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 #ifndef UserActionElementSet_h 28 #define UserActionElementSet_h 29 30 #include "platform/heap/Handle.h" 31 #include "wtf/HashMap.h" 32 #include "wtf/PassOwnPtr.h" 33 #include "wtf/RefPtr.h" 34 35 namespace WebCore { 36 37 class Node; 38 class Element; 39 40 class UserActionElementSet FINAL { 41 DISALLOW_ALLOCATION(); 42 public: isFocused(const Node * node)43 bool isFocused(const Node* node) { return hasFlags(node, IsFocusedFlag); } isActive(const Node * node)44 bool isActive(const Node* node) { return hasFlags(node, IsActiveFlag); } isInActiveChain(const Node * node)45 bool isInActiveChain(const Node* node) { return hasFlags(node, InActiveChainFlag); } isHovered(const Node * node)46 bool isHovered(const Node* node) { return hasFlags(node, IsHoveredFlag); } setFocused(Node * node,bool enable)47 void setFocused(Node* node, bool enable) { setFlags(node, enable, IsFocusedFlag); } setActive(Node * node,bool enable)48 void setActive(Node* node, bool enable) { setFlags(node, enable, IsActiveFlag); } setInActiveChain(Node * node,bool enable)49 void setInActiveChain(Node* node, bool enable) { setFlags(node, enable, InActiveChainFlag); } setHovered(Node * node,bool enable)50 void setHovered(Node* node, bool enable) { setFlags(node, enable, IsHoveredFlag); } 51 52 UserActionElementSet(); 53 ~UserActionElementSet(); 54 55 void didDetach(Node*); 56 57 #if !ENABLE(OILPAN) 58 void documentDidRemoveLastRef(); 59 #endif 60 61 void trace(Visitor*); 62 63 private: 64 enum ElementFlags { 65 IsActiveFlag = 1 , 66 InActiveChainFlag = 1 << 1, 67 IsHoveredFlag = 1 << 2, 68 IsFocusedFlag = 1 << 3 69 }; 70 setFlags(Node * node,bool enable,unsigned flags)71 void setFlags(Node* node, bool enable, unsigned flags) { enable ? setFlags(node, flags) : clearFlags(node, flags); } 72 void setFlags(Node*, unsigned); 73 void clearFlags(Node*, unsigned); 74 bool hasFlags(const Node*, unsigned flags) const; 75 76 void setFlags(Element*, unsigned); 77 void clearFlags(Element*, unsigned); 78 bool hasFlags(const Element*, unsigned flags) const; 79 80 typedef WillBeHeapHashMap<RefPtrWillBeMember<Element>, unsigned> ElementFlagMap; 81 ElementFlagMap m_elements; 82 }; 83 84 } // namespace 85 86 #endif // UserActionElementSet_h 87