/*
* file: FieldListener.java
* author: Jon Iles
* copyright: (c) Packwood Software 2006
* date: March 30, 2005
*/
/*
* This library is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as published by the
* Free Software Foundation; either version 2.1 of the License, or (at your
* option) any later version.
*
* This library 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 Lesser General Public
* License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this library; if not, write to the Free Software Foundation, Inc.,
* 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
*/
package net.sf.mpxj.listener;
import net.sf.mpxj.FieldContainer;
import net.sf.mpxj.FieldType;
/**
* Classes implementing this interface can be used to receive notification
* of changes to task or resource fields.
*/
public interface FieldListener
{
/**
* Called when a field value is changed.
*
* @param container field container
* @param type field type
* @param oldValue old value
* @param newValue new value
*/
public void fieldChange(FieldContainer container, FieldType type, Object oldValue, Object newValue);
}