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).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).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.prev_line_boundary(Point::new(start_row - 1, 0));
1728
1729 // Don't move lines across excerpts
1730 if !buffer.range_contains_excerpt_boundary(insertion_point..range_to_move.end) {
1731 let text = buffer
1732 .text_for_range(range_to_move.clone())
1733 .flat_map(|s| s.chars())
1734 .skip(1)
1735 .chain(['\n'])
1736 .collect::<String>();
1737
1738 edits.push((insertion_point..insertion_point, text));
1739 edits.push((range_to_move.clone(), String::new()));
1740
1741 let row_delta = range_to_move.start.row - insertion_point.row + 1;
1742
1743 // Move selections up
1744 new_selections.extend(contiguous_row_selections.drain(..).map(
1745 |mut selection| {
1746 selection.start.row -= row_delta;
1747 selection.end.row -= row_delta;
1748 selection
1749 },
1750 ));
1751
1752 // Move folds up
1753 unfold_ranges.push(range_to_move.clone());
1754 for fold in display_map.folds_in_range(
1755 buffer.anchor_before(range_to_move.start)
1756 ..buffer.anchor_after(range_to_move.end),
1757 ) {
1758 let mut start = fold.start.to_point(&buffer);
1759 let mut end = fold.end.to_point(&buffer);
1760 start.row -= row_delta;
1761 end.row -= row_delta;
1762 refold_ranges.push(start..end);
1763 }
1764 }
1765 }
1766
1767 // If we didn't move line(s), preserve the existing selections
1768 new_selections.extend(contiguous_row_selections.drain(..));
1769 }
1770
1771 self.start_transaction(cx);
1772 self.unfold_ranges(unfold_ranges, cx);
1773 self.buffer.update(cx, |buffer, cx| {
1774 for (range, text) in edits.into_iter().rev() {
1775 buffer.edit([range], text, cx);
1776 }
1777 });
1778 self.fold_ranges(refold_ranges, cx);
1779 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
1780 self.end_transaction(cx);
1781 }
1782
1783 pub fn move_line_down(&mut self, _: &MoveLineDown, cx: &mut ViewContext<Self>) {
1784 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1785 let buffer = self.buffer.read(cx).snapshot(cx);
1786
1787 let mut edits = Vec::new();
1788 let mut unfold_ranges = Vec::new();
1789 let mut refold_ranges = Vec::new();
1790
1791 let selections = self.local_selections::<Point>(cx);
1792 let mut selections = selections.iter().peekable();
1793 let mut contiguous_row_selections = Vec::new();
1794 let mut new_selections = Vec::new();
1795
1796 while let Some(selection) = selections.next() {
1797 // Find all the selections that span a contiguous row range
1798 contiguous_row_selections.push(selection.clone());
1799 let start_row = selection.start.row;
1800 let mut end_row = if selection.end.column > 0 || selection.is_empty() {
1801 display_map.next_line_boundary(selection.end).row + 1
1802 } else {
1803 selection.end.row
1804 };
1805
1806 while let Some(next_selection) = selections.peek() {
1807 if next_selection.start.row <= end_row {
1808 end_row = if next_selection.end.column > 0 || next_selection.is_empty() {
1809 display_map.next_line_boundary(next_selection.end).row + 1
1810 } else {
1811 next_selection.end.row
1812 };
1813 contiguous_row_selections.push(selections.next().unwrap().clone());
1814 } else {
1815 break;
1816 }
1817 }
1818
1819 // Move the text spanned by the row range to be after the last line of the row range
1820 if end_row <= buffer.max_point().row {
1821 let range_to_move = Point::new(start_row, 0)..Point::new(end_row, 0);
1822 let insertion_point = display_map.next_line_boundary(Point::new(end_row, 0));
1823
1824 // Don't move lines across excerpt boundaries
1825 if !buffer.range_contains_excerpt_boundary(range_to_move.start..insertion_point) {
1826 let mut text = String::from("\n");
1827 text.extend(buffer.text_for_range(range_to_move.clone()));
1828 text.pop(); // Drop trailing newline
1829 edits.push((range_to_move.clone(), String::new()));
1830 edits.push((insertion_point..insertion_point, text));
1831
1832 let row_delta = insertion_point.row - range_to_move.end.row + 1;
1833
1834 // Move selections down
1835 new_selections.extend(contiguous_row_selections.drain(..).map(
1836 |mut selection| {
1837 selection.start.row += row_delta;
1838 selection.end.row += row_delta;
1839 selection
1840 },
1841 ));
1842
1843 // Move folds down
1844 unfold_ranges.push(range_to_move.clone());
1845 for fold in display_map.folds_in_range(
1846 buffer.anchor_before(range_to_move.start)
1847 ..buffer.anchor_after(range_to_move.end),
1848 ) {
1849 let mut start = fold.start.to_point(&buffer);
1850 let mut end = fold.end.to_point(&buffer);
1851 start.row += row_delta;
1852 end.row += row_delta;
1853 refold_ranges.push(start..end);
1854 }
1855 }
1856 }
1857
1858 // If we didn't move line(s), preserve the existing selections
1859 new_selections.extend(contiguous_row_selections.drain(..));
1860 }
1861
1862 self.start_transaction(cx);
1863 self.unfold_ranges(unfold_ranges, cx);
1864 self.buffer.update(cx, |buffer, cx| {
1865 for (range, text) in edits.into_iter().rev() {
1866 buffer.edit([range], text, cx);
1867 }
1868 });
1869 self.fold_ranges(refold_ranges, cx);
1870 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
1871 self.end_transaction(cx);
1872 }
1873
1874 pub fn cut(&mut self, _: &Cut, cx: &mut ViewContext<Self>) {
1875 self.start_transaction(cx);
1876 let mut text = String::new();
1877 let mut selections = self.local_selections::<Point>(cx);
1878 let mut clipboard_selections = Vec::with_capacity(selections.len());
1879 {
1880 let buffer = self.buffer.read(cx).read(cx);
1881 let max_point = buffer.max_point();
1882 for selection in &mut selections {
1883 let is_entire_line = selection.is_empty();
1884 if is_entire_line {
1885 selection.start = Point::new(selection.start.row, 0);
1886 selection.end = cmp::min(max_point, Point::new(selection.end.row + 1, 0));
1887 }
1888 let mut len = 0;
1889 for chunk in buffer.text_for_range(selection.start..selection.end) {
1890 text.push_str(chunk);
1891 len += chunk.len();
1892 }
1893 clipboard_selections.push(ClipboardSelection {
1894 len,
1895 is_entire_line,
1896 });
1897 }
1898 }
1899 self.update_selections(selections, Some(Autoscroll::Fit), cx);
1900 self.insert("", cx);
1901 self.end_transaction(cx);
1902
1903 cx.as_mut()
1904 .write_to_clipboard(ClipboardItem::new(text).with_metadata(clipboard_selections));
1905 }
1906
1907 pub fn copy(&mut self, _: &Copy, cx: &mut ViewContext<Self>) {
1908 let selections = self.local_selections::<Point>(cx);
1909 let mut text = String::new();
1910 let mut clipboard_selections = Vec::with_capacity(selections.len());
1911 {
1912 let buffer = self.buffer.read(cx).read(cx);
1913 let max_point = buffer.max_point();
1914 for selection in selections.iter() {
1915 let mut start = selection.start;
1916 let mut end = selection.end;
1917 let is_entire_line = selection.is_empty();
1918 if is_entire_line {
1919 start = Point::new(start.row, 0);
1920 end = cmp::min(max_point, Point::new(start.row + 1, 0));
1921 }
1922 let mut len = 0;
1923 for chunk in buffer.text_for_range(start..end) {
1924 text.push_str(chunk);
1925 len += chunk.len();
1926 }
1927 clipboard_selections.push(ClipboardSelection {
1928 len,
1929 is_entire_line,
1930 });
1931 }
1932 }
1933
1934 cx.as_mut()
1935 .write_to_clipboard(ClipboardItem::new(text).with_metadata(clipboard_selections));
1936 }
1937
1938 pub fn paste(&mut self, _: &Paste, cx: &mut ViewContext<Self>) {
1939 if let Some(item) = cx.as_mut().read_from_clipboard() {
1940 let clipboard_text = item.text();
1941 if let Some(mut clipboard_selections) = item.metadata::<Vec<ClipboardSelection>>() {
1942 let mut selections = self.local_selections::<usize>(cx);
1943 let all_selections_were_entire_line =
1944 clipboard_selections.iter().all(|s| s.is_entire_line);
1945 if clipboard_selections.len() != selections.len() {
1946 clipboard_selections.clear();
1947 }
1948
1949 let mut delta = 0_isize;
1950 let mut start_offset = 0;
1951 for (i, selection) in selections.iter_mut().enumerate() {
1952 let to_insert;
1953 let entire_line;
1954 if let Some(clipboard_selection) = clipboard_selections.get(i) {
1955 let end_offset = start_offset + clipboard_selection.len;
1956 to_insert = &clipboard_text[start_offset..end_offset];
1957 entire_line = clipboard_selection.is_entire_line;
1958 start_offset = end_offset
1959 } else {
1960 to_insert = clipboard_text.as_str();
1961 entire_line = all_selections_were_entire_line;
1962 }
1963
1964 selection.start = (selection.start as isize + delta) as usize;
1965 selection.end = (selection.end as isize + delta) as usize;
1966
1967 self.buffer.update(cx, |buffer, cx| {
1968 // If the corresponding selection was empty when this slice of the
1969 // clipboard text was written, then the entire line containing the
1970 // selection was copied. If this selection is also currently empty,
1971 // then paste the line before the current line of the buffer.
1972 let range = if selection.is_empty() && entire_line {
1973 let column = selection.start.to_point(&buffer.read(cx)).column as usize;
1974 let line_start = selection.start - column;
1975 line_start..line_start
1976 } else {
1977 selection.start..selection.end
1978 };
1979
1980 delta += to_insert.len() as isize - range.len() as isize;
1981 buffer.edit([range], to_insert, cx);
1982 selection.start += to_insert.len();
1983 selection.end = selection.start;
1984 });
1985 }
1986 self.update_selections(selections, Some(Autoscroll::Fit), cx);
1987 } else {
1988 self.insert(clipboard_text, cx);
1989 }
1990 }
1991 }
1992
1993 pub fn undo(&mut self, _: &Undo, cx: &mut ViewContext<Self>) {
1994 if let Some(tx_id) = self.buffer.update(cx, |buffer, cx| buffer.undo(cx)) {
1995 if let Some((selections, _)) = self.selection_history.get(&tx_id).cloned() {
1996 self.set_selections(selections, cx);
1997 }
1998 self.request_autoscroll(Autoscroll::Fit, cx);
1999 }
2000 }
2001
2002 pub fn redo(&mut self, _: &Redo, cx: &mut ViewContext<Self>) {
2003 if let Some(tx_id) = self.buffer.update(cx, |buffer, cx| buffer.redo(cx)) {
2004 if let Some((_, Some(selections))) = self.selection_history.get(&tx_id).cloned() {
2005 self.set_selections(selections, cx);
2006 }
2007 self.request_autoscroll(Autoscroll::Fit, cx);
2008 }
2009 }
2010
2011 pub fn move_left(&mut self, _: &MoveLeft, cx: &mut ViewContext<Self>) {
2012 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2013 let mut selections = self.local_selections::<Point>(cx);
2014 for selection in &mut selections {
2015 let start = selection.start.to_display_point(&display_map);
2016 let end = selection.end.to_display_point(&display_map);
2017
2018 if start != end {
2019 selection.end = selection.start.clone();
2020 } else {
2021 let cursor = movement::left(&display_map, start)
2022 .unwrap()
2023 .to_point(&display_map);
2024 selection.start = cursor.clone();
2025 selection.end = cursor;
2026 }
2027 selection.reversed = false;
2028 selection.goal = SelectionGoal::None;
2029 }
2030 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2031 }
2032
2033 pub fn select_left(&mut self, _: &SelectLeft, cx: &mut ViewContext<Self>) {
2034 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2035 let mut selections = self.local_selections::<Point>(cx);
2036 for selection in &mut selections {
2037 let head = selection.head().to_display_point(&display_map);
2038 let cursor = movement::left(&display_map, head)
2039 .unwrap()
2040 .to_point(&display_map);
2041 selection.set_head(cursor);
2042 selection.goal = SelectionGoal::None;
2043 }
2044 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2045 }
2046
2047 pub fn move_right(&mut self, _: &MoveRight, cx: &mut ViewContext<Self>) {
2048 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2049 let mut selections = self.local_selections::<Point>(cx);
2050 for selection in &mut selections {
2051 let start = selection.start.to_display_point(&display_map);
2052 let end = selection.end.to_display_point(&display_map);
2053
2054 if start != end {
2055 selection.start = selection.end.clone();
2056 } else {
2057 let cursor = movement::right(&display_map, end)
2058 .unwrap()
2059 .to_point(&display_map);
2060 selection.start = cursor;
2061 selection.end = cursor;
2062 }
2063 selection.reversed = false;
2064 selection.goal = SelectionGoal::None;
2065 }
2066 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2067 }
2068
2069 pub fn select_right(&mut self, _: &SelectRight, cx: &mut ViewContext<Self>) {
2070 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2071 let mut selections = self.local_selections::<Point>(cx);
2072 for selection in &mut selections {
2073 let head = selection.head().to_display_point(&display_map);
2074 let cursor = movement::right(&display_map, head)
2075 .unwrap()
2076 .to_point(&display_map);
2077 selection.set_head(cursor);
2078 selection.goal = SelectionGoal::None;
2079 }
2080 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2081 }
2082
2083 pub fn move_up(&mut self, _: &MoveUp, cx: &mut ViewContext<Self>) {
2084 if matches!(self.mode, EditorMode::SingleLine) {
2085 cx.propagate_action();
2086 return;
2087 }
2088
2089 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2090 let mut selections = self.local_selections::<Point>(cx);
2091 for selection in &mut selections {
2092 let start = selection.start.to_display_point(&display_map);
2093 let end = selection.end.to_display_point(&display_map);
2094 if start != end {
2095 selection.goal = SelectionGoal::None;
2096 }
2097
2098 let (start, goal) = movement::up(&display_map, start, selection.goal).unwrap();
2099 let cursor = start.to_point(&display_map);
2100 selection.start = cursor;
2101 selection.end = cursor;
2102 selection.goal = goal;
2103 selection.reversed = false;
2104 }
2105 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2106 }
2107
2108 pub fn select_up(&mut self, _: &SelectUp, cx: &mut ViewContext<Self>) {
2109 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2110 let mut selections = self.local_selections::<Point>(cx);
2111 for selection in &mut selections {
2112 let head = selection.head().to_display_point(&display_map);
2113 let (head, goal) = movement::up(&display_map, head, selection.goal).unwrap();
2114 let cursor = head.to_point(&display_map);
2115 selection.set_head(cursor);
2116 selection.goal = goal;
2117 }
2118 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2119 }
2120
2121 pub fn move_down(&mut self, _: &MoveDown, cx: &mut ViewContext<Self>) {
2122 if matches!(self.mode, EditorMode::SingleLine) {
2123 cx.propagate_action();
2124 return;
2125 }
2126
2127 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2128 let mut selections = self.local_selections::<Point>(cx);
2129 for selection in &mut selections {
2130 let start = selection.start.to_display_point(&display_map);
2131 let end = selection.end.to_display_point(&display_map);
2132 if start != end {
2133 selection.goal = SelectionGoal::None;
2134 }
2135
2136 let (start, goal) = movement::down(&display_map, end, selection.goal).unwrap();
2137 let cursor = start.to_point(&display_map);
2138 selection.start = cursor;
2139 selection.end = cursor;
2140 selection.goal = goal;
2141 selection.reversed = false;
2142 }
2143 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2144 }
2145
2146 pub fn select_down(&mut self, _: &SelectDown, cx: &mut ViewContext<Self>) {
2147 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2148 let mut selections = self.local_selections::<Point>(cx);
2149 for selection in &mut selections {
2150 let head = selection.head().to_display_point(&display_map);
2151 let (head, goal) = movement::down(&display_map, head, selection.goal).unwrap();
2152 let cursor = head.to_point(&display_map);
2153 selection.set_head(cursor);
2154 selection.goal = goal;
2155 }
2156 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2157 }
2158
2159 pub fn move_to_previous_word_boundary(
2160 &mut self,
2161 _: &MoveToPreviousWordBoundary,
2162 cx: &mut ViewContext<Self>,
2163 ) {
2164 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2165 let mut selections = self.local_selections::<Point>(cx);
2166 for selection in &mut selections {
2167 let head = selection.head().to_display_point(&display_map);
2168 let cursor = movement::prev_word_boundary(&display_map, head).to_point(&display_map);
2169 selection.start = cursor.clone();
2170 selection.end = cursor;
2171 selection.reversed = false;
2172 selection.goal = SelectionGoal::None;
2173 }
2174 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2175 }
2176
2177 pub fn select_to_previous_word_boundary(
2178 &mut self,
2179 _: &SelectToPreviousWordBoundary,
2180 cx: &mut ViewContext<Self>,
2181 ) {
2182 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2183 let mut selections = self.local_selections::<Point>(cx);
2184 for selection in &mut selections {
2185 let head = selection.head().to_display_point(&display_map);
2186 let cursor = movement::prev_word_boundary(&display_map, head).to_point(&display_map);
2187 selection.set_head(cursor);
2188 selection.goal = SelectionGoal::None;
2189 }
2190 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2191 }
2192
2193 pub fn delete_to_previous_word_boundary(
2194 &mut self,
2195 _: &DeleteToPreviousWordBoundary,
2196 cx: &mut ViewContext<Self>,
2197 ) {
2198 self.start_transaction(cx);
2199 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2200 let mut selections = self.local_selections::<Point>(cx);
2201 for selection in &mut selections {
2202 if selection.is_empty() {
2203 let head = selection.head().to_display_point(&display_map);
2204 let cursor =
2205 movement::prev_word_boundary(&display_map, head).to_point(&display_map);
2206 selection.set_head(cursor);
2207 selection.goal = SelectionGoal::None;
2208 }
2209 }
2210 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2211 self.insert("", cx);
2212 self.end_transaction(cx);
2213 }
2214
2215 pub fn move_to_next_word_boundary(
2216 &mut self,
2217 _: &MoveToNextWordBoundary,
2218 cx: &mut ViewContext<Self>,
2219 ) {
2220 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2221 let mut selections = self.local_selections::<Point>(cx);
2222 for selection in &mut selections {
2223 let head = selection.head().to_display_point(&display_map);
2224 let cursor = movement::next_word_boundary(&display_map, head).to_point(&display_map);
2225 selection.start = cursor;
2226 selection.end = cursor;
2227 selection.reversed = false;
2228 selection.goal = SelectionGoal::None;
2229 }
2230 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2231 }
2232
2233 pub fn select_to_next_word_boundary(
2234 &mut self,
2235 _: &SelectToNextWordBoundary,
2236 cx: &mut ViewContext<Self>,
2237 ) {
2238 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2239 let mut selections = self.local_selections::<Point>(cx);
2240 for selection in &mut selections {
2241 let head = selection.head().to_display_point(&display_map);
2242 let cursor = movement::next_word_boundary(&display_map, head).to_point(&display_map);
2243 selection.set_head(cursor);
2244 selection.goal = SelectionGoal::None;
2245 }
2246 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2247 }
2248
2249 pub fn delete_to_next_word_boundary(
2250 &mut self,
2251 _: &DeleteToNextWordBoundary,
2252 cx: &mut ViewContext<Self>,
2253 ) {
2254 self.start_transaction(cx);
2255 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2256 let mut selections = self.local_selections::<Point>(cx);
2257 for selection in &mut selections {
2258 if selection.is_empty() {
2259 let head = selection.head().to_display_point(&display_map);
2260 let cursor =
2261 movement::next_word_boundary(&display_map, head).to_point(&display_map);
2262 selection.set_head(cursor);
2263 selection.goal = SelectionGoal::None;
2264 }
2265 }
2266 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2267 self.insert("", cx);
2268 self.end_transaction(cx);
2269 }
2270
2271 pub fn move_to_beginning_of_line(
2272 &mut self,
2273 _: &MoveToBeginningOfLine,
2274 cx: &mut ViewContext<Self>,
2275 ) {
2276 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2277 let mut selections = self.local_selections::<Point>(cx);
2278 for selection in &mut selections {
2279 let head = selection.head().to_display_point(&display_map);
2280 let new_head = movement::line_beginning(&display_map, head, true);
2281 let cursor = new_head.to_point(&display_map);
2282 selection.start = cursor;
2283 selection.end = cursor;
2284 selection.reversed = false;
2285 selection.goal = SelectionGoal::None;
2286 }
2287 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2288 }
2289
2290 pub fn select_to_beginning_of_line(
2291 &mut self,
2292 SelectToBeginningOfLine(toggle_indent): &SelectToBeginningOfLine,
2293 cx: &mut ViewContext<Self>,
2294 ) {
2295 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2296 let mut selections = self.local_selections::<Point>(cx);
2297 for selection in &mut selections {
2298 let head = selection.head().to_display_point(&display_map);
2299 let new_head = movement::line_beginning(&display_map, head, *toggle_indent);
2300 selection.set_head(new_head.to_point(&display_map));
2301 selection.goal = SelectionGoal::None;
2302 }
2303 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2304 }
2305
2306 pub fn delete_to_beginning_of_line(
2307 &mut self,
2308 _: &DeleteToBeginningOfLine,
2309 cx: &mut ViewContext<Self>,
2310 ) {
2311 self.start_transaction(cx);
2312 self.select_to_beginning_of_line(&SelectToBeginningOfLine(false), cx);
2313 self.backspace(&Backspace, cx);
2314 self.end_transaction(cx);
2315 }
2316
2317 pub fn move_to_end_of_line(&mut self, _: &MoveToEndOfLine, cx: &mut ViewContext<Self>) {
2318 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2319 let mut selections = self.local_selections::<Point>(cx);
2320 {
2321 for selection in &mut selections {
2322 let head = selection.head().to_display_point(&display_map);
2323 let new_head = movement::line_end(&display_map, head);
2324 let anchor = new_head.to_point(&display_map);
2325 selection.start = anchor.clone();
2326 selection.end = anchor;
2327 selection.reversed = false;
2328 selection.goal = SelectionGoal::None;
2329 }
2330 }
2331 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2332 }
2333
2334 pub fn select_to_end_of_line(&mut self, _: &SelectToEndOfLine, cx: &mut ViewContext<Self>) {
2335 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2336 let mut selections = self.local_selections::<Point>(cx);
2337 for selection in &mut selections {
2338 let head = selection.head().to_display_point(&display_map);
2339 let new_head = movement::line_end(&display_map, head);
2340 selection.set_head(new_head.to_point(&display_map));
2341 selection.goal = SelectionGoal::None;
2342 }
2343 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2344 }
2345
2346 pub fn delete_to_end_of_line(&mut self, _: &DeleteToEndOfLine, cx: &mut ViewContext<Self>) {
2347 self.start_transaction(cx);
2348 self.select_to_end_of_line(&SelectToEndOfLine, cx);
2349 self.delete(&Delete, cx);
2350 self.end_transaction(cx);
2351 }
2352
2353 pub fn cut_to_end_of_line(&mut self, _: &CutToEndOfLine, cx: &mut ViewContext<Self>) {
2354 self.start_transaction(cx);
2355 self.select_to_end_of_line(&SelectToEndOfLine, cx);
2356 self.cut(&Cut, cx);
2357 self.end_transaction(cx);
2358 }
2359
2360 pub fn move_to_beginning(&mut self, _: &MoveToBeginning, cx: &mut ViewContext<Self>) {
2361 let selection = Selection {
2362 id: post_inc(&mut self.next_selection_id),
2363 start: 0,
2364 end: 0,
2365 reversed: false,
2366 goal: SelectionGoal::None,
2367 };
2368 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
2369 }
2370
2371 pub fn select_to_beginning(&mut self, _: &SelectToBeginning, cx: &mut ViewContext<Self>) {
2372 let mut selection = self.local_selections::<Point>(cx).last().unwrap().clone();
2373 selection.set_head(Point::zero());
2374 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
2375 }
2376
2377 pub fn move_to_end(&mut self, _: &MoveToEnd, cx: &mut ViewContext<Self>) {
2378 let cursor = self.buffer.read(cx).read(cx).len();
2379 let selection = Selection {
2380 id: post_inc(&mut self.next_selection_id),
2381 start: cursor,
2382 end: cursor,
2383 reversed: false,
2384 goal: SelectionGoal::None,
2385 };
2386 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
2387 }
2388
2389 pub fn select_to_end(&mut self, _: &SelectToEnd, cx: &mut ViewContext<Self>) {
2390 let mut selection = self.local_selections::<usize>(cx).first().unwrap().clone();
2391 selection.set_head(self.buffer.read(cx).read(cx).len());
2392 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
2393 }
2394
2395 pub fn select_all(&mut self, _: &SelectAll, cx: &mut ViewContext<Self>) {
2396 let selection = Selection {
2397 id: post_inc(&mut self.next_selection_id),
2398 start: 0,
2399 end: self.buffer.read(cx).read(cx).len(),
2400 reversed: false,
2401 goal: SelectionGoal::None,
2402 };
2403 self.update_selections(vec![selection], None, cx);
2404 }
2405
2406 pub fn select_line(&mut self, _: &SelectLine, cx: &mut ViewContext<Self>) {
2407 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2408 let mut selections = self.local_selections::<Point>(cx);
2409 let max_point = display_map.buffer_snapshot.max_point();
2410 for selection in &mut selections {
2411 let rows = selection.spanned_rows(true, &display_map);
2412 selection.start = Point::new(rows.start, 0);
2413 selection.end = cmp::min(max_point, Point::new(rows.end, 0));
2414 selection.reversed = false;
2415 }
2416 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2417 }
2418
2419 pub fn split_selection_into_lines(
2420 &mut self,
2421 _: &SplitSelectionIntoLines,
2422 cx: &mut ViewContext<Self>,
2423 ) {
2424 let mut to_unfold = Vec::new();
2425 let mut new_selections = Vec::new();
2426 {
2427 let selections = self.local_selections::<Point>(cx);
2428 let buffer = self.buffer.read(cx).read(cx);
2429 for selection in selections {
2430 for row in selection.start.row..selection.end.row {
2431 let cursor = Point::new(row, buffer.line_len(row));
2432 new_selections.push(Selection {
2433 id: post_inc(&mut self.next_selection_id),
2434 start: cursor,
2435 end: cursor,
2436 reversed: false,
2437 goal: SelectionGoal::None,
2438 });
2439 }
2440 new_selections.push(Selection {
2441 id: selection.id,
2442 start: selection.end,
2443 end: selection.end,
2444 reversed: false,
2445 goal: SelectionGoal::None,
2446 });
2447 to_unfold.push(selection.start..selection.end);
2448 }
2449 }
2450 self.unfold_ranges(to_unfold, cx);
2451 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
2452 }
2453
2454 pub fn add_selection_above(&mut self, _: &AddSelectionAbove, cx: &mut ViewContext<Self>) {
2455 self.add_selection(true, cx);
2456 }
2457
2458 pub fn add_selection_below(&mut self, _: &AddSelectionBelow, cx: &mut ViewContext<Self>) {
2459 self.add_selection(false, cx);
2460 }
2461
2462 fn add_selection(&mut self, above: bool, cx: &mut ViewContext<Self>) {
2463 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2464 let mut selections = self.local_selections::<Point>(cx);
2465 let mut state = self.add_selections_state.take().unwrap_or_else(|| {
2466 let oldest_selection = selections.iter().min_by_key(|s| s.id).unwrap().clone();
2467 let range = oldest_selection.display_range(&display_map).sorted();
2468 let columns = cmp::min(range.start.column(), range.end.column())
2469 ..cmp::max(range.start.column(), range.end.column());
2470
2471 selections.clear();
2472 let mut stack = Vec::new();
2473 for row in range.start.row()..=range.end.row() {
2474 if let Some(selection) = self.build_columnar_selection(
2475 &display_map,
2476 row,
2477 &columns,
2478 oldest_selection.reversed,
2479 ) {
2480 stack.push(selection.id);
2481 selections.push(selection);
2482 }
2483 }
2484
2485 if above {
2486 stack.reverse();
2487 }
2488
2489 AddSelectionsState { above, stack }
2490 });
2491
2492 let last_added_selection = *state.stack.last().unwrap();
2493 let mut new_selections = Vec::new();
2494 if above == state.above {
2495 let end_row = if above {
2496 0
2497 } else {
2498 display_map.max_point().row()
2499 };
2500
2501 'outer: for selection in selections {
2502 if selection.id == last_added_selection {
2503 let range = selection.display_range(&display_map).sorted();
2504 debug_assert_eq!(range.start.row(), range.end.row());
2505 let mut row = range.start.row();
2506 let columns = if let SelectionGoal::ColumnRange { start, end } = selection.goal
2507 {
2508 start..end
2509 } else {
2510 cmp::min(range.start.column(), range.end.column())
2511 ..cmp::max(range.start.column(), range.end.column())
2512 };
2513
2514 while row != end_row {
2515 if above {
2516 row -= 1;
2517 } else {
2518 row += 1;
2519 }
2520
2521 if let Some(new_selection) = self.build_columnar_selection(
2522 &display_map,
2523 row,
2524 &columns,
2525 selection.reversed,
2526 ) {
2527 state.stack.push(new_selection.id);
2528 if above {
2529 new_selections.push(new_selection);
2530 new_selections.push(selection);
2531 } else {
2532 new_selections.push(selection);
2533 new_selections.push(new_selection);
2534 }
2535
2536 continue 'outer;
2537 }
2538 }
2539 }
2540
2541 new_selections.push(selection);
2542 }
2543 } else {
2544 new_selections = selections;
2545 new_selections.retain(|s| s.id != last_added_selection);
2546 state.stack.pop();
2547 }
2548
2549 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
2550 if state.stack.len() > 1 {
2551 self.add_selections_state = Some(state);
2552 }
2553 }
2554
2555 pub fn select_next(&mut self, action: &SelectNext, cx: &mut ViewContext<Self>) {
2556 let replace_newest = action.0;
2557 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2558 let buffer = &display_map.buffer_snapshot;
2559 let mut selections = self.local_selections::<usize>(cx);
2560 if let Some(mut select_next_state) = self.select_next_state.take() {
2561 let query = &select_next_state.query;
2562 if !select_next_state.done {
2563 let first_selection = selections.iter().min_by_key(|s| s.id).unwrap();
2564 let last_selection = selections.iter().max_by_key(|s| s.id).unwrap();
2565 let mut next_selected_range = None;
2566
2567 let bytes_after_last_selection =
2568 buffer.bytes_in_range(last_selection.end..buffer.len());
2569 let bytes_before_first_selection = buffer.bytes_in_range(0..first_selection.start);
2570 let query_matches = query
2571 .stream_find_iter(bytes_after_last_selection)
2572 .map(|result| (last_selection.end, result))
2573 .chain(
2574 query
2575 .stream_find_iter(bytes_before_first_selection)
2576 .map(|result| (0, result)),
2577 );
2578 for (start_offset, query_match) in query_matches {
2579 let query_match = query_match.unwrap(); // can only fail due to I/O
2580 let offset_range =
2581 start_offset + query_match.start()..start_offset + query_match.end();
2582 let display_range = offset_range.start.to_display_point(&display_map)
2583 ..offset_range.end.to_display_point(&display_map);
2584
2585 if !select_next_state.wordwise
2586 || (!movement::is_inside_word(&display_map, display_range.start)
2587 && !movement::is_inside_word(&display_map, display_range.end))
2588 {
2589 next_selected_range = Some(offset_range);
2590 break;
2591 }
2592 }
2593
2594 if let Some(next_selected_range) = next_selected_range {
2595 if replace_newest {
2596 if let Some(newest_id) =
2597 selections.iter().max_by_key(|s| s.id).map(|s| s.id)
2598 {
2599 selections.retain(|s| s.id != newest_id);
2600 }
2601 }
2602 selections.push(Selection {
2603 id: post_inc(&mut self.next_selection_id),
2604 start: next_selected_range.start,
2605 end: next_selected_range.end,
2606 reversed: false,
2607 goal: SelectionGoal::None,
2608 });
2609 selections.sort_unstable_by_key(|s| s.start);
2610 self.update_selections(selections, Some(Autoscroll::Newest), cx);
2611 } else {
2612 select_next_state.done = true;
2613 }
2614 }
2615
2616 self.select_next_state = Some(select_next_state);
2617 } else if selections.len() == 1 {
2618 let selection = selections.last_mut().unwrap();
2619 if selection.start == selection.end {
2620 let word_range = movement::surrounding_word(
2621 &display_map,
2622 selection.start.to_display_point(&display_map),
2623 );
2624 selection.start = word_range.start.to_offset(&display_map, Bias::Left);
2625 selection.end = word_range.end.to_offset(&display_map, Bias::Left);
2626 selection.goal = SelectionGoal::None;
2627 selection.reversed = false;
2628
2629 let query = buffer
2630 .text_for_range(selection.start..selection.end)
2631 .collect::<String>();
2632 let select_state = SelectNextState {
2633 query: AhoCorasick::new_auto_configured(&[query]),
2634 wordwise: true,
2635 done: false,
2636 };
2637 self.update_selections(selections, Some(Autoscroll::Newest), cx);
2638 self.select_next_state = Some(select_state);
2639 } else {
2640 let query = buffer
2641 .text_for_range(selection.start..selection.end)
2642 .collect::<String>();
2643 self.select_next_state = Some(SelectNextState {
2644 query: AhoCorasick::new_auto_configured(&[query]),
2645 wordwise: false,
2646 done: false,
2647 });
2648 self.select_next(action, cx);
2649 }
2650 }
2651 }
2652
2653 pub fn toggle_comments(&mut self, _: &ToggleComments, cx: &mut ViewContext<Self>) {
2654 // Get the line comment prefix. Split its trailing whitespace into a separate string,
2655 // as that portion won't be used for detecting if a line is a comment.
2656 let full_comment_prefix =
2657 if let Some(prefix) = self.language(cx).and_then(|l| l.line_comment_prefix()) {
2658 prefix.to_string()
2659 } else {
2660 return;
2661 };
2662 let comment_prefix = full_comment_prefix.trim_end_matches(' ');
2663 let comment_prefix_whitespace = &full_comment_prefix[comment_prefix.len()..];
2664
2665 self.start_transaction(cx);
2666 let mut selections = self.local_selections::<Point>(cx);
2667 let mut all_selection_lines_are_comments = true;
2668 let mut edit_ranges = Vec::new();
2669 let mut last_toggled_row = None;
2670 self.buffer.update(cx, |buffer, cx| {
2671 for selection in &mut selections {
2672 edit_ranges.clear();
2673 let snapshot = buffer.snapshot(cx);
2674
2675 let end_row =
2676 if selection.end.row > selection.start.row && selection.end.column == 0 {
2677 selection.end.row
2678 } else {
2679 selection.end.row + 1
2680 };
2681
2682 for row in selection.start.row..end_row {
2683 // If multiple selections contain a given row, avoid processing that
2684 // row more than once.
2685 if last_toggled_row == Some(row) {
2686 continue;
2687 } else {
2688 last_toggled_row = Some(row);
2689 }
2690
2691 if snapshot.is_line_blank(row) {
2692 continue;
2693 }
2694
2695 let start = Point::new(row, snapshot.indent_column_for_line(row));
2696 let mut line_bytes = snapshot
2697 .bytes_in_range(start..snapshot.max_point())
2698 .flatten()
2699 .copied();
2700
2701 // If this line currently begins with the line comment prefix, then record
2702 // the range containing the prefix.
2703 if all_selection_lines_are_comments
2704 && line_bytes
2705 .by_ref()
2706 .take(comment_prefix.len())
2707 .eq(comment_prefix.bytes())
2708 {
2709 // Include any whitespace that matches the comment prefix.
2710 let matching_whitespace_len = line_bytes
2711 .zip(comment_prefix_whitespace.bytes())
2712 .take_while(|(a, b)| a == b)
2713 .count() as u32;
2714 let end = Point::new(
2715 row,
2716 start.column + comment_prefix.len() as u32 + matching_whitespace_len,
2717 );
2718 edit_ranges.push(start..end);
2719 }
2720 // If this line does not begin with the line comment prefix, then record
2721 // the position where the prefix should be inserted.
2722 else {
2723 all_selection_lines_are_comments = false;
2724 edit_ranges.push(start..start);
2725 }
2726 }
2727
2728 if !edit_ranges.is_empty() {
2729 if all_selection_lines_are_comments {
2730 buffer.edit(edit_ranges.iter().cloned(), "", cx);
2731 } else {
2732 let min_column = edit_ranges.iter().map(|r| r.start.column).min().unwrap();
2733 let edit_ranges = edit_ranges.iter().map(|range| {
2734 let position = Point::new(range.start.row, min_column);
2735 position..position
2736 });
2737 buffer.edit(edit_ranges, &full_comment_prefix, cx);
2738 }
2739 }
2740 }
2741 });
2742
2743 self.update_selections(
2744 self.local_selections::<usize>(cx),
2745 Some(Autoscroll::Fit),
2746 cx,
2747 );
2748 self.end_transaction(cx);
2749 }
2750
2751 pub fn select_larger_syntax_node(
2752 &mut self,
2753 _: &SelectLargerSyntaxNode,
2754 cx: &mut ViewContext<Self>,
2755 ) {
2756 let old_selections = self.local_selections::<usize>(cx).into_boxed_slice();
2757 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2758 let buffer = self.buffer.read(cx).snapshot(cx);
2759
2760 let mut stack = mem::take(&mut self.select_larger_syntax_node_stack);
2761 let mut selected_larger_node = false;
2762 let mut new_selections = old_selections
2763 .iter()
2764 .map(|selection| {
2765 let old_range = selection.start..selection.end;
2766 let mut new_range = old_range.clone();
2767 while let Some(containing_range) =
2768 buffer.range_for_syntax_ancestor(new_range.clone())
2769 {
2770 new_range = containing_range;
2771 if !display_map.intersects_fold(new_range.start)
2772 && !display_map.intersects_fold(new_range.end)
2773 {
2774 break;
2775 }
2776 }
2777
2778 selected_larger_node |= new_range != old_range;
2779 Selection {
2780 id: selection.id,
2781 start: new_range.start,
2782 end: new_range.end,
2783 goal: SelectionGoal::None,
2784 reversed: selection.reversed,
2785 }
2786 })
2787 .collect::<Vec<_>>();
2788
2789 if selected_larger_node {
2790 stack.push(old_selections);
2791 new_selections.sort_unstable_by_key(|selection| selection.start);
2792 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
2793 }
2794 self.select_larger_syntax_node_stack = stack;
2795 }
2796
2797 pub fn select_smaller_syntax_node(
2798 &mut self,
2799 _: &SelectSmallerSyntaxNode,
2800 cx: &mut ViewContext<Self>,
2801 ) {
2802 let mut stack = mem::take(&mut self.select_larger_syntax_node_stack);
2803 if let Some(selections) = stack.pop() {
2804 self.update_selections(selections.to_vec(), Some(Autoscroll::Fit), cx);
2805 }
2806 self.select_larger_syntax_node_stack = stack;
2807 }
2808
2809 pub fn move_to_enclosing_bracket(
2810 &mut self,
2811 _: &MoveToEnclosingBracket,
2812 cx: &mut ViewContext<Self>,
2813 ) {
2814 let mut selections = self.local_selections::<usize>(cx);
2815 let buffer = self.buffer.read(cx).snapshot(cx);
2816 for selection in &mut selections {
2817 if let Some((open_range, close_range)) =
2818 buffer.enclosing_bracket_ranges(selection.start..selection.end)
2819 {
2820 let close_range = close_range.to_inclusive();
2821 let destination = if close_range.contains(&selection.start)
2822 && close_range.contains(&selection.end)
2823 {
2824 open_range.end
2825 } else {
2826 *close_range.start()
2827 };
2828 selection.start = destination;
2829 selection.end = destination;
2830 }
2831 }
2832
2833 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2834 }
2835
2836 pub fn show_next_diagnostic(&mut self, _: &ShowNextDiagnostic, cx: &mut ViewContext<Self>) {
2837 let buffer = self.buffer.read(cx).snapshot(cx);
2838 let selection = self.newest_selection::<usize>(&buffer);
2839 let active_primary_range = self.active_diagnostics.as_ref().map(|active_diagnostics| {
2840 active_diagnostics
2841 .primary_range
2842 .to_offset(&buffer)
2843 .to_inclusive()
2844 });
2845 let mut search_start = if let Some(active_primary_range) = active_primary_range.as_ref() {
2846 if active_primary_range.contains(&selection.head()) {
2847 *active_primary_range.end()
2848 } else {
2849 selection.head()
2850 }
2851 } else {
2852 selection.head()
2853 };
2854
2855 loop {
2856 let next_group = buffer
2857 .diagnostics_in_range::<_, usize>(search_start..buffer.len())
2858 .find_map(|(provider_name, entry)| {
2859 if entry.diagnostic.is_primary
2860 && !entry.range.is_empty()
2861 && Some(entry.range.end) != active_primary_range.as_ref().map(|r| *r.end())
2862 {
2863 Some((provider_name, entry.range, entry.diagnostic.group_id))
2864 } else {
2865 None
2866 }
2867 });
2868
2869 if let Some((provider_name, primary_range, group_id)) = next_group {
2870 self.activate_diagnostics(provider_name, group_id, cx);
2871 self.update_selections(
2872 vec![Selection {
2873 id: selection.id,
2874 start: primary_range.start,
2875 end: primary_range.start,
2876 reversed: false,
2877 goal: SelectionGoal::None,
2878 }],
2879 Some(Autoscroll::Center),
2880 cx,
2881 );
2882 break;
2883 } else if search_start == 0 {
2884 break;
2885 } else {
2886 // Cycle around to the start of the buffer.
2887 search_start = 0;
2888 }
2889 }
2890 }
2891
2892 fn refresh_active_diagnostics(&mut self, cx: &mut ViewContext<Editor>) {
2893 if let Some(active_diagnostics) = self.active_diagnostics.as_mut() {
2894 let buffer = self.buffer.read(cx).snapshot(cx);
2895 let primary_range_start = active_diagnostics.primary_range.start.to_offset(&buffer);
2896 let is_valid = buffer
2897 .diagnostics_in_range::<_, usize>(active_diagnostics.primary_range.clone())
2898 .any(|(_, entry)| {
2899 entry.diagnostic.is_primary
2900 && !entry.range.is_empty()
2901 && entry.range.start == primary_range_start
2902 && entry.diagnostic.message == active_diagnostics.primary_message
2903 });
2904
2905 if is_valid != active_diagnostics.is_valid {
2906 active_diagnostics.is_valid = is_valid;
2907 let mut new_styles = HashMap::default();
2908 for (block_id, diagnostic) in &active_diagnostics.blocks {
2909 new_styles.insert(
2910 *block_id,
2911 diagnostic_block_renderer(
2912 diagnostic.clone(),
2913 is_valid,
2914 self.build_settings.clone(),
2915 ),
2916 );
2917 }
2918 self.display_map
2919 .update(cx, |display_map, _| display_map.replace_blocks(new_styles));
2920 }
2921 }
2922 }
2923
2924 fn activate_diagnostics(
2925 &mut self,
2926 provider_name: &str,
2927 group_id: usize,
2928 cx: &mut ViewContext<Self>,
2929 ) {
2930 self.dismiss_diagnostics(cx);
2931 self.active_diagnostics = self.display_map.update(cx, |display_map, cx| {
2932 let buffer = self.buffer.read(cx).snapshot(cx);
2933
2934 let mut primary_range = None;
2935 let mut primary_message = None;
2936 let mut group_end = Point::zero();
2937 let diagnostic_group = buffer
2938 .diagnostic_group::<Point>(provider_name, group_id)
2939 .map(|entry| {
2940 if entry.range.end > group_end {
2941 group_end = entry.range.end;
2942 }
2943 if entry.diagnostic.is_primary {
2944 primary_range = Some(entry.range.clone());
2945 primary_message = Some(entry.diagnostic.message.clone());
2946 }
2947 entry
2948 })
2949 .collect::<Vec<_>>();
2950 let primary_range = primary_range.unwrap();
2951 let primary_message = primary_message.unwrap();
2952 let primary_range =
2953 buffer.anchor_after(primary_range.start)..buffer.anchor_before(primary_range.end);
2954
2955 let blocks = display_map
2956 .insert_blocks(
2957 diagnostic_group.iter().map(|entry| {
2958 let build_settings = self.build_settings.clone();
2959 let diagnostic = entry.diagnostic.clone();
2960 let message_height = diagnostic.message.lines().count() as u8;
2961
2962 BlockProperties {
2963 position: entry.range.start,
2964 height: message_height,
2965 render: diagnostic_block_renderer(diagnostic, true, build_settings),
2966 disposition: BlockDisposition::Below,
2967 }
2968 }),
2969 cx,
2970 )
2971 .into_iter()
2972 .zip(diagnostic_group.into_iter().map(|entry| entry.diagnostic))
2973 .collect();
2974
2975 Some(ActiveDiagnosticGroup {
2976 primary_range,
2977 primary_message,
2978 blocks,
2979 is_valid: true,
2980 })
2981 });
2982 }
2983
2984 fn dismiss_diagnostics(&mut self, cx: &mut ViewContext<Self>) {
2985 if let Some(active_diagnostic_group) = self.active_diagnostics.take() {
2986 self.display_map.update(cx, |display_map, cx| {
2987 display_map.remove_blocks(active_diagnostic_group.blocks.into_keys().collect(), cx);
2988 });
2989 cx.notify();
2990 }
2991 }
2992
2993 fn build_columnar_selection(
2994 &mut self,
2995 display_map: &DisplaySnapshot,
2996 row: u32,
2997 columns: &Range<u32>,
2998 reversed: bool,
2999 ) -> Option<Selection<Point>> {
3000 let is_empty = columns.start == columns.end;
3001 let line_len = display_map.line_len(row);
3002 if columns.start < line_len || (is_empty && columns.start == line_len) {
3003 let start = DisplayPoint::new(row, columns.start);
3004 let end = DisplayPoint::new(row, cmp::min(columns.end, line_len));
3005 Some(Selection {
3006 id: post_inc(&mut self.next_selection_id),
3007 start: start.to_point(display_map),
3008 end: end.to_point(display_map),
3009 reversed,
3010 goal: SelectionGoal::ColumnRange {
3011 start: columns.start,
3012 end: columns.end,
3013 },
3014 })
3015 } else {
3016 None
3017 }
3018 }
3019
3020 pub fn visible_selections<'a>(
3021 &'a self,
3022 display_rows: Range<u32>,
3023 cx: &'a mut MutableAppContext,
3024 ) -> HashMap<ReplicaId, Vec<Selection<DisplayPoint>>> {
3025 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3026 let buffer = &display_map.buffer_snapshot;
3027
3028 let start = if display_rows.start == 0 {
3029 Anchor::min()
3030 } else {
3031 buffer.anchor_before(
3032 DisplayPoint::new(display_rows.start, 0).to_offset(&display_map, Bias::Left),
3033 )
3034 };
3035 let end = if display_rows.end > display_map.max_point().row() {
3036 Anchor::max()
3037 } else {
3038 buffer.anchor_before(
3039 DisplayPoint::new(display_rows.end, 0).to_offset(&display_map, Bias::Right),
3040 )
3041 };
3042
3043 let start_ix = match self
3044 .selections
3045 .binary_search_by(|probe| probe.end.cmp(&start, &buffer).unwrap())
3046 {
3047 Ok(ix) | Err(ix) => ix,
3048 };
3049 let end_ix = match self
3050 .selections
3051 .binary_search_by(|probe| probe.start.cmp(&end, &buffer).unwrap())
3052 {
3053 Ok(ix) => ix + 1,
3054 Err(ix) => ix,
3055 };
3056
3057 fn display_selection(
3058 selection: &Selection<Anchor>,
3059 display_map: &DisplaySnapshot,
3060 ) -> Selection<DisplayPoint> {
3061 Selection {
3062 id: selection.id,
3063 start: selection.start.to_display_point(&display_map),
3064 end: selection.end.to_display_point(&display_map),
3065 reversed: selection.reversed,
3066 goal: selection.goal,
3067 }
3068 }
3069
3070 let mut result = HashMap::default();
3071
3072 result.insert(
3073 self.replica_id(cx),
3074 self.selections[start_ix..end_ix]
3075 .iter()
3076 .chain(
3077 self.pending_selection
3078 .as_ref()
3079 .map(|pending| &pending.selection),
3080 )
3081 .map(|s| display_selection(s, &display_map))
3082 .collect(),
3083 );
3084
3085 for (replica_id, selection) in display_map
3086 .buffer_snapshot
3087 .remote_selections_in_range(&(start..end))
3088 {
3089 result
3090 .entry(replica_id)
3091 .or_insert(Vec::new())
3092 .push(display_selection(&selection, &display_map));
3093 }
3094
3095 result
3096 }
3097
3098 pub fn local_selections<'a, D>(&self, cx: &'a AppContext) -> Vec<Selection<D>>
3099 where
3100 D: 'a + TextDimension + Ord + Sub<D, Output = D>,
3101 {
3102 let buffer = self.buffer.read(cx).snapshot(cx);
3103 let mut selections = self
3104 .resolve_selections::<D, _>(self.selections.iter(), &buffer)
3105 .peekable();
3106
3107 let mut pending_selection = self.pending_selection::<D>(&buffer);
3108
3109 iter::from_fn(move || {
3110 if let Some(pending) = pending_selection.as_mut() {
3111 while let Some(next_selection) = selections.peek() {
3112 if pending.start <= next_selection.end && pending.end >= next_selection.start {
3113 let next_selection = selections.next().unwrap();
3114 if next_selection.start < pending.start {
3115 pending.start = next_selection.start;
3116 }
3117 if next_selection.end > pending.end {
3118 pending.end = next_selection.end;
3119 }
3120 } else if next_selection.end < pending.start {
3121 return selections.next();
3122 } else {
3123 break;
3124 }
3125 }
3126
3127 pending_selection.take()
3128 } else {
3129 selections.next()
3130 }
3131 })
3132 .collect()
3133 }
3134
3135 pub fn local_anchor_selections(&self) -> &Arc<[Selection<Anchor>]> {
3136 &self.selections
3137 }
3138
3139 fn resolve_selections<'a, D, I>(
3140 &self,
3141 selections: I,
3142 snapshot: &MultiBufferSnapshot,
3143 ) -> impl 'a + Iterator<Item = Selection<D>>
3144 where
3145 D: TextDimension + Ord + Sub<D, Output = D>,
3146 I: 'a + IntoIterator<Item = &'a Selection<Anchor>>,
3147 {
3148 let (to_summarize, selections) = selections.into_iter().tee();
3149 let mut summaries = snapshot
3150 .summaries_for_anchors::<D, _>(to_summarize.flat_map(|s| [&s.start, &s.end]))
3151 .into_iter();
3152 selections.map(move |s| Selection {
3153 id: s.id,
3154 start: summaries.next().unwrap(),
3155 end: summaries.next().unwrap(),
3156 reversed: s.reversed,
3157 goal: s.goal,
3158 })
3159 }
3160
3161 fn pending_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
3162 &self,
3163 snapshot: &MultiBufferSnapshot,
3164 ) -> Option<Selection<D>> {
3165 self.pending_selection
3166 .as_ref()
3167 .map(|pending| self.resolve_selection(&pending.selection, &snapshot))
3168 }
3169
3170 fn resolve_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
3171 &self,
3172 selection: &Selection<Anchor>,
3173 buffer: &MultiBufferSnapshot,
3174 ) -> Selection<D> {
3175 Selection {
3176 id: selection.id,
3177 start: selection.start.summary::<D>(&buffer),
3178 end: selection.end.summary::<D>(&buffer),
3179 reversed: selection.reversed,
3180 goal: selection.goal,
3181 }
3182 }
3183
3184 fn selection_count<'a>(&self) -> usize {
3185 let mut count = self.selections.len();
3186 if self.pending_selection.is_some() {
3187 count += 1;
3188 }
3189 count
3190 }
3191
3192 pub fn oldest_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
3193 &self,
3194 snapshot: &MultiBufferSnapshot,
3195 ) -> Selection<D> {
3196 self.selections
3197 .iter()
3198 .min_by_key(|s| s.id)
3199 .map(|selection| self.resolve_selection(selection, snapshot))
3200 .or_else(|| self.pending_selection(snapshot))
3201 .unwrap()
3202 }
3203
3204 pub fn newest_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
3205 &self,
3206 snapshot: &MultiBufferSnapshot,
3207 ) -> Selection<D> {
3208 self.pending_selection(snapshot)
3209 .or_else(|| {
3210 self.selections
3211 .iter()
3212 .max_by_key(|s| s.id)
3213 .map(|selection| self.resolve_selection(selection, snapshot))
3214 })
3215 .unwrap()
3216 }
3217
3218 pub fn update_selections<T>(
3219 &mut self,
3220 mut selections: Vec<Selection<T>>,
3221 autoscroll: Option<Autoscroll>,
3222 cx: &mut ViewContext<Self>,
3223 ) where
3224 T: ToOffset + ToPoint + Ord + std::marker::Copy + std::fmt::Debug,
3225 {
3226 // Merge overlapping selections.
3227 let buffer = self.buffer.read(cx).snapshot(cx);
3228 let mut i = 1;
3229 while i < selections.len() {
3230 if selections[i - 1].end >= selections[i].start {
3231 let removed = selections.remove(i);
3232 if removed.start < selections[i - 1].start {
3233 selections[i - 1].start = removed.start;
3234 }
3235 if removed.end > selections[i - 1].end {
3236 selections[i - 1].end = removed.end;
3237 }
3238 } else {
3239 i += 1;
3240 }
3241 }
3242
3243 self.pending_selection = None;
3244 self.add_selections_state = None;
3245 self.select_next_state = None;
3246 self.select_larger_syntax_node_stack.clear();
3247 while let Some(autoclose_pair) = self.autoclose_stack.last() {
3248 let all_selections_inside_autoclose_ranges =
3249 if selections.len() == autoclose_pair.ranges.len() {
3250 selections
3251 .iter()
3252 .zip(autoclose_pair.ranges.iter().map(|r| r.to_point(&buffer)))
3253 .all(|(selection, autoclose_range)| {
3254 let head = selection.head().to_point(&buffer);
3255 autoclose_range.start <= head && autoclose_range.end >= head
3256 })
3257 } else {
3258 false
3259 };
3260
3261 if all_selections_inside_autoclose_ranges {
3262 break;
3263 } else {
3264 self.autoclose_stack.pop();
3265 }
3266 }
3267
3268 if let Some(autoscroll) = autoscroll {
3269 self.request_autoscroll(autoscroll, cx);
3270 }
3271 self.pause_cursor_blinking(cx);
3272
3273 self.set_selections(
3274 Arc::from_iter(selections.into_iter().map(|selection| {
3275 let end_bias = if selection.end > selection.start {
3276 Bias::Left
3277 } else {
3278 Bias::Right
3279 };
3280 Selection {
3281 id: selection.id,
3282 start: buffer.anchor_after(selection.start),
3283 end: buffer.anchor_at(selection.end, end_bias),
3284 reversed: selection.reversed,
3285 goal: selection.goal,
3286 }
3287 })),
3288 cx,
3289 );
3290 }
3291
3292 fn set_selections(&mut self, selections: Arc<[Selection<Anchor>]>, cx: &mut ViewContext<Self>) {
3293 self.selections = selections;
3294 self.buffer.update(cx, |buffer, cx| {
3295 buffer.set_active_selections(&self.selections, cx)
3296 });
3297 }
3298
3299 fn request_autoscroll(&mut self, autoscroll: Autoscroll, cx: &mut ViewContext<Self>) {
3300 self.autoscroll_request = Some(autoscroll);
3301 cx.notify();
3302 }
3303
3304 fn start_transaction(&mut self, cx: &mut ViewContext<Self>) {
3305 self.start_transaction_at(Instant::now(), cx);
3306 }
3307
3308 fn start_transaction_at(&mut self, now: Instant, cx: &mut ViewContext<Self>) {
3309 self.end_selection(cx);
3310 if let Some(tx_id) = self
3311 .buffer
3312 .update(cx, |buffer, cx| buffer.start_transaction_at(now, cx))
3313 {
3314 self.selection_history
3315 .insert(tx_id, (self.selections.clone(), None));
3316 }
3317 }
3318
3319 fn end_transaction(&mut self, cx: &mut ViewContext<Self>) {
3320 self.end_transaction_at(Instant::now(), cx);
3321 }
3322
3323 fn end_transaction_at(&mut self, now: Instant, cx: &mut ViewContext<Self>) {
3324 if let Some(tx_id) = self
3325 .buffer
3326 .update(cx, |buffer, cx| buffer.end_transaction_at(now, cx))
3327 {
3328 self.selection_history.get_mut(&tx_id).unwrap().1 = Some(self.selections.clone());
3329 }
3330 }
3331
3332 pub fn page_up(&mut self, _: &PageUp, _: &mut ViewContext<Self>) {
3333 log::info!("Editor::page_up");
3334 }
3335
3336 pub fn page_down(&mut self, _: &PageDown, _: &mut ViewContext<Self>) {
3337 log::info!("Editor::page_down");
3338 }
3339
3340 pub fn fold(&mut self, _: &Fold, cx: &mut ViewContext<Self>) {
3341 let mut fold_ranges = Vec::new();
3342
3343 let selections = self.local_selections::<Point>(cx);
3344 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3345 for selection in selections {
3346 let range = selection.display_range(&display_map).sorted();
3347 let buffer_start_row = range.start.to_point(&display_map).row;
3348
3349 for row in (0..=range.end.row()).rev() {
3350 if self.is_line_foldable(&display_map, row) && !display_map.is_line_folded(row) {
3351 let fold_range = self.foldable_range_for_line(&display_map, row);
3352 if fold_range.end.row >= buffer_start_row {
3353 fold_ranges.push(fold_range);
3354 if row <= range.start.row() {
3355 break;
3356 }
3357 }
3358 }
3359 }
3360 }
3361
3362 self.fold_ranges(fold_ranges, cx);
3363 }
3364
3365 pub fn unfold(&mut self, _: &Unfold, cx: &mut ViewContext<Self>) {
3366 let selections = self.local_selections::<Point>(cx);
3367 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3368 let buffer = &display_map.buffer_snapshot;
3369 let ranges = selections
3370 .iter()
3371 .map(|s| {
3372 let range = s.display_range(&display_map).sorted();
3373 let mut start = range.start.to_point(&display_map);
3374 let mut end = range.end.to_point(&display_map);
3375 start.column = 0;
3376 end.column = buffer.line_len(end.row);
3377 start..end
3378 })
3379 .collect::<Vec<_>>();
3380 self.unfold_ranges(ranges, cx);
3381 }
3382
3383 fn is_line_foldable(&self, display_map: &DisplaySnapshot, display_row: u32) -> bool {
3384 let max_point = display_map.max_point();
3385 if display_row >= max_point.row() {
3386 false
3387 } else {
3388 let (start_indent, is_blank) = display_map.line_indent(display_row);
3389 if is_blank {
3390 false
3391 } else {
3392 for display_row in display_row + 1..=max_point.row() {
3393 let (indent, is_blank) = display_map.line_indent(display_row);
3394 if !is_blank {
3395 return indent > start_indent;
3396 }
3397 }
3398 false
3399 }
3400 }
3401 }
3402
3403 fn foldable_range_for_line(
3404 &self,
3405 display_map: &DisplaySnapshot,
3406 start_row: u32,
3407 ) -> Range<Point> {
3408 let max_point = display_map.max_point();
3409
3410 let (start_indent, _) = display_map.line_indent(start_row);
3411 let start = DisplayPoint::new(start_row, display_map.line_len(start_row));
3412 let mut end = None;
3413 for row in start_row + 1..=max_point.row() {
3414 let (indent, is_blank) = display_map.line_indent(row);
3415 if !is_blank && indent <= start_indent {
3416 end = Some(DisplayPoint::new(row - 1, display_map.line_len(row - 1)));
3417 break;
3418 }
3419 }
3420
3421 let end = end.unwrap_or(max_point);
3422 return start.to_point(display_map)..end.to_point(display_map);
3423 }
3424
3425 pub fn fold_selected_ranges(&mut self, _: &FoldSelectedRanges, cx: &mut ViewContext<Self>) {
3426 let selections = self.local_selections::<Point>(cx);
3427 let ranges = selections.into_iter().map(|s| s.start..s.end);
3428 self.fold_ranges(ranges, cx);
3429 }
3430
3431 fn fold_ranges<T: ToOffset>(
3432 &mut self,
3433 ranges: impl IntoIterator<Item = Range<T>>,
3434 cx: &mut ViewContext<Self>,
3435 ) {
3436 let mut ranges = ranges.into_iter().peekable();
3437 if ranges.peek().is_some() {
3438 self.display_map.update(cx, |map, cx| map.fold(ranges, cx));
3439 self.request_autoscroll(Autoscroll::Fit, cx);
3440 cx.notify();
3441 }
3442 }
3443
3444 fn unfold_ranges<T: ToOffset>(&mut self, ranges: Vec<Range<T>>, cx: &mut ViewContext<Self>) {
3445 if !ranges.is_empty() {
3446 self.display_map
3447 .update(cx, |map, cx| map.unfold(ranges, cx));
3448 self.request_autoscroll(Autoscroll::Fit, cx);
3449 cx.notify();
3450 }
3451 }
3452
3453 pub fn insert_blocks<P>(
3454 &mut self,
3455 blocks: impl IntoIterator<Item = BlockProperties<P>>,
3456 cx: &mut ViewContext<Self>,
3457 ) -> Vec<BlockId>
3458 where
3459 P: ToOffset + Clone,
3460 {
3461 let blocks = self
3462 .display_map
3463 .update(cx, |display_map, cx| display_map.insert_blocks(blocks, cx));
3464 self.request_autoscroll(Autoscroll::Fit, cx);
3465 blocks
3466 }
3467
3468 pub fn replace_blocks(
3469 &mut self,
3470 blocks: HashMap<BlockId, RenderBlock>,
3471 cx: &mut ViewContext<Self>,
3472 ) {
3473 self.display_map
3474 .update(cx, |display_map, _| display_map.replace_blocks(blocks));
3475 self.request_autoscroll(Autoscroll::Fit, cx);
3476 }
3477
3478 pub fn remove_blocks(&mut self, block_ids: HashSet<BlockId>, cx: &mut ViewContext<Self>) {
3479 self.display_map.update(cx, |display_map, cx| {
3480 display_map.remove_blocks(block_ids, cx)
3481 });
3482 }
3483
3484 pub fn longest_row(&self, cx: &mut MutableAppContext) -> u32 {
3485 self.display_map
3486 .update(cx, |map, cx| map.snapshot(cx))
3487 .longest_row()
3488 }
3489
3490 pub fn max_point(&self, cx: &mut MutableAppContext) -> DisplayPoint {
3491 self.display_map
3492 .update(cx, |map, cx| map.snapshot(cx))
3493 .max_point()
3494 }
3495
3496 pub fn text(&self, cx: &AppContext) -> String {
3497 self.buffer.read(cx).read(cx).text()
3498 }
3499
3500 pub fn display_text(&self, cx: &mut MutableAppContext) -> String {
3501 self.display_map
3502 .update(cx, |map, cx| map.snapshot(cx))
3503 .text()
3504 }
3505
3506 pub fn set_wrap_width(&self, width: Option<f32>, cx: &mut MutableAppContext) -> bool {
3507 self.display_map
3508 .update(cx, |map, cx| map.set_wrap_width(width, cx))
3509 }
3510
3511 pub fn set_highlighted_row(&mut self, row: Option<u32>) {
3512 self.highlighted_row = row;
3513 }
3514
3515 pub fn highlighted_row(&mut self) -> Option<u32> {
3516 self.highlighted_row
3517 }
3518
3519 fn next_blink_epoch(&mut self) -> usize {
3520 self.blink_epoch += 1;
3521 self.blink_epoch
3522 }
3523
3524 fn pause_cursor_blinking(&mut self, cx: &mut ViewContext<Self>) {
3525 self.show_local_cursors = true;
3526 cx.notify();
3527
3528 let epoch = self.next_blink_epoch();
3529 cx.spawn(|this, mut cx| {
3530 let this = this.downgrade();
3531 async move {
3532 Timer::after(CURSOR_BLINK_INTERVAL).await;
3533 if let Some(this) = cx.read(|cx| this.upgrade(cx)) {
3534 this.update(&mut cx, |this, cx| this.resume_cursor_blinking(epoch, cx))
3535 }
3536 }
3537 })
3538 .detach();
3539 }
3540
3541 fn resume_cursor_blinking(&mut self, epoch: usize, cx: &mut ViewContext<Self>) {
3542 if epoch == self.blink_epoch {
3543 self.blinking_paused = false;
3544 self.blink_cursors(epoch, cx);
3545 }
3546 }
3547
3548 fn blink_cursors(&mut self, epoch: usize, cx: &mut ViewContext<Self>) {
3549 if epoch == self.blink_epoch && self.focused && !self.blinking_paused {
3550 self.show_local_cursors = !self.show_local_cursors;
3551 cx.notify();
3552
3553 let epoch = self.next_blink_epoch();
3554 cx.spawn(|this, mut cx| {
3555 let this = this.downgrade();
3556 async move {
3557 Timer::after(CURSOR_BLINK_INTERVAL).await;
3558 if let Some(this) = cx.read(|cx| this.upgrade(cx)) {
3559 this.update(&mut cx, |this, cx| this.blink_cursors(epoch, cx));
3560 }
3561 }
3562 })
3563 .detach();
3564 }
3565 }
3566
3567 pub fn show_local_cursors(&self) -> bool {
3568 self.show_local_cursors
3569 }
3570
3571 fn on_buffer_changed(&mut self, _: ModelHandle<MultiBuffer>, cx: &mut ViewContext<Self>) {
3572 self.refresh_active_diagnostics(cx);
3573 cx.notify();
3574 }
3575
3576 fn on_buffer_event(
3577 &mut self,
3578 _: ModelHandle<MultiBuffer>,
3579 event: &language::Event,
3580 cx: &mut ViewContext<Self>,
3581 ) {
3582 match event {
3583 language::Event::Edited => cx.emit(Event::Edited),
3584 language::Event::Dirtied => cx.emit(Event::Dirtied),
3585 language::Event::Saved => cx.emit(Event::Saved),
3586 language::Event::FileHandleChanged => cx.emit(Event::FileHandleChanged),
3587 language::Event::Reloaded => cx.emit(Event::FileHandleChanged),
3588 language::Event::Closed => cx.emit(Event::Closed),
3589 _ => {}
3590 }
3591 }
3592
3593 fn on_display_map_changed(&mut self, _: ModelHandle<DisplayMap>, cx: &mut ViewContext<Self>) {
3594 cx.notify();
3595 }
3596}
3597
3598impl EditorSnapshot {
3599 pub fn is_focused(&self) -> bool {
3600 self.is_focused
3601 }
3602
3603 pub fn placeholder_text(&self) -> Option<&Arc<str>> {
3604 self.placeholder_text.as_ref()
3605 }
3606
3607 pub fn scroll_position(&self) -> Vector2F {
3608 compute_scroll_position(
3609 &self.display_snapshot,
3610 self.scroll_position,
3611 &self.scroll_top_anchor,
3612 )
3613 }
3614}
3615
3616impl Deref for EditorSnapshot {
3617 type Target = DisplaySnapshot;
3618
3619 fn deref(&self) -> &Self::Target {
3620 &self.display_snapshot
3621 }
3622}
3623
3624impl EditorSettings {
3625 #[cfg(any(test, feature = "test-support"))]
3626 pub fn test(cx: &AppContext) -> Self {
3627 Self {
3628 tab_size: 4,
3629 soft_wrap: SoftWrap::None,
3630 style: {
3631 let font_cache: &gpui::FontCache = cx.font_cache();
3632 let font_family_name = Arc::from("Monaco");
3633 let font_properties = Default::default();
3634 let font_family_id = font_cache.load_family(&[&font_family_name]).unwrap();
3635 let font_id = font_cache
3636 .select_font(font_family_id, &font_properties)
3637 .unwrap();
3638 EditorStyle {
3639 text: gpui::fonts::TextStyle {
3640 font_family_name,
3641 font_family_id,
3642 font_id,
3643 font_size: 14.,
3644 color: gpui::color::Color::from_u32(0xff0000ff),
3645 font_properties,
3646 underline: None,
3647 },
3648 placeholder_text: None,
3649 background: Default::default(),
3650 gutter_background: Default::default(),
3651 active_line_background: Default::default(),
3652 highlighted_line_background: Default::default(),
3653 line_number: Default::default(),
3654 line_number_active: Default::default(),
3655 selection: Default::default(),
3656 guest_selections: Default::default(),
3657 syntax: Default::default(),
3658 error_diagnostic: Default::default(),
3659 invalid_error_diagnostic: Default::default(),
3660 warning_diagnostic: Default::default(),
3661 invalid_warning_diagnostic: Default::default(),
3662 information_diagnostic: Default::default(),
3663 invalid_information_diagnostic: Default::default(),
3664 hint_diagnostic: Default::default(),
3665 invalid_hint_diagnostic: Default::default(),
3666 }
3667 },
3668 }
3669 }
3670}
3671
3672fn compute_scroll_position(
3673 snapshot: &DisplaySnapshot,
3674 mut scroll_position: Vector2F,
3675 scroll_top_anchor: &Anchor,
3676) -> Vector2F {
3677 let scroll_top = scroll_top_anchor.to_display_point(snapshot).row() as f32;
3678 scroll_position.set_y(scroll_top + scroll_position.y());
3679 scroll_position
3680}
3681
3682#[derive(Copy, Clone)]
3683pub enum Event {
3684 Activate,
3685 Edited,
3686 Blurred,
3687 Dirtied,
3688 Saved,
3689 FileHandleChanged,
3690 Closed,
3691}
3692
3693impl Entity for Editor {
3694 type Event = Event;
3695}
3696
3697impl View for Editor {
3698 fn render(&mut self, cx: &mut RenderContext<Self>) -> ElementBox {
3699 let settings = (self.build_settings)(cx);
3700 self.display_map.update(cx, |map, cx| {
3701 map.set_font(
3702 settings.style.text.font_id,
3703 settings.style.text.font_size,
3704 cx,
3705 )
3706 });
3707 EditorElement::new(self.handle.clone(), settings).boxed()
3708 }
3709
3710 fn ui_name() -> &'static str {
3711 "Editor"
3712 }
3713
3714 fn on_focus(&mut self, cx: &mut ViewContext<Self>) {
3715 self.focused = true;
3716 self.blink_cursors(self.blink_epoch, cx);
3717 self.buffer.update(cx, |buffer, cx| {
3718 buffer.set_active_selections(&self.selections, cx)
3719 });
3720 }
3721
3722 fn on_blur(&mut self, cx: &mut ViewContext<Self>) {
3723 self.focused = false;
3724 self.show_local_cursors = false;
3725 self.buffer
3726 .update(cx, |buffer, cx| buffer.remove_active_selections(cx));
3727 cx.emit(Event::Blurred);
3728 cx.notify();
3729 }
3730
3731 fn keymap_context(&self, _: &AppContext) -> gpui::keymap::Context {
3732 let mut cx = Self::default_keymap_context();
3733 let mode = match self.mode {
3734 EditorMode::SingleLine => "single_line",
3735 EditorMode::AutoHeight { .. } => "auto_height",
3736 EditorMode::Full => "full",
3737 };
3738 cx.map.insert("mode".into(), mode.into());
3739 cx
3740 }
3741}
3742
3743impl<T: ToPoint + ToOffset> SelectionExt for Selection<T> {
3744 fn point_range(&self, buffer: &MultiBufferSnapshot) -> Range<Point> {
3745 let start = self.start.to_point(buffer);
3746 let end = self.end.to_point(buffer);
3747 if self.reversed {
3748 end..start
3749 } else {
3750 start..end
3751 }
3752 }
3753
3754 fn offset_range(&self, buffer: &MultiBufferSnapshot) -> Range<usize> {
3755 let start = self.start.to_offset(buffer);
3756 let end = self.end.to_offset(buffer);
3757 if self.reversed {
3758 end..start
3759 } else {
3760 start..end
3761 }
3762 }
3763
3764 fn display_range(&self, map: &DisplaySnapshot) -> Range<DisplayPoint> {
3765 let start = self
3766 .start
3767 .to_point(&map.buffer_snapshot)
3768 .to_display_point(map);
3769 let end = self
3770 .end
3771 .to_point(&map.buffer_snapshot)
3772 .to_display_point(map);
3773 if self.reversed {
3774 end..start
3775 } else {
3776 start..end
3777 }
3778 }
3779
3780 fn spanned_rows(
3781 &self,
3782 include_end_if_at_line_start: bool,
3783 map: &DisplaySnapshot,
3784 ) -> Range<u32> {
3785 let start = self.start.to_point(&map.buffer_snapshot);
3786 let mut end = self.end.to_point(&map.buffer_snapshot);
3787 if !include_end_if_at_line_start
3788 && end.row != map.buffer_snapshot.max_point().row
3789 && start.row != end.row
3790 && end.column == 0
3791 {
3792 end.row -= 1;
3793 }
3794
3795 let buffer_start = map.prev_line_boundary(start);
3796 let buffer_end = map.next_line_boundary(end);
3797 buffer_start.row..buffer_end.row + 1
3798 }
3799}
3800
3801pub fn diagnostic_block_renderer(
3802 diagnostic: Diagnostic,
3803 is_valid: bool,
3804 build_settings: BuildSettings,
3805) -> RenderBlock {
3806 Arc::new(move |cx: &BlockContext| {
3807 let settings = build_settings(cx);
3808 let mut text_style = settings.style.text.clone();
3809 text_style.color = diagnostic_style(diagnostic.severity, is_valid, &settings.style).text;
3810 Text::new(diagnostic.message.clone(), text_style)
3811 .contained()
3812 .with_margin_left(cx.anchor_x)
3813 .boxed()
3814 })
3815}
3816
3817pub fn diagnostic_header_renderer(
3818 buffer: ModelHandle<Buffer>,
3819 diagnostic: Diagnostic,
3820 is_valid: bool,
3821 build_settings: BuildSettings,
3822) -> RenderBlock {
3823 Arc::new(move |cx| {
3824 let settings = build_settings(cx);
3825 let mut text_style = settings.style.text.clone();
3826 text_style.color = diagnostic_style(diagnostic.severity, is_valid, &settings.style).text;
3827 let file_path = if let Some(file) = buffer.read(&**cx).file() {
3828 file.path().to_string_lossy().to_string()
3829 } else {
3830 "untitled".to_string()
3831 };
3832
3833 Flex::column()
3834 .with_child(Label::new(diagnostic.message.clone(), text_style).boxed())
3835 .with_child(Label::new(file_path, settings.style.text.clone()).boxed())
3836 .boxed()
3837 })
3838}
3839
3840pub fn context_header_renderer(build_settings: BuildSettings) -> RenderBlock {
3841 Arc::new(move |cx| {
3842 let settings = build_settings(cx);
3843 let text_style = settings.style.text.clone();
3844 Label::new("...".to_string(), text_style).boxed()
3845 })
3846}
3847
3848pub fn diagnostic_style(
3849 severity: DiagnosticSeverity,
3850 valid: bool,
3851 style: &EditorStyle,
3852) -> DiagnosticStyle {
3853 match (severity, valid) {
3854 (DiagnosticSeverity::ERROR, true) => style.error_diagnostic,
3855 (DiagnosticSeverity::ERROR, false) => style.invalid_error_diagnostic,
3856 (DiagnosticSeverity::WARNING, true) => style.warning_diagnostic,
3857 (DiagnosticSeverity::WARNING, false) => style.invalid_warning_diagnostic,
3858 (DiagnosticSeverity::INFORMATION, true) => style.information_diagnostic,
3859 (DiagnosticSeverity::INFORMATION, false) => style.invalid_information_diagnostic,
3860 (DiagnosticSeverity::HINT, true) => style.hint_diagnostic,
3861 (DiagnosticSeverity::HINT, false) => style.invalid_hint_diagnostic,
3862 _ => Default::default(),
3863 }
3864}
3865
3866pub fn settings_builder(
3867 buffer: WeakModelHandle<MultiBuffer>,
3868 settings: watch::Receiver<workspace::Settings>,
3869) -> BuildSettings {
3870 Arc::new(move |cx| {
3871 let settings = settings.borrow();
3872 let font_cache = cx.font_cache();
3873 let font_family_id = settings.buffer_font_family;
3874 let font_family_name = cx.font_cache().family_name(font_family_id).unwrap();
3875 let font_properties = Default::default();
3876 let font_id = font_cache
3877 .select_font(font_family_id, &font_properties)
3878 .unwrap();
3879 let font_size = settings.buffer_font_size;
3880
3881 let mut theme = settings.theme.editor.clone();
3882 theme.text = TextStyle {
3883 color: theme.text.color,
3884 font_family_name,
3885 font_family_id,
3886 font_id,
3887 font_size,
3888 font_properties,
3889 underline: None,
3890 };
3891 let language = buffer.upgrade(cx).and_then(|buf| buf.read(cx).language(cx));
3892 let soft_wrap = match settings.soft_wrap(language) {
3893 workspace::settings::SoftWrap::None => SoftWrap::None,
3894 workspace::settings::SoftWrap::EditorWidth => SoftWrap::EditorWidth,
3895 workspace::settings::SoftWrap::PreferredLineLength => {
3896 SoftWrap::Column(settings.preferred_line_length(language).saturating_sub(1))
3897 }
3898 };
3899
3900 EditorSettings {
3901 tab_size: settings.tab_size,
3902 soft_wrap,
3903 style: theme,
3904 }
3905 })
3906}
3907
3908#[cfg(test)]
3909mod tests {
3910 use super::*;
3911 use language::LanguageConfig;
3912 use std::time::Instant;
3913 use text::Point;
3914 use unindent::Unindent;
3915 use util::test::sample_text;
3916
3917 #[gpui::test]
3918 fn test_undo_redo_with_selection_restoration(cx: &mut MutableAppContext) {
3919 let mut now = Instant::now();
3920 let buffer = cx.add_model(|cx| language::Buffer::new(0, "123456", cx));
3921 let group_interval = buffer.read(cx).transaction_group_interval();
3922 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
3923 let settings = EditorSettings::test(cx);
3924 let (_, editor) = cx.add_window(Default::default(), |cx| {
3925 build_editor(buffer.clone(), settings, cx)
3926 });
3927
3928 editor.update(cx, |editor, cx| {
3929 editor.start_transaction_at(now, cx);
3930 editor.select_ranges([2..4], None, cx);
3931 editor.insert("cd", cx);
3932 editor.end_transaction_at(now, cx);
3933 assert_eq!(editor.text(cx), "12cd56");
3934 assert_eq!(editor.selected_ranges(cx), vec![4..4]);
3935
3936 editor.start_transaction_at(now, cx);
3937 editor.select_ranges([4..5], None, cx);
3938 editor.insert("e", cx);
3939 editor.end_transaction_at(now, cx);
3940 assert_eq!(editor.text(cx), "12cde6");
3941 assert_eq!(editor.selected_ranges(cx), vec![5..5]);
3942
3943 now += group_interval + Duration::from_millis(1);
3944 editor.select_ranges([2..2], None, cx);
3945
3946 // Simulate an edit in another editor
3947 buffer.update(cx, |buffer, cx| {
3948 buffer.start_transaction_at(now, cx);
3949 buffer.edit([0..1], "a", cx);
3950 buffer.edit([1..1], "b", cx);
3951 buffer.end_transaction_at(now, cx);
3952 });
3953
3954 assert_eq!(editor.text(cx), "ab2cde6");
3955 assert_eq!(editor.selected_ranges(cx), vec![3..3]);
3956
3957 // Last transaction happened past the group interval in a different editor.
3958 // Undo it individually and don't restore selections.
3959 editor.undo(&Undo, cx);
3960 assert_eq!(editor.text(cx), "12cde6");
3961 assert_eq!(editor.selected_ranges(cx), vec![2..2]);
3962
3963 // First two transactions happened within the group interval in this editor.
3964 // Undo them together and restore selections.
3965 editor.undo(&Undo, cx);
3966 editor.undo(&Undo, cx); // Undo stack is empty here, so this is a no-op.
3967 assert_eq!(editor.text(cx), "123456");
3968 assert_eq!(editor.selected_ranges(cx), vec![0..0]);
3969
3970 // Redo the first two transactions together.
3971 editor.redo(&Redo, cx);
3972 assert_eq!(editor.text(cx), "12cde6");
3973 assert_eq!(editor.selected_ranges(cx), vec![5..5]);
3974
3975 // Redo the last transaction on its own.
3976 editor.redo(&Redo, cx);
3977 assert_eq!(editor.text(cx), "ab2cde6");
3978 assert_eq!(editor.selected_ranges(cx), vec![6..6]);
3979
3980 // Test empty transactions.
3981 editor.start_transaction_at(now, cx);
3982 editor.end_transaction_at(now, cx);
3983 editor.undo(&Undo, cx);
3984 assert_eq!(editor.text(cx), "12cde6");
3985 });
3986 }
3987
3988 #[gpui::test]
3989 fn test_selection_with_mouse(cx: &mut gpui::MutableAppContext) {
3990 let buffer = MultiBuffer::build_simple("aaaaaa\nbbbbbb\ncccccc\ndddddd\n", cx);
3991 let settings = EditorSettings::test(cx);
3992 let (_, editor) =
3993 cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
3994
3995 editor.update(cx, |view, cx| {
3996 view.begin_selection(DisplayPoint::new(2, 2), false, 1, cx);
3997 });
3998
3999 assert_eq!(
4000 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
4001 [DisplayPoint::new(2, 2)..DisplayPoint::new(2, 2)]
4002 );
4003
4004 editor.update(cx, |view, cx| {
4005 view.update_selection(DisplayPoint::new(3, 3), 0, Vector2F::zero(), cx);
4006 });
4007
4008 assert_eq!(
4009 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
4010 [DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3)]
4011 );
4012
4013 editor.update(cx, |view, cx| {
4014 view.update_selection(DisplayPoint::new(1, 1), 0, Vector2F::zero(), cx);
4015 });
4016
4017 assert_eq!(
4018 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
4019 [DisplayPoint::new(2, 2)..DisplayPoint::new(1, 1)]
4020 );
4021
4022 editor.update(cx, |view, cx| {
4023 view.end_selection(cx);
4024 view.update_selection(DisplayPoint::new(3, 3), 0, Vector2F::zero(), cx);
4025 });
4026
4027 assert_eq!(
4028 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
4029 [DisplayPoint::new(2, 2)..DisplayPoint::new(1, 1)]
4030 );
4031
4032 editor.update(cx, |view, cx| {
4033 view.begin_selection(DisplayPoint::new(3, 3), true, 1, cx);
4034 view.update_selection(DisplayPoint::new(0, 0), 0, Vector2F::zero(), cx);
4035 });
4036
4037 assert_eq!(
4038 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
4039 [
4040 DisplayPoint::new(2, 2)..DisplayPoint::new(1, 1),
4041 DisplayPoint::new(3, 3)..DisplayPoint::new(0, 0)
4042 ]
4043 );
4044
4045 editor.update(cx, |view, cx| {
4046 view.end_selection(cx);
4047 });
4048
4049 assert_eq!(
4050 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
4051 [DisplayPoint::new(3, 3)..DisplayPoint::new(0, 0)]
4052 );
4053 }
4054
4055 #[gpui::test]
4056 fn test_canceling_pending_selection(cx: &mut gpui::MutableAppContext) {
4057 let buffer = MultiBuffer::build_simple("aaaaaa\nbbbbbb\ncccccc\ndddddd\n", cx);
4058 let settings = EditorSettings::test(cx);
4059 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
4060
4061 view.update(cx, |view, cx| {
4062 view.begin_selection(DisplayPoint::new(2, 2), false, 1, cx);
4063 assert_eq!(
4064 view.selected_display_ranges(cx),
4065 [DisplayPoint::new(2, 2)..DisplayPoint::new(2, 2)]
4066 );
4067 });
4068
4069 view.update(cx, |view, cx| {
4070 view.update_selection(DisplayPoint::new(3, 3), 0, Vector2F::zero(), cx);
4071 assert_eq!(
4072 view.selected_display_ranges(cx),
4073 [DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3)]
4074 );
4075 });
4076
4077 view.update(cx, |view, cx| {
4078 view.cancel(&Cancel, cx);
4079 view.update_selection(DisplayPoint::new(1, 1), 0, Vector2F::zero(), cx);
4080 assert_eq!(
4081 view.selected_display_ranges(cx),
4082 [DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3)]
4083 );
4084 });
4085 }
4086
4087 #[gpui::test]
4088 fn test_cancel(cx: &mut gpui::MutableAppContext) {
4089 let buffer = MultiBuffer::build_simple("aaaaaa\nbbbbbb\ncccccc\ndddddd\n", cx);
4090 let settings = EditorSettings::test(cx);
4091 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
4092
4093 view.update(cx, |view, cx| {
4094 view.begin_selection(DisplayPoint::new(3, 4), false, 1, cx);
4095 view.update_selection(DisplayPoint::new(1, 1), 0, Vector2F::zero(), cx);
4096 view.end_selection(cx);
4097
4098 view.begin_selection(DisplayPoint::new(0, 1), true, 1, cx);
4099 view.update_selection(DisplayPoint::new(0, 3), 0, Vector2F::zero(), cx);
4100 view.end_selection(cx);
4101 assert_eq!(
4102 view.selected_display_ranges(cx),
4103 [
4104 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
4105 DisplayPoint::new(3, 4)..DisplayPoint::new(1, 1),
4106 ]
4107 );
4108 });
4109
4110 view.update(cx, |view, cx| {
4111 view.cancel(&Cancel, cx);
4112 assert_eq!(
4113 view.selected_display_ranges(cx),
4114 [DisplayPoint::new(3, 4)..DisplayPoint::new(1, 1)]
4115 );
4116 });
4117
4118 view.update(cx, |view, cx| {
4119 view.cancel(&Cancel, cx);
4120 assert_eq!(
4121 view.selected_display_ranges(cx),
4122 [DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1)]
4123 );
4124 });
4125 }
4126
4127 #[gpui::test]
4128 fn test_fold(cx: &mut gpui::MutableAppContext) {
4129 let buffer = MultiBuffer::build_simple(
4130 &"
4131 impl Foo {
4132 // Hello!
4133
4134 fn a() {
4135 1
4136 }
4137
4138 fn b() {
4139 2
4140 }
4141
4142 fn c() {
4143 3
4144 }
4145 }
4146 "
4147 .unindent(),
4148 cx,
4149 );
4150 let settings = EditorSettings::test(&cx);
4151 let (_, view) = cx.add_window(Default::default(), |cx| {
4152 build_editor(buffer.clone(), settings, cx)
4153 });
4154
4155 view.update(cx, |view, cx| {
4156 view.select_display_ranges(&[DisplayPoint::new(8, 0)..DisplayPoint::new(12, 0)], cx)
4157 .unwrap();
4158 view.fold(&Fold, cx);
4159 assert_eq!(
4160 view.display_text(cx),
4161 "
4162 impl Foo {
4163 // Hello!
4164
4165 fn a() {
4166 1
4167 }
4168
4169 fn b() {…
4170 }
4171
4172 fn c() {…
4173 }
4174 }
4175 "
4176 .unindent(),
4177 );
4178
4179 view.fold(&Fold, cx);
4180 assert_eq!(
4181 view.display_text(cx),
4182 "
4183 impl Foo {…
4184 }
4185 "
4186 .unindent(),
4187 );
4188
4189 view.unfold(&Unfold, cx);
4190 assert_eq!(
4191 view.display_text(cx),
4192 "
4193 impl Foo {
4194 // Hello!
4195
4196 fn a() {
4197 1
4198 }
4199
4200 fn b() {…
4201 }
4202
4203 fn c() {…
4204 }
4205 }
4206 "
4207 .unindent(),
4208 );
4209
4210 view.unfold(&Unfold, cx);
4211 assert_eq!(view.display_text(cx), buffer.read(cx).read(cx).text());
4212 });
4213 }
4214
4215 #[gpui::test]
4216 fn test_move_cursor(cx: &mut gpui::MutableAppContext) {
4217 let buffer = MultiBuffer::build_simple(&sample_text(6, 6, 'a'), cx);
4218 let settings = EditorSettings::test(&cx);
4219 let (_, view) = cx.add_window(Default::default(), |cx| {
4220 build_editor(buffer.clone(), settings, cx)
4221 });
4222
4223 buffer.update(cx, |buffer, cx| {
4224 buffer.edit(
4225 vec![
4226 Point::new(1, 0)..Point::new(1, 0),
4227 Point::new(1, 1)..Point::new(1, 1),
4228 ],
4229 "\t",
4230 cx,
4231 );
4232 });
4233
4234 view.update(cx, |view, cx| {
4235 assert_eq!(
4236 view.selected_display_ranges(cx),
4237 &[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)]
4238 );
4239
4240 view.move_down(&MoveDown, cx);
4241 assert_eq!(
4242 view.selected_display_ranges(cx),
4243 &[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)]
4244 );
4245
4246 view.move_right(&MoveRight, cx);
4247 assert_eq!(
4248 view.selected_display_ranges(cx),
4249 &[DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4)]
4250 );
4251
4252 view.move_left(&MoveLeft, cx);
4253 assert_eq!(
4254 view.selected_display_ranges(cx),
4255 &[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)]
4256 );
4257
4258 view.move_up(&MoveUp, cx);
4259 assert_eq!(
4260 view.selected_display_ranges(cx),
4261 &[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)]
4262 );
4263
4264 view.move_to_end(&MoveToEnd, cx);
4265 assert_eq!(
4266 view.selected_display_ranges(cx),
4267 &[DisplayPoint::new(5, 6)..DisplayPoint::new(5, 6)]
4268 );
4269
4270 view.move_to_beginning(&MoveToBeginning, cx);
4271 assert_eq!(
4272 view.selected_display_ranges(cx),
4273 &[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)]
4274 );
4275
4276 view.select_display_ranges(&[DisplayPoint::new(0, 1)..DisplayPoint::new(0, 2)], cx)
4277 .unwrap();
4278 view.select_to_beginning(&SelectToBeginning, cx);
4279 assert_eq!(
4280 view.selected_display_ranges(cx),
4281 &[DisplayPoint::new(0, 1)..DisplayPoint::new(0, 0)]
4282 );
4283
4284 view.select_to_end(&SelectToEnd, cx);
4285 assert_eq!(
4286 view.selected_display_ranges(cx),
4287 &[DisplayPoint::new(0, 1)..DisplayPoint::new(5, 6)]
4288 );
4289 });
4290 }
4291
4292 #[gpui::test]
4293 fn test_move_cursor_multibyte(cx: &mut gpui::MutableAppContext) {
4294 let buffer = MultiBuffer::build_simple("ⓐⓑⓒⓓⓔ\nabcde\nαβγδε\n", cx);
4295 let settings = EditorSettings::test(&cx);
4296 let (_, view) = cx.add_window(Default::default(), |cx| {
4297 build_editor(buffer.clone(), settings, cx)
4298 });
4299
4300 assert_eq!('ⓐ'.len_utf8(), 3);
4301 assert_eq!('α'.len_utf8(), 2);
4302
4303 view.update(cx, |view, cx| {
4304 view.fold_ranges(
4305 vec![
4306 Point::new(0, 6)..Point::new(0, 12),
4307 Point::new(1, 2)..Point::new(1, 4),
4308 Point::new(2, 4)..Point::new(2, 8),
4309 ],
4310 cx,
4311 );
4312 assert_eq!(view.display_text(cx), "ⓐⓑ…ⓔ\nab…e\nαβ…ε\n");
4313
4314 view.move_right(&MoveRight, cx);
4315 assert_eq!(
4316 view.selected_display_ranges(cx),
4317 &[empty_range(0, "ⓐ".len())]
4318 );
4319 view.move_right(&MoveRight, cx);
4320 assert_eq!(
4321 view.selected_display_ranges(cx),
4322 &[empty_range(0, "ⓐⓑ".len())]
4323 );
4324 view.move_right(&MoveRight, cx);
4325 assert_eq!(
4326 view.selected_display_ranges(cx),
4327 &[empty_range(0, "ⓐⓑ…".len())]
4328 );
4329
4330 view.move_down(&MoveDown, cx);
4331 assert_eq!(
4332 view.selected_display_ranges(cx),
4333 &[empty_range(1, "ab…".len())]
4334 );
4335 view.move_left(&MoveLeft, cx);
4336 assert_eq!(
4337 view.selected_display_ranges(cx),
4338 &[empty_range(1, "ab".len())]
4339 );
4340 view.move_left(&MoveLeft, cx);
4341 assert_eq!(
4342 view.selected_display_ranges(cx),
4343 &[empty_range(1, "a".len())]
4344 );
4345
4346 view.move_down(&MoveDown, cx);
4347 assert_eq!(
4348 view.selected_display_ranges(cx),
4349 &[empty_range(2, "α".len())]
4350 );
4351 view.move_right(&MoveRight, cx);
4352 assert_eq!(
4353 view.selected_display_ranges(cx),
4354 &[empty_range(2, "αβ".len())]
4355 );
4356 view.move_right(&MoveRight, cx);
4357 assert_eq!(
4358 view.selected_display_ranges(cx),
4359 &[empty_range(2, "αβ…".len())]
4360 );
4361 view.move_right(&MoveRight, cx);
4362 assert_eq!(
4363 view.selected_display_ranges(cx),
4364 &[empty_range(2, "αβ…ε".len())]
4365 );
4366
4367 view.move_up(&MoveUp, cx);
4368 assert_eq!(
4369 view.selected_display_ranges(cx),
4370 &[empty_range(1, "ab…e".len())]
4371 );
4372 view.move_up(&MoveUp, cx);
4373 assert_eq!(
4374 view.selected_display_ranges(cx),
4375 &[empty_range(0, "ⓐⓑ…ⓔ".len())]
4376 );
4377 view.move_left(&MoveLeft, cx);
4378 assert_eq!(
4379 view.selected_display_ranges(cx),
4380 &[empty_range(0, "ⓐⓑ…".len())]
4381 );
4382 view.move_left(&MoveLeft, cx);
4383 assert_eq!(
4384 view.selected_display_ranges(cx),
4385 &[empty_range(0, "ⓐⓑ".len())]
4386 );
4387 view.move_left(&MoveLeft, cx);
4388 assert_eq!(
4389 view.selected_display_ranges(cx),
4390 &[empty_range(0, "ⓐ".len())]
4391 );
4392 });
4393 }
4394
4395 #[gpui::test]
4396 fn test_move_cursor_different_line_lengths(cx: &mut gpui::MutableAppContext) {
4397 let buffer = MultiBuffer::build_simple("ⓐⓑⓒⓓⓔ\nabcd\nαβγ\nabcd\nⓐⓑⓒⓓⓔ\n", cx);
4398 let settings = EditorSettings::test(&cx);
4399 let (_, view) = cx.add_window(Default::default(), |cx| {
4400 build_editor(buffer.clone(), settings, cx)
4401 });
4402 view.update(cx, |view, cx| {
4403 view.select_display_ranges(&[empty_range(0, "ⓐⓑⓒⓓⓔ".len())], cx)
4404 .unwrap();
4405
4406 view.move_down(&MoveDown, cx);
4407 assert_eq!(
4408 view.selected_display_ranges(cx),
4409 &[empty_range(1, "abcd".len())]
4410 );
4411
4412 view.move_down(&MoveDown, cx);
4413 assert_eq!(
4414 view.selected_display_ranges(cx),
4415 &[empty_range(2, "αβγ".len())]
4416 );
4417
4418 view.move_down(&MoveDown, cx);
4419 assert_eq!(
4420 view.selected_display_ranges(cx),
4421 &[empty_range(3, "abcd".len())]
4422 );
4423
4424 view.move_down(&MoveDown, cx);
4425 assert_eq!(
4426 view.selected_display_ranges(cx),
4427 &[empty_range(4, "ⓐⓑⓒⓓⓔ".len())]
4428 );
4429
4430 view.move_up(&MoveUp, cx);
4431 assert_eq!(
4432 view.selected_display_ranges(cx),
4433 &[empty_range(3, "abcd".len())]
4434 );
4435
4436 view.move_up(&MoveUp, cx);
4437 assert_eq!(
4438 view.selected_display_ranges(cx),
4439 &[empty_range(2, "αβγ".len())]
4440 );
4441 });
4442 }
4443
4444 #[gpui::test]
4445 fn test_beginning_end_of_line(cx: &mut gpui::MutableAppContext) {
4446 let buffer = MultiBuffer::build_simple("abc\n def", cx);
4447 let settings = EditorSettings::test(&cx);
4448 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
4449 view.update(cx, |view, cx| {
4450 view.select_display_ranges(
4451 &[
4452 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
4453 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4),
4454 ],
4455 cx,
4456 )
4457 .unwrap();
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_beginning_of_line(&MoveToBeginningOfLine, cx);
4473 assert_eq!(
4474 view.selected_display_ranges(cx),
4475 &[
4476 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
4477 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
4478 ]
4479 );
4480 });
4481
4482 view.update(cx, |view, cx| {
4483 view.move_to_beginning_of_line(&MoveToBeginningOfLine, cx);
4484 assert_eq!(
4485 view.selected_display_ranges(cx),
4486 &[
4487 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
4488 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
4489 ]
4490 );
4491 });
4492
4493 view.update(cx, |view, cx| {
4494 view.move_to_end_of_line(&MoveToEndOfLine, cx);
4495 assert_eq!(
4496 view.selected_display_ranges(cx),
4497 &[
4498 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
4499 DisplayPoint::new(1, 5)..DisplayPoint::new(1, 5),
4500 ]
4501 );
4502 });
4503
4504 // Moving to the end of line again is a no-op.
4505 view.update(cx, |view, cx| {
4506 view.move_to_end_of_line(&MoveToEndOfLine, cx);
4507 assert_eq!(
4508 view.selected_display_ranges(cx),
4509 &[
4510 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
4511 DisplayPoint::new(1, 5)..DisplayPoint::new(1, 5),
4512 ]
4513 );
4514 });
4515
4516 view.update(cx, |view, cx| {
4517 view.move_left(&MoveLeft, 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_beginning_of_line(&SelectToBeginningOfLine(true), cx);
4530 assert_eq!(
4531 view.selected_display_ranges(cx),
4532 &[
4533 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 0),
4534 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 0),
4535 ]
4536 );
4537 });
4538
4539 view.update(cx, |view, cx| {
4540 view.select_to_beginning_of_line(&SelectToBeginningOfLine(true), cx);
4541 assert_eq!(
4542 view.selected_display_ranges(cx),
4543 &[
4544 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 0),
4545 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 2),
4546 ]
4547 );
4548 });
4549
4550 view.update(cx, |view, cx| {
4551 view.select_to_end_of_line(&SelectToEndOfLine, cx);
4552 assert_eq!(
4553 view.selected_display_ranges(cx),
4554 &[
4555 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 3),
4556 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 5),
4557 ]
4558 );
4559 });
4560
4561 view.update(cx, |view, cx| {
4562 view.delete_to_end_of_line(&DeleteToEndOfLine, cx);
4563 assert_eq!(view.display_text(cx), "ab\n de");
4564 assert_eq!(
4565 view.selected_display_ranges(cx),
4566 &[
4567 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
4568 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4),
4569 ]
4570 );
4571 });
4572
4573 view.update(cx, |view, cx| {
4574 view.delete_to_beginning_of_line(&DeleteToBeginningOfLine, cx);
4575 assert_eq!(view.display_text(cx), "\n");
4576 assert_eq!(
4577 view.selected_display_ranges(cx),
4578 &[
4579 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
4580 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
4581 ]
4582 );
4583 });
4584 }
4585
4586 #[gpui::test]
4587 fn test_prev_next_word_boundary(cx: &mut gpui::MutableAppContext) {
4588 let buffer = MultiBuffer::build_simple("use std::str::{foo, bar}\n\n {baz.qux()}", cx);
4589 let settings = EditorSettings::test(&cx);
4590 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
4591 view.update(cx, |view, cx| {
4592 view.select_display_ranges(
4593 &[
4594 DisplayPoint::new(0, 11)..DisplayPoint::new(0, 11),
4595 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 4),
4596 ],
4597 cx,
4598 )
4599 .unwrap();
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, 9)..DisplayPoint::new(0, 9),
4608 DisplayPoint::new(2, 3)..DisplayPoint::new(2, 3),
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, 7)..DisplayPoint::new(0, 7),
4619 DisplayPoint::new(2, 2)..DisplayPoint::new(2, 2),
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, 4)..DisplayPoint::new(0, 4),
4630 DisplayPoint::new(2, 0)..DisplayPoint::new(2, 0),
4631 ]
4632 );
4633 });
4634
4635 view.update(cx, |view, cx| {
4636 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
4637 assert_eq!(
4638 view.selected_display_ranges(cx),
4639 &[
4640 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
4641 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
4642 ]
4643 );
4644 });
4645
4646 view.update(cx, |view, cx| {
4647 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
4648 assert_eq!(
4649 view.selected_display_ranges(cx),
4650 &[
4651 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
4652 DisplayPoint::new(0, 23)..DisplayPoint::new(0, 23),
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, 3)..DisplayPoint::new(0, 3),
4663 DisplayPoint::new(0, 24)..DisplayPoint::new(0, 24),
4664 ]
4665 );
4666 });
4667
4668 view.update(cx, |view, cx| {
4669 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
4670 assert_eq!(
4671 view.selected_display_ranges(cx),
4672 &[
4673 DisplayPoint::new(0, 7)..DisplayPoint::new(0, 7),
4674 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
4675 ]
4676 );
4677 });
4678
4679 view.update(cx, |view, cx| {
4680 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
4681 assert_eq!(
4682 view.selected_display_ranges(cx),
4683 &[
4684 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 9),
4685 DisplayPoint::new(2, 3)..DisplayPoint::new(2, 3),
4686 ]
4687 );
4688 });
4689
4690 view.update(cx, |view, cx| {
4691 view.move_right(&MoveRight, cx);
4692 view.select_to_previous_word_boundary(&SelectToPreviousWordBoundary, 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 view.update(cx, |view, cx| {
4703 view.select_to_previous_word_boundary(&SelectToPreviousWordBoundary, cx);
4704 assert_eq!(
4705 view.selected_display_ranges(cx),
4706 &[
4707 DisplayPoint::new(0, 10)..DisplayPoint::new(0, 7),
4708 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 2),
4709 ]
4710 );
4711 });
4712
4713 view.update(cx, |view, cx| {
4714 view.select_to_next_word_boundary(&SelectToNextWordBoundary, cx);
4715 assert_eq!(
4716 view.selected_display_ranges(cx),
4717 &[
4718 DisplayPoint::new(0, 10)..DisplayPoint::new(0, 9),
4719 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 3),
4720 ]
4721 );
4722 });
4723 }
4724
4725 #[gpui::test]
4726 fn test_prev_next_word_bounds_with_soft_wrap(cx: &mut gpui::MutableAppContext) {
4727 let buffer = MultiBuffer::build_simple("use one::{\n two::three::four::five\n};", cx);
4728 let settings = EditorSettings::test(&cx);
4729 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
4730
4731 view.update(cx, |view, cx| {
4732 view.set_wrap_width(Some(140.), cx);
4733 assert_eq!(
4734 view.display_text(cx),
4735 "use one::{\n two::three::\n four::five\n};"
4736 );
4737
4738 view.select_display_ranges(&[DisplayPoint::new(1, 7)..DisplayPoint::new(1, 7)], cx)
4739 .unwrap();
4740
4741 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
4742 assert_eq!(
4743 view.selected_display_ranges(cx),
4744 &[DisplayPoint::new(1, 9)..DisplayPoint::new(1, 9)]
4745 );
4746
4747 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
4748 assert_eq!(
4749 view.selected_display_ranges(cx),
4750 &[DisplayPoint::new(1, 14)..DisplayPoint::new(1, 14)]
4751 );
4752
4753 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
4754 assert_eq!(
4755 view.selected_display_ranges(cx),
4756 &[DisplayPoint::new(2, 4)..DisplayPoint::new(2, 4)]
4757 );
4758
4759 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
4760 assert_eq!(
4761 view.selected_display_ranges(cx),
4762 &[DisplayPoint::new(2, 8)..DisplayPoint::new(2, 8)]
4763 );
4764
4765 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
4766 assert_eq!(
4767 view.selected_display_ranges(cx),
4768 &[DisplayPoint::new(2, 4)..DisplayPoint::new(2, 4)]
4769 );
4770
4771 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
4772 assert_eq!(
4773 view.selected_display_ranges(cx),
4774 &[DisplayPoint::new(1, 14)..DisplayPoint::new(1, 14)]
4775 );
4776 });
4777 }
4778
4779 #[gpui::test]
4780 fn test_delete_to_word_boundary(cx: &mut gpui::MutableAppContext) {
4781 let buffer = MultiBuffer::build_simple("one two three four", cx);
4782 let settings = EditorSettings::test(&cx);
4783 let (_, view) = cx.add_window(Default::default(), |cx| {
4784 build_editor(buffer.clone(), settings, cx)
4785 });
4786
4787 view.update(cx, |view, cx| {
4788 view.select_display_ranges(
4789 &[
4790 // an empty selection - the preceding word fragment is deleted
4791 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
4792 // characters selected - they are deleted
4793 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 12),
4794 ],
4795 cx,
4796 )
4797 .unwrap();
4798 view.delete_to_previous_word_boundary(&DeleteToPreviousWordBoundary, cx);
4799 });
4800
4801 assert_eq!(buffer.read(cx).read(cx).text(), "e two te four");
4802
4803 view.update(cx, |view, cx| {
4804 view.select_display_ranges(
4805 &[
4806 // an empty selection - the following word fragment is deleted
4807 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
4808 // characters selected - they are deleted
4809 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 10),
4810 ],
4811 cx,
4812 )
4813 .unwrap();
4814 view.delete_to_next_word_boundary(&DeleteToNextWordBoundary, cx);
4815 });
4816
4817 assert_eq!(buffer.read(cx).read(cx).text(), "e t te our");
4818 }
4819
4820 #[gpui::test]
4821 fn test_newline(cx: &mut gpui::MutableAppContext) {
4822 let buffer = MultiBuffer::build_simple("aaaa\n bbbb\n", cx);
4823 let settings = EditorSettings::test(&cx);
4824 let (_, view) = cx.add_window(Default::default(), |cx| {
4825 build_editor(buffer.clone(), settings, cx)
4826 });
4827
4828 view.update(cx, |view, cx| {
4829 view.select_display_ranges(
4830 &[
4831 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
4832 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
4833 DisplayPoint::new(1, 6)..DisplayPoint::new(1, 6),
4834 ],
4835 cx,
4836 )
4837 .unwrap();
4838
4839 view.newline(&Newline, cx);
4840 assert_eq!(view.text(cx), "aa\naa\n \n bb\n bb\n");
4841 });
4842 }
4843
4844 #[gpui::test]
4845 fn test_indent_outdent(cx: &mut gpui::MutableAppContext) {
4846 let buffer = MultiBuffer::build_simple(" one two\nthree\n four", cx);
4847 let settings = EditorSettings::test(&cx);
4848 let (_, view) = cx.add_window(Default::default(), |cx| {
4849 build_editor(buffer.clone(), settings, cx)
4850 });
4851
4852 view.update(cx, |view, cx| {
4853 // two selections on the same line
4854 view.select_display_ranges(
4855 &[
4856 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 5),
4857 DisplayPoint::new(0, 6)..DisplayPoint::new(0, 9),
4858 ],
4859 cx,
4860 )
4861 .unwrap();
4862
4863 // indent from mid-tabstop to full tabstop
4864 view.tab(&Tab, cx);
4865 assert_eq!(view.text(cx), " one two\nthree\n four");
4866 assert_eq!(
4867 view.selected_display_ranges(cx),
4868 &[
4869 DisplayPoint::new(0, 4)..DisplayPoint::new(0, 7),
4870 DisplayPoint::new(0, 8)..DisplayPoint::new(0, 11),
4871 ]
4872 );
4873
4874 // outdent from 1 tabstop to 0 tabstops
4875 view.outdent(&Outdent, cx);
4876 assert_eq!(view.text(cx), "one two\nthree\n four");
4877 assert_eq!(
4878 view.selected_display_ranges(cx),
4879 &[
4880 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 3),
4881 DisplayPoint::new(0, 4)..DisplayPoint::new(0, 7),
4882 ]
4883 );
4884
4885 // select across line ending
4886 view.select_display_ranges(&[DisplayPoint::new(1, 1)..DisplayPoint::new(2, 0)], cx)
4887 .unwrap();
4888
4889 // indent and outdent affect only the preceding line
4890 view.tab(&Tab, cx);
4891 assert_eq!(view.text(cx), "one two\n three\n four");
4892 assert_eq!(
4893 view.selected_display_ranges(cx),
4894 &[DisplayPoint::new(1, 5)..DisplayPoint::new(2, 0)]
4895 );
4896 view.outdent(&Outdent, cx);
4897 assert_eq!(view.text(cx), "one two\nthree\n four");
4898 assert_eq!(
4899 view.selected_display_ranges(cx),
4900 &[DisplayPoint::new(1, 1)..DisplayPoint::new(2, 0)]
4901 );
4902 });
4903 }
4904
4905 #[gpui::test]
4906 fn test_backspace(cx: &mut gpui::MutableAppContext) {
4907 let buffer =
4908 MultiBuffer::build_simple("one two three\nfour five six\nseven eight nine\nten\n", cx);
4909 let settings = EditorSettings::test(&cx);
4910 let (_, view) = cx.add_window(Default::default(), |cx| {
4911 build_editor(buffer.clone(), settings, cx)
4912 });
4913
4914 view.update(cx, |view, cx| {
4915 view.select_display_ranges(
4916 &[
4917 // an empty selection - the preceding character is deleted
4918 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
4919 // one character selected - it is deleted
4920 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
4921 // a line suffix selected - it is deleted
4922 DisplayPoint::new(2, 6)..DisplayPoint::new(3, 0),
4923 ],
4924 cx,
4925 )
4926 .unwrap();
4927 view.backspace(&Backspace, cx);
4928 });
4929
4930 assert_eq!(
4931 buffer.read(cx).read(cx).text(),
4932 "oe two three\nfou five six\nseven ten\n"
4933 );
4934 }
4935
4936 #[gpui::test]
4937 fn test_delete(cx: &mut gpui::MutableAppContext) {
4938 let buffer =
4939 MultiBuffer::build_simple("one two three\nfour five six\nseven eight nine\nten\n", cx);
4940 let settings = EditorSettings::test(&cx);
4941 let (_, view) = cx.add_window(Default::default(), |cx| {
4942 build_editor(buffer.clone(), settings, cx)
4943 });
4944
4945 view.update(cx, |view, cx| {
4946 view.select_display_ranges(
4947 &[
4948 // an empty selection - the following character is deleted
4949 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
4950 // one character selected - it is deleted
4951 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
4952 // a line suffix selected - it is deleted
4953 DisplayPoint::new(2, 6)..DisplayPoint::new(3, 0),
4954 ],
4955 cx,
4956 )
4957 .unwrap();
4958 view.delete(&Delete, cx);
4959 });
4960
4961 assert_eq!(
4962 buffer.read(cx).read(cx).text(),
4963 "on two three\nfou five six\nseven ten\n"
4964 );
4965 }
4966
4967 #[gpui::test]
4968 fn test_delete_line(cx: &mut gpui::MutableAppContext) {
4969 let settings = EditorSettings::test(&cx);
4970 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
4971 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
4972 view.update(cx, |view, cx| {
4973 view.select_display_ranges(
4974 &[
4975 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
4976 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 1),
4977 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
4978 ],
4979 cx,
4980 )
4981 .unwrap();
4982 view.delete_line(&DeleteLine, cx);
4983 assert_eq!(view.display_text(cx), "ghi");
4984 assert_eq!(
4985 view.selected_display_ranges(cx),
4986 vec![
4987 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
4988 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1)
4989 ]
4990 );
4991 });
4992
4993 let settings = EditorSettings::test(&cx);
4994 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
4995 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
4996 view.update(cx, |view, cx| {
4997 view.select_display_ranges(&[DisplayPoint::new(2, 0)..DisplayPoint::new(0, 1)], cx)
4998 .unwrap();
4999 view.delete_line(&DeleteLine, cx);
5000 assert_eq!(view.display_text(cx), "ghi\n");
5001 assert_eq!(
5002 view.selected_display_ranges(cx),
5003 vec![DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1)]
5004 );
5005 });
5006 }
5007
5008 #[gpui::test]
5009 fn test_duplicate_line(cx: &mut gpui::MutableAppContext) {
5010 let settings = EditorSettings::test(&cx);
5011 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
5012 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
5013 view.update(cx, |view, cx| {
5014 view.select_display_ranges(
5015 &[
5016 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
5017 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
5018 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
5019 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
5020 ],
5021 cx,
5022 )
5023 .unwrap();
5024 view.duplicate_line(&DuplicateLine, cx);
5025 assert_eq!(view.display_text(cx), "abc\nabc\ndef\ndef\nghi\n\n");
5026 assert_eq!(
5027 view.selected_display_ranges(cx),
5028 vec![
5029 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 1),
5030 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
5031 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
5032 DisplayPoint::new(6, 0)..DisplayPoint::new(6, 0),
5033 ]
5034 );
5035 });
5036
5037 let settings = EditorSettings::test(&cx);
5038 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
5039 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
5040 view.update(cx, |view, cx| {
5041 view.select_display_ranges(
5042 &[
5043 DisplayPoint::new(0, 1)..DisplayPoint::new(1, 1),
5044 DisplayPoint::new(1, 2)..DisplayPoint::new(2, 1),
5045 ],
5046 cx,
5047 )
5048 .unwrap();
5049 view.duplicate_line(&DuplicateLine, cx);
5050 assert_eq!(view.display_text(cx), "abc\ndef\nghi\nabc\ndef\nghi\n");
5051 assert_eq!(
5052 view.selected_display_ranges(cx),
5053 vec![
5054 DisplayPoint::new(3, 1)..DisplayPoint::new(4, 1),
5055 DisplayPoint::new(4, 2)..DisplayPoint::new(5, 1),
5056 ]
5057 );
5058 });
5059 }
5060
5061 #[gpui::test]
5062 fn test_move_line_up_down(cx: &mut gpui::MutableAppContext) {
5063 let settings = EditorSettings::test(&cx);
5064 let buffer = MultiBuffer::build_simple(&sample_text(10, 5, 'a'), cx);
5065 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
5066 view.update(cx, |view, cx| {
5067 view.fold_ranges(
5068 vec![
5069 Point::new(0, 2)..Point::new(1, 2),
5070 Point::new(2, 3)..Point::new(4, 1),
5071 Point::new(7, 0)..Point::new(8, 4),
5072 ],
5073 cx,
5074 );
5075 view.select_display_ranges(
5076 &[
5077 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
5078 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 1),
5079 DisplayPoint::new(3, 2)..DisplayPoint::new(4, 3),
5080 DisplayPoint::new(5, 0)..DisplayPoint::new(5, 2),
5081 ],
5082 cx,
5083 )
5084 .unwrap();
5085 assert_eq!(
5086 view.display_text(cx),
5087 "aa…bbb\nccc…eeee\nfffff\nggggg\n…i\njjjjj"
5088 );
5089
5090 view.move_line_up(&MoveLineUp, cx);
5091 assert_eq!(
5092 view.display_text(cx),
5093 "aa…bbb\nccc…eeee\nggggg\n…i\njjjjj\nfffff"
5094 );
5095 assert_eq!(
5096 view.selected_display_ranges(cx),
5097 vec![
5098 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
5099 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
5100 DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3),
5101 DisplayPoint::new(4, 0)..DisplayPoint::new(4, 2)
5102 ]
5103 );
5104 });
5105
5106 view.update(cx, |view, cx| {
5107 view.move_line_down(&MoveLineDown, cx);
5108 assert_eq!(
5109 view.display_text(cx),
5110 "ccc…eeee\naa…bbb\nfffff\nggggg\n…i\njjjjj"
5111 );
5112 assert_eq!(
5113 view.selected_display_ranges(cx),
5114 vec![
5115 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
5116 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 1),
5117 DisplayPoint::new(3, 2)..DisplayPoint::new(4, 3),
5118 DisplayPoint::new(5, 0)..DisplayPoint::new(5, 2)
5119 ]
5120 );
5121 });
5122
5123 view.update(cx, |view, cx| {
5124 view.move_line_down(&MoveLineDown, cx);
5125 assert_eq!(
5126 view.display_text(cx),
5127 "ccc…eeee\nfffff\naa…bbb\nggggg\n…i\njjjjj"
5128 );
5129 assert_eq!(
5130 view.selected_display_ranges(cx),
5131 vec![
5132 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
5133 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 1),
5134 DisplayPoint::new(3, 2)..DisplayPoint::new(4, 3),
5135 DisplayPoint::new(5, 0)..DisplayPoint::new(5, 2)
5136 ]
5137 );
5138 });
5139
5140 view.update(cx, |view, cx| {
5141 view.move_line_up(&MoveLineUp, cx);
5142 assert_eq!(
5143 view.display_text(cx),
5144 "ccc…eeee\naa…bbb\nggggg\n…i\njjjjj\nfffff"
5145 );
5146 assert_eq!(
5147 view.selected_display_ranges(cx),
5148 vec![
5149 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
5150 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
5151 DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3),
5152 DisplayPoint::new(4, 0)..DisplayPoint::new(4, 2)
5153 ]
5154 );
5155 });
5156 }
5157
5158 #[gpui::test]
5159 fn test_move_line_up_down_with_blocks(cx: &mut gpui::MutableAppContext) {
5160 let settings = EditorSettings::test(&cx);
5161 let buffer = MultiBuffer::build_simple(&sample_text(10, 5, 'a'), cx);
5162 let (_, editor) =
5163 cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
5164 editor.update(cx, |editor, cx| {
5165 editor.insert_blocks(
5166 [BlockProperties {
5167 position: Point::new(2, 0),
5168 disposition: BlockDisposition::Below,
5169 height: 1,
5170 render: Arc::new(|_| Empty::new().boxed()),
5171 }],
5172 cx,
5173 );
5174 editor.select_ranges([Point::new(2, 0)..Point::new(2, 0)], None, cx);
5175 editor.move_line_down(&MoveLineDown, cx);
5176 });
5177 }
5178
5179 #[gpui::test]
5180 fn test_clipboard(cx: &mut gpui::MutableAppContext) {
5181 let buffer = MultiBuffer::build_simple("one✅ two three four five six ", cx);
5182 let settings = EditorSettings::test(&cx);
5183 let view = cx
5184 .add_window(Default::default(), |cx| {
5185 build_editor(buffer.clone(), settings, cx)
5186 })
5187 .1;
5188
5189 // Cut with three selections. Clipboard text is divided into three slices.
5190 view.update(cx, |view, cx| {
5191 view.select_ranges(vec![0..7, 11..17, 22..27], None, cx);
5192 view.cut(&Cut, cx);
5193 assert_eq!(view.display_text(cx), "two four six ");
5194 });
5195
5196 // Paste with three cursors. Each cursor pastes one slice of the clipboard text.
5197 view.update(cx, |view, cx| {
5198 view.select_ranges(vec![4..4, 9..9, 13..13], None, cx);
5199 view.paste(&Paste, cx);
5200 assert_eq!(view.display_text(cx), "two one✅ four three six five ");
5201 assert_eq!(
5202 view.selected_display_ranges(cx),
5203 &[
5204 DisplayPoint::new(0, 11)..DisplayPoint::new(0, 11),
5205 DisplayPoint::new(0, 22)..DisplayPoint::new(0, 22),
5206 DisplayPoint::new(0, 31)..DisplayPoint::new(0, 31)
5207 ]
5208 );
5209 });
5210
5211 // Paste again but with only two cursors. Since the number of cursors doesn't
5212 // match the number of slices in the clipboard, the entire clipboard text
5213 // is pasted at each cursor.
5214 view.update(cx, |view, cx| {
5215 view.select_ranges(vec![0..0, 31..31], None, cx);
5216 view.handle_input(&Input("( ".into()), cx);
5217 view.paste(&Paste, cx);
5218 view.handle_input(&Input(") ".into()), cx);
5219 assert_eq!(
5220 view.display_text(cx),
5221 "( one✅ three five ) two one✅ four three six five ( one✅ three five ) "
5222 );
5223 });
5224
5225 view.update(cx, |view, cx| {
5226 view.select_ranges(vec![0..0], None, cx);
5227 view.handle_input(&Input("123\n4567\n89\n".into()), cx);
5228 assert_eq!(
5229 view.display_text(cx),
5230 "123\n4567\n89\n( one✅ three five ) two one✅ four three six five ( one✅ three five ) "
5231 );
5232 });
5233
5234 // Cut with three selections, one of which is full-line.
5235 view.update(cx, |view, cx| {
5236 view.select_display_ranges(
5237 &[
5238 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 2),
5239 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
5240 DisplayPoint::new(2, 0)..DisplayPoint::new(2, 1),
5241 ],
5242 cx,
5243 )
5244 .unwrap();
5245 view.cut(&Cut, cx);
5246 assert_eq!(
5247 view.display_text(cx),
5248 "13\n9\n( one✅ three five ) two one✅ four three six five ( one✅ three five ) "
5249 );
5250 });
5251
5252 // Paste with three selections, noticing how the copied selection that was full-line
5253 // gets inserted before the second cursor.
5254 view.update(cx, |view, cx| {
5255 view.select_display_ranges(
5256 &[
5257 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
5258 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
5259 DisplayPoint::new(2, 2)..DisplayPoint::new(2, 3),
5260 ],
5261 cx,
5262 )
5263 .unwrap();
5264 view.paste(&Paste, cx);
5265 assert_eq!(
5266 view.display_text(cx),
5267 "123\n4567\n9\n( 8ne✅ three five ) two one✅ four three six five ( one✅ three five ) "
5268 );
5269 assert_eq!(
5270 view.selected_display_ranges(cx),
5271 &[
5272 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
5273 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
5274 DisplayPoint::new(3, 3)..DisplayPoint::new(3, 3),
5275 ]
5276 );
5277 });
5278
5279 // Copy with a single cursor only, which writes the whole line into the clipboard.
5280 view.update(cx, |view, cx| {
5281 view.select_display_ranges(&[DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1)], cx)
5282 .unwrap();
5283 view.copy(&Copy, cx);
5284 });
5285
5286 // Paste with three selections, noticing how the copied full-line selection is inserted
5287 // before the empty selections but replaces the selection that is non-empty.
5288 view.update(cx, |view, cx| {
5289 view.select_display_ranges(
5290 &[
5291 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
5292 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 2),
5293 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
5294 ],
5295 cx,
5296 )
5297 .unwrap();
5298 view.paste(&Paste, cx);
5299 assert_eq!(
5300 view.display_text(cx),
5301 "123\n123\n123\n67\n123\n9\n( 8ne✅ three five ) two one✅ four three six five ( one✅ three five ) "
5302 );
5303 assert_eq!(
5304 view.selected_display_ranges(cx),
5305 &[
5306 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
5307 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
5308 DisplayPoint::new(5, 1)..DisplayPoint::new(5, 1),
5309 ]
5310 );
5311 });
5312 }
5313
5314 #[gpui::test]
5315 fn test_select_all(cx: &mut gpui::MutableAppContext) {
5316 let buffer = MultiBuffer::build_simple("abc\nde\nfgh", cx);
5317 let settings = EditorSettings::test(&cx);
5318 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
5319 view.update(cx, |view, cx| {
5320 view.select_all(&SelectAll, cx);
5321 assert_eq!(
5322 view.selected_display_ranges(cx),
5323 &[DisplayPoint::new(0, 0)..DisplayPoint::new(2, 3)]
5324 );
5325 });
5326 }
5327
5328 #[gpui::test]
5329 fn test_select_line(cx: &mut gpui::MutableAppContext) {
5330 let settings = EditorSettings::test(&cx);
5331 let buffer = MultiBuffer::build_simple(&sample_text(6, 5, 'a'), cx);
5332 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
5333 view.update(cx, |view, cx| {
5334 view.select_display_ranges(
5335 &[
5336 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
5337 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
5338 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
5339 DisplayPoint::new(4, 2)..DisplayPoint::new(4, 2),
5340 ],
5341 cx,
5342 )
5343 .unwrap();
5344 view.select_line(&SelectLine, cx);
5345 assert_eq!(
5346 view.selected_display_ranges(cx),
5347 vec![
5348 DisplayPoint::new(0, 0)..DisplayPoint::new(2, 0),
5349 DisplayPoint::new(4, 0)..DisplayPoint::new(5, 0),
5350 ]
5351 );
5352 });
5353
5354 view.update(cx, |view, cx| {
5355 view.select_line(&SelectLine, cx);
5356 assert_eq!(
5357 view.selected_display_ranges(cx),
5358 vec![
5359 DisplayPoint::new(0, 0)..DisplayPoint::new(3, 0),
5360 DisplayPoint::new(4, 0)..DisplayPoint::new(5, 5),
5361 ]
5362 );
5363 });
5364
5365 view.update(cx, |view, cx| {
5366 view.select_line(&SelectLine, cx);
5367 assert_eq!(
5368 view.selected_display_ranges(cx),
5369 vec![DisplayPoint::new(0, 0)..DisplayPoint::new(5, 5)]
5370 );
5371 });
5372 }
5373
5374 #[gpui::test]
5375 fn test_split_selection_into_lines(cx: &mut gpui::MutableAppContext) {
5376 let settings = EditorSettings::test(&cx);
5377 let buffer = MultiBuffer::build_simple(&sample_text(9, 5, 'a'), cx);
5378 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
5379 view.update(cx, |view, cx| {
5380 view.fold_ranges(
5381 vec![
5382 Point::new(0, 2)..Point::new(1, 2),
5383 Point::new(2, 3)..Point::new(4, 1),
5384 Point::new(7, 0)..Point::new(8, 4),
5385 ],
5386 cx,
5387 );
5388 view.select_display_ranges(
5389 &[
5390 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
5391 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
5392 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
5393 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 4),
5394 ],
5395 cx,
5396 )
5397 .unwrap();
5398 assert_eq!(view.display_text(cx), "aa…bbb\nccc…eeee\nfffff\nggggg\n…i");
5399 });
5400
5401 view.update(cx, |view, cx| {
5402 view.split_selection_into_lines(&SplitSelectionIntoLines, cx);
5403 assert_eq!(
5404 view.display_text(cx),
5405 "aaaaa\nbbbbb\nccc…eeee\nfffff\nggggg\n…i"
5406 );
5407 assert_eq!(
5408 view.selected_display_ranges(cx),
5409 [
5410 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
5411 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
5412 DisplayPoint::new(2, 0)..DisplayPoint::new(2, 0),
5413 DisplayPoint::new(5, 4)..DisplayPoint::new(5, 4)
5414 ]
5415 );
5416 });
5417
5418 view.update(cx, |view, cx| {
5419 view.select_display_ranges(&[DisplayPoint::new(5, 0)..DisplayPoint::new(0, 1)], cx)
5420 .unwrap();
5421 view.split_selection_into_lines(&SplitSelectionIntoLines, cx);
5422 assert_eq!(
5423 view.display_text(cx),
5424 "aaaaa\nbbbbb\nccccc\nddddd\neeeee\nfffff\nggggg\nhhhhh\niiiii"
5425 );
5426 assert_eq!(
5427 view.selected_display_ranges(cx),
5428 [
5429 DisplayPoint::new(0, 5)..DisplayPoint::new(0, 5),
5430 DisplayPoint::new(1, 5)..DisplayPoint::new(1, 5),
5431 DisplayPoint::new(2, 5)..DisplayPoint::new(2, 5),
5432 DisplayPoint::new(3, 5)..DisplayPoint::new(3, 5),
5433 DisplayPoint::new(4, 5)..DisplayPoint::new(4, 5),
5434 DisplayPoint::new(5, 5)..DisplayPoint::new(5, 5),
5435 DisplayPoint::new(6, 5)..DisplayPoint::new(6, 5),
5436 DisplayPoint::new(7, 0)..DisplayPoint::new(7, 0)
5437 ]
5438 );
5439 });
5440 }
5441
5442 #[gpui::test]
5443 fn test_add_selection_above_below(cx: &mut gpui::MutableAppContext) {
5444 let settings = EditorSettings::test(&cx);
5445 let buffer = MultiBuffer::build_simple("abc\ndefghi\n\njk\nlmno\n", cx);
5446 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
5447
5448 view.update(cx, |view, cx| {
5449 view.select_display_ranges(&[DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)], cx)
5450 .unwrap();
5451 });
5452 view.update(cx, |view, cx| {
5453 view.add_selection_above(&AddSelectionAbove, cx);
5454 assert_eq!(
5455 view.selected_display_ranges(cx),
5456 vec![
5457 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
5458 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)
5459 ]
5460 );
5461 });
5462
5463 view.update(cx, |view, cx| {
5464 view.add_selection_above(&AddSelectionAbove, cx);
5465 assert_eq!(
5466 view.selected_display_ranges(cx),
5467 vec![
5468 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
5469 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)
5470 ]
5471 );
5472 });
5473
5474 view.update(cx, |view, cx| {
5475 view.add_selection_below(&AddSelectionBelow, cx);
5476 assert_eq!(
5477 view.selected_display_ranges(cx),
5478 vec![DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)]
5479 );
5480 });
5481
5482 view.update(cx, |view, cx| {
5483 view.add_selection_below(&AddSelectionBelow, cx);
5484 assert_eq!(
5485 view.selected_display_ranges(cx),
5486 vec![
5487 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3),
5488 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 3)
5489 ]
5490 );
5491 });
5492
5493 view.update(cx, |view, cx| {
5494 view.add_selection_below(&AddSelectionBelow, cx);
5495 assert_eq!(
5496 view.selected_display_ranges(cx),
5497 vec![
5498 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3),
5499 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 3)
5500 ]
5501 );
5502 });
5503
5504 view.update(cx, |view, cx| {
5505 view.select_display_ranges(&[DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3)], cx)
5506 .unwrap();
5507 });
5508 view.update(cx, |view, cx| {
5509 view.add_selection_below(&AddSelectionBelow, cx);
5510 assert_eq!(
5511 view.selected_display_ranges(cx),
5512 vec![
5513 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
5514 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 3)
5515 ]
5516 );
5517 });
5518
5519 view.update(cx, |view, cx| {
5520 view.add_selection_below(&AddSelectionBelow, cx);
5521 assert_eq!(
5522 view.selected_display_ranges(cx),
5523 vec![
5524 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
5525 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 3)
5526 ]
5527 );
5528 });
5529
5530 view.update(cx, |view, cx| {
5531 view.add_selection_above(&AddSelectionAbove, cx);
5532 assert_eq!(
5533 view.selected_display_ranges(cx),
5534 vec![DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3)]
5535 );
5536 });
5537
5538 view.update(cx, |view, cx| {
5539 view.add_selection_above(&AddSelectionAbove, cx);
5540 assert_eq!(
5541 view.selected_display_ranges(cx),
5542 vec![DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3)]
5543 );
5544 });
5545
5546 view.update(cx, |view, cx| {
5547 view.select_display_ranges(&[DisplayPoint::new(0, 1)..DisplayPoint::new(1, 4)], cx)
5548 .unwrap();
5549 view.add_selection_below(&AddSelectionBelow, cx);
5550 assert_eq!(
5551 view.selected_display_ranges(cx),
5552 vec![
5553 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
5554 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 4),
5555 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 2),
5556 ]
5557 );
5558 });
5559
5560 view.update(cx, |view, cx| {
5561 view.add_selection_below(&AddSelectionBelow, cx);
5562 assert_eq!(
5563 view.selected_display_ranges(cx),
5564 vec![
5565 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
5566 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 4),
5567 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 2),
5568 DisplayPoint::new(4, 1)..DisplayPoint::new(4, 4),
5569 ]
5570 );
5571 });
5572
5573 view.update(cx, |view, cx| {
5574 view.add_selection_above(&AddSelectionAbove, cx);
5575 assert_eq!(
5576 view.selected_display_ranges(cx),
5577 vec![
5578 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
5579 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 4),
5580 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 2),
5581 ]
5582 );
5583 });
5584
5585 view.update(cx, |view, cx| {
5586 view.select_display_ranges(&[DisplayPoint::new(4, 3)..DisplayPoint::new(1, 1)], cx)
5587 .unwrap();
5588 });
5589 view.update(cx, |view, cx| {
5590 view.add_selection_above(&AddSelectionAbove, cx);
5591 assert_eq!(
5592 view.selected_display_ranges(cx),
5593 vec![
5594 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 1),
5595 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 1),
5596 DisplayPoint::new(3, 2)..DisplayPoint::new(3, 1),
5597 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 1),
5598 ]
5599 );
5600 });
5601
5602 view.update(cx, |view, cx| {
5603 view.add_selection_below(&AddSelectionBelow, cx);
5604 assert_eq!(
5605 view.selected_display_ranges(cx),
5606 vec![
5607 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 1),
5608 DisplayPoint::new(3, 2)..DisplayPoint::new(3, 1),
5609 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 1),
5610 ]
5611 );
5612 });
5613 }
5614
5615 #[gpui::test]
5616 async fn test_select_larger_smaller_syntax_node(mut cx: gpui::TestAppContext) {
5617 let settings = cx.read(EditorSettings::test);
5618 let language = Some(Arc::new(Language::new(
5619 LanguageConfig::default(),
5620 Some(tree_sitter_rust::language()),
5621 )));
5622
5623 let text = r#"
5624 use mod1::mod2::{mod3, mod4};
5625
5626 fn fn_1(param1: bool, param2: &str) {
5627 let var1 = "text";
5628 }
5629 "#
5630 .unindent();
5631
5632 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, None, cx));
5633 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
5634 let (_, view) = cx.add_window(|cx| build_editor(buffer, settings, cx));
5635 view.condition(&cx, |view, cx| !view.buffer.read(cx).is_parsing(cx))
5636 .await;
5637
5638 view.update(&mut cx, |view, cx| {
5639 view.select_display_ranges(
5640 &[
5641 DisplayPoint::new(0, 25)..DisplayPoint::new(0, 25),
5642 DisplayPoint::new(2, 24)..DisplayPoint::new(2, 12),
5643 DisplayPoint::new(3, 18)..DisplayPoint::new(3, 18),
5644 ],
5645 cx,
5646 )
5647 .unwrap();
5648 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
5649 });
5650 assert_eq!(
5651 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
5652 &[
5653 DisplayPoint::new(0, 23)..DisplayPoint::new(0, 27),
5654 DisplayPoint::new(2, 35)..DisplayPoint::new(2, 7),
5655 DisplayPoint::new(3, 15)..DisplayPoint::new(3, 21),
5656 ]
5657 );
5658
5659 view.update(&mut cx, |view, cx| {
5660 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
5661 });
5662 assert_eq!(
5663 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
5664 &[
5665 DisplayPoint::new(0, 16)..DisplayPoint::new(0, 28),
5666 DisplayPoint::new(4, 1)..DisplayPoint::new(2, 0),
5667 ]
5668 );
5669
5670 view.update(&mut cx, |view, cx| {
5671 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
5672 });
5673 assert_eq!(
5674 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
5675 &[DisplayPoint::new(5, 0)..DisplayPoint::new(0, 0)]
5676 );
5677
5678 // Trying to expand the selected syntax node one more time has no effect.
5679 view.update(&mut cx, |view, cx| {
5680 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
5681 });
5682 assert_eq!(
5683 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
5684 &[DisplayPoint::new(5, 0)..DisplayPoint::new(0, 0)]
5685 );
5686
5687 view.update(&mut cx, |view, cx| {
5688 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
5689 });
5690 assert_eq!(
5691 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
5692 &[
5693 DisplayPoint::new(0, 16)..DisplayPoint::new(0, 28),
5694 DisplayPoint::new(4, 1)..DisplayPoint::new(2, 0),
5695 ]
5696 );
5697
5698 view.update(&mut cx, |view, cx| {
5699 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
5700 });
5701 assert_eq!(
5702 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
5703 &[
5704 DisplayPoint::new(0, 23)..DisplayPoint::new(0, 27),
5705 DisplayPoint::new(2, 35)..DisplayPoint::new(2, 7),
5706 DisplayPoint::new(3, 15)..DisplayPoint::new(3, 21),
5707 ]
5708 );
5709
5710 view.update(&mut cx, |view, cx| {
5711 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
5712 });
5713 assert_eq!(
5714 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
5715 &[
5716 DisplayPoint::new(0, 25)..DisplayPoint::new(0, 25),
5717 DisplayPoint::new(2, 24)..DisplayPoint::new(2, 12),
5718 DisplayPoint::new(3, 18)..DisplayPoint::new(3, 18),
5719 ]
5720 );
5721
5722 // Trying to shrink the selected syntax node one more time has no effect.
5723 view.update(&mut cx, |view, cx| {
5724 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
5725 });
5726 assert_eq!(
5727 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
5728 &[
5729 DisplayPoint::new(0, 25)..DisplayPoint::new(0, 25),
5730 DisplayPoint::new(2, 24)..DisplayPoint::new(2, 12),
5731 DisplayPoint::new(3, 18)..DisplayPoint::new(3, 18),
5732 ]
5733 );
5734
5735 // Ensure that we keep expanding the selection if the larger selection starts or ends within
5736 // a fold.
5737 view.update(&mut cx, |view, cx| {
5738 view.fold_ranges(
5739 vec![
5740 Point::new(0, 21)..Point::new(0, 24),
5741 Point::new(3, 20)..Point::new(3, 22),
5742 ],
5743 cx,
5744 );
5745 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
5746 });
5747 assert_eq!(
5748 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
5749 &[
5750 DisplayPoint::new(0, 16)..DisplayPoint::new(0, 28),
5751 DisplayPoint::new(2, 35)..DisplayPoint::new(2, 7),
5752 DisplayPoint::new(3, 4)..DisplayPoint::new(3, 23),
5753 ]
5754 );
5755 }
5756
5757 #[gpui::test]
5758 async fn test_autoindent_selections(mut cx: gpui::TestAppContext) {
5759 let settings = cx.read(EditorSettings::test);
5760 let language = Some(Arc::new(
5761 Language::new(
5762 LanguageConfig {
5763 brackets: vec![
5764 BracketPair {
5765 start: "{".to_string(),
5766 end: "}".to_string(),
5767 close: false,
5768 newline: true,
5769 },
5770 BracketPair {
5771 start: "(".to_string(),
5772 end: ")".to_string(),
5773 close: false,
5774 newline: true,
5775 },
5776 ],
5777 ..Default::default()
5778 },
5779 Some(tree_sitter_rust::language()),
5780 )
5781 .with_indents_query(
5782 r#"
5783 (_ "(" ")" @end) @indent
5784 (_ "{" "}" @end) @indent
5785 "#,
5786 )
5787 .unwrap(),
5788 ));
5789
5790 let text = "fn a() {}";
5791
5792 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, None, cx));
5793 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
5794 let (_, editor) = cx.add_window(|cx| build_editor(buffer, settings, cx));
5795 editor
5796 .condition(&cx, |editor, cx| !editor.buffer.read(cx).is_parsing(cx))
5797 .await;
5798
5799 editor.update(&mut cx, |editor, cx| {
5800 editor.select_ranges([5..5, 8..8, 9..9], None, cx);
5801 editor.newline(&Newline, cx);
5802 assert_eq!(editor.text(cx), "fn a(\n \n) {\n \n}\n");
5803 assert_eq!(
5804 editor.selected_ranges(cx),
5805 &[
5806 Point::new(1, 4)..Point::new(1, 4),
5807 Point::new(3, 4)..Point::new(3, 4),
5808 Point::new(5, 0)..Point::new(5, 0)
5809 ]
5810 );
5811 });
5812 }
5813
5814 #[gpui::test]
5815 async fn test_autoclose_pairs(mut cx: gpui::TestAppContext) {
5816 let settings = cx.read(EditorSettings::test);
5817 let language = Some(Arc::new(Language::new(
5818 LanguageConfig {
5819 brackets: vec![
5820 BracketPair {
5821 start: "{".to_string(),
5822 end: "}".to_string(),
5823 close: true,
5824 newline: true,
5825 },
5826 BracketPair {
5827 start: "/*".to_string(),
5828 end: " */".to_string(),
5829 close: true,
5830 newline: true,
5831 },
5832 ],
5833 ..Default::default()
5834 },
5835 Some(tree_sitter_rust::language()),
5836 )));
5837
5838 let text = r#"
5839 a
5840
5841 /
5842
5843 "#
5844 .unindent();
5845
5846 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, None, cx));
5847 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
5848 let (_, view) = cx.add_window(|cx| build_editor(buffer, settings, cx));
5849 view.condition(&cx, |view, cx| !view.buffer.read(cx).is_parsing(cx))
5850 .await;
5851
5852 view.update(&mut cx, |view, cx| {
5853 view.select_display_ranges(
5854 &[
5855 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
5856 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
5857 ],
5858 cx,
5859 )
5860 .unwrap();
5861 view.handle_input(&Input("{".to_string()), cx);
5862 view.handle_input(&Input("{".to_string()), cx);
5863 view.handle_input(&Input("{".to_string()), cx);
5864 assert_eq!(
5865 view.text(cx),
5866 "
5867 {{{}}}
5868 {{{}}}
5869 /
5870
5871 "
5872 .unindent()
5873 );
5874
5875 view.move_right(&MoveRight, cx);
5876 view.handle_input(&Input("}".to_string()), cx);
5877 view.handle_input(&Input("}".to_string()), cx);
5878 view.handle_input(&Input("}".to_string()), cx);
5879 assert_eq!(
5880 view.text(cx),
5881 "
5882 {{{}}}}
5883 {{{}}}}
5884 /
5885
5886 "
5887 .unindent()
5888 );
5889
5890 view.undo(&Undo, cx);
5891 view.handle_input(&Input("/".to_string()), cx);
5892 view.handle_input(&Input("*".to_string()), cx);
5893 assert_eq!(
5894 view.text(cx),
5895 "
5896 /* */
5897 /* */
5898 /
5899
5900 "
5901 .unindent()
5902 );
5903
5904 view.undo(&Undo, cx);
5905 view.select_display_ranges(
5906 &[
5907 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
5908 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
5909 ],
5910 cx,
5911 )
5912 .unwrap();
5913 view.handle_input(&Input("*".to_string()), cx);
5914 assert_eq!(
5915 view.text(cx),
5916 "
5917 a
5918
5919 /*
5920 *
5921 "
5922 .unindent()
5923 );
5924 });
5925 }
5926
5927 #[gpui::test]
5928 async fn test_toggle_comment(mut cx: gpui::TestAppContext) {
5929 let settings = cx.read(EditorSettings::test);
5930 let language = Some(Arc::new(Language::new(
5931 LanguageConfig {
5932 line_comment: Some("// ".to_string()),
5933 ..Default::default()
5934 },
5935 Some(tree_sitter_rust::language()),
5936 )));
5937
5938 let text = "
5939 fn a() {
5940 //b();
5941 // c();
5942 // d();
5943 }
5944 "
5945 .unindent();
5946
5947 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, None, cx));
5948 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
5949 let (_, view) = cx.add_window(|cx| build_editor(buffer, settings, cx));
5950
5951 view.update(&mut cx, |editor, cx| {
5952 // If multiple selections intersect a line, the line is only
5953 // toggled once.
5954 editor
5955 .select_display_ranges(
5956 &[
5957 DisplayPoint::new(1, 3)..DisplayPoint::new(2, 3),
5958 DisplayPoint::new(3, 5)..DisplayPoint::new(3, 6),
5959 ],
5960 cx,
5961 )
5962 .unwrap();
5963 editor.toggle_comments(&ToggleComments, cx);
5964 assert_eq!(
5965 editor.text(cx),
5966 "
5967 fn a() {
5968 b();
5969 c();
5970 d();
5971 }
5972 "
5973 .unindent()
5974 );
5975
5976 // The comment prefix is inserted at the same column for every line
5977 // in a selection.
5978 editor
5979 .select_display_ranges(&[DisplayPoint::new(1, 3)..DisplayPoint::new(3, 6)], cx)
5980 .unwrap();
5981 editor.toggle_comments(&ToggleComments, cx);
5982 assert_eq!(
5983 editor.text(cx),
5984 "
5985 fn a() {
5986 // b();
5987 // c();
5988 // d();
5989 }
5990 "
5991 .unindent()
5992 );
5993
5994 // If a selection ends at the beginning of a line, that line is not toggled.
5995 editor
5996 .select_display_ranges(&[DisplayPoint::new(2, 0)..DisplayPoint::new(3, 0)], cx)
5997 .unwrap();
5998 editor.toggle_comments(&ToggleComments, cx);
5999 assert_eq!(
6000 editor.text(cx),
6001 "
6002 fn a() {
6003 // b();
6004 c();
6005 // d();
6006 }
6007 "
6008 .unindent()
6009 );
6010 });
6011 }
6012
6013 #[gpui::test]
6014 fn test_editing_disjoint_excerpts(cx: &mut gpui::MutableAppContext) {
6015 let settings = EditorSettings::test(cx);
6016 let buffer = cx.add_model(|cx| Buffer::new(0, sample_text(3, 4, 'a'), cx));
6017 let multibuffer = cx.add_model(|cx| {
6018 let mut multibuffer = MultiBuffer::new(0);
6019 multibuffer.push_excerpt(
6020 ExcerptProperties {
6021 buffer: &buffer,
6022 range: Point::new(0, 0)..Point::new(0, 4),
6023 },
6024 cx,
6025 );
6026 multibuffer.push_excerpt(
6027 ExcerptProperties {
6028 buffer: &buffer,
6029 range: Point::new(1, 0)..Point::new(1, 4),
6030 },
6031 cx,
6032 );
6033 multibuffer
6034 });
6035
6036 assert_eq!(multibuffer.read(cx).read(cx).text(), "aaaa\nbbbb");
6037
6038 let (_, view) = cx.add_window(Default::default(), |cx| {
6039 build_editor(multibuffer, settings, cx)
6040 });
6041 view.update(cx, |view, cx| {
6042 view.select_display_ranges(
6043 &[
6044 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
6045 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
6046 ],
6047 cx,
6048 )
6049 .unwrap();
6050
6051 view.handle_input(&Input("X".to_string()), cx);
6052 assert_eq!(view.text(cx), "Xaaaa\nXbbbb");
6053 assert_eq!(
6054 view.selected_display_ranges(cx),
6055 &[
6056 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
6057 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
6058 ]
6059 )
6060 });
6061 }
6062
6063 #[gpui::test]
6064 fn test_editing_overlapping_excerpts(cx: &mut gpui::MutableAppContext) {
6065 let settings = EditorSettings::test(cx);
6066 let buffer = cx.add_model(|cx| Buffer::new(0, sample_text(3, 4, 'a'), cx));
6067 let multibuffer = cx.add_model(|cx| {
6068 let mut multibuffer = MultiBuffer::new(0);
6069 multibuffer.push_excerpt(
6070 ExcerptProperties {
6071 buffer: &buffer,
6072 range: Point::new(0, 0)..Point::new(1, 4),
6073 },
6074 cx,
6075 );
6076 multibuffer.push_excerpt(
6077 ExcerptProperties {
6078 buffer: &buffer,
6079 range: Point::new(1, 0)..Point::new(2, 4),
6080 },
6081 cx,
6082 );
6083 multibuffer
6084 });
6085
6086 assert_eq!(
6087 multibuffer.read(cx).read(cx).text(),
6088 "aaaa\nbbbb\nbbbb\ncccc"
6089 );
6090
6091 let (_, view) = cx.add_window(Default::default(), |cx| {
6092 build_editor(multibuffer, settings, cx)
6093 });
6094 view.update(cx, |view, cx| {
6095 view.select_display_ranges(
6096 &[
6097 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
6098 DisplayPoint::new(2, 3)..DisplayPoint::new(2, 3),
6099 ],
6100 cx,
6101 )
6102 .unwrap();
6103
6104 view.handle_input(&Input("X".to_string()), cx);
6105 assert_eq!(view.text(cx), "aaaa\nbXbbXb\nbXbbXb\ncccc");
6106 assert_eq!(
6107 view.selected_display_ranges(cx),
6108 &[
6109 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
6110 DisplayPoint::new(2, 5)..DisplayPoint::new(2, 5),
6111 ]
6112 )
6113 });
6114 }
6115
6116 #[gpui::test]
6117 async fn test_extra_newline_insertion(mut cx: gpui::TestAppContext) {
6118 let settings = cx.read(EditorSettings::test);
6119 let language = Some(Arc::new(Language::new(
6120 LanguageConfig {
6121 brackets: vec![
6122 BracketPair {
6123 start: "{".to_string(),
6124 end: "}".to_string(),
6125 close: true,
6126 newline: true,
6127 },
6128 BracketPair {
6129 start: "/* ".to_string(),
6130 end: " */".to_string(),
6131 close: true,
6132 newline: true,
6133 },
6134 ],
6135 ..Default::default()
6136 },
6137 Some(tree_sitter_rust::language()),
6138 )));
6139
6140 let text = concat!(
6141 "{ }\n", // Suppress rustfmt
6142 " x\n", //
6143 " /* */\n", //
6144 "x\n", //
6145 "{{} }\n", //
6146 );
6147
6148 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, None, cx));
6149 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
6150 let (_, view) = cx.add_window(|cx| build_editor(buffer, settings, cx));
6151 view.condition(&cx, |view, cx| !view.buffer.read(cx).is_parsing(cx))
6152 .await;
6153
6154 view.update(&mut cx, |view, cx| {
6155 view.select_display_ranges(
6156 &[
6157 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 3),
6158 DisplayPoint::new(2, 5)..DisplayPoint::new(2, 5),
6159 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 4),
6160 ],
6161 cx,
6162 )
6163 .unwrap();
6164 view.newline(&Newline, cx);
6165
6166 assert_eq!(
6167 view.buffer().read(cx).read(cx).text(),
6168 concat!(
6169 "{ \n", // Suppress rustfmt
6170 "\n", //
6171 "}\n", //
6172 " x\n", //
6173 " /* \n", //
6174 " \n", //
6175 " */\n", //
6176 "x\n", //
6177 "{{} \n", //
6178 "}\n", //
6179 )
6180 );
6181 });
6182 }
6183
6184 impl Editor {
6185 fn selected_ranges<D: TextDimension + Ord + Sub<D, Output = D>>(
6186 &self,
6187 cx: &mut MutableAppContext,
6188 ) -> Vec<Range<D>> {
6189 self.local_selections::<D>(cx)
6190 .iter()
6191 .map(|s| {
6192 if s.reversed {
6193 s.end.clone()..s.start.clone()
6194 } else {
6195 s.start.clone()..s.end.clone()
6196 }
6197 })
6198 .collect()
6199 }
6200
6201 fn selected_display_ranges(&self, cx: &mut MutableAppContext) -> Vec<Range<DisplayPoint>> {
6202 let display_map = self
6203 .display_map
6204 .update(cx, |display_map, cx| display_map.snapshot(cx));
6205 self.selections
6206 .iter()
6207 .chain(
6208 self.pending_selection
6209 .as_ref()
6210 .map(|pending| &pending.selection),
6211 )
6212 .map(|s| {
6213 if s.reversed {
6214 s.end.to_display_point(&display_map)..s.start.to_display_point(&display_map)
6215 } else {
6216 s.start.to_display_point(&display_map)..s.end.to_display_point(&display_map)
6217 }
6218 })
6219 .collect()
6220 }
6221 }
6222
6223 fn empty_range(row: usize, column: usize) -> Range<DisplayPoint> {
6224 let point = DisplayPoint::new(row as u32, column as u32);
6225 point..point
6226 }
6227
6228 fn build_editor(
6229 buffer: ModelHandle<MultiBuffer>,
6230 settings: EditorSettings,
6231 cx: &mut ViewContext<Editor>,
6232 ) -> Editor {
6233 Editor::for_buffer(buffer, Arc::new(move |_| settings.clone()), cx)
6234 }
6235}
6236
6237trait RangeExt<T> {
6238 fn sorted(&self) -> Range<T>;
6239 fn to_inclusive(&self) -> RangeInclusive<T>;
6240}
6241
6242impl<T: Ord + Clone> RangeExt<T> for Range<T> {
6243 fn sorted(&self) -> Self {
6244 cmp::min(&self.start, &self.end).clone()..cmp::max(&self.start, &self.end).clone()
6245 }
6246
6247 fn to_inclusive(&self) -> RangeInclusive<T> {
6248 self.start.clone()..=self.end.clone()
6249 }
6250}