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, VecDeque};
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;
65const MAX_SELECTION_HISTORY_LEN: usize = 1024;
66
67action!(Cancel);
68action!(Backspace);
69action!(Delete);
70action!(Input, String);
71action!(Newline);
72action!(Tab, Direction);
73action!(Indent);
74action!(Outdent);
75action!(DeleteLine);
76action!(DeleteToPreviousWordStart);
77action!(DeleteToPreviousSubwordStart);
78action!(DeleteToNextWordEnd);
79action!(DeleteToNextSubwordEnd);
80action!(DeleteToBeginningOfLine);
81action!(DeleteToEndOfLine);
82action!(CutToEndOfLine);
83action!(DuplicateLine);
84action!(MoveLineUp);
85action!(MoveLineDown);
86action!(Cut);
87action!(Copy);
88action!(Paste);
89action!(Undo);
90action!(Redo);
91action!(MoveUp);
92action!(MoveDown);
93action!(MoveLeft);
94action!(MoveRight);
95action!(MoveToPreviousWordStart);
96action!(MoveToPreviousSubwordStart);
97action!(MoveToNextWordEnd);
98action!(MoveToNextSubwordEnd);
99action!(MoveToBeginningOfLine);
100action!(MoveToEndOfLine);
101action!(MoveToBeginning);
102action!(MoveToEnd);
103action!(SelectUp);
104action!(SelectDown);
105action!(SelectLeft);
106action!(SelectRight);
107action!(SelectToPreviousWordStart);
108action!(SelectToPreviousSubwordStart);
109action!(SelectToNextWordEnd);
110action!(SelectToNextSubwordEnd);
111action!(SelectToBeginningOfLine, bool);
112action!(SelectToEndOfLine, bool);
113action!(SelectToBeginning);
114action!(SelectToEnd);
115action!(SelectAll);
116action!(SelectLine);
117action!(SplitSelectionIntoLines);
118action!(AddSelectionAbove);
119action!(AddSelectionBelow);
120action!(SelectNext, bool);
121action!(ToggleComments);
122action!(SelectLargerSyntaxNode);
123action!(SelectSmallerSyntaxNode);
124action!(MoveToEnclosingBracket);
125action!(UndoSelection);
126action!(RedoSelection);
127action!(GoToDiagnostic, Direction);
128action!(GoToDefinition);
129action!(FindAllReferences);
130action!(Rename);
131action!(ConfirmRename);
132action!(PageUp);
133action!(PageDown);
134action!(Fold);
135action!(UnfoldLines);
136action!(FoldSelectedRanges);
137action!(Scroll, Vector2F);
138action!(Select, SelectPhase);
139action!(ShowCompletions);
140action!(ToggleCodeActions, bool);
141action!(ConfirmCompletion, Option<usize>);
142action!(ConfirmCodeAction, Option<usize>);
143action!(OpenExcerpts);
144action!(RestartLanguageServer);
145
146enum DocumentHighlightRead {}
147enum DocumentHighlightWrite {}
148
149#[derive(Copy, Clone, PartialEq, Eq)]
150pub enum Direction {
151 Prev,
152 Next,
153}
154
155pub fn init(cx: &mut MutableAppContext) {
156 cx.add_bindings(vec![
157 Binding::new("escape", Cancel, Some("Editor")),
158 Binding::new("backspace", Backspace, Some("Editor")),
159 Binding::new("ctrl-h", Backspace, Some("Editor")),
160 Binding::new("delete", Delete, Some("Editor")),
161 Binding::new("ctrl-d", Delete, Some("Editor")),
162 Binding::new("enter", Newline, Some("Editor && mode == full")),
163 Binding::new(
164 "alt-enter",
165 Input("\n".into()),
166 Some("Editor && mode == auto_height"),
167 ),
168 Binding::new(
169 "enter",
170 ConfirmCompletion(None),
171 Some("Editor && showing_completions"),
172 ),
173 Binding::new(
174 "enter",
175 ConfirmCodeAction(None),
176 Some("Editor && showing_code_actions"),
177 ),
178 Binding::new("enter", ConfirmRename, Some("Editor && renaming")),
179 Binding::new("tab", Tab(Direction::Next), Some("Editor")),
180 Binding::new("shift-tab", Tab(Direction::Prev), Some("Editor")),
181 Binding::new(
182 "tab",
183 ConfirmCompletion(None),
184 Some("Editor && showing_completions"),
185 ),
186 Binding::new("cmd-[", Outdent, Some("Editor")),
187 Binding::new("cmd-]", Indent, Some("Editor")),
188 Binding::new("ctrl-shift-K", DeleteLine, Some("Editor")),
189 Binding::new("alt-backspace", DeleteToPreviousWordStart, Some("Editor")),
190 Binding::new("alt-h", DeleteToPreviousWordStart, Some("Editor")),
191 Binding::new(
192 "ctrl-alt-backspace",
193 DeleteToPreviousSubwordStart,
194 Some("Editor"),
195 ),
196 Binding::new("ctrl-alt-h", DeleteToPreviousSubwordStart, Some("Editor")),
197 Binding::new("alt-delete", DeleteToNextWordEnd, Some("Editor")),
198 Binding::new("alt-d", DeleteToNextWordEnd, Some("Editor")),
199 Binding::new("ctrl-alt-delete", DeleteToNextSubwordEnd, Some("Editor")),
200 Binding::new("ctrl-alt-d", DeleteToNextSubwordEnd, Some("Editor")),
201 Binding::new("cmd-backspace", DeleteToBeginningOfLine, Some("Editor")),
202 Binding::new("cmd-delete", DeleteToEndOfLine, Some("Editor")),
203 Binding::new("ctrl-k", CutToEndOfLine, Some("Editor")),
204 Binding::new("cmd-shift-D", DuplicateLine, Some("Editor")),
205 Binding::new("ctrl-cmd-up", MoveLineUp, Some("Editor")),
206 Binding::new("ctrl-cmd-down", MoveLineDown, Some("Editor")),
207 Binding::new("cmd-x", Cut, Some("Editor")),
208 Binding::new("cmd-c", Copy, Some("Editor")),
209 Binding::new("cmd-v", Paste, Some("Editor")),
210 Binding::new("cmd-z", Undo, Some("Editor")),
211 Binding::new("cmd-shift-Z", Redo, Some("Editor")),
212 Binding::new("up", MoveUp, Some("Editor")),
213 Binding::new("down", MoveDown, Some("Editor")),
214 Binding::new("left", MoveLeft, Some("Editor")),
215 Binding::new("right", MoveRight, Some("Editor")),
216 Binding::new("ctrl-p", MoveUp, Some("Editor")),
217 Binding::new("ctrl-n", MoveDown, Some("Editor")),
218 Binding::new("ctrl-b", MoveLeft, Some("Editor")),
219 Binding::new("ctrl-f", MoveRight, Some("Editor")),
220 Binding::new("alt-left", MoveToPreviousWordStart, Some("Editor")),
221 Binding::new("alt-b", MoveToPreviousWordStart, Some("Editor")),
222 Binding::new("ctrl-alt-left", MoveToPreviousSubwordStart, Some("Editor")),
223 Binding::new("ctrl-alt-b", MoveToPreviousSubwordStart, Some("Editor")),
224 Binding::new("alt-right", MoveToNextWordEnd, Some("Editor")),
225 Binding::new("alt-f", MoveToNextWordEnd, Some("Editor")),
226 Binding::new("ctrl-alt-right", MoveToNextSubwordEnd, Some("Editor")),
227 Binding::new("ctrl-alt-f", MoveToNextSubwordEnd, Some("Editor")),
228 Binding::new("cmd-left", MoveToBeginningOfLine, Some("Editor")),
229 Binding::new("ctrl-a", MoveToBeginningOfLine, Some("Editor")),
230 Binding::new("cmd-right", MoveToEndOfLine, Some("Editor")),
231 Binding::new("ctrl-e", MoveToEndOfLine, Some("Editor")),
232 Binding::new("cmd-up", MoveToBeginning, Some("Editor")),
233 Binding::new("cmd-down", MoveToEnd, Some("Editor")),
234 Binding::new("shift-up", SelectUp, Some("Editor")),
235 Binding::new("ctrl-shift-P", SelectUp, Some("Editor")),
236 Binding::new("shift-down", SelectDown, Some("Editor")),
237 Binding::new("ctrl-shift-N", SelectDown, Some("Editor")),
238 Binding::new("shift-left", SelectLeft, Some("Editor")),
239 Binding::new("ctrl-shift-B", SelectLeft, Some("Editor")),
240 Binding::new("shift-right", SelectRight, Some("Editor")),
241 Binding::new("ctrl-shift-F", SelectRight, Some("Editor")),
242 Binding::new("alt-shift-left", SelectToPreviousWordStart, Some("Editor")),
243 Binding::new("alt-shift-B", SelectToPreviousWordStart, Some("Editor")),
244 Binding::new(
245 "ctrl-alt-shift-left",
246 SelectToPreviousSubwordStart,
247 Some("Editor"),
248 ),
249 Binding::new(
250 "ctrl-alt-shift-B",
251 SelectToPreviousSubwordStart,
252 Some("Editor"),
253 ),
254 Binding::new("alt-shift-right", SelectToNextWordEnd, Some("Editor")),
255 Binding::new("alt-shift-F", SelectToNextWordEnd, Some("Editor")),
256 Binding::new(
257 "cmd-shift-left",
258 SelectToBeginningOfLine(true),
259 Some("Editor"),
260 ),
261 Binding::new(
262 "ctrl-alt-shift-right",
263 SelectToNextSubwordEnd,
264 Some("Editor"),
265 ),
266 Binding::new("ctrl-alt-shift-F", SelectToNextSubwordEnd, Some("Editor")),
267 Binding::new(
268 "ctrl-shift-A",
269 SelectToBeginningOfLine(true),
270 Some("Editor"),
271 ),
272 Binding::new("cmd-shift-right", SelectToEndOfLine(true), Some("Editor")),
273 Binding::new("ctrl-shift-E", SelectToEndOfLine(true), Some("Editor")),
274 Binding::new("cmd-shift-up", SelectToBeginning, Some("Editor")),
275 Binding::new("cmd-shift-down", SelectToEnd, Some("Editor")),
276 Binding::new("cmd-a", SelectAll, Some("Editor")),
277 Binding::new("cmd-l", SelectLine, Some("Editor")),
278 Binding::new("cmd-shift-L", SplitSelectionIntoLines, Some("Editor")),
279 Binding::new("cmd-alt-up", AddSelectionAbove, Some("Editor")),
280 Binding::new("cmd-ctrl-p", AddSelectionAbove, Some("Editor")),
281 Binding::new("cmd-alt-down", AddSelectionBelow, Some("Editor")),
282 Binding::new("cmd-ctrl-n", AddSelectionBelow, Some("Editor")),
283 Binding::new("cmd-d", SelectNext(false), Some("Editor")),
284 Binding::new("cmd-k cmd-d", SelectNext(true), Some("Editor")),
285 Binding::new("cmd-/", ToggleComments, Some("Editor")),
286 Binding::new("alt-up", SelectLargerSyntaxNode, Some("Editor")),
287 Binding::new("ctrl-w", SelectLargerSyntaxNode, Some("Editor")),
288 Binding::new("alt-down", SelectSmallerSyntaxNode, Some("Editor")),
289 Binding::new("ctrl-shift-W", SelectSmallerSyntaxNode, Some("Editor")),
290 Binding::new("cmd-u", UndoSelection, Some("Editor")),
291 Binding::new("cmd-shift-U", RedoSelection, Some("Editor")),
292 Binding::new("f8", GoToDiagnostic(Direction::Next), Some("Editor")),
293 Binding::new("shift-f8", GoToDiagnostic(Direction::Prev), Some("Editor")),
294 Binding::new("f2", Rename, Some("Editor")),
295 Binding::new("f12", GoToDefinition, Some("Editor")),
296 Binding::new("alt-shift-f12", FindAllReferences, Some("Editor")),
297 Binding::new("ctrl-m", MoveToEnclosingBracket, Some("Editor")),
298 Binding::new("pageup", PageUp, Some("Editor")),
299 Binding::new("pagedown", PageDown, Some("Editor")),
300 Binding::new("alt-cmd-[", Fold, Some("Editor")),
301 Binding::new("alt-cmd-]", UnfoldLines, Some("Editor")),
302 Binding::new("alt-cmd-f", FoldSelectedRanges, Some("Editor")),
303 Binding::new("ctrl-space", ShowCompletions, Some("Editor")),
304 Binding::new("cmd-.", ToggleCodeActions(false), Some("Editor")),
305 Binding::new("alt-enter", OpenExcerpts, Some("Editor")),
306 Binding::new("cmd-f10", RestartLanguageServer, Some("Editor")),
307 ]);
308
309 cx.add_action(Editor::open_new);
310 cx.add_action(|this: &mut Editor, action: &Scroll, cx| this.set_scroll_position(action.0, cx));
311 cx.add_action(Editor::select);
312 cx.add_action(Editor::cancel);
313 cx.add_action(Editor::handle_input);
314 cx.add_action(Editor::newline);
315 cx.add_action(Editor::backspace);
316 cx.add_action(Editor::delete);
317 cx.add_action(Editor::tab);
318 cx.add_action(Editor::indent);
319 cx.add_action(Editor::outdent);
320 cx.add_action(Editor::delete_line);
321 cx.add_action(Editor::delete_to_previous_word_start);
322 cx.add_action(Editor::delete_to_previous_subword_start);
323 cx.add_action(Editor::delete_to_next_word_end);
324 cx.add_action(Editor::delete_to_next_subword_end);
325 cx.add_action(Editor::delete_to_beginning_of_line);
326 cx.add_action(Editor::delete_to_end_of_line);
327 cx.add_action(Editor::cut_to_end_of_line);
328 cx.add_action(Editor::duplicate_line);
329 cx.add_action(Editor::move_line_up);
330 cx.add_action(Editor::move_line_down);
331 cx.add_action(Editor::cut);
332 cx.add_action(Editor::copy);
333 cx.add_action(Editor::paste);
334 cx.add_action(Editor::undo);
335 cx.add_action(Editor::redo);
336 cx.add_action(Editor::move_up);
337 cx.add_action(Editor::move_down);
338 cx.add_action(Editor::move_left);
339 cx.add_action(Editor::move_right);
340 cx.add_action(Editor::move_to_previous_word_start);
341 cx.add_action(Editor::move_to_previous_subword_start);
342 cx.add_action(Editor::move_to_next_word_end);
343 cx.add_action(Editor::move_to_next_subword_end);
344 cx.add_action(Editor::move_to_beginning_of_line);
345 cx.add_action(Editor::move_to_end_of_line);
346 cx.add_action(Editor::move_to_beginning);
347 cx.add_action(Editor::move_to_end);
348 cx.add_action(Editor::select_up);
349 cx.add_action(Editor::select_down);
350 cx.add_action(Editor::select_left);
351 cx.add_action(Editor::select_right);
352 cx.add_action(Editor::select_to_previous_word_start);
353 cx.add_action(Editor::select_to_previous_subword_start);
354 cx.add_action(Editor::select_to_next_word_end);
355 cx.add_action(Editor::select_to_next_subword_end);
356 cx.add_action(Editor::select_to_beginning_of_line);
357 cx.add_action(Editor::select_to_end_of_line);
358 cx.add_action(Editor::select_to_beginning);
359 cx.add_action(Editor::select_to_end);
360 cx.add_action(Editor::select_all);
361 cx.add_action(Editor::select_line);
362 cx.add_action(Editor::split_selection_into_lines);
363 cx.add_action(Editor::add_selection_above);
364 cx.add_action(Editor::add_selection_below);
365 cx.add_action(Editor::select_next);
366 cx.add_action(Editor::toggle_comments);
367 cx.add_action(Editor::select_larger_syntax_node);
368 cx.add_action(Editor::select_smaller_syntax_node);
369 cx.add_action(Editor::move_to_enclosing_bracket);
370 cx.add_action(Editor::undo_selection);
371 cx.add_action(Editor::redo_selection);
372 cx.add_action(Editor::go_to_diagnostic);
373 cx.add_action(Editor::go_to_definition);
374 cx.add_action(Editor::page_up);
375 cx.add_action(Editor::page_down);
376 cx.add_action(Editor::fold);
377 cx.add_action(Editor::unfold_lines);
378 cx.add_action(Editor::fold_selected_ranges);
379 cx.add_action(Editor::show_completions);
380 cx.add_action(Editor::toggle_code_actions);
381 cx.add_action(Editor::open_excerpts);
382 cx.add_action(Editor::restart_language_server);
383 cx.add_async_action(Editor::confirm_completion);
384 cx.add_async_action(Editor::confirm_code_action);
385 cx.add_async_action(Editor::rename);
386 cx.add_async_action(Editor::confirm_rename);
387 cx.add_async_action(Editor::find_all_references);
388
389 workspace::register_project_item::<Editor>(cx);
390 workspace::register_followable_item::<Editor>(cx);
391}
392
393trait InvalidationRegion {
394 fn ranges(&self) -> &[Range<Anchor>];
395}
396
397#[derive(Clone, Debug)]
398pub enum SelectPhase {
399 Begin {
400 position: DisplayPoint,
401 add: bool,
402 click_count: usize,
403 },
404 BeginColumnar {
405 position: DisplayPoint,
406 overshoot: u32,
407 },
408 Extend {
409 position: DisplayPoint,
410 click_count: usize,
411 },
412 Update {
413 position: DisplayPoint,
414 overshoot: u32,
415 scroll_position: Vector2F,
416 },
417 End,
418}
419
420#[derive(Clone, Debug)]
421pub enum SelectMode {
422 Character,
423 Word(Range<Anchor>),
424 Line(Range<Anchor>),
425 All,
426}
427
428#[derive(PartialEq, Eq)]
429pub enum Autoscroll {
430 Fit,
431 Center,
432 Newest,
433}
434
435#[derive(Copy, Clone, PartialEq, Eq)]
436pub enum EditorMode {
437 SingleLine,
438 AutoHeight { max_lines: usize },
439 Full,
440}
441
442#[derive(Clone)]
443pub enum SoftWrap {
444 None,
445 EditorWidth,
446 Column(u32),
447}
448
449#[derive(Clone)]
450pub struct EditorStyle {
451 pub text: TextStyle,
452 pub placeholder_text: Option<TextStyle>,
453 pub theme: theme::Editor,
454}
455
456type CompletionId = usize;
457
458pub type GetFieldEditorTheme = fn(&theme::Theme) -> theme::FieldEditor;
459
460type OverrideTextStyle = dyn Fn(&EditorStyle) -> Option<HighlightStyle>;
461
462pub struct Editor {
463 handle: WeakViewHandle<Self>,
464 buffer: ModelHandle<MultiBuffer>,
465 display_map: ModelHandle<DisplayMap>,
466 next_selection_id: usize,
467 selections: Arc<[Selection<Anchor>]>,
468 pending_selection: Option<PendingSelection>,
469 columnar_selection_tail: Option<Anchor>,
470 add_selections_state: Option<AddSelectionsState>,
471 select_next_state: Option<SelectNextState>,
472 selection_history: SelectionHistory,
473 autoclose_stack: InvalidationStack<BracketPairState>,
474 snippet_stack: InvalidationStack<SnippetState>,
475 select_larger_syntax_node_stack: Vec<Box<[Selection<usize>]>>,
476 active_diagnostics: Option<ActiveDiagnosticGroup>,
477 scroll_position: Vector2F,
478 scroll_top_anchor: Anchor,
479 autoscroll_request: Option<(Autoscroll, bool)>,
480 soft_wrap_mode_override: Option<settings::SoftWrap>,
481 get_field_editor_theme: Option<GetFieldEditorTheme>,
482 override_text_style: Option<Box<OverrideTextStyle>>,
483 project: Option<ModelHandle<Project>>,
484 focused: bool,
485 show_local_cursors: bool,
486 show_local_selections: bool,
487 blink_epoch: usize,
488 blinking_paused: bool,
489 mode: EditorMode,
490 vertical_scroll_margin: f32,
491 placeholder_text: Option<Arc<str>>,
492 highlighted_rows: Option<Range<u32>>,
493 background_highlights: BTreeMap<TypeId, (Color, Vec<Range<Anchor>>)>,
494 nav_history: Option<ItemNavHistory>,
495 context_menu: Option<ContextMenu>,
496 completion_tasks: Vec<(CompletionId, Task<Option<()>>)>,
497 next_completion_id: CompletionId,
498 available_code_actions: Option<(ModelHandle<Buffer>, Arc<[CodeAction]>)>,
499 code_actions_task: Option<Task<()>>,
500 document_highlights_task: Option<Task<()>>,
501 pending_rename: Option<RenameState>,
502 searchable: bool,
503 cursor_shape: CursorShape,
504 keymap_context_layers: BTreeMap<TypeId, gpui::keymap::Context>,
505 input_enabled: bool,
506 leader_replica_id: Option<u16>,
507}
508
509pub struct EditorSnapshot {
510 pub mode: EditorMode,
511 pub display_snapshot: DisplaySnapshot,
512 pub placeholder_text: Option<Arc<str>>,
513 is_focused: bool,
514 scroll_position: Vector2F,
515 scroll_top_anchor: Anchor,
516}
517
518#[derive(Clone)]
519pub struct PendingSelection {
520 selection: Selection<Anchor>,
521 mode: SelectMode,
522}
523
524#[derive(Clone)]
525struct SelectionHistoryEntry {
526 selections: Arc<[Selection<Anchor>]>,
527 select_next_state: Option<SelectNextState>,
528 add_selections_state: Option<AddSelectionsState>,
529}
530
531enum SelectionHistoryMode {
532 Normal,
533 Undoing,
534 Redoing,
535}
536
537impl Default for SelectionHistoryMode {
538 fn default() -> Self {
539 Self::Normal
540 }
541}
542
543#[derive(Default)]
544struct SelectionHistory {
545 selections_by_transaction:
546 HashMap<TransactionId, (Arc<[Selection<Anchor>]>, Option<Arc<[Selection<Anchor>]>>)>,
547 mode: SelectionHistoryMode,
548 undo_stack: VecDeque<SelectionHistoryEntry>,
549 redo_stack: VecDeque<SelectionHistoryEntry>,
550}
551
552impl SelectionHistory {
553 fn insert_transaction(
554 &mut self,
555 transaction_id: TransactionId,
556 selections: Arc<[Selection<Anchor>]>,
557 ) {
558 self.selections_by_transaction
559 .insert(transaction_id, (selections, None));
560 }
561
562 fn transaction(
563 &self,
564 transaction_id: TransactionId,
565 ) -> Option<&(Arc<[Selection<Anchor>]>, Option<Arc<[Selection<Anchor>]>>)> {
566 self.selections_by_transaction.get(&transaction_id)
567 }
568
569 fn transaction_mut(
570 &mut self,
571 transaction_id: TransactionId,
572 ) -> Option<&mut (Arc<[Selection<Anchor>]>, Option<Arc<[Selection<Anchor>]>>)> {
573 self.selections_by_transaction.get_mut(&transaction_id)
574 }
575
576 fn push(&mut self, entry: SelectionHistoryEntry) {
577 if !entry.selections.is_empty() {
578 match self.mode {
579 SelectionHistoryMode::Normal => {
580 self.push_undo(entry);
581 self.redo_stack.clear();
582 }
583 SelectionHistoryMode::Undoing => self.push_redo(entry),
584 SelectionHistoryMode::Redoing => self.push_undo(entry),
585 }
586 }
587 }
588
589 fn push_undo(&mut self, entry: SelectionHistoryEntry) {
590 if self
591 .undo_stack
592 .back()
593 .map_or(true, |e| e.selections != entry.selections)
594 {
595 self.undo_stack.push_back(entry);
596 if self.undo_stack.len() > MAX_SELECTION_HISTORY_LEN {
597 self.undo_stack.pop_front();
598 }
599 }
600 }
601
602 fn push_redo(&mut self, entry: SelectionHistoryEntry) {
603 if self
604 .redo_stack
605 .back()
606 .map_or(true, |e| e.selections != entry.selections)
607 {
608 self.redo_stack.push_back(entry);
609 if self.redo_stack.len() > MAX_SELECTION_HISTORY_LEN {
610 self.redo_stack.pop_front();
611 }
612 }
613 }
614}
615
616#[derive(Clone)]
617struct AddSelectionsState {
618 above: bool,
619 stack: Vec<usize>,
620}
621
622#[derive(Clone)]
623struct SelectNextState {
624 query: AhoCorasick,
625 wordwise: bool,
626 done: bool,
627}
628
629struct BracketPairState {
630 ranges: Vec<Range<Anchor>>,
631 pair: BracketPair,
632}
633
634struct SnippetState {
635 ranges: Vec<Vec<Range<Anchor>>>,
636 active_index: usize,
637}
638
639pub struct RenameState {
640 pub range: Range<Anchor>,
641 pub old_name: String,
642 pub editor: ViewHandle<Editor>,
643 block_id: BlockId,
644}
645
646struct InvalidationStack<T>(Vec<T>);
647
648enum ContextMenu {
649 Completions(CompletionsMenu),
650 CodeActions(CodeActionsMenu),
651}
652
653impl ContextMenu {
654 fn select_prev(&mut self, cx: &mut ViewContext<Editor>) -> bool {
655 if self.visible() {
656 match self {
657 ContextMenu::Completions(menu) => menu.select_prev(cx),
658 ContextMenu::CodeActions(menu) => menu.select_prev(cx),
659 }
660 true
661 } else {
662 false
663 }
664 }
665
666 fn select_next(&mut self, cx: &mut ViewContext<Editor>) -> bool {
667 if self.visible() {
668 match self {
669 ContextMenu::Completions(menu) => menu.select_next(cx),
670 ContextMenu::CodeActions(menu) => menu.select_next(cx),
671 }
672 true
673 } else {
674 false
675 }
676 }
677
678 fn visible(&self) -> bool {
679 match self {
680 ContextMenu::Completions(menu) => menu.visible(),
681 ContextMenu::CodeActions(menu) => menu.visible(),
682 }
683 }
684
685 fn render(
686 &self,
687 cursor_position: DisplayPoint,
688 style: EditorStyle,
689 cx: &AppContext,
690 ) -> (DisplayPoint, ElementBox) {
691 match self {
692 ContextMenu::Completions(menu) => (cursor_position, menu.render(style, cx)),
693 ContextMenu::CodeActions(menu) => menu.render(cursor_position, style),
694 }
695 }
696}
697
698struct CompletionsMenu {
699 id: CompletionId,
700 initial_position: Anchor,
701 buffer: ModelHandle<Buffer>,
702 completions: Arc<[Completion]>,
703 match_candidates: Vec<StringMatchCandidate>,
704 matches: Arc<[StringMatch]>,
705 selected_item: usize,
706 list: UniformListState,
707}
708
709impl CompletionsMenu {
710 fn select_prev(&mut self, cx: &mut ViewContext<Editor>) {
711 if self.selected_item > 0 {
712 self.selected_item -= 1;
713 self.list.scroll_to(ScrollTarget::Show(self.selected_item));
714 }
715 cx.notify();
716 }
717
718 fn select_next(&mut self, cx: &mut ViewContext<Editor>) {
719 if self.selected_item + 1 < self.matches.len() {
720 self.selected_item += 1;
721 self.list.scroll_to(ScrollTarget::Show(self.selected_item));
722 }
723 cx.notify();
724 }
725
726 fn visible(&self) -> bool {
727 !self.matches.is_empty()
728 }
729
730 fn render(&self, style: EditorStyle, _: &AppContext) -> ElementBox {
731 enum CompletionTag {}
732
733 let completions = self.completions.clone();
734 let matches = self.matches.clone();
735 let selected_item = self.selected_item;
736 let container_style = style.autocomplete.container;
737 UniformList::new(self.list.clone(), matches.len(), move |range, items, cx| {
738 let start_ix = range.start;
739 for (ix, mat) in matches[range].iter().enumerate() {
740 let completion = &completions[mat.candidate_id];
741 let item_ix = start_ix + ix;
742 items.push(
743 MouseEventHandler::new::<CompletionTag, _, _>(
744 mat.candidate_id,
745 cx,
746 |state, _| {
747 let item_style = if item_ix == selected_item {
748 style.autocomplete.selected_item
749 } else if state.hovered {
750 style.autocomplete.hovered_item
751 } else {
752 style.autocomplete.item
753 };
754
755 Text::new(completion.label.text.clone(), style.text.clone())
756 .with_soft_wrap(false)
757 .with_highlights(combine_syntax_and_fuzzy_match_highlights(
758 &completion.label.text,
759 style.text.color.into(),
760 styled_runs_for_code_label(&completion.label, &style.syntax),
761 &mat.positions,
762 ))
763 .contained()
764 .with_style(item_style)
765 .boxed()
766 },
767 )
768 .with_cursor_style(CursorStyle::PointingHand)
769 .on_mouse_down(move |cx| {
770 cx.dispatch_action(ConfirmCompletion(Some(item_ix)));
771 })
772 .boxed(),
773 );
774 }
775 })
776 .with_width_from_item(
777 self.matches
778 .iter()
779 .enumerate()
780 .max_by_key(|(_, mat)| {
781 self.completions[mat.candidate_id]
782 .label
783 .text
784 .chars()
785 .count()
786 })
787 .map(|(ix, _)| ix),
788 )
789 .contained()
790 .with_style(container_style)
791 .boxed()
792 }
793
794 pub async fn filter(&mut self, query: Option<&str>, executor: Arc<executor::Background>) {
795 let mut matches = if let Some(query) = query {
796 fuzzy::match_strings(
797 &self.match_candidates,
798 query,
799 false,
800 100,
801 &Default::default(),
802 executor,
803 )
804 .await
805 } else {
806 self.match_candidates
807 .iter()
808 .enumerate()
809 .map(|(candidate_id, candidate)| StringMatch {
810 candidate_id,
811 score: Default::default(),
812 positions: Default::default(),
813 string: candidate.string.clone(),
814 })
815 .collect()
816 };
817 matches.sort_unstable_by_key(|mat| {
818 (
819 Reverse(OrderedFloat(mat.score)),
820 self.completions[mat.candidate_id].sort_key(),
821 )
822 });
823
824 for mat in &mut matches {
825 let filter_start = self.completions[mat.candidate_id].label.filter_range.start;
826 for position in &mut mat.positions {
827 *position += filter_start;
828 }
829 }
830
831 self.matches = matches.into();
832 }
833}
834
835#[derive(Clone)]
836struct CodeActionsMenu {
837 actions: Arc<[CodeAction]>,
838 buffer: ModelHandle<Buffer>,
839 selected_item: usize,
840 list: UniformListState,
841 deployed_from_indicator: bool,
842}
843
844impl CodeActionsMenu {
845 fn select_prev(&mut self, cx: &mut ViewContext<Editor>) {
846 if self.selected_item > 0 {
847 self.selected_item -= 1;
848 cx.notify()
849 }
850 }
851
852 fn select_next(&mut self, cx: &mut ViewContext<Editor>) {
853 if self.selected_item + 1 < self.actions.len() {
854 self.selected_item += 1;
855 cx.notify()
856 }
857 }
858
859 fn visible(&self) -> bool {
860 !self.actions.is_empty()
861 }
862
863 fn render(
864 &self,
865 mut cursor_position: DisplayPoint,
866 style: EditorStyle,
867 ) -> (DisplayPoint, ElementBox) {
868 enum ActionTag {}
869
870 let container_style = style.autocomplete.container;
871 let actions = self.actions.clone();
872 let selected_item = self.selected_item;
873 let element =
874 UniformList::new(self.list.clone(), actions.len(), move |range, items, cx| {
875 let start_ix = range.start;
876 for (ix, action) in actions[range].iter().enumerate() {
877 let item_ix = start_ix + ix;
878 items.push(
879 MouseEventHandler::new::<ActionTag, _, _>(item_ix, cx, |state, _| {
880 let item_style = if item_ix == selected_item {
881 style.autocomplete.selected_item
882 } else if state.hovered {
883 style.autocomplete.hovered_item
884 } else {
885 style.autocomplete.item
886 };
887
888 Text::new(action.lsp_action.title.clone(), style.text.clone())
889 .with_soft_wrap(false)
890 .contained()
891 .with_style(item_style)
892 .boxed()
893 })
894 .with_cursor_style(CursorStyle::PointingHand)
895 .on_mouse_down(move |cx| {
896 cx.dispatch_action(ConfirmCodeAction(Some(item_ix)));
897 })
898 .boxed(),
899 );
900 }
901 })
902 .with_width_from_item(
903 self.actions
904 .iter()
905 .enumerate()
906 .max_by_key(|(_, action)| action.lsp_action.title.chars().count())
907 .map(|(ix, _)| ix),
908 )
909 .contained()
910 .with_style(container_style)
911 .boxed();
912
913 if self.deployed_from_indicator {
914 *cursor_position.column_mut() = 0;
915 }
916
917 (cursor_position, element)
918 }
919}
920
921#[derive(Debug)]
922struct ActiveDiagnosticGroup {
923 primary_range: Range<Anchor>,
924 primary_message: String,
925 blocks: HashMap<BlockId, Diagnostic>,
926 is_valid: bool,
927}
928
929#[derive(Serialize, Deserialize)]
930struct ClipboardSelection {
931 len: usize,
932 is_entire_line: bool,
933}
934
935pub struct NavigationData {
936 anchor: Anchor,
937 offset: usize,
938}
939
940pub struct EditorCreated(pub ViewHandle<Editor>);
941
942impl Editor {
943 pub fn single_line(
944 field_editor_style: Option<GetFieldEditorTheme>,
945 cx: &mut ViewContext<Self>,
946 ) -> Self {
947 let buffer = cx.add_model(|cx| Buffer::new(0, String::new(), cx));
948 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
949 Self::new(EditorMode::SingleLine, buffer, None, field_editor_style, cx)
950 }
951
952 pub fn auto_height(
953 max_lines: usize,
954 field_editor_style: Option<GetFieldEditorTheme>,
955 cx: &mut ViewContext<Self>,
956 ) -> Self {
957 let buffer = cx.add_model(|cx| Buffer::new(0, String::new(), cx));
958 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
959 Self::new(
960 EditorMode::AutoHeight { max_lines },
961 buffer,
962 None,
963 field_editor_style,
964 cx,
965 )
966 }
967
968 pub fn for_buffer(
969 buffer: ModelHandle<Buffer>,
970 project: Option<ModelHandle<Project>>,
971 cx: &mut ViewContext<Self>,
972 ) -> Self {
973 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
974 Self::new(EditorMode::Full, buffer, project, None, cx)
975 }
976
977 pub fn for_multibuffer(
978 buffer: ModelHandle<MultiBuffer>,
979 project: Option<ModelHandle<Project>>,
980 cx: &mut ViewContext<Self>,
981 ) -> Self {
982 Self::new(EditorMode::Full, buffer, project, None, cx)
983 }
984
985 pub fn clone(&self, cx: &mut ViewContext<Self>) -> Self {
986 let mut clone = Self::new(
987 self.mode,
988 self.buffer.clone(),
989 self.project.clone(),
990 self.get_field_editor_theme,
991 cx,
992 );
993 clone.scroll_position = self.scroll_position;
994 clone.scroll_top_anchor = self.scroll_top_anchor.clone();
995 clone.searchable = self.searchable;
996 clone
997 }
998
999 fn new(
1000 mode: EditorMode,
1001 buffer: ModelHandle<MultiBuffer>,
1002 project: Option<ModelHandle<Project>>,
1003 get_field_editor_theme: Option<GetFieldEditorTheme>,
1004 cx: &mut ViewContext<Self>,
1005 ) -> Self {
1006 let display_map = cx.add_model(|cx| {
1007 let settings = cx.global::<Settings>();
1008 let style = build_style(&*settings, get_field_editor_theme, None, cx);
1009 DisplayMap::new(
1010 buffer.clone(),
1011 settings.tab_size,
1012 style.text.font_id,
1013 style.text.font_size,
1014 None,
1015 2,
1016 1,
1017 cx,
1018 )
1019 });
1020 cx.observe(&buffer, Self::on_buffer_changed).detach();
1021 cx.subscribe(&buffer, Self::on_buffer_event).detach();
1022 cx.observe(&display_map, Self::on_display_map_changed)
1023 .detach();
1024
1025 let mut this = Self {
1026 handle: cx.weak_handle(),
1027 buffer,
1028 display_map,
1029 selections: Arc::from([]),
1030 pending_selection: Some(PendingSelection {
1031 selection: Selection {
1032 id: 0,
1033 start: Anchor::min(),
1034 end: Anchor::min(),
1035 reversed: false,
1036 goal: SelectionGoal::None,
1037 },
1038 mode: SelectMode::Character,
1039 }),
1040 columnar_selection_tail: None,
1041 next_selection_id: 1,
1042 add_selections_state: None,
1043 select_next_state: None,
1044 selection_history: Default::default(),
1045 autoclose_stack: Default::default(),
1046 snippet_stack: Default::default(),
1047 select_larger_syntax_node_stack: Vec::new(),
1048 active_diagnostics: None,
1049 soft_wrap_mode_override: None,
1050 get_field_editor_theme,
1051 project,
1052 scroll_position: Vector2F::zero(),
1053 scroll_top_anchor: Anchor::min(),
1054 autoscroll_request: None,
1055 focused: false,
1056 show_local_cursors: false,
1057 show_local_selections: true,
1058 blink_epoch: 0,
1059 blinking_paused: false,
1060 mode,
1061 vertical_scroll_margin: 3.0,
1062 placeholder_text: None,
1063 highlighted_rows: None,
1064 background_highlights: Default::default(),
1065 nav_history: None,
1066 context_menu: None,
1067 completion_tasks: Default::default(),
1068 next_completion_id: 0,
1069 available_code_actions: Default::default(),
1070 code_actions_task: Default::default(),
1071 document_highlights_task: Default::default(),
1072 pending_rename: Default::default(),
1073 searchable: true,
1074 override_text_style: None,
1075 cursor_shape: Default::default(),
1076 keymap_context_layers: Default::default(),
1077 input_enabled: true,
1078 leader_replica_id: None,
1079 };
1080 this.end_selection(cx);
1081
1082 let editor_created_event = EditorCreated(cx.handle());
1083 cx.emit_global(editor_created_event);
1084
1085 this
1086 }
1087
1088 pub fn open_new(
1089 workspace: &mut Workspace,
1090 _: &workspace::OpenNew,
1091 cx: &mut ViewContext<Workspace>,
1092 ) {
1093 let project = workspace.project().clone();
1094 if project.read(cx).is_remote() {
1095 cx.propagate_action();
1096 } else if let Some(buffer) = project
1097 .update(cx, |project, cx| project.create_buffer(cx))
1098 .log_err()
1099 {
1100 workspace.add_item(
1101 Box::new(cx.add_view(|cx| Editor::for_buffer(buffer, Some(project.clone()), cx))),
1102 cx,
1103 );
1104 }
1105 }
1106
1107 pub fn replica_id(&self, cx: &AppContext) -> ReplicaId {
1108 self.buffer.read(cx).replica_id()
1109 }
1110
1111 pub fn buffer(&self) -> &ModelHandle<MultiBuffer> {
1112 &self.buffer
1113 }
1114
1115 pub fn title(&self, cx: &AppContext) -> String {
1116 self.buffer().read(cx).title(cx)
1117 }
1118
1119 pub fn snapshot(&mut self, cx: &mut MutableAppContext) -> EditorSnapshot {
1120 EditorSnapshot {
1121 mode: self.mode,
1122 display_snapshot: self.display_map.update(cx, |map, cx| map.snapshot(cx)),
1123 scroll_position: self.scroll_position,
1124 scroll_top_anchor: self.scroll_top_anchor.clone(),
1125 placeholder_text: self.placeholder_text.clone(),
1126 is_focused: self
1127 .handle
1128 .upgrade(cx)
1129 .map_or(false, |handle| handle.is_focused(cx)),
1130 }
1131 }
1132
1133 pub fn language<'a>(&self, cx: &'a AppContext) -> Option<&'a Arc<Language>> {
1134 self.buffer.read(cx).language(cx)
1135 }
1136
1137 fn style(&self, cx: &AppContext) -> EditorStyle {
1138 build_style(
1139 cx.global::<Settings>(),
1140 self.get_field_editor_theme,
1141 self.override_text_style.as_deref(),
1142 cx,
1143 )
1144 }
1145
1146 pub fn mode(&self) -> EditorMode {
1147 self.mode
1148 }
1149
1150 pub fn set_placeholder_text(
1151 &mut self,
1152 placeholder_text: impl Into<Arc<str>>,
1153 cx: &mut ViewContext<Self>,
1154 ) {
1155 self.placeholder_text = Some(placeholder_text.into());
1156 cx.notify();
1157 }
1158
1159 pub fn set_vertical_scroll_margin(&mut self, margin_rows: usize, cx: &mut ViewContext<Self>) {
1160 self.vertical_scroll_margin = margin_rows as f32;
1161 cx.notify();
1162 }
1163
1164 pub fn set_scroll_position(&mut self, scroll_position: Vector2F, cx: &mut ViewContext<Self>) {
1165 self.set_scroll_position_internal(scroll_position, true, cx);
1166 }
1167
1168 fn set_scroll_position_internal(
1169 &mut self,
1170 scroll_position: Vector2F,
1171 local: bool,
1172 cx: &mut ViewContext<Self>,
1173 ) {
1174 let map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1175
1176 if scroll_position.y() == 0. {
1177 self.scroll_top_anchor = Anchor::min();
1178 self.scroll_position = scroll_position;
1179 } else {
1180 let scroll_top_buffer_offset =
1181 DisplayPoint::new(scroll_position.y() as u32, 0).to_offset(&map, Bias::Right);
1182 let anchor = map
1183 .buffer_snapshot
1184 .anchor_at(scroll_top_buffer_offset, Bias::Right);
1185 self.scroll_position = vec2f(
1186 scroll_position.x(),
1187 scroll_position.y() - anchor.to_display_point(&map).row() as f32,
1188 );
1189 self.scroll_top_anchor = anchor;
1190 }
1191
1192 cx.emit(Event::ScrollPositionChanged { local });
1193 cx.notify();
1194 }
1195
1196 fn set_scroll_top_anchor(
1197 &mut self,
1198 anchor: Anchor,
1199 position: Vector2F,
1200 cx: &mut ViewContext<Self>,
1201 ) {
1202 self.scroll_top_anchor = anchor;
1203 self.scroll_position = position;
1204 cx.emit(Event::ScrollPositionChanged { local: false });
1205 cx.notify();
1206 }
1207
1208 pub fn set_cursor_shape(&mut self, cursor_shape: CursorShape, cx: &mut ViewContext<Self>) {
1209 self.cursor_shape = cursor_shape;
1210 cx.notify();
1211 }
1212
1213 pub fn set_clip_at_line_ends(&mut self, clip: bool, cx: &mut ViewContext<Self>) {
1214 self.display_map
1215 .update(cx, |map, _| map.clip_at_line_ends = clip);
1216 }
1217
1218 pub fn set_keymap_context_layer<Tag: 'static>(&mut self, context: gpui::keymap::Context) {
1219 self.keymap_context_layers
1220 .insert(TypeId::of::<Tag>(), context);
1221 }
1222
1223 pub fn remove_keymap_context_layer<Tag: 'static>(&mut self) {
1224 self.keymap_context_layers.remove(&TypeId::of::<Tag>());
1225 }
1226
1227 pub fn set_input_enabled(&mut self, input_enabled: bool) {
1228 self.input_enabled = input_enabled;
1229 }
1230
1231 pub fn scroll_position(&self, cx: &mut ViewContext<Self>) -> Vector2F {
1232 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1233 compute_scroll_position(&display_map, self.scroll_position, &self.scroll_top_anchor)
1234 }
1235
1236 pub fn clamp_scroll_left(&mut self, max: f32) -> bool {
1237 if max < self.scroll_position.x() {
1238 self.scroll_position.set_x(max);
1239 true
1240 } else {
1241 false
1242 }
1243 }
1244
1245 pub fn autoscroll_vertically(
1246 &mut self,
1247 viewport_height: f32,
1248 line_height: f32,
1249 cx: &mut ViewContext<Self>,
1250 ) -> bool {
1251 let visible_lines = viewport_height / line_height;
1252 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1253 let mut scroll_position =
1254 compute_scroll_position(&display_map, self.scroll_position, &self.scroll_top_anchor);
1255 let max_scroll_top = if matches!(self.mode, EditorMode::AutoHeight { .. }) {
1256 (display_map.max_point().row() as f32 - visible_lines + 1.).max(0.)
1257 } else {
1258 display_map.max_point().row().saturating_sub(1) as f32
1259 };
1260 if scroll_position.y() > max_scroll_top {
1261 scroll_position.set_y(max_scroll_top);
1262 self.set_scroll_position(scroll_position, cx);
1263 }
1264
1265 let (autoscroll, local) = if let Some(autoscroll) = self.autoscroll_request.take() {
1266 autoscroll
1267 } else {
1268 return false;
1269 };
1270
1271 let first_cursor_top;
1272 let last_cursor_bottom;
1273 if let Some(highlighted_rows) = &self.highlighted_rows {
1274 first_cursor_top = highlighted_rows.start as f32;
1275 last_cursor_bottom = first_cursor_top + 1.;
1276 } else if autoscroll == Autoscroll::Newest {
1277 let newest_selection =
1278 self.newest_selection_with_snapshot::<Point>(&display_map.buffer_snapshot);
1279 first_cursor_top = newest_selection.head().to_display_point(&display_map).row() as f32;
1280 last_cursor_bottom = first_cursor_top + 1.;
1281 } else {
1282 let selections = self.local_selections::<Point>(cx);
1283 first_cursor_top = selections
1284 .first()
1285 .unwrap()
1286 .head()
1287 .to_display_point(&display_map)
1288 .row() as f32;
1289 last_cursor_bottom = selections
1290 .last()
1291 .unwrap()
1292 .head()
1293 .to_display_point(&display_map)
1294 .row() as f32
1295 + 1.0;
1296 }
1297
1298 let margin = if matches!(self.mode, EditorMode::AutoHeight { .. }) {
1299 0.
1300 } else {
1301 ((visible_lines - (last_cursor_bottom - first_cursor_top)) / 2.0).floor()
1302 };
1303 if margin < 0.0 {
1304 return false;
1305 }
1306
1307 match autoscroll {
1308 Autoscroll::Fit | Autoscroll::Newest => {
1309 let margin = margin.min(self.vertical_scroll_margin);
1310 let target_top = (first_cursor_top - margin).max(0.0);
1311 let target_bottom = last_cursor_bottom + margin;
1312 let start_row = scroll_position.y();
1313 let end_row = start_row + visible_lines;
1314
1315 if target_top < start_row {
1316 scroll_position.set_y(target_top);
1317 self.set_scroll_position_internal(scroll_position, local, cx);
1318 } else if target_bottom >= end_row {
1319 scroll_position.set_y(target_bottom - visible_lines);
1320 self.set_scroll_position_internal(scroll_position, local, cx);
1321 }
1322 }
1323 Autoscroll::Center => {
1324 scroll_position.set_y((first_cursor_top - margin).max(0.0));
1325 self.set_scroll_position_internal(scroll_position, local, cx);
1326 }
1327 }
1328
1329 true
1330 }
1331
1332 pub fn autoscroll_horizontally(
1333 &mut self,
1334 start_row: u32,
1335 viewport_width: f32,
1336 scroll_width: f32,
1337 max_glyph_width: f32,
1338 layouts: &[text_layout::Line],
1339 cx: &mut ViewContext<Self>,
1340 ) -> bool {
1341 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1342 let selections = self.local_selections::<Point>(cx);
1343
1344 let mut target_left;
1345 let mut target_right;
1346
1347 if self.highlighted_rows.is_some() {
1348 target_left = 0.0_f32;
1349 target_right = 0.0_f32;
1350 } else {
1351 target_left = std::f32::INFINITY;
1352 target_right = 0.0_f32;
1353 for selection in selections {
1354 let head = selection.head().to_display_point(&display_map);
1355 if head.row() >= start_row && head.row() < start_row + layouts.len() as u32 {
1356 let start_column = head.column().saturating_sub(3);
1357 let end_column = cmp::min(display_map.line_len(head.row()), head.column() + 3);
1358 target_left = target_left.min(
1359 layouts[(head.row() - start_row) as usize]
1360 .x_for_index(start_column as usize),
1361 );
1362 target_right = target_right.max(
1363 layouts[(head.row() - start_row) as usize].x_for_index(end_column as usize)
1364 + max_glyph_width,
1365 );
1366 }
1367 }
1368 }
1369
1370 target_right = target_right.min(scroll_width);
1371
1372 if target_right - target_left > viewport_width {
1373 return false;
1374 }
1375
1376 let scroll_left = self.scroll_position.x() * max_glyph_width;
1377 let scroll_right = scroll_left + viewport_width;
1378
1379 if target_left < scroll_left {
1380 self.scroll_position.set_x(target_left / max_glyph_width);
1381 true
1382 } else if target_right > scroll_right {
1383 self.scroll_position
1384 .set_x((target_right - viewport_width) / max_glyph_width);
1385 true
1386 } else {
1387 false
1388 }
1389 }
1390
1391 pub fn move_selections(
1392 &mut self,
1393 cx: &mut ViewContext<Self>,
1394 move_selection: impl Fn(&DisplaySnapshot, &mut Selection<DisplayPoint>),
1395 ) {
1396 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1397 let selections = self
1398 .local_selections::<Point>(cx)
1399 .into_iter()
1400 .map(|selection| {
1401 let mut selection = Selection {
1402 id: selection.id,
1403 start: selection.start.to_display_point(&display_map),
1404 end: selection.end.to_display_point(&display_map),
1405 reversed: selection.reversed,
1406 goal: selection.goal,
1407 };
1408 move_selection(&display_map, &mut selection);
1409 Selection {
1410 id: selection.id,
1411 start: selection.start.to_point(&display_map),
1412 end: selection.end.to_point(&display_map),
1413 reversed: selection.reversed,
1414 goal: selection.goal,
1415 }
1416 })
1417 .collect();
1418 self.update_selections(selections, Some(Autoscroll::Fit), cx);
1419 }
1420
1421 pub fn move_selection_heads(
1422 &mut self,
1423 cx: &mut ViewContext<Self>,
1424 update_head: impl Fn(
1425 &DisplaySnapshot,
1426 DisplayPoint,
1427 SelectionGoal,
1428 ) -> (DisplayPoint, SelectionGoal),
1429 ) {
1430 self.move_selections(cx, |map, selection| {
1431 let (new_head, new_goal) = update_head(map, selection.head(), selection.goal);
1432 selection.set_head(new_head, new_goal);
1433 });
1434 }
1435
1436 pub fn move_cursors(
1437 &mut self,
1438 cx: &mut ViewContext<Self>,
1439 update_cursor_position: impl Fn(
1440 &DisplaySnapshot,
1441 DisplayPoint,
1442 SelectionGoal,
1443 ) -> (DisplayPoint, SelectionGoal),
1444 ) {
1445 self.move_selections(cx, |map, selection| {
1446 let (cursor, new_goal) = update_cursor_position(map, selection.head(), selection.goal);
1447 selection.collapse_to(cursor, new_goal)
1448 });
1449 }
1450
1451 fn select(&mut self, Select(phase): &Select, cx: &mut ViewContext<Self>) {
1452 self.hide_context_menu(cx);
1453
1454 match phase {
1455 SelectPhase::Begin {
1456 position,
1457 add,
1458 click_count,
1459 } => self.begin_selection(*position, *add, *click_count, cx),
1460 SelectPhase::BeginColumnar {
1461 position,
1462 overshoot,
1463 } => self.begin_columnar_selection(*position, *overshoot, cx),
1464 SelectPhase::Extend {
1465 position,
1466 click_count,
1467 } => self.extend_selection(*position, *click_count, cx),
1468 SelectPhase::Update {
1469 position,
1470 overshoot,
1471 scroll_position,
1472 } => self.update_selection(*position, *overshoot, *scroll_position, cx),
1473 SelectPhase::End => self.end_selection(cx),
1474 }
1475 }
1476
1477 fn extend_selection(
1478 &mut self,
1479 position: DisplayPoint,
1480 click_count: usize,
1481 cx: &mut ViewContext<Self>,
1482 ) {
1483 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1484 let tail = self
1485 .newest_selection_with_snapshot::<usize>(&display_map.buffer_snapshot)
1486 .tail();
1487 self.begin_selection(position, false, click_count, cx);
1488
1489 let position = position.to_offset(&display_map, Bias::Left);
1490 let tail_anchor = display_map.buffer_snapshot.anchor_before(tail);
1491 let mut pending = self.pending_selection.clone().unwrap();
1492
1493 if position >= tail {
1494 pending.selection.start = tail_anchor.clone();
1495 } else {
1496 pending.selection.end = tail_anchor.clone();
1497 pending.selection.reversed = true;
1498 }
1499
1500 match &mut pending.mode {
1501 SelectMode::Word(range) | SelectMode::Line(range) => {
1502 *range = tail_anchor.clone()..tail_anchor
1503 }
1504 _ => {}
1505 }
1506
1507 self.set_selections(self.selections.clone(), Some(pending), true, cx);
1508 }
1509
1510 fn begin_selection(
1511 &mut self,
1512 position: DisplayPoint,
1513 add: bool,
1514 click_count: usize,
1515 cx: &mut ViewContext<Self>,
1516 ) {
1517 if !self.focused {
1518 cx.focus_self();
1519 cx.emit(Event::Activate);
1520 }
1521
1522 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1523 let buffer = &display_map.buffer_snapshot;
1524 let newest_selection = self.newest_anchor_selection().clone();
1525
1526 let start;
1527 let end;
1528 let mode;
1529 match click_count {
1530 1 => {
1531 start = buffer.anchor_before(position.to_point(&display_map));
1532 end = start.clone();
1533 mode = SelectMode::Character;
1534 }
1535 2 => {
1536 let range = movement::surrounding_word(&display_map, position);
1537 start = buffer.anchor_before(range.start.to_point(&display_map));
1538 end = buffer.anchor_before(range.end.to_point(&display_map));
1539 mode = SelectMode::Word(start.clone()..end.clone());
1540 }
1541 3 => {
1542 let position = display_map
1543 .clip_point(position, Bias::Left)
1544 .to_point(&display_map);
1545 let line_start = display_map.prev_line_boundary(position).0;
1546 let next_line_start = buffer.clip_point(
1547 display_map.next_line_boundary(position).0 + Point::new(1, 0),
1548 Bias::Left,
1549 );
1550 start = buffer.anchor_before(line_start);
1551 end = buffer.anchor_before(next_line_start);
1552 mode = SelectMode::Line(start.clone()..end.clone());
1553 }
1554 _ => {
1555 start = buffer.anchor_before(0);
1556 end = buffer.anchor_before(buffer.len());
1557 mode = SelectMode::All;
1558 }
1559 }
1560
1561 let selection = Selection {
1562 id: post_inc(&mut self.next_selection_id),
1563 start,
1564 end,
1565 reversed: false,
1566 goal: SelectionGoal::None,
1567 };
1568
1569 let mut selections;
1570 if add {
1571 selections = self.selections.clone();
1572 // Remove the newest selection if it was added due to a previous mouse up
1573 // within this multi-click.
1574 if click_count > 1 {
1575 selections = self
1576 .selections
1577 .iter()
1578 .filter(|selection| selection.id != newest_selection.id)
1579 .cloned()
1580 .collect();
1581 }
1582 } else {
1583 selections = Arc::from([]);
1584 }
1585 self.set_selections(
1586 selections,
1587 Some(PendingSelection { selection, mode }),
1588 true,
1589 cx,
1590 );
1591
1592 cx.notify();
1593 }
1594
1595 fn begin_columnar_selection(
1596 &mut self,
1597 position: DisplayPoint,
1598 overshoot: u32,
1599 cx: &mut ViewContext<Self>,
1600 ) {
1601 if !self.focused {
1602 cx.focus_self();
1603 cx.emit(Event::Activate);
1604 }
1605
1606 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1607 let tail = self
1608 .newest_selection_with_snapshot::<Point>(&display_map.buffer_snapshot)
1609 .tail();
1610 self.columnar_selection_tail = Some(display_map.buffer_snapshot.anchor_before(tail));
1611
1612 self.select_columns(
1613 tail.to_display_point(&display_map),
1614 position,
1615 overshoot,
1616 &display_map,
1617 cx,
1618 );
1619 }
1620
1621 fn update_selection(
1622 &mut self,
1623 position: DisplayPoint,
1624 overshoot: u32,
1625 scroll_position: Vector2F,
1626 cx: &mut ViewContext<Self>,
1627 ) {
1628 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1629
1630 if let Some(tail) = self.columnar_selection_tail.as_ref() {
1631 let tail = tail.to_display_point(&display_map);
1632 self.select_columns(tail, position, overshoot, &display_map, cx);
1633 } else if let Some(mut pending) = self.pending_selection.clone() {
1634 let buffer = self.buffer.read(cx).snapshot(cx);
1635 let head;
1636 let tail;
1637 match &pending.mode {
1638 SelectMode::Character => {
1639 head = position.to_point(&display_map);
1640 tail = pending.selection.tail().to_point(&buffer);
1641 }
1642 SelectMode::Word(original_range) => {
1643 let original_display_range = original_range.start.to_display_point(&display_map)
1644 ..original_range.end.to_display_point(&display_map);
1645 let original_buffer_range = original_display_range.start.to_point(&display_map)
1646 ..original_display_range.end.to_point(&display_map);
1647 if movement::is_inside_word(&display_map, position)
1648 || original_display_range.contains(&position)
1649 {
1650 let word_range = movement::surrounding_word(&display_map, position);
1651 if word_range.start < original_display_range.start {
1652 head = word_range.start.to_point(&display_map);
1653 } else {
1654 head = word_range.end.to_point(&display_map);
1655 }
1656 } else {
1657 head = position.to_point(&display_map);
1658 }
1659
1660 if head <= original_buffer_range.start {
1661 tail = original_buffer_range.end;
1662 } else {
1663 tail = original_buffer_range.start;
1664 }
1665 }
1666 SelectMode::Line(original_range) => {
1667 let original_range = original_range.to_point(&display_map.buffer_snapshot);
1668
1669 let position = display_map
1670 .clip_point(position, Bias::Left)
1671 .to_point(&display_map);
1672 let line_start = display_map.prev_line_boundary(position).0;
1673 let next_line_start = buffer.clip_point(
1674 display_map.next_line_boundary(position).0 + Point::new(1, 0),
1675 Bias::Left,
1676 );
1677
1678 if line_start < original_range.start {
1679 head = line_start
1680 } else {
1681 head = next_line_start
1682 }
1683
1684 if head <= original_range.start {
1685 tail = original_range.end;
1686 } else {
1687 tail = original_range.start;
1688 }
1689 }
1690 SelectMode::All => {
1691 return;
1692 }
1693 };
1694
1695 if head < tail {
1696 pending.selection.start = buffer.anchor_before(head);
1697 pending.selection.end = buffer.anchor_before(tail);
1698 pending.selection.reversed = true;
1699 } else {
1700 pending.selection.start = buffer.anchor_before(tail);
1701 pending.selection.end = buffer.anchor_before(head);
1702 pending.selection.reversed = false;
1703 }
1704 self.set_selections(self.selections.clone(), Some(pending), true, cx);
1705 } else {
1706 log::error!("update_selection dispatched with no pending selection");
1707 return;
1708 }
1709
1710 self.set_scroll_position(scroll_position, cx);
1711 cx.notify();
1712 }
1713
1714 fn end_selection(&mut self, cx: &mut ViewContext<Self>) {
1715 self.columnar_selection_tail.take();
1716 if self.pending_selection.is_some() {
1717 let selections = self.local_selections::<usize>(cx);
1718 self.update_selections(selections, None, cx);
1719 }
1720 }
1721
1722 fn select_columns(
1723 &mut self,
1724 tail: DisplayPoint,
1725 head: DisplayPoint,
1726 overshoot: u32,
1727 display_map: &DisplaySnapshot,
1728 cx: &mut ViewContext<Self>,
1729 ) {
1730 let start_row = cmp::min(tail.row(), head.row());
1731 let end_row = cmp::max(tail.row(), head.row());
1732 let start_column = cmp::min(tail.column(), head.column() + overshoot);
1733 let end_column = cmp::max(tail.column(), head.column() + overshoot);
1734 let reversed = start_column < tail.column();
1735
1736 let selections = (start_row..=end_row)
1737 .filter_map(|row| {
1738 if start_column <= display_map.line_len(row) && !display_map.is_block_line(row) {
1739 let start = display_map
1740 .clip_point(DisplayPoint::new(row, start_column), Bias::Left)
1741 .to_point(&display_map);
1742 let end = display_map
1743 .clip_point(DisplayPoint::new(row, end_column), Bias::Right)
1744 .to_point(&display_map);
1745 Some(Selection {
1746 id: post_inc(&mut self.next_selection_id),
1747 start,
1748 end,
1749 reversed,
1750 goal: SelectionGoal::None,
1751 })
1752 } else {
1753 None
1754 }
1755 })
1756 .collect::<Vec<_>>();
1757
1758 self.update_selections(selections, None, cx);
1759 cx.notify();
1760 }
1761
1762 pub fn is_selecting(&self) -> bool {
1763 self.pending_selection.is_some() || self.columnar_selection_tail.is_some()
1764 }
1765
1766 pub fn cancel(&mut self, _: &Cancel, cx: &mut ViewContext<Self>) {
1767 if self.take_rename(false, cx).is_some() {
1768 return;
1769 }
1770
1771 if self.hide_context_menu(cx).is_some() {
1772 return;
1773 }
1774
1775 if self.snippet_stack.pop().is_some() {
1776 return;
1777 }
1778
1779 if self.mode != EditorMode::Full {
1780 cx.propagate_action();
1781 return;
1782 }
1783
1784 if self.active_diagnostics.is_some() {
1785 self.dismiss_diagnostics(cx);
1786 } else if let Some(pending) = self.pending_selection.clone() {
1787 let mut selections = self.selections.clone();
1788 if selections.is_empty() {
1789 selections = Arc::from([pending.selection]);
1790 }
1791 self.set_selections(selections, None, true, cx);
1792 self.request_autoscroll(Autoscroll::Fit, cx);
1793 } else {
1794 let mut oldest_selection = self.oldest_selection::<usize>(&cx);
1795 if self.selection_count() == 1 {
1796 if oldest_selection.is_empty() {
1797 cx.propagate_action();
1798 return;
1799 }
1800
1801 oldest_selection.start = oldest_selection.head().clone();
1802 oldest_selection.end = oldest_selection.head().clone();
1803 }
1804 self.update_selections(vec![oldest_selection], Some(Autoscroll::Fit), cx);
1805 }
1806 }
1807
1808 #[cfg(any(test, feature = "test-support"))]
1809 pub fn selected_ranges<D: TextDimension + Ord + Sub<D, Output = D>>(
1810 &self,
1811 cx: &AppContext,
1812 ) -> Vec<Range<D>> {
1813 self.local_selections::<D>(cx)
1814 .iter()
1815 .map(|s| {
1816 if s.reversed {
1817 s.end.clone()..s.start.clone()
1818 } else {
1819 s.start.clone()..s.end.clone()
1820 }
1821 })
1822 .collect()
1823 }
1824
1825 #[cfg(any(test, feature = "test-support"))]
1826 pub fn selected_display_ranges(&self, cx: &mut MutableAppContext) -> Vec<Range<DisplayPoint>> {
1827 let display_map = self
1828 .display_map
1829 .update(cx, |display_map, cx| display_map.snapshot(cx));
1830 self.selections
1831 .iter()
1832 .chain(
1833 self.pending_selection
1834 .as_ref()
1835 .map(|pending| &pending.selection),
1836 )
1837 .map(|s| {
1838 if s.reversed {
1839 s.end.to_display_point(&display_map)..s.start.to_display_point(&display_map)
1840 } else {
1841 s.start.to_display_point(&display_map)..s.end.to_display_point(&display_map)
1842 }
1843 })
1844 .collect()
1845 }
1846
1847 pub fn select_ranges<I, T>(
1848 &mut self,
1849 ranges: I,
1850 autoscroll: Option<Autoscroll>,
1851 cx: &mut ViewContext<Self>,
1852 ) where
1853 I: IntoIterator<Item = Range<T>>,
1854 T: ToOffset,
1855 {
1856 let buffer = self.buffer.read(cx).snapshot(cx);
1857 let selections = ranges
1858 .into_iter()
1859 .map(|range| {
1860 let mut start = range.start.to_offset(&buffer);
1861 let mut end = range.end.to_offset(&buffer);
1862 let reversed = if start > end {
1863 mem::swap(&mut start, &mut end);
1864 true
1865 } else {
1866 false
1867 };
1868 Selection {
1869 id: post_inc(&mut self.next_selection_id),
1870 start,
1871 end,
1872 reversed,
1873 goal: SelectionGoal::None,
1874 }
1875 })
1876 .collect::<Vec<_>>();
1877 self.update_selections(selections, autoscroll, cx);
1878 }
1879
1880 #[cfg(any(test, feature = "test-support"))]
1881 pub fn select_display_ranges<'a, T>(&mut self, ranges: T, cx: &mut ViewContext<Self>)
1882 where
1883 T: IntoIterator<Item = &'a Range<DisplayPoint>>,
1884 {
1885 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1886 let selections = ranges
1887 .into_iter()
1888 .map(|range| {
1889 let mut start = range.start;
1890 let mut end = range.end;
1891 let reversed = if start > end {
1892 mem::swap(&mut start, &mut end);
1893 true
1894 } else {
1895 false
1896 };
1897 Selection {
1898 id: post_inc(&mut self.next_selection_id),
1899 start: start.to_point(&display_map),
1900 end: end.to_point(&display_map),
1901 reversed,
1902 goal: SelectionGoal::None,
1903 }
1904 })
1905 .collect();
1906 self.update_selections(selections, None, cx);
1907 }
1908
1909 pub fn handle_input(&mut self, action: &Input, cx: &mut ViewContext<Self>) {
1910 if !self.input_enabled {
1911 cx.propagate_action();
1912 return;
1913 }
1914
1915 let text = action.0.as_ref();
1916 if !self.skip_autoclose_end(text, cx) {
1917 self.transact(cx, |this, cx| {
1918 if !this.surround_with_bracket_pair(text, cx) {
1919 this.insert(text, cx);
1920 this.autoclose_bracket_pairs(cx);
1921 }
1922 });
1923 self.trigger_completion_on_input(text, cx);
1924 }
1925 }
1926
1927 pub fn newline(&mut self, _: &Newline, cx: &mut ViewContext<Self>) {
1928 self.transact(cx, |this, cx| {
1929 let mut old_selections = SmallVec::<[_; 32]>::new();
1930 {
1931 let selections = this.local_selections::<usize>(cx);
1932 let buffer = this.buffer.read(cx).snapshot(cx);
1933 for selection in selections.iter() {
1934 let start_point = selection.start.to_point(&buffer);
1935 let indent = buffer
1936 .indent_column_for_line(start_point.row)
1937 .min(start_point.column);
1938 let start = selection.start;
1939 let end = selection.end;
1940
1941 let mut insert_extra_newline = false;
1942 if let Some(language) = buffer.language() {
1943 let leading_whitespace_len = buffer
1944 .reversed_chars_at(start)
1945 .take_while(|c| c.is_whitespace() && *c != '\n')
1946 .map(|c| c.len_utf8())
1947 .sum::<usize>();
1948
1949 let trailing_whitespace_len = buffer
1950 .chars_at(end)
1951 .take_while(|c| c.is_whitespace() && *c != '\n')
1952 .map(|c| c.len_utf8())
1953 .sum::<usize>();
1954
1955 insert_extra_newline = language.brackets().iter().any(|pair| {
1956 let pair_start = pair.start.trim_end();
1957 let pair_end = pair.end.trim_start();
1958
1959 pair.newline
1960 && buffer.contains_str_at(end + trailing_whitespace_len, pair_end)
1961 && buffer.contains_str_at(
1962 (start - leading_whitespace_len)
1963 .saturating_sub(pair_start.len()),
1964 pair_start,
1965 )
1966 });
1967 }
1968
1969 old_selections.push((
1970 selection.id,
1971 buffer.anchor_after(end),
1972 start..end,
1973 indent,
1974 insert_extra_newline,
1975 ));
1976 }
1977 }
1978
1979 this.buffer.update(cx, |buffer, cx| {
1980 let mut delta = 0_isize;
1981 let mut pending_edit: Option<PendingEdit> = None;
1982 for (_, _, range, indent, insert_extra_newline) in &old_selections {
1983 if pending_edit.as_ref().map_or(false, |pending| {
1984 pending.indent != *indent
1985 || pending.insert_extra_newline != *insert_extra_newline
1986 }) {
1987 let pending = pending_edit.take().unwrap();
1988 let mut new_text = String::with_capacity(1 + pending.indent as usize);
1989 new_text.push('\n');
1990 new_text.extend(iter::repeat(' ').take(pending.indent as usize));
1991 if pending.insert_extra_newline {
1992 new_text = new_text.repeat(2);
1993 }
1994 buffer.edit_with_autoindent(pending.ranges, new_text, cx);
1995 delta += pending.delta;
1996 }
1997
1998 let start = (range.start as isize + delta) as usize;
1999 let end = (range.end as isize + delta) as usize;
2000 let mut text_len = *indent as usize + 1;
2001 if *insert_extra_newline {
2002 text_len *= 2;
2003 }
2004
2005 let pending = pending_edit.get_or_insert_with(Default::default);
2006 pending.delta += text_len as isize - (end - start) as isize;
2007 pending.indent = *indent;
2008 pending.insert_extra_newline = *insert_extra_newline;
2009 pending.ranges.push(start..end);
2010 }
2011
2012 let pending = pending_edit.unwrap();
2013 let mut new_text = String::with_capacity(1 + pending.indent as usize);
2014 new_text.push('\n');
2015 new_text.extend(iter::repeat(' ').take(pending.indent as usize));
2016 if pending.insert_extra_newline {
2017 new_text = new_text.repeat(2);
2018 }
2019 buffer.edit_with_autoindent(pending.ranges, new_text, cx);
2020
2021 let buffer = buffer.read(cx);
2022 this.selections = this
2023 .selections
2024 .iter()
2025 .cloned()
2026 .zip(old_selections)
2027 .map(
2028 |(mut new_selection, (_, end_anchor, _, _, insert_extra_newline))| {
2029 let mut cursor = end_anchor.to_point(&buffer);
2030 if insert_extra_newline {
2031 cursor.row -= 1;
2032 cursor.column = buffer.line_len(cursor.row);
2033 }
2034 let anchor = buffer.anchor_after(cursor);
2035 new_selection.start = anchor.clone();
2036 new_selection.end = anchor;
2037 new_selection
2038 },
2039 )
2040 .collect();
2041 });
2042
2043 this.request_autoscroll(Autoscroll::Fit, cx);
2044 });
2045
2046 #[derive(Default)]
2047 struct PendingEdit {
2048 indent: u32,
2049 insert_extra_newline: bool,
2050 delta: isize,
2051 ranges: SmallVec<[Range<usize>; 32]>,
2052 }
2053 }
2054
2055 pub fn insert(&mut self, text: &str, cx: &mut ViewContext<Self>) {
2056 self.transact(cx, |this, cx| {
2057 let old_selections = this.local_selections::<usize>(cx);
2058 let selection_anchors = this.buffer.update(cx, |buffer, cx| {
2059 let anchors = {
2060 let snapshot = buffer.read(cx);
2061 old_selections
2062 .iter()
2063 .map(|s| (s.id, s.goal, snapshot.anchor_after(s.end)))
2064 .collect::<Vec<_>>()
2065 };
2066 let edit_ranges = old_selections.iter().map(|s| s.start..s.end);
2067 buffer.edit_with_autoindent(edit_ranges, text, cx);
2068 anchors
2069 });
2070
2071 let selections = {
2072 let snapshot = this.buffer.read(cx).read(cx);
2073 selection_anchors
2074 .into_iter()
2075 .map(|(id, goal, position)| {
2076 let position = position.to_offset(&snapshot);
2077 Selection {
2078 id,
2079 start: position,
2080 end: position,
2081 goal,
2082 reversed: false,
2083 }
2084 })
2085 .collect()
2086 };
2087 this.update_selections(selections, Some(Autoscroll::Fit), cx);
2088 });
2089 }
2090
2091 fn trigger_completion_on_input(&mut self, text: &str, cx: &mut ViewContext<Self>) {
2092 let selection = self.newest_anchor_selection();
2093 if self
2094 .buffer
2095 .read(cx)
2096 .is_completion_trigger(selection.head(), text, cx)
2097 {
2098 self.show_completions(&ShowCompletions, cx);
2099 } else {
2100 self.hide_context_menu(cx);
2101 }
2102 }
2103
2104 fn surround_with_bracket_pair(&mut self, text: &str, cx: &mut ViewContext<Self>) -> bool {
2105 let snapshot = self.buffer.read(cx).snapshot(cx);
2106 if let Some(pair) = snapshot
2107 .language()
2108 .and_then(|language| language.brackets().iter().find(|b| b.start == text))
2109 .cloned()
2110 {
2111 if self
2112 .local_selections::<usize>(cx)
2113 .iter()
2114 .any(|selection| selection.is_empty())
2115 {
2116 false
2117 } else {
2118 let mut selections = self.selections.to_vec();
2119 for selection in &mut selections {
2120 selection.end = selection.end.bias_left(&snapshot);
2121 }
2122 drop(snapshot);
2123
2124 self.buffer.update(cx, |buffer, cx| {
2125 buffer.edit(
2126 selections.iter().map(|s| s.start.clone()..s.start.clone()),
2127 &pair.start,
2128 cx,
2129 );
2130 buffer.edit(
2131 selections.iter().map(|s| s.end.clone()..s.end.clone()),
2132 &pair.end,
2133 cx,
2134 );
2135 });
2136
2137 let snapshot = self.buffer.read(cx).read(cx);
2138 for selection in &mut selections {
2139 selection.end = selection.end.bias_right(&snapshot);
2140 }
2141 drop(snapshot);
2142
2143 self.set_selections(selections.into(), None, true, cx);
2144 true
2145 }
2146 } else {
2147 false
2148 }
2149 }
2150
2151 fn autoclose_bracket_pairs(&mut self, cx: &mut ViewContext<Self>) {
2152 let selections = self.local_selections::<usize>(cx);
2153 let mut bracket_pair_state = None;
2154 let mut new_selections = None;
2155 self.buffer.update(cx, |buffer, cx| {
2156 let mut snapshot = buffer.snapshot(cx);
2157 let left_biased_selections = selections
2158 .iter()
2159 .map(|selection| Selection {
2160 id: selection.id,
2161 start: snapshot.anchor_before(selection.start),
2162 end: snapshot.anchor_before(selection.end),
2163 reversed: selection.reversed,
2164 goal: selection.goal,
2165 })
2166 .collect::<Vec<_>>();
2167
2168 let autoclose_pair = snapshot.language().and_then(|language| {
2169 let first_selection_start = selections.first().unwrap().start;
2170 let pair = language.brackets().iter().find(|pair| {
2171 snapshot.contains_str_at(
2172 first_selection_start.saturating_sub(pair.start.len()),
2173 &pair.start,
2174 )
2175 });
2176 pair.and_then(|pair| {
2177 let should_autoclose = selections.iter().all(|selection| {
2178 // Ensure all selections are parked at the end of a pair start.
2179 if snapshot.contains_str_at(
2180 selection.start.saturating_sub(pair.start.len()),
2181 &pair.start,
2182 ) {
2183 snapshot
2184 .chars_at(selection.start)
2185 .next()
2186 .map_or(true, |c| language.should_autoclose_before(c))
2187 } else {
2188 false
2189 }
2190 });
2191
2192 if should_autoclose {
2193 Some(pair.clone())
2194 } else {
2195 None
2196 }
2197 })
2198 });
2199
2200 if let Some(pair) = autoclose_pair {
2201 let selection_ranges = selections
2202 .iter()
2203 .map(|selection| {
2204 let start = selection.start.to_offset(&snapshot);
2205 start..start
2206 })
2207 .collect::<SmallVec<[_; 32]>>();
2208
2209 buffer.edit(selection_ranges, &pair.end, cx);
2210 snapshot = buffer.snapshot(cx);
2211
2212 new_selections = Some(
2213 self.resolve_selections::<usize, _>(left_biased_selections.iter(), &snapshot)
2214 .collect::<Vec<_>>(),
2215 );
2216
2217 if pair.end.len() == 1 {
2218 let mut delta = 0;
2219 bracket_pair_state = Some(BracketPairState {
2220 ranges: selections
2221 .iter()
2222 .map(move |selection| {
2223 let offset = selection.start + delta;
2224 delta += 1;
2225 snapshot.anchor_before(offset)..snapshot.anchor_after(offset)
2226 })
2227 .collect(),
2228 pair,
2229 });
2230 }
2231 }
2232 });
2233
2234 if let Some(new_selections) = new_selections {
2235 self.update_selections(new_selections, None, cx);
2236 }
2237 if let Some(bracket_pair_state) = bracket_pair_state {
2238 self.autoclose_stack.push(bracket_pair_state);
2239 }
2240 }
2241
2242 fn skip_autoclose_end(&mut self, text: &str, cx: &mut ViewContext<Self>) -> bool {
2243 let old_selections = self.local_selections::<usize>(cx);
2244 let autoclose_pair = if let Some(autoclose_pair) = self.autoclose_stack.last() {
2245 autoclose_pair
2246 } else {
2247 return false;
2248 };
2249 if text != autoclose_pair.pair.end {
2250 return false;
2251 }
2252
2253 debug_assert_eq!(old_selections.len(), autoclose_pair.ranges.len());
2254
2255 let buffer = self.buffer.read(cx).snapshot(cx);
2256 if old_selections
2257 .iter()
2258 .zip(autoclose_pair.ranges.iter().map(|r| r.to_offset(&buffer)))
2259 .all(|(selection, autoclose_range)| {
2260 let autoclose_range_end = autoclose_range.end.to_offset(&buffer);
2261 selection.is_empty() && selection.start == autoclose_range_end
2262 })
2263 {
2264 let new_selections = old_selections
2265 .into_iter()
2266 .map(|selection| {
2267 let cursor = selection.start + 1;
2268 Selection {
2269 id: selection.id,
2270 start: cursor,
2271 end: cursor,
2272 reversed: false,
2273 goal: SelectionGoal::None,
2274 }
2275 })
2276 .collect();
2277 self.autoclose_stack.pop();
2278 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
2279 true
2280 } else {
2281 false
2282 }
2283 }
2284
2285 fn completion_query(buffer: &MultiBufferSnapshot, position: impl ToOffset) -> Option<String> {
2286 let offset = position.to_offset(buffer);
2287 let (word_range, kind) = buffer.surrounding_word(offset);
2288 if offset > word_range.start && kind == Some(CharKind::Word) {
2289 Some(
2290 buffer
2291 .text_for_range(word_range.start..offset)
2292 .collect::<String>(),
2293 )
2294 } else {
2295 None
2296 }
2297 }
2298
2299 fn show_completions(&mut self, _: &ShowCompletions, cx: &mut ViewContext<Self>) {
2300 if self.pending_rename.is_some() {
2301 return;
2302 }
2303
2304 let project = if let Some(project) = self.project.clone() {
2305 project
2306 } else {
2307 return;
2308 };
2309
2310 let position = self.newest_anchor_selection().head();
2311 let (buffer, buffer_position) = if let Some(output) = self
2312 .buffer
2313 .read(cx)
2314 .text_anchor_for_position(position.clone(), cx)
2315 {
2316 output
2317 } else {
2318 return;
2319 };
2320
2321 let query = Self::completion_query(&self.buffer.read(cx).read(cx), position.clone());
2322 let completions = project.update(cx, |project, cx| {
2323 project.completions(&buffer, buffer_position.clone(), cx)
2324 });
2325
2326 let id = post_inc(&mut self.next_completion_id);
2327 let task = cx.spawn_weak(|this, mut cx| {
2328 async move {
2329 let completions = completions.await?;
2330 if completions.is_empty() {
2331 return Ok(());
2332 }
2333
2334 let mut menu = CompletionsMenu {
2335 id,
2336 initial_position: position,
2337 match_candidates: completions
2338 .iter()
2339 .enumerate()
2340 .map(|(id, completion)| {
2341 StringMatchCandidate::new(
2342 id,
2343 completion.label.text[completion.label.filter_range.clone()].into(),
2344 )
2345 })
2346 .collect(),
2347 buffer,
2348 completions: completions.into(),
2349 matches: Vec::new().into(),
2350 selected_item: 0,
2351 list: Default::default(),
2352 };
2353
2354 menu.filter(query.as_deref(), cx.background()).await;
2355
2356 if let Some(this) = this.upgrade(&cx) {
2357 this.update(&mut cx, |this, cx| {
2358 match this.context_menu.as_ref() {
2359 None => {}
2360 Some(ContextMenu::Completions(prev_menu)) => {
2361 if prev_menu.id > menu.id {
2362 return;
2363 }
2364 }
2365 _ => return,
2366 }
2367
2368 this.completion_tasks.retain(|(id, _)| *id > menu.id);
2369 if this.focused {
2370 this.show_context_menu(ContextMenu::Completions(menu), cx);
2371 }
2372
2373 cx.notify();
2374 });
2375 }
2376 Ok::<_, anyhow::Error>(())
2377 }
2378 .log_err()
2379 });
2380 self.completion_tasks.push((id, task));
2381 }
2382
2383 pub fn confirm_completion(
2384 &mut self,
2385 ConfirmCompletion(completion_ix): &ConfirmCompletion,
2386 cx: &mut ViewContext<Self>,
2387 ) -> Option<Task<Result<()>>> {
2388 use language::ToOffset as _;
2389
2390 let completions_menu = if let ContextMenu::Completions(menu) = self.hide_context_menu(cx)? {
2391 menu
2392 } else {
2393 return None;
2394 };
2395
2396 let mat = completions_menu
2397 .matches
2398 .get(completion_ix.unwrap_or(completions_menu.selected_item))?;
2399 let buffer_handle = completions_menu.buffer;
2400 let completion = completions_menu.completions.get(mat.candidate_id)?;
2401
2402 let snippet;
2403 let text;
2404 if completion.is_snippet() {
2405 snippet = Some(Snippet::parse(&completion.new_text).log_err()?);
2406 text = snippet.as_ref().unwrap().text.clone();
2407 } else {
2408 snippet = None;
2409 text = completion.new_text.clone();
2410 };
2411 let buffer = buffer_handle.read(cx);
2412 let old_range = completion.old_range.to_offset(&buffer);
2413 let old_text = buffer.text_for_range(old_range.clone()).collect::<String>();
2414
2415 let selections = self.local_selections::<usize>(cx);
2416 let newest_selection = self.newest_anchor_selection();
2417 if newest_selection.start.buffer_id != Some(buffer_handle.id()) {
2418 return None;
2419 }
2420
2421 let lookbehind = newest_selection
2422 .start
2423 .text_anchor
2424 .to_offset(buffer)
2425 .saturating_sub(old_range.start);
2426 let lookahead = old_range
2427 .end
2428 .saturating_sub(newest_selection.end.text_anchor.to_offset(buffer));
2429 let mut common_prefix_len = old_text
2430 .bytes()
2431 .zip(text.bytes())
2432 .take_while(|(a, b)| a == b)
2433 .count();
2434
2435 let snapshot = self.buffer.read(cx).snapshot(cx);
2436 let mut ranges = Vec::new();
2437 for selection in &selections {
2438 if snapshot.contains_str_at(selection.start.saturating_sub(lookbehind), &old_text) {
2439 let start = selection.start.saturating_sub(lookbehind);
2440 let end = selection.end + lookahead;
2441 ranges.push(start + common_prefix_len..end);
2442 } else {
2443 common_prefix_len = 0;
2444 ranges.clear();
2445 ranges.extend(selections.iter().map(|s| {
2446 if s.id == newest_selection.id {
2447 old_range.clone()
2448 } else {
2449 s.start..s.end
2450 }
2451 }));
2452 break;
2453 }
2454 }
2455 let text = &text[common_prefix_len..];
2456
2457 self.transact(cx, |this, cx| {
2458 if let Some(mut snippet) = snippet {
2459 snippet.text = text.to_string();
2460 for tabstop in snippet.tabstops.iter_mut().flatten() {
2461 tabstop.start -= common_prefix_len as isize;
2462 tabstop.end -= common_prefix_len as isize;
2463 }
2464
2465 this.insert_snippet(&ranges, snippet, cx).log_err();
2466 } else {
2467 this.buffer.update(cx, |buffer, cx| {
2468 buffer.edit_with_autoindent(ranges, text, cx);
2469 });
2470 }
2471 });
2472
2473 let project = self.project.clone()?;
2474 let apply_edits = project.update(cx, |project, cx| {
2475 project.apply_additional_edits_for_completion(
2476 buffer_handle,
2477 completion.clone(),
2478 true,
2479 cx,
2480 )
2481 });
2482 Some(cx.foreground().spawn(async move {
2483 apply_edits.await?;
2484 Ok(())
2485 }))
2486 }
2487
2488 pub fn toggle_code_actions(
2489 &mut self,
2490 &ToggleCodeActions(deployed_from_indicator): &ToggleCodeActions,
2491 cx: &mut ViewContext<Self>,
2492 ) {
2493 if matches!(
2494 self.context_menu.as_ref(),
2495 Some(ContextMenu::CodeActions(_))
2496 ) {
2497 self.context_menu.take();
2498 cx.notify();
2499 return;
2500 }
2501
2502 let mut task = self.code_actions_task.take();
2503 cx.spawn_weak(|this, mut cx| async move {
2504 while let Some(prev_task) = task {
2505 prev_task.await;
2506 task = this
2507 .upgrade(&cx)
2508 .and_then(|this| this.update(&mut cx, |this, _| this.code_actions_task.take()));
2509 }
2510
2511 if let Some(this) = this.upgrade(&cx) {
2512 this.update(&mut cx, |this, cx| {
2513 if this.focused {
2514 if let Some((buffer, actions)) = this.available_code_actions.clone() {
2515 this.show_context_menu(
2516 ContextMenu::CodeActions(CodeActionsMenu {
2517 buffer,
2518 actions,
2519 selected_item: Default::default(),
2520 list: Default::default(),
2521 deployed_from_indicator,
2522 }),
2523 cx,
2524 );
2525 }
2526 }
2527 })
2528 }
2529 Ok::<_, anyhow::Error>(())
2530 })
2531 .detach_and_log_err(cx);
2532 }
2533
2534 pub fn confirm_code_action(
2535 workspace: &mut Workspace,
2536 ConfirmCodeAction(action_ix): &ConfirmCodeAction,
2537 cx: &mut ViewContext<Workspace>,
2538 ) -> Option<Task<Result<()>>> {
2539 let editor = workspace.active_item(cx)?.act_as::<Editor>(cx)?;
2540 let actions_menu = if let ContextMenu::CodeActions(menu) =
2541 editor.update(cx, |editor, cx| editor.hide_context_menu(cx))?
2542 {
2543 menu
2544 } else {
2545 return None;
2546 };
2547 let action_ix = action_ix.unwrap_or(actions_menu.selected_item);
2548 let action = actions_menu.actions.get(action_ix)?.clone();
2549 let title = action.lsp_action.title.clone();
2550 let buffer = actions_menu.buffer;
2551
2552 let apply_code_actions = workspace.project().clone().update(cx, |project, cx| {
2553 project.apply_code_action(buffer, action, true, cx)
2554 });
2555 Some(cx.spawn(|workspace, cx| async move {
2556 let project_transaction = apply_code_actions.await?;
2557 Self::open_project_transaction(editor, workspace, project_transaction, title, cx).await
2558 }))
2559 }
2560
2561 async fn open_project_transaction(
2562 this: ViewHandle<Editor>,
2563 workspace: ViewHandle<Workspace>,
2564 transaction: ProjectTransaction,
2565 title: String,
2566 mut cx: AsyncAppContext,
2567 ) -> Result<()> {
2568 let replica_id = this.read_with(&cx, |this, cx| this.replica_id(cx));
2569
2570 // If the project transaction's edits are all contained within this editor, then
2571 // avoid opening a new editor to display them.
2572 let mut entries = transaction.0.iter();
2573 if let Some((buffer, transaction)) = entries.next() {
2574 if entries.next().is_none() {
2575 let excerpt = this.read_with(&cx, |editor, cx| {
2576 editor
2577 .buffer()
2578 .read(cx)
2579 .excerpt_containing(editor.newest_anchor_selection().head(), cx)
2580 });
2581 if let Some((excerpted_buffer, excerpt_range)) = excerpt {
2582 if excerpted_buffer == *buffer {
2583 let snapshot = buffer.read_with(&cx, |buffer, _| buffer.snapshot());
2584 let excerpt_range = excerpt_range.to_offset(&snapshot);
2585 if snapshot
2586 .edited_ranges_for_transaction(transaction)
2587 .all(|range| {
2588 excerpt_range.start <= range.start && excerpt_range.end >= range.end
2589 })
2590 {
2591 return Ok(());
2592 }
2593 }
2594 }
2595 }
2596 }
2597
2598 let mut ranges_to_highlight = Vec::new();
2599 let excerpt_buffer = cx.add_model(|cx| {
2600 let mut multibuffer = MultiBuffer::new(replica_id).with_title(title);
2601 for (buffer, transaction) in &transaction.0 {
2602 let snapshot = buffer.read(cx).snapshot();
2603 ranges_to_highlight.extend(
2604 multibuffer.push_excerpts_with_context_lines(
2605 buffer.clone(),
2606 snapshot
2607 .edited_ranges_for_transaction::<usize>(transaction)
2608 .collect(),
2609 1,
2610 cx,
2611 ),
2612 );
2613 }
2614 multibuffer.push_transaction(&transaction.0);
2615 multibuffer
2616 });
2617
2618 workspace.update(&mut cx, |workspace, cx| {
2619 let project = workspace.project().clone();
2620 let editor =
2621 cx.add_view(|cx| Editor::for_multibuffer(excerpt_buffer, Some(project), cx));
2622 workspace.add_item(Box::new(editor.clone()), cx);
2623 editor.update(cx, |editor, cx| {
2624 let color = editor.style(cx).highlighted_line_background;
2625 editor.highlight_background::<Self>(ranges_to_highlight, color, cx);
2626 });
2627 });
2628
2629 Ok(())
2630 }
2631
2632 fn refresh_code_actions(&mut self, cx: &mut ViewContext<Self>) -> Option<()> {
2633 let project = self.project.as_ref()?;
2634 let buffer = self.buffer.read(cx);
2635 let newest_selection = self.newest_anchor_selection().clone();
2636 let (start_buffer, start) = buffer.text_anchor_for_position(newest_selection.start, cx)?;
2637 let (end_buffer, end) = buffer.text_anchor_for_position(newest_selection.end, cx)?;
2638 if start_buffer != end_buffer {
2639 return None;
2640 }
2641
2642 let actions = project.update(cx, |project, cx| {
2643 project.code_actions(&start_buffer, start..end, cx)
2644 });
2645 self.code_actions_task = Some(cx.spawn_weak(|this, mut cx| async move {
2646 let actions = actions.await;
2647 if let Some(this) = this.upgrade(&cx) {
2648 this.update(&mut cx, |this, cx| {
2649 this.available_code_actions = actions.log_err().and_then(|actions| {
2650 if actions.is_empty() {
2651 None
2652 } else {
2653 Some((start_buffer, actions.into()))
2654 }
2655 });
2656 cx.notify();
2657 })
2658 }
2659 }));
2660 None
2661 }
2662
2663 fn refresh_document_highlights(&mut self, cx: &mut ViewContext<Self>) -> Option<()> {
2664 if self.pending_rename.is_some() {
2665 return None;
2666 }
2667
2668 let project = self.project.as_ref()?;
2669 let buffer = self.buffer.read(cx);
2670 let newest_selection = self.newest_anchor_selection().clone();
2671 let cursor_position = newest_selection.head();
2672 let (cursor_buffer, cursor_buffer_position) =
2673 buffer.text_anchor_for_position(cursor_position.clone(), cx)?;
2674 let (tail_buffer, _) = buffer.text_anchor_for_position(newest_selection.tail(), cx)?;
2675 if cursor_buffer != tail_buffer {
2676 return None;
2677 }
2678
2679 let highlights = project.update(cx, |project, cx| {
2680 project.document_highlights(&cursor_buffer, cursor_buffer_position, cx)
2681 });
2682
2683 self.document_highlights_task = Some(cx.spawn_weak(|this, mut cx| async move {
2684 let highlights = highlights.log_err().await;
2685 if let Some((this, highlights)) = this.upgrade(&cx).zip(highlights) {
2686 this.update(&mut cx, |this, cx| {
2687 if this.pending_rename.is_some() {
2688 return;
2689 }
2690
2691 let buffer_id = cursor_position.buffer_id;
2692 let style = this.style(cx);
2693 let read_background = style.document_highlight_read_background;
2694 let write_background = style.document_highlight_write_background;
2695 let buffer = this.buffer.read(cx);
2696 if !buffer
2697 .text_anchor_for_position(cursor_position, cx)
2698 .map_or(false, |(buffer, _)| buffer == cursor_buffer)
2699 {
2700 return;
2701 }
2702
2703 let cursor_buffer_snapshot = cursor_buffer.read(cx);
2704 let mut write_ranges = Vec::new();
2705 let mut read_ranges = Vec::new();
2706 for highlight in highlights {
2707 for (excerpt_id, excerpt_range) in
2708 buffer.excerpts_for_buffer(&cursor_buffer, cx)
2709 {
2710 let start = highlight
2711 .range
2712 .start
2713 .max(&excerpt_range.start, cursor_buffer_snapshot);
2714 let end = highlight
2715 .range
2716 .end
2717 .min(&excerpt_range.end, cursor_buffer_snapshot);
2718 if start.cmp(&end, cursor_buffer_snapshot).is_ge() {
2719 continue;
2720 }
2721
2722 let range = Anchor {
2723 buffer_id,
2724 excerpt_id: excerpt_id.clone(),
2725 text_anchor: start,
2726 }..Anchor {
2727 buffer_id,
2728 excerpt_id,
2729 text_anchor: end,
2730 };
2731 if highlight.kind == lsp::DocumentHighlightKind::WRITE {
2732 write_ranges.push(range);
2733 } else {
2734 read_ranges.push(range);
2735 }
2736 }
2737 }
2738
2739 this.highlight_background::<DocumentHighlightRead>(
2740 read_ranges,
2741 read_background,
2742 cx,
2743 );
2744 this.highlight_background::<DocumentHighlightWrite>(
2745 write_ranges,
2746 write_background,
2747 cx,
2748 );
2749 cx.notify();
2750 });
2751 }
2752 }));
2753 None
2754 }
2755
2756 pub fn render_code_actions_indicator(
2757 &self,
2758 style: &EditorStyle,
2759 cx: &mut ViewContext<Self>,
2760 ) -> Option<ElementBox> {
2761 if self.available_code_actions.is_some() {
2762 enum Tag {}
2763 Some(
2764 MouseEventHandler::new::<Tag, _, _>(0, cx, |_, _| {
2765 Svg::new("icons/zap.svg")
2766 .with_color(style.code_actions_indicator)
2767 .boxed()
2768 })
2769 .with_cursor_style(CursorStyle::PointingHand)
2770 .with_padding(Padding::uniform(3.))
2771 .on_mouse_down(|cx| {
2772 cx.dispatch_action(ToggleCodeActions(true));
2773 })
2774 .boxed(),
2775 )
2776 } else {
2777 None
2778 }
2779 }
2780
2781 pub fn context_menu_visible(&self) -> bool {
2782 self.context_menu
2783 .as_ref()
2784 .map_or(false, |menu| menu.visible())
2785 }
2786
2787 pub fn render_context_menu(
2788 &self,
2789 cursor_position: DisplayPoint,
2790 style: EditorStyle,
2791 cx: &AppContext,
2792 ) -> Option<(DisplayPoint, ElementBox)> {
2793 self.context_menu
2794 .as_ref()
2795 .map(|menu| menu.render(cursor_position, style, cx))
2796 }
2797
2798 fn show_context_menu(&mut self, menu: ContextMenu, cx: &mut ViewContext<Self>) {
2799 if !matches!(menu, ContextMenu::Completions(_)) {
2800 self.completion_tasks.clear();
2801 }
2802 self.context_menu = Some(menu);
2803 cx.notify();
2804 }
2805
2806 fn hide_context_menu(&mut self, cx: &mut ViewContext<Self>) -> Option<ContextMenu> {
2807 cx.notify();
2808 self.completion_tasks.clear();
2809 self.context_menu.take()
2810 }
2811
2812 pub fn insert_snippet(
2813 &mut self,
2814 insertion_ranges: &[Range<usize>],
2815 snippet: Snippet,
2816 cx: &mut ViewContext<Self>,
2817 ) -> Result<()> {
2818 let tabstops = self.buffer.update(cx, |buffer, cx| {
2819 buffer.edit_with_autoindent(insertion_ranges.iter().cloned(), &snippet.text, cx);
2820
2821 let snapshot = &*buffer.read(cx);
2822 let snippet = &snippet;
2823 snippet
2824 .tabstops
2825 .iter()
2826 .map(|tabstop| {
2827 let mut tabstop_ranges = tabstop
2828 .iter()
2829 .flat_map(|tabstop_range| {
2830 let mut delta = 0 as isize;
2831 insertion_ranges.iter().map(move |insertion_range| {
2832 let insertion_start = insertion_range.start as isize + delta;
2833 delta +=
2834 snippet.text.len() as isize - insertion_range.len() as isize;
2835
2836 let start = snapshot.anchor_before(
2837 (insertion_start + tabstop_range.start) as usize,
2838 );
2839 let end = snapshot
2840 .anchor_after((insertion_start + tabstop_range.end) as usize);
2841 start..end
2842 })
2843 })
2844 .collect::<Vec<_>>();
2845 tabstop_ranges.sort_unstable_by(|a, b| a.start.cmp(&b.start, snapshot));
2846 tabstop_ranges
2847 })
2848 .collect::<Vec<_>>()
2849 });
2850
2851 if let Some(tabstop) = tabstops.first() {
2852 self.select_ranges(tabstop.iter().cloned(), Some(Autoscroll::Fit), cx);
2853 self.snippet_stack.push(SnippetState {
2854 active_index: 0,
2855 ranges: tabstops,
2856 });
2857 }
2858
2859 Ok(())
2860 }
2861
2862 pub fn move_to_next_snippet_tabstop(&mut self, cx: &mut ViewContext<Self>) -> bool {
2863 self.move_to_snippet_tabstop(Bias::Right, cx)
2864 }
2865
2866 pub fn move_to_prev_snippet_tabstop(&mut self, cx: &mut ViewContext<Self>) {
2867 self.move_to_snippet_tabstop(Bias::Left, cx);
2868 }
2869
2870 pub fn move_to_snippet_tabstop(&mut self, bias: Bias, cx: &mut ViewContext<Self>) -> bool {
2871 let buffer = self.buffer.read(cx).snapshot(cx);
2872
2873 if let Some(snippet) = self.snippet_stack.last_mut() {
2874 match bias {
2875 Bias::Left => {
2876 if snippet.active_index > 0 {
2877 snippet.active_index -= 1;
2878 } else {
2879 return false;
2880 }
2881 }
2882 Bias::Right => {
2883 if snippet.active_index + 1 < snippet.ranges.len() {
2884 snippet.active_index += 1;
2885 } else {
2886 return false;
2887 }
2888 }
2889 }
2890 if let Some(current_ranges) = snippet.ranges.get(snippet.active_index) {
2891 let new_selections = current_ranges
2892 .iter()
2893 .map(|new_range| {
2894 let new_range = new_range.to_offset(&buffer);
2895 Selection {
2896 id: post_inc(&mut self.next_selection_id),
2897 start: new_range.start,
2898 end: new_range.end,
2899 reversed: false,
2900 goal: SelectionGoal::None,
2901 }
2902 })
2903 .collect();
2904
2905 // Remove the snippet state when moving to the last tabstop.
2906 if snippet.active_index + 1 == snippet.ranges.len() {
2907 self.snippet_stack.pop();
2908 }
2909
2910 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
2911 return true;
2912 }
2913 self.snippet_stack.pop();
2914 }
2915
2916 false
2917 }
2918
2919 pub fn clear(&mut self, cx: &mut ViewContext<Self>) {
2920 self.transact(cx, |this, cx| {
2921 this.select_all(&SelectAll, cx);
2922 this.insert("", cx);
2923 });
2924 }
2925
2926 pub fn backspace(&mut self, _: &Backspace, cx: &mut ViewContext<Self>) {
2927 let mut selections = self.local_selections::<Point>(cx);
2928 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2929 for selection in &mut selections {
2930 if selection.is_empty() {
2931 let old_head = selection.head();
2932 let mut new_head =
2933 movement::left(&display_map, old_head.to_display_point(&display_map))
2934 .to_point(&display_map);
2935 if let Some((buffer, line_buffer_range)) = display_map
2936 .buffer_snapshot
2937 .buffer_line_for_row(old_head.row)
2938 {
2939 let indent_column = buffer.indent_column_for_line(line_buffer_range.start.row);
2940 if old_head.column <= indent_column && old_head.column > 0 {
2941 let indent = buffer.indent_size();
2942 new_head = cmp::min(
2943 new_head,
2944 Point::new(old_head.row, ((old_head.column - 1) / indent) * indent),
2945 );
2946 }
2947 }
2948
2949 selection.set_head(new_head, SelectionGoal::None);
2950 }
2951 }
2952
2953 self.transact(cx, |this, cx| {
2954 this.update_selections(selections, Some(Autoscroll::Fit), cx);
2955 this.insert("", cx);
2956 });
2957 }
2958
2959 pub fn delete(&mut self, _: &Delete, cx: &mut ViewContext<Self>) {
2960 self.transact(cx, |this, cx| {
2961 this.move_selections(cx, |map, selection| {
2962 if selection.is_empty() {
2963 let cursor = movement::right(map, selection.head());
2964 selection.set_head(cursor, SelectionGoal::None);
2965 }
2966 });
2967 this.insert(&"", cx);
2968 });
2969 }
2970
2971 pub fn tab(&mut self, &Tab(direction): &Tab, cx: &mut ViewContext<Self>) {
2972 match direction {
2973 Direction::Prev => {
2974 if !self.snippet_stack.is_empty() {
2975 self.move_to_prev_snippet_tabstop(cx);
2976 return;
2977 }
2978
2979 self.outdent(&Outdent, cx);
2980 }
2981 Direction::Next => {
2982 if self.move_to_next_snippet_tabstop(cx) {
2983 return;
2984 }
2985
2986 let tab_size = cx.global::<Settings>().tab_size;
2987 let mut selections = self.local_selections::<Point>(cx);
2988 if selections.iter().all(|s| s.is_empty()) {
2989 self.transact(cx, |this, cx| {
2990 this.buffer.update(cx, |buffer, cx| {
2991 for selection in &mut selections {
2992 let char_column = buffer
2993 .read(cx)
2994 .text_for_range(
2995 Point::new(selection.start.row, 0)..selection.start,
2996 )
2997 .flat_map(str::chars)
2998 .count();
2999 let chars_to_next_tab_stop = tab_size - (char_column % tab_size);
3000 buffer.edit(
3001 [selection.start..selection.start],
3002 " ".repeat(chars_to_next_tab_stop),
3003 cx,
3004 );
3005 selection.start.column += chars_to_next_tab_stop as u32;
3006 selection.end = selection.start;
3007 }
3008 });
3009 this.update_selections(selections, Some(Autoscroll::Fit), cx);
3010 });
3011 } else {
3012 self.indent(&Indent, cx);
3013 }
3014 }
3015 }
3016 }
3017
3018 pub fn indent(&mut self, _: &Indent, cx: &mut ViewContext<Self>) {
3019 let tab_size = cx.global::<Settings>().tab_size;
3020 let mut selections = self.local_selections::<Point>(cx);
3021 self.transact(cx, |this, cx| {
3022 let mut last_indent = None;
3023 this.buffer.update(cx, |buffer, cx| {
3024 for selection in &mut selections {
3025 let mut start_row = selection.start.row;
3026 let mut end_row = selection.end.row + 1;
3027
3028 // If a selection ends at the beginning of a line, don't indent
3029 // that last line.
3030 if selection.end.column == 0 {
3031 end_row -= 1;
3032 }
3033
3034 // Avoid re-indenting a row that has already been indented by a
3035 // previous selection, but still update this selection's column
3036 // to reflect that indentation.
3037 if let Some((last_indent_row, last_indent_len)) = last_indent {
3038 if last_indent_row == selection.start.row {
3039 selection.start.column += last_indent_len;
3040 start_row += 1;
3041 }
3042 if last_indent_row == selection.end.row {
3043 selection.end.column += last_indent_len;
3044 }
3045 }
3046
3047 for row in start_row..end_row {
3048 let indent_column = buffer.read(cx).indent_column_for_line(row) as usize;
3049 let columns_to_next_tab_stop = tab_size - (indent_column % tab_size);
3050 let row_start = Point::new(row, 0);
3051 buffer.edit(
3052 [row_start..row_start],
3053 " ".repeat(columns_to_next_tab_stop),
3054 cx,
3055 );
3056
3057 // Update this selection's endpoints to reflect the indentation.
3058 if row == selection.start.row {
3059 selection.start.column += columns_to_next_tab_stop as u32;
3060 }
3061 if row == selection.end.row {
3062 selection.end.column += columns_to_next_tab_stop as u32;
3063 }
3064
3065 last_indent = Some((row, columns_to_next_tab_stop as u32));
3066 }
3067 }
3068 });
3069
3070 this.update_selections(selections, Some(Autoscroll::Fit), cx);
3071 });
3072 }
3073
3074 pub fn outdent(&mut self, _: &Outdent, cx: &mut ViewContext<Self>) {
3075 let tab_size = cx.global::<Settings>().tab_size;
3076 let selections = self.local_selections::<Point>(cx);
3077 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3078 let mut deletion_ranges = Vec::new();
3079 let mut last_outdent = None;
3080 {
3081 let buffer = self.buffer.read(cx).read(cx);
3082 for selection in &selections {
3083 let mut rows = selection.spanned_rows(false, &display_map);
3084
3085 // Avoid re-outdenting a row that has already been outdented by a
3086 // previous selection.
3087 if let Some(last_row) = last_outdent {
3088 if last_row == rows.start {
3089 rows.start += 1;
3090 }
3091 }
3092
3093 for row in rows {
3094 let column = buffer.indent_column_for_line(row) as usize;
3095 if column > 0 {
3096 let mut deletion_len = (column % tab_size) as u32;
3097 if deletion_len == 0 {
3098 deletion_len = tab_size as u32;
3099 }
3100 deletion_ranges.push(Point::new(row, 0)..Point::new(row, deletion_len));
3101 last_outdent = Some(row);
3102 }
3103 }
3104 }
3105 }
3106
3107 self.transact(cx, |this, cx| {
3108 this.buffer.update(cx, |buffer, cx| {
3109 buffer.edit(deletion_ranges, "", cx);
3110 });
3111 this.update_selections(
3112 this.local_selections::<usize>(cx),
3113 Some(Autoscroll::Fit),
3114 cx,
3115 );
3116 });
3117 }
3118
3119 pub fn delete_line(&mut self, _: &DeleteLine, cx: &mut ViewContext<Self>) {
3120 let selections = self.local_selections::<Point>(cx);
3121 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3122 let buffer = self.buffer.read(cx).snapshot(cx);
3123
3124 let mut new_cursors = Vec::new();
3125 let mut edit_ranges = Vec::new();
3126 let mut selections = selections.iter().peekable();
3127 while let Some(selection) = selections.next() {
3128 let mut rows = selection.spanned_rows(false, &display_map);
3129 let goal_display_column = selection.head().to_display_point(&display_map).column();
3130
3131 // Accumulate contiguous regions of rows that we want to delete.
3132 while let Some(next_selection) = selections.peek() {
3133 let next_rows = next_selection.spanned_rows(false, &display_map);
3134 if next_rows.start <= rows.end {
3135 rows.end = next_rows.end;
3136 selections.next().unwrap();
3137 } else {
3138 break;
3139 }
3140 }
3141
3142 let mut edit_start = Point::new(rows.start, 0).to_offset(&buffer);
3143 let edit_end;
3144 let cursor_buffer_row;
3145 if buffer.max_point().row >= rows.end {
3146 // If there's a line after the range, delete the \n from the end of the row range
3147 // and position the cursor on the next line.
3148 edit_end = Point::new(rows.end, 0).to_offset(&buffer);
3149 cursor_buffer_row = rows.end;
3150 } else {
3151 // If there isn't a line after the range, delete the \n from the line before the
3152 // start of the row range and position the cursor there.
3153 edit_start = edit_start.saturating_sub(1);
3154 edit_end = buffer.len();
3155 cursor_buffer_row = rows.start.saturating_sub(1);
3156 }
3157
3158 let mut cursor = Point::new(cursor_buffer_row, 0).to_display_point(&display_map);
3159 *cursor.column_mut() =
3160 cmp::min(goal_display_column, display_map.line_len(cursor.row()));
3161
3162 new_cursors.push((
3163 selection.id,
3164 buffer.anchor_after(cursor.to_point(&display_map)),
3165 ));
3166 edit_ranges.push(edit_start..edit_end);
3167 }
3168
3169 self.transact(cx, |this, cx| {
3170 let buffer = this.buffer.update(cx, |buffer, cx| {
3171 buffer.edit(edit_ranges, "", cx);
3172 buffer.snapshot(cx)
3173 });
3174 let new_selections = new_cursors
3175 .into_iter()
3176 .map(|(id, cursor)| {
3177 let cursor = cursor.to_point(&buffer);
3178 Selection {
3179 id,
3180 start: cursor,
3181 end: cursor,
3182 reversed: false,
3183 goal: SelectionGoal::None,
3184 }
3185 })
3186 .collect();
3187 this.update_selections(new_selections, Some(Autoscroll::Fit), cx);
3188 });
3189 }
3190
3191 pub fn duplicate_line(&mut self, _: &DuplicateLine, cx: &mut ViewContext<Self>) {
3192 let selections = self.local_selections::<Point>(cx);
3193 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3194 let buffer = &display_map.buffer_snapshot;
3195
3196 let mut edits = Vec::new();
3197 let mut selections_iter = selections.iter().peekable();
3198 while let Some(selection) = selections_iter.next() {
3199 // Avoid duplicating the same lines twice.
3200 let mut rows = selection.spanned_rows(false, &display_map);
3201
3202 while let Some(next_selection) = selections_iter.peek() {
3203 let next_rows = next_selection.spanned_rows(false, &display_map);
3204 if next_rows.start <= rows.end - 1 {
3205 rows.end = next_rows.end;
3206 selections_iter.next().unwrap();
3207 } else {
3208 break;
3209 }
3210 }
3211
3212 // Copy the text from the selected row region and splice it at the start of the region.
3213 let start = Point::new(rows.start, 0);
3214 let end = Point::new(rows.end - 1, buffer.line_len(rows.end - 1));
3215 let text = buffer
3216 .text_for_range(start..end)
3217 .chain(Some("\n"))
3218 .collect::<String>();
3219 edits.push((start, text, rows.len() as u32));
3220 }
3221
3222 self.transact(cx, |this, cx| {
3223 this.buffer.update(cx, |buffer, cx| {
3224 for (point, text, _) in edits.into_iter().rev() {
3225 buffer.edit(Some(point..point), text, cx);
3226 }
3227 });
3228
3229 this.request_autoscroll(Autoscroll::Fit, cx);
3230 });
3231 }
3232
3233 pub fn move_line_up(&mut self, _: &MoveLineUp, cx: &mut ViewContext<Self>) {
3234 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3235 let buffer = self.buffer.read(cx).snapshot(cx);
3236
3237 let mut edits = Vec::new();
3238 let mut unfold_ranges = Vec::new();
3239 let mut refold_ranges = Vec::new();
3240
3241 let selections = self.local_selections::<Point>(cx);
3242 let mut selections = selections.iter().peekable();
3243 let mut contiguous_row_selections = Vec::new();
3244 let mut new_selections = Vec::new();
3245
3246 while let Some(selection) = selections.next() {
3247 // Find all the selections that span a contiguous row range
3248 contiguous_row_selections.push(selection.clone());
3249 let start_row = selection.start.row;
3250 let mut end_row = if selection.end.column > 0 || selection.is_empty() {
3251 display_map.next_line_boundary(selection.end).0.row + 1
3252 } else {
3253 selection.end.row
3254 };
3255
3256 while let Some(next_selection) = selections.peek() {
3257 if next_selection.start.row <= end_row {
3258 end_row = if next_selection.end.column > 0 || next_selection.is_empty() {
3259 display_map.next_line_boundary(next_selection.end).0.row + 1
3260 } else {
3261 next_selection.end.row
3262 };
3263 contiguous_row_selections.push(selections.next().unwrap().clone());
3264 } else {
3265 break;
3266 }
3267 }
3268
3269 // Move the text spanned by the row range to be before the line preceding the row range
3270 if start_row > 0 {
3271 let range_to_move = Point::new(start_row - 1, buffer.line_len(start_row - 1))
3272 ..Point::new(end_row - 1, buffer.line_len(end_row - 1));
3273 let insertion_point = display_map
3274 .prev_line_boundary(Point::new(start_row - 1, 0))
3275 .0;
3276
3277 // Don't move lines across excerpts
3278 if buffer
3279 .excerpt_boundaries_in_range((
3280 Bound::Excluded(insertion_point),
3281 Bound::Included(range_to_move.end),
3282 ))
3283 .next()
3284 .is_none()
3285 {
3286 let text = buffer
3287 .text_for_range(range_to_move.clone())
3288 .flat_map(|s| s.chars())
3289 .skip(1)
3290 .chain(['\n'])
3291 .collect::<String>();
3292
3293 edits.push((
3294 buffer.anchor_after(range_to_move.start)
3295 ..buffer.anchor_before(range_to_move.end),
3296 String::new(),
3297 ));
3298 let insertion_anchor = buffer.anchor_after(insertion_point);
3299 edits.push((insertion_anchor.clone()..insertion_anchor, text));
3300
3301 let row_delta = range_to_move.start.row - insertion_point.row + 1;
3302
3303 // Move selections up
3304 new_selections.extend(contiguous_row_selections.drain(..).map(
3305 |mut selection| {
3306 selection.start.row -= row_delta;
3307 selection.end.row -= row_delta;
3308 selection
3309 },
3310 ));
3311
3312 // Move folds up
3313 unfold_ranges.push(range_to_move.clone());
3314 for fold in display_map.folds_in_range(
3315 buffer.anchor_before(range_to_move.start)
3316 ..buffer.anchor_after(range_to_move.end),
3317 ) {
3318 let mut start = fold.start.to_point(&buffer);
3319 let mut end = fold.end.to_point(&buffer);
3320 start.row -= row_delta;
3321 end.row -= row_delta;
3322 refold_ranges.push(start..end);
3323 }
3324 }
3325 }
3326
3327 // If we didn't move line(s), preserve the existing selections
3328 new_selections.extend(contiguous_row_selections.drain(..));
3329 }
3330
3331 self.transact(cx, |this, cx| {
3332 this.unfold_ranges(unfold_ranges, true, cx);
3333 this.buffer.update(cx, |buffer, cx| {
3334 for (range, text) in edits {
3335 buffer.edit([range], text, cx);
3336 }
3337 });
3338 this.fold_ranges(refold_ranges, cx);
3339 this.update_selections(new_selections, Some(Autoscroll::Fit), cx);
3340 });
3341 }
3342
3343 pub fn move_line_down(&mut self, _: &MoveLineDown, cx: &mut ViewContext<Self>) {
3344 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3345 let buffer = self.buffer.read(cx).snapshot(cx);
3346
3347 let mut edits = Vec::new();
3348 let mut unfold_ranges = Vec::new();
3349 let mut refold_ranges = Vec::new();
3350
3351 let selections = self.local_selections::<Point>(cx);
3352 let mut selections = selections.iter().peekable();
3353 let mut contiguous_row_selections = Vec::new();
3354 let mut new_selections = Vec::new();
3355
3356 while let Some(selection) = selections.next() {
3357 // Find all the selections that span a contiguous row range
3358 contiguous_row_selections.push(selection.clone());
3359 let start_row = selection.start.row;
3360 let mut end_row = if selection.end.column > 0 || selection.is_empty() {
3361 display_map.next_line_boundary(selection.end).0.row + 1
3362 } else {
3363 selection.end.row
3364 };
3365
3366 while let Some(next_selection) = selections.peek() {
3367 if next_selection.start.row <= end_row {
3368 end_row = if next_selection.end.column > 0 || next_selection.is_empty() {
3369 display_map.next_line_boundary(next_selection.end).0.row + 1
3370 } else {
3371 next_selection.end.row
3372 };
3373 contiguous_row_selections.push(selections.next().unwrap().clone());
3374 } else {
3375 break;
3376 }
3377 }
3378
3379 // Move the text spanned by the row range to be after the last line of the row range
3380 if end_row <= buffer.max_point().row {
3381 let range_to_move = Point::new(start_row, 0)..Point::new(end_row, 0);
3382 let insertion_point = display_map.next_line_boundary(Point::new(end_row, 0)).0;
3383
3384 // Don't move lines across excerpt boundaries
3385 if buffer
3386 .excerpt_boundaries_in_range((
3387 Bound::Excluded(range_to_move.start),
3388 Bound::Included(insertion_point),
3389 ))
3390 .next()
3391 .is_none()
3392 {
3393 let mut text = String::from("\n");
3394 text.extend(buffer.text_for_range(range_to_move.clone()));
3395 text.pop(); // Drop trailing newline
3396 edits.push((
3397 buffer.anchor_after(range_to_move.start)
3398 ..buffer.anchor_before(range_to_move.end),
3399 String::new(),
3400 ));
3401 let insertion_anchor = buffer.anchor_after(insertion_point);
3402 edits.push((insertion_anchor.clone()..insertion_anchor, text));
3403
3404 let row_delta = insertion_point.row - range_to_move.end.row + 1;
3405
3406 // Move selections down
3407 new_selections.extend(contiguous_row_selections.drain(..).map(
3408 |mut selection| {
3409 selection.start.row += row_delta;
3410 selection.end.row += row_delta;
3411 selection
3412 },
3413 ));
3414
3415 // Move folds down
3416 unfold_ranges.push(range_to_move.clone());
3417 for fold in display_map.folds_in_range(
3418 buffer.anchor_before(range_to_move.start)
3419 ..buffer.anchor_after(range_to_move.end),
3420 ) {
3421 let mut start = fold.start.to_point(&buffer);
3422 let mut end = fold.end.to_point(&buffer);
3423 start.row += row_delta;
3424 end.row += row_delta;
3425 refold_ranges.push(start..end);
3426 }
3427 }
3428 }
3429
3430 // If we didn't move line(s), preserve the existing selections
3431 new_selections.extend(contiguous_row_selections.drain(..));
3432 }
3433
3434 self.transact(cx, |this, cx| {
3435 this.unfold_ranges(unfold_ranges, true, cx);
3436 this.buffer.update(cx, |buffer, cx| {
3437 for (range, text) in edits {
3438 buffer.edit([range], text, cx);
3439 }
3440 });
3441 this.fold_ranges(refold_ranges, cx);
3442 this.update_selections(new_selections, Some(Autoscroll::Fit), cx);
3443 });
3444 }
3445
3446 pub fn cut(&mut self, _: &Cut, cx: &mut ViewContext<Self>) {
3447 let mut text = String::new();
3448 let mut selections = self.local_selections::<Point>(cx);
3449 let mut clipboard_selections = Vec::with_capacity(selections.len());
3450 {
3451 let buffer = self.buffer.read(cx).read(cx);
3452 let max_point = buffer.max_point();
3453 for selection in &mut selections {
3454 let is_entire_line = selection.is_empty();
3455 if is_entire_line {
3456 selection.start = Point::new(selection.start.row, 0);
3457 selection.end = cmp::min(max_point, Point::new(selection.end.row + 1, 0));
3458 selection.goal = SelectionGoal::None;
3459 }
3460 let mut len = 0;
3461 for chunk in buffer.text_for_range(selection.start..selection.end) {
3462 text.push_str(chunk);
3463 len += chunk.len();
3464 }
3465 clipboard_selections.push(ClipboardSelection {
3466 len,
3467 is_entire_line,
3468 });
3469 }
3470 }
3471
3472 self.transact(cx, |this, cx| {
3473 this.update_selections(selections, Some(Autoscroll::Fit), cx);
3474 this.insert("", cx);
3475 cx.write_to_clipboard(ClipboardItem::new(text).with_metadata(clipboard_selections));
3476 });
3477 }
3478
3479 pub fn copy(&mut self, _: &Copy, cx: &mut ViewContext<Self>) {
3480 let selections = self.local_selections::<Point>(cx);
3481 let mut text = String::new();
3482 let mut clipboard_selections = Vec::with_capacity(selections.len());
3483 {
3484 let buffer = self.buffer.read(cx).read(cx);
3485 let max_point = buffer.max_point();
3486 for selection in selections.iter() {
3487 let mut start = selection.start;
3488 let mut end = selection.end;
3489 let is_entire_line = selection.is_empty();
3490 if is_entire_line {
3491 start = Point::new(start.row, 0);
3492 end = cmp::min(max_point, Point::new(start.row + 1, 0));
3493 }
3494 let mut len = 0;
3495 for chunk in buffer.text_for_range(start..end) {
3496 text.push_str(chunk);
3497 len += chunk.len();
3498 }
3499 clipboard_selections.push(ClipboardSelection {
3500 len,
3501 is_entire_line,
3502 });
3503 }
3504 }
3505
3506 cx.write_to_clipboard(ClipboardItem::new(text).with_metadata(clipboard_selections));
3507 }
3508
3509 pub fn paste(&mut self, _: &Paste, cx: &mut ViewContext<Self>) {
3510 self.transact(cx, |this, cx| {
3511 if let Some(item) = cx.as_mut().read_from_clipboard() {
3512 let clipboard_text = item.text();
3513 if let Some(mut clipboard_selections) = item.metadata::<Vec<ClipboardSelection>>() {
3514 let mut selections = this.local_selections::<usize>(cx);
3515 let all_selections_were_entire_line =
3516 clipboard_selections.iter().all(|s| s.is_entire_line);
3517 if clipboard_selections.len() != selections.len() {
3518 clipboard_selections.clear();
3519 }
3520
3521 let mut delta = 0_isize;
3522 let mut start_offset = 0;
3523 for (i, selection) in selections.iter_mut().enumerate() {
3524 let to_insert;
3525 let entire_line;
3526 if let Some(clipboard_selection) = clipboard_selections.get(i) {
3527 let end_offset = start_offset + clipboard_selection.len;
3528 to_insert = &clipboard_text[start_offset..end_offset];
3529 entire_line = clipboard_selection.is_entire_line;
3530 start_offset = end_offset
3531 } else {
3532 to_insert = clipboard_text.as_str();
3533 entire_line = all_selections_were_entire_line;
3534 }
3535
3536 selection.start = (selection.start as isize + delta) as usize;
3537 selection.end = (selection.end as isize + delta) as usize;
3538
3539 this.buffer.update(cx, |buffer, cx| {
3540 // If the corresponding selection was empty when this slice of the
3541 // clipboard text was written, then the entire line containing the
3542 // selection was copied. If this selection is also currently empty,
3543 // then paste the line before the current line of the buffer.
3544 let range = if selection.is_empty() && entire_line {
3545 let column =
3546 selection.start.to_point(&buffer.read(cx)).column as usize;
3547 let line_start = selection.start - column;
3548 line_start..line_start
3549 } else {
3550 selection.start..selection.end
3551 };
3552
3553 delta += to_insert.len() as isize - range.len() as isize;
3554 buffer.edit([range], to_insert, cx);
3555 selection.start += to_insert.len();
3556 selection.end = selection.start;
3557 });
3558 }
3559 this.update_selections(selections, Some(Autoscroll::Fit), cx);
3560 } else {
3561 this.insert(clipboard_text, cx);
3562 }
3563 }
3564 });
3565 }
3566
3567 pub fn undo(&mut self, _: &Undo, cx: &mut ViewContext<Self>) {
3568 if let Some(tx_id) = self.buffer.update(cx, |buffer, cx| buffer.undo(cx)) {
3569 if let Some((selections, _)) = self.selection_history.transaction(tx_id).cloned() {
3570 self.set_selections(selections, None, true, cx);
3571 }
3572 self.request_autoscroll(Autoscroll::Fit, cx);
3573 cx.emit(Event::Edited);
3574 }
3575 }
3576
3577 pub fn redo(&mut self, _: &Redo, cx: &mut ViewContext<Self>) {
3578 if let Some(tx_id) = self.buffer.update(cx, |buffer, cx| buffer.redo(cx)) {
3579 if let Some((_, Some(selections))) = self.selection_history.transaction(tx_id).cloned()
3580 {
3581 self.set_selections(selections, None, true, cx);
3582 }
3583 self.request_autoscroll(Autoscroll::Fit, cx);
3584 cx.emit(Event::Edited);
3585 }
3586 }
3587
3588 pub fn finalize_last_transaction(&mut self, cx: &mut ViewContext<Self>) {
3589 self.buffer
3590 .update(cx, |buffer, cx| buffer.finalize_last_transaction(cx));
3591 }
3592
3593 pub fn move_left(&mut self, _: &MoveLeft, cx: &mut ViewContext<Self>) {
3594 self.move_selections(cx, |map, selection| {
3595 let cursor = if selection.is_empty() {
3596 movement::left(map, selection.start)
3597 } else {
3598 selection.start
3599 };
3600 selection.collapse_to(cursor, SelectionGoal::None);
3601 });
3602 }
3603
3604 pub fn select_left(&mut self, _: &SelectLeft, cx: &mut ViewContext<Self>) {
3605 self.move_selection_heads(cx, |map, head, _| {
3606 (movement::left(map, head), SelectionGoal::None)
3607 });
3608 }
3609
3610 pub fn move_right(&mut self, _: &MoveRight, cx: &mut ViewContext<Self>) {
3611 self.move_selections(cx, |map, selection| {
3612 let cursor = if selection.is_empty() {
3613 movement::right(map, selection.end)
3614 } else {
3615 selection.end
3616 };
3617 selection.collapse_to(cursor, SelectionGoal::None)
3618 });
3619 }
3620
3621 pub fn select_right(&mut self, _: &SelectRight, cx: &mut ViewContext<Self>) {
3622 self.move_selection_heads(cx, |map, head, _| {
3623 (movement::right(map, head), SelectionGoal::None)
3624 });
3625 }
3626
3627 pub fn move_up(&mut self, _: &MoveUp, cx: &mut ViewContext<Self>) {
3628 if self.take_rename(true, cx).is_some() {
3629 return;
3630 }
3631
3632 if let Some(context_menu) = self.context_menu.as_mut() {
3633 if context_menu.select_prev(cx) {
3634 return;
3635 }
3636 }
3637
3638 if matches!(self.mode, EditorMode::SingleLine) {
3639 cx.propagate_action();
3640 return;
3641 }
3642
3643 self.move_selections(cx, |map, selection| {
3644 if !selection.is_empty() {
3645 selection.goal = SelectionGoal::None;
3646 }
3647 let (cursor, goal) = movement::up(&map, selection.start, selection.goal);
3648 selection.collapse_to(cursor, goal);
3649 });
3650 }
3651
3652 pub fn select_up(&mut self, _: &SelectUp, cx: &mut ViewContext<Self>) {
3653 self.move_selection_heads(cx, movement::up)
3654 }
3655
3656 pub fn move_down(&mut self, _: &MoveDown, cx: &mut ViewContext<Self>) {
3657 self.take_rename(true, cx);
3658
3659 if let Some(context_menu) = self.context_menu.as_mut() {
3660 if context_menu.select_next(cx) {
3661 return;
3662 }
3663 }
3664
3665 if matches!(self.mode, EditorMode::SingleLine) {
3666 cx.propagate_action();
3667 return;
3668 }
3669
3670 self.move_selections(cx, |map, selection| {
3671 if !selection.is_empty() {
3672 selection.goal = SelectionGoal::None;
3673 }
3674 let (cursor, goal) = movement::down(&map, selection.end, selection.goal);
3675 selection.collapse_to(cursor, goal);
3676 });
3677 }
3678
3679 pub fn select_down(&mut self, _: &SelectDown, cx: &mut ViewContext<Self>) {
3680 self.move_selection_heads(cx, movement::down)
3681 }
3682
3683 pub fn move_to_previous_word_start(
3684 &mut self,
3685 _: &MoveToPreviousWordStart,
3686 cx: &mut ViewContext<Self>,
3687 ) {
3688 self.move_cursors(cx, |map, head, _| {
3689 (
3690 movement::previous_word_start(map, head),
3691 SelectionGoal::None,
3692 )
3693 });
3694 }
3695
3696 pub fn move_to_previous_subword_start(
3697 &mut self,
3698 _: &MoveToPreviousSubwordStart,
3699 cx: &mut ViewContext<Self>,
3700 ) {
3701 self.move_cursors(cx, |map, head, _| {
3702 (
3703 movement::previous_subword_start(map, head),
3704 SelectionGoal::None,
3705 )
3706 });
3707 }
3708
3709 pub fn select_to_previous_word_start(
3710 &mut self,
3711 _: &SelectToPreviousWordStart,
3712 cx: &mut ViewContext<Self>,
3713 ) {
3714 self.move_selection_heads(cx, |map, head, _| {
3715 (
3716 movement::previous_word_start(map, head),
3717 SelectionGoal::None,
3718 )
3719 });
3720 }
3721
3722 pub fn select_to_previous_subword_start(
3723 &mut self,
3724 _: &SelectToPreviousSubwordStart,
3725 cx: &mut ViewContext<Self>,
3726 ) {
3727 self.move_selection_heads(cx, |map, head, _| {
3728 (
3729 movement::previous_subword_start(map, head),
3730 SelectionGoal::None,
3731 )
3732 });
3733 }
3734
3735 pub fn delete_to_previous_word_start(
3736 &mut self,
3737 _: &DeleteToPreviousWordStart,
3738 cx: &mut ViewContext<Self>,
3739 ) {
3740 self.transact(cx, |this, cx| {
3741 this.move_selections(cx, |map, selection| {
3742 if selection.is_empty() {
3743 let cursor = movement::previous_word_start(map, selection.head());
3744 selection.set_head(cursor, SelectionGoal::None);
3745 }
3746 });
3747 this.insert("", cx);
3748 });
3749 }
3750
3751 pub fn delete_to_previous_subword_start(
3752 &mut self,
3753 _: &DeleteToPreviousSubwordStart,
3754 cx: &mut ViewContext<Self>,
3755 ) {
3756 self.transact(cx, |this, cx| {
3757 this.move_selections(cx, |map, selection| {
3758 if selection.is_empty() {
3759 let cursor = movement::previous_subword_start(map, selection.head());
3760 selection.set_head(cursor, SelectionGoal::None);
3761 }
3762 });
3763 this.insert("", cx);
3764 });
3765 }
3766
3767 pub fn move_to_next_word_end(&mut self, _: &MoveToNextWordEnd, cx: &mut ViewContext<Self>) {
3768 self.move_cursors(cx, |map, head, _| {
3769 (movement::next_word_end(map, head), SelectionGoal::None)
3770 });
3771 }
3772
3773 pub fn move_to_next_subword_end(
3774 &mut self,
3775 _: &MoveToNextSubwordEnd,
3776 cx: &mut ViewContext<Self>,
3777 ) {
3778 self.move_cursors(cx, |map, head, _| {
3779 (movement::next_subword_end(map, head), SelectionGoal::None)
3780 });
3781 }
3782
3783 pub fn select_to_next_word_end(&mut self, _: &SelectToNextWordEnd, cx: &mut ViewContext<Self>) {
3784 self.move_selection_heads(cx, |map, head, _| {
3785 (movement::next_word_end(map, head), SelectionGoal::None)
3786 });
3787 }
3788
3789 pub fn select_to_next_subword_end(
3790 &mut self,
3791 _: &SelectToNextSubwordEnd,
3792 cx: &mut ViewContext<Self>,
3793 ) {
3794 self.move_selection_heads(cx, |map, head, _| {
3795 (movement::next_subword_end(map, head), SelectionGoal::None)
3796 });
3797 }
3798
3799 pub fn delete_to_next_word_end(&mut self, _: &DeleteToNextWordEnd, cx: &mut ViewContext<Self>) {
3800 self.transact(cx, |this, cx| {
3801 this.move_selections(cx, |map, selection| {
3802 if selection.is_empty() {
3803 let cursor = movement::next_word_end(map, selection.head());
3804 selection.set_head(cursor, SelectionGoal::None);
3805 }
3806 });
3807 this.insert("", cx);
3808 });
3809 }
3810
3811 pub fn delete_to_next_subword_end(
3812 &mut self,
3813 _: &DeleteToNextSubwordEnd,
3814 cx: &mut ViewContext<Self>,
3815 ) {
3816 self.transact(cx, |this, cx| {
3817 this.move_selections(cx, |map, selection| {
3818 if selection.is_empty() {
3819 let cursor = movement::next_subword_end(map, selection.head());
3820 selection.set_head(cursor, SelectionGoal::None);
3821 }
3822 });
3823 this.insert("", cx);
3824 });
3825 }
3826
3827 pub fn move_to_beginning_of_line(
3828 &mut self,
3829 _: &MoveToBeginningOfLine,
3830 cx: &mut ViewContext<Self>,
3831 ) {
3832 self.move_cursors(cx, |map, head, _| {
3833 (
3834 movement::line_beginning(map, head, true),
3835 SelectionGoal::None,
3836 )
3837 });
3838 }
3839
3840 pub fn select_to_beginning_of_line(
3841 &mut self,
3842 SelectToBeginningOfLine(stop_at_soft_boundaries): &SelectToBeginningOfLine,
3843 cx: &mut ViewContext<Self>,
3844 ) {
3845 self.move_selection_heads(cx, |map, head, _| {
3846 (
3847 movement::line_beginning(map, head, *stop_at_soft_boundaries),
3848 SelectionGoal::None,
3849 )
3850 });
3851 }
3852
3853 pub fn delete_to_beginning_of_line(
3854 &mut self,
3855 _: &DeleteToBeginningOfLine,
3856 cx: &mut ViewContext<Self>,
3857 ) {
3858 self.transact(cx, |this, cx| {
3859 this.select_to_beginning_of_line(&SelectToBeginningOfLine(false), cx);
3860 this.backspace(&Backspace, cx);
3861 });
3862 }
3863
3864 pub fn move_to_end_of_line(&mut self, _: &MoveToEndOfLine, cx: &mut ViewContext<Self>) {
3865 self.move_cursors(cx, |map, head, _| {
3866 (movement::line_end(map, head, true), SelectionGoal::None)
3867 });
3868 }
3869
3870 pub fn select_to_end_of_line(
3871 &mut self,
3872 SelectToEndOfLine(stop_at_soft_boundaries): &SelectToEndOfLine,
3873 cx: &mut ViewContext<Self>,
3874 ) {
3875 self.move_selection_heads(cx, |map, head, _| {
3876 (
3877 movement::line_end(map, head, *stop_at_soft_boundaries),
3878 SelectionGoal::None,
3879 )
3880 });
3881 }
3882
3883 pub fn delete_to_end_of_line(&mut self, _: &DeleteToEndOfLine, cx: &mut ViewContext<Self>) {
3884 self.transact(cx, |this, cx| {
3885 this.select_to_end_of_line(&SelectToEndOfLine(false), cx);
3886 this.delete(&Delete, cx);
3887 });
3888 }
3889
3890 pub fn cut_to_end_of_line(&mut self, _: &CutToEndOfLine, cx: &mut ViewContext<Self>) {
3891 self.transact(cx, |this, cx| {
3892 this.select_to_end_of_line(&SelectToEndOfLine(false), cx);
3893 this.cut(&Cut, cx);
3894 });
3895 }
3896
3897 pub fn move_to_beginning(&mut self, _: &MoveToBeginning, cx: &mut ViewContext<Self>) {
3898 if matches!(self.mode, EditorMode::SingleLine) {
3899 cx.propagate_action();
3900 return;
3901 }
3902
3903 let selection = Selection {
3904 id: post_inc(&mut self.next_selection_id),
3905 start: 0,
3906 end: 0,
3907 reversed: false,
3908 goal: SelectionGoal::None,
3909 };
3910 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
3911 }
3912
3913 pub fn select_to_beginning(&mut self, _: &SelectToBeginning, cx: &mut ViewContext<Self>) {
3914 let mut selection = self.local_selections::<Point>(cx).last().unwrap().clone();
3915 selection.set_head(Point::zero(), SelectionGoal::None);
3916 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
3917 }
3918
3919 pub fn move_to_end(&mut self, _: &MoveToEnd, cx: &mut ViewContext<Self>) {
3920 if matches!(self.mode, EditorMode::SingleLine) {
3921 cx.propagate_action();
3922 return;
3923 }
3924
3925 let cursor = self.buffer.read(cx).read(cx).len();
3926 let selection = Selection {
3927 id: post_inc(&mut self.next_selection_id),
3928 start: cursor,
3929 end: cursor,
3930 reversed: false,
3931 goal: SelectionGoal::None,
3932 };
3933 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
3934 }
3935
3936 pub fn set_nav_history(&mut self, nav_history: Option<ItemNavHistory>) {
3937 self.nav_history = nav_history;
3938 }
3939
3940 pub fn nav_history(&self) -> Option<&ItemNavHistory> {
3941 self.nav_history.as_ref()
3942 }
3943
3944 fn push_to_nav_history(
3945 &self,
3946 position: Anchor,
3947 new_position: Option<Point>,
3948 cx: &mut ViewContext<Self>,
3949 ) {
3950 if let Some(nav_history) = &self.nav_history {
3951 let buffer = self.buffer.read(cx).read(cx);
3952 let offset = position.to_offset(&buffer);
3953 let point = position.to_point(&buffer);
3954 drop(buffer);
3955
3956 if let Some(new_position) = new_position {
3957 let row_delta = (new_position.row as i64 - point.row as i64).abs();
3958 if row_delta < MIN_NAVIGATION_HISTORY_ROW_DELTA {
3959 return;
3960 }
3961 }
3962
3963 nav_history.push(Some(NavigationData {
3964 anchor: position,
3965 offset,
3966 }));
3967 }
3968 }
3969
3970 pub fn select_to_end(&mut self, _: &SelectToEnd, cx: &mut ViewContext<Self>) {
3971 let mut selection = self.local_selections::<usize>(cx).first().unwrap().clone();
3972 selection.set_head(self.buffer.read(cx).read(cx).len(), SelectionGoal::None);
3973 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
3974 }
3975
3976 pub fn select_all(&mut self, _: &SelectAll, cx: &mut ViewContext<Self>) {
3977 let selection = Selection {
3978 id: post_inc(&mut self.next_selection_id),
3979 start: 0,
3980 end: self.buffer.read(cx).read(cx).len(),
3981 reversed: false,
3982 goal: SelectionGoal::None,
3983 };
3984 self.update_selections(vec![selection], None, cx);
3985 }
3986
3987 pub fn select_line(&mut self, _: &SelectLine, cx: &mut ViewContext<Self>) {
3988 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3989 let mut selections = self.local_selections::<Point>(cx);
3990 let max_point = display_map.buffer_snapshot.max_point();
3991 for selection in &mut selections {
3992 let rows = selection.spanned_rows(true, &display_map);
3993 selection.start = Point::new(rows.start, 0);
3994 selection.end = cmp::min(max_point, Point::new(rows.end, 0));
3995 selection.reversed = false;
3996 }
3997 self.update_selections(selections, Some(Autoscroll::Fit), cx);
3998 }
3999
4000 pub fn split_selection_into_lines(
4001 &mut self,
4002 _: &SplitSelectionIntoLines,
4003 cx: &mut ViewContext<Self>,
4004 ) {
4005 let mut to_unfold = Vec::new();
4006 let mut new_selections = Vec::new();
4007 {
4008 let selections = self.local_selections::<Point>(cx);
4009 let buffer = self.buffer.read(cx).read(cx);
4010 for selection in selections {
4011 for row in selection.start.row..selection.end.row {
4012 let cursor = Point::new(row, buffer.line_len(row));
4013 new_selections.push(Selection {
4014 id: post_inc(&mut self.next_selection_id),
4015 start: cursor,
4016 end: cursor,
4017 reversed: false,
4018 goal: SelectionGoal::None,
4019 });
4020 }
4021 new_selections.push(Selection {
4022 id: selection.id,
4023 start: selection.end,
4024 end: selection.end,
4025 reversed: false,
4026 goal: SelectionGoal::None,
4027 });
4028 to_unfold.push(selection.start..selection.end);
4029 }
4030 }
4031 self.unfold_ranges(to_unfold, true, cx);
4032 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
4033 }
4034
4035 pub fn add_selection_above(&mut self, _: &AddSelectionAbove, cx: &mut ViewContext<Self>) {
4036 self.add_selection(true, cx);
4037 }
4038
4039 pub fn add_selection_below(&mut self, _: &AddSelectionBelow, cx: &mut ViewContext<Self>) {
4040 self.add_selection(false, cx);
4041 }
4042
4043 fn add_selection(&mut self, above: bool, cx: &mut ViewContext<Self>) {
4044 self.push_to_selection_history();
4045 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
4046 let mut selections = self.local_selections::<Point>(cx);
4047 let mut state = self.add_selections_state.take().unwrap_or_else(|| {
4048 let oldest_selection = selections.iter().min_by_key(|s| s.id).unwrap().clone();
4049 let range = oldest_selection.display_range(&display_map).sorted();
4050 let columns = cmp::min(range.start.column(), range.end.column())
4051 ..cmp::max(range.start.column(), range.end.column());
4052
4053 selections.clear();
4054 let mut stack = Vec::new();
4055 for row in range.start.row()..=range.end.row() {
4056 if let Some(selection) = self.build_columnar_selection(
4057 &display_map,
4058 row,
4059 &columns,
4060 oldest_selection.reversed,
4061 ) {
4062 stack.push(selection.id);
4063 selections.push(selection);
4064 }
4065 }
4066
4067 if above {
4068 stack.reverse();
4069 }
4070
4071 AddSelectionsState { above, stack }
4072 });
4073
4074 let last_added_selection = *state.stack.last().unwrap();
4075 let mut new_selections = Vec::new();
4076 if above == state.above {
4077 let end_row = if above {
4078 0
4079 } else {
4080 display_map.max_point().row()
4081 };
4082
4083 'outer: for selection in selections {
4084 if selection.id == last_added_selection {
4085 let range = selection.display_range(&display_map).sorted();
4086 debug_assert_eq!(range.start.row(), range.end.row());
4087 let mut row = range.start.row();
4088 let columns = if let SelectionGoal::ColumnRange { start, end } = selection.goal
4089 {
4090 start..end
4091 } else {
4092 cmp::min(range.start.column(), range.end.column())
4093 ..cmp::max(range.start.column(), range.end.column())
4094 };
4095
4096 while row != end_row {
4097 if above {
4098 row -= 1;
4099 } else {
4100 row += 1;
4101 }
4102
4103 if let Some(new_selection) = self.build_columnar_selection(
4104 &display_map,
4105 row,
4106 &columns,
4107 selection.reversed,
4108 ) {
4109 state.stack.push(new_selection.id);
4110 if above {
4111 new_selections.push(new_selection);
4112 new_selections.push(selection);
4113 } else {
4114 new_selections.push(selection);
4115 new_selections.push(new_selection);
4116 }
4117
4118 continue 'outer;
4119 }
4120 }
4121 }
4122
4123 new_selections.push(selection);
4124 }
4125 } else {
4126 new_selections = selections;
4127 new_selections.retain(|s| s.id != last_added_selection);
4128 state.stack.pop();
4129 }
4130
4131 self.update_selections(new_selections, Some(Autoscroll::Newest), cx);
4132 if state.stack.len() > 1 {
4133 self.add_selections_state = Some(state);
4134 }
4135 }
4136
4137 pub fn select_next(&mut self, action: &SelectNext, cx: &mut ViewContext<Self>) {
4138 self.push_to_selection_history();
4139 let replace_newest = action.0;
4140 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
4141 let buffer = &display_map.buffer_snapshot;
4142 let mut selections = self.local_selections::<usize>(cx);
4143 if let Some(mut select_next_state) = self.select_next_state.take() {
4144 let query = &select_next_state.query;
4145 if !select_next_state.done {
4146 let first_selection = selections.iter().min_by_key(|s| s.id).unwrap();
4147 let last_selection = selections.iter().max_by_key(|s| s.id).unwrap();
4148 let mut next_selected_range = None;
4149
4150 let bytes_after_last_selection =
4151 buffer.bytes_in_range(last_selection.end..buffer.len());
4152 let bytes_before_first_selection = buffer.bytes_in_range(0..first_selection.start);
4153 let query_matches = query
4154 .stream_find_iter(bytes_after_last_selection)
4155 .map(|result| (last_selection.end, result))
4156 .chain(
4157 query
4158 .stream_find_iter(bytes_before_first_selection)
4159 .map(|result| (0, result)),
4160 );
4161 for (start_offset, query_match) in query_matches {
4162 let query_match = query_match.unwrap(); // can only fail due to I/O
4163 let offset_range =
4164 start_offset + query_match.start()..start_offset + query_match.end();
4165 let display_range = offset_range.start.to_display_point(&display_map)
4166 ..offset_range.end.to_display_point(&display_map);
4167
4168 if !select_next_state.wordwise
4169 || (!movement::is_inside_word(&display_map, display_range.start)
4170 && !movement::is_inside_word(&display_map, display_range.end))
4171 {
4172 next_selected_range = Some(offset_range);
4173 break;
4174 }
4175 }
4176
4177 if let Some(next_selected_range) = next_selected_range {
4178 if replace_newest {
4179 if let Some(newest_id) =
4180 selections.iter().max_by_key(|s| s.id).map(|s| s.id)
4181 {
4182 selections.retain(|s| s.id != newest_id);
4183 }
4184 }
4185 selections.push(Selection {
4186 id: post_inc(&mut self.next_selection_id),
4187 start: next_selected_range.start,
4188 end: next_selected_range.end,
4189 reversed: false,
4190 goal: SelectionGoal::None,
4191 });
4192 self.unfold_ranges([next_selected_range], false, cx);
4193 self.update_selections(selections, Some(Autoscroll::Newest), cx);
4194 } else {
4195 select_next_state.done = true;
4196 }
4197 }
4198
4199 self.select_next_state = Some(select_next_state);
4200 } else if selections.len() == 1 {
4201 let selection = selections.last_mut().unwrap();
4202 if selection.start == selection.end {
4203 let word_range = movement::surrounding_word(
4204 &display_map,
4205 selection.start.to_display_point(&display_map),
4206 );
4207 selection.start = word_range.start.to_offset(&display_map, Bias::Left);
4208 selection.end = word_range.end.to_offset(&display_map, Bias::Left);
4209 selection.goal = SelectionGoal::None;
4210 selection.reversed = false;
4211
4212 let query = buffer
4213 .text_for_range(selection.start..selection.end)
4214 .collect::<String>();
4215 let select_state = SelectNextState {
4216 query: AhoCorasick::new_auto_configured(&[query]),
4217 wordwise: true,
4218 done: false,
4219 };
4220 self.unfold_ranges([selection.start..selection.end], false, cx);
4221 self.update_selections(selections, Some(Autoscroll::Newest), cx);
4222 self.select_next_state = Some(select_state);
4223 } else {
4224 let query = buffer
4225 .text_for_range(selection.start..selection.end)
4226 .collect::<String>();
4227 self.select_next_state = Some(SelectNextState {
4228 query: AhoCorasick::new_auto_configured(&[query]),
4229 wordwise: false,
4230 done: false,
4231 });
4232 self.select_next(action, cx);
4233 }
4234 }
4235 }
4236
4237 pub fn toggle_comments(&mut self, _: &ToggleComments, cx: &mut ViewContext<Self>) {
4238 // Get the line comment prefix. Split its trailing whitespace into a separate string,
4239 // as that portion won't be used for detecting if a line is a comment.
4240 let full_comment_prefix =
4241 if let Some(prefix) = self.language(cx).and_then(|l| l.line_comment_prefix()) {
4242 prefix.to_string()
4243 } else {
4244 return;
4245 };
4246 let comment_prefix = full_comment_prefix.trim_end_matches(' ');
4247 let comment_prefix_whitespace = &full_comment_prefix[comment_prefix.len()..];
4248
4249 self.transact(cx, |this, cx| {
4250 let mut selections = this.local_selections::<Point>(cx);
4251 let mut all_selection_lines_are_comments = true;
4252 let mut edit_ranges = Vec::new();
4253 let mut last_toggled_row = None;
4254 this.buffer.update(cx, |buffer, cx| {
4255 for selection in &mut selections {
4256 edit_ranges.clear();
4257 let snapshot = buffer.snapshot(cx);
4258
4259 let end_row =
4260 if selection.end.row > selection.start.row && selection.end.column == 0 {
4261 selection.end.row
4262 } else {
4263 selection.end.row + 1
4264 };
4265
4266 for row in selection.start.row..end_row {
4267 // If multiple selections contain a given row, avoid processing that
4268 // row more than once.
4269 if last_toggled_row == Some(row) {
4270 continue;
4271 } else {
4272 last_toggled_row = Some(row);
4273 }
4274
4275 if snapshot.is_line_blank(row) {
4276 continue;
4277 }
4278
4279 let start = Point::new(row, snapshot.indent_column_for_line(row));
4280 let mut line_bytes = snapshot
4281 .bytes_in_range(start..snapshot.max_point())
4282 .flatten()
4283 .copied();
4284
4285 // If this line currently begins with the line comment prefix, then record
4286 // the range containing the prefix.
4287 if all_selection_lines_are_comments
4288 && line_bytes
4289 .by_ref()
4290 .take(comment_prefix.len())
4291 .eq(comment_prefix.bytes())
4292 {
4293 // Include any whitespace that matches the comment prefix.
4294 let matching_whitespace_len = line_bytes
4295 .zip(comment_prefix_whitespace.bytes())
4296 .take_while(|(a, b)| a == b)
4297 .count()
4298 as u32;
4299 let end = Point::new(
4300 row,
4301 start.column
4302 + comment_prefix.len() as u32
4303 + matching_whitespace_len,
4304 );
4305 edit_ranges.push(start..end);
4306 }
4307 // If this line does not begin with the line comment prefix, then record
4308 // the position where the prefix should be inserted.
4309 else {
4310 all_selection_lines_are_comments = false;
4311 edit_ranges.push(start..start);
4312 }
4313 }
4314
4315 if !edit_ranges.is_empty() {
4316 if all_selection_lines_are_comments {
4317 buffer.edit(edit_ranges.iter().cloned(), "", cx);
4318 } else {
4319 let min_column =
4320 edit_ranges.iter().map(|r| r.start.column).min().unwrap();
4321 let edit_ranges = edit_ranges.iter().map(|range| {
4322 let position = Point::new(range.start.row, min_column);
4323 position..position
4324 });
4325 buffer.edit(edit_ranges, &full_comment_prefix, cx);
4326 }
4327 }
4328 }
4329 });
4330
4331 this.update_selections(
4332 this.local_selections::<usize>(cx),
4333 Some(Autoscroll::Fit),
4334 cx,
4335 );
4336 });
4337 }
4338
4339 pub fn select_larger_syntax_node(
4340 &mut self,
4341 _: &SelectLargerSyntaxNode,
4342 cx: &mut ViewContext<Self>,
4343 ) {
4344 let old_selections = self.local_selections::<usize>(cx).into_boxed_slice();
4345 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
4346 let buffer = self.buffer.read(cx).snapshot(cx);
4347
4348 let mut stack = mem::take(&mut self.select_larger_syntax_node_stack);
4349 let mut selected_larger_node = false;
4350 let new_selections = old_selections
4351 .iter()
4352 .map(|selection| {
4353 let old_range = selection.start..selection.end;
4354 let mut new_range = old_range.clone();
4355 while let Some(containing_range) =
4356 buffer.range_for_syntax_ancestor(new_range.clone())
4357 {
4358 new_range = containing_range;
4359 if !display_map.intersects_fold(new_range.start)
4360 && !display_map.intersects_fold(new_range.end)
4361 {
4362 break;
4363 }
4364 }
4365
4366 selected_larger_node |= new_range != old_range;
4367 Selection {
4368 id: selection.id,
4369 start: new_range.start,
4370 end: new_range.end,
4371 goal: SelectionGoal::None,
4372 reversed: selection.reversed,
4373 }
4374 })
4375 .collect::<Vec<_>>();
4376
4377 if selected_larger_node {
4378 stack.push(old_selections);
4379 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
4380 }
4381 self.select_larger_syntax_node_stack = stack;
4382 }
4383
4384 pub fn select_smaller_syntax_node(
4385 &mut self,
4386 _: &SelectSmallerSyntaxNode,
4387 cx: &mut ViewContext<Self>,
4388 ) {
4389 let mut stack = mem::take(&mut self.select_larger_syntax_node_stack);
4390 if let Some(selections) = stack.pop() {
4391 self.update_selections(selections.to_vec(), Some(Autoscroll::Fit), cx);
4392 }
4393 self.select_larger_syntax_node_stack = stack;
4394 }
4395
4396 pub fn move_to_enclosing_bracket(
4397 &mut self,
4398 _: &MoveToEnclosingBracket,
4399 cx: &mut ViewContext<Self>,
4400 ) {
4401 let mut selections = self.local_selections::<usize>(cx);
4402 let buffer = self.buffer.read(cx).snapshot(cx);
4403 for selection in &mut selections {
4404 if let Some((open_range, close_range)) =
4405 buffer.enclosing_bracket_ranges(selection.start..selection.end)
4406 {
4407 let close_range = close_range.to_inclusive();
4408 let destination = if close_range.contains(&selection.start)
4409 && close_range.contains(&selection.end)
4410 {
4411 open_range.end
4412 } else {
4413 *close_range.start()
4414 };
4415 selection.start = destination;
4416 selection.end = destination;
4417 }
4418 }
4419
4420 self.update_selections(selections, Some(Autoscroll::Fit), cx);
4421 }
4422
4423 pub fn undo_selection(&mut self, _: &UndoSelection, cx: &mut ViewContext<Self>) {
4424 self.end_selection(cx);
4425 self.selection_history.mode = SelectionHistoryMode::Undoing;
4426 if let Some(entry) = self.selection_history.undo_stack.pop_back() {
4427 self.set_selections(entry.selections, None, true, cx);
4428 self.select_next_state = entry.select_next_state;
4429 self.add_selections_state = entry.add_selections_state;
4430 self.request_autoscroll(Autoscroll::Newest, cx);
4431 }
4432 self.selection_history.mode = SelectionHistoryMode::Normal;
4433 }
4434
4435 pub fn redo_selection(&mut self, _: &RedoSelection, cx: &mut ViewContext<Self>) {
4436 self.end_selection(cx);
4437 self.selection_history.mode = SelectionHistoryMode::Redoing;
4438 if let Some(entry) = self.selection_history.redo_stack.pop_back() {
4439 self.set_selections(entry.selections, None, true, cx);
4440 self.select_next_state = entry.select_next_state;
4441 self.add_selections_state = entry.add_selections_state;
4442 self.request_autoscroll(Autoscroll::Newest, cx);
4443 }
4444 self.selection_history.mode = SelectionHistoryMode::Normal;
4445 }
4446
4447 pub fn go_to_diagnostic(
4448 &mut self,
4449 &GoToDiagnostic(direction): &GoToDiagnostic,
4450 cx: &mut ViewContext<Self>,
4451 ) {
4452 let buffer = self.buffer.read(cx).snapshot(cx);
4453 let selection = self.newest_selection_with_snapshot::<usize>(&buffer);
4454 let mut active_primary_range = self.active_diagnostics.as_ref().map(|active_diagnostics| {
4455 active_diagnostics
4456 .primary_range
4457 .to_offset(&buffer)
4458 .to_inclusive()
4459 });
4460 let mut search_start = if let Some(active_primary_range) = active_primary_range.as_ref() {
4461 if active_primary_range.contains(&selection.head()) {
4462 *active_primary_range.end()
4463 } else {
4464 selection.head()
4465 }
4466 } else {
4467 selection.head()
4468 };
4469
4470 loop {
4471 let mut diagnostics = if direction == Direction::Prev {
4472 buffer.diagnostics_in_range::<_, usize>(0..search_start, true)
4473 } else {
4474 buffer.diagnostics_in_range::<_, usize>(search_start..buffer.len(), false)
4475 };
4476 let group = diagnostics.find_map(|entry| {
4477 if entry.diagnostic.is_primary
4478 && entry.diagnostic.severity <= DiagnosticSeverity::WARNING
4479 && !entry.range.is_empty()
4480 && Some(entry.range.end) != active_primary_range.as_ref().map(|r| *r.end())
4481 {
4482 Some((entry.range, entry.diagnostic.group_id))
4483 } else {
4484 None
4485 }
4486 });
4487
4488 if let Some((primary_range, group_id)) = group {
4489 self.activate_diagnostics(group_id, cx);
4490 self.update_selections(
4491 vec![Selection {
4492 id: selection.id,
4493 start: primary_range.start,
4494 end: primary_range.start,
4495 reversed: false,
4496 goal: SelectionGoal::None,
4497 }],
4498 Some(Autoscroll::Center),
4499 cx,
4500 );
4501 break;
4502 } else {
4503 // Cycle around to the start of the buffer, potentially moving back to the start of
4504 // the currently active diagnostic.
4505 active_primary_range.take();
4506 if direction == Direction::Prev {
4507 if search_start == buffer.len() {
4508 break;
4509 } else {
4510 search_start = buffer.len();
4511 }
4512 } else {
4513 if search_start == 0 {
4514 break;
4515 } else {
4516 search_start = 0;
4517 }
4518 }
4519 }
4520 }
4521 }
4522
4523 pub fn go_to_definition(
4524 workspace: &mut Workspace,
4525 _: &GoToDefinition,
4526 cx: &mut ViewContext<Workspace>,
4527 ) {
4528 let active_item = workspace.active_item(cx);
4529 let editor_handle = if let Some(editor) = active_item
4530 .as_ref()
4531 .and_then(|item| item.act_as::<Self>(cx))
4532 {
4533 editor
4534 } else {
4535 return;
4536 };
4537
4538 let editor = editor_handle.read(cx);
4539 let head = editor.newest_selection::<usize>(cx).head();
4540 let (buffer, head) =
4541 if let Some(text_anchor) = editor.buffer.read(cx).text_anchor_for_position(head, cx) {
4542 text_anchor
4543 } else {
4544 return;
4545 };
4546
4547 let project = workspace.project().clone();
4548 let definitions = project.update(cx, |project, cx| project.definition(&buffer, head, cx));
4549 cx.spawn(|workspace, mut cx| async move {
4550 let definitions = definitions.await?;
4551 workspace.update(&mut cx, |workspace, cx| {
4552 let nav_history = workspace.active_pane().read(cx).nav_history().clone();
4553 for definition in definitions {
4554 let range = definition.range.to_offset(definition.buffer.read(cx));
4555
4556 let target_editor_handle = workspace.open_project_item(definition.buffer, cx);
4557 target_editor_handle.update(cx, |target_editor, cx| {
4558 // When selecting a definition in a different buffer, disable the nav history
4559 // to avoid creating a history entry at the previous cursor location.
4560 if editor_handle != target_editor_handle {
4561 nav_history.borrow_mut().disable();
4562 }
4563 target_editor.select_ranges([range], Some(Autoscroll::Center), cx);
4564 nav_history.borrow_mut().enable();
4565 });
4566 }
4567 });
4568
4569 Ok::<(), anyhow::Error>(())
4570 })
4571 .detach_and_log_err(cx);
4572 }
4573
4574 pub fn find_all_references(
4575 workspace: &mut Workspace,
4576 _: &FindAllReferences,
4577 cx: &mut ViewContext<Workspace>,
4578 ) -> Option<Task<Result<()>>> {
4579 let active_item = workspace.active_item(cx)?;
4580 let editor_handle = active_item.act_as::<Self>(cx)?;
4581
4582 let editor = editor_handle.read(cx);
4583 let head = editor.newest_selection::<usize>(cx).head();
4584 let (buffer, head) = editor.buffer.read(cx).text_anchor_for_position(head, cx)?;
4585 let replica_id = editor.replica_id(cx);
4586
4587 let project = workspace.project().clone();
4588 let references = project.update(cx, |project, cx| project.references(&buffer, head, cx));
4589 Some(cx.spawn(|workspace, mut cx| async move {
4590 let mut locations = references.await?;
4591 if locations.is_empty() {
4592 return Ok(());
4593 }
4594
4595 locations.sort_by_key(|location| location.buffer.id());
4596 let mut locations = locations.into_iter().peekable();
4597 let mut ranges_to_highlight = Vec::new();
4598
4599 let excerpt_buffer = cx.add_model(|cx| {
4600 let mut symbol_name = None;
4601 let mut multibuffer = MultiBuffer::new(replica_id);
4602 while let Some(location) = locations.next() {
4603 let buffer = location.buffer.read(cx);
4604 let mut ranges_for_buffer = Vec::new();
4605 let range = location.range.to_offset(buffer);
4606 ranges_for_buffer.push(range.clone());
4607 if symbol_name.is_none() {
4608 symbol_name = Some(buffer.text_for_range(range).collect::<String>());
4609 }
4610
4611 while let Some(next_location) = locations.peek() {
4612 if next_location.buffer == location.buffer {
4613 ranges_for_buffer.push(next_location.range.to_offset(buffer));
4614 locations.next();
4615 } else {
4616 break;
4617 }
4618 }
4619
4620 ranges_for_buffer.sort_by_key(|range| (range.start, Reverse(range.end)));
4621 ranges_to_highlight.extend(multibuffer.push_excerpts_with_context_lines(
4622 location.buffer.clone(),
4623 ranges_for_buffer,
4624 1,
4625 cx,
4626 ));
4627 }
4628 multibuffer.with_title(format!("References to `{}`", symbol_name.unwrap()))
4629 });
4630
4631 workspace.update(&mut cx, |workspace, cx| {
4632 let editor =
4633 cx.add_view(|cx| Editor::for_multibuffer(excerpt_buffer, Some(project), cx));
4634 editor.update(cx, |editor, cx| {
4635 let color = editor.style(cx).highlighted_line_background;
4636 editor.highlight_background::<Self>(ranges_to_highlight, color, cx);
4637 });
4638 workspace.add_item(Box::new(editor), cx);
4639 });
4640
4641 Ok(())
4642 }))
4643 }
4644
4645 pub fn rename(&mut self, _: &Rename, cx: &mut ViewContext<Self>) -> Option<Task<Result<()>>> {
4646 use language::ToOffset as _;
4647
4648 let project = self.project.clone()?;
4649 let selection = self.newest_anchor_selection().clone();
4650 let (cursor_buffer, cursor_buffer_position) = self
4651 .buffer
4652 .read(cx)
4653 .text_anchor_for_position(selection.head(), cx)?;
4654 let (tail_buffer, _) = self
4655 .buffer
4656 .read(cx)
4657 .text_anchor_for_position(selection.tail(), cx)?;
4658 if tail_buffer != cursor_buffer {
4659 return None;
4660 }
4661
4662 let snapshot = cursor_buffer.read(cx).snapshot();
4663 let cursor_buffer_offset = cursor_buffer_position.to_offset(&snapshot);
4664 let prepare_rename = project.update(cx, |project, cx| {
4665 project.prepare_rename(cursor_buffer, cursor_buffer_offset, cx)
4666 });
4667
4668 Some(cx.spawn(|this, mut cx| async move {
4669 if let Some(rename_range) = prepare_rename.await? {
4670 let rename_buffer_range = rename_range.to_offset(&snapshot);
4671 let cursor_offset_in_rename_range =
4672 cursor_buffer_offset.saturating_sub(rename_buffer_range.start);
4673
4674 this.update(&mut cx, |this, cx| {
4675 this.take_rename(false, cx);
4676 let style = this.style(cx);
4677 let buffer = this.buffer.read(cx).read(cx);
4678 let cursor_offset = selection.head().to_offset(&buffer);
4679 let rename_start = cursor_offset.saturating_sub(cursor_offset_in_rename_range);
4680 let rename_end = rename_start + rename_buffer_range.len();
4681 let range = buffer.anchor_before(rename_start)..buffer.anchor_after(rename_end);
4682 let mut old_highlight_id = None;
4683 let old_name = buffer
4684 .chunks(rename_start..rename_end, true)
4685 .map(|chunk| {
4686 if old_highlight_id.is_none() {
4687 old_highlight_id = chunk.syntax_highlight_id;
4688 }
4689 chunk.text
4690 })
4691 .collect();
4692
4693 drop(buffer);
4694
4695 // Position the selection in the rename editor so that it matches the current selection.
4696 this.show_local_selections = false;
4697 let rename_editor = cx.add_view(|cx| {
4698 let mut editor = Editor::single_line(None, cx);
4699 if let Some(old_highlight_id) = old_highlight_id {
4700 editor.override_text_style =
4701 Some(Box::new(move |style| old_highlight_id.style(&style.syntax)));
4702 }
4703 editor
4704 .buffer
4705 .update(cx, |buffer, cx| buffer.edit([0..0], &old_name, cx));
4706 editor.select_all(&SelectAll, cx);
4707 editor
4708 });
4709
4710 let ranges = this
4711 .clear_background_highlights::<DocumentHighlightWrite>(cx)
4712 .into_iter()
4713 .flat_map(|(_, ranges)| ranges)
4714 .chain(
4715 this.clear_background_highlights::<DocumentHighlightRead>(cx)
4716 .into_iter()
4717 .flat_map(|(_, ranges)| ranges),
4718 )
4719 .collect();
4720
4721 this.highlight_text::<Rename>(
4722 ranges,
4723 HighlightStyle {
4724 fade_out: Some(style.rename_fade),
4725 ..Default::default()
4726 },
4727 cx,
4728 );
4729 cx.focus(&rename_editor);
4730 let block_id = this.insert_blocks(
4731 [BlockProperties {
4732 position: range.start.clone(),
4733 height: 1,
4734 render: Arc::new({
4735 let editor = rename_editor.clone();
4736 move |cx: &BlockContext| {
4737 ChildView::new(editor.clone())
4738 .contained()
4739 .with_padding_left(cx.anchor_x)
4740 .boxed()
4741 }
4742 }),
4743 disposition: BlockDisposition::Below,
4744 }],
4745 cx,
4746 )[0];
4747 this.pending_rename = Some(RenameState {
4748 range,
4749 old_name,
4750 editor: rename_editor,
4751 block_id,
4752 });
4753 });
4754 }
4755
4756 Ok(())
4757 }))
4758 }
4759
4760 pub fn confirm_rename(
4761 workspace: &mut Workspace,
4762 _: &ConfirmRename,
4763 cx: &mut ViewContext<Workspace>,
4764 ) -> Option<Task<Result<()>>> {
4765 let editor = workspace.active_item(cx)?.act_as::<Editor>(cx)?;
4766
4767 let (buffer, range, old_name, new_name) = editor.update(cx, |editor, cx| {
4768 let rename = editor.take_rename(false, cx)?;
4769 let buffer = editor.buffer.read(cx);
4770 let (start_buffer, start) =
4771 buffer.text_anchor_for_position(rename.range.start.clone(), cx)?;
4772 let (end_buffer, end) =
4773 buffer.text_anchor_for_position(rename.range.end.clone(), cx)?;
4774 if start_buffer == end_buffer {
4775 let new_name = rename.editor.read(cx).text(cx);
4776 Some((start_buffer, start..end, rename.old_name, new_name))
4777 } else {
4778 None
4779 }
4780 })?;
4781
4782 let rename = workspace.project().clone().update(cx, |project, cx| {
4783 project.perform_rename(
4784 buffer.clone(),
4785 range.start.clone(),
4786 new_name.clone(),
4787 true,
4788 cx,
4789 )
4790 });
4791
4792 Some(cx.spawn(|workspace, mut cx| async move {
4793 let project_transaction = rename.await?;
4794 Self::open_project_transaction(
4795 editor.clone(),
4796 workspace,
4797 project_transaction,
4798 format!("Rename: {} → {}", old_name, new_name),
4799 cx.clone(),
4800 )
4801 .await?;
4802
4803 editor.update(&mut cx, |editor, cx| {
4804 editor.refresh_document_highlights(cx);
4805 });
4806 Ok(())
4807 }))
4808 }
4809
4810 fn take_rename(
4811 &mut self,
4812 moving_cursor: bool,
4813 cx: &mut ViewContext<Self>,
4814 ) -> Option<RenameState> {
4815 let rename = self.pending_rename.take()?;
4816 self.remove_blocks([rename.block_id].into_iter().collect(), cx);
4817 self.clear_text_highlights::<Rename>(cx);
4818 self.show_local_selections = true;
4819
4820 if moving_cursor {
4821 let cursor_in_rename_editor =
4822 rename.editor.read(cx).newest_selection::<usize>(cx).head();
4823
4824 // Update the selection to match the position of the selection inside
4825 // the rename editor.
4826 let snapshot = self.buffer.read(cx).read(cx);
4827 let rename_range = rename.range.to_offset(&snapshot);
4828 let cursor_in_editor = snapshot
4829 .clip_offset(rename_range.start + cursor_in_rename_editor, Bias::Left)
4830 .min(rename_range.end);
4831 drop(snapshot);
4832
4833 self.update_selections(
4834 vec![Selection {
4835 id: self.newest_anchor_selection().id,
4836 start: cursor_in_editor,
4837 end: cursor_in_editor,
4838 reversed: false,
4839 goal: SelectionGoal::None,
4840 }],
4841 None,
4842 cx,
4843 );
4844 }
4845
4846 Some(rename)
4847 }
4848
4849 fn invalidate_rename_range(
4850 &mut self,
4851 buffer: &MultiBufferSnapshot,
4852 cx: &mut ViewContext<Self>,
4853 ) {
4854 if let Some(rename) = self.pending_rename.as_ref() {
4855 if self.selections.len() == 1 {
4856 let head = self.selections[0].head().to_offset(buffer);
4857 let range = rename.range.to_offset(buffer).to_inclusive();
4858 if range.contains(&head) {
4859 return;
4860 }
4861 }
4862 let rename = self.pending_rename.take().unwrap();
4863 self.remove_blocks([rename.block_id].into_iter().collect(), cx);
4864 self.clear_background_highlights::<Rename>(cx);
4865 }
4866 }
4867
4868 #[cfg(any(test, feature = "test-support"))]
4869 pub fn pending_rename(&self) -> Option<&RenameState> {
4870 self.pending_rename.as_ref()
4871 }
4872
4873 fn restart_language_server(&mut self, _: &RestartLanguageServer, cx: &mut ViewContext<Self>) {
4874 if let Some(project) = self.project.clone() {
4875 self.buffer.update(cx, |multi_buffer, cx| {
4876 project.update(cx, |project, cx| {
4877 project.restart_language_servers_for_buffers(multi_buffer.all_buffers(), cx);
4878 });
4879 })
4880 }
4881 }
4882
4883 fn refresh_active_diagnostics(&mut self, cx: &mut ViewContext<Editor>) {
4884 if let Some(active_diagnostics) = self.active_diagnostics.as_mut() {
4885 let buffer = self.buffer.read(cx).snapshot(cx);
4886 let primary_range_start = active_diagnostics.primary_range.start.to_offset(&buffer);
4887 let is_valid = buffer
4888 .diagnostics_in_range::<_, usize>(active_diagnostics.primary_range.clone(), false)
4889 .any(|entry| {
4890 entry.diagnostic.is_primary
4891 && !entry.range.is_empty()
4892 && entry.range.start == primary_range_start
4893 && entry.diagnostic.message == active_diagnostics.primary_message
4894 });
4895
4896 if is_valid != active_diagnostics.is_valid {
4897 active_diagnostics.is_valid = is_valid;
4898 let mut new_styles = HashMap::default();
4899 for (block_id, diagnostic) in &active_diagnostics.blocks {
4900 new_styles.insert(
4901 *block_id,
4902 diagnostic_block_renderer(diagnostic.clone(), is_valid),
4903 );
4904 }
4905 self.display_map
4906 .update(cx, |display_map, _| display_map.replace_blocks(new_styles));
4907 }
4908 }
4909 }
4910
4911 fn activate_diagnostics(&mut self, group_id: usize, cx: &mut ViewContext<Self>) {
4912 self.dismiss_diagnostics(cx);
4913 self.active_diagnostics = self.display_map.update(cx, |display_map, cx| {
4914 let buffer = self.buffer.read(cx).snapshot(cx);
4915
4916 let mut primary_range = None;
4917 let mut primary_message = None;
4918 let mut group_end = Point::zero();
4919 let diagnostic_group = buffer
4920 .diagnostic_group::<Point>(group_id)
4921 .map(|entry| {
4922 if entry.range.end > group_end {
4923 group_end = entry.range.end;
4924 }
4925 if entry.diagnostic.is_primary {
4926 primary_range = Some(entry.range.clone());
4927 primary_message = Some(entry.diagnostic.message.clone());
4928 }
4929 entry
4930 })
4931 .collect::<Vec<_>>();
4932 let primary_range = primary_range.unwrap();
4933 let primary_message = primary_message.unwrap();
4934 let primary_range =
4935 buffer.anchor_after(primary_range.start)..buffer.anchor_before(primary_range.end);
4936
4937 let blocks = display_map
4938 .insert_blocks(
4939 diagnostic_group.iter().map(|entry| {
4940 let diagnostic = entry.diagnostic.clone();
4941 let message_height = diagnostic.message.lines().count() as u8;
4942 BlockProperties {
4943 position: buffer.anchor_after(entry.range.start),
4944 height: message_height,
4945 render: diagnostic_block_renderer(diagnostic, true),
4946 disposition: BlockDisposition::Below,
4947 }
4948 }),
4949 cx,
4950 )
4951 .into_iter()
4952 .zip(diagnostic_group.into_iter().map(|entry| entry.diagnostic))
4953 .collect();
4954
4955 Some(ActiveDiagnosticGroup {
4956 primary_range,
4957 primary_message,
4958 blocks,
4959 is_valid: true,
4960 })
4961 });
4962 }
4963
4964 fn dismiss_diagnostics(&mut self, cx: &mut ViewContext<Self>) {
4965 if let Some(active_diagnostic_group) = self.active_diagnostics.take() {
4966 self.display_map.update(cx, |display_map, cx| {
4967 display_map.remove_blocks(active_diagnostic_group.blocks.into_keys().collect(), cx);
4968 });
4969 cx.notify();
4970 }
4971 }
4972
4973 fn build_columnar_selection(
4974 &mut self,
4975 display_map: &DisplaySnapshot,
4976 row: u32,
4977 columns: &Range<u32>,
4978 reversed: bool,
4979 ) -> Option<Selection<Point>> {
4980 let is_empty = columns.start == columns.end;
4981 let line_len = display_map.line_len(row);
4982 if columns.start < line_len || (is_empty && columns.start == line_len) {
4983 let start = DisplayPoint::new(row, columns.start);
4984 let end = DisplayPoint::new(row, cmp::min(columns.end, line_len));
4985 Some(Selection {
4986 id: post_inc(&mut self.next_selection_id),
4987 start: start.to_point(display_map),
4988 end: end.to_point(display_map),
4989 reversed,
4990 goal: SelectionGoal::ColumnRange {
4991 start: columns.start,
4992 end: columns.end,
4993 },
4994 })
4995 } else {
4996 None
4997 }
4998 }
4999
5000 pub fn local_selections_in_range(
5001 &self,
5002 range: Range<Anchor>,
5003 display_map: &DisplaySnapshot,
5004 ) -> Vec<Selection<Point>> {
5005 let buffer = &display_map.buffer_snapshot;
5006
5007 let start_ix = match self
5008 .selections
5009 .binary_search_by(|probe| probe.end.cmp(&range.start, &buffer))
5010 {
5011 Ok(ix) | Err(ix) => ix,
5012 };
5013 let end_ix = match self
5014 .selections
5015 .binary_search_by(|probe| probe.start.cmp(&range.end, &buffer))
5016 {
5017 Ok(ix) => ix + 1,
5018 Err(ix) => ix,
5019 };
5020
5021 fn point_selection(
5022 selection: &Selection<Anchor>,
5023 buffer: &MultiBufferSnapshot,
5024 ) -> Selection<Point> {
5025 let start = selection.start.to_point(&buffer);
5026 let end = selection.end.to_point(&buffer);
5027 Selection {
5028 id: selection.id,
5029 start,
5030 end,
5031 reversed: selection.reversed,
5032 goal: selection.goal,
5033 }
5034 }
5035
5036 self.selections[start_ix..end_ix]
5037 .iter()
5038 .chain(
5039 self.pending_selection
5040 .as_ref()
5041 .map(|pending| &pending.selection),
5042 )
5043 .map(|s| point_selection(s, &buffer))
5044 .collect()
5045 }
5046
5047 pub fn local_selections<'a, D>(&self, cx: &'a AppContext) -> Vec<Selection<D>>
5048 where
5049 D: 'a + TextDimension + Ord + Sub<D, Output = D>,
5050 {
5051 let buffer = self.buffer.read(cx).snapshot(cx);
5052 let mut selections = self
5053 .resolve_selections::<D, _>(self.selections.iter(), &buffer)
5054 .peekable();
5055
5056 let mut pending_selection = self.pending_selection::<D>(&buffer);
5057
5058 iter::from_fn(move || {
5059 if let Some(pending) = pending_selection.as_mut() {
5060 while let Some(next_selection) = selections.peek() {
5061 if pending.start <= next_selection.end && pending.end >= next_selection.start {
5062 let next_selection = selections.next().unwrap();
5063 if next_selection.start < pending.start {
5064 pending.start = next_selection.start;
5065 }
5066 if next_selection.end > pending.end {
5067 pending.end = next_selection.end;
5068 }
5069 } else if next_selection.end < pending.start {
5070 return selections.next();
5071 } else {
5072 break;
5073 }
5074 }
5075
5076 pending_selection.take()
5077 } else {
5078 selections.next()
5079 }
5080 })
5081 .collect()
5082 }
5083
5084 fn resolve_selections<'a, D, I>(
5085 &self,
5086 selections: I,
5087 snapshot: &MultiBufferSnapshot,
5088 ) -> impl 'a + Iterator<Item = Selection<D>>
5089 where
5090 D: TextDimension + Ord + Sub<D, Output = D>,
5091 I: 'a + IntoIterator<Item = &'a Selection<Anchor>>,
5092 {
5093 let (to_summarize, selections) = selections.into_iter().tee();
5094 let mut summaries = snapshot
5095 .summaries_for_anchors::<D, _>(to_summarize.flat_map(|s| [&s.start, &s.end]))
5096 .into_iter();
5097 selections.map(move |s| Selection {
5098 id: s.id,
5099 start: summaries.next().unwrap(),
5100 end: summaries.next().unwrap(),
5101 reversed: s.reversed,
5102 goal: s.goal,
5103 })
5104 }
5105
5106 fn pending_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
5107 &self,
5108 snapshot: &MultiBufferSnapshot,
5109 ) -> Option<Selection<D>> {
5110 self.pending_selection
5111 .as_ref()
5112 .map(|pending| self.resolve_selection(&pending.selection, &snapshot))
5113 }
5114
5115 fn resolve_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
5116 &self,
5117 selection: &Selection<Anchor>,
5118 buffer: &MultiBufferSnapshot,
5119 ) -> Selection<D> {
5120 Selection {
5121 id: selection.id,
5122 start: selection.start.summary::<D>(&buffer),
5123 end: selection.end.summary::<D>(&buffer),
5124 reversed: selection.reversed,
5125 goal: selection.goal,
5126 }
5127 }
5128
5129 fn selection_count<'a>(&self) -> usize {
5130 let mut count = self.selections.len();
5131 if self.pending_selection.is_some() {
5132 count += 1;
5133 }
5134 count
5135 }
5136
5137 pub fn oldest_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
5138 &self,
5139 cx: &AppContext,
5140 ) -> Selection<D> {
5141 let snapshot = self.buffer.read(cx).read(cx);
5142 self.selections
5143 .iter()
5144 .min_by_key(|s| s.id)
5145 .map(|selection| self.resolve_selection(selection, &snapshot))
5146 .or_else(|| self.pending_selection(&snapshot))
5147 .unwrap()
5148 }
5149
5150 pub fn newest_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
5151 &self,
5152 cx: &AppContext,
5153 ) -> Selection<D> {
5154 self.resolve_selection(
5155 self.newest_anchor_selection(),
5156 &self.buffer.read(cx).read(cx),
5157 )
5158 }
5159
5160 pub fn newest_selection_with_snapshot<D: TextDimension + Ord + Sub<D, Output = D>>(
5161 &self,
5162 snapshot: &MultiBufferSnapshot,
5163 ) -> Selection<D> {
5164 self.resolve_selection(self.newest_anchor_selection(), snapshot)
5165 }
5166
5167 pub fn newest_anchor_selection(&self) -> &Selection<Anchor> {
5168 self.pending_selection
5169 .as_ref()
5170 .map(|s| &s.selection)
5171 .or_else(|| self.selections.iter().max_by_key(|s| s.id))
5172 .unwrap()
5173 }
5174
5175 pub fn update_selections<T>(
5176 &mut self,
5177 mut selections: Vec<Selection<T>>,
5178 autoscroll: Option<Autoscroll>,
5179 cx: &mut ViewContext<Self>,
5180 ) where
5181 T: ToOffset + ToPoint + Ord + std::marker::Copy + std::fmt::Debug,
5182 {
5183 let buffer = self.buffer.read(cx).snapshot(cx);
5184 selections.sort_unstable_by_key(|s| s.start);
5185
5186 // Merge overlapping selections.
5187 let mut i = 1;
5188 while i < selections.len() {
5189 if selections[i - 1].end >= selections[i].start {
5190 let removed = selections.remove(i);
5191 if removed.start < selections[i - 1].start {
5192 selections[i - 1].start = removed.start;
5193 }
5194 if removed.end > selections[i - 1].end {
5195 selections[i - 1].end = removed.end;
5196 }
5197 } else {
5198 i += 1;
5199 }
5200 }
5201
5202 if let Some(autoscroll) = autoscroll {
5203 self.request_autoscroll(autoscroll, cx);
5204 }
5205
5206 self.set_selections(
5207 Arc::from_iter(selections.into_iter().map(|selection| {
5208 let end_bias = if selection.end > selection.start {
5209 Bias::Left
5210 } else {
5211 Bias::Right
5212 };
5213 Selection {
5214 id: selection.id,
5215 start: buffer.anchor_after(selection.start),
5216 end: buffer.anchor_at(selection.end, end_bias),
5217 reversed: selection.reversed,
5218 goal: selection.goal,
5219 }
5220 })),
5221 None,
5222 true,
5223 cx,
5224 );
5225 }
5226
5227 pub fn set_selections_from_remote(
5228 &mut self,
5229 mut selections: Vec<Selection<Anchor>>,
5230 cx: &mut ViewContext<Self>,
5231 ) {
5232 let buffer = self.buffer.read(cx);
5233 let buffer = buffer.read(cx);
5234 selections.sort_by(|a, b| {
5235 a.start
5236 .cmp(&b.start, &*buffer)
5237 .then_with(|| b.end.cmp(&a.end, &*buffer))
5238 });
5239
5240 // Merge overlapping selections
5241 let mut i = 1;
5242 while i < selections.len() {
5243 if selections[i - 1]
5244 .end
5245 .cmp(&selections[i].start, &*buffer)
5246 .is_ge()
5247 {
5248 let removed = selections.remove(i);
5249 if removed
5250 .start
5251 .cmp(&selections[i - 1].start, &*buffer)
5252 .is_lt()
5253 {
5254 selections[i - 1].start = removed.start;
5255 }
5256 if removed.end.cmp(&selections[i - 1].end, &*buffer).is_gt() {
5257 selections[i - 1].end = removed.end;
5258 }
5259 } else {
5260 i += 1;
5261 }
5262 }
5263
5264 drop(buffer);
5265 self.set_selections(selections.into(), None, false, cx);
5266 }
5267
5268 /// Compute new ranges for any selections that were located in excerpts that have
5269 /// since been removed.
5270 ///
5271 /// Returns a `HashMap` indicating which selections whose former head position
5272 /// was no longer present. The keys of the map are selection ids. The values are
5273 /// the id of the new excerpt where the head of the selection has been moved.
5274 pub fn refresh_selections(&mut self, cx: &mut ViewContext<Self>) -> HashMap<usize, ExcerptId> {
5275 let snapshot = self.buffer.read(cx).read(cx);
5276 let mut selections_with_lost_position = HashMap::default();
5277
5278 let mut pending_selection = self.pending_selection.take();
5279 if let Some(pending) = pending_selection.as_mut() {
5280 let anchors =
5281 snapshot.refresh_anchors([&pending.selection.start, &pending.selection.end]);
5282 let (_, start, kept_start) = anchors[0].clone();
5283 let (_, end, kept_end) = anchors[1].clone();
5284 let kept_head = if pending.selection.reversed {
5285 kept_start
5286 } else {
5287 kept_end
5288 };
5289 if !kept_head {
5290 selections_with_lost_position.insert(
5291 pending.selection.id,
5292 pending.selection.head().excerpt_id.clone(),
5293 );
5294 }
5295
5296 pending.selection.start = start;
5297 pending.selection.end = end;
5298 }
5299
5300 let anchors_with_status = snapshot.refresh_anchors(
5301 self.selections
5302 .iter()
5303 .flat_map(|selection| [&selection.start, &selection.end]),
5304 );
5305 self.selections = anchors_with_status
5306 .chunks(2)
5307 .map(|selection_anchors| {
5308 let (anchor_ix, start, kept_start) = selection_anchors[0].clone();
5309 let (_, end, kept_end) = selection_anchors[1].clone();
5310 let selection = &self.selections[anchor_ix / 2];
5311 let kept_head = if selection.reversed {
5312 kept_start
5313 } else {
5314 kept_end
5315 };
5316 if !kept_head {
5317 selections_with_lost_position
5318 .insert(selection.id, selection.head().excerpt_id.clone());
5319 }
5320
5321 Selection {
5322 id: selection.id,
5323 start,
5324 end,
5325 reversed: selection.reversed,
5326 goal: selection.goal,
5327 }
5328 })
5329 .collect();
5330 drop(snapshot);
5331
5332 let new_selections = self.local_selections::<usize>(cx);
5333 if !new_selections.is_empty() {
5334 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
5335 }
5336 self.pending_selection = pending_selection;
5337
5338 selections_with_lost_position
5339 }
5340
5341 fn set_selections(
5342 &mut self,
5343 selections: Arc<[Selection<Anchor>]>,
5344 pending_selection: Option<PendingSelection>,
5345 local: bool,
5346 cx: &mut ViewContext<Self>,
5347 ) {
5348 assert!(
5349 !selections.is_empty() || pending_selection.is_some(),
5350 "must have at least one selection"
5351 );
5352
5353 let old_cursor_position = self.newest_anchor_selection().head();
5354
5355 self.push_to_selection_history();
5356 self.selections = selections;
5357 self.pending_selection = pending_selection;
5358 if self.focused && self.leader_replica_id.is_none() {
5359 self.buffer.update(cx, |buffer, cx| {
5360 buffer.set_active_selections(&self.selections, cx)
5361 });
5362 }
5363
5364 let display_map = self
5365 .display_map
5366 .update(cx, |display_map, cx| display_map.snapshot(cx));
5367 let buffer = &display_map.buffer_snapshot;
5368 self.add_selections_state = None;
5369 self.select_next_state = None;
5370 self.select_larger_syntax_node_stack.clear();
5371 self.autoclose_stack.invalidate(&self.selections, &buffer);
5372 self.snippet_stack.invalidate(&self.selections, &buffer);
5373 self.invalidate_rename_range(&buffer, cx);
5374
5375 let new_cursor_position = self.newest_anchor_selection().head();
5376
5377 self.push_to_nav_history(
5378 old_cursor_position.clone(),
5379 Some(new_cursor_position.to_point(&buffer)),
5380 cx,
5381 );
5382
5383 if local {
5384 let completion_menu = match self.context_menu.as_mut() {
5385 Some(ContextMenu::Completions(menu)) => Some(menu),
5386 _ => {
5387 self.context_menu.take();
5388 None
5389 }
5390 };
5391
5392 if let Some(completion_menu) = completion_menu {
5393 let cursor_position = new_cursor_position.to_offset(&buffer);
5394 let (word_range, kind) =
5395 buffer.surrounding_word(completion_menu.initial_position.clone());
5396 if kind == Some(CharKind::Word)
5397 && word_range.to_inclusive().contains(&cursor_position)
5398 {
5399 let query = Self::completion_query(&buffer, cursor_position);
5400 cx.background()
5401 .block(completion_menu.filter(query.as_deref(), cx.background().clone()));
5402 self.show_completions(&ShowCompletions, cx);
5403 } else {
5404 self.hide_context_menu(cx);
5405 }
5406 }
5407
5408 if old_cursor_position.to_display_point(&display_map).row()
5409 != new_cursor_position.to_display_point(&display_map).row()
5410 {
5411 self.available_code_actions.take();
5412 }
5413 self.refresh_code_actions(cx);
5414 self.refresh_document_highlights(cx);
5415 }
5416
5417 self.pause_cursor_blinking(cx);
5418 cx.emit(Event::SelectionsChanged { local });
5419 }
5420
5421 fn push_to_selection_history(&mut self) {
5422 self.selection_history.push(SelectionHistoryEntry {
5423 selections: self.selections.clone(),
5424 select_next_state: self.select_next_state.clone(),
5425 add_selections_state: self.add_selections_state.clone(),
5426 });
5427 }
5428
5429 pub fn request_autoscroll(&mut self, autoscroll: Autoscroll, cx: &mut ViewContext<Self>) {
5430 self.autoscroll_request = Some((autoscroll, true));
5431 cx.notify();
5432 }
5433
5434 fn request_autoscroll_remotely(&mut self, autoscroll: Autoscroll, cx: &mut ViewContext<Self>) {
5435 self.autoscroll_request = Some((autoscroll, false));
5436 cx.notify();
5437 }
5438
5439 pub fn transact(
5440 &mut self,
5441 cx: &mut ViewContext<Self>,
5442 update: impl FnOnce(&mut Self, &mut ViewContext<Self>),
5443 ) {
5444 self.start_transaction_at(Instant::now(), cx);
5445 update(self, cx);
5446 self.end_transaction_at(Instant::now(), cx);
5447 }
5448
5449 fn start_transaction_at(&mut self, now: Instant, cx: &mut ViewContext<Self>) {
5450 self.end_selection(cx);
5451 if let Some(tx_id) = self
5452 .buffer
5453 .update(cx, |buffer, cx| buffer.start_transaction_at(now, cx))
5454 {
5455 self.selection_history
5456 .insert_transaction(tx_id, self.selections.clone());
5457 }
5458 }
5459
5460 fn end_transaction_at(&mut self, now: Instant, cx: &mut ViewContext<Self>) {
5461 if let Some(tx_id) = self
5462 .buffer
5463 .update(cx, |buffer, cx| buffer.end_transaction_at(now, cx))
5464 {
5465 if let Some((_, end_selections)) = self.selection_history.transaction_mut(tx_id) {
5466 *end_selections = Some(self.selections.clone());
5467 } else {
5468 log::error!("unexpectedly ended a transaction that wasn't started by this editor");
5469 }
5470
5471 cx.emit(Event::Edited);
5472 }
5473 }
5474
5475 pub fn page_up(&mut self, _: &PageUp, _: &mut ViewContext<Self>) {
5476 log::info!("Editor::page_up");
5477 }
5478
5479 pub fn page_down(&mut self, _: &PageDown, _: &mut ViewContext<Self>) {
5480 log::info!("Editor::page_down");
5481 }
5482
5483 pub fn fold(&mut self, _: &Fold, cx: &mut ViewContext<Self>) {
5484 let mut fold_ranges = Vec::new();
5485
5486 let selections = self.local_selections::<Point>(cx);
5487 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
5488 for selection in selections {
5489 let range = selection.display_range(&display_map).sorted();
5490 let buffer_start_row = range.start.to_point(&display_map).row;
5491
5492 for row in (0..=range.end.row()).rev() {
5493 if self.is_line_foldable(&display_map, row) && !display_map.is_line_folded(row) {
5494 let fold_range = self.foldable_range_for_line(&display_map, row);
5495 if fold_range.end.row >= buffer_start_row {
5496 fold_ranges.push(fold_range);
5497 if row <= range.start.row() {
5498 break;
5499 }
5500 }
5501 }
5502 }
5503 }
5504
5505 self.fold_ranges(fold_ranges, cx);
5506 }
5507
5508 pub fn unfold_lines(&mut self, _: &UnfoldLines, cx: &mut ViewContext<Self>) {
5509 let selections = self.local_selections::<Point>(cx);
5510 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
5511 let buffer = &display_map.buffer_snapshot;
5512 let ranges = selections
5513 .iter()
5514 .map(|s| {
5515 let range = s.display_range(&display_map).sorted();
5516 let mut start = range.start.to_point(&display_map);
5517 let mut end = range.end.to_point(&display_map);
5518 start.column = 0;
5519 end.column = buffer.line_len(end.row);
5520 start..end
5521 })
5522 .collect::<Vec<_>>();
5523 self.unfold_ranges(ranges, true, cx);
5524 }
5525
5526 fn is_line_foldable(&self, display_map: &DisplaySnapshot, display_row: u32) -> bool {
5527 let max_point = display_map.max_point();
5528 if display_row >= max_point.row() {
5529 false
5530 } else {
5531 let (start_indent, is_blank) = display_map.line_indent(display_row);
5532 if is_blank {
5533 false
5534 } else {
5535 for display_row in display_row + 1..=max_point.row() {
5536 let (indent, is_blank) = display_map.line_indent(display_row);
5537 if !is_blank {
5538 return indent > start_indent;
5539 }
5540 }
5541 false
5542 }
5543 }
5544 }
5545
5546 fn foldable_range_for_line(
5547 &self,
5548 display_map: &DisplaySnapshot,
5549 start_row: u32,
5550 ) -> Range<Point> {
5551 let max_point = display_map.max_point();
5552
5553 let (start_indent, _) = display_map.line_indent(start_row);
5554 let start = DisplayPoint::new(start_row, display_map.line_len(start_row));
5555 let mut end = None;
5556 for row in start_row + 1..=max_point.row() {
5557 let (indent, is_blank) = display_map.line_indent(row);
5558 if !is_blank && indent <= start_indent {
5559 end = Some(DisplayPoint::new(row - 1, display_map.line_len(row - 1)));
5560 break;
5561 }
5562 }
5563
5564 let end = end.unwrap_or(max_point);
5565 return start.to_point(display_map)..end.to_point(display_map);
5566 }
5567
5568 pub fn fold_selected_ranges(&mut self, _: &FoldSelectedRanges, cx: &mut ViewContext<Self>) {
5569 let selections = self.local_selections::<Point>(cx);
5570 let ranges = selections.into_iter().map(|s| s.start..s.end);
5571 self.fold_ranges(ranges, cx);
5572 }
5573
5574 pub fn fold_ranges<T: ToOffset>(
5575 &mut self,
5576 ranges: impl IntoIterator<Item = Range<T>>,
5577 cx: &mut ViewContext<Self>,
5578 ) {
5579 let mut ranges = ranges.into_iter().peekable();
5580 if ranges.peek().is_some() {
5581 self.display_map.update(cx, |map, cx| map.fold(ranges, cx));
5582 self.request_autoscroll(Autoscroll::Fit, cx);
5583 cx.notify();
5584 }
5585 }
5586
5587 pub fn unfold_ranges<T: ToOffset>(
5588 &mut self,
5589 ranges: impl IntoIterator<Item = Range<T>>,
5590 inclusive: bool,
5591 cx: &mut ViewContext<Self>,
5592 ) {
5593 let mut ranges = ranges.into_iter().peekable();
5594 if ranges.peek().is_some() {
5595 self.display_map
5596 .update(cx, |map, cx| map.unfold(ranges, inclusive, cx));
5597 self.request_autoscroll(Autoscroll::Fit, cx);
5598 cx.notify();
5599 }
5600 }
5601
5602 pub fn insert_blocks(
5603 &mut self,
5604 blocks: impl IntoIterator<Item = BlockProperties<Anchor>>,
5605 cx: &mut ViewContext<Self>,
5606 ) -> Vec<BlockId> {
5607 let blocks = self
5608 .display_map
5609 .update(cx, |display_map, cx| display_map.insert_blocks(blocks, cx));
5610 self.request_autoscroll(Autoscroll::Fit, cx);
5611 blocks
5612 }
5613
5614 pub fn replace_blocks(
5615 &mut self,
5616 blocks: HashMap<BlockId, RenderBlock>,
5617 cx: &mut ViewContext<Self>,
5618 ) {
5619 self.display_map
5620 .update(cx, |display_map, _| display_map.replace_blocks(blocks));
5621 self.request_autoscroll(Autoscroll::Fit, cx);
5622 }
5623
5624 pub fn remove_blocks(&mut self, block_ids: HashSet<BlockId>, cx: &mut ViewContext<Self>) {
5625 self.display_map.update(cx, |display_map, cx| {
5626 display_map.remove_blocks(block_ids, cx)
5627 });
5628 }
5629
5630 pub fn longest_row(&self, cx: &mut MutableAppContext) -> u32 {
5631 self.display_map
5632 .update(cx, |map, cx| map.snapshot(cx))
5633 .longest_row()
5634 }
5635
5636 pub fn max_point(&self, cx: &mut MutableAppContext) -> DisplayPoint {
5637 self.display_map
5638 .update(cx, |map, cx| map.snapshot(cx))
5639 .max_point()
5640 }
5641
5642 pub fn text(&self, cx: &AppContext) -> String {
5643 self.buffer.read(cx).read(cx).text()
5644 }
5645
5646 pub fn set_text(&mut self, text: impl Into<String>, cx: &mut ViewContext<Self>) {
5647 self.transact(cx, |this, cx| {
5648 this.buffer
5649 .read(cx)
5650 .as_singleton()
5651 .expect("you can only call set_text on editors for singleton buffers")
5652 .update(cx, |buffer, cx| buffer.set_text(text, cx));
5653 });
5654 }
5655
5656 pub fn display_text(&self, cx: &mut MutableAppContext) -> String {
5657 self.display_map
5658 .update(cx, |map, cx| map.snapshot(cx))
5659 .text()
5660 }
5661
5662 pub fn soft_wrap_mode(&self, cx: &AppContext) -> SoftWrap {
5663 let language = self.language(cx);
5664 let settings = cx.global::<Settings>();
5665 let mode = self
5666 .soft_wrap_mode_override
5667 .unwrap_or_else(|| settings.soft_wrap(language));
5668 match mode {
5669 settings::SoftWrap::None => SoftWrap::None,
5670 settings::SoftWrap::EditorWidth => SoftWrap::EditorWidth,
5671 settings::SoftWrap::PreferredLineLength => {
5672 SoftWrap::Column(settings.preferred_line_length(language))
5673 }
5674 }
5675 }
5676
5677 pub fn set_soft_wrap_mode(&mut self, mode: settings::SoftWrap, cx: &mut ViewContext<Self>) {
5678 self.soft_wrap_mode_override = Some(mode);
5679 cx.notify();
5680 }
5681
5682 pub fn set_wrap_width(&self, width: Option<f32>, cx: &mut MutableAppContext) -> bool {
5683 self.display_map
5684 .update(cx, |map, cx| map.set_wrap_width(width, cx))
5685 }
5686
5687 pub fn highlight_rows(&mut self, rows: Option<Range<u32>>) {
5688 self.highlighted_rows = rows;
5689 }
5690
5691 pub fn highlighted_rows(&self) -> Option<Range<u32>> {
5692 self.highlighted_rows.clone()
5693 }
5694
5695 pub fn highlight_background<T: 'static>(
5696 &mut self,
5697 ranges: Vec<Range<Anchor>>,
5698 color: Color,
5699 cx: &mut ViewContext<Self>,
5700 ) {
5701 self.background_highlights
5702 .insert(TypeId::of::<T>(), (color, ranges));
5703 cx.notify();
5704 }
5705
5706 pub fn clear_background_highlights<T: 'static>(
5707 &mut self,
5708 cx: &mut ViewContext<Self>,
5709 ) -> Option<(Color, Vec<Range<Anchor>>)> {
5710 cx.notify();
5711 self.background_highlights.remove(&TypeId::of::<T>())
5712 }
5713
5714 #[cfg(feature = "test-support")]
5715 pub fn all_background_highlights(
5716 &mut self,
5717 cx: &mut ViewContext<Self>,
5718 ) -> Vec<(Range<DisplayPoint>, Color)> {
5719 let snapshot = self.snapshot(cx);
5720 let buffer = &snapshot.buffer_snapshot;
5721 let start = buffer.anchor_before(0);
5722 let end = buffer.anchor_after(buffer.len());
5723 self.background_highlights_in_range(start..end, &snapshot)
5724 }
5725
5726 pub fn background_highlights_for_type<T: 'static>(&self) -> Option<(Color, &[Range<Anchor>])> {
5727 self.background_highlights
5728 .get(&TypeId::of::<T>())
5729 .map(|(color, ranges)| (*color, ranges.as_slice()))
5730 }
5731
5732 pub fn background_highlights_in_range(
5733 &self,
5734 search_range: Range<Anchor>,
5735 display_snapshot: &DisplaySnapshot,
5736 ) -> Vec<(Range<DisplayPoint>, Color)> {
5737 let mut results = Vec::new();
5738 let buffer = &display_snapshot.buffer_snapshot;
5739 for (color, ranges) in self.background_highlights.values() {
5740 let start_ix = match ranges.binary_search_by(|probe| {
5741 let cmp = probe.end.cmp(&search_range.start, &buffer);
5742 if cmp.is_gt() {
5743 Ordering::Greater
5744 } else {
5745 Ordering::Less
5746 }
5747 }) {
5748 Ok(i) | Err(i) => i,
5749 };
5750 for range in &ranges[start_ix..] {
5751 if range.start.cmp(&search_range.end, &buffer).is_ge() {
5752 break;
5753 }
5754 let start = range
5755 .start
5756 .to_point(buffer)
5757 .to_display_point(display_snapshot);
5758 let end = range
5759 .end
5760 .to_point(buffer)
5761 .to_display_point(display_snapshot);
5762 results.push((start..end, *color))
5763 }
5764 }
5765 results
5766 }
5767
5768 pub fn highlight_text<T: 'static>(
5769 &mut self,
5770 ranges: Vec<Range<Anchor>>,
5771 style: HighlightStyle,
5772 cx: &mut ViewContext<Self>,
5773 ) {
5774 self.display_map.update(cx, |map, _| {
5775 map.highlight_text(TypeId::of::<T>(), ranges, style)
5776 });
5777 cx.notify();
5778 }
5779
5780 pub fn clear_text_highlights<T: 'static>(
5781 &mut self,
5782 cx: &mut ViewContext<Self>,
5783 ) -> Option<Arc<(HighlightStyle, Vec<Range<Anchor>>)>> {
5784 cx.notify();
5785 self.display_map
5786 .update(cx, |map, _| map.clear_text_highlights(TypeId::of::<T>()))
5787 }
5788
5789 fn next_blink_epoch(&mut self) -> usize {
5790 self.blink_epoch += 1;
5791 self.blink_epoch
5792 }
5793
5794 fn pause_cursor_blinking(&mut self, cx: &mut ViewContext<Self>) {
5795 if !self.focused {
5796 return;
5797 }
5798
5799 self.show_local_cursors = true;
5800 cx.notify();
5801
5802 let epoch = self.next_blink_epoch();
5803 cx.spawn(|this, mut cx| {
5804 let this = this.downgrade();
5805 async move {
5806 Timer::after(CURSOR_BLINK_INTERVAL).await;
5807 if let Some(this) = this.upgrade(&cx) {
5808 this.update(&mut cx, |this, cx| this.resume_cursor_blinking(epoch, cx))
5809 }
5810 }
5811 })
5812 .detach();
5813 }
5814
5815 fn resume_cursor_blinking(&mut self, epoch: usize, cx: &mut ViewContext<Self>) {
5816 if epoch == self.blink_epoch {
5817 self.blinking_paused = false;
5818 self.blink_cursors(epoch, cx);
5819 }
5820 }
5821
5822 fn blink_cursors(&mut self, epoch: usize, cx: &mut ViewContext<Self>) {
5823 if epoch == self.blink_epoch && self.focused && !self.blinking_paused {
5824 self.show_local_cursors = !self.show_local_cursors;
5825 cx.notify();
5826
5827 let epoch = self.next_blink_epoch();
5828 cx.spawn(|this, mut cx| {
5829 let this = this.downgrade();
5830 async move {
5831 Timer::after(CURSOR_BLINK_INTERVAL).await;
5832 if let Some(this) = this.upgrade(&cx) {
5833 this.update(&mut cx, |this, cx| this.blink_cursors(epoch, cx));
5834 }
5835 }
5836 })
5837 .detach();
5838 }
5839 }
5840
5841 pub fn show_local_cursors(&self) -> bool {
5842 self.show_local_cursors && self.focused
5843 }
5844
5845 fn on_buffer_changed(&mut self, _: ModelHandle<MultiBuffer>, cx: &mut ViewContext<Self>) {
5846 cx.notify();
5847 }
5848
5849 fn on_buffer_event(
5850 &mut self,
5851 _: ModelHandle<MultiBuffer>,
5852 event: &language::Event,
5853 cx: &mut ViewContext<Self>,
5854 ) {
5855 match event {
5856 language::Event::Edited => {
5857 self.refresh_active_diagnostics(cx);
5858 self.refresh_code_actions(cx);
5859 cx.emit(Event::BufferEdited);
5860 }
5861 language::Event::Dirtied => cx.emit(Event::Dirtied),
5862 language::Event::Saved => cx.emit(Event::Saved),
5863 language::Event::FileHandleChanged => cx.emit(Event::TitleChanged),
5864 language::Event::Reloaded => cx.emit(Event::TitleChanged),
5865 language::Event::Closed => cx.emit(Event::Closed),
5866 language::Event::DiagnosticsUpdated => {
5867 self.refresh_active_diagnostics(cx);
5868 }
5869 _ => {}
5870 }
5871 }
5872
5873 fn on_display_map_changed(&mut self, _: ModelHandle<DisplayMap>, cx: &mut ViewContext<Self>) {
5874 cx.notify();
5875 }
5876
5877 pub fn set_searchable(&mut self, searchable: bool) {
5878 self.searchable = searchable;
5879 }
5880
5881 pub fn searchable(&self) -> bool {
5882 self.searchable
5883 }
5884
5885 fn open_excerpts(workspace: &mut Workspace, _: &OpenExcerpts, cx: &mut ViewContext<Workspace>) {
5886 let active_item = workspace.active_item(cx);
5887 let editor_handle = if let Some(editor) = active_item
5888 .as_ref()
5889 .and_then(|item| item.act_as::<Self>(cx))
5890 {
5891 editor
5892 } else {
5893 cx.propagate_action();
5894 return;
5895 };
5896
5897 let editor = editor_handle.read(cx);
5898 let buffer = editor.buffer.read(cx);
5899 if buffer.is_singleton() {
5900 cx.propagate_action();
5901 return;
5902 }
5903
5904 let mut new_selections_by_buffer = HashMap::default();
5905 for selection in editor.local_selections::<usize>(cx) {
5906 for (buffer, mut range) in
5907 buffer.range_to_buffer_ranges(selection.start..selection.end, cx)
5908 {
5909 if selection.reversed {
5910 mem::swap(&mut range.start, &mut range.end);
5911 }
5912 new_selections_by_buffer
5913 .entry(buffer)
5914 .or_insert(Vec::new())
5915 .push(range)
5916 }
5917 }
5918
5919 editor_handle.update(cx, |editor, cx| {
5920 editor.push_to_nav_history(editor.newest_anchor_selection().head(), None, cx);
5921 });
5922 let nav_history = workspace.active_pane().read(cx).nav_history().clone();
5923 nav_history.borrow_mut().disable();
5924
5925 // We defer the pane interaction because we ourselves are a workspace item
5926 // and activating a new item causes the pane to call a method on us reentrantly,
5927 // which panics if we're on the stack.
5928 cx.defer(move |workspace, cx| {
5929 workspace.activate_next_pane(cx);
5930
5931 for (buffer, ranges) in new_selections_by_buffer.into_iter() {
5932 let editor = workspace.open_project_item::<Self>(buffer, cx);
5933 editor.update(cx, |editor, cx| {
5934 editor.select_ranges(ranges, Some(Autoscroll::Newest), cx);
5935 });
5936 }
5937
5938 nav_history.borrow_mut().enable();
5939 });
5940 }
5941}
5942
5943impl EditorSnapshot {
5944 pub fn is_focused(&self) -> bool {
5945 self.is_focused
5946 }
5947
5948 pub fn placeholder_text(&self) -> Option<&Arc<str>> {
5949 self.placeholder_text.as_ref()
5950 }
5951
5952 pub fn scroll_position(&self) -> Vector2F {
5953 compute_scroll_position(
5954 &self.display_snapshot,
5955 self.scroll_position,
5956 &self.scroll_top_anchor,
5957 )
5958 }
5959}
5960
5961impl Deref for EditorSnapshot {
5962 type Target = DisplaySnapshot;
5963
5964 fn deref(&self) -> &Self::Target {
5965 &self.display_snapshot
5966 }
5967}
5968
5969fn compute_scroll_position(
5970 snapshot: &DisplaySnapshot,
5971 mut scroll_position: Vector2F,
5972 scroll_top_anchor: &Anchor,
5973) -> Vector2F {
5974 if *scroll_top_anchor != Anchor::min() {
5975 let scroll_top = scroll_top_anchor.to_display_point(snapshot).row() as f32;
5976 scroll_position.set_y(scroll_top + scroll_position.y());
5977 } else {
5978 scroll_position.set_y(0.);
5979 }
5980 scroll_position
5981}
5982
5983#[derive(Copy, Clone, Debug, PartialEq, Eq)]
5984pub enum Event {
5985 Activate,
5986 BufferEdited,
5987 Edited,
5988 Blurred,
5989 Dirtied,
5990 Saved,
5991 TitleChanged,
5992 SelectionsChanged { local: bool },
5993 ScrollPositionChanged { local: bool },
5994 Closed,
5995}
5996
5997pub struct EditorFocused(pub ViewHandle<Editor>);
5998pub struct EditorBlurred(pub ViewHandle<Editor>);
5999pub struct EditorReleased(pub WeakViewHandle<Editor>);
6000
6001impl Entity for Editor {
6002 type Event = Event;
6003
6004 fn release(&mut self, cx: &mut MutableAppContext) {
6005 cx.emit_global(EditorReleased(self.handle.clone()));
6006 }
6007}
6008
6009impl View for Editor {
6010 fn render(&mut self, cx: &mut RenderContext<Self>) -> ElementBox {
6011 let style = self.style(cx);
6012 self.display_map.update(cx, |map, cx| {
6013 map.set_font(style.text.font_id, style.text.font_size, cx)
6014 });
6015 EditorElement::new(self.handle.clone(), style.clone(), self.cursor_shape).boxed()
6016 }
6017
6018 fn ui_name() -> &'static str {
6019 "Editor"
6020 }
6021
6022 fn on_focus(&mut self, cx: &mut ViewContext<Self>) {
6023 let focused_event = EditorFocused(cx.handle());
6024 cx.emit_global(focused_event);
6025 if let Some(rename) = self.pending_rename.as_ref() {
6026 cx.focus(&rename.editor);
6027 } else {
6028 self.focused = true;
6029 self.blink_cursors(self.blink_epoch, cx);
6030 self.buffer.update(cx, |buffer, cx| {
6031 buffer.finalize_last_transaction(cx);
6032 if self.leader_replica_id.is_none() {
6033 buffer.set_active_selections(&self.selections, cx);
6034 }
6035 });
6036 }
6037 }
6038
6039 fn on_blur(&mut self, cx: &mut ViewContext<Self>) {
6040 let blurred_event = EditorBlurred(cx.handle());
6041 cx.emit_global(blurred_event);
6042 self.focused = false;
6043 self.buffer
6044 .update(cx, |buffer, cx| buffer.remove_active_selections(cx));
6045 self.hide_context_menu(cx);
6046 cx.emit(Event::Blurred);
6047 cx.notify();
6048 }
6049
6050 fn keymap_context(&self, _: &AppContext) -> gpui::keymap::Context {
6051 let mut context = Self::default_keymap_context();
6052 let mode = match self.mode {
6053 EditorMode::SingleLine => "single_line",
6054 EditorMode::AutoHeight { .. } => "auto_height",
6055 EditorMode::Full => "full",
6056 };
6057 context.map.insert("mode".into(), mode.into());
6058 if self.pending_rename.is_some() {
6059 context.set.insert("renaming".into());
6060 }
6061 match self.context_menu.as_ref() {
6062 Some(ContextMenu::Completions(_)) => {
6063 context.set.insert("showing_completions".into());
6064 }
6065 Some(ContextMenu::CodeActions(_)) => {
6066 context.set.insert("showing_code_actions".into());
6067 }
6068 None => {}
6069 }
6070
6071 for layer in self.keymap_context_layers.values() {
6072 context.extend(layer);
6073 }
6074
6075 context
6076 }
6077}
6078
6079fn build_style(
6080 settings: &Settings,
6081 get_field_editor_theme: Option<GetFieldEditorTheme>,
6082 override_text_style: Option<&OverrideTextStyle>,
6083 cx: &AppContext,
6084) -> EditorStyle {
6085 let font_cache = cx.font_cache();
6086
6087 let mut theme = settings.theme.editor.clone();
6088 let mut style = if let Some(get_field_editor_theme) = get_field_editor_theme {
6089 let field_editor_theme = get_field_editor_theme(&settings.theme);
6090 theme.text_color = field_editor_theme.text.color;
6091 theme.selection = field_editor_theme.selection;
6092 theme.background = field_editor_theme
6093 .container
6094 .background_color
6095 .unwrap_or_default();
6096 EditorStyle {
6097 text: field_editor_theme.text,
6098 placeholder_text: field_editor_theme.placeholder_text,
6099 theme,
6100 }
6101 } else {
6102 let font_family_id = settings.buffer_font_family;
6103 let font_family_name = cx.font_cache().family_name(font_family_id).unwrap();
6104 let font_properties = Default::default();
6105 let font_id = font_cache
6106 .select_font(font_family_id, &font_properties)
6107 .unwrap();
6108 let font_size = settings.buffer_font_size;
6109 EditorStyle {
6110 text: TextStyle {
6111 color: settings.theme.editor.text_color,
6112 font_family_name,
6113 font_family_id,
6114 font_id,
6115 font_size,
6116 font_properties,
6117 underline: Default::default(),
6118 },
6119 placeholder_text: None,
6120 theme,
6121 }
6122 };
6123
6124 if let Some(highlight_style) = override_text_style.and_then(|build_style| build_style(&style)) {
6125 if let Some(highlighted) = style
6126 .text
6127 .clone()
6128 .highlight(highlight_style, font_cache)
6129 .log_err()
6130 {
6131 style.text = highlighted;
6132 }
6133 }
6134
6135 style
6136}
6137
6138trait SelectionExt {
6139 fn offset_range(&self, buffer: &MultiBufferSnapshot) -> Range<usize>;
6140 fn point_range(&self, buffer: &MultiBufferSnapshot) -> Range<Point>;
6141 fn display_range(&self, map: &DisplaySnapshot) -> Range<DisplayPoint>;
6142 fn spanned_rows(&self, include_end_if_at_line_start: bool, map: &DisplaySnapshot)
6143 -> Range<u32>;
6144}
6145
6146impl<T: ToPoint + ToOffset> SelectionExt for Selection<T> {
6147 fn point_range(&self, buffer: &MultiBufferSnapshot) -> Range<Point> {
6148 let start = self.start.to_point(buffer);
6149 let end = self.end.to_point(buffer);
6150 if self.reversed {
6151 end..start
6152 } else {
6153 start..end
6154 }
6155 }
6156
6157 fn offset_range(&self, buffer: &MultiBufferSnapshot) -> Range<usize> {
6158 let start = self.start.to_offset(buffer);
6159 let end = self.end.to_offset(buffer);
6160 if self.reversed {
6161 end..start
6162 } else {
6163 start..end
6164 }
6165 }
6166
6167 fn display_range(&self, map: &DisplaySnapshot) -> Range<DisplayPoint> {
6168 let start = self
6169 .start
6170 .to_point(&map.buffer_snapshot)
6171 .to_display_point(map);
6172 let end = self
6173 .end
6174 .to_point(&map.buffer_snapshot)
6175 .to_display_point(map);
6176 if self.reversed {
6177 end..start
6178 } else {
6179 start..end
6180 }
6181 }
6182
6183 fn spanned_rows(
6184 &self,
6185 include_end_if_at_line_start: bool,
6186 map: &DisplaySnapshot,
6187 ) -> Range<u32> {
6188 let start = self.start.to_point(&map.buffer_snapshot);
6189 let mut end = self.end.to_point(&map.buffer_snapshot);
6190 if !include_end_if_at_line_start && start.row != end.row && end.column == 0 {
6191 end.row -= 1;
6192 }
6193
6194 let buffer_start = map.prev_line_boundary(start).0;
6195 let buffer_end = map.next_line_boundary(end).0;
6196 buffer_start.row..buffer_end.row + 1
6197 }
6198}
6199
6200impl<T: InvalidationRegion> InvalidationStack<T> {
6201 fn invalidate<S>(&mut self, selections: &[Selection<S>], buffer: &MultiBufferSnapshot)
6202 where
6203 S: Clone + ToOffset,
6204 {
6205 while let Some(region) = self.last() {
6206 let all_selections_inside_invalidation_ranges =
6207 if selections.len() == region.ranges().len() {
6208 selections
6209 .iter()
6210 .zip(region.ranges().iter().map(|r| r.to_offset(&buffer)))
6211 .all(|(selection, invalidation_range)| {
6212 let head = selection.head().to_offset(&buffer);
6213 invalidation_range.start <= head && invalidation_range.end >= head
6214 })
6215 } else {
6216 false
6217 };
6218
6219 if all_selections_inside_invalidation_ranges {
6220 break;
6221 } else {
6222 self.pop();
6223 }
6224 }
6225 }
6226}
6227
6228impl<T> Default for InvalidationStack<T> {
6229 fn default() -> Self {
6230 Self(Default::default())
6231 }
6232}
6233
6234impl<T> Deref for InvalidationStack<T> {
6235 type Target = Vec<T>;
6236
6237 fn deref(&self) -> &Self::Target {
6238 &self.0
6239 }
6240}
6241
6242impl<T> DerefMut for InvalidationStack<T> {
6243 fn deref_mut(&mut self) -> &mut Self::Target {
6244 &mut self.0
6245 }
6246}
6247
6248impl InvalidationRegion for BracketPairState {
6249 fn ranges(&self) -> &[Range<Anchor>] {
6250 &self.ranges
6251 }
6252}
6253
6254impl InvalidationRegion for SnippetState {
6255 fn ranges(&self) -> &[Range<Anchor>] {
6256 &self.ranges[self.active_index]
6257 }
6258}
6259
6260impl Deref for EditorStyle {
6261 type Target = theme::Editor;
6262
6263 fn deref(&self) -> &Self::Target {
6264 &self.theme
6265 }
6266}
6267
6268pub fn diagnostic_block_renderer(diagnostic: Diagnostic, is_valid: bool) -> RenderBlock {
6269 let mut highlighted_lines = Vec::new();
6270 for line in diagnostic.message.lines() {
6271 highlighted_lines.push(highlight_diagnostic_message(line));
6272 }
6273
6274 Arc::new(move |cx: &BlockContext| {
6275 let settings = cx.global::<Settings>();
6276 let theme = &settings.theme.editor;
6277 let style = diagnostic_style(diagnostic.severity, is_valid, theme);
6278 let font_size = (style.text_scale_factor * settings.buffer_font_size).round();
6279 Flex::column()
6280 .with_children(highlighted_lines.iter().map(|(line, highlights)| {
6281 Label::new(
6282 line.clone(),
6283 style.message.clone().with_font_size(font_size),
6284 )
6285 .with_highlights(highlights.clone())
6286 .contained()
6287 .with_margin_left(cx.anchor_x)
6288 .boxed()
6289 }))
6290 .aligned()
6291 .left()
6292 .boxed()
6293 })
6294}
6295
6296pub fn highlight_diagnostic_message(message: &str) -> (String, Vec<usize>) {
6297 let mut message_without_backticks = String::new();
6298 let mut prev_offset = 0;
6299 let mut inside_block = false;
6300 let mut highlights = Vec::new();
6301 for (match_ix, (offset, _)) in message
6302 .match_indices('`')
6303 .chain([(message.len(), "")])
6304 .enumerate()
6305 {
6306 message_without_backticks.push_str(&message[prev_offset..offset]);
6307 if inside_block {
6308 highlights.extend(prev_offset - match_ix..offset - match_ix);
6309 }
6310
6311 inside_block = !inside_block;
6312 prev_offset = offset + 1;
6313 }
6314
6315 (message_without_backticks, highlights)
6316}
6317
6318pub fn diagnostic_style(
6319 severity: DiagnosticSeverity,
6320 valid: bool,
6321 theme: &theme::Editor,
6322) -> DiagnosticStyle {
6323 match (severity, valid) {
6324 (DiagnosticSeverity::ERROR, true) => theme.error_diagnostic.clone(),
6325 (DiagnosticSeverity::ERROR, false) => theme.invalid_error_diagnostic.clone(),
6326 (DiagnosticSeverity::WARNING, true) => theme.warning_diagnostic.clone(),
6327 (DiagnosticSeverity::WARNING, false) => theme.invalid_warning_diagnostic.clone(),
6328 (DiagnosticSeverity::INFORMATION, true) => theme.information_diagnostic.clone(),
6329 (DiagnosticSeverity::INFORMATION, false) => theme.invalid_information_diagnostic.clone(),
6330 (DiagnosticSeverity::HINT, true) => theme.hint_diagnostic.clone(),
6331 (DiagnosticSeverity::HINT, false) => theme.invalid_hint_diagnostic.clone(),
6332 _ => theme.invalid_hint_diagnostic.clone(),
6333 }
6334}
6335
6336pub fn combine_syntax_and_fuzzy_match_highlights(
6337 text: &str,
6338 default_style: HighlightStyle,
6339 syntax_ranges: impl Iterator<Item = (Range<usize>, HighlightStyle)>,
6340 match_indices: &[usize],
6341) -> Vec<(Range<usize>, HighlightStyle)> {
6342 let mut result = Vec::new();
6343 let mut match_indices = match_indices.iter().copied().peekable();
6344
6345 for (range, mut syntax_highlight) in syntax_ranges.chain([(usize::MAX..0, Default::default())])
6346 {
6347 syntax_highlight.weight = None;
6348
6349 // Add highlights for any fuzzy match characters before the next
6350 // syntax highlight range.
6351 while let Some(&match_index) = match_indices.peek() {
6352 if match_index >= range.start {
6353 break;
6354 }
6355 match_indices.next();
6356 let end_index = char_ix_after(match_index, text);
6357 let mut match_style = default_style;
6358 match_style.weight = Some(fonts::Weight::BOLD);
6359 result.push((match_index..end_index, match_style));
6360 }
6361
6362 if range.start == usize::MAX {
6363 break;
6364 }
6365
6366 // Add highlights for any fuzzy match characters within the
6367 // syntax highlight range.
6368 let mut offset = range.start;
6369 while let Some(&match_index) = match_indices.peek() {
6370 if match_index >= range.end {
6371 break;
6372 }
6373
6374 match_indices.next();
6375 if match_index > offset {
6376 result.push((offset..match_index, syntax_highlight));
6377 }
6378
6379 let mut end_index = char_ix_after(match_index, text);
6380 while let Some(&next_match_index) = match_indices.peek() {
6381 if next_match_index == end_index && next_match_index < range.end {
6382 end_index = char_ix_after(next_match_index, text);
6383 match_indices.next();
6384 } else {
6385 break;
6386 }
6387 }
6388
6389 let mut match_style = syntax_highlight;
6390 match_style.weight = Some(fonts::Weight::BOLD);
6391 result.push((match_index..end_index, match_style));
6392 offset = end_index;
6393 }
6394
6395 if offset < range.end {
6396 result.push((offset..range.end, syntax_highlight));
6397 }
6398 }
6399
6400 fn char_ix_after(ix: usize, text: &str) -> usize {
6401 ix + text[ix..].chars().next().unwrap().len_utf8()
6402 }
6403
6404 result
6405}
6406
6407pub fn styled_runs_for_code_label<'a>(
6408 label: &'a CodeLabel,
6409 syntax_theme: &'a theme::SyntaxTheme,
6410) -> impl 'a + Iterator<Item = (Range<usize>, HighlightStyle)> {
6411 let fade_out = HighlightStyle {
6412 fade_out: Some(0.35),
6413 ..Default::default()
6414 };
6415
6416 let mut prev_end = label.filter_range.end;
6417 label
6418 .runs
6419 .iter()
6420 .enumerate()
6421 .flat_map(move |(ix, (range, highlight_id))| {
6422 let style = if let Some(style) = highlight_id.style(syntax_theme) {
6423 style
6424 } else {
6425 return Default::default();
6426 };
6427 let mut muted_style = style.clone();
6428 muted_style.highlight(fade_out);
6429
6430 let mut runs = SmallVec::<[(Range<usize>, HighlightStyle); 3]>::new();
6431 if range.start >= label.filter_range.end {
6432 if range.start > prev_end {
6433 runs.push((prev_end..range.start, fade_out));
6434 }
6435 runs.push((range.clone(), muted_style));
6436 } else if range.end <= label.filter_range.end {
6437 runs.push((range.clone(), style));
6438 } else {
6439 runs.push((range.start..label.filter_range.end, style));
6440 runs.push((label.filter_range.end..range.end, muted_style));
6441 }
6442 prev_end = cmp::max(prev_end, range.end);
6443
6444 if ix + 1 == label.runs.len() && label.text.len() > prev_end {
6445 runs.push((prev_end..label.text.len(), fade_out));
6446 }
6447
6448 runs
6449 })
6450}
6451
6452#[cfg(test)]
6453mod tests {
6454
6455 use super::*;
6456 use gpui::{
6457 geometry::rect::RectF,
6458 platform::{WindowBounds, WindowOptions},
6459 };
6460 use language::{LanguageConfig, LanguageServerConfig};
6461 use lsp::FakeLanguageServer;
6462 use project::FakeFs;
6463 use smol::stream::StreamExt;
6464 use std::{cell::RefCell, rc::Rc, time::Instant};
6465 use text::Point;
6466 use unindent::Unindent;
6467 use util::test::{marked_text_by, marked_text_ranges, sample_text};
6468 use workspace::{FollowableItem, ItemHandle};
6469
6470 #[gpui::test]
6471 fn test_edit_events(cx: &mut MutableAppContext) {
6472 populate_settings(cx);
6473 let buffer = cx.add_model(|cx| language::Buffer::new(0, "123456", cx));
6474
6475 let events = Rc::new(RefCell::new(Vec::new()));
6476 let (_, editor1) = cx.add_window(Default::default(), {
6477 let events = events.clone();
6478 |cx| {
6479 cx.subscribe(&cx.handle(), move |_, _, event, _| {
6480 if matches!(event, Event::Edited | Event::BufferEdited | Event::Dirtied) {
6481 events.borrow_mut().push(("editor1", *event));
6482 }
6483 })
6484 .detach();
6485 Editor::for_buffer(buffer.clone(), None, cx)
6486 }
6487 });
6488 let (_, editor2) = cx.add_window(Default::default(), {
6489 let events = events.clone();
6490 |cx| {
6491 cx.subscribe(&cx.handle(), move |_, _, event, _| {
6492 if matches!(event, Event::Edited | Event::BufferEdited | Event::Dirtied) {
6493 events.borrow_mut().push(("editor2", *event));
6494 }
6495 })
6496 .detach();
6497 Editor::for_buffer(buffer.clone(), None, cx)
6498 }
6499 });
6500 assert_eq!(mem::take(&mut *events.borrow_mut()), []);
6501
6502 // Mutating editor 1 will emit an `Edited` event only for that editor.
6503 editor1.update(cx, |editor, cx| editor.insert("X", cx));
6504 assert_eq!(
6505 mem::take(&mut *events.borrow_mut()),
6506 [
6507 ("editor1", Event::Edited),
6508 ("editor1", Event::BufferEdited),
6509 ("editor2", Event::BufferEdited),
6510 ("editor1", Event::Dirtied),
6511 ("editor2", Event::Dirtied)
6512 ]
6513 );
6514
6515 // Mutating editor 2 will emit an `Edited` event only for that editor.
6516 editor2.update(cx, |editor, cx| editor.delete(&Delete, cx));
6517 assert_eq!(
6518 mem::take(&mut *events.borrow_mut()),
6519 [
6520 ("editor2", Event::Edited),
6521 ("editor1", Event::BufferEdited),
6522 ("editor2", Event::BufferEdited),
6523 ]
6524 );
6525
6526 // Undoing on editor 1 will emit an `Edited` event only for that editor.
6527 editor1.update(cx, |editor, cx| editor.undo(&Undo, cx));
6528 assert_eq!(
6529 mem::take(&mut *events.borrow_mut()),
6530 [
6531 ("editor1", Event::Edited),
6532 ("editor1", Event::BufferEdited),
6533 ("editor2", Event::BufferEdited),
6534 ]
6535 );
6536
6537 // Redoing on editor 1 will emit an `Edited` event only for that editor.
6538 editor1.update(cx, |editor, cx| editor.redo(&Redo, cx));
6539 assert_eq!(
6540 mem::take(&mut *events.borrow_mut()),
6541 [
6542 ("editor1", Event::Edited),
6543 ("editor1", Event::BufferEdited),
6544 ("editor2", Event::BufferEdited),
6545 ]
6546 );
6547
6548 // Undoing on editor 2 will emit an `Edited` event only for that editor.
6549 editor2.update(cx, |editor, cx| editor.undo(&Undo, cx));
6550 assert_eq!(
6551 mem::take(&mut *events.borrow_mut()),
6552 [
6553 ("editor2", Event::Edited),
6554 ("editor1", Event::BufferEdited),
6555 ("editor2", Event::BufferEdited),
6556 ]
6557 );
6558
6559 // Redoing on editor 2 will emit an `Edited` event only for that editor.
6560 editor2.update(cx, |editor, cx| editor.redo(&Redo, cx));
6561 assert_eq!(
6562 mem::take(&mut *events.borrow_mut()),
6563 [
6564 ("editor2", Event::Edited),
6565 ("editor1", Event::BufferEdited),
6566 ("editor2", Event::BufferEdited),
6567 ]
6568 );
6569
6570 // No event is emitted when the mutation is a no-op.
6571 editor2.update(cx, |editor, cx| {
6572 editor.select_ranges([0..0], None, cx);
6573 editor.backspace(&Backspace, cx);
6574 });
6575 assert_eq!(mem::take(&mut *events.borrow_mut()), []);
6576 }
6577
6578 #[gpui::test]
6579 fn test_undo_redo_with_selection_restoration(cx: &mut MutableAppContext) {
6580 populate_settings(cx);
6581 let mut now = Instant::now();
6582 let buffer = cx.add_model(|cx| language::Buffer::new(0, "123456", cx));
6583 let group_interval = buffer.read(cx).transaction_group_interval();
6584 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
6585 let (_, editor) = cx.add_window(Default::default(), |cx| build_editor(buffer.clone(), cx));
6586
6587 editor.update(cx, |editor, cx| {
6588 editor.start_transaction_at(now, cx);
6589 editor.select_ranges([2..4], None, cx);
6590 editor.insert("cd", cx);
6591 editor.end_transaction_at(now, cx);
6592 assert_eq!(editor.text(cx), "12cd56");
6593 assert_eq!(editor.selected_ranges(cx), vec![4..4]);
6594
6595 editor.start_transaction_at(now, cx);
6596 editor.select_ranges([4..5], None, cx);
6597 editor.insert("e", cx);
6598 editor.end_transaction_at(now, cx);
6599 assert_eq!(editor.text(cx), "12cde6");
6600 assert_eq!(editor.selected_ranges(cx), vec![5..5]);
6601
6602 now += group_interval + Duration::from_millis(1);
6603 editor.select_ranges([2..2], None, cx);
6604
6605 // Simulate an edit in another editor
6606 buffer.update(cx, |buffer, cx| {
6607 buffer.start_transaction_at(now, cx);
6608 buffer.edit([0..1], "a", cx);
6609 buffer.edit([1..1], "b", cx);
6610 buffer.end_transaction_at(now, cx);
6611 });
6612
6613 assert_eq!(editor.text(cx), "ab2cde6");
6614 assert_eq!(editor.selected_ranges(cx), vec![3..3]);
6615
6616 // Last transaction happened past the group interval in a different editor.
6617 // Undo it individually and don't restore selections.
6618 editor.undo(&Undo, cx);
6619 assert_eq!(editor.text(cx), "12cde6");
6620 assert_eq!(editor.selected_ranges(cx), vec![2..2]);
6621
6622 // First two transactions happened within the group interval in this editor.
6623 // Undo them together and restore selections.
6624 editor.undo(&Undo, cx);
6625 editor.undo(&Undo, cx); // Undo stack is empty here, so this is a no-op.
6626 assert_eq!(editor.text(cx), "123456");
6627 assert_eq!(editor.selected_ranges(cx), vec![0..0]);
6628
6629 // Redo the first two transactions together.
6630 editor.redo(&Redo, cx);
6631 assert_eq!(editor.text(cx), "12cde6");
6632 assert_eq!(editor.selected_ranges(cx), vec![5..5]);
6633
6634 // Redo the last transaction on its own.
6635 editor.redo(&Redo, cx);
6636 assert_eq!(editor.text(cx), "ab2cde6");
6637 assert_eq!(editor.selected_ranges(cx), vec![6..6]);
6638
6639 // Test empty transactions.
6640 editor.start_transaction_at(now, cx);
6641 editor.end_transaction_at(now, cx);
6642 editor.undo(&Undo, cx);
6643 assert_eq!(editor.text(cx), "12cde6");
6644 });
6645 }
6646
6647 #[gpui::test]
6648 fn test_selection_with_mouse(cx: &mut gpui::MutableAppContext) {
6649 populate_settings(cx);
6650
6651 let buffer = MultiBuffer::build_simple("aaaaaa\nbbbbbb\ncccccc\nddddddd\n", cx);
6652 let (_, editor) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
6653 editor.update(cx, |view, cx| {
6654 view.begin_selection(DisplayPoint::new(2, 2), false, 1, cx);
6655 });
6656 assert_eq!(
6657 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
6658 [DisplayPoint::new(2, 2)..DisplayPoint::new(2, 2)]
6659 );
6660
6661 editor.update(cx, |view, cx| {
6662 view.update_selection(DisplayPoint::new(3, 3), 0, Vector2F::zero(), cx);
6663 });
6664
6665 assert_eq!(
6666 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
6667 [DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3)]
6668 );
6669
6670 editor.update(cx, |view, cx| {
6671 view.update_selection(DisplayPoint::new(1, 1), 0, Vector2F::zero(), cx);
6672 });
6673
6674 assert_eq!(
6675 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
6676 [DisplayPoint::new(2, 2)..DisplayPoint::new(1, 1)]
6677 );
6678
6679 editor.update(cx, |view, cx| {
6680 view.end_selection(cx);
6681 view.update_selection(DisplayPoint::new(3, 3), 0, Vector2F::zero(), cx);
6682 });
6683
6684 assert_eq!(
6685 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
6686 [DisplayPoint::new(2, 2)..DisplayPoint::new(1, 1)]
6687 );
6688
6689 editor.update(cx, |view, cx| {
6690 view.begin_selection(DisplayPoint::new(3, 3), true, 1, cx);
6691 view.update_selection(DisplayPoint::new(0, 0), 0, Vector2F::zero(), cx);
6692 });
6693
6694 assert_eq!(
6695 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
6696 [
6697 DisplayPoint::new(2, 2)..DisplayPoint::new(1, 1),
6698 DisplayPoint::new(3, 3)..DisplayPoint::new(0, 0)
6699 ]
6700 );
6701
6702 editor.update(cx, |view, cx| {
6703 view.end_selection(cx);
6704 });
6705
6706 assert_eq!(
6707 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
6708 [DisplayPoint::new(3, 3)..DisplayPoint::new(0, 0)]
6709 );
6710 }
6711
6712 #[gpui::test]
6713 fn test_canceling_pending_selection(cx: &mut gpui::MutableAppContext) {
6714 populate_settings(cx);
6715 let buffer = MultiBuffer::build_simple("aaaaaa\nbbbbbb\ncccccc\ndddddd\n", cx);
6716 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
6717
6718 view.update(cx, |view, cx| {
6719 view.begin_selection(DisplayPoint::new(2, 2), false, 1, cx);
6720 assert_eq!(
6721 view.selected_display_ranges(cx),
6722 [DisplayPoint::new(2, 2)..DisplayPoint::new(2, 2)]
6723 );
6724 });
6725
6726 view.update(cx, |view, cx| {
6727 view.update_selection(DisplayPoint::new(3, 3), 0, Vector2F::zero(), cx);
6728 assert_eq!(
6729 view.selected_display_ranges(cx),
6730 [DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3)]
6731 );
6732 });
6733
6734 view.update(cx, |view, cx| {
6735 view.cancel(&Cancel, cx);
6736 view.update_selection(DisplayPoint::new(1, 1), 0, Vector2F::zero(), cx);
6737 assert_eq!(
6738 view.selected_display_ranges(cx),
6739 [DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3)]
6740 );
6741 });
6742 }
6743
6744 #[gpui::test]
6745 fn test_navigation_history(cx: &mut gpui::MutableAppContext) {
6746 populate_settings(cx);
6747 use workspace::Item;
6748 let nav_history = Rc::new(RefCell::new(workspace::NavHistory::default()));
6749 let buffer = MultiBuffer::build_simple(&sample_text(30, 5, 'a'), cx);
6750
6751 cx.add_window(Default::default(), |cx| {
6752 let mut editor = build_editor(buffer.clone(), cx);
6753 editor.nav_history = Some(ItemNavHistory::new(nav_history.clone(), &cx.handle()));
6754
6755 // Move the cursor a small distance.
6756 // Nothing is added to the navigation history.
6757 editor.select_display_ranges(&[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)], cx);
6758 editor.select_display_ranges(&[DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0)], cx);
6759 assert!(nav_history.borrow_mut().pop_backward().is_none());
6760
6761 // Move the cursor a large distance.
6762 // The history can jump back to the previous position.
6763 editor.select_display_ranges(&[DisplayPoint::new(13, 0)..DisplayPoint::new(13, 3)], cx);
6764 let nav_entry = nav_history.borrow_mut().pop_backward().unwrap();
6765 editor.navigate(nav_entry.data.unwrap(), cx);
6766 assert_eq!(nav_entry.item.id(), cx.view_id());
6767 assert_eq!(
6768 editor.selected_display_ranges(cx),
6769 &[DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0)]
6770 );
6771 assert!(nav_history.borrow_mut().pop_backward().is_none());
6772
6773 // Move the cursor a small distance via the mouse.
6774 // Nothing is added to the navigation history.
6775 editor.begin_selection(DisplayPoint::new(5, 0), false, 1, cx);
6776 editor.end_selection(cx);
6777 assert_eq!(
6778 editor.selected_display_ranges(cx),
6779 &[DisplayPoint::new(5, 0)..DisplayPoint::new(5, 0)]
6780 );
6781 assert!(nav_history.borrow_mut().pop_backward().is_none());
6782
6783 // Move the cursor a large distance via the mouse.
6784 // The history can jump back to the previous position.
6785 editor.begin_selection(DisplayPoint::new(15, 0), false, 1, cx);
6786 editor.end_selection(cx);
6787 assert_eq!(
6788 editor.selected_display_ranges(cx),
6789 &[DisplayPoint::new(15, 0)..DisplayPoint::new(15, 0)]
6790 );
6791 let nav_entry = nav_history.borrow_mut().pop_backward().unwrap();
6792 editor.navigate(nav_entry.data.unwrap(), cx);
6793 assert_eq!(nav_entry.item.id(), cx.view_id());
6794 assert_eq!(
6795 editor.selected_display_ranges(cx),
6796 &[DisplayPoint::new(5, 0)..DisplayPoint::new(5, 0)]
6797 );
6798 assert!(nav_history.borrow_mut().pop_backward().is_none());
6799
6800 editor
6801 });
6802 }
6803
6804 #[gpui::test]
6805 fn test_cancel(cx: &mut gpui::MutableAppContext) {
6806 populate_settings(cx);
6807 let buffer = MultiBuffer::build_simple("aaaaaa\nbbbbbb\ncccccc\ndddddd\n", cx);
6808 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
6809
6810 view.update(cx, |view, cx| {
6811 view.begin_selection(DisplayPoint::new(3, 4), false, 1, cx);
6812 view.update_selection(DisplayPoint::new(1, 1), 0, Vector2F::zero(), cx);
6813 view.end_selection(cx);
6814
6815 view.begin_selection(DisplayPoint::new(0, 1), true, 1, cx);
6816 view.update_selection(DisplayPoint::new(0, 3), 0, Vector2F::zero(), cx);
6817 view.end_selection(cx);
6818 assert_eq!(
6819 view.selected_display_ranges(cx),
6820 [
6821 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
6822 DisplayPoint::new(3, 4)..DisplayPoint::new(1, 1),
6823 ]
6824 );
6825 });
6826
6827 view.update(cx, |view, cx| {
6828 view.cancel(&Cancel, cx);
6829 assert_eq!(
6830 view.selected_display_ranges(cx),
6831 [DisplayPoint::new(3, 4)..DisplayPoint::new(1, 1)]
6832 );
6833 });
6834
6835 view.update(cx, |view, cx| {
6836 view.cancel(&Cancel, cx);
6837 assert_eq!(
6838 view.selected_display_ranges(cx),
6839 [DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1)]
6840 );
6841 });
6842 }
6843
6844 #[gpui::test]
6845 fn test_fold(cx: &mut gpui::MutableAppContext) {
6846 populate_settings(cx);
6847 let buffer = MultiBuffer::build_simple(
6848 &"
6849 impl Foo {
6850 // Hello!
6851
6852 fn a() {
6853 1
6854 }
6855
6856 fn b() {
6857 2
6858 }
6859
6860 fn c() {
6861 3
6862 }
6863 }
6864 "
6865 .unindent(),
6866 cx,
6867 );
6868 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer.clone(), cx));
6869
6870 view.update(cx, |view, cx| {
6871 view.select_display_ranges(&[DisplayPoint::new(8, 0)..DisplayPoint::new(12, 0)], cx);
6872 view.fold(&Fold, cx);
6873 assert_eq!(
6874 view.display_text(cx),
6875 "
6876 impl Foo {
6877 // Hello!
6878
6879 fn a() {
6880 1
6881 }
6882
6883 fn b() {…
6884 }
6885
6886 fn c() {…
6887 }
6888 }
6889 "
6890 .unindent(),
6891 );
6892
6893 view.fold(&Fold, cx);
6894 assert_eq!(
6895 view.display_text(cx),
6896 "
6897 impl Foo {…
6898 }
6899 "
6900 .unindent(),
6901 );
6902
6903 view.unfold_lines(&UnfoldLines, cx);
6904 assert_eq!(
6905 view.display_text(cx),
6906 "
6907 impl Foo {
6908 // Hello!
6909
6910 fn a() {
6911 1
6912 }
6913
6914 fn b() {…
6915 }
6916
6917 fn c() {…
6918 }
6919 }
6920 "
6921 .unindent(),
6922 );
6923
6924 view.unfold_lines(&UnfoldLines, cx);
6925 assert_eq!(view.display_text(cx), buffer.read(cx).read(cx).text());
6926 });
6927 }
6928
6929 #[gpui::test]
6930 fn test_move_cursor(cx: &mut gpui::MutableAppContext) {
6931 populate_settings(cx);
6932 let buffer = MultiBuffer::build_simple(&sample_text(6, 6, 'a'), cx);
6933 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer.clone(), cx));
6934
6935 buffer.update(cx, |buffer, cx| {
6936 buffer.edit(
6937 vec![
6938 Point::new(1, 0)..Point::new(1, 0),
6939 Point::new(1, 1)..Point::new(1, 1),
6940 ],
6941 "\t",
6942 cx,
6943 );
6944 });
6945
6946 view.update(cx, |view, cx| {
6947 assert_eq!(
6948 view.selected_display_ranges(cx),
6949 &[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)]
6950 );
6951
6952 view.move_down(&MoveDown, cx);
6953 assert_eq!(
6954 view.selected_display_ranges(cx),
6955 &[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)]
6956 );
6957
6958 view.move_right(&MoveRight, cx);
6959 assert_eq!(
6960 view.selected_display_ranges(cx),
6961 &[DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4)]
6962 );
6963
6964 view.move_left(&MoveLeft, cx);
6965 assert_eq!(
6966 view.selected_display_ranges(cx),
6967 &[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)]
6968 );
6969
6970 view.move_up(&MoveUp, cx);
6971 assert_eq!(
6972 view.selected_display_ranges(cx),
6973 &[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)]
6974 );
6975
6976 view.move_to_end(&MoveToEnd, cx);
6977 assert_eq!(
6978 view.selected_display_ranges(cx),
6979 &[DisplayPoint::new(5, 6)..DisplayPoint::new(5, 6)]
6980 );
6981
6982 view.move_to_beginning(&MoveToBeginning, cx);
6983 assert_eq!(
6984 view.selected_display_ranges(cx),
6985 &[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)]
6986 );
6987
6988 view.select_display_ranges(&[DisplayPoint::new(0, 1)..DisplayPoint::new(0, 2)], cx);
6989 view.select_to_beginning(&SelectToBeginning, cx);
6990 assert_eq!(
6991 view.selected_display_ranges(cx),
6992 &[DisplayPoint::new(0, 1)..DisplayPoint::new(0, 0)]
6993 );
6994
6995 view.select_to_end(&SelectToEnd, cx);
6996 assert_eq!(
6997 view.selected_display_ranges(cx),
6998 &[DisplayPoint::new(0, 1)..DisplayPoint::new(5, 6)]
6999 );
7000 });
7001 }
7002
7003 #[gpui::test]
7004 fn test_move_cursor_multibyte(cx: &mut gpui::MutableAppContext) {
7005 populate_settings(cx);
7006 let buffer = MultiBuffer::build_simple("ⓐⓑⓒⓓⓔ\nabcde\nαβγδε\n", cx);
7007 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer.clone(), cx));
7008
7009 assert_eq!('ⓐ'.len_utf8(), 3);
7010 assert_eq!('α'.len_utf8(), 2);
7011
7012 view.update(cx, |view, cx| {
7013 view.fold_ranges(
7014 vec![
7015 Point::new(0, 6)..Point::new(0, 12),
7016 Point::new(1, 2)..Point::new(1, 4),
7017 Point::new(2, 4)..Point::new(2, 8),
7018 ],
7019 cx,
7020 );
7021 assert_eq!(view.display_text(cx), "ⓐⓑ…ⓔ\nab…e\nαβ…ε\n");
7022
7023 view.move_right(&MoveRight, cx);
7024 assert_eq!(
7025 view.selected_display_ranges(cx),
7026 &[empty_range(0, "ⓐ".len())]
7027 );
7028 view.move_right(&MoveRight, cx);
7029 assert_eq!(
7030 view.selected_display_ranges(cx),
7031 &[empty_range(0, "ⓐⓑ".len())]
7032 );
7033 view.move_right(&MoveRight, cx);
7034 assert_eq!(
7035 view.selected_display_ranges(cx),
7036 &[empty_range(0, "ⓐⓑ…".len())]
7037 );
7038
7039 view.move_down(&MoveDown, cx);
7040 assert_eq!(
7041 view.selected_display_ranges(cx),
7042 &[empty_range(1, "ab…".len())]
7043 );
7044 view.move_left(&MoveLeft, cx);
7045 assert_eq!(
7046 view.selected_display_ranges(cx),
7047 &[empty_range(1, "ab".len())]
7048 );
7049 view.move_left(&MoveLeft, cx);
7050 assert_eq!(
7051 view.selected_display_ranges(cx),
7052 &[empty_range(1, "a".len())]
7053 );
7054
7055 view.move_down(&MoveDown, cx);
7056 assert_eq!(
7057 view.selected_display_ranges(cx),
7058 &[empty_range(2, "α".len())]
7059 );
7060 view.move_right(&MoveRight, cx);
7061 assert_eq!(
7062 view.selected_display_ranges(cx),
7063 &[empty_range(2, "αβ".len())]
7064 );
7065 view.move_right(&MoveRight, cx);
7066 assert_eq!(
7067 view.selected_display_ranges(cx),
7068 &[empty_range(2, "αβ…".len())]
7069 );
7070 view.move_right(&MoveRight, cx);
7071 assert_eq!(
7072 view.selected_display_ranges(cx),
7073 &[empty_range(2, "αβ…ε".len())]
7074 );
7075
7076 view.move_up(&MoveUp, cx);
7077 assert_eq!(
7078 view.selected_display_ranges(cx),
7079 &[empty_range(1, "ab…e".len())]
7080 );
7081 view.move_up(&MoveUp, cx);
7082 assert_eq!(
7083 view.selected_display_ranges(cx),
7084 &[empty_range(0, "ⓐⓑ…ⓔ".len())]
7085 );
7086 view.move_left(&MoveLeft, cx);
7087 assert_eq!(
7088 view.selected_display_ranges(cx),
7089 &[empty_range(0, "ⓐⓑ…".len())]
7090 );
7091 view.move_left(&MoveLeft, cx);
7092 assert_eq!(
7093 view.selected_display_ranges(cx),
7094 &[empty_range(0, "ⓐⓑ".len())]
7095 );
7096 view.move_left(&MoveLeft, cx);
7097 assert_eq!(
7098 view.selected_display_ranges(cx),
7099 &[empty_range(0, "ⓐ".len())]
7100 );
7101 });
7102 }
7103
7104 #[gpui::test]
7105 fn test_move_cursor_different_line_lengths(cx: &mut gpui::MutableAppContext) {
7106 populate_settings(cx);
7107 let buffer = MultiBuffer::build_simple("ⓐⓑⓒⓓⓔ\nabcd\nαβγ\nabcd\nⓐⓑⓒⓓⓔ\n", cx);
7108 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer.clone(), cx));
7109 view.update(cx, |view, cx| {
7110 view.select_display_ranges(&[empty_range(0, "ⓐⓑⓒⓓⓔ".len())], cx);
7111 view.move_down(&MoveDown, cx);
7112 assert_eq!(
7113 view.selected_display_ranges(cx),
7114 &[empty_range(1, "abcd".len())]
7115 );
7116
7117 view.move_down(&MoveDown, cx);
7118 assert_eq!(
7119 view.selected_display_ranges(cx),
7120 &[empty_range(2, "αβγ".len())]
7121 );
7122
7123 view.move_down(&MoveDown, cx);
7124 assert_eq!(
7125 view.selected_display_ranges(cx),
7126 &[empty_range(3, "abcd".len())]
7127 );
7128
7129 view.move_down(&MoveDown, cx);
7130 assert_eq!(
7131 view.selected_display_ranges(cx),
7132 &[empty_range(4, "ⓐⓑⓒⓓⓔ".len())]
7133 );
7134
7135 view.move_up(&MoveUp, cx);
7136 assert_eq!(
7137 view.selected_display_ranges(cx),
7138 &[empty_range(3, "abcd".len())]
7139 );
7140
7141 view.move_up(&MoveUp, cx);
7142 assert_eq!(
7143 view.selected_display_ranges(cx),
7144 &[empty_range(2, "αβγ".len())]
7145 );
7146 });
7147 }
7148
7149 #[gpui::test]
7150 fn test_beginning_end_of_line(cx: &mut gpui::MutableAppContext) {
7151 populate_settings(cx);
7152 let buffer = MultiBuffer::build_simple("abc\n def", cx);
7153 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
7154 view.update(cx, |view, cx| {
7155 view.select_display_ranges(
7156 &[
7157 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
7158 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4),
7159 ],
7160 cx,
7161 );
7162 });
7163
7164 view.update(cx, |view, cx| {
7165 view.move_to_beginning_of_line(&MoveToBeginningOfLine, cx);
7166 assert_eq!(
7167 view.selected_display_ranges(cx),
7168 &[
7169 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
7170 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
7171 ]
7172 );
7173 });
7174
7175 view.update(cx, |view, cx| {
7176 view.move_to_beginning_of_line(&MoveToBeginningOfLine, cx);
7177 assert_eq!(
7178 view.selected_display_ranges(cx),
7179 &[
7180 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
7181 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
7182 ]
7183 );
7184 });
7185
7186 view.update(cx, |view, cx| {
7187 view.move_to_beginning_of_line(&MoveToBeginningOfLine, cx);
7188 assert_eq!(
7189 view.selected_display_ranges(cx),
7190 &[
7191 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
7192 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
7193 ]
7194 );
7195 });
7196
7197 view.update(cx, |view, cx| {
7198 view.move_to_end_of_line(&MoveToEndOfLine, cx);
7199 assert_eq!(
7200 view.selected_display_ranges(cx),
7201 &[
7202 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
7203 DisplayPoint::new(1, 5)..DisplayPoint::new(1, 5),
7204 ]
7205 );
7206 });
7207
7208 // Moving to the end of line again is a no-op.
7209 view.update(cx, |view, cx| {
7210 view.move_to_end_of_line(&MoveToEndOfLine, cx);
7211 assert_eq!(
7212 view.selected_display_ranges(cx),
7213 &[
7214 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
7215 DisplayPoint::new(1, 5)..DisplayPoint::new(1, 5),
7216 ]
7217 );
7218 });
7219
7220 view.update(cx, |view, cx| {
7221 view.move_left(&MoveLeft, cx);
7222 view.select_to_beginning_of_line(&SelectToBeginningOfLine(true), cx);
7223 assert_eq!(
7224 view.selected_display_ranges(cx),
7225 &[
7226 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 0),
7227 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 2),
7228 ]
7229 );
7230 });
7231
7232 view.update(cx, |view, cx| {
7233 view.select_to_beginning_of_line(&SelectToBeginningOfLine(true), cx);
7234 assert_eq!(
7235 view.selected_display_ranges(cx),
7236 &[
7237 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 0),
7238 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 0),
7239 ]
7240 );
7241 });
7242
7243 view.update(cx, |view, cx| {
7244 view.select_to_beginning_of_line(&SelectToBeginningOfLine(true), cx);
7245 assert_eq!(
7246 view.selected_display_ranges(cx),
7247 &[
7248 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 0),
7249 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 2),
7250 ]
7251 );
7252 });
7253
7254 view.update(cx, |view, cx| {
7255 view.select_to_end_of_line(&SelectToEndOfLine(true), cx);
7256 assert_eq!(
7257 view.selected_display_ranges(cx),
7258 &[
7259 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 3),
7260 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 5),
7261 ]
7262 );
7263 });
7264
7265 view.update(cx, |view, cx| {
7266 view.delete_to_end_of_line(&DeleteToEndOfLine, cx);
7267 assert_eq!(view.display_text(cx), "ab\n de");
7268 assert_eq!(
7269 view.selected_display_ranges(cx),
7270 &[
7271 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
7272 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4),
7273 ]
7274 );
7275 });
7276
7277 view.update(cx, |view, cx| {
7278 view.delete_to_beginning_of_line(&DeleteToBeginningOfLine, cx);
7279 assert_eq!(view.display_text(cx), "\n");
7280 assert_eq!(
7281 view.selected_display_ranges(cx),
7282 &[
7283 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
7284 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
7285 ]
7286 );
7287 });
7288 }
7289
7290 #[gpui::test]
7291 fn test_prev_next_word_boundary(cx: &mut gpui::MutableAppContext) {
7292 populate_settings(cx);
7293 let buffer = MultiBuffer::build_simple("use std::str::{foo, bar}\n\n {baz.qux()}", cx);
7294 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
7295 view.update(cx, |view, cx| {
7296 view.select_display_ranges(
7297 &[
7298 DisplayPoint::new(0, 11)..DisplayPoint::new(0, 11),
7299 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 4),
7300 ],
7301 cx,
7302 );
7303
7304 view.move_to_previous_word_start(&MoveToPreviousWordStart, cx);
7305 assert_selection_ranges(
7306 "use std::<>str::{foo, bar}\n\n {[]baz.qux()}",
7307 vec![('<', '>'), ('[', ']')],
7308 view,
7309 cx,
7310 );
7311
7312 view.move_to_previous_word_start(&MoveToPreviousWordStart, cx);
7313 assert_selection_ranges(
7314 "use std<>::str::{foo, bar}\n\n []{baz.qux()}",
7315 vec![('<', '>'), ('[', ']')],
7316 view,
7317 cx,
7318 );
7319
7320 view.move_to_previous_word_start(&MoveToPreviousWordStart, cx);
7321 assert_selection_ranges(
7322 "use <>std::str::{foo, bar}\n\n[] {baz.qux()}",
7323 vec![('<', '>'), ('[', ']')],
7324 view,
7325 cx,
7326 );
7327
7328 view.move_to_previous_word_start(&MoveToPreviousWordStart, cx);
7329 assert_selection_ranges(
7330 "<>use std::str::{foo, bar}\n[]\n {baz.qux()}",
7331 vec![('<', '>'), ('[', ']')],
7332 view,
7333 cx,
7334 );
7335
7336 view.move_to_previous_word_start(&MoveToPreviousWordStart, cx);
7337 assert_selection_ranges(
7338 "<>use std::str::{foo, bar[]}\n\n {baz.qux()}",
7339 vec![('<', '>'), ('[', ']')],
7340 view,
7341 cx,
7342 );
7343
7344 view.move_to_next_word_end(&MoveToNextWordEnd, cx);
7345 assert_selection_ranges(
7346 "use<> std::str::{foo, bar}[]\n\n {baz.qux()}",
7347 vec![('<', '>'), ('[', ']')],
7348 view,
7349 cx,
7350 );
7351
7352 view.move_to_next_word_end(&MoveToNextWordEnd, cx);
7353 assert_selection_ranges(
7354 "use std<>::str::{foo, bar}\n[]\n {baz.qux()}",
7355 vec![('<', '>'), ('[', ']')],
7356 view,
7357 cx,
7358 );
7359
7360 view.move_to_next_word_end(&MoveToNextWordEnd, cx);
7361 assert_selection_ranges(
7362 "use std::<>str::{foo, bar}\n\n {[]baz.qux()}",
7363 vec![('<', '>'), ('[', ']')],
7364 view,
7365 cx,
7366 );
7367
7368 view.move_right(&MoveRight, cx);
7369 view.select_to_previous_word_start(&SelectToPreviousWordStart, cx);
7370 assert_selection_ranges(
7371 "use std::>s<tr::{foo, bar}\n\n {]b[az.qux()}",
7372 vec![('<', '>'), ('[', ']')],
7373 view,
7374 cx,
7375 );
7376
7377 view.select_to_previous_word_start(&SelectToPreviousWordStart, cx);
7378 assert_selection_ranges(
7379 "use std>::s<tr::{foo, bar}\n\n ]{b[az.qux()}",
7380 vec![('<', '>'), ('[', ']')],
7381 view,
7382 cx,
7383 );
7384
7385 view.select_to_next_word_end(&SelectToNextWordEnd, cx);
7386 assert_selection_ranges(
7387 "use std::>s<tr::{foo, bar}\n\n {]b[az.qux()}",
7388 vec![('<', '>'), ('[', ']')],
7389 view,
7390 cx,
7391 );
7392 });
7393 }
7394
7395 #[gpui::test]
7396 fn test_prev_next_word_bounds_with_soft_wrap(cx: &mut gpui::MutableAppContext) {
7397 populate_settings(cx);
7398 let buffer = MultiBuffer::build_simple("use one::{\n two::three::four::five\n};", cx);
7399 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
7400
7401 view.update(cx, |view, cx| {
7402 view.set_wrap_width(Some(140.), cx);
7403 assert_eq!(
7404 view.display_text(cx),
7405 "use one::{\n two::three::\n four::five\n};"
7406 );
7407
7408 view.select_display_ranges(&[DisplayPoint::new(1, 7)..DisplayPoint::new(1, 7)], cx);
7409
7410 view.move_to_next_word_end(&MoveToNextWordEnd, cx);
7411 assert_eq!(
7412 view.selected_display_ranges(cx),
7413 &[DisplayPoint::new(1, 9)..DisplayPoint::new(1, 9)]
7414 );
7415
7416 view.move_to_next_word_end(&MoveToNextWordEnd, cx);
7417 assert_eq!(
7418 view.selected_display_ranges(cx),
7419 &[DisplayPoint::new(1, 14)..DisplayPoint::new(1, 14)]
7420 );
7421
7422 view.move_to_next_word_end(&MoveToNextWordEnd, cx);
7423 assert_eq!(
7424 view.selected_display_ranges(cx),
7425 &[DisplayPoint::new(2, 4)..DisplayPoint::new(2, 4)]
7426 );
7427
7428 view.move_to_next_word_end(&MoveToNextWordEnd, cx);
7429 assert_eq!(
7430 view.selected_display_ranges(cx),
7431 &[DisplayPoint::new(2, 8)..DisplayPoint::new(2, 8)]
7432 );
7433
7434 view.move_to_previous_word_start(&MoveToPreviousWordStart, cx);
7435 assert_eq!(
7436 view.selected_display_ranges(cx),
7437 &[DisplayPoint::new(2, 4)..DisplayPoint::new(2, 4)]
7438 );
7439
7440 view.move_to_previous_word_start(&MoveToPreviousWordStart, cx);
7441 assert_eq!(
7442 view.selected_display_ranges(cx),
7443 &[DisplayPoint::new(1, 14)..DisplayPoint::new(1, 14)]
7444 );
7445 });
7446 }
7447
7448 #[gpui::test]
7449 fn test_delete_to_word_boundary(cx: &mut gpui::MutableAppContext) {
7450 populate_settings(cx);
7451 let buffer = MultiBuffer::build_simple("one two three four", cx);
7452 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer.clone(), cx));
7453
7454 view.update(cx, |view, cx| {
7455 view.select_display_ranges(
7456 &[
7457 // an empty selection - the preceding word fragment is deleted
7458 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
7459 // characters selected - they are deleted
7460 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 12),
7461 ],
7462 cx,
7463 );
7464 view.delete_to_previous_word_start(&DeleteToPreviousWordStart, cx);
7465 });
7466
7467 assert_eq!(buffer.read(cx).read(cx).text(), "e two te four");
7468
7469 view.update(cx, |view, cx| {
7470 view.select_display_ranges(
7471 &[
7472 // an empty selection - the following word fragment is deleted
7473 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
7474 // characters selected - they are deleted
7475 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 10),
7476 ],
7477 cx,
7478 );
7479 view.delete_to_next_word_end(&DeleteToNextWordEnd, cx);
7480 });
7481
7482 assert_eq!(buffer.read(cx).read(cx).text(), "e t te our");
7483 }
7484
7485 #[gpui::test]
7486 fn test_newline(cx: &mut gpui::MutableAppContext) {
7487 populate_settings(cx);
7488 let buffer = MultiBuffer::build_simple("aaaa\n bbbb\n", cx);
7489 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer.clone(), cx));
7490
7491 view.update(cx, |view, cx| {
7492 view.select_display_ranges(
7493 &[
7494 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
7495 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
7496 DisplayPoint::new(1, 6)..DisplayPoint::new(1, 6),
7497 ],
7498 cx,
7499 );
7500
7501 view.newline(&Newline, cx);
7502 assert_eq!(view.text(cx), "aa\naa\n \n bb\n bb\n");
7503 });
7504 }
7505
7506 #[gpui::test]
7507 fn test_newline_with_old_selections(cx: &mut gpui::MutableAppContext) {
7508 populate_settings(cx);
7509 let buffer = MultiBuffer::build_simple(
7510 "
7511 a
7512 b(
7513 X
7514 )
7515 c(
7516 X
7517 )
7518 "
7519 .unindent()
7520 .as_str(),
7521 cx,
7522 );
7523
7524 let (_, editor) = cx.add_window(Default::default(), |cx| {
7525 let mut editor = build_editor(buffer.clone(), cx);
7526 editor.select_ranges(
7527 [
7528 Point::new(2, 4)..Point::new(2, 5),
7529 Point::new(5, 4)..Point::new(5, 5),
7530 ],
7531 None,
7532 cx,
7533 );
7534 editor
7535 });
7536
7537 // Edit the buffer directly, deleting ranges surrounding the editor's selections
7538 buffer.update(cx, |buffer, cx| {
7539 buffer.edit(
7540 [
7541 Point::new(1, 2)..Point::new(3, 0),
7542 Point::new(4, 2)..Point::new(6, 0),
7543 ],
7544 "",
7545 cx,
7546 );
7547 assert_eq!(
7548 buffer.read(cx).text(),
7549 "
7550 a
7551 b()
7552 c()
7553 "
7554 .unindent()
7555 );
7556 });
7557
7558 editor.update(cx, |editor, cx| {
7559 assert_eq!(
7560 editor.selected_ranges(cx),
7561 &[
7562 Point::new(1, 2)..Point::new(1, 2),
7563 Point::new(2, 2)..Point::new(2, 2),
7564 ],
7565 );
7566
7567 editor.newline(&Newline, cx);
7568 assert_eq!(
7569 editor.text(cx),
7570 "
7571 a
7572 b(
7573 )
7574 c(
7575 )
7576 "
7577 .unindent()
7578 );
7579
7580 // The selections are moved after the inserted newlines
7581 assert_eq!(
7582 editor.selected_ranges(cx),
7583 &[
7584 Point::new(2, 0)..Point::new(2, 0),
7585 Point::new(4, 0)..Point::new(4, 0),
7586 ],
7587 );
7588 });
7589 }
7590
7591 #[gpui::test]
7592 fn test_insert_with_old_selections(cx: &mut gpui::MutableAppContext) {
7593 populate_settings(cx);
7594 let buffer = MultiBuffer::build_simple("a( X ), b( Y ), c( Z )", cx);
7595 let (_, editor) = cx.add_window(Default::default(), |cx| {
7596 let mut editor = build_editor(buffer.clone(), cx);
7597 editor.select_ranges([3..4, 11..12, 19..20], None, cx);
7598 editor
7599 });
7600
7601 // Edit the buffer directly, deleting ranges surrounding the editor's selections
7602 buffer.update(cx, |buffer, cx| {
7603 buffer.edit([2..5, 10..13, 18..21], "", cx);
7604 assert_eq!(buffer.read(cx).text(), "a(), b(), c()".unindent());
7605 });
7606
7607 editor.update(cx, |editor, cx| {
7608 assert_eq!(editor.selected_ranges(cx), &[2..2, 7..7, 12..12],);
7609
7610 editor.insert("Z", cx);
7611 assert_eq!(editor.text(cx), "a(Z), b(Z), c(Z)");
7612
7613 // The selections are moved after the inserted characters
7614 assert_eq!(editor.selected_ranges(cx), &[3..3, 9..9, 15..15],);
7615 });
7616 }
7617
7618 #[gpui::test]
7619 fn test_indent_outdent(cx: &mut gpui::MutableAppContext) {
7620 populate_settings(cx);
7621 let buffer = MultiBuffer::build_simple(" one two\nthree\n four", cx);
7622 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer.clone(), cx));
7623
7624 view.update(cx, |view, cx| {
7625 // two selections on the same line
7626 view.select_display_ranges(
7627 &[
7628 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 5),
7629 DisplayPoint::new(0, 6)..DisplayPoint::new(0, 9),
7630 ],
7631 cx,
7632 );
7633
7634 // indent from mid-tabstop to full tabstop
7635 view.tab(&Tab(Direction::Next), cx);
7636 assert_eq!(view.text(cx), " one two\nthree\n four");
7637 assert_eq!(
7638 view.selected_display_ranges(cx),
7639 &[
7640 DisplayPoint::new(0, 4)..DisplayPoint::new(0, 7),
7641 DisplayPoint::new(0, 8)..DisplayPoint::new(0, 11),
7642 ]
7643 );
7644
7645 // outdent from 1 tabstop to 0 tabstops
7646 view.tab(&Tab(Direction::Prev), cx);
7647 assert_eq!(view.text(cx), "one two\nthree\n four");
7648 assert_eq!(
7649 view.selected_display_ranges(cx),
7650 &[
7651 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 3),
7652 DisplayPoint::new(0, 4)..DisplayPoint::new(0, 7),
7653 ]
7654 );
7655
7656 // select across line ending
7657 view.select_display_ranges(&[DisplayPoint::new(1, 1)..DisplayPoint::new(2, 0)], cx);
7658
7659 // indent and outdent affect only the preceding line
7660 view.tab(&Tab(Direction::Next), cx);
7661 assert_eq!(view.text(cx), "one two\n three\n four");
7662 assert_eq!(
7663 view.selected_display_ranges(cx),
7664 &[DisplayPoint::new(1, 5)..DisplayPoint::new(2, 0)]
7665 );
7666 view.tab(&Tab(Direction::Prev), cx);
7667 assert_eq!(view.text(cx), "one two\nthree\n four");
7668 assert_eq!(
7669 view.selected_display_ranges(cx),
7670 &[DisplayPoint::new(1, 1)..DisplayPoint::new(2, 0)]
7671 );
7672
7673 // Ensure that indenting/outdenting works when the cursor is at column 0.
7674 view.select_display_ranges(&[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)], cx);
7675 view.tab(&Tab(Direction::Next), cx);
7676 assert_eq!(view.text(cx), "one two\n three\n four");
7677 assert_eq!(
7678 view.selected_display_ranges(cx),
7679 &[DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4)]
7680 );
7681
7682 view.select_display_ranges(&[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)], cx);
7683 view.tab(&Tab(Direction::Prev), cx);
7684 assert_eq!(view.text(cx), "one two\nthree\n four");
7685 assert_eq!(
7686 view.selected_display_ranges(cx),
7687 &[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)]
7688 );
7689 });
7690 }
7691
7692 #[gpui::test]
7693 fn test_backspace(cx: &mut gpui::MutableAppContext) {
7694 populate_settings(cx);
7695 let (_, view) = cx.add_window(Default::default(), |cx| {
7696 build_editor(MultiBuffer::build_simple("", cx), cx)
7697 });
7698
7699 view.update(cx, |view, cx| {
7700 view.set_text("one two three\nfour five six\nseven eight nine\nten\n", cx);
7701 view.select_display_ranges(
7702 &[
7703 // an empty selection - the preceding character is deleted
7704 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
7705 // one character selected - it is deleted
7706 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
7707 // a line suffix selected - it is deleted
7708 DisplayPoint::new(2, 6)..DisplayPoint::new(3, 0),
7709 ],
7710 cx,
7711 );
7712 view.backspace(&Backspace, cx);
7713 assert_eq!(view.text(cx), "oe two three\nfou five six\nseven ten\n");
7714
7715 view.set_text(" one\n two\n three\n four", cx);
7716 view.select_display_ranges(
7717 &[
7718 // cursors at the the end of leading indent - last indent is deleted
7719 DisplayPoint::new(0, 4)..DisplayPoint::new(0, 4),
7720 DisplayPoint::new(1, 8)..DisplayPoint::new(1, 8),
7721 // cursors inside leading indent - overlapping indent deletions are coalesced
7722 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 4),
7723 DisplayPoint::new(2, 5)..DisplayPoint::new(2, 5),
7724 DisplayPoint::new(2, 6)..DisplayPoint::new(2, 6),
7725 // cursor at the beginning of a line - preceding newline is deleted
7726 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
7727 // selection inside leading indent - only the selected character is deleted
7728 DisplayPoint::new(3, 2)..DisplayPoint::new(3, 3),
7729 ],
7730 cx,
7731 );
7732 view.backspace(&Backspace, cx);
7733 assert_eq!(view.text(cx), "one\n two\n three four");
7734 });
7735 }
7736
7737 #[gpui::test]
7738 fn test_delete(cx: &mut gpui::MutableAppContext) {
7739 populate_settings(cx);
7740 let buffer =
7741 MultiBuffer::build_simple("one two three\nfour five six\nseven eight nine\nten\n", cx);
7742 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer.clone(), cx));
7743
7744 view.update(cx, |view, cx| {
7745 view.select_display_ranges(
7746 &[
7747 // an empty selection - the following character is deleted
7748 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
7749 // one character selected - it is deleted
7750 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
7751 // a line suffix selected - it is deleted
7752 DisplayPoint::new(2, 6)..DisplayPoint::new(3, 0),
7753 ],
7754 cx,
7755 );
7756 view.delete(&Delete, cx);
7757 });
7758
7759 assert_eq!(
7760 buffer.read(cx).read(cx).text(),
7761 "on two three\nfou five six\nseven ten\n"
7762 );
7763 }
7764
7765 #[gpui::test]
7766 fn test_delete_line(cx: &mut gpui::MutableAppContext) {
7767 populate_settings(cx);
7768 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
7769 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
7770 view.update(cx, |view, cx| {
7771 view.select_display_ranges(
7772 &[
7773 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
7774 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 1),
7775 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
7776 ],
7777 cx,
7778 );
7779 view.delete_line(&DeleteLine, cx);
7780 assert_eq!(view.display_text(cx), "ghi");
7781 assert_eq!(
7782 view.selected_display_ranges(cx),
7783 vec![
7784 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
7785 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1)
7786 ]
7787 );
7788 });
7789
7790 populate_settings(cx);
7791 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
7792 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
7793 view.update(cx, |view, cx| {
7794 view.select_display_ranges(&[DisplayPoint::new(2, 0)..DisplayPoint::new(0, 1)], cx);
7795 view.delete_line(&DeleteLine, cx);
7796 assert_eq!(view.display_text(cx), "ghi\n");
7797 assert_eq!(
7798 view.selected_display_ranges(cx),
7799 vec![DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1)]
7800 );
7801 });
7802 }
7803
7804 #[gpui::test]
7805 fn test_duplicate_line(cx: &mut gpui::MutableAppContext) {
7806 populate_settings(cx);
7807 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
7808 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
7809 view.update(cx, |view, cx| {
7810 view.select_display_ranges(
7811 &[
7812 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
7813 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
7814 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
7815 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
7816 ],
7817 cx,
7818 );
7819 view.duplicate_line(&DuplicateLine, cx);
7820 assert_eq!(view.display_text(cx), "abc\nabc\ndef\ndef\nghi\n\n");
7821 assert_eq!(
7822 view.selected_display_ranges(cx),
7823 vec![
7824 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 1),
7825 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
7826 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
7827 DisplayPoint::new(6, 0)..DisplayPoint::new(6, 0),
7828 ]
7829 );
7830 });
7831
7832 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
7833 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
7834 view.update(cx, |view, cx| {
7835 view.select_display_ranges(
7836 &[
7837 DisplayPoint::new(0, 1)..DisplayPoint::new(1, 1),
7838 DisplayPoint::new(1, 2)..DisplayPoint::new(2, 1),
7839 ],
7840 cx,
7841 );
7842 view.duplicate_line(&DuplicateLine, cx);
7843 assert_eq!(view.display_text(cx), "abc\ndef\nghi\nabc\ndef\nghi\n");
7844 assert_eq!(
7845 view.selected_display_ranges(cx),
7846 vec![
7847 DisplayPoint::new(3, 1)..DisplayPoint::new(4, 1),
7848 DisplayPoint::new(4, 2)..DisplayPoint::new(5, 1),
7849 ]
7850 );
7851 });
7852 }
7853
7854 #[gpui::test]
7855 fn test_move_line_up_down(cx: &mut gpui::MutableAppContext) {
7856 populate_settings(cx);
7857 let buffer = MultiBuffer::build_simple(&sample_text(10, 5, 'a'), cx);
7858 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
7859 view.update(cx, |view, cx| {
7860 view.fold_ranges(
7861 vec![
7862 Point::new(0, 2)..Point::new(1, 2),
7863 Point::new(2, 3)..Point::new(4, 1),
7864 Point::new(7, 0)..Point::new(8, 4),
7865 ],
7866 cx,
7867 );
7868 view.select_display_ranges(
7869 &[
7870 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
7871 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 1),
7872 DisplayPoint::new(3, 2)..DisplayPoint::new(4, 3),
7873 DisplayPoint::new(5, 0)..DisplayPoint::new(5, 2),
7874 ],
7875 cx,
7876 );
7877 assert_eq!(
7878 view.display_text(cx),
7879 "aa…bbb\nccc…eeee\nfffff\nggggg\n…i\njjjjj"
7880 );
7881
7882 view.move_line_up(&MoveLineUp, cx);
7883 assert_eq!(
7884 view.display_text(cx),
7885 "aa…bbb\nccc…eeee\nggggg\n…i\njjjjj\nfffff"
7886 );
7887 assert_eq!(
7888 view.selected_display_ranges(cx),
7889 vec![
7890 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
7891 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
7892 DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3),
7893 DisplayPoint::new(4, 0)..DisplayPoint::new(4, 2)
7894 ]
7895 );
7896 });
7897
7898 view.update(cx, |view, cx| {
7899 view.move_line_down(&MoveLineDown, cx);
7900 assert_eq!(
7901 view.display_text(cx),
7902 "ccc…eeee\naa…bbb\nfffff\nggggg\n…i\njjjjj"
7903 );
7904 assert_eq!(
7905 view.selected_display_ranges(cx),
7906 vec![
7907 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
7908 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 1),
7909 DisplayPoint::new(3, 2)..DisplayPoint::new(4, 3),
7910 DisplayPoint::new(5, 0)..DisplayPoint::new(5, 2)
7911 ]
7912 );
7913 });
7914
7915 view.update(cx, |view, cx| {
7916 view.move_line_down(&MoveLineDown, cx);
7917 assert_eq!(
7918 view.display_text(cx),
7919 "ccc…eeee\nfffff\naa…bbb\nggggg\n…i\njjjjj"
7920 );
7921 assert_eq!(
7922 view.selected_display_ranges(cx),
7923 vec![
7924 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
7925 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 1),
7926 DisplayPoint::new(3, 2)..DisplayPoint::new(4, 3),
7927 DisplayPoint::new(5, 0)..DisplayPoint::new(5, 2)
7928 ]
7929 );
7930 });
7931
7932 view.update(cx, |view, cx| {
7933 view.move_line_up(&MoveLineUp, cx);
7934 assert_eq!(
7935 view.display_text(cx),
7936 "ccc…eeee\naa…bbb\nggggg\n…i\njjjjj\nfffff"
7937 );
7938 assert_eq!(
7939 view.selected_display_ranges(cx),
7940 vec![
7941 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
7942 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
7943 DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3),
7944 DisplayPoint::new(4, 0)..DisplayPoint::new(4, 2)
7945 ]
7946 );
7947 });
7948 }
7949
7950 #[gpui::test]
7951 fn test_move_line_up_down_with_blocks(cx: &mut gpui::MutableAppContext) {
7952 populate_settings(cx);
7953 let buffer = MultiBuffer::build_simple(&sample_text(10, 5, 'a'), cx);
7954 let snapshot = buffer.read(cx).snapshot(cx);
7955 let (_, editor) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
7956 editor.update(cx, |editor, cx| {
7957 editor.insert_blocks(
7958 [BlockProperties {
7959 position: snapshot.anchor_after(Point::new(2, 0)),
7960 disposition: BlockDisposition::Below,
7961 height: 1,
7962 render: Arc::new(|_| Empty::new().boxed()),
7963 }],
7964 cx,
7965 );
7966 editor.select_ranges([Point::new(2, 0)..Point::new(2, 0)], None, cx);
7967 editor.move_line_down(&MoveLineDown, cx);
7968 });
7969 }
7970
7971 #[gpui::test]
7972 fn test_clipboard(cx: &mut gpui::MutableAppContext) {
7973 populate_settings(cx);
7974 let buffer = MultiBuffer::build_simple("one✅ two three four five six ", cx);
7975 let view = cx
7976 .add_window(Default::default(), |cx| build_editor(buffer.clone(), cx))
7977 .1;
7978
7979 // Cut with three selections. Clipboard text is divided into three slices.
7980 view.update(cx, |view, cx| {
7981 view.select_ranges(vec![0..7, 11..17, 22..27], None, cx);
7982 view.cut(&Cut, cx);
7983 assert_eq!(view.display_text(cx), "two four six ");
7984 });
7985
7986 // Paste with three cursors. Each cursor pastes one slice of the clipboard text.
7987 view.update(cx, |view, cx| {
7988 view.select_ranges(vec![4..4, 9..9, 13..13], None, cx);
7989 view.paste(&Paste, cx);
7990 assert_eq!(view.display_text(cx), "two one✅ four three six five ");
7991 assert_eq!(
7992 view.selected_display_ranges(cx),
7993 &[
7994 DisplayPoint::new(0, 11)..DisplayPoint::new(0, 11),
7995 DisplayPoint::new(0, 22)..DisplayPoint::new(0, 22),
7996 DisplayPoint::new(0, 31)..DisplayPoint::new(0, 31)
7997 ]
7998 );
7999 });
8000
8001 // Paste again but with only two cursors. Since the number of cursors doesn't
8002 // match the number of slices in the clipboard, the entire clipboard text
8003 // is pasted at each cursor.
8004 view.update(cx, |view, cx| {
8005 view.select_ranges(vec![0..0, 31..31], None, cx);
8006 view.handle_input(&Input("( ".into()), cx);
8007 view.paste(&Paste, cx);
8008 view.handle_input(&Input(") ".into()), cx);
8009 assert_eq!(
8010 view.display_text(cx),
8011 "( one✅ three five ) two one✅ four three six five ( one✅ three five ) "
8012 );
8013 });
8014
8015 view.update(cx, |view, cx| {
8016 view.select_ranges(vec![0..0], None, cx);
8017 view.handle_input(&Input("123\n4567\n89\n".into()), cx);
8018 assert_eq!(
8019 view.display_text(cx),
8020 "123\n4567\n89\n( one✅ three five ) two one✅ four three six five ( one✅ three five ) "
8021 );
8022 });
8023
8024 // Cut with three selections, one of which is full-line.
8025 view.update(cx, |view, cx| {
8026 view.select_display_ranges(
8027 &[
8028 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 2),
8029 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
8030 DisplayPoint::new(2, 0)..DisplayPoint::new(2, 1),
8031 ],
8032 cx,
8033 );
8034 view.cut(&Cut, cx);
8035 assert_eq!(
8036 view.display_text(cx),
8037 "13\n9\n( one✅ three five ) two one✅ four three six five ( one✅ three five ) "
8038 );
8039 });
8040
8041 // Paste with three selections, noticing how the copied selection that was full-line
8042 // gets inserted before the second cursor.
8043 view.update(cx, |view, cx| {
8044 view.select_display_ranges(
8045 &[
8046 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
8047 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
8048 DisplayPoint::new(2, 2)..DisplayPoint::new(2, 3),
8049 ],
8050 cx,
8051 );
8052 view.paste(&Paste, cx);
8053 assert_eq!(
8054 view.display_text(cx),
8055 "123\n4567\n9\n( 8ne✅ three five ) two one✅ four three six five ( one✅ three five ) "
8056 );
8057 assert_eq!(
8058 view.selected_display_ranges(cx),
8059 &[
8060 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
8061 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
8062 DisplayPoint::new(3, 3)..DisplayPoint::new(3, 3),
8063 ]
8064 );
8065 });
8066
8067 // Copy with a single cursor only, which writes the whole line into the clipboard.
8068 view.update(cx, |view, cx| {
8069 view.select_display_ranges(&[DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1)], cx);
8070 view.copy(&Copy, cx);
8071 });
8072
8073 // Paste with three selections, noticing how the copied full-line selection is inserted
8074 // before the empty selections but replaces the selection that is non-empty.
8075 view.update(cx, |view, cx| {
8076 view.select_display_ranges(
8077 &[
8078 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
8079 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 2),
8080 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
8081 ],
8082 cx,
8083 );
8084 view.paste(&Paste, cx);
8085 assert_eq!(
8086 view.display_text(cx),
8087 "123\n123\n123\n67\n123\n9\n( 8ne✅ three five ) two one✅ four three six five ( one✅ three five ) "
8088 );
8089 assert_eq!(
8090 view.selected_display_ranges(cx),
8091 &[
8092 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
8093 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
8094 DisplayPoint::new(5, 1)..DisplayPoint::new(5, 1),
8095 ]
8096 );
8097 });
8098 }
8099
8100 #[gpui::test]
8101 fn test_select_all(cx: &mut gpui::MutableAppContext) {
8102 populate_settings(cx);
8103 let buffer = MultiBuffer::build_simple("abc\nde\nfgh", cx);
8104 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
8105 view.update(cx, |view, cx| {
8106 view.select_all(&SelectAll, cx);
8107 assert_eq!(
8108 view.selected_display_ranges(cx),
8109 &[DisplayPoint::new(0, 0)..DisplayPoint::new(2, 3)]
8110 );
8111 });
8112 }
8113
8114 #[gpui::test]
8115 fn test_select_line(cx: &mut gpui::MutableAppContext) {
8116 populate_settings(cx);
8117 let buffer = MultiBuffer::build_simple(&sample_text(6, 5, 'a'), cx);
8118 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
8119 view.update(cx, |view, cx| {
8120 view.select_display_ranges(
8121 &[
8122 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
8123 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
8124 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
8125 DisplayPoint::new(4, 2)..DisplayPoint::new(4, 2),
8126 ],
8127 cx,
8128 );
8129 view.select_line(&SelectLine, cx);
8130 assert_eq!(
8131 view.selected_display_ranges(cx),
8132 vec![
8133 DisplayPoint::new(0, 0)..DisplayPoint::new(2, 0),
8134 DisplayPoint::new(4, 0)..DisplayPoint::new(5, 0),
8135 ]
8136 );
8137 });
8138
8139 view.update(cx, |view, cx| {
8140 view.select_line(&SelectLine, cx);
8141 assert_eq!(
8142 view.selected_display_ranges(cx),
8143 vec![
8144 DisplayPoint::new(0, 0)..DisplayPoint::new(3, 0),
8145 DisplayPoint::new(4, 0)..DisplayPoint::new(5, 5),
8146 ]
8147 );
8148 });
8149
8150 view.update(cx, |view, cx| {
8151 view.select_line(&SelectLine, cx);
8152 assert_eq!(
8153 view.selected_display_ranges(cx),
8154 vec![DisplayPoint::new(0, 0)..DisplayPoint::new(5, 5)]
8155 );
8156 });
8157 }
8158
8159 #[gpui::test]
8160 fn test_split_selection_into_lines(cx: &mut gpui::MutableAppContext) {
8161 populate_settings(cx);
8162 let buffer = MultiBuffer::build_simple(&sample_text(9, 5, 'a'), cx);
8163 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
8164 view.update(cx, |view, cx| {
8165 view.fold_ranges(
8166 vec![
8167 Point::new(0, 2)..Point::new(1, 2),
8168 Point::new(2, 3)..Point::new(4, 1),
8169 Point::new(7, 0)..Point::new(8, 4),
8170 ],
8171 cx,
8172 );
8173 view.select_display_ranges(
8174 &[
8175 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
8176 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
8177 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
8178 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 4),
8179 ],
8180 cx,
8181 );
8182 assert_eq!(view.display_text(cx), "aa…bbb\nccc…eeee\nfffff\nggggg\n…i");
8183 });
8184
8185 view.update(cx, |view, cx| {
8186 view.split_selection_into_lines(&SplitSelectionIntoLines, cx);
8187 assert_eq!(
8188 view.display_text(cx),
8189 "aaaaa\nbbbbb\nccc…eeee\nfffff\nggggg\n…i"
8190 );
8191 assert_eq!(
8192 view.selected_display_ranges(cx),
8193 [
8194 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
8195 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
8196 DisplayPoint::new(2, 0)..DisplayPoint::new(2, 0),
8197 DisplayPoint::new(5, 4)..DisplayPoint::new(5, 4)
8198 ]
8199 );
8200 });
8201
8202 view.update(cx, |view, cx| {
8203 view.select_display_ranges(&[DisplayPoint::new(5, 0)..DisplayPoint::new(0, 1)], cx);
8204 view.split_selection_into_lines(&SplitSelectionIntoLines, cx);
8205 assert_eq!(
8206 view.display_text(cx),
8207 "aaaaa\nbbbbb\nccccc\nddddd\neeeee\nfffff\nggggg\nhhhhh\niiiii"
8208 );
8209 assert_eq!(
8210 view.selected_display_ranges(cx),
8211 [
8212 DisplayPoint::new(0, 5)..DisplayPoint::new(0, 5),
8213 DisplayPoint::new(1, 5)..DisplayPoint::new(1, 5),
8214 DisplayPoint::new(2, 5)..DisplayPoint::new(2, 5),
8215 DisplayPoint::new(3, 5)..DisplayPoint::new(3, 5),
8216 DisplayPoint::new(4, 5)..DisplayPoint::new(4, 5),
8217 DisplayPoint::new(5, 5)..DisplayPoint::new(5, 5),
8218 DisplayPoint::new(6, 5)..DisplayPoint::new(6, 5),
8219 DisplayPoint::new(7, 0)..DisplayPoint::new(7, 0)
8220 ]
8221 );
8222 });
8223 }
8224
8225 #[gpui::test]
8226 fn test_add_selection_above_below(cx: &mut gpui::MutableAppContext) {
8227 populate_settings(cx);
8228 let buffer = MultiBuffer::build_simple("abc\ndefghi\n\njk\nlmno\n", cx);
8229 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
8230
8231 view.update(cx, |view, cx| {
8232 view.select_display_ranges(&[DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)], cx);
8233 });
8234 view.update(cx, |view, cx| {
8235 view.add_selection_above(&AddSelectionAbove, cx);
8236 assert_eq!(
8237 view.selected_display_ranges(cx),
8238 vec![
8239 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
8240 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)
8241 ]
8242 );
8243 });
8244
8245 view.update(cx, |view, cx| {
8246 view.add_selection_above(&AddSelectionAbove, cx);
8247 assert_eq!(
8248 view.selected_display_ranges(cx),
8249 vec![
8250 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
8251 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)
8252 ]
8253 );
8254 });
8255
8256 view.update(cx, |view, cx| {
8257 view.add_selection_below(&AddSelectionBelow, cx);
8258 assert_eq!(
8259 view.selected_display_ranges(cx),
8260 vec![DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)]
8261 );
8262
8263 view.undo_selection(&UndoSelection, cx);
8264 assert_eq!(
8265 view.selected_display_ranges(cx),
8266 vec![
8267 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
8268 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)
8269 ]
8270 );
8271
8272 view.redo_selection(&RedoSelection, cx);
8273 assert_eq!(
8274 view.selected_display_ranges(cx),
8275 vec![DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)]
8276 );
8277 });
8278
8279 view.update(cx, |view, cx| {
8280 view.add_selection_below(&AddSelectionBelow, cx);
8281 assert_eq!(
8282 view.selected_display_ranges(cx),
8283 vec![
8284 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3),
8285 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 3)
8286 ]
8287 );
8288 });
8289
8290 view.update(cx, |view, cx| {
8291 view.add_selection_below(&AddSelectionBelow, cx);
8292 assert_eq!(
8293 view.selected_display_ranges(cx),
8294 vec![
8295 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3),
8296 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 3)
8297 ]
8298 );
8299 });
8300
8301 view.update(cx, |view, cx| {
8302 view.select_display_ranges(&[DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3)], cx);
8303 });
8304 view.update(cx, |view, cx| {
8305 view.add_selection_below(&AddSelectionBelow, cx);
8306 assert_eq!(
8307 view.selected_display_ranges(cx),
8308 vec![
8309 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
8310 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 3)
8311 ]
8312 );
8313 });
8314
8315 view.update(cx, |view, cx| {
8316 view.add_selection_below(&AddSelectionBelow, cx);
8317 assert_eq!(
8318 view.selected_display_ranges(cx),
8319 vec![
8320 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
8321 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 3)
8322 ]
8323 );
8324 });
8325
8326 view.update(cx, |view, cx| {
8327 view.add_selection_above(&AddSelectionAbove, cx);
8328 assert_eq!(
8329 view.selected_display_ranges(cx),
8330 vec![DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3)]
8331 );
8332 });
8333
8334 view.update(cx, |view, cx| {
8335 view.add_selection_above(&AddSelectionAbove, cx);
8336 assert_eq!(
8337 view.selected_display_ranges(cx),
8338 vec![DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3)]
8339 );
8340 });
8341
8342 view.update(cx, |view, cx| {
8343 view.select_display_ranges(&[DisplayPoint::new(0, 1)..DisplayPoint::new(1, 4)], cx);
8344 view.add_selection_below(&AddSelectionBelow, cx);
8345 assert_eq!(
8346 view.selected_display_ranges(cx),
8347 vec![
8348 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
8349 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 4),
8350 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 2),
8351 ]
8352 );
8353 });
8354
8355 view.update(cx, |view, cx| {
8356 view.add_selection_below(&AddSelectionBelow, cx);
8357 assert_eq!(
8358 view.selected_display_ranges(cx),
8359 vec![
8360 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
8361 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 4),
8362 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 2),
8363 DisplayPoint::new(4, 1)..DisplayPoint::new(4, 4),
8364 ]
8365 );
8366 });
8367
8368 view.update(cx, |view, cx| {
8369 view.add_selection_above(&AddSelectionAbove, cx);
8370 assert_eq!(
8371 view.selected_display_ranges(cx),
8372 vec![
8373 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
8374 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 4),
8375 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 2),
8376 ]
8377 );
8378 });
8379
8380 view.update(cx, |view, cx| {
8381 view.select_display_ranges(&[DisplayPoint::new(4, 3)..DisplayPoint::new(1, 1)], cx);
8382 });
8383 view.update(cx, |view, cx| {
8384 view.add_selection_above(&AddSelectionAbove, cx);
8385 assert_eq!(
8386 view.selected_display_ranges(cx),
8387 vec![
8388 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 1),
8389 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 1),
8390 DisplayPoint::new(3, 2)..DisplayPoint::new(3, 1),
8391 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 1),
8392 ]
8393 );
8394 });
8395
8396 view.update(cx, |view, cx| {
8397 view.add_selection_below(&AddSelectionBelow, cx);
8398 assert_eq!(
8399 view.selected_display_ranges(cx),
8400 vec![
8401 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 1),
8402 DisplayPoint::new(3, 2)..DisplayPoint::new(3, 1),
8403 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 1),
8404 ]
8405 );
8406 });
8407 }
8408
8409 #[gpui::test]
8410 fn test_select_next(cx: &mut gpui::MutableAppContext) {
8411 populate_settings(cx);
8412
8413 let (text, ranges) = marked_text_ranges("[abc]\n[abc] [abc]\ndefabc\n[abc]");
8414 let buffer = MultiBuffer::build_simple(&text, cx);
8415 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, cx));
8416
8417 view.update(cx, |view, cx| {
8418 view.select_ranges([ranges[1].start + 1..ranges[1].start + 1], None, cx);
8419 view.select_next(&SelectNext(false), cx);
8420 assert_eq!(view.selected_ranges(cx), &ranges[1..2]);
8421
8422 view.select_next(&SelectNext(false), cx);
8423 assert_eq!(view.selected_ranges(cx), &ranges[1..3]);
8424
8425 view.undo_selection(&UndoSelection, cx);
8426 assert_eq!(view.selected_ranges(cx), &ranges[1..2]);
8427
8428 view.redo_selection(&RedoSelection, cx);
8429 assert_eq!(view.selected_ranges(cx), &ranges[1..3]);
8430
8431 view.select_next(&SelectNext(false), cx);
8432 assert_eq!(view.selected_ranges(cx), &ranges[1..4]);
8433
8434 view.select_next(&SelectNext(false), cx);
8435 assert_eq!(view.selected_ranges(cx), &ranges[0..4]);
8436 });
8437 }
8438
8439 #[gpui::test]
8440 async fn test_select_larger_smaller_syntax_node(cx: &mut gpui::TestAppContext) {
8441 cx.update(populate_settings);
8442 let language = Arc::new(Language::new(
8443 LanguageConfig::default(),
8444 Some(tree_sitter_rust::language()),
8445 ));
8446
8447 let text = r#"
8448 use mod1::mod2::{mod3, mod4};
8449
8450 fn fn_1(param1: bool, param2: &str) {
8451 let var1 = "text";
8452 }
8453 "#
8454 .unindent();
8455
8456 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
8457 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
8458 let (_, view) = cx.add_window(|cx| build_editor(buffer, cx));
8459 view.condition(&cx, |view, cx| !view.buffer.read(cx).is_parsing(cx))
8460 .await;
8461
8462 view.update(cx, |view, cx| {
8463 view.select_display_ranges(
8464 &[
8465 DisplayPoint::new(0, 25)..DisplayPoint::new(0, 25),
8466 DisplayPoint::new(2, 24)..DisplayPoint::new(2, 12),
8467 DisplayPoint::new(3, 18)..DisplayPoint::new(3, 18),
8468 ],
8469 cx,
8470 );
8471 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
8472 });
8473 assert_eq!(
8474 view.update(cx, |view, cx| view.selected_display_ranges(cx)),
8475 &[
8476 DisplayPoint::new(0, 23)..DisplayPoint::new(0, 27),
8477 DisplayPoint::new(2, 35)..DisplayPoint::new(2, 7),
8478 DisplayPoint::new(3, 15)..DisplayPoint::new(3, 21),
8479 ]
8480 );
8481
8482 view.update(cx, |view, cx| {
8483 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
8484 });
8485 assert_eq!(
8486 view.update(cx, |view, cx| view.selected_display_ranges(cx)),
8487 &[
8488 DisplayPoint::new(0, 16)..DisplayPoint::new(0, 28),
8489 DisplayPoint::new(4, 1)..DisplayPoint::new(2, 0),
8490 ]
8491 );
8492
8493 view.update(cx, |view, cx| {
8494 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
8495 });
8496 assert_eq!(
8497 view.update(cx, |view, cx| view.selected_display_ranges(cx)),
8498 &[DisplayPoint::new(5, 0)..DisplayPoint::new(0, 0)]
8499 );
8500
8501 // Trying to expand the selected syntax node one more time has no effect.
8502 view.update(cx, |view, cx| {
8503 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
8504 });
8505 assert_eq!(
8506 view.update(cx, |view, cx| view.selected_display_ranges(cx)),
8507 &[DisplayPoint::new(5, 0)..DisplayPoint::new(0, 0)]
8508 );
8509
8510 view.update(cx, |view, cx| {
8511 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
8512 });
8513 assert_eq!(
8514 view.update(cx, |view, cx| view.selected_display_ranges(cx)),
8515 &[
8516 DisplayPoint::new(0, 16)..DisplayPoint::new(0, 28),
8517 DisplayPoint::new(4, 1)..DisplayPoint::new(2, 0),
8518 ]
8519 );
8520
8521 view.update(cx, |view, cx| {
8522 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
8523 });
8524 assert_eq!(
8525 view.update(cx, |view, cx| view.selected_display_ranges(cx)),
8526 &[
8527 DisplayPoint::new(0, 23)..DisplayPoint::new(0, 27),
8528 DisplayPoint::new(2, 35)..DisplayPoint::new(2, 7),
8529 DisplayPoint::new(3, 15)..DisplayPoint::new(3, 21),
8530 ]
8531 );
8532
8533 view.update(cx, |view, cx| {
8534 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
8535 });
8536 assert_eq!(
8537 view.update(cx, |view, cx| view.selected_display_ranges(cx)),
8538 &[
8539 DisplayPoint::new(0, 25)..DisplayPoint::new(0, 25),
8540 DisplayPoint::new(2, 24)..DisplayPoint::new(2, 12),
8541 DisplayPoint::new(3, 18)..DisplayPoint::new(3, 18),
8542 ]
8543 );
8544
8545 // Trying to shrink the selected syntax node one more time has no effect.
8546 view.update(cx, |view, cx| {
8547 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
8548 });
8549 assert_eq!(
8550 view.update(cx, |view, cx| view.selected_display_ranges(cx)),
8551 &[
8552 DisplayPoint::new(0, 25)..DisplayPoint::new(0, 25),
8553 DisplayPoint::new(2, 24)..DisplayPoint::new(2, 12),
8554 DisplayPoint::new(3, 18)..DisplayPoint::new(3, 18),
8555 ]
8556 );
8557
8558 // Ensure that we keep expanding the selection if the larger selection starts or ends within
8559 // a fold.
8560 view.update(cx, |view, cx| {
8561 view.fold_ranges(
8562 vec![
8563 Point::new(0, 21)..Point::new(0, 24),
8564 Point::new(3, 20)..Point::new(3, 22),
8565 ],
8566 cx,
8567 );
8568 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
8569 });
8570 assert_eq!(
8571 view.update(cx, |view, cx| view.selected_display_ranges(cx)),
8572 &[
8573 DisplayPoint::new(0, 16)..DisplayPoint::new(0, 28),
8574 DisplayPoint::new(2, 35)..DisplayPoint::new(2, 7),
8575 DisplayPoint::new(3, 4)..DisplayPoint::new(3, 23),
8576 ]
8577 );
8578 }
8579
8580 #[gpui::test]
8581 async fn test_autoindent_selections(cx: &mut gpui::TestAppContext) {
8582 cx.update(populate_settings);
8583 let language = Arc::new(
8584 Language::new(
8585 LanguageConfig {
8586 brackets: vec![
8587 BracketPair {
8588 start: "{".to_string(),
8589 end: "}".to_string(),
8590 close: false,
8591 newline: true,
8592 },
8593 BracketPair {
8594 start: "(".to_string(),
8595 end: ")".to_string(),
8596 close: false,
8597 newline: true,
8598 },
8599 ],
8600 ..Default::default()
8601 },
8602 Some(tree_sitter_rust::language()),
8603 )
8604 .with_indents_query(
8605 r#"
8606 (_ "(" ")" @end) @indent
8607 (_ "{" "}" @end) @indent
8608 "#,
8609 )
8610 .unwrap(),
8611 );
8612
8613 let text = "fn a() {}";
8614
8615 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
8616 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
8617 let (_, editor) = cx.add_window(|cx| build_editor(buffer, cx));
8618 editor
8619 .condition(&cx, |editor, cx| !editor.buffer.read(cx).is_parsing(cx))
8620 .await;
8621
8622 editor.update(cx, |editor, cx| {
8623 editor.select_ranges([5..5, 8..8, 9..9], None, cx);
8624 editor.newline(&Newline, cx);
8625 assert_eq!(editor.text(cx), "fn a(\n \n) {\n \n}\n");
8626 assert_eq!(
8627 editor.selected_ranges(cx),
8628 &[
8629 Point::new(1, 4)..Point::new(1, 4),
8630 Point::new(3, 4)..Point::new(3, 4),
8631 Point::new(5, 0)..Point::new(5, 0)
8632 ]
8633 );
8634 });
8635 }
8636
8637 #[gpui::test]
8638 async fn test_autoclose_pairs(cx: &mut gpui::TestAppContext) {
8639 cx.update(populate_settings);
8640 let language = Arc::new(Language::new(
8641 LanguageConfig {
8642 brackets: vec![
8643 BracketPair {
8644 start: "{".to_string(),
8645 end: "}".to_string(),
8646 close: true,
8647 newline: true,
8648 },
8649 BracketPair {
8650 start: "/*".to_string(),
8651 end: " */".to_string(),
8652 close: true,
8653 newline: true,
8654 },
8655 ],
8656 autoclose_before: "})]".to_string(),
8657 ..Default::default()
8658 },
8659 Some(tree_sitter_rust::language()),
8660 ));
8661
8662 let text = r#"
8663 a
8664
8665 /
8666
8667 "#
8668 .unindent();
8669
8670 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
8671 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
8672 let (_, view) = cx.add_window(|cx| build_editor(buffer, cx));
8673 view.condition(&cx, |view, cx| !view.buffer.read(cx).is_parsing(cx))
8674 .await;
8675
8676 view.update(cx, |view, cx| {
8677 view.select_display_ranges(
8678 &[
8679 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
8680 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
8681 ],
8682 cx,
8683 );
8684
8685 view.handle_input(&Input("{".to_string()), cx);
8686 view.handle_input(&Input("{".to_string()), cx);
8687 view.handle_input(&Input("{".to_string()), cx);
8688 assert_eq!(
8689 view.text(cx),
8690 "
8691 {{{}}}
8692 {{{}}}
8693 /
8694
8695 "
8696 .unindent()
8697 );
8698
8699 view.move_right(&MoveRight, cx);
8700 view.handle_input(&Input("}".to_string()), cx);
8701 view.handle_input(&Input("}".to_string()), cx);
8702 view.handle_input(&Input("}".to_string()), cx);
8703 assert_eq!(
8704 view.text(cx),
8705 "
8706 {{{}}}}
8707 {{{}}}}
8708 /
8709
8710 "
8711 .unindent()
8712 );
8713
8714 view.undo(&Undo, cx);
8715 view.handle_input(&Input("/".to_string()), cx);
8716 view.handle_input(&Input("*".to_string()), cx);
8717 assert_eq!(
8718 view.text(cx),
8719 "
8720 /* */
8721 /* */
8722 /
8723
8724 "
8725 .unindent()
8726 );
8727
8728 view.undo(&Undo, cx);
8729 view.select_display_ranges(
8730 &[
8731 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
8732 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
8733 ],
8734 cx,
8735 );
8736 view.handle_input(&Input("*".to_string()), cx);
8737 assert_eq!(
8738 view.text(cx),
8739 "
8740 a
8741
8742 /*
8743 *
8744 "
8745 .unindent()
8746 );
8747
8748 // Don't autoclose if the next character isn't whitespace and isn't
8749 // listed in the language's "autoclose_before" section.
8750 view.finalize_last_transaction(cx);
8751 view.select_display_ranges(&[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)], cx);
8752 view.handle_input(&Input("{".to_string()), cx);
8753 assert_eq!(
8754 view.text(cx),
8755 "
8756 {a
8757
8758 /*
8759 *
8760 "
8761 .unindent()
8762 );
8763
8764 view.undo(&Undo, cx);
8765 view.select_display_ranges(&[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1)], cx);
8766 view.handle_input(&Input("{".to_string()), cx);
8767 assert_eq!(
8768 view.text(cx),
8769 "
8770 {a}
8771
8772 /*
8773 *
8774 "
8775 .unindent()
8776 );
8777 assert_eq!(
8778 view.selected_display_ranges(cx),
8779 [DisplayPoint::new(0, 1)..DisplayPoint::new(0, 2)]
8780 );
8781 });
8782 }
8783
8784 #[gpui::test]
8785 async fn test_snippets(cx: &mut gpui::TestAppContext) {
8786 cx.update(populate_settings);
8787
8788 let text = "
8789 a. b
8790 a. b
8791 a. b
8792 "
8793 .unindent();
8794 let buffer = cx.update(|cx| MultiBuffer::build_simple(&text, cx));
8795 let (_, editor) = cx.add_window(|cx| build_editor(buffer, cx));
8796
8797 editor.update(cx, |editor, cx| {
8798 let buffer = &editor.snapshot(cx).buffer_snapshot;
8799 let snippet = Snippet::parse("f(${1:one}, ${2:two}, ${1:three})$0").unwrap();
8800 let insertion_ranges = [
8801 Point::new(0, 2).to_offset(buffer)..Point::new(0, 2).to_offset(buffer),
8802 Point::new(1, 2).to_offset(buffer)..Point::new(1, 2).to_offset(buffer),
8803 Point::new(2, 2).to_offset(buffer)..Point::new(2, 2).to_offset(buffer),
8804 ];
8805
8806 editor
8807 .insert_snippet(&insertion_ranges, snippet, cx)
8808 .unwrap();
8809 assert_eq!(
8810 editor.text(cx),
8811 "
8812 a.f(one, two, three) b
8813 a.f(one, two, three) b
8814 a.f(one, two, three) b
8815 "
8816 .unindent()
8817 );
8818 assert_eq!(
8819 editor.selected_ranges::<Point>(cx),
8820 &[
8821 Point::new(0, 4)..Point::new(0, 7),
8822 Point::new(0, 14)..Point::new(0, 19),
8823 Point::new(1, 4)..Point::new(1, 7),
8824 Point::new(1, 14)..Point::new(1, 19),
8825 Point::new(2, 4)..Point::new(2, 7),
8826 Point::new(2, 14)..Point::new(2, 19),
8827 ]
8828 );
8829
8830 // Can't move earlier than the first tab stop
8831 editor.move_to_prev_snippet_tabstop(cx);
8832 assert_eq!(
8833 editor.selected_ranges::<Point>(cx),
8834 &[
8835 Point::new(0, 4)..Point::new(0, 7),
8836 Point::new(0, 14)..Point::new(0, 19),
8837 Point::new(1, 4)..Point::new(1, 7),
8838 Point::new(1, 14)..Point::new(1, 19),
8839 Point::new(2, 4)..Point::new(2, 7),
8840 Point::new(2, 14)..Point::new(2, 19),
8841 ]
8842 );
8843
8844 assert!(editor.move_to_next_snippet_tabstop(cx));
8845 assert_eq!(
8846 editor.selected_ranges::<Point>(cx),
8847 &[
8848 Point::new(0, 9)..Point::new(0, 12),
8849 Point::new(1, 9)..Point::new(1, 12),
8850 Point::new(2, 9)..Point::new(2, 12)
8851 ]
8852 );
8853
8854 editor.move_to_prev_snippet_tabstop(cx);
8855 assert_eq!(
8856 editor.selected_ranges::<Point>(cx),
8857 &[
8858 Point::new(0, 4)..Point::new(0, 7),
8859 Point::new(0, 14)..Point::new(0, 19),
8860 Point::new(1, 4)..Point::new(1, 7),
8861 Point::new(1, 14)..Point::new(1, 19),
8862 Point::new(2, 4)..Point::new(2, 7),
8863 Point::new(2, 14)..Point::new(2, 19),
8864 ]
8865 );
8866
8867 assert!(editor.move_to_next_snippet_tabstop(cx));
8868 assert!(editor.move_to_next_snippet_tabstop(cx));
8869 assert_eq!(
8870 editor.selected_ranges::<Point>(cx),
8871 &[
8872 Point::new(0, 20)..Point::new(0, 20),
8873 Point::new(1, 20)..Point::new(1, 20),
8874 Point::new(2, 20)..Point::new(2, 20)
8875 ]
8876 );
8877
8878 // As soon as the last tab stop is reached, snippet state is gone
8879 editor.move_to_prev_snippet_tabstop(cx);
8880 assert_eq!(
8881 editor.selected_ranges::<Point>(cx),
8882 &[
8883 Point::new(0, 20)..Point::new(0, 20),
8884 Point::new(1, 20)..Point::new(1, 20),
8885 Point::new(2, 20)..Point::new(2, 20)
8886 ]
8887 );
8888 });
8889 }
8890
8891 #[gpui::test]
8892 async fn test_format_during_save(cx: &mut gpui::TestAppContext) {
8893 cx.foreground().forbid_parking();
8894 cx.update(populate_settings);
8895
8896 let (mut language_server_config, mut fake_servers) = LanguageServerConfig::fake();
8897 language_server_config.set_fake_capabilities(lsp::ServerCapabilities {
8898 document_formatting_provider: Some(lsp::OneOf::Left(true)),
8899 ..Default::default()
8900 });
8901 let language = Arc::new(Language::new(
8902 LanguageConfig {
8903 name: "Rust".into(),
8904 path_suffixes: vec!["rs".to_string()],
8905 language_server: Some(language_server_config),
8906 ..Default::default()
8907 },
8908 Some(tree_sitter_rust::language()),
8909 ));
8910
8911 let fs = FakeFs::new(cx.background().clone());
8912 fs.insert_file("/file.rs", Default::default()).await;
8913
8914 let project = Project::test(fs, cx);
8915 project.update(cx, |project, _| project.languages().add(language));
8916
8917 let worktree_id = project
8918 .update(cx, |project, cx| {
8919 project.find_or_create_local_worktree("/file.rs", true, cx)
8920 })
8921 .await
8922 .unwrap()
8923 .0
8924 .read_with(cx, |tree, _| tree.id());
8925 let buffer = project
8926 .update(cx, |project, cx| project.open_buffer((worktree_id, ""), cx))
8927 .await
8928 .unwrap();
8929 let mut fake_server = fake_servers.next().await.unwrap();
8930
8931 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
8932 let (_, editor) = cx.add_window(|cx| build_editor(buffer, cx));
8933 editor.update(cx, |editor, cx| editor.set_text("one\ntwo\nthree\n", cx));
8934 assert!(cx.read(|cx| editor.is_dirty(cx)));
8935
8936 let save = cx.update(|cx| editor.save(project.clone(), cx));
8937 fake_server
8938 .handle_request::<lsp::request::Formatting, _, _>(move |params, _| async move {
8939 assert_eq!(
8940 params.text_document.uri,
8941 lsp::Url::from_file_path("/file.rs").unwrap()
8942 );
8943 Some(vec![lsp::TextEdit::new(
8944 lsp::Range::new(lsp::Position::new(0, 3), lsp::Position::new(1, 0)),
8945 ", ".to_string(),
8946 )])
8947 })
8948 .next()
8949 .await;
8950 save.await.unwrap();
8951 assert_eq!(
8952 editor.read_with(cx, |editor, cx| editor.text(cx)),
8953 "one, two\nthree\n"
8954 );
8955 assert!(!cx.read(|cx| editor.is_dirty(cx)));
8956
8957 editor.update(cx, |editor, cx| editor.set_text("one\ntwo\nthree\n", cx));
8958 assert!(cx.read(|cx| editor.is_dirty(cx)));
8959
8960 // Ensure we can still save even if formatting hangs.
8961 fake_server.handle_request::<lsp::request::Formatting, _, _>(move |params, _| async move {
8962 assert_eq!(
8963 params.text_document.uri,
8964 lsp::Url::from_file_path("/file.rs").unwrap()
8965 );
8966 futures::future::pending::<()>().await;
8967 unreachable!()
8968 });
8969 let save = cx.update(|cx| editor.save(project.clone(), cx));
8970 cx.foreground().advance_clock(items::FORMAT_TIMEOUT);
8971 save.await.unwrap();
8972 assert_eq!(
8973 editor.read_with(cx, |editor, cx| editor.text(cx)),
8974 "one\ntwo\nthree\n"
8975 );
8976 assert!(!cx.read(|cx| editor.is_dirty(cx)));
8977 }
8978
8979 #[gpui::test]
8980 async fn test_completion(cx: &mut gpui::TestAppContext) {
8981 cx.update(populate_settings);
8982
8983 let (mut language_server_config, mut fake_servers) = LanguageServerConfig::fake();
8984 language_server_config.set_fake_capabilities(lsp::ServerCapabilities {
8985 completion_provider: Some(lsp::CompletionOptions {
8986 trigger_characters: Some(vec![".".to_string(), ":".to_string()]),
8987 ..Default::default()
8988 }),
8989 ..Default::default()
8990 });
8991 let language = Arc::new(Language::new(
8992 LanguageConfig {
8993 name: "Rust".into(),
8994 path_suffixes: vec!["rs".to_string()],
8995 language_server: Some(language_server_config),
8996 ..Default::default()
8997 },
8998 Some(tree_sitter_rust::language()),
8999 ));
9000
9001 let text = "
9002 one
9003 two
9004 three
9005 "
9006 .unindent();
9007
9008 let fs = FakeFs::new(cx.background().clone());
9009 fs.insert_file("/file.rs", text).await;
9010
9011 let project = Project::test(fs, cx);
9012 project.update(cx, |project, _| project.languages().add(language));
9013
9014 let worktree_id = project
9015 .update(cx, |project, cx| {
9016 project.find_or_create_local_worktree("/file.rs", true, cx)
9017 })
9018 .await
9019 .unwrap()
9020 .0
9021 .read_with(cx, |tree, _| tree.id());
9022 let buffer = project
9023 .update(cx, |project, cx| project.open_buffer((worktree_id, ""), cx))
9024 .await
9025 .unwrap();
9026 let mut fake_server = fake_servers.next().await.unwrap();
9027
9028 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
9029 let (_, editor) = cx.add_window(|cx| build_editor(buffer, cx));
9030
9031 editor.update(cx, |editor, cx| {
9032 editor.project = Some(project);
9033 editor.select_ranges([Point::new(0, 3)..Point::new(0, 3)], None, cx);
9034 editor.handle_input(&Input(".".to_string()), cx);
9035 });
9036
9037 handle_completion_request(
9038 &mut fake_server,
9039 "/file.rs",
9040 Point::new(0, 4),
9041 vec![
9042 (Point::new(0, 4)..Point::new(0, 4), "first_completion"),
9043 (Point::new(0, 4)..Point::new(0, 4), "second_completion"),
9044 ],
9045 )
9046 .await;
9047 editor
9048 .condition(&cx, |editor, _| editor.context_menu_visible())
9049 .await;
9050
9051 let apply_additional_edits = editor.update(cx, |editor, cx| {
9052 editor.move_down(&MoveDown, cx);
9053 let apply_additional_edits = editor
9054 .confirm_completion(&ConfirmCompletion(None), cx)
9055 .unwrap();
9056 assert_eq!(
9057 editor.text(cx),
9058 "
9059 one.second_completion
9060 two
9061 three
9062 "
9063 .unindent()
9064 );
9065 apply_additional_edits
9066 });
9067
9068 handle_resolve_completion_request(
9069 &mut fake_server,
9070 Some((Point::new(2, 5)..Point::new(2, 5), "\nadditional edit")),
9071 )
9072 .await;
9073 apply_additional_edits.await.unwrap();
9074 assert_eq!(
9075 editor.read_with(cx, |editor, cx| editor.text(cx)),
9076 "
9077 one.second_completion
9078 two
9079 three
9080 additional edit
9081 "
9082 .unindent()
9083 );
9084
9085 editor.update(cx, |editor, cx| {
9086 editor.select_ranges(
9087 [
9088 Point::new(1, 3)..Point::new(1, 3),
9089 Point::new(2, 5)..Point::new(2, 5),
9090 ],
9091 None,
9092 cx,
9093 );
9094
9095 editor.handle_input(&Input(" ".to_string()), cx);
9096 assert!(editor.context_menu.is_none());
9097 editor.handle_input(&Input("s".to_string()), cx);
9098 assert!(editor.context_menu.is_none());
9099 });
9100
9101 handle_completion_request(
9102 &mut fake_server,
9103 "/file.rs",
9104 Point::new(2, 7),
9105 vec![
9106 (Point::new(2, 6)..Point::new(2, 7), "fourth_completion"),
9107 (Point::new(2, 6)..Point::new(2, 7), "fifth_completion"),
9108 (Point::new(2, 6)..Point::new(2, 7), "sixth_completion"),
9109 ],
9110 )
9111 .await;
9112 editor
9113 .condition(&cx, |editor, _| editor.context_menu_visible())
9114 .await;
9115
9116 editor.update(cx, |editor, cx| {
9117 editor.handle_input(&Input("i".to_string()), cx);
9118 });
9119
9120 handle_completion_request(
9121 &mut fake_server,
9122 "/file.rs",
9123 Point::new(2, 8),
9124 vec![
9125 (Point::new(2, 6)..Point::new(2, 8), "fourth_completion"),
9126 (Point::new(2, 6)..Point::new(2, 8), "fifth_completion"),
9127 (Point::new(2, 6)..Point::new(2, 8), "sixth_completion"),
9128 ],
9129 )
9130 .await;
9131 editor
9132 .condition(&cx, |editor, _| editor.context_menu_visible())
9133 .await;
9134
9135 let apply_additional_edits = editor.update(cx, |editor, cx| {
9136 let apply_additional_edits = editor
9137 .confirm_completion(&ConfirmCompletion(None), cx)
9138 .unwrap();
9139 assert_eq!(
9140 editor.text(cx),
9141 "
9142 one.second_completion
9143 two sixth_completion
9144 three sixth_completion
9145 additional edit
9146 "
9147 .unindent()
9148 );
9149 apply_additional_edits
9150 });
9151 handle_resolve_completion_request(&mut fake_server, None).await;
9152 apply_additional_edits.await.unwrap();
9153
9154 async fn handle_completion_request(
9155 fake: &mut FakeLanguageServer,
9156 path: &'static str,
9157 position: Point,
9158 completions: Vec<(Range<Point>, &'static str)>,
9159 ) {
9160 fake.handle_request::<lsp::request::Completion, _, _>(move |params, _| {
9161 let completions = completions.clone();
9162 async move {
9163 assert_eq!(
9164 params.text_document_position.text_document.uri,
9165 lsp::Url::from_file_path(path).unwrap()
9166 );
9167 assert_eq!(
9168 params.text_document_position.position,
9169 lsp::Position::new(position.row, position.column)
9170 );
9171 Some(lsp::CompletionResponse::Array(
9172 completions
9173 .iter()
9174 .map(|(range, new_text)| lsp::CompletionItem {
9175 label: new_text.to_string(),
9176 text_edit: Some(lsp::CompletionTextEdit::Edit(lsp::TextEdit {
9177 range: lsp::Range::new(
9178 lsp::Position::new(range.start.row, range.start.column),
9179 lsp::Position::new(range.start.row, range.start.column),
9180 ),
9181 new_text: new_text.to_string(),
9182 })),
9183 ..Default::default()
9184 })
9185 .collect(),
9186 ))
9187 }
9188 })
9189 .next()
9190 .await;
9191 }
9192
9193 async fn handle_resolve_completion_request(
9194 fake: &mut FakeLanguageServer,
9195 edit: Option<(Range<Point>, &'static str)>,
9196 ) {
9197 fake.handle_request::<lsp::request::ResolveCompletionItem, _, _>(move |_, _| {
9198 let edit = edit.clone();
9199 async move {
9200 lsp::CompletionItem {
9201 additional_text_edits: edit.map(|(range, new_text)| {
9202 vec![lsp::TextEdit::new(
9203 lsp::Range::new(
9204 lsp::Position::new(range.start.row, range.start.column),
9205 lsp::Position::new(range.end.row, range.end.column),
9206 ),
9207 new_text.to_string(),
9208 )]
9209 }),
9210 ..Default::default()
9211 }
9212 }
9213 })
9214 .next()
9215 .await;
9216 }
9217 }
9218
9219 #[gpui::test]
9220 async fn test_toggle_comment(cx: &mut gpui::TestAppContext) {
9221 cx.update(populate_settings);
9222 let language = Arc::new(Language::new(
9223 LanguageConfig {
9224 line_comment: Some("// ".to_string()),
9225 ..Default::default()
9226 },
9227 Some(tree_sitter_rust::language()),
9228 ));
9229
9230 let text = "
9231 fn a() {
9232 //b();
9233 // c();
9234 // d();
9235 }
9236 "
9237 .unindent();
9238
9239 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
9240 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
9241 let (_, view) = cx.add_window(|cx| build_editor(buffer, cx));
9242
9243 view.update(cx, |editor, cx| {
9244 // If multiple selections intersect a line, the line is only
9245 // toggled once.
9246 editor.select_display_ranges(
9247 &[
9248 DisplayPoint::new(1, 3)..DisplayPoint::new(2, 3),
9249 DisplayPoint::new(3, 5)..DisplayPoint::new(3, 6),
9250 ],
9251 cx,
9252 );
9253 editor.toggle_comments(&ToggleComments, cx);
9254 assert_eq!(
9255 editor.text(cx),
9256 "
9257 fn a() {
9258 b();
9259 c();
9260 d();
9261 }
9262 "
9263 .unindent()
9264 );
9265
9266 // The comment prefix is inserted at the same column for every line
9267 // in a selection.
9268 editor.select_display_ranges(&[DisplayPoint::new(1, 3)..DisplayPoint::new(3, 6)], cx);
9269 editor.toggle_comments(&ToggleComments, cx);
9270 assert_eq!(
9271 editor.text(cx),
9272 "
9273 fn a() {
9274 // b();
9275 // c();
9276 // d();
9277 }
9278 "
9279 .unindent()
9280 );
9281
9282 // If a selection ends at the beginning of a line, that line is not toggled.
9283 editor.select_display_ranges(&[DisplayPoint::new(2, 0)..DisplayPoint::new(3, 0)], cx);
9284 editor.toggle_comments(&ToggleComments, cx);
9285 assert_eq!(
9286 editor.text(cx),
9287 "
9288 fn a() {
9289 // b();
9290 c();
9291 // d();
9292 }
9293 "
9294 .unindent()
9295 );
9296 });
9297 }
9298
9299 #[gpui::test]
9300 fn test_editing_disjoint_excerpts(cx: &mut gpui::MutableAppContext) {
9301 populate_settings(cx);
9302 let buffer = cx.add_model(|cx| Buffer::new(0, sample_text(3, 4, 'a'), cx));
9303 let multibuffer = cx.add_model(|cx| {
9304 let mut multibuffer = MultiBuffer::new(0);
9305 multibuffer.push_excerpts(
9306 buffer.clone(),
9307 [
9308 Point::new(0, 0)..Point::new(0, 4),
9309 Point::new(1, 0)..Point::new(1, 4),
9310 ],
9311 cx,
9312 );
9313 multibuffer
9314 });
9315
9316 assert_eq!(multibuffer.read(cx).read(cx).text(), "aaaa\nbbbb");
9317
9318 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(multibuffer, cx));
9319 view.update(cx, |view, cx| {
9320 assert_eq!(view.text(cx), "aaaa\nbbbb");
9321 view.select_ranges(
9322 [
9323 Point::new(0, 0)..Point::new(0, 0),
9324 Point::new(1, 0)..Point::new(1, 0),
9325 ],
9326 None,
9327 cx,
9328 );
9329
9330 view.handle_input(&Input("X".to_string()), cx);
9331 assert_eq!(view.text(cx), "Xaaaa\nXbbbb");
9332 assert_eq!(
9333 view.selected_ranges(cx),
9334 [
9335 Point::new(0, 1)..Point::new(0, 1),
9336 Point::new(1, 1)..Point::new(1, 1),
9337 ]
9338 )
9339 });
9340 }
9341
9342 #[gpui::test]
9343 fn test_editing_overlapping_excerpts(cx: &mut gpui::MutableAppContext) {
9344 populate_settings(cx);
9345 let buffer = cx.add_model(|cx| Buffer::new(0, sample_text(3, 4, 'a'), cx));
9346 let multibuffer = cx.add_model(|cx| {
9347 let mut multibuffer = MultiBuffer::new(0);
9348 multibuffer.push_excerpts(
9349 buffer,
9350 [
9351 Point::new(0, 0)..Point::new(1, 4),
9352 Point::new(1, 0)..Point::new(2, 4),
9353 ],
9354 cx,
9355 );
9356 multibuffer
9357 });
9358
9359 assert_eq!(
9360 multibuffer.read(cx).read(cx).text(),
9361 "aaaa\nbbbb\nbbbb\ncccc"
9362 );
9363
9364 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(multibuffer, cx));
9365 view.update(cx, |view, cx| {
9366 view.select_ranges(
9367 [
9368 Point::new(1, 1)..Point::new(1, 1),
9369 Point::new(2, 3)..Point::new(2, 3),
9370 ],
9371 None,
9372 cx,
9373 );
9374
9375 view.handle_input(&Input("X".to_string()), cx);
9376 assert_eq!(view.text(cx), "aaaa\nbXbbXb\nbXbbXb\ncccc");
9377 assert_eq!(
9378 view.selected_ranges(cx),
9379 [
9380 Point::new(1, 2)..Point::new(1, 2),
9381 Point::new(2, 5)..Point::new(2, 5),
9382 ]
9383 );
9384
9385 view.newline(&Newline, cx);
9386 assert_eq!(view.text(cx), "aaaa\nbX\nbbX\nb\nbX\nbbX\nb\ncccc");
9387 assert_eq!(
9388 view.selected_ranges(cx),
9389 [
9390 Point::new(2, 0)..Point::new(2, 0),
9391 Point::new(6, 0)..Point::new(6, 0),
9392 ]
9393 );
9394 });
9395 }
9396
9397 #[gpui::test]
9398 fn test_refresh_selections(cx: &mut gpui::MutableAppContext) {
9399 populate_settings(cx);
9400 let buffer = cx.add_model(|cx| Buffer::new(0, sample_text(3, 4, 'a'), cx));
9401 let mut excerpt1_id = None;
9402 let multibuffer = cx.add_model(|cx| {
9403 let mut multibuffer = MultiBuffer::new(0);
9404 excerpt1_id = multibuffer
9405 .push_excerpts(
9406 buffer.clone(),
9407 [
9408 Point::new(0, 0)..Point::new(1, 4),
9409 Point::new(1, 0)..Point::new(2, 4),
9410 ],
9411 cx,
9412 )
9413 .into_iter()
9414 .next();
9415 multibuffer
9416 });
9417 assert_eq!(
9418 multibuffer.read(cx).read(cx).text(),
9419 "aaaa\nbbbb\nbbbb\ncccc"
9420 );
9421 let (_, editor) = cx.add_window(Default::default(), |cx| {
9422 let mut editor = build_editor(multibuffer.clone(), cx);
9423 let snapshot = editor.snapshot(cx);
9424 editor.select_ranges([Point::new(1, 3)..Point::new(1, 3)], None, cx);
9425 editor.begin_selection(Point::new(2, 1).to_display_point(&snapshot), true, 1, cx);
9426 assert_eq!(
9427 editor.selected_ranges(cx),
9428 [
9429 Point::new(1, 3)..Point::new(1, 3),
9430 Point::new(2, 1)..Point::new(2, 1),
9431 ]
9432 );
9433 editor
9434 });
9435
9436 // Refreshing selections is a no-op when excerpts haven't changed.
9437 editor.update(cx, |editor, cx| {
9438 editor.refresh_selections(cx);
9439 assert_eq!(
9440 editor.selected_ranges(cx),
9441 [
9442 Point::new(1, 3)..Point::new(1, 3),
9443 Point::new(2, 1)..Point::new(2, 1),
9444 ]
9445 );
9446 });
9447
9448 multibuffer.update(cx, |multibuffer, cx| {
9449 multibuffer.remove_excerpts([&excerpt1_id.unwrap()], cx);
9450 });
9451 editor.update(cx, |editor, cx| {
9452 // Removing an excerpt causes the first selection to become degenerate.
9453 assert_eq!(
9454 editor.selected_ranges(cx),
9455 [
9456 Point::new(0, 0)..Point::new(0, 0),
9457 Point::new(0, 1)..Point::new(0, 1)
9458 ]
9459 );
9460
9461 // Refreshing selections will relocate the first selection to the original buffer
9462 // location.
9463 editor.refresh_selections(cx);
9464 assert_eq!(
9465 editor.selected_ranges(cx),
9466 [
9467 Point::new(0, 1)..Point::new(0, 1),
9468 Point::new(0, 3)..Point::new(0, 3)
9469 ]
9470 );
9471 assert!(editor.pending_selection.is_some());
9472 });
9473 }
9474
9475 #[gpui::test]
9476 fn test_refresh_selections_while_selecting_with_mouse(cx: &mut gpui::MutableAppContext) {
9477 populate_settings(cx);
9478 let buffer = cx.add_model(|cx| Buffer::new(0, sample_text(3, 4, 'a'), cx));
9479 let mut excerpt1_id = None;
9480 let multibuffer = cx.add_model(|cx| {
9481 let mut multibuffer = MultiBuffer::new(0);
9482 excerpt1_id = multibuffer
9483 .push_excerpts(
9484 buffer.clone(),
9485 [
9486 Point::new(0, 0)..Point::new(1, 4),
9487 Point::new(1, 0)..Point::new(2, 4),
9488 ],
9489 cx,
9490 )
9491 .into_iter()
9492 .next();
9493 multibuffer
9494 });
9495 assert_eq!(
9496 multibuffer.read(cx).read(cx).text(),
9497 "aaaa\nbbbb\nbbbb\ncccc"
9498 );
9499 let (_, editor) = cx.add_window(Default::default(), |cx| {
9500 let mut editor = build_editor(multibuffer.clone(), cx);
9501 let snapshot = editor.snapshot(cx);
9502 editor.begin_selection(Point::new(1, 3).to_display_point(&snapshot), false, 1, cx);
9503 assert_eq!(
9504 editor.selected_ranges(cx),
9505 [Point::new(1, 3)..Point::new(1, 3)]
9506 );
9507 editor
9508 });
9509
9510 multibuffer.update(cx, |multibuffer, cx| {
9511 multibuffer.remove_excerpts([&excerpt1_id.unwrap()], cx);
9512 });
9513 editor.update(cx, |editor, cx| {
9514 assert_eq!(
9515 editor.selected_ranges(cx),
9516 [Point::new(0, 0)..Point::new(0, 0)]
9517 );
9518
9519 // Ensure we don't panic when selections are refreshed and that the pending selection is finalized.
9520 editor.refresh_selections(cx);
9521 assert_eq!(
9522 editor.selected_ranges(cx),
9523 [Point::new(0, 3)..Point::new(0, 3)]
9524 );
9525 assert!(editor.pending_selection.is_some());
9526 });
9527 }
9528
9529 #[gpui::test]
9530 async fn test_extra_newline_insertion(cx: &mut gpui::TestAppContext) {
9531 cx.update(populate_settings);
9532 let language = Arc::new(Language::new(
9533 LanguageConfig {
9534 brackets: vec![
9535 BracketPair {
9536 start: "{".to_string(),
9537 end: "}".to_string(),
9538 close: true,
9539 newline: true,
9540 },
9541 BracketPair {
9542 start: "/* ".to_string(),
9543 end: " */".to_string(),
9544 close: true,
9545 newline: true,
9546 },
9547 ],
9548 ..Default::default()
9549 },
9550 Some(tree_sitter_rust::language()),
9551 ));
9552
9553 let text = concat!(
9554 "{ }\n", // Suppress rustfmt
9555 " x\n", //
9556 " /* */\n", //
9557 "x\n", //
9558 "{{} }\n", //
9559 );
9560
9561 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, cx));
9562 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
9563 let (_, view) = cx.add_window(|cx| build_editor(buffer, cx));
9564 view.condition(&cx, |view, cx| !view.buffer.read(cx).is_parsing(cx))
9565 .await;
9566
9567 view.update(cx, |view, cx| {
9568 view.select_display_ranges(
9569 &[
9570 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 3),
9571 DisplayPoint::new(2, 5)..DisplayPoint::new(2, 5),
9572 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 4),
9573 ],
9574 cx,
9575 );
9576 view.newline(&Newline, cx);
9577
9578 assert_eq!(
9579 view.buffer().read(cx).read(cx).text(),
9580 concat!(
9581 "{ \n", // Suppress rustfmt
9582 "\n", //
9583 "}\n", //
9584 " x\n", //
9585 " /* \n", //
9586 " \n", //
9587 " */\n", //
9588 "x\n", //
9589 "{{} \n", //
9590 "}\n", //
9591 )
9592 );
9593 });
9594 }
9595
9596 #[gpui::test]
9597 fn test_highlighted_ranges(cx: &mut gpui::MutableAppContext) {
9598 let buffer = MultiBuffer::build_simple(&sample_text(16, 8, 'a'), cx);
9599 populate_settings(cx);
9600 let (_, editor) = cx.add_window(Default::default(), |cx| build_editor(buffer.clone(), cx));
9601
9602 editor.update(cx, |editor, cx| {
9603 struct Type1;
9604 struct Type2;
9605
9606 let buffer = buffer.read(cx).snapshot(cx);
9607
9608 let anchor_range = |range: Range<Point>| {
9609 buffer.anchor_after(range.start)..buffer.anchor_after(range.end)
9610 };
9611
9612 editor.highlight_background::<Type1>(
9613 vec![
9614 anchor_range(Point::new(2, 1)..Point::new(2, 3)),
9615 anchor_range(Point::new(4, 2)..Point::new(4, 4)),
9616 anchor_range(Point::new(6, 3)..Point::new(6, 5)),
9617 anchor_range(Point::new(8, 4)..Point::new(8, 6)),
9618 ],
9619 Color::red(),
9620 cx,
9621 );
9622 editor.highlight_background::<Type2>(
9623 vec![
9624 anchor_range(Point::new(3, 2)..Point::new(3, 5)),
9625 anchor_range(Point::new(5, 3)..Point::new(5, 6)),
9626 anchor_range(Point::new(7, 4)..Point::new(7, 7)),
9627 anchor_range(Point::new(9, 5)..Point::new(9, 8)),
9628 ],
9629 Color::green(),
9630 cx,
9631 );
9632
9633 let snapshot = editor.snapshot(cx);
9634 let mut highlighted_ranges = editor.background_highlights_in_range(
9635 anchor_range(Point::new(3, 4)..Point::new(7, 4)),
9636 &snapshot,
9637 );
9638 // Enforce a consistent ordering based on color without relying on the ordering of the
9639 // highlight's `TypeId` which is non-deterministic.
9640 highlighted_ranges.sort_unstable_by_key(|(_, color)| *color);
9641 assert_eq!(
9642 highlighted_ranges,
9643 &[
9644 (
9645 DisplayPoint::new(3, 2)..DisplayPoint::new(3, 5),
9646 Color::green(),
9647 ),
9648 (
9649 DisplayPoint::new(5, 3)..DisplayPoint::new(5, 6),
9650 Color::green(),
9651 ),
9652 (
9653 DisplayPoint::new(4, 2)..DisplayPoint::new(4, 4),
9654 Color::red(),
9655 ),
9656 (
9657 DisplayPoint::new(6, 3)..DisplayPoint::new(6, 5),
9658 Color::red(),
9659 ),
9660 ]
9661 );
9662 assert_eq!(
9663 editor.background_highlights_in_range(
9664 anchor_range(Point::new(5, 6)..Point::new(6, 4)),
9665 &snapshot,
9666 ),
9667 &[(
9668 DisplayPoint::new(6, 3)..DisplayPoint::new(6, 5),
9669 Color::red(),
9670 )]
9671 );
9672 });
9673 }
9674
9675 #[gpui::test]
9676 fn test_following(cx: &mut gpui::MutableAppContext) {
9677 let buffer = MultiBuffer::build_simple(&sample_text(16, 8, 'a'), cx);
9678 populate_settings(cx);
9679
9680 let (_, leader) = cx.add_window(Default::default(), |cx| build_editor(buffer.clone(), cx));
9681 let (_, follower) = cx.add_window(
9682 WindowOptions {
9683 bounds: WindowBounds::Fixed(RectF::from_points(vec2f(0., 0.), vec2f(10., 80.))),
9684 ..Default::default()
9685 },
9686 |cx| build_editor(buffer.clone(), cx),
9687 );
9688
9689 let pending_update = Rc::new(RefCell::new(None));
9690 follower.update(cx, {
9691 let update = pending_update.clone();
9692 |_, cx| {
9693 cx.subscribe(&leader, move |_, leader, event, cx| {
9694 leader
9695 .read(cx)
9696 .add_event_to_update_proto(event, &mut *update.borrow_mut(), cx);
9697 })
9698 .detach();
9699 }
9700 });
9701
9702 // Update the selections only
9703 leader.update(cx, |leader, cx| {
9704 leader.select_ranges([1..1], None, cx);
9705 });
9706 follower.update(cx, |follower, cx| {
9707 follower
9708 .apply_update_proto(pending_update.borrow_mut().take().unwrap(), cx)
9709 .unwrap();
9710 });
9711 assert_eq!(follower.read(cx).selected_ranges(cx), vec![1..1]);
9712
9713 // Update the scroll position only
9714 leader.update(cx, |leader, cx| {
9715 leader.set_scroll_position(vec2f(1.5, 3.5), cx);
9716 });
9717 follower.update(cx, |follower, cx| {
9718 follower
9719 .apply_update_proto(pending_update.borrow_mut().take().unwrap(), cx)
9720 .unwrap();
9721 });
9722 assert_eq!(
9723 follower.update(cx, |follower, cx| follower.scroll_position(cx)),
9724 vec2f(1.5, 3.5)
9725 );
9726
9727 // Update the selections and scroll position
9728 leader.update(cx, |leader, cx| {
9729 leader.select_ranges([0..0], None, cx);
9730 leader.request_autoscroll(Autoscroll::Newest, cx);
9731 leader.set_scroll_position(vec2f(1.5, 3.5), cx);
9732 });
9733 follower.update(cx, |follower, cx| {
9734 let initial_scroll_position = follower.scroll_position(cx);
9735 follower
9736 .apply_update_proto(pending_update.borrow_mut().take().unwrap(), cx)
9737 .unwrap();
9738 assert_eq!(follower.scroll_position(cx), initial_scroll_position);
9739 assert!(follower.autoscroll_request.is_some());
9740 });
9741 assert_eq!(follower.read(cx).selected_ranges(cx), vec![0..0]);
9742
9743 // Creating a pending selection that precedes another selection
9744 leader.update(cx, |leader, cx| {
9745 leader.select_ranges([1..1], None, cx);
9746 leader.begin_selection(DisplayPoint::new(0, 0), true, 1, cx);
9747 });
9748 follower.update(cx, |follower, cx| {
9749 follower
9750 .apply_update_proto(pending_update.borrow_mut().take().unwrap(), cx)
9751 .unwrap();
9752 });
9753 assert_eq!(follower.read(cx).selected_ranges(cx), vec![0..0, 1..1]);
9754
9755 // Extend the pending selection so that it surrounds another selection
9756 leader.update(cx, |leader, cx| {
9757 leader.extend_selection(DisplayPoint::new(0, 2), 1, cx);
9758 });
9759 follower.update(cx, |follower, cx| {
9760 follower
9761 .apply_update_proto(pending_update.borrow_mut().take().unwrap(), cx)
9762 .unwrap();
9763 });
9764 assert_eq!(follower.read(cx).selected_ranges(cx), vec![0..2]);
9765 }
9766
9767 #[test]
9768 fn test_combine_syntax_and_fuzzy_match_highlights() {
9769 let string = "abcdefghijklmnop";
9770 let syntax_ranges = [
9771 (
9772 0..3,
9773 HighlightStyle {
9774 color: Some(Color::red()),
9775 ..Default::default()
9776 },
9777 ),
9778 (
9779 4..8,
9780 HighlightStyle {
9781 color: Some(Color::green()),
9782 ..Default::default()
9783 },
9784 ),
9785 ];
9786 let match_indices = [4, 6, 7, 8];
9787 assert_eq!(
9788 combine_syntax_and_fuzzy_match_highlights(
9789 &string,
9790 Default::default(),
9791 syntax_ranges.into_iter(),
9792 &match_indices,
9793 ),
9794 &[
9795 (
9796 0..3,
9797 HighlightStyle {
9798 color: Some(Color::red()),
9799 ..Default::default()
9800 },
9801 ),
9802 (
9803 4..5,
9804 HighlightStyle {
9805 color: Some(Color::green()),
9806 weight: Some(fonts::Weight::BOLD),
9807 ..Default::default()
9808 },
9809 ),
9810 (
9811 5..6,
9812 HighlightStyle {
9813 color: Some(Color::green()),
9814 ..Default::default()
9815 },
9816 ),
9817 (
9818 6..8,
9819 HighlightStyle {
9820 color: Some(Color::green()),
9821 weight: Some(fonts::Weight::BOLD),
9822 ..Default::default()
9823 },
9824 ),
9825 (
9826 8..9,
9827 HighlightStyle {
9828 weight: Some(fonts::Weight::BOLD),
9829 ..Default::default()
9830 },
9831 ),
9832 ]
9833 );
9834 }
9835
9836 fn empty_range(row: usize, column: usize) -> Range<DisplayPoint> {
9837 let point = DisplayPoint::new(row as u32, column as u32);
9838 point..point
9839 }
9840
9841 fn build_editor(buffer: ModelHandle<MultiBuffer>, cx: &mut ViewContext<Editor>) -> Editor {
9842 Editor::new(EditorMode::Full, buffer, None, None, cx)
9843 }
9844
9845 fn populate_settings(cx: &mut gpui::MutableAppContext) {
9846 let settings = Settings::test(cx);
9847 cx.set_global(settings);
9848 }
9849
9850 fn assert_selection_ranges(
9851 marked_text: &str,
9852 selection_marker_pairs: Vec<(char, char)>,
9853 view: &mut Editor,
9854 cx: &mut ViewContext<Editor>,
9855 ) {
9856 let snapshot = view.snapshot(cx).display_snapshot;
9857 let mut marker_chars = Vec::new();
9858 for (start, end) in selection_marker_pairs.iter() {
9859 marker_chars.push(*start);
9860 marker_chars.push(*end);
9861 }
9862 let (_, markers) = marked_text_by(marked_text, marker_chars);
9863 let asserted_ranges: Vec<Range<DisplayPoint>> = selection_marker_pairs
9864 .iter()
9865 .map(|(start, end)| {
9866 let start = markers.get(start).unwrap()[0].to_display_point(&snapshot);
9867 let end = markers.get(end).unwrap()[0].to_display_point(&snapshot);
9868 start..end
9869 })
9870 .collect();
9871 assert_eq!(
9872 view.selected_display_ranges(cx),
9873 &asserted_ranges[..],
9874 "Assert selections are {}",
9875 marked_text
9876 );
9877 }
9878}
9879
9880trait RangeExt<T> {
9881 fn sorted(&self) -> Range<T>;
9882 fn to_inclusive(&self) -> RangeInclusive<T>;
9883}
9884
9885impl<T: Ord + Clone> RangeExt<T> for Range<T> {
9886 fn sorted(&self) -> Self {
9887 cmp::min(&self.start, &self.end).clone()..cmp::max(&self.start, &self.end).clone()
9888 }
9889
9890 fn to_inclusive(&self) -> RangeInclusive<T> {
9891 self.start.clone()..=self.end.clone()
9892 }
9893}