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/*
* Copyright (C) 2014 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 SVGPathSegList_h
#define SVGPathSegList_h
#include "core/svg/SVGPathByteStream.h"
#include "core/svg/SVGPathSeg.h"
#include "core/svg/properties/SVGAnimatedProperty.h"
#include "core/svg/properties/SVGListPropertyHelper.h"
#include "wtf/WeakPtr.h"
namespace WebCore {
class SVGPathElement;
class SVGPathSegListTearOff;
class SVGPathSegList : public SVGListPropertyHelper<SVGPathSegList, SVGPathSeg> {
public:
typedef void PrimitiveType;
typedef SVGPathSeg ItemPropertyType;
typedef SVGPathSegListTearOff TearOffType;
typedef SVGListPropertyHelper<SVGPathSegList, SVGPathSeg> Base;
static PassRefPtr<SVGPathSegList> create(SVGPathElement* contextElement, SVGPathSegRole role = PathSegUndefinedRole)
{
return adoptRef(new SVGPathSegList(contextElement, role));
}
virtual ~SVGPathSegList();
const SVGPathByteStream* byteStream() const;
void clearByteStream() { m_byteStream.clear(); }
// SVGListPropertyHelper methods with |m_byteStream| sync:
ItemPropertyType* at(size_t index)
{
updateListFromByteStream();
return Base::at(index);
}
size_t length()
{
updateListFromByteStream();
return Base::length();
}
bool isEmpty() const
{
if (m_listSyncedToByteStream)
return Base::isEmpty();
return !m_byteStream || m_byteStream->isEmpty();
}
void clear()
{
clearByteStream();
Base::clear();
}
void append(PassRefPtr<ItemPropertyType> passNewItem)
{
updateListFromByteStream();
clearByteStream();
Base::append(passNewItem);
}
PassRefPtr<ItemPropertyType> initialize(PassRefPtr<ItemPropertyType> passItem)
{
clearByteStream();
return Base::initialize(passItem);
}
PassRefPtr<ItemPropertyType> getItem(size_t index, ExceptionState& exceptionState)
{
updateListFromByteStream();
return Base::getItem(index, exceptionState);
}
PassRefPtr<ItemPropertyType> insertItemBefore(PassRefPtr<ItemPropertyType> passItem, size_t index)
{
updateListFromByteStream();
clearByteStream();
return Base::insertItemBefore(passItem, index);
}
PassRefPtr<ItemPropertyType> replaceItem(PassRefPtr<ItemPropertyType> passItem, size_t index, ExceptionState& exceptionState)
{
updateListFromByteStream();
clearByteStream();
return Base::replaceItem(passItem, index, exceptionState);
}
PassRefPtr<ItemPropertyType> removeItem(size_t index, ExceptionState& exceptionState)
{
updateListFromByteStream();
clearByteStream();
return Base::removeItem(index, exceptionState);
}
PassRefPtr<ItemPropertyType> appendItem(PassRefPtr<ItemPropertyType> passItem);
// SVGPropertyBase:
PassRefPtr<SVGPathSegList> clone();
virtual PassRefPtr<SVGPropertyBase> cloneForAnimation(const String&) const OVERRIDE;
virtual String valueAsString() const OVERRIDE;
void setValueAsString(const String&, ExceptionState&);
virtual void add(PassRefPtrWillBeRawPtr<SVGPropertyBase>, SVGElement*) OVERRIDE;
virtual void calculateAnimatedValue(SVGAnimationElement*, float percentage, unsigned repeatCount, PassRefPtr<SVGPropertyBase> fromValue, PassRefPtr<SVGPropertyBase> toValue, PassRefPtr<SVGPropertyBase> toAtEndOfDurationValue, SVGElement*) OVERRIDE;
virtual float calculateDistance(PassRefPtr<SVGPropertyBase> to, SVGElement*) OVERRIDE;
static AnimatedPropertyType classType() { return AnimatedPath; }
private:
SVGPathSegList(SVGPathElement*, SVGPathSegRole);
SVGPathSegList(SVGPathElement*, SVGPathSegRole, PassOwnPtr<SVGPathByteStream>);
friend class SVGPathSegListBuilder;
// This is only to be called from SVGPathSegListBuilder.
void appendWithoutByteStreamSync(PassRefPtr<ItemPropertyType> passNewItem)
{
Base::append(passNewItem);
}
void updateListFromByteStream();
void invalidateList();
// FIXME: This pointer should be removed after SVGPathSeg has a tear-off.
// FIXME: oilpan: This is raw-ptr to avoid reference cycles.
// SVGPathSegList is either owned by SVGAnimatedPath or
// SVGPathSegListTearOff. Both keep |contextElement| alive,
// so this ptr is always valid.
SVGPathElement* m_contextElement;
SVGPathSegRole m_role;
mutable OwnPtr<SVGPathByteStream> m_byteStream;
bool m_listSyncedToByteStream;
};
inline PassRefPtr<SVGPathSegList> toSVGPathSegList(PassRefPtr<SVGPropertyBase> passBase)
{
RefPtr<SVGPropertyBase> base = passBase;
ASSERT(base->type() == SVGPathSegList::classType());
return static_pointer_cast<SVGPathSegList>(base.release());
}
} // namespace WebCore
#endif
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