// src/graphicalterminalio.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 GRAPHICALTERMINALIO_HH
#define GRAPHICALTERMINALIO_HH 1

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

#include <gtkmm/box.h>
#include <gtkmm/entry.h>
#include <gtkmm/textview.h>
#include <gtkmm/window.h>
#include <glibmm/ustring.h>

#include "text_simulation.hh"

#include "io_manager.hh"

namespace sgpem {

  // ---------------------------------------------
  
  class GraphicalTerminalIO;
  
  // ---------------------------------------------
  
  /** \brief Class GraphicalTerminalIO implements the methods requested
   by IOManager using graphichal widgets.
   Consists in a window displaying some textual output and providing a control for text input.
   It is associated with a TextSimulaton, which provide the interpretation and elaboration of the user
   commands.
    */
  class GraphicalTerminalIO : public IOManager, public Gtk::Window
  {
    
  public:
   
	/**
	Creates a GraphichalTerminalIO supported by the specified TextSimulation.
	\param sim the TextSimulation that will support this IOManager.
	*/
	GraphicalTerminalIO(TextSimulation* sim);
    
	/**
	Destructor.
	*/
	virtual ~GraphicalTerminalIO();
    
	/**
	Prints on the window the provided buffer.
	\param buffer the buffer to print.
	*/
	virtual uint			write_buffer(const Glib::ustring& buffer);
    
	/**
    	Reads the user input.
	\return the user input.
	*/
	virtual Glib::ustring 	read_command();
	
	/**
	Returns whether the IOManager can read user input while performing a write operation.
	\return whether the IOManager can read user input while performing a write operation.
	*/
	virtual bool			is_full_duplex();
	
	/**
	Specifies the operations to perform at user input.
	*/
	void 					onSend();
	
  private:
      bool _on_input_commit(GdkEventKey* event);
      
      TextSimulation*		  _sim;
      Gtk::TextView         _text_output;
      mutable Gtk::Entry    _text_input;
      Gtk::Button*          _send;
  };
  
}

#endif