diff -r 4ea6f81c838a -r 0e9bb658ef58 mmuifw_plat/alf_widgetmodel_api/inc/alf/ialfinterfacebase.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mmuifw_plat/alf_widgetmodel_api/inc/alf/ialfinterfacebase.h	Wed Sep 01 12:23:18 2010 +0100
@@ -0,0 +1,80 @@
+/*
+* 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:  The base class for interfaces provided by widget classes.
+*
+*/
+
+
+#ifndef I_ALFINTERFACEBASE_H
+#define I_ALFINTERFACEBASE_H
+
+
+
+namespace Alf
+    {
+
+struct IfId;
+/**
+ *  The base class for interfaces provided by
+ *  widget classes, including CAlfWidget, CAlfModel,
+ *  CAlfWidgetControl, MAlfWidgetEventHandler,
+ *  MAlfElement and derived classes.
+ *
+ *  @lib alfwidgetmodel.lib
+ *  @since S60 ?S60_version
+ *  @status Draft
+ */
+class IAlfInterfaceBase
+    {
+public:
+    /**
+     * Default virtual destructor.
+     */
+    virtual ~IAlfInterfaceBase() {}
+
+    /**
+     * Interface getter with casting.
+     *
+     * @since S60 ?S60_version
+     * @param aType The type id of the queried interface.
+     * @return The queried interface, or NULL if the interface is not
+     *         supported or available.
+     */
+    template <class T>
+    static T* makeInterface(IAlfInterfaceBase* aBase)
+        {
+        return (aBase? static_cast<T*>(aBase->makeInterface(T::type())): 0);
+        }
+
+
+    /**
+     * Interface getter.
+     * Derived classes should always call the base class method
+     * from the overridden MakeInterface.
+     *
+     * @since S60 ?S60_version
+     * @param aType The type id of the queried interface.
+     * @return The queried interface, or NULL if the interface is not
+     *         supported or available.
+     */
+    virtual IAlfInterfaceBase* makeInterface( const IfId& aType ) = 0;
+
+
+    };
+
+    }
+
+#endif // I_ALFINTERFACEBASE_H
+
+// End of File