Desktop/sourceforge/geometria/src/kernel/subject.cpp

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/*
This file is part of geometria.

geometria 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.

geometria 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 geometria; if not, write to the Free Software 
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA

(c) Philipp Moritz, 2006
*/

#include "subject.hpp"

subject::subject()
: m_observers(new std::list<observer*>())
{
}

subject::~subject(void)
{
}

void subject::register_observer(observer *ob)
{
        m_observers->push_back(ob);
}

void subject::unregister_observer(observer *ob)
{
        m_observers->remove(ob);
}

void subject::notice_all_observers()
{
        typedef std::list<observer*>::iterator LI;
        for(LI iter = m_observers->begin(); iter != m_observers->end();iter++)
        {
                (*iter)->update();
        }
}

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