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
37 namespace WebCore {
38
39 class HTMLContentElement FINAL : public InsertionPoint {
40 public:
41 DECLARE_NODE_FACTORY(HTMLContentElement);
42 virtual ~HTMLContentElement();
43
canAffectSelector()44 virtual bool canAffectSelector() const OVERRIDE { return true; }
45
46 bool canSelectNode(const WillBeHeapVector<RawPtrWillBeMember<Node>, 32>& siblings, int nth) const;
47
48 const CSSSelectorList& selectorList() const;
49 bool isSelectValid() const;
50
51 private:
52 explicit HTMLContentElement(Document&);
53
54 virtual void parseAttribute(const QualifiedName&, const AtomicString&) OVERRIDE;
55
56 bool validateSelect() const;
57 void parseSelect();
58
59 bool matchSelector(const WillBeHeapVector<RawPtrWillBeMember<Node>, 32>& siblings, int nth) const;
60
61 bool m_shouldParseSelect;
62 bool m_isValidSelector;
63 AtomicString m_select;
64 CSSSelectorList m_selectorList;
65 };
66
selectorList()67 inline const CSSSelectorList& HTMLContentElement::selectorList() const
68 {
69 if (m_shouldParseSelect)
70 const_cast<HTMLContentElement*>(this)->parseSelect();
71 return m_selectorList;
72 }
73
isSelectValid()74 inline bool HTMLContentElement::isSelectValid() const
75 {
76 if (m_shouldParseSelect)
77 const_cast<HTMLContentElement*>(this)->parseSelect();
78 return m_isValidSelector;
79 }
80
canSelectNode(const WillBeHeapVector<RawPtrWillBeMember<Node>,32> & siblings,int nth)81 inline bool HTMLContentElement::canSelectNode(const WillBeHeapVector<RawPtrWillBeMember<Node>, 32>& siblings, int nth) const
82 {
83 if (m_select.isNull() || m_select.isEmpty())
84 return true;
85 if (!isSelectValid())
86 return false;
87 if (!siblings[nth]->isElementNode())
88 return false;
89 return matchSelector(siblings, nth);
90 }
91
92 }
93
94 #endif
95