/*
* (c) Copyright 2010-2011 AgileBirds
*
* This file is part of OpenFlexo.
*
* OpenFlexo 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
* (at your option) any later version.
*
* OpenFlexo 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 OpenFlexo. If not, see <http://www.gnu.org/licenses/>.
*
*/
package org.openflexo.foundation;
/**
* A class can implement the <code>FlexoObserver</code> interface when it wants to be informed of changes in observable objects.
*
* @author sguerin
*/
public interface FlexoObserver {
/**
* This method is called whenever the observed object is changed. An application calls an <tt>Observable</tt> object's
* <code>notifyObservers</code> method to have all the object's observers notified of the change.
*
* @param o
* the observable object.
* @param arg
* an argument passed to the <code>notifyObservers</code> method.
*/
public void update(FlexoObservable observable, DataModification dataModification);
}