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31 #ifndef MutationObserverRegistration_h
32 #define MutationObserverRegistration_h
34 #include "core/dom/MutationObserver.h"
35 #include "platform/heap/Handle.h"
36 #include "wtf/HashSet.h"
37 #include "wtf/text/AtomicString.h"
38 #include "wtf/text/AtomicStringHash.h"
44 class MutationObserverRegistration FINAL : public NoBaseWillBeGarbageCollectedFinalized<MutationObserverRegistration> {
46 static PassOwnPtrWillBeRawPtr<MutationObserverRegistration> create(MutationObserver&, Node*, MutationObserverOptions, const HashSet<AtomicString>& attributeFilter);
47 ~MutationObserverRegistration();
49 void resetObservation(MutationObserverOptions, const HashSet<AtomicString>& attributeFilter);
50 void observedSubtreeNodeWillDetach(Node&);
51 void clearTransientRegistrations();
52 bool hasTransientRegistrations() const { return m_transientRegistrationNodes && !m_transientRegistrationNodes->isEmpty(); }
55 bool shouldReceiveMutationFrom(Node&, MutationObserver::MutationType, const QualifiedName* attributeName) const;
56 bool isSubtree() const { return m_options & MutationObserver::Subtree; }
58 MutationObserver& observer() const { return *m_observer; }
59 MutationRecordDeliveryOptions deliveryOptions() const { return m_options & (MutationObserver::AttributeOldValue | MutationObserver::CharacterDataOldValue); }
60 MutationObserverOptions mutationTypes() const { return m_options & MutationObserver::AllMutationTypes; }
62 void addRegistrationNodesToSet(HashSet<Node*>&) const;
69 MutationObserverRegistration(MutationObserver&, Node*, MutationObserverOptions, const HashSet<AtomicString>& attributeFilter);
71 RefPtrWillBeMember<MutationObserver> m_observer;
72 RawPtrWillBeWeakMember<Node> m_registrationNode;
73 RefPtrWillBeMember<Node> m_registrationNodeKeepAlive;
74 typedef HashSet<RefPtr<Node> > NodeHashSet;
75 OwnPtr<NodeHashSet> m_transientRegistrationNodes;
77 MutationObserverOptions m_options;
78 HashSet<AtomicString> m_attributeFilter;
81 } // namespace WebCore
83 #endif // MutationObserverRegistration_h