Torne (Richard Coles) | 926b001 | 2013-03-28 15:32:48 +0000 | [diff] [blame] | 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 | |
Ben Murdoch | 591b958 | 2013-07-10 11:41:44 +0100 | [diff] [blame] | 30 | #include "wtf/HashMap.h" |
| 31 | #include "wtf/PassOwnPtr.h" |
| 32 | #include "wtf/RefPtr.h" |
Torne (Richard Coles) | 926b001 | 2013-03-28 15:32:48 +0000 | [diff] [blame] | 33 | |
| 34 | namespace WebCore { |
| 35 | |
| 36 | class Node; |
| 37 | class Element; |
| 38 | |
| 39 | class UserActionElementSet { |
| 40 | public: |
| 41 | static PassOwnPtr<UserActionElementSet> create() { return adoptPtr(new UserActionElementSet()); } |
| 42 | |
| 43 | bool isFocused(const Node* node) { return hasFlags(node, IsFocusedFlag); } |
| 44 | bool isActive(const Node* node) { return hasFlags(node, IsActiveFlag); } |
| 45 | bool isInActiveChain(const Node* node) { return hasFlags(node, InActiveChainFlag); } |
| 46 | bool isHovered(const Node* node) { return hasFlags(node, IsHoveredFlag); } |
| 47 | void setFocused(Node* node, bool enable) { setFlags(node, enable, IsFocusedFlag); } |
| 48 | void setActive(Node* node, bool enable) { setFlags(node, enable, IsActiveFlag); } |
| 49 | void setInActiveChain(Node* node, bool enable) { setFlags(node, enable, InActiveChainFlag); } |
| 50 | void setHovered(Node* node, bool enable) { setFlags(node, enable, IsHoveredFlag); } |
| 51 | |
| 52 | UserActionElementSet(); |
| 53 | ~UserActionElementSet(); |
| 54 | |
| 55 | void didDetach(Node*); |
| 56 | void documentDidRemoveLastRef(); |
| 57 | |
| 58 | private: |
| 59 | enum ElementFlags { |
| 60 | IsActiveFlag = 1 , |
| 61 | InActiveChainFlag = 1 << 1, |
| 62 | IsHoveredFlag = 1 << 2, |
| 63 | IsFocusedFlag = 1 << 3 |
| 64 | }; |
| 65 | |
| 66 | void setFlags(Node* node, bool enable, unsigned flags) { enable ? setFlags(node, flags) : clearFlags(node, flags); } |
| 67 | void setFlags(Node*, unsigned); |
| 68 | void clearFlags(Node*, unsigned); |
| 69 | bool hasFlags(const Node*, unsigned flags) const; |
| 70 | |
| 71 | void setFlags(Element*, unsigned); |
| 72 | void clearFlags(Element*, unsigned); |
| 73 | bool hasFlags(const Element*, unsigned flags) const; |
| 74 | |
| 75 | typedef HashMap<RefPtr<Element>, unsigned> ElementFlagMap; |
| 76 | ElementFlagMap m_elements; |
| 77 | }; |
| 78 | |
| 79 | } // namespace |
| 80 | |
| 81 | #endif // UserActionElementSet_h |