/*

* 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:  Fetches call waiting status from ETel

*

*/

#ifndef CSPETELCALLWAITINGREQUESTER_H

#define CSPETELCALLWAITINGREQUESTER_H

#include <e32base.h>

#include <mccpcscall.h>

#include <mccecall.h>

#include <etelmm.h>

class RMobilePhone;

class CRetrieveMobilePhoneCWList;

/**

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

* Provides canceling via CActive::Cancel().

* 

*/

class CSPEtelCallWaitingRequester

        : public CActive

    {

    public:

        /**

        * Constructs the requester via two phase.

        *

        * @param aPhone mobile phone reference needed for reading cw setting

        * @return requester object

        */

        static CSPEtelCallWaitingRequester* NewL( RMobilePhone& aPhone );

        /**

        * C++ default destructor

        */

        virtual ~CSPEtelCallWaitingRequester( );

        /**

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

        * separate MakeDialRequest function.

        *

        * @since S60 3.2

        * @param aRequest type of request

        * @return ETrue if active, EFalse if not

        */

        void GetCallWaitingL( const CCCECallParameters& iParams,

                              TBool& aCallWaitingStatus );

    protected: // From CActive

        /**

        * From CActive

        * RunL

        * @since S60 3.2

        */

        void RunL();

        /**

        * From CActive

        * Cancels the monitor

        * @since S60 3.2

        */

        void DoCancel();

    private:

        /**

        * Requester can be inactive (from boot to first Cw request),

        * requesting value from network 

        *       (with first MT call that gets Queue-request from CCE),

        * or monitoring (after first request).

        */        

        enum ECSPCwRequesterMode {

            ECwRequesterInactive,

            ECwRequesterGetStarted,

            ECwRequesterMonitoring

        };

    private:

        /**

        * Constructor.

        * @param aPhone mobile phone reference needed for reading cw setting

        *

        */

        CSPEtelCallWaitingRequester::CSPEtelCallWaitingRequester(RMobilePhone& aPhone);

        /**

        * Constructs the requester.

        *

        * @param aPhone phone reference

        */

        void CSPEtelCallWaitingRequester::ConstructL();

        /**

        * Starts monitoring call waiting setting.

        */

        void StartMonitoring();

        /**

        * Returns the call waiting status from call waiting status list by linetype.

        */

        void GetCallWaitingStatusByLineType( const CCCECallParameters& iParams,

                                             TBool& aCallWaitingStatus );

    private: // data

        /**

        * List of call waiting settings.

        * Own.

        */        

        CRetrieveMobilePhoneCWList* iList;

        /**

        * Making the asynchronous request synchronous.

        */ 

        CActiveSchedulerWait iWait;

        /**

        * Phone handle for listening cw status changes.

        */

        RMobilePhone& iPhone;

        /**

        * Cw status descriptor for reading changed cw status.

        */

        TPckgBuf<RMobilePhone::TMobilePhoneCWInfoEntryV1> iDesCwStatus;

        /**

        * Current mode according to the enumeration.

        */

        ECSPCwRequesterMode iMode;

        /**

        * Actual call waiting status for primary line: On/Off = True/False.

        */

        TBool iPrimaryLineCwStatus;

        /**

        * Actual call waiting status for aux line: On/Off = True/False.

        */

        TBool iAuxLineCwStatus;

    };

#endif // CSPETELCALLWAITINGREQUESTER_H