diff -r 000000000000 -r 4f2f89ce4247 WebCore/svg/SVGAnimatedPropertySynchronizer.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/WebCore/svg/SVGAnimatedPropertySynchronizer.h	Fri Sep 17 09:02:29 2010 +0300
@@ -0,0 +1,96 @@
+/*
+    Copyright (C) Research In Motion Limited 2010. All rights reserved.
+
+    This library is free software; you can redistribute it and/or
+    modify it under the terms of the GNU Library General Public
+    License as published by the Free Software Foundation; either
+    version 2 of the License, or (at your option) any later version.
+
+    This library is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+    Library General Public License for more details.
+
+    You should have received a copy of the GNU Library General Public License
+    along with this library; see the file COPYING.LIB.  If not, write to
+    the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+    Boston, MA 02110-1301, USA.
+*/
+
+#ifndef SVGAnimatedPropertySynchronizer_h
+#define SVGAnimatedPropertySynchronizer_h
+
+#include "SVGAnimatedPropertyTraits.h"
+
+#if ENABLE(SVG)
+namespace WebCore {
+
+class SVGElement;
+
+// GetOwnerElementForType implementation
+template<typename OwnerType, bool isDerivedFromSVGElement>
+struct GetOwnerElementForType;
+
+template<typename OwnerType>
+struct GetOwnerElementForType<OwnerType, true> : public Noncopyable {
+    static SVGElement* ownerElement(OwnerType* type)
+    {
+        return type;
+    }
+};
+
+template<typename OwnerType>
+struct GetOwnerElementForType<OwnerType, false> : public Noncopyable {    
+    static SVGElement* ownerElement(OwnerType* type)
+    {
+        SVGElement* context = (SVGElement*)(type->contextElement());
+        ASSERT(context);
+        return context;
+    }
+};
+
+// IsDerivedFromSVGElement implementation
+template<typename OwnerType>
+struct IsDerivedFromSVGElement : public Noncopyable {
+    static const bool value = true;
+};
+
+class SVGViewSpec;
+template<>
+struct IsDerivedFromSVGElement<SVGViewSpec> : public Noncopyable {
+    static const bool value = false;
+};
+
+// Helper template used for synchronizing SVG <-> XML properties
+template<bool isDerivedFromSVGElement>
+struct SVGAnimatedPropertySynchronizer {
+    static void synchronize(SVGElement*, const QualifiedName&, const AtomicString&);
+};
+
+template<>
+struct SVGAnimatedPropertySynchronizer<true> {
+    static void synchronize(SVGElement* ownerElement, const QualifiedName& attrName, const AtomicString& value)
+    {
+        NamedNodeMap* namedAttrMap = ownerElement->attributes(false); 
+        Attribute* old = namedAttrMap->getAttributeItem(attrName);
+        if (old && value.isNull()) 
+            namedAttrMap->removeAttribute(old->name()); 
+        else if (!old && !value.isNull()) 
+            namedAttrMap->addAttribute(ownerElement->createAttribute(attrName, value));
+        else if (old && !value.isNull()) 
+            old->setValue(value); 
+    }
+};
+
+template<>
+struct SVGAnimatedPropertySynchronizer<false> {
+    static void synchronize(SVGElement*, const QualifiedName&, const AtomicString&)
+    {
+        // no-op, for types not inheriting from Element, thus nothing to synchronize
+    }
+};
+
+};
+
+#endif
+#endif