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nsAbRDFDataSource.h
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00037 
00038 #ifndef nsAbRDFDataSource_h__
00039 #define nsAbRDFDataSource_h__
00040 
00041 
00042 #include "nsCOMPtr.h"
00043 #include "nsIRDFDataSource.h"
00044 #include "nsIRDFService.h"
00045 #include "nsISupportsArray.h"
00046 #include "nsString.h"
00047 
00051 class nsAbRDFDataSource : public nsIRDFDataSource
00052 {
00053 public:
00054        NS_DECL_ISUPPORTS
00055        NS_DECL_NSIRDFDATASOURCE
00056 
00057        nsAbRDFDataSource();
00058        virtual ~nsAbRDFDataSource();
00059   
00060 protected:
00061 
00062        nsresult createNode(const PRUnichar *str, nsIRDFNode **node);
00063   nsresult createBlobNode(PRUint8 *value, PRUint32 &length, nsIRDFNode **node, nsIRDFService *rdfService);
00064 
00065        nsresult NotifyPropertyChanged(
00066               nsIRDFResource *resource,
00067               nsIRDFResource *propertyResource,
00068               const PRUnichar *oldValue,
00069               const PRUnichar *newValue);
00070 
00071        nsresult NotifyObservers(
00072               nsIRDFResource *subject,
00073               nsIRDFResource *property,
00074               nsIRDFNode *object,
00075               PRBool assert,
00076               PRBool change);
00077 
00078        nsresult CreateProxyObservers ();
00079 
00080        nsresult CreateProxyObserver (
00081               nsIRDFObserver* observer,
00082               nsIRDFObserver** proxyObserver);
00083 
00084        static PRBool assertEnumFunc(nsISupports *aElement, void *aData);
00085        static PRBool unassertEnumFunc(nsISupports *aElement, void *aData);
00086        static PRBool changeEnumFunc(nsISupports *aElement, void *aData);
00087 
00088 private:
00089        nsCOMPtr<nsISupportsArray> mObservers;
00090        nsCOMPtr<nsISupportsArray> mProxyObservers;
00091 
00092        PRLock* mLock;
00093 };
00094 
00095 #endif