/***************************************************************************
 *   Copyright (C) 2005 by Joris Guisson                                   *
 *   joris.guisson@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 KTPLUGINMANAGER_H
#define KTPLUGINMANAGER_H

#include <QList>
#include <QStringList>
#include <QVector>

#include <KPluginInfo>
#include <KPluginMetaData>

#include <util/ptrmap.h>
#include <interfaces/plugin.h>
#include <ktcore_export.h>

namespace kt
{
    class CoreInterface;
    class GUIInterface;
    class PluginActivity;

    /**
     * @author Joris Guisson
     * @brief Class to manage plugins
     *
     * This class manages all plugins. Plugins are stored in a map
     */
    class KTCORE_EXPORT PluginManager
    {
        KPluginInfo::List plugins;
        QVector<KPluginMetaData> pluginsMetaData;
        CoreInterface* core;
        GUIInterface* gui;
        PluginActivity* prefpage;
        bt::PtrMap<int, Plugin> loaded;

    public:
        PluginManager(CoreInterface* core, GUIInterface* gui);
        ~PluginManager();


        /**
         * Get the plugin info list.
         */
        const KPluginInfo::List& pluginInfoList() const {return plugins;}

        /**
         * Load the list of plugins.
         * This basically uses KTrader to get a list of available plugins, and
         * loads those, but does not initialize them. We will consider a plugin loaded
         * when it's load method is called.
         */
        void loadPluginList();

        /**
         * Check the PluginInfo of each plugin and unload or load it if necessary
         */
        void loadPlugins();

        /**
         * Update all plugins who need a periodical GUI update.
         */
        void updateGuiPlugins();

        /**
         * Unload all plugins.
         */
        void unloadAll();
    private:
        void load(const KPluginInfo& pi, int idx);
        void unload(const KPluginInfo& pi, int idx);
    };

}

#endif
