132657 2014-05-07 12:30:43 -0700 WK2: Programatic scroll requests during scroll or zoom animation to reveal focused element are ignored. 2014-05-07 15:43:35 -0700 1 1 1 Unclassified WebKit WebKit2 528+ (Nightly build) iPhone / iPad Unspecified RESOLVED FIXED InRadar P2 Normal --- 1 enrica enrica cmarcelo commit-queue esprehn+autocc kangil.han oldest_to_newest 1007398 0 enrica 2014-05-07 12:30:43 -0700 Given the asynchronous scrolling model of WK2 on iOS, we can receive a request to scroll from JavaScript while the UI process is still animating to reveal the focused input element. This breaks the behavior of pages like www.amazon.co.jp on iOS. <rdar://problem/16468462> 1007419 1 231018 enrica 2014-05-07 13:44:15 -0700 Created attachment 231018 Patch 1007446 2 231018 benjamin 2014-05-07 14:53:38 -0700 Comment on attachment 231018 Patch View in context: https://bugs.webkit.org/attachment.cgi?id=231018&action=review > Source/WebCore/dom/Element.cpp:1983 > - if (document().page()) > - document().page()->chrome().client().elementDidFocus(this); > - > RefPtr<FocusEvent> event = FocusEvent::create(eventNames().focusEvent, false, false, document().defaultView(), 0, oldFocusedElement); > EventDispatcher::dispatchEvent(this, event.release()); > + if (document().page()) > + document().page()->chrome().client().elementDidFocus(this); > } As discussed: let's move this on a separate patch, and handle the programmatic scroll. > Source/WebCore/platform/ScrollableArea.h:72 > + virtual bool inProgrammaticScroll() const { return false; } Please move this to ScrollView. You should also add override on FrameView's implementation. > Source/WebKit2/UIProcess/API/Cocoa/WKWebView.mm:118 > + BOOL _isAnimatingScrollOrZoom; Let's try to remove this and stop the animations systematically. We will need a more generic heuristic to solve conflicts between user gesture and animation origination from WebProcess's requests. 1007458 3 enrica 2014-05-07 15:43:35 -0700 Committed revision 168447. 231018 2014-05-07 13:44:15 -0700 2014-05-07 14:53:38 -0700 Patch programatic-scroll.txt text/plain 8112 enrica SW5kZXg6IFNvdXJjZS9XZWJDb3JlL0NoYW5nZUxvZwo9PT09PT09PT09PT09PT09PT09PT09PT09 PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09Ci0tLSBTb3VyY2UvV2Vi Q29yZS9DaGFuZ2VMb2cJKHJldmlzaW9uIDE2ODQzNSkKKysrIFNvdXJjZS9XZWJDb3JlL0NoYW5n ZUxvZwkod29ya2luZyBjb3B5KQpAQCAtMSwzICsxLDMyIEBACisyMDE0LTA1LTA3ICBFbnJpY2Eg Q2FzdWNjaSAgPGVucmljYUBhcHBsZS5jb20+CisKKyAgICAgICAgV0syOiBQcm9ncmFtYXRpYyBz Y3JvbGwgcmVxdWVzdHMgZHVyaW5nIHNjcm9sbCBvciB6b29tIGFuaW1hdGlvbiB0byByZXZlYWwg Zm9jdXNlZCBlbGVtZW50IGFyZSBpZ25vcmVkLgorICAgICAgICBodHRwczovL2J1Z3Mud2Via2l0 Lm9yZy9zaG93X2J1Zy5jZ2k/aWQ9MTMyNjU3CisgICAgICAgIDxyZGFyOi8vcHJvYmxlbS8xNjQ2 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