diff -r 666f914201fb -r 2fe1408b6811 epoc32/include/remcon/remconinterfacebase.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/epoc32/include/remcon/remconinterfacebase.h	Tue Mar 16 16:12:26 2010 +0000
@@ -0,0 +1,119 @@
+// Copyright (c) 2004-2009 Nokia Corporation and/or its subsidiary(-ies).
+// All rights reserved.
+// This component and the accompanying materials are made available
+// under the terms of the License "Symbian Foundation License v1.0" to Symbian Foundation members and "Symbian Foundation End User License Agreement v1.0" to non-members
+// which accompanies this distribution, and is available
+// at the URL "http://www.symbianfoundation.org/legal/licencesv10.html".
+//
+// Initial Contributors:
+// Nokia Corporation - initial contribution.
+//
+// Contributors:
+//
+// Description:
+//
+
+
+
+/**
+ @file
+ @publishedPartner
+ @released
+*/
+
+#ifndef REMCONINTERFACEBASE_H
+#define REMCONINTERFACEBASE_H
+
+#include <e32base.h>
+#include <remcon/clienttype.h>
+
+class CRemConInterfaceSelector;
+
+/**
+Base class for outer layer APIs. 
+*/
+class CRemConInterfaceBase : public CBase
+	{
+public: 
+	/** Destructor */
+	IMPORT_C ~CRemConInterfaceBase();
+
+public: // called by the ultimate client
+	/** 
+	Cancels the currently outstanding asynchronous send request. 
+	@return KErrNone.
+	*/
+	IMPORT_C TInt Cancel();
+
+public: // called by the interface selector
+	/**
+	Called by the interface selector to get a pointer to an object which 
+	implements the interface API with UID aUid. This is a mechanism for 
+	allowing future change to the interface API without breaking BC in 
+	existing (non-updated) interfaces.
+	*/
+	virtual TAny* GetInterfaceIf(TUid aUid) = 0;
+
+	/** 
+	Accessor for the interface's UID. 
+	@return The interface's UID.
+	*/
+	TUid InterfaceUid() const;
+
+	/** 
+	Accessor for the maximum length of operation-specific data in this 
+	interface. 
+	@return The size in bytes of a buffer needed to hold the largest single 
+	payload of operation-associated data in this interface.
+	*/
+	TUint MaxLength() const;
+
+	/**
+	Accessor for the type of the interface- either controller or target.
+	@return The interface type.
+	*/
+	TRemConClientType Type() const;
+
+protected:
+	/** 
+	Constructor.
+	@param aInterfaceUid The UID of the interface.
+	@param aMaxLength The maximum length of any operation-specific data in the 
+	interface being registered.
+	@param aInterfaceSelector The interface selector.
+	*/
+	IMPORT_C CRemConInterfaceBase(TUid aInterfaceUid, 
+		TUint aMaxLength, 
+		CRemConInterfaceSelector& aInterfaceSelector,
+		TRemConClientType aType);
+
+	/** Must be called by concrete types at construction time. Registers the 
+	interface with the interface selector. */
+	IMPORT_C void BaseConstructL();
+
+	/** 
+	Accessor for the interface selector. 
+	@return The interface selector.
+	*/
+	IMPORT_C CRemConInterfaceSelector& InterfaceSelector();
+
+private: // owned
+	/** The UID of the concrete (derived) interface. */
+	TUid iInterfaceUid; 
+
+	/** Max length of operation-specific data in this interface. */
+	TUint iMaxLength; 
+
+	/** The type of the interface- controller or target. */
+	const TRemConClientType iType;
+
+	/** 
+	Pad for BC-friendly future change.
+	*/
+	TAny* iPad;
+
+private: // unowned
+	CRemConInterfaceSelector& iInterfaceSelector;
+	};
+
+#endif // REMCONINTERFACEBASE_H