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 blink { 38 39 class HTMLContentElement FINAL : public InsertionPoint { 40 DEFINE_WRAPPERTYPEINFO(); 41 public: 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 52 private: 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 68 inline const CSSSelectorList& HTMLContentElement::selectorList() const 69 { 70 if (m_shouldParseSelect) 71 const_cast<HTMLContentElement*>(this)->parseSelect(); 72 return m_selectorList; 73 } 74 75 inline bool HTMLContentElement::isSelectValid() const 76 { 77 if (m_shouldParseSelect) 78 const_cast<HTMLContentElement*>(this)->parseSelect(); 79 return m_isValidSelector; 80 } 81 82 inline 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
