/***************************************************************************
 *   Copyright (c) 2007  Nikolaj Hald Nielsen <nhnFreespirit@gmail.com>    *
 *                                                                         *
 *   This program is free software; you can redistribute it and/or modify  *
 *   it under the terms of the GNU General Public License as published by  *
 *   the Free Software Foundation; either version 2 of the License, or     *
 *   (at your option) any later version.                                   *
 *                                                                         *
 *   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 General Public License for more details.                          *
 *                                                                         *
 *   You should have received a copy of the GNU General Public License     *
 *   along with this program; if not, write to the                         *
 *   Free Software Foundation, Inc.,                                       *
 *   51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.         *
 ***************************************************************************/
 
#ifndef AMAROK_SERVICEPLUGINMANAGER_H
#define AMAROK_SERVICEPLUGINMANAGER_H

#include "ServiceBase.h"
#include "ServiceBrowser.h"

#include <QObject>

/**
A class to keep track of available service plugins and load them as needed

    @author
*/
class ServicePluginManager : public QObject
{

    Q_OBJECT

public:
    static ServicePluginManager * instance();

    ~ServicePluginManager();

    void setBrowser( ServiceBrowser * browser );

    /**
     * Collects the factories of all services that can be loaded
     */
    void collect();

    /**
     * Load any services that are configured to be loaded
     */
    void init();

    /**
     * The service settings has been changed... add, remove or reset any affected services
     */
    void settingsChanged();

    void settingsChanged( const QString &pluginName );

    void checkEnabledStates();

    QMap< QString, ServiceFactory* > factories();

public slots:

    QStringList loadedServices();
    QStringList loadedServiceNames();
    QString serviceDescription( const QString &service );
    QString serviceMessages( const QString &service );
    QString sendMessage( const QString &service, const QString &message );

private:
    ServicePluginManager();

    static ServicePluginManager * m_instance;
    ServiceBrowser * m_serviceBrowser;
    QMap< QString, ServiceFactory* > m_factories;
    QStringList m_loadedServices;

private slots:
    void slotNewService( ServiceBase *newService);
    void slotRemoveService( ServiceBase *removedService );
};


#endif //AMAROK_SERVICEPLUGINMANAGER_H

