1/* 2 * Copyright (C) 2013 Samsung Electronics. 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 ParentNode_h 32#define ParentNode_h 33 34#include "core/dom/ContainerNode.h" 35#include "core/dom/ElementTraversal.h" 36#include "platform/heap/Handle.h" 37 38namespace blink { 39 40class ParentNode { 41public: 42 static PassRefPtrWillBeRawPtr<HTMLCollection> children(ContainerNode& node) 43 { 44 return node.children(); 45 } 46 47 static Element* firstElementChild(ContainerNode& node) 48 { 49 return ElementTraversal::firstChild(node); 50 } 51 52 static Element* lastElementChild(ContainerNode& node) 53 { 54 return ElementTraversal::lastChild(node); 55 } 56 57 static unsigned childElementCount(ContainerNode& node) 58 { 59 unsigned count = 0; 60 for (Element* child = ElementTraversal::firstChild(node); child; child = ElementTraversal::nextSibling(*child)) 61 ++count; 62 return count; 63 } 64 65 static PassRefPtrWillBeRawPtr<Element> querySelector(ContainerNode& node, const AtomicString& selectors, ExceptionState& exceptionState) 66 { 67 return node.querySelector(selectors, exceptionState); 68 } 69 70 static PassRefPtrWillBeRawPtr<StaticElementList> querySelectorAll(ContainerNode& node, const AtomicString& selectors, ExceptionState& exceptionState) 71 { 72 return node.querySelectorAll(selectors, exceptionState); 73 } 74}; 75 76} // namespace blink 77 78#endif // ParentNode_h 79