/*

* Copyright (c) 2002-2008 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:  CallControl command handler

*

*/

#ifndef CCALLCONTROLHANDLER_H

#define CCALLCONTROLHANDLER_H

#include <etelsat.h>

#include "CSatCommandHandler.h"

#include "SatSTypes.h"

class MSatUtils;

class CCallControlRequestHandler;

/**

*  Command handler for CallControl command.

*

*  @lib CallControlCmd.lib

*  @since Series 60 3.0

*/

class CCallControlHandler : public CSatCommandHandler

    {

    public:  // Constructors and destructor

        /**

        * Two-phased constructor.

        * @param aUtils Utils inteface

        */

        static CCallControlHandler* NewL( MSatUtils* aUtils );

        /**

        * Destructor.

        */

        virtual ~CCallControlHandler();

    public: // Functions from base classes

        /**

        * From MSatCommand.

        */

        void ClientResponse();

    public:// New Functions

        /**

        * Processes the Cc Request Complete.

        *

        * @param aErrCode Result of ETelMM Api calling.

        */

        void DispatchCcRequestComplete( const TInt aErrCode );

        /**

        * TCcStatus

        * Call control status, when there is an asynchronous

        * operation is handling by the CCallControlRequestHandler

        * we will save some status information

        */

        enum TCcStatus

            {

            ECcIdle = 0,

            ECcDialWaiting,

            ECcSendSsWaiting,

            ECcSendUssdWaiting

            };

    protected:  // Functions from base classes

        /**

        * From CActive Cancels the usat request.

        */

        void DoCancel();

        /**

        * From CSatCommandHandler Requests the command notification.

        * @param aStatus Request status to active object notification

        */

        void IssueUSATRequest( TRequestStatus& aStatus );

        /**

        * From CSatCommandHandler Precheck before executing the command.

        * @return Boolean indicating is this command allowed to execute.

        */

        TBool CommandAllowed();

        /**

        * From CSatCommandHandler Need for ui session.

        * @return Boolean indicating does this command need UI session.

        */

        TBool NeedUiSession();

        /**

        * From CSatCommandHandler Called when USAT API notifies that command.

        */

        void HandleCommand();

        /**

        * From CSatCommandHandler. Indicates the failure of launching ui client

        */

        void UiLaunchFailed();

    private:

        /**

        * C++ default constructor.

        */

        CCallControlHandler();

        /**

        * By default Symbian 2nd phase constructor is private.

        */

        void ConstructL();

        /**

        * If it is needed that sat makes a no FDN check call or 

        * send SS or send USSD we should perform these operation 

        */

        void CallControlClientOperation();

        /**

        * If SAT needs to do Call Control next action, 

        * i.e. Call Control has modified the type of request,

        * then this method should be called

        */

        TInt DialNumber();

        /**

        * Make a no FDN check Send SS

        */

        TInt SendSs();

        /**

        * Make a no FDN check Send USSD

        */

        TInt SendUssd();

        /**

         * Notify session done, start recieve more command.

         */

        void CompleteCallControlCmd( TInt aErrCode );

    private:    // Data

        // CallControl command data.

        RSat::TCallControlV6 iCallControlData;

        // CallControl command package.

        RSat::TCallControlV6Pckg iCallControlPckg;

        // CallControl send data

        TSatNotificationV1 iCallControlSendData;

        // CallControl SendData package

        TSatNotificationV1Pckg iCallControlSendDataPckg;

        // CallControl UI Response data

        TSatNotificationRspV1 iCallControlUiRespData;

        // CallControl UI Response package

        TSatNotificationRspV1Pckg iCallControlUiRespDataPckg;

        // Indicates is UI needed or not

        TBool iNeedUiSession;

        // Handing the asynchronous request

        CCallControlRequestHandler* iRequestHandler;

        // Current status

        TCcStatus iCcStatus;

    };

#endif      // CCALLCONTROLHANDLER_H