// Copyright (c) 1998-2009 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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//+
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+
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#include <e32std.h>+
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#include "MENTACT.H"+
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#include "MSVPANIC.H"+
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+
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+
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//+
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// CMsgActive framework+
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//+
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+
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+
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EXPORT_C CMsgActive::CMsgActive(TInt aPriority)+
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	:CActive(aPriority)+
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	{}+
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+
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+
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EXPORT_C CMsgActive::~CMsgActive()+
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	{+
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	Cancel();		// framework requirement+
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	}+
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+
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+
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EXPORT_C void CMsgActive::Queue(TRequestStatus& aStatus)+
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//+
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// call this last when an asynch operation has been requested+
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//+
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	{+
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	__ASSERT_DEBUG(iReport==NULL, PanicServer(EMsvCMsgActiveAlreadyActive));+
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//+
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	aStatus=KRequestPending;+
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	iReport=&aStatus;+
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	}+
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+
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+
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EXPORT_C void CMsgActive::DoCancel()+
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//+
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// must be called at end of derived classes DoCancel()+
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//+
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	{+
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	TInt result=KErrCancel;+
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	Complete(result);	// can be done safely as asynch reporting+
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	}+
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+
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+
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EXPORT_C void CMsgActive::RunL()+
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//+
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// When the AO is state driven, this form of Run() is very effective+
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// DoRunL() takes the AO through the states, queuing another asynch step as required+
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// if DoRunL() detects the end of the cycle it returns without queuing another cycle.+
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//+
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// If Run() would exit without queuing another cycle it reports completion to the client.+
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// This is true if the asynch step or DoRunL fails, or the state cycle is complete+
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//+
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	{+
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	TInt status=iStatus.Int();+
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	if (status>=KErrNone)+
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		{+
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		TRAPD(error,DoRunL());		// continue operations, may re-queue+
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		__ASSERT_DEBUG(error==KErrNone || !IsActive(),User::Invariant());	// must not requeue in error situations+
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		if (IsActive())				// requeud+
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			return;+
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		status=error;+
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		}+
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	Complete(status);+
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	}+
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+
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+
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EXPORT_C void CMsgActive::Complete(TInt aStatus)+
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	{+
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	if (iReport)+
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		{+
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		// only complete properly once.+
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		// this allows a derived class to complete and then cancel, reporting the desired state instead of KErrCancel+
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		DoComplete(aStatus);+
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		User::RequestComplete(iReport,aStatus);+
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		}+
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	}+
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+
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+
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EXPORT_C void CMsgActive::DoComplete(TInt&)+
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//+
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// Default implementation does nothing+
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//+
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	{}+
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