// Copyright (c) 1997-2009 Nokia Corporation and/or its subsidiary(-ies).+
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// All rights reserved.+
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// This component and the accompanying materials are made available+
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// under the terms of "Eclipse Public License v1.0"+
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// which accompanies this distribution, and is available+
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// at the URL "http://www.eclipse.org/legal/epl-v10.html".+
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//+
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// Initial Contributors:+
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// Nokia Corporation - initial contribution.+
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//+
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// Contributors:+
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//+
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// Description:+
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// Declares the CSmsCommDBEvent class.+
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// +
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//+
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+
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/**+
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 @file+
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 @internalAll+
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*/+
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+
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#if !defined (SMSPCDB_H__)+
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#define SMSPCDB_H__+
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+
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#include <e32base.h>+
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#include <e32property.h>+
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#include "smspcomm.h"+
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#include "smsstacklog.h"+
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#include "smsuact.h"+
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+
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+
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class TSmsSettings;+
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+
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+
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+
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/**+
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 *  Requests notification of changes in CommDB and in turn notifies an observer,+
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 *  the CSmsProtocol object.+
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 *  +
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 *  Currently this class only waits on changes in the current SMS bearer setting,+
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 *  though it should be extendable for changes in other CommDB settings in the future.+
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 *  +
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 *  The class is a simple active object derived state machine with two states+
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 *  defined by CSmsCommDBEvent::TSmsCommDBEventState.+
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 *  +
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 *  @internalComponent+
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 */+
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class CSmspCommDbEvent : public CSmsuActiveBase+
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	{+
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protected:+
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	~CSmspCommDbEvent();+
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	virtual void ConstructL();+
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	virtual void NotifyOnEvent();+
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	CSmspCommDbEvent(const TSmsSettings& aSmsSettings, RMobileSmsMessaging& aSmsMessaging, TInt aPriority);+
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	void Complete(TInt aError);+
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+
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protected:+
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	// Private members+
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	RProperty iProperty; // Property describing the event we require notification of+
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	const TSmsSettings& iSmsSettings;+
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	RMobileSmsMessaging& iSmsMessaging;+
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	};+
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+
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+
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/**+
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 *  Queries CommDB for the current sms bearer and attempts to change the+
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 *  bearer of the phone.+
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 *  +
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 *  This class works with the classes CSmsCommDBEvent and CSmsProtocol to change+
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 *  the sms bearer when the corresponding setting changes in CommDB.+
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 *  +
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 *  The class is a simple active object derived state machine with these states+
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 *  defined by CSmspSetBearer::TSmsSetBearerState.+
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 *  +
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 *  @internalComponent+
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 */+
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class CSmspSetBearer : public CSmspCommDbEvent+
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	{+
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public:+
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	static CSmspSetBearer* NewL(const TSmsSettings& aSmsSettings, RMobileSmsMessaging& aSmsMessaging, TInt aPriority);+
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	~CSmspSetBearer();+
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	void Start();+
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	void NotifyBearerSet(TRequestStatus& aStatus);+
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+
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protected:+
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	virtual void ConstructL();+
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+
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private:+
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	void DoRunL();+
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	void DoCancel();+
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private:+
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	CSmspSetBearer(const TSmsSettings& aSmsSettings,RMobileSmsMessaging& aSmsMessaging, TInt aPriority);+
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	void SetSmsBearer();+
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	void GetSmsBearerL(RMobileSmsMessaging::TMobileSmsBearer& aBearer);+
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	void NotifyOnEvent();+
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private:+
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	enum TSmsSetBearerState+
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		{+
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		ESmsSetBearerStateInit, 			//< Intial State+
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		ESmsSetBearerNotifyOnEvent, 		//< Wait for notification from property when Bearer changes+
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		ESmsSetBearerStateSettingBearer 	//< Setting the bearer on the current GPRS session+
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		};+
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private:+
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	TSmsSetBearerState iState;				//< The current state of the state machine+
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	RMobileSmsMessaging::TMobileSmsBearer iBearer;	//< The currently used SMS bearer+
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	TBool iBearerSet;						//< Boolean tell is bearer set+
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	RMobileSmsMessaging::TMobileSmsBearer iPreviousBearer; //< The previously used SMS bearer+
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	};+
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+
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/**+
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 *  @internalComponent+
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 */+
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const TInt KSmspReceiveModeCommDbRetryLimit = 5;+
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const TInt KSmspReceiveModeCommDbRetryDelay = 1000000;+
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+
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/**+
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 *  CSmspReceiveMode reads the CommDB global setting SMS_RECEIVE_MODE, compares this to the TSY's SMS capabilities then sets the Receive Mode on the TSY.+
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 *  After setting the Receive Mode, CSmspReceiveMode waits for notification from CommDB for changes in global setting SMS_RECEIVE_MODE.+
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 *  When the global setting has changed, CSmspReceiveMode sets the Receive Mode on the TSY again.+
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 *  @internalComponent+
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 */+
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class CSmspReceiveMode : public CSmspCommDbEvent+
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	{+
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public:+
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+
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	static CSmspReceiveMode* NewL(const TSmsSettings& aSmsSettings, RMobileSmsMessaging& aSmsMessaging, const RMobileSmsMessaging::TMobileSmsCapsV1& aSmsCaps, TInt aPriority);+
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	virtual ~CSmspReceiveMode();+
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	void Start(TRequestStatus& aStatus);+
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+
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protected:+
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	virtual void ConstructL();+
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+
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private:+
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+
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	CSmspReceiveMode(const TSmsSettings& aSmsSettings, RMobileSmsMessaging& aSmsMessaging, const RMobileSmsMessaging::TMobileSmsCapsV1& aSmsCaps, TInt aPriority);+
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	void DoRunL();+
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	void DoCancel();+
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+
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	RMobileSmsMessaging::TMobileSmsReceiveMode SelectReceiveMode(RMobileSmsMessaging::TMobileSmsReceiveMode aPreferredMode) const;+
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	RMobileSmsMessaging::TMobileSmsReceiveMode SelectReceiveMode() const;+
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+
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	void GetCommDbReceiveModeL(RMobileSmsMessaging::TMobileSmsReceiveMode& aReceiveMode);+
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	void NotifyOnEvent();+
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	void SetReceiveMode(RMobileSmsMessaging::TMobileSmsReceiveMode aReceiveMode);+
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+
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private:+
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+
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	enum TSmspReceiveMode+
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		{+
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		ESmspReceiveModeInit,					//< Initial state+
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		ESmspReceiveModeRetryCommDb,			//< Transitory state while waiting for CommDb access+
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		ESmspReceiveModeNotifyOnEvent,			//< Wait for notification from property when Bearer changes+
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		ESmspReceiveModeSet 					//< Setting the Receive Mode on the TSY+
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		} iState;+
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+
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	// When notified that the CommDB has been changed we must re-read SMS_RECEIVE_MODE. Possibly this can transitorily+
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	// fail due to power-up race condition, etc. Hence this suppoer for retrying briefly+
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	TInt	iCommDbRetryCount;					//< Count of retry attempts before giving up+
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	RTimer	iCommDbRetryTimer;+
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	RMobileSmsMessaging::TMobileSmsReceiveMode	iSmsReceiveModeLastSet;	//< Used in the event that CommDb can't be read (rather than simply applying default)+
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+
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	const RMobileSmsMessaging::TMobileSmsCapsV1& iSmsCaps;		//< TSY SMS Capabilities+
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	};+
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+
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#endif // !defined SMSPCDB_H__+
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