/*

* Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies).

* All rights reserved.

*

* This program is free software: you can redistribute it and/or modify

* it under the terms of the GNU Lesser General Public License as published by

* the Free Software Foundation, version 2.1 of the License.

* 

* This program is distributed in the hope that it will be useful,

* but WITHOUT ANY WARRANTY; without even the implied warranty of

* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

* GNU Lesser General Public License for more details.

*

* You should have received a copy of the GNU Lesser General Public License

* along with this program.  If not, 

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

*

* Description: Private plugin's loader implementation.

*

*/

#ifndef QPLUGINLOADER2PRIVATE_H

#define QPLUGINLOADER2PRIVATE_H

#include <QObject>

#include <QString>

#include <QList>

#include <QtGlobal>

#include <QLibrary>

#include <QSettings>

#include <ecom/implementationinformation.h>

#include <ecom/ecom.h>

class XQPluginInfo;

class XQPluginLoaderPrivate

{

public:

    int pHnd;

    QString fileName;

    const int uid;

    bool loadPlugin(); 

    bool unload();

    void release();

    static XQPluginLoaderPrivate *findOrCreate(const QString &fileName, const QString &version = QString());

    static XQPluginLoaderPrivate *findOrCreate(int, const QString &version = QString());

    QString errorString;

    QLibrary::LoadHints loadHints;

    bool isPlugin(QSettings *settings = 0);

    QObject* instance();

    /**

     * Function retrive plugin description information from ECom framework

     * @param infoArr - plugins description array

     *                  ( definition from ECom framework )

     * @param interfaceName - reqursted plugin interface name

     * @param impls - list of plugin descrpions. plugins implement requested 

     *                interface 

     */ 

    static void listImplementationsL( 

            RImplInfoPtrArray& infoArr, 

            const QString &interfaceName, 

            QList<XQPluginInfo> &impls);

private:

    XQPluginLoaderPrivate( int uid, const QString &version= QString() );

    ~XQPluginLoaderPrivate();

    void loadL();

    static void findOrCreateL( XQPluginLoaderPrivate*& pluginLoader, const QString &fileName, const QString &version );

    void setFileName(const QString& fileName);

    QObject* pluginInstance;

    QAtomicInt loaderRefCount;

    QAtomicInt loaderUnloadCount;    

};

#endif // QPLUGINLOADER2PRIVATE_H