1/*
2 * Copyright (C) 2004, 2005, 2006, 2007, 2008 Nikolas Zimmermann <zimmermann@kde.org>
3 * Copyright (C) 2004, 2005 Rob Buis <buis@kde.org>
4 * Copyright (C) Research In Motion Limited 2010. All rights reserved.
5 *
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Library General Public
8 * License as published by the Free Software Foundation; either
9 * version 2 of the License, or (at your option) any later version.
10 *
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
14 * Library General Public License for more details.
15 *
16 * You should have received a copy of the GNU Library General Public License
17 * along with this library; see the file COPYING.LIB.  If not, write to
18 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
19 * Boston, MA 02110-1301, USA.
20 */
21
22#ifndef SVGAnimatedPropertyDescription_h
23#define SVGAnimatedPropertyDescription_h
24
25#if ENABLE(SVG)
26#include <wtf/HashMap.h>
27#include <wtf/text/AtomicString.h>
28
29namespace WebCore {
30
31class SVGElement;
32
33struct SVGAnimatedPropertyDescription {
34    // Empty value
35    SVGAnimatedPropertyDescription()
36        : m_element(0)
37        , m_attributeName(0)
38    {
39    }
40
41    // Deleted value
42    SVGAnimatedPropertyDescription(WTF::HashTableDeletedValueType)
43        : m_element(reinterpret_cast<SVGElement*>(-1))
44    {
45    }
46
47    bool isHashTableDeletedValue() const
48    {
49        return m_element == reinterpret_cast<SVGElement*>(-1);
50    }
51
52    SVGAnimatedPropertyDescription(SVGElement* element, const AtomicString& attributeName)
53        : m_element(element)
54        , m_attributeName(attributeName.impl())
55    {
56        ASSERT(m_element);
57        ASSERT(m_attributeName);
58    }
59
60    bool operator==(const SVGAnimatedPropertyDescription& other) const
61    {
62        return m_element == other.m_element && m_attributeName == other.m_attributeName;
63    }
64
65    SVGElement* m_element;
66    AtomicStringImpl* m_attributeName;
67};
68
69struct SVGAnimatedPropertyDescriptionHash {
70    static unsigned hash(const SVGAnimatedPropertyDescription& key)
71    {
72        return StringHasher::hashMemory<sizeof(SVGAnimatedPropertyDescription)>(&key);
73    }
74
75    static bool equal(const SVGAnimatedPropertyDescription& a, const SVGAnimatedPropertyDescription& b)
76    {
77        return a == b;
78    }
79
80    static const bool safeToCompareToEmptyOrDeleted = true;
81};
82
83struct SVGAnimatedPropertyDescriptionHashTraits : WTF::SimpleClassHashTraits<SVGAnimatedPropertyDescription> { };
84
85}
86
87#endif // ENABLE(SVG)
88#endif // SVGAnimatedPropertyDescription_h
89