/**

* Copyright (c) 2003-2009 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:

*

*/

/**

 @file CTelBearer.h

 @internalComponent

*/

#if !defined (__CTELBEARER_H__)

#define __CTELBEARER_H__

#include <comms-infras/cbearerbase.h>

#include <etelmm.h>

#include <etelpckt.h>

#include "sigstrgth.h"

#include "asynwrap.h"

_LIT(KTsyNameExtension,".tsy"); ///< KTsyNameExtension holds the extension for tsy.

NONSHARABLE_CLASS(CTelBearer) : public CBearerBase, public MAsyncRequestsObserver

/**

The class checks the availability of the telephony bearers (i.e. CSD and PSD (either GPRS or CDMA))

@internalComponent

*/

	{

public:

	virtual ~CTelBearer();

	static CTelBearer* NewLC(MBearerObserver* aObserver);

	static CTelBearer* NewL(MBearerObserver* aObserver);

	/** implementation of base class pure virtual */

	virtual TBool StartChecking();

	/** implementation of base class pure virtual */

	virtual TBool StartChecking(TBool aIsReconnect);

	/** implementation of base class pure virtual */

	virtual TBool StopChecking();

	/** implementation of base class pure virtual */

	virtual void Disconnect();

	/** override of base-class function */

	TInt SecondPhaseAvailability();

	/** implementation of MAsyncRequestObserver interface */

	void ETelAsyncRequestsComplete(TETelAsyncRequestData aRequestData);

protected:

	CTelBearer(MBearerObserver* aObserver);

	void ConstructL();

	/** implementation of base class pure virtual */

	virtual void AssignSupportedBearerSet();

private:

	void GetBearerSupportL();

	void OpenTelephonyL();

	void OpenPhoneL(RTelServer& aTelServer, const TDesC& aTsyName, RMobilePhone& aMmPhone);

	void CloseTelephony();

	void RetrievePhoneCapsL();

	void RetrieveNetworkModeL();

	void RetrievePacketSupportL();

	void CalculateAvailableBearerSet();

	TBool CsdAvailable() const;

	TBool PhoneAttachedAndRegistered() const;

	TBool MsClassSupportsPsd() const;

	void CheckBearerSupport();

	static TInt StartCheckingCb(TAny* aThisPtr);

private:

	/** State of ETEL server connection */

	enum TTelServerState

		{

		ENotConnected,

		EServerConnected,

		EPhoneModuleLoaded,

		EPhoneOpen,

		EPacketOpen

		};

private:

	CAsyncCallBack* iStartCheckingCb;

	TBool iIsReconnect;

	RTelServer iTelServer;

	TTelServerState iTelServerState;

	HBufC* iTsyName;

	RMobilePhone iMmPhone;

	CAgentSignalStrengthWatcher* iSigStrengthWatcher;

	RPhone::TCaps iPhoneCaps;

	TUint32 iPhoneMultimodeCaps;

	RMobilePhone::TMobilePhoneNetworkMode iNetworkMode;

	RPacketService iPacket;

	RPacketService::TStatus  iPacketDataNetworkStatus;

	RPacketService::TAttachMode iPacketAttachMode;

	CASyncEtelRequestWrapper* iETelServerRequestsWrapper;

	RPacketService::TMSClass iMsClass;

	RPacketService::TRegistrationStatus iNetworkRegStatus;

	};

#endif // __CTELBEARER_H__