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/*
Copyright (C) 2004, 2005, 2006, 2007, 2008 Nikolas Zimmermann <zimmermann@kde.org>
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 "AtomicString.h"
#include "FloatRect.h"
#include "SVGLength.h"
#include <wtf/HashMap.h>
namespace WebCore {
class SVGAngle;
class SVGElement;
class SVGLengthList;
class SVGNumberList;
class SVGPreserveAspectRatio;
class SVGTransformList;
class String;
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 BareType>
class SVGAnimatedTemplate : public RefCounted<SVGAnimatedTemplate<BareType> > {
public:
virtual ~SVGAnimatedTemplate() { forgetWrapper(this); }
virtual BareType baseVal() const = 0;
virtual void setBaseVal(BareType) = 0;
virtual BareType animVal() const = 0;
virtual void setAnimVal(BareType) = 0;
typedef HashMap<SVGAnimatedTypeWrapperKey, SVGAnimatedTemplate<BareType>*, 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<BareType>* 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;
}
}
}
const QualifiedName& associatedAttributeName() const { return m_associatedAttributeName; }
protected:
SVGAnimatedTemplate(const QualifiedName& attributeName)
: m_associatedAttributeName(attributeName)
{
}
private:
const QualifiedName& m_associatedAttributeName;
};
template<typename OwnerTypeArg, typename AnimatedTypeArg, const char* TagName, const char* PropertyName>
class SVGAnimatedProperty;
template<typename OwnerType, typename AnimatedType, const char* TagName, const char* PropertyName, typename Type, typename OwnerElement>
PassRefPtr<Type> lookupOrCreateWrapper(const SVGAnimatedProperty<OwnerType, AnimatedType, TagName, PropertyName>& creator,
const OwnerElement* element, const QualifiedName& attrName, const AtomicString& attrIdentifier)
{
SVGAnimatedTypeWrapperKey key(element, attrIdentifier);
RefPtr<Type> wrapper = static_cast<Type*>(Type::wrapperCache()->get(key));
if (!wrapper) {
wrapper = Type::create(creator, element, attrName);
element->propertyController().setPropertyNeedsSynchronization(attrName);
Type::wrapperCache()->set(key, wrapper.get());
}
return wrapper.release();
}
// Default implementation for pointer types
template<typename Type>
struct SVGAnimatedTypeValue : Noncopyable {
typedef RefPtr<Type> StorableType;
typedef Type* DecoratedType;
static Type null() { return 0; }
static AtomicString toString(Type type) { return type ? AtomicString(type->valueAsString()) : nullAtom; }
};
template<>
struct SVGAnimatedTypeValue<bool> : Noncopyable {
typedef bool StorableType;
typedef bool DecoratedType;
static bool null() { return false; }
static AtomicString toString(bool type) { return type ? "true" : "false"; }
};
template<>
struct SVGAnimatedTypeValue<int> : Noncopyable {
typedef int StorableType;
typedef int DecoratedType;
static int null() { return 0; }
static AtomicString toString(int type) { return String::number(type); }
};
template<>
struct SVGAnimatedTypeValue<long> : Noncopyable {
typedef long StorableType;
typedef long DecoratedType;
static long null() { return 0l; }
static AtomicString toString(long type) { return String::number(type); }
};
template<>
struct SVGAnimatedTypeValue<SVGLength> : Noncopyable {
typedef SVGLength StorableType;
typedef SVGLength DecoratedType;
static SVGLength null() { return SVGLength(); }
static AtomicString toString(const SVGLength& type) { return type.valueAsString(); }
};
template<>
struct SVGAnimatedTypeValue<float> : Noncopyable {
typedef float StorableType;
typedef float DecoratedType;
static float null() { return 0.0f; }
static AtomicString toString(float type) { return String::number(type); }
};
template<>
struct SVGAnimatedTypeValue<FloatRect> : Noncopyable {
typedef FloatRect StorableType;
typedef FloatRect DecoratedType;
static FloatRect null() { return FloatRect(); }
static AtomicString toString(const FloatRect& type) { return String::format("%f %f %f %f", type.x(), type.y(), type.width(), type.height()); }
};
template<>
struct SVGAnimatedTypeValue<String> : Noncopyable {
typedef String StorableType;
typedef String DecoratedType;
static String null() { return String(); }
static AtomicString toString(const String& type) { return type; }
};
// 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 // ENABLE(SVG)
#endif // SVGAnimatedTemplate_h
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