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/*
* Copyright (C) 2012 Google Inc. All rights reserved.
* Copyright (C) 2013-2017 Apple 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.
*/
#pragma once
#include <wtf/Forward.h>
#include <wtf/OptionSet.h>
#include <wtf/Ref.h>
#include <wtf/WeakHashMap.h>
namespace WebCore {
class Element;
class WeakPtrImplWithEventTargetData;
class UserActionElementSet {
public:
bool isActive(const Element& element) { return hasFlag(element, Flag::IsActive); }
bool isFocused(const Element& element) { return hasFlag(element, Flag::IsFocused); }
bool isHovered(const Element& element) { return hasFlag(element, Flag::IsHovered); }
bool isInActiveChain(const Element& element) { return hasFlag(element, Flag::InActiveChain); }
bool isBeingDragged(const Element& element) { return hasFlag(element, Flag::IsBeingDragged); }
bool hasFocusVisible(const Element& element) { return hasFlag(element, Flag::HasFocusVisible); }
bool hasFocusWithin(const Element& element) { return hasFlag(element, Flag::HasFocusWithin); }
void setActive(Element& element, bool enable) { setFlags(element, enable, Flag::IsActive); }
void setFocused(Element& element, bool enable) { setFlags(element, enable, Flag::IsFocused); }
void setHovered(Element& element, bool enable) { setFlags(element, enable, Flag::IsHovered); }
void setInActiveChain(Element& element, bool enable) { setFlags(element, enable, Flag::InActiveChain); }
void setBeingDragged(Element& element, bool enable) { setFlags(element, enable, Flag::IsBeingDragged); }
void setHasFocusVisible(Element& element, bool enable) { setFlags(element, enable, Flag::HasFocusVisible); }
void setHasFocusWithin(Element& element, bool enable) { setFlags(element, enable, Flag::HasFocusWithin); }
void clearActiveAndHovered(Element& element) { clearFlags(element, { Flag::IsActive, Flag::InActiveChain, Flag::IsHovered }); }
void clearAllForElement(Element& element) { clearFlags(element, { Flag::IsActive, Flag::InActiveChain, Flag::IsHovered, Flag::IsFocused, Flag::IsBeingDragged, Flag::HasFocusVisible, Flag::HasFocusWithin }); }
void clear();
private:
enum class Flag {
IsActive = 1 << 0,
InActiveChain = 1 << 1,
IsHovered = 1 << 2,
IsFocused = 1 << 3,
IsBeingDragged = 1 << 4,
HasFocusVisible = 1 << 5,
HasFocusWithin = 1 << 6,
};
void setFlags(Element& element, bool enable, OptionSet<Flag> flags) { enable ? setFlags(element, flags) : clearFlags(element, flags); }
void setFlags(Element&, OptionSet<Flag>);
void clearFlags(Element&, OptionSet<Flag>);
bool hasFlag(const Element&, Flag) const;
WeakHashMap<Element, OptionSet<Flag>, WeakPtrImplWithEventTargetData> m_elements;
};
} // namespace WebCore
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