/*

* Copyright (c) 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:

*

*  Version     : %version: 1 %

*/

#include "bmhelper.h"

#include <QDebug>

BMHelper::BMHelper(int totalSize)

{

    for ( int i(0); i < totalSize; i++)

        mBuffer.append(false);

}

BMHelper::~BMHelper()

{

}

void BMHelper::release(int start, int end)

{

    if ( start<0)

        start = 0;

    if (end>mBuffer.size() - 1)

        end = mBuffer.size() - 1;

    for ( int i = start; i <= end; i++){

        mBuffer.replace(i, false);

    }

}

void BMHelper::request(int start, int end, HgRequestOrder order)

{

    Q_UNUSED(order);

    if ( start<0)

        start = 0;

    if (end>mBuffer.size() - 1)

        end = mBuffer.size() - 1;

    for ( int i = start; i <= end; i++){

        mBuffer.replace(i, true);

    }

}

bool BMHelper::isIntergal(int bufferSize)

{

    int c = mBuffer.count(true);

    bool res = (bufferSize == c);

    if (res){ ///check integrity ( if all items from first true, to size are true;

        int f = mBuffer.indexOf(true);

        for ( int i =0; i < mBuffer.count(); i++){

            if (mBuffer[i] != (i>=f && i < f+bufferSize) ){

                res = false;

                break;

            }

        }

    } else {

        qWarning()<<QString("isIntergal mBuffer.count(true)=%1 bufferSize=%2").arg(c).arg(bufferSize);

    }

    return res;

}

void BMHelper::itemCountChanged( int aIndex, bool aRemoved, int aNewTotalCount )

{

    Q_UNUSED(aRemoved);

    if ( aIndex < 0)

        aIndex = 0;

    if ( aIndex > mBuffer.count())

        aIndex = mBuffer.count()-1;

    if ((mBuffer.count() - aNewTotalCount)>0){

        while (mBuffer.count()!=aNewTotalCount){

            if (aIndex > mBuffer.count() )

                aIndex = mBuffer.count() -1;

            mBuffer.removeAt(aIndex);

        }

    } else if ((mBuffer.count() - aNewTotalCount)<0){

        while (mBuffer.count()!=aNewTotalCount){

            mBuffer.insert(aIndex, false);

        }

    }

}