File indexing completed on 2024-04-28 15:24:27

 /*
     Copyright (C) 2004, 2005, 2006, 2007, 2008 Nikolas Zimmermann <zimmermann@kde.org>
                   2004, 2005 Rob Buis <buis@kde.org>
 
     This file is part of the KDE project
 
     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 <wtf/RefCounted.h>
 //#include "AtomicString.h"
 //#include "Attribute.h"
 #include <wtf/HashTraits.h>
 #include <wtf/HashMap.h>
 
 namespace WebCore
 {
 
 class FloatRect;
 class SVGAngle;
 class SVGElement;
 class SVGLength;
 class SVGLengthList;
 class SVGNumberList;
 class SVGPreserveAspectRatio;
 class SVGTransformList;
 //class String;
 //class QualifiedName;
 
 struct SVGAnimatedTypeWrapperKey {
     // Empty value
     SVGAnimatedTypeWrapperKey()
         : element(nullptr)
         , attributeName(nullptr)
     { }
 
     // 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:
     SVGAnimatedTemplate(const QualifiedName &attributeName)
         : RefCounted<SVGAnimatedTemplate<BareType> >(0)
         , m_associatedAttributeName(attributeName)
     {
     }
 
     virtual ~SVGAnimatedTemplate()
     {
         forgetWrapper(this);
     }
 
     virtual BareType baseVal() const = 0;
     virtual void setBaseVal(BareType newBaseVal) = 0;
 
     virtual BareType animVal() const = 0;
     virtual void setAnimVal(BareType newAnimVal) = 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;
     }
 
 private:
     const QualifiedName &m_associatedAttributeName;
 };
 
 template <class Type, class SVGElementSubClass>
 Type *lookupOrCreateWrapper(const SVGElementSubClass *element, const QualifiedName &domAttrName, const AtomicString &attrIdentifier)
 {
     SVGAnimatedTypeWrapperKey key(element, attrIdentifier);
     Type *wrapper = static_cast<Type *>(Type::wrapperCache()->get(key));
     if (!wrapper) {
         wrapper = new Type(element, domAttrName);
         Type::wrapperCache()->set(key, wrapper);
     }
     return wrapper;
 }
 
 // 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