/*

 * 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: Plugin Loader class

 *

 */

// System Includes

#include <QDir>

#include "debugtraces.h"

#include <QLibraryInfo>

#include <QPluginLoader>

#include "unidatamodelloader.h"

#include "unidatamodelplugininterface.h"

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

//UniDataModelLoader::UniDataModelLoader()

//@see header

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

UniDataModelLoader::UniDataModelLoader()

{

}

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

//UniDataModelLoader::~UniDataModelLoader()

//@see header

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

UniDataModelLoader::~UniDataModelLoader()

{

    QMap<QString, UniDataModelPluginInterface*>::iterator mapItor;

    for (mapItor = mDataModelPluginMap.begin(); mapItor

            != mDataModelPluginMap.end(); ++mapItor)

    {

#ifdef _DEBUG_TRACES_

        qDebug() << "Deleting Handler id:" << mapItor.key();

#endif

        UniDataModelPluginInterface* handler = mapItor.value();

        if (handler)

            delete handler;

    }

    mDataModelPluginMap.clear();

}

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

//UniDataModelLoader::loadPlugins()

//@see header

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

void UniDataModelLoader::loadPlugins()

{

    // plugins directory setting for EMULATOR

#ifdef __WINS__

    QDir dir(QLibraryInfo::location(QLibraryInfo::PluginsPath));

    dir.cd("messaging\\datamodel");

#else

    // plugins directory setting for HARDWARE IMAGE

    QDir dir("Z:\\resource\\qt\\plugins\\messaging\\datamodel");

#endif

    QString pluginPath = dir.absolutePath();

#ifdef _DEBUG_TRACES_

    qDebug() << "Enter LoadPlugin path = " << pluginPath;

#endif

    // load the plugins

    QFileInfoList entries = dir.entryInfoList(QDir::Files | QDir::Readable);

    foreach (QFileInfo entry, entries) 

        {

            QPluginLoader loader(entry.absoluteFilePath());

            // Check if plugin is already loaded...

            if (!loader.isLoaded())

            {

                UniDataModelPluginInterface* datamodelPlugin = qobject_cast<

                        UniDataModelPluginInterface*> (loader.instance());

                if (datamodelPlugin)

                {

                	  UniDataModelPluginInterface* pluginInstance = qobject_cast<

                        UniDataModelPluginInterface*> (datamodelPlugin->createInstance());                        

                    QString mType = pluginInstance->messageType();

                    QDEBUG_WRITE_FORMAT("plugin added to map", mType);

                    mDataModelPluginMap.insert(mType, pluginInstance);

                }

            }

        }

}

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

//UniDataModelLoader::getDataModelPlugin()

//@see header

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

UniDataModelPluginInterface* UniDataModelLoader::getDataModelPlugin(

                                                                    const QString& messageType)

{

    if (mDataModelPluginMap.contains(messageType))

    {

		QDEBUG_WRITE_FORMAT("getDataModelPlugin messageType is present ", messageType);

        return mDataModelPluginMap[messageType];

    }

    return NULL;

}