| /* |
| * Copyright (C) 2012 Google Inc. All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions are |
| * met: |
| * |
| * * Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * * Neither the name of Google Inc. nor the names of its |
| * contributors may be used to endorse or promote products derived from |
| * this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| #ifndef UserActionElementSet_h |
| #define UserActionElementSet_h |
| |
| #include "platform/heap/Handle.h" |
| #include "wtf/HashMap.h" |
| #include "wtf/PassOwnPtr.h" |
| #include "wtf/RefPtr.h" |
| |
| namespace blink { |
| |
| class Node; |
| class Element; |
| |
| class UserActionElementSet FINAL { |
| DISALLOW_ALLOCATION(); |
| public: |
| bool isFocused(const Node* node) { return hasFlags(node, IsFocusedFlag); } |
| bool isActive(const Node* node) { return hasFlags(node, IsActiveFlag); } |
| bool isInActiveChain(const Node* node) { return hasFlags(node, InActiveChainFlag); } |
| bool isHovered(const Node* node) { return hasFlags(node, IsHoveredFlag); } |
| void setFocused(Node* node, bool enable) { setFlags(node, enable, IsFocusedFlag); } |
| void setActive(Node* node, bool enable) { setFlags(node, enable, IsActiveFlag); } |
| void setInActiveChain(Node* node, bool enable) { setFlags(node, enable, InActiveChainFlag); } |
| void setHovered(Node* node, bool enable) { setFlags(node, enable, IsHoveredFlag); } |
| |
| UserActionElementSet(); |
| ~UserActionElementSet(); |
| |
| void didDetach(Node*); |
| |
| #if !ENABLE(OILPAN) |
| void documentDidRemoveLastRef(); |
| #endif |
| |
| void trace(Visitor*); |
| |
| private: |
| enum ElementFlags { |
| IsActiveFlag = 1 , |
| InActiveChainFlag = 1 << 1, |
| IsHoveredFlag = 1 << 2, |
| IsFocusedFlag = 1 << 3 |
| }; |
| |
| void setFlags(Node* node, bool enable, unsigned flags) { enable ? setFlags(node, flags) : clearFlags(node, flags); } |
| void setFlags(Node*, unsigned); |
| void clearFlags(Node*, unsigned); |
| bool hasFlags(const Node*, unsigned flags) const; |
| |
| void setFlags(Element*, unsigned); |
| void clearFlags(Element*, unsigned); |
| bool hasFlags(const Element*, unsigned flags) const; |
| |
| typedef WillBeHeapHashMap<RefPtrWillBeMember<Element>, unsigned> ElementFlagMap; |
| ElementFlagMap m_elements; |
| }; |
| |
| } // namespace |
| |
| #endif // UserActionElementSet_h |