#!/usr/bin/env python
# -*- coding: utf-8 -*-

#------------------------------------------------------------------------------

# Copyright 2008-2009 : François Sénéquier
# Email : francois.senequier@netcourrier.com

# This file is part of 'Theorie'.
#
# 'Theorie' 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 3 of the License, or
# any later version.
#
# 'Theorie' 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 'Theorie'.  If not, see <http://www.gnu.org/licenses/>.

#------------------------------------------------------------------------------

class Observable:
	
	def __init__(self):
		self.observers = []
		
	def addObserver(self, obj):
		if obj not in self.observers:
			self.observers.append(obj)
			
	def removeObserver(self, obj):
		self.observers.remove(obj)
		
	def notifyObservers(self, prm):
		for obj in self.observers:
			obj.update(prm)