// 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:

// Contains definitions for classes that implement signal strength functionality.

// 

//

/**

 @file

 @internalAll

*/

#ifndef CSimDtmf_H__

#define CSimDtmf_H__

#include <et_phone.h>

#include "csimtimer.h"

class CSimPhone;

class CTestConfigSection;

/**

 * Implements the RMobilePhone based functions that constitute the signal strength

 * functionality provided by the SIM TSY.

 */

class CSimDtmf : public CBase, MTimerCallBack

	{

public:

	static CSimDtmf* NewL(CSimPhone* aPhone);

	CSimDtmf(CSimPhone* aPhone);

	~CSimDtmf();

	TInt GetDtmfCaps(TTsyReqHandle aReqHandle,TDes8* aPckg1);

	TInt NotifyDtmfCapsChange(TTsyReqHandle aReqHandle,TDes8* aPckg1);

	void NotifyDtmfCapsChangeCancel(TTsyReqHandle aReqHandle);

	TInt SendDTMFTones(TTsyReqHandle aReqHandle,TDes* aPckg1);

	TInt StartDTMFTone(TTsyReqHandle aReqHandle,TDes8* aPckg1);

	TInt StopDTMFTone(TTsyReqHandle aReqHandle);

	TInt NotifyStopInDTMFString(TTsyReqHandle aReqHandle);

	void NotifyStopInDTMFStringCancel();

	TInt ContinueDtmfStringSending(TTsyReqHandle aReqHandle,TDes8* aPckg1);

	void SendDTMFTonesCancel();

	void CallClosureCallback();

	const CTestConfigSection* CfgFile();

private:

	void ConstructL();

	enum TEvent

		{

		EEventStartDtmfString,

		EEventStartDtmfTone,

		EEventTimer,

		EEventStopDtmfTone,

		EEventContinueDtmf,

		EEventTerminateDtmf,

		EEventCallClosure

		};

	TInt ActionEvent(TEvent aEvent);

 	TInt ActionEvent(TEvent aEvent,const TChar& aTone);

 	TInt ProcessTone(const TChar& aTone,TBool aStartTimer);

	void CompleteDtmfStringTx(TInt aStatus);

	void CheckNotification();

	TInt SetDtmfCall();

	TBool CheckForActiveVoiceCall();

	void TimerCallBack(TInt aId);

private:

	CSimPhone* iPhone;		//< Pointer to the parent phone class.

	CSimTimer* iTimer;		//< Pointer to the owned timer class.

	HBufC* iDtmfData;		//< Pointer to buffer holding string of DTMF characters.

	TBool iNotifyStopChar;				//< Flag indicating that a DTMF Stop Notification is outstanding.

	TTsyReqHandle iNotifyStopReqHandle;	//< The request handle associated with an outstanding DTMF Stop Notification.

	enum TState

		{

		EIdle,

		ETxTone,

		EStopped

		};

	TState iState;						//< DTMF Tx engine state.

	TBool iDtmfString;					//< Flag indicating that a DTMF string tx is ongoing.

	TTsyReqHandle iDtmfStringReqPending;//< The request handle associated with an ongoing DTMF string transmission.

	TInt iDtmfStringIndex;				//< The index of the next DTMF character to be processed when tx'ing a DTMF string.

	};

#endif