/*
   Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved.

   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License, version 2.0,
   as published by the Free Software Foundation.

   This program is also distributed with certain software (including
   but not limited to OpenSSL) that is licensed under separate terms,
   as designated in a particular file or component or in included license
   documentation.  The authors of MySQL hereby grant you an additional
   permission to link the program and your derivative works with the
   separately licensed software that they have included with MySQL.

   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, version 2.0, for more details.

   You should have received a copy of the GNU General Public License
   along with this program; if not, write to the Free Software
   Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301  USA
*/

#ifndef I_OPTION_INCLUDED
#define I_OPTION_INCLUDED

#include "my_getopt.h"

namespace Mysql{
namespace Tools{
namespace Base{

class Abstract_program;

namespace Options{

class I_option_changed_listener;

/**
  Common interface for all program option objects.
 */
class I_option
{
public:
  virtual ~I_option();

protected:
  /**
    Calls all option value callbacks.
    To be used only from Abstract_program.
   */
  virtual void call_callbacks(char* argument)= 0;
  /**
    Internal method to get my_getopt internal option data structure.
   */
  virtual my_option get_my_option()= 0;

  /**
    Method to set listener on optid changed event.
    For use from Abstract_options_provider class only.
   */
  virtual void set_option_changed_listener(
    I_option_changed_listener* listener)= 0;

  static uint32 last_optid;

  friend class Abstract_options_provider;
  friend class Mysql::Tools::Base::Abstract_program;
};

}
}
}
}

#endif
