// src/backend/text_simulation.hh - Copyright 2005, 2006, University
//               of Padova, dept. of Pure and Applied
//               Mathematics
//
// This file is part of SGPEMv2.
//
// This 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.
//
// SGPEMv2 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 SGPEMv2; if not, write to the Free Software
// Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA

#ifndef TEXT_SIMULATION_HH
#define TEXT_SIMULATION_HH 1

#include "config.h"
#include "gettext.h"

#include "simulation.hh"
#include "io_manager.hh"
#include "templates/smartp.hh"
#include "backend/policy_parameters.hh"


#include <glibmm/thread.h>
#include <glibmm/ustring.h>
#include <utility>


namespace sgpem
{
	class TextSimulation;

  /** 
    \brief Concrete \ref Simulation subclass with a text-based user interface.

    A command-based interface is used, so methods of the base class can be called with
    a proper command string obtained from the input device(s).
    Any object returned after the call to Simulation will be returned to the output
    devices(s) in a human-readable format.
   */	
	class SG_DLLEXPORT TextSimulation : public Simulation, public sigc::trackable
	{
	public:
		~TextSimulation();
		
		/**
		  \brief Executes a command read from an input device.
		  A list of supported commands follows:
		  
		  \li help \<string\> \br
		  If \<string\> is a valid command, usage instructions are printed 
		  for the command.

		  \li run \br
		  Calls run()

		  \li pause \br
		  Calls pause()

		  \li stop \br
		  Calls stop()

		  \li setmode \<bool\> \br
		  Calls set_mode()

		  \li getmode \br
		  Calls get_mode()

		  \li settimer \<int\> \br
		  Calls set_timer()

		  \li gettimer \br
		  Calls get_timer()
		  
		  \li reset \br
		  Calls reset()

		  \li jumpto \<int\> \br
		  Calls jump_to()

		  \li setpolicy \<string\> \br
		  Calls set_policy()

		  \li getpolicy \br
		  Calls get_policy(), and prints the name and a description of 
		  the returned policy

		  \li getpolicies \br
		  Calls get_avaiable_policies(), and prints a list of policy 
		  descriptions in the same way as getpolicy does

		  \li setpolicyattributes \<name\> = \<value\>; \<name\> = \<value\>; \br
		  Changes the value of the policy's attributes
		  
		  \li  getpolicyattributes
		  Prints the name and the value of the policy's attributes
		 */
		static void	parse_command(std::pair< std::pair<TextSimulation*, IOManager*>, const Glib::ustring >);

		/**
		  Adds an available I/O device.
		 */
		void	add_io_device(memory::smart_ptr<IOManager>);
		
		/**
		  Prints the actual state of the simulation, with emphasis on the current
		  status of the scheduling process (ready queue and running process).
		 */
		void	update();
		
	private:
		std::vector<memory::smart_ptr<IOManager> > _devices;		
		static void	_io_loop(std::pair<TextSimulation*, int>);
	};
  
}


#endif