001    /*
002      Copyright (C) 2001-2002 Laurent Martelli <laurent@aopsys.com>
003      
004      This program is free software; you can redistribute it and/or modify
005      it under the terms of the GNU Lesser General Public License as
006      published by the Free Software Foundation; either version 2 of the
007      License, or (at your option) any later version.
008    
009      This program is distributed in the hope that it will be useful, but
010      WITHOUT ANY WARRANTY; without even the implied warranty of
011      MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
012      Lesser General Public License for more details.
013    
014      You should have received a copy of the GNU Lesser General Public
015      License along with this program; if not, write to the Free Software
016      Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
017      USA */
018    
019    package org.objectweb.jac.aspects.gui;
020    
021    import org.objectweb.jac.core.rtti.FieldItem;
022    
023    /**
024     * This interface defines a callback method used to notify that a
025     * field was updated.
026     */
027    public interface FieldUpdate {
028       /**
029        * Upcalled when a field was modified.
030        *
031        * @param substance the object of which a field was updated
032        * @param field the updated field
033        * @param value new value of the vield
034        * @param param extra infos (unused)
035        *
036        * @see ViewControlWrapper#registerField(Wrappee,FieldItem,FieldUpdate,Object)
037        */
038       void fieldUpdated(Object substance, FieldItem field, 
039                         Object value, Object param);
040    }