/*
* Copyright (c) 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: CCP extension provider class.
*
*/
#ifndef MCCPEXTENSIONPROVIDER_H
#define MCCPEXTENSIONPROVIDER_H
// INCLUDES
#include <e32base.h>
class MCCPExtensionObserver;
/**
* Plug-in extension feature provider.
* E.g telephony engine might have plugin features specific to call providers functionality.
* Plug-in specific actions can be requested via this class.
* Asyncronous results are are returned using MCCPExtensionObserver
*
* @since S60 3.2
*/
class MCCPExtensionProvider
{
protected:
/**
* Protected destructor. Object cannot be deleted from plug-in client (CCE).
* @since S60 3.2
*/
virtual inline ~MCCPExtensionProvider() {};
public:
/**
* Request a custom command from the plug-in. Result returned via MCCPExtensionObserver.
* @since S60 3.2
* @param aRequest Id of request.
* @param aData Request data.
* @return none
*/
virtual void RequestCommand( TInt aRequest,
TDesC8& aData ) = 0;
/**
* Cancels request. Result returned via MCCPExtensionObserver.
* @since S60 3.2
* @param aReqToCancel Id of request to cancel.
* @return none
*/
virtual void CancelRequest( TInt aReqToCancel ) = 0;
/**
* Add an observer for extension related events.
* Currently CCE will set only one observer.
* @since S60 v3.2
* @param aObserver Observer to add.
* @return none
* @leave system error if observer adding fails
*/
virtual void AddObserverL( const MCCPExtensionObserver& aObserver ) = 0;
/**
* Remove an observer.
* @since S60 v3.2
* @param aObserver Observer to remove.
* @return KErrNone if removed succesfully.
* @return KErrNotFound if observer was not found.
*/
virtual TInt RemoveObserver( const MCCPExtensionObserver& aObserver ) = 0;
};
#endif // MCCPEXTENSIONPROVIDER_H