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/*
* Copyright (C) 2004, 2005, 2006, 2007, 2008 Nikolas Zimmermann <zimmermann@kde.org>
* Copyright (C) 2004, 2005 Rob Buis <buis@kde.org>
*
* 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 SVGAnimatedTemplate_h
#define SVGAnimatedTemplate_h
#if ENABLE(SVG)
#include "SVGAnimatedPropertyTraits.h"
#include <wtf/Forward.h>
#include <wtf/HashMap.h>
namespace WebCore {
class SVGAngle;
class SVGElement;
class SVGLengthList;
class SVGNumberList;
class SVGPreserveAspectRatio;
class SVGTransformList;
class QualifiedName;
struct SVGAnimatedTypeWrapperKey {
// Empty value
SVGAnimatedTypeWrapperKey()
: element(0)
, attributeName(0)
{ }
// Deleted value
SVGAnimatedTypeWrapperKey(WTF::HashTableDeletedValueType)
: element(reinterpret_cast<SVGElement*>(-1))
{
}
bool isHashTableDeletedValue() const
{
return element == reinterpret_cast<SVGElement*>(-1);
}
SVGAnimatedTypeWrapperKey(const SVGElement* _element, const AtomicString& _attributeName)
: element(_element)
, attributeName(_attributeName.impl())
{
ASSERT(element);
ASSERT(attributeName);
}
bool operator==(const SVGAnimatedTypeWrapperKey& other) const
{
return element == other.element && attributeName == other.attributeName;
}
const SVGElement* element;
AtomicStringImpl* attributeName;
};
struct SVGAnimatedTypeWrapperKeyHash {
static unsigned hash(const SVGAnimatedTypeWrapperKey& key)
{
return StringImpl::computeHash(reinterpret_cast<const UChar*>(&key), sizeof(SVGAnimatedTypeWrapperKey) / sizeof(UChar));
}
static bool equal(const SVGAnimatedTypeWrapperKey& a, const SVGAnimatedTypeWrapperKey& b)
{
return a == b;
}
static const bool safeToCompareToEmptyOrDeleted = true;
};
struct SVGAnimatedTypeWrapperKeyHashTraits : WTF::GenericHashTraits<SVGAnimatedTypeWrapperKey> {
static const bool emptyValueIsZero = true;
static void constructDeletedValue(SVGAnimatedTypeWrapperKey& slot)
{
new (&slot) SVGAnimatedTypeWrapperKey(WTF::HashTableDeletedValue);
}
static bool isDeletedValue(const SVGAnimatedTypeWrapperKey& value)
{
return value.isHashTableDeletedValue();
}
};
template<typename AnimatedType>
class SVGAnimatedTemplate : public RefCounted<SVGAnimatedTemplate<AnimatedType> > {
public:
typedef typename SVGAnimatedPropertyTraits<AnimatedType>::PassType PassType;
typedef typename SVGAnimatedPropertyTraits<AnimatedType>::ReturnType ReturnType;
virtual ~SVGAnimatedTemplate() { forgetWrapper(this); }
virtual ReturnType baseVal() const = 0;
virtual void setBaseVal(PassType) = 0;
virtual ReturnType animVal() const = 0;
virtual void setAnimVal(PassType) = 0;
virtual const QualifiedName& associatedAttributeName() const = 0;
typedef HashMap<SVGAnimatedTypeWrapperKey, SVGAnimatedTemplate<AnimatedType>*, SVGAnimatedTypeWrapperKeyHash, SVGAnimatedTypeWrapperKeyHashTraits > ElementToWrapperMap;
typedef typename ElementToWrapperMap::const_iterator ElementToWrapperMapIterator;
static ElementToWrapperMap* wrapperCache()
{
static ElementToWrapperMap* s_wrapperCache = new ElementToWrapperMap;
return s_wrapperCache;
}
static void forgetWrapper(SVGAnimatedTemplate<AnimatedType>* wrapper)
{
ElementToWrapperMap* cache = wrapperCache();
ElementToWrapperMapIterator itr = cache->begin();
ElementToWrapperMapIterator end = cache->end();
for (; itr != end; ++itr) {
if (itr->second == wrapper) {
cache->remove(itr->first);
break;
}
}
}
};
template<typename AnimatedType>
class SVGAnimatedProperty;
template<typename AnimatedType, typename AnimatedTearOff>
PassRefPtr<AnimatedTearOff> lookupOrCreateWrapper(SVGElement* element, SVGAnimatedProperty<AnimatedType>& creator, const QualifiedName& attrName)
{
SVGAnimatedTypeWrapperKey key(element, attrName.localName());
RefPtr<AnimatedTearOff> wrapper = static_cast<AnimatedTearOff*>(AnimatedTearOff::wrapperCache()->get(key));
if (!wrapper) {
wrapper = AnimatedTearOff::create(creator, element);
AnimatedTearOff::wrapperCache()->set(key, wrapper.get());
}
return wrapper.release();
}
// Common type definitions, to ease IDL generation.
typedef SVGAnimatedTemplate<SVGAngle> SVGAnimatedAngle;
typedef SVGAnimatedTemplate<bool> SVGAnimatedBoolean;
typedef SVGAnimatedTemplate<int> SVGAnimatedEnumeration;
typedef SVGAnimatedTemplate<long> SVGAnimatedInteger;
typedef SVGAnimatedTemplate<SVGLength> SVGAnimatedLength;
typedef SVGAnimatedTemplate<SVGLengthList*> SVGAnimatedLengthList;
typedef SVGAnimatedTemplate<float> SVGAnimatedNumber;
typedef SVGAnimatedTemplate<SVGNumberList*> SVGAnimatedNumberList;
typedef SVGAnimatedTemplate<SVGPreserveAspectRatio> SVGAnimatedPreserveAspectRatio;
typedef SVGAnimatedTemplate<FloatRect> SVGAnimatedRect;
typedef SVGAnimatedTemplate<String> SVGAnimatedString;
typedef SVGAnimatedTemplate<SVGTransformList*> SVGAnimatedTransformList;
}
#endif
#endif
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