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antti@apple.com authored
Reviewed by Eric. Some preparations for additive animations and animations in <use>. - Disallow animation elements in instance trees. - Fix buggy SVGUseElement::removeDisallowedElementsFromSubtree(), make it public and static - Invoke it from SVGElementInstance::updateInstance() to clean up the instance tree there as well. - Add mechanism for blocking instance updates when an animation changes the referenced tree. The added assert in SVGSMILElement::insertedIntoDocument() verifies the fixes with the existing test cases. * svg/SVGAElement.cpp: (WebCore::SVGAElement::defaultEventHandler): * svg/SVGElementInstance.cpp: (WebCore::SVGElementInstance::updateInstance): * svg/SVGStyledElement.cpp: (WebCore::SVGStyledElement::updateElementInstance): (WebCore::SVGStyledElement::setInstanceUpdatesBlocked): * svg/SVGStyledElement.h: * svg/SVGUseElement.cpp: (WebCore::isDisallowedElement): (WebCore::SVGUseElement::removeDisallowedElementsFromSubtree): * svg/SVGUseElement.h: * svg/animation/SVGSMILElement.cpp: (WebCore::SVGSMILElement::insertedIntoDocument): (WebCore::SVGSMILElement::isSMILElement): (WebCore::SVGSMILElement::connectConditions): (WebCore::SVGSMILElement::disconnectConditions): * svg/animation/SVGSMILElement.h: git-svn-id: http://svn.webkit.org/repository/webkit/trunk@31891 268f45cc-cd09-0410-ab3c-d52691b4dbfc
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