/*

* 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 CSPETELCALLREQUESTER_H

#define CSPETELCALLREQUESTER_H

#include <e32base.h>

#include <etelmm.h>

#include <rmmcustomapi.h>

#include <ccpdefs.h>

class MCSPCallErrorObserver;

/**

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

* Provides canceling via CActive::Cancel().

* 

*/

class CSPEtelCallRequester

        : public CActive

    {

    public:

        /**

        * Supported request types.

        */

        enum TRequestType {

            ERequestTypeNone,

            ERequestTypeDial,

            ERequestTypeAnswer,

            ERequestTypeHangup,

            ERequestTypeHold,

            ERequestTypeResume,

            ERequestTypeGoOneToOne,

            ERequestTypeSwap,

            ERequestTypeDialEmergency

            };

        /**

        * Constructs the requester via two phase.

        *

        * @param aObserver the observer for request errors

        * @param aCall ETel RMobileCall reference that is the object

        * of the request.

        */

        static CSPEtelCallRequester* NewL( MCSPCallErrorObserver& aObserver, 

                                           RMobileCall& aCall );

        /**

        * C++ default destructor

        */

        virtual ~CSPEtelCallRequester( );

        /**

        * 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( TRequestType aRequest );

        /**

        * Cancels the request. 

        *

        * @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 CancelRequest( TRequestType aRequest );

        /**

        * Makes a dial request.

        * @since S60 3.2

        * @param aCallParamsPckg call parametrs

        * @param aRemoteParty phone number

        * @return KErrNone if successful, else error code

        */         

        TInt MakeDialRequest( 

            const TDesC8& aCallParams, 

        /**

        * Makes a dial request without FDN check.

        * @since S60 3.2

        * @param aCallParamsPckg call parametrs

        * @param aRemoteParty phone number

        * @return KErrNone if successful, else error code

        */         

        TInt MakeDialNoFdnCheckRequest( 

            const TDesC8& aCallParams, 

        /**

        * Makes a answer request.

        * @since S60 3.2

        * @param aCallParams call parametrs

        * @return KErrNone if successful, else error code

        */         

        TInt MakeAnswerRequest( 

            const TDesC8& aCallParams );

        /**

        * Makes emergency request.

        * @param aRecipient emengency number

        * @return error code

        */

        TInt MakeDialEmergencyRequest( 

            const RMobileENStore::TEmergencyNumber& aRecipient );

        /**

        * Mapping between ETel and CCP errors.

        * @param aErrorCode ETel error code

        * @return CCP error code

        */ 

        TCCPError MapError( TInt aErrorCode );

        /**

        * Getter for the active request.

        * @return request.

        */

        TRequestType Request();

        /**

        * Cancel dial (applies both emergency and normal calls)

        * @return result of cancel (system wide error code)

        */

    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 aObserver the observer for request errors

        * @param aCall ETel RMobileCall reference that is the object

        * of the request.

        */

        CSPEtelCallRequester( MCSPCallErrorObserver& aObserver, 

                              RMobileCall& aCall );

    private: // data

        /**

        * Observer for request errors.

        */

        MCSPCallErrorObserver& iObserver;

        /**

        * ETel call which this monitors

        */

        RMobileCall& iCall;

        /**

        * Type of request.

        */

        TRequestType iRequestType;

    };