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 clock::ReplicaId;
12use collections::{HashMap, HashSet};
13pub use display_map::DisplayPoint;
14use display_map::*;
15pub use element::*;
16use gpui::{
17 action,
18 elements::*,
19 fonts::TextStyle,
20 geometry::vector::{vec2f, Vector2F},
21 keymap::Binding,
22 text_layout, AppContext, ClipboardItem, Element, ElementBox, Entity, ModelHandle,
23 MutableAppContext, RenderContext, View, ViewContext, WeakModelHandle, WeakViewHandle,
24};
25use items::BufferItemHandle;
26use itertools::Itertools as _;
27use language::{
28 BracketPair, Buffer, Diagnostic, DiagnosticSeverity, Language, Point, Selection, SelectionGoal,
29 TransactionId,
30};
31pub use multi_buffer::{Anchor, ExcerptId, ExcerptProperties, MultiBuffer};
32use multi_buffer::{AnchorRangeExt, MultiBufferChunks, MultiBufferSnapshot, ToOffset, ToPoint};
33use postage::watch;
34use serde::{Deserialize, Serialize};
35use smallvec::SmallVec;
36use smol::Timer;
37use std::{
38 cmp,
39 iter::{self, FromIterator},
40 mem,
41 ops::{Deref, Range, RangeInclusive, Sub},
42 sync::Arc,
43 time::{Duration, Instant},
44};
45use sum_tree::Bias;
46use text::rope::TextDimension;
47use theme::{DiagnosticStyle, EditorStyle};
48use util::post_inc;
49use workspace::{EntryOpener, Workspace};
50
51const CURSOR_BLINK_INTERVAL: Duration = Duration::from_millis(500);
52const MAX_LINE_LEN: usize = 1024;
53
54action!(Cancel);
55action!(Backspace);
56action!(Delete);
57action!(Input, String);
58action!(Newline);
59action!(Tab);
60action!(Outdent);
61action!(DeleteLine);
62action!(DeleteToPreviousWordBoundary);
63action!(DeleteToNextWordBoundary);
64action!(DeleteToBeginningOfLine);
65action!(DeleteToEndOfLine);
66action!(CutToEndOfLine);
67action!(DuplicateLine);
68action!(MoveLineUp);
69action!(MoveLineDown);
70action!(Cut);
71action!(Copy);
72action!(Paste);
73action!(Undo);
74action!(Redo);
75action!(MoveUp);
76action!(MoveDown);
77action!(MoveLeft);
78action!(MoveRight);
79action!(MoveToPreviousWordBoundary);
80action!(MoveToNextWordBoundary);
81action!(MoveToBeginningOfLine);
82action!(MoveToEndOfLine);
83action!(MoveToBeginning);
84action!(MoveToEnd);
85action!(SelectUp);
86action!(SelectDown);
87action!(SelectLeft);
88action!(SelectRight);
89action!(SelectToPreviousWordBoundary);
90action!(SelectToNextWordBoundary);
91action!(SelectToBeginningOfLine, bool);
92action!(SelectToEndOfLine);
93action!(SelectToBeginning);
94action!(SelectToEnd);
95action!(SelectAll);
96action!(SelectLine);
97action!(SplitSelectionIntoLines);
98action!(AddSelectionAbove);
99action!(AddSelectionBelow);
100action!(SelectNext, bool);
101action!(ToggleComments);
102action!(SelectLargerSyntaxNode);
103action!(SelectSmallerSyntaxNode);
104action!(MoveToEnclosingBracket);
105action!(ShowNextDiagnostic);
106action!(PageUp);
107action!(PageDown);
108action!(Fold);
109action!(Unfold);
110action!(FoldSelectedRanges);
111action!(Scroll, Vector2F);
112action!(Select, SelectPhase);
113
114pub fn init(cx: &mut MutableAppContext, entry_openers: &mut Vec<Box<dyn EntryOpener>>) {
115 entry_openers.push(Box::new(items::BufferOpener));
116 cx.add_bindings(vec![
117 Binding::new("escape", Cancel, Some("Editor")),
118 Binding::new("backspace", Backspace, Some("Editor")),
119 Binding::new("ctrl-h", Backspace, Some("Editor")),
120 Binding::new("delete", Delete, Some("Editor")),
121 Binding::new("ctrl-d", Delete, Some("Editor")),
122 Binding::new("enter", Newline, Some("Editor && mode == full")),
123 Binding::new(
124 "alt-enter",
125 Input("\n".into()),
126 Some("Editor && mode == auto_height"),
127 ),
128 Binding::new("tab", Tab, Some("Editor")),
129 Binding::new("shift-tab", Outdent, Some("Editor")),
130 Binding::new("ctrl-shift-K", DeleteLine, Some("Editor")),
131 Binding::new(
132 "alt-backspace",
133 DeleteToPreviousWordBoundary,
134 Some("Editor"),
135 ),
136 Binding::new("alt-h", DeleteToPreviousWordBoundary, Some("Editor")),
137 Binding::new("alt-delete", DeleteToNextWordBoundary, Some("Editor")),
138 Binding::new("alt-d", DeleteToNextWordBoundary, Some("Editor")),
139 Binding::new("cmd-backspace", DeleteToBeginningOfLine, Some("Editor")),
140 Binding::new("cmd-delete", DeleteToEndOfLine, Some("Editor")),
141 Binding::new("ctrl-k", CutToEndOfLine, Some("Editor")),
142 Binding::new("cmd-shift-D", DuplicateLine, Some("Editor")),
143 Binding::new("ctrl-cmd-up", MoveLineUp, Some("Editor")),
144 Binding::new("ctrl-cmd-down", MoveLineDown, Some("Editor")),
145 Binding::new("cmd-x", Cut, Some("Editor")),
146 Binding::new("cmd-c", Copy, Some("Editor")),
147 Binding::new("cmd-v", Paste, Some("Editor")),
148 Binding::new("cmd-z", Undo, Some("Editor")),
149 Binding::new("cmd-shift-Z", Redo, Some("Editor")),
150 Binding::new("up", MoveUp, Some("Editor")),
151 Binding::new("down", MoveDown, Some("Editor")),
152 Binding::new("left", MoveLeft, Some("Editor")),
153 Binding::new("right", MoveRight, Some("Editor")),
154 Binding::new("ctrl-p", MoveUp, Some("Editor")),
155 Binding::new("ctrl-n", MoveDown, Some("Editor")),
156 Binding::new("ctrl-b", MoveLeft, Some("Editor")),
157 Binding::new("ctrl-f", MoveRight, Some("Editor")),
158 Binding::new("alt-left", MoveToPreviousWordBoundary, Some("Editor")),
159 Binding::new("alt-b", MoveToPreviousWordBoundary, Some("Editor")),
160 Binding::new("alt-right", MoveToNextWordBoundary, Some("Editor")),
161 Binding::new("alt-f", MoveToNextWordBoundary, Some("Editor")),
162 Binding::new("cmd-left", MoveToBeginningOfLine, Some("Editor")),
163 Binding::new("ctrl-a", MoveToBeginningOfLine, Some("Editor")),
164 Binding::new("cmd-right", MoveToEndOfLine, Some("Editor")),
165 Binding::new("ctrl-e", MoveToEndOfLine, Some("Editor")),
166 Binding::new("cmd-up", MoveToBeginning, Some("Editor")),
167 Binding::new("cmd-down", MoveToEnd, Some("Editor")),
168 Binding::new("shift-up", SelectUp, Some("Editor")),
169 Binding::new("ctrl-shift-P", SelectUp, Some("Editor")),
170 Binding::new("shift-down", SelectDown, Some("Editor")),
171 Binding::new("ctrl-shift-N", SelectDown, Some("Editor")),
172 Binding::new("shift-left", SelectLeft, Some("Editor")),
173 Binding::new("ctrl-shift-B", SelectLeft, Some("Editor")),
174 Binding::new("shift-right", SelectRight, Some("Editor")),
175 Binding::new("ctrl-shift-F", SelectRight, Some("Editor")),
176 Binding::new(
177 "alt-shift-left",
178 SelectToPreviousWordBoundary,
179 Some("Editor"),
180 ),
181 Binding::new("alt-shift-B", SelectToPreviousWordBoundary, Some("Editor")),
182 Binding::new("alt-shift-right", SelectToNextWordBoundary, Some("Editor")),
183 Binding::new("alt-shift-F", SelectToNextWordBoundary, Some("Editor")),
184 Binding::new(
185 "cmd-shift-left",
186 SelectToBeginningOfLine(true),
187 Some("Editor"),
188 ),
189 Binding::new(
190 "ctrl-shift-A",
191 SelectToBeginningOfLine(true),
192 Some("Editor"),
193 ),
194 Binding::new("cmd-shift-right", SelectToEndOfLine, Some("Editor")),
195 Binding::new("ctrl-shift-E", SelectToEndOfLine, Some("Editor")),
196 Binding::new("cmd-shift-up", SelectToBeginning, Some("Editor")),
197 Binding::new("cmd-shift-down", SelectToEnd, Some("Editor")),
198 Binding::new("cmd-a", SelectAll, Some("Editor")),
199 Binding::new("cmd-l", SelectLine, Some("Editor")),
200 Binding::new("cmd-shift-L", SplitSelectionIntoLines, Some("Editor")),
201 Binding::new("cmd-alt-up", AddSelectionAbove, Some("Editor")),
202 Binding::new("cmd-ctrl-p", AddSelectionAbove, Some("Editor")),
203 Binding::new("cmd-alt-down", AddSelectionBelow, Some("Editor")),
204 Binding::new("cmd-ctrl-n", AddSelectionBelow, Some("Editor")),
205 Binding::new("cmd-d", SelectNext(false), Some("Editor")),
206 Binding::new("cmd-k cmd-d", SelectNext(true), Some("Editor")),
207 Binding::new("cmd-/", ToggleComments, Some("Editor")),
208 Binding::new("alt-up", SelectLargerSyntaxNode, Some("Editor")),
209 Binding::new("ctrl-w", SelectLargerSyntaxNode, Some("Editor")),
210 Binding::new("alt-down", SelectSmallerSyntaxNode, Some("Editor")),
211 Binding::new("ctrl-shift-W", SelectSmallerSyntaxNode, Some("Editor")),
212 Binding::new("f8", ShowNextDiagnostic, Some("Editor")),
213 Binding::new("ctrl-m", MoveToEnclosingBracket, Some("Editor")),
214 Binding::new("pageup", PageUp, Some("Editor")),
215 Binding::new("pagedown", PageDown, Some("Editor")),
216 Binding::new("alt-cmd-[", Fold, Some("Editor")),
217 Binding::new("alt-cmd-]", Unfold, Some("Editor")),
218 Binding::new("alt-cmd-f", FoldSelectedRanges, Some("Editor")),
219 ]);
220
221 cx.add_action(Editor::open_new);
222 cx.add_action(|this: &mut Editor, action: &Scroll, cx| this.set_scroll_position(action.0, cx));
223 cx.add_action(Editor::select);
224 cx.add_action(Editor::cancel);
225 cx.add_action(Editor::handle_input);
226 cx.add_action(Editor::newline);
227 cx.add_action(Editor::backspace);
228 cx.add_action(Editor::delete);
229 cx.add_action(Editor::tab);
230 cx.add_action(Editor::outdent);
231 cx.add_action(Editor::delete_line);
232 cx.add_action(Editor::delete_to_previous_word_boundary);
233 cx.add_action(Editor::delete_to_next_word_boundary);
234 cx.add_action(Editor::delete_to_beginning_of_line);
235 cx.add_action(Editor::delete_to_end_of_line);
236 cx.add_action(Editor::cut_to_end_of_line);
237 cx.add_action(Editor::duplicate_line);
238 cx.add_action(Editor::move_line_up);
239 cx.add_action(Editor::move_line_down);
240 cx.add_action(Editor::cut);
241 cx.add_action(Editor::copy);
242 cx.add_action(Editor::paste);
243 cx.add_action(Editor::undo);
244 cx.add_action(Editor::redo);
245 cx.add_action(Editor::move_up);
246 cx.add_action(Editor::move_down);
247 cx.add_action(Editor::move_left);
248 cx.add_action(Editor::move_right);
249 cx.add_action(Editor::move_to_previous_word_boundary);
250 cx.add_action(Editor::move_to_next_word_boundary);
251 cx.add_action(Editor::move_to_beginning_of_line);
252 cx.add_action(Editor::move_to_end_of_line);
253 cx.add_action(Editor::move_to_beginning);
254 cx.add_action(Editor::move_to_end);
255 cx.add_action(Editor::select_up);
256 cx.add_action(Editor::select_down);
257 cx.add_action(Editor::select_left);
258 cx.add_action(Editor::select_right);
259 cx.add_action(Editor::select_to_previous_word_boundary);
260 cx.add_action(Editor::select_to_next_word_boundary);
261 cx.add_action(Editor::select_to_beginning_of_line);
262 cx.add_action(Editor::select_to_end_of_line);
263 cx.add_action(Editor::select_to_beginning);
264 cx.add_action(Editor::select_to_end);
265 cx.add_action(Editor::select_all);
266 cx.add_action(Editor::select_line);
267 cx.add_action(Editor::split_selection_into_lines);
268 cx.add_action(Editor::add_selection_above);
269 cx.add_action(Editor::add_selection_below);
270 cx.add_action(Editor::select_next);
271 cx.add_action(Editor::toggle_comments);
272 cx.add_action(Editor::select_larger_syntax_node);
273 cx.add_action(Editor::select_smaller_syntax_node);
274 cx.add_action(Editor::move_to_enclosing_bracket);
275 cx.add_action(Editor::show_next_diagnostic);
276 cx.add_action(Editor::page_up);
277 cx.add_action(Editor::page_down);
278 cx.add_action(Editor::fold);
279 cx.add_action(Editor::unfold);
280 cx.add_action(Editor::fold_selected_ranges);
281}
282
283trait SelectionExt {
284 fn offset_range(&self, buffer: &MultiBufferSnapshot) -> Range<usize>;
285 fn point_range(&self, buffer: &MultiBufferSnapshot) -> Range<Point>;
286 fn display_range(&self, map: &DisplaySnapshot) -> Range<DisplayPoint>;
287 fn spanned_rows(&self, include_end_if_at_line_start: bool, map: &DisplaySnapshot)
288 -> Range<u32>;
289}
290
291#[derive(Clone, Debug)]
292pub enum SelectPhase {
293 Begin {
294 position: DisplayPoint,
295 add: bool,
296 click_count: usize,
297 },
298 BeginColumnar {
299 position: DisplayPoint,
300 overshoot: u32,
301 },
302 Extend {
303 position: DisplayPoint,
304 click_count: usize,
305 },
306 Update {
307 position: DisplayPoint,
308 overshoot: u32,
309 scroll_position: Vector2F,
310 },
311 End,
312}
313
314#[derive(Clone, Debug)]
315enum SelectMode {
316 Character,
317 Word(Range<Anchor>),
318 Line(Range<Anchor>),
319 All,
320}
321
322#[derive(PartialEq, Eq)]
323pub enum Autoscroll {
324 Fit,
325 Center,
326 Newest,
327}
328
329#[derive(Copy, Clone, PartialEq, Eq)]
330pub enum EditorMode {
331 SingleLine,
332 AutoHeight { max_lines: usize },
333 Full,
334}
335
336#[derive(Clone)]
337pub struct EditorSettings {
338 pub tab_size: usize,
339 pub soft_wrap: SoftWrap,
340 pub style: EditorStyle,
341}
342
343#[derive(Clone)]
344pub enum SoftWrap {
345 None,
346 EditorWidth,
347 Column(u32),
348}
349
350pub type BuildSettings = Arc<dyn 'static + Send + Sync + Fn(&AppContext) -> EditorSettings>;
351
352pub struct Editor {
353 handle: WeakViewHandle<Self>,
354 buffer: ModelHandle<MultiBuffer>,
355 display_map: ModelHandle<DisplayMap>,
356 next_selection_id: usize,
357 selections: Arc<[Selection<Anchor>]>,
358 pending_selection: Option<PendingSelection>,
359 columnar_selection_tail: Option<Anchor>,
360 add_selections_state: Option<AddSelectionsState>,
361 select_next_state: Option<SelectNextState>,
362 selection_history:
363 HashMap<TransactionId, (Arc<[Selection<Anchor>]>, Option<Arc<[Selection<Anchor>]>>)>,
364 autoclose_stack: Vec<BracketPairState>,
365 select_larger_syntax_node_stack: Vec<Box<[Selection<usize>]>>,
366 active_diagnostics: Option<ActiveDiagnosticGroup>,
367 scroll_position: Vector2F,
368 scroll_top_anchor: Anchor,
369 autoscroll_request: Option<Autoscroll>,
370 build_settings: BuildSettings,
371 focused: bool,
372 show_local_cursors: bool,
373 blink_epoch: usize,
374 blinking_paused: bool,
375 mode: EditorMode,
376 placeholder_text: Option<Arc<str>>,
377 highlighted_row: Option<u32>,
378}
379
380pub struct EditorSnapshot {
381 pub mode: EditorMode,
382 pub display_snapshot: DisplaySnapshot,
383 pub placeholder_text: Option<Arc<str>>,
384 is_focused: bool,
385 scroll_position: Vector2F,
386 scroll_top_anchor: Anchor,
387}
388
389struct PendingSelection {
390 selection: Selection<Anchor>,
391 mode: SelectMode,
392}
393
394struct AddSelectionsState {
395 above: bool,
396 stack: Vec<usize>,
397}
398
399struct SelectNextState {
400 query: AhoCorasick,
401 wordwise: bool,
402 done: bool,
403}
404
405#[derive(Debug)]
406struct BracketPairState {
407 ranges: Vec<Range<Anchor>>,
408 pair: BracketPair,
409}
410
411#[derive(Debug)]
412struct ActiveDiagnosticGroup {
413 primary_range: Range<Anchor>,
414 primary_message: String,
415 blocks: HashMap<BlockId, Diagnostic>,
416 is_valid: bool,
417}
418
419#[derive(Serialize, Deserialize)]
420struct ClipboardSelection {
421 len: usize,
422 is_entire_line: bool,
423}
424
425impl Editor {
426 pub fn single_line(build_settings: BuildSettings, cx: &mut ViewContext<Self>) -> Self {
427 let buffer = cx.add_model(|cx| Buffer::new(0, String::new(), cx));
428 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
429 let mut view = Self::for_buffer(buffer, build_settings, cx);
430 view.mode = EditorMode::SingleLine;
431 view
432 }
433
434 pub fn auto_height(
435 max_lines: usize,
436 build_settings: BuildSettings,
437 cx: &mut ViewContext<Self>,
438 ) -> Self {
439 let buffer = cx.add_model(|cx| Buffer::new(0, String::new(), cx));
440 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
441 let mut view = Self::for_buffer(buffer, build_settings, cx);
442 view.mode = EditorMode::AutoHeight { max_lines };
443 view
444 }
445
446 pub fn for_buffer(
447 buffer: ModelHandle<MultiBuffer>,
448 build_settings: BuildSettings,
449 cx: &mut ViewContext<Self>,
450 ) -> Self {
451 Self::new(buffer, build_settings, cx)
452 }
453
454 pub fn clone(&self, cx: &mut ViewContext<Self>) -> Self {
455 let mut clone = Self::new(self.buffer.clone(), self.build_settings.clone(), cx);
456 clone.scroll_position = self.scroll_position;
457 clone.scroll_top_anchor = self.scroll_top_anchor.clone();
458 clone
459 }
460
461 pub fn new(
462 buffer: ModelHandle<MultiBuffer>,
463 build_settings: BuildSettings,
464 cx: &mut ViewContext<Self>,
465 ) -> Self {
466 let settings = build_settings(cx);
467 let display_map = cx.add_model(|cx| {
468 DisplayMap::new(
469 buffer.clone(),
470 settings.tab_size,
471 settings.style.text.font_id,
472 settings.style.text.font_size,
473 None,
474 cx,
475 )
476 });
477 cx.observe(&buffer, Self::on_buffer_changed).detach();
478 cx.subscribe(&buffer, Self::on_buffer_event).detach();
479 cx.observe(&display_map, Self::on_display_map_changed)
480 .detach();
481
482 let mut this = Self {
483 handle: cx.weak_handle(),
484 buffer,
485 display_map,
486 selections: Arc::from([]),
487 pending_selection: None,
488 columnar_selection_tail: None,
489 next_selection_id: 0,
490 add_selections_state: None,
491 select_next_state: None,
492 selection_history: Default::default(),
493 autoclose_stack: Default::default(),
494 select_larger_syntax_node_stack: Vec::new(),
495 active_diagnostics: None,
496 build_settings,
497 scroll_position: Vector2F::zero(),
498 scroll_top_anchor: Anchor::min(),
499 autoscroll_request: None,
500 focused: false,
501 show_local_cursors: false,
502 blink_epoch: 0,
503 blinking_paused: false,
504 mode: EditorMode::Full,
505 placeholder_text: None,
506 highlighted_row: None,
507 };
508 let selection = Selection {
509 id: post_inc(&mut this.next_selection_id),
510 start: 0,
511 end: 0,
512 reversed: false,
513 goal: SelectionGoal::None,
514 };
515 this.update_selections(vec![selection], None, cx);
516 this
517 }
518
519 pub fn open_new(
520 workspace: &mut Workspace,
521 _: &workspace::OpenNew,
522 cx: &mut ViewContext<Workspace>,
523 ) {
524 let buffer = cx.add_model(|cx| {
525 Buffer::new(0, "", cx).with_language(Some(language::PLAIN_TEXT.clone()), None, cx)
526 });
527 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
528 workspace.add_item(BufferItemHandle(buffer), cx);
529 }
530
531 pub fn replica_id(&self, cx: &AppContext) -> ReplicaId {
532 self.buffer.read(cx).replica_id()
533 }
534
535 pub fn buffer(&self) -> &ModelHandle<MultiBuffer> {
536 &self.buffer
537 }
538
539 pub fn snapshot(&mut self, cx: &mut MutableAppContext) -> EditorSnapshot {
540 EditorSnapshot {
541 mode: self.mode,
542 display_snapshot: self.display_map.update(cx, |map, cx| map.snapshot(cx)),
543 scroll_position: self.scroll_position,
544 scroll_top_anchor: self.scroll_top_anchor.clone(),
545 placeholder_text: self.placeholder_text.clone(),
546 is_focused: self
547 .handle
548 .upgrade(cx)
549 .map_or(false, |handle| handle.is_focused(cx)),
550 }
551 }
552
553 pub fn language<'a>(&self, cx: &'a AppContext) -> Option<&'a Arc<Language>> {
554 self.buffer.read(cx).language(cx)
555 }
556
557 pub fn set_placeholder_text(
558 &mut self,
559 placeholder_text: impl Into<Arc<str>>,
560 cx: &mut ViewContext<Self>,
561 ) {
562 self.placeholder_text = Some(placeholder_text.into());
563 cx.notify();
564 }
565
566 pub fn set_scroll_position(&mut self, scroll_position: Vector2F, cx: &mut ViewContext<Self>) {
567 let map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
568 let scroll_top_buffer_offset =
569 DisplayPoint::new(scroll_position.y() as u32, 0).to_offset(&map, Bias::Right);
570 self.scroll_top_anchor = map
571 .buffer_snapshot
572 .anchor_at(scroll_top_buffer_offset, Bias::Right);
573 self.scroll_position = vec2f(
574 scroll_position.x(),
575 scroll_position.y() - self.scroll_top_anchor.to_display_point(&map).row() as f32,
576 );
577
578 cx.notify();
579 }
580
581 pub fn scroll_position(&self, cx: &mut ViewContext<Self>) -> Vector2F {
582 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
583 compute_scroll_position(&display_map, self.scroll_position, &self.scroll_top_anchor)
584 }
585
586 pub fn clamp_scroll_left(&mut self, max: f32) -> bool {
587 if max < self.scroll_position.x() {
588 self.scroll_position.set_x(max);
589 true
590 } else {
591 false
592 }
593 }
594
595 pub fn autoscroll_vertically(
596 &mut self,
597 viewport_height: f32,
598 line_height: f32,
599 cx: &mut ViewContext<Self>,
600 ) -> bool {
601 let visible_lines = viewport_height / line_height;
602 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
603 let mut scroll_position =
604 compute_scroll_position(&display_map, self.scroll_position, &self.scroll_top_anchor);
605 let max_scroll_top = if matches!(self.mode, EditorMode::AutoHeight { .. }) {
606 (display_map.max_point().row() as f32 - visible_lines + 1.).max(0.)
607 } else {
608 display_map.max_point().row().saturating_sub(1) as f32
609 };
610 if scroll_position.y() > max_scroll_top {
611 scroll_position.set_y(max_scroll_top);
612 self.set_scroll_position(scroll_position, cx);
613 }
614
615 let autoscroll = if let Some(autoscroll) = self.autoscroll_request.take() {
616 autoscroll
617 } else {
618 return false;
619 };
620
621 let first_cursor_top;
622 let last_cursor_bottom;
623 if autoscroll == Autoscroll::Newest {
624 let newest_selection = self.newest_selection::<Point>(&display_map.buffer_snapshot);
625 first_cursor_top = newest_selection.head().to_display_point(&display_map).row() as f32;
626 last_cursor_bottom = first_cursor_top + 1.;
627 } else {
628 let selections = self.local_selections::<Point>(cx);
629 first_cursor_top = selections
630 .first()
631 .unwrap()
632 .head()
633 .to_display_point(&display_map)
634 .row() as f32;
635 last_cursor_bottom = selections
636 .last()
637 .unwrap()
638 .head()
639 .to_display_point(&display_map)
640 .row() as f32
641 + 1.0;
642 }
643
644 let margin = if matches!(self.mode, EditorMode::AutoHeight { .. }) {
645 0.
646 } else {
647 ((visible_lines - (last_cursor_bottom - first_cursor_top)) / 2.0).floor()
648 };
649 if margin < 0.0 {
650 return false;
651 }
652
653 match autoscroll {
654 Autoscroll::Fit | Autoscroll::Newest => {
655 let margin = margin.min(3.0);
656 let target_top = (first_cursor_top - margin).max(0.0);
657 let target_bottom = last_cursor_bottom + margin;
658 let start_row = scroll_position.y();
659 let end_row = start_row + visible_lines;
660
661 if target_top < start_row {
662 scroll_position.set_y(target_top);
663 self.set_scroll_position(scroll_position, cx);
664 } else if target_bottom >= end_row {
665 scroll_position.set_y(target_bottom - visible_lines);
666 self.set_scroll_position(scroll_position, cx);
667 }
668 }
669 Autoscroll::Center => {
670 scroll_position.set_y((first_cursor_top - margin).max(0.0));
671 self.set_scroll_position(scroll_position, cx);
672 }
673 }
674
675 true
676 }
677
678 pub fn autoscroll_horizontally(
679 &mut self,
680 start_row: u32,
681 viewport_width: f32,
682 scroll_width: f32,
683 max_glyph_width: f32,
684 layouts: &[text_layout::Line],
685 cx: &mut ViewContext<Self>,
686 ) -> bool {
687 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
688 let selections = self.local_selections::<Point>(cx);
689 let mut target_left = std::f32::INFINITY;
690 let mut target_right = 0.0_f32;
691 for selection in selections {
692 let head = selection.head().to_display_point(&display_map);
693 if head.row() >= start_row && head.row() < start_row + layouts.len() as u32 {
694 let start_column = head.column().saturating_sub(3);
695 let end_column = cmp::min(display_map.line_len(head.row()), head.column() + 3);
696 target_left = target_left.min(
697 layouts[(head.row() - start_row) as usize].x_for_index(start_column as usize),
698 );
699 target_right = target_right.max(
700 layouts[(head.row() - start_row) as usize].x_for_index(end_column as usize)
701 + max_glyph_width,
702 );
703 }
704 }
705 target_right = target_right.min(scroll_width);
706
707 if target_right - target_left > viewport_width {
708 return false;
709 }
710
711 let scroll_left = self.scroll_position.x() * max_glyph_width;
712 let scroll_right = scroll_left + viewport_width;
713
714 if target_left < scroll_left {
715 self.scroll_position.set_x(target_left / max_glyph_width);
716 true
717 } else if target_right > scroll_right {
718 self.scroll_position
719 .set_x((target_right - viewport_width) / max_glyph_width);
720 true
721 } else {
722 false
723 }
724 }
725
726 fn select(&mut self, Select(phase): &Select, cx: &mut ViewContext<Self>) {
727 match phase {
728 SelectPhase::Begin {
729 position,
730 add,
731 click_count,
732 } => self.begin_selection(*position, *add, *click_count, cx),
733 SelectPhase::BeginColumnar {
734 position,
735 overshoot,
736 } => self.begin_columnar_selection(*position, *overshoot, cx),
737 SelectPhase::Extend {
738 position,
739 click_count,
740 } => self.extend_selection(*position, *click_count, cx),
741 SelectPhase::Update {
742 position,
743 overshoot,
744 scroll_position,
745 } => self.update_selection(*position, *overshoot, *scroll_position, cx),
746 SelectPhase::End => self.end_selection(cx),
747 }
748 }
749
750 fn extend_selection(
751 &mut self,
752 position: DisplayPoint,
753 click_count: usize,
754 cx: &mut ViewContext<Self>,
755 ) {
756 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
757 let tail = self
758 .newest_selection::<usize>(&display_map.buffer_snapshot)
759 .tail();
760 self.begin_selection(position, false, click_count, cx);
761
762 let position = position.to_offset(&display_map, Bias::Left);
763 let tail_anchor = display_map.buffer_snapshot.anchor_before(tail);
764 let pending = self.pending_selection.as_mut().unwrap();
765
766 if position >= tail {
767 pending.selection.start = tail_anchor.clone();
768 } else {
769 pending.selection.end = tail_anchor.clone();
770 pending.selection.reversed = true;
771 }
772
773 match &mut pending.mode {
774 SelectMode::Word(range) | SelectMode::Line(range) => {
775 *range = tail_anchor.clone()..tail_anchor
776 }
777 _ => {}
778 }
779 }
780
781 fn begin_selection(
782 &mut self,
783 position: DisplayPoint,
784 add: bool,
785 click_count: usize,
786 cx: &mut ViewContext<Self>,
787 ) {
788 if !self.focused {
789 cx.focus_self();
790 cx.emit(Event::Activate);
791 }
792
793 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
794 let buffer = &display_map.buffer_snapshot;
795 let start;
796 let end;
797 let mode;
798 match click_count {
799 1 => {
800 start = buffer.anchor_before(position.to_point(&display_map));
801 end = start.clone();
802 mode = SelectMode::Character;
803 }
804 2 => {
805 let range = movement::surrounding_word(&display_map, position);
806 start = buffer.anchor_before(range.start.to_point(&display_map));
807 end = buffer.anchor_before(range.end.to_point(&display_map));
808 mode = SelectMode::Word(start.clone()..end.clone());
809 }
810 3 => {
811 let position = display_map.clip_point(position, Bias::Left);
812 let line_start = movement::line_beginning(&display_map, position, false);
813 let mut next_line_start = line_start.clone();
814 *next_line_start.row_mut() += 1;
815 *next_line_start.column_mut() = 0;
816 next_line_start = display_map.clip_point(next_line_start, Bias::Right);
817
818 start = buffer.anchor_before(line_start.to_point(&display_map));
819 end = buffer.anchor_before(next_line_start.to_point(&display_map));
820 mode = SelectMode::Line(start.clone()..end.clone());
821 }
822 _ => {
823 start = buffer.anchor_before(0);
824 end = buffer.anchor_before(buffer.len());
825 mode = SelectMode::All;
826 }
827 }
828
829 let selection = Selection {
830 id: post_inc(&mut self.next_selection_id),
831 start,
832 end,
833 reversed: false,
834 goal: SelectionGoal::None,
835 };
836
837 if !add {
838 self.update_selections::<usize>(Vec::new(), None, cx);
839 } else if click_count > 1 {
840 // Remove the newest selection since it was only added as part of this multi-click.
841 let newest_selection = self.newest_selection::<usize>(buffer);
842 let mut selections = self.local_selections(cx);
843 selections.retain(|selection| selection.id != newest_selection.id);
844 self.update_selections::<usize>(selections, None, cx)
845 }
846
847 self.pending_selection = Some(PendingSelection { selection, mode });
848
849 cx.notify();
850 }
851
852 fn begin_columnar_selection(
853 &mut self,
854 position: DisplayPoint,
855 overshoot: u32,
856 cx: &mut ViewContext<Self>,
857 ) {
858 if !self.focused {
859 cx.focus_self();
860 cx.emit(Event::Activate);
861 }
862
863 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
864 let tail = self
865 .newest_selection::<Point>(&display_map.buffer_snapshot)
866 .tail();
867 self.columnar_selection_tail = Some(display_map.buffer_snapshot.anchor_before(tail));
868
869 self.select_columns(
870 tail.to_display_point(&display_map),
871 position,
872 overshoot,
873 &display_map,
874 cx,
875 );
876 }
877
878 fn update_selection(
879 &mut self,
880 position: DisplayPoint,
881 overshoot: u32,
882 scroll_position: Vector2F,
883 cx: &mut ViewContext<Self>,
884 ) {
885 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
886
887 if let Some(tail) = self.columnar_selection_tail.as_ref() {
888 let tail = tail.to_display_point(&display_map);
889 self.select_columns(tail, position, overshoot, &display_map, cx);
890 } else if let Some(PendingSelection { selection, mode }) = self.pending_selection.as_mut() {
891 let buffer = self.buffer.read(cx).snapshot(cx);
892 let head;
893 let tail;
894 match mode {
895 SelectMode::Character => {
896 head = position.to_point(&display_map);
897 tail = selection.tail().to_point(&buffer);
898 }
899 SelectMode::Word(original_range) => {
900 let original_display_range = original_range.start.to_display_point(&display_map)
901 ..original_range.end.to_display_point(&display_map);
902 let original_buffer_range = original_display_range.start.to_point(&display_map)
903 ..original_display_range.end.to_point(&display_map);
904 if movement::is_inside_word(&display_map, position)
905 || original_display_range.contains(&position)
906 {
907 let word_range = movement::surrounding_word(&display_map, position);
908 if word_range.start < original_display_range.start {
909 head = word_range.start.to_point(&display_map);
910 } else {
911 head = word_range.end.to_point(&display_map);
912 }
913 } else {
914 head = position.to_point(&display_map);
915 }
916
917 if head <= original_buffer_range.start {
918 tail = original_buffer_range.end;
919 } else {
920 tail = original_buffer_range.start;
921 }
922 }
923 SelectMode::Line(original_range) => {
924 let original_display_range = original_range.start.to_display_point(&display_map)
925 ..original_range.end.to_display_point(&display_map);
926 let original_buffer_range = original_display_range.start.to_point(&display_map)
927 ..original_display_range.end.to_point(&display_map);
928 let line_start = movement::line_beginning(&display_map, position, false);
929 let mut next_line_start = line_start.clone();
930 *next_line_start.row_mut() += 1;
931 *next_line_start.column_mut() = 0;
932 next_line_start = display_map.clip_point(next_line_start, Bias::Right);
933
934 if line_start < original_display_range.start {
935 head = line_start.to_point(&display_map);
936 } else {
937 head = next_line_start.to_point(&display_map);
938 }
939
940 if head <= original_buffer_range.start {
941 tail = original_buffer_range.end;
942 } else {
943 tail = original_buffer_range.start;
944 }
945 }
946 SelectMode::All => {
947 return;
948 }
949 };
950
951 if head < tail {
952 selection.start = buffer.anchor_before(head);
953 selection.end = buffer.anchor_before(tail);
954 selection.reversed = true;
955 } else {
956 selection.start = buffer.anchor_before(tail);
957 selection.end = buffer.anchor_before(head);
958 selection.reversed = false;
959 }
960 } else {
961 log::error!("update_selection dispatched with no pending selection");
962 return;
963 }
964
965 self.set_scroll_position(scroll_position, cx);
966 cx.notify();
967 }
968
969 fn end_selection(&mut self, cx: &mut ViewContext<Self>) {
970 self.columnar_selection_tail.take();
971 if self.pending_selection.is_some() {
972 let selections = self.local_selections::<usize>(cx);
973 self.update_selections(selections, None, cx);
974 }
975 }
976
977 fn select_columns(
978 &mut self,
979 tail: DisplayPoint,
980 head: DisplayPoint,
981 overshoot: u32,
982 display_map: &DisplaySnapshot,
983 cx: &mut ViewContext<Self>,
984 ) {
985 let start_row = cmp::min(tail.row(), head.row());
986 let end_row = cmp::max(tail.row(), head.row());
987 let start_column = cmp::min(tail.column(), head.column() + overshoot);
988 let end_column = cmp::max(tail.column(), head.column() + overshoot);
989 let reversed = start_column < tail.column();
990
991 let selections = (start_row..=end_row)
992 .filter_map(|row| {
993 if start_column <= display_map.line_len(row) && !display_map.is_block_line(row) {
994 let start = display_map
995 .clip_point(DisplayPoint::new(row, start_column), Bias::Left)
996 .to_point(&display_map);
997 let end = display_map
998 .clip_point(DisplayPoint::new(row, end_column), Bias::Right)
999 .to_point(&display_map);
1000 Some(Selection {
1001 id: post_inc(&mut self.next_selection_id),
1002 start,
1003 end,
1004 reversed,
1005 goal: SelectionGoal::None,
1006 })
1007 } else {
1008 None
1009 }
1010 })
1011 .collect::<Vec<_>>();
1012
1013 self.update_selections(selections, None, cx);
1014 cx.notify();
1015 }
1016
1017 pub fn is_selecting(&self) -> bool {
1018 self.pending_selection.is_some() || self.columnar_selection_tail.is_some()
1019 }
1020
1021 pub fn cancel(&mut self, _: &Cancel, cx: &mut ViewContext<Self>) {
1022 if self.active_diagnostics.is_some() {
1023 self.dismiss_diagnostics(cx);
1024 } else if let Some(PendingSelection { selection, .. }) = self.pending_selection.take() {
1025 let buffer = self.buffer.read(cx).snapshot(cx);
1026 let selection = Selection {
1027 id: selection.id,
1028 start: selection.start.to_point(&buffer),
1029 end: selection.end.to_point(&buffer),
1030 reversed: selection.reversed,
1031 goal: selection.goal,
1032 };
1033 if self.local_selections::<Point>(cx).is_empty() {
1034 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
1035 }
1036 } else {
1037 let buffer = self.buffer.read(cx).snapshot(cx);
1038 let mut oldest_selection = self.oldest_selection::<usize>(&buffer);
1039 if self.selection_count() == 1 {
1040 if oldest_selection.is_empty() {
1041 cx.propagate_action();
1042 return;
1043 }
1044
1045 oldest_selection.start = oldest_selection.head().clone();
1046 oldest_selection.end = oldest_selection.head().clone();
1047 }
1048 self.update_selections(vec![oldest_selection], Some(Autoscroll::Fit), cx);
1049 }
1050 }
1051
1052 pub fn select_ranges<I, T>(
1053 &mut self,
1054 ranges: I,
1055 autoscroll: Option<Autoscroll>,
1056 cx: &mut ViewContext<Self>,
1057 ) where
1058 I: IntoIterator<Item = Range<T>>,
1059 T: ToOffset,
1060 {
1061 let buffer = self.buffer.read(cx).snapshot(cx);
1062 let selections = ranges
1063 .into_iter()
1064 .map(|range| {
1065 let mut start = range.start.to_offset(&buffer);
1066 let mut end = range.end.to_offset(&buffer);
1067 let reversed = if start > end {
1068 mem::swap(&mut start, &mut end);
1069 true
1070 } else {
1071 false
1072 };
1073 Selection {
1074 id: post_inc(&mut self.next_selection_id),
1075 start,
1076 end,
1077 reversed,
1078 goal: SelectionGoal::None,
1079 }
1080 })
1081 .collect();
1082 self.update_selections(selections, autoscroll, cx);
1083 }
1084
1085 #[cfg(test)]
1086 fn select_display_ranges<'a, T>(
1087 &mut self,
1088 ranges: T,
1089 cx: &mut ViewContext<Self>,
1090 ) -> anyhow::Result<()>
1091 where
1092 T: IntoIterator<Item = &'a Range<DisplayPoint>>,
1093 {
1094 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1095 let selections = ranges
1096 .into_iter()
1097 .map(|range| {
1098 let mut start = range.start;
1099 let mut end = range.end;
1100 let reversed = if start > end {
1101 mem::swap(&mut start, &mut end);
1102 true
1103 } else {
1104 false
1105 };
1106 Selection {
1107 id: post_inc(&mut self.next_selection_id),
1108 start: start.to_point(&display_map),
1109 end: end.to_point(&display_map),
1110 reversed,
1111 goal: SelectionGoal::None,
1112 }
1113 })
1114 .collect();
1115 self.update_selections(selections, None, cx);
1116 Ok(())
1117 }
1118
1119 pub fn handle_input(&mut self, action: &Input, cx: &mut ViewContext<Self>) {
1120 let text = action.0.as_ref();
1121 if !self.skip_autoclose_end(text, cx) {
1122 self.start_transaction(cx);
1123 self.insert(text, cx);
1124 self.autoclose_pairs(cx);
1125 self.end_transaction(cx);
1126 }
1127 }
1128
1129 pub fn newline(&mut self, _: &Newline, cx: &mut ViewContext<Self>) {
1130 self.start_transaction(cx);
1131 let mut old_selections = SmallVec::<[_; 32]>::new();
1132 {
1133 let selections = self.local_selections::<Point>(cx);
1134 let buffer = self.buffer.read(cx).snapshot(cx);
1135 for selection in selections.iter() {
1136 let start_point = selection.start;
1137 let indent = buffer
1138 .indent_column_for_line(start_point.row)
1139 .min(start_point.column);
1140 let start = selection.start.to_offset(&buffer);
1141 let end = selection.end.to_offset(&buffer);
1142
1143 let mut insert_extra_newline = false;
1144 if let Some(language) = buffer.language() {
1145 let leading_whitespace_len = buffer
1146 .reversed_chars_at(start)
1147 .take_while(|c| c.is_whitespace() && *c != '\n')
1148 .map(|c| c.len_utf8())
1149 .sum::<usize>();
1150
1151 let trailing_whitespace_len = buffer
1152 .chars_at(end)
1153 .take_while(|c| c.is_whitespace() && *c != '\n')
1154 .map(|c| c.len_utf8())
1155 .sum::<usize>();
1156
1157 insert_extra_newline = language.brackets().iter().any(|pair| {
1158 let pair_start = pair.start.trim_end();
1159 let pair_end = pair.end.trim_start();
1160
1161 pair.newline
1162 && buffer.contains_str_at(end + trailing_whitespace_len, pair_end)
1163 && buffer.contains_str_at(
1164 (start - leading_whitespace_len).saturating_sub(pair_start.len()),
1165 pair_start,
1166 )
1167 });
1168 }
1169
1170 old_selections.push((selection.id, start..end, indent, insert_extra_newline));
1171 }
1172 }
1173
1174 let mut new_selections = Vec::with_capacity(old_selections.len());
1175 self.buffer.update(cx, |buffer, cx| {
1176 let mut delta = 0_isize;
1177 let mut pending_edit: Option<PendingEdit> = None;
1178 for (_, range, indent, insert_extra_newline) in &old_selections {
1179 if pending_edit.as_ref().map_or(false, |pending| {
1180 pending.indent != *indent
1181 || pending.insert_extra_newline != *insert_extra_newline
1182 }) {
1183 let pending = pending_edit.take().unwrap();
1184 let mut new_text = String::with_capacity(1 + pending.indent as usize);
1185 new_text.push('\n');
1186 new_text.extend(iter::repeat(' ').take(pending.indent as usize));
1187 if pending.insert_extra_newline {
1188 new_text = new_text.repeat(2);
1189 }
1190 buffer.edit_with_autoindent(pending.ranges, new_text, cx);
1191 delta += pending.delta;
1192 }
1193
1194 let start = (range.start as isize + delta) as usize;
1195 let end = (range.end as isize + delta) as usize;
1196 let mut text_len = *indent as usize + 1;
1197 if *insert_extra_newline {
1198 text_len *= 2;
1199 }
1200
1201 let pending = pending_edit.get_or_insert_with(Default::default);
1202 pending.delta += text_len as isize - (end - start) as isize;
1203 pending.indent = *indent;
1204 pending.insert_extra_newline = *insert_extra_newline;
1205 pending.ranges.push(start..end);
1206 }
1207
1208 let pending = pending_edit.unwrap();
1209 let mut new_text = String::with_capacity(1 + pending.indent as usize);
1210 new_text.push('\n');
1211 new_text.extend(iter::repeat(' ').take(pending.indent as usize));
1212 if pending.insert_extra_newline {
1213 new_text = new_text.repeat(2);
1214 }
1215 buffer.edit_with_autoindent(pending.ranges, new_text, cx);
1216
1217 let mut delta = 0_isize;
1218 new_selections.extend(old_selections.into_iter().map(
1219 |(id, range, indent, insert_extra_newline)| {
1220 let start = (range.start as isize + delta) as usize;
1221 let end = (range.end as isize + delta) as usize;
1222 let text_before_cursor_len = indent as usize + 1;
1223 let cursor = start + text_before_cursor_len;
1224 let text_len = if insert_extra_newline {
1225 text_before_cursor_len * 2
1226 } else {
1227 text_before_cursor_len
1228 };
1229 delta += text_len as isize - (end - start) as isize;
1230 Selection {
1231 id,
1232 start: cursor,
1233 end: cursor,
1234 reversed: false,
1235 goal: SelectionGoal::None,
1236 }
1237 },
1238 ))
1239 });
1240
1241 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
1242 self.end_transaction(cx);
1243
1244 #[derive(Default)]
1245 struct PendingEdit {
1246 indent: u32,
1247 insert_extra_newline: bool,
1248 delta: isize,
1249 ranges: SmallVec<[Range<usize>; 32]>,
1250 }
1251 }
1252
1253 pub fn insert(&mut self, text: &str, cx: &mut ViewContext<Self>) {
1254 self.start_transaction(cx);
1255 let old_selections = self.local_selections::<usize>(cx);
1256 self.buffer.update(cx, |buffer, cx| {
1257 let edit_ranges = old_selections.iter().map(|s| s.start..s.end);
1258 buffer.edit_with_autoindent(edit_ranges, text, cx);
1259 });
1260
1261 let selections = self.local_selections::<usize>(cx);
1262 self.update_selections(selections, Some(Autoscroll::Fit), cx);
1263 self.end_transaction(cx);
1264 }
1265
1266 fn autoclose_pairs(&mut self, cx: &mut ViewContext<Self>) {
1267 let selections = self.local_selections::<usize>(cx);
1268 let mut bracket_pair_state = None;
1269 let mut new_selections = None;
1270 self.buffer.update(cx, |buffer, cx| {
1271 let mut snapshot = buffer.snapshot(cx);
1272 let left_biased_selections = selections
1273 .iter()
1274 .map(|selection| Selection {
1275 id: selection.id,
1276 start: snapshot.anchor_before(selection.start),
1277 end: snapshot.anchor_before(selection.end),
1278 reversed: selection.reversed,
1279 goal: selection.goal,
1280 })
1281 .collect::<Vec<_>>();
1282
1283 let autoclose_pair = snapshot.language().and_then(|language| {
1284 let first_selection_start = selections.first().unwrap().start;
1285 let pair = language.brackets().iter().find(|pair| {
1286 snapshot.contains_str_at(
1287 first_selection_start.saturating_sub(pair.start.len()),
1288 &pair.start,
1289 )
1290 });
1291 pair.and_then(|pair| {
1292 let should_autoclose = selections[1..].iter().all(|selection| {
1293 snapshot.contains_str_at(
1294 selection.start.saturating_sub(pair.start.len()),
1295 &pair.start,
1296 )
1297 });
1298
1299 if should_autoclose {
1300 Some(pair.clone())
1301 } else {
1302 None
1303 }
1304 })
1305 });
1306
1307 if let Some(pair) = autoclose_pair {
1308 let selection_ranges = selections
1309 .iter()
1310 .map(|selection| {
1311 let start = selection.start.to_offset(&snapshot);
1312 start..start
1313 })
1314 .collect::<SmallVec<[_; 32]>>();
1315
1316 buffer.edit(selection_ranges, &pair.end, cx);
1317 snapshot = buffer.snapshot(cx);
1318
1319 new_selections = Some(
1320 self.resolve_selections::<usize, _>(left_biased_selections.iter(), &snapshot)
1321 .collect::<Vec<_>>(),
1322 );
1323
1324 if pair.end.len() == 1 {
1325 let mut delta = 0;
1326 bracket_pair_state = Some(BracketPairState {
1327 ranges: selections
1328 .iter()
1329 .map(move |selection| {
1330 let offset = selection.start + delta;
1331 delta += 1;
1332 snapshot.anchor_before(offset)..snapshot.anchor_after(offset)
1333 })
1334 .collect(),
1335 pair,
1336 });
1337 }
1338 }
1339 });
1340
1341 if let Some(new_selections) = new_selections {
1342 self.update_selections(new_selections, None, cx);
1343 }
1344 if let Some(bracket_pair_state) = bracket_pair_state {
1345 self.autoclose_stack.push(bracket_pair_state);
1346 }
1347 }
1348
1349 fn skip_autoclose_end(&mut self, text: &str, cx: &mut ViewContext<Self>) -> bool {
1350 let old_selections = self.local_selections::<usize>(cx);
1351 let autoclose_pair = if let Some(autoclose_pair) = self.autoclose_stack.last() {
1352 autoclose_pair
1353 } else {
1354 return false;
1355 };
1356 if text != autoclose_pair.pair.end {
1357 return false;
1358 }
1359
1360 debug_assert_eq!(old_selections.len(), autoclose_pair.ranges.len());
1361
1362 let buffer = self.buffer.read(cx).snapshot(cx);
1363 if old_selections
1364 .iter()
1365 .zip(autoclose_pair.ranges.iter().map(|r| r.to_offset(&buffer)))
1366 .all(|(selection, autoclose_range)| {
1367 let autoclose_range_end = autoclose_range.end.to_offset(&buffer);
1368 selection.is_empty() && selection.start == autoclose_range_end
1369 })
1370 {
1371 let new_selections = old_selections
1372 .into_iter()
1373 .map(|selection| {
1374 let cursor = selection.start + 1;
1375 Selection {
1376 id: selection.id,
1377 start: cursor,
1378 end: cursor,
1379 reversed: false,
1380 goal: SelectionGoal::None,
1381 }
1382 })
1383 .collect();
1384 self.autoclose_stack.pop();
1385 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
1386 true
1387 } else {
1388 false
1389 }
1390 }
1391
1392 pub fn clear(&mut self, cx: &mut ViewContext<Self>) {
1393 self.start_transaction(cx);
1394 self.select_all(&SelectAll, cx);
1395 self.insert("", cx);
1396 self.end_transaction(cx);
1397 }
1398
1399 pub fn backspace(&mut self, _: &Backspace, cx: &mut ViewContext<Self>) {
1400 self.start_transaction(cx);
1401 let mut selections = self.local_selections::<Point>(cx);
1402 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1403 for selection in &mut selections {
1404 if selection.is_empty() {
1405 let head = selection.head().to_display_point(&display_map);
1406 let cursor = movement::left(&display_map, head)
1407 .unwrap()
1408 .to_point(&display_map);
1409 selection.set_head(cursor);
1410 selection.goal = SelectionGoal::None;
1411 }
1412 }
1413 self.update_selections(selections, Some(Autoscroll::Fit), cx);
1414 self.insert("", cx);
1415 self.end_transaction(cx);
1416 }
1417
1418 pub fn delete(&mut self, _: &Delete, cx: &mut ViewContext<Self>) {
1419 self.start_transaction(cx);
1420 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1421 let mut selections = self.local_selections::<Point>(cx);
1422 for selection in &mut selections {
1423 if selection.is_empty() {
1424 let head = selection.head().to_display_point(&display_map);
1425 let cursor = movement::right(&display_map, head)
1426 .unwrap()
1427 .to_point(&display_map);
1428 selection.set_head(cursor);
1429 selection.goal = SelectionGoal::None;
1430 }
1431 }
1432 self.update_selections(selections, Some(Autoscroll::Fit), cx);
1433 self.insert(&"", cx);
1434 self.end_transaction(cx);
1435 }
1436
1437 pub fn tab(&mut self, _: &Tab, cx: &mut ViewContext<Self>) {
1438 self.start_transaction(cx);
1439 let tab_size = (self.build_settings)(cx).tab_size;
1440 let mut selections = self.local_selections::<Point>(cx);
1441 let mut last_indent = None;
1442 self.buffer.update(cx, |buffer, cx| {
1443 for selection in &mut selections {
1444 if selection.is_empty() {
1445 let char_column = buffer
1446 .read(cx)
1447 .text_for_range(Point::new(selection.start.row, 0)..selection.start)
1448 .flat_map(str::chars)
1449 .count();
1450 let chars_to_next_tab_stop = tab_size - (char_column % tab_size);
1451 buffer.edit(
1452 [selection.start..selection.start],
1453 " ".repeat(chars_to_next_tab_stop),
1454 cx,
1455 );
1456 selection.start.column += chars_to_next_tab_stop as u32;
1457 selection.end = selection.start;
1458 } else {
1459 let mut start_row = selection.start.row;
1460 let mut end_row = selection.end.row + 1;
1461
1462 // If a selection ends at the beginning of a line, don't indent
1463 // that last line.
1464 if selection.end.column == 0 {
1465 end_row -= 1;
1466 }
1467
1468 // Avoid re-indenting a row that has already been indented by a
1469 // previous selection, but still update this selection's column
1470 // to reflect that indentation.
1471 if let Some((last_indent_row, last_indent_len)) = last_indent {
1472 if last_indent_row == selection.start.row {
1473 selection.start.column += last_indent_len;
1474 start_row += 1;
1475 }
1476 if last_indent_row == selection.end.row {
1477 selection.end.column += last_indent_len;
1478 }
1479 }
1480
1481 for row in start_row..end_row {
1482 let indent_column = buffer.read(cx).indent_column_for_line(row) as usize;
1483 let columns_to_next_tab_stop = tab_size - (indent_column % tab_size);
1484 let row_start = Point::new(row, 0);
1485 buffer.edit(
1486 [row_start..row_start],
1487 " ".repeat(columns_to_next_tab_stop),
1488 cx,
1489 );
1490
1491 // Update this selection's endpoints to reflect the indentation.
1492 if row == selection.start.row {
1493 selection.start.column += columns_to_next_tab_stop as u32;
1494 }
1495 if row == selection.end.row {
1496 selection.end.column += columns_to_next_tab_stop as u32;
1497 }
1498
1499 last_indent = Some((row, columns_to_next_tab_stop as u32));
1500 }
1501 }
1502 }
1503 });
1504
1505 self.update_selections(selections, Some(Autoscroll::Fit), cx);
1506 self.end_transaction(cx);
1507 }
1508
1509 pub fn outdent(&mut self, _: &Outdent, cx: &mut ViewContext<Self>) {
1510 self.start_transaction(cx);
1511 let tab_size = (self.build_settings)(cx).tab_size;
1512 let selections = self.local_selections::<Point>(cx);
1513 let mut deletion_ranges = Vec::new();
1514 let mut last_outdent = None;
1515 {
1516 let buffer = self.buffer.read(cx).read(cx);
1517 for selection in &selections {
1518 let mut start_row = selection.start.row;
1519 let mut end_row = selection.end.row + 1;
1520
1521 // If a selection ends at the beginning of a line, don't indent
1522 // that last line.
1523 if selection.end.column == 0 {
1524 end_row -= 1;
1525 }
1526
1527 // Avoid re-outdenting a row that has already been outdented by a
1528 // previous selection.
1529 if let Some(last_row) = last_outdent {
1530 if last_row == selection.start.row {
1531 start_row += 1;
1532 }
1533 }
1534
1535 for row in start_row..end_row {
1536 let column = buffer.indent_column_for_line(row) as usize;
1537 if column > 0 {
1538 let mut deletion_len = (column % tab_size) as u32;
1539 if deletion_len == 0 {
1540 deletion_len = tab_size as u32;
1541 }
1542 deletion_ranges.push(Point::new(row, 0)..Point::new(row, deletion_len));
1543 last_outdent = Some(row);
1544 }
1545 }
1546 }
1547 }
1548 self.buffer.update(cx, |buffer, cx| {
1549 buffer.edit(deletion_ranges, "", cx);
1550 });
1551
1552 self.update_selections(
1553 self.local_selections::<usize>(cx),
1554 Some(Autoscroll::Fit),
1555 cx,
1556 );
1557 self.end_transaction(cx);
1558 }
1559
1560 pub fn delete_line(&mut self, _: &DeleteLine, cx: &mut ViewContext<Self>) {
1561 self.start_transaction(cx);
1562
1563 let selections = self.local_selections::<Point>(cx);
1564 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1565 let buffer = self.buffer.read(cx).snapshot(cx);
1566
1567 let mut row_delta = 0;
1568 let mut new_cursors = Vec::new();
1569 let mut edit_ranges = Vec::new();
1570 let mut selections = selections.iter().peekable();
1571 while let Some(selection) = selections.next() {
1572 let mut rows = selection.spanned_rows(false, &display_map);
1573 let goal_display_column = selection.head().to_display_point(&display_map).column();
1574
1575 // Accumulate contiguous regions of rows that we want to delete.
1576 while let Some(next_selection) = selections.peek() {
1577 let next_rows = next_selection.spanned_rows(false, &display_map);
1578 if next_rows.start <= rows.end {
1579 rows.end = next_rows.end;
1580 selections.next().unwrap();
1581 } else {
1582 break;
1583 }
1584 }
1585
1586 let mut edit_start = Point::new(rows.start, 0).to_offset(&buffer);
1587 let edit_end;
1588 let cursor_buffer_row;
1589 if buffer.max_point().row >= rows.end {
1590 // If there's a line after the range, delete the \n from the end of the row range
1591 // and position the cursor on the next line.
1592 edit_end = Point::new(rows.end, 0).to_offset(&buffer);
1593 cursor_buffer_row = rows.start;
1594 } else {
1595 // If there isn't a line after the range, delete the \n from the line before the
1596 // start of the row range and position the cursor there.
1597 edit_start = edit_start.saturating_sub(1);
1598 edit_end = buffer.len();
1599 cursor_buffer_row = rows.start.saturating_sub(1);
1600 }
1601
1602 let mut cursor =
1603 Point::new(cursor_buffer_row - row_delta, 0).to_display_point(&display_map);
1604 *cursor.column_mut() =
1605 cmp::min(goal_display_column, display_map.line_len(cursor.row()));
1606 row_delta += rows.len() as u32;
1607
1608 new_cursors.push((selection.id, cursor.to_point(&display_map)));
1609 edit_ranges.push(edit_start..edit_end);
1610 }
1611
1612 new_cursors.sort_unstable_by_key(|(_, point)| point.clone());
1613 let new_selections = new_cursors
1614 .into_iter()
1615 .map(|(id, cursor)| Selection {
1616 id,
1617 start: cursor,
1618 end: cursor,
1619 reversed: false,
1620 goal: SelectionGoal::None,
1621 })
1622 .collect();
1623 self.buffer
1624 .update(cx, |buffer, cx| buffer.edit(edit_ranges, "", cx));
1625 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
1626 self.end_transaction(cx);
1627 }
1628
1629 pub fn duplicate_line(&mut self, _: &DuplicateLine, cx: &mut ViewContext<Self>) {
1630 self.start_transaction(cx);
1631
1632 let mut selections = self.local_selections::<Point>(cx);
1633 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1634 let buffer = &display_map.buffer_snapshot;
1635
1636 let mut edits = Vec::new();
1637 let mut selections_iter = selections.iter().peekable();
1638 while let Some(selection) = selections_iter.next() {
1639 // Avoid duplicating the same lines twice.
1640 let mut rows = selection.spanned_rows(false, &display_map);
1641
1642 while let Some(next_selection) = selections_iter.peek() {
1643 let next_rows = next_selection.spanned_rows(false, &display_map);
1644 if next_rows.start <= rows.end - 1 {
1645 rows.end = next_rows.end;
1646 selections_iter.next().unwrap();
1647 } else {
1648 break;
1649 }
1650 }
1651
1652 // Copy the text from the selected row region and splice it at the start of the region.
1653 let start = Point::new(rows.start, 0);
1654 let end = Point::new(rows.end - 1, buffer.line_len(rows.end - 1));
1655 let text = buffer
1656 .text_for_range(start..end)
1657 .chain(Some("\n"))
1658 .collect::<String>();
1659 edits.push((start, text, rows.len() as u32));
1660 }
1661
1662 let mut edits_iter = edits.iter().peekable();
1663 let mut row_delta = 0;
1664 for selection in selections.iter_mut() {
1665 while let Some((point, _, line_count)) = edits_iter.peek() {
1666 if *point <= selection.start {
1667 row_delta += line_count;
1668 edits_iter.next();
1669 } else {
1670 break;
1671 }
1672 }
1673 selection.start.row += row_delta;
1674 selection.end.row += row_delta;
1675 }
1676
1677 self.buffer.update(cx, |buffer, cx| {
1678 for (point, text, _) in edits.into_iter().rev() {
1679 buffer.edit(Some(point..point), text, cx);
1680 }
1681 });
1682
1683 self.update_selections(selections, Some(Autoscroll::Fit), cx);
1684 self.end_transaction(cx);
1685 }
1686
1687 pub fn move_line_up(&mut self, _: &MoveLineUp, cx: &mut ViewContext<Self>) {
1688 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1689 let buffer = self.buffer.read(cx).snapshot(cx);
1690
1691 let mut edits = Vec::new();
1692 let mut unfold_ranges = Vec::new();
1693 let mut refold_ranges = Vec::new();
1694
1695 let selections = self.local_selections::<Point>(cx);
1696 let mut selections = selections.iter().peekable();
1697 let mut contiguous_row_selections = Vec::new();
1698 let mut new_selections = Vec::new();
1699
1700 while let Some(selection) = selections.next() {
1701 // Find all the selections that span a contiguous row range
1702 contiguous_row_selections.push(selection.clone());
1703 let start_row = selection.start.row;
1704 let mut end_row = if selection.end.column > 0 || selection.is_empty() {
1705 display_map.next_line_boundary(selection.end).0.row + 1
1706 } else {
1707 selection.end.row
1708 };
1709
1710 while let Some(next_selection) = selections.peek() {
1711 if next_selection.start.row <= end_row {
1712 end_row = if next_selection.end.column > 0 || next_selection.is_empty() {
1713 display_map.next_line_boundary(next_selection.end).0.row + 1
1714 } else {
1715 next_selection.end.row
1716 };
1717 contiguous_row_selections.push(selections.next().unwrap().clone());
1718 } else {
1719 break;
1720 }
1721 }
1722
1723 // Move the text spanned by the row range to be before the line preceding the row range
1724 if start_row > 0 {
1725 let range_to_move = Point::new(start_row - 1, buffer.line_len(start_row - 1))
1726 ..Point::new(end_row - 1, buffer.line_len(end_row - 1));
1727 let insertion_point = display_map
1728 .prev_line_boundary(Point::new(start_row - 1, 0))
1729 .0;
1730
1731 // Don't move lines across excerpts
1732 if !buffer.range_contains_excerpt_boundary(insertion_point..range_to_move.end) {
1733 let text = buffer
1734 .text_for_range(range_to_move.clone())
1735 .flat_map(|s| s.chars())
1736 .skip(1)
1737 .chain(['\n'])
1738 .collect::<String>();
1739
1740 edits.push((
1741 buffer.anchor_after(range_to_move.start)
1742 ..buffer.anchor_before(range_to_move.end),
1743 String::new(),
1744 ));
1745 let insertion_anchor = buffer.anchor_after(insertion_point);
1746 edits.push((insertion_anchor.clone()..insertion_anchor, text));
1747
1748 let row_delta = range_to_move.start.row - insertion_point.row + 1;
1749
1750 // Move selections up
1751 new_selections.extend(contiguous_row_selections.drain(..).map(
1752 |mut selection| {
1753 selection.start.row -= row_delta;
1754 selection.end.row -= row_delta;
1755 selection
1756 },
1757 ));
1758
1759 // Move folds up
1760 unfold_ranges.push(range_to_move.clone());
1761 for fold in display_map.folds_in_range(
1762 buffer.anchor_before(range_to_move.start)
1763 ..buffer.anchor_after(range_to_move.end),
1764 ) {
1765 let mut start = fold.start.to_point(&buffer);
1766 let mut end = fold.end.to_point(&buffer);
1767 start.row -= row_delta;
1768 end.row -= row_delta;
1769 refold_ranges.push(start..end);
1770 }
1771 }
1772 }
1773
1774 // If we didn't move line(s), preserve the existing selections
1775 new_selections.extend(contiguous_row_selections.drain(..));
1776 }
1777
1778 self.start_transaction(cx);
1779 self.unfold_ranges(unfold_ranges, cx);
1780 self.buffer.update(cx, |buffer, cx| {
1781 for (range, text) in edits {
1782 buffer.edit([range], text, cx);
1783 }
1784 });
1785 self.fold_ranges(refold_ranges, cx);
1786 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
1787 self.end_transaction(cx);
1788 }
1789
1790 pub fn move_line_down(&mut self, _: &MoveLineDown, cx: &mut ViewContext<Self>) {
1791 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1792 let buffer = self.buffer.read(cx).snapshot(cx);
1793
1794 let mut edits = Vec::new();
1795 let mut unfold_ranges = Vec::new();
1796 let mut refold_ranges = Vec::new();
1797
1798 let selections = self.local_selections::<Point>(cx);
1799 let mut selections = selections.iter().peekable();
1800 let mut contiguous_row_selections = Vec::new();
1801 let mut new_selections = Vec::new();
1802
1803 while let Some(selection) = selections.next() {
1804 // Find all the selections that span a contiguous row range
1805 contiguous_row_selections.push(selection.clone());
1806 let start_row = selection.start.row;
1807 let mut end_row = if selection.end.column > 0 || selection.is_empty() {
1808 display_map.next_line_boundary(selection.end).0.row + 1
1809 } else {
1810 selection.end.row
1811 };
1812
1813 while let Some(next_selection) = selections.peek() {
1814 if next_selection.start.row <= end_row {
1815 end_row = if next_selection.end.column > 0 || next_selection.is_empty() {
1816 display_map.next_line_boundary(next_selection.end).0.row + 1
1817 } else {
1818 next_selection.end.row
1819 };
1820 contiguous_row_selections.push(selections.next().unwrap().clone());
1821 } else {
1822 break;
1823 }
1824 }
1825
1826 // Move the text spanned by the row range to be after the last line of the row range
1827 if end_row <= buffer.max_point().row {
1828 let range_to_move = Point::new(start_row, 0)..Point::new(end_row, 0);
1829 let insertion_point = display_map.next_line_boundary(Point::new(end_row, 0)).0;
1830
1831 // Don't move lines across excerpt boundaries
1832 if !buffer.range_contains_excerpt_boundary(range_to_move.start..insertion_point) {
1833 let mut text = String::from("\n");
1834 text.extend(buffer.text_for_range(range_to_move.clone()));
1835 text.pop(); // Drop trailing newline
1836 edits.push((
1837 buffer.anchor_after(range_to_move.start)
1838 ..buffer.anchor_before(range_to_move.end),
1839 String::new(),
1840 ));
1841 let insertion_anchor = buffer.anchor_after(insertion_point);
1842 edits.push((insertion_anchor.clone()..insertion_anchor, text));
1843
1844 let row_delta = insertion_point.row - range_to_move.end.row + 1;
1845
1846 // Move selections down
1847 new_selections.extend(contiguous_row_selections.drain(..).map(
1848 |mut selection| {
1849 selection.start.row += row_delta;
1850 selection.end.row += row_delta;
1851 selection
1852 },
1853 ));
1854
1855 // Move folds down
1856 unfold_ranges.push(range_to_move.clone());
1857 for fold in display_map.folds_in_range(
1858 buffer.anchor_before(range_to_move.start)
1859 ..buffer.anchor_after(range_to_move.end),
1860 ) {
1861 let mut start = fold.start.to_point(&buffer);
1862 let mut end = fold.end.to_point(&buffer);
1863 start.row += row_delta;
1864 end.row += row_delta;
1865 refold_ranges.push(start..end);
1866 }
1867 }
1868 }
1869
1870 // If we didn't move line(s), preserve the existing selections
1871 new_selections.extend(contiguous_row_selections.drain(..));
1872 }
1873
1874 self.start_transaction(cx);
1875 self.unfold_ranges(unfold_ranges, cx);
1876 self.buffer.update(cx, |buffer, cx| {
1877 for (range, text) in edits {
1878 buffer.edit([range], text, cx);
1879 }
1880 });
1881 self.fold_ranges(refold_ranges, cx);
1882 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
1883 self.end_transaction(cx);
1884 }
1885
1886 pub fn cut(&mut self, _: &Cut, cx: &mut ViewContext<Self>) {
1887 self.start_transaction(cx);
1888 let mut text = String::new();
1889 let mut selections = self.local_selections::<Point>(cx);
1890 let mut clipboard_selections = Vec::with_capacity(selections.len());
1891 {
1892 let buffer = self.buffer.read(cx).read(cx);
1893 let max_point = buffer.max_point();
1894 for selection in &mut selections {
1895 let is_entire_line = selection.is_empty();
1896 if is_entire_line {
1897 selection.start = Point::new(selection.start.row, 0);
1898 selection.end = cmp::min(max_point, Point::new(selection.end.row + 1, 0));
1899 }
1900 let mut len = 0;
1901 for chunk in buffer.text_for_range(selection.start..selection.end) {
1902 text.push_str(chunk);
1903 len += chunk.len();
1904 }
1905 clipboard_selections.push(ClipboardSelection {
1906 len,
1907 is_entire_line,
1908 });
1909 }
1910 }
1911 self.update_selections(selections, Some(Autoscroll::Fit), cx);
1912 self.insert("", cx);
1913 self.end_transaction(cx);
1914
1915 cx.as_mut()
1916 .write_to_clipboard(ClipboardItem::new(text).with_metadata(clipboard_selections));
1917 }
1918
1919 pub fn copy(&mut self, _: &Copy, cx: &mut ViewContext<Self>) {
1920 let selections = self.local_selections::<Point>(cx);
1921 let mut text = String::new();
1922 let mut clipboard_selections = Vec::with_capacity(selections.len());
1923 {
1924 let buffer = self.buffer.read(cx).read(cx);
1925 let max_point = buffer.max_point();
1926 for selection in selections.iter() {
1927 let mut start = selection.start;
1928 let mut end = selection.end;
1929 let is_entire_line = selection.is_empty();
1930 if is_entire_line {
1931 start = Point::new(start.row, 0);
1932 end = cmp::min(max_point, Point::new(start.row + 1, 0));
1933 }
1934 let mut len = 0;
1935 for chunk in buffer.text_for_range(start..end) {
1936 text.push_str(chunk);
1937 len += chunk.len();
1938 }
1939 clipboard_selections.push(ClipboardSelection {
1940 len,
1941 is_entire_line,
1942 });
1943 }
1944 }
1945
1946 cx.as_mut()
1947 .write_to_clipboard(ClipboardItem::new(text).with_metadata(clipboard_selections));
1948 }
1949
1950 pub fn paste(&mut self, _: &Paste, cx: &mut ViewContext<Self>) {
1951 if let Some(item) = cx.as_mut().read_from_clipboard() {
1952 let clipboard_text = item.text();
1953 if let Some(mut clipboard_selections) = item.metadata::<Vec<ClipboardSelection>>() {
1954 let mut selections = self.local_selections::<usize>(cx);
1955 let all_selections_were_entire_line =
1956 clipboard_selections.iter().all(|s| s.is_entire_line);
1957 if clipboard_selections.len() != selections.len() {
1958 clipboard_selections.clear();
1959 }
1960
1961 let mut delta = 0_isize;
1962 let mut start_offset = 0;
1963 for (i, selection) in selections.iter_mut().enumerate() {
1964 let to_insert;
1965 let entire_line;
1966 if let Some(clipboard_selection) = clipboard_selections.get(i) {
1967 let end_offset = start_offset + clipboard_selection.len;
1968 to_insert = &clipboard_text[start_offset..end_offset];
1969 entire_line = clipboard_selection.is_entire_line;
1970 start_offset = end_offset
1971 } else {
1972 to_insert = clipboard_text.as_str();
1973 entire_line = all_selections_were_entire_line;
1974 }
1975
1976 selection.start = (selection.start as isize + delta) as usize;
1977 selection.end = (selection.end as isize + delta) as usize;
1978
1979 self.buffer.update(cx, |buffer, cx| {
1980 // If the corresponding selection was empty when this slice of the
1981 // clipboard text was written, then the entire line containing the
1982 // selection was copied. If this selection is also currently empty,
1983 // then paste the line before the current line of the buffer.
1984 let range = if selection.is_empty() && entire_line {
1985 let column = selection.start.to_point(&buffer.read(cx)).column as usize;
1986 let line_start = selection.start - column;
1987 line_start..line_start
1988 } else {
1989 selection.start..selection.end
1990 };
1991
1992 delta += to_insert.len() as isize - range.len() as isize;
1993 buffer.edit([range], to_insert, cx);
1994 selection.start += to_insert.len();
1995 selection.end = selection.start;
1996 });
1997 }
1998 self.update_selections(selections, Some(Autoscroll::Fit), cx);
1999 } else {
2000 self.insert(clipboard_text, cx);
2001 }
2002 }
2003 }
2004
2005 pub fn undo(&mut self, _: &Undo, cx: &mut ViewContext<Self>) {
2006 if let Some(tx_id) = self.buffer.update(cx, |buffer, cx| buffer.undo(cx)) {
2007 if let Some((selections, _)) = self.selection_history.get(&tx_id).cloned() {
2008 self.set_selections(selections, cx);
2009 }
2010 self.request_autoscroll(Autoscroll::Fit, cx);
2011 }
2012 }
2013
2014 pub fn redo(&mut self, _: &Redo, cx: &mut ViewContext<Self>) {
2015 if let Some(tx_id) = self.buffer.update(cx, |buffer, cx| buffer.redo(cx)) {
2016 if let Some((_, Some(selections))) = self.selection_history.get(&tx_id).cloned() {
2017 self.set_selections(selections, cx);
2018 }
2019 self.request_autoscroll(Autoscroll::Fit, cx);
2020 }
2021 }
2022
2023 pub fn move_left(&mut self, _: &MoveLeft, cx: &mut ViewContext<Self>) {
2024 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2025 let mut selections = self.local_selections::<Point>(cx);
2026 for selection in &mut selections {
2027 let start = selection.start.to_display_point(&display_map);
2028 let end = selection.end.to_display_point(&display_map);
2029
2030 if start != end {
2031 selection.end = selection.start.clone();
2032 } else {
2033 let cursor = movement::left(&display_map, start)
2034 .unwrap()
2035 .to_point(&display_map);
2036 selection.start = cursor.clone();
2037 selection.end = cursor;
2038 }
2039 selection.reversed = false;
2040 selection.goal = SelectionGoal::None;
2041 }
2042 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2043 }
2044
2045 pub fn select_left(&mut self, _: &SelectLeft, cx: &mut ViewContext<Self>) {
2046 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2047 let mut selections = self.local_selections::<Point>(cx);
2048 for selection in &mut selections {
2049 let head = selection.head().to_display_point(&display_map);
2050 let cursor = movement::left(&display_map, head)
2051 .unwrap()
2052 .to_point(&display_map);
2053 selection.set_head(cursor);
2054 selection.goal = SelectionGoal::None;
2055 }
2056 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2057 }
2058
2059 pub fn move_right(&mut self, _: &MoveRight, cx: &mut ViewContext<Self>) {
2060 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2061 let mut selections = self.local_selections::<Point>(cx);
2062 for selection in &mut selections {
2063 let start = selection.start.to_display_point(&display_map);
2064 let end = selection.end.to_display_point(&display_map);
2065
2066 if start != end {
2067 selection.start = selection.end.clone();
2068 } else {
2069 let cursor = movement::right(&display_map, end)
2070 .unwrap()
2071 .to_point(&display_map);
2072 selection.start = cursor;
2073 selection.end = cursor;
2074 }
2075 selection.reversed = false;
2076 selection.goal = SelectionGoal::None;
2077 }
2078 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2079 }
2080
2081 pub fn select_right(&mut self, _: &SelectRight, cx: &mut ViewContext<Self>) {
2082 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2083 let mut selections = self.local_selections::<Point>(cx);
2084 for selection in &mut selections {
2085 let head = selection.head().to_display_point(&display_map);
2086 let cursor = movement::right(&display_map, head)
2087 .unwrap()
2088 .to_point(&display_map);
2089 selection.set_head(cursor);
2090 selection.goal = SelectionGoal::None;
2091 }
2092 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2093 }
2094
2095 pub fn move_up(&mut self, _: &MoveUp, cx: &mut ViewContext<Self>) {
2096 if matches!(self.mode, EditorMode::SingleLine) {
2097 cx.propagate_action();
2098 return;
2099 }
2100
2101 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2102 let mut selections = self.local_selections::<Point>(cx);
2103 for selection in &mut selections {
2104 let start = selection.start.to_display_point(&display_map);
2105 let end = selection.end.to_display_point(&display_map);
2106 if start != end {
2107 selection.goal = SelectionGoal::None;
2108 }
2109
2110 let (start, goal) = movement::up(&display_map, start, selection.goal).unwrap();
2111 let cursor = start.to_point(&display_map);
2112 selection.start = cursor;
2113 selection.end = cursor;
2114 selection.goal = goal;
2115 selection.reversed = false;
2116 }
2117 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2118 }
2119
2120 pub fn select_up(&mut self, _: &SelectUp, cx: &mut ViewContext<Self>) {
2121 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2122 let mut selections = self.local_selections::<Point>(cx);
2123 for selection in &mut selections {
2124 let head = selection.head().to_display_point(&display_map);
2125 let (head, goal) = movement::up(&display_map, head, selection.goal).unwrap();
2126 let cursor = head.to_point(&display_map);
2127 selection.set_head(cursor);
2128 selection.goal = goal;
2129 }
2130 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2131 }
2132
2133 pub fn move_down(&mut self, _: &MoveDown, cx: &mut ViewContext<Self>) {
2134 if matches!(self.mode, EditorMode::SingleLine) {
2135 cx.propagate_action();
2136 return;
2137 }
2138
2139 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2140 let mut selections = self.local_selections::<Point>(cx);
2141 for selection in &mut selections {
2142 let start = selection.start.to_display_point(&display_map);
2143 let end = selection.end.to_display_point(&display_map);
2144 if start != end {
2145 selection.goal = SelectionGoal::None;
2146 }
2147
2148 let (start, goal) = movement::down(&display_map, end, selection.goal).unwrap();
2149 let cursor = start.to_point(&display_map);
2150 selection.start = cursor;
2151 selection.end = cursor;
2152 selection.goal = goal;
2153 selection.reversed = false;
2154 }
2155 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2156 }
2157
2158 pub fn select_down(&mut self, _: &SelectDown, cx: &mut ViewContext<Self>) {
2159 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2160 let mut selections = self.local_selections::<Point>(cx);
2161 for selection in &mut selections {
2162 let head = selection.head().to_display_point(&display_map);
2163 let (head, goal) = movement::down(&display_map, head, selection.goal).unwrap();
2164 let cursor = head.to_point(&display_map);
2165 selection.set_head(cursor);
2166 selection.goal = goal;
2167 }
2168 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2169 }
2170
2171 pub fn move_to_previous_word_boundary(
2172 &mut self,
2173 _: &MoveToPreviousWordBoundary,
2174 cx: &mut ViewContext<Self>,
2175 ) {
2176 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2177 let mut selections = self.local_selections::<Point>(cx);
2178 for selection in &mut selections {
2179 let head = selection.head().to_display_point(&display_map);
2180 let cursor = movement::prev_word_boundary(&display_map, head).to_point(&display_map);
2181 selection.start = cursor.clone();
2182 selection.end = cursor;
2183 selection.reversed = false;
2184 selection.goal = SelectionGoal::None;
2185 }
2186 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2187 }
2188
2189 pub fn select_to_previous_word_boundary(
2190 &mut self,
2191 _: &SelectToPreviousWordBoundary,
2192 cx: &mut ViewContext<Self>,
2193 ) {
2194 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2195 let mut selections = self.local_selections::<Point>(cx);
2196 for selection in &mut selections {
2197 let head = selection.head().to_display_point(&display_map);
2198 let cursor = movement::prev_word_boundary(&display_map, head).to_point(&display_map);
2199 selection.set_head(cursor);
2200 selection.goal = SelectionGoal::None;
2201 }
2202 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2203 }
2204
2205 pub fn delete_to_previous_word_boundary(
2206 &mut self,
2207 _: &DeleteToPreviousWordBoundary,
2208 cx: &mut ViewContext<Self>,
2209 ) {
2210 self.start_transaction(cx);
2211 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2212 let mut selections = self.local_selections::<Point>(cx);
2213 for selection in &mut selections {
2214 if selection.is_empty() {
2215 let head = selection.head().to_display_point(&display_map);
2216 let cursor =
2217 movement::prev_word_boundary(&display_map, head).to_point(&display_map);
2218 selection.set_head(cursor);
2219 selection.goal = SelectionGoal::None;
2220 }
2221 }
2222 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2223 self.insert("", cx);
2224 self.end_transaction(cx);
2225 }
2226
2227 pub fn move_to_next_word_boundary(
2228 &mut self,
2229 _: &MoveToNextWordBoundary,
2230 cx: &mut ViewContext<Self>,
2231 ) {
2232 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2233 let mut selections = self.local_selections::<Point>(cx);
2234 for selection in &mut selections {
2235 let head = selection.head().to_display_point(&display_map);
2236 let cursor = movement::next_word_boundary(&display_map, head).to_point(&display_map);
2237 selection.start = cursor;
2238 selection.end = cursor;
2239 selection.reversed = false;
2240 selection.goal = SelectionGoal::None;
2241 }
2242 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2243 }
2244
2245 pub fn select_to_next_word_boundary(
2246 &mut self,
2247 _: &SelectToNextWordBoundary,
2248 cx: &mut ViewContext<Self>,
2249 ) {
2250 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2251 let mut selections = self.local_selections::<Point>(cx);
2252 for selection in &mut selections {
2253 let head = selection.head().to_display_point(&display_map);
2254 let cursor = movement::next_word_boundary(&display_map, head).to_point(&display_map);
2255 selection.set_head(cursor);
2256 selection.goal = SelectionGoal::None;
2257 }
2258 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2259 }
2260
2261 pub fn delete_to_next_word_boundary(
2262 &mut self,
2263 _: &DeleteToNextWordBoundary,
2264 cx: &mut ViewContext<Self>,
2265 ) {
2266 self.start_transaction(cx);
2267 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2268 let mut selections = self.local_selections::<Point>(cx);
2269 for selection in &mut selections {
2270 if selection.is_empty() {
2271 let head = selection.head().to_display_point(&display_map);
2272 let cursor =
2273 movement::next_word_boundary(&display_map, head).to_point(&display_map);
2274 selection.set_head(cursor);
2275 selection.goal = SelectionGoal::None;
2276 }
2277 }
2278 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2279 self.insert("", cx);
2280 self.end_transaction(cx);
2281 }
2282
2283 pub fn move_to_beginning_of_line(
2284 &mut self,
2285 _: &MoveToBeginningOfLine,
2286 cx: &mut ViewContext<Self>,
2287 ) {
2288 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2289 let mut selections = self.local_selections::<Point>(cx);
2290 for selection in &mut selections {
2291 let head = selection.head().to_display_point(&display_map);
2292 let new_head = movement::line_beginning(&display_map, head, true);
2293 let cursor = new_head.to_point(&display_map);
2294 selection.start = cursor;
2295 selection.end = cursor;
2296 selection.reversed = false;
2297 selection.goal = SelectionGoal::None;
2298 }
2299 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2300 }
2301
2302 pub fn select_to_beginning_of_line(
2303 &mut self,
2304 SelectToBeginningOfLine(toggle_indent): &SelectToBeginningOfLine,
2305 cx: &mut ViewContext<Self>,
2306 ) {
2307 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2308 let mut selections = self.local_selections::<Point>(cx);
2309 for selection in &mut selections {
2310 let head = selection.head().to_display_point(&display_map);
2311 let new_head = movement::line_beginning(&display_map, head, *toggle_indent);
2312 selection.set_head(new_head.to_point(&display_map));
2313 selection.goal = SelectionGoal::None;
2314 }
2315 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2316 }
2317
2318 pub fn delete_to_beginning_of_line(
2319 &mut self,
2320 _: &DeleteToBeginningOfLine,
2321 cx: &mut ViewContext<Self>,
2322 ) {
2323 self.start_transaction(cx);
2324 self.select_to_beginning_of_line(&SelectToBeginningOfLine(false), cx);
2325 self.backspace(&Backspace, cx);
2326 self.end_transaction(cx);
2327 }
2328
2329 pub fn move_to_end_of_line(&mut self, _: &MoveToEndOfLine, cx: &mut ViewContext<Self>) {
2330 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2331 let mut selections = self.local_selections::<Point>(cx);
2332 {
2333 for selection in &mut selections {
2334 let head = selection.head().to_display_point(&display_map);
2335 let new_head = movement::line_end(&display_map, head);
2336 let anchor = new_head.to_point(&display_map);
2337 selection.start = anchor.clone();
2338 selection.end = anchor;
2339 selection.reversed = false;
2340 selection.goal = SelectionGoal::None;
2341 }
2342 }
2343 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2344 }
2345
2346 pub fn select_to_end_of_line(&mut self, _: &SelectToEndOfLine, cx: &mut ViewContext<Self>) {
2347 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2348 let mut selections = self.local_selections::<Point>(cx);
2349 for selection in &mut selections {
2350 let head = selection.head().to_display_point(&display_map);
2351 let new_head = movement::line_end(&display_map, head);
2352 selection.set_head(new_head.to_point(&display_map));
2353 selection.goal = SelectionGoal::None;
2354 }
2355 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2356 }
2357
2358 pub fn delete_to_end_of_line(&mut self, _: &DeleteToEndOfLine, cx: &mut ViewContext<Self>) {
2359 self.start_transaction(cx);
2360 self.select_to_end_of_line(&SelectToEndOfLine, cx);
2361 self.delete(&Delete, cx);
2362 self.end_transaction(cx);
2363 }
2364
2365 pub fn cut_to_end_of_line(&mut self, _: &CutToEndOfLine, cx: &mut ViewContext<Self>) {
2366 self.start_transaction(cx);
2367 self.select_to_end_of_line(&SelectToEndOfLine, cx);
2368 self.cut(&Cut, cx);
2369 self.end_transaction(cx);
2370 }
2371
2372 pub fn move_to_beginning(&mut self, _: &MoveToBeginning, cx: &mut ViewContext<Self>) {
2373 let selection = Selection {
2374 id: post_inc(&mut self.next_selection_id),
2375 start: 0,
2376 end: 0,
2377 reversed: false,
2378 goal: SelectionGoal::None,
2379 };
2380 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
2381 }
2382
2383 pub fn select_to_beginning(&mut self, _: &SelectToBeginning, cx: &mut ViewContext<Self>) {
2384 let mut selection = self.local_selections::<Point>(cx).last().unwrap().clone();
2385 selection.set_head(Point::zero());
2386 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
2387 }
2388
2389 pub fn move_to_end(&mut self, _: &MoveToEnd, cx: &mut ViewContext<Self>) {
2390 let cursor = self.buffer.read(cx).read(cx).len();
2391 let selection = Selection {
2392 id: post_inc(&mut self.next_selection_id),
2393 start: cursor,
2394 end: cursor,
2395 reversed: false,
2396 goal: SelectionGoal::None,
2397 };
2398 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
2399 }
2400
2401 pub fn select_to_end(&mut self, _: &SelectToEnd, cx: &mut ViewContext<Self>) {
2402 let mut selection = self.local_selections::<usize>(cx).first().unwrap().clone();
2403 selection.set_head(self.buffer.read(cx).read(cx).len());
2404 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
2405 }
2406
2407 pub fn select_all(&mut self, _: &SelectAll, cx: &mut ViewContext<Self>) {
2408 let selection = Selection {
2409 id: post_inc(&mut self.next_selection_id),
2410 start: 0,
2411 end: self.buffer.read(cx).read(cx).len(),
2412 reversed: false,
2413 goal: SelectionGoal::None,
2414 };
2415 self.update_selections(vec![selection], None, cx);
2416 }
2417
2418 pub fn select_line(&mut self, _: &SelectLine, cx: &mut ViewContext<Self>) {
2419 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2420 let mut selections = self.local_selections::<Point>(cx);
2421 let max_point = display_map.buffer_snapshot.max_point();
2422 for selection in &mut selections {
2423 let rows = selection.spanned_rows(true, &display_map);
2424 selection.start = Point::new(rows.start, 0);
2425 selection.end = cmp::min(max_point, Point::new(rows.end, 0));
2426 selection.reversed = false;
2427 }
2428 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2429 }
2430
2431 pub fn split_selection_into_lines(
2432 &mut self,
2433 _: &SplitSelectionIntoLines,
2434 cx: &mut ViewContext<Self>,
2435 ) {
2436 let mut to_unfold = Vec::new();
2437 let mut new_selections = Vec::new();
2438 {
2439 let selections = self.local_selections::<Point>(cx);
2440 let buffer = self.buffer.read(cx).read(cx);
2441 for selection in selections {
2442 for row in selection.start.row..selection.end.row {
2443 let cursor = Point::new(row, buffer.line_len(row));
2444 new_selections.push(Selection {
2445 id: post_inc(&mut self.next_selection_id),
2446 start: cursor,
2447 end: cursor,
2448 reversed: false,
2449 goal: SelectionGoal::None,
2450 });
2451 }
2452 new_selections.push(Selection {
2453 id: selection.id,
2454 start: selection.end,
2455 end: selection.end,
2456 reversed: false,
2457 goal: SelectionGoal::None,
2458 });
2459 to_unfold.push(selection.start..selection.end);
2460 }
2461 }
2462 self.unfold_ranges(to_unfold, cx);
2463 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
2464 }
2465
2466 pub fn add_selection_above(&mut self, _: &AddSelectionAbove, cx: &mut ViewContext<Self>) {
2467 self.add_selection(true, cx);
2468 }
2469
2470 pub fn add_selection_below(&mut self, _: &AddSelectionBelow, cx: &mut ViewContext<Self>) {
2471 self.add_selection(false, cx);
2472 }
2473
2474 fn add_selection(&mut self, above: bool, cx: &mut ViewContext<Self>) {
2475 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2476 let mut selections = self.local_selections::<Point>(cx);
2477 let mut state = self.add_selections_state.take().unwrap_or_else(|| {
2478 let oldest_selection = selections.iter().min_by_key(|s| s.id).unwrap().clone();
2479 let range = oldest_selection.display_range(&display_map).sorted();
2480 let columns = cmp::min(range.start.column(), range.end.column())
2481 ..cmp::max(range.start.column(), range.end.column());
2482
2483 selections.clear();
2484 let mut stack = Vec::new();
2485 for row in range.start.row()..=range.end.row() {
2486 if let Some(selection) = self.build_columnar_selection(
2487 &display_map,
2488 row,
2489 &columns,
2490 oldest_selection.reversed,
2491 ) {
2492 stack.push(selection.id);
2493 selections.push(selection);
2494 }
2495 }
2496
2497 if above {
2498 stack.reverse();
2499 }
2500
2501 AddSelectionsState { above, stack }
2502 });
2503
2504 let last_added_selection = *state.stack.last().unwrap();
2505 let mut new_selections = Vec::new();
2506 if above == state.above {
2507 let end_row = if above {
2508 0
2509 } else {
2510 display_map.max_point().row()
2511 };
2512
2513 'outer: for selection in selections {
2514 if selection.id == last_added_selection {
2515 let range = selection.display_range(&display_map).sorted();
2516 debug_assert_eq!(range.start.row(), range.end.row());
2517 let mut row = range.start.row();
2518 let columns = if let SelectionGoal::ColumnRange { start, end } = selection.goal
2519 {
2520 start..end
2521 } else {
2522 cmp::min(range.start.column(), range.end.column())
2523 ..cmp::max(range.start.column(), range.end.column())
2524 };
2525
2526 while row != end_row {
2527 if above {
2528 row -= 1;
2529 } else {
2530 row += 1;
2531 }
2532
2533 if let Some(new_selection) = self.build_columnar_selection(
2534 &display_map,
2535 row,
2536 &columns,
2537 selection.reversed,
2538 ) {
2539 state.stack.push(new_selection.id);
2540 if above {
2541 new_selections.push(new_selection);
2542 new_selections.push(selection);
2543 } else {
2544 new_selections.push(selection);
2545 new_selections.push(new_selection);
2546 }
2547
2548 continue 'outer;
2549 }
2550 }
2551 }
2552
2553 new_selections.push(selection);
2554 }
2555 } else {
2556 new_selections = selections;
2557 new_selections.retain(|s| s.id != last_added_selection);
2558 state.stack.pop();
2559 }
2560
2561 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
2562 if state.stack.len() > 1 {
2563 self.add_selections_state = Some(state);
2564 }
2565 }
2566
2567 pub fn select_next(&mut self, action: &SelectNext, cx: &mut ViewContext<Self>) {
2568 let replace_newest = action.0;
2569 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2570 let buffer = &display_map.buffer_snapshot;
2571 let mut selections = self.local_selections::<usize>(cx);
2572 if let Some(mut select_next_state) = self.select_next_state.take() {
2573 let query = &select_next_state.query;
2574 if !select_next_state.done {
2575 let first_selection = selections.iter().min_by_key(|s| s.id).unwrap();
2576 let last_selection = selections.iter().max_by_key(|s| s.id).unwrap();
2577 let mut next_selected_range = None;
2578
2579 let bytes_after_last_selection =
2580 buffer.bytes_in_range(last_selection.end..buffer.len());
2581 let bytes_before_first_selection = buffer.bytes_in_range(0..first_selection.start);
2582 let query_matches = query
2583 .stream_find_iter(bytes_after_last_selection)
2584 .map(|result| (last_selection.end, result))
2585 .chain(
2586 query
2587 .stream_find_iter(bytes_before_first_selection)
2588 .map(|result| (0, result)),
2589 );
2590 for (start_offset, query_match) in query_matches {
2591 let query_match = query_match.unwrap(); // can only fail due to I/O
2592 let offset_range =
2593 start_offset + query_match.start()..start_offset + query_match.end();
2594 let display_range = offset_range.start.to_display_point(&display_map)
2595 ..offset_range.end.to_display_point(&display_map);
2596
2597 if !select_next_state.wordwise
2598 || (!movement::is_inside_word(&display_map, display_range.start)
2599 && !movement::is_inside_word(&display_map, display_range.end))
2600 {
2601 next_selected_range = Some(offset_range);
2602 break;
2603 }
2604 }
2605
2606 if let Some(next_selected_range) = next_selected_range {
2607 if replace_newest {
2608 if let Some(newest_id) =
2609 selections.iter().max_by_key(|s| s.id).map(|s| s.id)
2610 {
2611 selections.retain(|s| s.id != newest_id);
2612 }
2613 }
2614 selections.push(Selection {
2615 id: post_inc(&mut self.next_selection_id),
2616 start: next_selected_range.start,
2617 end: next_selected_range.end,
2618 reversed: false,
2619 goal: SelectionGoal::None,
2620 });
2621 selections.sort_unstable_by_key(|s| s.start);
2622 self.update_selections(selections, Some(Autoscroll::Newest), cx);
2623 } else {
2624 select_next_state.done = true;
2625 }
2626 }
2627
2628 self.select_next_state = Some(select_next_state);
2629 } else if selections.len() == 1 {
2630 let selection = selections.last_mut().unwrap();
2631 if selection.start == selection.end {
2632 let word_range = movement::surrounding_word(
2633 &display_map,
2634 selection.start.to_display_point(&display_map),
2635 );
2636 selection.start = word_range.start.to_offset(&display_map, Bias::Left);
2637 selection.end = word_range.end.to_offset(&display_map, Bias::Left);
2638 selection.goal = SelectionGoal::None;
2639 selection.reversed = false;
2640
2641 let query = buffer
2642 .text_for_range(selection.start..selection.end)
2643 .collect::<String>();
2644 let select_state = SelectNextState {
2645 query: AhoCorasick::new_auto_configured(&[query]),
2646 wordwise: true,
2647 done: false,
2648 };
2649 self.update_selections(selections, Some(Autoscroll::Newest), cx);
2650 self.select_next_state = Some(select_state);
2651 } else {
2652 let query = buffer
2653 .text_for_range(selection.start..selection.end)
2654 .collect::<String>();
2655 self.select_next_state = Some(SelectNextState {
2656 query: AhoCorasick::new_auto_configured(&[query]),
2657 wordwise: false,
2658 done: false,
2659 });
2660 self.select_next(action, cx);
2661 }
2662 }
2663 }
2664
2665 pub fn toggle_comments(&mut self, _: &ToggleComments, cx: &mut ViewContext<Self>) {
2666 // Get the line comment prefix. Split its trailing whitespace into a separate string,
2667 // as that portion won't be used for detecting if a line is a comment.
2668 let full_comment_prefix =
2669 if let Some(prefix) = self.language(cx).and_then(|l| l.line_comment_prefix()) {
2670 prefix.to_string()
2671 } else {
2672 return;
2673 };
2674 let comment_prefix = full_comment_prefix.trim_end_matches(' ');
2675 let comment_prefix_whitespace = &full_comment_prefix[comment_prefix.len()..];
2676
2677 self.start_transaction(cx);
2678 let mut selections = self.local_selections::<Point>(cx);
2679 let mut all_selection_lines_are_comments = true;
2680 let mut edit_ranges = Vec::new();
2681 let mut last_toggled_row = None;
2682 self.buffer.update(cx, |buffer, cx| {
2683 for selection in &mut selections {
2684 edit_ranges.clear();
2685 let snapshot = buffer.snapshot(cx);
2686
2687 let end_row =
2688 if selection.end.row > selection.start.row && selection.end.column == 0 {
2689 selection.end.row
2690 } else {
2691 selection.end.row + 1
2692 };
2693
2694 for row in selection.start.row..end_row {
2695 // If multiple selections contain a given row, avoid processing that
2696 // row more than once.
2697 if last_toggled_row == Some(row) {
2698 continue;
2699 } else {
2700 last_toggled_row = Some(row);
2701 }
2702
2703 if snapshot.is_line_blank(row) {
2704 continue;
2705 }
2706
2707 let start = Point::new(row, snapshot.indent_column_for_line(row));
2708 let mut line_bytes = snapshot
2709 .bytes_in_range(start..snapshot.max_point())
2710 .flatten()
2711 .copied();
2712
2713 // If this line currently begins with the line comment prefix, then record
2714 // the range containing the prefix.
2715 if all_selection_lines_are_comments
2716 && line_bytes
2717 .by_ref()
2718 .take(comment_prefix.len())
2719 .eq(comment_prefix.bytes())
2720 {
2721 // Include any whitespace that matches the comment prefix.
2722 let matching_whitespace_len = line_bytes
2723 .zip(comment_prefix_whitespace.bytes())
2724 .take_while(|(a, b)| a == b)
2725 .count() as u32;
2726 let end = Point::new(
2727 row,
2728 start.column + comment_prefix.len() as u32 + matching_whitespace_len,
2729 );
2730 edit_ranges.push(start..end);
2731 }
2732 // If this line does not begin with the line comment prefix, then record
2733 // the position where the prefix should be inserted.
2734 else {
2735 all_selection_lines_are_comments = false;
2736 edit_ranges.push(start..start);
2737 }
2738 }
2739
2740 if !edit_ranges.is_empty() {
2741 if all_selection_lines_are_comments {
2742 buffer.edit(edit_ranges.iter().cloned(), "", cx);
2743 } else {
2744 let min_column = edit_ranges.iter().map(|r| r.start.column).min().unwrap();
2745 let edit_ranges = edit_ranges.iter().map(|range| {
2746 let position = Point::new(range.start.row, min_column);
2747 position..position
2748 });
2749 buffer.edit(edit_ranges, &full_comment_prefix, cx);
2750 }
2751 }
2752 }
2753 });
2754
2755 self.update_selections(
2756 self.local_selections::<usize>(cx),
2757 Some(Autoscroll::Fit),
2758 cx,
2759 );
2760 self.end_transaction(cx);
2761 }
2762
2763 pub fn select_larger_syntax_node(
2764 &mut self,
2765 _: &SelectLargerSyntaxNode,
2766 cx: &mut ViewContext<Self>,
2767 ) {
2768 let old_selections = self.local_selections::<usize>(cx).into_boxed_slice();
2769 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2770 let buffer = self.buffer.read(cx).snapshot(cx);
2771
2772 let mut stack = mem::take(&mut self.select_larger_syntax_node_stack);
2773 let mut selected_larger_node = false;
2774 let mut new_selections = old_selections
2775 .iter()
2776 .map(|selection| {
2777 let old_range = selection.start..selection.end;
2778 let mut new_range = old_range.clone();
2779 while let Some(containing_range) =
2780 buffer.range_for_syntax_ancestor(new_range.clone())
2781 {
2782 new_range = containing_range;
2783 if !display_map.intersects_fold(new_range.start)
2784 && !display_map.intersects_fold(new_range.end)
2785 {
2786 break;
2787 }
2788 }
2789
2790 selected_larger_node |= new_range != old_range;
2791 Selection {
2792 id: selection.id,
2793 start: new_range.start,
2794 end: new_range.end,
2795 goal: SelectionGoal::None,
2796 reversed: selection.reversed,
2797 }
2798 })
2799 .collect::<Vec<_>>();
2800
2801 if selected_larger_node {
2802 stack.push(old_selections);
2803 new_selections.sort_unstable_by_key(|selection| selection.start);
2804 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
2805 }
2806 self.select_larger_syntax_node_stack = stack;
2807 }
2808
2809 pub fn select_smaller_syntax_node(
2810 &mut self,
2811 _: &SelectSmallerSyntaxNode,
2812 cx: &mut ViewContext<Self>,
2813 ) {
2814 let mut stack = mem::take(&mut self.select_larger_syntax_node_stack);
2815 if let Some(selections) = stack.pop() {
2816 self.update_selections(selections.to_vec(), Some(Autoscroll::Fit), cx);
2817 }
2818 self.select_larger_syntax_node_stack = stack;
2819 }
2820
2821 pub fn move_to_enclosing_bracket(
2822 &mut self,
2823 _: &MoveToEnclosingBracket,
2824 cx: &mut ViewContext<Self>,
2825 ) {
2826 let mut selections = self.local_selections::<usize>(cx);
2827 let buffer = self.buffer.read(cx).snapshot(cx);
2828 for selection in &mut selections {
2829 if let Some((open_range, close_range)) =
2830 buffer.enclosing_bracket_ranges(selection.start..selection.end)
2831 {
2832 let close_range = close_range.to_inclusive();
2833 let destination = if close_range.contains(&selection.start)
2834 && close_range.contains(&selection.end)
2835 {
2836 open_range.end
2837 } else {
2838 *close_range.start()
2839 };
2840 selection.start = destination;
2841 selection.end = destination;
2842 }
2843 }
2844
2845 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2846 }
2847
2848 pub fn show_next_diagnostic(&mut self, _: &ShowNextDiagnostic, cx: &mut ViewContext<Self>) {
2849 let buffer = self.buffer.read(cx).snapshot(cx);
2850 let selection = self.newest_selection::<usize>(&buffer);
2851 let active_primary_range = self.active_diagnostics.as_ref().map(|active_diagnostics| {
2852 active_diagnostics
2853 .primary_range
2854 .to_offset(&buffer)
2855 .to_inclusive()
2856 });
2857 let mut search_start = if let Some(active_primary_range) = active_primary_range.as_ref() {
2858 if active_primary_range.contains(&selection.head()) {
2859 *active_primary_range.end()
2860 } else {
2861 selection.head()
2862 }
2863 } else {
2864 selection.head()
2865 };
2866
2867 loop {
2868 let next_group = buffer
2869 .diagnostics_in_range::<_, usize>(search_start..buffer.len())
2870 .find_map(|(provider_name, entry)| {
2871 if entry.diagnostic.is_primary
2872 && !entry.range.is_empty()
2873 && Some(entry.range.end) != active_primary_range.as_ref().map(|r| *r.end())
2874 {
2875 Some((provider_name, entry.range, entry.diagnostic.group_id))
2876 } else {
2877 None
2878 }
2879 });
2880
2881 if let Some((provider_name, primary_range, group_id)) = next_group {
2882 self.activate_diagnostics(provider_name, group_id, cx);
2883 self.update_selections(
2884 vec![Selection {
2885 id: selection.id,
2886 start: primary_range.start,
2887 end: primary_range.start,
2888 reversed: false,
2889 goal: SelectionGoal::None,
2890 }],
2891 Some(Autoscroll::Center),
2892 cx,
2893 );
2894 break;
2895 } else if search_start == 0 {
2896 break;
2897 } else {
2898 // Cycle around to the start of the buffer.
2899 search_start = 0;
2900 }
2901 }
2902 }
2903
2904 fn refresh_active_diagnostics(&mut self, cx: &mut ViewContext<Editor>) {
2905 if let Some(active_diagnostics) = self.active_diagnostics.as_mut() {
2906 let buffer = self.buffer.read(cx).snapshot(cx);
2907 let primary_range_start = active_diagnostics.primary_range.start.to_offset(&buffer);
2908 let is_valid = buffer
2909 .diagnostics_in_range::<_, usize>(active_diagnostics.primary_range.clone())
2910 .any(|(_, entry)| {
2911 entry.diagnostic.is_primary
2912 && !entry.range.is_empty()
2913 && entry.range.start == primary_range_start
2914 && entry.diagnostic.message == active_diagnostics.primary_message
2915 });
2916
2917 if is_valid != active_diagnostics.is_valid {
2918 active_diagnostics.is_valid = is_valid;
2919 let mut new_styles = HashMap::default();
2920 for (block_id, diagnostic) in &active_diagnostics.blocks {
2921 new_styles.insert(
2922 *block_id,
2923 diagnostic_block_renderer(
2924 diagnostic.clone(),
2925 is_valid,
2926 self.build_settings.clone(),
2927 ),
2928 );
2929 }
2930 self.display_map
2931 .update(cx, |display_map, _| display_map.replace_blocks(new_styles));
2932 }
2933 }
2934 }
2935
2936 fn activate_diagnostics(
2937 &mut self,
2938 provider_name: &str,
2939 group_id: usize,
2940 cx: &mut ViewContext<Self>,
2941 ) {
2942 self.dismiss_diagnostics(cx);
2943 self.active_diagnostics = self.display_map.update(cx, |display_map, cx| {
2944 let buffer = self.buffer.read(cx).snapshot(cx);
2945
2946 let mut primary_range = None;
2947 let mut primary_message = None;
2948 let mut group_end = Point::zero();
2949 let diagnostic_group = buffer
2950 .diagnostic_group::<Point>(provider_name, group_id)
2951 .map(|entry| {
2952 if entry.range.end > group_end {
2953 group_end = entry.range.end;
2954 }
2955 if entry.diagnostic.is_primary {
2956 primary_range = Some(entry.range.clone());
2957 primary_message = Some(entry.diagnostic.message.clone());
2958 }
2959 entry
2960 })
2961 .collect::<Vec<_>>();
2962 let primary_range = primary_range.unwrap();
2963 let primary_message = primary_message.unwrap();
2964 let primary_range =
2965 buffer.anchor_after(primary_range.start)..buffer.anchor_before(primary_range.end);
2966
2967 let blocks = display_map
2968 .insert_blocks(
2969 diagnostic_group.iter().map(|entry| {
2970 let build_settings = self.build_settings.clone();
2971 let diagnostic = entry.diagnostic.clone();
2972 let message_height = diagnostic.message.lines().count() as u8;
2973
2974 BlockProperties {
2975 position: buffer.anchor_after(entry.range.start),
2976 height: message_height,
2977 render: diagnostic_block_renderer(diagnostic, true, build_settings),
2978 disposition: BlockDisposition::Below,
2979 }
2980 }),
2981 cx,
2982 )
2983 .into_iter()
2984 .zip(diagnostic_group.into_iter().map(|entry| entry.diagnostic))
2985 .collect();
2986
2987 Some(ActiveDiagnosticGroup {
2988 primary_range,
2989 primary_message,
2990 blocks,
2991 is_valid: true,
2992 })
2993 });
2994 }
2995
2996 fn dismiss_diagnostics(&mut self, cx: &mut ViewContext<Self>) {
2997 if let Some(active_diagnostic_group) = self.active_diagnostics.take() {
2998 self.display_map.update(cx, |display_map, cx| {
2999 display_map.remove_blocks(active_diagnostic_group.blocks.into_keys().collect(), cx);
3000 });
3001 cx.notify();
3002 }
3003 }
3004
3005 fn build_columnar_selection(
3006 &mut self,
3007 display_map: &DisplaySnapshot,
3008 row: u32,
3009 columns: &Range<u32>,
3010 reversed: bool,
3011 ) -> Option<Selection<Point>> {
3012 let is_empty = columns.start == columns.end;
3013 let line_len = display_map.line_len(row);
3014 if columns.start < line_len || (is_empty && columns.start == line_len) {
3015 let start = DisplayPoint::new(row, columns.start);
3016 let end = DisplayPoint::new(row, cmp::min(columns.end, line_len));
3017 Some(Selection {
3018 id: post_inc(&mut self.next_selection_id),
3019 start: start.to_point(display_map),
3020 end: end.to_point(display_map),
3021 reversed,
3022 goal: SelectionGoal::ColumnRange {
3023 start: columns.start,
3024 end: columns.end,
3025 },
3026 })
3027 } else {
3028 None
3029 }
3030 }
3031
3032 pub fn local_selections_in_range(
3033 &self,
3034 range: Range<Anchor>,
3035 display_map: &DisplaySnapshot,
3036 ) -> Vec<Selection<Point>> {
3037 let buffer = &display_map.buffer_snapshot;
3038
3039 let start_ix = match self
3040 .selections
3041 .binary_search_by(|probe| probe.end.cmp(&range.start, &buffer).unwrap())
3042 {
3043 Ok(ix) | Err(ix) => ix,
3044 };
3045 let end_ix = match self
3046 .selections
3047 .binary_search_by(|probe| probe.start.cmp(&range.end, &buffer).unwrap())
3048 {
3049 Ok(ix) => ix + 1,
3050 Err(ix) => ix,
3051 };
3052
3053 fn point_selection(
3054 selection: &Selection<Anchor>,
3055 buffer: &MultiBufferSnapshot,
3056 ) -> Selection<Point> {
3057 let start = selection.start.to_point(&buffer);
3058 let end = selection.end.to_point(&buffer);
3059 Selection {
3060 id: selection.id,
3061 start,
3062 end,
3063 reversed: selection.reversed,
3064 goal: selection.goal,
3065 }
3066 }
3067
3068 self.selections[start_ix..end_ix]
3069 .iter()
3070 .chain(
3071 self.pending_selection
3072 .as_ref()
3073 .map(|pending| &pending.selection),
3074 )
3075 .map(|s| point_selection(s, &buffer))
3076 .collect()
3077 }
3078
3079 pub fn local_selections<'a, D>(&self, cx: &'a AppContext) -> Vec<Selection<D>>
3080 where
3081 D: 'a + TextDimension + Ord + Sub<D, Output = D>,
3082 {
3083 let buffer = self.buffer.read(cx).snapshot(cx);
3084 let mut selections = self
3085 .resolve_selections::<D, _>(self.selections.iter(), &buffer)
3086 .peekable();
3087
3088 let mut pending_selection = self.pending_selection::<D>(&buffer);
3089
3090 iter::from_fn(move || {
3091 if let Some(pending) = pending_selection.as_mut() {
3092 while let Some(next_selection) = selections.peek() {
3093 if pending.start <= next_selection.end && pending.end >= next_selection.start {
3094 let next_selection = selections.next().unwrap();
3095 if next_selection.start < pending.start {
3096 pending.start = next_selection.start;
3097 }
3098 if next_selection.end > pending.end {
3099 pending.end = next_selection.end;
3100 }
3101 } else if next_selection.end < pending.start {
3102 return selections.next();
3103 } else {
3104 break;
3105 }
3106 }
3107
3108 pending_selection.take()
3109 } else {
3110 selections.next()
3111 }
3112 })
3113 .collect()
3114 }
3115
3116 pub fn local_anchor_selections(&self) -> &Arc<[Selection<Anchor>]> {
3117 &self.selections
3118 }
3119
3120 fn resolve_selections<'a, D, I>(
3121 &self,
3122 selections: I,
3123 snapshot: &MultiBufferSnapshot,
3124 ) -> impl 'a + Iterator<Item = Selection<D>>
3125 where
3126 D: TextDimension + Ord + Sub<D, Output = D>,
3127 I: 'a + IntoIterator<Item = &'a Selection<Anchor>>,
3128 {
3129 let (to_summarize, selections) = selections.into_iter().tee();
3130 let mut summaries = snapshot
3131 .summaries_for_anchors::<D, _>(to_summarize.flat_map(|s| [&s.start, &s.end]))
3132 .into_iter();
3133 selections.map(move |s| Selection {
3134 id: s.id,
3135 start: summaries.next().unwrap(),
3136 end: summaries.next().unwrap(),
3137 reversed: s.reversed,
3138 goal: s.goal,
3139 })
3140 }
3141
3142 fn pending_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
3143 &self,
3144 snapshot: &MultiBufferSnapshot,
3145 ) -> Option<Selection<D>> {
3146 self.pending_selection
3147 .as_ref()
3148 .map(|pending| self.resolve_selection(&pending.selection, &snapshot))
3149 }
3150
3151 fn resolve_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
3152 &self,
3153 selection: &Selection<Anchor>,
3154 buffer: &MultiBufferSnapshot,
3155 ) -> Selection<D> {
3156 Selection {
3157 id: selection.id,
3158 start: selection.start.summary::<D>(&buffer),
3159 end: selection.end.summary::<D>(&buffer),
3160 reversed: selection.reversed,
3161 goal: selection.goal,
3162 }
3163 }
3164
3165 fn selection_count<'a>(&self) -> usize {
3166 let mut count = self.selections.len();
3167 if self.pending_selection.is_some() {
3168 count += 1;
3169 }
3170 count
3171 }
3172
3173 pub fn oldest_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
3174 &self,
3175 snapshot: &MultiBufferSnapshot,
3176 ) -> Selection<D> {
3177 self.selections
3178 .iter()
3179 .min_by_key(|s| s.id)
3180 .map(|selection| self.resolve_selection(selection, snapshot))
3181 .or_else(|| self.pending_selection(snapshot))
3182 .unwrap()
3183 }
3184
3185 pub fn newest_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
3186 &self,
3187 snapshot: &MultiBufferSnapshot,
3188 ) -> Selection<D> {
3189 self.pending_selection(snapshot)
3190 .or_else(|| {
3191 self.selections
3192 .iter()
3193 .max_by_key(|s| s.id)
3194 .map(|selection| self.resolve_selection(selection, snapshot))
3195 })
3196 .unwrap()
3197 }
3198
3199 pub fn update_selections<T>(
3200 &mut self,
3201 mut selections: Vec<Selection<T>>,
3202 autoscroll: Option<Autoscroll>,
3203 cx: &mut ViewContext<Self>,
3204 ) where
3205 T: ToOffset + ToPoint + Ord + std::marker::Copy + std::fmt::Debug,
3206 {
3207 // Merge overlapping selections.
3208 let buffer = self.buffer.read(cx).snapshot(cx);
3209 let mut i = 1;
3210 while i < selections.len() {
3211 if selections[i - 1].end >= selections[i].start {
3212 let removed = selections.remove(i);
3213 if removed.start < selections[i - 1].start {
3214 selections[i - 1].start = removed.start;
3215 }
3216 if removed.end > selections[i - 1].end {
3217 selections[i - 1].end = removed.end;
3218 }
3219 } else {
3220 i += 1;
3221 }
3222 }
3223
3224 self.pending_selection = None;
3225 self.add_selections_state = None;
3226 self.select_next_state = None;
3227 self.select_larger_syntax_node_stack.clear();
3228 while let Some(autoclose_pair) = self.autoclose_stack.last() {
3229 let all_selections_inside_autoclose_ranges =
3230 if selections.len() == autoclose_pair.ranges.len() {
3231 selections
3232 .iter()
3233 .zip(autoclose_pair.ranges.iter().map(|r| r.to_point(&buffer)))
3234 .all(|(selection, autoclose_range)| {
3235 let head = selection.head().to_point(&buffer);
3236 autoclose_range.start <= head && autoclose_range.end >= head
3237 })
3238 } else {
3239 false
3240 };
3241
3242 if all_selections_inside_autoclose_ranges {
3243 break;
3244 } else {
3245 self.autoclose_stack.pop();
3246 }
3247 }
3248
3249 if let Some(autoscroll) = autoscroll {
3250 self.request_autoscroll(autoscroll, cx);
3251 }
3252 self.pause_cursor_blinking(cx);
3253
3254 self.set_selections(
3255 Arc::from_iter(selections.into_iter().map(|selection| {
3256 let end_bias = if selection.end > selection.start {
3257 Bias::Left
3258 } else {
3259 Bias::Right
3260 };
3261 Selection {
3262 id: selection.id,
3263 start: buffer.anchor_after(selection.start),
3264 end: buffer.anchor_at(selection.end, end_bias),
3265 reversed: selection.reversed,
3266 goal: selection.goal,
3267 }
3268 })),
3269 cx,
3270 );
3271 }
3272
3273 fn set_selections(&mut self, selections: Arc<[Selection<Anchor>]>, cx: &mut ViewContext<Self>) {
3274 self.selections = selections;
3275 self.buffer.update(cx, |buffer, cx| {
3276 buffer.set_active_selections(&self.selections, cx)
3277 });
3278 }
3279
3280 fn request_autoscroll(&mut self, autoscroll: Autoscroll, cx: &mut ViewContext<Self>) {
3281 self.autoscroll_request = Some(autoscroll);
3282 cx.notify();
3283 }
3284
3285 fn start_transaction(&mut self, cx: &mut ViewContext<Self>) {
3286 self.start_transaction_at(Instant::now(), cx);
3287 }
3288
3289 fn start_transaction_at(&mut self, now: Instant, cx: &mut ViewContext<Self>) {
3290 self.end_selection(cx);
3291 if let Some(tx_id) = self
3292 .buffer
3293 .update(cx, |buffer, cx| buffer.start_transaction_at(now, cx))
3294 {
3295 self.selection_history
3296 .insert(tx_id, (self.selections.clone(), None));
3297 }
3298 }
3299
3300 fn end_transaction(&mut self, cx: &mut ViewContext<Self>) {
3301 self.end_transaction_at(Instant::now(), cx);
3302 }
3303
3304 fn end_transaction_at(&mut self, now: Instant, cx: &mut ViewContext<Self>) {
3305 if let Some(tx_id) = self
3306 .buffer
3307 .update(cx, |buffer, cx| buffer.end_transaction_at(now, cx))
3308 {
3309 self.selection_history.get_mut(&tx_id).unwrap().1 = Some(self.selections.clone());
3310 }
3311 }
3312
3313 pub fn page_up(&mut self, _: &PageUp, _: &mut ViewContext<Self>) {
3314 log::info!("Editor::page_up");
3315 }
3316
3317 pub fn page_down(&mut self, _: &PageDown, _: &mut ViewContext<Self>) {
3318 log::info!("Editor::page_down");
3319 }
3320
3321 pub fn fold(&mut self, _: &Fold, cx: &mut ViewContext<Self>) {
3322 let mut fold_ranges = Vec::new();
3323
3324 let selections = self.local_selections::<Point>(cx);
3325 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3326 for selection in selections {
3327 let range = selection.display_range(&display_map).sorted();
3328 let buffer_start_row = range.start.to_point(&display_map).row;
3329
3330 for row in (0..=range.end.row()).rev() {
3331 if self.is_line_foldable(&display_map, row) && !display_map.is_line_folded(row) {
3332 let fold_range = self.foldable_range_for_line(&display_map, row);
3333 if fold_range.end.row >= buffer_start_row {
3334 fold_ranges.push(fold_range);
3335 if row <= range.start.row() {
3336 break;
3337 }
3338 }
3339 }
3340 }
3341 }
3342
3343 self.fold_ranges(fold_ranges, cx);
3344 }
3345
3346 pub fn unfold(&mut self, _: &Unfold, cx: &mut ViewContext<Self>) {
3347 let selections = self.local_selections::<Point>(cx);
3348 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3349 let buffer = &display_map.buffer_snapshot;
3350 let ranges = selections
3351 .iter()
3352 .map(|s| {
3353 let range = s.display_range(&display_map).sorted();
3354 let mut start = range.start.to_point(&display_map);
3355 let mut end = range.end.to_point(&display_map);
3356 start.column = 0;
3357 end.column = buffer.line_len(end.row);
3358 start..end
3359 })
3360 .collect::<Vec<_>>();
3361 self.unfold_ranges(ranges, cx);
3362 }
3363
3364 fn is_line_foldable(&self, display_map: &DisplaySnapshot, display_row: u32) -> bool {
3365 let max_point = display_map.max_point();
3366 if display_row >= max_point.row() {
3367 false
3368 } else {
3369 let (start_indent, is_blank) = display_map.line_indent(display_row);
3370 if is_blank {
3371 false
3372 } else {
3373 for display_row in display_row + 1..=max_point.row() {
3374 let (indent, is_blank) = display_map.line_indent(display_row);
3375 if !is_blank {
3376 return indent > start_indent;
3377 }
3378 }
3379 false
3380 }
3381 }
3382 }
3383
3384 fn foldable_range_for_line(
3385 &self,
3386 display_map: &DisplaySnapshot,
3387 start_row: u32,
3388 ) -> Range<Point> {
3389 let max_point = display_map.max_point();
3390
3391 let (start_indent, _) = display_map.line_indent(start_row);
3392 let start = DisplayPoint::new(start_row, display_map.line_len(start_row));
3393 let mut end = None;
3394 for row in start_row + 1..=max_point.row() {
3395 let (indent, is_blank) = display_map.line_indent(row);
3396 if !is_blank && indent <= start_indent {
3397 end = Some(DisplayPoint::new(row - 1, display_map.line_len(row - 1)));
3398 break;
3399 }
3400 }
3401
3402 let end = end.unwrap_or(max_point);
3403 return start.to_point(display_map)..end.to_point(display_map);
3404 }
3405
3406 pub fn fold_selected_ranges(&mut self, _: &FoldSelectedRanges, cx: &mut ViewContext<Self>) {
3407 let selections = self.local_selections::<Point>(cx);
3408 let ranges = selections.into_iter().map(|s| s.start..s.end);
3409 self.fold_ranges(ranges, cx);
3410 }
3411
3412 fn fold_ranges<T: ToOffset>(
3413 &mut self,
3414 ranges: impl IntoIterator<Item = Range<T>>,
3415 cx: &mut ViewContext<Self>,
3416 ) {
3417 let mut ranges = ranges.into_iter().peekable();
3418 if ranges.peek().is_some() {
3419 self.display_map.update(cx, |map, cx| map.fold(ranges, cx));
3420 self.request_autoscroll(Autoscroll::Fit, cx);
3421 cx.notify();
3422 }
3423 }
3424
3425 fn unfold_ranges<T: ToOffset>(&mut self, ranges: Vec<Range<T>>, cx: &mut ViewContext<Self>) {
3426 if !ranges.is_empty() {
3427 self.display_map
3428 .update(cx, |map, cx| map.unfold(ranges, cx));
3429 self.request_autoscroll(Autoscroll::Fit, cx);
3430 cx.notify();
3431 }
3432 }
3433
3434 pub fn insert_blocks(
3435 &mut self,
3436 blocks: impl IntoIterator<Item = BlockProperties<Anchor>>,
3437 cx: &mut ViewContext<Self>,
3438 ) -> Vec<BlockId> {
3439 let blocks = self
3440 .display_map
3441 .update(cx, |display_map, cx| display_map.insert_blocks(blocks, cx));
3442 self.request_autoscroll(Autoscroll::Fit, cx);
3443 blocks
3444 }
3445
3446 pub fn replace_blocks(
3447 &mut self,
3448 blocks: HashMap<BlockId, RenderBlock>,
3449 cx: &mut ViewContext<Self>,
3450 ) {
3451 self.display_map
3452 .update(cx, |display_map, _| display_map.replace_blocks(blocks));
3453 self.request_autoscroll(Autoscroll::Fit, cx);
3454 }
3455
3456 pub fn remove_blocks(&mut self, block_ids: HashSet<BlockId>, cx: &mut ViewContext<Self>) {
3457 self.display_map.update(cx, |display_map, cx| {
3458 display_map.remove_blocks(block_ids, cx)
3459 });
3460 }
3461
3462 pub fn longest_row(&self, cx: &mut MutableAppContext) -> u32 {
3463 self.display_map
3464 .update(cx, |map, cx| map.snapshot(cx))
3465 .longest_row()
3466 }
3467
3468 pub fn max_point(&self, cx: &mut MutableAppContext) -> DisplayPoint {
3469 self.display_map
3470 .update(cx, |map, cx| map.snapshot(cx))
3471 .max_point()
3472 }
3473
3474 pub fn text(&self, cx: &AppContext) -> String {
3475 self.buffer.read(cx).read(cx).text()
3476 }
3477
3478 pub fn display_text(&self, cx: &mut MutableAppContext) -> String {
3479 self.display_map
3480 .update(cx, |map, cx| map.snapshot(cx))
3481 .text()
3482 }
3483
3484 pub fn set_wrap_width(&self, width: Option<f32>, cx: &mut MutableAppContext) -> bool {
3485 self.display_map
3486 .update(cx, |map, cx| map.set_wrap_width(width, cx))
3487 }
3488
3489 pub fn set_highlighted_row(&mut self, row: Option<u32>) {
3490 self.highlighted_row = row;
3491 }
3492
3493 pub fn highlighted_row(&mut self) -> Option<u32> {
3494 self.highlighted_row
3495 }
3496
3497 fn next_blink_epoch(&mut self) -> usize {
3498 self.blink_epoch += 1;
3499 self.blink_epoch
3500 }
3501
3502 fn pause_cursor_blinking(&mut self, cx: &mut ViewContext<Self>) {
3503 self.show_local_cursors = true;
3504 cx.notify();
3505
3506 let epoch = self.next_blink_epoch();
3507 cx.spawn(|this, mut cx| {
3508 let this = this.downgrade();
3509 async move {
3510 Timer::after(CURSOR_BLINK_INTERVAL).await;
3511 if let Some(this) = cx.read(|cx| this.upgrade(cx)) {
3512 this.update(&mut cx, |this, cx| this.resume_cursor_blinking(epoch, cx))
3513 }
3514 }
3515 })
3516 .detach();
3517 }
3518
3519 fn resume_cursor_blinking(&mut self, epoch: usize, cx: &mut ViewContext<Self>) {
3520 if epoch == self.blink_epoch {
3521 self.blinking_paused = false;
3522 self.blink_cursors(epoch, cx);
3523 }
3524 }
3525
3526 fn blink_cursors(&mut self, epoch: usize, cx: &mut ViewContext<Self>) {
3527 if epoch == self.blink_epoch && self.focused && !self.blinking_paused {
3528 self.show_local_cursors = !self.show_local_cursors;
3529 cx.notify();
3530
3531 let epoch = self.next_blink_epoch();
3532 cx.spawn(|this, mut cx| {
3533 let this = this.downgrade();
3534 async move {
3535 Timer::after(CURSOR_BLINK_INTERVAL).await;
3536 if let Some(this) = cx.read(|cx| this.upgrade(cx)) {
3537 this.update(&mut cx, |this, cx| this.blink_cursors(epoch, cx));
3538 }
3539 }
3540 })
3541 .detach();
3542 }
3543 }
3544
3545 pub fn show_local_cursors(&self) -> bool {
3546 self.show_local_cursors
3547 }
3548
3549 fn on_buffer_changed(&mut self, _: ModelHandle<MultiBuffer>, cx: &mut ViewContext<Self>) {
3550 self.refresh_active_diagnostics(cx);
3551 cx.notify();
3552 }
3553
3554 fn on_buffer_event(
3555 &mut self,
3556 _: ModelHandle<MultiBuffer>,
3557 event: &language::Event,
3558 cx: &mut ViewContext<Self>,
3559 ) {
3560 match event {
3561 language::Event::Edited => cx.emit(Event::Edited),
3562 language::Event::Dirtied => cx.emit(Event::Dirtied),
3563 language::Event::Saved => cx.emit(Event::Saved),
3564 language::Event::FileHandleChanged => cx.emit(Event::FileHandleChanged),
3565 language::Event::Reloaded => cx.emit(Event::FileHandleChanged),
3566 language::Event::Closed => cx.emit(Event::Closed),
3567 _ => {}
3568 }
3569 }
3570
3571 fn on_display_map_changed(&mut self, _: ModelHandle<DisplayMap>, cx: &mut ViewContext<Self>) {
3572 cx.notify();
3573 }
3574}
3575
3576impl EditorSnapshot {
3577 pub fn is_focused(&self) -> bool {
3578 self.is_focused
3579 }
3580
3581 pub fn placeholder_text(&self) -> Option<&Arc<str>> {
3582 self.placeholder_text.as_ref()
3583 }
3584
3585 pub fn scroll_position(&self) -> Vector2F {
3586 compute_scroll_position(
3587 &self.display_snapshot,
3588 self.scroll_position,
3589 &self.scroll_top_anchor,
3590 )
3591 }
3592}
3593
3594impl Deref for EditorSnapshot {
3595 type Target = DisplaySnapshot;
3596
3597 fn deref(&self) -> &Self::Target {
3598 &self.display_snapshot
3599 }
3600}
3601
3602impl EditorSettings {
3603 #[cfg(any(test, feature = "test-support"))]
3604 pub fn test(cx: &AppContext) -> Self {
3605 Self {
3606 tab_size: 4,
3607 soft_wrap: SoftWrap::None,
3608 style: {
3609 let font_cache: &gpui::FontCache = cx.font_cache();
3610 let font_family_name = Arc::from("Monaco");
3611 let font_properties = Default::default();
3612 let font_family_id = font_cache.load_family(&[&font_family_name]).unwrap();
3613 let font_id = font_cache
3614 .select_font(font_family_id, &font_properties)
3615 .unwrap();
3616 EditorStyle {
3617 text: gpui::fonts::TextStyle {
3618 font_family_name,
3619 font_family_id,
3620 font_id,
3621 font_size: 14.,
3622 color: gpui::color::Color::from_u32(0xff0000ff),
3623 font_properties,
3624 underline: None,
3625 },
3626 placeholder_text: None,
3627 background: Default::default(),
3628 gutter_background: Default::default(),
3629 active_line_background: Default::default(),
3630 highlighted_line_background: Default::default(),
3631 line_number: Default::default(),
3632 line_number_active: Default::default(),
3633 selection: Default::default(),
3634 guest_selections: Default::default(),
3635 syntax: Default::default(),
3636 error_diagnostic: Default::default(),
3637 invalid_error_diagnostic: Default::default(),
3638 warning_diagnostic: Default::default(),
3639 invalid_warning_diagnostic: Default::default(),
3640 information_diagnostic: Default::default(),
3641 invalid_information_diagnostic: Default::default(),
3642 hint_diagnostic: Default::default(),
3643 invalid_hint_diagnostic: Default::default(),
3644 }
3645 },
3646 }
3647 }
3648}
3649
3650fn compute_scroll_position(
3651 snapshot: &DisplaySnapshot,
3652 mut scroll_position: Vector2F,
3653 scroll_top_anchor: &Anchor,
3654) -> Vector2F {
3655 let scroll_top = scroll_top_anchor.to_display_point(snapshot).row() as f32;
3656 scroll_position.set_y(scroll_top + scroll_position.y());
3657 scroll_position
3658}
3659
3660#[derive(Copy, Clone)]
3661pub enum Event {
3662 Activate,
3663 Edited,
3664 Blurred,
3665 Dirtied,
3666 Saved,
3667 FileHandleChanged,
3668 Closed,
3669}
3670
3671impl Entity for Editor {
3672 type Event = Event;
3673}
3674
3675impl View for Editor {
3676 fn render(&mut self, cx: &mut RenderContext<Self>) -> ElementBox {
3677 let settings = (self.build_settings)(cx);
3678 self.display_map.update(cx, |map, cx| {
3679 map.set_font(
3680 settings.style.text.font_id,
3681 settings.style.text.font_size,
3682 cx,
3683 )
3684 });
3685 EditorElement::new(self.handle.clone(), settings).boxed()
3686 }
3687
3688 fn ui_name() -> &'static str {
3689 "Editor"
3690 }
3691
3692 fn on_focus(&mut self, cx: &mut ViewContext<Self>) {
3693 self.focused = true;
3694 self.blink_cursors(self.blink_epoch, cx);
3695 self.buffer.update(cx, |buffer, cx| {
3696 buffer.set_active_selections(&self.selections, cx)
3697 });
3698 }
3699
3700 fn on_blur(&mut self, cx: &mut ViewContext<Self>) {
3701 self.focused = false;
3702 self.show_local_cursors = false;
3703 self.buffer
3704 .update(cx, |buffer, cx| buffer.remove_active_selections(cx));
3705 cx.emit(Event::Blurred);
3706 cx.notify();
3707 }
3708
3709 fn keymap_context(&self, _: &AppContext) -> gpui::keymap::Context {
3710 let mut cx = Self::default_keymap_context();
3711 let mode = match self.mode {
3712 EditorMode::SingleLine => "single_line",
3713 EditorMode::AutoHeight { .. } => "auto_height",
3714 EditorMode::Full => "full",
3715 };
3716 cx.map.insert("mode".into(), mode.into());
3717 cx
3718 }
3719}
3720
3721impl<T: ToPoint + ToOffset> SelectionExt for Selection<T> {
3722 fn point_range(&self, buffer: &MultiBufferSnapshot) -> Range<Point> {
3723 let start = self.start.to_point(buffer);
3724 let end = self.end.to_point(buffer);
3725 if self.reversed {
3726 end..start
3727 } else {
3728 start..end
3729 }
3730 }
3731
3732 fn offset_range(&self, buffer: &MultiBufferSnapshot) -> Range<usize> {
3733 let start = self.start.to_offset(buffer);
3734 let end = self.end.to_offset(buffer);
3735 if self.reversed {
3736 end..start
3737 } else {
3738 start..end
3739 }
3740 }
3741
3742 fn display_range(&self, map: &DisplaySnapshot) -> Range<DisplayPoint> {
3743 let start = self
3744 .start
3745 .to_point(&map.buffer_snapshot)
3746 .to_display_point(map);
3747 let end = self
3748 .end
3749 .to_point(&map.buffer_snapshot)
3750 .to_display_point(map);
3751 if self.reversed {
3752 end..start
3753 } else {
3754 start..end
3755 }
3756 }
3757
3758 fn spanned_rows(
3759 &self,
3760 include_end_if_at_line_start: bool,
3761 map: &DisplaySnapshot,
3762 ) -> Range<u32> {
3763 let start = self.start.to_point(&map.buffer_snapshot);
3764 let mut end = self.end.to_point(&map.buffer_snapshot);
3765 if !include_end_if_at_line_start
3766 && end.row != map.buffer_snapshot.max_point().row
3767 && start.row != end.row
3768 && end.column == 0
3769 {
3770 end.row -= 1;
3771 }
3772
3773 let buffer_start = map.prev_line_boundary(start).0;
3774 let buffer_end = map.next_line_boundary(end).0;
3775 buffer_start.row..buffer_end.row + 1
3776 }
3777}
3778
3779pub fn diagnostic_block_renderer(
3780 diagnostic: Diagnostic,
3781 is_valid: bool,
3782 build_settings: BuildSettings,
3783) -> RenderBlock {
3784 Arc::new(move |cx: &BlockContext| {
3785 let settings = build_settings(cx);
3786 let mut text_style = settings.style.text.clone();
3787 text_style.color = diagnostic_style(diagnostic.severity, is_valid, &settings.style).text;
3788 Text::new(diagnostic.message.clone(), text_style)
3789 .contained()
3790 .with_margin_left(cx.anchor_x)
3791 .boxed()
3792 })
3793}
3794
3795pub fn diagnostic_header_renderer(
3796 buffer: ModelHandle<Buffer>,
3797 diagnostic: Diagnostic,
3798 is_valid: bool,
3799 build_settings: BuildSettings,
3800) -> RenderBlock {
3801 Arc::new(move |cx| {
3802 let settings = build_settings(cx);
3803 let mut text_style = settings.style.text.clone();
3804 text_style.color = diagnostic_style(diagnostic.severity, is_valid, &settings.style).text;
3805 let file_path = if let Some(file) = buffer.read(&**cx).file() {
3806 file.path().to_string_lossy().to_string()
3807 } else {
3808 "untitled".to_string()
3809 };
3810
3811 Flex::column()
3812 .with_child(Label::new(diagnostic.message.clone(), text_style).boxed())
3813 .with_child(Label::new(file_path, settings.style.text.clone()).boxed())
3814 .boxed()
3815 })
3816}
3817
3818pub fn context_header_renderer(build_settings: BuildSettings) -> RenderBlock {
3819 Arc::new(move |cx| {
3820 let settings = build_settings(cx);
3821 let text_style = settings.style.text.clone();
3822 Label::new("...".to_string(), text_style).boxed()
3823 })
3824}
3825
3826pub fn diagnostic_style(
3827 severity: DiagnosticSeverity,
3828 valid: bool,
3829 style: &EditorStyle,
3830) -> DiagnosticStyle {
3831 match (severity, valid) {
3832 (DiagnosticSeverity::ERROR, true) => style.error_diagnostic,
3833 (DiagnosticSeverity::ERROR, false) => style.invalid_error_diagnostic,
3834 (DiagnosticSeverity::WARNING, true) => style.warning_diagnostic,
3835 (DiagnosticSeverity::WARNING, false) => style.invalid_warning_diagnostic,
3836 (DiagnosticSeverity::INFORMATION, true) => style.information_diagnostic,
3837 (DiagnosticSeverity::INFORMATION, false) => style.invalid_information_diagnostic,
3838 (DiagnosticSeverity::HINT, true) => style.hint_diagnostic,
3839 (DiagnosticSeverity::HINT, false) => style.invalid_hint_diagnostic,
3840 _ => Default::default(),
3841 }
3842}
3843
3844pub fn settings_builder(
3845 buffer: WeakModelHandle<MultiBuffer>,
3846 settings: watch::Receiver<workspace::Settings>,
3847) -> BuildSettings {
3848 Arc::new(move |cx| {
3849 let settings = settings.borrow();
3850 let font_cache = cx.font_cache();
3851 let font_family_id = settings.buffer_font_family;
3852 let font_family_name = cx.font_cache().family_name(font_family_id).unwrap();
3853 let font_properties = Default::default();
3854 let font_id = font_cache
3855 .select_font(font_family_id, &font_properties)
3856 .unwrap();
3857 let font_size = settings.buffer_font_size;
3858
3859 let mut theme = settings.theme.editor.clone();
3860 theme.text = TextStyle {
3861 color: theme.text.color,
3862 font_family_name,
3863 font_family_id,
3864 font_id,
3865 font_size,
3866 font_properties,
3867 underline: None,
3868 };
3869 let language = buffer.upgrade(cx).and_then(|buf| buf.read(cx).language(cx));
3870 let soft_wrap = match settings.soft_wrap(language) {
3871 workspace::settings::SoftWrap::None => SoftWrap::None,
3872 workspace::settings::SoftWrap::EditorWidth => SoftWrap::EditorWidth,
3873 workspace::settings::SoftWrap::PreferredLineLength => {
3874 SoftWrap::Column(settings.preferred_line_length(language).saturating_sub(1))
3875 }
3876 };
3877
3878 EditorSettings {
3879 tab_size: settings.tab_size,
3880 soft_wrap,
3881 style: theme,
3882 }
3883 })
3884}
3885
3886#[cfg(test)]
3887mod tests {
3888 use super::*;
3889 use language::LanguageConfig;
3890 use std::time::Instant;
3891 use text::Point;
3892 use unindent::Unindent;
3893 use util::test::sample_text;
3894
3895 #[gpui::test]
3896 fn test_undo_redo_with_selection_restoration(cx: &mut MutableAppContext) {
3897 let mut now = Instant::now();
3898 let buffer = cx.add_model(|cx| language::Buffer::new(0, "123456", cx));
3899 let group_interval = buffer.read(cx).transaction_group_interval();
3900 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
3901 let settings = EditorSettings::test(cx);
3902 let (_, editor) = cx.add_window(Default::default(), |cx| {
3903 build_editor(buffer.clone(), settings, cx)
3904 });
3905
3906 editor.update(cx, |editor, cx| {
3907 editor.start_transaction_at(now, cx);
3908 editor.select_ranges([2..4], None, cx);
3909 editor.insert("cd", cx);
3910 editor.end_transaction_at(now, cx);
3911 assert_eq!(editor.text(cx), "12cd56");
3912 assert_eq!(editor.selected_ranges(cx), vec![4..4]);
3913
3914 editor.start_transaction_at(now, cx);
3915 editor.select_ranges([4..5], None, cx);
3916 editor.insert("e", cx);
3917 editor.end_transaction_at(now, cx);
3918 assert_eq!(editor.text(cx), "12cde6");
3919 assert_eq!(editor.selected_ranges(cx), vec![5..5]);
3920
3921 now += group_interval + Duration::from_millis(1);
3922 editor.select_ranges([2..2], None, cx);
3923
3924 // Simulate an edit in another editor
3925 buffer.update(cx, |buffer, cx| {
3926 buffer.start_transaction_at(now, cx);
3927 buffer.edit([0..1], "a", cx);
3928 buffer.edit([1..1], "b", cx);
3929 buffer.end_transaction_at(now, cx);
3930 });
3931
3932 assert_eq!(editor.text(cx), "ab2cde6");
3933 assert_eq!(editor.selected_ranges(cx), vec![3..3]);
3934
3935 // Last transaction happened past the group interval in a different editor.
3936 // Undo it individually and don't restore selections.
3937 editor.undo(&Undo, cx);
3938 assert_eq!(editor.text(cx), "12cde6");
3939 assert_eq!(editor.selected_ranges(cx), vec![2..2]);
3940
3941 // First two transactions happened within the group interval in this editor.
3942 // Undo them together and restore selections.
3943 editor.undo(&Undo, cx);
3944 editor.undo(&Undo, cx); // Undo stack is empty here, so this is a no-op.
3945 assert_eq!(editor.text(cx), "123456");
3946 assert_eq!(editor.selected_ranges(cx), vec![0..0]);
3947
3948 // Redo the first two transactions together.
3949 editor.redo(&Redo, cx);
3950 assert_eq!(editor.text(cx), "12cde6");
3951 assert_eq!(editor.selected_ranges(cx), vec![5..5]);
3952
3953 // Redo the last transaction on its own.
3954 editor.redo(&Redo, cx);
3955 assert_eq!(editor.text(cx), "ab2cde6");
3956 assert_eq!(editor.selected_ranges(cx), vec![6..6]);
3957
3958 // Test empty transactions.
3959 editor.start_transaction_at(now, cx);
3960 editor.end_transaction_at(now, cx);
3961 editor.undo(&Undo, cx);
3962 assert_eq!(editor.text(cx), "12cde6");
3963 });
3964 }
3965
3966 #[gpui::test]
3967 fn test_selection_with_mouse(cx: &mut gpui::MutableAppContext) {
3968 let buffer = MultiBuffer::build_simple("aaaaaa\nbbbbbb\ncccccc\ndddddd\n", cx);
3969 let settings = EditorSettings::test(cx);
3970 let (_, editor) =
3971 cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
3972
3973 editor.update(cx, |view, cx| {
3974 view.begin_selection(DisplayPoint::new(2, 2), false, 1, cx);
3975 });
3976
3977 assert_eq!(
3978 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
3979 [DisplayPoint::new(2, 2)..DisplayPoint::new(2, 2)]
3980 );
3981
3982 editor.update(cx, |view, cx| {
3983 view.update_selection(DisplayPoint::new(3, 3), 0, Vector2F::zero(), cx);
3984 });
3985
3986 assert_eq!(
3987 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
3988 [DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3)]
3989 );
3990
3991 editor.update(cx, |view, cx| {
3992 view.update_selection(DisplayPoint::new(1, 1), 0, Vector2F::zero(), cx);
3993 });
3994
3995 assert_eq!(
3996 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
3997 [DisplayPoint::new(2, 2)..DisplayPoint::new(1, 1)]
3998 );
3999
4000 editor.update(cx, |view, cx| {
4001 view.end_selection(cx);
4002 view.update_selection(DisplayPoint::new(3, 3), 0, Vector2F::zero(), cx);
4003 });
4004
4005 assert_eq!(
4006 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
4007 [DisplayPoint::new(2, 2)..DisplayPoint::new(1, 1)]
4008 );
4009
4010 editor.update(cx, |view, cx| {
4011 view.begin_selection(DisplayPoint::new(3, 3), true, 1, cx);
4012 view.update_selection(DisplayPoint::new(0, 0), 0, Vector2F::zero(), cx);
4013 });
4014
4015 assert_eq!(
4016 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
4017 [
4018 DisplayPoint::new(2, 2)..DisplayPoint::new(1, 1),
4019 DisplayPoint::new(3, 3)..DisplayPoint::new(0, 0)
4020 ]
4021 );
4022
4023 editor.update(cx, |view, cx| {
4024 view.end_selection(cx);
4025 });
4026
4027 assert_eq!(
4028 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
4029 [DisplayPoint::new(3, 3)..DisplayPoint::new(0, 0)]
4030 );
4031 }
4032
4033 #[gpui::test]
4034 fn test_canceling_pending_selection(cx: &mut gpui::MutableAppContext) {
4035 let buffer = MultiBuffer::build_simple("aaaaaa\nbbbbbb\ncccccc\ndddddd\n", cx);
4036 let settings = EditorSettings::test(cx);
4037 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
4038
4039 view.update(cx, |view, cx| {
4040 view.begin_selection(DisplayPoint::new(2, 2), false, 1, cx);
4041 assert_eq!(
4042 view.selected_display_ranges(cx),
4043 [DisplayPoint::new(2, 2)..DisplayPoint::new(2, 2)]
4044 );
4045 });
4046
4047 view.update(cx, |view, cx| {
4048 view.update_selection(DisplayPoint::new(3, 3), 0, Vector2F::zero(), cx);
4049 assert_eq!(
4050 view.selected_display_ranges(cx),
4051 [DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3)]
4052 );
4053 });
4054
4055 view.update(cx, |view, cx| {
4056 view.cancel(&Cancel, cx);
4057 view.update_selection(DisplayPoint::new(1, 1), 0, Vector2F::zero(), cx);
4058 assert_eq!(
4059 view.selected_display_ranges(cx),
4060 [DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3)]
4061 );
4062 });
4063 }
4064
4065 #[gpui::test]
4066 fn test_cancel(cx: &mut gpui::MutableAppContext) {
4067 let buffer = MultiBuffer::build_simple("aaaaaa\nbbbbbb\ncccccc\ndddddd\n", cx);
4068 let settings = EditorSettings::test(cx);
4069 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
4070
4071 view.update(cx, |view, cx| {
4072 view.begin_selection(DisplayPoint::new(3, 4), false, 1, cx);
4073 view.update_selection(DisplayPoint::new(1, 1), 0, Vector2F::zero(), cx);
4074 view.end_selection(cx);
4075
4076 view.begin_selection(DisplayPoint::new(0, 1), true, 1, cx);
4077 view.update_selection(DisplayPoint::new(0, 3), 0, Vector2F::zero(), cx);
4078 view.end_selection(cx);
4079 assert_eq!(
4080 view.selected_display_ranges(cx),
4081 [
4082 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
4083 DisplayPoint::new(3, 4)..DisplayPoint::new(1, 1),
4084 ]
4085 );
4086 });
4087
4088 view.update(cx, |view, cx| {
4089 view.cancel(&Cancel, cx);
4090 assert_eq!(
4091 view.selected_display_ranges(cx),
4092 [DisplayPoint::new(3, 4)..DisplayPoint::new(1, 1)]
4093 );
4094 });
4095
4096 view.update(cx, |view, cx| {
4097 view.cancel(&Cancel, cx);
4098 assert_eq!(
4099 view.selected_display_ranges(cx),
4100 [DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1)]
4101 );
4102 });
4103 }
4104
4105 #[gpui::test]
4106 fn test_fold(cx: &mut gpui::MutableAppContext) {
4107 let buffer = MultiBuffer::build_simple(
4108 &"
4109 impl Foo {
4110 // Hello!
4111
4112 fn a() {
4113 1
4114 }
4115
4116 fn b() {
4117 2
4118 }
4119
4120 fn c() {
4121 3
4122 }
4123 }
4124 "
4125 .unindent(),
4126 cx,
4127 );
4128 let settings = EditorSettings::test(&cx);
4129 let (_, view) = cx.add_window(Default::default(), |cx| {
4130 build_editor(buffer.clone(), settings, cx)
4131 });
4132
4133 view.update(cx, |view, cx| {
4134 view.select_display_ranges(&[DisplayPoint::new(8, 0)..DisplayPoint::new(12, 0)], cx)
4135 .unwrap();
4136 view.fold(&Fold, cx);
4137 assert_eq!(
4138 view.display_text(cx),
4139 "
4140 impl Foo {
4141 // Hello!
4142
4143 fn a() {
4144 1
4145 }
4146
4147 fn b() {…
4148 }
4149
4150 fn c() {…
4151 }
4152 }
4153 "
4154 .unindent(),
4155 );
4156
4157 view.fold(&Fold, cx);
4158 assert_eq!(
4159 view.display_text(cx),
4160 "
4161 impl Foo {…
4162 }
4163 "
4164 .unindent(),
4165 );
4166
4167 view.unfold(&Unfold, cx);
4168 assert_eq!(
4169 view.display_text(cx),
4170 "
4171 impl Foo {
4172 // Hello!
4173
4174 fn a() {
4175 1
4176 }
4177
4178 fn b() {…
4179 }
4180
4181 fn c() {…
4182 }
4183 }
4184 "
4185 .unindent(),
4186 );
4187
4188 view.unfold(&Unfold, cx);
4189 assert_eq!(view.display_text(cx), buffer.read(cx).read(cx).text());
4190 });
4191 }
4192
4193 #[gpui::test]
4194 fn test_move_cursor(cx: &mut gpui::MutableAppContext) {
4195 let buffer = MultiBuffer::build_simple(&sample_text(6, 6, 'a'), cx);
4196 let settings = EditorSettings::test(&cx);
4197 let (_, view) = cx.add_window(Default::default(), |cx| {
4198 build_editor(buffer.clone(), settings, cx)
4199 });
4200
4201 buffer.update(cx, |buffer, cx| {
4202 buffer.edit(
4203 vec![
4204 Point::new(1, 0)..Point::new(1, 0),
4205 Point::new(1, 1)..Point::new(1, 1),
4206 ],
4207 "\t",
4208 cx,
4209 );
4210 });
4211
4212 view.update(cx, |view, cx| {
4213 assert_eq!(
4214 view.selected_display_ranges(cx),
4215 &[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)]
4216 );
4217
4218 view.move_down(&MoveDown, cx);
4219 assert_eq!(
4220 view.selected_display_ranges(cx),
4221 &[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)]
4222 );
4223
4224 view.move_right(&MoveRight, cx);
4225 assert_eq!(
4226 view.selected_display_ranges(cx),
4227 &[DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4)]
4228 );
4229
4230 view.move_left(&MoveLeft, cx);
4231 assert_eq!(
4232 view.selected_display_ranges(cx),
4233 &[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)]
4234 );
4235
4236 view.move_up(&MoveUp, cx);
4237 assert_eq!(
4238 view.selected_display_ranges(cx),
4239 &[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)]
4240 );
4241
4242 view.move_to_end(&MoveToEnd, cx);
4243 assert_eq!(
4244 view.selected_display_ranges(cx),
4245 &[DisplayPoint::new(5, 6)..DisplayPoint::new(5, 6)]
4246 );
4247
4248 view.move_to_beginning(&MoveToBeginning, cx);
4249 assert_eq!(
4250 view.selected_display_ranges(cx),
4251 &[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)]
4252 );
4253
4254 view.select_display_ranges(&[DisplayPoint::new(0, 1)..DisplayPoint::new(0, 2)], cx)
4255 .unwrap();
4256 view.select_to_beginning(&SelectToBeginning, cx);
4257 assert_eq!(
4258 view.selected_display_ranges(cx),
4259 &[DisplayPoint::new(0, 1)..DisplayPoint::new(0, 0)]
4260 );
4261
4262 view.select_to_end(&SelectToEnd, cx);
4263 assert_eq!(
4264 view.selected_display_ranges(cx),
4265 &[DisplayPoint::new(0, 1)..DisplayPoint::new(5, 6)]
4266 );
4267 });
4268 }
4269
4270 #[gpui::test]
4271 fn test_move_cursor_multibyte(cx: &mut gpui::MutableAppContext) {
4272 let buffer = MultiBuffer::build_simple("ⓐⓑⓒⓓⓔ\nabcde\nαβγδε\n", cx);
4273 let settings = EditorSettings::test(&cx);
4274 let (_, view) = cx.add_window(Default::default(), |cx| {
4275 build_editor(buffer.clone(), settings, cx)
4276 });
4277
4278 assert_eq!('ⓐ'.len_utf8(), 3);
4279 assert_eq!('α'.len_utf8(), 2);
4280
4281 view.update(cx, |view, cx| {
4282 view.fold_ranges(
4283 vec![
4284 Point::new(0, 6)..Point::new(0, 12),
4285 Point::new(1, 2)..Point::new(1, 4),
4286 Point::new(2, 4)..Point::new(2, 8),
4287 ],
4288 cx,
4289 );
4290 assert_eq!(view.display_text(cx), "ⓐⓑ…ⓔ\nab…e\nαβ…ε\n");
4291
4292 view.move_right(&MoveRight, cx);
4293 assert_eq!(
4294 view.selected_display_ranges(cx),
4295 &[empty_range(0, "ⓐ".len())]
4296 );
4297 view.move_right(&MoveRight, cx);
4298 assert_eq!(
4299 view.selected_display_ranges(cx),
4300 &[empty_range(0, "ⓐⓑ".len())]
4301 );
4302 view.move_right(&MoveRight, cx);
4303 assert_eq!(
4304 view.selected_display_ranges(cx),
4305 &[empty_range(0, "ⓐⓑ…".len())]
4306 );
4307
4308 view.move_down(&MoveDown, cx);
4309 assert_eq!(
4310 view.selected_display_ranges(cx),
4311 &[empty_range(1, "ab…".len())]
4312 );
4313 view.move_left(&MoveLeft, cx);
4314 assert_eq!(
4315 view.selected_display_ranges(cx),
4316 &[empty_range(1, "ab".len())]
4317 );
4318 view.move_left(&MoveLeft, cx);
4319 assert_eq!(
4320 view.selected_display_ranges(cx),
4321 &[empty_range(1, "a".len())]
4322 );
4323
4324 view.move_down(&MoveDown, cx);
4325 assert_eq!(
4326 view.selected_display_ranges(cx),
4327 &[empty_range(2, "α".len())]
4328 );
4329 view.move_right(&MoveRight, cx);
4330 assert_eq!(
4331 view.selected_display_ranges(cx),
4332 &[empty_range(2, "αβ".len())]
4333 );
4334 view.move_right(&MoveRight, cx);
4335 assert_eq!(
4336 view.selected_display_ranges(cx),
4337 &[empty_range(2, "αβ…".len())]
4338 );
4339 view.move_right(&MoveRight, cx);
4340 assert_eq!(
4341 view.selected_display_ranges(cx),
4342 &[empty_range(2, "αβ…ε".len())]
4343 );
4344
4345 view.move_up(&MoveUp, cx);
4346 assert_eq!(
4347 view.selected_display_ranges(cx),
4348 &[empty_range(1, "ab…e".len())]
4349 );
4350 view.move_up(&MoveUp, cx);
4351 assert_eq!(
4352 view.selected_display_ranges(cx),
4353 &[empty_range(0, "ⓐⓑ…ⓔ".len())]
4354 );
4355 view.move_left(&MoveLeft, cx);
4356 assert_eq!(
4357 view.selected_display_ranges(cx),
4358 &[empty_range(0, "ⓐⓑ…".len())]
4359 );
4360 view.move_left(&MoveLeft, cx);
4361 assert_eq!(
4362 view.selected_display_ranges(cx),
4363 &[empty_range(0, "ⓐⓑ".len())]
4364 );
4365 view.move_left(&MoveLeft, cx);
4366 assert_eq!(
4367 view.selected_display_ranges(cx),
4368 &[empty_range(0, "ⓐ".len())]
4369 );
4370 });
4371 }
4372
4373 #[gpui::test]
4374 fn test_move_cursor_different_line_lengths(cx: &mut gpui::MutableAppContext) {
4375 let buffer = MultiBuffer::build_simple("ⓐⓑⓒⓓⓔ\nabcd\nαβγ\nabcd\nⓐⓑⓒⓓⓔ\n", cx);
4376 let settings = EditorSettings::test(&cx);
4377 let (_, view) = cx.add_window(Default::default(), |cx| {
4378 build_editor(buffer.clone(), settings, cx)
4379 });
4380 view.update(cx, |view, cx| {
4381 view.select_display_ranges(&[empty_range(0, "ⓐⓑⓒⓓⓔ".len())], cx)
4382 .unwrap();
4383
4384 view.move_down(&MoveDown, cx);
4385 assert_eq!(
4386 view.selected_display_ranges(cx),
4387 &[empty_range(1, "abcd".len())]
4388 );
4389
4390 view.move_down(&MoveDown, cx);
4391 assert_eq!(
4392 view.selected_display_ranges(cx),
4393 &[empty_range(2, "αβγ".len())]
4394 );
4395
4396 view.move_down(&MoveDown, cx);
4397 assert_eq!(
4398 view.selected_display_ranges(cx),
4399 &[empty_range(3, "abcd".len())]
4400 );
4401
4402 view.move_down(&MoveDown, cx);
4403 assert_eq!(
4404 view.selected_display_ranges(cx),
4405 &[empty_range(4, "ⓐⓑⓒⓓⓔ".len())]
4406 );
4407
4408 view.move_up(&MoveUp, cx);
4409 assert_eq!(
4410 view.selected_display_ranges(cx),
4411 &[empty_range(3, "abcd".len())]
4412 );
4413
4414 view.move_up(&MoveUp, cx);
4415 assert_eq!(
4416 view.selected_display_ranges(cx),
4417 &[empty_range(2, "αβγ".len())]
4418 );
4419 });
4420 }
4421
4422 #[gpui::test]
4423 fn test_beginning_end_of_line(cx: &mut gpui::MutableAppContext) {
4424 let buffer = MultiBuffer::build_simple("abc\n def", cx);
4425 let settings = EditorSettings::test(&cx);
4426 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
4427 view.update(cx, |view, cx| {
4428 view.select_display_ranges(
4429 &[
4430 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
4431 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4),
4432 ],
4433 cx,
4434 )
4435 .unwrap();
4436 });
4437
4438 view.update(cx, |view, cx| {
4439 view.move_to_beginning_of_line(&MoveToBeginningOfLine, cx);
4440 assert_eq!(
4441 view.selected_display_ranges(cx),
4442 &[
4443 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
4444 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
4445 ]
4446 );
4447 });
4448
4449 view.update(cx, |view, cx| {
4450 view.move_to_beginning_of_line(&MoveToBeginningOfLine, cx);
4451 assert_eq!(
4452 view.selected_display_ranges(cx),
4453 &[
4454 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
4455 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
4456 ]
4457 );
4458 });
4459
4460 view.update(cx, |view, cx| {
4461 view.move_to_beginning_of_line(&MoveToBeginningOfLine, cx);
4462 assert_eq!(
4463 view.selected_display_ranges(cx),
4464 &[
4465 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
4466 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
4467 ]
4468 );
4469 });
4470
4471 view.update(cx, |view, cx| {
4472 view.move_to_end_of_line(&MoveToEndOfLine, cx);
4473 assert_eq!(
4474 view.selected_display_ranges(cx),
4475 &[
4476 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
4477 DisplayPoint::new(1, 5)..DisplayPoint::new(1, 5),
4478 ]
4479 );
4480 });
4481
4482 // Moving to the end of line again is a no-op.
4483 view.update(cx, |view, cx| {
4484 view.move_to_end_of_line(&MoveToEndOfLine, cx);
4485 assert_eq!(
4486 view.selected_display_ranges(cx),
4487 &[
4488 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
4489 DisplayPoint::new(1, 5)..DisplayPoint::new(1, 5),
4490 ]
4491 );
4492 });
4493
4494 view.update(cx, |view, cx| {
4495 view.move_left(&MoveLeft, cx);
4496 view.select_to_beginning_of_line(&SelectToBeginningOfLine(true), cx);
4497 assert_eq!(
4498 view.selected_display_ranges(cx),
4499 &[
4500 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 0),
4501 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 2),
4502 ]
4503 );
4504 });
4505
4506 view.update(cx, |view, cx| {
4507 view.select_to_beginning_of_line(&SelectToBeginningOfLine(true), cx);
4508 assert_eq!(
4509 view.selected_display_ranges(cx),
4510 &[
4511 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 0),
4512 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 0),
4513 ]
4514 );
4515 });
4516
4517 view.update(cx, |view, cx| {
4518 view.select_to_beginning_of_line(&SelectToBeginningOfLine(true), cx);
4519 assert_eq!(
4520 view.selected_display_ranges(cx),
4521 &[
4522 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 0),
4523 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 2),
4524 ]
4525 );
4526 });
4527
4528 view.update(cx, |view, cx| {
4529 view.select_to_end_of_line(&SelectToEndOfLine, cx);
4530 assert_eq!(
4531 view.selected_display_ranges(cx),
4532 &[
4533 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 3),
4534 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 5),
4535 ]
4536 );
4537 });
4538
4539 view.update(cx, |view, cx| {
4540 view.delete_to_end_of_line(&DeleteToEndOfLine, cx);
4541 assert_eq!(view.display_text(cx), "ab\n de");
4542 assert_eq!(
4543 view.selected_display_ranges(cx),
4544 &[
4545 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
4546 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4),
4547 ]
4548 );
4549 });
4550
4551 view.update(cx, |view, cx| {
4552 view.delete_to_beginning_of_line(&DeleteToBeginningOfLine, cx);
4553 assert_eq!(view.display_text(cx), "\n");
4554 assert_eq!(
4555 view.selected_display_ranges(cx),
4556 &[
4557 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
4558 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
4559 ]
4560 );
4561 });
4562 }
4563
4564 #[gpui::test]
4565 fn test_prev_next_word_boundary(cx: &mut gpui::MutableAppContext) {
4566 let buffer = MultiBuffer::build_simple("use std::str::{foo, bar}\n\n {baz.qux()}", cx);
4567 let settings = EditorSettings::test(&cx);
4568 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
4569 view.update(cx, |view, cx| {
4570 view.select_display_ranges(
4571 &[
4572 DisplayPoint::new(0, 11)..DisplayPoint::new(0, 11),
4573 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 4),
4574 ],
4575 cx,
4576 )
4577 .unwrap();
4578 });
4579
4580 view.update(cx, |view, cx| {
4581 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
4582 assert_eq!(
4583 view.selected_display_ranges(cx),
4584 &[
4585 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 9),
4586 DisplayPoint::new(2, 3)..DisplayPoint::new(2, 3),
4587 ]
4588 );
4589 });
4590
4591 view.update(cx, |view, cx| {
4592 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
4593 assert_eq!(
4594 view.selected_display_ranges(cx),
4595 &[
4596 DisplayPoint::new(0, 7)..DisplayPoint::new(0, 7),
4597 DisplayPoint::new(2, 2)..DisplayPoint::new(2, 2),
4598 ]
4599 );
4600 });
4601
4602 view.update(cx, |view, cx| {
4603 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
4604 assert_eq!(
4605 view.selected_display_ranges(cx),
4606 &[
4607 DisplayPoint::new(0, 4)..DisplayPoint::new(0, 4),
4608 DisplayPoint::new(2, 0)..DisplayPoint::new(2, 0),
4609 ]
4610 );
4611 });
4612
4613 view.update(cx, |view, cx| {
4614 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
4615 assert_eq!(
4616 view.selected_display_ranges(cx),
4617 &[
4618 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
4619 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
4620 ]
4621 );
4622 });
4623
4624 view.update(cx, |view, cx| {
4625 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
4626 assert_eq!(
4627 view.selected_display_ranges(cx),
4628 &[
4629 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
4630 DisplayPoint::new(0, 23)..DisplayPoint::new(0, 23),
4631 ]
4632 );
4633 });
4634
4635 view.update(cx, |view, cx| {
4636 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
4637 assert_eq!(
4638 view.selected_display_ranges(cx),
4639 &[
4640 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
4641 DisplayPoint::new(0, 24)..DisplayPoint::new(0, 24),
4642 ]
4643 );
4644 });
4645
4646 view.update(cx, |view, cx| {
4647 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
4648 assert_eq!(
4649 view.selected_display_ranges(cx),
4650 &[
4651 DisplayPoint::new(0, 7)..DisplayPoint::new(0, 7),
4652 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
4653 ]
4654 );
4655 });
4656
4657 view.update(cx, |view, cx| {
4658 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
4659 assert_eq!(
4660 view.selected_display_ranges(cx),
4661 &[
4662 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 9),
4663 DisplayPoint::new(2, 3)..DisplayPoint::new(2, 3),
4664 ]
4665 );
4666 });
4667
4668 view.update(cx, |view, cx| {
4669 view.move_right(&MoveRight, cx);
4670 view.select_to_previous_word_boundary(&SelectToPreviousWordBoundary, cx);
4671 assert_eq!(
4672 view.selected_display_ranges(cx),
4673 &[
4674 DisplayPoint::new(0, 10)..DisplayPoint::new(0, 9),
4675 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 3),
4676 ]
4677 );
4678 });
4679
4680 view.update(cx, |view, cx| {
4681 view.select_to_previous_word_boundary(&SelectToPreviousWordBoundary, cx);
4682 assert_eq!(
4683 view.selected_display_ranges(cx),
4684 &[
4685 DisplayPoint::new(0, 10)..DisplayPoint::new(0, 7),
4686 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 2),
4687 ]
4688 );
4689 });
4690
4691 view.update(cx, |view, cx| {
4692 view.select_to_next_word_boundary(&SelectToNextWordBoundary, cx);
4693 assert_eq!(
4694 view.selected_display_ranges(cx),
4695 &[
4696 DisplayPoint::new(0, 10)..DisplayPoint::new(0, 9),
4697 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 3),
4698 ]
4699 );
4700 });
4701 }
4702
4703 #[gpui::test]
4704 fn test_prev_next_word_bounds_with_soft_wrap(cx: &mut gpui::MutableAppContext) {
4705 let buffer = MultiBuffer::build_simple("use one::{\n two::three::four::five\n};", cx);
4706 let settings = EditorSettings::test(&cx);
4707 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
4708
4709 view.update(cx, |view, cx| {
4710 view.set_wrap_width(Some(140.), cx);
4711 assert_eq!(
4712 view.display_text(cx),
4713 "use one::{\n two::three::\n four::five\n};"
4714 );
4715
4716 view.select_display_ranges(&[DisplayPoint::new(1, 7)..DisplayPoint::new(1, 7)], cx)
4717 .unwrap();
4718
4719 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
4720 assert_eq!(
4721 view.selected_display_ranges(cx),
4722 &[DisplayPoint::new(1, 9)..DisplayPoint::new(1, 9)]
4723 );
4724
4725 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
4726 assert_eq!(
4727 view.selected_display_ranges(cx),
4728 &[DisplayPoint::new(1, 14)..DisplayPoint::new(1, 14)]
4729 );
4730
4731 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
4732 assert_eq!(
4733 view.selected_display_ranges(cx),
4734 &[DisplayPoint::new(2, 4)..DisplayPoint::new(2, 4)]
4735 );
4736
4737 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
4738 assert_eq!(
4739 view.selected_display_ranges(cx),
4740 &[DisplayPoint::new(2, 8)..DisplayPoint::new(2, 8)]
4741 );
4742
4743 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
4744 assert_eq!(
4745 view.selected_display_ranges(cx),
4746 &[DisplayPoint::new(2, 4)..DisplayPoint::new(2, 4)]
4747 );
4748
4749 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
4750 assert_eq!(
4751 view.selected_display_ranges(cx),
4752 &[DisplayPoint::new(1, 14)..DisplayPoint::new(1, 14)]
4753 );
4754 });
4755 }
4756
4757 #[gpui::test]
4758 fn test_delete_to_word_boundary(cx: &mut gpui::MutableAppContext) {
4759 let buffer = MultiBuffer::build_simple("one two three four", cx);
4760 let settings = EditorSettings::test(&cx);
4761 let (_, view) = cx.add_window(Default::default(), |cx| {
4762 build_editor(buffer.clone(), settings, cx)
4763 });
4764
4765 view.update(cx, |view, cx| {
4766 view.select_display_ranges(
4767 &[
4768 // an empty selection - the preceding word fragment is deleted
4769 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
4770 // characters selected - they are deleted
4771 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 12),
4772 ],
4773 cx,
4774 )
4775 .unwrap();
4776 view.delete_to_previous_word_boundary(&DeleteToPreviousWordBoundary, cx);
4777 });
4778
4779 assert_eq!(buffer.read(cx).read(cx).text(), "e two te four");
4780
4781 view.update(cx, |view, cx| {
4782 view.select_display_ranges(
4783 &[
4784 // an empty selection - the following word fragment is deleted
4785 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
4786 // characters selected - they are deleted
4787 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 10),
4788 ],
4789 cx,
4790 )
4791 .unwrap();
4792 view.delete_to_next_word_boundary(&DeleteToNextWordBoundary, cx);
4793 });
4794
4795 assert_eq!(buffer.read(cx).read(cx).text(), "e t te our");
4796 }
4797
4798 #[gpui::test]
4799 fn test_newline(cx: &mut gpui::MutableAppContext) {
4800 let buffer = MultiBuffer::build_simple("aaaa\n bbbb\n", cx);
4801 let settings = EditorSettings::test(&cx);
4802 let (_, view) = cx.add_window(Default::default(), |cx| {
4803 build_editor(buffer.clone(), settings, cx)
4804 });
4805
4806 view.update(cx, |view, cx| {
4807 view.select_display_ranges(
4808 &[
4809 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
4810 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
4811 DisplayPoint::new(1, 6)..DisplayPoint::new(1, 6),
4812 ],
4813 cx,
4814 )
4815 .unwrap();
4816
4817 view.newline(&Newline, cx);
4818 assert_eq!(view.text(cx), "aa\naa\n \n bb\n bb\n");
4819 });
4820 }
4821
4822 #[gpui::test]
4823 fn test_indent_outdent(cx: &mut gpui::MutableAppContext) {
4824 let buffer = MultiBuffer::build_simple(" one two\nthree\n four", cx);
4825 let settings = EditorSettings::test(&cx);
4826 let (_, view) = cx.add_window(Default::default(), |cx| {
4827 build_editor(buffer.clone(), settings, cx)
4828 });
4829
4830 view.update(cx, |view, cx| {
4831 // two selections on the same line
4832 view.select_display_ranges(
4833 &[
4834 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 5),
4835 DisplayPoint::new(0, 6)..DisplayPoint::new(0, 9),
4836 ],
4837 cx,
4838 )
4839 .unwrap();
4840
4841 // indent from mid-tabstop to full tabstop
4842 view.tab(&Tab, cx);
4843 assert_eq!(view.text(cx), " one two\nthree\n four");
4844 assert_eq!(
4845 view.selected_display_ranges(cx),
4846 &[
4847 DisplayPoint::new(0, 4)..DisplayPoint::new(0, 7),
4848 DisplayPoint::new(0, 8)..DisplayPoint::new(0, 11),
4849 ]
4850 );
4851
4852 // outdent from 1 tabstop to 0 tabstops
4853 view.outdent(&Outdent, cx);
4854 assert_eq!(view.text(cx), "one two\nthree\n four");
4855 assert_eq!(
4856 view.selected_display_ranges(cx),
4857 &[
4858 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 3),
4859 DisplayPoint::new(0, 4)..DisplayPoint::new(0, 7),
4860 ]
4861 );
4862
4863 // select across line ending
4864 view.select_display_ranges(&[DisplayPoint::new(1, 1)..DisplayPoint::new(2, 0)], cx)
4865 .unwrap();
4866
4867 // indent and outdent affect only the preceding line
4868 view.tab(&Tab, cx);
4869 assert_eq!(view.text(cx), "one two\n three\n four");
4870 assert_eq!(
4871 view.selected_display_ranges(cx),
4872 &[DisplayPoint::new(1, 5)..DisplayPoint::new(2, 0)]
4873 );
4874 view.outdent(&Outdent, cx);
4875 assert_eq!(view.text(cx), "one two\nthree\n four");
4876 assert_eq!(
4877 view.selected_display_ranges(cx),
4878 &[DisplayPoint::new(1, 1)..DisplayPoint::new(2, 0)]
4879 );
4880 });
4881 }
4882
4883 #[gpui::test]
4884 fn test_backspace(cx: &mut gpui::MutableAppContext) {
4885 let buffer =
4886 MultiBuffer::build_simple("one two three\nfour five six\nseven eight nine\nten\n", cx);
4887 let settings = EditorSettings::test(&cx);
4888 let (_, view) = cx.add_window(Default::default(), |cx| {
4889 build_editor(buffer.clone(), settings, cx)
4890 });
4891
4892 view.update(cx, |view, cx| {
4893 view.select_display_ranges(
4894 &[
4895 // an empty selection - the preceding character is deleted
4896 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
4897 // one character selected - it is deleted
4898 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
4899 // a line suffix selected - it is deleted
4900 DisplayPoint::new(2, 6)..DisplayPoint::new(3, 0),
4901 ],
4902 cx,
4903 )
4904 .unwrap();
4905 view.backspace(&Backspace, cx);
4906 });
4907
4908 assert_eq!(
4909 buffer.read(cx).read(cx).text(),
4910 "oe two three\nfou five six\nseven ten\n"
4911 );
4912 }
4913
4914 #[gpui::test]
4915 fn test_delete(cx: &mut gpui::MutableAppContext) {
4916 let buffer =
4917 MultiBuffer::build_simple("one two three\nfour five six\nseven eight nine\nten\n", cx);
4918 let settings = EditorSettings::test(&cx);
4919 let (_, view) = cx.add_window(Default::default(), |cx| {
4920 build_editor(buffer.clone(), settings, cx)
4921 });
4922
4923 view.update(cx, |view, cx| {
4924 view.select_display_ranges(
4925 &[
4926 // an empty selection - the following character is deleted
4927 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
4928 // one character selected - it is deleted
4929 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
4930 // a line suffix selected - it is deleted
4931 DisplayPoint::new(2, 6)..DisplayPoint::new(3, 0),
4932 ],
4933 cx,
4934 )
4935 .unwrap();
4936 view.delete(&Delete, cx);
4937 });
4938
4939 assert_eq!(
4940 buffer.read(cx).read(cx).text(),
4941 "on two three\nfou five six\nseven ten\n"
4942 );
4943 }
4944
4945 #[gpui::test]
4946 fn test_delete_line(cx: &mut gpui::MutableAppContext) {
4947 let settings = EditorSettings::test(&cx);
4948 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
4949 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
4950 view.update(cx, |view, cx| {
4951 view.select_display_ranges(
4952 &[
4953 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
4954 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 1),
4955 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
4956 ],
4957 cx,
4958 )
4959 .unwrap();
4960 view.delete_line(&DeleteLine, cx);
4961 assert_eq!(view.display_text(cx), "ghi");
4962 assert_eq!(
4963 view.selected_display_ranges(cx),
4964 vec![
4965 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
4966 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1)
4967 ]
4968 );
4969 });
4970
4971 let settings = EditorSettings::test(&cx);
4972 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
4973 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
4974 view.update(cx, |view, cx| {
4975 view.select_display_ranges(&[DisplayPoint::new(2, 0)..DisplayPoint::new(0, 1)], cx)
4976 .unwrap();
4977 view.delete_line(&DeleteLine, cx);
4978 assert_eq!(view.display_text(cx), "ghi\n");
4979 assert_eq!(
4980 view.selected_display_ranges(cx),
4981 vec![DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1)]
4982 );
4983 });
4984 }
4985
4986 #[gpui::test]
4987 fn test_duplicate_line(cx: &mut gpui::MutableAppContext) {
4988 let settings = EditorSettings::test(&cx);
4989 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
4990 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
4991 view.update(cx, |view, cx| {
4992 view.select_display_ranges(
4993 &[
4994 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
4995 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
4996 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
4997 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
4998 ],
4999 cx,
5000 )
5001 .unwrap();
5002 view.duplicate_line(&DuplicateLine, cx);
5003 assert_eq!(view.display_text(cx), "abc\nabc\ndef\ndef\nghi\n\n");
5004 assert_eq!(
5005 view.selected_display_ranges(cx),
5006 vec![
5007 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 1),
5008 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
5009 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
5010 DisplayPoint::new(6, 0)..DisplayPoint::new(6, 0),
5011 ]
5012 );
5013 });
5014
5015 let settings = EditorSettings::test(&cx);
5016 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
5017 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
5018 view.update(cx, |view, cx| {
5019 view.select_display_ranges(
5020 &[
5021 DisplayPoint::new(0, 1)..DisplayPoint::new(1, 1),
5022 DisplayPoint::new(1, 2)..DisplayPoint::new(2, 1),
5023 ],
5024 cx,
5025 )
5026 .unwrap();
5027 view.duplicate_line(&DuplicateLine, cx);
5028 assert_eq!(view.display_text(cx), "abc\ndef\nghi\nabc\ndef\nghi\n");
5029 assert_eq!(
5030 view.selected_display_ranges(cx),
5031 vec![
5032 DisplayPoint::new(3, 1)..DisplayPoint::new(4, 1),
5033 DisplayPoint::new(4, 2)..DisplayPoint::new(5, 1),
5034 ]
5035 );
5036 });
5037 }
5038
5039 #[gpui::test]
5040 fn test_move_line_up_down(cx: &mut gpui::MutableAppContext) {
5041 let settings = EditorSettings::test(&cx);
5042 let buffer = MultiBuffer::build_simple(&sample_text(10, 5, 'a'), cx);
5043 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
5044 view.update(cx, |view, cx| {
5045 view.fold_ranges(
5046 vec![
5047 Point::new(0, 2)..Point::new(1, 2),
5048 Point::new(2, 3)..Point::new(4, 1),
5049 Point::new(7, 0)..Point::new(8, 4),
5050 ],
5051 cx,
5052 );
5053 view.select_display_ranges(
5054 &[
5055 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
5056 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 1),
5057 DisplayPoint::new(3, 2)..DisplayPoint::new(4, 3),
5058 DisplayPoint::new(5, 0)..DisplayPoint::new(5, 2),
5059 ],
5060 cx,
5061 )
5062 .unwrap();
5063 assert_eq!(
5064 view.display_text(cx),
5065 "aa…bbb\nccc…eeee\nfffff\nggggg\n…i\njjjjj"
5066 );
5067
5068 view.move_line_up(&MoveLineUp, cx);
5069 assert_eq!(
5070 view.display_text(cx),
5071 "aa…bbb\nccc…eeee\nggggg\n…i\njjjjj\nfffff"
5072 );
5073 assert_eq!(
5074 view.selected_display_ranges(cx),
5075 vec![
5076 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
5077 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
5078 DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3),
5079 DisplayPoint::new(4, 0)..DisplayPoint::new(4, 2)
5080 ]
5081 );
5082 });
5083
5084 view.update(cx, |view, cx| {
5085 view.move_line_down(&MoveLineDown, cx);
5086 assert_eq!(
5087 view.display_text(cx),
5088 "ccc…eeee\naa…bbb\nfffff\nggggg\n…i\njjjjj"
5089 );
5090 assert_eq!(
5091 view.selected_display_ranges(cx),
5092 vec![
5093 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
5094 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 1),
5095 DisplayPoint::new(3, 2)..DisplayPoint::new(4, 3),
5096 DisplayPoint::new(5, 0)..DisplayPoint::new(5, 2)
5097 ]
5098 );
5099 });
5100
5101 view.update(cx, |view, cx| {
5102 view.move_line_down(&MoveLineDown, cx);
5103 assert_eq!(
5104 view.display_text(cx),
5105 "ccc…eeee\nfffff\naa…bbb\nggggg\n…i\njjjjj"
5106 );
5107 assert_eq!(
5108 view.selected_display_ranges(cx),
5109 vec![
5110 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
5111 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 1),
5112 DisplayPoint::new(3, 2)..DisplayPoint::new(4, 3),
5113 DisplayPoint::new(5, 0)..DisplayPoint::new(5, 2)
5114 ]
5115 );
5116 });
5117
5118 view.update(cx, |view, cx| {
5119 view.move_line_up(&MoveLineUp, cx);
5120 assert_eq!(
5121 view.display_text(cx),
5122 "ccc…eeee\naa…bbb\nggggg\n…i\njjjjj\nfffff"
5123 );
5124 assert_eq!(
5125 view.selected_display_ranges(cx),
5126 vec![
5127 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
5128 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
5129 DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3),
5130 DisplayPoint::new(4, 0)..DisplayPoint::new(4, 2)
5131 ]
5132 );
5133 });
5134 }
5135
5136 #[gpui::test]
5137 fn test_move_line_up_down_with_blocks(cx: &mut gpui::MutableAppContext) {
5138 let settings = EditorSettings::test(&cx);
5139 let buffer = MultiBuffer::build_simple(&sample_text(10, 5, 'a'), cx);
5140 let snapshot = buffer.read(cx).snapshot(cx);
5141 let (_, editor) =
5142 cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
5143 editor.update(cx, |editor, cx| {
5144 editor.insert_blocks(
5145 [BlockProperties {
5146 position: snapshot.anchor_after(Point::new(2, 0)),
5147 disposition: BlockDisposition::Below,
5148 height: 1,
5149 render: Arc::new(|_| Empty::new().boxed()),
5150 }],
5151 cx,
5152 );
5153 editor.select_ranges([Point::new(2, 0)..Point::new(2, 0)], None, cx);
5154 editor.move_line_down(&MoveLineDown, cx);
5155 });
5156 }
5157
5158 #[gpui::test]
5159 fn test_clipboard(cx: &mut gpui::MutableAppContext) {
5160 let buffer = MultiBuffer::build_simple("one✅ two three four five six ", cx);
5161 let settings = EditorSettings::test(&cx);
5162 let view = cx
5163 .add_window(Default::default(), |cx| {
5164 build_editor(buffer.clone(), settings, cx)
5165 })
5166 .1;
5167
5168 // Cut with three selections. Clipboard text is divided into three slices.
5169 view.update(cx, |view, cx| {
5170 view.select_ranges(vec![0..7, 11..17, 22..27], None, cx);
5171 view.cut(&Cut, cx);
5172 assert_eq!(view.display_text(cx), "two four six ");
5173 });
5174
5175 // Paste with three cursors. Each cursor pastes one slice of the clipboard text.
5176 view.update(cx, |view, cx| {
5177 view.select_ranges(vec![4..4, 9..9, 13..13], None, cx);
5178 view.paste(&Paste, cx);
5179 assert_eq!(view.display_text(cx), "two one✅ four three six five ");
5180 assert_eq!(
5181 view.selected_display_ranges(cx),
5182 &[
5183 DisplayPoint::new(0, 11)..DisplayPoint::new(0, 11),
5184 DisplayPoint::new(0, 22)..DisplayPoint::new(0, 22),
5185 DisplayPoint::new(0, 31)..DisplayPoint::new(0, 31)
5186 ]
5187 );
5188 });
5189
5190 // Paste again but with only two cursors. Since the number of cursors doesn't
5191 // match the number of slices in the clipboard, the entire clipboard text
5192 // is pasted at each cursor.
5193 view.update(cx, |view, cx| {
5194 view.select_ranges(vec![0..0, 31..31], None, cx);
5195 view.handle_input(&Input("( ".into()), cx);
5196 view.paste(&Paste, cx);
5197 view.handle_input(&Input(") ".into()), cx);
5198 assert_eq!(
5199 view.display_text(cx),
5200 "( one✅ three five ) two one✅ four three six five ( one✅ three five ) "
5201 );
5202 });
5203
5204 view.update(cx, |view, cx| {
5205 view.select_ranges(vec![0..0], None, cx);
5206 view.handle_input(&Input("123\n4567\n89\n".into()), cx);
5207 assert_eq!(
5208 view.display_text(cx),
5209 "123\n4567\n89\n( one✅ three five ) two one✅ four three six five ( one✅ three five ) "
5210 );
5211 });
5212
5213 // Cut with three selections, one of which is full-line.
5214 view.update(cx, |view, cx| {
5215 view.select_display_ranges(
5216 &[
5217 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 2),
5218 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
5219 DisplayPoint::new(2, 0)..DisplayPoint::new(2, 1),
5220 ],
5221 cx,
5222 )
5223 .unwrap();
5224 view.cut(&Cut, cx);
5225 assert_eq!(
5226 view.display_text(cx),
5227 "13\n9\n( one✅ three five ) two one✅ four three six five ( one✅ three five ) "
5228 );
5229 });
5230
5231 // Paste with three selections, noticing how the copied selection that was full-line
5232 // gets inserted before the second cursor.
5233 view.update(cx, |view, cx| {
5234 view.select_display_ranges(
5235 &[
5236 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
5237 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
5238 DisplayPoint::new(2, 2)..DisplayPoint::new(2, 3),
5239 ],
5240 cx,
5241 )
5242 .unwrap();
5243 view.paste(&Paste, cx);
5244 assert_eq!(
5245 view.display_text(cx),
5246 "123\n4567\n9\n( 8ne✅ three five ) two one✅ four three six five ( one✅ three five ) "
5247 );
5248 assert_eq!(
5249 view.selected_display_ranges(cx),
5250 &[
5251 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
5252 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
5253 DisplayPoint::new(3, 3)..DisplayPoint::new(3, 3),
5254 ]
5255 );
5256 });
5257
5258 // Copy with a single cursor only, which writes the whole line into the clipboard.
5259 view.update(cx, |view, cx| {
5260 view.select_display_ranges(&[DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1)], cx)
5261 .unwrap();
5262 view.copy(&Copy, cx);
5263 });
5264
5265 // Paste with three selections, noticing how the copied full-line selection is inserted
5266 // before the empty selections but replaces the selection that is non-empty.
5267 view.update(cx, |view, cx| {
5268 view.select_display_ranges(
5269 &[
5270 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
5271 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 2),
5272 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
5273 ],
5274 cx,
5275 )
5276 .unwrap();
5277 view.paste(&Paste, cx);
5278 assert_eq!(
5279 view.display_text(cx),
5280 "123\n123\n123\n67\n123\n9\n( 8ne✅ three five ) two one✅ four three six five ( one✅ three five ) "
5281 );
5282 assert_eq!(
5283 view.selected_display_ranges(cx),
5284 &[
5285 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
5286 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
5287 DisplayPoint::new(5, 1)..DisplayPoint::new(5, 1),
5288 ]
5289 );
5290 });
5291 }
5292
5293 #[gpui::test]
5294 fn test_select_all(cx: &mut gpui::MutableAppContext) {
5295 let buffer = MultiBuffer::build_simple("abc\nde\nfgh", cx);
5296 let settings = EditorSettings::test(&cx);
5297 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
5298 view.update(cx, |view, cx| {
5299 view.select_all(&SelectAll, cx);
5300 assert_eq!(
5301 view.selected_display_ranges(cx),
5302 &[DisplayPoint::new(0, 0)..DisplayPoint::new(2, 3)]
5303 );
5304 });
5305 }
5306
5307 #[gpui::test]
5308 fn test_select_line(cx: &mut gpui::MutableAppContext) {
5309 let settings = EditorSettings::test(&cx);
5310 let buffer = MultiBuffer::build_simple(&sample_text(6, 5, 'a'), cx);
5311 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
5312 view.update(cx, |view, cx| {
5313 view.select_display_ranges(
5314 &[
5315 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
5316 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
5317 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
5318 DisplayPoint::new(4, 2)..DisplayPoint::new(4, 2),
5319 ],
5320 cx,
5321 )
5322 .unwrap();
5323 view.select_line(&SelectLine, cx);
5324 assert_eq!(
5325 view.selected_display_ranges(cx),
5326 vec![
5327 DisplayPoint::new(0, 0)..DisplayPoint::new(2, 0),
5328 DisplayPoint::new(4, 0)..DisplayPoint::new(5, 0),
5329 ]
5330 );
5331 });
5332
5333 view.update(cx, |view, cx| {
5334 view.select_line(&SelectLine, cx);
5335 assert_eq!(
5336 view.selected_display_ranges(cx),
5337 vec![
5338 DisplayPoint::new(0, 0)..DisplayPoint::new(3, 0),
5339 DisplayPoint::new(4, 0)..DisplayPoint::new(5, 5),
5340 ]
5341 );
5342 });
5343
5344 view.update(cx, |view, cx| {
5345 view.select_line(&SelectLine, cx);
5346 assert_eq!(
5347 view.selected_display_ranges(cx),
5348 vec![DisplayPoint::new(0, 0)..DisplayPoint::new(5, 5)]
5349 );
5350 });
5351 }
5352
5353 #[gpui::test]
5354 fn test_split_selection_into_lines(cx: &mut gpui::MutableAppContext) {
5355 let settings = EditorSettings::test(&cx);
5356 let buffer = MultiBuffer::build_simple(&sample_text(9, 5, 'a'), cx);
5357 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
5358 view.update(cx, |view, cx| {
5359 view.fold_ranges(
5360 vec![
5361 Point::new(0, 2)..Point::new(1, 2),
5362 Point::new(2, 3)..Point::new(4, 1),
5363 Point::new(7, 0)..Point::new(8, 4),
5364 ],
5365 cx,
5366 );
5367 view.select_display_ranges(
5368 &[
5369 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
5370 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
5371 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
5372 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 4),
5373 ],
5374 cx,
5375 )
5376 .unwrap();
5377 assert_eq!(view.display_text(cx), "aa…bbb\nccc…eeee\nfffff\nggggg\n…i");
5378 });
5379
5380 view.update(cx, |view, cx| {
5381 view.split_selection_into_lines(&SplitSelectionIntoLines, cx);
5382 assert_eq!(
5383 view.display_text(cx),
5384 "aaaaa\nbbbbb\nccc…eeee\nfffff\nggggg\n…i"
5385 );
5386 assert_eq!(
5387 view.selected_display_ranges(cx),
5388 [
5389 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
5390 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
5391 DisplayPoint::new(2, 0)..DisplayPoint::new(2, 0),
5392 DisplayPoint::new(5, 4)..DisplayPoint::new(5, 4)
5393 ]
5394 );
5395 });
5396
5397 view.update(cx, |view, cx| {
5398 view.select_display_ranges(&[DisplayPoint::new(5, 0)..DisplayPoint::new(0, 1)], cx)
5399 .unwrap();
5400 view.split_selection_into_lines(&SplitSelectionIntoLines, cx);
5401 assert_eq!(
5402 view.display_text(cx),
5403 "aaaaa\nbbbbb\nccccc\nddddd\neeeee\nfffff\nggggg\nhhhhh\niiiii"
5404 );
5405 assert_eq!(
5406 view.selected_display_ranges(cx),
5407 [
5408 DisplayPoint::new(0, 5)..DisplayPoint::new(0, 5),
5409 DisplayPoint::new(1, 5)..DisplayPoint::new(1, 5),
5410 DisplayPoint::new(2, 5)..DisplayPoint::new(2, 5),
5411 DisplayPoint::new(3, 5)..DisplayPoint::new(3, 5),
5412 DisplayPoint::new(4, 5)..DisplayPoint::new(4, 5),
5413 DisplayPoint::new(5, 5)..DisplayPoint::new(5, 5),
5414 DisplayPoint::new(6, 5)..DisplayPoint::new(6, 5),
5415 DisplayPoint::new(7, 0)..DisplayPoint::new(7, 0)
5416 ]
5417 );
5418 });
5419 }
5420
5421 #[gpui::test]
5422 fn test_add_selection_above_below(cx: &mut gpui::MutableAppContext) {
5423 let settings = EditorSettings::test(&cx);
5424 let buffer = MultiBuffer::build_simple("abc\ndefghi\n\njk\nlmno\n", cx);
5425 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
5426
5427 view.update(cx, |view, cx| {
5428 view.select_display_ranges(&[DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)], cx)
5429 .unwrap();
5430 });
5431 view.update(cx, |view, cx| {
5432 view.add_selection_above(&AddSelectionAbove, cx);
5433 assert_eq!(
5434 view.selected_display_ranges(cx),
5435 vec![
5436 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
5437 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)
5438 ]
5439 );
5440 });
5441
5442 view.update(cx, |view, cx| {
5443 view.add_selection_above(&AddSelectionAbove, cx);
5444 assert_eq!(
5445 view.selected_display_ranges(cx),
5446 vec![
5447 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
5448 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)
5449 ]
5450 );
5451 });
5452
5453 view.update(cx, |view, cx| {
5454 view.add_selection_below(&AddSelectionBelow, cx);
5455 assert_eq!(
5456 view.selected_display_ranges(cx),
5457 vec![DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)]
5458 );
5459 });
5460
5461 view.update(cx, |view, cx| {
5462 view.add_selection_below(&AddSelectionBelow, cx);
5463 assert_eq!(
5464 view.selected_display_ranges(cx),
5465 vec![
5466 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3),
5467 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 3)
5468 ]
5469 );
5470 });
5471
5472 view.update(cx, |view, cx| {
5473 view.add_selection_below(&AddSelectionBelow, cx);
5474 assert_eq!(
5475 view.selected_display_ranges(cx),
5476 vec![
5477 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3),
5478 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 3)
5479 ]
5480 );
5481 });
5482
5483 view.update(cx, |view, cx| {
5484 view.select_display_ranges(&[DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3)], cx)
5485 .unwrap();
5486 });
5487 view.update(cx, |view, cx| {
5488 view.add_selection_below(&AddSelectionBelow, cx);
5489 assert_eq!(
5490 view.selected_display_ranges(cx),
5491 vec![
5492 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
5493 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 3)
5494 ]
5495 );
5496 });
5497
5498 view.update(cx, |view, cx| {
5499 view.add_selection_below(&AddSelectionBelow, cx);
5500 assert_eq!(
5501 view.selected_display_ranges(cx),
5502 vec![
5503 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
5504 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 3)
5505 ]
5506 );
5507 });
5508
5509 view.update(cx, |view, cx| {
5510 view.add_selection_above(&AddSelectionAbove, cx);
5511 assert_eq!(
5512 view.selected_display_ranges(cx),
5513 vec![DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3)]
5514 );
5515 });
5516
5517 view.update(cx, |view, cx| {
5518 view.add_selection_above(&AddSelectionAbove, cx);
5519 assert_eq!(
5520 view.selected_display_ranges(cx),
5521 vec![DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3)]
5522 );
5523 });
5524
5525 view.update(cx, |view, cx| {
5526 view.select_display_ranges(&[DisplayPoint::new(0, 1)..DisplayPoint::new(1, 4)], cx)
5527 .unwrap();
5528 view.add_selection_below(&AddSelectionBelow, cx);
5529 assert_eq!(
5530 view.selected_display_ranges(cx),
5531 vec![
5532 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
5533 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 4),
5534 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 2),
5535 ]
5536 );
5537 });
5538
5539 view.update(cx, |view, cx| {
5540 view.add_selection_below(&AddSelectionBelow, cx);
5541 assert_eq!(
5542 view.selected_display_ranges(cx),
5543 vec![
5544 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
5545 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 4),
5546 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 2),
5547 DisplayPoint::new(4, 1)..DisplayPoint::new(4, 4),
5548 ]
5549 );
5550 });
5551
5552 view.update(cx, |view, cx| {
5553 view.add_selection_above(&AddSelectionAbove, cx);
5554 assert_eq!(
5555 view.selected_display_ranges(cx),
5556 vec![
5557 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
5558 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 4),
5559 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 2),
5560 ]
5561 );
5562 });
5563
5564 view.update(cx, |view, cx| {
5565 view.select_display_ranges(&[DisplayPoint::new(4, 3)..DisplayPoint::new(1, 1)], cx)
5566 .unwrap();
5567 });
5568 view.update(cx, |view, cx| {
5569 view.add_selection_above(&AddSelectionAbove, cx);
5570 assert_eq!(
5571 view.selected_display_ranges(cx),
5572 vec![
5573 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 1),
5574 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 1),
5575 DisplayPoint::new(3, 2)..DisplayPoint::new(3, 1),
5576 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 1),
5577 ]
5578 );
5579 });
5580
5581 view.update(cx, |view, cx| {
5582 view.add_selection_below(&AddSelectionBelow, cx);
5583 assert_eq!(
5584 view.selected_display_ranges(cx),
5585 vec![
5586 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 1),
5587 DisplayPoint::new(3, 2)..DisplayPoint::new(3, 1),
5588 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 1),
5589 ]
5590 );
5591 });
5592 }
5593
5594 #[gpui::test]
5595 async fn test_select_larger_smaller_syntax_node(mut cx: gpui::TestAppContext) {
5596 let settings = cx.read(EditorSettings::test);
5597 let language = Some(Arc::new(Language::new(
5598 LanguageConfig::default(),
5599 Some(tree_sitter_rust::language()),
5600 )));
5601
5602 let text = r#"
5603 use mod1::mod2::{mod3, mod4};
5604
5605 fn fn_1(param1: bool, param2: &str) {
5606 let var1 = "text";
5607 }
5608 "#
5609 .unindent();
5610
5611 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, None, cx));
5612 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
5613 let (_, view) = cx.add_window(|cx| build_editor(buffer, settings, cx));
5614 view.condition(&cx, |view, cx| !view.buffer.read(cx).is_parsing(cx))
5615 .await;
5616
5617 view.update(&mut cx, |view, cx| {
5618 view.select_display_ranges(
5619 &[
5620 DisplayPoint::new(0, 25)..DisplayPoint::new(0, 25),
5621 DisplayPoint::new(2, 24)..DisplayPoint::new(2, 12),
5622 DisplayPoint::new(3, 18)..DisplayPoint::new(3, 18),
5623 ],
5624 cx,
5625 )
5626 .unwrap();
5627 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
5628 });
5629 assert_eq!(
5630 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
5631 &[
5632 DisplayPoint::new(0, 23)..DisplayPoint::new(0, 27),
5633 DisplayPoint::new(2, 35)..DisplayPoint::new(2, 7),
5634 DisplayPoint::new(3, 15)..DisplayPoint::new(3, 21),
5635 ]
5636 );
5637
5638 view.update(&mut cx, |view, cx| {
5639 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
5640 });
5641 assert_eq!(
5642 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
5643 &[
5644 DisplayPoint::new(0, 16)..DisplayPoint::new(0, 28),
5645 DisplayPoint::new(4, 1)..DisplayPoint::new(2, 0),
5646 ]
5647 );
5648
5649 view.update(&mut cx, |view, cx| {
5650 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
5651 });
5652 assert_eq!(
5653 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
5654 &[DisplayPoint::new(5, 0)..DisplayPoint::new(0, 0)]
5655 );
5656
5657 // Trying to expand the selected syntax node one more time has no effect.
5658 view.update(&mut cx, |view, cx| {
5659 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
5660 });
5661 assert_eq!(
5662 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
5663 &[DisplayPoint::new(5, 0)..DisplayPoint::new(0, 0)]
5664 );
5665
5666 view.update(&mut cx, |view, cx| {
5667 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
5668 });
5669 assert_eq!(
5670 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
5671 &[
5672 DisplayPoint::new(0, 16)..DisplayPoint::new(0, 28),
5673 DisplayPoint::new(4, 1)..DisplayPoint::new(2, 0),
5674 ]
5675 );
5676
5677 view.update(&mut cx, |view, cx| {
5678 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
5679 });
5680 assert_eq!(
5681 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
5682 &[
5683 DisplayPoint::new(0, 23)..DisplayPoint::new(0, 27),
5684 DisplayPoint::new(2, 35)..DisplayPoint::new(2, 7),
5685 DisplayPoint::new(3, 15)..DisplayPoint::new(3, 21),
5686 ]
5687 );
5688
5689 view.update(&mut cx, |view, cx| {
5690 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
5691 });
5692 assert_eq!(
5693 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
5694 &[
5695 DisplayPoint::new(0, 25)..DisplayPoint::new(0, 25),
5696 DisplayPoint::new(2, 24)..DisplayPoint::new(2, 12),
5697 DisplayPoint::new(3, 18)..DisplayPoint::new(3, 18),
5698 ]
5699 );
5700
5701 // Trying to shrink the selected syntax node one more time has no effect.
5702 view.update(&mut cx, |view, cx| {
5703 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
5704 });
5705 assert_eq!(
5706 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
5707 &[
5708 DisplayPoint::new(0, 25)..DisplayPoint::new(0, 25),
5709 DisplayPoint::new(2, 24)..DisplayPoint::new(2, 12),
5710 DisplayPoint::new(3, 18)..DisplayPoint::new(3, 18),
5711 ]
5712 );
5713
5714 // Ensure that we keep expanding the selection if the larger selection starts or ends within
5715 // a fold.
5716 view.update(&mut cx, |view, cx| {
5717 view.fold_ranges(
5718 vec![
5719 Point::new(0, 21)..Point::new(0, 24),
5720 Point::new(3, 20)..Point::new(3, 22),
5721 ],
5722 cx,
5723 );
5724 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
5725 });
5726 assert_eq!(
5727 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
5728 &[
5729 DisplayPoint::new(0, 16)..DisplayPoint::new(0, 28),
5730 DisplayPoint::new(2, 35)..DisplayPoint::new(2, 7),
5731 DisplayPoint::new(3, 4)..DisplayPoint::new(3, 23),
5732 ]
5733 );
5734 }
5735
5736 #[gpui::test]
5737 async fn test_autoindent_selections(mut cx: gpui::TestAppContext) {
5738 let settings = cx.read(EditorSettings::test);
5739 let language = Some(Arc::new(
5740 Language::new(
5741 LanguageConfig {
5742 brackets: vec![
5743 BracketPair {
5744 start: "{".to_string(),
5745 end: "}".to_string(),
5746 close: false,
5747 newline: true,
5748 },
5749 BracketPair {
5750 start: "(".to_string(),
5751 end: ")".to_string(),
5752 close: false,
5753 newline: true,
5754 },
5755 ],
5756 ..Default::default()
5757 },
5758 Some(tree_sitter_rust::language()),
5759 )
5760 .with_indents_query(
5761 r#"
5762 (_ "(" ")" @end) @indent
5763 (_ "{" "}" @end) @indent
5764 "#,
5765 )
5766 .unwrap(),
5767 ));
5768
5769 let text = "fn a() {}";
5770
5771 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, None, cx));
5772 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
5773 let (_, editor) = cx.add_window(|cx| build_editor(buffer, settings, cx));
5774 editor
5775 .condition(&cx, |editor, cx| !editor.buffer.read(cx).is_parsing(cx))
5776 .await;
5777
5778 editor.update(&mut cx, |editor, cx| {
5779 editor.select_ranges([5..5, 8..8, 9..9], None, cx);
5780 editor.newline(&Newline, cx);
5781 assert_eq!(editor.text(cx), "fn a(\n \n) {\n \n}\n");
5782 assert_eq!(
5783 editor.selected_ranges(cx),
5784 &[
5785 Point::new(1, 4)..Point::new(1, 4),
5786 Point::new(3, 4)..Point::new(3, 4),
5787 Point::new(5, 0)..Point::new(5, 0)
5788 ]
5789 );
5790 });
5791 }
5792
5793 #[gpui::test]
5794 async fn test_autoclose_pairs(mut cx: gpui::TestAppContext) {
5795 let settings = cx.read(EditorSettings::test);
5796 let language = Some(Arc::new(Language::new(
5797 LanguageConfig {
5798 brackets: vec![
5799 BracketPair {
5800 start: "{".to_string(),
5801 end: "}".to_string(),
5802 close: true,
5803 newline: true,
5804 },
5805 BracketPair {
5806 start: "/*".to_string(),
5807 end: " */".to_string(),
5808 close: true,
5809 newline: true,
5810 },
5811 ],
5812 ..Default::default()
5813 },
5814 Some(tree_sitter_rust::language()),
5815 )));
5816
5817 let text = r#"
5818 a
5819
5820 /
5821
5822 "#
5823 .unindent();
5824
5825 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, None, cx));
5826 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
5827 let (_, view) = cx.add_window(|cx| build_editor(buffer, settings, cx));
5828 view.condition(&cx, |view, cx| !view.buffer.read(cx).is_parsing(cx))
5829 .await;
5830
5831 view.update(&mut cx, |view, cx| {
5832 view.select_display_ranges(
5833 &[
5834 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
5835 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
5836 ],
5837 cx,
5838 )
5839 .unwrap();
5840 view.handle_input(&Input("{".to_string()), cx);
5841 view.handle_input(&Input("{".to_string()), cx);
5842 view.handle_input(&Input("{".to_string()), cx);
5843 assert_eq!(
5844 view.text(cx),
5845 "
5846 {{{}}}
5847 {{{}}}
5848 /
5849
5850 "
5851 .unindent()
5852 );
5853
5854 view.move_right(&MoveRight, cx);
5855 view.handle_input(&Input("}".to_string()), cx);
5856 view.handle_input(&Input("}".to_string()), cx);
5857 view.handle_input(&Input("}".to_string()), cx);
5858 assert_eq!(
5859 view.text(cx),
5860 "
5861 {{{}}}}
5862 {{{}}}}
5863 /
5864
5865 "
5866 .unindent()
5867 );
5868
5869 view.undo(&Undo, cx);
5870 view.handle_input(&Input("/".to_string()), cx);
5871 view.handle_input(&Input("*".to_string()), cx);
5872 assert_eq!(
5873 view.text(cx),
5874 "
5875 /* */
5876 /* */
5877 /
5878
5879 "
5880 .unindent()
5881 );
5882
5883 view.undo(&Undo, cx);
5884 view.select_display_ranges(
5885 &[
5886 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
5887 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
5888 ],
5889 cx,
5890 )
5891 .unwrap();
5892 view.handle_input(&Input("*".to_string()), cx);
5893 assert_eq!(
5894 view.text(cx),
5895 "
5896 a
5897
5898 /*
5899 *
5900 "
5901 .unindent()
5902 );
5903 });
5904 }
5905
5906 #[gpui::test]
5907 async fn test_toggle_comment(mut cx: gpui::TestAppContext) {
5908 let settings = cx.read(EditorSettings::test);
5909 let language = Some(Arc::new(Language::new(
5910 LanguageConfig {
5911 line_comment: Some("// ".to_string()),
5912 ..Default::default()
5913 },
5914 Some(tree_sitter_rust::language()),
5915 )));
5916
5917 let text = "
5918 fn a() {
5919 //b();
5920 // c();
5921 // d();
5922 }
5923 "
5924 .unindent();
5925
5926 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, None, cx));
5927 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
5928 let (_, view) = cx.add_window(|cx| build_editor(buffer, settings, cx));
5929
5930 view.update(&mut cx, |editor, cx| {
5931 // If multiple selections intersect a line, the line is only
5932 // toggled once.
5933 editor
5934 .select_display_ranges(
5935 &[
5936 DisplayPoint::new(1, 3)..DisplayPoint::new(2, 3),
5937 DisplayPoint::new(3, 5)..DisplayPoint::new(3, 6),
5938 ],
5939 cx,
5940 )
5941 .unwrap();
5942 editor.toggle_comments(&ToggleComments, cx);
5943 assert_eq!(
5944 editor.text(cx),
5945 "
5946 fn a() {
5947 b();
5948 c();
5949 d();
5950 }
5951 "
5952 .unindent()
5953 );
5954
5955 // The comment prefix is inserted at the same column for every line
5956 // in a selection.
5957 editor
5958 .select_display_ranges(&[DisplayPoint::new(1, 3)..DisplayPoint::new(3, 6)], cx)
5959 .unwrap();
5960 editor.toggle_comments(&ToggleComments, cx);
5961 assert_eq!(
5962 editor.text(cx),
5963 "
5964 fn a() {
5965 // b();
5966 // c();
5967 // d();
5968 }
5969 "
5970 .unindent()
5971 );
5972
5973 // If a selection ends at the beginning of a line, that line is not toggled.
5974 editor
5975 .select_display_ranges(&[DisplayPoint::new(2, 0)..DisplayPoint::new(3, 0)], cx)
5976 .unwrap();
5977 editor.toggle_comments(&ToggleComments, cx);
5978 assert_eq!(
5979 editor.text(cx),
5980 "
5981 fn a() {
5982 // b();
5983 c();
5984 // d();
5985 }
5986 "
5987 .unindent()
5988 );
5989 });
5990 }
5991
5992 #[gpui::test]
5993 fn test_editing_disjoint_excerpts(cx: &mut gpui::MutableAppContext) {
5994 let settings = EditorSettings::test(cx);
5995 let buffer = cx.add_model(|cx| Buffer::new(0, sample_text(3, 4, 'a'), cx));
5996 let multibuffer = cx.add_model(|cx| {
5997 let mut multibuffer = MultiBuffer::new(0);
5998 multibuffer.push_excerpt(
5999 ExcerptProperties {
6000 buffer: &buffer,
6001 range: Point::new(0, 0)..Point::new(0, 4),
6002 },
6003 cx,
6004 );
6005 multibuffer.push_excerpt(
6006 ExcerptProperties {
6007 buffer: &buffer,
6008 range: Point::new(1, 0)..Point::new(1, 4),
6009 },
6010 cx,
6011 );
6012 multibuffer
6013 });
6014
6015 assert_eq!(multibuffer.read(cx).read(cx).text(), "aaaa\nbbbb");
6016
6017 let (_, view) = cx.add_window(Default::default(), |cx| {
6018 build_editor(multibuffer, settings, cx)
6019 });
6020 view.update(cx, |view, cx| {
6021 view.select_display_ranges(
6022 &[
6023 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
6024 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
6025 ],
6026 cx,
6027 )
6028 .unwrap();
6029
6030 view.handle_input(&Input("X".to_string()), cx);
6031 assert_eq!(view.text(cx), "Xaaaa\nXbbbb");
6032 assert_eq!(
6033 view.selected_display_ranges(cx),
6034 &[
6035 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
6036 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
6037 ]
6038 )
6039 });
6040 }
6041
6042 #[gpui::test]
6043 fn test_editing_overlapping_excerpts(cx: &mut gpui::MutableAppContext) {
6044 let settings = EditorSettings::test(cx);
6045 let buffer = cx.add_model(|cx| Buffer::new(0, sample_text(3, 4, 'a'), cx));
6046 let multibuffer = cx.add_model(|cx| {
6047 let mut multibuffer = MultiBuffer::new(0);
6048 multibuffer.push_excerpt(
6049 ExcerptProperties {
6050 buffer: &buffer,
6051 range: Point::new(0, 0)..Point::new(1, 4),
6052 },
6053 cx,
6054 );
6055 multibuffer.push_excerpt(
6056 ExcerptProperties {
6057 buffer: &buffer,
6058 range: Point::new(1, 0)..Point::new(2, 4),
6059 },
6060 cx,
6061 );
6062 multibuffer
6063 });
6064
6065 assert_eq!(
6066 multibuffer.read(cx).read(cx).text(),
6067 "aaaa\nbbbb\nbbbb\ncccc"
6068 );
6069
6070 let (_, view) = cx.add_window(Default::default(), |cx| {
6071 build_editor(multibuffer, settings, cx)
6072 });
6073 view.update(cx, |view, cx| {
6074 view.select_display_ranges(
6075 &[
6076 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
6077 DisplayPoint::new(2, 3)..DisplayPoint::new(2, 3),
6078 ],
6079 cx,
6080 )
6081 .unwrap();
6082
6083 view.handle_input(&Input("X".to_string()), cx);
6084 assert_eq!(view.text(cx), "aaaa\nbXbbXb\nbXbbXb\ncccc");
6085 assert_eq!(
6086 view.selected_display_ranges(cx),
6087 &[
6088 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
6089 DisplayPoint::new(2, 5)..DisplayPoint::new(2, 5),
6090 ]
6091 )
6092 });
6093 }
6094
6095 #[gpui::test]
6096 async fn test_extra_newline_insertion(mut cx: gpui::TestAppContext) {
6097 let settings = cx.read(EditorSettings::test);
6098 let language = Some(Arc::new(Language::new(
6099 LanguageConfig {
6100 brackets: vec![
6101 BracketPair {
6102 start: "{".to_string(),
6103 end: "}".to_string(),
6104 close: true,
6105 newline: true,
6106 },
6107 BracketPair {
6108 start: "/* ".to_string(),
6109 end: " */".to_string(),
6110 close: true,
6111 newline: true,
6112 },
6113 ],
6114 ..Default::default()
6115 },
6116 Some(tree_sitter_rust::language()),
6117 )));
6118
6119 let text = concat!(
6120 "{ }\n", // Suppress rustfmt
6121 " x\n", //
6122 " /* */\n", //
6123 "x\n", //
6124 "{{} }\n", //
6125 );
6126
6127 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, None, cx));
6128 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
6129 let (_, view) = cx.add_window(|cx| build_editor(buffer, settings, cx));
6130 view.condition(&cx, |view, cx| !view.buffer.read(cx).is_parsing(cx))
6131 .await;
6132
6133 view.update(&mut cx, |view, cx| {
6134 view.select_display_ranges(
6135 &[
6136 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 3),
6137 DisplayPoint::new(2, 5)..DisplayPoint::new(2, 5),
6138 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 4),
6139 ],
6140 cx,
6141 )
6142 .unwrap();
6143 view.newline(&Newline, cx);
6144
6145 assert_eq!(
6146 view.buffer().read(cx).read(cx).text(),
6147 concat!(
6148 "{ \n", // Suppress rustfmt
6149 "\n", //
6150 "}\n", //
6151 " x\n", //
6152 " /* \n", //
6153 " \n", //
6154 " */\n", //
6155 "x\n", //
6156 "{{} \n", //
6157 "}\n", //
6158 )
6159 );
6160 });
6161 }
6162
6163 impl Editor {
6164 fn selected_ranges<D: TextDimension + Ord + Sub<D, Output = D>>(
6165 &self,
6166 cx: &mut MutableAppContext,
6167 ) -> Vec<Range<D>> {
6168 self.local_selections::<D>(cx)
6169 .iter()
6170 .map(|s| {
6171 if s.reversed {
6172 s.end.clone()..s.start.clone()
6173 } else {
6174 s.start.clone()..s.end.clone()
6175 }
6176 })
6177 .collect()
6178 }
6179
6180 fn selected_display_ranges(&self, cx: &mut MutableAppContext) -> Vec<Range<DisplayPoint>> {
6181 let display_map = self
6182 .display_map
6183 .update(cx, |display_map, cx| display_map.snapshot(cx));
6184 self.selections
6185 .iter()
6186 .chain(
6187 self.pending_selection
6188 .as_ref()
6189 .map(|pending| &pending.selection),
6190 )
6191 .map(|s| {
6192 if s.reversed {
6193 s.end.to_display_point(&display_map)..s.start.to_display_point(&display_map)
6194 } else {
6195 s.start.to_display_point(&display_map)..s.end.to_display_point(&display_map)
6196 }
6197 })
6198 .collect()
6199 }
6200 }
6201
6202 fn empty_range(row: usize, column: usize) -> Range<DisplayPoint> {
6203 let point = DisplayPoint::new(row as u32, column as u32);
6204 point..point
6205 }
6206
6207 fn build_editor(
6208 buffer: ModelHandle<MultiBuffer>,
6209 settings: EditorSettings,
6210 cx: &mut ViewContext<Editor>,
6211 ) -> Editor {
6212 Editor::for_buffer(buffer, Arc::new(move |_| settings.clone()), cx)
6213 }
6214}
6215
6216trait RangeExt<T> {
6217 fn sorted(&self) -> Range<T>;
6218 fn to_inclusive(&self) -> RangeInclusive<T>;
6219}
6220
6221impl<T: Ord + Clone> RangeExt<T> for Range<T> {
6222 fn sorted(&self) -> Self {
6223 cmp::min(&self.start, &self.end).clone()..cmp::max(&self.start, &self.end).clone()
6224 }
6225
6226 fn to_inclusive(&self) -> RangeInclusive<T> {
6227 self.start.clone()..=self.end.clone()
6228 }
6229}