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Object.h

/*
 * Object.h -- class interface for objects
 * Copyright (C) 2002  Eric Lemings <elemings@users.sourceforge.net>
 *
 * This software 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.
 *
 * This software 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; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
 * 02111-1307, USA
 *
 * RCS: $Id: Object.h,v 1.3 2003/04/18 01:41:07 elemings Exp $
 */

#ifdef __cplusplus

#  ifndef OGS_SUPPORT_OBJECT_H
#    define OGS_SUPPORT_OBJECT_H

#    include <list>
#    include <string>

#    include <ogs/support/Namespace.h>

OGS_BEGIN_SUPPORT_NAMESPACE

class Class;
class Event;
class Observer;

class Object {
  public:
    virtual ~Object () = 0;

    void addObserver (Observer& observer);
    void removeObserver (Observer& observer);

    Class getClass () const;
    virtual std::string toString () const;

  protected:
    Object ();

    typedef std::list<Observer*> Observers;
    Observers getObservers () const;
    virtual void notifyObservers (Event& event);

  private:
    Observers _observers;
};

inline Object::Object ():
  _observers () {
  // empty constructor body
}

inline Object::Observers
Object::getObservers () const {
  return (this->_observers);
}

inline Object::~Object () { }

OGS_END_SUPPORT_NAMESPACE

#  endif /* !defined OGS_SUPPORT_OBJECT_H */

#endif /* defined __cplusplus */

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