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/*
* 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"
namespace blink {
class Node;
class Element;
class UserActionElementSet final {
DISALLOW_NEW();
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 isDragged(const Node* node) { return hasFlags(node, IsDraggedFlag); }
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 setDragged(Node* node, bool enable) {
setFlags(node, enable, IsDraggedFlag);
}
void setHovered(Node* node, bool enable) {
setFlags(node, enable, IsHoveredFlag);
}
UserActionElementSet();
~UserActionElementSet();
void didDetach(Element&);
DECLARE_TRACE();
private:
enum ElementFlags {
IsActiveFlag = 1,
InActiveChainFlag = 1 << 1,
IsHoveredFlag = 1 << 2,
IsFocusedFlag = 1 << 3,
IsDraggedFlag = 1 << 4,
};
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 HeapHashMap<Member<Element>, unsigned> ElementFlagMap;
ElementFlagMap m_elements;
};
} // namespace blink
#endif // UserActionElementSet_h
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