root/Source/core/svg/properties/SVGPropertyTearOff.h

INCLUDED FROM

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 * modification, are permitted provided that the following conditions are
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#ifndef SVGPropertyTearOff_h
#define SVGPropertyTearOff_h

#include "core/dom/QualifiedName.h"
#include "core/svg/properties/SVGProperty.h"
#include "wtf/RefCounted.h"

namespace WebCore {

enum PropertyIsAnimValType {
    PropertyIsNotAnimVal,
    PropertyIsAnimVal
};

class SVGPropertyTearOffBase : public RefCounted<SVGPropertyTearOffBase> {
public:
    virtual ~SVGPropertyTearOffBase() { }

    PropertyIsAnimValType propertyIsAnimVal() const
    {
        return m_propertyIsAnimVal;
    }

    bool isAnimVal() const
    {
        return m_propertyIsAnimVal == PropertyIsAnimVal;
    }

    bool isReadOnlyProperty() const
    {
        return m_isReadOnlyProperty;
    }

    void setIsReadOnlyProperty()
    {
        m_isReadOnlyProperty = true;
    }

    bool isImmutable() const
    {
        return isReadOnlyProperty() || isAnimVal();
    }

    virtual void commitChange();

    SVGElement* contextElement()
    {
        return m_contextElement;
    }

    const QualifiedName& attributeName()
    {
        return m_attributeName;
    }

    virtual AnimatedPropertyType type() const = 0;

protected:
    SVGPropertyTearOffBase(SVGElement* contextElement, PropertyIsAnimValType propertyIsAnimVal, const QualifiedName& attributeName = nullQName())
        : m_contextElement(contextElement)
        , m_propertyIsAnimVal(propertyIsAnimVal)
        , m_isReadOnlyProperty(false)
        , m_attributeName(attributeName)
    {
    }

private:
    // These references are kept alive from V8 wrapper to prevent reference cycles
    SVGElement* m_contextElement;

    PropertyIsAnimValType m_propertyIsAnimVal;
    bool m_isReadOnlyProperty;
    QualifiedName m_attributeName;
};

template <typename Property>
class SVGPropertyTearOff : public SVGPropertyTearOffBase {
public:
    Property* target()
    {
        return m_target.get();
    }

    void setTarget(PassRefPtr<Property> target)
    {
        m_target = target;
    }

    virtual AnimatedPropertyType type() const OVERRIDE
    {
        return Property::classType();
    }

protected:
    SVGPropertyTearOff(PassRefPtr<Property> target, SVGElement* contextElement, PropertyIsAnimValType propertyIsAnimVal, const QualifiedName& attributeName = nullQName())
        : SVGPropertyTearOffBase(contextElement, propertyIsAnimVal, attributeName)
        , m_target(target)
    {
        ASSERT(m_target);
    }

private:
    RefPtr<Property> m_target;
};

}

#endif // SVGPropertyTearOff_h