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31 #ifndef MutationObserverRegistration_h
32 #define MutationObserverRegistration_h
34 #if ENABLE(MUTATION_OBSERVERS)
36 #include "WebKitMutationObserver.h"
37 #include <wtf/HashSet.h>
38 #include <wtf/text/AtomicString.h>
39 #include <wtf/text/AtomicStringHash.h>
43 class MutationObserverRegistration {
46 static PassOwnPtr<MutationObserverRegistration> create(PassRefPtr<WebKitMutationObserver>, Node*);
48 ~MutationObserverRegistration();
50 void resetObservation(MutationObserverOptions, const HashSet<AtomicString>& attributeFilter);
51 void observedSubtreeNodeWillDetach(PassRefPtr<Node>);
52 void clearTransientRegistrations();
55 bool shouldReceiveMutationFrom(Node*, WebKitMutationObserver::MutationType, const AtomicString& attributeName);
56 bool inline isSubtree() const { return m_options & WebKitMutationObserver::Subtree; }
58 WebKitMutationObserver* observer() { return m_observer.get(); }
59 MutationRecordDeliveryOptions deliveryOptions() const { return m_options & (WebKitMutationObserver::AttributeOldValue | WebKitMutationObserver::CharacterDataOldValue); }
60 MutationObserverOptions mutationTypes() const { return m_options & WebKitMutationObserver::AllMutationTypes; }
63 MutationObserverRegistration(PassRefPtr<WebKitMutationObserver>, Node*);
65 const HashSet<AtomicString>& caseInsensitiveAttributeFilter();
67 RefPtr<WebKitMutationObserver> m_observer;
68 Node* m_registrationNode;
69 RefPtr<Node> m_registrationNodeKeepAlive;
70 typedef HashSet<RefPtr<Node> > NodeHashSet;
71 OwnPtr<NodeHashSet> m_transientRegistrationNodes;
73 MutationObserverOptions m_options;
74 HashSet<AtomicString> m_attributeFilter;
75 OwnPtr<HashSet<AtomicString> > m_caseInsensitiveAttributeFilter;
78 } // namespace WebCore
80 #endif // ENABLE(MUTATION_OBSERVERS)
82 #endif // MutationObserverRegistration_h