SVG: SVGAnimateElement should not cache |m_animatedElements|

Source/core/svg/SVGUseElement.cpp

 /*
  * Copyright (C) 2004, 2005, 2006, 2007, 2008 Nikolas Zimmermann <zimmermann@kde.org>
  * Copyright (C) 2004, 2005, 2006, 2007 Rob Buis <buis@kde.org>
  * Copyright (C) Research In Motion Limited 2009-2010. All rights reserved.
  * Copyright (C) 2011 Torch Mobile (Beijing) Co. Ltd. All rights reserved.
  * Copyright (C) 2012 University of Szeged
  * Copyright (C) 2012 Renata Hodovan <reni@webkit.org>
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
@@ skipping 346 matching lines @@
     }
 
     if (target->isSVGElement()) {
         buildShadowAndInstanceTree(toSVGElement(target));
         invalidateDependentShadowTrees();
     }
 
     ASSERT(!m_needsShadowTreeRecreation);
 }
 
+namespace {
+
+void rebuildNonUseElementReferencesForTree(SVGElement* shadowTreeTargetElement)
+{
+    shadowTreeTargetElement->document().accessSVGExtensions().rebuildAllElementReferencesForTarget(shadowTreeTargetElement, SVGDocumentExtensions::ExcludeUseElements);
+
+    for (SVGElement* child = Traversal<SVGElement>::firstChild(*shadowTreeTargetElement); child; child = Traversal<SVGElement>::nextSibling(*child))
+        rebuildNonUseElementReferencesForTree(child);
+}
+
+} // namespace
+
 void SVGUseElement::buildShadowAndInstanceTree(SVGElement* target)
 {
     ASSERT(!m_targetElementInstance);
 
     // <use> creates a "user agent" shadow root. Do not build the shadow/instance tree for <use>
     // elements living in a user agent shadow tree because they will get expanded in a second
     // pass -- see expandUseElementsInShadowTree().
     if (inUseShadowTree())
         return;
 
@@ skipping 67 matching lines @@
     ASSERT(shadowTreeTargetElement->correspondingElement());
     transferUseWidthAndHeightIfNeeded(*this, shadowTreeTargetElement, *shadowTreeTargetElement->correspondingElement());
 
     ASSERT(shadowTreeTargetElement->parentNode() == shadowTreeRootElement);
 
     // Transfer event listeners assigned to the referenced element to our shadow tree elements.
     transferEventListenersToShadowTree(shadowTreeTargetElement);
 
     // Update relative length information.
     updateRelativeLengthsInformation();
+
+    // Element references need to be rebuilt to include the new shadow tree.
+    // <use> elements are excluded from notification to avoid infinite loop.
+    rebuildNonUseElementReferencesForTree(target);

[kouhei (in TOK), 2014/05/26 04:35:45]

here.

 }
 
 RenderObject* SVGUseElement::createRenderer(RenderStyle*)
 {
     return new RenderSVGTransformableContainer(this);
 }
 
 static bool isDirectReference(const Node& node)
 {
     return isSVGPathElement(node)
@@ skipping 446 matching lines @@
         m_resource->addClient(this);
 }
 
 void SVGUseElement::trace(Visitor* visitor)
 {
     visitor->trace(m_targetElementInstance);
     SVGGraphicsElement::trace(visitor);
 }
 
 }