/*

* 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:  Delivers asynchronous requests to ETel

*

*/

#ifndef CSPETELCONFERENCECALLREQUESTER_H

#define CSPETELCONFERENCECALLREQUESTER_H

#include <e32base.h>

#include <etelmm.h>

#include <rmmcustomapi.h>

class CSPCall;

class MCCPCallObserver;

class CSPConferenceCall;

/**

* Makes asynchronic request to ETel interface according to given request type.

* Provides canceling via CActive::Cancel().

* 

*/

class CSPEtelConferenceCallRequester

        : public CActive

    {

    public:

        /**

        * Supported request types.

        */

        enum TConferenceRequestType {

            EConferenceRequestTypeAddCall,

            EConferenceRequestTypeHangup,

            EConferenceRequestTypeHold,

            EConferenceRequestTypeResume,

            EConferenceRequestTypeCreateConference,

            EConferenceRequestTypeSwap

            };

        /**

        * Constructs the requester via two phase.

        *

        * @param aOwner the owner for the requester

        * @param aCall ETel RMobileCall reference that is the object

        * of the request.

        */

        static CSPEtelConferenceCallRequester* NewL( 

                                           CSPConferenceCall& aOwner, 

                                           RMobileConferenceCall& aCall );

        /**

        * C++ default destructor

        */

        virtual ~CSPEtelConferenceCallRequester( );

        /**

        * Makes the request. Note that ERequestTypeDial is made with a 

        * separate MakeDialRequest function.

        *

        * @since S60 3.2

        * @param aRequest type of request

        * @return KErrNone if request was sent successfully.

        *         KErrNotSupported if the given request is not supported

        *         KErrArgument if the specified request is not known.

        *         KErrUnknown if unspecified error (should not happen)

        */

        TInt MakeRequest( TConferenceRequestType aRequest );

        /**

        * Makes a dial request.

        * @since S60 3.2

        * @param aCallName call name to be added

        * @return KErrNone if successful, else error code

        */         

        TInt MakeAddCallRequest( const TName& aCallName );

    protected: // From CActive

        /**

        * From CActive

        * RunL

        * @since S60 3.2

        */

        void RunL();

        /**

        * From CActive

        * Cancels the monitor

        * @since S60 3.2

        */

        void DoCancel();

    private:

        /**

        * Constructs the requester.

        *

        * @param aOwner the owner for the requester

        * @param aCall ETel RMobileCall reference that is the object

        * of the request.

        */

        CSPEtelConferenceCallRequester( CSPConferenceCall& aOwner, 

                                        RMobileConferenceCall& aCall );

        /**

        * Constructing in the second phase.

        */

        void ConstructL();

    private: // data

        /**

        * Call object which owns this monitor

        */

        CSPConferenceCall& iOwner;

        /**

        * ETel call which this monitors

        */

        RMobileConferenceCall& iCall;

        /**

        * Type of request.

        */

        TConferenceRequestType iRequestType;

    };

#endif // CSPETELCONFERENCECALLREQUESTER_H