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/*
* 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 = 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
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