1/*
2 * Copyright (C) 2007 Apple Inc. All rights reserved.
3 * Copyright (C) 2007 David Smith (catfish.man@gmail.com)
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 *
9 * 1.  Redistributions of source code must retain the above copyright
10 *     notice, this list of conditions and the following disclaimer.
11 * 2.  Redistributions in binary form must reproduce the above copyright
12 *     notice, this list of conditions and the following disclaimer in the
13 *     documentation and/or other materials provided with the distribution.
14 * 3.  Neither the name of Apple Computer, Inc. ("Apple") nor the names of
15 *     its contributors may be used to endorse or promote products derived
16 *     from this software without specific prior written permission.
17 *
18 * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
19 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
20 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
21 * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
22 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
23 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
24 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
25 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
26 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
27 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28 */
29
30#ifndef ClassCollection_h
31#define ClassCollection_h
32
33#include "core/dom/Element.h"
34#include "core/dom/SpaceSplitString.h"
35#include "core/html/HTMLCollection.h"
36
37namespace blink {
38
39class ClassCollection FINAL : public HTMLCollection {
40public:
41    // classNames argument is an AtomicString because it is common for Elements to share the same class names.
42    // It is also used to construct a SpaceSplitString (m_classNames) and its constructor requires an AtomicString.
43    static PassRefPtrWillBeRawPtr<ClassCollection> create(ContainerNode& rootNode, CollectionType type, const AtomicString& classNames)
44    {
45        ASSERT_UNUSED(type, type == ClassCollectionType);
46        return adoptRefWillBeNoop(new ClassCollection(rootNode, classNames));
47    }
48
49    virtual ~ClassCollection();
50
51    bool elementMatches(const Element&) const;
52
53private:
54    ClassCollection(ContainerNode& rootNode, const AtomicString& classNames);
55
56    SpaceSplitString m_classNames;
57    AtomicString m_originalClassNames;
58};
59
60DEFINE_TYPE_CASTS(ClassCollection, LiveNodeListBase, collection, collection->type() == ClassCollectionType, collection.type() == ClassCollectionType);
61
62inline bool ClassCollection::elementMatches(const Element& testElement) const
63{
64    if (!testElement.hasClass())
65        return false;
66    if (!m_classNames.size())
67        return false;
68    return testElement.classNames().containsAll(m_classNames);
69}
70
71} // namespace blink
72
73#endif // ClassCollection_h
74