/*

* Copyright (c) 2007-2008 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: 

*      Implementation of utilities functions.   

*      

*

*/

//User includes

#include "wsfdbobserver.h"

#include "wsfaicontroller.h"

#include "wsflogger.h"

#include <featmgr.h>

#include <wlandevicesettingsinternalcrkeys.h> 

#include <centralrepository.h>

const TInt KWlanSettingsUiDefaultScanNetwork = 300;

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

// CWlanPluginDbObserver::CWlanPluginDbObserver

// Constructor

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

CWsfDbObserver::CWsfDbObserver(  ) 

: CActive( EPriorityNormal ),

iOuterScanState( EFalse )

    {

    }

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

// CWlanPluginDbObserver::NewL

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

CWsfDbObserver* CWsfDbObserver::NewL(  )

    {

    CWsfDbObserver* self = new ( ELeave ) CWsfDbObserver( );

    CleanupStack::PushL( self );

    self->ConstructL();

    CleanupStack::Pop();

    return self;

    }

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

// CWlanPluginDbObserver::ConstructL

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

void CWsfDbObserver::ConstructL()

    {

#ifndef __WINS__ // client is not available on wins

    iWlanMgmtClient = CWlanMgmtClient::NewL();

#endif

    FeatureManager::InitializeLibL(); 

    CActiveScheduler::Add(this);

  }

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

// CWlanPluginDbObserver::~CWlanPluginDbObserver

// Destructor

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

CWsfDbObserver::~CWsfDbObserver()

    {

    Cancel();

    delete iRecord;

    delete iSession;

    delete iWlanMgmtClient;

 		FeatureManager::UnInitializeLib();  

    }

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

// CWlanPluginDbObserver::RunL

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

void CWsfDbObserver::RunL()

    {

    LOG_ENTERFN( "CWsfDbObserver::RunL" );        

    //iSession->OpenTransactionL();

    //iRecord->RefreshL( *iSession );

    iRecord->LoadL( *iSession );

    //iSession->CommitTransactionL();        

    //if scanning state changed start or stop the server

    TInt i = iRecord->iBgScanInterval;

    TInt j = iRecord->iSavedBgScanInterval;

    LOG_WRITEF( "CWsfDbObserver::RunL -- Bg:%d bg2:%d O:%d", i, j, iOuterScanState );

    if ( iRecord->iBgScanInterval == 0 && iOuterScanState )

        {

        LOG_WRITE( "CWsfDbObserver::RunL -- Scan disabled" );

        iController->DisableScanL();

        iOuterScanState = EFalse;

        }

    else if(iRecord->iBgScanInterval != 0 && !iOuterScanState )

        {

        LOG_WRITE( "CWsfDbObserver::RunL -- Scan enabled" );

        iController->EnableScanL();

        iOuterScanState = ETrue;

        }

    SetActive();

    iRecord->RequestNotification(*iSession,iStatus);

    }

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

// CWlanPluginDbObserver::DoCancel

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

void CWsfDbObserver::DoCancel()

    {

    iRecord->CancelNotification( *iSession, iStatus );       

    }

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

// CWlanPluginDbObserver::ActivateIt

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

void CWsfDbObserver::ActivateItL()

    {

    iSession = CMDBSession::NewL( KCDLatestVersion );

    TMDBElementId tableId = 0;

    tableId = CCDWlanDeviceSettingsRecord::TableIdL( *iSession );

    iRecord = new( ELeave )

            CCDWlanDeviceSettingsRecord( tableId );         

    iRecord->iWlanDeviceSettingsType = KWlanUserSettings;

    if(iRecord->FindL( *iSession ))

        {

        iRecord->LoadL( *iSession );

        }          

    if ( iRecord->iBgScanInterval != 0 )

        {

        iController->EnableScanL();

        iOuterScanState = ETrue;

        }

    SetActive();

    iRecord->RequestNotification(*iSession,iStatus);

    }

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

// CWlanPluginDbObserver::SetController

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

void CWsfDbObserver::SetController( TWsfAiController* aController )

	{

	iController = aController;

	}

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

// CWlanPluginDbObserver::EnableScanL

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

void CWsfDbObserver::EnableScanL()

    {

	if( !iOuterScanState )

        {

        iSession->OpenTransactionL();

        iRecord->RefreshL( *iSession );

        if ( iRecord->iBgScanInterval == 0 ) // not scanning

        	{

        	TInt j;

        	j = iRecord->iSavedBgScanInterval;

        	if( j == 0 )

        		{

        		j = DefaultScanIntervalL();        		

        		}

        	iRecord->iBgScanInterval = j;

        	iRecord->ModifyL( *iSession );

        	iOuterScanState = ETrue;

        	}

        iSession->CommitTransactionL();

#ifndef __WINS__

        // Notifying WLAN Engine about changes in settings

        iWlanMgmtClient->NotifyChangedSettings();

#endif

        }

    }

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

// CWlanPluginDbObserver::DisableScanL

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

void CWsfDbObserver::DisableScanL()

	{

	if( iOuterScanState )

		{

		iSession->OpenTransactionL();

		iRecord->RefreshL( *iSession );

        if ( iRecord->iBgScanInterval != 0 ) // scanning

        	{

        	TInt i;

        	i = iRecord->iBgScanInterval;

        	iRecord->iBgScanInterval = 0;

        	iRecord->iSavedBgScanInterval = i;

        	iRecord->ModifyL( *iSession );

        	iOuterScanState = EFalse;

        	}

        iSession->CommitTransactionL();

#ifndef __WINS__

        // Notifying WLAN Engine about changes in settings

        iWlanMgmtClient->NotifyChangedSettings();

#endif

		}

	}

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

// CWlanPluginDbObserver::DefaultScanInterval

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

TInt CWsfDbObserver::DefaultScanIntervalL()

    {  

	  	TBool iPsmSupported = FeatureManager::FeatureSupported( KFeatureIdPowerSave );

			if ( iPsmSupported )

				{

    		// Read the default value from CenRep (different in PSM mode)

    		TInt defaultScanInterval( KWlanSettingsUiDefaultScanNetwork );

    		CRepository* repository = CRepository::NewLC( KCRUidWlanDeviceSettingsRegistryId ); 

    		if ( repository )

    			{

      	  	repository->Get( KWlanDefaultBGScanInterval, defaultScanInterval );

    			}     

    		 CleanupStack::PopAndDestroy( repository );

   			 return  defaultScanInterval; 

 				 } 

  		else

				{

   			 return KWlanSettingsUiDefaultScanNetwork;

  			}	

     }