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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 THIRD_PARTY_BLINK_RENDERER_CORE_DOM_USER_ACTION_ELEMENT_SET_H_
#define THIRD_PARTY_BLINK_RENDERER_CORE_DOM_USER_ACTION_ELEMENT_SET_H_
#include "third_party/blink/renderer/platform/heap/handle.h"
#include "third_party/blink/renderer/platform/wtf/hash_map.h"
namespace blink {
class Node;
class Element;
class UserActionElementSet final {
DISALLOW_NEW();
public:
bool IsFocused(const Node* node) { return HasFlags(node, kIsFocusedFlag); }
bool HasFocusWithin(const Node* node) {
return HasFlags(node, kHasFocusWithinFlag);
}
bool IsActive(const Node* node) { return HasFlags(node, kIsActiveFlag); }
bool IsInActiveChain(const Node* node) {
return HasFlags(node, kInActiveChainFlag);
}
bool IsDragged(const Node* node) { return HasFlags(node, kIsDraggedFlag); }
bool IsHovered(const Node* node) { return HasFlags(node, kIsHoveredFlag); }
void SetFocused(Node* node, bool enable) {
SetFlags(node, enable, kIsFocusedFlag);
}
void SetHasFocusWithin(Node* node, bool enable) {
SetFlags(node, enable, kHasFocusWithinFlag);
}
void SetActive(Node* node, bool enable) {
SetFlags(node, enable, kIsActiveFlag);
}
void SetInActiveChain(Node* node, bool enable) {
SetFlags(node, enable, kInActiveChainFlag);
}
void SetDragged(Node* node, bool enable) {
SetFlags(node, enable, kIsDraggedFlag);
}
void SetHovered(Node* node, bool enable) {
SetFlags(node, enable, kIsHoveredFlag);
}
UserActionElementSet();
~UserActionElementSet();
void DidDetach(Element&);
void Trace(Visitor*);
private:
enum ElementFlags {
kIsActiveFlag = 1,
kInActiveChainFlag = 1 << 1,
kIsHoveredFlag = 1 << 2,
kIsFocusedFlag = 1 << 3,
kIsDraggedFlag = 1 << 4,
kHasFocusWithinFlag = 1 << 5,
};
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 elements_;
};
} // namespace blink
#endif // THIRD_PARTY_BLINK_RENDERER_CORE_DOM_USER_ACTION_ELEMENT_SET_H_