#ifndef _ExtensionManager_h
#define _ExtensionManager_h

/*
 *	subtitleeditor -- a tool to create or edit subtitle
 *
 *	http://home.gna.org/subtitleeditor/
 *	https://gna.org/projects/subtitleeditor/
 *
 *	Copyright @ 2005-2009, kitone
 *
 *	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 3 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, see <http://www.gnu.org/licenses/>.
 */

#include "extensioninfo.h"
#include <list>
#include <map>

/*
 *
 */
class ExtensionManager
{
public:
	
	/*
	 * Return the ExtensionManager instance.
	 */
	static ExtensionManager& instance();

	/*
	 * Return all ExtensionInfo.
	 */
	std::list<ExtensionInfo*> get_extension_info_list();

	/*
	 * Return all ExtensionInfo in the categorie.
	 */
	std::list<ExtensionInfo*> get_info_list_from_categorie(const Glib::ustring &categorie);

	/*
	 * Return an ExtensionInfo from this name or NULL if failed.
	 */
	ExtensionInfo* get_extension_info(const Glib::ustring &name);

	/*
	 * Enable or disable extension.
	 */
	bool set_extension_active(const Glib::ustring &name, bool state);

	/*
	 * Active and create extensions
	 */
	void create_extensions();

	/*
	 * Delete and close all extensions
	 */
	void destroy_extensions();

protected:

	/*
	 * Constructor
	 */
	ExtensionManager();

	/*
	 * Destructor
	 */
	~ExtensionManager();

	/*
	 * Load the path and sub path to find extension description.
	 * se-plugin file.
	 */
	void load_path(const Glib::ustring &path, bool fhs_directory);

	/*
	 * Try to load an ExtensionInfo file.
	 */
	bool load_extension_info(const Glib::ustring &file, bool fhs_directory);

	/*
	 * Try to activate the extension.
	 * Load and create Extension.
	 */
	bool activate(ExtensionInfo *info);

	/*
	 * Deactivate the extension.
	 * Delete the extension and the module.
	 */
	bool deactivate(ExtensionInfo *info);

	/*
	 * Open a module and create the extension.
	 * If failed return a SubtitleError.
	 */
	void open_module(ExtensionInfo *info);

protected:

	typedef std::map< Glib::ustring, std::list<ExtensionInfo*> > ExtensionInfoMap;

	ExtensionInfoMap m_extension_info_map;
};

#endif//_ExtensionManager_h

