--- /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