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/*
* Copyright (C) 2004, 2005, 2006, 2007, 2008 Nikolas Zimmermann <zimmermann@kde.org>
* Copyright (C) 2004, 2005 Rob Buis <buis@kde.org>
* Copyright (C) Research In Motion Limited 2010. All rights reserved.
*
* 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 SVGAnimatedPropertyDescription_h
#define SVGAnimatedPropertyDescription_h
#if ENABLE(SVG)
#include <wtf/HashMap.h>
#include <wtf/text/AtomicString.h>
namespace WebCore {
class SVGElement;
struct SVGAnimatedPropertyDescription {
// Empty value
SVGAnimatedPropertyDescription()
: m_element(0)
, m_attributeName(0)
{
}
// Deleted value
SVGAnimatedPropertyDescription(WTF::HashTableDeletedValueType)
: m_element(reinterpret_cast<SVGElement*>(-1))
{
}
bool isHashTableDeletedValue() const
{
return m_element == reinterpret_cast<SVGElement*>(-1);
}
SVGAnimatedPropertyDescription(SVGElement* element, const AtomicString& attributeName)
: m_element(element)
, m_attributeName(attributeName.impl())
{
ASSERT(m_element);
ASSERT(m_attributeName);
}
bool operator==(const SVGAnimatedPropertyDescription& other) const
{
return m_element == other.m_element && m_attributeName == other.m_attributeName;
}
SVGElement* m_element;
AtomicStringImpl* m_attributeName;
};
struct SVGAnimatedPropertyDescriptionHash {
static unsigned hash(const SVGAnimatedPropertyDescription& key)
{
return WTF::StringHasher::createBlobHash<sizeof(SVGAnimatedPropertyDescription)>(&key);
}
static bool equal(const SVGAnimatedPropertyDescription& a, const SVGAnimatedPropertyDescription& b)
{
return a == b;
}
static const bool safeToCompareToEmptyOrDeleted = true;
};
struct SVGAnimatedPropertyDescriptionHashTraits : WTF::GenericHashTraits<SVGAnimatedPropertyDescription> {
static const bool emptyValueIsZero = true;
static void constructDeletedValue(SVGAnimatedPropertyDescription& slot)
{
new (&slot) SVGAnimatedPropertyDescription(WTF::HashTableDeletedValue);
}
static bool isDeletedValue(const SVGAnimatedPropertyDescription& value)
{
return value.isHashTableDeletedValue();
}
};
}
#endif // ENABLE(SVG)
#endif // SVGAnimatedPropertyDescription_h
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