001    /* 
002     * Copyright 2005 Stephen J. McConnell.
003     *
004     * Licensed  under the  Apache License,  Version 2.0  (the "License");
005     * you may not use  this file  except in  compliance with the License.
006     * You may obtain a copy of the License at 
007     * 
008     *   http://www.apache.org/licenses/LICENSE-2.0
009     * 
010     * Unless required by applicable law or agreed to in writing, software
011     * distributed  under the  License is distributed on an "AS IS" BASIS,
012     * WITHOUT  WARRANTIES OR CONDITIONS  OF ANY KIND, either  express  or
013     * implied.
014     * 
015     * See the License for the specific language governing permissions and
016     * limitations under the License.
017     */
018    
019    package net.dpml.appliance;
020    
021    import java.util.EventListener;
022    
023    import java.rmi.Remote;
024    import java.rmi.RemoteException;
025    
026    /**
027     * Interface implementated by remote listeners to appliance state change events.
028     *
029     * @author <a href="http://www.dpml.net">Digital Product Management Laboratory</a>
030     * @version 2.0.2
031     */
032    public interface ApplianceListener extends EventListener, Remote
033    {
034       /**
035        * Notify the listener of an event within the appliance.
036        *
037        * @param event the appliance event
038        * @exception RemoteException if a remote transport error occurs
039        */
040        void applianceChanged( final ApplianceEvent event ) throws RemoteException;
041    }
042