diff -r 000000000000 -r ba25891c3a9e iaupdate/IAD/engine/inc/iaupdatenodeobserver.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/iaupdate/IAD/engine/inc/iaupdatenodeobserver.h	Thu Dec 17 08:51:10 2009 +0200
@@ -0,0 +1,75 @@
+/*
+* Copyright (c) 2009 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:   ?Description
+*
+*/
+
+
+
+#ifndef IAUPDATENODEOBSERVER_H
+#define IAUPDATENODEOBSERVER_H
+
+class MIAUpdateNode;
+
+class MIAUpdateNodeObserver
+    {
+
+public:
+
+    /**
+     * Notifies observer on the progress of an operation.
+     * @param aNode Node that is under operation
+     * @param aProgress Current progress of operation
+     * @param aMaxProgress Maximum progress of operation     
+     **/
+    virtual void DownloadProgress( MIAUpdateNode& aNode,
+                                   TUint aProgress,
+                                   TUint aMaxProgress ) = 0;
+                            
+    /**
+     * Notifies observer that an operation has been completed
+     * @param aNode Node who had its operation completed
+     * @param aError Error value
+     **/
+    virtual void DownloadComplete( MIAUpdateNode& aNode,
+                                   TInt aError ) = 0;
+
+    /**
+     * Notifies observer on the progress of an operation.
+     * @param aNode Node that is under operation
+     * @param aProgress Current progress of operation
+     * @param aMaxProgress Maximum progress of operation     
+     **/
+    virtual void InstallProgress( MIAUpdateNode& aNode,
+                                  TUint aProgress,
+                                  TUint aMaxProgress ) = 0;
+                            
+    /**
+     * Notifies observer that an operation has been completed
+     * @param aNode Node who had its operation completed
+     * @param aError Error value
+     **/
+    virtual void InstallComplete( MIAUpdateNode& aNode,
+                                  TInt aError ) = 0;
+
+                                   
+protected:
+
+    virtual ~MIAUpdateNodeObserver()
+        {
+        }
+        
+    };
+
+#endif  //  IAUPDATENODEOBSERVER_H