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/*
* Copyright (C) Research In Motion Limited 2010. All rights reserved.
* Copyright (C) 2013 Samsung Electronics. 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 SVGAnimatedProperty_h
#define SVGAnimatedProperty_h
#if ENABLE(SVG)
#include "SVGAnimatedPropertyDescription.h"
#include "SVGPropertyInfo.h"
#include <wtf/RefCounted.h>
namespace WebCore {
class SVGElement;
class SVGAnimatedProperty : public RefCounted<SVGAnimatedProperty> {
public:
SVGElement* contextElement() const { return m_contextElement.get(); }
const QualifiedName& attributeName() const { return m_attributeName; }
AnimatedPropertyType animatedPropertyType() const { return m_animatedPropertyType; }
bool isAnimating() const { return m_isAnimating; }
bool isReadOnly() const { return m_isReadOnly; }
void setIsReadOnly() { m_isReadOnly = true; }
void commitChange();
virtual bool isAnimatedListTearOff() const { return false; }
// Caching facilities.
typedef HashMap<SVGAnimatedPropertyDescription, SVGAnimatedProperty*, SVGAnimatedPropertyDescriptionHash, SVGAnimatedPropertyDescriptionHashTraits> Cache;
virtual ~SVGAnimatedProperty();
template<typename OwnerType, typename TearOffType, typename PropertyType>
static PassRefPtr<TearOffType> lookupOrCreateWrapper(OwnerType* element, const SVGPropertyInfo* info, PropertyType& property)
{
ASSERT(info);
SVGAnimatedPropertyDescription key(element, info->propertyIdentifier);
Cache::AddResult result = animatedPropertyCache()->add(key, 0);
if (!result.isNewEntry)
return static_cast<TearOffType*>(result.iterator->value);
RefPtr<SVGAnimatedProperty> wrapper = TearOffType::create(element, info->attributeName, info->animatedPropertyType, property);
if (info->animatedPropertyState == PropertyIsReadOnly)
wrapper->setIsReadOnly();
// Cache the raw pointer but return a RefPtr<>. This will break the cyclic reference
// between SVGAnimatedProperty and SVGElement once the property pointer is not needed.
result.iterator->value = wrapper.get();
return static_pointer_cast<TearOffType>(wrapper);
}
template<typename OwnerType, typename TearOffType>
static PassRefPtr<TearOffType> lookupWrapper(OwnerType* element, const SVGPropertyInfo* info)
{
ASSERT(info);
SVGAnimatedPropertyDescription key(element, info->propertyIdentifier);
return static_cast<TearOffType*>(animatedPropertyCache()->get(key));
}
template<typename OwnerType, typename TearOffType>
static PassRefPtr<TearOffType> lookupWrapper(const OwnerType* element, const SVGPropertyInfo* info)
{
return lookupWrapper<OwnerType, TearOffType>(const_cast<OwnerType*>(element), info);
}
protected:
SVGAnimatedProperty(SVGElement*, const QualifiedName&, AnimatedPropertyType);
private:
static Cache* animatedPropertyCache();
RefPtr<SVGElement> m_contextElement;
const QualifiedName& m_attributeName;
AnimatedPropertyType m_animatedPropertyType;
protected:
bool m_isAnimating;
bool m_isReadOnly;
};
}
#endif // ENABLE(SVG)
#endif // SVGAnimatedProperty_h
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