/****************************************************************************

**

** Copyright (C) 2008-2010 Nokia Corporation and/or its subsidiary(-ies).

** All rights reserved.

** Contact: Nokia Corporation (developer.feedback@nokia.com)

**

** This file is part of the HbCore module of the UI Extensions for Mobile.

**

** GNU Lesser General Public License Usage

** This file may be used under the terms of the GNU Lesser General Public

** License version 2.1 as published by the Free Software Foundation and

** appearing in the file LICENSE.LGPL included in the packaging of this file.

** Please review the following information to ensure the GNU Lesser General

** Public License version 2.1 requirements will be met:

** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.

**

** In addition, as a special exception, Nokia gives you certain additional

** rights.  These rights are described in the Nokia Qt LGPL Exception

** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.

**

** If you have questions regarding the use of this file, please contact

** Nokia at developer.feedback@nokia.com.

**

****************************************************************************/

#include "hbvariant_p.h"

#include <QVariant>

#include <QDebug>

#include "hbmemoryutils_p.h"

#include "hbstring_p.h"

#include "hbsmartoffset_p.h"

/**

 * detach

 * used to support implicit sharing

 */

void HbVariant::detach()

{

    HbVariantData *data = getAddress<HbVariantData>( mMemoryType, mDataOffset, mShared);

    if( data->mRef > 1 || mShared == true ) {

        if( data->mRef > 1 ) {

            data->mRef.deref();

        }

        GET_MEMORY_MANAGER(mMemoryType);

        }

    }

}

/*

* C'tor

*/

HbVariant::HbVariant( HbMemoryManager::MemoryType type )

    : mMemoryType( type ), mShared( false )

{

    initializeData();

}

/*

* C'tor taking int

*/

HbVariant::HbVariant( int val, HbMemoryManager::MemoryType type )

    : mMemoryType( type ), mShared( false )

{

    HbVariantData * data = initializeData();

    if(data){

        data->mData.i = val;

        data->mDataType = Int;

    }

}

/*

* C'tor taking double

*/

HbVariant::HbVariant( double val, HbMemoryManager::MemoryType type )

    : mMemoryType( type ),mShared( false )

{

    HbVariantData * data = initializeData();

    if(data){

        data->mData.d = val;

        data->mDataType = Double;

    }

}

/*

* C'tor taking Qstring

*/

HbVariant::HbVariant( const QString &str, HbMemoryManager::MemoryType type )

    : mMemoryType( type ), mShared( false )

{

    initializeData();

}

/*

* C'tor taking string

*/

HbVariant::HbVariant( const char *val, HbMemoryManager::MemoryType type )

    : mMemoryType( type ), mShared( false )

{

    initializeData();

    QString str = QString::fromAscii(val);

}

/*

* C'tor taking QColor

*/

HbVariant::HbVariant( const QColor &col, HbMemoryManager::MemoryType type )

    : mMemoryType(type), mShared(false)

{

    initializeData();

    fillColorData(col);

}

/*

* copy C'tor

*/

HbVariant::HbVariant( const HbVariant &other )

{

    mMemoryType = other.mMemoryType;

    GET_MEMORY_MANAGER(other.mMemoryType)

    HbVariantData* data = HbMemoryUtils::getAddress<HbVariantData>( mMemoryType, other.mDataOffset );

    mDataOffset = other.mDataOffset;

    if ( !manager->isWritable() || other.mShared == true ) {

        mShared = true;

        mMemoryType = HbMemoryManager::HeapMemory;

    } else {

        mShared = false;

        data->mRef.ref();

    }    

    Q_ASSERT( mMemoryType == HbMemoryManager::SharedMemory 

            || mMemoryType == HbMemoryManager::HeapMemory );

}

/*

* D'tor

*/

HbVariant::~HbVariant()

{

    GET_MEMORY_MANAGER(mMemoryType);

    // if the memory where the variant is not writable it means it's client process, so do nothing

    if( !manager->isWritable() ) 

        return;

    HbVariantData *data= getAddress<HbVariantData>( mMemoryType, mDataOffset, mShared );

    if( mShared != true && !data->mRef.deref() ) {

        clear();

        HbMemoryUtils::freeMemory( mMemoryType, mDataOffset );

    }

}

/*

* to convert to int

*/

int HbVariant::toInt() const

{

    HbVariantData *data = getAddress<HbVariantData>( mMemoryType, mDataOffset, mShared );

    switch(data->mDataType) {

    case HbVariant::Int:

        return data->mData.i;

    case HbVariant::Double:

        return int(data->mData.d);

    case HbVariant::String:

        return int(getString().toLongLong());

    case HbVariant::Color:

    case HbVariant::StringList:

        return 0;

    default:

        return 0;

    }

}

/*

* to convert to string

*/

QString HbVariant::toString() const

{

    HbVariantData *data = getAddress<HbVariantData>( mMemoryType, mDataOffset, mShared );

    switch(data->mDataType) {

    case HbVariant::Int:

        return QString::number(data->mData.i);

    case HbVariant::Double:

        return QString::number(data->mData.d);

    case HbVariant::String:

        return getString();

    case HbVariant::Color:

        return getColor().name();

    case HbVariant::StringList:

        return QString();

    default:

        return QString();

    }

}

/*

* to get QString

*/

QString HbVariant::getString() const

{

    HbVariantData *data = getAddress<HbVariantData>( mMemoryType, mDataOffset, mShared );

    if (data->mData.offset != -1) { 

        QChar* dataPtr = getAddress<QChar>( mMemoryType, data->mData.offset, mShared );

        return QString::fromRawData( dataPtr, data->stringSize );

    } else { // data->mData.offset == -1 is empty String Variant.

        return QString("");

    }

}

/*

* to get QColor

*/

QColor HbVariant::toColor() const

{

    HbVariantData *data = getAddress<HbVariantData>( mMemoryType, mDataOffset, mShared );

    switch(data->mDataType) {

    case HbVariant::String: {

        QColor col = QColor();

        col.setNamedColor(getString());

        return col;

        }

    case HbVariant::Color:

        return getColor();

    case HbVariant::StringList:

    case HbVariant::Int:

    case HbVariant::Double:

        return QColor();

    default:

        return QColor();

    }

}

/*

* to get QColor

*/

QColor HbVariant::getColor() const

{

    HbVariantData *data = getAddress<HbVariantData>( mMemoryType, mDataOffset, mShared );

    return *( getAddress<QColor>(mMemoryType, data->mData.offset, mShared) );

}

/*

* to get stringlist

*/

QStringList HbVariant::toStringList () const

{

    // ToDo: Implement it

    return QStringList();

}

/*

* to get double 

*/

double HbVariant::toDouble() const

{

    HbVariantData *data = getAddress<HbVariantData>( mMemoryType, mDataOffset, mShared );

    switch(data->mDataType) {

    case HbVariant::Int:

        return double(data->mData.i);

    case HbVariant::Double:

        return data->mData.d;

    case HbVariant::String:

        return double(getString().toDouble());

    case HbVariant::Color:

    case HbVariant::StringList:

        return double();

    default:

        return double();

    }

}

/*

* initializeData 

*/

HbVariant::HbVariantData * HbVariant::initializeData()

{

    GET_MEMORY_MANAGER(mMemoryType);

}

/*

* fillStringData 

*/

{

    GET_MEMORY_MANAGER(mMemoryType);

    HbVariantData *data = getAddress<HbVariantData>(mMemoryType, mDataOffset, mShared);

        memcpy(getAddress<char>(mMemoryType, data->mData.offset, mShared),

    }

    data->mDataType = String;

}

/*

* fillColorData 

*/

void HbVariant::fillColorData( const QColor &col )

{

    GET_MEMORY_MANAGER(mMemoryType);

    HbVariantData *data = getAddress<HbVariantData>(mMemoryType, mDataOffset, mShared);

    }

    }

}

/*

* = operator taking int 

*/

HbVariant& HbVariant::operator=(int val)

{

    detach(); // This will update the mDataOffset to new location if ref > 1.

    HbVariantData *data = getAddress<HbVariantData>(mMemoryType, mDataOffset, mShared);

    data->mData.i = val;

    data->mDataType = Int;

    return *this;

}

/*

* = operator taking double 

*/

HbVariant& HbVariant::operator=(double val)

{

    detach(); // This will update the mDataOffset to new location if ref > 1.

    HbVariantData *data = getAddress<HbVariantData>(mMemoryType, mDataOffset, mShared);

    data->mData.d = val;

    data->mDataType = Double;

    return *this;

}

/*

* = operator taking QString 

*/

HbVariant& HbVariant::operator=(const QString& val)

{

    detach(); // This will update the mDataOffset to new location if ref > 1.

    return *this;

}

/*

* = operator taking HbString 

*/

HbVariant& HbVariant::operator=(const HbString& val)

{

    detach(); // This will update the mDataOffset to new location if ref > 1.

    return *this;

}

/*

* = operator taking QColor 

*/

HbVariant& HbVariant::operator=(const QColor& col)

{

    detach(); // This will update the mDataOffset to new location if ref > 1.

    fillColorData(col);

    return *this;

}

/*

* = operator taking QStringList 

*/

HbVariant& HbVariant::operator=(const QStringList& /*strList*/)

{

    // ToDo: Implement it

    return *this;

}

/*

* = operator taking HbVariant 

*/

HbVariant& HbVariant::operator=(const HbVariant &other)

{

    GET_MEMORY_MANAGER(mMemoryType)

    HbVariantData *data = getAddress<HbVariantData>(mMemoryType, mDataOffset, mShared);

    if(other.mMemoryType != mMemoryType || other.mShared == true) {

        if(mShared != true) {

            if(data->mRef == 1) {

                clear();

                HbMemoryUtils::freeMemory(mMemoryType, mDataOffset);

            }else {

                data->mRef.deref();

            }

        }

        mShared = true;

        mMemoryType = HbMemoryManager::HeapMemory;

    } else {

        otherData->mRef.ref();

        if(mShared != true && !data->mRef.deref() ) {

            clear();

            HbMemoryUtils::freeMemory(mMemoryType, mDataOffset);

        }

        mMemoryType = other.mMemoryType;

    }

    mDataOffset = other.mDataOffset;

    Q_ASSERT(mMemoryType == HbMemoryManager::SharedMemory || mMemoryType == HbMemoryManager::HeapMemory);

    return *this;

}

/*

* returns true if the value of variant can be converted to the type passed

*/

bool HbVariant::canConvert (HbVariant::Type t) const

{

    HbVariantData *data = getAddress<HbVariantData>(mMemoryType, mDataOffset, mShared);

    if(data->mDataType == t) {

        return true;

    }

    switch(uint(t)) {

    case HbVariant::Int:

        return data->mDataType == HbVariant::Double 

            || data->mDataType == HbVariant::String;

    case HbVariant::Double:

        return data->mDataType == HbVariant::Int

            || data->mDataType == HbVariant::String;

    case HbVariant::String:

        return data->mDataType == HbVariant::Int

            || data->mDataType == HbVariant::StringList

            || data->mDataType == HbVariant::Double

            || data->mDataType == HbVariant::Color;

    case HbVariant::StringList:

    case HbVariant::Color:

        return data->mDataType == HbVariant::String;

    default :

        return false;

    }

}

/*

* converts the variant to given type

*/

bool HbVariant::convert (HbVariant::Type t)

{

    detach();

    HbVariantData *data = getAddress<HbVariantData>(mMemoryType, mDataOffset, mShared);

    bool ok = true;

    int tempOffset = -1;

    QString str;

    if(data->mDataType == t) {

        return true;

    }

    if (!this->canConvert(t)) {

        return false;

    }

    switch (t) {

    case HbVariant::Int: 

        switch(data->mDataType) {

        case HbVariant::Double: 

            data->mData.i = qRound64(data->mData.d);

            data->mDataType = HbVariant::Int;