/*

* Copyright (c) 2006 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:   This file implements the various types of operations to be performed on model.

*

*/

//INCLUDES 

#include "alf/alfmodeloperation.h"

#include <alf/alfvarianttype.h>

#include <alf/alfexceptions.h>

#include <osn/osnnew.h>

using namespace Alf;

OSN_EXPORT AlfModelOperation* AlfModelOperation::create(

    OperationType aOperation, int aNumContainerIndices,

    int* aContainerIndices, IAlfVariantType* aData )

    {

    return new( EMM ) AlfModelOperation(

        aOperation, aNumContainerIndices, aContainerIndices, aData );

    }

OSN_EXPORT AlfModelOperation* AlfModelOperation::create( OperationType aOperation, int aNumContainerIndices,

    int* aContainerIndices, IAlfVariantType* aData,

    const UString& aDataName )

    {

    return new( EMM ) AlfModelOperation(

        aOperation, aNumContainerIndices, aContainerIndices, aData, aDataName );

    }

AlfModelOperation::AlfModelOperation(

    OperationType aOperation, int aNumContainerIndices,

    int* aContainerIndices, IAlfVariantType* aData )

    {

    mOperation 				= aOperation ;

    mNumContainerIndices 	= aNumContainerIndices;

	mContainerIndices		= aContainerIndices ;

	mData 					= aData;

    }

AlfModelOperation::AlfModelOperation( OperationType aOperation, int aNumContainerIndices,

    int* aContainerIndices, IAlfVariantType* aData,

    const UString& aDataName )

    {

	mOperation 				= aOperation ;

    mNumContainerIndices 	= aNumContainerIndices;

	mContainerIndices		= aContainerIndices ;

	mDataName 				= aDataName;    	

	mData 					= aData;

    }

OSN_EXPORT AlfModelOperation::~AlfModelOperation()

    {

    delete mData;

    delete [] mContainerIndices;

    }

OSN_EXPORT IAlfVariantType& AlfModelOperation::newData() const

    {

	    if(mOperation == EOperationRemove)

	    {

	    	ALF_THROW(AlfDataException,EInvalidModelOperation,"AlfModelOperation")

	    }

        return *mData;

    }

OSN_EXPORT const UString& AlfModelOperation::newDataName() const

    {

	    if(mOperation == EOperationRemove)

	    {

	    	ALF_THROW(AlfDataException,EInvalidModelOperation,"AlfModelOperation")

	    }

        return mDataName;

    }

OSN_EXPORT IAlfVariantType* AlfModelOperation::getNewData()

    {

	    if(mOperation == EOperationRemove)

	    {

	    	ALF_THROW(AlfDataException,EInvalidModelOperation,"AlfModelOperation")

	    }

        IAlfVariantType* data = mData;

        mData = NULL;

        return data;

    }

OSN_EXPORT AlfModelOperation::OperationType AlfModelOperation::operation() const

    {

    return mOperation;

    }

OSN_EXPORT IAlfVariantType* AlfModelOperation::parentData( IAlfVariantType& aRoot ) const

    {

    try

    {

    if ( mNumContainerIndices == 0 )

        {

        return NULL;

        }

    IAlfVariantType* current = &aRoot;

    for ( int i = 0; current && i < mNumContainerIndices - 1; ++i )

        {

        if ( current->type() == IAlfVariantType::EContainer &&

             mContainerIndices[i] < current->container()->count() )

            {

            current = current->container()->item( mContainerIndices[i] );

            }

        else if ( current->type() == IAlfVariantType::EMap &&

                  mContainerIndices[i] < current->map()->count() )

            {

            current = current->map()->item( mContainerIndices[i] );

            }

        else if ( current->type() == IAlfVariantType::EBranch )

            {

            if ( mContainerIndices[i] == 0 )

                {

                // Index 0 is for the parent data

                current = current->branch()->data();

                }

            else if ( mContainerIndices[i] == 1 )

                {

                // Index 1 is for the child data

                current = current->branch()->childData();

                }

            }

        else

            {

            // Not found

            return NULL;

            }

        }

    return current;

	 }

	 catch(AlfDataException& aException)

	 {

	 	ALF_THROW(AlfDataException,EInvalidContainerOperation,"AlfModelOperation")

	 }

    }

OSN_EXPORT int AlfModelOperation::index() const

    {

    return mContainerIndices[mNumContainerIndices - 1];

    }

OSN_EXPORT int AlfModelOperation::numContainerIndices() const

    {

    return mNumContainerIndices;

    }

OSN_EXPORT int AlfModelOperation::containerIndex( int aIndex ) const

    {

    return mContainerIndices[aIndex];

    }