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