--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/usbmgmt/usbmgr/usbman/extensionplugin/public/CUsbManExtensionPlugin.h	Tue Feb 02 02:02:59 2010 +0200
@@ -0,0 +1,87 @@
+/*
+* Copyright (c) 2005-2009 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:
+* Abstract base class for usbman extension plugins.
+*
+*/
+
+/**
+ @file
+ @publishedPartner
+ @released
+*/
+
+#ifndef USBMANEXTENSIONPLUGIN_H
+#define USBMANEXTENSIONPLUGIN_H
+
+#include <e32base.h>
+#include <d32usbc.h>
+
+class MUsbmanExtensionPluginObserver;
+class MUsbDeviceNotify;
+
+/**
+The UID of the Usbman Extension Plugin interface.
+*/
+const TInt KUsbmanExtensionPluginInterfaceUid = 0x10208DD6;
+
+class CUsbmanExtensionPlugin : public CBase
+	{
+public:
+	/** 
+	Constructor.
+	@param aImplementationUid The UID of the implementation.
+	@param aObserver The observer of the plugin.
+	*/
+	IMPORT_C static CUsbmanExtensionPlugin* NewL(const TUid aImplementationUid, 
+		MUsbmanExtensionPluginObserver& aObserver);
+
+	/** Destructor. */
+	IMPORT_C ~CUsbmanExtensionPlugin();
+
+public:
+	/**
+	Called by Usbman server to get a pointer to an object which implements the 
+	ExtensionPlugin interface with UID aUid. This is a mechanism for allowing future 
+	change to the plugin API without breaking BC in existing (non-updated) 
+	plugins.
+	*/
+	virtual TAny* GetInterface(TUid aUid) = 0;
+
+protected:
+	/** 
+	Constructor.
+	@param aObserver The observer of the plugin.
+	*/
+	IMPORT_C CUsbmanExtensionPlugin(MUsbmanExtensionPluginObserver& aObserver);
+
+protected:
+	/**
+	Accessor for the observer.
+	@return The observer.
+	*/
+	IMPORT_C MUsbmanExtensionPluginObserver& Observer();
+
+private: // owned
+	/**
+	UID set by ECOM when the instance is created. Used when the instance is 
+	destroyed.
+	*/
+	TUid iInstanceId;
+
+private: // unowned
+	MUsbmanExtensionPluginObserver& iObserver;
+	};
+
+#endif // USBMANEXTENSIONPLUGIN_H