// Copyright (c) 2002-2009 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 <s32file.h>

#include <bautils.h>

#include "DowngradePath.h"

#include "FileUtils.h"

Languages RDowngradePath::iCurrentLanguage;

//overwrite the old array with values in the new array

void CopyLanguageArrayL(Languages& old_array,const Languages& new_array)

	{

	old_array.Reset();

	CleanupClosePushL(old_array);

	for (TInt i=0;i<new_array.Count();i++)

		{

		old_array.AppendL(new_array[i]);

		}

	CleanupStack::Pop();	

	}

void RDowngradePath::Reset()

	{

	iCurrentLanguage.Reset();

	}

/**

Get whether the current downgrade path has changed

@return ETrue if so, EFalse if not.

*/

TBool RDowngradePath::HasChangedL(RFs& aFs)

	{

	TBool hasChanged = EFalse;

	TInt currentLanguageCount=iCurrentLanguage.Count();

	//check current language settings

	if (currentLanguageCount==0)

		{

		CleanupClosePushL(iCurrentLanguage);

		//this is during the server boot time,store this settings

		BaflUtils::GetDowngradePathL(aFs,User::Language(),iCurrentLanguage);

		CleanupStack::Pop();

		return ETrue; 

		}

	else

		{

		//we need to check the new settings against current stored settings

		//this is likely the case during language change notification

		Languages newLanguage;

		CleanupClosePushL(newLanguage);

		// get current system downgrade path			

		BaflUtils::GetDowngradePathL(aFs, User::Language(), newLanguage);

		// path lengths match

		if (currentLanguageCount == newLanguage.Count())

			{

			TInt langs = newLanguage.Count();

			// compare each entry in path

			for (TInt i = 0; i < langs; ++i)

				{

				if (iCurrentLanguage[i] != newLanguage[i])

					{

					hasChanged = ETrue;

					CopyLanguageArrayL(iCurrentLanguage,newLanguage);

					break;

					}

				}

			}

		// path lengths don't match

		else

			{

			CopyLanguageArrayL(iCurrentLanguage,newLanguage);			

			hasChanged = ETrue;

			}

		CleanupStack::PopAndDestroy(&newLanguage);	// cleanup: newLanguage		

		}

	return hasChanged;

	}