/* -----------------------------------------------------------------------------
	GSFramework
	Copyright 2001-2013 Emmanuel Julien. All Rights Reserved.
----------------------------------------------------------------------------- */


#ifndef	__NREGISTRY__
#define __NREGISTRY__


		#include "metafile/nml.h"
		#include "messaging/messaging.h"


namespace GS {

enum	RegistryMessage
{
	RegistryMsg_None					=	0,		///< No message.
	RegistryMsg_StartKeyChangeBatch,
	RegistryMsg_KeyChange,
	RegistryMsg_EndKeyChangeBatch
};

enum	RegistryRValue
{
	RegistryReturn_Ok					=	0
};

//
struct	RegistryKeyChange
{
		String		key;
		RegistryKeyChange(const char *k) { key = String(k).TrimChar(';'); }
};

struct	Registry;

/// Registry listener.
struct	RegistryListener
{
virtual	RegistryRValue	ProcessMessage(RegistryMessage message, const Registry *from, const void *parm) = 0;
virtual	~RegistryListener() {}
};

/*
	@short	Registry.
	@author	Emmanuel Julien (ejulien@gsworks.fr)
*/
struct	Registry : public Messaging::Broadcaster <RegistryMessage, RegistryListener, Registry *>, public NML::File
{
		NML::Tag		*CreateKey(const char *path, const Variant *value = 0, bool recursive = true);
		NML::Tag		*CreateKey(const char *path, const Variant &value, bool recursive = true);
		bool			DeleteKey(const char *path);

		/// Get the float value of a given key.
		float			GetReal(const char *path, float default_value = 0) const;
		/// Get the boolean value of a given key.
		bool			GetBool(const char *path, bool default_value = false) const;
};

} // GS


#endif	// __NREGISTRY__