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