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31 #ifndef MutationObserver_h
32 #define MutationObserver_h
34 #include "bindings/v8/ScriptWrappable.h"
35 #include "wtf/HashSet.h"
36 #include "wtf/PassRefPtr.h"
37 #include "wtf/RefCounted.h"
38 #include "wtf/RefPtr.h"
39 #include "wtf/Vector.h"
45 class MutationCallback;
46 class MutationObserverRegistration;
50 typedef unsigned char MutationObserverOptions;
51 typedef unsigned char MutationRecordDeliveryOptions;
53 class MutationObserver : public RefCounted<MutationObserver>, public ScriptWrappable {
58 CharacterData = 1 << 2,
60 AllMutationTypes = ChildList | Attributes | CharacterData
63 enum ObservationFlags {
65 AttributeFilter = 1 << 4
69 AttributeOldValue = 1 << 5,
70 CharacterDataOldValue = 1 << 6,
73 static PassRefPtr<MutationObserver> create(PassOwnPtr<MutationCallback>);
74 static void resumeSuspendedObservers();
75 static void deliverMutations();
79 void observe(Node*, const Dictionary&, ExceptionState&);
80 Vector<RefPtr<MutationRecord> > takeRecords();
82 void observationStarted(MutationObserverRegistration*);
83 void observationEnded(MutationObserverRegistration*);
84 void enqueueMutationRecord(PassRefPtr<MutationRecord>);
85 void setHasTransientRegistration();
88 HashSet<Node*> getObservedNodes() const;
91 struct ObserverLessThan;
93 explicit MutationObserver(PassOwnPtr<MutationCallback>);
96 OwnPtr<MutationCallback> m_callback;
97 Vector<RefPtr<MutationRecord> > m_records;
98 HashSet<MutationObserverRegistration*> m_registrations;
104 #endif // MutationObserver_h