Source/WebKit:
[WebKit-https.git] / Source / WebKit / UIProcess / ios / WKContentViewInteraction.mm
1 /*
2  * Copyright (C) 2012-2017 Apple Inc. All rights reserved.
3  *
4  * Redistribution and use in source and binary forms, with or without
5  * modification, are permitted provided that the following conditions
6  * are met:
7  * 1. Redistributions of source code must retain the above copyright
8  *    notice, this list of conditions and the following disclaimer.
9  * 2. Redistributions in binary form must reproduce the above copyright
10  *    notice, this list of conditions and the following disclaimer in the
11  *    documentation and/or other materials provided with the distribution.
12  *
13  * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
14  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
15  * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
16  * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
17  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
18  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
19  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
20  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
21  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
22  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
23  * THE POSSIBILITY OF SUCH DAMAGE.
24  */
25
26 #import "config.h"
27 #import "WKContentViewInteraction.h"
28
29 #if PLATFORM(IOS_FAMILY)
30
31 #import "APIUIClient.h"
32 #import "EditingRange.h"
33 #import "InputViewUpdateDeferrer.h"
34 #import "Logging.h"
35 #import "ManagedConfigurationSPI.h"
36 #import "NativeWebKeyboardEvent.h"
37 #import "NativeWebTouchEvent.h"
38 #import "RemoteLayerTreeDrawingAreaProxy.h"
39 #import "SmartMagnificationController.h"
40 #import "TextInputSPI.h"
41 #import "UIKitSPI.h"
42 #import "WKActionSheetAssistant.h"
43 #import "WKDatePickerViewController.h"
44 #import "WKError.h"
45 #import "WKFocusedFormControlView.h"
46 #import "WKFormInputControl.h"
47 #import "WKFormSelectControl.h"
48 #import "WKImagePreviewViewController.h"
49 #import "WKInspectorNodeSearchGestureRecognizer.h"
50 #import "WKNSURLExtras.h"
51 #import "WKPreviewActionItemIdentifiers.h"
52 #import "WKPreviewActionItemInternal.h"
53 #import "WKPreviewElementInfoInternal.h"
54 #import "WKQuickboardListViewController.h"
55 #import "WKSelectMenuListViewController.h"
56 #import "WKTextInputListViewController.h"
57 #import "WKTimePickerViewController.h"
58 #import "WKUIDelegatePrivate.h"
59 #import "WKWebEvent.h"
60 #import "WKWebViewConfiguration.h"
61 #import "WKWebViewConfigurationPrivate.h"
62 #import "WKWebViewInternal.h"
63 #import "WKWebViewPrivate.h"
64 #import "WebDataListSuggestionsDropdownIOS.h"
65 #import "WebEvent.h"
66 #import "WebIOSEventFactory.h"
67 #import "WebPageMessages.h"
68 #import "WebProcessProxy.h"
69 #import "_WKActivatedElementInfoInternal.h"
70 #import "_WKElementAction.h"
71 #import "_WKFocusedElementInfo.h"
72 #import "_WKInputDelegate.h"
73 #import <CoreText/CTFont.h>
74 #import <CoreText/CTFontDescriptor.h>
75 #import <MobileCoreServices/UTCoreTypes.h>
76 #import <WebCore/Color.h>
77 #import <WebCore/DataDetection.h>
78 #import <WebCore/FloatQuad.h>
79 #import <WebCore/FontAttributeChanges.h>
80 #import <WebCore/InputMode.h>
81 #import <WebCore/LocalizedStrings.h>
82 #import <WebCore/NotImplemented.h>
83 #import <WebCore/Pasteboard.h>
84 #import <WebCore/Path.h>
85 #import <WebCore/PathUtilities.h>
86 #import <WebCore/PromisedAttachmentInfo.h>
87 #import <WebCore/RuntimeApplicationChecks.h>
88 #import <WebCore/Scrollbar.h>
89 #import <WebCore/ShareData.h>
90 #import <WebCore/TextIndicator.h>
91 #import <WebCore/VisibleSelection.h>
92 #import <WebCore/WebCoreNSURLExtras.h>
93 #import <WebCore/WebEvent.h>
94 #import <WebKit/WebSelectionRect.h> // FIXME: WK2 should not include WebKit headers!
95 #import <pal/spi/cg/CoreGraphicsSPI.h>
96 #import <pal/spi/cocoa/DataDetectorsCoreSPI.h>
97 #import <pal/spi/ios/DataDetectorsUISPI.h>
98 #import <wtf/Optional.h>
99 #import <wtf/RetainPtr.h>
100 #import <wtf/SetForScope.h>
101 #import <wtf/SoftLinking.h>
102 #import <wtf/WeakObjCPtr.h>
103 #import <wtf/text/TextStream.h>
104
105 #if ENABLE(DRAG_SUPPORT)
106 #import <WebCore/DragData.h>
107 #import <WebCore/DragItem.h>
108 #import <WebCore/PlatformPasteboard.h>
109 #import <WebCore/WebItemProviderPasteboard.h>
110 #endif
111
112 #if PLATFORM(IOSMAC)
113 #import "NativeWebMouseEvent.h"
114 #import <UIKit/UIHoverGestureRecognizer.h>
115 #import <pal/spi/ios/GraphicsServicesSPI.h>
116 #endif
117
118 #if ENABLE(INPUT_TYPE_COLOR)
119 #import "WKFormColorControl.h"
120 #endif
121
122 #if USE(APPLE_INTERNAL_SDK) && __has_include(<WebKitAdditions/WKPlatformFileUploadPanel.mm>)
123 #import <WebKitAdditions/WKPlatformFileUploadPanel.mm>
124 #endif
125
126 #if PLATFORM(WATCHOS)
127
128 @interface WKContentView (WatchSupport) <WKFocusedFormControlViewDelegate, WKSelectMenuListViewControllerDelegate, WKTextInputListViewControllerDelegate>
129 @end
130
131 #endif
132
133 using namespace WebCore;
134 using namespace WebKit;
135
136 namespace WebKit {
137
138 WKSelectionDrawingInfo::WKSelectionDrawingInfo()
139     : type(SelectionType::None)
140 {
141 }
142
143 WKSelectionDrawingInfo::WKSelectionDrawingInfo(const EditorState& editorState)
144 {
145     if (editorState.selectionIsNone) {
146         type = SelectionType::None;
147         return;
148     }
149
150     if (editorState.isInPlugin) {
151         type = SelectionType::Plugin;
152         return;
153     }
154
155     type = SelectionType::Range;
156     auto& postLayoutData = editorState.postLayoutData();
157     caretRect = postLayoutData.caretRectAtEnd;
158     selectionRects = postLayoutData.selectionRects;
159 }
160
161 inline bool operator==(const WKSelectionDrawingInfo& a, const WKSelectionDrawingInfo& b)
162 {
163     if (a.type != b.type)
164         return false;
165
166     if (a.type == WKSelectionDrawingInfo::SelectionType::Range) {
167         if (a.caretRect != b.caretRect)
168             return false;
169
170         if (a.selectionRects.size() != b.selectionRects.size())
171             return false;
172
173         for (unsigned i = 0; i < a.selectionRects.size(); ++i) {
174             if (a.selectionRects[i].rect() != b.selectionRects[i].rect())
175                 return false;
176         }
177     }
178
179     return true;
180 }
181
182 inline bool operator!=(const WKSelectionDrawingInfo& a, const WKSelectionDrawingInfo& b)
183 {
184     return !(a == b);
185 }
186
187 static TextStream& operator<<(TextStream& stream, WKSelectionDrawingInfo::SelectionType type)
188 {
189     switch (type) {
190     case WKSelectionDrawingInfo::SelectionType::None: stream << "none"; break;
191     case WKSelectionDrawingInfo::SelectionType::Plugin: stream << "plugin"; break;
192     case WKSelectionDrawingInfo::SelectionType::Range: stream << "range"; break;
193     }
194     
195     return stream;
196 }
197
198 TextStream& operator<<(TextStream& stream, const WKSelectionDrawingInfo& info)
199 {
200     TextStream::GroupScope group(stream);
201     stream.dumpProperty("type", info.type);
202     stream.dumpProperty("caret rect", info.caretRect);
203     stream.dumpProperty("selection rects", info.selectionRects);
204     return stream;
205 }
206
207 } // namespace WebKit
208
209 static const float highlightDelay = 0.12;
210 static const float tapAndHoldDelay  = 0.75;
211 const CGFloat minimumTapHighlightRadius = 2.0;
212
213 @interface WKTextRange : UITextRange {
214     CGRect _startRect;
215     CGRect _endRect;
216     BOOL _isNone;
217     BOOL _isRange;
218     BOOL _isEditable;
219     NSArray *_selectionRects;
220     NSUInteger _selectedTextLength;
221 }
222 @property (nonatomic) CGRect startRect;
223 @property (nonatomic) CGRect endRect;
224 @property (nonatomic) BOOL isNone;
225 @property (nonatomic) BOOL isRange;
226 @property (nonatomic) BOOL isEditable;
227 @property (nonatomic) NSUInteger selectedTextLength;
228 @property (copy, nonatomic) NSArray *selectionRects;
229
230 + (WKTextRange *)textRangeWithState:(BOOL)isNone isRange:(BOOL)isRange isEditable:(BOOL)isEditable startRect:(CGRect)startRect endRect:(CGRect)endRect selectionRects:(NSArray *)selectionRects selectedTextLength:(NSUInteger)selectedTextLength;
231
232 @end
233
234 @interface WKTextPosition : UITextPosition {
235     CGRect _positionRect;
236 }
237
238 @property (nonatomic) CGRect positionRect;
239
240 + (WKTextPosition *)textPositionWithRect:(CGRect)positionRect;
241
242 @end
243
244 @interface WKTextSelectionRect : UITextSelectionRect
245
246 @property (nonatomic, retain) WebSelectionRect *webRect;
247
248 + (NSArray *)textSelectionRectsWithWebRects:(NSArray *)webRects;
249
250 @end
251
252 @interface WKAutocorrectionRects : UIWKAutocorrectionRects
253 + (WKAutocorrectionRects *)autocorrectionRectsWithRects:(CGRect)firstRect lastRect:(CGRect)lastRect;
254 @end
255
256 @interface WKAutocorrectionContext : UIWKAutocorrectionContext
257 + (WKAutocorrectionContext *)autocorrectionContextWithData:(NSString *)beforeText markedText:(NSString *)markedText selectedText:(NSString *)selectedText afterText:(NSString *)afterText selectedRangeInMarkedText:(NSRange)range;
258 @end
259
260 @interface UITextInteractionAssistant (UITextInteractionAssistant_Internal)
261 // FIXME: this needs to be moved from the internal header to the private.
262 - (id)initWithView:(UIResponder <UITextInput> *)view;
263 - (void)selectWord;
264 @end
265
266 @interface UIView (UIViewInternalHack)
267 + (BOOL)_addCompletion:(void(^)(BOOL))completion;
268 @end
269
270 @protocol UISelectionInteractionAssistant;
271
272 @interface WKFocusedElementInfo : NSObject <_WKFocusedElementInfo>
273 - (instancetype)initWithAssistedNodeInformation:(const AssistedNodeInformation&)information isUserInitiated:(BOOL)isUserInitiated userObject:(NSObject <NSSecureCoding> *)userObject;
274 @end
275
276 @implementation WKFormInputSession {
277     WeakObjCPtr<WKContentView> _contentView;
278     RetainPtr<WKFocusedElementInfo> _focusedElementInfo;
279     RetainPtr<UIView> _customInputView;
280     RetainPtr<UIView> _customInputAccessoryView;
281     RetainPtr<NSArray<UITextSuggestion *>> _suggestions;
282     BOOL _accessoryViewShouldNotShow;
283     BOOL _forceSecureTextEntry;
284     BOOL _requiresStrongPasswordAssistance;
285 }
286
287 - (instancetype)initWithContentView:(WKContentView *)view focusedElementInfo:(WKFocusedElementInfo *)elementInfo requiresStrongPasswordAssistance:(BOOL)requiresStrongPasswordAssistance
288 {
289     if (!(self = [super init]))
290         return nil;
291
292     _contentView = view;
293     _focusedElementInfo = elementInfo;
294     _requiresStrongPasswordAssistance = requiresStrongPasswordAssistance;
295
296     return self;
297 }
298
299 - (id <_WKFocusedElementInfo>)focusedElementInfo
300 {
301     return _focusedElementInfo.get();
302 }
303
304 - (NSObject <NSSecureCoding> *)userObject
305 {
306     return [_focusedElementInfo userObject];
307 }
308
309 - (BOOL)isValid
310 {
311     return !!_contentView;
312 }
313
314 - (NSString *)accessoryViewCustomButtonTitle
315 {
316     return [[[_contentView formAccessoryView] _autofill] title];
317 }
318
319 - (void)setAccessoryViewCustomButtonTitle:(NSString *)title
320 {
321     if (title.length)
322         [[_contentView formAccessoryView] showAutoFillButtonWithTitle:title];
323     else
324         [[_contentView formAccessoryView] hideAutoFillButton];
325     if (currentUserInterfaceIdiomIsPad())
326         [_contentView reloadInputViews];
327 }
328
329 - (BOOL)accessoryViewShouldNotShow
330 {
331     return _accessoryViewShouldNotShow;
332 }
333
334 - (void)setAccessoryViewShouldNotShow:(BOOL)accessoryViewShouldNotShow
335 {
336     if (_accessoryViewShouldNotShow == accessoryViewShouldNotShow)
337         return;
338
339     _accessoryViewShouldNotShow = accessoryViewShouldNotShow;
340     [_contentView reloadInputViews];
341 }
342
343 - (BOOL)forceSecureTextEntry
344 {
345     return _forceSecureTextEntry;
346 }
347
348 - (void)setForceSecureTextEntry:(BOOL)forceSecureTextEntry
349 {
350     if (_forceSecureTextEntry == forceSecureTextEntry)
351         return;
352
353     _forceSecureTextEntry = forceSecureTextEntry;
354     [_contentView reloadInputViews];
355 }
356
357 - (UIView *)customInputView
358 {
359     return _customInputView.get();
360 }
361
362 - (void)setCustomInputView:(UIView *)customInputView
363 {
364     if (customInputView == _customInputView)
365         return;
366
367     _customInputView = customInputView;
368     [_contentView reloadInputViews];
369 }
370
371 - (UIView *)customInputAccessoryView
372 {
373     return _customInputAccessoryView.get();
374 }
375
376 - (void)setCustomInputAccessoryView:(UIView *)customInputAccessoryView
377 {
378     if (_customInputAccessoryView == customInputAccessoryView)
379         return;
380
381     _customInputAccessoryView = customInputAccessoryView;
382     [_contentView reloadInputViews];
383 }
384
385 - (void)endEditing
386 {
387     if ([_customInputView conformsToProtocol:@protocol(WKFormControl)])
388         [(id<WKFormControl>)_customInputView.get() controlEndEditing];
389 }
390
391 - (NSArray<UITextSuggestion *> *)suggestions
392 {
393     return _suggestions.get();
394 }
395
396 - (void)setSuggestions:(NSArray<UITextSuggestion *> *)suggestions
397 {
398     if (suggestions == _suggestions || [suggestions isEqualToArray:_suggestions.get()])
399         return;
400
401     _suggestions = adoptNS([suggestions copy]);
402     [_contentView updateTextSuggestionsForInputDelegate];
403 }
404
405 - (BOOL)requiresStrongPasswordAssistance
406 {
407     return _requiresStrongPasswordAssistance;
408 }
409
410 - (void)invalidate
411 {
412     id <UITextInputSuggestionDelegate> suggestionDelegate = (id <UITextInputSuggestionDelegate>)[_contentView inputDelegate];
413     [suggestionDelegate setSuggestions:nil];
414     _contentView = nil;
415 }
416
417 - (void)reloadFocusedElementContextView
418 {
419     [_contentView reloadContextViewForPresentedListViewController];
420 }
421
422 @end
423
424 @implementation WKFocusedElementInfo {
425     WKInputType _type;
426     RetainPtr<NSString> _value;
427     BOOL _isUserInitiated;
428     RetainPtr<NSObject <NSSecureCoding>> _userObject;
429     RetainPtr<NSString> _placeholder;
430     RetainPtr<NSString> _label;
431 }
432
433 - (instancetype)initWithAssistedNodeInformation:(const AssistedNodeInformation&)information isUserInitiated:(BOOL)isUserInitiated userObject:(NSObject <NSSecureCoding> *)userObject
434 {
435     if (!(self = [super init]))
436         return nil;
437
438     switch (information.elementType) {
439     case WebKit::InputType::ContentEditable:
440         _type = WKInputTypeContentEditable;
441         break;
442     case WebKit::InputType::Text:
443         _type = WKInputTypeText;
444         break;
445     case WebKit::InputType::Password:
446         _type = WKInputTypePassword;
447         break;
448     case WebKit::InputType::TextArea:
449         _type = WKInputTypeTextArea;
450         break;
451     case WebKit::InputType::Search:
452         _type = WKInputTypeSearch;
453         break;
454     case WebKit::InputType::Email:
455         _type = WKInputTypeEmail;
456         break;
457     case WebKit::InputType::URL:
458         _type = WKInputTypeURL;
459         break;
460     case WebKit::InputType::Phone:
461         _type = WKInputTypePhone;
462         break;
463     case WebKit::InputType::Number:
464         _type = WKInputTypeNumber;
465         break;
466     case WebKit::InputType::NumberPad:
467         _type = WKInputTypeNumberPad;
468         break;
469     case WebKit::InputType::Date:
470         _type = WKInputTypeDate;
471         break;
472     case WebKit::InputType::DateTime:
473         _type = WKInputTypeDateTime;
474         break;
475     case WebKit::InputType::DateTimeLocal:
476         _type = WKInputTypeDateTimeLocal;
477         break;
478     case WebKit::InputType::Month:
479         _type = WKInputTypeMonth;
480         break;
481     case WebKit::InputType::Week:
482         _type = WKInputTypeWeek;
483         break;
484     case WebKit::InputType::Time:
485         _type = WKInputTypeTime;
486         break;
487     case WebKit::InputType::Select:
488         _type = WKInputTypeSelect;
489         break;
490 #if ENABLE(INPUT_TYPE_COLOR)
491     case WebKit::InputType::Color:
492         _type = WKInputTypeColor;
493         break;
494 #endif
495     case WebKit::InputType::None:
496         _type = WKInputTypeNone;
497         break;
498     }
499     _value = information.value;
500     _isUserInitiated = isUserInitiated;
501     _userObject = userObject;
502     _placeholder = information.placeholder;
503     _label = information.label;
504     return self;
505 }
506
507 - (WKInputType)type
508 {
509     return _type;
510 }
511
512 - (NSString *)value
513 {
514     return _value.get();
515 }
516
517 - (BOOL)isUserInitiated
518 {
519     return _isUserInitiated;
520 }
521
522 - (NSObject <NSSecureCoding> *)userObject
523 {
524     return _userObject.get();
525 }
526
527 - (NSString *)label
528 {
529     return _label.get();
530 }
531
532 - (NSString *)placeholder
533 {
534     return _placeholder.get();
535 }
536
537 @end
538
539 #if ENABLE(DRAG_SUPPORT)
540
541 @interface WKDragSessionContext : NSObject
542 - (void)addTemporaryDirectory:(NSString *)temporaryDirectory;
543 - (void)cleanUpTemporaryDirectories;
544 @end
545
546 @implementation WKDragSessionContext {
547     RetainPtr<NSMutableArray> _temporaryDirectories;
548 }
549
550 - (void)addTemporaryDirectory:(NSString *)temporaryDirectory
551 {
552     if (!_temporaryDirectories)
553         _temporaryDirectories = adoptNS([NSMutableArray new]);
554     [_temporaryDirectories addObject:temporaryDirectory];
555 }
556
557 - (void)cleanUpTemporaryDirectories
558 {
559     for (NSString *directory in _temporaryDirectories.get()) {
560         NSError *error = nil;
561         [[NSFileManager defaultManager] removeItemAtPath:directory error:&error];
562         RELEASE_LOG(DragAndDrop, "Removed temporary download directory: %@ with error: %@", directory, error);
563     }
564     _temporaryDirectories = nil;
565 }
566
567 @end
568
569 static WKDragSessionContext *existingLocalDragSessionContext(id <UIDragSession> session)
570 {
571     return [session.localContext isKindOfClass:[WKDragSessionContext class]] ? (WKDragSessionContext *)session.localContext : nil;
572 }
573
574 static WKDragSessionContext *ensureLocalDragSessionContext(id <UIDragSession> session)
575 {
576     if (WKDragSessionContext *existingContext = existingLocalDragSessionContext(session))
577         return existingContext;
578
579     if (session.localContext) {
580         RELEASE_LOG(DragAndDrop, "Overriding existing local context: %@ on session: %@", session.localContext, session);
581         ASSERT_NOT_REACHED();
582     }
583
584     session.localContext = [[[WKDragSessionContext alloc] init] autorelease];
585     return (WKDragSessionContext *)session.localContext;
586 }
587
588 #endif // ENABLE(DRAG_SUPPORT)
589
590 @interface WKContentView (WKInteractionPrivate)
591 - (void)accessibilitySpeakSelectionSetContent:(NSString *)string;
592 - (NSArray *)webSelectionRectsForSelectionRects:(const Vector<WebCore::SelectionRect>&)selectionRects;
593 - (void)_accessibilityDidGetSelectionRects:(NSArray *)selectionRects withGranularity:(UITextGranularity)granularity atOffset:(NSInteger)offset;
594 @end
595
596 @implementation WKContentView (WKInteraction)
597
598 static inline bool hasAssistedNode(WebKit::AssistedNodeInformation assistedNodeInformation)
599 {
600     return (assistedNodeInformation.elementType != InputType::None);
601 }
602
603 - (WKFormInputSession *)_formInputSession
604 {
605     return _formInputSession.get();
606 }
607
608 - (void)_createAndConfigureDoubleTapGestureRecognizer
609 {
610     _doubleTapGestureRecognizer = adoptNS([[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(_doubleTapRecognized:)]);
611     [_doubleTapGestureRecognizer setNumberOfTapsRequired:2];
612     [_doubleTapGestureRecognizer setDelegate:self];
613     [self addGestureRecognizer:_doubleTapGestureRecognizer.get()];
614     [_singleTapGestureRecognizer requireGestureRecognizerToFail:_doubleTapGestureRecognizer.get()];
615 }
616
617 - (void)_createAndConfigureLongPressGestureRecognizer
618 {
619     _longPressGestureRecognizer = adoptNS([[UILongPressGestureRecognizer alloc] initWithTarget:self action:@selector(_longPressRecognized:)]);
620     [_longPressGestureRecognizer setDelay:tapAndHoldDelay];
621     [_longPressGestureRecognizer setDelegate:self];
622     [_longPressGestureRecognizer _setRequiresQuietImpulse:YES];
623     [self addGestureRecognizer:_longPressGestureRecognizer.get()];
624 }
625
626 - (void)setupInteraction
627 {
628     if (_hasSetUpInteractions)
629         return;
630
631     if (!_interactionViewsContainerView) {
632         _interactionViewsContainerView = adoptNS([[UIView alloc] init]);
633         [_interactionViewsContainerView layer].name = @"InteractionViewsContainer";
634         [_interactionViewsContainerView setOpaque:NO];
635         [_interactionViewsContainerView layer].anchorPoint = CGPointZero;
636         [self.superview addSubview:_interactionViewsContainerView.get()];
637     }
638
639     _keyboardScrollingAnimator = adoptNS([[WKKeyboardScrollViewAnimator alloc] initWithScrollView:_webView.scrollView]);
640     [_keyboardScrollingAnimator setDelegate:self];
641
642     [self.layer addObserver:self forKeyPath:@"transform" options:NSKeyValueObservingOptionInitial context:nil];
643
644     _touchEventGestureRecognizer = adoptNS([[UIWebTouchEventsGestureRecognizer alloc] initWithTarget:self action:@selector(_webTouchEventsRecognized:) touchDelegate:self]);
645     [_touchEventGestureRecognizer setDelegate:self];
646     [self addGestureRecognizer:_touchEventGestureRecognizer.get()];
647
648 #if PLATFORM(IOSMAC)
649     _hoverGestureRecognizer = adoptNS([[UIHoverGestureRecognizer alloc] initWithTarget:self action:@selector(_hoverGestureRecognizerChanged:)]);
650     [_hoverGestureRecognizer setDelegate:self];
651     [self addGestureRecognizer:_hoverGestureRecognizer.get()];
652 #endif
653
654     _singleTapGestureRecognizer = adoptNS([[WKSyntheticClickTapGestureRecognizer alloc] initWithTarget:self action:@selector(_singleTapCommited:)]);
655     [_singleTapGestureRecognizer setDelegate:self];
656     [_singleTapGestureRecognizer setGestureRecognizedTarget:self action:@selector(_singleTapRecognized:)];
657     [_singleTapGestureRecognizer setResetTarget:self action:@selector(_singleTapDidReset:)];
658     [self addGestureRecognizer:_singleTapGestureRecognizer.get()];
659
660     _nonBlockingDoubleTapGestureRecognizer = adoptNS([[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(_nonBlockingDoubleTapRecognized:)]);
661     [_nonBlockingDoubleTapGestureRecognizer setNumberOfTapsRequired:2];
662     [_nonBlockingDoubleTapGestureRecognizer setDelegate:self];
663     [_nonBlockingDoubleTapGestureRecognizer setEnabled:NO];
664     [self addGestureRecognizer:_nonBlockingDoubleTapGestureRecognizer.get()];
665
666     [self _createAndConfigureDoubleTapGestureRecognizer];
667
668     _twoFingerDoubleTapGestureRecognizer = adoptNS([[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(_twoFingerDoubleTapRecognized:)]);
669     [_twoFingerDoubleTapGestureRecognizer setNumberOfTapsRequired:2];
670     [_twoFingerDoubleTapGestureRecognizer setNumberOfTouchesRequired:2];
671     [_twoFingerDoubleTapGestureRecognizer setDelegate:self];
672     [self addGestureRecognizer:_twoFingerDoubleTapGestureRecognizer.get()];
673
674     _highlightLongPressGestureRecognizer = adoptNS([[_UIWebHighlightLongPressGestureRecognizer alloc] initWithTarget:self action:@selector(_highlightLongPressRecognized:)]);
675     [_highlightLongPressGestureRecognizer setDelay:highlightDelay];
676     [_highlightLongPressGestureRecognizer setDelegate:self];
677     [self addGestureRecognizer:_highlightLongPressGestureRecognizer.get()];
678
679     [self _createAndConfigureLongPressGestureRecognizer];
680
681 #if ENABLE(DATA_INTERACTION)
682     [self setupDataInteractionDelegates];
683 #endif
684
685     _twoFingerSingleTapGestureRecognizer = adoptNS([[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(_twoFingerSingleTapGestureRecognized:)]);
686     [_twoFingerSingleTapGestureRecognizer setAllowableMovement:60];
687     [_twoFingerSingleTapGestureRecognizer _setAllowableSeparation:150];
688     [_twoFingerSingleTapGestureRecognizer setNumberOfTapsRequired:1];
689     [_twoFingerSingleTapGestureRecognizer setNumberOfTouchesRequired:2];
690     [_twoFingerSingleTapGestureRecognizer setDelaysTouchesEnded:NO];
691     [_twoFingerSingleTapGestureRecognizer setDelegate:self];
692     [self addGestureRecognizer:_twoFingerSingleTapGestureRecognizer.get()];
693
694 #if HAVE(LINK_PREVIEW)
695     [self _registerPreview];
696 #endif
697
698     [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(_resetShowingTextStyle:) name:UIMenuControllerDidHideMenuNotification object:nil];
699     _showingTextStyleOptions = NO;
700
701     // FIXME: This should be called when we get notified that loading has completed.
702     [self setUpTextSelectionAssistant];
703     
704     _actionSheetAssistant = adoptNS([[WKActionSheetAssistant alloc] initWithView:self]);
705     [_actionSheetAssistant setDelegate:self];
706     _smartMagnificationController = std::make_unique<SmartMagnificationController>(self);
707     _isExpectingFastSingleTapCommit = NO;
708     _potentialTapInProgress = NO;
709     _isDoubleTapPending = NO;
710     _showDebugTapHighlightsForFastClicking = [[NSUserDefaults standardUserDefaults] boolForKey:@"WebKitShowFastClickDebugTapHighlights"];
711     _needsDeferredEndScrollingSelectionUpdate = NO;
712     _isChangingFocus = NO;
713     _isBlurringFocusedNode = NO;
714
715 #if ENABLE(DATALIST_ELEMENT)
716     _dataListTextSuggestionsInputView = nil;
717     _dataListTextSuggestions = nil;
718 #endif
719
720     _hasSetUpInteractions = YES;
721 }
722
723 - (void)cleanupInteraction
724 {
725     if (!_hasSetUpInteractions)
726         return;
727
728     _textSelectionAssistant = nil;
729     
730     [_actionSheetAssistant cleanupSheet];
731     _actionSheetAssistant = nil;
732     
733     _smartMagnificationController = nil;
734     _didAccessoryTabInitiateFocus = NO;
735     _isExpectingFastSingleTapCommit = NO;
736     _needsDeferredEndScrollingSelectionUpdate = NO;
737     [_formInputSession invalidate];
738     _formInputSession = nil;
739     [_highlightView removeFromSuperview];
740     _outstandingPositionInformationRequest = std::nullopt;
741
742     _focusRequiresStrongPasswordAssistance = NO;
743
744     if (_interactionViewsContainerView) {
745         [self.layer removeObserver:self forKeyPath:@"transform"];
746         [_interactionViewsContainerView removeFromSuperview];
747         _interactionViewsContainerView = nil;
748     }
749
750     [_touchEventGestureRecognizer setDelegate:nil];
751     [self removeGestureRecognizer:_touchEventGestureRecognizer.get()];
752
753 #if PLATFORM(IOSMAC)
754     [_hoverGestureRecognizer setDelegate:nil];
755     [self removeGestureRecognizer:_hoverGestureRecognizer.get()];
756 #endif
757
758     [_singleTapGestureRecognizer setDelegate:nil];
759     [_singleTapGestureRecognizer setGestureRecognizedTarget:nil action:nil];
760     [_singleTapGestureRecognizer setResetTarget:nil action:nil];
761     [self removeGestureRecognizer:_singleTapGestureRecognizer.get()];
762
763     [_highlightLongPressGestureRecognizer setDelegate:nil];
764     [self removeGestureRecognizer:_highlightLongPressGestureRecognizer.get()];
765
766     [_longPressGestureRecognizer setDelegate:nil];
767     [self removeGestureRecognizer:_longPressGestureRecognizer.get()];
768
769     [_doubleTapGestureRecognizer setDelegate:nil];
770     [self removeGestureRecognizer:_doubleTapGestureRecognizer.get()];
771
772     [_nonBlockingDoubleTapGestureRecognizer setDelegate:nil];
773     [self removeGestureRecognizer:_nonBlockingDoubleTapGestureRecognizer.get()];
774
775     [_twoFingerDoubleTapGestureRecognizer setDelegate:nil];
776     [self removeGestureRecognizer:_twoFingerDoubleTapGestureRecognizer.get()];
777
778     [_twoFingerSingleTapGestureRecognizer setDelegate:nil];
779     [self removeGestureRecognizer:_twoFingerSingleTapGestureRecognizer.get()];
780
781     _layerTreeTransactionIdAtLastTouchStart = 0;
782
783 #if ENABLE(DATA_INTERACTION)
784     [existingLocalDragSessionContext(_dragDropInteractionState.dragSession()) cleanUpTemporaryDirectories];
785     [self teardownDataInteractionDelegates];
786 #endif
787
788     _inspectorNodeSearchEnabled = NO;
789     if (_inspectorNodeSearchGestureRecognizer) {
790         [_inspectorNodeSearchGestureRecognizer setDelegate:nil];
791         [self removeGestureRecognizer:_inspectorNodeSearchGestureRecognizer.get()];
792         _inspectorNodeSearchGestureRecognizer = nil;
793     }
794
795 #if HAVE(LINK_PREVIEW)
796     [self _unregisterPreview];
797 #endif
798
799     if (_fileUploadPanel) {
800         [_fileUploadPanel setDelegate:nil];
801         [_fileUploadPanel dismiss];
802         _fileUploadPanel = nil;
803     }
804
805 #if !PLATFORM(WATCHOS) && !PLATFORM(APPLETV)
806     if (_shareSheet) {
807         [_shareSheet setDelegate:nil];
808         [_shareSheet dismiss];
809         _shareSheet = nil;
810     }
811 #endif
812
813     _inputViewUpdateDeferrer = nullptr;
814     _assistedNodeInformation = { };
815     
816     [_keyboardScrollingAnimator invalidate];
817     _keyboardScrollingAnimator = nil;
818
819 #if ENABLE(DATALIST_ELEMENT)
820     _dataListTextSuggestionsInputView = nil;
821     _dataListTextSuggestions = nil;
822 #endif
823
824     _hasSetUpInteractions = NO;
825 }
826
827 - (void)_removeDefaultGestureRecognizers
828 {
829     [self removeGestureRecognizer:_touchEventGestureRecognizer.get()];
830     [self removeGestureRecognizer:_singleTapGestureRecognizer.get()];
831     [self removeGestureRecognizer:_highlightLongPressGestureRecognizer.get()];
832     [self removeGestureRecognizer:_doubleTapGestureRecognizer.get()];
833     [self removeGestureRecognizer:_nonBlockingDoubleTapGestureRecognizer.get()];
834     [self removeGestureRecognizer:_twoFingerDoubleTapGestureRecognizer.get()];
835     [self removeGestureRecognizer:_twoFingerSingleTapGestureRecognizer.get()];
836 #if PLATFORM(IOSMAC)
837     [self removeGestureRecognizer:_hoverGestureRecognizer.get()];
838 #endif
839 }
840
841 - (void)_addDefaultGestureRecognizers
842 {
843     [self addGestureRecognizer:_touchEventGestureRecognizer.get()];
844     [self addGestureRecognizer:_singleTapGestureRecognizer.get()];
845     [self addGestureRecognizer:_highlightLongPressGestureRecognizer.get()];
846     [self addGestureRecognizer:_doubleTapGestureRecognizer.get()];
847     [self addGestureRecognizer:_nonBlockingDoubleTapGestureRecognizer.get()];
848     [self addGestureRecognizer:_twoFingerDoubleTapGestureRecognizer.get()];
849     [self addGestureRecognizer:_twoFingerSingleTapGestureRecognizer.get()];
850 #if PLATFORM(IOSMAC)
851     [self addGestureRecognizer:_hoverGestureRecognizer.get()];
852 #endif
853 }
854
855 - (UIView *)unscaledView
856 {
857     return _interactionViewsContainerView.get();
858 }
859
860 - (CGFloat)inverseScale
861 {
862     return 1 / [[self layer] transform].m11;
863 }
864
865 - (UIScrollView *)_scroller
866 {
867     return [_webView scrollView];
868 }
869
870 - (CGRect)unobscuredContentRect
871 {
872     return _page->unobscuredContentRect();
873 }
874
875
876 #pragma mark - UITextAutoscrolling
877 - (void)startAutoscroll:(CGPoint)pointInDocument
878 {
879     _page->startAutoscrollAtPosition(pointInDocument);
880 }
881
882 - (void)cancelAutoscroll
883 {
884     _page->cancelAutoscroll();
885 }
886
887 - (void)scrollSelectionToVisible:(BOOL)animated
888 {
889     // Used to scroll selection on keyboard up; we already scroll to visible.
890 }
891
892
893 - (void)observeValueForKeyPath:(NSString *)keyPath ofObject:(id)object change:(NSDictionary *)change context:(void *)context
894 {
895     ASSERT([keyPath isEqualToString:@"transform"]);
896     ASSERT(object == self.layer);
897
898     if ([UIView _isInAnimationBlock] && _page->editorState().selectionIsNone) {
899         // If the utility views are not already visible, we don't want them to become visible during the animation since
900         // they could not start from a reasonable state.
901         // This is not perfect since views could also get updated during the animation, in practice this is rare and the end state
902         // remains correct.
903         [self _cancelInteraction];
904         [_interactionViewsContainerView setHidden:YES];
905         [UIView _addCompletion:^(BOOL){ [_interactionViewsContainerView setHidden:NO]; }];
906     }
907
908     _selectionNeedsUpdate = YES;
909     [self _updateChangedSelection:YES];
910     [self _updateTapHighlight];
911 }
912
913 - (void)_enableInspectorNodeSearch
914 {
915     _inspectorNodeSearchEnabled = YES;
916
917     [self _cancelInteraction];
918
919     [self _removeDefaultGestureRecognizers];
920     _inspectorNodeSearchGestureRecognizer = adoptNS([[WKInspectorNodeSearchGestureRecognizer alloc] initWithTarget:self action:@selector(_inspectorNodeSearchRecognized:)]);
921     [self addGestureRecognizer:_inspectorNodeSearchGestureRecognizer.get()];
922 }
923
924 - (void)_disableInspectorNodeSearch
925 {
926     _inspectorNodeSearchEnabled = NO;
927
928     [self _addDefaultGestureRecognizers];
929     [self removeGestureRecognizer:_inspectorNodeSearchGestureRecognizer.get()];
930     _inspectorNodeSearchGestureRecognizer = nil;
931 }
932
933 - (UIView *)hitTest:(CGPoint)point withEvent:(::UIEvent *)event
934 {
935     for (UIView *subView in [_interactionViewsContainerView.get() subviews]) {
936         UIView *hitView = [subView hitTest:[subView convertPoint:point fromView:self] withEvent:event];
937         if (hitView)
938             return hitView;
939     }
940     return [super hitTest:point withEvent:event];
941 }
942
943 - (const InteractionInformationAtPosition&)positionInformation
944 {
945     return _positionInformation;
946 }
947
948 - (void)setInputDelegate:(id <UITextInputDelegate>)inputDelegate
949 {
950     _inputDelegate = inputDelegate;
951 }
952
953 - (id <UITextInputDelegate>)inputDelegate
954 {
955     return _inputDelegate.getAutoreleased();
956 }
957
958 - (CGPoint)lastInteractionLocation
959 {
960     return _lastInteractionLocation;
961 }
962
963 - (BOOL)shouldHideSelectionWhenScrolling
964 {
965     if (_isEditable)
966         return _assistedNodeInformation.insideFixedPosition;
967
968     auto& editorState = _page->editorState();
969     return !editorState.isMissingPostLayoutData && editorState.postLayoutData().insideFixedPosition;
970 }
971
972 - (BOOL)isEditable
973 {
974     return _isEditable;
975 }
976
977 - (BOOL)setIsEditable:(BOOL)isEditable
978 {
979     if (isEditable == _isEditable)
980         return NO;
981
982     _isEditable = isEditable;
983     return YES;
984 }
985
986 - (void)_endEditing
987 {
988     [_inputPeripheral endEditing];
989     [_formInputSession endEditing];
990 #if ENABLE(DATALIST_ELEMENT)
991     [_dataListTextSuggestionsInputView controlEndEditing];
992 #endif
993 }
994
995 - (BOOL)canBecomeFirstResponder
996 {
997     return _becomingFirstResponder;
998 }
999
1000 - (BOOL)canBecomeFirstResponderForWebView
1001 {
1002     if (_resigningFirstResponder)
1003         return NO;
1004     // We might want to return something else
1005     // if we decide to enable/disable interaction programmatically.
1006     return YES;
1007 }
1008
1009 - (BOOL)becomeFirstResponder
1010 {
1011     return [_webView becomeFirstResponder];
1012 }
1013
1014 - (BOOL)becomeFirstResponderForWebView
1015 {
1016     if (_resigningFirstResponder)
1017         return NO;
1018
1019     BOOL didBecomeFirstResponder;
1020     {
1021         SetForScope<BOOL> becomingFirstResponder { _becomingFirstResponder, YES };
1022         didBecomeFirstResponder = [super becomeFirstResponder];
1023     }
1024
1025     if (didBecomeFirstResponder && [self canShowNonEmptySelectionView])
1026         [_textSelectionAssistant activateSelection];
1027
1028     return didBecomeFirstResponder;
1029 }
1030
1031 - (BOOL)resignFirstResponder
1032 {
1033     return [_webView resignFirstResponder];
1034 }
1035
1036 - (BOOL)resignFirstResponderForWebView
1037 {
1038     // FIXME: Maybe we should call resignFirstResponder on the superclass
1039     // and do nothing if the return value is NO.
1040
1041     _resigningFirstResponder = YES;
1042     if (!_webView._retainingActiveFocusedState) {
1043         // We need to complete the editing operation before we blur the element.
1044         [self _endEditing];
1045         _page->blurAssistedNode();
1046     }
1047
1048     [self _cancelInteraction];
1049     [_textSelectionAssistant deactivateSelection];
1050     
1051     _inputViewUpdateDeferrer = nullptr;
1052
1053     bool superDidResign = [super resignFirstResponder];
1054
1055     _resigningFirstResponder = NO;
1056
1057     return superDidResign;
1058 }
1059
1060 - (void)_webTouchEventsRecognized:(UIWebTouchEventsGestureRecognizer *)gestureRecognizer
1061 {
1062     if (!_page->isValid())
1063         return;
1064
1065     const _UIWebTouchEvent* lastTouchEvent = gestureRecognizer.lastTouchEvent;
1066
1067     _lastInteractionLocation = lastTouchEvent->locationInDocumentCoordinates;
1068     if (lastTouchEvent->type == UIWebTouchEventTouchBegin)
1069         _layerTreeTransactionIdAtLastTouchStart = downcast<RemoteLayerTreeDrawingAreaProxy>(*_page->drawingArea()).lastCommittedLayerTreeTransactionID();
1070
1071 #if ENABLE(TOUCH_EVENTS)
1072     NativeWebTouchEvent nativeWebTouchEvent(lastTouchEvent);
1073     nativeWebTouchEvent.setCanPreventNativeGestures(!_canSendTouchEventsAsynchronously || [gestureRecognizer isDefaultPrevented]);
1074
1075     if (_canSendTouchEventsAsynchronously)
1076         _page->handleTouchEventAsynchronously(nativeWebTouchEvent);
1077     else
1078         _page->handleTouchEventSynchronously(nativeWebTouchEvent);
1079
1080     if (nativeWebTouchEvent.allTouchPointsAreReleased())
1081         _canSendTouchEventsAsynchronously = NO;
1082 #endif
1083 }
1084
1085 - (void)_inspectorNodeSearchRecognized:(UIGestureRecognizer *)gestureRecognizer
1086 {
1087     ASSERT(_inspectorNodeSearchEnabled);
1088     [self _resetIsDoubleTapPending];
1089
1090     CGPoint point = [gestureRecognizer locationInView:self];
1091
1092     switch (gestureRecognizer.state) {
1093     case UIGestureRecognizerStateBegan:
1094     case UIGestureRecognizerStateChanged:
1095         _page->inspectorNodeSearchMovedToPosition(point);
1096         break;
1097     case UIGestureRecognizerStateEnded:
1098     case UIGestureRecognizerStateCancelled:
1099     default: // To ensure we turn off node search.
1100         _page->inspectorNodeSearchEndedAtPosition(point);
1101         break;
1102     }
1103 }
1104
1105 static FloatQuad inflateQuad(const FloatQuad& quad, float inflateSize)
1106 {
1107     // We sort the output points like this (as expected by the highlight view):
1108     //  p2------p3
1109     //  |       |
1110     //  p1------p4
1111
1112     // 1) Sort the points horizontally.
1113     FloatPoint points[4] = { quad.p1(), quad.p4(), quad.p2(), quad.p3() };
1114     if (points[0].x() > points[1].x())
1115         std::swap(points[0], points[1]);
1116     if (points[2].x() > points[3].x())
1117         std::swap(points[2], points[3]);
1118
1119     if (points[0].x() > points[2].x())
1120         std::swap(points[0], points[2]);
1121     if (points[1].x() > points[3].x())
1122         std::swap(points[1], points[3]);
1123
1124     if (points[1].x() > points[2].x())
1125         std::swap(points[1], points[2]);
1126
1127     // 2) Swap them vertically to have the output points [p2, p1, p3, p4].
1128     if (points[1].y() < points[0].y())
1129         std::swap(points[0], points[1]);
1130     if (points[3].y() < points[2].y())
1131         std::swap(points[2], points[3]);
1132
1133     // 3) Adjust the positions.
1134     points[0].move(-inflateSize, -inflateSize);
1135     points[1].move(-inflateSize, inflateSize);
1136     points[2].move(inflateSize, -inflateSize);
1137     points[3].move(inflateSize, inflateSize);
1138
1139     return FloatQuad(points[1], points[0], points[2], points[3]);
1140 }
1141
1142 #if ENABLE(TOUCH_EVENTS)
1143 - (void)_webTouchEvent:(const WebKit::NativeWebTouchEvent&)touchEvent preventsNativeGestures:(BOOL)preventsNativeGesture
1144 {
1145     if (preventsNativeGesture) {
1146         _highlightLongPressCanClick = NO;
1147
1148         _canSendTouchEventsAsynchronously = YES;
1149         [_touchEventGestureRecognizer setDefaultPrevented:YES];
1150     }
1151 }
1152 #endif
1153
1154 static NSValue *nsSizeForTapHighlightBorderRadius(WebCore::IntSize borderRadius, CGFloat borderRadiusScale)
1155 {
1156     return [NSValue valueWithCGSize:CGSizeMake((borderRadius.width() * borderRadiusScale) + minimumTapHighlightRadius, (borderRadius.height() * borderRadiusScale) + minimumTapHighlightRadius)];
1157 }
1158
1159 - (void)_updateTapHighlight
1160 {
1161     if (![_highlightView superview])
1162         return;
1163
1164     {
1165         RetainPtr<UIColor> highlightUIKitColor = adoptNS([[UIColor alloc] initWithCGColor:cachedCGColor(_tapHighlightInformation.color)]);
1166         [_highlightView setColor:highlightUIKitColor.get()];
1167     }
1168
1169     CGFloat selfScale = self.layer.transform.m11;
1170     bool allHighlightRectsAreRectilinear = true;
1171     float deviceScaleFactor = _page->deviceScaleFactor();
1172     const Vector<WebCore::FloatQuad>& highlightedQuads = _tapHighlightInformation.quads;
1173     const size_t quadCount = highlightedQuads.size();
1174     RetainPtr<NSMutableArray> rects = adoptNS([[NSMutableArray alloc] initWithCapacity:static_cast<const NSUInteger>(quadCount)]);
1175     for (size_t i = 0; i < quadCount; ++i) {
1176         const FloatQuad& quad = highlightedQuads[i];
1177         if (quad.isRectilinear()) {
1178             FloatRect boundingBox = quad.boundingBox();
1179             boundingBox.scale(selfScale);
1180             boundingBox.inflate(minimumTapHighlightRadius);
1181             CGRect pixelAlignedRect = static_cast<CGRect>(encloseRectToDevicePixels(boundingBox, deviceScaleFactor));
1182             [rects addObject:[NSValue valueWithCGRect:pixelAlignedRect]];
1183         } else {
1184             allHighlightRectsAreRectilinear = false;
1185             rects.clear();
1186             break;
1187         }
1188     }
1189
1190     if (allHighlightRectsAreRectilinear)
1191         [_highlightView setFrames:rects.get() boundaryRect:_page->exposedContentRect()];
1192     else {
1193         RetainPtr<NSMutableArray> quads = adoptNS([[NSMutableArray alloc] initWithCapacity:static_cast<const NSUInteger>(quadCount)]);
1194         for (size_t i = 0; i < quadCount; ++i) {
1195             FloatQuad quad = highlightedQuads[i];
1196             quad.scale(selfScale);
1197             FloatQuad extendedQuad = inflateQuad(quad, minimumTapHighlightRadius);
1198             [quads addObject:[NSValue valueWithCGPoint:extendedQuad.p1()]];
1199             [quads addObject:[NSValue valueWithCGPoint:extendedQuad.p2()]];
1200             [quads addObject:[NSValue valueWithCGPoint:extendedQuad.p3()]];
1201             [quads addObject:[NSValue valueWithCGPoint:extendedQuad.p4()]];
1202         }
1203         [_highlightView setQuads:quads.get() boundaryRect:_page->exposedContentRect()];
1204     }
1205
1206     RetainPtr<NSMutableArray> borderRadii = adoptNS([[NSMutableArray alloc] initWithCapacity:4]);
1207     [borderRadii addObject:nsSizeForTapHighlightBorderRadius(_tapHighlightInformation.topLeftRadius, selfScale)];
1208     [borderRadii addObject:nsSizeForTapHighlightBorderRadius(_tapHighlightInformation.topRightRadius, selfScale)];
1209     [borderRadii addObject:nsSizeForTapHighlightBorderRadius(_tapHighlightInformation.bottomLeftRadius, selfScale)];
1210     [borderRadii addObject:nsSizeForTapHighlightBorderRadius(_tapHighlightInformation.bottomRightRadius, selfScale)];
1211     [_highlightView setCornerRadii:borderRadii.get()];
1212 }
1213
1214 - (void)_showTapHighlight
1215 {
1216     auto shouldPaintTapHighlight = [&](const FloatRect& rect) {
1217         static const float highlightPaintThreshold = 0.3; // 30%
1218         float highlightArea = 0;
1219         for (auto highlightQuad : _tapHighlightInformation.quads) {
1220             auto boundingBox = highlightQuad.boundingBox();
1221             highlightArea += boundingBox.area(); 
1222             if (boundingBox.width() > (rect.width() * highlightPaintThreshold) || boundingBox.height() > (rect.height() * highlightPaintThreshold))
1223                 return false;
1224         }
1225         return highlightArea < rect.area() * highlightPaintThreshold;
1226     };
1227
1228     if (!shouldPaintTapHighlight(_page->unobscuredContentRect()) && !_showDebugTapHighlightsForFastClicking)
1229         return;
1230
1231     if (!_highlightView) {
1232         _highlightView = adoptNS([[_UIHighlightView alloc] initWithFrame:CGRectZero]);
1233         [_highlightView setUserInteractionEnabled:NO];
1234         [_highlightView setOpaque:NO];
1235         [_highlightView setCornerRadius:minimumTapHighlightRadius];
1236     }
1237     [_highlightView layer].opacity = 1;
1238     [_interactionViewsContainerView addSubview:_highlightView.get()];
1239     [self _updateTapHighlight];
1240 }
1241
1242 - (void)_didGetTapHighlightForRequest:(uint64_t)requestID color:(const WebCore::Color&)color quads:(const Vector<WebCore::FloatQuad>&)highlightedQuads topLeftRadius:(const WebCore::IntSize&)topLeftRadius topRightRadius:(const WebCore::IntSize&)topRightRadius bottomLeftRadius:(const WebCore::IntSize&)bottomLeftRadius bottomRightRadius:(const WebCore::IntSize&)bottomRightRadius
1243 {
1244     if (!_isTapHighlightIDValid || _latestTapID != requestID)
1245         return;
1246
1247     if (hasAssistedNode(_assistedNodeInformation) && _positionInformation.nodeAtPositionIsAssistedNode)
1248         return;
1249
1250     _isTapHighlightIDValid = NO;
1251
1252     _tapHighlightInformation.quads = highlightedQuads;
1253     _tapHighlightInformation.topLeftRadius = topLeftRadius;
1254     _tapHighlightInformation.topRightRadius = topRightRadius;
1255     _tapHighlightInformation.bottomLeftRadius = bottomLeftRadius;
1256     _tapHighlightInformation.bottomRightRadius = bottomRightRadius;
1257     if (_showDebugTapHighlightsForFastClicking)
1258         _tapHighlightInformation.color = [self _tapHighlightColorForFastClick:![_doubleTapGestureRecognizer isEnabled]];
1259     else
1260         _tapHighlightInformation.color = color;
1261
1262     if (_potentialTapInProgress) {
1263         _hasTapHighlightForPotentialTap = YES;
1264         return;
1265     }
1266
1267     [self _showTapHighlight];
1268     if (_isExpectingFastSingleTapCommit) {
1269         [self _finishInteraction];
1270         if (!_potentialTapInProgress)
1271             _isExpectingFastSingleTapCommit = NO;
1272     }
1273 }
1274
1275 - (BOOL)_mayDisableDoubleTapGesturesDuringSingleTap
1276 {
1277     return _potentialTapInProgress;
1278 }
1279
1280 - (void)_disableDoubleTapGesturesDuringTapIfNecessary:(uint64_t)requestID
1281 {
1282     if (_latestTapID != requestID)
1283         return;
1284
1285     [self _setDoubleTapGesturesEnabled:NO];
1286 }
1287
1288 - (void)_cancelLongPressGestureRecognizer
1289 {
1290     [_highlightLongPressGestureRecognizer cancel];
1291 }
1292
1293 - (void)_didScroll
1294 {
1295     [self _cancelLongPressGestureRecognizer];
1296     [self _cancelInteraction];
1297 }
1298
1299 - (void)_scrollingNodeScrollingWillBegin
1300 {
1301     [_textSelectionAssistant willStartScrollingOverflow];    
1302 }
1303
1304 - (void)_scrollingNodeScrollingDidEnd
1305 {
1306     // If scrolling ends before we've received a selection update,
1307     // we postpone showing the selection until the update is received.
1308     if (!_selectionNeedsUpdate) {
1309         _shouldRestoreSelection = YES;
1310         return;
1311     }
1312     [self _updateChangedSelection];
1313     [_textSelectionAssistant didEndScrollingOverflow];
1314 }
1315
1316 - (BOOL)_requiresKeyboardWhenFirstResponder
1317 {
1318     // FIXME: We should add the logic to handle keyboard visibility during focus redirects.
1319     switch (_assistedNodeInformation.elementType) {
1320     case InputType::None:
1321         return NO;
1322     case InputType::Select:
1323 #if ENABLE(INPUT_TYPE_COLOR)
1324     case InputType::Color:
1325 #endif
1326         return !currentUserInterfaceIdiomIsPad();
1327     case InputType::Date:
1328     case InputType::Month:
1329     case InputType::DateTimeLocal:
1330     case InputType::Time:
1331         return !currentUserInterfaceIdiomIsPad();
1332     default:
1333         return !_assistedNodeInformation.isReadOnly;
1334     }
1335     return NO;
1336 }
1337
1338 - (BOOL)_requiresKeyboardResetOnReload
1339 {
1340     return YES;
1341 }
1342
1343 - (void)_displayFormNodeInputView
1344 {
1345     if (!self.suppressAssistantSelectionView) {
1346         // In case user scaling is force enabled, do not use that scaling when zooming in with an input field.
1347         // Zooming above the page's default scale factor should only happen when the user performs it.
1348         [self _zoomToFocusRect:_assistedNodeInformation.elementRect
1349             selectionRect:_didAccessoryTabInitiateFocus ? IntRect() : _assistedNodeInformation.selectionRect
1350             insideFixed:_assistedNodeInformation.insideFixedPosition
1351             fontSize:_assistedNodeInformation.nodeFontSize
1352             minimumScale:_assistedNodeInformation.minimumScaleFactor
1353             maximumScale:_assistedNodeInformation.maximumScaleFactorIgnoringAlwaysScalable
1354             allowScaling:_assistedNodeInformation.allowsUserScalingIgnoringAlwaysScalable && !currentUserInterfaceIdiomIsPad()
1355             forceScroll:(_assistedNodeInformation.inputMode == InputMode::None) ? !currentUserInterfaceIdiomIsPad() : [self requiresAccessoryView]];
1356     }
1357
1358     _didAccessoryTabInitiateFocus = NO;
1359     [self _ensureFormAccessoryView];
1360     [self _updateAccessory];
1361 }
1362
1363 - (UIView *)inputView
1364 {
1365     if (!hasAssistedNode(_assistedNodeInformation))
1366         return nil;
1367
1368     if (_assistedNodeInformation.inputMode == InputMode::None)
1369         return [[UIView new] autorelease];
1370
1371     if (!_inputPeripheral) {
1372         switch (_assistedNodeInformation.elementType) {
1373         case InputType::Select:
1374             _inputPeripheral = adoptNS([[WKFormSelectControl alloc] initWithView:self]);
1375             break;
1376 #if ENABLE(INPUT_TYPE_COLOR)
1377         case InputType::Color:
1378             _inputPeripheral = adoptNS([[WKFormColorControl alloc] initWithView:self]);
1379             break;
1380 #endif
1381         default:
1382             _inputPeripheral = adoptNS([[WKFormInputControl alloc] initWithView:self]);
1383             break;
1384         }
1385     } else
1386         [self _displayFormNodeInputView];
1387
1388     if (UIView *customInputView = [_formInputSession customInputView])
1389         return customInputView;
1390
1391 #if ENABLE(DATALIST_ELEMENT)
1392     if (_dataListTextSuggestionsInputView)
1393         return _dataListTextSuggestionsInputView.get();
1394 #endif
1395
1396     return [_inputPeripheral assistantView];
1397 }
1398
1399 - (CGRect)_selectionClipRect
1400 {
1401     if (!hasAssistedNode(_assistedNodeInformation))
1402         return CGRectNull;
1403     return _page->editorState().postLayoutData().selectionClipRect;
1404 }
1405
1406 - (BOOL)gestureRecognizer:(UIGestureRecognizer *)preventingGestureRecognizer canPreventGestureRecognizer:(UIGestureRecognizer *)preventedGestureRecognizer
1407 {
1408     // A long-press gesture can not be recognized while panning, but a pan can be recognized
1409     // during a long-press gesture.
1410     BOOL shouldNotPreventScrollViewGestures = preventingGestureRecognizer == _highlightLongPressGestureRecognizer || preventingGestureRecognizer == _longPressGestureRecognizer;
1411     return !(shouldNotPreventScrollViewGestures
1412         && ([preventedGestureRecognizer isKindOfClass:NSClassFromString(@"UIScrollViewPanGestureRecognizer")] || [preventedGestureRecognizer isKindOfClass:NSClassFromString(@"UIScrollViewPinchGestureRecognizer")]));
1413 }
1414
1415 - (BOOL)gestureRecognizer:(UIGestureRecognizer *)preventedGestureRecognizer canBePreventedByGestureRecognizer:(UIGestureRecognizer *)preventingGestureRecognizer {
1416     // Don't allow the highlight to be prevented by a selection gesture. Press-and-hold on a link should highlight the link, not select it.
1417     bool isForcePressGesture = NO;
1418 #if __IPHONE_OS_VERSION_MIN_REQUIRED >= 120000
1419     isForcePressGesture = (preventingGestureRecognizer == _textSelectionAssistant.get().forcePressGesture);
1420 #endif
1421 #if PLATFORM(IOSMAC)
1422     if ((preventingGestureRecognizer == _textSelectionAssistant.get().loupeGesture) && (preventedGestureRecognizer == _highlightLongPressGestureRecognizer || preventedGestureRecognizer == _longPressGestureRecognizer || preventedGestureRecognizer == _textSelectionAssistant.get().forcePressGesture))
1423         return YES;
1424 #endif
1425     
1426     if ((preventingGestureRecognizer == _textSelectionAssistant.get().loupeGesture || isForcePressGesture) && (preventedGestureRecognizer == _highlightLongPressGestureRecognizer || preventedGestureRecognizer == _longPressGestureRecognizer))
1427         return NO;
1428
1429     return YES;
1430 }
1431
1432 static inline bool isSamePair(UIGestureRecognizer *a, UIGestureRecognizer *b, UIGestureRecognizer *x, UIGestureRecognizer *y)
1433 {
1434     return (a == x && b == y) || (b == x && a == y);
1435 }
1436
1437 - (BOOL)gestureRecognizer:(UIGestureRecognizer *)gestureRecognizer shouldRecognizeSimultaneouslyWithGestureRecognizer:(UIGestureRecognizer*)otherGestureRecognizer
1438 {
1439     if (isSamePair(gestureRecognizer, otherGestureRecognizer, _highlightLongPressGestureRecognizer.get(), _longPressGestureRecognizer.get()))
1440         return YES;
1441
1442 #if __IPHONE_OS_VERSION_MIN_REQUIRED >= 120000
1443 #if PLATFORM(IOSMAC)
1444     if (isSamePair(gestureRecognizer, otherGestureRecognizer, _textSelectionAssistant.get().loupeGesture, _textSelectionAssistant.get().forcePressGesture))
1445         return YES;
1446
1447     if (isSamePair(gestureRecognizer, otherGestureRecognizer, _singleTapGestureRecognizer.get(), _textSelectionAssistant.get().loupeGesture))
1448         return YES;
1449
1450     if ([gestureRecognizer isKindOfClass:[UIHoverGestureRecognizer class]] || [otherGestureRecognizer isKindOfClass:[UIHoverGestureRecognizer class]])
1451         return YES;
1452 #endif
1453     if (isSamePair(gestureRecognizer, otherGestureRecognizer, _highlightLongPressGestureRecognizer.get(), _textSelectionAssistant.get().forcePressGesture))
1454         return YES;
1455 #endif
1456     if (isSamePair(gestureRecognizer, otherGestureRecognizer, _singleTapGestureRecognizer.get(), _textSelectionAssistant.get().singleTapGesture))
1457         return YES;
1458
1459     if (isSamePair(gestureRecognizer, otherGestureRecognizer, _singleTapGestureRecognizer.get(), _nonBlockingDoubleTapGestureRecognizer.get()))
1460         return YES;
1461
1462     if (isSamePair(gestureRecognizer, otherGestureRecognizer, _highlightLongPressGestureRecognizer.get(), _nonBlockingDoubleTapGestureRecognizer.get()))
1463         return YES;
1464
1465     if (isSamePair(gestureRecognizer, otherGestureRecognizer, _highlightLongPressGestureRecognizer.get(), _previewSecondaryGestureRecognizer.get()))
1466         return YES;
1467
1468     if (isSamePair(gestureRecognizer, otherGestureRecognizer, _highlightLongPressGestureRecognizer.get(), _previewGestureRecognizer.get()))
1469         return YES;
1470
1471     return NO;
1472 }
1473
1474 - (BOOL)gestureRecognizer:(UIGestureRecognizer *)gestureRecognizer shouldRequireFailureOfGestureRecognizer:(UIGestureRecognizer *)otherGestureRecognizer
1475 {
1476     if (gestureRecognizer == _touchEventGestureRecognizer && [_webView _isNavigationSwipeGestureRecognizer:otherGestureRecognizer])
1477         return YES;
1478
1479     return NO;
1480 }
1481
1482 - (void)_showImageSheet
1483 {
1484     [_actionSheetAssistant showImageSheet];
1485 }
1486
1487 - (void)_showAttachmentSheet
1488 {
1489     id <WKUIDelegatePrivate> uiDelegate = static_cast<id <WKUIDelegatePrivate>>([_webView UIDelegate]);
1490     if (![uiDelegate respondsToSelector:@selector(_webView:showCustomSheetForElement:)])
1491         return;
1492
1493     auto element = adoptNS([[_WKActivatedElementInfo alloc] _initWithType:_WKActivatedElementTypeAttachment URL:(NSURL *)_positionInformation.url location:_positionInformation.request.point title:_positionInformation.title ID:_positionInformation.idAttribute rect:_positionInformation.bounds image:nil]);
1494     [uiDelegate _webView:_webView showCustomSheetForElement:element.get()];
1495 }
1496
1497 - (void)_showLinkSheet
1498 {
1499     [_actionSheetAssistant showLinkSheet];
1500 }
1501
1502 - (void)_showDataDetectorsSheet
1503 {
1504     [_actionSheetAssistant showDataDetectorsSheet];
1505 }
1506
1507 - (SEL)_actionForLongPressFromPositionInformation:(const InteractionInformationAtPosition&)positionInformation
1508 {
1509     if (!_webView.configuration._longPressActionsEnabled)
1510         return nil;
1511
1512     if (!positionInformation.touchCalloutEnabled)
1513         return nil;
1514
1515     if (positionInformation.isImage)
1516         return @selector(_showImageSheet);
1517
1518     if (positionInformation.isLink) {
1519 #if ENABLE(DATA_DETECTION)
1520         if (DataDetection::canBePresentedByDataDetectors(positionInformation.url))
1521             return @selector(_showDataDetectorsSheet);
1522 #endif
1523         return @selector(_showLinkSheet);
1524     }
1525     if (positionInformation.isAttachment)
1526         return @selector(_showAttachmentSheet);
1527
1528     return nil;
1529 }
1530
1531 - (SEL)_actionForLongPress
1532 {
1533     return [self _actionForLongPressFromPositionInformation:_positionInformation];
1534 }
1535
1536 - (InteractionInformationAtPosition)currentPositionInformation
1537 {
1538     return _positionInformation;
1539 }
1540
1541 - (void)doAfterPositionInformationUpdate:(void (^)(InteractionInformationAtPosition))action forRequest:(InteractionInformationRequest)request
1542 {
1543     if ([self _currentPositionInformationIsValidForRequest:request]) {
1544         // If the most recent position information is already valid, invoke the given action block immediately.
1545         action(_positionInformation);
1546         return;
1547     }
1548
1549     _pendingPositionInformationHandlers.append(InteractionInformationRequestAndCallback(request, action));
1550
1551     if (![self _hasValidOutstandingPositionInformationRequest:request])
1552         [self requestAsynchronousPositionInformationUpdate:request];
1553 }
1554
1555 - (BOOL)ensurePositionInformationIsUpToDate:(WebKit::InteractionInformationRequest)request
1556 {
1557     if ([self _currentPositionInformationIsValidForRequest:request])
1558         return YES;
1559
1560     auto* connection = _page->process().connection();
1561     if (!connection)
1562         return NO;
1563
1564     if ([self _hasValidOutstandingPositionInformationRequest:request])
1565         return connection->waitForAndDispatchImmediately<Messages::WebPageProxy::DidReceivePositionInformation>(_page->pageID(), 1_s, IPC::WaitForOption::InterruptWaitingIfSyncMessageArrives);
1566
1567     _hasValidPositionInformation = _page->process().sendSync(Messages::WebPage::GetPositionInformation(request), Messages::WebPage::GetPositionInformation::Reply(_positionInformation), _page->pageID(), 1_s);
1568     
1569     // FIXME: We need to clean up these handlers in the event that we are not able to collect data, or if the WebProcess crashes.
1570     if (_hasValidPositionInformation)
1571         [self _invokeAndRemovePendingHandlersValidForCurrentPositionInformation];
1572
1573     return _hasValidPositionInformation;
1574 }
1575
1576 - (void)requestAsynchronousPositionInformationUpdate:(WebKit::InteractionInformationRequest)request
1577 {
1578     if ([self _currentPositionInformationIsValidForRequest:request])
1579         return;
1580
1581     _outstandingPositionInformationRequest = request;
1582
1583     _page->requestPositionInformation(request);
1584 }
1585
1586 - (BOOL)_currentPositionInformationIsValidForRequest:(const InteractionInformationRequest&)request
1587 {
1588     return _hasValidPositionInformation && _positionInformation.request.isValidForRequest(request);
1589 }
1590
1591 - (BOOL)_hasValidOutstandingPositionInformationRequest:(const InteractionInformationRequest&)request
1592 {
1593     return _outstandingPositionInformationRequest && _outstandingPositionInformationRequest->isValidForRequest(request);
1594 }
1595
1596 - (BOOL)_currentPositionInformationIsApproximatelyValidForRequest:(const InteractionInformationRequest&)request
1597 {
1598     return _hasValidPositionInformation && _positionInformation.request.isApproximatelyValidForRequest(request);
1599 }
1600
1601 - (void)_invokeAndRemovePendingHandlersValidForCurrentPositionInformation
1602 {
1603     ASSERT(_hasValidPositionInformation);
1604
1605     ++_positionInformationCallbackDepth;
1606     auto updatedPositionInformation = _positionInformation;
1607
1608     for (size_t index = 0; index < _pendingPositionInformationHandlers.size(); ++index) {
1609         auto requestAndHandler = _pendingPositionInformationHandlers[index];
1610         if (!requestAndHandler)
1611             continue;
1612
1613         if (![self _currentPositionInformationIsValidForRequest:requestAndHandler->first])
1614             continue;
1615
1616         _pendingPositionInformationHandlers[index] = std::nullopt;
1617
1618         if (requestAndHandler->second)
1619             requestAndHandler->second(updatedPositionInformation);
1620     }
1621
1622     if (--_positionInformationCallbackDepth)
1623         return;
1624
1625     for (int index = _pendingPositionInformationHandlers.size() - 1; index >= 0; --index) {
1626         if (!_pendingPositionInformationHandlers[index])
1627             _pendingPositionInformationHandlers.remove(index);
1628     }
1629 }
1630
1631 #if ENABLE(DATA_DETECTION)
1632 - (NSArray *)_dataDetectionResults
1633 {
1634     return _page->dataDetectionResults();
1635 }
1636 #endif
1637
1638 - (NSArray<NSValue *> *)_uiTextSelectionRects
1639 {
1640     NSMutableArray *textSelectionRects = [NSMutableArray array];
1641
1642     if (_textSelectionAssistant) {
1643         for (WKTextSelectionRect *selectionRect in [_textSelectionAssistant valueForKeyPath:@"selectionView.selection.selectionRects"])
1644             [textSelectionRects addObject:[NSValue valueWithCGRect:selectionRect.webRect.rect]];
1645     }
1646
1647     return textSelectionRects;
1648 }
1649
1650 - (BOOL)gestureRecognizerShouldBegin:(UIGestureRecognizer *)gestureRecognizer
1651 {
1652     CGPoint point = [gestureRecognizer locationInView:self];
1653
1654     if (gestureRecognizer == _highlightLongPressGestureRecognizer
1655         || gestureRecognizer == _doubleTapGestureRecognizer
1656         || gestureRecognizer == _nonBlockingDoubleTapGestureRecognizer
1657         || gestureRecognizer == _twoFingerDoubleTapGestureRecognizer) {
1658
1659         if (hasAssistedNode(_assistedNodeInformation)) {
1660             // Request information about the position with sync message.
1661             // If the assisted node is the same, prevent the gesture.
1662             if (![self ensurePositionInformationIsUpToDate:InteractionInformationRequest(roundedIntPoint(point))])
1663                 return NO;
1664             if (_positionInformation.nodeAtPositionIsAssistedNode)
1665                 return NO;
1666         }
1667     }
1668
1669     if (gestureRecognizer == _highlightLongPressGestureRecognizer) {
1670         if (hasAssistedNode(_assistedNodeInformation)) {
1671             // This is a different node than the assisted one.
1672             // Prevent the gesture if there is no node.
1673             // Allow the gesture if it is a node that wants highlight or if there is an action for it.
1674             if (!_positionInformation.isElement)
1675                 return NO;
1676             return [self _actionForLongPress] != nil;
1677         }
1678         // We still have no idea about what is at the location.
1679         // Send an async message to find out.
1680         _hasValidPositionInformation = NO;
1681         InteractionInformationRequest request(roundedIntPoint(point));
1682
1683         // If 3D Touch is enabled, asynchronously collect snapshots in the hopes that
1684         // they'll arrive before we have to synchronously request them in
1685         // _interactionShouldBeginFromPreviewItemController.
1686         if (self.traitCollection.forceTouchCapability == UIForceTouchCapabilityAvailable) {
1687             request.includeSnapshot = true;
1688             request.includeLinkIndicator = true;
1689         }
1690
1691         [self requestAsynchronousPositionInformationUpdate:request];
1692         return YES;
1693
1694     }
1695
1696     if (gestureRecognizer == _longPressGestureRecognizer) {
1697         // Use the information retrieved with one of the previous calls
1698         // to gestureRecognizerShouldBegin.
1699         // Force a sync call if not ready yet.
1700         InteractionInformationRequest request(roundedIntPoint(point));
1701         if (![self ensurePositionInformationIsUpToDate:request])
1702             return NO;
1703
1704         if (hasAssistedNode(_assistedNodeInformation)) {
1705             // Prevent the gesture if it is the same node.
1706             if (_positionInformation.nodeAtPositionIsAssistedNode)
1707                 return NO;
1708         } else {
1709             // Prevent the gesture if there is no action for the node.
1710             return [self _actionForLongPress] != nil;
1711         }
1712     }
1713
1714     return YES;
1715 }
1716
1717 - (void)_cancelInteraction
1718 {
1719     _isTapHighlightIDValid = NO;
1720     [_highlightView removeFromSuperview];
1721 }
1722
1723 - (void)_finishInteraction
1724 {
1725     _isTapHighlightIDValid = NO;
1726     CGFloat tapHighlightFadeDuration = _showDebugTapHighlightsForFastClicking ? 0.25 : 0.1;
1727     [UIView animateWithDuration:tapHighlightFadeDuration
1728                      animations:^{
1729                          [_highlightView layer].opacity = 0;
1730                      }
1731                      completion:^(BOOL finished){
1732                          if (finished)
1733                              [_highlightView removeFromSuperview];
1734                      }];
1735 }
1736
1737 - (BOOL)canShowNonEmptySelectionView
1738 {
1739     if (self.suppressAssistantSelectionView)
1740         return NO;
1741
1742     auto& state = _page->editorState();
1743     return !state.isMissingPostLayoutData && !state.selectionIsNone;
1744 }
1745
1746 - (BOOL)hasSelectablePositionAtPoint:(CGPoint)point
1747 {
1748     if (!_webView.configuration._textInteractionGesturesEnabled)
1749         return NO;
1750
1751     if (self.suppressAssistantSelectionView)
1752         return NO;
1753
1754     if (_inspectorNodeSearchEnabled)
1755         return NO;
1756
1757     InteractionInformationRequest request(roundedIntPoint(point));
1758     if (![self ensurePositionInformationIsUpToDate:request])
1759         return NO;
1760
1761 #if ENABLE(DATA_INTERACTION)
1762     if (_positionInformation.hasSelectionAtPosition) {
1763         // If the position might initiate a data interaction, we don't want to consider the content at this position to be selectable.
1764         // FIXME: This should be renamed to something more precise, such as textSelectionShouldRecognizeGestureAtPoint:
1765         return NO;
1766     }
1767 #endif
1768
1769     return _positionInformation.isSelectable;
1770 }
1771
1772 - (BOOL)pointIsNearMarkedText:(CGPoint)point
1773 {
1774     if (!_webView.configuration._textInteractionGesturesEnabled)
1775         return NO;
1776
1777     if (self.suppressAssistantSelectionView)
1778         return NO;
1779
1780     InteractionInformationRequest request(roundedIntPoint(point));
1781     if (![self ensurePositionInformationIsUpToDate:request])
1782         return NO;
1783     return _positionInformation.isNearMarkedText;
1784 }
1785
1786 - (BOOL)textInteractionGesture:(UIWKGestureType)gesture shouldBeginAtPoint:(CGPoint)point
1787 {
1788     if (!_webView.configuration._textInteractionGesturesEnabled)
1789         return NO;
1790
1791     if (self.suppressAssistantSelectionView)
1792         return NO;
1793
1794     InteractionInformationRequest request(roundedIntPoint(point));
1795     if (![self ensurePositionInformationIsUpToDate:request])
1796         return NO;
1797
1798 #if ENABLE(DATA_INTERACTION)
1799     if (_positionInformation.hasSelectionAtPosition && gesture == UIWKGestureLoupe) {
1800         // If the position might initiate data interaction, we don't want to change the selection.
1801         return NO;
1802     }
1803 #endif
1804
1805 #if ENABLE(DATALIST_ELEMENT)
1806     if (_positionInformation.preventTextInteraction)
1807         return NO;
1808 #endif
1809
1810     // If we're currently editing an assisted node, only allow the selection to move within that assisted node.
1811     if (self.isAssistingNode)
1812         return _positionInformation.nodeAtPositionIsAssistedNode;
1813     
1814     // Don't allow double tap text gestures in noneditable content.
1815     if (gesture == UIWKGestureDoubleTap)
1816         return NO;
1817
1818     // If we're selecting something, don't activate highlight.
1819     if (gesture == UIWKGestureLoupe && [self hasSelectablePositionAtPoint:point])
1820         [self _cancelLongPressGestureRecognizer];
1821     
1822     // Otherwise, if we're using a text interaction assistant outside of editing purposes (e.g. the selection mode
1823     // is character granularity) then allow text selection.
1824     return YES;
1825 }
1826
1827 - (NSArray *)webSelectionRectsForSelectionRects:(const Vector<WebCore::SelectionRect>&)selectionRects
1828 {
1829     unsigned size = selectionRects.size();
1830     if (!size)
1831         return nil;
1832
1833     NSMutableArray *webRects = [NSMutableArray arrayWithCapacity:size];
1834     for (unsigned i = 0; i < size; i++) {
1835         const WebCore::SelectionRect& coreRect = selectionRects[i];
1836         WebSelectionRect *webRect = [WebSelectionRect selectionRect];
1837         webRect.rect = coreRect.rect();
1838         webRect.writingDirection = coreRect.direction() == TextDirection::LTR ? WKWritingDirectionLeftToRight : WKWritingDirectionRightToLeft;
1839         webRect.isLineBreak = coreRect.isLineBreak();
1840         webRect.isFirstOnLine = coreRect.isFirstOnLine();
1841         webRect.isLastOnLine = coreRect.isLastOnLine();
1842         webRect.containsStart = coreRect.containsStart();
1843         webRect.containsEnd = coreRect.containsEnd();
1844         webRect.isInFixedPosition = coreRect.isInFixedPosition();
1845         webRect.isHorizontal = coreRect.isHorizontal();
1846         [webRects addObject:webRect];
1847     }
1848
1849     return webRects;
1850 }
1851
1852 - (NSArray *)webSelectionRects
1853 {
1854     if (_page->editorState().isMissingPostLayoutData || _page->editorState().selectionIsNone)
1855         return nil;
1856     const auto& selectionRects = _page->editorState().postLayoutData().selectionRects;
1857     return [self webSelectionRectsForSelectionRects:selectionRects];
1858 }
1859
1860 - (void)_highlightLongPressRecognized:(UILongPressGestureRecognizer *)gestureRecognizer
1861 {
1862     ASSERT(gestureRecognizer == _highlightLongPressGestureRecognizer);
1863     [self _resetIsDoubleTapPending];
1864
1865     _lastInteractionLocation = gestureRecognizer.startPoint;
1866
1867     switch ([gestureRecognizer state]) {
1868     case UIGestureRecognizerStateBegan:
1869         _highlightLongPressCanClick = YES;
1870         cancelPotentialTapIfNecessary(self);
1871         _page->tapHighlightAtPosition([gestureRecognizer startPoint], ++_latestTapID);
1872         _isTapHighlightIDValid = YES;
1873         break;
1874     case UIGestureRecognizerStateEnded:
1875         if (_highlightLongPressCanClick && _positionInformation.isElement) {
1876             [self _attemptClickAtLocation:[gestureRecognizer startPoint]];
1877             [self _finishInteraction];
1878         } else
1879             [self _cancelInteraction];
1880         _highlightLongPressCanClick = NO;
1881         break;
1882     case UIGestureRecognizerStateCancelled:
1883         [self _cancelInteraction];
1884         _highlightLongPressCanClick = NO;
1885         break;
1886     default:
1887         break;
1888     }
1889 }
1890
1891 - (void)_twoFingerSingleTapGestureRecognized:(UITapGestureRecognizer *)gestureRecognizer
1892 {
1893     _isTapHighlightIDValid = YES;
1894     _isExpectingFastSingleTapCommit = YES;
1895     _page->handleTwoFingerTapAtPoint(roundedIntPoint(gestureRecognizer.centroid), ++_latestTapID);
1896 }
1897
1898 - (void)_longPressRecognized:(UILongPressGestureRecognizer *)gestureRecognizer
1899 {
1900     ASSERT(gestureRecognizer == _longPressGestureRecognizer);
1901     [self _resetIsDoubleTapPending];
1902
1903     _lastInteractionLocation = gestureRecognizer.startPoint;
1904
1905     if ([gestureRecognizer state] == UIGestureRecognizerStateBegan) {
1906         SEL action = [self _actionForLongPress];
1907         if (action) {
1908             [self performSelector:action];
1909             [self _cancelLongPressGestureRecognizer];
1910         }
1911     }
1912 }
1913
1914 - (void)_endPotentialTapAndEnableDoubleTapGesturesIfNecessary
1915 {
1916     if (_webView._allowsDoubleTapGestures)
1917         [self _setDoubleTapGesturesEnabled:YES];
1918
1919     _potentialTapInProgress = NO;
1920 }
1921
1922 - (void)_singleTapRecognized:(UITapGestureRecognizer *)gestureRecognizer
1923 {
1924     ASSERT(gestureRecognizer == _singleTapGestureRecognizer);
1925     ASSERT(!_potentialTapInProgress);
1926     [self _resetIsDoubleTapPending];
1927
1928     _page->potentialTapAtPosition(gestureRecognizer.location, ++_latestTapID);
1929     _potentialTapInProgress = YES;
1930     _isTapHighlightIDValid = YES;
1931     _isExpectingFastSingleTapCommit = !_doubleTapGestureRecognizer.get().enabled;
1932 }
1933
1934 static void cancelPotentialTapIfNecessary(WKContentView* contentView)
1935 {
1936     if (contentView->_potentialTapInProgress) {
1937         [contentView _endPotentialTapAndEnableDoubleTapGesturesIfNecessary];
1938         [contentView _cancelInteraction];
1939         contentView->_page->cancelPotentialTap();
1940     }
1941 }
1942
1943 - (void)_singleTapDidReset:(UITapGestureRecognizer *)gestureRecognizer
1944 {
1945     ASSERT(gestureRecognizer == _singleTapGestureRecognizer);
1946     cancelPotentialTapIfNecessary(self);
1947 }
1948
1949 - (void)_commitPotentialTapFailed
1950 {
1951     [self _cancelInteraction];
1952     
1953     _inputViewUpdateDeferrer = nullptr;
1954 }
1955
1956 - (void)_didNotHandleTapAsClick:(const WebCore::IntPoint&)point
1957 {
1958     _inputViewUpdateDeferrer = nullptr;
1959
1960     // FIXME: we should also take into account whether or not the UI delegate
1961     // has handled this notification.
1962 #if ENABLE(DATA_DETECTION)
1963     if (_hasValidPositionInformation && point == _positionInformation.request.point && _positionInformation.isDataDetectorLink) {
1964         [self _showDataDetectorsSheet];
1965         return;
1966     }
1967 #endif
1968
1969     if (!_isDoubleTapPending)
1970         return;
1971
1972     _smartMagnificationController->handleSmartMagnificationGesture(_lastInteractionLocation);
1973     _isDoubleTapPending = NO;
1974 }
1975
1976 - (void)_didCompleteSyntheticClick
1977 {
1978     _inputViewUpdateDeferrer = nullptr;
1979 }
1980
1981 - (void)_singleTapCommited:(UITapGestureRecognizer *)gestureRecognizer
1982 {
1983     ASSERT(gestureRecognizer == _singleTapGestureRecognizer);
1984
1985     if (![self isFirstResponder]) {
1986         if (!_inputViewUpdateDeferrer)
1987             _inputViewUpdateDeferrer = std::make_unique<InputViewUpdateDeferrer>();
1988         [self becomeFirstResponder];
1989     }
1990
1991     ASSERT(_potentialTapInProgress);
1992
1993     // We don't want to clear the selection if it is in editable content.
1994     // The selection could have been set by autofocusing on page load and not
1995     // reflected in the UI process since the user was not interacting with the page.
1996     if (!_page->editorState().isContentEditable)
1997         _page->clearSelection();
1998
1999     _lastInteractionLocation = gestureRecognizer.location;
2000
2001     [self _endPotentialTapAndEnableDoubleTapGesturesIfNecessary];
2002
2003     if (_hasTapHighlightForPotentialTap) {
2004         [self _showTapHighlight];
2005         _hasTapHighlightForPotentialTap = NO;
2006     }
2007
2008     [_inputPeripheral endEditing];
2009     _page->commitPotentialTap(_layerTreeTransactionIdAtLastTouchStart);
2010
2011     if (!_isExpectingFastSingleTapCommit)
2012         [self _finishInteraction];
2013 }
2014
2015 - (void)_doubleTapRecognized:(UITapGestureRecognizer *)gestureRecognizer
2016 {
2017     [self _resetIsDoubleTapPending];
2018     _lastInteractionLocation = gestureRecognizer.location;
2019
2020     _smartMagnificationController->handleSmartMagnificationGesture(gestureRecognizer.location);
2021 }
2022
2023 - (void)_resetIsDoubleTapPending
2024 {
2025     _isDoubleTapPending = NO;
2026 }
2027
2028 - (void)_nonBlockingDoubleTapRecognized:(UITapGestureRecognizer *)gestureRecognizer
2029 {
2030     _lastInteractionLocation = gestureRecognizer.location;
2031     _isDoubleTapPending = YES;
2032 }
2033
2034 - (void)_twoFingerDoubleTapRecognized:(UITapGestureRecognizer *)gestureRecognizer
2035 {
2036     [self _resetIsDoubleTapPending];
2037     _lastInteractionLocation = gestureRecognizer.location;
2038
2039     _smartMagnificationController->handleResetMagnificationGesture(gestureRecognizer.location);
2040 }
2041
2042 - (void)_attemptClickAtLocation:(CGPoint)location
2043 {
2044     if (![self isFirstResponder]) {
2045         if (!_inputViewUpdateDeferrer)
2046             _inputViewUpdateDeferrer = std::make_unique<InputViewUpdateDeferrer>();
2047         [self becomeFirstResponder];
2048     }
2049
2050     [_inputPeripheral endEditing];
2051     _page->handleTap(location, _layerTreeTransactionIdAtLastTouchStart);
2052 }
2053
2054 - (void)setUpTextSelectionAssistant
2055 {
2056     if (!_textSelectionAssistant)
2057         _textSelectionAssistant = adoptNS([[UIWKTextInteractionAssistant alloc] initWithView:self]);
2058     else {
2059         // Reset the gesture recognizers in case editability has changed.
2060         [_textSelectionAssistant setGestureRecognizers];
2061     }
2062 }
2063
2064 - (void)clearSelection
2065 {
2066     [self _stopAssistingNode];
2067     _page->clearSelection();
2068 }
2069
2070 - (void)_positionInformationDidChange:(const InteractionInformationAtPosition&)info
2071 {
2072     _outstandingPositionInformationRequest = std::nullopt;
2073
2074     InteractionInformationAtPosition newInfo = info;
2075     newInfo.mergeCompatibleOptionalInformation(_positionInformation);
2076
2077     _positionInformation = newInfo;
2078     _hasValidPositionInformation = YES;
2079     if (_actionSheetAssistant)
2080         [_actionSheetAssistant updateSheetPosition];
2081     [self _invokeAndRemovePendingHandlersValidForCurrentPositionInformation];
2082 }
2083
2084 - (void)_willStartScrollingOrZooming
2085 {
2086     [_textSelectionAssistant willStartScrollingOverflow];
2087     _page->setIsScrollingOrZooming(true);
2088
2089 #if PLATFORM(WATCHOS)
2090     [_focusedFormControlView disengageFocusedFormControlNavigation];
2091 #endif
2092 }
2093
2094 - (void)scrollViewWillStartPanOrPinchGesture
2095 {
2096     _page->hideValidationMessage();
2097
2098     [_keyboardScrollingAnimator willStartInteractiveScroll];
2099
2100     _canSendTouchEventsAsynchronously = YES;
2101 }
2102
2103 - (void)_didEndScrollingOrZooming
2104 {
2105     if (!_needsDeferredEndScrollingSelectionUpdate) {
2106         [_textSelectionAssistant didEndScrollingOverflow];
2107     }
2108     _page->setIsScrollingOrZooming(false);
2109
2110 #if PLATFORM(WATCHOS)
2111     [_focusedFormControlView engageFocusedFormControlNavigation];
2112 #endif
2113 }
2114
2115 - (BOOL)requiresAccessoryView
2116 {
2117     if ([_formInputSession accessoryViewShouldNotShow])
2118         return NO;
2119
2120     if ([_formInputSession customInputAccessoryView])
2121         return YES;
2122
2123     if (_assistedNodeInformation.inputMode == InputMode::None)
2124         return NO;
2125
2126     switch (_assistedNodeInformation.elementType) {
2127     case InputType::None:
2128         return NO;
2129     case InputType::Text:
2130     case InputType::Password:
2131     case InputType::Search:
2132     case InputType::Email:
2133     case InputType::URL:
2134     case InputType::Phone:
2135     case InputType::Number:
2136     case InputType::NumberPad:
2137     case InputType::ContentEditable:
2138     case InputType::TextArea:
2139     case InputType::Select:
2140     case InputType::Date:
2141     case InputType::DateTime:
2142     case InputType::DateTimeLocal:
2143     case InputType::Month:
2144     case InputType::Week:
2145     case InputType::Time:
2146 #if ENABLE(INPUT_TYPE_COLOR)
2147     case InputType::Color:
2148 #endif
2149         return !currentUserInterfaceIdiomIsPad();
2150     }
2151 }
2152
2153 - (UITextInputAssistantItem *)inputAssistantItem
2154 {
2155     return [_webView inputAssistantItem];
2156 }
2157
2158 - (UITextInputAssistantItem *)inputAssistantItemForWebView
2159 {
2160     return [super inputAssistantItem];
2161 }
2162
2163 - (void)_ensureFormAccessoryView
2164 {
2165     if (_formAccessoryView)
2166         return;
2167
2168     _formAccessoryView = adoptNS([[UIWebFormAccessory alloc] initWithInputAssistantItem:self.inputAssistantItem]);
2169     [_formAccessoryView setDelegate:self];
2170 }
2171
2172 - (UIView *)inputAccessoryView
2173 {
2174     if (![self requiresAccessoryView])
2175         return nil;
2176
2177     return [_formInputSession customInputAccessoryView] ?: self.formAccessoryView;
2178 }
2179
2180 - (NSArray *)supportedPasteboardTypesForCurrentSelection
2181 {
2182     if (_page->editorState().selectionIsNone)
2183         return nil;
2184     
2185     static NSMutableArray *richTypes = nil;
2186     static NSMutableArray *plainTextTypes = nil;
2187     if (!plainTextTypes) {
2188         plainTextTypes = [[NSMutableArray alloc] init];
2189         [plainTextTypes addObject:(id)kUTTypeURL];
2190         [plainTextTypes addObjectsFromArray:UIPasteboardTypeListString];
2191
2192         richTypes = [[NSMutableArray alloc] init];
2193         [richTypes addObject:WebArchivePboardType];
2194         [richTypes addObjectsFromArray:UIPasteboardTypeListImage];
2195         [richTypes addObjectsFromArray:plainTextTypes];
2196     }
2197
2198     return (_page->editorState().isContentRichlyEditable) ? richTypes : plainTextTypes;
2199 }
2200
2201 #define FORWARD_ACTION_TO_WKWEBVIEW(_action) \
2202     - (void)_action:(id)sender \
2203     { \
2204         [_webView _action:sender]; \
2205     }
2206
2207 FOR_EACH_WKCONTENTVIEW_ACTION(FORWARD_ACTION_TO_WKWEBVIEW)
2208 FOR_EACH_PRIVATE_WKCONTENTVIEW_ACTION(FORWARD_ACTION_TO_WKWEBVIEW)
2209
2210 #undef FORWARD_ACTION_TO_WKWEBVIEW
2211
2212 - (void)_lookupForWebView:(id)sender
2213 {
2214     RetainPtr<WKContentView> view = self;
2215     _page->getSelectionContext([view](const String& selectedText, const String& textBefore, const String& textAfter, CallbackBase::Error error) {
2216         if (error != CallbackBase::Error::None)
2217             return;
2218         if (!selectedText)
2219             return;
2220
2221         auto& editorState = view->_page->editorState();
2222         auto& postLayoutData = editorState.postLayoutData();
2223         CGRect presentationRect;
2224         if (editorState.selectionIsRange && !postLayoutData.selectionRects.isEmpty())
2225             presentationRect = postLayoutData.selectionRects[0].rect();
2226         else
2227             presentationRect = postLayoutData.caretRectAtStart;
2228         
2229         String selectionContext = textBefore + selectedText + textAfter;
2230         NSRange selectedRangeInContext = NSMakeRange(textBefore.length(), selectedText.length());
2231
2232         if (auto textSelectionAssistant = view->_textSelectionAssistant)
2233             [textSelectionAssistant lookup:selectionContext withRange:selectedRangeInContext fromRect:presentationRect];
2234     });
2235 }
2236
2237 - (void)_shareForWebView:(id)sender
2238 {
2239     RetainPtr<WKContentView> view = self;
2240     _page->getSelectionOrContentsAsString([view](const String& string, CallbackBase::Error error) {
2241         if (error != CallbackBase::Error::None)
2242             return;
2243         if (!string)
2244             return;
2245
2246         CGRect presentationRect = view->_page->editorState().postLayoutData().selectionRects[0].rect();
2247
2248         if (view->_textSelectionAssistant)
2249             [view->_textSelectionAssistant showShareSheetFor:string fromRect:presentationRect];
2250     });
2251 }
2252
2253 - (void)_addShortcutForWebView:(id)sender
2254 {
2255     if (_textSelectionAssistant)
2256         [_textSelectionAssistant showTextServiceFor:[self selectedText] fromRect:_page->editorState().postLayoutData().selectionRects[0].rect()];
2257 }
2258
2259 - (NSString *)selectedText
2260 {
2261     return (NSString *)_page->editorState().postLayoutData().wordAtSelection;
2262 }
2263
2264 - (void)makeTextWritingDirectionNaturalForWebView:(id)sender
2265 {
2266     _page->executeEditCommand("makeTextWritingDirectionNatural"_s);
2267 }
2268
2269 - (BOOL)isReplaceAllowed
2270 {
2271     return _page->editorState().postLayoutData().isReplaceAllowed;
2272 }
2273
2274 - (void)replaceText:(NSString *)text withText:(NSString *)word
2275 {
2276     _page->replaceSelectedText(text, word);
2277 }
2278
2279 - (void)selectWordBackward
2280 {
2281     _page->selectWordBackward();
2282 }
2283
2284 - (void)_promptForReplaceForWebView:(id)sender
2285 {
2286     const auto& wordAtSelection = _page->editorState().postLayoutData().wordAtSelection;
2287     if (wordAtSelection.isEmpty())
2288         return;
2289
2290     [_textSelectionAssistant scheduleReplacementsForText:wordAtSelection];
2291 }
2292
2293 - (void)_transliterateChineseForWebView:(id)sender
2294 {
2295     [_textSelectionAssistant scheduleChineseTransliterationForText:_page->editorState().postLayoutData().wordAtSelection];
2296 }
2297
2298 - (void)replaceForWebView:(id)sender
2299 {
2300     [[UIKeyboardImpl sharedInstance] replaceText:sender];
2301 }
2302
2303 #define WEBCORE_COMMAND_FOR_WEBVIEW(command) \
2304     - (void)_ ## command ## ForWebView:(id)sender { _page->executeEditCommand(#command ## _s); } \
2305     - (void)command ## ForWebView:(id)sender { [self _ ## command ## ForWebView:sender]; }
2306 WEBCORE_COMMAND_FOR_WEBVIEW(insertOrderedList);
2307 WEBCORE_COMMAND_FOR_WEBVIEW(insertUnorderedList);
2308 WEBCORE_COMMAND_FOR_WEBVIEW(insertNestedOrderedList);
2309 WEBCORE_COMMAND_FOR_WEBVIEW(insertNestedUnorderedList);
2310 WEBCORE_COMMAND_FOR_WEBVIEW(indent);
2311 WEBCORE_COMMAND_FOR_WEBVIEW(outdent);
2312 WEBCORE_COMMAND_FOR_WEBVIEW(alignLeft);
2313 WEBCORE_COMMAND_FOR_WEBVIEW(alignRight);
2314 WEBCORE_COMMAND_FOR_WEBVIEW(alignCenter);
2315 WEBCORE_COMMAND_FOR_WEBVIEW(alignJustified);
2316 WEBCORE_COMMAND_FOR_WEBVIEW(pasteAndMatchStyle);
2317 #undef WEBCORE_COMMAND_FOR_WEBVIEW
2318
2319 - (void)_increaseListLevelForWebView:(id)sender
2320 {
2321     _page->increaseListLevel();
2322 }
2323
2324 - (void)_decreaseListLevelForWebView:(id)sender
2325 {
2326     _page->decreaseListLevel();
2327 }
2328
2329 - (void)_changeListTypeForWebView:(id)sender
2330 {
2331     _page->changeListType();
2332 }
2333
2334 - (void)_toggleStrikeThroughForWebView:(id)sender
2335 {
2336     _page->executeEditCommand("StrikeThrough"_s);
2337 }
2338
2339 - (void)increaseSizeForWebView:(id)sender
2340 {
2341     _page->executeEditCommand("FontSizeDelta"_s, "1"_s);
2342 }
2343
2344 - (void)decreaseSizeForWebView:(id)sender
2345 {
2346     _page->executeEditCommand("FontSizeDelta"_s, "-1"_s);
2347 }
2348
2349 - (void)_setFontForWebView:(UIFont *)font sender:(id)sender
2350 {
2351     WebCore::FontChanges changes;
2352     changes.setFontFamily(font.familyName);
2353     changes.setFontName(font.fontName);
2354     changes.setFontSize(font.pointSize);
2355     changes.setBold(font.traits & UIFontTraitBold);
2356     changes.setItalic(font.traits & UIFontTraitItalic);
2357     _page->changeFont(WTFMove(changes));
2358 }
2359
2360 - (void)_setFontSizeForWebView:(CGFloat)fontSize sender:(id)sender
2361 {
2362     WebCore::FontChanges changes;
2363     changes.setFontSize(fontSize);
2364     _page->changeFont(WTFMove(changes));
2365 }
2366
2367 - (void)_setTextColorForWebView:(UIColor *)color sender:(id)sender
2368 {
2369     _page->executeEditCommand("ForeColor"_s, WebCore::Color(color.CGColor).serialized());
2370 }
2371
2372 - (void)toggleStrikeThroughForWebView:(id)sender
2373 {
2374     [self _toggleStrikeThroughForWebView:sender];
2375 }
2376
2377 - (void)setFontForWebView:(UIFont *)font sender:(id)sender
2378 {
2379     [self _setFontForWebView:font sender:sender];
2380 }
2381
2382 - (void)setFontSizeForWebView:(CGFloat)fontSize sender:(id)sender
2383 {
2384     [self _setFontSizeForWebView:fontSize sender:sender];
2385 }
2386
2387 - (void)setTextColorForWebView:(UIColor *)color sender:(id)sender
2388 {
2389     [self _setTextColorForWebView:color sender:sender];
2390 }
2391
2392 - (NSDictionary *)textStylingAtPosition:(UITextPosition *)position inDirection:(UITextStorageDirection)direction
2393 {
2394     if (!position || !_page->editorState().isContentRichlyEditable)
2395         return nil;
2396
2397     NSMutableDictionary* result = [NSMutableDictionary dictionary];
2398
2399     auto typingAttributes = _page->editorState().postLayoutData().typingAttributes;
2400     CTFontSymbolicTraits symbolicTraits = 0;
2401     if (typingAttributes & AttributeBold)
2402         symbolicTraits |= kCTFontBoldTrait;
2403     if (typingAttributes & AttributeItalics)
2404         symbolicTraits |= kCTFontTraitItalic;
2405
2406     // We chose a random font family and size.
2407     // What matters are the traits but the caller expects a font object
2408     // in the dictionary for NSFontAttributeName.
2409     RetainPtr<CTFontDescriptorRef> fontDescriptor = adoptCF(CTFontDescriptorCreateWithNameAndSize(CFSTR("Helvetica"), 10));
2410     if (symbolicTraits)
2411         fontDescriptor = adoptCF(CTFontDescriptorCreateCopyWithSymbolicTraits(fontDescriptor.get(), symbolicTraits, symbolicTraits));
2412     
2413     RetainPtr<CTFontRef> font = adoptCF(CTFontCreateWithFontDescriptor(fontDescriptor.get(), 10, nullptr));
2414     if (font)
2415         [result setObject:(id)font.get() forKey:NSFontAttributeName];
2416     
2417     if (typingAttributes & AttributeUnderline)
2418         [result setObject:[NSNumber numberWithInt:NSUnderlineStyleSingle] forKey:NSUnderlineStyleAttributeName];
2419
2420     return result;
2421 }
2422
2423 - (UIColor *)insertionPointColor
2424 {
2425     if (!_webView.configuration._textInteractionGesturesEnabled)
2426         return [UIColor clearColor];
2427
2428     if (!_page->editorState().isMissingPostLayoutData) {
2429         WebCore::Color caretColor = _page->editorState().postLayoutData().caretColor;
2430         if (caretColor.isValid())
2431             return [UIColor colorWithCGColor:cachedCGColor(caretColor)];
2432     }
2433     return [UIColor insertionPointColor];
2434 }
2435
2436 - (BOOL)canPerformAction:(SEL)action withSender:(id)sender
2437 {
2438     return [_webView canPerformAction:action withSender:sender];
2439 }
2440
2441 - (BOOL)canPerformActionForWebView:(SEL)action withSender:(id)sender
2442 {        
2443     auto editorState = _page->editorState();
2444     if (action == @selector(_showTextStyleOptions:))
2445         return editorState.isContentRichlyEditable && editorState.selectionIsRange && !_showingTextStyleOptions;
2446     if (_showingTextStyleOptions)
2447         return (action == @selector(toggleBoldface:) || action == @selector(toggleItalics:) || action == @selector(toggleUnderline:));
2448     // FIXME: Some of the following checks should be removed once internal clients move to the underscore-prefixed versions.
2449     if (action == @selector(toggleBoldface:) || action == @selector(toggleItalics:) || action == @selector(toggleUnderline:) || action == @selector(_toggleStrikeThrough:)
2450         || action == @selector(_alignLeft:) || action == @selector(_alignRight:) || action == @selector(_alignCenter:) || action == @selector(_alignJustified:)
2451         || action == @selector(_setTextColor:sender:) || action == @selector(_setFont:sender:) || action == @selector(_setFontSize:sender:)
2452         || action == @selector(_insertOrderedList:) || action == @selector(_insertUnorderedList:) || action == @selector(_insertNestedOrderedList:) || action == @selector(_insertNestedUnorderedList:)
2453         || action == @selector(_increaseListLevel:) || action == @selector(_decreaseListLevel:) || action == @selector(_changeListType:) || action == @selector(_indent:) || action == @selector(_outdent:)
2454         || action == @selector(increaseSize:) || action == @selector(decreaseSize:)
2455         || action == @selector(toggleStrikeThrough:) || action == @selector(insertOrderedList:) || action == @selector(insertUnorderedList:) || action == @selector(indent:) || action == @selector(outdent:)
2456         || action == @selector(alignLeft:) || action == @selector(alignRight:) || action == @selector(alignCenter:) || action == @selector(alignJustified:)
2457         || action == @selector(setTextColor:sender:) || action == @selector(setFont:sender:) || action == @selector(setFontSize:sender:)
2458         || action == @selector(makeTextWritingDirectionNatural:)) {
2459         // FIXME: This should be more nuanced in the future, rather than returning YES for all richly editable areas. For instance, outdent: should be disabled when the selection is already
2460         // at the outermost indentation level.
2461         return editorState.isContentRichlyEditable;
2462     }
2463     if (action == @selector(cut:))
2464         return !editorState.isInPasswordField && editorState.isContentEditable && editorState.selectionIsRange;
2465     
2466     if (action == @selector(paste:) || action == @selector(_pasteAsQuotation:) || action == @selector(_pasteAndMatchStyle:) || action == @selector(pasteAndMatchStyle:)) {
2467         if (editorState.selectionIsNone || !editorState.isContentEditable)
2468             return NO;
2469         UIPasteboard *pasteboard = [UIPasteboard generalPasteboard];
2470         NSArray *types = [self supportedPasteboardTypesForCurrentSelection];
2471         NSIndexSet *indices = [NSIndexSet indexSetWithIndexesInRange:NSMakeRange(0, [pasteboard numberOfItems])];
2472         if ([pasteboard containsPasteboardTypes:types inItemSet:indices])
2473             return YES;
2474
2475         auto focusedDocumentOrigin = editorState.originIdentifierForPasteboard;
2476         if (focusedDocumentOrigin.isEmpty())
2477             return NO;
2478
2479         NSArray *allCustomPasteboardData = [pasteboard dataForPasteboardType:@(PasteboardCustomData::cocoaType()) inItemSet:indices];
2480         for (NSData *data in allCustomPasteboardData) {
2481             auto buffer = SharedBuffer::create(data);
2482             if (PasteboardCustomData::fromSharedBuffer(buffer.get()).origin == focusedDocumentOrigin)
2483                 return YES;
2484         }
2485         return NO;
2486     }
2487
2488     if (action == @selector(copy:)) {
2489         if (editorState.isInPasswordField)
2490             return NO;
2491         return editorState.selectionIsRange;
2492     }
2493
2494     if (action == @selector(_define:)) {
2495         if (editorState.isInPasswordField || !editorState.selectionIsRange)
2496             return NO;
2497
2498         NSUInteger textLength = editorState.postLayoutData().selectedTextLength;
2499         // FIXME: We should be calling UIReferenceLibraryViewController to check if the length is
2500         // acceptable, but the interface takes a string.
2501         // <rdar://problem/15254406>
2502         if (!textLength || textLength > 200)
2503             return NO;
2504
2505 #if !PLATFORM(IOSMAC)
2506         if ([[getMCProfileConnectionClass() sharedConnection] effectiveBoolValueForSetting:MCFeatureDefinitionLookupAllowed] == MCRestrictedBoolExplicitNo)
2507             return NO;
2508 #endif
2509             
2510         return YES;
2511     }
2512
2513     if (action == @selector(_lookup:)) {
2514         if (editorState.isInPasswordField)
2515             return NO;
2516
2517 #if !PLATFORM(IOSMAC)
2518         if ([[getMCProfileConnectionClass() sharedConnection] effectiveBoolValueForSetting:MCFeatureDefinitionLookupAllowed] == MCRestrictedBoolExplicitNo)
2519             return NO;
2520 #endif
2521
2522         return editorState.selectionIsRange;
2523     }
2524
2525     if (action == @selector(_share:)) {
2526         if (editorState.isInPasswordField || !editorState.selectionIsRange)
2527             return NO;
2528
2529         return editorState.postLayoutData().selectedTextLength > 0;
2530     }
2531
2532     if (action == @selector(_addShortcut:)) {
2533         if (editorState.isInPasswordField || !editorState.selectionIsRange)
2534             return NO;
2535
2536         NSString *selectedText = [self selectedText];
2537         if (![selectedText length])
2538             return NO;
2539
2540         if (!UIKeyboardEnabledInputModesAllowOneToManyShortcuts())
2541             return NO;
2542         if (![selectedText _containsCJScripts])
2543             return NO;
2544         return YES;
2545     }
2546
2547     if (action == @selector(_promptForReplace:)) {
2548         if (!editorState.selectionIsRange || !editorState.postLayoutData().isReplaceAllowed || ![[UIKeyboardImpl activeInstance] autocorrectSpellingEnabled])
2549             return NO;
2550         if ([[self selectedText] _containsCJScriptsOnly])
2551             return NO;
2552         return YES;
2553     }
2554
2555     if (action == @selector(_transliterateChinese:)) {
2556         if (!editorState.selectionIsRange || !editorState.postLayoutData().isReplaceAllowed || ![[UIKeyboardImpl activeInstance] autocorrectSpellingEnabled])
2557             return NO;
2558         return UIKeyboardEnabledInputModesAllowChineseTransliterationForText([self selectedText]);
2559     }
2560
2561     if (action == @selector(select:)) {
2562         // Disable select in password fields so that you can't see word boundaries.
2563         return !editorState.isInPasswordField && [self hasContent] && !editorState.selectionIsNone && !editorState.selectionIsRange;
2564     }
2565
2566     if (action == @selector(selectAll:)) {
2567         if (!editorState.selectionIsNone && !editorState.selectionIsRange)
2568             return YES;
2569         return NO;
2570     }
2571
2572     if (action == @selector(replace:))
2573         return editorState.isContentEditable && !editorState.isInPasswordField;
2574
2575     return [super canPerformAction:action withSender:sender];
2576 }
2577
2578 - (id)targetForAction:(SEL)action withSender:(id)sender
2579 {
2580     return [_webView targetForAction:action withSender:sender];
2581 }
2582
2583 - (id)targetForActionForWebView:(SEL)action withSender:(id)sender
2584 {
2585     return [super targetForAction:action withSender:sender];
2586 }
2587
2588 - (void)_resetShowingTextStyle:(NSNotification *)notification
2589 {
2590     _showingTextStyleOptions = NO;
2591     [_textSelectionAssistant hideTextStyleOptions];
2592 }
2593
2594 - (void)copyForWebView:(id)sender
2595 {
2596     _page->executeEditCommand("copy"_s);
2597 }
2598
2599 - (void)cutForWebView:(id)sender
2600 {
2601     _page->executeEditCommand("cut"_s);
2602 }
2603
2604 - (void)pasteForWebView:(id)sender
2605 {
2606     _page->executeEditCommand("paste"_s);
2607 }
2608
2609 - (void)_pasteAsQuotationForWebView:(id)sender
2610 {
2611     _page->executeEditCommand("PasteAsQuotation"_s);
2612 }
2613
2614 - (void)selectForWebView:(id)sender
2615 {
2616     [_textSelectionAssistant selectWord];
2617     // We cannot use selectWord command, because we want to be able to select the word even when it is the last in the paragraph.
2618     _page->extendSelection(WordGranularity);
2619 }
2620
2621 - (void)selectAllForWebView:(id)sender
2622 {
2623     [_textSelectionAssistant selectAll:sender];
2624     _page->executeEditCommand("selectAll"_s);
2625 }
2626
2627 - (void)toggleBoldfaceForWebView:(id)sender
2628 {
2629     if (!_page->editorState().isContentRichlyEditable)
2630         return;
2631
2632     [self executeEditCommandWithCallback:@"toggleBold"];
2633 }
2634
2635 - (void)toggleItalicsForWebView:(id)sender
2636 {
2637     if (!_page->editorState().isContentRichlyEditable)
2638         return;
2639
2640     [self executeEditCommandWithCallback:@"toggleItalic"];
2641 }
2642
2643 - (void)toggleUnderlineForWebView:(id)sender
2644 {
2645     if (!_page->editorState().isContentRichlyEditable)
2646         return;
2647
2648     [self executeEditCommandWithCallback:@"toggleUnderline"];
2649 }
2650
2651 - (void)_showTextStyleOptionsForWebView:(id)sender
2652 {
2653     _showingTextStyleOptions = YES;
2654     [_textSelectionAssistant showTextStyleOptions];
2655 }
2656
2657 - (void)_showDictionary:(NSString *)text
2658 {
2659     CGRect presentationRect = _page->editorState().postLayoutData().selectionRects[0].rect();
2660     if (_textSelectionAssistant)
2661         [_textSelectionAssistant showDictionaryFor:text fromRect:presentationRect];
2662 }
2663
2664 - (void)_defineForWebView:(id)sender
2665 {
2666 #if !PLATFORM(IOSMAC)
2667     if ([[getMCProfileConnectionClass() sharedConnection] effectiveBoolValueForSetting:MCFeatureDefinitionLookupAllowed] == MCRestrictedBoolExplicitNo)
2668         return;
2669 #endif
2670
2671     RetainPtr<WKContentView> view = self;
2672     _page->getSelectionOrContentsAsString([view](const String& string, WebKit::CallbackBase::Error error) {
2673         if (error != WebKit::CallbackBase::Error::None)
2674             return;
2675         if (!string)
2676             return;
2677
2678         [view _showDictionary:string];
2679     });
2680 }
2681
2682 - (void)accessibilityRetrieveSpeakSelectionContent
2683 {
2684     RetainPtr<WKContentView> view = self;
2685     RetainPtr<WKWebView> webView = _webView;
2686     _page->getSelectionOrContentsAsString([view, webView](const String& string, WebKit::CallbackBase::Error error) {
2687         if (error != WebKit::CallbackBase::Error::None)
2688             return;
2689         [webView _accessibilityDidGetSpeakSelectionContent:string];
2690         if ([view respondsToSelector:@selector(accessibilitySpeakSelectionSetContent:)])
2691             [view accessibilitySpeakSelectionSetContent:string];
2692     });
2693 }
2694
2695 - (void)_accessibilityRetrieveRectsEnclosingSelectionOffset:(NSInteger)offset withGranularity:(UITextGranularity)granularity
2696 {
2697     RetainPtr<WKContentView> view = self;
2698     _page->requestRectsForGranularityWithSelectionOffset(toWKTextGranularity(granularity), offset , [view, offset, granularity](const Vector<WebCore::SelectionRect>& selectionRects, CallbackBase::Error error) {
2699         if (error != WebKit::CallbackBase::Error::None)
2700             return;
2701         if ([view respondsToSelector:@selector(_accessibilityDidGetSelectionRects:withGranularity:atOffset:)])
2702             [view _accessibilityDidGetSelectionRects:[view webSelectionRectsForSelectionRects:selectionRects] withGranularity:granularity atOffset:offset];
2703     });
2704 }
2705
2706 - (void)_accessibilityRetrieveRectsAtSelectionOffset:(NSInteger)offset withText:(NSString *)text
2707 {
2708     [self _accessibilityRetrieveRectsAtSelectionOffset:offset withText:text completionHandler:nil];
2709 }
2710
2711 - (void)_accessibilityRetrieveRectsAtSelectionOffset:(NSInteger)offset withText:(NSString *)text completionHandler:(void (^)(const Vector<SelectionRect>& rects))completionHandler
2712 {
2713     RetainPtr<WKContentView> view = self;
2714     _page->requestRectsAtSelectionOffsetWithText(offset, text, [view, offset, capturedCompletionHandler = makeBlockPtr(completionHandler)](const Vector<SelectionRect>& selectionRects, CallbackBase::Error error) {
2715         if (capturedCompletionHandler)
2716             capturedCompletionHandler(selectionRects);
2717
2718         if (error != WebKit::CallbackBase::Error::None)
2719             return;
2720         if ([view respondsToSelector:@selector(_accessibilityDidGetSelectionRects:withGranularity:atOffset:)])
2721             [view _accessibilityDidGetSelectionRects:[view webSelectionRectsForSelectionRects:selectionRects] withGranularity:UITextGranularityWord atOffset:offset];
2722     });
2723 }
2724
2725 - (void)_accessibilityStoreSelection
2726 {
2727     _page->storeSelectionForAccessibility(true);
2728 }
2729
2730 - (void)_accessibilityClearSelection
2731 {
2732     _page->storeSelectionForAccessibility(false);
2733 }
2734
2735 // UIWKInteractionViewProtocol
2736
2737 static inline GestureType toGestureType(UIWKGestureType gestureType)
2738 {
2739     switch (gestureType) {
2740     case UIWKGestureLoupe:
2741         return GestureType::Loupe;
2742     case UIWKGestureOneFingerTap:
2743         return GestureType::OneFingerTap;
2744     case UIWKGestureTapAndAHalf:
2745         return GestureType::TapAndAHalf;
2746     case UIWKGestureDoubleTap:
2747         return GestureType::DoubleTap;
2748     case UIWKGestureTapAndHalf:
2749         return GestureType::TapAndHalf;
2750     case UIWKGestureDoubleTapInUneditable:
2751         return GestureType::DoubleTapInUneditable;
2752     case UIWKGestureOneFingerTapInUneditable:
2753         return GestureType::OneFingerTapInUneditable;
2754     case UIWKGestureOneFingerTapSelectsAll:
2755         return GestureType::OneFingerTapSelectsAll;
2756     case UIWKGestureOneFingerDoubleTap:
2757         return GestureType::OneFingerDoubleTap;
2758     case UIWKGestureOneFingerTripleTap:
2759         return GestureType::OneFingerTripleTap;
2760     case UIWKGestureTwoFingerSingleTap:
2761         return GestureType::TwoFingerSingleTap;
2762     case UIWKGestureTwoFingerRangedSelectGesture:
2763         return GestureType::TwoFingerRangedSelectGesture;
2764     case UIWKGestureTapOnLinkWithGesture:
2765         return GestureType::TapOnLinkWithGesture;
2766     case UIWKGestureMakeWebSelection:
2767         return GestureType::MakeWebSelection;
2768     case UIWKGesturePhraseBoundary:
2769         return GestureType::PhraseBoundary;
2770     }
2771     ASSERT_NOT_REACHED();
2772     return GestureType::Loupe;
2773 }
2774
2775 static inline UIWKGestureType toUIWKGestureType(GestureType gestureType)
2776 {
2777     switch (gestureType) {
2778     case GestureType::Loupe:
2779         return UIWKGestureLoupe;
2780     case GestureType::OneFingerTap:
2781         return UIWKGestureOneFingerTap;
2782     case GestureType::TapAndAHalf:
2783         return UIWKGestureTapAndAHalf;
2784     case GestureType::DoubleTap:
2785         return UIWKGestureDoubleTap;
2786     case GestureType::TapAndHalf:
2787         return UIWKGestureTapAndHalf;
2788     case GestureType::DoubleTapInUneditable:
2789         return UIWKGestureDoubleTapInUneditable;
2790     case GestureType::OneFingerTapInUneditable:
2791         return UIWKGestureOneFingerTapInUneditable;
2792     case GestureType::OneFingerTapSelectsAll:
2793         return UIWKGestureOneFingerTapSelectsAll;
2794     case GestureType::OneFingerDoubleTap:
2795         return UIWKGestureOneFingerDoubleTap;
2796     case GestureType::OneFingerTripleTap:
2797         return UIWKGestureOneFingerTripleTap;
2798     case GestureType::TwoFingerSingleTap:
2799         return UIWKGestureTwoFingerSingleTap;
2800     case GestureType::TwoFingerRangedSelectGesture:
2801         return UIWKGestureTwoFingerRangedSelectGesture;
2802     case GestureType::TapOnLinkWithGesture:
2803         return UIWKGestureTapOnLinkWithGesture;
2804     case GestureType::MakeWebSelection:
2805         return UIWKGestureMakeWebSelection;
2806     case GestureType::PhraseBoundary:
2807         return UIWKGesturePhraseBoundary;
2808     }
2809 }
2810
2811 static inline SelectionTouch toSelectionTouch(UIWKSelectionTouch touch)
2812 {
2813     switch (touch) {
2814     case UIWKSelectionTouchStarted:
2815         return SelectionTouch::Started;
2816     case UIWKSelectionTouchMoved:
2817         return SelectionTouch::Moved;
2818     case UIWKSelectionTouchEnded:
2819         return SelectionTouch::Ended;
2820     case UIWKSelectionTouchEndedMovingForward:
2821         return SelectionTouch::EndedMovingForward;
2822     case UIWKSelectionTouchEndedMovingBackward:
2823         return SelectionTouch::EndedMovingBackward;
2824     case UIWKSelectionTouchEndedNotMoving:
2825         return SelectionTouch::EndedNotMoving;
2826     }
2827     ASSERT_NOT_REACHED();
2828     return SelectionTouch::Ended;
2829 }
2830
2831 static inline UIWKSelectionTouch toUIWKSelectionTouch(SelectionTouch touch)
2832 {
2833     switch (touch) {
2834     case SelectionTouch::Started:
2835         return UIWKSelectionTouchStarted;
2836     case SelectionTouch::Moved:
2837         return UIWKSelectionTouchMoved;
2838     case SelectionTouch::Ended:
2839         return UIWKSelectionTouchEnded;
2840     case SelectionTouch::EndedMovingForward:
2841         return UIWKSelectionTouchEndedMovingForward;
2842     case SelectionTouch::EndedMovingBackward:
2843         return UIWKSelectionTouchEndedMovingBackward;
2844     case SelectionTouch::EndedNotMoving:
2845         return UIWKSelectionTouchEndedNotMoving;
2846     }
2847 }
2848
2849 static inline GestureRecognizerState toGestureRecognizerState(UIGestureRecognizerState state)
2850 {
2851     switch (state) {
2852     case UIGestureRecognizerStatePossible:
2853         return GestureRecognizerState::Possible;
2854     case UIGestureRecognizerStateBegan:
2855         return GestureRecognizerState::Began;
2856     case UIGestureRecognizerStateChanged:
2857         return GestureRecognizerState::Changed;
2858     case UIGestureRecognizerStateCancelled:
2859         return GestureRecognizerState::Cancelled;
2860     case UIGestureRecognizerStateEnded:
2861         return GestureRecognizerState::Ended;
2862     case UIGestureRecognizerStateFailed:
2863         return GestureRecognizerState::Failed;
2864     }
2865 }
2866
2867 static inline UIGestureRecognizerState toUIGestureRecognizerState(GestureRecognizerState state)
2868 {
2869     switch (state) {
2870     case GestureRecognizerState::Possible:
2871         return UIGestureRecognizerStatePossible;
2872     case GestureRecognizerState::Began:
2873         return UIGestureRecognizerStateBegan;
2874     case GestureRecognizerState::Changed:
2875         return UIGestureRecognizerStateChanged;
2876     case GestureRecognizerState::Cancelled:
2877         return UIGestureRecognizerStateCancelled;
2878     case GestureRecognizerState::Ended:
2879         return UIGestureRecognizerStateEnded;
2880     case GestureRecognizerState::Failed:
2881         return UIGestureRecognizerStateFailed;
2882     }
2883 }
2884
2885 static inline UIWKSelectionFlags toUIWKSelectionFlags(SelectionFlags flags)
2886 {
2887     NSInteger uiFlags = UIWKNone;
2888     if (flags & WordIsNearTap)
2889         uiFlags |= UIWKWordIsNearTap;
2890     if (flags & PhraseBoundaryChanged)
2891         uiFlags |= UIWKPhraseBoundaryChanged;
2892
2893     return static_cast<UIWKSelectionFlags>(uiFlags);
2894 }
2895
2896 static inline WebCore::TextGranularity toWKTextGranularity(UITextGranularity granularity)
2897 {
2898     switch (granularity) {
2899     case UITextGranularityCharacter:
2900         return CharacterGranularity;
2901     case UITextGranularityWord:
2902         return WordGranularity;
2903     case UITextGranularitySentence:
2904         return SentenceGranularity;
2905     case UITextGranularityParagraph:
2906         return ParagraphGranularity;
2907     case UITextGranularityLine:
2908         return LineGranularity;
2909     case UITextGranularityDocument:
2910         return DocumentGranularity;
2911     }
2912 }
2913
2914 static inline WebCore::SelectionDirection toWKSelectionDirection(UITextDirection direction)
2915 {
2916     switch (direction) {
2917     case UITextLayoutDirectionDown:
2918     case UITextLayoutDirectionRight:
2919         return DirectionRight;
2920     case UITextLayoutDirectionUp:
2921     case UITextLayoutDirectionLeft:
2922         return DirectionLeft;
2923     default:
2924         // UITextDirection is not an enum, but we only want to accept values from UITextLayoutDirection.
2925         ASSERT_NOT_REACHED();
2926         return DirectionRight;
2927     }
2928 }
2929
2930 static void selectionChangedWithGesture(WKContentView *view, const WebCore::IntPoint& point, uint32_t gestureType, uint32_t gestureState, uint32_t flags, WebKit::CallbackBase::Error error)
2931 {
2932     if (error != WebKit::CallbackBase::Error::None) {
2933         ASSERT_NOT_REACHED();
2934         return;
2935     }
2936     [(UIWKTextInteractionAssistant *)[view interactionAssistant] selectionChangedWithGestureAt:(CGPoint)point withGesture:toUIWKGestureType((GestureType)gestureType) withState:toUIGestureRecognizerState(static_cast<GestureRecognizerState>(gestureState)) withFlags:(toUIWKSelectionFlags((SelectionFlags)flags))];
2937 }
2938
2939 static void selectionChangedWithTouch(WKContentView *view, const WebCore::IntPoint& point, uint32_t touch, uint32_t flags, WebKit::CallbackBase::Error error)
2940 {
2941     if (error != WebKit::CallbackBase::Error::None) {
2942         ASSERT_NOT_REACHED();
2943         return;
2944     }
2945     [(UIWKTextInteractionAssistant *)[view interactionAssistant] selectionChangedWithTouchAt:(CGPoint)point withSelectionTouch:toUIWKSelectionTouch((SelectionTouch)touch) withFlags:static_cast<UIWKSelectionFlags>(flags)];
2946 }
2947
2948 - (BOOL)_isInteractingWithAssistedNode
2949 {
2950     return hasAssistedNode(_assistedNodeInformation);
2951 }
2952
2953 - (void)changeSelectionWithGestureAt:(CGPoint)point withGesture:(UIWKGestureType)gestureType withState:(UIGestureRecognizerState)state
2954 {
2955     [self changeSelectionWithGestureAt:point withGesture:gestureType withState:state withFlags:UIWKNone];
2956 }
2957
2958 - (void)changeSelectionWithGestureAt:(CGPoint)point withGesture:(UIWKGestureType)gestureType withState:(UIGestureRecognizerState)state withFlags:(UIWKSelectionFlags)flags
2959 {
2960     _usingGestureForSelection = YES;
2961     _page->selectWithGesture(WebCore::IntPoint(point), CharacterGranularity, static_cast<uint32_t>(toGestureType(gestureType)), static_cast<uint32_t>(toGestureRecognizerState(state)), [self _isInteractingWithAssistedNode], [self, state, flags](const WebCore::IntPoint& point, uint32_t gestureType, uint32_t gestureState, uint32_t innerFlags, WebKit::CallbackBase::Error error) {
2962         selectionChangedWithGesture(self, point, gestureType, gestureState, flags | innerFlags, error);
2963         if (state == UIGestureRecognizerStateEnded || state == UIGestureRecognizerStateCancelled)
2964             _usingGestureForSelection = NO;
2965     });
2966 }
2967
2968 - (void)changeSelectionWithTouchAt:(CGPoint)point withSelectionTouch:(UIWKSelectionTouch)touch baseIsStart:(BOOL)baseIsStart withFlags:(UIWKSelectionFlags)flags
2969 {
2970     _usingGestureForSelection = YES;
2971     _page->updateSelectionWithTouches(WebCore::IntPoint(point), static_cast<uint32_t>(toSelectionTouch(touch)), baseIsStart, [self, flags](const WebCore::IntPoint& point, uint32_t touch, uint32_t innerFlags, WebKit::CallbackBase::Error error) {
2972         selectionChangedWithTouch(self, point, touch, flags | innerFlags, error);
2973         if (touch != UIWKSelectionTouchStarted && touch != UIWKSelectionTouchMoved)
2974             _usingGestureForSelection = NO;
2975     });
2976 }
2977
2978 - (void)changeSelectionWithTouchesFrom:(CGPoint)from to:(CGPoint)to withGesture:(UIWKGestureType)gestureType withState:(UIGestureRecognizerState)gestureState
2979 {
2980     _usingGestureForSelection = YES;
2981     _page->selectWithTwoTouches(WebCore::IntPoint(from), WebCore::IntPoint(to), static_cast<uint32_t>(toGestureType(gestureType)), static_cast<uint32_t>(toGestureRecognizerState(gestureState)), [self](const WebCore::IntPoint& point, uint32_t gestureType, uint32_t gestureState, uint32_t flags, WebKit::CallbackBase::Error error) {
2982         selectionChangedWithGesture(self, point, gestureType, gestureState, flags, error);
2983         if (gestureState == UIGestureRecognizerStateEnded || gestureState == UIGestureRecognizerStateCancelled)
2984             _usingGestureForSelection = NO;
2985     });
2986 }
2987
2988 - (void)moveByOffset:(NSInteger)offset
2989 {
2990     if (!offset)
2991         return;
2992     
2993     [self beginSelectionChange];
2994     RetainPtr<WKContentView> view = self;
2995     _page->moveSelectionByOffset(offset, [view](WebKit::CallbackBase::Error) {
2996         [view endSelectionChange];
2997     });
2998 }
2999
3000 - (const WKAutoCorrectionData&)autocorrectionData
3001 {
3002     return _autocorrectionData;
3003 }
3004
3005 // The completion handler can pass nil if input does not match the actual text preceding the insertion point.
3006 - (void)requestAutocorrectionRectsForString:(NSString *)input withCompletionHandler:(void (^)(UIWKAutocorrectionRects *rectsForInput))completionHandler
3007 {
3008     if (!input || ![input length]) {
3009         completionHandler(nil);
3010         return;
3011     }
3012
3013     RetainPtr<WKContentView> view = self;
3014     _autocorrectionData.autocorrectionHandler = [completionHandler copy];
3015     _page->requestAutocorrectionData(input, [view](const Vector<FloatRect>& rects, const String& fontName, double fontSize, uint64_t traits, WebKit::CallbackBase::Error) {
3016         CGRect firstRect = CGRectZero;
3017         CGRect lastRect = CGRectZero;
3018         if (rects.size()) {
3019             firstRect = rects[0];
3020             lastRect = rects[rects.size() - 1];
3021         }
3022         
3023         view->_autocorrectionData.fontName = fontName;
3024         view->_autocorrectionData.fontSize = fontSize;
3025         view->_autocorrectionData.fontTraits = traits;
3026         view->_autocorrectionData.textFirstRect = firstRect;
3027         view->_autocorrectionData.textLastRect = lastRect;
3028
3029         view->_autocorrectionData.autocorrectionHandler(rects.size() ? [WKAutocorrectionRects autocorrectionRectsWithRects:firstRect lastRect:lastRect] : nil);
3030         [view->_autocorrectionData.autocorrectionHandler release];
3031         view->_autocorrectionData.autocorrectionHandler = nil;
3032     });
3033 }
3034
3035 - (void)selectPositionAtPoint:(CGPoint)point completionHandler:(void (^)(void))completionHandler
3036 {
3037     _usingGestureForSelection = YES;
3038     UIWKSelectionCompletionHandler selectionHandler = [completionHandler copy];
3039     RetainPtr<WKContentView> view = self;
3040     
3041     _page->selectPositionAtPoint(WebCore::IntPoint(point), [self _isInteractingWithAssistedNode], [view, selectionHandler](WebKit::CallbackBase::Error error) {
3042         selectionHandler();
3043         view->_usingGestureForSelection = NO;
3044         [selectionHandler release];
3045     });
3046 }
3047
3048 - (void)selectPositionAtBoundary:(UITextGranularity)granularity inDirection:(UITextDirection)direction fromPoint:(CGPoint)point completionHandler:(void (^)(void))completionHandler
3049 {
3050     _usingGestureForSelection = YES;
3051     UIWKSelectionCompletionHandler selectionHandler = [completionHandler copy];
3052     RetainPtr<WKContentView> view = self;
3053     
3054     _page->selectPositionAtBoundaryWithDirection(WebCore::IntPoint(point), toWKTextGranularity(granularity), toWKSelectionDirection(direction), [self _isInteractingWithAssistedNode], [view, selectionHandler](WebKit::CallbackBase::Error error) {
3055         selectionHandler();
3056         view->_usingGestureForSelection = NO;
3057         [selectionHandler release];
3058     });
3059 }
3060
3061 - (void)moveSelectionAtBoundary:(UITextGranularity)granularity inDirection:(UITextDirection)direction completionHandler:(void (^)(void))completionHandler
3062 {
3063     _usingGestureForSelection = YES;
3064     UIWKSelectionCompletionHandler selectionHandler = [completionHandler copy];
3065     RetainPtr<WKContentView> view = self;
3066     
3067     _page->moveSelectionAtBoundaryWithDirection(toWKTextGranularity(granularity), toWKSelectionDirection(direction), [view, selectionHandler](WebKit::CallbackBase::Error error) {
3068         selectionHandler();
3069         view->_usingGestureForSelection = NO;
3070         [selectionHandler release];
3071     });
3072 }
3073
3074 - (void)selectTextWithGranularity:(UITextGranularity)granularity atPoint:(CGPoint)point completionHandler:(void (^)(void))completionHandler
3075 {
3076     _usingGestureForSelection = YES;
3077     UIWKSelectionCompletionHandler selectionHandler = [completionHandler copy];
3078     RetainPtr<WKContentView> view = self;
3079
3080     _page->selectTextWithGranularityAtPoint(WebCore::IntPoint(point), toWKTextGranularity(granularity), [self _isInteractingWithAssistedNode], [view, selectionHandler](WebKit::CallbackBase::Error error) {
3081         selectionHandler();
3082         view->_usingGestureForSelection = NO;
3083         [selectionHandler release];
3084     });
3085 }
3086
3087 - (void)beginSelectionInDirection:(UITextDirection)direction completionHandler:(void (^)(BOOL endIsMoving))completionHandler
3088 {
3089     UIWKSelectionWithDirectionCompletionHandler selectionHandler = [completionHandler copy];
3090
3091     _page->beginSelectionInDirection(toWKSelectionDirection(direction), [selectionHandler](bool endIsMoving, WebKit::CallbackBase::Error error) {
3092         selectionHandler(endIsMoving);
3093         [selectionHandler release];
3094     });
3095 }
3096
3097 - (void)updateSelectionWithExtentPoint:(CGPoint)point completionHandler:(void (^)(BOOL endIsMoving))completionHandler
3098 {
3099     UIWKSelectionWithDirectionCompletionHandler selectionHandler = [completionHandler copy];
3100     
3101     _page->updateSelectionWithExtentPoint(WebCore::IntPoint(point), [self _isInteractingWithAssistedNode], [selectionHandler](bool endIsMoving, WebKit::CallbackBase::Error error) {
3102         selectionHandler(endIsMoving);
3103         [selectionHandler release];
3104     });
3105 }
3106
3107 - (void)updateSelectionWithExtentPoint:(CGPoint)point withBoundary:(UITextGranularity)granularity completionHandler:(void (^)(BOOL selectionEndIsMoving))completionHandler
3108 {
3109     UIWKSelectionWithDirectionCompletionHandler selectionHandler = [completionHandler copy];
3110     
3111     _page->updateSelectionWithExtentPointAndBoundary(WebCore::IntPoint(point), toWKTextGranularity(granularity), [self _isInteractingWithAssistedNode], [selectionHandler](bool endIsMoving, WebKit::CallbackBase::Error error) {
3112         selectionHandler(endIsMoving);
3113         [selectionHandler release];
3114     });
3115 }
3116
3117 - (UTF32Char)_characterBeforeCaretSelection
3118 {
3119     return _page->editorState().postLayoutData().characterBeforeSelection;
3120 }
3121
3122 - (UTF32Char)_characterInRelationToCaretSelection:(int)amount
3123 {
3124     switch (amount) {
3125     case 0:
3126         return _page->editorState().postLayoutData().characterAfterSelection;
3127     case -1:
3128         return _page->editorState().postLayoutData().characterBeforeSelection;
3129     case -2:
3130         return _page->editorState().postLayoutData().twoCharacterBeforeSelection;
3131     default:
3132         return 0;
3133     }
3134 }
3135
3136 - (BOOL)_selectionAtDocumentStart
3137 {
3138     return !_page->editorState().postLayoutData().characterBeforeSelection;
3139 }
3140
3141 - (CGRect)textFirstRect
3142 {
3143     return (_page->editorState().hasComposition) ? _page->editorState().firstMarkedRect : _autocorrectionData.textFirstRect;
3144 }
3145
3146 - (CGRect)textLastRect
3147 {
3148     return (_page->editorState().hasComposition) ? _page->editorState().lastMarkedRect : _autocorrectionData.textLastRect;
3149 }
3150
3151 - (void)replaceDictatedText:(NSString*)oldText withText:(NSString *)newText
3152 {
3153     _page->replaceDictatedText(oldText, newText);
3154 }
3155
3156 - (void)requestDictationContext:(void (^)(NSString *selectedText, NSString *beforeText, NSString *afterText))completionHandler
3157 {
3158     UIWKDictationContextHandler dictationHandler = [completionHandler copy];
3159
3160     _page->requestDictationContext([dictationHandler](const String& selectedText, const String& beforeText, const String& afterText, WebKit::CallbackBase::Error) {
3161         dictationHandler(selectedText, beforeText, afterText);
3162         [dictationHandler release];
3163     });
3164 }
3165
3166 // The completion handler should pass the rect of the correction text after replacing the input text, or nil if the replacement could not be performed.
3167 - (void)applyAutocorrection:(NSString *)correction toString:(NSString *)input withCompletionHandler:(void (^)(UIWKAutocorrectionRects *rectsForCorrection))completionHandler
3168 {
3169     // FIXME: Remove the synchronous call when <rdar://problem/16207002> is fixed.
3170     const bool useSyncRequest = true;
3171
3172     if (useSyncRequest) {
3173         completionHandler(_page->applyAutocorrection(correction, input) ? [WKAutocorrectionRects autocorrectionRectsWithRects:_autocorrectionData.textFirstRect lastRect:_autocorrectionData.textLastRect] : nil);
3174         return;
3175     }
3176     _autocorrectionData.autocorrectionHandler = [completionHandler copy];
3177     RetainPtr<WKContentView> view = self;
3178     _page->applyAutocorrection(correction, input, [view](const String& string, WebKit::CallbackBase::Error error) {
3179         view->_autocorrectionData.autocorrectionHandler(!string.isNull() ? [WKAutocorrectionRects autocorrectionRectsWithRects:view->_autocorrectionData.textFirstRect lastRect:view->_autocorrectionData.textLastRect] : nil);
3180         [view->_autocorrectionData.autocorrectionHandler release];
3181         view->_autocorrectionData.autocorrectionHandler = nil;
3182     });
3183 }
3184
3185 - (void)requestAutocorrectionContextWithCompletionHandler:(void (^)(UIWKAutocorrectionContext *autocorrectionContext))completionHandler
3186 {
3187     // FIXME: Remove the synchronous call when <rdar://problem/16207002> is fixed.
3188     const bool useSyncRequest = true;
3189
3190     if (useSyncRequest) {
3191         String beforeText;
3192         String markedText;
3193         String selectedText;
3194         String afterText;
3195         uint64_t location;
3196         uint64_t length;
3197         _page->getAutocorrectionContext(beforeText, markedText, selectedText, afterText, location, length);
3198         completionHandler([WKAutocorrectionContext autocorrectionContextWithData:beforeText markedText:markedText selectedText:selectedText afterText:afterText selectedRangeInMarkedText:NSMakeRange(location, length)]);
3199     } else {
3200         _autocorrectionData.autocorrectionContextHandler = [completionHandler copy];
3201         RetainPtr<WKContentView> view = self;
3202         _page->requestAutocorrectionContext([view](const String& beforeText, const String& markedText, const String& selectedText, const String& afterText, uint64_t location, uint64_t length, WebKit::CallbackBase::Error) {
3203             view->_autocorrectionData.autocorrectionContextHandler([WKAutocorrectionContext autocorrectionContextWithData:beforeText markedText:markedText selectedText:selectedText afterText:afterText selectedRangeInMarkedText:NSMakeRange(location, length)]);
3204         });
3205     }
3206 }
3207
3208 // UIWebFormAccessoryDelegate
3209 - (void)accessoryDone
3210 {
3211     [self resignFirstResponder];
3212 }
3213
3214 - (NSArray *)keyCommands
3215 {
3216     if (!_page->editorState().isContentEditable)
3217         return nil;
3218
3219     static NSArray* editableKeyCommands = [@[
3220        [UIKeyCommand keyCommandWithInput:@"\t" modifierFlags:0 action:@selector(_nextAccessoryTab:)],
3221        [UIKeyCommand keyCommandWithInput:@"\t" modifierFlags:UIKeyModifierShift action:@selector(_prevAccessoryTab:)]
3222     ] retain];
3223     return editableKeyCommands;
3224 }
3225
3226 - (void)_nextAccessoryTab:(id)sender
3227 {
3228     [self accessoryTab:YES];
3229 }
3230
3231 - (void)_prevAccessoryTab:(id)sender
3232 {
3233     [self accessoryTab:NO];
3234 }
3235
3236 - (void)accessoryTab:(BOOL)isNext
3237 {
3238     [self _endEditing];
3239     _inputPeripheral = nil;
3240
3241     _didAccessoryTabInitiateFocus = YES; // Will be cleared in either -_displayFormNodeInputView or -cleanupInteraction.
3242     [self beginSelectionChange];
3243     RetainPtr<WKContentView> view = self;
3244     _page->focusNextAssistedNode(isNext, [view](WebKit::CallbackBase::Error) {
3245         [view endSelectionChange];
3246         [view reloadInputViews];
3247     });
3248 }
3249
3250 - (void)_becomeFirstResponderWithSelectionMovingForward:(BOOL)selectingForward completionHandler:(void (^)(BOOL didBecomeFirstResponder))completionHandler
3251 {
3252     auto completionHandlerCopy = Block_copy(completionHandler);
3253     RetainPtr<WKContentView> view = self;
3254     _page->setInitialFocus(selectingForward, false, WebKit::WebKeyboardEvent(), [view, completionHandlerCopy](WebKit::CallbackBase::Error) {
3255         BOOL didBecomeFirstResponder = view->_assistedNodeInformation.elementType != InputType::None && [view becomeFirstResponder];
3256         completionHandlerCopy(didBecomeFirstResponder);
3257         Block_release(completionHandlerCopy);
3258     });
3259 }
3260
3261 - (WebCore::Color)_tapHighlightColorForFastClick:(BOOL)forFastClick
3262 {
3263     ASSERT(_showDebugTapHighlightsForFastClicking);
3264     return forFastClick ? WebCore::Color(0, 225, 0, 127) : WebCore::Color(225, 0, 0, 127);
3265 }
3266
3267 - (void)_setDoubleTapGesturesEnabled:(BOOL)enabled
3268 {
3269     if (enabled && ![_doubleTapGestureRecognizer isEnabled]) {
3270         // The first tap recognized after re-enabling double tap gestures will not wait for the
3271         // second tap before committing. To fix this, we use a new double tap gesture recognizer.
3272         [self removeGestureRecognizer:_doubleTapGestureRecognizer.get()];
3273         [_doubleTapGestureRecognizer setDelegate:nil];
3274         [self _createAndConfigureDoubleTapGestureRecognizer];
3275     }
3276
3277     if (_showDebugTapHighlightsForFastClicking && !enabled)
3278         _tapHighlightInformation.color = [self _tapHighlightColorForFastClick:YES];
3279
3280     [_doubleTapGestureRecognizer setEnabled:enabled];
3281     [_nonBlockingDoubleTapGestureRecognizer setEnabled:!enabled];
3282     [self _resetIsDoubleTapPending];
3283 }
3284
3285 - (void)accessoryAutoFill
3286 {
3287     id <_WKInputDelegate> inputDelegate = [_webView _inputDelegate];
3288     if ([inputDelegate respondsToSelector:@selector(_webView:accessoryViewCustomButtonTappedInFormInputSession:)])
3289         [inputDelegate _webView:_webView accessoryViewCustomButtonTappedInFormInputSession:_formInputSession.get()];
3290 }
3291
3292 - (void)accessoryClear
3293 {
3294     _page->setAssistedNodeValue(String());
3295 }
3296
3297 - (void)_updateAccessory
3298 {
3299     [_formAccessoryView setNextEnabled:_assistedNodeInformation.hasNextNode];
3300     [_formAccessoryView setPreviousEnabled:_assistedNodeInformation.hasPreviousNode];
3301
3302     if (currentUserInterfaceIdiomIsPad())
3303         [_formAccessoryView setClearVisible:NO];
3304     else {
3305         switch (_assistedNodeInformation.elementType) {
3306         case InputType::Date:
3307         case InputType::Month:
3308         case InputType::DateTimeLocal:
3309         case InputType::Time:
3310             [_formAccessoryView setClearVisible:YES];
3311             break;
3312         default:
3313             [_formAccessoryView setClearVisible:NO];
3314             break;
3315         }
3316     }
3317
3318     // FIXME: hide or show the AutoFill button as needed.
3319 }
3320
3321 // Keyboard interaction
3322 // UITextInput protocol implementation
3323
3324 - (BOOL)_allowAnimatedUpdateSelectionRectViews
3325 {
3326     return NO;
3327 }
3328
3329 - (void)beginSelectionChange
3330 {
3331     [self.inputDelegate selectionWillChange:self];
3332 }
3333
3334 - (void)endSelectionChange
3335 {
3336     [self.inputDelegate selectionDidChange:self];
3337 }
3338
3339 - (void)insertTextSuggestion:(UITextSuggestion *)textSuggestion
3340 {
3341     // FIXME: Replace NSClassFromString with actual class as soon as UIKit submitted the new class into the iOS SDK.
3342     if ([textSuggestion isKindOfClass:[UITextAutofillSuggestion class]]) {
3343         _page->autofillLoginCredentials([(UITextAutofillSuggestion *)textSuggestion username], [(UITextAutofillSuggestion *)textSuggestion password]);
3344         return;
3345     }
3346 #if ENABLE(DATALIST_ELEMENT)
3347     if ([textSuggestion isKindOfClass:[WKDataListTextSuggestion class]]) {
3348         _page->setAssistedNodeValue([textSuggestion inputText]);
3349         return;
3350     }
3351 #endif
3352     id <_WKInputDelegate> inputDelegate = [_webView _inputDelegate];
3353     if ([inputDelegate respondsToSelector:@selector(_webView:insertTextSuggestion:inInputSession:)])
3354         [inputDelegate _webView:_webView insertTextSuggestion:textSuggestion inInputSession:_formInputSession.get()];
3355 }
3356
3357 - (NSString *)textInRange:(UITextRange *)range
3358 {
3359     return nil;
3360 }
3361
3362 - (void)replaceRange:(UITextRange *)range withText:(NSString *)text
3363 {
3364 }
3365
3366 - (UITextRange *)selectedTextRange
3367 {
3368     if (_page->editorState().selectionIsNone || _page->editorState().isMissingPostLayoutData)
3369         return nil;
3370     // UIKit does not expect caret selections in noneditable content.
3371     if (!_page->editorState().isContentEditable && !_page->editorState().selectionIsRange)
3372         return nil;
3373     
3374     auto& postLayoutEditorStateData = _page->editorState().postLayoutData();
3375     FloatRect startRect = postLayoutEditorStateData.caretRectAtStart;
3376     FloatRect endRect = postLayoutEditorStateData.caretRectAtEnd;
3377     double inverseScale = [self inverseScale];
3378     // We want to keep the original caret width, while the height scales with
3379     // the content taking orientation into account.
3380     // We achieve this by scaling the width with the inverse
3381     // scale factor. This way, when it is converted from the content view
3382     // the width remains unchanged.
3383     if (startRect.width() < startRect.height())
3384         startRect.setWidth(startRect.width() * inverseScale);
3385     else
3386         startRect.setHeight(startRect.height() * inverseScale);
3387     if (endRect.width() < endRect.height()) {
3388         double delta = endRect.width();
3389         endRect.setWidth(endRect.width() * inverseScale);
3390         delta = endRect.width() - delta;
3391         endRect.move(delta, 0);
3392     } else {
3393         double delta = endRect.height();
3394         endRect.setHeight(endRect.height() * inverseScale);
3395         delta = endRect.height() - delta;
3396         endRect.move(0, delta);
3397     }
3398     return [WKTextRange textRangeWithState:_page->editorState().selectionIsNone
3399                                    isRange:_page->editorState().selectionIsRange
3400                                 isEditable:_page->editorState().isContentEditable
3401                                  startRect:startRect
3402                                    endRect:endRect
3403                             selectionRects:[self webSelectionRects]
3404                         selectedTextLength:postLayoutEditorStateData.selectedTextLength];
3405 }
3406
3407 - (CGRect)caretRectForPosition:(UITextPosition *)position
3408 {
3409     return ((WKTextPosition *)position).positionRect;
3410 }
3411
3412 - (NSArray *)selectionRectsForRange:(UITextRange *)range
3413 {
3414     return [WKTextSelectionRect textSelectionRectsWithWebRects:((WKTextRange *)range).selectionRects];
3415 }
3416
3417 - (void)setSelectedTextRange:(UITextRange *)range
3418 {
3419     if (range)
3420         return;
3421 #if !PLATFORM(IOSMAC)
3422     if (!hasAssistedNode(_assistedNodeInformation))
3423         return;
3424 #endif
3425     [self clearSelection];
3426 }
3427
3428 - (BOOL)hasMarkedText
3429 {
3430     return [_markedText length];
3431 }
3432
3433 - (NSString *)markedText
3434 {
3435     return _markedText.get();
3436 }
3437
3438 - (UITextRange *)markedTextRange
3439 {
3440     return nil;
3441 }
3442
3443 - (NSDictionary *)markedTextStyle
3444 {
3445     return nil;
3446 }
3447
3448 - (void)setMarkedTextStyle:(NSDictionary *)styleDictionary
3449 {
3450 }
3451
3452 - (void)setMarkedText:(NSString *)markedText selectedRange:(NSRange)selectedRange
3453 {
3454     _markedText = markedText;
3455     _page->setCompositionAsync(markedText, Vector<WebCore::CompositionUnderline>(), selectedRange, EditingRange());
3456 }
3457
3458 - (void)unmarkText
3459 {
3460     _markedText = nil;
3461     _page->confirmCompositionAsync();
3462 }
3463
3464 - (UITextPosition *)beginningOfDocument
3465 {
3466     return nil;
3467 }
3468
3469 - (UITextPosition *)endOfDocument
3470 {
3471     return nil;
3472 }
3473
3474 - (UITextRange *)textRangeFromPosition:(UITextPosition *)fromPosition toPosition:(UITextPosition *)toPosition
3475 {
3476     return nil;
3477 }
3478
3479 - (UITextPosition *)positionFromPosition:(UITextPosition *)position offset:(NSInteger)offset
3480 {
3481     return nil;
3482 }
3483
3484 - (UITextPosition *)positionFromPosition:(UITextPosition *)position inDirection:(UITextLayoutDirection)direction offset:(NSInteger)offset
3485 {
3486     return nil;
3487 }
3488
3489 - (NSComparisonResult)comparePosition:(UITextPosition *)position toPosition:(UITextPosition *)other
3490 {
3491     return NSOrderedSame;
3492 }
3493
3494 - (NSInteger)offsetFromPosition:(UITextPosition *)from toPosition:(UITextPosition *)toPosition
3495 {
3496     return 0;
3497 }
3498
3499 - (id <UITextInputTokenizer>)tokenizer
3500 {
3501     return nil;
3502 }
3503
3504 - (UITextPosition *)positionWithinRange:(UITextRange *)range farthestInDirection:(UITextLayoutDirection)direction
3505 {
3506     return nil;
3507 }
3508
3509 - (UITextRange *)characterRangeByExtendingPosition:(UITextPosition *)position inDirection:(UITextLayoutDirection)direction
3510 {
3511     return nil;
3512 }
3513
3514 ALLOW_DEPRECATED_DECLARATIONS_BEGIN
3515 - (UITextWritingDirection)baseWritingDirectionForPosition:(UITextPosition *)position inDirection:(UITextStorageDirection)direction
3516 {
3517     return UITextWritingDirectionLeftToRight;
3518 }
3519
3520 - (void)setBaseWritingDirection:(UITextWritingDirection)writingDirection forRange:(UITextRange *)range
3521 {
3522 }
3523 ALLOW_DEPRECATED_DECLARATIONS_END
3524
3525 - (CGRect)firstRectForRange:(UITextRange *)range
3526 {
3527     return CGRectZero;
3528 }
3529
3530 /* Hit testing. */
3531 - (UITextPosition *)closestPositionToPoint:(CGPoint)point
3532 {
3533 #if PLATFORM(IOSMAC)
3534     InteractionInformationRequest request(roundedIntPoint(point));
3535     [self requestAsynchronousPositionInformationUpdate:request];
3536     if ([self _currentPositionInformationIsApproximatelyValidForRequest:request] && _positionInformation.isSelectable)
3537         return [WKTextPosition textPositionWithRect:_positionInformation.caretRect];
3538 #endif
3539     return nil;
3540 }
3541
3542 - (UITextPosition *)closestPositionToPoint:(CGPoint)point withinRange:(UITextRange *)range
3543 {
3544     return nil;
3545 }
3546
3547 - (UITextRange *)characterRangeAtPoint:(CGPoint)point
3548 {
3549     return nil;
3550 }
3551
3552 - (void)deleteBackward
3553 {
3554     _page->executeEditCommand("deleteBackward"_s);
3555 }
3556
3557 // Inserts the given string, replacing any selected or marked text.
3558 - (void)insertText:(NSString *)aStringValue
3559 {
3560     _page->insertTextAsync(aStringValue, EditingRange());
3561 }
3562
3563 - (BOOL)hasText
3564 {
3565     auto& editorState = _page->editorState();
3566     return !editorState.isMissingPostLayoutData && editorState.postLayoutData().hasPlainText;
3567 }
3568
3569 // end of UITextInput protocol implementation
3570
3571 static UITextAutocapitalizationType toUITextAutocapitalize(AutocapitalizeType webkitType)
3572 {
3573     switch (webkitType) {
3574     case AutocapitalizeTypeDefault:
3575         return UITextAutocapitalizationTypeSentences;
3576     case AutocapitalizeTypeNone:
3577         return UITextAutocapitalizationTypeNone;
3578     case AutocapitalizeTypeWords:
3579         return UITextAutocapitalizationTypeWords;
3580     case AutocapitalizeTypeSentences:
3581         return UITextAutocapitalizationTypeSentences;
3582     case AutocapitalizeTypeAllCharacters:
3583         return UITextAutocapitalizationTypeAllCharacters;
3584     }
3585
3586     return UITextAutocapitalizationTypeSentences;
3587 }
3588
3589 static NSString *contentTypeFromFieldName(WebCore::AutofillFieldName fieldName)
3590 {
3591     switch (fieldName) {
3592     case WebCore::AutofillFieldName::Name:
3593         return UITextContentTypeName;
3594     case WebCore::AutofillFieldName::HonorificPrefix:
3595         return UITextContentTypeNamePrefix;
3596     case WebCore::AutofillFieldName::GivenName:
3597         return UITextContentTypeMiddleName;
3598     case WebCore::AutofillFieldName::AdditionalName:
3599         return UITextContentTypeMiddleName;
3600     case WebCore::AutofillFieldName::FamilyName:
3601         return UITextContentTypeFamilyName;
3602     case WebCore::AutofillFieldName::HonorificSuffix:
3603         return UITextContentTypeNameSuffix;
3604     case WebCore::AutofillFieldName::Nickname:
3605         return UITextContentTypeNickname;
3606     case WebCore::AutofillFieldName::OrganizationTitle:
3607         return UITextContentTypeJobTitle;
3608     case WebCore::AutofillFieldName::Organization:
3609         return UITextContentTypeOrganizationName;
3610     case WebCore::AutofillFieldName::StreetAddress:
3611         return UITextContentTypeFullStreetAddress;
3612     case WebCore::AutofillFieldName::AddressLine1:
3613         return UITextContentTypeStreetAddressLine1;
3614     case WebCore::AutofillFieldName::AddressLine2:
3615         return UITextContentTypeStreetAddressLine2;
3616     case WebCore::AutofillFieldName::AddressLevel3:
3617         return UITextContentTypeSublocality;
3618     case WebCore::AutofillFieldName::AddressLevel2:
3619         return UITextContentTypeAddressCity;
3620     case WebCore::AutofillFieldName::AddressLevel1:
3621         return UITextContentTypeAddressState;
3622     case WebCore::AutofillFieldName::CountryName:
3623         return UITextContentTypeCountryName;
3624     case WebCore::AutofillFieldName::PostalCode:
3625         return UITextContentTypePostalCode;
3626     case WebCore::AutofillFieldName::Tel:
3627         return UITextContentTypeTelephoneNumber;
3628     case WebCore::AutofillFieldName::Email:
3629         return UITextContentTypeEmailAddress;
3630     case WebCore::AutofillFieldName::URL:
3631         return UITextContentTypeURL;
3632     case WebCore::AutofillFieldName::Username:
3633         return UITextContentTypeUsername;
3634     case WebCore::AutofillFieldName::None:
3635     case WebCore::AutofillFieldName::NewPassword:
3636     case WebCore::AutofillFieldName::CurrentPassword:
3637     case WebCore::AutofillFieldName::AddressLine3:
3638     case WebCore::AutofillFieldName::AddressLevel4:
3639     case WebCore::AutofillFieldName::Country:
3640     case WebCore::AutofillFieldName::CcName:
3641     case WebCore::AutofillFieldName::CcGivenName:
3642     case WebCore::AutofillFieldName::CcAdditionalName:
3643     case WebCore::AutofillFieldName::CcFamilyName:
3644     case WebCore::AutofillFieldName::CcNumber:
3645     case WebCore::AutofillFieldName::CcExp:
3646     case WebCore::AutofillFieldName::CcExpMonth:
3647     case WebCore::AutofillFieldName::CcExpYear:
3648     case WebCore::AutofillFieldName::CcCsc:
3649     case WebCore::AutofillFieldName::CcType:
3650     case WebCore::AutofillFieldName::TransactionCurrency:
3651     case WebCore::AutofillFieldName::TransactionAmount:
3652     case WebCore::AutofillFieldName::Language:
3653     case WebCore::AutofillFieldName::Bday:
3654     case WebCore::AutofillFieldName::BdayDay:
3655     case WebCore::AutofillFieldName::BdayMonth:
3656     case WebCore::AutofillFieldName::BdayYear:
3657     case WebCore::AutofillFieldName::Sex:
3658     case WebCore::AutofillFieldName::Photo:
3659     case WebCore::AutofillFieldName::TelCountryCode:
3660     case WebCore::AutofillFieldName::TelNational:
3661     case WebCore::AutofillFieldName::TelAreaCode:
3662     case WebCore::AutofillFieldName::TelLocal:
3663     case WebCore::AutofillFieldName::TelLocalPrefix:
3664     case WebCore::AutofillFieldName::TelLocalSuffix:
3665     case WebCore::AutofillFieldName::TelExtension:
3666     case WebCore::AutofillFieldName::Impp:
3667         break;
3668     };
3669
3670     return nil;
3671 }
3672
3673 // UITextInputPrivate protocol
3674 // Direct access to the (private) UITextInputTraits object.
3675 - (UITextInputTraits *)textInputTraits
3676 {
3677     if (!_traits)
3678         _traits = adoptNS([[UITextInputTraits alloc] init]);
3679
3680     [_traits setSecureTextEntry:_assistedNodeInformation.elementType == InputType::Password || [_formInputSession forceSecureTextEntry]];
3681     [_traits setShortcutConversionType:_assistedNodeInformation.elementType == InputType::Password ? UITextShortcutConversionTypeNo : UITextShortcutConversionTypeDefault];
3682
3683     if (!_assistedNodeInformation.formAction.isEmpty())
3684         [_traits setReturnKeyType:(_assistedNodeInformation.elementType == InputType::Search) ? UIReturnKeySearch : UIReturnKeyGo];
3685
3686     if (_assistedNodeInformation.elementType == InputType::Password || _assistedNodeInformation.elementType == InputType::Email || _assistedNodeInformation.elementType == InputType::URL || _assistedNodeInformation.formAction.contains("login")) {
3687         [_traits setAutocapitalizationType:UITextAutocapitalizationTypeNone];
3688         [_traits setAutocorrectionType:UITextAutocorrectionTypeNo];
3689     } else {
3690         [_traits setAutocapitalizationType:toUITextAutocapitalize(_assistedNodeInformation.autocapitalizeType)];
3691         [_traits setAutocorrectionType:_assistedNodeInformation.isAutocorrect ? UITextAutocorrectionTypeYes : UITextAutocorrectionTypeNo];
3692     }
3693
3694     switch (_assistedNodeInformation.inputMode) {
3695     case InputMode::Unspecified:
3696         switch (_assistedNodeInformation.elementType) {
3697         case InputType::Phone:
3698             [_traits setKeyboardType:UIKeyboardTypePhonePad];
3699             break;
3700         case InputType::URL:
3701             [_traits setKeyboardType:UIKeyboardTypeURL];
3702             break;
3703         case InputType::Email:
3704             [_traits setKeyboardType:UIKeyboardTypeEmailAddress];
3705             break;
3706         case InputType::Number:
3707             [_traits setKeyboardType:UIKeyboardTypeNumbersAndPunctuation];
3708             break;
3709         case InputType::NumberPad:
3710             [_traits setKeyboardType:UIKeyboardTypeNumberPad];
3711             break;
3712         case InputType::None:
3713         case InputType::ContentEditable:
3714         case InputType::Text:
3715         case InputType::Password:
3716         case InputType::TextArea:
3717         case InputType::Search:
3718         case InputType::Date:
3719         case InputType::DateTime:
3720         case InputType::DateTimeLocal:
3721         case InputType::Month:
3722         case InputType::Week:
3723         case InputType::Time:
3724         case InputType::Select:
3725 #if ENABLE(INPUT_TYPE_COLOR)
3726         case InputType::Color:
3727 #endif
3728             [_traits setKeyboardType:UIKeyboardTypeDefault];
3729         }
3730         break;
3731     case InputMode::None:
3732         break;
3733     case InputMode::Text:
3734         [_traits setKeyboardType:UIKeyboardTypeDefault];
3735         break;
3736     case InputMode::Telephone:
3737         [_traits setKeyboardType:UIKeyboardTypePhonePad];
3738         break;
3739     case InputMode::Url:
3740         [_traits setKeyboardType:UIKeyboardTypeURL];
3741         break;
3742     case InputMode::Email:
3743         [_traits setKeyboardType:UIKeyboardTypeEmailAddress];
3744         break;
3745     case InputMode::Numeric:
3746         [_traits setKeyboardType:UIKeyboardTypeNumbersAndPunctuation];
3747         break;
3748     case InputMode::Decimal:
3749         [_traits setKeyboardType:UIKeyboardTypeDecimalPad];
3750         break;
3751     case InputMode::Search:
3752         [_traits setKeyboardType:UIKeyboardTypeWebSearch];
3753         break;
3754     }
3755
3756     [_traits setTextContentType:contentTypeFromFieldName(_assistedNodeInformation.autofillFieldName)];
3757
3758     return _traits.get();
3759 }
3760
3761 - (UITextInteractionAssistant *)interactionAssistant
3762 {
3763     return _textSelectionAssistant.get();
3764 }
3765
3766 - (id<UISelectionInteractionAssistant>)selectionInteractionAssistant
3767 {
3768     return nil;
3769 }
3770
3771 // NSRange support.  Would like to deprecate to the extent possible, although some support
3772 // (i.e. selectionRange) has shipped as API.
3773 - (NSRange)selectionRange
3774 {
3775     return NSMakeRange(NSNotFound, 0);
3776 }
3777
3778 - (CGRect)rectForNSRange:(NSRange)range
3779 {
3780     return CGRectZero;
3781 }
3782
3783 - (NSRange)_markedTextNSRange
3784 {
3785     return NSMakeRange(NSNotFound, 0);
3786 }
3787
3788 // DOM range support.
3789 - (DOMRange *)selectedDOMRange
3790 {
3791     return nil;
3792 }
3793
3794 - (void)setSelectedDOMRange:(DOMRange *)range affinityDownstream:(BOOL)affinityDownstream
3795 {
3796 }
3797
3798 // Modify text without starting a new undo grouping.
3799 - (void)replaceRangeWithTextWithoutClosingTyping:(UITextRange *)range replacementText:(NSString *)text
3800 {
3801 }
3802
3803 // Caret rect support.  Shouldn't be necessary, but firstRectForRange doesn't offer precisely
3804 // the same functionality.
3805 - (CGRect)rectContainingCaretSelection
3806 {
3807     return CGRectZero;
3808 }
3809
3810 // Web events.
3811 - (BOOL)requiresKeyEvents
3812 {
3813     return YES;
3814 }
3815
3816 - (void)_handleKeyUIEvent:(::UIEvent *)event
3817 {
3818     bool isHardwareKeyboardEvent = !!event._hidEvent;
3819     if (isHardwareKeyboardEvent && ((UIPhysicalKeyboardEvent *)event)._inputFlags & kUIKeyboardInputModifierFlagsChanged)
3820         _page->updateCurrentModifierState();
3821
3822     // We only want to handle key event from the hardware keyboard when we are
3823     // first responder and we are not interacting with editable content.
3824     if ([self isFirstResponder] && isHardwareKeyboardEvent && !_page->editorState().isContentEditable) {
3825         [self handleKeyEvent:event];
3826         return;
3827     }
3828
3829     [super _handleKeyUIEvent:event];
3830 }
3831
3832 - (void)handleKeyEvent:(::UIEvent *)event
3833 {
3834     // WebCore has already seen the event, no need for custom processing.
3835     if (event == _uiEventBeingResent)
3836         return;
3837
3838     auto webEvent = adoptNS([[WKWebEvent alloc] initWithEvent:event]);
3839     
3840     [self handleKeyWebEvent:webEvent.get()];
3841 }
3842
3843 - (void)handleKeyWebEvent:(::WebEvent *)theEvent
3844 {
3845     _page->handleKeyboardEvent(NativeWebKeyboardEvent(theEvent));
3846 }
3847
3848 - (void)handleKeyWebEvent:(::WebEvent *)theEvent withCompletionHandler:(void (^)(::WebEvent *theEvent, BOOL wasHandled))completionHandler
3849 {
3850     _keyWebEventHandler = makeBlockPtr(completionHandler);
3851     _page->handleKeyboardEvent(NativeWebKeyboardEvent(theEvent));
3852 }
3853
3854 - (void)_didHandleKeyEvent:(::WebEvent *)event eventWasHandled:(BOOL)eventWasHandled
3855 {
3856     [_keyboardScrollingAnimator handleKeyEvent:event];
3857     
3858     if (auto handler = WTFMove(_keyWebEventHandler)) {
3859         handler(event, eventWasHandled);
3860         return;
3861     }
3862
3863     // If we aren't interacting with editable content, we still need to call [super _handleKeyUIEvent:]
3864     // so that keyboard repeat will work correctly. If we are interacting with editable content,
3865     // we already did so in _handleKeyUIEvent.
3866     if (eventWasHandled && _page->editorState().isContentEditable)
3867         return;
3868
3869     if (![event isKindOfClass:[WKWebEvent class]])
3870         return;
3871
3872     // Resending the event may destroy this WKContentView.
3873     RetainPtr<WKContentView> protector(self);
3874
3875     // We keep here the event when resending it to the application to distinguish
3876     // the case of a new event from one that has been already sent to WebCore.
3877     ASSERT(!_uiEventBeingResent);
3878     _uiEventBeingResent = [(WKWebEvent *)event uiEvent];
3879     [super _handleKeyUIEvent:_uiEventBeingResent.get()];
3880     _uiEventBeingResent = nil;
3881 }
3882
3883 - (BOOL)_interpretKeyEvent:(::WebEvent *)event isCharEvent:(BOOL)isCharEvent
3884 {
3885     static const unsigned kWebEnterKey = 0x0003;
3886     static const unsigned kWebBackspaceKey = 0x0008;
3887     static const unsigned kWebReturnKey = 0x000D;
3888     static const unsigned kWebDeleteKey = 0x007F;
3889     static const unsigned kWebSpaceKey = 0x20;
3890
3891     if (event.keyboardFlags & WebEventKeyboardInputModifierFlagsChanged)
3892         return NO;
3893
3894     BOOL contentEditable = _page->editorState().isContentEditable;
3895
3896     if (!contentEditable && event.isTabKey)
3897         return NO;
3898
3899     if ([_keyboardScrollingAnimator beginWithEvent:event])
3900         return YES;
3901
3902     UIKeyboardImpl *keyboard = [UIKeyboardImpl sharedInstance];
3903     NSString *characters = event.characters;
3904     
3905     if (!characters.length)
3906         return NO;
3907
3908     switch ([characters characterAtIndex:0]) {
3909     case kWebBackspaceKey:
3910     case kWebDeleteKey:
3911         if (contentEditable) {
3912             [keyboard deleteFromInputWithFlags:event.keyboardFlags];
3913             return YES;
3914         }
3915         break;
3916
3917     case kWebSpaceKey:
3918         if (contentEditable && isCharEvent) {
3919             [keyboard addInputString:event.characters withFlags:event.keyboardFlags withInputManagerHint:event.inputManagerHint];
3920             return YES;
3921         }
3922         break;
3923
3924     case kWebEnterKey:
3925     case kWebReturnKey:
3926         if (contentEditable && isCharEvent) {
3927             // Map \r from HW keyboard to \n to match the behavior of the soft keyboard.
3928             [keyboard addInputString:@"\n" withFlags:0 withInputManagerHint:nil];
3929             return YES;
3930         }
3931         break;
3932
3933     default:
3934         if (contentEditable && isCharEvent) {
3935             [keyboard addInputString:event.characters withFlags:event.keyboardFlags withInputManagerHint:event.inputManagerHint];
3936             return YES;
3937         }
3938         break;
3939     }
3940
3941     return NO;
3942 }
3943
3944 - (BOOL)isScrollableForKeyboardScrollViewAnimator:(WKKeyboardScrollViewAnimator *)animator
3945 {
3946     if (_page->editorState().isContentEditable)
3947         return NO;
3948
3949     if (_assistedNodeInformation.elementType == InputType::Select)
3950         return NO;
3951
3952     return YES;
3953 }
3954
3955 - (CGFloat)keyboardScrollViewAnimator:(WKKeyboardScrollViewAnimator *)animator distanceForIncrement:(ScrollingIncrement)increment
3956 {
3957     switch (increment) {
3958     case ScrollingIncrement::Document:
3959         return [self convertRect:self.bounds toView:_webView].size.height;
3960     case ScrollingIncrement::Page: