1/* 2 * Copyright (C) 2012 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 * * Neither the name of Google Inc. nor the names of its 11 * contributors may be used to endorse or promote products derived from 12 * this software without specific prior written permission. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 15 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 16 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 17 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 18 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 19 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 20 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 24 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 25 */ 26 27#include "config.h" 28#include "core/dom/UserActionElementSet.h" 29 30#include "core/dom/Element.h" 31#include "core/dom/Node.h" 32 33namespace WebCore { 34 35UserActionElementSet::UserActionElementSet() 36{ 37} 38 39UserActionElementSet::~UserActionElementSet() 40{ 41} 42 43void UserActionElementSet::didDetach(Node* node) 44{ 45 ASSERT(node->isUserActionElement()); 46 clearFlags(toElement(node), IsActiveFlag | InActiveChainFlag | IsHoveredFlag); 47} 48 49void UserActionElementSet::documentDidRemoveLastRef() 50{ 51 m_elements.clear(); 52} 53 54bool UserActionElementSet::hasFlags(const Node* node, unsigned flags) const 55{ 56 ASSERT(node->isUserActionElement() && node->isElementNode()); 57 return hasFlags(toElement(node), flags); 58} 59 60void UserActionElementSet::setFlags(Node* node, unsigned flags) 61{ 62 if (!node->isElementNode()) 63 return; 64 return setFlags(toElement(node), flags); 65} 66 67void UserActionElementSet::clearFlags(Node* node, unsigned flags) 68{ 69 if (!node->isElementNode()) 70 return; 71 return clearFlags(toElement(node), flags); 72} 73 74inline bool UserActionElementSet::hasFlags(const Element* element, unsigned flags) const 75{ 76 ASSERT(element->isUserActionElement()); 77 ElementFlagMap::const_iterator found = m_elements.find(const_cast<Element*>(element)); 78 if (found == m_elements.end()) 79 return false; 80 return found->value & flags; 81} 82 83inline void UserActionElementSet::clearFlags(Element* element, unsigned flags) 84{ 85 if (!element->isUserActionElement()) { 86 ASSERT(m_elements.end() == m_elements.find(element)); 87 return; 88 } 89 90 ElementFlagMap::iterator found = m_elements.find(element); 91 if (found == m_elements.end()) { 92 element->setUserActionElement(false); 93 return; 94 } 95 96 unsigned updated = found->value & ~flags; 97 if (!updated) { 98 element->setUserActionElement(false); 99 m_elements.remove(found); 100 return; 101 } 102 103 found->value = updated; 104} 105 106inline void UserActionElementSet::setFlags(Element* element, unsigned flags) 107{ 108 ElementFlagMap::iterator result = m_elements.find(element); 109 if (result != m_elements.end()) { 110 ASSERT(element->isUserActionElement()); 111 result->value |= flags; 112 return; 113 } 114 115 element->setUserActionElement(true); 116 m_elements.add(element, flags); 117} 118 119} 120