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* Copyright (C) 2011 Google Inc. All rights reserved.
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the following disclaimer
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* in the documentation and/or other materials provided with the
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* * Neither the name of Google Inc. nor the names of its
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* contributors may be used to endorse or promote products derived from
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* this software without specific prior written permission.
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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#ifndef MutationObserverRegistration_h
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#define MutationObserverRegistration_h
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#if ENABLE(MUTATION_OBSERVERS)
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#include "MutationObserver.h"
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#include <wtf/HashSet.h>
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#include <wtf/text/AtomicString.h>
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#include <wtf/text/AtomicStringHash.h>
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class MutationObserverRegistration {
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static PassOwnPtr<MutationObserverRegistration> create(PassRefPtr<MutationObserver>, Node*, MutationObserverOptions, const HashSet<AtomicString>& attributeFilter);
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~MutationObserverRegistration();
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void resetObservation(MutationObserverOptions, const HashSet<AtomicString>& attributeFilter);
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void observedSubtreeNodeWillDetach(Node*);
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void clearTransientRegistrations();
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bool hasTransientRegistrations() const { return m_transientRegistrationNodes && !m_transientRegistrationNodes->isEmpty(); }
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bool shouldReceiveMutationFrom(Node*, MutationObserver::MutationType, const QualifiedName* attributeName) const;
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bool isSubtree() const { return m_options & MutationObserver::Subtree; }
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MutationObserver* observer() const { return m_observer.get(); }
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MutationRecordDeliveryOptions deliveryOptions() const { return m_options & (MutationObserver::AttributeOldValue | MutationObserver::CharacterDataOldValue); }
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MutationObserverOptions mutationTypes() const { return m_options & MutationObserver::AllMutationTypes; }
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void addRegistrationNodesToSet(HashSet<Node*>&) const;
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MutationObserverRegistration(PassRefPtr<MutationObserver>, Node*, MutationObserverOptions, const HashSet<AtomicString>& attributeFilter);
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RefPtr<MutationObserver> m_observer;
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Node* m_registrationNode;
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RefPtr<Node> m_registrationNodeKeepAlive;
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typedef HashSet<RefPtr<Node> > NodeHashSet;
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OwnPtr<NodeHashSet> m_transientRegistrationNodes;
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MutationObserverOptions m_options;
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HashSet<AtomicString> m_attributeFilter;
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} // namespace WebCore
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#endif // ENABLE(MUTATION_OBSERVERS)
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#endif // MutationObserverRegistration_h