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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.
*/
#include "core/dom/UserActionElementSet.h"
#include "core/dom/Element.h"
#include "core/dom/Node.h"
namespace blink {
UserActionElementSet::UserActionElementSet() {}
UserActionElementSet::~UserActionElementSet() {}
void UserActionElementSet::didDetach(Element& element) {
DCHECK(element.isUserActionElement());
clearFlags(&element, IsActiveFlag | InActiveChainFlag | IsHoveredFlag);
}
bool UserActionElementSet::hasFlags(const Node* node, unsigned flags) const {
DCHECK(node->isUserActionElement() && node->isElementNode());
return hasFlags(toElement(node), flags);
}
void UserActionElementSet::setFlags(Node* node, unsigned flags) {
if (!node->isElementNode())
return;
return setFlags(toElement(node), flags);
}
void UserActionElementSet::clearFlags(Node* node, unsigned flags) {
if (!node->isElementNode())
return;
return clearFlags(toElement(node), flags);
}
inline bool UserActionElementSet::hasFlags(const Element* element,
unsigned flags) const {
DCHECK(element->isUserActionElement());
ElementFlagMap::const_iterator found =
m_elements.find(const_cast<Element*>(element));
if (found == m_elements.end())
return false;
return found->value & flags;
}
inline void UserActionElementSet::clearFlags(Element* element, unsigned flags) {
if (!element->isUserActionElement()) {
DCHECK(m_elements.end() == m_elements.find(element));
return;
}
ElementFlagMap::iterator found = m_elements.find(element);
if (found == m_elements.end()) {
element->setUserActionElement(false);
return;
}
unsigned updated = found->value & ~flags;
if (!updated) {
element->setUserActionElement(false);
m_elements.remove(found);
return;
}
found->value = updated;
}
inline void UserActionElementSet::setFlags(Element* element, unsigned flags) {
ElementFlagMap::iterator result = m_elements.find(element);
if (result != m_elements.end()) {
DCHECK(element->isUserActionElement());
result->value |= flags;
return;
}
element->setUserActionElement(true);
m_elements.add(element, flags);
}
DEFINE_TRACE(UserActionElementSet) {
visitor->trace(m_elements);
}
} // namespace blink
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