--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/ncdengine/inc/ncdsubscriptionoperationobserver.h	Thu Dec 17 08:51:10 2009 +0200
@@ -0,0 +1,67 @@
+/*
+* Copyright (c) 2006 Nokia Corporation and/or its subsidiary(-ies).
+* All rights reserved.
+* This component and the accompanying materials are made available
+* under the terms of "Eclipse Public License v1.0"
+* which accompanies this distribution, and is available
+* at the URL "http://www.eclipse.org/legal/epl-v10.html".
+*
+* Initial Contributors:
+* Nokia Corporation - initial contribution.
+*
+* Contributors:
+*
+* Description:   Definition of MNcdSubscriptionOperationObserver interface
+*
+*/
+
+
+#ifndef M_NCDSUBSCRIPTIONOPERATIONOBSERVER_H
+#define M_NCDSUBSCRIPTIONOPERATIONOBSERVER_H
+
+class MNcdSubscriptionOperation;
+class TNcdProgress;
+class MNcdQuery;
+
+/**
+ *  Observer interface for subscription operations.
+ *
+ *  Subscription operation users should implement this interface to be able to
+ *  receive callbacks.
+ */
+class MNcdSubscriptionOperationObserver
+    {
+    
+public:
+
+    /**
+     * Called when a subscription operation has progressed.
+     *
+     * @param aOperation The operation that sent the event.
+     * @param aProgress Progress of the operation.
+     */
+    virtual void SubscriptionProgress( MNcdSubscriptionOperation& aOperation,
+        TNcdProgress aProgress ) = 0;
+
+    /**
+     * Called when a query has been received for an operation.
+     *
+     * @param aOperation The operation that sent the event.
+     * @param aQuery Pointer to the query object. Counted, Release() must be
+     *  called after use.
+     */
+    virtual void QueryReceived( MNcdSubscriptionOperation& aOperation,
+        MNcdQuery* aQuery ) = 0;
+
+    /**
+     * Called when an operation has been completed.
+     *
+     * @param aOperation The operation that sent the event.
+     * @param aError Error code for operation completion. KErrNone for
+     * successful completion, otherwise a system wide error code.
+     */
+    virtual void OperationComplete( MNcdSubscriptionOperation& aOperation,
+        TInt aError ) = 0;
+    };
+    
+#endif // M_NCDSUBSCRIPTIONOPERATIONOBSERVER_H