/*

* Copyright (c) 2005 Nokia Corporation and/or its subsidiary(-ies).

* All rights reserved.

* This component and the accompanying materials are made available

* under the terms of the License "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:  Class for making Feed Engine backup and restore aware.

*

*/

#include "BackRestoreHandler.h"

#include "FeedsServer.h"

#include <e32property.h> 			// For RProperty Object;

#include <connect/sbdefs.h>						// for conn Namespace

// -----------------------------------------------------------------------------

// CBackRestoreHandler::NewL

//

// Two-phased constructor.

// -----------------------------------------------------------------------------

//

CBackRestoreHandler* CBackRestoreHandler::NewL(CFeedsServer* aFeedServer)

		{

			CBackRestoreHandler *self = NewLC(aFeedServer);

			CleanupStack::Pop(self);

			return self;

		}

// -----------------------------------------------------------------------------

// CBackRestoreHandler::NewLC

//

// Two-phased constructor.

// -----------------------------------------------------------------------------

//

CBackRestoreHandler* CBackRestoreHandler::NewLC(CFeedsServer* aFeedServer)

		{

			CBackRestoreHandler *self = new (ELeave) CBackRestoreHandler;

			CleanupStack::PushL(self);

			self->ConstructL(aFeedServer);

			return self;

		}

// -----------------------------------------------------------------------------

// CBackRestoreHandler::ConstructL

//

// Symbian 2nd phase constructor can leave.

// -----------------------------------------------------------------------------

//

void CBackRestoreHandler::ConstructL(CFeedsServer* aFeedServer)

		{

			CActiveScheduler::Add(this);

			iFeedServer = aFeedServer;

		}

// -----------------------------------------------------------------------------

// CBackRestoreHandler::~CBackRestoreHandler()

//

// Destructor

// -----------------------------------------------------------------------------

//

CBackRestoreHandler::~CBackRestoreHandler()

		{

			if(iIsListening)

			{

				StopListening();

			}

		}

// -----------------------------------------------------------------------------

// CBackRestoreHandler::CBackRestoreHandler

//

// C++ default constructor can NOT contain any code that

// might leave.

// -----------------------------------------------------------------------------

//

CBackRestoreHandler::CBackRestoreHandler():CActive(EPriorityStandard),iIsListening(EFalse),iIsBkpRestoreInProgress(EFalse)

		{

		}

// -----------------------------------------------------------------------------

// CBackRestoreHandler::RunL()

//

// To Receive event from Subscribe and publish server and

// based on the status of backup or restore operation 

// this function wakes up or makes server sleeping

// -----------------------------------------------------------------------------

//

void CBackRestoreHandler::RunL()

		{

			if(iStatus == KErrNone)

			{

				TInt backupStateValue=-1;

				iProperty.Subscribe(iStatus);

				SetActive();

				iProperty.Get(backupStateValue);

				if((backupStateValue == conn::EBURNormal | conn::ENoBackup )||backupStateValue == 0) // No backup or Restore activities

				{

					if(iIsBkpRestoreInProgress) // Check whether server was made sleeping by this class

					{

						iFeedServer->WakeupServerL();

						iIsBkpRestoreInProgress = EFalse;

					}

				}

				else // Either backup or Restore is in Progress

				{

					if(!iIsBkpRestoreInProgress)  //	Check whether Server is already sleeping

					{

						iFeedServer->SleepServer();

						iIsBkpRestoreInProgress = ETrue;

					}

				}

			}

			else if(iStatus == KErrCancel)

			{

				iIsListening = EFalse;

			}

			else

			{

					iIsListening = EFalse;

			}

		}

// -----------------------------------------------------------------------------

// CBackRestoreHandler::RunError()

//

// -----------------------------------------------------------------------------

//

void CBackRestoreHandler::RunError()

		{

		}

// -----------------------------------------------------------------------------

// CBackRestoreHandler::DoCancel()

//

// -----------------------------------------------------------------------------

//

void CBackRestoreHandler::DoCancel()

		{

			iProperty.Cancel();

		}

// -----------------------------------------------------------------------------

// CBackRestoreHandler::StartListening()

//

// This function subscribe to receive events on active backup or restore activities

// -----------------------------------------------------------------------------

//

void CBackRestoreHandler::StartListening()

		{

			if(!IsActive())

			{

				iProperty.Attach(KUidSystemCategory, KUidBackupRestoreKey);

				iProperty.Subscribe(iStatus);

				SetActive();

				iIsListening = ETrue;

			}

		}

// -----------------------------------------------------------------------------

// CBackRestoreHandler::StopListening()

//

// For cancellation of subscription

// -----------------------------------------------------------------------------

//

void CBackRestoreHandler::StopListening()

		{

			if(IsActive())

			{

				this->Cancel();

				iIsListening = EFalse;

			}

		}