/*

* Copyright (c) 2007-2008 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:  Provides connection for emergency call when necessary

*

*/

#ifndef C_SVPEMERGENCYCONNECTION_H

#define C_SVPEMERGENCYCONNECTION_H

#include <es_sock.h>                // For RSocketServ, RConnection

#include <commdbconnpref.h>         // For TCommDbConnPref

#include <comms-infras/es_config.h> // For TSipServerAddrBuf

#include "svpemergencyconnectionobserver.h"

#include "svputdefs.h"

/**

 *  Connection for emergency call.

 *  Asynchronous services: IAP and SNAP connect, retrieval of used IAP ID of 

 *  SNAP connection, and retrieval of SIP proxy address.

 *

 *  @lib svp.dll

 *  @since S60 v3.2

 */

class CSVPEmergencyConnection : public CActive

    {

public:

    /** Request type */

    enum TSVPRequestType

        {

        ESVPNone, 

        ESVPSnapConnect, 

        ESVPConnect, 

        ESVPSipProxyAddress

        };

    /**

     * Two-phased constructor.

     * @param aPriority Active object priority

     * @param aObserver Observer

     */

    static CSVPEmergencyConnection* NewL( 

        TPriority aPriority, MSVPEmergencyConnectionObserver& aObserver );

    static CSVPEmergencyConnection* NewLC( 

        TPriority aPriority, MSVPEmergencyConnectionObserver& aObserver );

    /**

     * Destructor.

     */

    virtual ~CSVPEmergencyConnection();

    /**

     * Connects with SNAP ID

     *

     * @since S60 v3.2

     * @param aSnapId SNAP ID

     */

    void ConnectWithSnapIdL( TUint32 aSnapId );

    /**

     * Returns the IAP ID used by the SNAP connection

     *

     * @since S60 v3.2

     * @param aIapId IAP ID 

     * @return Error code

     */

    TInt IapId( TUint32& aIapId );

    /**

     * Connects with IAP ID

     *

     * @since S60 v3.2

     * @param aIapId IAP ID 

     */

    void ConnectL( TUint32 aIapId );

    /**

     * Requests for SIP proxy address

     *

     * @since S60 v3.2

     * @param aIapId IAP ID

     */

    void RequestSipProxyAddressL( TUint32 aIapId );

private:

    CSVPEmergencyConnection( 

        TPriority aPriority, MSVPEmergencyConnectionObserver& aObserver );

    void ConstructL();

// from base class CActive

    void DoCancel();

    void RunL();

private: // data

    /**

     * Observer

     */

    MSVPEmergencyConnectionObserver& iObserver;

    /**

     * Request type

     */

    TSVPRequestType iRequestType;

    /**

     * Snap connection preference

     */    

    TCommSnapPref iSnapConnPref;

    /**

     * Connection preference overrider

     */

    TCommDbConnPref iConnPref;

    /**

     * SIP server address buffer

     */

    TSipServerAddrBuf iSipServerAddrBuf;

    /**

     * Connection

     */

    RConnection iConnection;

    /**

     * Socket server

     */

    RSocketServ iSocketServer;

private:

    // For testing

    SVP_UT_DEFS

    };

#endif // C_SVPEMERGENCYCONNECTION_H