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      1 /*
      2  * Copyright (C) Research In Motion Limited 2010. All rights reserved.
      3  * Copyright (C) 2013 Samsung Electronics. All rights reserved.
      4  *
      5  * This library is free software; you can redistribute it and/or
      6  * modify it under the terms of the GNU Library General Public
      7  * License as published by the Free Software Foundation; either
      8  * version 2 of the License, or (at your option) any later version.
      9  *
     10  * This library is distributed in the hope that it will be useful,
     11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
     12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
     13  * Library General Public License for more details.
     14  *
     15  * You should have received a copy of the GNU Library General Public License
     16  * along with this library; see the file COPYING.LIB.  If not, write to
     17  * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
     18  * Boston, MA 02110-1301, USA.
     19  */
     20 
     21 #ifndef SVGAnimatedProperty_h
     22 #define SVGAnimatedProperty_h
     23 
     24 #include "core/svg/properties/SVGAnimatedPropertyDescription.h"
     25 #include "core/svg/properties/SVGPropertyInfo.h"
     26 #include "wtf/RefCounted.h"
     27 
     28 namespace WebCore {
     29 
     30 class SVGElement;
     31 
     32 class SVGAnimatedProperty : public RefCounted<SVGAnimatedProperty> {
     33 public:
     34     SVGElement* contextElement() const { return m_contextElement; }
     35     void resetContextElement() { m_contextElement = 0; }
     36     const QualifiedName& attributeName() const { return m_attributeName; }
     37     AnimatedPropertyType animatedPropertyType() const { return m_animatedPropertyType; }
     38     bool isAnimating() const { return m_isAnimating; }
     39     bool isReadOnly() const { return m_isReadOnly; }
     40     void setIsReadOnly() { m_isReadOnly = true; }
     41 
     42     void commitChange();
     43 
     44     virtual bool isAnimatedListTearOff() const { return false; }
     45 
     46     // Caching facilities.
     47     typedef HashMap<SVGAnimatedPropertyDescription, RefPtr<SVGAnimatedProperty>, SVGAnimatedPropertyDescriptionHash, SVGAnimatedPropertyDescriptionHashTraits> Cache;
     48 
     49     virtual ~SVGAnimatedProperty();
     50 
     51     template<typename OwnerType, typename TearOffType, typename PropertyType>
     52     static PassRefPtr<TearOffType> lookupOrCreateWrapper(OwnerType* element, const SVGPropertyInfo* info, PropertyType& property)
     53     {
     54         ASSERT(info);
     55         SVGAnimatedPropertyDescription key(element, info->propertyIdentifier);
     56         RefPtr<SVGAnimatedProperty> wrapper = animatedPropertyCache()->get(key);
     57         if (!wrapper) {
     58             wrapper = TearOffType::create(element, info->attributeName, info->animatedPropertyType, property);
     59             if (info->animatedPropertyState == PropertyIsReadOnly)
     60                 wrapper->setIsReadOnly();
     61             animatedPropertyCache()->set(key, wrapper);
     62         }
     63         return static_pointer_cast<TearOffType>(wrapper);
     64     }
     65 
     66     template<typename OwnerType, typename TearOffType>
     67     static TearOffType* lookupWrapper(OwnerType* element, const SVGPropertyInfo* info)
     68     {
     69         ASSERT(info);
     70         SVGAnimatedPropertyDescription key(element, info->propertyIdentifier);
     71         return static_cast<TearOffType*>(animatedPropertyCache()->get(key));
     72     }
     73 
     74     template<typename OwnerType, typename TearOffType>
     75     static TearOffType* lookupWrapper(const OwnerType* element, const SVGPropertyInfo* info)
     76     {
     77         return lookupWrapper<OwnerType, TearOffType>(const_cast<OwnerType*>(element), info);
     78     }
     79 
     80     static void detachAnimatedPropertiesForElement(SVGElement*);
     81 
     82 protected:
     83     SVGAnimatedProperty(SVGElement*, const QualifiedName&, AnimatedPropertyType);
     84 
     85 private:
     86     static Cache* animatedPropertyCache();
     87 
     88     SVGElement* m_contextElement;
     89     const QualifiedName& m_attributeName;
     90     AnimatedPropertyType m_animatedPropertyType;
     91 
     92 protected:
     93     bool m_isAnimating;
     94     bool m_isReadOnly;
     95 };
     96 
     97 }
     98 
     99 #endif // SVGAnimatedProperty_h
    100