// Copyright (c) 2007-2009 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:

//

#include "ssmcommandutilprovider.h"

#include "ssmdebug.h"

_LIT( KSysMonProxyDLL, "loadsysmon.dll" );

typedef MSsmLoadSysMon* (*TFuncCreateL)( void );

/**

Factory method that returns pointer to the object of CSsmCommandUtilProvider.

*/

EXPORT_C CSsmCommandUtilProvider* CSsmCommandUtilProvider::NewL()

	{

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

	CleanupStack::PushL(self);

	self->ConstructL();

	CleanupStack::Pop(self);	

	return self;

	}

/**

Returns CStartSafe object

*/

CSsmStartSafe& CSsmCommandUtilProvider::StartSafe()

	{

	return *iStartSafe;

	}

/**

DTOR

*/

EXPORT_C CSsmCommandUtilProvider::~CSsmCommandUtilProvider()

	{

	delete iSysMonSession;

	delete iStartSafe;

	iSysMonProxyLib.Close();

	iFs.Close();

	}

/**

Default CTOR

*/

CSsmCommandUtilProvider::CSsmCommandUtilProvider()

	{

	}

/**

Returns SysMonSession.

@return System monitor session.

@leave KErrNotSupported If NULL is assigned to iSysMonSession.

@leave One of the system wide error code.

@see MSsmLoadSysMon

*/

MSsmLoadSysMon& CSsmCommandUtilProvider::SysMonSessionL()

	{

	if(!iSysMonSession)

		{

		// if iSysMonSession is NULL, then sysmon lib is not installed.

		User::Leave(KErrNotSupported);

		}

	if(iSysMonSession)

		{

		//close the existing session and send the new one to avoid the memory leak.

		iSysMonSession->Close();

		iSysMonSession->OpenL();

		}

	return *iSysMonSession;

	}

/**

This function connects to the RFs if Handle is NULL, and returns the connected RFs.

@return Connected RFs

@

*/

RFs& CSsmCommandUtilProvider::RfsL()

	{

	if (iFs.Handle() == NULL)

		{	

		SSMLOGLEAVEIFERROR(iFs.Connect());		// if not already connected then connect 

		}

	return iFs;

	}

/**

 Load the dll interfacing between us and the System Monitor component, if installed.

*/

void CSsmCommandUtilProvider::LoadMonitorProxyLibL()

	{

	if( KErrNone != iSysMonProxyLib.Load(KSysMonProxyDLL) )

	 	{

	 	return;	

	 	}

	TFuncCreateL sysMonProxyCreateL = reinterpret_cast<TFuncCreateL>(iSysMonProxyLib.Lookup(1));

	iSysMonSession = sysMonProxyCreateL();

	}

	/**

Constructs the object, Creates the startsafe object and SysMonSession.

*/

void CSsmCommandUtilProvider::ConstructL()

	{

	iStartSafe = CSsmStartSafe::NewL(); // Creates CStartSafe object.

	LoadMonitorProxyLibL();

	}