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, ToOffset, ToPoint};
32use multi_buffer::{AnchorRangeExt, MultiBufferChunks, MultiBufferSnapshot};
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::{PathOpener, 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, path_openers: &mut Vec<Box<dyn PathOpener>>) {
115 path_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: Option<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: Option<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: None,
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 workspace.open_item(BufferItemHandle(buffer), cx);
528 }
529
530 pub fn replica_id(&self, cx: &AppContext) -> ReplicaId {
531 self.buffer.read(cx).replica_id()
532 }
533
534 pub fn buffer(&self) -> &ModelHandle<MultiBuffer> {
535 &self.buffer
536 }
537
538 pub fn snapshot(&mut self, cx: &mut MutableAppContext) -> EditorSnapshot {
539 EditorSnapshot {
540 mode: self.mode,
541 display_snapshot: self.display_map.update(cx, |map, cx| map.snapshot(cx)),
542 scroll_position: self.scroll_position,
543 scroll_top_anchor: self.scroll_top_anchor.clone(),
544 placeholder_text: self.placeholder_text.clone(),
545 is_focused: self
546 .handle
547 .upgrade(cx)
548 .map_or(false, |handle| handle.is_focused(cx)),
549 }
550 }
551
552 pub fn language<'a>(&self, cx: &'a AppContext) -> Option<&'a Arc<Language>> {
553 self.buffer.read(cx).language(cx)
554 }
555
556 pub fn set_placeholder_text(
557 &mut self,
558 placeholder_text: impl Into<Arc<str>>,
559 cx: &mut ViewContext<Self>,
560 ) {
561 self.placeholder_text = Some(placeholder_text.into());
562 cx.notify();
563 }
564
565 pub fn set_scroll_position(&mut self, scroll_position: Vector2F, cx: &mut ViewContext<Self>) {
566 let map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
567
568 if scroll_position.y() == 0. {
569 self.scroll_top_anchor = None;
570 self.scroll_position = scroll_position;
571 } else {
572 let scroll_top_buffer_offset =
573 DisplayPoint::new(scroll_position.y() as u32, 0).to_offset(&map, Bias::Right);
574 let anchor = map
575 .buffer_snapshot
576 .anchor_at(scroll_top_buffer_offset, Bias::Right);
577 self.scroll_position = vec2f(
578 scroll_position.x(),
579 scroll_position.y() - anchor.to_display_point(&map).row() as f32,
580 );
581 self.scroll_top_anchor = Some(anchor);
582 }
583
584 cx.notify();
585 }
586
587 pub fn scroll_position(&self, cx: &mut ViewContext<Self>) -> Vector2F {
588 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
589 compute_scroll_position(&display_map, self.scroll_position, &self.scroll_top_anchor)
590 }
591
592 pub fn clamp_scroll_left(&mut self, max: f32) -> bool {
593 if max < self.scroll_position.x() {
594 self.scroll_position.set_x(max);
595 true
596 } else {
597 false
598 }
599 }
600
601 pub fn autoscroll_vertically(
602 &mut self,
603 viewport_height: f32,
604 line_height: f32,
605 cx: &mut ViewContext<Self>,
606 ) -> bool {
607 let visible_lines = viewport_height / line_height;
608 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
609 let mut scroll_position =
610 compute_scroll_position(&display_map, self.scroll_position, &self.scroll_top_anchor);
611 let max_scroll_top = if matches!(self.mode, EditorMode::AutoHeight { .. }) {
612 (display_map.max_point().row() as f32 - visible_lines + 1.).max(0.)
613 } else {
614 display_map.max_point().row().saturating_sub(1) as f32
615 };
616 if scroll_position.y() > max_scroll_top {
617 scroll_position.set_y(max_scroll_top);
618 self.set_scroll_position(scroll_position, cx);
619 }
620
621 let autoscroll = if let Some(autoscroll) = self.autoscroll_request.take() {
622 autoscroll
623 } else {
624 return false;
625 };
626
627 let first_cursor_top;
628 let last_cursor_bottom;
629 if autoscroll == Autoscroll::Newest {
630 let newest_selection = self.newest_selection::<Point>(&display_map.buffer_snapshot);
631 first_cursor_top = newest_selection.head().to_display_point(&display_map).row() as f32;
632 last_cursor_bottom = first_cursor_top + 1.;
633 } else {
634 let selections = self.local_selections::<Point>(cx);
635 first_cursor_top = selections
636 .first()
637 .unwrap()
638 .head()
639 .to_display_point(&display_map)
640 .row() as f32;
641 last_cursor_bottom = selections
642 .last()
643 .unwrap()
644 .head()
645 .to_display_point(&display_map)
646 .row() as f32
647 + 1.0;
648 }
649
650 let margin = if matches!(self.mode, EditorMode::AutoHeight { .. }) {
651 0.
652 } else {
653 ((visible_lines - (last_cursor_bottom - first_cursor_top)) / 2.0).floor()
654 };
655 if margin < 0.0 {
656 return false;
657 }
658
659 match autoscroll {
660 Autoscroll::Fit | Autoscroll::Newest => {
661 let margin = margin.min(3.0);
662 let target_top = (first_cursor_top - margin).max(0.0);
663 let target_bottom = last_cursor_bottom + margin;
664 let start_row = scroll_position.y();
665 let end_row = start_row + visible_lines;
666
667 if target_top < start_row {
668 scroll_position.set_y(target_top);
669 self.set_scroll_position(scroll_position, cx);
670 } else if target_bottom >= end_row {
671 scroll_position.set_y(target_bottom - visible_lines);
672 self.set_scroll_position(scroll_position, cx);
673 }
674 }
675 Autoscroll::Center => {
676 scroll_position.set_y((first_cursor_top - margin).max(0.0));
677 self.set_scroll_position(scroll_position, cx);
678 }
679 }
680
681 true
682 }
683
684 pub fn autoscroll_horizontally(
685 &mut self,
686 start_row: u32,
687 viewport_width: f32,
688 scroll_width: f32,
689 max_glyph_width: f32,
690 layouts: &[text_layout::Line],
691 cx: &mut ViewContext<Self>,
692 ) -> bool {
693 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
694 let selections = self.local_selections::<Point>(cx);
695 let mut target_left = std::f32::INFINITY;
696 let mut target_right = 0.0_f32;
697 for selection in selections {
698 let head = selection.head().to_display_point(&display_map);
699 if head.row() >= start_row && head.row() < start_row + layouts.len() as u32 {
700 let start_column = head.column().saturating_sub(3);
701 let end_column = cmp::min(display_map.line_len(head.row()), head.column() + 3);
702 target_left = target_left.min(
703 layouts[(head.row() - start_row) as usize].x_for_index(start_column as usize),
704 );
705 target_right = target_right.max(
706 layouts[(head.row() - start_row) as usize].x_for_index(end_column as usize)
707 + max_glyph_width,
708 );
709 }
710 }
711 target_right = target_right.min(scroll_width);
712
713 if target_right - target_left > viewport_width {
714 return false;
715 }
716
717 let scroll_left = self.scroll_position.x() * max_glyph_width;
718 let scroll_right = scroll_left + viewport_width;
719
720 if target_left < scroll_left {
721 self.scroll_position.set_x(target_left / max_glyph_width);
722 true
723 } else if target_right > scroll_right {
724 self.scroll_position
725 .set_x((target_right - viewport_width) / max_glyph_width);
726 true
727 } else {
728 false
729 }
730 }
731
732 fn select(&mut self, Select(phase): &Select, cx: &mut ViewContext<Self>) {
733 match phase {
734 SelectPhase::Begin {
735 position,
736 add,
737 click_count,
738 } => self.begin_selection(*position, *add, *click_count, cx),
739 SelectPhase::BeginColumnar {
740 position,
741 overshoot,
742 } => self.begin_columnar_selection(*position, *overshoot, cx),
743 SelectPhase::Extend {
744 position,
745 click_count,
746 } => self.extend_selection(*position, *click_count, cx),
747 SelectPhase::Update {
748 position,
749 overshoot,
750 scroll_position,
751 } => self.update_selection(*position, *overshoot, *scroll_position, cx),
752 SelectPhase::End => self.end_selection(cx),
753 }
754 }
755
756 fn extend_selection(
757 &mut self,
758 position: DisplayPoint,
759 click_count: usize,
760 cx: &mut ViewContext<Self>,
761 ) {
762 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
763 let tail = self
764 .newest_selection::<usize>(&display_map.buffer_snapshot)
765 .tail();
766 self.begin_selection(position, false, click_count, cx);
767
768 let position = position.to_offset(&display_map, Bias::Left);
769 let tail_anchor = display_map.buffer_snapshot.anchor_before(tail);
770 let pending = self.pending_selection.as_mut().unwrap();
771
772 if position >= tail {
773 pending.selection.start = tail_anchor.clone();
774 } else {
775 pending.selection.end = tail_anchor.clone();
776 pending.selection.reversed = true;
777 }
778
779 match &mut pending.mode {
780 SelectMode::Word(range) | SelectMode::Line(range) => {
781 *range = tail_anchor.clone()..tail_anchor
782 }
783 _ => {}
784 }
785 }
786
787 fn begin_selection(
788 &mut self,
789 position: DisplayPoint,
790 add: bool,
791 click_count: usize,
792 cx: &mut ViewContext<Self>,
793 ) {
794 if !self.focused {
795 cx.focus_self();
796 cx.emit(Event::Activate);
797 }
798
799 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
800 let buffer = &display_map.buffer_snapshot;
801 let start;
802 let end;
803 let mode;
804 match click_count {
805 1 => {
806 start = buffer.anchor_before(position.to_point(&display_map));
807 end = start.clone();
808 mode = SelectMode::Character;
809 }
810 2 => {
811 let range = movement::surrounding_word(&display_map, position);
812 start = buffer.anchor_before(range.start.to_point(&display_map));
813 end = buffer.anchor_before(range.end.to_point(&display_map));
814 mode = SelectMode::Word(start.clone()..end.clone());
815 }
816 3 => {
817 let position = display_map.clip_point(position, Bias::Left);
818 let line_start = movement::line_beginning(&display_map, position, false);
819 let mut next_line_start = line_start.clone();
820 *next_line_start.row_mut() += 1;
821 *next_line_start.column_mut() = 0;
822 next_line_start = display_map.clip_point(next_line_start, Bias::Right);
823
824 start = buffer.anchor_before(line_start.to_point(&display_map));
825 end = buffer.anchor_before(next_line_start.to_point(&display_map));
826 mode = SelectMode::Line(start.clone()..end.clone());
827 }
828 _ => {
829 start = buffer.anchor_before(0);
830 end = buffer.anchor_before(buffer.len());
831 mode = SelectMode::All;
832 }
833 }
834
835 let selection = Selection {
836 id: post_inc(&mut self.next_selection_id),
837 start,
838 end,
839 reversed: false,
840 goal: SelectionGoal::None,
841 };
842
843 if !add {
844 self.update_selections::<usize>(Vec::new(), None, cx);
845 } else if click_count > 1 {
846 // Remove the newest selection since it was only added as part of this multi-click.
847 let newest_selection = self.newest_selection::<usize>(buffer);
848 let mut selections = self.local_selections(cx);
849 selections.retain(|selection| selection.id != newest_selection.id);
850 self.update_selections::<usize>(selections, None, cx)
851 }
852
853 self.pending_selection = Some(PendingSelection { selection, mode });
854
855 cx.notify();
856 }
857
858 fn begin_columnar_selection(
859 &mut self,
860 position: DisplayPoint,
861 overshoot: u32,
862 cx: &mut ViewContext<Self>,
863 ) {
864 if !self.focused {
865 cx.focus_self();
866 cx.emit(Event::Activate);
867 }
868
869 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
870 let tail = self
871 .newest_selection::<Point>(&display_map.buffer_snapshot)
872 .tail();
873 self.columnar_selection_tail = Some(display_map.buffer_snapshot.anchor_before(tail));
874
875 self.select_columns(
876 tail.to_display_point(&display_map),
877 position,
878 overshoot,
879 &display_map,
880 cx,
881 );
882 }
883
884 fn update_selection(
885 &mut self,
886 position: DisplayPoint,
887 overshoot: u32,
888 scroll_position: Vector2F,
889 cx: &mut ViewContext<Self>,
890 ) {
891 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
892
893 if let Some(tail) = self.columnar_selection_tail.as_ref() {
894 let tail = tail.to_display_point(&display_map);
895 self.select_columns(tail, position, overshoot, &display_map, cx);
896 } else if let Some(PendingSelection { selection, mode }) = self.pending_selection.as_mut() {
897 let buffer = self.buffer.read(cx).snapshot(cx);
898 let head;
899 let tail;
900 match mode {
901 SelectMode::Character => {
902 head = position.to_point(&display_map);
903 tail = selection.tail().to_point(&buffer);
904 }
905 SelectMode::Word(original_range) => {
906 let original_display_range = original_range.start.to_display_point(&display_map)
907 ..original_range.end.to_display_point(&display_map);
908 let original_buffer_range = original_display_range.start.to_point(&display_map)
909 ..original_display_range.end.to_point(&display_map);
910 if movement::is_inside_word(&display_map, position)
911 || original_display_range.contains(&position)
912 {
913 let word_range = movement::surrounding_word(&display_map, position);
914 if word_range.start < original_display_range.start {
915 head = word_range.start.to_point(&display_map);
916 } else {
917 head = word_range.end.to_point(&display_map);
918 }
919 } else {
920 head = position.to_point(&display_map);
921 }
922
923 if head <= original_buffer_range.start {
924 tail = original_buffer_range.end;
925 } else {
926 tail = original_buffer_range.start;
927 }
928 }
929 SelectMode::Line(original_range) => {
930 let original_display_range = original_range.start.to_display_point(&display_map)
931 ..original_range.end.to_display_point(&display_map);
932 let original_buffer_range = original_display_range.start.to_point(&display_map)
933 ..original_display_range.end.to_point(&display_map);
934 let line_start = movement::line_beginning(&display_map, position, false);
935 let mut next_line_start = line_start.clone();
936 *next_line_start.row_mut() += 1;
937 *next_line_start.column_mut() = 0;
938 next_line_start = display_map.clip_point(next_line_start, Bias::Right);
939
940 if line_start < original_display_range.start {
941 head = line_start.to_point(&display_map);
942 } else {
943 head = next_line_start.to_point(&display_map);
944 }
945
946 if head <= original_buffer_range.start {
947 tail = original_buffer_range.end;
948 } else {
949 tail = original_buffer_range.start;
950 }
951 }
952 SelectMode::All => {
953 return;
954 }
955 };
956
957 if head < tail {
958 selection.start = buffer.anchor_before(head);
959 selection.end = buffer.anchor_before(tail);
960 selection.reversed = true;
961 } else {
962 selection.start = buffer.anchor_before(tail);
963 selection.end = buffer.anchor_before(head);
964 selection.reversed = false;
965 }
966 } else {
967 log::error!("update_selection dispatched with no pending selection");
968 return;
969 }
970
971 self.set_scroll_position(scroll_position, cx);
972 cx.notify();
973 }
974
975 fn end_selection(&mut self, cx: &mut ViewContext<Self>) {
976 self.columnar_selection_tail.take();
977 if self.pending_selection.is_some() {
978 let selections = self.local_selections::<usize>(cx);
979 self.update_selections(selections, None, cx);
980 }
981 }
982
983 fn select_columns(
984 &mut self,
985 tail: DisplayPoint,
986 head: DisplayPoint,
987 overshoot: u32,
988 display_map: &DisplaySnapshot,
989 cx: &mut ViewContext<Self>,
990 ) {
991 let start_row = cmp::min(tail.row(), head.row());
992 let end_row = cmp::max(tail.row(), head.row());
993 let start_column = cmp::min(tail.column(), head.column() + overshoot);
994 let end_column = cmp::max(tail.column(), head.column() + overshoot);
995 let reversed = start_column < tail.column();
996
997 let selections = (start_row..=end_row)
998 .filter_map(|row| {
999 if start_column <= display_map.line_len(row) && !display_map.is_block_line(row) {
1000 let start = display_map
1001 .clip_point(DisplayPoint::new(row, start_column), Bias::Left)
1002 .to_point(&display_map);
1003 let end = display_map
1004 .clip_point(DisplayPoint::new(row, end_column), Bias::Right)
1005 .to_point(&display_map);
1006 Some(Selection {
1007 id: post_inc(&mut self.next_selection_id),
1008 start,
1009 end,
1010 reversed,
1011 goal: SelectionGoal::None,
1012 })
1013 } else {
1014 None
1015 }
1016 })
1017 .collect::<Vec<_>>();
1018
1019 self.update_selections(selections, None, cx);
1020 cx.notify();
1021 }
1022
1023 pub fn is_selecting(&self) -> bool {
1024 self.pending_selection.is_some() || self.columnar_selection_tail.is_some()
1025 }
1026
1027 pub fn cancel(&mut self, _: &Cancel, cx: &mut ViewContext<Self>) {
1028 if self.active_diagnostics.is_some() {
1029 self.dismiss_diagnostics(cx);
1030 } else if let Some(PendingSelection { selection, .. }) = self.pending_selection.take() {
1031 let buffer = self.buffer.read(cx).snapshot(cx);
1032 let selection = Selection {
1033 id: selection.id,
1034 start: selection.start.to_point(&buffer),
1035 end: selection.end.to_point(&buffer),
1036 reversed: selection.reversed,
1037 goal: selection.goal,
1038 };
1039 if self.local_selections::<Point>(cx).is_empty() {
1040 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
1041 }
1042 } else {
1043 let buffer = self.buffer.read(cx).snapshot(cx);
1044 let mut oldest_selection = self.oldest_selection::<usize>(&buffer);
1045 if self.selection_count() == 1 {
1046 if oldest_selection.is_empty() {
1047 cx.propagate_action();
1048 return;
1049 }
1050
1051 oldest_selection.start = oldest_selection.head().clone();
1052 oldest_selection.end = oldest_selection.head().clone();
1053 }
1054 self.update_selections(vec![oldest_selection], Some(Autoscroll::Fit), cx);
1055 }
1056 }
1057
1058 #[cfg(any(test, feature = "test-support"))]
1059 pub fn selected_ranges<D: TextDimension + Ord + Sub<D, Output = D>>(
1060 &self,
1061 cx: &mut MutableAppContext,
1062 ) -> Vec<Range<D>> {
1063 self.local_selections::<D>(cx)
1064 .iter()
1065 .map(|s| {
1066 if s.reversed {
1067 s.end.clone()..s.start.clone()
1068 } else {
1069 s.start.clone()..s.end.clone()
1070 }
1071 })
1072 .collect()
1073 }
1074
1075 #[cfg(any(test, feature = "test-support"))]
1076 pub fn selected_display_ranges(&self, cx: &mut MutableAppContext) -> Vec<Range<DisplayPoint>> {
1077 let display_map = self
1078 .display_map
1079 .update(cx, |display_map, cx| display_map.snapshot(cx));
1080 self.selections
1081 .iter()
1082 .chain(
1083 self.pending_selection
1084 .as_ref()
1085 .map(|pending| &pending.selection),
1086 )
1087 .map(|s| {
1088 if s.reversed {
1089 s.end.to_display_point(&display_map)..s.start.to_display_point(&display_map)
1090 } else {
1091 s.start.to_display_point(&display_map)..s.end.to_display_point(&display_map)
1092 }
1093 })
1094 .collect()
1095 }
1096
1097 pub fn select_ranges<I, T>(
1098 &mut self,
1099 ranges: I,
1100 autoscroll: Option<Autoscroll>,
1101 cx: &mut ViewContext<Self>,
1102 ) where
1103 I: IntoIterator<Item = Range<T>>,
1104 T: ToOffset,
1105 {
1106 let buffer = self.buffer.read(cx).snapshot(cx);
1107 let mut selections = ranges
1108 .into_iter()
1109 .map(|range| {
1110 let mut start = range.start.to_offset(&buffer);
1111 let mut end = range.end.to_offset(&buffer);
1112 let reversed = if start > end {
1113 mem::swap(&mut start, &mut end);
1114 true
1115 } else {
1116 false
1117 };
1118 Selection {
1119 id: post_inc(&mut self.next_selection_id),
1120 start,
1121 end,
1122 reversed,
1123 goal: SelectionGoal::None,
1124 }
1125 })
1126 .collect::<Vec<_>>();
1127 selections.sort_unstable_by_key(|s| s.start);
1128 self.update_selections(selections, autoscroll, cx);
1129 }
1130
1131 #[cfg(test)]
1132 fn select_display_ranges<'a, T>(
1133 &mut self,
1134 ranges: T,
1135 cx: &mut ViewContext<Self>,
1136 ) -> anyhow::Result<()>
1137 where
1138 T: IntoIterator<Item = &'a Range<DisplayPoint>>,
1139 {
1140 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1141 let selections = ranges
1142 .into_iter()
1143 .map(|range| {
1144 let mut start = range.start;
1145 let mut end = range.end;
1146 let reversed = if start > end {
1147 mem::swap(&mut start, &mut end);
1148 true
1149 } else {
1150 false
1151 };
1152 Selection {
1153 id: post_inc(&mut self.next_selection_id),
1154 start: start.to_point(&display_map),
1155 end: end.to_point(&display_map),
1156 reversed,
1157 goal: SelectionGoal::None,
1158 }
1159 })
1160 .collect();
1161 self.update_selections(selections, None, cx);
1162 Ok(())
1163 }
1164
1165 pub fn handle_input(&mut self, action: &Input, cx: &mut ViewContext<Self>) {
1166 let text = action.0.as_ref();
1167 if !self.skip_autoclose_end(text, cx) {
1168 self.start_transaction(cx);
1169 self.insert(text, cx);
1170 self.autoclose_pairs(cx);
1171 self.end_transaction(cx);
1172 }
1173 }
1174
1175 pub fn newline(&mut self, _: &Newline, cx: &mut ViewContext<Self>) {
1176 self.start_transaction(cx);
1177 let mut old_selections = SmallVec::<[_; 32]>::new();
1178 {
1179 let selections = self.local_selections::<Point>(cx);
1180 let buffer = self.buffer.read(cx).snapshot(cx);
1181 for selection in selections.iter() {
1182 let start_point = selection.start;
1183 let indent = buffer
1184 .indent_column_for_line(start_point.row)
1185 .min(start_point.column);
1186 let start = selection.start.to_offset(&buffer);
1187 let end = selection.end.to_offset(&buffer);
1188
1189 let mut insert_extra_newline = false;
1190 if let Some(language) = buffer.language() {
1191 let leading_whitespace_len = buffer
1192 .reversed_chars_at(start)
1193 .take_while(|c| c.is_whitespace() && *c != '\n')
1194 .map(|c| c.len_utf8())
1195 .sum::<usize>();
1196
1197 let trailing_whitespace_len = buffer
1198 .chars_at(end)
1199 .take_while(|c| c.is_whitespace() && *c != '\n')
1200 .map(|c| c.len_utf8())
1201 .sum::<usize>();
1202
1203 insert_extra_newline = language.brackets().iter().any(|pair| {
1204 let pair_start = pair.start.trim_end();
1205 let pair_end = pair.end.trim_start();
1206
1207 pair.newline
1208 && buffer.contains_str_at(end + trailing_whitespace_len, pair_end)
1209 && buffer.contains_str_at(
1210 (start - leading_whitespace_len).saturating_sub(pair_start.len()),
1211 pair_start,
1212 )
1213 });
1214 }
1215
1216 old_selections.push((selection.id, start..end, indent, insert_extra_newline));
1217 }
1218 }
1219
1220 let mut new_selections = Vec::with_capacity(old_selections.len());
1221 self.buffer.update(cx, |buffer, cx| {
1222 let mut delta = 0_isize;
1223 let mut pending_edit: Option<PendingEdit> = None;
1224 for (_, range, indent, insert_extra_newline) in &old_selections {
1225 if pending_edit.as_ref().map_or(false, |pending| {
1226 pending.indent != *indent
1227 || pending.insert_extra_newline != *insert_extra_newline
1228 }) {
1229 let pending = pending_edit.take().unwrap();
1230 let mut new_text = String::with_capacity(1 + pending.indent as usize);
1231 new_text.push('\n');
1232 new_text.extend(iter::repeat(' ').take(pending.indent as usize));
1233 if pending.insert_extra_newline {
1234 new_text = new_text.repeat(2);
1235 }
1236 buffer.edit_with_autoindent(pending.ranges, new_text, cx);
1237 delta += pending.delta;
1238 }
1239
1240 let start = (range.start as isize + delta) as usize;
1241 let end = (range.end as isize + delta) as usize;
1242 let mut text_len = *indent as usize + 1;
1243 if *insert_extra_newline {
1244 text_len *= 2;
1245 }
1246
1247 let pending = pending_edit.get_or_insert_with(Default::default);
1248 pending.delta += text_len as isize - (end - start) as isize;
1249 pending.indent = *indent;
1250 pending.insert_extra_newline = *insert_extra_newline;
1251 pending.ranges.push(start..end);
1252 }
1253
1254 let pending = pending_edit.unwrap();
1255 let mut new_text = String::with_capacity(1 + pending.indent as usize);
1256 new_text.push('\n');
1257 new_text.extend(iter::repeat(' ').take(pending.indent as usize));
1258 if pending.insert_extra_newline {
1259 new_text = new_text.repeat(2);
1260 }
1261 buffer.edit_with_autoindent(pending.ranges, new_text, cx);
1262
1263 let mut delta = 0_isize;
1264 new_selections.extend(old_selections.into_iter().map(
1265 |(id, range, indent, insert_extra_newline)| {
1266 let start = (range.start as isize + delta) as usize;
1267 let end = (range.end as isize + delta) as usize;
1268 let text_before_cursor_len = indent as usize + 1;
1269 let cursor = start + text_before_cursor_len;
1270 let text_len = if insert_extra_newline {
1271 text_before_cursor_len * 2
1272 } else {
1273 text_before_cursor_len
1274 };
1275 delta += text_len as isize - (end - start) as isize;
1276 Selection {
1277 id,
1278 start: cursor,
1279 end: cursor,
1280 reversed: false,
1281 goal: SelectionGoal::None,
1282 }
1283 },
1284 ))
1285 });
1286
1287 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
1288 self.end_transaction(cx);
1289
1290 #[derive(Default)]
1291 struct PendingEdit {
1292 indent: u32,
1293 insert_extra_newline: bool,
1294 delta: isize,
1295 ranges: SmallVec<[Range<usize>; 32]>,
1296 }
1297 }
1298
1299 pub fn insert(&mut self, text: &str, cx: &mut ViewContext<Self>) {
1300 self.start_transaction(cx);
1301 let old_selections = self.local_selections::<usize>(cx);
1302 self.buffer.update(cx, |buffer, cx| {
1303 let edit_ranges = old_selections.iter().map(|s| s.start..s.end);
1304 buffer.edit_with_autoindent(edit_ranges, text, cx);
1305 });
1306
1307 let selections = self.local_selections::<usize>(cx);
1308 self.update_selections(selections, Some(Autoscroll::Fit), cx);
1309 self.end_transaction(cx);
1310 }
1311
1312 fn autoclose_pairs(&mut self, cx: &mut ViewContext<Self>) {
1313 let selections = self.local_selections::<usize>(cx);
1314 let mut bracket_pair_state = None;
1315 let mut new_selections = None;
1316 self.buffer.update(cx, |buffer, cx| {
1317 let mut snapshot = buffer.snapshot(cx);
1318 let left_biased_selections = selections
1319 .iter()
1320 .map(|selection| Selection {
1321 id: selection.id,
1322 start: snapshot.anchor_before(selection.start),
1323 end: snapshot.anchor_before(selection.end),
1324 reversed: selection.reversed,
1325 goal: selection.goal,
1326 })
1327 .collect::<Vec<_>>();
1328
1329 let autoclose_pair = snapshot.language().and_then(|language| {
1330 let first_selection_start = selections.first().unwrap().start;
1331 let pair = language.brackets().iter().find(|pair| {
1332 snapshot.contains_str_at(
1333 first_selection_start.saturating_sub(pair.start.len()),
1334 &pair.start,
1335 )
1336 });
1337 pair.and_then(|pair| {
1338 let should_autoclose = selections[1..].iter().all(|selection| {
1339 snapshot.contains_str_at(
1340 selection.start.saturating_sub(pair.start.len()),
1341 &pair.start,
1342 )
1343 });
1344
1345 if should_autoclose {
1346 Some(pair.clone())
1347 } else {
1348 None
1349 }
1350 })
1351 });
1352
1353 if let Some(pair) = autoclose_pair {
1354 let selection_ranges = selections
1355 .iter()
1356 .map(|selection| {
1357 let start = selection.start.to_offset(&snapshot);
1358 start..start
1359 })
1360 .collect::<SmallVec<[_; 32]>>();
1361
1362 buffer.edit(selection_ranges, &pair.end, cx);
1363 snapshot = buffer.snapshot(cx);
1364
1365 new_selections = Some(
1366 self.resolve_selections::<usize, _>(left_biased_selections.iter(), &snapshot)
1367 .collect::<Vec<_>>(),
1368 );
1369
1370 if pair.end.len() == 1 {
1371 let mut delta = 0;
1372 bracket_pair_state = Some(BracketPairState {
1373 ranges: selections
1374 .iter()
1375 .map(move |selection| {
1376 let offset = selection.start + delta;
1377 delta += 1;
1378 snapshot.anchor_before(offset)..snapshot.anchor_after(offset)
1379 })
1380 .collect(),
1381 pair,
1382 });
1383 }
1384 }
1385 });
1386
1387 if let Some(new_selections) = new_selections {
1388 self.update_selections(new_selections, None, cx);
1389 }
1390 if let Some(bracket_pair_state) = bracket_pair_state {
1391 self.autoclose_stack.push(bracket_pair_state);
1392 }
1393 }
1394
1395 fn skip_autoclose_end(&mut self, text: &str, cx: &mut ViewContext<Self>) -> bool {
1396 let old_selections = self.local_selections::<usize>(cx);
1397 let autoclose_pair = if let Some(autoclose_pair) = self.autoclose_stack.last() {
1398 autoclose_pair
1399 } else {
1400 return false;
1401 };
1402 if text != autoclose_pair.pair.end {
1403 return false;
1404 }
1405
1406 debug_assert_eq!(old_selections.len(), autoclose_pair.ranges.len());
1407
1408 let buffer = self.buffer.read(cx).snapshot(cx);
1409 if old_selections
1410 .iter()
1411 .zip(autoclose_pair.ranges.iter().map(|r| r.to_offset(&buffer)))
1412 .all(|(selection, autoclose_range)| {
1413 let autoclose_range_end = autoclose_range.end.to_offset(&buffer);
1414 selection.is_empty() && selection.start == autoclose_range_end
1415 })
1416 {
1417 let new_selections = old_selections
1418 .into_iter()
1419 .map(|selection| {
1420 let cursor = selection.start + 1;
1421 Selection {
1422 id: selection.id,
1423 start: cursor,
1424 end: cursor,
1425 reversed: false,
1426 goal: SelectionGoal::None,
1427 }
1428 })
1429 .collect();
1430 self.autoclose_stack.pop();
1431 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
1432 true
1433 } else {
1434 false
1435 }
1436 }
1437
1438 pub fn clear(&mut self, cx: &mut ViewContext<Self>) {
1439 self.start_transaction(cx);
1440 self.select_all(&SelectAll, cx);
1441 self.insert("", cx);
1442 self.end_transaction(cx);
1443 }
1444
1445 pub fn backspace(&mut self, _: &Backspace, cx: &mut ViewContext<Self>) {
1446 self.start_transaction(cx);
1447 let mut selections = self.local_selections::<Point>(cx);
1448 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1449 for selection in &mut selections {
1450 if selection.is_empty() {
1451 let head = selection.head().to_display_point(&display_map);
1452 let cursor = movement::left(&display_map, head)
1453 .unwrap()
1454 .to_point(&display_map);
1455 selection.set_head(cursor);
1456 selection.goal = SelectionGoal::None;
1457 }
1458 }
1459 self.update_selections(selections, Some(Autoscroll::Fit), cx);
1460 self.insert("", cx);
1461 self.end_transaction(cx);
1462 }
1463
1464 pub fn delete(&mut self, _: &Delete, cx: &mut ViewContext<Self>) {
1465 self.start_transaction(cx);
1466 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1467 let mut selections = self.local_selections::<Point>(cx);
1468 for selection in &mut selections {
1469 if selection.is_empty() {
1470 let head = selection.head().to_display_point(&display_map);
1471 let cursor = movement::right(&display_map, head)
1472 .unwrap()
1473 .to_point(&display_map);
1474 selection.set_head(cursor);
1475 selection.goal = SelectionGoal::None;
1476 }
1477 }
1478 self.update_selections(selections, Some(Autoscroll::Fit), cx);
1479 self.insert(&"", cx);
1480 self.end_transaction(cx);
1481 }
1482
1483 pub fn tab(&mut self, _: &Tab, cx: &mut ViewContext<Self>) {
1484 self.start_transaction(cx);
1485 let tab_size = (self.build_settings)(cx).tab_size;
1486 let mut selections = self.local_selections::<Point>(cx);
1487 let mut last_indent = None;
1488 self.buffer.update(cx, |buffer, cx| {
1489 for selection in &mut selections {
1490 if selection.is_empty() {
1491 let char_column = buffer
1492 .read(cx)
1493 .text_for_range(Point::new(selection.start.row, 0)..selection.start)
1494 .flat_map(str::chars)
1495 .count();
1496 let chars_to_next_tab_stop = tab_size - (char_column % tab_size);
1497 buffer.edit(
1498 [selection.start..selection.start],
1499 " ".repeat(chars_to_next_tab_stop),
1500 cx,
1501 );
1502 selection.start.column += chars_to_next_tab_stop as u32;
1503 selection.end = selection.start;
1504 } else {
1505 let mut start_row = selection.start.row;
1506 let mut end_row = selection.end.row + 1;
1507
1508 // If a selection ends at the beginning of a line, don't indent
1509 // that last line.
1510 if selection.end.column == 0 {
1511 end_row -= 1;
1512 }
1513
1514 // Avoid re-indenting a row that has already been indented by a
1515 // previous selection, but still update this selection's column
1516 // to reflect that indentation.
1517 if let Some((last_indent_row, last_indent_len)) = last_indent {
1518 if last_indent_row == selection.start.row {
1519 selection.start.column += last_indent_len;
1520 start_row += 1;
1521 }
1522 if last_indent_row == selection.end.row {
1523 selection.end.column += last_indent_len;
1524 }
1525 }
1526
1527 for row in start_row..end_row {
1528 let indent_column = buffer.read(cx).indent_column_for_line(row) as usize;
1529 let columns_to_next_tab_stop = tab_size - (indent_column % tab_size);
1530 let row_start = Point::new(row, 0);
1531 buffer.edit(
1532 [row_start..row_start],
1533 " ".repeat(columns_to_next_tab_stop),
1534 cx,
1535 );
1536
1537 // Update this selection's endpoints to reflect the indentation.
1538 if row == selection.start.row {
1539 selection.start.column += columns_to_next_tab_stop as u32;
1540 }
1541 if row == selection.end.row {
1542 selection.end.column += columns_to_next_tab_stop as u32;
1543 }
1544
1545 last_indent = Some((row, columns_to_next_tab_stop as u32));
1546 }
1547 }
1548 }
1549 });
1550
1551 self.update_selections(selections, Some(Autoscroll::Fit), cx);
1552 self.end_transaction(cx);
1553 }
1554
1555 pub fn outdent(&mut self, _: &Outdent, cx: &mut ViewContext<Self>) {
1556 self.start_transaction(cx);
1557 let tab_size = (self.build_settings)(cx).tab_size;
1558 let selections = self.local_selections::<Point>(cx);
1559 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1560 let mut deletion_ranges = Vec::new();
1561 let mut last_outdent = None;
1562 {
1563 let buffer = self.buffer.read(cx).read(cx);
1564 for selection in &selections {
1565 let mut rows = selection.spanned_rows(false, &display_map);
1566
1567 // Avoid re-outdenting a row that has already been outdented by a
1568 // previous selection.
1569 if let Some(last_row) = last_outdent {
1570 if last_row == rows.start {
1571 rows.start += 1;
1572 }
1573 }
1574
1575 for row in rows {
1576 let column = buffer.indent_column_for_line(row) as usize;
1577 if column > 0 {
1578 let mut deletion_len = (column % tab_size) as u32;
1579 if deletion_len == 0 {
1580 deletion_len = tab_size as u32;
1581 }
1582 deletion_ranges.push(Point::new(row, 0)..Point::new(row, deletion_len));
1583 last_outdent = Some(row);
1584 }
1585 }
1586 }
1587 }
1588 self.buffer.update(cx, |buffer, cx| {
1589 buffer.edit(deletion_ranges, "", cx);
1590 });
1591
1592 self.update_selections(
1593 self.local_selections::<usize>(cx),
1594 Some(Autoscroll::Fit),
1595 cx,
1596 );
1597 self.end_transaction(cx);
1598 }
1599
1600 pub fn delete_line(&mut self, _: &DeleteLine, cx: &mut ViewContext<Self>) {
1601 self.start_transaction(cx);
1602
1603 let selections = self.local_selections::<Point>(cx);
1604 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1605 let buffer = self.buffer.read(cx).snapshot(cx);
1606
1607 let mut new_cursors = Vec::new();
1608 let mut edit_ranges = Vec::new();
1609 let mut selections = selections.iter().peekable();
1610 while let Some(selection) = selections.next() {
1611 let mut rows = selection.spanned_rows(false, &display_map);
1612 let goal_display_column = selection.head().to_display_point(&display_map).column();
1613
1614 // Accumulate contiguous regions of rows that we want to delete.
1615 while let Some(next_selection) = selections.peek() {
1616 let next_rows = next_selection.spanned_rows(false, &display_map);
1617 if next_rows.start <= rows.end {
1618 rows.end = next_rows.end;
1619 selections.next().unwrap();
1620 } else {
1621 break;
1622 }
1623 }
1624
1625 let mut edit_start = Point::new(rows.start, 0).to_offset(&buffer);
1626 let edit_end;
1627 let cursor_buffer_row;
1628 if buffer.max_point().row >= rows.end {
1629 // If there's a line after the range, delete the \n from the end of the row range
1630 // and position the cursor on the next line.
1631 edit_end = Point::new(rows.end, 0).to_offset(&buffer);
1632 cursor_buffer_row = rows.end;
1633 } else {
1634 // If there isn't a line after the range, delete the \n from the line before the
1635 // start of the row range and position the cursor there.
1636 edit_start = edit_start.saturating_sub(1);
1637 edit_end = buffer.len();
1638 cursor_buffer_row = rows.start.saturating_sub(1);
1639 }
1640
1641 let mut cursor = Point::new(cursor_buffer_row, 0).to_display_point(&display_map);
1642 *cursor.column_mut() =
1643 cmp::min(goal_display_column, display_map.line_len(cursor.row()));
1644
1645 new_cursors.push((
1646 selection.id,
1647 buffer.anchor_after(cursor.to_point(&display_map)),
1648 ));
1649 edit_ranges.push(edit_start..edit_end);
1650 }
1651
1652 new_cursors.sort_unstable_by(|a, b| a.1.cmp(&b.1, &buffer).unwrap());
1653 let buffer = self.buffer.update(cx, |buffer, cx| {
1654 buffer.edit(edit_ranges, "", cx);
1655 buffer.snapshot(cx)
1656 });
1657 let new_selections = new_cursors
1658 .into_iter()
1659 .map(|(id, cursor)| {
1660 let cursor = cursor.to_point(&buffer);
1661 Selection {
1662 id,
1663 start: cursor,
1664 end: cursor,
1665 reversed: false,
1666 goal: SelectionGoal::None,
1667 }
1668 })
1669 .collect();
1670 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
1671 self.end_transaction(cx);
1672 }
1673
1674 pub fn duplicate_line(&mut self, _: &DuplicateLine, cx: &mut ViewContext<Self>) {
1675 self.start_transaction(cx);
1676
1677 let selections = self.local_selections::<Point>(cx);
1678 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1679 let buffer = &display_map.buffer_snapshot;
1680
1681 let mut edits = Vec::new();
1682 let mut selections_iter = selections.iter().peekable();
1683 while let Some(selection) = selections_iter.next() {
1684 // Avoid duplicating the same lines twice.
1685 let mut rows = selection.spanned_rows(false, &display_map);
1686
1687 while let Some(next_selection) = selections_iter.peek() {
1688 let next_rows = next_selection.spanned_rows(false, &display_map);
1689 if next_rows.start <= rows.end - 1 {
1690 rows.end = next_rows.end;
1691 selections_iter.next().unwrap();
1692 } else {
1693 break;
1694 }
1695 }
1696
1697 // Copy the text from the selected row region and splice it at the start of the region.
1698 let start = Point::new(rows.start, 0);
1699 let end = Point::new(rows.end - 1, buffer.line_len(rows.end - 1));
1700 let text = buffer
1701 .text_for_range(start..end)
1702 .chain(Some("\n"))
1703 .collect::<String>();
1704 edits.push((start, text, rows.len() as u32));
1705 }
1706
1707 self.buffer.update(cx, |buffer, cx| {
1708 for (point, text, _) in edits.into_iter().rev() {
1709 buffer.edit(Some(point..point), text, cx);
1710 }
1711 });
1712
1713 self.request_autoscroll(Autoscroll::Fit, cx);
1714 self.end_transaction(cx);
1715 }
1716
1717 pub fn move_line_up(&mut self, _: &MoveLineUp, cx: &mut ViewContext<Self>) {
1718 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1719 let buffer = self.buffer.read(cx).snapshot(cx);
1720
1721 let mut edits = Vec::new();
1722 let mut unfold_ranges = Vec::new();
1723 let mut refold_ranges = Vec::new();
1724
1725 let selections = self.local_selections::<Point>(cx);
1726 let mut selections = selections.iter().peekable();
1727 let mut contiguous_row_selections = Vec::new();
1728 let mut new_selections = Vec::new();
1729
1730 while let Some(selection) = selections.next() {
1731 // Find all the selections that span a contiguous row range
1732 contiguous_row_selections.push(selection.clone());
1733 let start_row = selection.start.row;
1734 let mut end_row = if selection.end.column > 0 || selection.is_empty() {
1735 display_map.next_line_boundary(selection.end).0.row + 1
1736 } else {
1737 selection.end.row
1738 };
1739
1740 while let Some(next_selection) = selections.peek() {
1741 if next_selection.start.row <= end_row {
1742 end_row = if next_selection.end.column > 0 || next_selection.is_empty() {
1743 display_map.next_line_boundary(next_selection.end).0.row + 1
1744 } else {
1745 next_selection.end.row
1746 };
1747 contiguous_row_selections.push(selections.next().unwrap().clone());
1748 } else {
1749 break;
1750 }
1751 }
1752
1753 // Move the text spanned by the row range to be before the line preceding the row range
1754 if start_row > 0 {
1755 let range_to_move = Point::new(start_row - 1, buffer.line_len(start_row - 1))
1756 ..Point::new(end_row - 1, buffer.line_len(end_row - 1));
1757 let insertion_point = display_map
1758 .prev_line_boundary(Point::new(start_row - 1, 0))
1759 .0;
1760
1761 // Don't move lines across excerpts
1762 if !buffer.range_contains_excerpt_boundary(insertion_point..range_to_move.end) {
1763 let text = buffer
1764 .text_for_range(range_to_move.clone())
1765 .flat_map(|s| s.chars())
1766 .skip(1)
1767 .chain(['\n'])
1768 .collect::<String>();
1769
1770 edits.push((
1771 buffer.anchor_after(range_to_move.start)
1772 ..buffer.anchor_before(range_to_move.end),
1773 String::new(),
1774 ));
1775 let insertion_anchor = buffer.anchor_after(insertion_point);
1776 edits.push((insertion_anchor.clone()..insertion_anchor, text));
1777
1778 let row_delta = range_to_move.start.row - insertion_point.row + 1;
1779
1780 // Move selections up
1781 new_selections.extend(contiguous_row_selections.drain(..).map(
1782 |mut selection| {
1783 selection.start.row -= row_delta;
1784 selection.end.row -= row_delta;
1785 selection
1786 },
1787 ));
1788
1789 // Move folds up
1790 unfold_ranges.push(range_to_move.clone());
1791 for fold in display_map.folds_in_range(
1792 buffer.anchor_before(range_to_move.start)
1793 ..buffer.anchor_after(range_to_move.end),
1794 ) {
1795 let mut start = fold.start.to_point(&buffer);
1796 let mut end = fold.end.to_point(&buffer);
1797 start.row -= row_delta;
1798 end.row -= row_delta;
1799 refold_ranges.push(start..end);
1800 }
1801 }
1802 }
1803
1804 // If we didn't move line(s), preserve the existing selections
1805 new_selections.extend(contiguous_row_selections.drain(..));
1806 }
1807
1808 self.start_transaction(cx);
1809 self.unfold_ranges(unfold_ranges, cx);
1810 self.buffer.update(cx, |buffer, cx| {
1811 for (range, text) in edits {
1812 buffer.edit([range], text, cx);
1813 }
1814 });
1815 self.fold_ranges(refold_ranges, cx);
1816 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
1817 self.end_transaction(cx);
1818 }
1819
1820 pub fn move_line_down(&mut self, _: &MoveLineDown, cx: &mut ViewContext<Self>) {
1821 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
1822 let buffer = self.buffer.read(cx).snapshot(cx);
1823
1824 let mut edits = Vec::new();
1825 let mut unfold_ranges = Vec::new();
1826 let mut refold_ranges = Vec::new();
1827
1828 let selections = self.local_selections::<Point>(cx);
1829 let mut selections = selections.iter().peekable();
1830 let mut contiguous_row_selections = Vec::new();
1831 let mut new_selections = Vec::new();
1832
1833 while let Some(selection) = selections.next() {
1834 // Find all the selections that span a contiguous row range
1835 contiguous_row_selections.push(selection.clone());
1836 let start_row = selection.start.row;
1837 let mut end_row = if selection.end.column > 0 || selection.is_empty() {
1838 display_map.next_line_boundary(selection.end).0.row + 1
1839 } else {
1840 selection.end.row
1841 };
1842
1843 while let Some(next_selection) = selections.peek() {
1844 if next_selection.start.row <= end_row {
1845 end_row = if next_selection.end.column > 0 || next_selection.is_empty() {
1846 display_map.next_line_boundary(next_selection.end).0.row + 1
1847 } else {
1848 next_selection.end.row
1849 };
1850 contiguous_row_selections.push(selections.next().unwrap().clone());
1851 } else {
1852 break;
1853 }
1854 }
1855
1856 // Move the text spanned by the row range to be after the last line of the row range
1857 if end_row <= buffer.max_point().row {
1858 let range_to_move = Point::new(start_row, 0)..Point::new(end_row, 0);
1859 let insertion_point = display_map.next_line_boundary(Point::new(end_row, 0)).0;
1860
1861 // Don't move lines across excerpt boundaries
1862 if !buffer.range_contains_excerpt_boundary(range_to_move.start..insertion_point) {
1863 let mut text = String::from("\n");
1864 text.extend(buffer.text_for_range(range_to_move.clone()));
1865 text.pop(); // Drop trailing newline
1866 edits.push((
1867 buffer.anchor_after(range_to_move.start)
1868 ..buffer.anchor_before(range_to_move.end),
1869 String::new(),
1870 ));
1871 let insertion_anchor = buffer.anchor_after(insertion_point);
1872 edits.push((insertion_anchor.clone()..insertion_anchor, text));
1873
1874 let row_delta = insertion_point.row - range_to_move.end.row + 1;
1875
1876 // Move selections down
1877 new_selections.extend(contiguous_row_selections.drain(..).map(
1878 |mut selection| {
1879 selection.start.row += row_delta;
1880 selection.end.row += row_delta;
1881 selection
1882 },
1883 ));
1884
1885 // Move folds down
1886 unfold_ranges.push(range_to_move.clone());
1887 for fold in display_map.folds_in_range(
1888 buffer.anchor_before(range_to_move.start)
1889 ..buffer.anchor_after(range_to_move.end),
1890 ) {
1891 let mut start = fold.start.to_point(&buffer);
1892 let mut end = fold.end.to_point(&buffer);
1893 start.row += row_delta;
1894 end.row += row_delta;
1895 refold_ranges.push(start..end);
1896 }
1897 }
1898 }
1899
1900 // If we didn't move line(s), preserve the existing selections
1901 new_selections.extend(contiguous_row_selections.drain(..));
1902 }
1903
1904 self.start_transaction(cx);
1905 self.unfold_ranges(unfold_ranges, cx);
1906 self.buffer.update(cx, |buffer, cx| {
1907 for (range, text) in edits {
1908 buffer.edit([range], text, cx);
1909 }
1910 });
1911 self.fold_ranges(refold_ranges, cx);
1912 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
1913 self.end_transaction(cx);
1914 }
1915
1916 pub fn cut(&mut self, _: &Cut, cx: &mut ViewContext<Self>) {
1917 self.start_transaction(cx);
1918 let mut text = String::new();
1919 let mut selections = self.local_selections::<Point>(cx);
1920 let mut clipboard_selections = Vec::with_capacity(selections.len());
1921 {
1922 let buffer = self.buffer.read(cx).read(cx);
1923 let max_point = buffer.max_point();
1924 for selection in &mut selections {
1925 let is_entire_line = selection.is_empty();
1926 if is_entire_line {
1927 selection.start = Point::new(selection.start.row, 0);
1928 selection.end = cmp::min(max_point, Point::new(selection.end.row + 1, 0));
1929 }
1930 let mut len = 0;
1931 for chunk in buffer.text_for_range(selection.start..selection.end) {
1932 text.push_str(chunk);
1933 len += chunk.len();
1934 }
1935 clipboard_selections.push(ClipboardSelection {
1936 len,
1937 is_entire_line,
1938 });
1939 }
1940 }
1941 self.update_selections(selections, Some(Autoscroll::Fit), cx);
1942 self.insert("", cx);
1943 self.end_transaction(cx);
1944
1945 cx.as_mut()
1946 .write_to_clipboard(ClipboardItem::new(text).with_metadata(clipboard_selections));
1947 }
1948
1949 pub fn copy(&mut self, _: &Copy, cx: &mut ViewContext<Self>) {
1950 let selections = self.local_selections::<Point>(cx);
1951 let mut text = String::new();
1952 let mut clipboard_selections = Vec::with_capacity(selections.len());
1953 {
1954 let buffer = self.buffer.read(cx).read(cx);
1955 let max_point = buffer.max_point();
1956 for selection in selections.iter() {
1957 let mut start = selection.start;
1958 let mut end = selection.end;
1959 let is_entire_line = selection.is_empty();
1960 if is_entire_line {
1961 start = Point::new(start.row, 0);
1962 end = cmp::min(max_point, Point::new(start.row + 1, 0));
1963 }
1964 let mut len = 0;
1965 for chunk in buffer.text_for_range(start..end) {
1966 text.push_str(chunk);
1967 len += chunk.len();
1968 }
1969 clipboard_selections.push(ClipboardSelection {
1970 len,
1971 is_entire_line,
1972 });
1973 }
1974 }
1975
1976 cx.as_mut()
1977 .write_to_clipboard(ClipboardItem::new(text).with_metadata(clipboard_selections));
1978 }
1979
1980 pub fn paste(&mut self, _: &Paste, cx: &mut ViewContext<Self>) {
1981 if let Some(item) = cx.as_mut().read_from_clipboard() {
1982 let clipboard_text = item.text();
1983 if let Some(mut clipboard_selections) = item.metadata::<Vec<ClipboardSelection>>() {
1984 let mut selections = self.local_selections::<usize>(cx);
1985 let all_selections_were_entire_line =
1986 clipboard_selections.iter().all(|s| s.is_entire_line);
1987 if clipboard_selections.len() != selections.len() {
1988 clipboard_selections.clear();
1989 }
1990
1991 let mut delta = 0_isize;
1992 let mut start_offset = 0;
1993 for (i, selection) in selections.iter_mut().enumerate() {
1994 let to_insert;
1995 let entire_line;
1996 if let Some(clipboard_selection) = clipboard_selections.get(i) {
1997 let end_offset = start_offset + clipboard_selection.len;
1998 to_insert = &clipboard_text[start_offset..end_offset];
1999 entire_line = clipboard_selection.is_entire_line;
2000 start_offset = end_offset
2001 } else {
2002 to_insert = clipboard_text.as_str();
2003 entire_line = all_selections_were_entire_line;
2004 }
2005
2006 selection.start = (selection.start as isize + delta) as usize;
2007 selection.end = (selection.end as isize + delta) as usize;
2008
2009 self.buffer.update(cx, |buffer, cx| {
2010 // If the corresponding selection was empty when this slice of the
2011 // clipboard text was written, then the entire line containing the
2012 // selection was copied. If this selection is also currently empty,
2013 // then paste the line before the current line of the buffer.
2014 let range = if selection.is_empty() && entire_line {
2015 let column = selection.start.to_point(&buffer.read(cx)).column as usize;
2016 let line_start = selection.start - column;
2017 line_start..line_start
2018 } else {
2019 selection.start..selection.end
2020 };
2021
2022 delta += to_insert.len() as isize - range.len() as isize;
2023 buffer.edit([range], to_insert, cx);
2024 selection.start += to_insert.len();
2025 selection.end = selection.start;
2026 });
2027 }
2028 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2029 } else {
2030 self.insert(clipboard_text, cx);
2031 }
2032 }
2033 }
2034
2035 pub fn undo(&mut self, _: &Undo, cx: &mut ViewContext<Self>) {
2036 if let Some(tx_id) = self.buffer.update(cx, |buffer, cx| buffer.undo(cx)) {
2037 if let Some((selections, _)) = self.selection_history.get(&tx_id).cloned() {
2038 self.set_selections(selections, cx);
2039 }
2040 self.request_autoscroll(Autoscroll::Fit, cx);
2041 }
2042 }
2043
2044 pub fn redo(&mut self, _: &Redo, cx: &mut ViewContext<Self>) {
2045 if let Some(tx_id) = self.buffer.update(cx, |buffer, cx| buffer.redo(cx)) {
2046 if let Some((_, Some(selections))) = self.selection_history.get(&tx_id).cloned() {
2047 self.set_selections(selections, cx);
2048 }
2049 self.request_autoscroll(Autoscroll::Fit, cx);
2050 }
2051 }
2052
2053 pub fn move_left(&mut self, _: &MoveLeft, cx: &mut ViewContext<Self>) {
2054 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2055 let mut selections = self.local_selections::<Point>(cx);
2056 for selection in &mut selections {
2057 let start = selection.start.to_display_point(&display_map);
2058 let end = selection.end.to_display_point(&display_map);
2059
2060 if start != end {
2061 selection.end = selection.start.clone();
2062 } else {
2063 let cursor = movement::left(&display_map, start)
2064 .unwrap()
2065 .to_point(&display_map);
2066 selection.start = cursor.clone();
2067 selection.end = cursor;
2068 }
2069 selection.reversed = false;
2070 selection.goal = SelectionGoal::None;
2071 }
2072 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2073 }
2074
2075 pub fn select_left(&mut self, _: &SelectLeft, cx: &mut ViewContext<Self>) {
2076 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2077 let mut selections = self.local_selections::<Point>(cx);
2078 for selection in &mut selections {
2079 let head = selection.head().to_display_point(&display_map);
2080 let cursor = movement::left(&display_map, head)
2081 .unwrap()
2082 .to_point(&display_map);
2083 selection.set_head(cursor);
2084 selection.goal = SelectionGoal::None;
2085 }
2086 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2087 }
2088
2089 pub fn move_right(&mut self, _: &MoveRight, cx: &mut ViewContext<Self>) {
2090 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2091 let mut selections = self.local_selections::<Point>(cx);
2092 for selection in &mut selections {
2093 let start = selection.start.to_display_point(&display_map);
2094 let end = selection.end.to_display_point(&display_map);
2095
2096 if start != end {
2097 selection.start = selection.end.clone();
2098 } else {
2099 let cursor = movement::right(&display_map, end)
2100 .unwrap()
2101 .to_point(&display_map);
2102 selection.start = cursor;
2103 selection.end = cursor;
2104 }
2105 selection.reversed = false;
2106 selection.goal = SelectionGoal::None;
2107 }
2108 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2109 }
2110
2111 pub fn select_right(&mut self, _: &SelectRight, cx: &mut ViewContext<Self>) {
2112 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2113 let mut selections = self.local_selections::<Point>(cx);
2114 for selection in &mut selections {
2115 let head = selection.head().to_display_point(&display_map);
2116 let cursor = movement::right(&display_map, head)
2117 .unwrap()
2118 .to_point(&display_map);
2119 selection.set_head(cursor);
2120 selection.goal = SelectionGoal::None;
2121 }
2122 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2123 }
2124
2125 pub fn move_up(&mut self, _: &MoveUp, cx: &mut ViewContext<Self>) {
2126 if matches!(self.mode, EditorMode::SingleLine) {
2127 cx.propagate_action();
2128 return;
2129 }
2130
2131 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2132 let mut selections = self.local_selections::<Point>(cx);
2133 for selection in &mut selections {
2134 let start = selection.start.to_display_point(&display_map);
2135 let end = selection.end.to_display_point(&display_map);
2136 if start != end {
2137 selection.goal = SelectionGoal::None;
2138 }
2139
2140 let (start, goal) = movement::up(&display_map, start, selection.goal).unwrap();
2141 let cursor = start.to_point(&display_map);
2142 selection.start = cursor;
2143 selection.end = cursor;
2144 selection.goal = goal;
2145 selection.reversed = false;
2146 }
2147 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2148 }
2149
2150 pub fn select_up(&mut self, _: &SelectUp, cx: &mut ViewContext<Self>) {
2151 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2152 let mut selections = self.local_selections::<Point>(cx);
2153 for selection in &mut selections {
2154 let head = selection.head().to_display_point(&display_map);
2155 let (head, goal) = movement::up(&display_map, head, selection.goal).unwrap();
2156 let cursor = head.to_point(&display_map);
2157 selection.set_head(cursor);
2158 selection.goal = goal;
2159 }
2160 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2161 }
2162
2163 pub fn move_down(&mut self, _: &MoveDown, cx: &mut ViewContext<Self>) {
2164 if matches!(self.mode, EditorMode::SingleLine) {
2165 cx.propagate_action();
2166 return;
2167 }
2168
2169 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2170 let mut selections = self.local_selections::<Point>(cx);
2171 for selection in &mut selections {
2172 let start = selection.start.to_display_point(&display_map);
2173 let end = selection.end.to_display_point(&display_map);
2174 if start != end {
2175 selection.goal = SelectionGoal::None;
2176 }
2177
2178 let (start, goal) = movement::down(&display_map, end, selection.goal).unwrap();
2179 let cursor = start.to_point(&display_map);
2180 selection.start = cursor;
2181 selection.end = cursor;
2182 selection.goal = goal;
2183 selection.reversed = false;
2184 }
2185 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2186 }
2187
2188 pub fn select_down(&mut self, _: &SelectDown, cx: &mut ViewContext<Self>) {
2189 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2190 let mut selections = self.local_selections::<Point>(cx);
2191 for selection in &mut selections {
2192 let head = selection.head().to_display_point(&display_map);
2193 let (head, goal) = movement::down(&display_map, head, selection.goal).unwrap();
2194 let cursor = head.to_point(&display_map);
2195 selection.set_head(cursor);
2196 selection.goal = goal;
2197 }
2198 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2199 }
2200
2201 pub fn move_to_previous_word_boundary(
2202 &mut self,
2203 _: &MoveToPreviousWordBoundary,
2204 cx: &mut ViewContext<Self>,
2205 ) {
2206 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2207 let mut selections = self.local_selections::<Point>(cx);
2208 for selection in &mut selections {
2209 let head = selection.head().to_display_point(&display_map);
2210 let cursor = movement::prev_word_boundary(&display_map, head).to_point(&display_map);
2211 selection.start = cursor.clone();
2212 selection.end = cursor;
2213 selection.reversed = false;
2214 selection.goal = SelectionGoal::None;
2215 }
2216 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2217 }
2218
2219 pub fn select_to_previous_word_boundary(
2220 &mut self,
2221 _: &SelectToPreviousWordBoundary,
2222 cx: &mut ViewContext<Self>,
2223 ) {
2224 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2225 let mut selections = self.local_selections::<Point>(cx);
2226 for selection in &mut selections {
2227 let head = selection.head().to_display_point(&display_map);
2228 let cursor = movement::prev_word_boundary(&display_map, head).to_point(&display_map);
2229 selection.set_head(cursor);
2230 selection.goal = SelectionGoal::None;
2231 }
2232 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2233 }
2234
2235 pub fn delete_to_previous_word_boundary(
2236 &mut self,
2237 _: &DeleteToPreviousWordBoundary,
2238 cx: &mut ViewContext<Self>,
2239 ) {
2240 self.start_transaction(cx);
2241 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2242 let mut selections = self.local_selections::<Point>(cx);
2243 for selection in &mut selections {
2244 if selection.is_empty() {
2245 let head = selection.head().to_display_point(&display_map);
2246 let cursor =
2247 movement::prev_word_boundary(&display_map, head).to_point(&display_map);
2248 selection.set_head(cursor);
2249 selection.goal = SelectionGoal::None;
2250 }
2251 }
2252 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2253 self.insert("", cx);
2254 self.end_transaction(cx);
2255 }
2256
2257 pub fn move_to_next_word_boundary(
2258 &mut self,
2259 _: &MoveToNextWordBoundary,
2260 cx: &mut ViewContext<Self>,
2261 ) {
2262 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2263 let mut selections = self.local_selections::<Point>(cx);
2264 for selection in &mut selections {
2265 let head = selection.head().to_display_point(&display_map);
2266 let cursor = movement::next_word_boundary(&display_map, head).to_point(&display_map);
2267 selection.start = cursor;
2268 selection.end = cursor;
2269 selection.reversed = false;
2270 selection.goal = SelectionGoal::None;
2271 }
2272 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2273 }
2274
2275 pub fn select_to_next_word_boundary(
2276 &mut self,
2277 _: &SelectToNextWordBoundary,
2278 cx: &mut ViewContext<Self>,
2279 ) {
2280 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2281 let mut selections = self.local_selections::<Point>(cx);
2282 for selection in &mut selections {
2283 let head = selection.head().to_display_point(&display_map);
2284 let cursor = movement::next_word_boundary(&display_map, head).to_point(&display_map);
2285 selection.set_head(cursor);
2286 selection.goal = SelectionGoal::None;
2287 }
2288 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2289 }
2290
2291 pub fn delete_to_next_word_boundary(
2292 &mut self,
2293 _: &DeleteToNextWordBoundary,
2294 cx: &mut ViewContext<Self>,
2295 ) {
2296 self.start_transaction(cx);
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 if selection.is_empty() {
2301 let head = selection.head().to_display_point(&display_map);
2302 let cursor =
2303 movement::next_word_boundary(&display_map, head).to_point(&display_map);
2304 selection.set_head(cursor);
2305 selection.goal = SelectionGoal::None;
2306 }
2307 }
2308 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2309 self.insert("", cx);
2310 self.end_transaction(cx);
2311 }
2312
2313 pub fn move_to_beginning_of_line(
2314 &mut self,
2315 _: &MoveToBeginningOfLine,
2316 cx: &mut ViewContext<Self>,
2317 ) {
2318 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2319 let mut selections = self.local_selections::<Point>(cx);
2320 for selection in &mut selections {
2321 let head = selection.head().to_display_point(&display_map);
2322 let new_head = movement::line_beginning(&display_map, head, true);
2323 let cursor = new_head.to_point(&display_map);
2324 selection.start = cursor;
2325 selection.end = cursor;
2326 selection.reversed = false;
2327 selection.goal = SelectionGoal::None;
2328 }
2329 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2330 }
2331
2332 pub fn select_to_beginning_of_line(
2333 &mut self,
2334 SelectToBeginningOfLine(toggle_indent): &SelectToBeginningOfLine,
2335 cx: &mut ViewContext<Self>,
2336 ) {
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_beginning(&display_map, head, *toggle_indent);
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_beginning_of_line(
2349 &mut self,
2350 _: &DeleteToBeginningOfLine,
2351 cx: &mut ViewContext<Self>,
2352 ) {
2353 self.start_transaction(cx);
2354 self.select_to_beginning_of_line(&SelectToBeginningOfLine(false), cx);
2355 self.backspace(&Backspace, cx);
2356 self.end_transaction(cx);
2357 }
2358
2359 pub fn move_to_end_of_line(&mut self, _: &MoveToEndOfLine, cx: &mut ViewContext<Self>) {
2360 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2361 let mut selections = self.local_selections::<Point>(cx);
2362 {
2363 for selection in &mut selections {
2364 let head = selection.head().to_display_point(&display_map);
2365 let new_head = movement::line_end(&display_map, head);
2366 let anchor = new_head.to_point(&display_map);
2367 selection.start = anchor.clone();
2368 selection.end = anchor;
2369 selection.reversed = false;
2370 selection.goal = SelectionGoal::None;
2371 }
2372 }
2373 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2374 }
2375
2376 pub fn select_to_end_of_line(&mut self, _: &SelectToEndOfLine, cx: &mut ViewContext<Self>) {
2377 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2378 let mut selections = self.local_selections::<Point>(cx);
2379 for selection in &mut selections {
2380 let head = selection.head().to_display_point(&display_map);
2381 let new_head = movement::line_end(&display_map, head);
2382 selection.set_head(new_head.to_point(&display_map));
2383 selection.goal = SelectionGoal::None;
2384 }
2385 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2386 }
2387
2388 pub fn delete_to_end_of_line(&mut self, _: &DeleteToEndOfLine, cx: &mut ViewContext<Self>) {
2389 self.start_transaction(cx);
2390 self.select_to_end_of_line(&SelectToEndOfLine, cx);
2391 self.delete(&Delete, cx);
2392 self.end_transaction(cx);
2393 }
2394
2395 pub fn cut_to_end_of_line(&mut self, _: &CutToEndOfLine, cx: &mut ViewContext<Self>) {
2396 self.start_transaction(cx);
2397 self.select_to_end_of_line(&SelectToEndOfLine, cx);
2398 self.cut(&Cut, cx);
2399 self.end_transaction(cx);
2400 }
2401
2402 pub fn move_to_beginning(&mut self, _: &MoveToBeginning, cx: &mut ViewContext<Self>) {
2403 let selection = Selection {
2404 id: post_inc(&mut self.next_selection_id),
2405 start: 0,
2406 end: 0,
2407 reversed: false,
2408 goal: SelectionGoal::None,
2409 };
2410 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
2411 }
2412
2413 pub fn select_to_beginning(&mut self, _: &SelectToBeginning, cx: &mut ViewContext<Self>) {
2414 let mut selection = self.local_selections::<Point>(cx).last().unwrap().clone();
2415 selection.set_head(Point::zero());
2416 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
2417 }
2418
2419 pub fn move_to_end(&mut self, _: &MoveToEnd, cx: &mut ViewContext<Self>) {
2420 let cursor = self.buffer.read(cx).read(cx).len();
2421 let selection = Selection {
2422 id: post_inc(&mut self.next_selection_id),
2423 start: cursor,
2424 end: cursor,
2425 reversed: false,
2426 goal: SelectionGoal::None,
2427 };
2428 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
2429 }
2430
2431 pub fn select_to_end(&mut self, _: &SelectToEnd, cx: &mut ViewContext<Self>) {
2432 let mut selection = self.local_selections::<usize>(cx).first().unwrap().clone();
2433 selection.set_head(self.buffer.read(cx).read(cx).len());
2434 self.update_selections(vec![selection], Some(Autoscroll::Fit), cx);
2435 }
2436
2437 pub fn select_all(&mut self, _: &SelectAll, cx: &mut ViewContext<Self>) {
2438 let selection = Selection {
2439 id: post_inc(&mut self.next_selection_id),
2440 start: 0,
2441 end: self.buffer.read(cx).read(cx).len(),
2442 reversed: false,
2443 goal: SelectionGoal::None,
2444 };
2445 self.update_selections(vec![selection], None, cx);
2446 }
2447
2448 pub fn select_line(&mut self, _: &SelectLine, cx: &mut ViewContext<Self>) {
2449 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2450 let mut selections = self.local_selections::<Point>(cx);
2451 let max_point = display_map.buffer_snapshot.max_point();
2452 for selection in &mut selections {
2453 let rows = selection.spanned_rows(true, &display_map);
2454 selection.start = Point::new(rows.start, 0);
2455 selection.end = cmp::min(max_point, Point::new(rows.end, 0));
2456 selection.reversed = false;
2457 }
2458 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2459 }
2460
2461 pub fn split_selection_into_lines(
2462 &mut self,
2463 _: &SplitSelectionIntoLines,
2464 cx: &mut ViewContext<Self>,
2465 ) {
2466 let mut to_unfold = Vec::new();
2467 let mut new_selections = Vec::new();
2468 {
2469 let selections = self.local_selections::<Point>(cx);
2470 let buffer = self.buffer.read(cx).read(cx);
2471 for selection in selections {
2472 for row in selection.start.row..selection.end.row {
2473 let cursor = Point::new(row, buffer.line_len(row));
2474 new_selections.push(Selection {
2475 id: post_inc(&mut self.next_selection_id),
2476 start: cursor,
2477 end: cursor,
2478 reversed: false,
2479 goal: SelectionGoal::None,
2480 });
2481 }
2482 new_selections.push(Selection {
2483 id: selection.id,
2484 start: selection.end,
2485 end: selection.end,
2486 reversed: false,
2487 goal: SelectionGoal::None,
2488 });
2489 to_unfold.push(selection.start..selection.end);
2490 }
2491 }
2492 self.unfold_ranges(to_unfold, cx);
2493 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
2494 }
2495
2496 pub fn add_selection_above(&mut self, _: &AddSelectionAbove, cx: &mut ViewContext<Self>) {
2497 self.add_selection(true, cx);
2498 }
2499
2500 pub fn add_selection_below(&mut self, _: &AddSelectionBelow, cx: &mut ViewContext<Self>) {
2501 self.add_selection(false, cx);
2502 }
2503
2504 fn add_selection(&mut self, above: bool, cx: &mut ViewContext<Self>) {
2505 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2506 let mut selections = self.local_selections::<Point>(cx);
2507 let mut state = self.add_selections_state.take().unwrap_or_else(|| {
2508 let oldest_selection = selections.iter().min_by_key(|s| s.id).unwrap().clone();
2509 let range = oldest_selection.display_range(&display_map).sorted();
2510 let columns = cmp::min(range.start.column(), range.end.column())
2511 ..cmp::max(range.start.column(), range.end.column());
2512
2513 selections.clear();
2514 let mut stack = Vec::new();
2515 for row in range.start.row()..=range.end.row() {
2516 if let Some(selection) = self.build_columnar_selection(
2517 &display_map,
2518 row,
2519 &columns,
2520 oldest_selection.reversed,
2521 ) {
2522 stack.push(selection.id);
2523 selections.push(selection);
2524 }
2525 }
2526
2527 if above {
2528 stack.reverse();
2529 }
2530
2531 AddSelectionsState { above, stack }
2532 });
2533
2534 let last_added_selection = *state.stack.last().unwrap();
2535 let mut new_selections = Vec::new();
2536 if above == state.above {
2537 let end_row = if above {
2538 0
2539 } else {
2540 display_map.max_point().row()
2541 };
2542
2543 'outer: for selection in selections {
2544 if selection.id == last_added_selection {
2545 let range = selection.display_range(&display_map).sorted();
2546 debug_assert_eq!(range.start.row(), range.end.row());
2547 let mut row = range.start.row();
2548 let columns = if let SelectionGoal::ColumnRange { start, end } = selection.goal
2549 {
2550 start..end
2551 } else {
2552 cmp::min(range.start.column(), range.end.column())
2553 ..cmp::max(range.start.column(), range.end.column())
2554 };
2555
2556 while row != end_row {
2557 if above {
2558 row -= 1;
2559 } else {
2560 row += 1;
2561 }
2562
2563 if let Some(new_selection) = self.build_columnar_selection(
2564 &display_map,
2565 row,
2566 &columns,
2567 selection.reversed,
2568 ) {
2569 state.stack.push(new_selection.id);
2570 if above {
2571 new_selections.push(new_selection);
2572 new_selections.push(selection);
2573 } else {
2574 new_selections.push(selection);
2575 new_selections.push(new_selection);
2576 }
2577
2578 continue 'outer;
2579 }
2580 }
2581 }
2582
2583 new_selections.push(selection);
2584 }
2585 } else {
2586 new_selections = selections;
2587 new_selections.retain(|s| s.id != last_added_selection);
2588 state.stack.pop();
2589 }
2590
2591 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
2592 if state.stack.len() > 1 {
2593 self.add_selections_state = Some(state);
2594 }
2595 }
2596
2597 pub fn select_next(&mut self, action: &SelectNext, cx: &mut ViewContext<Self>) {
2598 let replace_newest = action.0;
2599 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2600 let buffer = &display_map.buffer_snapshot;
2601 let mut selections = self.local_selections::<usize>(cx);
2602 if let Some(mut select_next_state) = self.select_next_state.take() {
2603 let query = &select_next_state.query;
2604 if !select_next_state.done {
2605 let first_selection = selections.iter().min_by_key(|s| s.id).unwrap();
2606 let last_selection = selections.iter().max_by_key(|s| s.id).unwrap();
2607 let mut next_selected_range = None;
2608
2609 let bytes_after_last_selection =
2610 buffer.bytes_in_range(last_selection.end..buffer.len());
2611 let bytes_before_first_selection = buffer.bytes_in_range(0..first_selection.start);
2612 let query_matches = query
2613 .stream_find_iter(bytes_after_last_selection)
2614 .map(|result| (last_selection.end, result))
2615 .chain(
2616 query
2617 .stream_find_iter(bytes_before_first_selection)
2618 .map(|result| (0, result)),
2619 );
2620 for (start_offset, query_match) in query_matches {
2621 let query_match = query_match.unwrap(); // can only fail due to I/O
2622 let offset_range =
2623 start_offset + query_match.start()..start_offset + query_match.end();
2624 let display_range = offset_range.start.to_display_point(&display_map)
2625 ..offset_range.end.to_display_point(&display_map);
2626
2627 if !select_next_state.wordwise
2628 || (!movement::is_inside_word(&display_map, display_range.start)
2629 && !movement::is_inside_word(&display_map, display_range.end))
2630 {
2631 next_selected_range = Some(offset_range);
2632 break;
2633 }
2634 }
2635
2636 if let Some(next_selected_range) = next_selected_range {
2637 if replace_newest {
2638 if let Some(newest_id) =
2639 selections.iter().max_by_key(|s| s.id).map(|s| s.id)
2640 {
2641 selections.retain(|s| s.id != newest_id);
2642 }
2643 }
2644 selections.push(Selection {
2645 id: post_inc(&mut self.next_selection_id),
2646 start: next_selected_range.start,
2647 end: next_selected_range.end,
2648 reversed: false,
2649 goal: SelectionGoal::None,
2650 });
2651 selections.sort_unstable_by_key(|s| s.start);
2652 self.update_selections(selections, Some(Autoscroll::Newest), cx);
2653 } else {
2654 select_next_state.done = true;
2655 }
2656 }
2657
2658 self.select_next_state = Some(select_next_state);
2659 } else if selections.len() == 1 {
2660 let selection = selections.last_mut().unwrap();
2661 if selection.start == selection.end {
2662 let word_range = movement::surrounding_word(
2663 &display_map,
2664 selection.start.to_display_point(&display_map),
2665 );
2666 selection.start = word_range.start.to_offset(&display_map, Bias::Left);
2667 selection.end = word_range.end.to_offset(&display_map, Bias::Left);
2668 selection.goal = SelectionGoal::None;
2669 selection.reversed = false;
2670
2671 let query = buffer
2672 .text_for_range(selection.start..selection.end)
2673 .collect::<String>();
2674 let select_state = SelectNextState {
2675 query: AhoCorasick::new_auto_configured(&[query]),
2676 wordwise: true,
2677 done: false,
2678 };
2679 self.update_selections(selections, Some(Autoscroll::Newest), cx);
2680 self.select_next_state = Some(select_state);
2681 } else {
2682 let query = buffer
2683 .text_for_range(selection.start..selection.end)
2684 .collect::<String>();
2685 self.select_next_state = Some(SelectNextState {
2686 query: AhoCorasick::new_auto_configured(&[query]),
2687 wordwise: false,
2688 done: false,
2689 });
2690 self.select_next(action, cx);
2691 }
2692 }
2693 }
2694
2695 pub fn toggle_comments(&mut self, _: &ToggleComments, cx: &mut ViewContext<Self>) {
2696 // Get the line comment prefix. Split its trailing whitespace into a separate string,
2697 // as that portion won't be used for detecting if a line is a comment.
2698 let full_comment_prefix =
2699 if let Some(prefix) = self.language(cx).and_then(|l| l.line_comment_prefix()) {
2700 prefix.to_string()
2701 } else {
2702 return;
2703 };
2704 let comment_prefix = full_comment_prefix.trim_end_matches(' ');
2705 let comment_prefix_whitespace = &full_comment_prefix[comment_prefix.len()..];
2706
2707 self.start_transaction(cx);
2708 let mut selections = self.local_selections::<Point>(cx);
2709 let mut all_selection_lines_are_comments = true;
2710 let mut edit_ranges = Vec::new();
2711 let mut last_toggled_row = None;
2712 self.buffer.update(cx, |buffer, cx| {
2713 for selection in &mut selections {
2714 edit_ranges.clear();
2715 let snapshot = buffer.snapshot(cx);
2716
2717 let end_row =
2718 if selection.end.row > selection.start.row && selection.end.column == 0 {
2719 selection.end.row
2720 } else {
2721 selection.end.row + 1
2722 };
2723
2724 for row in selection.start.row..end_row {
2725 // If multiple selections contain a given row, avoid processing that
2726 // row more than once.
2727 if last_toggled_row == Some(row) {
2728 continue;
2729 } else {
2730 last_toggled_row = Some(row);
2731 }
2732
2733 if snapshot.is_line_blank(row) {
2734 continue;
2735 }
2736
2737 let start = Point::new(row, snapshot.indent_column_for_line(row));
2738 let mut line_bytes = snapshot
2739 .bytes_in_range(start..snapshot.max_point())
2740 .flatten()
2741 .copied();
2742
2743 // If this line currently begins with the line comment prefix, then record
2744 // the range containing the prefix.
2745 if all_selection_lines_are_comments
2746 && line_bytes
2747 .by_ref()
2748 .take(comment_prefix.len())
2749 .eq(comment_prefix.bytes())
2750 {
2751 // Include any whitespace that matches the comment prefix.
2752 let matching_whitespace_len = line_bytes
2753 .zip(comment_prefix_whitespace.bytes())
2754 .take_while(|(a, b)| a == b)
2755 .count() as u32;
2756 let end = Point::new(
2757 row,
2758 start.column + comment_prefix.len() as u32 + matching_whitespace_len,
2759 );
2760 edit_ranges.push(start..end);
2761 }
2762 // If this line does not begin with the line comment prefix, then record
2763 // the position where the prefix should be inserted.
2764 else {
2765 all_selection_lines_are_comments = false;
2766 edit_ranges.push(start..start);
2767 }
2768 }
2769
2770 if !edit_ranges.is_empty() {
2771 if all_selection_lines_are_comments {
2772 buffer.edit(edit_ranges.iter().cloned(), "", cx);
2773 } else {
2774 let min_column = edit_ranges.iter().map(|r| r.start.column).min().unwrap();
2775 let edit_ranges = edit_ranges.iter().map(|range| {
2776 let position = Point::new(range.start.row, min_column);
2777 position..position
2778 });
2779 buffer.edit(edit_ranges, &full_comment_prefix, cx);
2780 }
2781 }
2782 }
2783 });
2784
2785 self.update_selections(
2786 self.local_selections::<usize>(cx),
2787 Some(Autoscroll::Fit),
2788 cx,
2789 );
2790 self.end_transaction(cx);
2791 }
2792
2793 pub fn select_larger_syntax_node(
2794 &mut self,
2795 _: &SelectLargerSyntaxNode,
2796 cx: &mut ViewContext<Self>,
2797 ) {
2798 let old_selections = self.local_selections::<usize>(cx).into_boxed_slice();
2799 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
2800 let buffer = self.buffer.read(cx).snapshot(cx);
2801
2802 let mut stack = mem::take(&mut self.select_larger_syntax_node_stack);
2803 let mut selected_larger_node = false;
2804 let mut new_selections = old_selections
2805 .iter()
2806 .map(|selection| {
2807 let old_range = selection.start..selection.end;
2808 let mut new_range = old_range.clone();
2809 while let Some(containing_range) =
2810 buffer.range_for_syntax_ancestor(new_range.clone())
2811 {
2812 new_range = containing_range;
2813 if !display_map.intersects_fold(new_range.start)
2814 && !display_map.intersects_fold(new_range.end)
2815 {
2816 break;
2817 }
2818 }
2819
2820 selected_larger_node |= new_range != old_range;
2821 Selection {
2822 id: selection.id,
2823 start: new_range.start,
2824 end: new_range.end,
2825 goal: SelectionGoal::None,
2826 reversed: selection.reversed,
2827 }
2828 })
2829 .collect::<Vec<_>>();
2830
2831 if selected_larger_node {
2832 stack.push(old_selections);
2833 new_selections.sort_unstable_by_key(|selection| selection.start);
2834 self.update_selections(new_selections, Some(Autoscroll::Fit), cx);
2835 }
2836 self.select_larger_syntax_node_stack = stack;
2837 }
2838
2839 pub fn select_smaller_syntax_node(
2840 &mut self,
2841 _: &SelectSmallerSyntaxNode,
2842 cx: &mut ViewContext<Self>,
2843 ) {
2844 let mut stack = mem::take(&mut self.select_larger_syntax_node_stack);
2845 if let Some(selections) = stack.pop() {
2846 self.update_selections(selections.to_vec(), Some(Autoscroll::Fit), cx);
2847 }
2848 self.select_larger_syntax_node_stack = stack;
2849 }
2850
2851 pub fn move_to_enclosing_bracket(
2852 &mut self,
2853 _: &MoveToEnclosingBracket,
2854 cx: &mut ViewContext<Self>,
2855 ) {
2856 let mut selections = self.local_selections::<usize>(cx);
2857 let buffer = self.buffer.read(cx).snapshot(cx);
2858 for selection in &mut selections {
2859 if let Some((open_range, close_range)) =
2860 buffer.enclosing_bracket_ranges(selection.start..selection.end)
2861 {
2862 let close_range = close_range.to_inclusive();
2863 let destination = if close_range.contains(&selection.start)
2864 && close_range.contains(&selection.end)
2865 {
2866 open_range.end
2867 } else {
2868 *close_range.start()
2869 };
2870 selection.start = destination;
2871 selection.end = destination;
2872 }
2873 }
2874
2875 self.update_selections(selections, Some(Autoscroll::Fit), cx);
2876 }
2877
2878 pub fn show_next_diagnostic(&mut self, _: &ShowNextDiagnostic, cx: &mut ViewContext<Self>) {
2879 let buffer = self.buffer.read(cx).snapshot(cx);
2880 let selection = self.newest_selection::<usize>(&buffer);
2881 let active_primary_range = self.active_diagnostics.as_ref().map(|active_diagnostics| {
2882 active_diagnostics
2883 .primary_range
2884 .to_offset(&buffer)
2885 .to_inclusive()
2886 });
2887 let mut search_start = if let Some(active_primary_range) = active_primary_range.as_ref() {
2888 if active_primary_range.contains(&selection.head()) {
2889 *active_primary_range.end()
2890 } else {
2891 selection.head()
2892 }
2893 } else {
2894 selection.head()
2895 };
2896
2897 loop {
2898 let next_group = buffer
2899 .diagnostics_in_range::<_, usize>(search_start..buffer.len())
2900 .find_map(|entry| {
2901 if entry.diagnostic.is_primary
2902 && !entry.range.is_empty()
2903 && Some(entry.range.end) != active_primary_range.as_ref().map(|r| *r.end())
2904 {
2905 Some((entry.range, entry.diagnostic.group_id))
2906 } else {
2907 None
2908 }
2909 });
2910
2911 if let Some((primary_range, group_id)) = next_group {
2912 self.activate_diagnostics(group_id, cx);
2913 self.update_selections(
2914 vec![Selection {
2915 id: selection.id,
2916 start: primary_range.start,
2917 end: primary_range.start,
2918 reversed: false,
2919 goal: SelectionGoal::None,
2920 }],
2921 Some(Autoscroll::Center),
2922 cx,
2923 );
2924 break;
2925 } else if search_start == 0 {
2926 break;
2927 } else {
2928 // Cycle around to the start of the buffer.
2929 search_start = 0;
2930 }
2931 }
2932 }
2933
2934 fn refresh_active_diagnostics(&mut self, cx: &mut ViewContext<Editor>) {
2935 if let Some(active_diagnostics) = self.active_diagnostics.as_mut() {
2936 let buffer = self.buffer.read(cx).snapshot(cx);
2937 let primary_range_start = active_diagnostics.primary_range.start.to_offset(&buffer);
2938 let is_valid = buffer
2939 .diagnostics_in_range::<_, usize>(active_diagnostics.primary_range.clone())
2940 .any(|entry| {
2941 entry.diagnostic.is_primary
2942 && !entry.range.is_empty()
2943 && entry.range.start == primary_range_start
2944 && entry.diagnostic.message == active_diagnostics.primary_message
2945 });
2946
2947 if is_valid != active_diagnostics.is_valid {
2948 active_diagnostics.is_valid = is_valid;
2949 let mut new_styles = HashMap::default();
2950 for (block_id, diagnostic) in &active_diagnostics.blocks {
2951 new_styles.insert(
2952 *block_id,
2953 diagnostic_block_renderer(
2954 diagnostic.clone(),
2955 is_valid,
2956 self.build_settings.clone(),
2957 ),
2958 );
2959 }
2960 self.display_map
2961 .update(cx, |display_map, _| display_map.replace_blocks(new_styles));
2962 }
2963 }
2964 }
2965
2966 fn activate_diagnostics(&mut self, group_id: usize, cx: &mut ViewContext<Self>) {
2967 self.dismiss_diagnostics(cx);
2968 self.active_diagnostics = self.display_map.update(cx, |display_map, cx| {
2969 let buffer = self.buffer.read(cx).snapshot(cx);
2970
2971 let mut primary_range = None;
2972 let mut primary_message = None;
2973 let mut group_end = Point::zero();
2974 let diagnostic_group = buffer
2975 .diagnostic_group::<Point>(group_id)
2976 .map(|entry| {
2977 if entry.range.end > group_end {
2978 group_end = entry.range.end;
2979 }
2980 if entry.diagnostic.is_primary {
2981 primary_range = Some(entry.range.clone());
2982 primary_message = Some(entry.diagnostic.message.clone());
2983 }
2984 entry
2985 })
2986 .collect::<Vec<_>>();
2987 let primary_range = primary_range.unwrap();
2988 let primary_message = primary_message.unwrap();
2989 let primary_range =
2990 buffer.anchor_after(primary_range.start)..buffer.anchor_before(primary_range.end);
2991
2992 let blocks = display_map
2993 .insert_blocks(
2994 diagnostic_group.iter().map(|entry| {
2995 let build_settings = self.build_settings.clone();
2996 let diagnostic = entry.diagnostic.clone();
2997 let message_height = diagnostic.message.lines().count() as u8;
2998
2999 BlockProperties {
3000 position: buffer.anchor_after(entry.range.start),
3001 height: message_height,
3002 render: diagnostic_block_renderer(diagnostic, true, build_settings),
3003 disposition: BlockDisposition::Below,
3004 }
3005 }),
3006 cx,
3007 )
3008 .into_iter()
3009 .zip(diagnostic_group.into_iter().map(|entry| entry.diagnostic))
3010 .collect();
3011
3012 Some(ActiveDiagnosticGroup {
3013 primary_range,
3014 primary_message,
3015 blocks,
3016 is_valid: true,
3017 })
3018 });
3019 }
3020
3021 fn dismiss_diagnostics(&mut self, cx: &mut ViewContext<Self>) {
3022 if let Some(active_diagnostic_group) = self.active_diagnostics.take() {
3023 self.display_map.update(cx, |display_map, cx| {
3024 display_map.remove_blocks(active_diagnostic_group.blocks.into_keys().collect(), cx);
3025 });
3026 cx.notify();
3027 }
3028 }
3029
3030 fn build_columnar_selection(
3031 &mut self,
3032 display_map: &DisplaySnapshot,
3033 row: u32,
3034 columns: &Range<u32>,
3035 reversed: bool,
3036 ) -> Option<Selection<Point>> {
3037 let is_empty = columns.start == columns.end;
3038 let line_len = display_map.line_len(row);
3039 if columns.start < line_len || (is_empty && columns.start == line_len) {
3040 let start = DisplayPoint::new(row, columns.start);
3041 let end = DisplayPoint::new(row, cmp::min(columns.end, line_len));
3042 Some(Selection {
3043 id: post_inc(&mut self.next_selection_id),
3044 start: start.to_point(display_map),
3045 end: end.to_point(display_map),
3046 reversed,
3047 goal: SelectionGoal::ColumnRange {
3048 start: columns.start,
3049 end: columns.end,
3050 },
3051 })
3052 } else {
3053 None
3054 }
3055 }
3056
3057 pub fn local_selections_in_range(
3058 &self,
3059 range: Range<Anchor>,
3060 display_map: &DisplaySnapshot,
3061 ) -> Vec<Selection<Point>> {
3062 let buffer = &display_map.buffer_snapshot;
3063
3064 let start_ix = match self
3065 .selections
3066 .binary_search_by(|probe| probe.end.cmp(&range.start, &buffer).unwrap())
3067 {
3068 Ok(ix) | Err(ix) => ix,
3069 };
3070 let end_ix = match self
3071 .selections
3072 .binary_search_by(|probe| probe.start.cmp(&range.end, &buffer).unwrap())
3073 {
3074 Ok(ix) => ix + 1,
3075 Err(ix) => ix,
3076 };
3077
3078 fn point_selection(
3079 selection: &Selection<Anchor>,
3080 buffer: &MultiBufferSnapshot,
3081 ) -> Selection<Point> {
3082 let start = selection.start.to_point(&buffer);
3083 let end = selection.end.to_point(&buffer);
3084 Selection {
3085 id: selection.id,
3086 start,
3087 end,
3088 reversed: selection.reversed,
3089 goal: selection.goal,
3090 }
3091 }
3092
3093 self.selections[start_ix..end_ix]
3094 .iter()
3095 .chain(
3096 self.pending_selection
3097 .as_ref()
3098 .map(|pending| &pending.selection),
3099 )
3100 .map(|s| point_selection(s, &buffer))
3101 .collect()
3102 }
3103
3104 pub fn local_selections<'a, D>(&self, cx: &'a AppContext) -> Vec<Selection<D>>
3105 where
3106 D: 'a + TextDimension + Ord + Sub<D, Output = D>,
3107 {
3108 let buffer = self.buffer.read(cx).snapshot(cx);
3109 let mut selections = self
3110 .resolve_selections::<D, _>(self.selections.iter(), &buffer)
3111 .peekable();
3112
3113 let mut pending_selection = self.pending_selection::<D>(&buffer);
3114
3115 iter::from_fn(move || {
3116 if let Some(pending) = pending_selection.as_mut() {
3117 while let Some(next_selection) = selections.peek() {
3118 if pending.start <= next_selection.end && pending.end >= next_selection.start {
3119 let next_selection = selections.next().unwrap();
3120 if next_selection.start < pending.start {
3121 pending.start = next_selection.start;
3122 }
3123 if next_selection.end > pending.end {
3124 pending.end = next_selection.end;
3125 }
3126 } else if next_selection.end < pending.start {
3127 return selections.next();
3128 } else {
3129 break;
3130 }
3131 }
3132
3133 pending_selection.take()
3134 } else {
3135 selections.next()
3136 }
3137 })
3138 .collect()
3139 }
3140
3141 fn resolve_selections<'a, D, I>(
3142 &self,
3143 selections: I,
3144 snapshot: &MultiBufferSnapshot,
3145 ) -> impl 'a + Iterator<Item = Selection<D>>
3146 where
3147 D: TextDimension + Ord + Sub<D, Output = D>,
3148 I: 'a + IntoIterator<Item = &'a Selection<Anchor>>,
3149 {
3150 let (to_summarize, selections) = selections.into_iter().tee();
3151 let mut summaries = snapshot
3152 .summaries_for_anchors::<D, _>(to_summarize.flat_map(|s| [&s.start, &s.end]))
3153 .into_iter();
3154 selections.map(move |s| Selection {
3155 id: s.id,
3156 start: summaries.next().unwrap(),
3157 end: summaries.next().unwrap(),
3158 reversed: s.reversed,
3159 goal: s.goal,
3160 })
3161 }
3162
3163 fn pending_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
3164 &self,
3165 snapshot: &MultiBufferSnapshot,
3166 ) -> Option<Selection<D>> {
3167 self.pending_selection
3168 .as_ref()
3169 .map(|pending| self.resolve_selection(&pending.selection, &snapshot))
3170 }
3171
3172 fn resolve_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
3173 &self,
3174 selection: &Selection<Anchor>,
3175 buffer: &MultiBufferSnapshot,
3176 ) -> Selection<D> {
3177 Selection {
3178 id: selection.id,
3179 start: selection.start.summary::<D>(&buffer),
3180 end: selection.end.summary::<D>(&buffer),
3181 reversed: selection.reversed,
3182 goal: selection.goal,
3183 }
3184 }
3185
3186 fn selection_count<'a>(&self) -> usize {
3187 let mut count = self.selections.len();
3188 if self.pending_selection.is_some() {
3189 count += 1;
3190 }
3191 count
3192 }
3193
3194 pub fn oldest_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
3195 &self,
3196 snapshot: &MultiBufferSnapshot,
3197 ) -> Selection<D> {
3198 self.selections
3199 .iter()
3200 .min_by_key(|s| s.id)
3201 .map(|selection| self.resolve_selection(selection, snapshot))
3202 .or_else(|| self.pending_selection(snapshot))
3203 .unwrap()
3204 }
3205
3206 pub fn newest_selection<D: TextDimension + Ord + Sub<D, Output = D>>(
3207 &self,
3208 snapshot: &MultiBufferSnapshot,
3209 ) -> Selection<D> {
3210 self.pending_selection(snapshot)
3211 .or_else(|| {
3212 self.selections
3213 .iter()
3214 .max_by_key(|s| s.id)
3215 .map(|selection| self.resolve_selection(selection, snapshot))
3216 })
3217 .unwrap()
3218 }
3219
3220 pub fn update_selections<T>(
3221 &mut self,
3222 mut selections: Vec<Selection<T>>,
3223 autoscroll: Option<Autoscroll>,
3224 cx: &mut ViewContext<Self>,
3225 ) where
3226 T: ToOffset + ToPoint + Ord + std::marker::Copy + std::fmt::Debug,
3227 {
3228 // Merge overlapping selections.
3229 let buffer = self.buffer.read(cx).snapshot(cx);
3230 let mut i = 1;
3231 while i < selections.len() {
3232 if selections[i - 1].end >= selections[i].start {
3233 let removed = selections.remove(i);
3234 if removed.start < selections[i - 1].start {
3235 selections[i - 1].start = removed.start;
3236 }
3237 if removed.end > selections[i - 1].end {
3238 selections[i - 1].end = removed.end;
3239 }
3240 } else {
3241 i += 1;
3242 }
3243 }
3244
3245 self.pending_selection = None;
3246 self.add_selections_state = None;
3247 self.select_next_state = None;
3248 self.select_larger_syntax_node_stack.clear();
3249 while let Some(autoclose_pair) = self.autoclose_stack.last() {
3250 let all_selections_inside_autoclose_ranges =
3251 if selections.len() == autoclose_pair.ranges.len() {
3252 selections
3253 .iter()
3254 .zip(autoclose_pair.ranges.iter().map(|r| r.to_point(&buffer)))
3255 .all(|(selection, autoclose_range)| {
3256 let head = selection.head().to_point(&buffer);
3257 autoclose_range.start <= head && autoclose_range.end >= head
3258 })
3259 } else {
3260 false
3261 };
3262
3263 if all_selections_inside_autoclose_ranges {
3264 break;
3265 } else {
3266 self.autoclose_stack.pop();
3267 }
3268 }
3269
3270 if let Some(autoscroll) = autoscroll {
3271 self.request_autoscroll(autoscroll, cx);
3272 }
3273 self.pause_cursor_blinking(cx);
3274
3275 self.set_selections(
3276 Arc::from_iter(selections.into_iter().map(|selection| {
3277 let end_bias = if selection.end > selection.start {
3278 Bias::Left
3279 } else {
3280 Bias::Right
3281 };
3282 Selection {
3283 id: selection.id,
3284 start: buffer.anchor_after(selection.start),
3285 end: buffer.anchor_at(selection.end, end_bias),
3286 reversed: selection.reversed,
3287 goal: selection.goal,
3288 }
3289 })),
3290 cx,
3291 );
3292 }
3293
3294 /// Compute new ranges for any selections that were located in excerpts that have
3295 /// since been removed.
3296 ///
3297 /// Returns a `HashMap` indicating which selections whose former head position
3298 /// was no longer present. The keys of the map are selection ids. The values are
3299 /// the id of the new excerpt where the head of the selection has been moved.
3300 pub fn refresh_selections(&mut self, cx: &mut ViewContext<Self>) -> HashMap<usize, ExcerptId> {
3301 let anchors_with_status = self.buffer.update(cx, |buffer, cx| {
3302 let snapshot = buffer.read(cx);
3303 snapshot.refresh_anchors(
3304 self.selections
3305 .iter()
3306 .flat_map(|selection| [&selection.start, &selection.end]),
3307 )
3308 });
3309 let mut selections_with_lost_position = HashMap::default();
3310 self.selections = self
3311 .selections
3312 .iter()
3313 .cloned()
3314 .zip(anchors_with_status.chunks(2))
3315 .map(|(mut selection, anchors)| {
3316 selection.start = anchors[0].0.clone();
3317 selection.end = anchors[1].0.clone();
3318 let kept_head_position = if selection.reversed {
3319 anchors[0].1
3320 } else {
3321 anchors[1].1
3322 };
3323 if !kept_head_position {
3324 selections_with_lost_position
3325 .insert(selection.id, selection.head().excerpt_id.clone());
3326 }
3327 selection
3328 })
3329 .collect();
3330 selections_with_lost_position
3331 }
3332
3333 fn set_selections(&mut self, selections: Arc<[Selection<Anchor>]>, cx: &mut ViewContext<Self>) {
3334 self.selections = selections;
3335 self.buffer.update(cx, |buffer, cx| {
3336 buffer.set_active_selections(&self.selections, cx)
3337 });
3338 }
3339
3340 fn request_autoscroll(&mut self, autoscroll: Autoscroll, cx: &mut ViewContext<Self>) {
3341 self.autoscroll_request = Some(autoscroll);
3342 cx.notify();
3343 }
3344
3345 fn start_transaction(&mut self, cx: &mut ViewContext<Self>) {
3346 self.start_transaction_at(Instant::now(), cx);
3347 }
3348
3349 fn start_transaction_at(&mut self, now: Instant, cx: &mut ViewContext<Self>) {
3350 self.end_selection(cx);
3351 if let Some(tx_id) = self
3352 .buffer
3353 .update(cx, |buffer, cx| buffer.start_transaction_at(now, cx))
3354 {
3355 self.selection_history
3356 .insert(tx_id, (self.selections.clone(), None));
3357 }
3358 }
3359
3360 fn end_transaction(&mut self, cx: &mut ViewContext<Self>) {
3361 self.end_transaction_at(Instant::now(), cx);
3362 }
3363
3364 fn end_transaction_at(&mut self, now: Instant, cx: &mut ViewContext<Self>) {
3365 if let Some(tx_id) = self
3366 .buffer
3367 .update(cx, |buffer, cx| buffer.end_transaction_at(now, cx))
3368 {
3369 self.selection_history.get_mut(&tx_id).unwrap().1 = Some(self.selections.clone());
3370 }
3371 }
3372
3373 pub fn page_up(&mut self, _: &PageUp, _: &mut ViewContext<Self>) {
3374 log::info!("Editor::page_up");
3375 }
3376
3377 pub fn page_down(&mut self, _: &PageDown, _: &mut ViewContext<Self>) {
3378 log::info!("Editor::page_down");
3379 }
3380
3381 pub fn fold(&mut self, _: &Fold, cx: &mut ViewContext<Self>) {
3382 let mut fold_ranges = Vec::new();
3383
3384 let selections = self.local_selections::<Point>(cx);
3385 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3386 for selection in selections {
3387 let range = selection.display_range(&display_map).sorted();
3388 let buffer_start_row = range.start.to_point(&display_map).row;
3389
3390 for row in (0..=range.end.row()).rev() {
3391 if self.is_line_foldable(&display_map, row) && !display_map.is_line_folded(row) {
3392 let fold_range = self.foldable_range_for_line(&display_map, row);
3393 if fold_range.end.row >= buffer_start_row {
3394 fold_ranges.push(fold_range);
3395 if row <= range.start.row() {
3396 break;
3397 }
3398 }
3399 }
3400 }
3401 }
3402
3403 self.fold_ranges(fold_ranges, cx);
3404 }
3405
3406 pub fn unfold(&mut self, _: &Unfold, cx: &mut ViewContext<Self>) {
3407 let selections = self.local_selections::<Point>(cx);
3408 let display_map = self.display_map.update(cx, |map, cx| map.snapshot(cx));
3409 let buffer = &display_map.buffer_snapshot;
3410 let ranges = selections
3411 .iter()
3412 .map(|s| {
3413 let range = s.display_range(&display_map).sorted();
3414 let mut start = range.start.to_point(&display_map);
3415 let mut end = range.end.to_point(&display_map);
3416 start.column = 0;
3417 end.column = buffer.line_len(end.row);
3418 start..end
3419 })
3420 .collect::<Vec<_>>();
3421 self.unfold_ranges(ranges, cx);
3422 }
3423
3424 fn is_line_foldable(&self, display_map: &DisplaySnapshot, display_row: u32) -> bool {
3425 let max_point = display_map.max_point();
3426 if display_row >= max_point.row() {
3427 false
3428 } else {
3429 let (start_indent, is_blank) = display_map.line_indent(display_row);
3430 if is_blank {
3431 false
3432 } else {
3433 for display_row in display_row + 1..=max_point.row() {
3434 let (indent, is_blank) = display_map.line_indent(display_row);
3435 if !is_blank {
3436 return indent > start_indent;
3437 }
3438 }
3439 false
3440 }
3441 }
3442 }
3443
3444 fn foldable_range_for_line(
3445 &self,
3446 display_map: &DisplaySnapshot,
3447 start_row: u32,
3448 ) -> Range<Point> {
3449 let max_point = display_map.max_point();
3450
3451 let (start_indent, _) = display_map.line_indent(start_row);
3452 let start = DisplayPoint::new(start_row, display_map.line_len(start_row));
3453 let mut end = None;
3454 for row in start_row + 1..=max_point.row() {
3455 let (indent, is_blank) = display_map.line_indent(row);
3456 if !is_blank && indent <= start_indent {
3457 end = Some(DisplayPoint::new(row - 1, display_map.line_len(row - 1)));
3458 break;
3459 }
3460 }
3461
3462 let end = end.unwrap_or(max_point);
3463 return start.to_point(display_map)..end.to_point(display_map);
3464 }
3465
3466 pub fn fold_selected_ranges(&mut self, _: &FoldSelectedRanges, cx: &mut ViewContext<Self>) {
3467 let selections = self.local_selections::<Point>(cx);
3468 let ranges = selections.into_iter().map(|s| s.start..s.end);
3469 self.fold_ranges(ranges, cx);
3470 }
3471
3472 fn fold_ranges<T: ToOffset>(
3473 &mut self,
3474 ranges: impl IntoIterator<Item = Range<T>>,
3475 cx: &mut ViewContext<Self>,
3476 ) {
3477 let mut ranges = ranges.into_iter().peekable();
3478 if ranges.peek().is_some() {
3479 self.display_map.update(cx, |map, cx| map.fold(ranges, cx));
3480 self.request_autoscroll(Autoscroll::Fit, cx);
3481 cx.notify();
3482 }
3483 }
3484
3485 fn unfold_ranges<T: ToOffset>(&mut self, ranges: Vec<Range<T>>, cx: &mut ViewContext<Self>) {
3486 if !ranges.is_empty() {
3487 self.display_map
3488 .update(cx, |map, cx| map.unfold(ranges, cx));
3489 self.request_autoscroll(Autoscroll::Fit, cx);
3490 cx.notify();
3491 }
3492 }
3493
3494 pub fn insert_blocks(
3495 &mut self,
3496 blocks: impl IntoIterator<Item = BlockProperties<Anchor>>,
3497 cx: &mut ViewContext<Self>,
3498 ) -> Vec<BlockId> {
3499 let blocks = self
3500 .display_map
3501 .update(cx, |display_map, cx| display_map.insert_blocks(blocks, cx));
3502 self.request_autoscroll(Autoscroll::Fit, cx);
3503 blocks
3504 }
3505
3506 pub fn replace_blocks(
3507 &mut self,
3508 blocks: HashMap<BlockId, RenderBlock>,
3509 cx: &mut ViewContext<Self>,
3510 ) {
3511 self.display_map
3512 .update(cx, |display_map, _| display_map.replace_blocks(blocks));
3513 self.request_autoscroll(Autoscroll::Fit, cx);
3514 }
3515
3516 pub fn remove_blocks(&mut self, block_ids: HashSet<BlockId>, cx: &mut ViewContext<Self>) {
3517 self.display_map.update(cx, |display_map, cx| {
3518 display_map.remove_blocks(block_ids, cx)
3519 });
3520 }
3521
3522 pub fn longest_row(&self, cx: &mut MutableAppContext) -> u32 {
3523 self.display_map
3524 .update(cx, |map, cx| map.snapshot(cx))
3525 .longest_row()
3526 }
3527
3528 pub fn max_point(&self, cx: &mut MutableAppContext) -> DisplayPoint {
3529 self.display_map
3530 .update(cx, |map, cx| map.snapshot(cx))
3531 .max_point()
3532 }
3533
3534 pub fn text(&self, cx: &AppContext) -> String {
3535 self.buffer.read(cx).read(cx).text()
3536 }
3537
3538 pub fn display_text(&self, cx: &mut MutableAppContext) -> String {
3539 self.display_map
3540 .update(cx, |map, cx| map.snapshot(cx))
3541 .text()
3542 }
3543
3544 pub fn set_wrap_width(&self, width: Option<f32>, cx: &mut MutableAppContext) -> bool {
3545 self.display_map
3546 .update(cx, |map, cx| map.set_wrap_width(width, cx))
3547 }
3548
3549 pub fn set_highlighted_row(&mut self, row: Option<u32>) {
3550 self.highlighted_row = row;
3551 }
3552
3553 pub fn highlighted_row(&mut self) -> Option<u32> {
3554 self.highlighted_row
3555 }
3556
3557 fn next_blink_epoch(&mut self) -> usize {
3558 self.blink_epoch += 1;
3559 self.blink_epoch
3560 }
3561
3562 fn pause_cursor_blinking(&mut self, cx: &mut ViewContext<Self>) {
3563 self.show_local_cursors = true;
3564 cx.notify();
3565
3566 let epoch = self.next_blink_epoch();
3567 cx.spawn(|this, mut cx| {
3568 let this = this.downgrade();
3569 async move {
3570 Timer::after(CURSOR_BLINK_INTERVAL).await;
3571 if let Some(this) = cx.read(|cx| this.upgrade(cx)) {
3572 this.update(&mut cx, |this, cx| this.resume_cursor_blinking(epoch, cx))
3573 }
3574 }
3575 })
3576 .detach();
3577 }
3578
3579 fn resume_cursor_blinking(&mut self, epoch: usize, cx: &mut ViewContext<Self>) {
3580 if epoch == self.blink_epoch {
3581 self.blinking_paused = false;
3582 self.blink_cursors(epoch, cx);
3583 }
3584 }
3585
3586 fn blink_cursors(&mut self, epoch: usize, cx: &mut ViewContext<Self>) {
3587 if epoch == self.blink_epoch && self.focused && !self.blinking_paused {
3588 self.show_local_cursors = !self.show_local_cursors;
3589 cx.notify();
3590
3591 let epoch = self.next_blink_epoch();
3592 cx.spawn(|this, mut cx| {
3593 let this = this.downgrade();
3594 async move {
3595 Timer::after(CURSOR_BLINK_INTERVAL).await;
3596 if let Some(this) = cx.read(|cx| this.upgrade(cx)) {
3597 this.update(&mut cx, |this, cx| this.blink_cursors(epoch, cx));
3598 }
3599 }
3600 })
3601 .detach();
3602 }
3603 }
3604
3605 pub fn show_local_cursors(&self) -> bool {
3606 self.show_local_cursors
3607 }
3608
3609 fn on_buffer_changed(&mut self, _: ModelHandle<MultiBuffer>, cx: &mut ViewContext<Self>) {
3610 self.refresh_active_diagnostics(cx);
3611 cx.notify();
3612 }
3613
3614 fn on_buffer_event(
3615 &mut self,
3616 _: ModelHandle<MultiBuffer>,
3617 event: &language::Event,
3618 cx: &mut ViewContext<Self>,
3619 ) {
3620 match event {
3621 language::Event::Edited => cx.emit(Event::Edited),
3622 language::Event::Dirtied => cx.emit(Event::Dirtied),
3623 language::Event::Saved => cx.emit(Event::Saved),
3624 language::Event::FileHandleChanged => cx.emit(Event::FileHandleChanged),
3625 language::Event::Reloaded => cx.emit(Event::FileHandleChanged),
3626 language::Event::Closed => cx.emit(Event::Closed),
3627 _ => {}
3628 }
3629 }
3630
3631 fn on_display_map_changed(&mut self, _: ModelHandle<DisplayMap>, cx: &mut ViewContext<Self>) {
3632 cx.notify();
3633 }
3634}
3635
3636impl EditorSnapshot {
3637 pub fn is_focused(&self) -> bool {
3638 self.is_focused
3639 }
3640
3641 pub fn placeholder_text(&self) -> Option<&Arc<str>> {
3642 self.placeholder_text.as_ref()
3643 }
3644
3645 pub fn scroll_position(&self) -> Vector2F {
3646 compute_scroll_position(
3647 &self.display_snapshot,
3648 self.scroll_position,
3649 &self.scroll_top_anchor,
3650 )
3651 }
3652}
3653
3654impl Deref for EditorSnapshot {
3655 type Target = DisplaySnapshot;
3656
3657 fn deref(&self) -> &Self::Target {
3658 &self.display_snapshot
3659 }
3660}
3661
3662impl EditorSettings {
3663 #[cfg(any(test, feature = "test-support"))]
3664 pub fn test(cx: &AppContext) -> Self {
3665 Self {
3666 tab_size: 4,
3667 soft_wrap: SoftWrap::None,
3668 style: {
3669 let font_cache: &gpui::FontCache = cx.font_cache();
3670 let font_family_name = Arc::from("Monaco");
3671 let font_properties = Default::default();
3672 let font_family_id = font_cache.load_family(&[&font_family_name]).unwrap();
3673 let font_id = font_cache
3674 .select_font(font_family_id, &font_properties)
3675 .unwrap();
3676 EditorStyle {
3677 text: gpui::fonts::TextStyle {
3678 font_family_name,
3679 font_family_id,
3680 font_id,
3681 font_size: 14.,
3682 color: gpui::color::Color::from_u32(0xff0000ff),
3683 font_properties,
3684 underline: None,
3685 },
3686 placeholder_text: None,
3687 background: Default::default(),
3688 gutter_background: Default::default(),
3689 active_line_background: Default::default(),
3690 highlighted_line_background: Default::default(),
3691 line_number: Default::default(),
3692 line_number_active: Default::default(),
3693 selection: Default::default(),
3694 guest_selections: Default::default(),
3695 syntax: Default::default(),
3696 error_diagnostic: Default::default(),
3697 invalid_error_diagnostic: Default::default(),
3698 warning_diagnostic: Default::default(),
3699 invalid_warning_diagnostic: Default::default(),
3700 information_diagnostic: Default::default(),
3701 invalid_information_diagnostic: Default::default(),
3702 hint_diagnostic: Default::default(),
3703 invalid_hint_diagnostic: Default::default(),
3704 }
3705 },
3706 }
3707 }
3708}
3709
3710fn compute_scroll_position(
3711 snapshot: &DisplaySnapshot,
3712 mut scroll_position: Vector2F,
3713 scroll_top_anchor: &Option<Anchor>,
3714) -> Vector2F {
3715 if let Some(anchor) = scroll_top_anchor {
3716 let scroll_top = anchor.to_display_point(snapshot).row() as f32;
3717 scroll_position.set_y(scroll_top + scroll_position.y());
3718 } else {
3719 scroll_position.set_y(0.);
3720 }
3721 scroll_position
3722}
3723
3724#[derive(Copy, Clone)]
3725pub enum Event {
3726 Activate,
3727 Edited,
3728 Blurred,
3729 Dirtied,
3730 Saved,
3731 FileHandleChanged,
3732 Closed,
3733}
3734
3735impl Entity for Editor {
3736 type Event = Event;
3737}
3738
3739impl View for Editor {
3740 fn render(&mut self, cx: &mut RenderContext<Self>) -> ElementBox {
3741 let settings = (self.build_settings)(cx);
3742 self.display_map.update(cx, |map, cx| {
3743 map.set_font(
3744 settings.style.text.font_id,
3745 settings.style.text.font_size,
3746 cx,
3747 )
3748 });
3749 EditorElement::new(self.handle.clone(), settings).boxed()
3750 }
3751
3752 fn ui_name() -> &'static str {
3753 "Editor"
3754 }
3755
3756 fn on_focus(&mut self, cx: &mut ViewContext<Self>) {
3757 self.focused = true;
3758 self.blink_cursors(self.blink_epoch, cx);
3759 self.buffer.update(cx, |buffer, cx| {
3760 buffer.set_active_selections(&self.selections, cx)
3761 });
3762 }
3763
3764 fn on_blur(&mut self, cx: &mut ViewContext<Self>) {
3765 self.focused = false;
3766 self.show_local_cursors = false;
3767 self.buffer
3768 .update(cx, |buffer, cx| buffer.remove_active_selections(cx));
3769 cx.emit(Event::Blurred);
3770 cx.notify();
3771 }
3772
3773 fn keymap_context(&self, _: &AppContext) -> gpui::keymap::Context {
3774 let mut cx = Self::default_keymap_context();
3775 let mode = match self.mode {
3776 EditorMode::SingleLine => "single_line",
3777 EditorMode::AutoHeight { .. } => "auto_height",
3778 EditorMode::Full => "full",
3779 };
3780 cx.map.insert("mode".into(), mode.into());
3781 cx
3782 }
3783}
3784
3785impl<T: ToPoint + ToOffset> SelectionExt for Selection<T> {
3786 fn point_range(&self, buffer: &MultiBufferSnapshot) -> Range<Point> {
3787 let start = self.start.to_point(buffer);
3788 let end = self.end.to_point(buffer);
3789 if self.reversed {
3790 end..start
3791 } else {
3792 start..end
3793 }
3794 }
3795
3796 fn offset_range(&self, buffer: &MultiBufferSnapshot) -> Range<usize> {
3797 let start = self.start.to_offset(buffer);
3798 let end = self.end.to_offset(buffer);
3799 if self.reversed {
3800 end..start
3801 } else {
3802 start..end
3803 }
3804 }
3805
3806 fn display_range(&self, map: &DisplaySnapshot) -> Range<DisplayPoint> {
3807 let start = self
3808 .start
3809 .to_point(&map.buffer_snapshot)
3810 .to_display_point(map);
3811 let end = self
3812 .end
3813 .to_point(&map.buffer_snapshot)
3814 .to_display_point(map);
3815 if self.reversed {
3816 end..start
3817 } else {
3818 start..end
3819 }
3820 }
3821
3822 fn spanned_rows(
3823 &self,
3824 include_end_if_at_line_start: bool,
3825 map: &DisplaySnapshot,
3826 ) -> Range<u32> {
3827 let start = self.start.to_point(&map.buffer_snapshot);
3828 let mut end = self.end.to_point(&map.buffer_snapshot);
3829 if !include_end_if_at_line_start && start.row != end.row && end.column == 0 {
3830 end.row -= 1;
3831 }
3832
3833 let buffer_start = map.prev_line_boundary(start).0;
3834 let buffer_end = map.next_line_boundary(end).0;
3835 buffer_start.row..buffer_end.row + 1
3836 }
3837}
3838
3839pub fn diagnostic_block_renderer(
3840 diagnostic: Diagnostic,
3841 is_valid: bool,
3842 build_settings: BuildSettings,
3843) -> RenderBlock {
3844 Arc::new(move |cx: &BlockContext| {
3845 let settings = build_settings(cx);
3846 let mut text_style = settings.style.text.clone();
3847 text_style.color = diagnostic_style(diagnostic.severity, is_valid, &settings.style).text;
3848 Text::new(diagnostic.message.clone(), text_style)
3849 .with_soft_wrap(false)
3850 .contained()
3851 .with_margin_left(cx.anchor_x)
3852 .boxed()
3853 })
3854}
3855
3856pub fn diagnostic_header_renderer(
3857 buffer: ModelHandle<Buffer>,
3858 diagnostic: Diagnostic,
3859 is_valid: bool,
3860 build_settings: BuildSettings,
3861) -> RenderBlock {
3862 Arc::new(move |cx| {
3863 let settings = build_settings(cx);
3864 let mut text_style = settings.style.text.clone();
3865 let diagnostic_style = diagnostic_style(diagnostic.severity, is_valid, &settings.style);
3866 text_style.color = diagnostic_style.text;
3867 let file_path = if let Some(file) = buffer.read(&**cx).file() {
3868 file.path().to_string_lossy().to_string()
3869 } else {
3870 "untitled".to_string()
3871 };
3872
3873 Flex::column()
3874 .with_child(
3875 Text::new(diagnostic.message.clone(), text_style)
3876 .with_soft_wrap(false)
3877 .boxed(),
3878 )
3879 .with_child(Label::new(file_path, settings.style.text.clone()).boxed())
3880 .aligned()
3881 .left()
3882 .contained()
3883 .with_style(diagnostic_style.header)
3884 .expanded()
3885 .boxed()
3886 })
3887}
3888
3889pub fn context_header_renderer(build_settings: BuildSettings) -> RenderBlock {
3890 Arc::new(move |cx| {
3891 let settings = build_settings(cx);
3892 let text_style = settings.style.text.clone();
3893 Label::new("...".to_string(), text_style).boxed()
3894 })
3895}
3896
3897pub fn diagnostic_style(
3898 severity: DiagnosticSeverity,
3899 valid: bool,
3900 style: &EditorStyle,
3901) -> DiagnosticStyle {
3902 match (severity, valid) {
3903 (DiagnosticSeverity::ERROR, true) => style.error_diagnostic,
3904 (DiagnosticSeverity::ERROR, false) => style.invalid_error_diagnostic,
3905 (DiagnosticSeverity::WARNING, true) => style.warning_diagnostic,
3906 (DiagnosticSeverity::WARNING, false) => style.invalid_warning_diagnostic,
3907 (DiagnosticSeverity::INFORMATION, true) => style.information_diagnostic,
3908 (DiagnosticSeverity::INFORMATION, false) => style.invalid_information_diagnostic,
3909 (DiagnosticSeverity::HINT, true) => style.hint_diagnostic,
3910 (DiagnosticSeverity::HINT, false) => style.invalid_hint_diagnostic,
3911 _ => Default::default(),
3912 }
3913}
3914
3915pub fn settings_builder(
3916 buffer: WeakModelHandle<MultiBuffer>,
3917 settings: watch::Receiver<workspace::Settings>,
3918) -> BuildSettings {
3919 Arc::new(move |cx| {
3920 let settings = settings.borrow();
3921 let font_cache = cx.font_cache();
3922 let font_family_id = settings.buffer_font_family;
3923 let font_family_name = cx.font_cache().family_name(font_family_id).unwrap();
3924 let font_properties = Default::default();
3925 let font_id = font_cache
3926 .select_font(font_family_id, &font_properties)
3927 .unwrap();
3928 let font_size = settings.buffer_font_size;
3929
3930 let mut theme = settings.theme.editor.clone();
3931 theme.text = TextStyle {
3932 color: theme.text.color,
3933 font_family_name,
3934 font_family_id,
3935 font_id,
3936 font_size,
3937 font_properties,
3938 underline: None,
3939 };
3940 let language = buffer.upgrade(cx).and_then(|buf| buf.read(cx).language(cx));
3941 let soft_wrap = match settings.soft_wrap(language) {
3942 workspace::settings::SoftWrap::None => SoftWrap::None,
3943 workspace::settings::SoftWrap::EditorWidth => SoftWrap::EditorWidth,
3944 workspace::settings::SoftWrap::PreferredLineLength => {
3945 SoftWrap::Column(settings.preferred_line_length(language).saturating_sub(1))
3946 }
3947 };
3948
3949 EditorSettings {
3950 tab_size: settings.tab_size,
3951 soft_wrap,
3952 style: theme,
3953 }
3954 })
3955}
3956
3957#[cfg(test)]
3958mod tests {
3959 use super::*;
3960 use language::LanguageConfig;
3961 use std::time::Instant;
3962 use text::Point;
3963 use unindent::Unindent;
3964 use util::test::sample_text;
3965
3966 #[gpui::test]
3967 fn test_undo_redo_with_selection_restoration(cx: &mut MutableAppContext) {
3968 let mut now = Instant::now();
3969 let buffer = cx.add_model(|cx| language::Buffer::new(0, "123456", cx));
3970 let group_interval = buffer.read(cx).transaction_group_interval();
3971 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
3972 let settings = EditorSettings::test(cx);
3973 let (_, editor) = cx.add_window(Default::default(), |cx| {
3974 build_editor(buffer.clone(), settings, cx)
3975 });
3976
3977 editor.update(cx, |editor, cx| {
3978 editor.start_transaction_at(now, cx);
3979 editor.select_ranges([2..4], None, cx);
3980 editor.insert("cd", cx);
3981 editor.end_transaction_at(now, cx);
3982 assert_eq!(editor.text(cx), "12cd56");
3983 assert_eq!(editor.selected_ranges(cx), vec![4..4]);
3984
3985 editor.start_transaction_at(now, cx);
3986 editor.select_ranges([4..5], None, cx);
3987 editor.insert("e", cx);
3988 editor.end_transaction_at(now, cx);
3989 assert_eq!(editor.text(cx), "12cde6");
3990 assert_eq!(editor.selected_ranges(cx), vec![5..5]);
3991
3992 now += group_interval + Duration::from_millis(1);
3993 editor.select_ranges([2..2], None, cx);
3994
3995 // Simulate an edit in another editor
3996 buffer.update(cx, |buffer, cx| {
3997 buffer.start_transaction_at(now, cx);
3998 buffer.edit([0..1], "a", cx);
3999 buffer.edit([1..1], "b", cx);
4000 buffer.end_transaction_at(now, cx);
4001 });
4002
4003 assert_eq!(editor.text(cx), "ab2cde6");
4004 assert_eq!(editor.selected_ranges(cx), vec![3..3]);
4005
4006 // Last transaction happened past the group interval in a different editor.
4007 // Undo it individually and don't restore selections.
4008 editor.undo(&Undo, cx);
4009 assert_eq!(editor.text(cx), "12cde6");
4010 assert_eq!(editor.selected_ranges(cx), vec![2..2]);
4011
4012 // First two transactions happened within the group interval in this editor.
4013 // Undo them together and restore selections.
4014 editor.undo(&Undo, cx);
4015 editor.undo(&Undo, cx); // Undo stack is empty here, so this is a no-op.
4016 assert_eq!(editor.text(cx), "123456");
4017 assert_eq!(editor.selected_ranges(cx), vec![0..0]);
4018
4019 // Redo the first two transactions together.
4020 editor.redo(&Redo, cx);
4021 assert_eq!(editor.text(cx), "12cde6");
4022 assert_eq!(editor.selected_ranges(cx), vec![5..5]);
4023
4024 // Redo the last transaction on its own.
4025 editor.redo(&Redo, cx);
4026 assert_eq!(editor.text(cx), "ab2cde6");
4027 assert_eq!(editor.selected_ranges(cx), vec![6..6]);
4028
4029 // Test empty transactions.
4030 editor.start_transaction_at(now, cx);
4031 editor.end_transaction_at(now, cx);
4032 editor.undo(&Undo, cx);
4033 assert_eq!(editor.text(cx), "12cde6");
4034 });
4035 }
4036
4037 #[gpui::test]
4038 fn test_selection_with_mouse(cx: &mut gpui::MutableAppContext) {
4039 let buffer = MultiBuffer::build_simple("aaaaaa\nbbbbbb\ncccccc\ndddddd\n", cx);
4040 let settings = EditorSettings::test(cx);
4041 let (_, editor) =
4042 cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
4043
4044 editor.update(cx, |view, cx| {
4045 view.begin_selection(DisplayPoint::new(2, 2), false, 1, cx);
4046 });
4047
4048 assert_eq!(
4049 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
4050 [DisplayPoint::new(2, 2)..DisplayPoint::new(2, 2)]
4051 );
4052
4053 editor.update(cx, |view, cx| {
4054 view.update_selection(DisplayPoint::new(3, 3), 0, Vector2F::zero(), cx);
4055 });
4056
4057 assert_eq!(
4058 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
4059 [DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3)]
4060 );
4061
4062 editor.update(cx, |view, cx| {
4063 view.update_selection(DisplayPoint::new(1, 1), 0, Vector2F::zero(), cx);
4064 });
4065
4066 assert_eq!(
4067 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
4068 [DisplayPoint::new(2, 2)..DisplayPoint::new(1, 1)]
4069 );
4070
4071 editor.update(cx, |view, cx| {
4072 view.end_selection(cx);
4073 view.update_selection(DisplayPoint::new(3, 3), 0, Vector2F::zero(), cx);
4074 });
4075
4076 assert_eq!(
4077 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
4078 [DisplayPoint::new(2, 2)..DisplayPoint::new(1, 1)]
4079 );
4080
4081 editor.update(cx, |view, cx| {
4082 view.begin_selection(DisplayPoint::new(3, 3), true, 1, cx);
4083 view.update_selection(DisplayPoint::new(0, 0), 0, Vector2F::zero(), cx);
4084 });
4085
4086 assert_eq!(
4087 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
4088 [
4089 DisplayPoint::new(2, 2)..DisplayPoint::new(1, 1),
4090 DisplayPoint::new(3, 3)..DisplayPoint::new(0, 0)
4091 ]
4092 );
4093
4094 editor.update(cx, |view, cx| {
4095 view.end_selection(cx);
4096 });
4097
4098 assert_eq!(
4099 editor.update(cx, |view, cx| view.selected_display_ranges(cx)),
4100 [DisplayPoint::new(3, 3)..DisplayPoint::new(0, 0)]
4101 );
4102 }
4103
4104 #[gpui::test]
4105 fn test_canceling_pending_selection(cx: &mut gpui::MutableAppContext) {
4106 let buffer = MultiBuffer::build_simple("aaaaaa\nbbbbbb\ncccccc\ndddddd\n", cx);
4107 let settings = EditorSettings::test(cx);
4108 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
4109
4110 view.update(cx, |view, cx| {
4111 view.begin_selection(DisplayPoint::new(2, 2), false, 1, cx);
4112 assert_eq!(
4113 view.selected_display_ranges(cx),
4114 [DisplayPoint::new(2, 2)..DisplayPoint::new(2, 2)]
4115 );
4116 });
4117
4118 view.update(cx, |view, cx| {
4119 view.update_selection(DisplayPoint::new(3, 3), 0, Vector2F::zero(), cx);
4120 assert_eq!(
4121 view.selected_display_ranges(cx),
4122 [DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3)]
4123 );
4124 });
4125
4126 view.update(cx, |view, cx| {
4127 view.cancel(&Cancel, cx);
4128 view.update_selection(DisplayPoint::new(1, 1), 0, Vector2F::zero(), cx);
4129 assert_eq!(
4130 view.selected_display_ranges(cx),
4131 [DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3)]
4132 );
4133 });
4134 }
4135
4136 #[gpui::test]
4137 fn test_cancel(cx: &mut gpui::MutableAppContext) {
4138 let buffer = MultiBuffer::build_simple("aaaaaa\nbbbbbb\ncccccc\ndddddd\n", cx);
4139 let settings = EditorSettings::test(cx);
4140 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
4141
4142 view.update(cx, |view, cx| {
4143 view.begin_selection(DisplayPoint::new(3, 4), false, 1, cx);
4144 view.update_selection(DisplayPoint::new(1, 1), 0, Vector2F::zero(), cx);
4145 view.end_selection(cx);
4146
4147 view.begin_selection(DisplayPoint::new(0, 1), true, 1, cx);
4148 view.update_selection(DisplayPoint::new(0, 3), 0, Vector2F::zero(), cx);
4149 view.end_selection(cx);
4150 assert_eq!(
4151 view.selected_display_ranges(cx),
4152 [
4153 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
4154 DisplayPoint::new(3, 4)..DisplayPoint::new(1, 1),
4155 ]
4156 );
4157 });
4158
4159 view.update(cx, |view, cx| {
4160 view.cancel(&Cancel, cx);
4161 assert_eq!(
4162 view.selected_display_ranges(cx),
4163 [DisplayPoint::new(3, 4)..DisplayPoint::new(1, 1)]
4164 );
4165 });
4166
4167 view.update(cx, |view, cx| {
4168 view.cancel(&Cancel, cx);
4169 assert_eq!(
4170 view.selected_display_ranges(cx),
4171 [DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1)]
4172 );
4173 });
4174 }
4175
4176 #[gpui::test]
4177 fn test_fold(cx: &mut gpui::MutableAppContext) {
4178 let buffer = MultiBuffer::build_simple(
4179 &"
4180 impl Foo {
4181 // Hello!
4182
4183 fn a() {
4184 1
4185 }
4186
4187 fn b() {
4188 2
4189 }
4190
4191 fn c() {
4192 3
4193 }
4194 }
4195 "
4196 .unindent(),
4197 cx,
4198 );
4199 let settings = EditorSettings::test(&cx);
4200 let (_, view) = cx.add_window(Default::default(), |cx| {
4201 build_editor(buffer.clone(), settings, cx)
4202 });
4203
4204 view.update(cx, |view, cx| {
4205 view.select_display_ranges(&[DisplayPoint::new(8, 0)..DisplayPoint::new(12, 0)], cx)
4206 .unwrap();
4207 view.fold(&Fold, cx);
4208 assert_eq!(
4209 view.display_text(cx),
4210 "
4211 impl Foo {
4212 // Hello!
4213
4214 fn a() {
4215 1
4216 }
4217
4218 fn b() {…
4219 }
4220
4221 fn c() {…
4222 }
4223 }
4224 "
4225 .unindent(),
4226 );
4227
4228 view.fold(&Fold, cx);
4229 assert_eq!(
4230 view.display_text(cx),
4231 "
4232 impl Foo {…
4233 }
4234 "
4235 .unindent(),
4236 );
4237
4238 view.unfold(&Unfold, cx);
4239 assert_eq!(
4240 view.display_text(cx),
4241 "
4242 impl Foo {
4243 // Hello!
4244
4245 fn a() {
4246 1
4247 }
4248
4249 fn b() {…
4250 }
4251
4252 fn c() {…
4253 }
4254 }
4255 "
4256 .unindent(),
4257 );
4258
4259 view.unfold(&Unfold, cx);
4260 assert_eq!(view.display_text(cx), buffer.read(cx).read(cx).text());
4261 });
4262 }
4263
4264 #[gpui::test]
4265 fn test_move_cursor(cx: &mut gpui::MutableAppContext) {
4266 let buffer = MultiBuffer::build_simple(&sample_text(6, 6, 'a'), cx);
4267 let settings = EditorSettings::test(&cx);
4268 let (_, view) = cx.add_window(Default::default(), |cx| {
4269 build_editor(buffer.clone(), settings, cx)
4270 });
4271
4272 buffer.update(cx, |buffer, cx| {
4273 buffer.edit(
4274 vec![
4275 Point::new(1, 0)..Point::new(1, 0),
4276 Point::new(1, 1)..Point::new(1, 1),
4277 ],
4278 "\t",
4279 cx,
4280 );
4281 });
4282
4283 view.update(cx, |view, cx| {
4284 assert_eq!(
4285 view.selected_display_ranges(cx),
4286 &[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)]
4287 );
4288
4289 view.move_down(&MoveDown, cx);
4290 assert_eq!(
4291 view.selected_display_ranges(cx),
4292 &[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)]
4293 );
4294
4295 view.move_right(&MoveRight, cx);
4296 assert_eq!(
4297 view.selected_display_ranges(cx),
4298 &[DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4)]
4299 );
4300
4301 view.move_left(&MoveLeft, cx);
4302 assert_eq!(
4303 view.selected_display_ranges(cx),
4304 &[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)]
4305 );
4306
4307 view.move_up(&MoveUp, cx);
4308 assert_eq!(
4309 view.selected_display_ranges(cx),
4310 &[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)]
4311 );
4312
4313 view.move_to_end(&MoveToEnd, cx);
4314 assert_eq!(
4315 view.selected_display_ranges(cx),
4316 &[DisplayPoint::new(5, 6)..DisplayPoint::new(5, 6)]
4317 );
4318
4319 view.move_to_beginning(&MoveToBeginning, cx);
4320 assert_eq!(
4321 view.selected_display_ranges(cx),
4322 &[DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0)]
4323 );
4324
4325 view.select_display_ranges(&[DisplayPoint::new(0, 1)..DisplayPoint::new(0, 2)], cx)
4326 .unwrap();
4327 view.select_to_beginning(&SelectToBeginning, cx);
4328 assert_eq!(
4329 view.selected_display_ranges(cx),
4330 &[DisplayPoint::new(0, 1)..DisplayPoint::new(0, 0)]
4331 );
4332
4333 view.select_to_end(&SelectToEnd, cx);
4334 assert_eq!(
4335 view.selected_display_ranges(cx),
4336 &[DisplayPoint::new(0, 1)..DisplayPoint::new(5, 6)]
4337 );
4338 });
4339 }
4340
4341 #[gpui::test]
4342 fn test_move_cursor_multibyte(cx: &mut gpui::MutableAppContext) {
4343 let buffer = MultiBuffer::build_simple("ⓐⓑⓒⓓⓔ\nabcde\nαβγδε\n", cx);
4344 let settings = EditorSettings::test(&cx);
4345 let (_, view) = cx.add_window(Default::default(), |cx| {
4346 build_editor(buffer.clone(), settings, cx)
4347 });
4348
4349 assert_eq!('ⓐ'.len_utf8(), 3);
4350 assert_eq!('α'.len_utf8(), 2);
4351
4352 view.update(cx, |view, cx| {
4353 view.fold_ranges(
4354 vec![
4355 Point::new(0, 6)..Point::new(0, 12),
4356 Point::new(1, 2)..Point::new(1, 4),
4357 Point::new(2, 4)..Point::new(2, 8),
4358 ],
4359 cx,
4360 );
4361 assert_eq!(view.display_text(cx), "ⓐⓑ…ⓔ\nab…e\nαβ…ε\n");
4362
4363 view.move_right(&MoveRight, cx);
4364 assert_eq!(
4365 view.selected_display_ranges(cx),
4366 &[empty_range(0, "ⓐ".len())]
4367 );
4368 view.move_right(&MoveRight, cx);
4369 assert_eq!(
4370 view.selected_display_ranges(cx),
4371 &[empty_range(0, "ⓐⓑ".len())]
4372 );
4373 view.move_right(&MoveRight, cx);
4374 assert_eq!(
4375 view.selected_display_ranges(cx),
4376 &[empty_range(0, "ⓐⓑ…".len())]
4377 );
4378
4379 view.move_down(&MoveDown, cx);
4380 assert_eq!(
4381 view.selected_display_ranges(cx),
4382 &[empty_range(1, "ab…".len())]
4383 );
4384 view.move_left(&MoveLeft, cx);
4385 assert_eq!(
4386 view.selected_display_ranges(cx),
4387 &[empty_range(1, "ab".len())]
4388 );
4389 view.move_left(&MoveLeft, cx);
4390 assert_eq!(
4391 view.selected_display_ranges(cx),
4392 &[empty_range(1, "a".len())]
4393 );
4394
4395 view.move_down(&MoveDown, cx);
4396 assert_eq!(
4397 view.selected_display_ranges(cx),
4398 &[empty_range(2, "α".len())]
4399 );
4400 view.move_right(&MoveRight, cx);
4401 assert_eq!(
4402 view.selected_display_ranges(cx),
4403 &[empty_range(2, "αβ".len())]
4404 );
4405 view.move_right(&MoveRight, cx);
4406 assert_eq!(
4407 view.selected_display_ranges(cx),
4408 &[empty_range(2, "αβ…".len())]
4409 );
4410 view.move_right(&MoveRight, cx);
4411 assert_eq!(
4412 view.selected_display_ranges(cx),
4413 &[empty_range(2, "αβ…ε".len())]
4414 );
4415
4416 view.move_up(&MoveUp, cx);
4417 assert_eq!(
4418 view.selected_display_ranges(cx),
4419 &[empty_range(1, "ab…e".len())]
4420 );
4421 view.move_up(&MoveUp, cx);
4422 assert_eq!(
4423 view.selected_display_ranges(cx),
4424 &[empty_range(0, "ⓐⓑ…ⓔ".len())]
4425 );
4426 view.move_left(&MoveLeft, cx);
4427 assert_eq!(
4428 view.selected_display_ranges(cx),
4429 &[empty_range(0, "ⓐⓑ…".len())]
4430 );
4431 view.move_left(&MoveLeft, cx);
4432 assert_eq!(
4433 view.selected_display_ranges(cx),
4434 &[empty_range(0, "ⓐⓑ".len())]
4435 );
4436 view.move_left(&MoveLeft, cx);
4437 assert_eq!(
4438 view.selected_display_ranges(cx),
4439 &[empty_range(0, "ⓐ".len())]
4440 );
4441 });
4442 }
4443
4444 #[gpui::test]
4445 fn test_move_cursor_different_line_lengths(cx: &mut gpui::MutableAppContext) {
4446 let buffer = MultiBuffer::build_simple("ⓐⓑⓒⓓⓔ\nabcd\nαβγ\nabcd\nⓐⓑⓒⓓⓔ\n", cx);
4447 let settings = EditorSettings::test(&cx);
4448 let (_, view) = cx.add_window(Default::default(), |cx| {
4449 build_editor(buffer.clone(), settings, cx)
4450 });
4451 view.update(cx, |view, cx| {
4452 view.select_display_ranges(&[empty_range(0, "ⓐⓑⓒⓓⓔ".len())], cx)
4453 .unwrap();
4454
4455 view.move_down(&MoveDown, cx);
4456 assert_eq!(
4457 view.selected_display_ranges(cx),
4458 &[empty_range(1, "abcd".len())]
4459 );
4460
4461 view.move_down(&MoveDown, cx);
4462 assert_eq!(
4463 view.selected_display_ranges(cx),
4464 &[empty_range(2, "αβγ".len())]
4465 );
4466
4467 view.move_down(&MoveDown, cx);
4468 assert_eq!(
4469 view.selected_display_ranges(cx),
4470 &[empty_range(3, "abcd".len())]
4471 );
4472
4473 view.move_down(&MoveDown, cx);
4474 assert_eq!(
4475 view.selected_display_ranges(cx),
4476 &[empty_range(4, "ⓐⓑⓒⓓⓔ".len())]
4477 );
4478
4479 view.move_up(&MoveUp, cx);
4480 assert_eq!(
4481 view.selected_display_ranges(cx),
4482 &[empty_range(3, "abcd".len())]
4483 );
4484
4485 view.move_up(&MoveUp, cx);
4486 assert_eq!(
4487 view.selected_display_ranges(cx),
4488 &[empty_range(2, "αβγ".len())]
4489 );
4490 });
4491 }
4492
4493 #[gpui::test]
4494 fn test_beginning_end_of_line(cx: &mut gpui::MutableAppContext) {
4495 let buffer = MultiBuffer::build_simple("abc\n def", cx);
4496 let settings = EditorSettings::test(&cx);
4497 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
4498 view.update(cx, |view, cx| {
4499 view.select_display_ranges(
4500 &[
4501 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
4502 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4),
4503 ],
4504 cx,
4505 )
4506 .unwrap();
4507 });
4508
4509 view.update(cx, |view, cx| {
4510 view.move_to_beginning_of_line(&MoveToBeginningOfLine, cx);
4511 assert_eq!(
4512 view.selected_display_ranges(cx),
4513 &[
4514 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
4515 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
4516 ]
4517 );
4518 });
4519
4520 view.update(cx, |view, cx| {
4521 view.move_to_beginning_of_line(&MoveToBeginningOfLine, cx);
4522 assert_eq!(
4523 view.selected_display_ranges(cx),
4524 &[
4525 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
4526 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
4527 ]
4528 );
4529 });
4530
4531 view.update(cx, |view, cx| {
4532 view.move_to_beginning_of_line(&MoveToBeginningOfLine, cx);
4533 assert_eq!(
4534 view.selected_display_ranges(cx),
4535 &[
4536 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
4537 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
4538 ]
4539 );
4540 });
4541
4542 view.update(cx, |view, cx| {
4543 view.move_to_end_of_line(&MoveToEndOfLine, cx);
4544 assert_eq!(
4545 view.selected_display_ranges(cx),
4546 &[
4547 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
4548 DisplayPoint::new(1, 5)..DisplayPoint::new(1, 5),
4549 ]
4550 );
4551 });
4552
4553 // Moving to the end of line again is a no-op.
4554 view.update(cx, |view, cx| {
4555 view.move_to_end_of_line(&MoveToEndOfLine, cx);
4556 assert_eq!(
4557 view.selected_display_ranges(cx),
4558 &[
4559 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
4560 DisplayPoint::new(1, 5)..DisplayPoint::new(1, 5),
4561 ]
4562 );
4563 });
4564
4565 view.update(cx, |view, cx| {
4566 view.move_left(&MoveLeft, cx);
4567 view.select_to_beginning_of_line(&SelectToBeginningOfLine(true), cx);
4568 assert_eq!(
4569 view.selected_display_ranges(cx),
4570 &[
4571 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 0),
4572 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 2),
4573 ]
4574 );
4575 });
4576
4577 view.update(cx, |view, cx| {
4578 view.select_to_beginning_of_line(&SelectToBeginningOfLine(true), cx);
4579 assert_eq!(
4580 view.selected_display_ranges(cx),
4581 &[
4582 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 0),
4583 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 0),
4584 ]
4585 );
4586 });
4587
4588 view.update(cx, |view, cx| {
4589 view.select_to_beginning_of_line(&SelectToBeginningOfLine(true), cx);
4590 assert_eq!(
4591 view.selected_display_ranges(cx),
4592 &[
4593 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 0),
4594 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 2),
4595 ]
4596 );
4597 });
4598
4599 view.update(cx, |view, cx| {
4600 view.select_to_end_of_line(&SelectToEndOfLine, cx);
4601 assert_eq!(
4602 view.selected_display_ranges(cx),
4603 &[
4604 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 3),
4605 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 5),
4606 ]
4607 );
4608 });
4609
4610 view.update(cx, |view, cx| {
4611 view.delete_to_end_of_line(&DeleteToEndOfLine, cx);
4612 assert_eq!(view.display_text(cx), "ab\n de");
4613 assert_eq!(
4614 view.selected_display_ranges(cx),
4615 &[
4616 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
4617 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4),
4618 ]
4619 );
4620 });
4621
4622 view.update(cx, |view, cx| {
4623 view.delete_to_beginning_of_line(&DeleteToBeginningOfLine, cx);
4624 assert_eq!(view.display_text(cx), "\n");
4625 assert_eq!(
4626 view.selected_display_ranges(cx),
4627 &[
4628 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
4629 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
4630 ]
4631 );
4632 });
4633 }
4634
4635 #[gpui::test]
4636 fn test_prev_next_word_boundary(cx: &mut gpui::MutableAppContext) {
4637 let buffer = MultiBuffer::build_simple("use std::str::{foo, bar}\n\n {baz.qux()}", cx);
4638 let settings = EditorSettings::test(&cx);
4639 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
4640 view.update(cx, |view, cx| {
4641 view.select_display_ranges(
4642 &[
4643 DisplayPoint::new(0, 11)..DisplayPoint::new(0, 11),
4644 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 4),
4645 ],
4646 cx,
4647 )
4648 .unwrap();
4649 });
4650
4651 view.update(cx, |view, cx| {
4652 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
4653 assert_eq!(
4654 view.selected_display_ranges(cx),
4655 &[
4656 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 9),
4657 DisplayPoint::new(2, 3)..DisplayPoint::new(2, 3),
4658 ]
4659 );
4660 });
4661
4662 view.update(cx, |view, cx| {
4663 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
4664 assert_eq!(
4665 view.selected_display_ranges(cx),
4666 &[
4667 DisplayPoint::new(0, 7)..DisplayPoint::new(0, 7),
4668 DisplayPoint::new(2, 2)..DisplayPoint::new(2, 2),
4669 ]
4670 );
4671 });
4672
4673 view.update(cx, |view, cx| {
4674 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
4675 assert_eq!(
4676 view.selected_display_ranges(cx),
4677 &[
4678 DisplayPoint::new(0, 4)..DisplayPoint::new(0, 4),
4679 DisplayPoint::new(2, 0)..DisplayPoint::new(2, 0),
4680 ]
4681 );
4682 });
4683
4684 view.update(cx, |view, cx| {
4685 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
4686 assert_eq!(
4687 view.selected_display_ranges(cx),
4688 &[
4689 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
4690 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
4691 ]
4692 );
4693 });
4694
4695 view.update(cx, |view, cx| {
4696 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
4697 assert_eq!(
4698 view.selected_display_ranges(cx),
4699 &[
4700 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
4701 DisplayPoint::new(0, 23)..DisplayPoint::new(0, 23),
4702 ]
4703 );
4704 });
4705
4706 view.update(cx, |view, cx| {
4707 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
4708 assert_eq!(
4709 view.selected_display_ranges(cx),
4710 &[
4711 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
4712 DisplayPoint::new(0, 24)..DisplayPoint::new(0, 24),
4713 ]
4714 );
4715 });
4716
4717 view.update(cx, |view, cx| {
4718 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
4719 assert_eq!(
4720 view.selected_display_ranges(cx),
4721 &[
4722 DisplayPoint::new(0, 7)..DisplayPoint::new(0, 7),
4723 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
4724 ]
4725 );
4726 });
4727
4728 view.update(cx, |view, cx| {
4729 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
4730 assert_eq!(
4731 view.selected_display_ranges(cx),
4732 &[
4733 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 9),
4734 DisplayPoint::new(2, 3)..DisplayPoint::new(2, 3),
4735 ]
4736 );
4737 });
4738
4739 view.update(cx, |view, cx| {
4740 view.move_right(&MoveRight, cx);
4741 view.select_to_previous_word_boundary(&SelectToPreviousWordBoundary, cx);
4742 assert_eq!(
4743 view.selected_display_ranges(cx),
4744 &[
4745 DisplayPoint::new(0, 10)..DisplayPoint::new(0, 9),
4746 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 3),
4747 ]
4748 );
4749 });
4750
4751 view.update(cx, |view, cx| {
4752 view.select_to_previous_word_boundary(&SelectToPreviousWordBoundary, cx);
4753 assert_eq!(
4754 view.selected_display_ranges(cx),
4755 &[
4756 DisplayPoint::new(0, 10)..DisplayPoint::new(0, 7),
4757 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 2),
4758 ]
4759 );
4760 });
4761
4762 view.update(cx, |view, cx| {
4763 view.select_to_next_word_boundary(&SelectToNextWordBoundary, cx);
4764 assert_eq!(
4765 view.selected_display_ranges(cx),
4766 &[
4767 DisplayPoint::new(0, 10)..DisplayPoint::new(0, 9),
4768 DisplayPoint::new(2, 4)..DisplayPoint::new(2, 3),
4769 ]
4770 );
4771 });
4772 }
4773
4774 #[gpui::test]
4775 fn test_prev_next_word_bounds_with_soft_wrap(cx: &mut gpui::MutableAppContext) {
4776 let buffer = MultiBuffer::build_simple("use one::{\n two::three::four::five\n};", cx);
4777 let settings = EditorSettings::test(&cx);
4778 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
4779
4780 view.update(cx, |view, cx| {
4781 view.set_wrap_width(Some(140.), cx);
4782 assert_eq!(
4783 view.display_text(cx),
4784 "use one::{\n two::three::\n four::five\n};"
4785 );
4786
4787 view.select_display_ranges(&[DisplayPoint::new(1, 7)..DisplayPoint::new(1, 7)], cx)
4788 .unwrap();
4789
4790 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
4791 assert_eq!(
4792 view.selected_display_ranges(cx),
4793 &[DisplayPoint::new(1, 9)..DisplayPoint::new(1, 9)]
4794 );
4795
4796 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
4797 assert_eq!(
4798 view.selected_display_ranges(cx),
4799 &[DisplayPoint::new(1, 14)..DisplayPoint::new(1, 14)]
4800 );
4801
4802 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
4803 assert_eq!(
4804 view.selected_display_ranges(cx),
4805 &[DisplayPoint::new(2, 4)..DisplayPoint::new(2, 4)]
4806 );
4807
4808 view.move_to_next_word_boundary(&MoveToNextWordBoundary, cx);
4809 assert_eq!(
4810 view.selected_display_ranges(cx),
4811 &[DisplayPoint::new(2, 8)..DisplayPoint::new(2, 8)]
4812 );
4813
4814 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
4815 assert_eq!(
4816 view.selected_display_ranges(cx),
4817 &[DisplayPoint::new(2, 4)..DisplayPoint::new(2, 4)]
4818 );
4819
4820 view.move_to_previous_word_boundary(&MoveToPreviousWordBoundary, cx);
4821 assert_eq!(
4822 view.selected_display_ranges(cx),
4823 &[DisplayPoint::new(1, 14)..DisplayPoint::new(1, 14)]
4824 );
4825 });
4826 }
4827
4828 #[gpui::test]
4829 fn test_delete_to_word_boundary(cx: &mut gpui::MutableAppContext) {
4830 let buffer = MultiBuffer::build_simple("one two three four", cx);
4831 let settings = EditorSettings::test(&cx);
4832 let (_, view) = cx.add_window(Default::default(), |cx| {
4833 build_editor(buffer.clone(), settings, cx)
4834 });
4835
4836 view.update(cx, |view, cx| {
4837 view.select_display_ranges(
4838 &[
4839 // an empty selection - the preceding word fragment is deleted
4840 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
4841 // characters selected - they are deleted
4842 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 12),
4843 ],
4844 cx,
4845 )
4846 .unwrap();
4847 view.delete_to_previous_word_boundary(&DeleteToPreviousWordBoundary, cx);
4848 });
4849
4850 assert_eq!(buffer.read(cx).read(cx).text(), "e two te four");
4851
4852 view.update(cx, |view, cx| {
4853 view.select_display_ranges(
4854 &[
4855 // an empty selection - the following word fragment is deleted
4856 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
4857 // characters selected - they are deleted
4858 DisplayPoint::new(0, 9)..DisplayPoint::new(0, 10),
4859 ],
4860 cx,
4861 )
4862 .unwrap();
4863 view.delete_to_next_word_boundary(&DeleteToNextWordBoundary, cx);
4864 });
4865
4866 assert_eq!(buffer.read(cx).read(cx).text(), "e t te our");
4867 }
4868
4869 #[gpui::test]
4870 fn test_newline(cx: &mut gpui::MutableAppContext) {
4871 let buffer = MultiBuffer::build_simple("aaaa\n bbbb\n", cx);
4872 let settings = EditorSettings::test(&cx);
4873 let (_, view) = cx.add_window(Default::default(), |cx| {
4874 build_editor(buffer.clone(), settings, cx)
4875 });
4876
4877 view.update(cx, |view, cx| {
4878 view.select_display_ranges(
4879 &[
4880 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
4881 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
4882 DisplayPoint::new(1, 6)..DisplayPoint::new(1, 6),
4883 ],
4884 cx,
4885 )
4886 .unwrap();
4887
4888 view.newline(&Newline, cx);
4889 assert_eq!(view.text(cx), "aa\naa\n \n bb\n bb\n");
4890 });
4891 }
4892
4893 #[gpui::test]
4894 fn test_indent_outdent(cx: &mut gpui::MutableAppContext) {
4895 let buffer = MultiBuffer::build_simple(" one two\nthree\n four", cx);
4896 let settings = EditorSettings::test(&cx);
4897 let (_, view) = cx.add_window(Default::default(), |cx| {
4898 build_editor(buffer.clone(), settings, cx)
4899 });
4900
4901 view.update(cx, |view, cx| {
4902 // two selections on the same line
4903 view.select_display_ranges(
4904 &[
4905 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 5),
4906 DisplayPoint::new(0, 6)..DisplayPoint::new(0, 9),
4907 ],
4908 cx,
4909 )
4910 .unwrap();
4911
4912 // indent from mid-tabstop to full tabstop
4913 view.tab(&Tab, cx);
4914 assert_eq!(view.text(cx), " one two\nthree\n four");
4915 assert_eq!(
4916 view.selected_display_ranges(cx),
4917 &[
4918 DisplayPoint::new(0, 4)..DisplayPoint::new(0, 7),
4919 DisplayPoint::new(0, 8)..DisplayPoint::new(0, 11),
4920 ]
4921 );
4922
4923 // outdent from 1 tabstop to 0 tabstops
4924 view.outdent(&Outdent, cx);
4925 assert_eq!(view.text(cx), "one two\nthree\n four");
4926 assert_eq!(
4927 view.selected_display_ranges(cx),
4928 &[
4929 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 3),
4930 DisplayPoint::new(0, 4)..DisplayPoint::new(0, 7),
4931 ]
4932 );
4933
4934 // select across line ending
4935 view.select_display_ranges(&[DisplayPoint::new(1, 1)..DisplayPoint::new(2, 0)], cx)
4936 .unwrap();
4937
4938 // indent and outdent affect only the preceding line
4939 view.tab(&Tab, cx);
4940 assert_eq!(view.text(cx), "one two\n three\n four");
4941 assert_eq!(
4942 view.selected_display_ranges(cx),
4943 &[DisplayPoint::new(1, 5)..DisplayPoint::new(2, 0)]
4944 );
4945 view.outdent(&Outdent, cx);
4946 assert_eq!(view.text(cx), "one two\nthree\n four");
4947 assert_eq!(
4948 view.selected_display_ranges(cx),
4949 &[DisplayPoint::new(1, 1)..DisplayPoint::new(2, 0)]
4950 );
4951
4952 // Ensure that indenting/outdenting works when the cursor is at column 0.
4953 view.select_display_ranges(&[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)], cx)
4954 .unwrap();
4955 view.tab(&Tab, cx);
4956 assert_eq!(view.text(cx), "one two\n three\n four");
4957 assert_eq!(
4958 view.selected_display_ranges(cx),
4959 &[DisplayPoint::new(1, 4)..DisplayPoint::new(1, 4)]
4960 );
4961
4962 view.select_display_ranges(&[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)], cx)
4963 .unwrap();
4964 view.outdent(&Outdent, cx);
4965 assert_eq!(view.text(cx), "one two\nthree\n four");
4966 assert_eq!(
4967 view.selected_display_ranges(cx),
4968 &[DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0)]
4969 );
4970 });
4971 }
4972
4973 #[gpui::test]
4974 fn test_backspace(cx: &mut gpui::MutableAppContext) {
4975 let buffer =
4976 MultiBuffer::build_simple("one two three\nfour five six\nseven eight nine\nten\n", cx);
4977 let settings = EditorSettings::test(&cx);
4978 let (_, view) = cx.add_window(Default::default(), |cx| {
4979 build_editor(buffer.clone(), settings, cx)
4980 });
4981
4982 view.update(cx, |view, cx| {
4983 view.select_display_ranges(
4984 &[
4985 // an empty selection - the preceding character is deleted
4986 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
4987 // one character selected - it is deleted
4988 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
4989 // a line suffix selected - it is deleted
4990 DisplayPoint::new(2, 6)..DisplayPoint::new(3, 0),
4991 ],
4992 cx,
4993 )
4994 .unwrap();
4995 view.backspace(&Backspace, cx);
4996 });
4997
4998 assert_eq!(
4999 buffer.read(cx).read(cx).text(),
5000 "oe two three\nfou five six\nseven ten\n"
5001 );
5002 }
5003
5004 #[gpui::test]
5005 fn test_delete(cx: &mut gpui::MutableAppContext) {
5006 let buffer =
5007 MultiBuffer::build_simple("one two three\nfour five six\nseven eight nine\nten\n", cx);
5008 let settings = EditorSettings::test(&cx);
5009 let (_, view) = cx.add_window(Default::default(), |cx| {
5010 build_editor(buffer.clone(), settings, cx)
5011 });
5012
5013 view.update(cx, |view, cx| {
5014 view.select_display_ranges(
5015 &[
5016 // an empty selection - the following character is deleted
5017 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
5018 // one character selected - it is deleted
5019 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
5020 // a line suffix selected - it is deleted
5021 DisplayPoint::new(2, 6)..DisplayPoint::new(3, 0),
5022 ],
5023 cx,
5024 )
5025 .unwrap();
5026 view.delete(&Delete, cx);
5027 });
5028
5029 assert_eq!(
5030 buffer.read(cx).read(cx).text(),
5031 "on two three\nfou five six\nseven ten\n"
5032 );
5033 }
5034
5035 #[gpui::test]
5036 fn test_delete_line(cx: &mut gpui::MutableAppContext) {
5037 let settings = EditorSettings::test(&cx);
5038 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
5039 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
5040 view.update(cx, |view, cx| {
5041 view.select_display_ranges(
5042 &[
5043 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
5044 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 1),
5045 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
5046 ],
5047 cx,
5048 )
5049 .unwrap();
5050 view.delete_line(&DeleteLine, cx);
5051 assert_eq!(view.display_text(cx), "ghi");
5052 assert_eq!(
5053 view.selected_display_ranges(cx),
5054 vec![
5055 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
5056 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1)
5057 ]
5058 );
5059 });
5060
5061 let settings = EditorSettings::test(&cx);
5062 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
5063 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
5064 view.update(cx, |view, cx| {
5065 view.select_display_ranges(&[DisplayPoint::new(2, 0)..DisplayPoint::new(0, 1)], cx)
5066 .unwrap();
5067 view.delete_line(&DeleteLine, cx);
5068 assert_eq!(view.display_text(cx), "ghi\n");
5069 assert_eq!(
5070 view.selected_display_ranges(cx),
5071 vec![DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1)]
5072 );
5073 });
5074 }
5075
5076 #[gpui::test]
5077 fn test_duplicate_line(cx: &mut gpui::MutableAppContext) {
5078 let settings = EditorSettings::test(&cx);
5079 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
5080 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
5081 view.update(cx, |view, cx| {
5082 view.select_display_ranges(
5083 &[
5084 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
5085 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
5086 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
5087 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
5088 ],
5089 cx,
5090 )
5091 .unwrap();
5092 view.duplicate_line(&DuplicateLine, cx);
5093 assert_eq!(view.display_text(cx), "abc\nabc\ndef\ndef\nghi\n\n");
5094 assert_eq!(
5095 view.selected_display_ranges(cx),
5096 vec![
5097 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 1),
5098 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
5099 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
5100 DisplayPoint::new(6, 0)..DisplayPoint::new(6, 0),
5101 ]
5102 );
5103 });
5104
5105 let settings = EditorSettings::test(&cx);
5106 let buffer = MultiBuffer::build_simple("abc\ndef\nghi\n", cx);
5107 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
5108 view.update(cx, |view, cx| {
5109 view.select_display_ranges(
5110 &[
5111 DisplayPoint::new(0, 1)..DisplayPoint::new(1, 1),
5112 DisplayPoint::new(1, 2)..DisplayPoint::new(2, 1),
5113 ],
5114 cx,
5115 )
5116 .unwrap();
5117 view.duplicate_line(&DuplicateLine, cx);
5118 assert_eq!(view.display_text(cx), "abc\ndef\nghi\nabc\ndef\nghi\n");
5119 assert_eq!(
5120 view.selected_display_ranges(cx),
5121 vec![
5122 DisplayPoint::new(3, 1)..DisplayPoint::new(4, 1),
5123 DisplayPoint::new(4, 2)..DisplayPoint::new(5, 1),
5124 ]
5125 );
5126 });
5127 }
5128
5129 #[gpui::test]
5130 fn test_move_line_up_down(cx: &mut gpui::MutableAppContext) {
5131 let settings = EditorSettings::test(&cx);
5132 let buffer = MultiBuffer::build_simple(&sample_text(10, 5, 'a'), cx);
5133 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
5134 view.update(cx, |view, cx| {
5135 view.fold_ranges(
5136 vec![
5137 Point::new(0, 2)..Point::new(1, 2),
5138 Point::new(2, 3)..Point::new(4, 1),
5139 Point::new(7, 0)..Point::new(8, 4),
5140 ],
5141 cx,
5142 );
5143 view.select_display_ranges(
5144 &[
5145 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
5146 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 1),
5147 DisplayPoint::new(3, 2)..DisplayPoint::new(4, 3),
5148 DisplayPoint::new(5, 0)..DisplayPoint::new(5, 2),
5149 ],
5150 cx,
5151 )
5152 .unwrap();
5153 assert_eq!(
5154 view.display_text(cx),
5155 "aa…bbb\nccc…eeee\nfffff\nggggg\n…i\njjjjj"
5156 );
5157
5158 view.move_line_up(&MoveLineUp, cx);
5159 assert_eq!(
5160 view.display_text(cx),
5161 "aa…bbb\nccc…eeee\nggggg\n…i\njjjjj\nfffff"
5162 );
5163 assert_eq!(
5164 view.selected_display_ranges(cx),
5165 vec![
5166 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
5167 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
5168 DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3),
5169 DisplayPoint::new(4, 0)..DisplayPoint::new(4, 2)
5170 ]
5171 );
5172 });
5173
5174 view.update(cx, |view, cx| {
5175 view.move_line_down(&MoveLineDown, cx);
5176 assert_eq!(
5177 view.display_text(cx),
5178 "ccc…eeee\naa…bbb\nfffff\nggggg\n…i\njjjjj"
5179 );
5180 assert_eq!(
5181 view.selected_display_ranges(cx),
5182 vec![
5183 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
5184 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 1),
5185 DisplayPoint::new(3, 2)..DisplayPoint::new(4, 3),
5186 DisplayPoint::new(5, 0)..DisplayPoint::new(5, 2)
5187 ]
5188 );
5189 });
5190
5191 view.update(cx, |view, cx| {
5192 view.move_line_down(&MoveLineDown, cx);
5193 assert_eq!(
5194 view.display_text(cx),
5195 "ccc…eeee\nfffff\naa…bbb\nggggg\n…i\njjjjj"
5196 );
5197 assert_eq!(
5198 view.selected_display_ranges(cx),
5199 vec![
5200 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
5201 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 1),
5202 DisplayPoint::new(3, 2)..DisplayPoint::new(4, 3),
5203 DisplayPoint::new(5, 0)..DisplayPoint::new(5, 2)
5204 ]
5205 );
5206 });
5207
5208 view.update(cx, |view, cx| {
5209 view.move_line_up(&MoveLineUp, cx);
5210 assert_eq!(
5211 view.display_text(cx),
5212 "ccc…eeee\naa…bbb\nggggg\n…i\njjjjj\nfffff"
5213 );
5214 assert_eq!(
5215 view.selected_display_ranges(cx),
5216 vec![
5217 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
5218 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
5219 DisplayPoint::new(2, 2)..DisplayPoint::new(3, 3),
5220 DisplayPoint::new(4, 0)..DisplayPoint::new(4, 2)
5221 ]
5222 );
5223 });
5224 }
5225
5226 #[gpui::test]
5227 fn test_move_line_up_down_with_blocks(cx: &mut gpui::MutableAppContext) {
5228 let settings = EditorSettings::test(&cx);
5229 let buffer = MultiBuffer::build_simple(&sample_text(10, 5, 'a'), cx);
5230 let snapshot = buffer.read(cx).snapshot(cx);
5231 let (_, editor) =
5232 cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
5233 editor.update(cx, |editor, cx| {
5234 editor.insert_blocks(
5235 [BlockProperties {
5236 position: snapshot.anchor_after(Point::new(2, 0)),
5237 disposition: BlockDisposition::Below,
5238 height: 1,
5239 render: Arc::new(|_| Empty::new().boxed()),
5240 }],
5241 cx,
5242 );
5243 editor.select_ranges([Point::new(2, 0)..Point::new(2, 0)], None, cx);
5244 editor.move_line_down(&MoveLineDown, cx);
5245 });
5246 }
5247
5248 #[gpui::test]
5249 fn test_clipboard(cx: &mut gpui::MutableAppContext) {
5250 let buffer = MultiBuffer::build_simple("one✅ two three four five six ", cx);
5251 let settings = EditorSettings::test(&cx);
5252 let view = cx
5253 .add_window(Default::default(), |cx| {
5254 build_editor(buffer.clone(), settings, cx)
5255 })
5256 .1;
5257
5258 // Cut with three selections. Clipboard text is divided into three slices.
5259 view.update(cx, |view, cx| {
5260 view.select_ranges(vec![0..7, 11..17, 22..27], None, cx);
5261 view.cut(&Cut, cx);
5262 assert_eq!(view.display_text(cx), "two four six ");
5263 });
5264
5265 // Paste with three cursors. Each cursor pastes one slice of the clipboard text.
5266 view.update(cx, |view, cx| {
5267 view.select_ranges(vec![4..4, 9..9, 13..13], None, cx);
5268 view.paste(&Paste, cx);
5269 assert_eq!(view.display_text(cx), "two one✅ four three six five ");
5270 assert_eq!(
5271 view.selected_display_ranges(cx),
5272 &[
5273 DisplayPoint::new(0, 11)..DisplayPoint::new(0, 11),
5274 DisplayPoint::new(0, 22)..DisplayPoint::new(0, 22),
5275 DisplayPoint::new(0, 31)..DisplayPoint::new(0, 31)
5276 ]
5277 );
5278 });
5279
5280 // Paste again but with only two cursors. Since the number of cursors doesn't
5281 // match the number of slices in the clipboard, the entire clipboard text
5282 // is pasted at each cursor.
5283 view.update(cx, |view, cx| {
5284 view.select_ranges(vec![0..0, 31..31], None, cx);
5285 view.handle_input(&Input("( ".into()), cx);
5286 view.paste(&Paste, cx);
5287 view.handle_input(&Input(") ".into()), cx);
5288 assert_eq!(
5289 view.display_text(cx),
5290 "( one✅ three five ) two one✅ four three six five ( one✅ three five ) "
5291 );
5292 });
5293
5294 view.update(cx, |view, cx| {
5295 view.select_ranges(vec![0..0], None, cx);
5296 view.handle_input(&Input("123\n4567\n89\n".into()), cx);
5297 assert_eq!(
5298 view.display_text(cx),
5299 "123\n4567\n89\n( one✅ three five ) two one✅ four three six five ( one✅ three five ) "
5300 );
5301 });
5302
5303 // Cut with three selections, one of which is full-line.
5304 view.update(cx, |view, cx| {
5305 view.select_display_ranges(
5306 &[
5307 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 2),
5308 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
5309 DisplayPoint::new(2, 0)..DisplayPoint::new(2, 1),
5310 ],
5311 cx,
5312 )
5313 .unwrap();
5314 view.cut(&Cut, cx);
5315 assert_eq!(
5316 view.display_text(cx),
5317 "13\n9\n( one✅ three five ) two one✅ four three six five ( one✅ three five ) "
5318 );
5319 });
5320
5321 // Paste with three selections, noticing how the copied selection that was full-line
5322 // gets inserted before the second cursor.
5323 view.update(cx, |view, cx| {
5324 view.select_display_ranges(
5325 &[
5326 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
5327 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
5328 DisplayPoint::new(2, 2)..DisplayPoint::new(2, 3),
5329 ],
5330 cx,
5331 )
5332 .unwrap();
5333 view.paste(&Paste, cx);
5334 assert_eq!(
5335 view.display_text(cx),
5336 "123\n4567\n9\n( 8ne✅ three five ) two one✅ four three six five ( one✅ three five ) "
5337 );
5338 assert_eq!(
5339 view.selected_display_ranges(cx),
5340 &[
5341 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
5342 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
5343 DisplayPoint::new(3, 3)..DisplayPoint::new(3, 3),
5344 ]
5345 );
5346 });
5347
5348 // Copy with a single cursor only, which writes the whole line into the clipboard.
5349 view.update(cx, |view, cx| {
5350 view.select_display_ranges(&[DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1)], cx)
5351 .unwrap();
5352 view.copy(&Copy, cx);
5353 });
5354
5355 // Paste with three selections, noticing how the copied full-line selection is inserted
5356 // before the empty selections but replaces the selection that is non-empty.
5357 view.update(cx, |view, cx| {
5358 view.select_display_ranges(
5359 &[
5360 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
5361 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 2),
5362 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
5363 ],
5364 cx,
5365 )
5366 .unwrap();
5367 view.paste(&Paste, cx);
5368 assert_eq!(
5369 view.display_text(cx),
5370 "123\n123\n123\n67\n123\n9\n( 8ne✅ three five ) two one✅ four three six five ( one✅ three five ) "
5371 );
5372 assert_eq!(
5373 view.selected_display_ranges(cx),
5374 &[
5375 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
5376 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
5377 DisplayPoint::new(5, 1)..DisplayPoint::new(5, 1),
5378 ]
5379 );
5380 });
5381 }
5382
5383 #[gpui::test]
5384 fn test_select_all(cx: &mut gpui::MutableAppContext) {
5385 let buffer = MultiBuffer::build_simple("abc\nde\nfgh", cx);
5386 let settings = EditorSettings::test(&cx);
5387 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
5388 view.update(cx, |view, cx| {
5389 view.select_all(&SelectAll, cx);
5390 assert_eq!(
5391 view.selected_display_ranges(cx),
5392 &[DisplayPoint::new(0, 0)..DisplayPoint::new(2, 3)]
5393 );
5394 });
5395 }
5396
5397 #[gpui::test]
5398 fn test_select_line(cx: &mut gpui::MutableAppContext) {
5399 let settings = EditorSettings::test(&cx);
5400 let buffer = MultiBuffer::build_simple(&sample_text(6, 5, 'a'), cx);
5401 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
5402 view.update(cx, |view, cx| {
5403 view.select_display_ranges(
5404 &[
5405 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
5406 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
5407 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
5408 DisplayPoint::new(4, 2)..DisplayPoint::new(4, 2),
5409 ],
5410 cx,
5411 )
5412 .unwrap();
5413 view.select_line(&SelectLine, cx);
5414 assert_eq!(
5415 view.selected_display_ranges(cx),
5416 vec![
5417 DisplayPoint::new(0, 0)..DisplayPoint::new(2, 0),
5418 DisplayPoint::new(4, 0)..DisplayPoint::new(5, 0),
5419 ]
5420 );
5421 });
5422
5423 view.update(cx, |view, cx| {
5424 view.select_line(&SelectLine, cx);
5425 assert_eq!(
5426 view.selected_display_ranges(cx),
5427 vec![
5428 DisplayPoint::new(0, 0)..DisplayPoint::new(3, 0),
5429 DisplayPoint::new(4, 0)..DisplayPoint::new(5, 5),
5430 ]
5431 );
5432 });
5433
5434 view.update(cx, |view, cx| {
5435 view.select_line(&SelectLine, cx);
5436 assert_eq!(
5437 view.selected_display_ranges(cx),
5438 vec![DisplayPoint::new(0, 0)..DisplayPoint::new(5, 5)]
5439 );
5440 });
5441 }
5442
5443 #[gpui::test]
5444 fn test_split_selection_into_lines(cx: &mut gpui::MutableAppContext) {
5445 let settings = EditorSettings::test(&cx);
5446 let buffer = MultiBuffer::build_simple(&sample_text(9, 5, 'a'), cx);
5447 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
5448 view.update(cx, |view, cx| {
5449 view.fold_ranges(
5450 vec![
5451 Point::new(0, 2)..Point::new(1, 2),
5452 Point::new(2, 3)..Point::new(4, 1),
5453 Point::new(7, 0)..Point::new(8, 4),
5454 ],
5455 cx,
5456 );
5457 view.select_display_ranges(
5458 &[
5459 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
5460 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
5461 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
5462 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 4),
5463 ],
5464 cx,
5465 )
5466 .unwrap();
5467 assert_eq!(view.display_text(cx), "aa…bbb\nccc…eeee\nfffff\nggggg\n…i");
5468 });
5469
5470 view.update(cx, |view, cx| {
5471 view.split_selection_into_lines(&SplitSelectionIntoLines, cx);
5472 assert_eq!(
5473 view.display_text(cx),
5474 "aaaaa\nbbbbb\nccc…eeee\nfffff\nggggg\n…i"
5475 );
5476 assert_eq!(
5477 view.selected_display_ranges(cx),
5478 [
5479 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
5480 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 2),
5481 DisplayPoint::new(2, 0)..DisplayPoint::new(2, 0),
5482 DisplayPoint::new(5, 4)..DisplayPoint::new(5, 4)
5483 ]
5484 );
5485 });
5486
5487 view.update(cx, |view, cx| {
5488 view.select_display_ranges(&[DisplayPoint::new(5, 0)..DisplayPoint::new(0, 1)], cx)
5489 .unwrap();
5490 view.split_selection_into_lines(&SplitSelectionIntoLines, cx);
5491 assert_eq!(
5492 view.display_text(cx),
5493 "aaaaa\nbbbbb\nccccc\nddddd\neeeee\nfffff\nggggg\nhhhhh\niiiii"
5494 );
5495 assert_eq!(
5496 view.selected_display_ranges(cx),
5497 [
5498 DisplayPoint::new(0, 5)..DisplayPoint::new(0, 5),
5499 DisplayPoint::new(1, 5)..DisplayPoint::new(1, 5),
5500 DisplayPoint::new(2, 5)..DisplayPoint::new(2, 5),
5501 DisplayPoint::new(3, 5)..DisplayPoint::new(3, 5),
5502 DisplayPoint::new(4, 5)..DisplayPoint::new(4, 5),
5503 DisplayPoint::new(5, 5)..DisplayPoint::new(5, 5),
5504 DisplayPoint::new(6, 5)..DisplayPoint::new(6, 5),
5505 DisplayPoint::new(7, 0)..DisplayPoint::new(7, 0)
5506 ]
5507 );
5508 });
5509 }
5510
5511 #[gpui::test]
5512 fn test_add_selection_above_below(cx: &mut gpui::MutableAppContext) {
5513 let settings = EditorSettings::test(&cx);
5514 let buffer = MultiBuffer::build_simple("abc\ndefghi\n\njk\nlmno\n", cx);
5515 let (_, view) = cx.add_window(Default::default(), |cx| build_editor(buffer, settings, cx));
5516
5517 view.update(cx, |view, cx| {
5518 view.select_display_ranges(&[DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)], cx)
5519 .unwrap();
5520 });
5521 view.update(cx, |view, cx| {
5522 view.add_selection_above(&AddSelectionAbove, cx);
5523 assert_eq!(
5524 view.selected_display_ranges(cx),
5525 vec![
5526 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
5527 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)
5528 ]
5529 );
5530 });
5531
5532 view.update(cx, |view, cx| {
5533 view.add_selection_above(&AddSelectionAbove, cx);
5534 assert_eq!(
5535 view.selected_display_ranges(cx),
5536 vec![
5537 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 3),
5538 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)
5539 ]
5540 );
5541 });
5542
5543 view.update(cx, |view, cx| {
5544 view.add_selection_below(&AddSelectionBelow, cx);
5545 assert_eq!(
5546 view.selected_display_ranges(cx),
5547 vec![DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3)]
5548 );
5549 });
5550
5551 view.update(cx, |view, cx| {
5552 view.add_selection_below(&AddSelectionBelow, cx);
5553 assert_eq!(
5554 view.selected_display_ranges(cx),
5555 vec![
5556 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3),
5557 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 3)
5558 ]
5559 );
5560 });
5561
5562 view.update(cx, |view, cx| {
5563 view.add_selection_below(&AddSelectionBelow, cx);
5564 assert_eq!(
5565 view.selected_display_ranges(cx),
5566 vec![
5567 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 3),
5568 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 3)
5569 ]
5570 );
5571 });
5572
5573 view.update(cx, |view, cx| {
5574 view.select_display_ranges(&[DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3)], cx)
5575 .unwrap();
5576 });
5577 view.update(cx, |view, cx| {
5578 view.add_selection_below(&AddSelectionBelow, cx);
5579 assert_eq!(
5580 view.selected_display_ranges(cx),
5581 vec![
5582 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
5583 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 3)
5584 ]
5585 );
5586 });
5587
5588 view.update(cx, |view, cx| {
5589 view.add_selection_below(&AddSelectionBelow, cx);
5590 assert_eq!(
5591 view.selected_display_ranges(cx),
5592 vec![
5593 DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3),
5594 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 3)
5595 ]
5596 );
5597 });
5598
5599 view.update(cx, |view, cx| {
5600 view.add_selection_above(&AddSelectionAbove, cx);
5601 assert_eq!(
5602 view.selected_display_ranges(cx),
5603 vec![DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3)]
5604 );
5605 });
5606
5607 view.update(cx, |view, cx| {
5608 view.add_selection_above(&AddSelectionAbove, cx);
5609 assert_eq!(
5610 view.selected_display_ranges(cx),
5611 vec![DisplayPoint::new(1, 4)..DisplayPoint::new(1, 3)]
5612 );
5613 });
5614
5615 view.update(cx, |view, cx| {
5616 view.select_display_ranges(&[DisplayPoint::new(0, 1)..DisplayPoint::new(1, 4)], cx)
5617 .unwrap();
5618 view.add_selection_below(&AddSelectionBelow, cx);
5619 assert_eq!(
5620 view.selected_display_ranges(cx),
5621 vec![
5622 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
5623 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 4),
5624 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 2),
5625 ]
5626 );
5627 });
5628
5629 view.update(cx, |view, cx| {
5630 view.add_selection_below(&AddSelectionBelow, cx);
5631 assert_eq!(
5632 view.selected_display_ranges(cx),
5633 vec![
5634 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
5635 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 4),
5636 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 2),
5637 DisplayPoint::new(4, 1)..DisplayPoint::new(4, 4),
5638 ]
5639 );
5640 });
5641
5642 view.update(cx, |view, cx| {
5643 view.add_selection_above(&AddSelectionAbove, cx);
5644 assert_eq!(
5645 view.selected_display_ranges(cx),
5646 vec![
5647 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 3),
5648 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 4),
5649 DisplayPoint::new(3, 1)..DisplayPoint::new(3, 2),
5650 ]
5651 );
5652 });
5653
5654 view.update(cx, |view, cx| {
5655 view.select_display_ranges(&[DisplayPoint::new(4, 3)..DisplayPoint::new(1, 1)], cx)
5656 .unwrap();
5657 });
5658 view.update(cx, |view, cx| {
5659 view.add_selection_above(&AddSelectionAbove, cx);
5660 assert_eq!(
5661 view.selected_display_ranges(cx),
5662 vec![
5663 DisplayPoint::new(0, 3)..DisplayPoint::new(0, 1),
5664 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 1),
5665 DisplayPoint::new(3, 2)..DisplayPoint::new(3, 1),
5666 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 1),
5667 ]
5668 );
5669 });
5670
5671 view.update(cx, |view, cx| {
5672 view.add_selection_below(&AddSelectionBelow, cx);
5673 assert_eq!(
5674 view.selected_display_ranges(cx),
5675 vec![
5676 DisplayPoint::new(1, 3)..DisplayPoint::new(1, 1),
5677 DisplayPoint::new(3, 2)..DisplayPoint::new(3, 1),
5678 DisplayPoint::new(4, 3)..DisplayPoint::new(4, 1),
5679 ]
5680 );
5681 });
5682 }
5683
5684 #[gpui::test]
5685 async fn test_select_larger_smaller_syntax_node(mut cx: gpui::TestAppContext) {
5686 let settings = cx.read(EditorSettings::test);
5687 let language = Some(Arc::new(Language::new(
5688 LanguageConfig::default(),
5689 Some(tree_sitter_rust::language()),
5690 )));
5691
5692 let text = r#"
5693 use mod1::mod2::{mod3, mod4};
5694
5695 fn fn_1(param1: bool, param2: &str) {
5696 let var1 = "text";
5697 }
5698 "#
5699 .unindent();
5700
5701 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, None, cx));
5702 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
5703 let (_, view) = cx.add_window(|cx| build_editor(buffer, settings, cx));
5704 view.condition(&cx, |view, cx| !view.buffer.read(cx).is_parsing(cx))
5705 .await;
5706
5707 view.update(&mut cx, |view, cx| {
5708 view.select_display_ranges(
5709 &[
5710 DisplayPoint::new(0, 25)..DisplayPoint::new(0, 25),
5711 DisplayPoint::new(2, 24)..DisplayPoint::new(2, 12),
5712 DisplayPoint::new(3, 18)..DisplayPoint::new(3, 18),
5713 ],
5714 cx,
5715 )
5716 .unwrap();
5717 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
5718 });
5719 assert_eq!(
5720 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
5721 &[
5722 DisplayPoint::new(0, 23)..DisplayPoint::new(0, 27),
5723 DisplayPoint::new(2, 35)..DisplayPoint::new(2, 7),
5724 DisplayPoint::new(3, 15)..DisplayPoint::new(3, 21),
5725 ]
5726 );
5727
5728 view.update(&mut cx, |view, cx| {
5729 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
5730 });
5731 assert_eq!(
5732 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
5733 &[
5734 DisplayPoint::new(0, 16)..DisplayPoint::new(0, 28),
5735 DisplayPoint::new(4, 1)..DisplayPoint::new(2, 0),
5736 ]
5737 );
5738
5739 view.update(&mut cx, |view, cx| {
5740 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
5741 });
5742 assert_eq!(
5743 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
5744 &[DisplayPoint::new(5, 0)..DisplayPoint::new(0, 0)]
5745 );
5746
5747 // Trying to expand the selected syntax node one more time has no effect.
5748 view.update(&mut cx, |view, cx| {
5749 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
5750 });
5751 assert_eq!(
5752 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
5753 &[DisplayPoint::new(5, 0)..DisplayPoint::new(0, 0)]
5754 );
5755
5756 view.update(&mut cx, |view, cx| {
5757 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
5758 });
5759 assert_eq!(
5760 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
5761 &[
5762 DisplayPoint::new(0, 16)..DisplayPoint::new(0, 28),
5763 DisplayPoint::new(4, 1)..DisplayPoint::new(2, 0),
5764 ]
5765 );
5766
5767 view.update(&mut cx, |view, cx| {
5768 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
5769 });
5770 assert_eq!(
5771 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
5772 &[
5773 DisplayPoint::new(0, 23)..DisplayPoint::new(0, 27),
5774 DisplayPoint::new(2, 35)..DisplayPoint::new(2, 7),
5775 DisplayPoint::new(3, 15)..DisplayPoint::new(3, 21),
5776 ]
5777 );
5778
5779 view.update(&mut cx, |view, cx| {
5780 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
5781 });
5782 assert_eq!(
5783 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
5784 &[
5785 DisplayPoint::new(0, 25)..DisplayPoint::new(0, 25),
5786 DisplayPoint::new(2, 24)..DisplayPoint::new(2, 12),
5787 DisplayPoint::new(3, 18)..DisplayPoint::new(3, 18),
5788 ]
5789 );
5790
5791 // Trying to shrink the selected syntax node one more time has no effect.
5792 view.update(&mut cx, |view, cx| {
5793 view.select_smaller_syntax_node(&SelectSmallerSyntaxNode, cx);
5794 });
5795 assert_eq!(
5796 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
5797 &[
5798 DisplayPoint::new(0, 25)..DisplayPoint::new(0, 25),
5799 DisplayPoint::new(2, 24)..DisplayPoint::new(2, 12),
5800 DisplayPoint::new(3, 18)..DisplayPoint::new(3, 18),
5801 ]
5802 );
5803
5804 // Ensure that we keep expanding the selection if the larger selection starts or ends within
5805 // a fold.
5806 view.update(&mut cx, |view, cx| {
5807 view.fold_ranges(
5808 vec![
5809 Point::new(0, 21)..Point::new(0, 24),
5810 Point::new(3, 20)..Point::new(3, 22),
5811 ],
5812 cx,
5813 );
5814 view.select_larger_syntax_node(&SelectLargerSyntaxNode, cx);
5815 });
5816 assert_eq!(
5817 view.update(&mut cx, |view, cx| view.selected_display_ranges(cx)),
5818 &[
5819 DisplayPoint::new(0, 16)..DisplayPoint::new(0, 28),
5820 DisplayPoint::new(2, 35)..DisplayPoint::new(2, 7),
5821 DisplayPoint::new(3, 4)..DisplayPoint::new(3, 23),
5822 ]
5823 );
5824 }
5825
5826 #[gpui::test]
5827 async fn test_autoindent_selections(mut cx: gpui::TestAppContext) {
5828 let settings = cx.read(EditorSettings::test);
5829 let language = Some(Arc::new(
5830 Language::new(
5831 LanguageConfig {
5832 brackets: vec![
5833 BracketPair {
5834 start: "{".to_string(),
5835 end: "}".to_string(),
5836 close: false,
5837 newline: true,
5838 },
5839 BracketPair {
5840 start: "(".to_string(),
5841 end: ")".to_string(),
5842 close: false,
5843 newline: true,
5844 },
5845 ],
5846 ..Default::default()
5847 },
5848 Some(tree_sitter_rust::language()),
5849 )
5850 .with_indents_query(
5851 r#"
5852 (_ "(" ")" @end) @indent
5853 (_ "{" "}" @end) @indent
5854 "#,
5855 )
5856 .unwrap(),
5857 ));
5858
5859 let text = "fn a() {}";
5860
5861 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, None, cx));
5862 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
5863 let (_, editor) = cx.add_window(|cx| build_editor(buffer, settings, cx));
5864 editor
5865 .condition(&cx, |editor, cx| !editor.buffer.read(cx).is_parsing(cx))
5866 .await;
5867
5868 editor.update(&mut cx, |editor, cx| {
5869 editor.select_ranges([5..5, 8..8, 9..9], None, cx);
5870 editor.newline(&Newline, cx);
5871 assert_eq!(editor.text(cx), "fn a(\n \n) {\n \n}\n");
5872 assert_eq!(
5873 editor.selected_ranges(cx),
5874 &[
5875 Point::new(1, 4)..Point::new(1, 4),
5876 Point::new(3, 4)..Point::new(3, 4),
5877 Point::new(5, 0)..Point::new(5, 0)
5878 ]
5879 );
5880 });
5881 }
5882
5883 #[gpui::test]
5884 async fn test_autoclose_pairs(mut cx: gpui::TestAppContext) {
5885 let settings = cx.read(EditorSettings::test);
5886 let language = Some(Arc::new(Language::new(
5887 LanguageConfig {
5888 brackets: vec![
5889 BracketPair {
5890 start: "{".to_string(),
5891 end: "}".to_string(),
5892 close: true,
5893 newline: true,
5894 },
5895 BracketPair {
5896 start: "/*".to_string(),
5897 end: " */".to_string(),
5898 close: true,
5899 newline: true,
5900 },
5901 ],
5902 ..Default::default()
5903 },
5904 Some(tree_sitter_rust::language()),
5905 )));
5906
5907 let text = r#"
5908 a
5909
5910 /
5911
5912 "#
5913 .unindent();
5914
5915 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, None, cx));
5916 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
5917 let (_, view) = cx.add_window(|cx| build_editor(buffer, settings, cx));
5918 view.condition(&cx, |view, cx| !view.buffer.read(cx).is_parsing(cx))
5919 .await;
5920
5921 view.update(&mut cx, |view, cx| {
5922 view.select_display_ranges(
5923 &[
5924 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 1),
5925 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
5926 ],
5927 cx,
5928 )
5929 .unwrap();
5930 view.handle_input(&Input("{".to_string()), cx);
5931 view.handle_input(&Input("{".to_string()), cx);
5932 view.handle_input(&Input("{".to_string()), cx);
5933 assert_eq!(
5934 view.text(cx),
5935 "
5936 {{{}}}
5937 {{{}}}
5938 /
5939
5940 "
5941 .unindent()
5942 );
5943
5944 view.move_right(&MoveRight, cx);
5945 view.handle_input(&Input("}".to_string()), cx);
5946 view.handle_input(&Input("}".to_string()), cx);
5947 view.handle_input(&Input("}".to_string()), cx);
5948 assert_eq!(
5949 view.text(cx),
5950 "
5951 {{{}}}}
5952 {{{}}}}
5953 /
5954
5955 "
5956 .unindent()
5957 );
5958
5959 view.undo(&Undo, cx);
5960 view.handle_input(&Input("/".to_string()), cx);
5961 view.handle_input(&Input("*".to_string()), cx);
5962 assert_eq!(
5963 view.text(cx),
5964 "
5965 /* */
5966 /* */
5967 /
5968
5969 "
5970 .unindent()
5971 );
5972
5973 view.undo(&Undo, cx);
5974 view.select_display_ranges(
5975 &[
5976 DisplayPoint::new(2, 1)..DisplayPoint::new(2, 1),
5977 DisplayPoint::new(3, 0)..DisplayPoint::new(3, 0),
5978 ],
5979 cx,
5980 )
5981 .unwrap();
5982 view.handle_input(&Input("*".to_string()), cx);
5983 assert_eq!(
5984 view.text(cx),
5985 "
5986 a
5987
5988 /*
5989 *
5990 "
5991 .unindent()
5992 );
5993 });
5994 }
5995
5996 #[gpui::test]
5997 async fn test_toggle_comment(mut cx: gpui::TestAppContext) {
5998 let settings = cx.read(EditorSettings::test);
5999 let language = Some(Arc::new(Language::new(
6000 LanguageConfig {
6001 line_comment: Some("// ".to_string()),
6002 ..Default::default()
6003 },
6004 Some(tree_sitter_rust::language()),
6005 )));
6006
6007 let text = "
6008 fn a() {
6009 //b();
6010 // c();
6011 // d();
6012 }
6013 "
6014 .unindent();
6015
6016 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, None, cx));
6017 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
6018 let (_, view) = cx.add_window(|cx| build_editor(buffer, settings, cx));
6019
6020 view.update(&mut cx, |editor, cx| {
6021 // If multiple selections intersect a line, the line is only
6022 // toggled once.
6023 editor
6024 .select_display_ranges(
6025 &[
6026 DisplayPoint::new(1, 3)..DisplayPoint::new(2, 3),
6027 DisplayPoint::new(3, 5)..DisplayPoint::new(3, 6),
6028 ],
6029 cx,
6030 )
6031 .unwrap();
6032 editor.toggle_comments(&ToggleComments, cx);
6033 assert_eq!(
6034 editor.text(cx),
6035 "
6036 fn a() {
6037 b();
6038 c();
6039 d();
6040 }
6041 "
6042 .unindent()
6043 );
6044
6045 // The comment prefix is inserted at the same column for every line
6046 // in a selection.
6047 editor
6048 .select_display_ranges(&[DisplayPoint::new(1, 3)..DisplayPoint::new(3, 6)], cx)
6049 .unwrap();
6050 editor.toggle_comments(&ToggleComments, cx);
6051 assert_eq!(
6052 editor.text(cx),
6053 "
6054 fn a() {
6055 // b();
6056 // c();
6057 // d();
6058 }
6059 "
6060 .unindent()
6061 );
6062
6063 // If a selection ends at the beginning of a line, that line is not toggled.
6064 editor
6065 .select_display_ranges(&[DisplayPoint::new(2, 0)..DisplayPoint::new(3, 0)], cx)
6066 .unwrap();
6067 editor.toggle_comments(&ToggleComments, cx);
6068 assert_eq!(
6069 editor.text(cx),
6070 "
6071 fn a() {
6072 // b();
6073 c();
6074 // d();
6075 }
6076 "
6077 .unindent()
6078 );
6079 });
6080 }
6081
6082 #[gpui::test]
6083 fn test_editing_disjoint_excerpts(cx: &mut gpui::MutableAppContext) {
6084 let settings = EditorSettings::test(cx);
6085 let buffer = cx.add_model(|cx| Buffer::new(0, sample_text(3, 4, 'a'), cx));
6086 let multibuffer = cx.add_model(|cx| {
6087 let mut multibuffer = MultiBuffer::new(0);
6088 multibuffer.push_excerpt(
6089 ExcerptProperties {
6090 buffer: &buffer,
6091 range: Point::new(0, 0)..Point::new(0, 4),
6092 },
6093 cx,
6094 );
6095 multibuffer.push_excerpt(
6096 ExcerptProperties {
6097 buffer: &buffer,
6098 range: Point::new(1, 0)..Point::new(1, 4),
6099 },
6100 cx,
6101 );
6102 multibuffer
6103 });
6104
6105 assert_eq!(multibuffer.read(cx).read(cx).text(), "aaaa\nbbbb");
6106
6107 let (_, view) = cx.add_window(Default::default(), |cx| {
6108 build_editor(multibuffer, settings, cx)
6109 });
6110 view.update(cx, |view, cx| {
6111 view.select_display_ranges(
6112 &[
6113 DisplayPoint::new(0, 0)..DisplayPoint::new(0, 0),
6114 DisplayPoint::new(1, 0)..DisplayPoint::new(1, 0),
6115 ],
6116 cx,
6117 )
6118 .unwrap();
6119
6120 view.handle_input(&Input("X".to_string()), cx);
6121 assert_eq!(view.text(cx), "Xaaaa\nXbbbb");
6122 assert_eq!(
6123 view.selected_display_ranges(cx),
6124 &[
6125 DisplayPoint::new(0, 1)..DisplayPoint::new(0, 1),
6126 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
6127 ]
6128 )
6129 });
6130 }
6131
6132 #[gpui::test]
6133 fn test_editing_overlapping_excerpts(cx: &mut gpui::MutableAppContext) {
6134 let settings = EditorSettings::test(cx);
6135 let buffer = cx.add_model(|cx| Buffer::new(0, sample_text(3, 4, 'a'), cx));
6136 let multibuffer = cx.add_model(|cx| {
6137 let mut multibuffer = MultiBuffer::new(0);
6138 multibuffer.push_excerpt(
6139 ExcerptProperties {
6140 buffer: &buffer,
6141 range: Point::new(0, 0)..Point::new(1, 4),
6142 },
6143 cx,
6144 );
6145 multibuffer.push_excerpt(
6146 ExcerptProperties {
6147 buffer: &buffer,
6148 range: Point::new(1, 0)..Point::new(2, 4),
6149 },
6150 cx,
6151 );
6152 multibuffer
6153 });
6154
6155 assert_eq!(
6156 multibuffer.read(cx).read(cx).text(),
6157 "aaaa\nbbbb\nbbbb\ncccc"
6158 );
6159
6160 let (_, view) = cx.add_window(Default::default(), |cx| {
6161 build_editor(multibuffer, settings, cx)
6162 });
6163 view.update(cx, |view, cx| {
6164 view.select_display_ranges(
6165 &[
6166 DisplayPoint::new(1, 1)..DisplayPoint::new(1, 1),
6167 DisplayPoint::new(2, 3)..DisplayPoint::new(2, 3),
6168 ],
6169 cx,
6170 )
6171 .unwrap();
6172
6173 view.handle_input(&Input("X".to_string()), cx);
6174 assert_eq!(view.text(cx), "aaaa\nbXbbXb\nbXbbXb\ncccc");
6175 assert_eq!(
6176 view.selected_display_ranges(cx),
6177 &[
6178 DisplayPoint::new(1, 2)..DisplayPoint::new(1, 2),
6179 DisplayPoint::new(2, 5)..DisplayPoint::new(2, 5),
6180 ]
6181 )
6182 });
6183 }
6184
6185 #[gpui::test]
6186 async fn test_extra_newline_insertion(mut cx: gpui::TestAppContext) {
6187 let settings = cx.read(EditorSettings::test);
6188 let language = Some(Arc::new(Language::new(
6189 LanguageConfig {
6190 brackets: vec![
6191 BracketPair {
6192 start: "{".to_string(),
6193 end: "}".to_string(),
6194 close: true,
6195 newline: true,
6196 },
6197 BracketPair {
6198 start: "/* ".to_string(),
6199 end: " */".to_string(),
6200 close: true,
6201 newline: true,
6202 },
6203 ],
6204 ..Default::default()
6205 },
6206 Some(tree_sitter_rust::language()),
6207 )));
6208
6209 let text = concat!(
6210 "{ }\n", // Suppress rustfmt
6211 " x\n", //
6212 " /* */\n", //
6213 "x\n", //
6214 "{{} }\n", //
6215 );
6216
6217 let buffer = cx.add_model(|cx| Buffer::new(0, text, cx).with_language(language, None, cx));
6218 let buffer = cx.add_model(|cx| MultiBuffer::singleton(buffer, cx));
6219 let (_, view) = cx.add_window(|cx| build_editor(buffer, settings, cx));
6220 view.condition(&cx, |view, cx| !view.buffer.read(cx).is_parsing(cx))
6221 .await;
6222
6223 view.update(&mut cx, |view, cx| {
6224 view.select_display_ranges(
6225 &[
6226 DisplayPoint::new(0, 2)..DisplayPoint::new(0, 3),
6227 DisplayPoint::new(2, 5)..DisplayPoint::new(2, 5),
6228 DisplayPoint::new(4, 4)..DisplayPoint::new(4, 4),
6229 ],
6230 cx,
6231 )
6232 .unwrap();
6233 view.newline(&Newline, cx);
6234
6235 assert_eq!(
6236 view.buffer().read(cx).read(cx).text(),
6237 concat!(
6238 "{ \n", // Suppress rustfmt
6239 "\n", //
6240 "}\n", //
6241 " x\n", //
6242 " /* \n", //
6243 " \n", //
6244 " */\n", //
6245 "x\n", //
6246 "{{} \n", //
6247 "}\n", //
6248 )
6249 );
6250 });
6251 }
6252
6253 fn empty_range(row: usize, column: usize) -> Range<DisplayPoint> {
6254 let point = DisplayPoint::new(row as u32, column as u32);
6255 point..point
6256 }
6257
6258 fn build_editor(
6259 buffer: ModelHandle<MultiBuffer>,
6260 settings: EditorSettings,
6261 cx: &mut ViewContext<Editor>,
6262 ) -> Editor {
6263 Editor::for_buffer(buffer, Arc::new(move |_| settings.clone()), cx)
6264 }
6265}
6266
6267trait RangeExt<T> {
6268 fn sorted(&self) -> Range<T>;
6269 fn to_inclusive(&self) -> RangeInclusive<T>;
6270}
6271
6272impl<T: Ord + Clone> RangeExt<T> for Range<T> {
6273 fn sorted(&self) -> Self {
6274 cmp::min(&self.start, &self.end).clone()..cmp::max(&self.start, &self.end).clone()
6275 }
6276
6277 fn to_inclusive(&self) -> RangeInclusive<T> {
6278 self.start.clone()..=self.end.clone()
6279 }
6280}