1/*
2 * Copyright (C) 2011 Google Inc. All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions are
6 * met:
7 *
8 *     * Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 *     * Redistributions in binary form must reproduce the above
11 * copyright notice, this list of conditions and the following disclaimer
12 * in the documentation and/or other materials provided with the
13 * distribution.
14 *     * Neither the name of Google Inc. nor the names of its
15 * contributors may be used to endorse or promote products derived from
16 * this software without specific prior written permission.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
19 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
20 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
21 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
22 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
23 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
24 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
28 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29 */
30
31#ifndef HTMLContentElement_h
32#define HTMLContentElement_h
33
34#include "core/css/CSSSelectorList.h"
35#include "core/dom/shadow/InsertionPoint.h"
36
37namespace blink {
38
39class HTMLContentElement FINAL : public InsertionPoint {
40    DEFINE_WRAPPERTYPEINFO();
41public:
42    DECLARE_NODE_FACTORY(HTMLContentElement);
43    virtual ~HTMLContentElement();
44
45    virtual bool canAffectSelector() const OVERRIDE { return true; }
46
47    bool canSelectNode(const WillBeHeapVector<RawPtrWillBeMember<Node>, 32>& siblings, int nth) const;
48
49    const CSSSelectorList& selectorList() const;
50    bool isSelectValid() const;
51
52private:
53    explicit HTMLContentElement(Document&);
54
55    virtual void parseAttribute(const QualifiedName&, const AtomicString&) OVERRIDE;
56
57    bool validateSelect() const;
58    void parseSelect();
59
60    bool matchSelector(const WillBeHeapVector<RawPtrWillBeMember<Node>, 32>& siblings, int nth) const;
61
62    bool m_shouldParseSelect;
63    bool m_isValidSelector;
64    AtomicString m_select;
65    CSSSelectorList m_selectorList;
66};
67
68inline const CSSSelectorList& HTMLContentElement::selectorList() const
69{
70    if (m_shouldParseSelect)
71        const_cast<HTMLContentElement*>(this)->parseSelect();
72    return m_selectorList;
73}
74
75inline bool HTMLContentElement::isSelectValid() const
76{
77    if (m_shouldParseSelect)
78        const_cast<HTMLContentElement*>(this)->parseSelect();
79    return m_isValidSelector;
80}
81
82inline bool HTMLContentElement::canSelectNode(const WillBeHeapVector<RawPtrWillBeMember<Node>, 32>& siblings, int nth) const
83{
84    if (m_select.isNull() || m_select.isEmpty())
85        return true;
86    if (!isSelectValid())
87        return false;
88    if (!siblings[nth]->isElementNode())
89        return false;
90    return matchSelector(siblings, nth);
91}
92
93} // namespace blink
94
95#endif // HTMLContentElement_h
96