshot)
6045 where
6046 S: Clone + ToOffset,
6047 {
6048 while let Some(region) = self.last() {
6049 let all_selections_inside_invalidation_ranges =
6050 if selections.len() == region.ranges().len() {
6051 selections
6052 .iter()
6053 .zip(region.ranges().iter().map(|r| r.to_offset(&buffer)))
6054 .all(|(selection, invalidation_range)| {
6055 let head = selection.head().to_offset(&buffer);
6056 invalidation_range.start <= head && invalidation_range.end >= head
6057 })
6058 } else {
6059 false
6060 };
6061
6062 if all_selections_inside_invalidation_ranges {
6063 break;
6064 } else {
6065 self.pop();
6066 }
6067 }
6068 }
6069}
6070
6071impl<T> Default for InvalidationStack<T> {
6072 fn default() -> Self {
6073 Self(Default::default())
6074 }
6075}
6076
6077impl<T> Deref for InvalidationStack<T> {
6078 type Target = Vec<T>;
6079
6080 fn deref(&self) -> &Self::Target {
6081 &self.0
6082 }
6083}
6084
6085impl<T> DerefMut for InvalidationStack<T> {
6086 fn deref_mut(&mut self) -> &mut Self::Target {
6087 &mut self.0
6088 }
6089}
6090
6091impl InvalidationRegion for BracketPairState {
6092 fn ranges(&self) -> &[Range<Anchor>] {
6093 &self.ranges
6094 }
6095}
6096
6097impl InvalidationRegion for SnippetState {
6098 fn ranges(&self) -> &[Range<Anchor>] {
6099 &self.ranges[self.active_index]
6100 }
6101}
6102
6103impl Deref for EditorStyle {
6104 type Target = theme::Editor;
6105
6106 fn deref(&self) -> &Self::Target {
6107 &self.theme
6108 }
6109}
6110
6111pub fn diagnostic_block_renderer(diagnostic: Diagnostic, is_valid: bool) -> RenderBlock {
6112 let mut highlighted_lines = Vec::new();
6113 for line in diagnostic.message.lines() {
6114 highlighted_lines.push(highlight_diagnostic_message(line));
6115 }
6116
6117 Arc::new(move |cx: &BlockContext| {
6118 let settings = cx.global::<Settings>();
6119 let theme = &settings.theme.editor;
6120 let style = diagnostic_style(diagnostic.severity, is_valid, theme);
6121 let font_size = (style.text_scale_factor * settings.buffer_font_size).round();
6122 Flex::column()
6123 .with_children(highlighted_lines.iter().map(|(line, highlights)| {
6124 Label::new(
6125 line.clone(),
6126 style.message.clone().with_font_size(font_size),
6127 )
6128 .with_highlights(highlights.clone())
6129 .contained()
6130 .with_margin_left(cx.anchor_x)
6131 .boxed()
6132 }))
6133 .aligned()
6134 .left()
6135 .boxed()
6136 })
6137}
6138
6139pub fn highlight_diagnostic_message(message: &str) -> (String, Vec<usize>) {
6140 let mut message_without_backticks = String::new();
6141 let mut prev_offset = 0;
6142 let mut inside_block = false;
6143 let mut highlights = Vec::new();
6144 for (match_ix, (offset, _)) in message
6145 .match_indices('`')
6146 .chain([(message.len(), "")])
6147 .enumerate()
6148 {
6149 message_without_backticks.push_str(&message[prev_offset..offset]);
6150 if inside_block {
6151 highlights.extend(prev_offset - match_ix..offset - match_ix);
6152 }
6153
6154 inside_block = !inside_block;
6155 prev_offset = offset + 1;
6156 }
6157
6158 (message_without_backticks, highlights)
6159}
6160
6161pub fn diagnostic_style(
6162 severity: DiagnosticSeverity,
6163 valid: bool,
6164 theme: &theme::Editor,
6165) -> DiagnosticStyle {
6166 match (severity, valid) {
6167 (DiagnosticSeverity::ERROR, true) => theme.error_diagnostic.clone(),
6168 (DiagnosticSeverity::ERROR, false) => theme.invalid_error_diagnostic.clone(),
6169 (DiagnosticSeverity::WARNING, true) => theme.warning_diagnostic.clone(),
6170 (DiagnosticSeverity::WARNING, false) => theme.invalid_warning_diagnostic.clone(),
6171 (DiagnosticSeverity::INFORMATION, true) => theme.information_diagnostic.clone(),
6172 (DiagnosticSeverity::INFORMATION, false) => theme.invalid_information_diagnostic.clone(),
6173 (DiagnosticSeverity::HINT, true) => theme.hint_diagnostic.clone(),
6174 (DiagnosticSeverity::HINT, false) => theme.invalid_hint_diagnostic.clone(),
6175 _ => theme.invalid_hint_diagnostic.clone(),
6176 }
6177}
6178
6179pub fn combine_syntax_and_fuzzy_match_highlights(
6180 text: &str,
6181 default_style: HighlightStyle,
6182 syntax_ranges: impl Iterator<Item = (Range<usize>, HighlightStyle)>,
6183 match_indices: &[usize],
6184) -> Vec<(Range<usize>, HighlightStyle)> {
6185 let mut result = Vec::new();
6186 let mut match_indices = match_indices.iter().copied().peekable();
6187
6188 for (range, mut syntax_highlight) in syntax_ranges.chain([(usize::MAX..0, Default::default())])
6189 {
6190 syntax_highlight.weight = None;
6191
6192 // Add highlights for any fuzzy match characters before the next
6193 // syntax highlight range.
6194 while let Some(&match_index) = match_indices.peek() {
6195 if match_index >= range.start {
6196 break;
6197 }
6198 match_indices.next();
6199 let end_index = char_ix_after(match_index, text);
6200 let mut match_style = default_style;
6201 match_style.weight = Some(fonts::Weight::BOLD);
6202 result.push((match_index..end_index, match_style));
6203 }
6204
6205 if range.start == usize::MAX {
6206 break;
6207 }
6208
6209 // Add highlights for any fuzzy match characters within the
6210 // syntax highlight range.
6211 let mut offset = range.start;
6212 while let Some(&match_index) = match_indices.peek() {
6213 if match_index >= range.end {
6214 break;
6215 }
6216
6217 match_indices.next();
6218 if match_index > offset {
6219 result.push((offset..match_index, syntax_highlight));
6220 }
6221
6222 let mut end_index = char_ix_after(match_index, text);
6223 while let Some(&next_match_index) = match_indices.peek() {
6224 if next_match_index == end_index && next_match_index < range.end {
6225 end_index = char_ix_after(next_match_index, text);
6226 match_indices.next();
6227 } else {
6228 break;
6229 }
6230 }
6231
6232 let mut match_style = syntax_highlight;
6233 match_style.weight = Some(fonts::Weight::BOLD);
6234 result.push((match_index..end_index, match_style));
6235 offset = end_index;
6236 }
6237
6238 if offset < range.end {
6239 result.push((offset..range.end, syntax_highlight));
6240 }
6241 }
6242
6243 fn char_ix_after(ix: usize, text: &str) -> usize {
6244 ix + text[ix..].chars().next().unwrap().len_utf8()
6245 }
6246
6247 result
6248}
6249
6250pub fn styled_runs_for_code_label<'a>(
6251 label: &'a CodeLabel,
6252 syntax_theme: &'a theme::SyntaxTheme,
6253) -> impl 'a + Iterator<Item = (Range<usize>, HighlightStyle)> {
6254 let fade_out = HighlightStyle {
6255 fade_out: Some(0.35),
6256 ..Default::default()
6257 };
6258
6259 let mut prev_end = label.filter_range.end;
6260 label
6261 .runs
6262 .iter()
6263 .enumerate()
6264 .flat_map(move |(ix, (range, highlight_id))| {
6265 let style = if let Some(style) = highlight_id.style(syntax_theme) {
6266 style
6267 } else {
6268 return Default::default();
6269 };
6270 let mut muted_style = style.clone();
6271 muted_style.highlight(fade_out);
6272
6273 let mut runs = SmallVec::<[(Range<usize>, HighlightStyle); 3]>::new();
6274 if range.start >= label.filter_range.end {
6275 if range.start > prev_end {
6276 runs.push((prev_end..range.start, fade_out));
6277 }
6278 runs.push((range.clone(), muted_style));
6279 } else if range.end <= label.filter_range.end {
6280 runs.push((range.clone(), style));
6281 } else {
6282 runs.push((range.start..label.filter_range.end, style));
6283 runs.push((label.filter_range.end..range.end, muted_style));
6284 }
6285 prev_end = cmp::max(prev_end, range.end);
6286
6287 if ix + 1 == label.runs.len() && label.text.len() > prev_end {
6288 runs.push((prev_end..label.text.len(), fade_out));
6289 }
6290
6291 runs
6292 })
6293}
6294
6295#[cfg(test)]
6296mod tests {
6297
6298 use super::*;
6299 use gpui::{
6300 geometry::rect::RectF,
6301 platform::{WindowBounds, WindowOptions},
6302 };
6303 use language::{LanguageConfig, LanguageServerConfig};
6304 use lsp::FakeLanguageServer;
6305 use project::FakeFs;
6306 use smol::stream::StreamExt;
6307 use std::{cell::RefCell, rc::Rc, time::Instant};
6308 use text::Point;
6309 use unindent::Unindent;
6310 use util::test::{marked_text_by, sample_text};
6311 use workspace::FollowableItem;
6312
6313 #[gpui::test]
6314 fn test_edit_events(cx: &mut MutableAppContext) {
6315 populate_settings(cx);
6316 let buffer = cx.add_model(|cx| language::Buffer::new(0, "123456", cx));
6317
6318 let events = Rc::new(RefCell::new(Vec::new()));
6319 let (_, editor1) = cx.add_window(Default::default(), {
6320 let events = events.clone();
6321 |cx| {
6322 cx.subscribe(&cx.handle(), move |_, _, event, _| {
6323 if matches!(event, Event::Edited | Event::BufferEdited | Event::Dirtied) {
6324 events.borrow_mut().push(("editor1", *event));
6325 }
6326 })
6327 .detach();
6328 Editor::for_buffer(buffer.clone(), None, cx)
6329 }
6330 });
6331 let (_, editor2) = cx.add_window(Default::default(), {
6332 let events = events.clone();
6333 |cx| {
6334 cx.subscribe(&cx.handle(), move |_, _, event, _| {
6335 if matches!(event, Event::Edited | Event::BufferEdited | Event::Dirtied) {
6336 events.borrow_mut().push(("editor2", *event));
6337 }
6338 })
6339 .detach();
6340 Editor::for_buffer(buffer.clone(), None, cx)
6341 }
6342 });
6343 assert_eq!(mem::take(&mut *events.borrow_mut()), []);
6344
6345 // Mutating editor 1 will emit an `Edited` event only for that editor.
6346 editor1.update(cx, |editor, cx| editor.insert("X", cx));
6347 assert_eq!(
6348 mem::take(&mut *events.borrow_mut()),
6349 [
6350 ("editor1", Event::Edited),
6351 ("editor1", Event::BufferEdited),
6352 ("editor2", Event::BufferEdited),
6353 ("editor1", Event::Dirtied),
6354 ("editor2", Event::Dirtied)
6355 ]
6356 );
6357
6358 // Mutating editor 2 will emit an `Edited` event only for that editor.
6359 editor2.update(cx, |editor, cx| editor.delete(&Delete, cx));
6360 assert_eq!(
6361 mem::take(&mut *events.borrow_mut()),
6362 [
6363 ("editor2", Event::Edited),
6364 ("editor1", Event::BufferEdited),
6365 ("editor2", Event::BufferEdited),
6366 ]
6367 );
6368
6369 // Undoing on editor 1 will emit an `Edited` event only for that editor.
6370 editor1.update(cx, |editor, cx| editor.undo(&Undo, cx));
6371 assert_eq!(
6372 mem::take(&mut *events.borrow_mut()),
6373 [
6374 ("editor1", Event::Edited),
6375 ("editor1", Event::BufferEdited),
6376 ("editor2", Event::BufferEdited),
6377 ]
6378 );
6379
6380 // Redoing on editor 1 will emit an `Edited` event only for that editor.
6381 editor1.update(cx, |editor, cx| editor.redo(&Redo, cx));
6382 assert_eq!(
6383 mem::take(&mut *events.borrow_mut()),
6384 [
6385 ("editor1", Event::Edited),
6386 ("editor1", Event::BufferEdited),
6387 ("editor2", Event::BufferEdited),
6388 ]
6389 );
6390
6391 // Undoing on editor 2 will emit an `Edited` event only for that editor.
6392 editor2.update(cx, |editor, cx| editor.undo(&Undo, cx));
6393 assert_eq!(
6394 mem::take(&mut *events.borrow_mut()),
6395 [
6396 ("editor2", Event::Edited),
6397 ("editor1", Event::BufferEdited),
6398 ("editor2", Event::BufferEdited),
6399 ]
6400 );
6401
6402 // Redoing on editor 2 will emit an `Edited` event only for that editor.
6403 editor2.update(cx, |editor, cx| editor.redo(&Redo, cx));
6404 assert_eq!(
6405 mem::take(&mut *events.borrow_mut()),
6406 [
6407 ("editor2", Event::Edited),
6408 ("editor1", Event::BufferEdited),
6409 ("editor2", Event::BufferEdited),
6410 ]
6411 );
6412
6413 // No event is emitted when the mutation is a no-op.
6414 editor2.update(cx, |editor, cx| {
6415 editor.select_ranges([0..0], None, cx);
6416 editor.backspace(&Backspace, cx);
6417 });
6418 assert_eq!(mem::take(&mut *events.borrow_mut()), []);
6419 }
6420
6421 #[gpui::test]
6422 fn test_undo_redo_with_selection_restoration(cx: &mut MutableAppContext) {
6423 populate_settings(cx);
6424 let mut now = Instant::now();
6425 let buffer = cx.add_model(|cx| language::Buffer::new(0, "123456", cx));
6426 let group_interval = buffer.read(cx).transaction_group_interval();
6427 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
6428 let (_, editor) = cx.add_window(Default::default(), |cx| build_editor(buffer.clone(), cx));
6429
6430 editor.update(cx, |editor, cx| {
6431 editor.start_transaction_at(now, cx);
6432 editor.select_ranges([2..4], None, cx);
6433 editor.insert("cd", cx);
6434 editor.end_transaction_at(now, cx);
6435 assert_eq!(editor.text(cx), "12cd56");
6436 assert_eq!(editor.selected_ranges(cx), vec![4..4]);
6437
6438 editor.start_transaction_at(now, cx);
6439 editor.select_ranges([4..5], None, cx);
6440 editor.insert("e", cx);
6441 editor.end_transaction_at(now, cx);
6442 assert_eq!(editor.text(cx), "12cde6");
6443 assert_eq!(editor.selected_ranges(cx), vec![5..5]);
6444
6445 now += group_interval + Duration::from_millis(1);
6446 editor.select_ranges([2..2], None, cx);
6447
6448 // Simulate an edit in another editor
6449 buffer.update(cx, |buffer, cx| {
6450 buffer.start_transaction_at(now, cx);
6451 buffer.edit([0..1], "a", cx);
6452 buffer.edit([1..1], "b", cx);
6453 buffer.end_transaction_at(now, cx);
6454 });
6455
6456 assert_eq!(editor.text(cx), "ab2cde6");
6457 assert_eq!(editor.selected_ranges(cx), vec![3..3]);
6458
6459 // Last transaction happened past the group interval in a different editor.
6460 // Undo it individually and don't restore selections.
6461 editor.undo(&Undo, cx);
6462 assert_eq!(editor.text(cx), "12cde6");
6463 assert_eq!(editor.selected_ranges(cx), vec![2..2]);
6464
6465 // First two transactions happened within the group interval in this editor.
6466 // Undo them together and restore selections.
6467 editor.undo(&Undo, cx);
6468 editor.undo(&Undo, cx); // Undo stack is empty here, so this is a no-op.
6469 assert_eq!(editor.text(cx), "123456");
6470 assert_eq!(editor.selected_ranges(cx), vec![0..0]);
6471
6472 // Redo the first two transactions together.
6473 editor.redo(&Redo, cx);
6474 assert_eq!(editor.text(cx), "12cde6");
6475 assert_eq!(editor.selected_ranges(cx), vec![5..5]);
6476
6477 // Redo the last transaction on its own.
6478 editor.redo(&Redo, cx);
6479 assert_eq!(editor.text(cx), "ab2cde6");
6480 assert_eq!(editor.selected_ranges(cx), vec![6..6]);
6481
6482 // Test empty transactions.
6483 editor.start_transaction_at(now, cx);
6484 editor.end_transaction_at(now, cx);
6485 editor.undo(&Undo, cx);
6486 assert_eq!(editor.text(cx), "12cde6");
6487 });
6488 }
6489
6490 #[gpui::test]
6491 fn test_selection_with_mouse(cx: &mut gpui::MutableAppContext) {
6492 populate_settings(cx);
6493
6494 let buffer = MultiBuffer::build_simple("aaaaaa\nbbbbbb\ncccccc\nddddddd\n", cx);
6495 let (_, editor) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
6496 editor.update(cx, |view, cx| {
6497 view.begin_selection(DisplayPoint::new(2, 2), false, 1, cx);
6498 });
6499 assert_eq!(
6500 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
6501 [DisplayPoint::new(2, 2)..DisplayPoint::new(2, 2)]
6502 );
6503
6504 editor.update(cx, |view, cx| {
6505 view.update_selection(DisplayPoint::new(3, 3), 0, Vector2F::zero(), cx);
6506 });
6507
6508 assert_eq!(
6509 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
6510 [DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3)]
6511 );
6512
6513 editor.update(cx, |view, cx| {
6514 view.update_selection(DisplayPoint::new(1, 1), 0, Vector2F::zero(), cx);
6515 });
6516
6517 assert_eq!(
6518 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
6519 [DisplayPoint::new(2, 2)..DisplayPoint::new(1, 1)]
6520 );
6521
6522 editor.update(cx, |view, cx| {
6523 view.end_selection(cx);
6524 view.update_selection(DisplayPoint::new(3, 3), 0, Vector2F::zero(), cx);
6525 });
6526
6527 assert_eq!(
6528 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
6529 [DisplayPoint::new(2, 2)..DisplayPoint::new(1, 1)]
6530 );
6531
6532 editor.update(cx, |view, cx| {
6533 view.begin_selection(DisplayPoint::new(3, 3), true, 1, cx);
6534 view.update_selection(DisplayPoint::new(0, 0), 0, Vector2F::zero(), cx);
6535 });
6536
6537 assert_eq!(
6538 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
6539 [
6540 DisplayPoint::new(2, 2)..DisplayPoint::new(1, 1),
6541 DisplayPoint::new(3, 3)..DisplayPoint::new(0, 0)
6542 ]
6543 );
6544
6545 editor.update(cx, |view, cx| {
6546 view.end_selection(cx);
6547 });
6548
6549 assert_eq!(
6550 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
6551 [DisplayPoint::new(3, 3)..DisplayPoint::new(0, 0)]
6552 );
6553 }
6554
6555 #[gpui::test]
6556 fn test_canceling_pending_selection(cx: &mut gpui::MutableAppContext) {
6557 populate_settings(cx);
6558 let buffer = MultiBuffer::build_simple("aaaaaa\nbbbbbb\ncccccc\ndddddd\n", cx);
6559 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
6560
6561 view.update(cx, |view, cx| {
6562 view.begin_selection(DisplayPoint::new(2, 2), false, 1, cx);
6563 assert_eq!(
6564 view.selected_display_ranges(cx),
6565 [DisplayPoint::new(2, 2)..DisplayPoint::new(2, 2)]
6566 );
6567 });
6568
6569 view.update(cx, |view, cx| {
6570 view.update_selection(DisplayPoint::new(3, 3), 0, Vector2F::zero(), cx);
6571 assert_eq!(
6572 view.selected_display_ranges(cx),
6573 [DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3)]
6574 );
6575 });
6576
6577 view.update(cx, |view, cx| {
6578 view.cancel(&Cancel, cx);
6579 view.update_selection(DisplayPoint::new(1, 1), 0, Vector2F::zero(), cx);
6580 assert_eq!(
6581 view.selected_display_ranges(cx),
6582 [DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3)]
6583 );
6584 });
6585 }
6586
6587 #[gpui::test]
6588 fn test_navigation_history(cx: &mut gpui::MutableAppContext) {
6589 populate_settings(cx);
6590 use workspace::Item;
6591 let nav_history = Rc::new(RefCell::new(workspace::NavHistory::default()));
6592 let buffer = MultiBuffer::build_simple(&sample_text(30, 5, 'a'), cx);
6593
6594 cx.add_window(Default::default(), |cx| {
6595 let mut editor = build_editor(buffer.clone(), cx);
6596 editor.nav_history = Some(ItemNavHistory::new(nav_history.clone(), &cx.handle()));
6597
6598 // Move the cursor a small distance.
6599 // Nothing is added to the navigation history.
6600 editor.select_display_ranges(&[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)], cx);
6601 editor.select_display_ranges(&[DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0)], cx);
6602 assert!(nav_history.borrow_mut().pop_backward().is_none());
6603
6604 // Move the cursor a large distance.
6605 // The history can jump back to the previous position.
6606 editor.select_display_ranges(&[DisplayPoint::new(13, 0)..DisplayPoint::new(13, 3)], cx);
6607 let nav_entry = nav_history.borrow_mut().pop_backward().unwrap();
6608 editor.navigate(nav_entry.data.unwrap(), cx);
6609 assert_eq!(nav_entry.item.id(), cx.view_id());
6610 assert_eq!(
6611 editor.selected_display_ranges(cx),
6612 &[DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0)]
6613 );
6614 assert!(nav_history.borrow_mut().pop_backward().is_none());
6615
6616 // Move the cursor a small distance via the mouse.
6617 // Nothing is added to the navigation history.
6618 editor.begin_selection(DisplayPoint::new(5, 0), false, 1, cx);
6619 editor.end_selection(cx);
6620 assert_eq!(
6621 editor.selected_display_ranges(cx),
6622 &[DisplayPoint::new(5, 0)..DisplayPoint::new(5, 0)]
6623 );
6624 assert!(nav_history.borrow_mut().pop_backward().is_none());
6625
6626 // Move the cursor a large distance via the mouse.
6627 // The history can jump back to the previous position.
6628 editor.begin_selection(DisplayPoint::new(15, 0), false, 1, cx);
6629 editor.end_selection(cx);
6630 assert_eq!(
6631 editor.selected_display_ranges(cx),
6632 &[DisplayPoint::new(15, 0)..DisplayPoint::new(15, 0)]
6633 );
6634 let nav_entry = nav_history.borrow_mut().pop_backward().unwrap();
6635 editor.navigate(nav_entry.data.unwrap(), cx);
6636 assert_eq!(nav_entry.item.id(), cx.view_id());
6637 assert_eq!(
6638 editor.selected_display_ranges(cx),
6639 &[DisplayPoint::new(5, 0)..DisplayPoint::new(5, 0)]
6640 );
6641 assert!(nav_history.borrow_mut().pop_backward().is_none());
6642
6643 editor
6644 });
6645 }
6646
6647 #[gpui::test]
6648 fn test_cancel(cx: &mut gpui::MutableAppContext) {
6649 populate_settings(cx);
6650 let buffer = MultiBuffer::build_simple("aaaaaa\nbbbbbb\ncccccc\ndddddd\n", cx);
6651 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
6652
6653 view.update(cx, |view, cx| {
6654 view.begin_selection(DisplayPoint::new(3, 4), false, 1, cx);
6655 view.update_selection(DisplayPoint::new(1, 1), 0, Vector2F::zero(), cx);
6656 view.end_selection(cx);
6657
6658 view.begin_selection(DisplayPoint::new(0, 1), true, 1, cx);
6659 view.update_selection(DisplayPoint::new(0, 3), 0, Vector2F::zero(), cx);
6660 view.end_selection(cx);
6661 assert_eq!(
6662 view.selected_display_ranges(cx),
6663 [
6664 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
6665 DisplayPoint::new(3, 4)..DisplayPoint::new(1, 1),
6666 ]
6667 );
6668 });
6669
6670 view.update(cx, |view, cx| {
6671 view.cancel(&Cancel, cx);
6672 assert_eq!(
6673 view.selected_display_ranges(cx),
6674 [DisplayPoint::new(3, 4)..DisplayPoint::new(1, 1)]
6675 );
6676 });
6677
6678 view.update(cx, |view, cx| {
6679 view.cancel(&Cancel, cx);
6680 assert_eq!(
6681 view.selected_display_ranges(cx),
6682 [DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1)]
6683 );
6684 });
6685 }
6686
6687 #[gpui::test]
6688 fn test_fold(cx: &mut gpui::MutableAppContext) {
6689 populate_settings(cx);
6690 let buffer = MultiBuffer::build_simple(
6691 &"
6692 impl Foo {
6693 // Hello!
6694
6695 fn a() {
6696 1
6697 }
6698
6699 fn b() {
6700 2
6701 }
6702
6703 fn c() {
6704 3
6705 }
6706 }
6707 "
6708 .unindent(),
6709 cx,
6710 );
6711 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer.clone(), cx));
6712
6713 view.update(cx, |view, cx| {
6714 view.select_display_ranges(&[DisplayPoint::new(8, 0)..DisplayPoint::new(12, 0)], cx);
6715 view.fold(&Fold, cx);
6716 assert_eq!(
6717 view.display_text(cx),
6718 "
6719 impl Foo {
6720 // Hello!
6721
6722 fn a() {
6723 1
6724 }
6725
6726 fn b() {…
6727 }
6728
6729 fn c() {…
6730 }
6731 }
6732 "
6733 .unindent(),
6734 );
6735
6736 view.fold(&Fold, cx);
6737 assert_eq!(
6738 view.display_text(cx),
6739 "
6740 impl Foo {…
6741 }
6742 "
6743 .unindent(),
6744 );
6745
6746 view.unfold_lines(&UnfoldLines, cx);
6747 assert_eq!(
6748 view.display_text(cx),
6749 "
6750 impl Foo {
6751 // Hello!
6752
6753 fn a() {
6754 1
6755 }
6756
6757 fn b() {…
6758 }
6759
6760 fn c() {…
6761 }
6762 }
6763 "
6764 .unindent(),
6765 );
6766
6767 view.unfold_lines(&UnfoldLines, cx);
6768 assert_eq!(view.display_text(cx), buffer.read(cx).read(cx).text());
6769 });
6770 }
6771
6772 #[gpui::test]
6773 fn test_move_cursor(cx: &mut gpui::MutableAppContext) {
6774 populate_settings(cx);
6775 let buffer = MultiBuffer::build_simple(&sample_text(6, 6, 'a'), cx);
6776 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer.clone(), cx));
6777
6778 buffer.update(cx, |buffer, cx| {
6779 buffer.edit(
6780 vec![
6781 Point::new(1, 0)..Point::new(1, 0),
6782 Point::new(1, 1)..Point::new(1, 1),
6783 ],
6784 "\t",
6785 cx,
6786 );
6787 });
6788
6789 view.update(cx, |view, cx| {
6790 assert_eq!(
6791 view.selected_display_ranges(cx),
6792 &[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)]
6793 );
6794
6795 view.move_down(&MoveDown, cx);
6796 assert_eq!(
6797 view.selected_display_ranges(cx),
6798 &[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)]
6799 );
6800
6801 view.move_right(&MoveRight, cx);
6802 assert_eq!(
6803 view.selected_display_ranges(cx),
6804 &[DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4)]
6805 );
6806
6807 view.move_left(&MoveLeft, cx);
6808 assert_eq!(
6809 view.selected_display_ranges(cx),
6810 &[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)]
6811 );
6812
6813 view.move_up(&MoveUp, cx);
6814 assert_eq!(
6815 view.selected_display_ranges(cx),
6816 &[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)]
6817 );
6818
6819 view.move_to_end(&MoveToEnd, cx);
6820 assert_eq!(
6821 view.selected_display_ranges(cx),
6822 &[DisplayPoint::new(5, 6)..DisplayPoint::new(5, 6)]
6823 );
6824
6825 view.move_to_beginning(&MoveToBeginning, cx);
6826 assert_eq!(
6827 view.selected_display_ranges(cx),
6828 &[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)]
6829 );
6830
6831 view.select_display_ranges(&[DisplayPoint::new(0, 1)..DisplayPoint::new(0, 2)], cx);
6832 view.select_to_beginning(&SelectToBeginning, cx);
6833 assert_eq!(
6834 view.selected_display_ranges(cx),
6835 &[DisplayPoint::new(0, 1)..DisplayPoint::new(0, 0)]
6836 );
6837
6838 view.select_to_end(&SelectToEnd, cx);
6839 assert_eq!(
6840 view.selected_display_ranges(cx),
6841 &[DisplayPoint::new(0, 1)..DisplayPoint::new(5, 6)]
6842 );
6843 });
6844 }
6845
6846 #[gpui::test]
6847 fn test_move_cursor_multibyte(cx: &mut gpui::MutableAppContext) {
6848 populate_settings(cx);
6849 let buffer = MultiBuffer::build_simple("ⓐⓑⓒⓓⓔ\nabcde\nαβγδε\n", cx);
6850 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer.clone(), cx));
6851
6852 assert_eq!('ⓐ'.len_utf8(), 3);
6853 assert_eq!('α'.len_utf8(), 2);
6854
6855 view.update(cx, |view, cx| {
6856 view.fold_ranges(
6857 vec![
6858 Point::new(0, 6)..Point::new(0, 12),
6859 Point::new(1, 2)..Point::new(1, 4),
6860 Point::new(2, 4)..Point::new(2, 8),
6861 ],
6862 cx,
6863 );
6864 assert_eq!(view.display_text(cx), "ⓐⓑ…ⓔ\nab…e\nαβ…ε\n");
6865
6866 view.move_right(&MoveRight, cx);
6867 assert_eq!(
6868 view.selected_display_ranges(cx),
6869 &[empty_range(0, "ⓐ".len())]
6870 );
6871 view.move_right(&MoveRight, cx);
6872 assert_eq!(
6873 view.selected_display_ranges(cx),
6874 &[empty_range(0, "ⓐⓑ".len())]
6875 );
6876 view.move_right(&MoveRight, cx);
6877 assert_eq!(
6878 view.selected_display_ranges(cx),
6879 &[empty_range(0, "ⓐⓑ…".len())]
6880 );
6881
6882 view.move_down(&MoveDown, cx);
6883 assert_eq!(
6884 view.selected_display_ranges(cx),
6885 &[empty_range(1, "ab…".len())]
6886 );
6887 view.move_left(&MoveLeft, cx);
6888 assert_eq!(
6889 view.selected_display_ranges(cx),
6890 &[empty_range(1, "ab".len())]
6891 );
6892 view.move_left(&MoveLeft, cx);
6893 assert_eq!(
6894 view.selected_display_ranges(cx),
6895 &[empty_range(1, "a".len())]
6896 );
6897
6898 view.move_down(&MoveDown, cx);
6899 assert_eq!(
6900 view.selected_display_ranges(cx),
6901 &[empty_range(2, "α".len())]
6902 );
6903 view.move_right(&MoveRight, cx);
6904 assert_eq!(
6905 view.selected_display_ranges(cx),
6906 &[empty_range(2, "αβ".len())]
6907 );
6908 view.move_right(&MoveRight, cx);
6909 assert_eq!(
6910 view.selected_display_ranges(cx),
6911 &[empty_range(2, "αβ…".len())]
6912 );
6913 view.move_right(&MoveRight, cx);
6914 assert_eq!(
6915 view.selected_display_ranges(cx),
6916 &[empty_range(2, "αβ…ε".len())]
6917 );
6918
6919 view.move_up(&MoveUp, cx);
6920 assert_eq!(
6921 view.selected_display_ranges(cx),
6922 &[empty_range(1, "ab…e".len())]
6923 );
6924 view.move_up(&MoveUp, cx);
6925 assert_eq!(
6926 view.selected_display_ranges(cx),
6927 &[empty_range(0, "ⓐⓑ…ⓔ".len())]
6928 );
6929 view.move_left(&MoveLeft, cx);
6930 assert_eq!(
6931 view.selected_display_ranges(cx),
6932 &[empty_range(0, "ⓐⓑ…".len())]
6933 );
6934 view.move_left(&MoveLeft, cx);
6935 assert_eq!(
6936 view.selected_display_ranges(cx),
6937 &[empty_range(0, "ⓐⓑ".len())]
6938 );
6939 view.move_left(&MoveLeft, cx);
6940 assert_eq!(
6941 view.selected_display_ranges(cx),
6942 &[empty_range(0, "ⓐ".len())]
6943 );
6944 });
6945 }
6946
6947 #[gpui::test]
6948 fn test_move_cursor_different_line_lengths(cx: &mut gpui::MutableAppContext) {
6949 populate_settings(cx);
6950 let buffer = MultiBuffer::build_simple("ⓐⓑⓒⓓⓔ\nabcd\nαβγ\nabcd\nⓐⓑⓒⓓⓔ\n", cx);
6951 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer.clone(), cx));
6952 view.update(cx, |view, cx| {
6953 view.select_display_ranges(&[empty_range(0, "ⓐⓑⓒⓓⓔ".len())], cx);
6954 view.move_down(&MoveDown, cx);
6955 assert_eq!(
6956 view.selected_display_ranges(cx),
6957 &[empty_range(1, "abcd".len())]
6958 );
6959
6960 view.move_down(&MoveDown, cx);
6961 assert_eq!(
6962 view.selected_display_ranges(cx),
6963 &[empty_range(2, "αβγ".len())]
6964 );
6965
6966 view.move_down(&MoveDown, cx);
6967 assert_eq!(
6968 view.selected_display_ranges(cx),
6969 &[empty_range(3, "abcd".len())]
6970 );
6971
6972 view.move_down(&MoveDown, cx);
6973 assert_eq!(
6974 view.selected_display_ranges(cx),
6975 &[empty_range(4, "ⓐⓑⓒⓓⓔ".len())]
6976 );
6977
6978 view.move_up(&MoveUp, cx);
6979 assert_eq!(
6980 view.selected_display_ranges(cx),
6981 &[empty_range(3, "abcd".len())]
6982 );
6983
6984 view.move_up(&MoveUp, cx);
6985 assert_eq!(
6986 view.selected_display_ranges(cx),
6987 &[empty_range(2, "αβγ".len())]
6988 );
6989 });
6990 }
6991
6992 #[gpui::test]
6993 fn test_beginning_end_of_line(cx: &mut gpui::MutableAppContext) {
6994 populate_settings(cx);
6995 let buffer = MultiBuffer::build_simple("abc\n def", cx);
6996 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
6997 view.update(cx, |view, cx| {
6998 view.select_display_ranges(
6999 &[
7000 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
7001 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4),
7002 ],
7003 cx,
7004 );
7005 });
7006
7007 view.update(cx, |view, cx| {
7008 view.move_to_beginning_of_line(&MoveToBeginningOfLine, cx);
7009 assert_eq!(
7010 view.selected_display_ranges(cx),
7011 &[
7012 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
7013 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
7014 ]
7015 );
7016 });
7017
7018 view.update(cx, |view, cx| {
7019 view.move_to_beginning_of_line(&MoveToBeginningOfLine, cx);
7020 assert_eq!(
7021 view.selected_display_ranges(cx),
7022 &[
7023 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
7024 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
7025 ]
7026 );
7027 });
7028
7029 view.update(cx, |view, cx| {
7030 view.move_to_beginning_of_line(&MoveToBeginningOfLine, cx);
7031 assert_eq!(
7032 view.selected_display_ranges(cx),
7033 &[
7034 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
7035 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
7036 ]
7037 );
7038 });
7039
7040 view.update(cx, |view, cx| {
7041 view.move_to_end_of_line(&MoveToEndOfLine, cx);
7042 assert_eq!(
7043 view.selected_display_ranges(cx),
7044 &[
7045 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
7046 DisplayPoint::new(1, 5)..DisplayPoint::new(1, 5),
7047 ]
7048 );
7049 });
7050
7051 // Moving to the end of line again is a no-op.
7052 view.update(cx, |view, cx| {
7053 view.move_to_end_of_line(&MoveToEndOfLine, cx);
7054 assert_eq!(
7055 view.selected_display_ranges(cx),
7056 &[
7057 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
7058 DisplayPoint::new(1, 5)..DisplayPoint::new(1, 5),
7059 ]
7060 );
7061 });
7062
7063 view.update(cx, |view, cx| {
7064 view.move_left(&MoveLeft, cx);
7065 view.select_to_beginning_of_line(&SelectToBeginningOfLine(true), cx);
7066 assert_eq!(
7067 view.selected_display_ranges(cx),
7068 &[
7069 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 0),
7070 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 2),
7071 ]
7072 );
7073 });
7074
7075 view.update(cx, |view, cx| {
7076 view.select_to_beginning_of_line(&SelectToBeginningOfLine(true), cx);
7077 assert_eq!(
7078 view.selected_display_ranges(cx),
7079 &[
7080 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 0),
7081 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 0),
7082 ]
7083 );
7084 });
7085
7086 view.update(cx, |view, cx| {
7087 view.select_to_beginning_of_line(&SelectToBeginningOfLine(true), cx);
7088 assert_eq!(
7089 view.selected_display_ranges(cx),
7090 &[
7091 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 0),
7092 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 2),
7093 ]
7094 );
7095 });
7096
7097 view.update(cx, |view, cx| {
7098 view.select_to_end_of_line(&SelectToEndOfLine(true), cx);
7099 assert_eq!(
7100 view.selected_display_ranges(cx),
7101 &[
7102 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 3),
7103 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 5),
7104 ]
7105 );
7106 });
7107
7108 view.update(cx, |view, cx| {
7109 view.delete_to_end_of_line(&DeleteToEndOfLine, cx);
7110 assert_eq!(view.display_text(cx), "ab\n de");
7111 assert_eq!(
7112 view.selected_display_ranges(cx),
7113 &[
7114 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
7115 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4),
7116 ]
7117 );
7118 });
7119
7120 view.update(cx, |view, cx| {
7121 view.delete_to_beginning_of_line(&DeleteToBeginningOfLine, cx);
7122 assert_eq!(view.display_text(cx), "\n");
7123 assert_eq!(
7124 view.selected_display_ranges(cx),
7125 &[
7126 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
7127 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
7128 ]
7129 );
7130 });
7131 }
7132
7133 #[gpui::test]
7134 fn test_prev_next_word_boundary(cx: &mut gpui::MutableAppContext) {
7135 populate_settings(cx);
7136 let buffer = MultiBuffer::build_simple("use std::str::{foo, bar}\n\n {baz.qux()}", cx);
7137 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
7138 view.update(cx, |view, cx| {
7139 view.select_display_ranges(
7140 &[
7141 DisplayPoint::new(0, 11)..DisplayPoint::new(0, 11),
7142 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 4),
7143 ],
7144 cx,
7145 );
7146
7147 view.move_to_previous_word_start(&MoveToPreviousWordStart, cx);
7148 assert_selection_ranges(
7149 "use std::<>str::{foo, bar}\n\n {[]baz.qux()}",
7150 vec![('<', '>'), ('[', ']')],
7151 view,
7152 cx,
7153 );
7154
7155 view.move_to_previous_word_start(&MoveToPreviousWordStart, cx);
7156 assert_selection_ranges(
7157 "use std<>::str::{foo, bar}\n\n []{baz.qux()}",
7158 vec![('<', '>'), ('[', ']')],
7159 view,
7160 cx,
7161 );
7162
7163 view.move_to_previous_word_start(&MoveToPreviousWordStart, cx);
7164 assert_selection_ranges(
7165 "use <>std::str::{foo, bar}\n\n[] {baz.qux()}",
7166 vec![('<', '>'), ('[', ']')],
7167 view,
7168 cx,
7169 );
7170
7171 view.move_to_previous_word_start(&MoveToPreviousWordStart, cx);
7172 assert_selection_ranges(
7173 "<>use std::str::{foo, bar}\n[]\n {baz.qux()}",
7174 vec![('<', '>'), ('[', ']')],
7175 view,
7176 cx,
7177 );
7178
7179 view.move_to_previous_word_start(&MoveToPreviousWordStart, cx);
7180 assert_selection_ranges(
7181 "<>use std::str::{foo, bar[]}\n\n {baz.qux()}",
7182 vec![('<', '>'), ('[', ']')],
7183 view,
7184 cx,
7185 );
7186
7187 view.move_to_next_word_end(&MoveToNextWordEnd, cx);
7188 assert_selection_ranges(
7189 "use<> std::str::{foo, bar}[]\n\n {baz.qux()}",
7190 vec![('<', '>'), ('[', ']')],
7191 view,
7192 cx,
7193 );
7194
7195 view.move_to_next_word_end(&MoveToNextWordEnd, cx);
7196 assert_selection_ranges(
7197 "use std<>::str::{foo, bar}\n[]\n {baz.qux()}",
7198 vec![('<', '>'), ('[', ']')],
7199 view,
7200 cx,
7201 );
7202
7203 view.move_to_next_word_end(&MoveToNextWordEnd, cx);
7204 assert_selection_ranges(
7205 "use std::<>str::{foo, bar}\n\n {[]baz.qux()}",
7206 vec![('<', '>'), ('[', ']')],
7207 view,
7208 cx,
7209 );
7210
7211 view.move_right(&MoveRight, cx);
7212 view.select_to_previous_word_start(&SelectToPreviousWordStart, cx);
7213 assert_selection_ranges(
7214 "use std::>s<tr::{foo, bar}\n\n {]b[az.qux()}",
7215 vec![('<', '>'), ('[', ']')],
7216 view,
7217 cx,
7218 );
7219
7220 view.select_to_previous_word_start(&SelectToPreviousWordStart, cx);
7221 assert_selection_ranges(
7222 "use std>::s<tr::{foo, bar}\n\n ]{b[az.qux()}",
7223 vec![('<', '>'), ('[', ']')],
7224 view,
7225 cx,
7226 );
7227
7228 view.select_to_next_word_end(&SelectToNextWordEnd, cx);
7229 assert_selection_ranges(
7230 "use std::>s<tr::{foo, bar}\n\n {]b[az.qux()}",
7231 vec![('<', '>'), ('[', ']')],
7232 view,
7233 cx,
7234 );
7235 });
7236 }
7237
7238 #[gpui::test]
7239 fn test_prev_next_word_bounds_with_soft_wrap(cx: &mut gpui::MutableAppContext) {
7240 populate_settings(cx);
7241 let buffer = MultiBuffer::build_simple("use one::{\n two::three::four::five\n};", cx);
7242 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
7243
7244 view.update(cx, |view, cx| {
7245 view.set_wrap_width(Some(140.), cx);
7246 assert_eq!(
7247 view.display_text(cx),
7248 "use one::{\n two::three::\n four::five\n};"
7249 );
7250
7251 view.select_display_ranges(&[DisplayPoint::new(1, 7)..DisplayPoint::new(1, 7)], cx);
7252
7253 view.move_to_next_word_end(&MoveToNextWordEnd, cx);
7254 assert_eq!(
7255 view.selected_display_ranges(cx),
7256 &[DisplayPoint::new(1, 9)..DisplayPoint::new(1, 9)]
7257 );
7258
7259 view.move_to_next_word_end(&MoveToNextWordEnd, cx);
7260 assert_eq!(
7261 view.selected_display_ranges(cx),
7262 &[DisplayPoint::new(1, 14)..DisplayPoint::new(1, 14)]
7263 );
7264
7265 view.move_to_next_word_end(&MoveToNextWordEnd, cx);
7266 assert_eq!(
7267 view.selected_display_ranges(cx),
7268 &[DisplayPoint::new(2, 4)..DisplayPoint::new(2, 4)]
7269 );
7270
7271 view.move_to_next_word_end(&MoveToNextWordEnd, cx);
7272 assert_eq!(
7273 view.selected_display_ranges(cx),
7274 &[DisplayPoint::new(2, 8)..DisplayPoint::new(2, 8)]
7275 );
7276
7277 view.move_to_previous_word_start(&MoveToPreviousWordStart, cx);
7278 assert_eq!(
7279 view.selected_display_ranges(cx),
7280 &[DisplayPoint::new(2, 4)..DisplayPoint::new(2, 4)]
7281 );
7282
7283 view.move_to_previous_word_start(&MoveToPreviousWordStart, cx);
7284 assert_eq!(
7285 view.selected_display_ranges(cx),
7286 &[DisplayPoint::new(1, 14)..DisplayPoint::new(1, 14)]
7287 );
7288 });
7289 }
7290
7291 #[gpui::test]
7292 fn test_delete_to_word_boundary(cx: &mut gpui::MutableAppContext) {
7293 populate_settings(cx);
7294 let buffer = MultiBuffer::build_simple("one two three four", cx);
7295 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer.clone(), cx));
7296
7297 view.update(cx, |view, cx| {
7298 view.select_display_ranges(
7299 &[
7300 // an empty selection - the preceding word fragment is deleted
7301 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
7302 // characters selected - they are deleted
7303 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 12),
7304 ],
7305 cx,
7306 );
7307 view.delete_to_previous_word_start(&DeleteToPreviousWordStart, cx);
7308 });
7309
7310 assert_eq!(buffer.read(cx).read(cx).text(), "e two te four");
7311
7312 view.update(cx, |view, cx| {
7313 view.select_display_ranges(
7314 &[
7315 // an empty selection - the following word fragment is deleted
7316 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
7317 // characters selected - they are deleted
7318 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 10),
7319 ],
7320 cx,
7321 );
7322 view.delete_to_next_word_end(&DeleteToNextWordEnd, cx);
7323 });
7324
7325 assert_eq!(buffer.read(cx).read(cx).text(), "e t te our");
7326 }
7327
7328 #[gpui::test]
7329 fn test_newline(cx: &mut gpui::MutableAppContext) {
7330 populate_settings(cx);
7331 let buffer = MultiBuffer::build_simple("aaaa\n bbbb\n", cx);
7332 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer.clone(), cx));
7333
7334 view.update(cx, |view, cx| {
7335 view.select_display_ranges(
7336 &[
7337 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
7338 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
7339 DisplayPoint::new(1, 6)..DisplayPoint::new(1, 6),
7340 ],
7341 cx,
7342 );
7343
7344 view.newline(&Newline, cx);
7345 assert_eq!(view.text(cx), "aa\naa\n \n bb\n bb\n");
7346 });
7347 }
7348
7349 #[gpui::test]
7350 fn test_newline_with_old_selections(cx: &mut gpui::MutableAppContext) {
7351 populate_settings(cx);
7352 let buffer = MultiBuffer::build_simple(
7353 "
7354 a
7355 b(
7356 X
7357 )
7358 c(
7359 X
7360 )
7361 "
7362 .unindent()
7363 .as_str(),
7364 cx,
7365 );
7366
7367 let (_, editor) = cx.add_window(Default::default(), |cx| {
7368 let mut editor = build_editor(buffer.clone(), cx);
7369 editor.select_ranges(
7370 [
7371 Point::new(2, 4)..Point::new(2, 5),
7372 Point::new(5, 4)..Point::new(5, 5),
7373 ],
7374 None,
7375 cx,
7376 );
7377 editor
7378 });
7379
7380 // Edit the buffer directly, deleting ranges surrounding the editor's selections
7381 buffer.update(cx, |buffer, cx| {
7382 buffer.edit(
7383 [
7384 Point::new(1, 2)..Point::new(3, 0),
7385 Point::new(4, 2)..Point::new(6, 0),
7386 ],
7387 "",
7388 cx,
7389 );
7390 assert_eq!(
7391 buffer.read(cx).text(),
7392 "
7393 a
7394 b()
7395 c()
7396 "
7397 .unindent()
7398 );
7399 });
7400
7401 editor.update(cx, |editor, cx| {
7402 assert_eq!(
7403 editor.selected_ranges(cx),
7404 &[
7405 Point::new(1, 2)..Point::new(1, 2),
7406 Point::new(2, 2)..Point::new(2, 2),
7407 ],
7408 );
7409
7410 editor.newline(&Newline, cx);
7411 assert_eq!(
7412 editor.text(cx),
7413 "
7414 a
7415 b(
7416 )
7417 c(
7418 )
7419 "
7420 .unindent()
7421 );
7422
7423 // The selections are moved after the inserted newlines
7424 assert_eq!(
7425 editor.selected_ranges(cx),
7426 &[
7427 Point::new(2, 0)..Point::new(2, 0),
7428 Point::new(4, 0)..Point::new(4, 0),
7429 ],
7430 );
7431 });
7432 }
7433
7434 #[gpui::test]
7435 fn test_insert_with_old_selections(cx: &mut gpui::MutableAppContext) {
7436 populate_settings(cx);
7437 let buffer = MultiBuffer::build_simple("a( X ), b( Y ), c( Z )", cx);
7438 let (_, editor) = cx.add_window(Default::default(), |cx| {
7439 let mut editor = build_editor(buffer.clone(), cx);
7440 editor.select_ranges([3..4, 11..12, 19..20], None, cx);
7441 editor
7442 });
7443
7444 // Edit the buffer directly, deleting ranges surrounding the editor's selections
7445 buffer.update(cx, |buffer, cx| {
7446 buffer.edit([2..5, 10..13, 18..21], "", cx);
7447 assert_eq!(buffer.read(cx).text(), "a(), b(), c()".unindent());
7448 });
7449
7450 editor.update(cx, |editor, cx| {
7451 assert_eq!(editor.selected_ranges(cx), &[2..2, 7..7, 12..12],);
7452
7453 editor.insert("Z", cx);
7454 assert_eq!(editor.text(cx), "a(Z), b(Z), c(Z)");
7455
7456 // The selections are moved after the inserted characters
7457 assert_eq!(editor.selected_ranges(cx), &[3..3, 9..9, 15..15],);
7458 });
7459 }
7460
7461 #[gpui::test]
7462 fn test_indent_outdent(cx: &mut gpui::MutableAppContext) {
7463 populate_settings(cx);
7464 let buffer = MultiBuffer::build_simple(" one two\nthree\n four", cx);
7465 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer.clone(), cx));
7466
7467 view.update(cx, |view, cx| {
7468 // two selections on the same line
7469 view.select_display_ranges(
7470 &[
7471 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 5),
7472 DisplayPoint::new(0, 6)..DisplayPoint::new(0, 9),
7473 ],
7474 cx,
7475 );
7476
7477 // indent from mid-tabstop to full tabstop
7478 view.tab(false, cx);
7479 assert_eq!(view.text(cx), " one two\nthree\n four");
7480 assert_eq!(
7481 view.selected_display_ranges(cx),
7482 &[
7483 DisplayPoint::new(0, 4)..DisplayPoint::new(0, 7),
7484 DisplayPoint::new(0, 8)..DisplayPoint::new(0, 11),
7485 ]
7486 );
7487
7488 // outdent from 1 tabstop to 0 tabstops
7489 view.outdent(&Outdent, cx);
7490 assert_eq!(view.text(cx), "one two\nthree\n four");
7491 assert_eq!(
7492 view.selected_display_ranges(cx),
7493 &[
7494 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 3),
7495 DisplayPoint::new(0, 4)..DisplayPoint::new(0, 7),
7496 ]
7497 );
7498
7499 // select across line ending
7500 view.select_display_ranges(&[DisplayPoint::new(1, 1)..DisplayPoint::new(2, 0)], cx);
7501
7502 // indent and outdent affect only the preceding line
7503 view.tab(false, cx);
7504 assert_eq!(view.text(cx), "one two\n three\n four");
7505 assert_eq!(
7506 view.selected_display_ranges(cx),
7507 &[DisplayPoint::new(1, 5)..DisplayPoint::new(2, 0)]
7508 );
7509 view.outdent(&Outdent, cx);
7510 assert_eq!(view.text(cx), "one two\nthree\n four");
7511 assert_eq!(
7512 view.selected_display_ranges(cx),
7513 &[DisplayPoint::new(1, 1)..DisplayPoint::new(2, 0)]
7514 );
7515
7516 // Ensure that indenting/outdenting works when the cursor is at column 0.
7517 view.select_display_ranges(&[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)], cx);
7518 view.tab(false, cx);
7519 assert_eq!(view.text(cx), "one two\n three\n four");
7520 assert_eq!(
7521 view.selected_display_ranges(cx),
7522 &[DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4)]
7523 );
7524
7525 view.select_display_ranges(&[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)], cx);
7526 view.outdent(&Outdent, cx);
7527 assert_eq!(view.text(cx), "one two\nthree\n four");
7528 assert_eq!(
7529 view.selected_display_ranges(cx),
7530 &[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)]
7531 );
7532 });
7533 }
7534
7535 #[gpui::test]
7536 fn test_backspace(cx: &mut gpui::MutableAppContext) {
7537 populate_settings(cx);
7538 let (_, view) = cx.add_window(Default::default(), |cx| {
7539 build_editor(MultiBuffer::build_simple("", cx), cx)
7540 });
7541
7542 view.update(cx, |view, cx| {
7543 view.set_text("one two three\nfour five six\nseven eight nine\nten\n", cx);
7544 view.select_display_ranges(
7545 &[
7546 // an empty selection - the preceding character is deleted
7547 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
7548 // one character selected - it is deleted
7549 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
7550 // a line suffix selected - it is deleted
7551 DisplayPoint::new(2, 6)..DisplayPoint::new(3, 0),
7552 ],
7553 cx,
7554 );
7555 view.backspace(&Backspace, cx);
7556 assert_eq!(view.text(cx), "oe two three\nfou five six\nseven ten\n");
7557
7558 view.set_text(" one\n two\n three\n four", cx);
7559 view.select_display_ranges(
7560 &[
7561 // cursors at the the end of leading indent - last indent is deleted
7562 DisplayPoint::new(0, 4)..DisplayPoint::new(0, 4),
7563 DisplayPoint::new(1, 8)..DisplayPoint::new(1, 8),
7564 // cursors inside leading indent - overlapping indent deletions are coalesced
7565 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 4),
7566 DisplayPoint::new(2, 5)..DisplayPoint::new(2, 5),
7567 DisplayPoint::new(2, 6)..DisplayPoint::new(2, 6),
7568 // cursor at the beginning of a line - preceding newline is deleted
7569 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
7570 // selection inside leading indent - only the selected character is deleted
7571 DisplayPoint::new(3, 2)..DisplayPoint::new(3, 3),
7572 ],
7573 cx,
7574 );
7575 view.backspace(&Backspace, cx);
7576 assert_eq!(view.text(cx), "one\n two\n three four");
7577 });
7578 }
7579
7580 #[gpui::test]
7581 fn test_delete(cx: &mut gpui::MutableAppContext) {
7582 populate_settings(cx);
7583 let buffer =
7584 MultiBuffer::build_simple("one two three\nfour five six\nseven eight nine\nten\n", cx);
7585 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer.clone(), cx));
7586
7587 view.update(cx, |view, cx| {
7588 view.select_display_ranges(
7589 &[
7590 // an empty selection - the following character is deleted
7591 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
7592 // one character selected - it is deleted
7593 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
7594 // a line suffix selected - it is deleted
7595 DisplayPoint::new(2, 6)..DisplayPoint::new(3, 0),
7596 ],
7597 cx,
7598 );
7599 view.delete(&Delete, cx);
7600 });
7601
7602 assert_eq!(
7603 buffer.read(cx).read(cx).text(),
7604 "on two three\nfou five six\nseven ten\n"
7605 );
7606 }
7607
7608 #[gpui::test]
7609 fn test_delete_line(cx: &mut gpui::MutableAppContext) {
7610 populate_settings(cx);
7611 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
7612 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
7613 view.update(cx, |view, cx| {
7614 view.select_display_ranges(
7615 &[
7616 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
7617 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 1),
7618 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
7619 ],
7620 cx,
7621 );
7622 view.delete_line(&DeleteLine, cx);
7623 assert_eq!(view.display_text(cx), "ghi");
7624 assert_eq!(
7625 view.selected_display_ranges(cx),
7626 vec![
7627 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
7628 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1)
7629 ]
7630 );
7631 });
7632
7633 populate_settings(cx);
7634 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
7635 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
7636 view.update(cx, |view, cx| {
7637 view.select_display_ranges(&[DisplayPoint::new(2, 0)..DisplayPoint::new(0, 1)], cx);
7638 view.delete_line(&DeleteLine, cx);
7639 assert_eq!(view.display_text(cx), "ghi\n");
7640 assert_eq!(
7641 view.selected_display_ranges(cx),
7642 vec![DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1)]
7643 );
7644 });
7645 }
7646
7647 #[gpui::test]
7648 fn test_duplicate_line(cx: &mut gpui::MutableAppContext) {
7649 populate_settings(cx);
7650 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
7651 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
7652 view.update(cx, |view, cx| {
7653 view.select_display_ranges(
7654 &[
7655 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
7656 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
7657 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
7658 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
7659 ],
7660 cx,
7661 );
7662 view.duplicate_line(&DuplicateLine, cx);
7663 assert_eq!(view.display_text(cx), "abc\nabc\ndef\ndef\nghi\n\n");
7664 assert_eq!(
7665 view.selected_display_ranges(cx),
7666 vec![
7667 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 1),
7668 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
7669 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
7670 DisplayPoint::new(6, 0)..DisplayPoint::new(6, 0),
7671 ]
7672 );
7673 });
7674
7675 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
7676 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
7677 view.update(cx, |view, cx| {
7678 view.select_display_ranges(
7679 &[
7680 DisplayPoint::new(0, 1)..DisplayPoint::new(1, 1),
7681 DisplayPoint::new(1, 2)..DisplayPoint::new(2, 1),
7682 ],
7683 cx,
7684 );
7685 view.duplicate_line(&DuplicateLine, cx);
7686 assert_eq!(view.display_text(cx), "abc\ndef\nghi\nabc\ndef\nghi\n");
7687 assert_eq!(
7688 view.selected_display_ranges(cx),
7689 vec![
7690 DisplayPoint::new(3, 1)..DisplayPoint::new(4, 1),
7691 DisplayPoint::new(4, 2)..DisplayPoint::new(5, 1),
7692 ]
7693 );
7694 });
7695 }
7696
7697 #[gpui::test]
7698 fn test_move_line_up_down(cx: &mut gpui::MutableAppContext) {
7699 populate_settings(cx);
7700 let buffer = MultiBuffer::build_simple(&sample_text(10, 5, 'a'), cx);
7701 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
7702 view.update(cx, |view, cx| {
7703 view.fold_ranges(
7704 vec![
7705 Point::new(0, 2)..Point::new(1, 2),
7706 Point::new(2, 3)..Point::new(4, 1),
7707 Point::new(7, 0)..Point::new(8, 4),
7708 ],
7709 cx,
7710 );
7711 view.select_display_ranges(
7712 &[
7713 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
7714 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 1),
7715 DisplayPoint::new(3, 2)..DisplayPoint::new(4, 3),
7716 DisplayPoint::new(5, 0)..DisplayPoint::new(5, 2),
7717 ],
7718 cx,
7719 );
7720 assert_eq!(
7721 view.display_text(cx),
7722 "aa…bbb\nccc…eeee\nfffff\nggggg\n…i\njjjjj"
7723 );
7724
7725 view.move_line_up(&MoveLineUp, cx);
7726 assert_eq!(
7727 view.display_text(cx),
7728 "aa…bbb\nccc…eeee\nggggg\n…i\njjjjj\nfffff"
7729 );
7730 assert_eq!(
7731 view.selected_display_ranges(cx),
7732 vec![
7733 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
7734 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
7735 DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3),
7736 DisplayPoint::new(4, 0)..DisplayPoint::new(4, 2)
7737 ]
7738 );
7739 });
7740
7741 view.update(cx, |view, cx| {
7742 view.move_line_down(&MoveLineDown, cx);
7743 assert_eq!(
7744 view.display_text(cx),
7745 "ccc…eeee\naa…bbb\nfffff\nggggg\n…i\njjjjj"
7746 );
7747 assert_eq!(
7748 view.selected_display_ranges(cx),
7749 vec![
7750 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
7751 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 1),
7752 DisplayPoint::new(3, 2)..DisplayPoint::new(4, 3),
7753 DisplayPoint::new(5, 0)..DisplayPoint::new(5, 2)
7754 ]
7755 );
7756 });
7757
7758 view.update(cx, |view, cx| {
7759 view.move_line_down(&MoveLineDown, cx);
7760 assert_eq!(
7761 view.display_text(cx),
7762 "ccc…eeee\nfffff\naa…bbb\nggggg\n…i\njjjjj"
7763 );
7764 assert_eq!(
7765 view.selected_display_ranges(cx),
7766 vec![
7767 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
7768 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 1),
7769 DisplayPoint::new(3, 2)..DisplayPoint::new(4, 3),
7770 DisplayPoint::new(5, 0)..DisplayPoint::new(5, 2)
7771 ]
7772 );
7773 });
7774
7775 view.update(cx, |view, cx| {
7776 view.move_line_up(&MoveLineUp, cx);
7777 assert_eq!(
7778 view.display_text(cx),
7779 "ccc…eeee\naa…bbb\nggggg\n…i\njjjjj\nfffff"
7780 );
7781 assert_eq!(
7782 view.selected_display_ranges(cx),
7783 vec![
7784 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
7785 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
7786 DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3),
7787 DisplayPoint::new(4, 0)..DisplayPoint::new(4, 2)
7788 ]
7789 );
7790 });
7791 }
7792
7793 #[gpui::test]
7794 fn test_move_line_up_down_with_blocks(cx: &mut gpui::MutableAppContext) {
7795 populate_settings(cx);
7796 let buffer = MultiBuffer::build_simple(&sample_text(10, 5, 'a'), cx);
7797 let snapshot = buffer.read(cx).snapshot(cx);
7798 let (_, editor) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
7799 editor.update(cx, |editor, cx| {
7800 editor.insert_blocks(
7801 [BlockProperties {
7802 position: snapshot.anchor_after(Point::new(2, 0)),
7803 disposition: BlockDisposition::Below,
7804 height: 1,
7805 render: Arc::new(|_| Empty::new().boxed()),
7806 }],
7807 cx,
7808 );
7809 editor.select_ranges([Point::new(2, 0)..Point::new(2, 0)], None, cx);
7810 editor.move_line_down(&MoveLineDown, cx);
7811 });
7812 }
7813
7814 #[gpui::test]
7815 fn test_clipboard(cx: &mut gpui::MutableAppContext) {
7816 populate_settings(cx);
7817 let buffer = MultiBuffer::build_simple("one✅ two three four five six ", cx);
7818 let view = cx
7819 .add_window(Default::default(), |cx| build_editor(buffer.clone(), cx))
7820 .1;
7821
7822 // Cut with three selections. Clipboard text is divided into three slices.
7823 view.update(cx, |view, cx| {
7824 view.select_ranges(vec![0..7, 11..17, 22..27], None, cx);
7825 view.cut(&Cut, cx);
7826 assert_eq!(view.display_text(cx), "two four six ");
7827 });
7828
7829 // Paste with three cursors. Each cursor pastes one slice of the clipboard text.
7830 view.update(cx, |view, cx| {
7831 view.select_ranges(vec![4..4, 9..9, 13..13], None, cx);
7832 view.paste(&Paste, cx);
7833 assert_eq!(view.display_text(cx), "two one✅ four three six five ");
7834 assert_eq!(
7835 view.selected_display_ranges(cx),
7836 &[
7837 DisplayPoint::new(0, 11)..DisplayPoint::new(0, 11),
7838 DisplayPoint::new(0, 22)..DisplayPoint::new(0, 22),
7839 DisplayPoint::new(0, 31)..DisplayPoint::new(0, 31)
7840 ]
7841 );
7842 });
7843
7844 // Paste again but with only two cursors. Since the number of cursors doesn't
7845 // match the number of slices in the clipboard, the entire clipboard text
7846 // is pasted at each cursor.
7847 view.update(cx, |view, cx| {
7848 view.select_ranges(vec![0..0, 31..31], None, cx);
7849 view.handle_input(&Input("( ".into()), cx);
7850 view.paste(&Paste, cx);
7851 view.handle_input(&Input(") ".into()), cx);
7852 assert_eq!(
7853 view.display_text(cx),
7854 "( one✅ three five ) two one✅ four three six five ( one✅ three five ) "
7855 );
7856 });
7857
7858 view.update(cx, |view, cx| {
7859 view.select_ranges(vec![0..0], None, cx);
7860 view.handle_input(&Input("123\n4567\n89\n".into()), cx);
7861 assert_eq!(
7862 view.display_text(cx),
7863 "123\n4567\n89\n( one✅ three five ) two one✅ four three six five ( one✅ three five ) "
7864 );
7865 });
7866
7867 // Cut with three selections, one of which is full-line.
7868 view.update(cx, |view, cx| {
7869 view.select_display_ranges(
7870 &[
7871 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 2),
7872 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
7873 DisplayPoint::new(2, 0)..DisplayPoint::new(2, 1),
7874 ],
7875 cx,
7876 );
7877 view.cut(&Cut, cx);
7878 assert_eq!(
7879 view.display_text(cx),
7880 "13\n9\n( one✅ three five ) two one✅ four three six five ( one✅ three five ) "
7881 );
7882 });
7883
7884 // Paste with three selections, noticing how the copied selection that was full-line
7885 // gets inserted before the second cursor.
7886 view.update(cx, |view, cx| {
7887 view.select_display_ranges(
7888 &[
7889 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
7890 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
7891 DisplayPoint::new(2, 2)..DisplayPoint::new(2, 3),
7892 ],
7893 cx,
7894 );
7895 view.paste(&Paste, cx);
7896 assert_eq!(
7897 view.display_text(cx),
7898 "123\n4567\n9\n( 8ne✅ three five ) two one✅ four three six five ( one✅ three five ) "
7899 );
7900 assert_eq!(
7901 view.selected_display_ranges(cx),
7902 &[
7903 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
7904 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
7905 DisplayPoint::new(3, 3)..DisplayPoint::new(3, 3),
7906 ]
7907 );
7908 });
7909
7910 // Copy with a single cursor only, which writes the whole line into the clipboard.
7911 view.update(cx, |view, cx| {
7912 view.select_display_ranges(&[DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1)], cx);
7913 view.copy(&Copy, cx);
7914 });
7915
7916 // Paste with three selections, noticing how the copied full-line selection is inserted
7917 // before the empty selections but replaces the selection that is non-empty.
7918 view.update(cx, |view, cx| {
7919 view.select_display_ranges(
7920 &[
7921 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
7922 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 2),
7923 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
7924 ],
7925 cx,
7926 );
7927 view.paste(&Paste, cx);
7928 assert_eq!(
7929 view.display_text(cx),
7930 "123\n123\n123\n67\n123\n9\n( 8ne✅ three five ) two one✅ four three six five ( one✅ three five ) "
7931 );
7932 assert_eq!(
7933 view.selected_display_ranges(cx),
7934 &[
7935 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
7936 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
7937 DisplayPoint::new(5, 1)..DisplayPoint::new(5, 1),
7938 ]
7939 );
7940 });
7941 }
7942
7943 #[gpui::test]
7944 fn test_select_all(cx: &mut gpui::MutableAppContext) {
7945 populate_settings(cx);
7946 let buffer = MultiBuffer::build_simple("abc\nde\nfgh", cx);
7947 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
7948 view.update(cx, |view, cx| {
7949 view.select_all(&SelectAll, cx);
7950 assert_eq!(
7951 view.selected_display_ranges(cx),
7952 &[DisplayPoint::new(0, 0)..DisplayPoint::new(2, 3)]
7953 );
7954 });
7955 }
7956
7957 #[gpui::test]
7958 fn test_select_line(cx: &mut gpui::MutableAppContext) {
7959 populate_settings(cx);
7960 let buffer = MultiBuffer::build_simple(&sample_text(6, 5, 'a'), cx);
7961 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
7962 view.update(cx, |view, cx| {
7963 view.select_display_ranges(
7964 &[
7965 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
7966 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
7967 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
7968 DisplayPoint::new(4, 2)..DisplayPoint::new(4, 2),
7969 ],
7970 cx,
7971 );
7972 view.select_line(&SelectLine, cx);
7973 assert_eq!(
7974 view.selected_display_ranges(cx),
7975 vec![
7976 DisplayPoint::new(0, 0)..DisplayPoint::new(2, 0),
7977 DisplayPoint::new(4, 0)..DisplayPoint::new(5, 0),
7978 ]
7979 );
7980 });
7981
7982 view.update(cx, |view, cx| {
7983 view.select_line(&SelectLine, cx);
7984 assert_eq!(
7985 view.selected_display_ranges(cx),
7986 vec![
7987 DisplayPoint::new(0, 0)..DisplayPoint::new(3, 0),
7988 DisplayPoint::new(4, 0)..DisplayPoint::new(5, 5),
7989 ]
7990 );
7991 });
7992
7993 view.update(cx, |view, cx| {
7994 view.select_line(&SelectLine, cx);
7995 assert_eq!(
7996 view.selected_display_ranges(cx),
7997 vec![DisplayPoint::new(0, 0)..DisplayPoint::new(5, 5)]
7998 );
7999 });
8000 }
8001
8002 #[gpui::test]
8003 fn test_split_selection_into_lines(cx: &mut gpui::MutableAppContext) {
8004 populate_settings(cx);
8005 let buffer = MultiBuffer::build_simple(&sample_text(9, 5, 'a'), cx);
8006 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
8007 view.update(cx, |view, cx| {
8008 view.fold_ranges(
8009 vec![
8010 Point::new(0, 2)..Point::new(1, 2),
8011 Point::new(2, 3)..Point::new(4, 1),
8012 Point::new(7, 0)..Point::new(8, 4),
8013 ],
8014 cx,
8015 );
8016 view.select_display_ranges(
8017 &[
8018 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
8019 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
8020 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
8021 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 4),
8022 ],
8023 cx,
8024 );
8025 assert_eq!(view.display_text(cx), "aa…bbb\nccc…eeee\nfffff\nggggg\n…i");
8026 });
8027
8028 view.update(cx, |view, cx| {
8029 view.split_selection_into_lines(&SplitSelectionIntoLines, cx);
8030 assert_eq!(
8031 view.display_text(cx),
8032 "aaaaa\nbbbbb\nccc…eeee\nfffff\nggggg\n…i"
8033 );
8034 assert_eq!(
8035 view.selected_display_ranges(cx),
8036 [
8037 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
8038 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
8039 DisplayPoint::new(2, 0)..DisplayPoint::new(2, 0),
8040 DisplayPoint::new(5, 4)..DisplayPoint::new(5, 4)
8041 ]
8042 );
8043 });
8044
8045 view.update(cx, |view, cx| {
8046 view.select_display_ranges(&[DisplayPoint::new(5, 0)..DisplayPoint::new(0, 1)], cx);
8047 view.split_selection_into_lines(&SplitSelectionIntoLines, cx);
8048 assert_eq!(
8049 view.display_text(cx),
8050 "aaaaa\nbbbbb\nccccc\nddddd\neeeee\nfffff\nggggg\nhhhhh\niiiii"
8051 );
8052 assert_eq!(
8053 view.selected_display_ranges(cx),
8054 [
8055 DisplayPoint::new(0, 5)..DisplayPoint::new(0, 5),
8056 DisplayPoint::new(1, 5)..DisplayPoint::new(1, 5),
8057 DisplayPoint::new(2, 5)..DisplayPoint::new(2, 5),
8058 DisplayPoint::new(3, 5)..DisplayPoint::new(3, 5),
8059 DisplayPoint::new(4, 5)..DisplayPoint::new(4, 5),
8060 DisplayPoint::new(5, 5)..DisplayPoint::new(5, 5),
8061 DisplayPoint::new(6, 5)..DisplayPoint::new(6, 5),
8062 DisplayPoint::new(7, 0)..DisplayPoint::new(7, 0)
8063 ]
8064 );
8065 });
8066 }
8067
8068 #[gpui::test]
8069 fn test_add_selection_above_below(cx: &mut gpui::MutableAppContext) {
8070 populate_settings(cx);
8071 let buffer = MultiBuffer::build_simple("abc\ndefghi\n\njk\nlmno\n", cx);
8072 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
8073
8074 view.update(cx, |view, cx| {
8075 view.select_display_ranges(&[DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)], cx);
8076 });
8077 view.update(cx, |view, cx| {
8078 view.add_selection_above(&AddSelectionAbove, cx);
8079 assert_eq!(
8080 view.selected_display_ranges(cx),
8081 vec![
8082 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
8083 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)
8084 ]
8085 );
8086 });
8087
8088 view.update(cx, |view, cx| {
8089 view.add_selection_above(&AddSelectionAbove, cx);
8090 assert_eq!(
8091 view.selected_display_ranges(cx),
8092 vec![
8093 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
8094 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)
8095 ]
8096 );
8097 });
8098
8099 view.update(cx, |view, cx| {
8100 view.add_selection_below(&AddSelectionBelow, cx);
8101 assert_eq!(
8102 view.selected_display_ranges(cx),
8103 vec![DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)]
8104 );
8105 });
8106
8107 view.update(cx, |view, cx| {
8108 view.add_selection_below(&AddSelectionBelow, cx);
8109 assert_eq!(
8110 view.selected_display_ranges(cx),
8111 vec![
8112 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3),
8113 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 3)
8114 ]
8115 );
8116 });
8117
8118 view.update(cx, |view, cx| {
8119 view.add_selection_below(&AddSelectionBelow, cx);
8120 assert_eq!(
8121 view.selected_display_ranges(cx),
8122 vec![
8123 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3),
8124 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 3)
8125 ]
8126 );
8127 });
8128
8129 view.update(cx, |view, cx| {
8130 view.select_display_ranges(&[DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3)], cx);
8131 });
8132 view.update(cx, |view, cx| {
8133 view.add_selection_below(&AddSelectionBelow, cx);
8134 assert_eq!(
8135 view.selected_display_ranges(cx),
8136 vec![
8137 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
8138 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 3)
8139 ]
8140 );
8141 });
8142
8143 view.update(cx, |view, cx| {
8144 view.add_selection_below(&AddSelectionBelow, cx);
8145 assert_eq!(
8146 view.selected_display_ranges(cx),
8147 vec![
8148 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
8149 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 3)
8150 ]
8151 );
8152 });
8153
8154 view.update(cx, |view, cx| {
8155 view.add_selection_above(&AddSelectionAbove, cx);
8156 assert_eq!(
8157 view.selected_display_ranges(cx),
8158 vec![DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3)]
8159 );
8160 });
8161
8162 view.update(cx, |view, cx| {
8163 view.add_selection_above(&AddSelectionAbove, cx);
8164 assert_eq!(
8165 view.selected_display_ranges(cx),
8166 vec![DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3)]
8167 );
8168 });
8169
8170 view.update(cx, |view, cx| {
8171 view.select_display_ranges(&[DisplayPoint::new(0, 1)..DisplayPoint::new(1, 4)], cx);
8172 view.add_selection_below(&AddSelectionBelow, cx);
8173 assert_eq!(
8174 view.selected_display_ranges(cx),
8175 vec![
8176 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
8177 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 4),
8178 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 2),
8179 ]
8180 );
8181 });
8182
8183 view.update(cx, |view, cx| {
8184 view.add_selection_below(&AddSelectionBelow, cx);
8185 assert_eq!(
8186 view.selected_display_ranges(cx),
8187 vec![
8188 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
8189 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 4),
8190 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 2),
8191 DisplayPoint::new(4, 1)..DisplayPoint::new(4, 4),
8192 ]
8193 );
8194 });
8195
8196 view.update(cx, |view, cx| {
8197 view.add_selection_above(&AddSelectionAbove, cx);
8198 assert_eq!(
8199 view.selected_display_ranges(cx),
8200 vec![
8201 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
8202 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 4),
8203 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 2),
8204 ]
8205 );
8206 });
8207
8208 view.update(cx, |view, cx| {
8209 view.select_display_ranges(&[DisplayPoint::new(4, 3)..DisplayPoint::new(1, 1)], cx);
8210 });
8211 view.update(cx, |view, cx| {
8212 view.add_selection_above(&AddSelectionAbove, cx);
8213 assert_eq!(
8214 view.selected_display_ranges(cx),
8215 vec![
8216 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 1),
8217 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 1),
8218 DisplayPoint::new(3, 2)..DisplayPoint::new(3, 1),
8219 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 1),
8220 ]
8221 );
8222 });
8223
8224 view.update(cx, |view, cx| {
8225 view.add_selection_below(&AddSelectionBelow, cx);
8226 assert_eq!(
8227 view.selected_display_ranges(cx),
8228 vec![
8229 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 1),
8230 DisplayPoint::new(3, 2)..DisplayPoint::new(3, 1),
8231 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 1),
8232 ]
8233 );
8234 });
8235 }
8236
8237 #[gpui::test]
8238 async fn test_select_larger_smaller_syntax_node(cx: &mut gpui::TestAppContext) {
8239 cx.update(populate_settings);
8240 let language = Arc::new(Language::new(
8241 LanguageConfig::default(),
8242 Some(tree_sitter_rust::language()),
8243 ));
8244
8245 let text = r#"
8246 use mod1::mod2::{mod3, mod4};
8247
8248 fn fn_1(param1: bool, param2: &str) {
8249 let var1 = "text";
8250 }
8251 "#
8252 .unindent();
8253
8254 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
8255 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
8256 let (_, view) = cx.add_window(|cx| build_editor(buffer, cx));
8257 view.condition(&cx, |view, cx| !view.buffer.read(cx).is_parsing(cx))
8258 .await;
8259
8260 view.update(cx, |view, cx| {
8261 view.select_display_ranges(
8262 &[
8263 DisplayPoint::new(0, 25)..DisplayPoint::new(0, 25),
8264 DisplayPoint::new(2, 24)..DisplayPoint::new(2, 12),
8265 DisplayPoint::new(3, 18)..DisplayPoint::new(3, 18),
8266 ],
8267 cx,
8268 );
8269 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
8270 });
8271 assert_eq!(
8272 view.update(cx, |view, cx| view.selected_display_ranges(cx)),
8273 &[
8274 DisplayPoint::new(0, 23)..DisplayPoint::new(0, 27),
8275 DisplayPoint::new(2, 35)..DisplayPoint::new(2, 7),
8276 DisplayPoint::new(3, 15)..DisplayPoint::new(3, 21),
8277 ]
8278 );
8279
8280 view.update(cx, |view, cx| {
8281 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
8282 });
8283 assert_eq!(
8284 view.update(cx, |view, cx| view.selected_display_ranges(cx)),
8285 &[
8286 DisplayPoint::new(0, 16)..DisplayPoint::new(0, 28),
8287 DisplayPoint::new(4, 1)..DisplayPoint::new(2, 0),
8288 ]
8289 );
8290
8291 view.update(cx, |view, cx| {
8292 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
8293 });
8294 assert_eq!(
8295 view.update(cx, |view, cx| view.selected_display_ranges(cx)),
8296 &[DisplayPoint::new(5, 0)..DisplayPoint::new(0, 0)]
8297 );
8298
8299 // Trying to expand the selected syntax node one more time has no effect.
8300 view.update(cx, |view, cx| {
8301 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
8302 });
8303 assert_eq!(
8304 view.update(cx, |view, cx| view.selected_display_ranges(cx)),
8305 &[DisplayPoint::new(5, 0)..DisplayPoint::new(0, 0)]
8306 );
8307
8308 view.update(cx, |view, cx| {
8309 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
8310 });
8311 assert_eq!(
8312 view.update(cx, |view, cx| view.selected_display_ranges(cx)),
8313 &[
8314 DisplayPoint::new(0, 16)..DisplayPoint::new(0, 28),
8315 DisplayPoint::new(4, 1)..DisplayPoint::new(2, 0),
8316 ]
8317 );
8318
8319 view.update(cx, |view, cx| {
8320 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
8321 });
8322 assert_eq!(
8323 view.update(cx, |view, cx| view.selected_display_ranges(cx)),
8324 &[
8325 DisplayPoint::new(0, 23)..DisplayPoint::new(0, 27),
8326 DisplayPoint::new(2, 35)..DisplayPoint::new(2, 7),
8327 DisplayPoint::new(3, 15)..DisplayPoint::new(3, 21),
8328 ]
8329 );
8330
8331 view.update(cx, |view, cx| {
8332 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
8333 });
8334 assert_eq!(
8335 view.update(cx, |view, cx| view.selected_display_ranges(cx)),
8336 &[
8337 DisplayPoint::new(0, 25)..DisplayPoint::new(0, 25),
8338 DisplayPoint::new(2, 24)..DisplayPoint::new(2, 12),
8339 DisplayPoint::new(3, 18)..DisplayPoint::new(3, 18),
8340 ]
8341 );
8342
8343 // Trying to shrink the selected syntax node one more time has no effect.
8344 view.update(cx, |view, cx| {
8345 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
8346 });
8347 assert_eq!(
8348 view.update(cx, |view, cx| view.selected_display_ranges(cx)),
8349 &[
8350 DisplayPoint::new(0, 25)..DisplayPoint::new(0, 25),
8351 DisplayPoint::new(2, 24)..DisplayPoint::new(2, 12),
8352 DisplayPoint::new(3, 18)..DisplayPoint::new(3, 18),
8353 ]
8354 );
8355
8356 // Ensure that we keep expanding the selection if the larger selection starts or ends within
8357 // a fold.
8358 view.update(cx, |view, cx| {
8359 view.fold_ranges(
8360 vec![
8361 Point::new(0, 21)..Point::new(0, 24),
8362 Point::new(3, 20)..Point::new(3, 22),
8363 ],
8364 cx,
8365 );
8366 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
8367 });
8368 assert_eq!(
8369 view.update(cx, |view, cx| view.selected_display_ranges(cx)),
8370 &[
8371 DisplayPoint::new(0, 16)..DisplayPoint::new(0, 28),
8372 DisplayPoint::new(2, 35)..DisplayPoint::new(2, 7),
8373 DisplayPoint::new(3, 4)..DisplayPoint::new(3, 23),
8374 ]
8375 );
8376 }
8377
8378 #[gpui::test]
8379 async fn test_autoindent_selections(cx: &mut gpui::TestAppContext) {
8380 cx.update(populate_settings);
8381 let language = Arc::new(
8382 Language::new(
8383 LanguageConfig {
8384 brackets: vec![
8385 BracketPair {
8386 start: "{".to_string(),
8387 end: "}".to_string(),
8388 close: false,
8389 newline: true,
8390 },
8391 BracketPair {
8392 start: "(".to_string(),
8393 end: ")".to_string(),
8394 close: false,
8395 newline: true,
8396 },
8397 ],
8398 ..Default::default()
8399 },
8400 Some(tree_sitter_rust::language()),
8401 )
8402 .with_indents_query(
8403 r#"
8404 (_ "(" ")" @end) @indent
8405 (_ "{" "}" @end) @indent
8406 "#,
8407 )
8408 .unwrap(),
8409 );
8410
8411 let text = "fn a() {}";
8412
8413 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
8414 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
8415 let (_, editor) = cx.add_window(|cx| build_editor(buffer, cx));
8416 editor
8417 .condition(&cx, |editor, cx| !editor.buffer.read(cx).is_parsing(cx))
8418 .await;
8419
8420 editor.update(cx, |editor, cx| {
8421 editor.select_ranges([5..5, 8..8, 9..9], None, cx);
8422 editor.newline(&Newline, cx);
8423 assert_eq!(editor.text(cx), "fn a(\n \n) {\n \n}\n");
8424 assert_eq!(
8425 editor.selected_ranges(cx),
8426 &[
8427 Point::new(1, 4)..Point::new(1, 4),
8428 Point::new(3, 4)..Point::new(3, 4),
8429 Point::new(5, 0)..Point::new(5, 0)
8430 ]
8431 );
8432 });
8433 }
8434
8435 #[gpui::test]
8436 async fn test_autoclose_pairs(cx: &mut gpui::TestAppContext) {
8437 cx.update(populate_settings);
8438 let language = Arc::new(Language::new(
8439 LanguageConfig {
8440 brackets: vec![
8441 BracketPair {
8442 start: "{".to_string(),
8443 end: "}".to_string(),
8444 close: true,
8445 newline: true,
8446 },
8447 BracketPair {
8448 start: "/*".to_string(),
8449 end: " */".to_string(),
8450 close: true,
8451 newline: true,
8452 },
8453 ],
8454 autoclose_before: "})]".to_string(),
8455 ..Default::default()
8456 },
8457 Some(tree_sitter_rust::language()),
8458 ));
8459
8460 let text = r#"
8461 a
8462
8463 /
8464
8465 "#
8466 .unindent();
8467
8468 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
8469 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
8470 let (_, view) = cx.add_window(|cx| build_editor(buffer, cx));
8471 view.condition(&cx, |view, cx| !view.buffer.read(cx).is_parsing(cx))
8472 .await;
8473
8474 view.update(cx, |view, cx| {
8475 view.select_display_ranges(
8476 &[
8477 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
8478 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
8479 ],
8480 cx,
8481 );
8482
8483 view.handle_input(&Input("{".to_string()), cx);
8484 view.handle_input(&Input("{".to_string()), cx);
8485 view.handle_input(&Input("{".to_string()), cx);
8486 assert_eq!(
8487 view.text(cx),
8488 "
8489 {{{}}}
8490 {{{}}}
8491 /
8492
8493 "
8494 .unindent()
8495 );
8496
8497 view.move_right(&MoveRight, cx);
8498 view.handle_input(&Input("}".to_string()), cx);
8499 view.handle_input(&Input("}".to_string()), cx);
8500 view.handle_input(&Input("}".to_string()), cx);
8501 assert_eq!(
8502 view.text(cx),
8503 "
8504 {{{}}}}
8505 {{{}}}}
8506 /
8507
8508 "
8509 .unindent()
8510 );
8511
8512 view.undo(&Undo, cx);
8513 view.handle_input(&Input("/".to_string()), cx);
8514 view.handle_input(&Input("*".to_string()), cx);
8515 assert_eq!(
8516 view.text(cx),
8517 "
8518 /* */
8519 /* */
8520 /
8521
8522 "
8523 .unindent()
8524 );
8525
8526 view.undo(&Undo, cx);
8527 view.select_display_ranges(
8528 &[
8529 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
8530 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
8531 ],
8532 cx,
8533 );
8534 view.handle_input(&Input("*".to_string()), cx);
8535 assert_eq!(
8536 view.text(cx),
8537 "
8538 a
8539
8540 /*
8541 *
8542 "
8543 .unindent()
8544 );
8545
8546 // Don't autoclose if the next character isn't whitespace and isn't
8547 // listed in the language's "autoclose_before" section.
8548 view.finalize_last_transaction(cx);
8549 view.select_display_ranges(&[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)], cx);
8550 view.handle_input(&Input("{".to_string()), cx);
8551 assert_eq!(
8552 view.text(cx),
8553 "
8554 {a
8555
8556 /*
8557 *
8558 "
8559 .unindent()
8560 );
8561
8562 view.undo(&Undo, cx);
8563 view.select_display_ranges(&[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1)], cx);
8564 view.handle_input(&Input("{".to_string()), cx);
8565 assert_eq!(
8566 view.text(cx),
8567 "
8568 {a}
8569
8570 /*
8571 *
8572 "
8573 .unindent()
8574 );
8575 assert_eq!(
8576 view.selected_display_ranges(cx),
8577 [DisplayPoint::new(0, 1)..DisplayPoint::new(0, 2)]
8578 );
8579 });
8580 }
8581
8582 #[gpui::test]
8583 async fn test_snippets(cx: &mut gpui::TestAppContext) {
8584 cx.update(populate_settings);
8585
8586 let text = "
8587 a. b
8588 a. b
8589 a. b
8590 "
8591 .unindent();
8592 let buffer = cx.update(|cx| MultiBuffer::build_simple(&text, cx));
8593 let (_, editor) = cx.add_window(|cx| build_editor(buffer, cx));
8594
8595 editor.update(cx, |editor, cx| {
8596 let buffer = &editor.snapshot(cx).buffer_snapshot;
8597 let snippet = Snippet::parse("f(${1:one}, ${2:two}, ${1:three})$0").unwrap();
8598 let insertion_ranges = [
8599 Point::new(0, 2).to_offset(buffer)..Point::new(0, 2).to_offset(buffer),
8600 Point::new(1, 2).to_offset(buffer)..Point::new(1, 2).to_offset(buffer),
8601 Point::new(2, 2).to_offset(buffer)..Point::new(2, 2).to_offset(buffer),
8602 ];
8603
8604 editor
8605 .insert_snippet(&insertion_ranges, snippet, cx)
8606 .unwrap();
8607 assert_eq!(
8608 editor.text(cx),
8609 "
8610 a.f(one, two, three) b
8611 a.f(one, two, three) b
8612 a.f(one, two, three) b
8613 "
8614 .unindent()
8615 );
8616 assert_eq!(
8617 editor.selected_ranges::<Point>(cx),
8618 &[
8619 Point::new(0, 4)..Point::new(0, 7),
8620 Point::new(0, 14)..Point::new(0, 19),
8621 Point::new(1, 4)..Point::new(1, 7),
8622 Point::new(1, 14)..Point::new(1, 19),
8623 Point::new(2, 4)..Point::new(2, 7),
8624 Point::new(2, 14)..Point::new(2, 19),
8625 ]
8626 );
8627
8628 // Can't move earlier than the first tab stop
8629 editor.move_to_prev_snippet_tabstop(cx);
8630 assert_eq!(
8631 editor.selected_ranges::<Point>(cx),
8632 &[
8633 Point::new(0, 4)..Point::new(0, 7),
8634 Point::new(0, 14)..Point::new(0, 19),
8635 Point::new(1, 4)..Point::new(1, 7),
8636 Point::new(1, 14)..Point::new(1, 19),
8637 Point::new(2, 4)..Point::new(2, 7),
8638 Point::new(2, 14)..Point::new(2, 19),
8639 ]
8640 );
8641
8642 assert!(editor.move_to_next_snippet_tabstop(cx));
8643 assert_eq!(
8644 editor.selected_ranges::<Point>(cx),
8645 &[
8646 Point::new(0, 9)..Point::new(0, 12),
8647 Point::new(1, 9)..Point::new(1, 12),
8648 Point::new(2, 9)..Point::new(2, 12)
8649 ]
8650 );
8651
8652 editor.move_to_prev_snippet_tabstop(cx);
8653 assert_eq!(
8654 editor.selected_ranges::<Point>(cx),
8655 &[
8656 Point::new(0, 4)..Point::new(0, 7),
8657 Point::new(0, 14)..Point::new(0, 19),
8658 Point::new(1, 4)..Point::new(1, 7),
8659 Point::new(1, 14)..Point::new(1, 19),
8660 Point::new(2, 4)..Point::new(2, 7),
8661 Point::new(2, 14)..Point::new(2, 19),
8662 ]
8663 );
8664
8665 assert!(editor.move_to_next_snippet_tabstop(cx));
8666 assert!(editor.move_to_next_snippet_tabstop(cx));
8667 assert_eq!(
8668 editor.selected_ranges::<Point>(cx),
8669 &[
8670 Point::new(0, 20)..Point::new(0, 20),
8671 Point::new(1, 20)..Point::new(1, 20),
8672 Point::new(2, 20)..Point::new(2, 20)
8673 ]
8674 );
8675
8676 // As soon as the last tab stop is reached, snippet state is gone
8677 editor.move_to_prev_snippet_tabstop(cx);
8678 assert_eq!(
8679 editor.selected_ranges::<Point>(cx),
8680 &[
8681 Point::new(0, 20)..Point::new(0, 20),
8682 Point::new(1, 20)..Point::new(1, 20),
8683 Point::new(2, 20)..Point::new(2, 20)
8684 ]
8685 );
8686 });
8687 }
8688
8689 #[gpui::test]
8690 async fn test_completion(cx: &mut gpui::TestAppContext) {
8691 cx.update(populate_settings);
8692
8693 let (mut language_server_config, mut fake_servers) = LanguageServerConfig::fake();
8694 language_server_config.set_fake_capabilities(lsp::ServerCapabilities {
8695 completion_provider: Some(lsp::CompletionOptions {
8696 trigger_characters: Some(vec![".".to_string(), ":".to_string()]),
8697 ..Default::default()
8698 }),
8699 ..Default::default()
8700 });
8701 let language = Arc::new(Language::new(
8702 LanguageConfig {
8703 name: "Rust".into(),
8704 path_suffixes: vec!["rs".to_string()],
8705 language_server: Some(language_server_config),
8706 ..Default::default()
8707 },
8708 Some(tree_sitter_rust::language()),
8709 ));
8710
8711 let text = "
8712 one
8713 two
8714 three
8715 "
8716 .unindent();
8717
8718 let fs = FakeFs::new(cx.background().clone());
8719 fs.insert_file("/file.rs", text).await;
8720
8721 let project = Project::test(fs, cx);
8722 project.update(cx, |project, _| project.languages().add(language));
8723
8724 let worktree_id = project
8725 .update(cx, |project, cx| {
8726 project.find_or_create_local_worktree("/file.rs", true, cx)
8727 })
8728 .await
8729 .unwrap()
8730 .0
8731 .read_with(cx, |tree, _| tree.id());
8732 let buffer = project
8733 .update(cx, |project, cx| project.open_buffer((worktree_id, ""), cx))
8734 .await
8735 .unwrap();
8736 let mut fake_server = fake_servers.next().await.unwrap();
8737
8738 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
8739 let (_, editor) = cx.add_window(|cx| build_editor(buffer, cx));
8740
8741 editor.update(cx, |editor, cx| {
8742 editor.project = Some(project);
8743 editor.select_ranges([Point::new(0, 3)..Point::new(0, 3)], None, cx);
8744 editor.handle_input(&Input(".".to_string()), cx);
8745 });
8746
8747 handle_completion_request(
8748 &mut fake_server,
8749 "/file.rs",
8750 Point::new(0, 4),
8751 vec![
8752 (Point::new(0, 4)..Point::new(0, 4), "first_completion"),
8753 (Point::new(0, 4)..Point::new(0, 4), "second_completion"),
8754 ],
8755 )
8756 .await;
8757 editor
8758 .condition(&cx, |editor, _| editor.context_menu_visible())
8759 .await;
8760
8761 let apply_additional_edits = editor.update(cx, |editor, cx| {
8762 editor.move_down(&MoveDown, cx);
8763 let apply_additional_edits = editor
8764 .confirm_completion(&ConfirmCompletion(None), cx)
8765 .unwrap();
8766 assert_eq!(
8767 editor.text(cx),
8768 "
8769 one.second_completion
8770 two
8771 three
8772 "
8773 .unindent()
8774 );
8775 apply_additional_edits
8776 });
8777
8778 handle_resolve_completion_request(
8779 &mut fake_server,
8780 Some((Point::new(2, 5)..Point::new(2, 5), "\nadditional edit")),
8781 )
8782 .await;
8783 apply_additional_edits.await.unwrap();
8784 assert_eq!(
8785 editor.read_with(cx, |editor, cx| editor.text(cx)),
8786 "
8787 one.second_completion
8788 two
8789 three
8790 additional edit
8791 "
8792 .unindent()
8793 );
8794
8795 editor.update(cx, |editor, cx| {
8796 editor.select_ranges(
8797 [
8798 Point::new(1, 3)..Point::new(1, 3),
8799 Point::new(2, 5)..Point::new(2, 5),
8800 ],
8801 None,
8802 cx,
8803 );
8804
8805 editor.handle_input(&Input(" ".to_string()), cx);
8806 assert!(editor.context_menu.is_none());
8807 editor.handle_input(&Input("s".to_string()), cx);
8808 assert!(editor.context_menu.is_none());
8809 });
8810
8811 handle_completion_request(
8812 &mut fake_server,
8813 "/file.rs",
8814 Point::new(2, 7),
8815 vec![
8816 (Point::new(2, 6)..Point::new(2, 7), "fourth_completion"),
8817 (Point::new(2, 6)..Point::new(2, 7), "fifth_completion"),
8818 (Point::new(2, 6)..Point::new(2, 7), "sixth_completion"),
8819 ],
8820 )
8821 .await;
8822 editor
8823 .condition(&cx, |editor, _| editor.context_menu_visible())
8824 .await;
8825
8826 editor.update(cx, |editor, cx| {
8827 editor.handle_input(&Input("i".to_string()), cx);
8828 });
8829
8830 handle_completion_request(
8831 &mut fake_server,
8832 "/file.rs",
8833 Point::new(2, 8),
8834 vec![
8835 (Point::new(2, 6)..Point::new(2, 8), "fourth_completion"),
8836 (Point::new(2, 6)..Point::new(2, 8), "fifth_completion"),
8837 (Point::new(2, 6)..Point::new(2, 8), "sixth_completion"),
8838 ],
8839 )
8840 .await;
8841 editor
8842 .condition(&cx, |editor, _| editor.context_menu_visible())
8843 .await;
8844
8845 let apply_additional_edits = editor.update(cx, |editor, cx| {
8846 let apply_additional_edits = editor
8847 .confirm_completion(&ConfirmCompletion(None), cx)
8848 .unwrap();
8849 assert_eq!(
8850 editor.text(cx),
8851 "
8852 one.second_completion
8853 two sixth_completion
8854 three sixth_completion
8855 additional edit
8856 "
8857 .unindent()
8858 );
8859 apply_additional_edits
8860 });
8861 handle_resolve_completion_request(&mut fake_server, None).await;
8862 apply_additional_edits.await.unwrap();
8863
8864 async fn handle_completion_request(
8865 fake: &mut FakeLanguageServer,
8866 path: &'static str,
8867 position: Point,
8868 completions: Vec<(Range<Point>, &'static str)>,
8869 ) {
8870 fake.handle_request::<lsp::request::Completion, _>(move |params, _| {
8871 assert_eq!(
8872 params.text_document_position.text_document.uri,
8873 lsp::Url::from_file_path(path).unwrap()
8874 );
8875 assert_eq!(
8876 params.text_document_position.position,
8877 lsp::Position::new(position.row, position.column)
8878 );
8879 Some(lsp::CompletionResponse::Array(
8880 completions
8881 .iter()
8882 .map(|(range, new_text)| lsp::CompletionItem {
8883 label: new_text.to_string(),
8884 text_edit: Some(lsp::CompletionTextEdit::Edit(lsp::TextEdit {
8885 range: lsp::Range::new(
8886 lsp::Position::new(range.start.row, range.start.column),
8887 lsp::Position::new(range.start.row, range.start.column),
8888 ),
8889 new_text: new_text.to_string(),
8890 })),
8891 ..Default::default()
8892 })
8893 .collect(),
8894 ))
8895 })
8896 .next()
8897 .await;
8898 }
8899
8900 async fn handle_resolve_completion_request(
8901 fake: &mut FakeLanguageServer,
8902 edit: Option<(Range<Point>, &'static str)>,
8903 ) {
8904 fake.handle_request::<lsp::request::ResolveCompletionItem, _>(move |_, _| {
8905 lsp::CompletionItem {
8906 additional_text_edits: edit.clone().map(|(range, new_text)| {
8907 vec![lsp::TextEdit::new(
8908 lsp::Range::new(
8909 lsp::Position::new(range.start.row, range.start.column),
8910 lsp::Position::new(range.end.row, range.end.column),
8911 ),
8912 new_text.to_string(),
8913 )]
8914 }),
8915 ..Default::default()
8916 }
8917 })
8918 .next()
8919 .await;
8920 }
8921 }
8922
8923 #[gpui::test]
8924 async fn test_toggle_comment(cx: &mut gpui::TestAppContext) {
8925 cx.update(populate_settings);
8926 let language = Arc::new(Language::new(
8927 LanguageConfig {
8928 line_comment: Some("// ".to_string()),
8929 ..Default::default()
8930 },
8931 Some(tree_sitter_rust::language()),
8932 ));
8933
8934 let text = "
8935 fn a() {
8936 //b();
8937 // c();
8938 // d();
8939 }
8940 "
8941 .unindent();
8942
8943 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
8944 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
8945 let (_, view) = cx.add_window(|cx| build_editor(buffer, cx));
8946
8947 view.update(cx, |editor, cx| {
8948 // If multiple selections intersect a line, the line is only
8949 // toggled once.
8950 editor.select_display_ranges(
8951 &[
8952 DisplayPoint::new(1, 3)..DisplayPoint::new(2, 3),
8953 DisplayPoint::new(3, 5)..DisplayPoint::new(3, 6),
8954 ],
8955 cx,
8956 );
8957 editor.toggle_comments(&ToggleComments, cx);
8958 assert_eq!(
8959 editor.text(cx),
8960 "
8961 fn a() {
8962 b();
8963 c();
8964 d();
8965 }
8966 "
8967 .unindent()
8968 );
8969
8970 // The comment prefix is inserted at the same column for every line
8971 // in a selection.
8972 editor.select_display_ranges(&[DisplayPoint::new(1, 3)..DisplayPoint::new(3, 6)], cx);
8973 editor.toggle_comments(&ToggleComments, cx);
8974 assert_eq!(
8975 editor.text(cx),
8976 "
8977 fn a() {
8978 // b();
8979 // c();
8980 // d();
8981 }
8982 "
8983 .unindent()
8984 );
8985
8986 // If a selection ends at the beginning of a line, that line is not toggled.
8987 editor.select_display_ranges(&[DisplayPoint::new(2, 0)..DisplayPoint::new(3, 0)], cx);
8988 editor.toggle_comments(&ToggleComments, cx);
8989 assert_eq!(
8990 editor.text(cx),
8991 "
8992 fn a() {
8993 // b();
8994 c();
8995 // d();
8996 }
8997 "
8998 .unindent()
8999 );
9000 });
9001 }
9002
9003 #[gpui::test]
9004 fn test_editing_disjoint_excerpts(cx: &mut gpui::MutableAppContext) {
9005 populate_settings(cx);
9006 let buffer = cx.add_model(|cx| Buffer::new(0, sample_text(3, 4, 'a'), cx));
9007 let multibuffer = cx.add_model(|cx| {
9008 let mut multibuffer = MultiBuffer::new(0);
9009 multibuffer.push_excerpts(
9010 buffer.clone(),
9011 [
9012 Point::new(0, 0)..Point::new(0, 4),
9013 Point::new(1, 0)..Point::new(1, 4),
9014 ],
9015 cx,
9016 );
9017 multibuffer
9018 });
9019
9020 assert_eq!(multibuffer.read(cx).read(cx).text(), "aaaa\nbbbb");
9021
9022 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(multibuffer, cx));
9023 view.update(cx, |view, cx| {
9024 assert_eq!(view.text(cx), "aaaa\nbbbb");
9025 view.select_ranges(
9026 [
9027 Point::new(0, 0)..Point::new(0, 0),
9028 Point::new(1, 0)..Point::new(1, 0),
9029 ],
9030 None,
9031 cx,
9032 );
9033
9034 view.handle_input(&Input("X".to_string()), cx);
9035 assert_eq!(view.text(cx), "Xaaaa\nXbbbb");
9036 assert_eq!(
9037 view.selected_ranges(cx),
9038 [
9039 Point::new(0, 1)..Point::new(0, 1),
9040 Point::new(1, 1)..Point::new(1, 1),
9041 ]
9042 )
9043 });
9044 }
9045
9046 #[gpui::test]
9047 fn test_editing_overlapping_excerpts(cx: &mut gpui::MutableAppContext) {
9048 populate_settings(cx);
9049 let buffer = cx.add_model(|cx| Buffer::new(0, sample_text(3, 4, 'a'), cx));
9050 let multibuffer = cx.add_model(|cx| {
9051 let mut multibuffer = MultiBuffer::new(0);
9052 multibuffer.push_excerpts(
9053 buffer,
9054 [
9055 Point::new(0, 0)..Point::new(1, 4),
9056 Point::new(1, 0)..Point::new(2, 4),
9057 ],
9058 cx,
9059 );
9060 multibuffer
9061 });
9062
9063 assert_eq!(
9064 multibuffer.read(cx).read(cx).text(),
9065 "aaaa\nbbbb\nbbbb\ncccc"
9066 );
9067
9068 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(multibuffer, cx));
9069 view.update(cx, |view, cx| {
9070 view.select_ranges(
9071 [
9072 Point::new(1, 1)..Point::new(1, 1),
9073 Point::new(2, 3)..Point::new(2, 3),
9074 ],
9075 None,
9076 cx,
9077 );
9078
9079 view.handle_input(&Input("X".to_string()), cx);
9080 assert_eq!(view.text(cx), "aaaa\nbXbbXb\nbXbbXb\ncccc");
9081 assert_eq!(
9082 view.selected_ranges(cx),
9083 [
9084 Point::new(1, 2)..Point::new(1, 2),
9085 Point::new(2, 5)..Point::new(2, 5),
9086 ]
9087 );
9088
9089 view.newline(&Newline, cx);
9090 assert_eq!(view.text(cx), "aaaa\nbX\nbbX\nb\nbX\nbbX\nb\ncccc");
9091 assert_eq!(
9092 view.selected_ranges(cx),
9093 [
9094 Point::new(2, 0)..Point::new(2, 0),
9095 Point::new(6, 0)..Point::new(6, 0),
9096 ]
9097 );
9098 });
9099 }
9100
9101 #[gpui::test]
9102 fn test_refresh_selections(cx: &mut gpui::MutableAppContext) {
9103 populate_settings(cx);
9104 let buffer = cx.add_model(|cx| Buffer::new(0, sample_text(3, 4, 'a'), cx));
9105 let mut excerpt1_id = None;
9106 let multibuffer = cx.add_model(|cx| {
9107 let mut multibuffer = MultiBuffer::new(0);
9108 excerpt1_id = multibuffer
9109 .push_excerpts(
9110 buffer.clone(),
9111 [
9112 Point::new(0, 0)..Point::new(1, 4),
9113 Point::new(1, 0)..Point::new(2, 4),
9114 ],
9115 cx,
9116 )
9117 .into_iter()
9118 .next();
9119 multibuffer
9120 });
9121 assert_eq!(
9122 multibuffer.read(cx).read(cx).text(),
9123 "aaaa\nbbbb\nbbbb\ncccc"
9124 );
9125 let (_, editor) = cx.add_window(Default::default(), |cx| {
9126 let mut editor = build_editor(multibuffer.clone(), cx);
9127 let snapshot = editor.snapshot(cx);
9128 editor.select_ranges([Point::new(1, 3)..Point::new(1, 3)], None, cx);
9129 editor.begin_selection(Point::new(2, 1).to_display_point(&snapshot), true, 1, cx);
9130 assert_eq!(
9131 editor.selected_ranges(cx),
9132 [
9133 Point::new(1, 3)..Point::new(1, 3),
9134 Point::new(2, 1)..Point::new(2, 1),
9135 ]
9136 );
9137 editor
9138 });
9139
9140 // Refreshing selections is a no-op when excerpts haven't changed.
9141 editor.update(cx, |editor, cx| {
9142 editor.refresh_selections(cx);
9143 assert_eq!(
9144 editor.selected_ranges(cx),
9145 [
9146 Point::new(1, 3)..Point::new(1, 3),
9147 Point::new(2, 1)..Point::new(2, 1),
9148 ]
9149 );
9150 });
9151
9152 multibuffer.update(cx, |multibuffer, cx| {
9153 multibuffer.remove_excerpts([&excerpt1_id.unwrap()], cx);
9154 });
9155 editor.update(cx, |editor, cx| {
9156 // Removing an excerpt causes the first selection to become degenerate.
9157 assert_eq!(
9158 editor.selected_ranges(cx),
9159 [
9160 Point::new(0, 0)..Point::new(0, 0),
9161 Point::new(0, 1)..Point::new(0, 1)
9162 ]
9163 );
9164
9165 // Refreshing selections will relocate the first selection to the original buffer
9166 // location.
9167 editor.refresh_selections(cx);
9168 assert_eq!(
9169 editor.selected_ranges(cx),
9170 [
9171 Point::new(0, 1)..Point::new(0, 1),
9172 Point::new(0, 3)..Point::new(0, 3)
9173 ]
9174 );
9175 assert!(editor.pending_selection.is_some());
9176 });
9177 }
9178
9179 #[gpui::test]
9180 fn test_refresh_selections_while_selecting_with_mouse(cx: &mut gpui::MutableAppContext) {
9181 populate_settings(cx);
9182 let buffer = cx.add_model(|cx| Buffer::new(0, sample_text(3, 4, 'a'), cx));
9183 let mut excerpt1_id = None;
9184 let multibuffer = cx.add_model(|cx| {
9185 let mut multibuffer = MultiBuffer::new(0);
9186 excerpt1_id = multibuffer
9187 .push_excerpts(
9188 buffer.clone(),
9189 [
9190 Point::new(0, 0)..Point::new(1, 4),
9191 Point::new(1, 0)..Point::new(2, 4),
9192 ],
9193 cx,
9194 )
9195 .into_iter()
9196 .next();
9197 multibuffer
9198 });
9199 assert_eq!(
9200 multibuffer.read(cx).read(cx).text(),
9201 "aaaa\nbbbb\nbbbb\ncccc"
9202 );
9203 let (_, editor) = cx.add_window(Default::default(), |cx| {
9204 let mut editor = build_editor(multibuffer.clone(), cx);
9205 let snapshot = editor.snapshot(cx);
9206 editor.begin_selection(Point::new(1, 3).to_display_point(&snapshot), false, 1, cx);
9207 assert_eq!(
9208 editor.selected_ranges(cx),
9209 [Point::new(1, 3)..Point::new(1, 3)]
9210 );
9211 editor
9212 });
9213
9214 multibuffer.update(cx, |multibuffer, cx| {
9215 multibuffer.remove_excerpts([&excerpt1_id.unwrap()], cx);
9216 });
9217 editor.update(cx, |editor, cx| {
9218 assert_eq!(
9219 editor.selected_ranges(cx),
9220 [Point::new(0, 0)..Point::new(0, 0)]
9221 );
9222
9223 // Ensure we don't panic when selections are refreshed and that the pending selection is finalized.
9224 editor.refresh_selections(cx);
9225 assert_eq!(
9226 editor.selected_ranges(cx),
9227 [Point::new(0, 3)..Point::new(0, 3)]
9228 );
9229 assert!(editor.pending_selection.is_some());
9230 });
9231 }
9232
9233 #[gpui::test]
9234 async fn test_extra_newline_insertion(cx: &mut gpui::TestAppContext) {
9235 cx.update(populate_settings);
9236 let language = Arc::new(Language::new(
9237 LanguageConfig {
9238 brackets: vec![
9239 BracketPair {
9240 start: "{".to_string(),
9241 end: "}".to_string(),
9242 close: true,
9243 newline: true,
9244 },
9245 BracketPair {
9246 start: "/* ".to_string(),
9247 end: " */".to_string(),
9248 close: true,
9249 newline: true,
9250 },
9251 ],
9252 ..Default::default()
9253 },
9254 Some(tree_sitter_rust::language()),
9255 ));
9256
9257 let text = concat!(
9258 "{ }\n", // Suppress rustfmt
9259 " x\n", //
9260 " /* */\n", //
9261 "x\n", //
9262 "{{} }\n", //
9263 );
9264
9265 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
9266 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
9267 let (_, view) = cx.add_window(|cx| build_editor(buffer, cx));
9268 view.condition(&cx, |view, cx| !view.buffer.read(cx).is_parsing(cx))
9269 .await;
9270
9271 view.update(cx, |view, cx| {
9272 view.select_display_ranges(
9273 &[
9274 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 3),
9275 DisplayPoint::new(2, 5)..DisplayPoint::new(2, 5),
9276 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 4),
9277 ],
9278 cx,
9279 );
9280 view.newline(&Newline, cx);
9281
9282 assert_eq!(
9283 view.buffer().read(cx).read(cx).text(),
9284 concat!(
9285 "{ \n", // Suppress rustfmt
9286 "\n", //
9287 "}\n", //
9288 " x\n", //
9289 " /* \n", //
9290 " \n", //
9291 " */\n", //
9292 "x\n", //
9293 "{{} \n", //
9294 "}\n", //
9295 )
9296 );
9297 });
9298 }
9299
9300 #[gpui::test]
9301 fn test_highlighted_ranges(cx: &mut gpui::MutableAppContext) {
9302 let buffer = MultiBuffer::build_simple(&sample_text(16, 8, 'a'), cx);
9303 populate_settings(cx);
9304 let (_, editor) = cx.add_window(Default::default(), |cx| build_editor(buffer.clone(), cx));
9305
9306 editor.update(cx, |editor, cx| {
9307 struct Type1;
9308 struct Type2;
9309
9310 let buffer = buffer.read(cx).snapshot(cx);
9311
9312 let anchor_range = |range: Range<Point>| {
9313 buffer.anchor_after(range.start)..buffer.anchor_after(range.end)
9314 };
9315
9316 editor.highlight_background::<Type1>(
9317 vec![
9318 anchor_range(Point::new(2, 1)..Point::new(2, 3)),
9319 anchor_range(Point::new(4, 2)..Point::new(4, 4)),
9320 anchor_range(Point::new(6, 3)..Point::new(6, 5)),
9321 anchor_range(Point::new(8, 4)..Point::new(8, 6)),
9322 ],
9323 Color::red(),
9324 cx,
9325 );
9326 editor.highlight_background::<Type2>(
9327 vec![
9328 anchor_range(Point::new(3, 2)..Point::new(3, 5)),
9329 anchor_range(Point::new(5, 3)..Point::new(5, 6)),
9330 anchor_range(Point::new(7, 4)..Point::new(7, 7)),
9331 anchor_range(Point::new(9, 5)..Point::new(9, 8)),
9332 ],
9333 Color::green(),
9334 cx,
9335 );
9336
9337 let snapshot = editor.snapshot(cx);
9338 let mut highlighted_ranges = editor.background_highlights_in_range(
9339 anchor_range(Point::new(3, 4)..Point::new(7, 4)),
9340 &snapshot,
9341 );
9342 // Enforce a consistent ordering based on color without relying on the ordering of the
9343 // highlight's `TypeId` which is non-deterministic.
9344 highlighted_ranges.sort_unstable_by_key(|(_, color)| *color);
9345 assert_eq!(
9346 highlighted_ranges,
9347 &[
9348 (
9349 DisplayPoint::new(3, 2)..DisplayPoint::new(3, 5),
9350 Color::green(),
9351 ),
9352 (
9353 DisplayPoint::new(5, 3)..DisplayPoint::new(5, 6),
9354 Color::green(),
9355 ),
9356 (
9357 DisplayPoint::new(4, 2)..DisplayPoint::new(4, 4),
9358 Color::red(),
9359 ),
9360 (
9361 DisplayPoint::new(6, 3)..DisplayPoint::new(6, 5),
9362 Color::red(),
9363 ),
9364 ]
9365 );
9366 assert_eq!(
9367 editor.background_highlights_in_range(
9368 anchor_range(Point::new(5, 6)..Point::new(6, 4)),
9369 &snapshot,
9370 ),
9371 &[(
9372 DisplayPoint::new(6, 3)..DisplayPoint::new(6, 5),
9373 Color::red(),
9374 )]
9375 );
9376 });
9377 }
9378
9379 #[gpui::test]
9380 fn test_following(cx: &mut gpui::MutableAppContext) {
9381 let buffer = MultiBuffer::build_simple(&sample_text(16, 8, 'a'), cx);
9382 populate_settings(cx);
9383
9384 let (_, leader) = cx.add_window(Default::default(), |cx| build_editor(buffer.clone(), cx));
9385 let (_, follower) = cx.add_window(
9386 WindowOptions {
9387 bounds: WindowBounds::Fixed(RectF::from_points(vec2f(0., 0.), vec2f(10., 80.))),
9388 ..Default::default()
9389 },
9390 |cx| build_editor(buffer.clone(), cx),
9391 );
9392
9393 let pending_update = Rc::new(RefCell::new(None));
9394 follower.update(cx, {
9395 let update = pending_update.clone();
9396 |_, cx| {
9397 cx.subscribe(&leader, move |_, leader, event, cx| {
9398 leader
9399 .read(cx)
9400 .add_event_to_update_proto(event, &mut *update.borrow_mut(), cx);
9401 })
9402 .detach();
9403 }
9404 });
9405
9406 // Update the selections only
9407 leader.update(cx, |leader, cx| {
9408 leader.select_ranges([1..1], None, cx);
9409 });
9410 follower.update(cx, |follower, cx| {
9411 follower
9412 .apply_update_proto(pending_update.borrow_mut().take().unwrap(), cx)
9413 .unwrap();
9414 });
9415 assert_eq!(follower.read(cx).selected_ranges(cx), vec![1..1]);
9416
9417 // Update the scroll position only
9418 leader.update(cx, |leader, cx| {
9419 leader.set_scroll_position(vec2f(1.5, 3.5), cx);
9420 });
9421 follower.update(cx, |follower, cx| {
9422 follower
9423 .apply_update_proto(pending_update.borrow_mut().take().unwrap(), cx)
9424 .unwrap();
9425 });
9426 assert_eq!(
9427 follower.update(cx, |follower, cx| follower.scroll_position(cx)),
9428 vec2f(1.5, 3.5)
9429 );
9430
9431 // Update the selections and scroll position
9432 leader.update(cx, |leader, cx| {
9433 leader.select_ranges([0..0], None, cx);
9434 leader.request_autoscroll(Autoscroll::Newest, cx);
9435 leader.set_scroll_position(vec2f(1.5, 3.5), cx);
9436 });
9437 follower.update(cx, |follower, cx| {
9438 let initial_scroll_position = follower.scroll_position(cx);
9439 follower
9440 .apply_update_proto(pending_update.borrow_mut().take().unwrap(), cx)
9441 .unwrap();
9442 assert_eq!(follower.scroll_position(cx), initial_scroll_position);
9443 assert!(follower.autoscroll_request.is_some());
9444 });
9445 assert_eq!(follower.read(cx).selected_ranges(cx), vec![0..0]);
9446
9447 // Creating a pending selection that precedes another selection
9448 leader.update(cx, |leader, cx| {
9449 leader.select_ranges([1..1], None, cx);
9450 leader.begin_selection(DisplayPoint::new(0, 0), true, 1, cx);
9451 });
9452 follower.update(cx, |follower, cx| {
9453 follower
9454 .apply_update_proto(pending_update.borrow_mut().take().unwrap(), cx)
9455 .unwrap();
9456 });
9457 assert_eq!(follower.read(cx).selected_ranges(cx), vec![0..0, 1..1]);
9458
9459 // Extend the pending selection so that it surrounds another selection
9460 leader.update(cx, |leader, cx| {
9461 leader.extend_selection(DisplayPoint::new(0, 2), 1, cx);
9462 });
9463 follower.update(cx, |follower, cx| {
9464 follower
9465 .apply_update_proto(pending_update.borrow_mut().take().unwrap(), cx)
9466 .unwrap();
9467 });
9468 assert_eq!(follower.read(cx).selected_ranges(cx), vec![0..2]);
9469 }
9470
9471 #[test]
9472 fn test_combine_syntax_and_fuzzy_match_highlights() {
9473 let string = "abcdefghijklmnop";
9474 let syntax_ranges = [
9475 (
9476 0..3,
9477 HighlightStyle {
9478 color: Some(Color::red()),
9479 ..Default::default()
9480 },
9481 ),
9482 (
9483 4..8,
9484 HighlightStyle {
9485 color: Some(Color::green()),
9486 ..Default::default()
9487 },
9488 ),
9489 ];
9490 let match_indices = [4, 6, 7, 8];
9491 assert_eq!(
9492 combine_syntax_and_fuzzy_match_highlights(
9493 &string,
9494 Default::default(),
9495 syntax_ranges.into_iter(),
9496 &match_indices,
9497 ),
9498 &[
9499 (
9500 0..3,
9501 HighlightStyle {
9502 color: Some(Color::red()),
9503 ..Default::default()
9504 },
9505 ),
9506 (
9507 4..5,
9508 HighlightStyle {
9509 color: Some(Color::green()),
9510 weight: Some(fonts::Weight::BOLD),
9511 ..Default::default()
9512 },
9513 ),
9514 (
9515 5..6,
9516 HighlightStyle {
9517 color: Some(Color::green()),
9518 ..Default::default()
9519 },
9520 ),
9521 (
9522 6..8,
9523 HighlightStyle {
9524 color: Some(Color::green()),
9525 weight: Some(fonts::Weight::BOLD),
9526 ..Default::default()
9527 },
9528 ),
9529 (
9530 8..9,
9531 HighlightStyle {
9532 weight: Some(fonts::Weight::BOLD),
9533 ..Default::default()
9534 },
9535 ),
9536 ]
9537 );
9538 }
9539
9540 fn empty_range(row: usize, column: usize) -> Range<DisplayPoint> {
9541 let point = DisplayPoint::new(row as u32, column as u32);
9542 point..point
9543 }
9544
9545 fn build_editor(buffer: ModelHandle<MultiBuffer>, cx: &mut ViewContext<Editor>) -> Editor {
9546 Editor::new(EditorMode::Full, buffer, None, None, cx)
9547 }
9548
9549 fn populate_settings(cx: &mut gpui::MutableAppContext) {
9550 let settings = Settings::test(cx);
9551 cx.set_global(settings);
9552 }
9553
9554 fn assert_selection_ranges(
9555 marked_text: &str,
9556 selection_marker_pairs: Vec<(char, char)>,
9557 view: &mut Editor,
9558 cx: &mut ViewContext<Editor>,
9559 ) {
9560 let snapshot = view.snapshot(cx).display_snapshot;
9561 let mut marker_chars = Vec::new();
9562 for (start, end) in selection_marker_pairs.iter() {
9563 marker_chars.push(*start);
9564 marker_chars.push(*end);
9565 }
9566 let (_, markers) = marked_text_by(marked_text, marker_chars);
9567 let asserted_ranges: Vec<Range<DisplayPoint>> = selection_marker_pairs
9568 .iter()
9569 .map(|(start, end)| {
9570 let start = markers.get(start).unwrap()[0].to_display_point(&snapshot);
9571 let end = markers.get(end).unwrap()[0].to_display_point(&snapshot);
9572 start..end
9573 })
9574 .collect();
9575 assert_eq!(
9576 view.selected_display_ranges(cx),
9577 &asserted_ranges[..],
9578 "Assert selections are {}",
9579 marked_text
9580 );
9581 }
9582}
9583
9584trait RangeExt<T> {
9585 fn sorted(&self) -> Range<T>;
9586 fn to_inclusive(&self) -> RangeInclusive<T>;
9587}
9588
9589impl<T: Ord + Clone> RangeExt<T> for Range<T> {
9590 fn sorted(&self) -> Self {
9591 cmp::min(&self.start, &self.end).clone()..cmp::max(&self.start, &self.end).clone()
9592 }
9593
9594 fn to_inclusive(&self) -> RangeInclusive<T> {
9595 self.start.clone()..=self.end.clone()
9596 }
9597}