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/*
* Copyright (C) 2013 Google Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following disclaimer
* in the documentation and/or other materials provided with the
* distribution.
* * Neither the name of Google Inc. nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef SVGProperty_h
#define SVGProperty_h
#include "core/svg/properties/SVGPropertyInfo.h"
#include "platform/heap/Handle.h"
#include "wtf/Noncopyable.h"
#include "wtf/text/WTFString.h"
namespace blink {
class SVGElement;
class SVGAnimationElement;
class SVGPropertyBase : public GarbageCollectedFinalized<SVGPropertyBase> {
WTF_MAKE_NONCOPYABLE(SVGPropertyBase);
public:
// Properties do not have a primitive type by default
typedef void PrimitiveType;
virtual ~SVGPropertyBase() {}
// FIXME: remove this in WebAnimations transition.
// This is used from SVGAnimatedNewPropertyAnimator for its animate-by-string
// implementation.
virtual SVGPropertyBase* cloneForAnimation(const String&) const = 0;
virtual String valueAsString() const = 0;
// FIXME: remove below and just have this inherit AnimatableValue in
// WebAnimations transition.
virtual void add(SVGPropertyBase*, SVGElement*) = 0;
virtual void calculateAnimatedValue(SVGAnimationElement*,
float percentage,
unsigned repeatCount,
SVGPropertyBase* from,
SVGPropertyBase* to,
SVGPropertyBase* toAtEndOfDurationValue,
SVGElement*) = 0;
virtual float calculateDistance(SVGPropertyBase* to, SVGElement*) = 0;
virtual AnimatedPropertyType type() const = 0;
SVGPropertyBase* ownerList() const { return m_ownerList; }
void setOwnerList(SVGPropertyBase* ownerList) {
// Previous owner list must be cleared before setting new owner list.
ASSERT((!ownerList && m_ownerList) || (ownerList && !m_ownerList));
m_ownerList = ownerList;
}
DEFINE_INLINE_VIRTUAL_TRACE() {}
protected:
SVGPropertyBase() : m_ownerList(nullptr) {}
private:
// Oilpan: the back reference to the owner should be a Member, but this can
// create cycles when SVG properties meet the off-heap InterpolationValue
// hierarchy. Not tracing it is safe, albeit an undesirable state of affairs.
// See http://crbug.com/528275 for the detail.
UntracedMember<SVGPropertyBase> m_ownerList;
};
#define DEFINE_SVG_PROPERTY_TYPE_CASTS(thisType) \
DEFINE_TYPE_CASTS(thisType, SVGPropertyBase, value, \
value->type() == thisType::classType(), \
value.type() == thisType::classType());
} // namespace blink
#endif // SVGProperty_h
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