/*

* Copyright (c) 2007-2007 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:  This Class provides information of all Application  on phone.

*				 				 

*

*/

#include <e32cmn.h>

#include "appiterator.h"

#include "appinfo.h"

#include "appmanagercommon.h"

#include "appmanagerservice.h"

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

// CAppIterator::NewL

// Returns the instance of CAppIterator class.

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

 CAppIterator* CAppIterator::NewL(RApaLsSession& aApaLsSession ,const CFilterParam* aFilterParam )

	{

	CAppIterator* self = new(ELeave) CAppIterator(aApaLsSession);

	CleanupStack::PushL(self);

	self->ConstructL(aFilterParam);

	CleanupStack::Pop(self);

	return self;

	}

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

// CAppIterator::CAppIterator

// C++ Constructor

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

CAppIterator::CAppIterator(RApaLsSession& aApaLsSession):iApaLsSession(aApaLsSession),iUid(KNullUid),iHandler(EFalse)

	{

	}

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

// CAppIterator::ConstructL

// Two-phase constructor

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

void CAppIterator::ConstructL(const CFilterParam* aFilterParam)

	{

	// If both document name and mimetype are given then document name would be given priority

	if( NULL == aFilterParam)

		{

		//Get all Application

		User::LeaveIfError(iApaLsSession.GetAllApps());	

		}

	else if( (0 != aFilterParam->DocName().Length() ) )	

		{

		CAppManagerService::ValidateFilePathL(aFilterParam->DocName());

		//Get Handler for Document

		iHandler = ETrue;

		TDataType notused;

		User::LeaveIfError(iApaLsSession.AppForDocument(aFilterParam->DocName(), iUid, notused));	

		if (iUid == KNullUid)

			User::Leave(KErrArgument);

		}

	else if( ( 0 != aFilterParam->MimeType().Length() ) )

		{

		 //Get Handler for MIME Type

		 iHandler = ETrue;

		 TDataType datatype( aFilterParam->MimeType() );// Now it is HBufC*

		 /// now makeTDataType object

		 User::LeaveIfError( iApaLsSession.AppForDataType(datatype,iUid) );

		 if (iUid == KNullUid)

		 	User::Leave(KErrArgument);

		}	

    else

        {

        User::Leave( KErrNotFound);    

        }

	}

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

// CAppIterator::~CAppIterator

// Destructor

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

CAppIterator::~CAppIterator()	

	{

	}

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

// CAppIterator::~CAppIterator

// It gives the instance of MInfoMap which contains the information about next application on 

// iterator list.

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

 TBool  CAppIterator::NextL(MInfoMap*& aInfo)

	{

	TApaAppInfo appinfo;

	TBool retValue = ETrue;

	if( KNullUid != iUid && iHandler)

		{

		 //List will return Handler application and it contains only one handler application  

		 User::LeaveIfError (iApaLsSession.GetAppInfo(appinfo, iUid));

		 aInfo = CAppInfo::NewL(appinfo);

		 iHandler = EFalse;

		}

	else if(KNullUid == iUid && iHandler == EFalse)

		{

        //List will return all application

        TInt ret = iApaLsSession.GetNextApp(appinfo);

		if(RApaLsSession::ENoMoreAppsInList  == ret)

			{

			//underlying List finished

			aInfo = NULL;

			retValue = EFalse;	

			}

		else if(KErrNone != ret)

			User::LeaveIfError (ret);//Some error comes

		else

			{

			aInfo = CAppInfo::NewL(appinfo); //send the object of map

			}

		}	

	else

		{

		aInfo = NULL;

		retValue = EFalse;	

		}	

    return retValue;

	}

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

// CAppIterator::Reset

// It resets the iterator

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

void CAppIterator::Reset()

	{

	if( KNullUid != iUid )

		{

	    iHandler = ETrue;

		}

	else

		{

		//reset the underlying iterator to begining

		iApaLsSession.GetAllApps();	

		}

}