--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/homescreensrv_plat/ai_utilities_api/inc/aipspropertyobserver.h	Thu Dec 17 08:54:17 2009 +0200
@@ -0,0 +1,86 @@
+/*
+* Copyright (c) 2005-2006 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:  Publish and subscribe parameter observer implementation.
+*
+*/
+
+
+#ifndef MAIPSPROPERTYOBSERVER_H
+#define MAIPSPROPERTYOBSERVER_H
+
+// INCLUDES
+#include <e32base.h>
+
+// CLASS DECLARATION
+
+/**
+*  It is the interface for handling property change events.
+*
+*  @since S60 3.2
+*/
+class MAiPSPropertyObserver
+    {
+    public:
+	    
+        /**
+	 	 * Get the current value of the key.
+	 	 * 
+	 	 * @since S60 3.2
+	 	 * @param aValue refrerence to an integer value of key
+	 	 * @return integer value of the error.
+	 	 */
+        virtual TInt Get( TInt& aValue) = 0;
+        
+        /**
+	 	 * Get the current value of the key.
+	 	 * 
+	 	 * @since S60 3.2
+	     * @param aString reference to an 8-bit descriptor of the key
+	 	 * @return integer value of the error.
+	 	 */
+        virtual TInt Get( TDes8& aString ) = 0;
+        
+        /**
+	 	 * Get the current value of the key.
+	 	 * 
+	 	 * @since S60 3.2
+	 	 * @param aString reference to an 16-bit descriptor of the key
+	 	 * @return integer value of the error.
+	 	 */
+        virtual TInt Get( TDes16& aString ) = 0;
+        
+        /**
+	     * Release the observer
+	     */
+        virtual void Release() = 0;
+        
+    protected:
+        ~MAiPSPropertyObserver() { }
+    };
+
+/**
+ * Helper for calling MAiPSPropertyObserver::Release() with NULL checking.
+ */
+inline void Release(MAiPSPropertyObserver* obj)
+    {
+    if (obj)
+        {
+        obj->Release();
+        }
+    }
+
+#endif      // MAIPSPROPERTYOBSERVER_H
+
+// End of File
+