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/*
* Copyright (C) 2013 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.
* * Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following disclaimer
* in the documentation and/or other materials provided with the
* distribution.
* * 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 "config.h"
#include "core/dom/custom/CustomElementUpgradeCandidateMap.h"
#include "core/dom/Element.h"
namespace WebCore {
PassOwnPtrWillBeRawPtr<CustomElementUpgradeCandidateMap> CustomElementUpgradeCandidateMap::create()
{
return adoptPtrWillBeNoop(new CustomElementUpgradeCandidateMap());
}
CustomElementUpgradeCandidateMap::~CustomElementUpgradeCandidateMap()
{
#if !ENABLE(OILPAN)
// With Oilpan enabled, the observer table keeps a weak reference to the
// element; no need for explicit removal.
UpgradeCandidateMap::const_iterator::Keys end = m_upgradeCandidates.end().keys();
for (UpgradeCandidateMap::const_iterator::Keys it = m_upgradeCandidates.begin().keys(); it != end; ++it)
unobserve(*it);
#endif
}
void CustomElementUpgradeCandidateMap::add(const CustomElementDescriptor& descriptor, Element* element)
{
observe(element);
UpgradeCandidateMap::AddResult result = m_upgradeCandidates.add(element, descriptor);
ASSERT_UNUSED(result, result.isNewEntry);
UnresolvedDefinitionMap::iterator it = m_unresolvedDefinitions.find(descriptor);
ElementSet* elements;
if (it == m_unresolvedDefinitions.end())
elements = m_unresolvedDefinitions.add(descriptor, adoptPtrWillBeNoop(new ElementSet())).storedValue->value.get();
else
elements = it->value.get();
elements->add(element);
}
void CustomElementUpgradeCandidateMap::elementWasDestroyed(Element* element)
{
CustomElementObserver::elementWasDestroyed(element);
UpgradeCandidateMap::iterator candidate = m_upgradeCandidates.find(element);
ASSERT_WITH_SECURITY_IMPLICATION(candidate != m_upgradeCandidates.end());
UnresolvedDefinitionMap::iterator elements = m_unresolvedDefinitions.find(candidate->value);
ASSERT_WITH_SECURITY_IMPLICATION(elements != m_unresolvedDefinitions.end());
elements->value->remove(element);
m_upgradeCandidates.remove(candidate);
}
void CustomElementUpgradeCandidateMap::elementDidFinishParsingChildren(Element* element)
{
// An upgrade candidate finished parsing; reorder so that eventual
// upgrade order matches finished-parsing order.
moveToEnd(element);
}
void CustomElementUpgradeCandidateMap::moveToEnd(Element* element)
{
UpgradeCandidateMap::iterator candidate = m_upgradeCandidates.find(element);
ASSERT_WITH_SECURITY_IMPLICATION(candidate != m_upgradeCandidates.end());
UnresolvedDefinitionMap::iterator elements = m_unresolvedDefinitions.find(candidate->value);
ASSERT_WITH_SECURITY_IMPLICATION(elements != m_unresolvedDefinitions.end());
elements->value->appendOrMoveToLast(element);
}
PassOwnPtrWillBeRawPtr<CustomElementUpgradeCandidateMap::ElementSet> CustomElementUpgradeCandidateMap::takeUpgradeCandidatesFor(const CustomElementDescriptor& descriptor)
{
OwnPtrWillBeRawPtr<ElementSet> candidates = m_unresolvedDefinitions.take(descriptor);
if (!candidates)
return nullptr;
for (ElementSet::const_iterator candidate = candidates->begin(); candidate != candidates->end(); ++candidate) {
unobserve(*candidate);
m_upgradeCandidates.remove(*candidate);
}
return candidates.release();
}
void CustomElementUpgradeCandidateMap::trace(Visitor* visitor)
{
visitor->trace(m_upgradeCandidates);
visitor->trace(m_unresolvedDefinitions);
CustomElementObserver::trace(visitor);
}
}
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