#ifndef XPARAM_REG_OUTPUT_H
#define XPARAM_REG_OUTPUT_H

/*	Copyright (C) 2001,2002,2003 Ronnie Maor and Michael Brand
 * 
 * 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, 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 software; see the file COPYING.  If not, write to
 * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
 *
 * As a special exception, the copyright holders give permission
 * for additional uses of the text contained in its release of XPARAM.
 *
 * The exception is that, if you link the XPARAM library with other files
 * to produce an executable, this does not by itself cause the
 * resulting executable to be covered by the GNU General Public License.
 * Your use of that executable is in no way restricted on account of
 * linking the XPARAM library code into it.
 *
 * This exception does not however invalidate any other reasons why
 * the executable file might be covered by the GNU General Public License.
 *
 * If you write modifications of your own for XPARAM, it is your choice
 * whether to permit this exception to apply to your modifications.
 * If you do not wish that, delete this exception notice.  
 */

/*
 * Defines the user's API for registering output functions for a class
 */

#include "xp_config.h"
#include "xp_handle.h"
#include "xpv_type.h"
#include "xpv_scheduler.h"
#include "xpv_common_regcom.h"
#include "xpv_subobject_output.h"
#include "xpv_direct_output.h"
#include "xpv_output_functor.h"

#include <iostream>

namespace xParam_internal {

	class OutputRegCommand : public CommonRegCommand {
		public:
			OutputRegCommand(Handle<OutputFunction> f) : CommonRegCommand(f->type()), m_f(f) {}
			
			virtual void do_registration() const {
				Type& t = type_registry().type(m_f->type());
				t.reg_output_function(m_f);
			}

			virtual std::string description() const {
				return std::string("Output function for type ") + m_f->type().name();
			}
		
		private:
			Handle<OutputFunction> m_f;
	};

	template<class T,class F>	
		class param_output {
		public:
			param_output() 
			{
				Handle<OutputFunction> f(new SubObjectOutput<T,F>);
				Handle<RegistrationCommand> command(new OutputRegCommand(f));
				registration_scheduler().add_command(command);
			}
		};

	template<class T,class F=generic_output_functor<T> > 
		class param_direct_output {
		public:
			param_direct_output() 
			{
				Handle<OutputFunction> f(new DirectOutput<T,F>);
				Handle<RegistrationCommand> command(new OutputRegCommand(f));
				registration_scheduler().add_command(command);
			}
		};

} // namespace xParam_internal

#endif // XPARAM_REG_OUTPUT_H
