diff -r 000000000000 -r ba25891c3a9e ncdengine/provider/deviceinteraction/inc/ncdasyncoperationobserver.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/ncdengine/provider/deviceinteraction/inc/ncdasyncoperationobserver.h	Thu Dec 17 08:51:10 2009 +0200
@@ -0,0 +1,62 @@
+/*
+* Copyright (c) 2007 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:   MNcdAsyncOperationObserver
+*
+*/
+
+
+#ifndef NCD_ASYNC_OPERATION_OBSERVER_H
+#define NCD_ASYNC_OPERATION_OBSERVER_H
+
+/**
+ * MNcdAsyncOperationObserver
+ *
+ * Provides callback function that may be called when an
+ * asynchronous operation has been completed.
+ *
+ * @see CNcdActiveOperationObserver
+ */
+class MNcdAsyncOperationObserver
+{
+
+public:
+
+    /**
+     * This callback function may be called when an asynchronous operation
+     * has been completed.
+     *
+     * @param aError Gives the error code of the completed operation.
+     *
+     * @since S60 v3.2
+     */
+    virtual void AsyncOperationComplete( TInt aError ) = 0; 
+
+
+protected:
+
+    /**
+     * The destructor of an interface is set virtual to make sure that
+     * the destructors of derived classes are called appropriately when the
+     * object is destroyed.
+     *
+     * Destructor is defined as protected to prevent direct use of delete on 
+     * observer interface pointer.
+     *
+     * @since S60 v3.2
+     */
+    virtual ~MNcdAsyncOperationObserver() { }
+
+};
+
+#endif // NCD_ASYNC_OPERATION_OBSERVER_H