001/* 002 * Licensed to the Apache Software Foundation (ASF) under one or more 003 * contributor license agreements. See the NOTICE file distributed with 004 * this work for additional information regarding copyright ownership. 005 * The ASF licenses this file to You under the Apache License, Version 2.0 006 * (the "License"); you may not use this file except in compliance with 007 * the License. You may obtain a copy of the License at 008 * 009 * http://www.apache.org/licenses/LICENSE-2.0 010 * 011 * Unless required by applicable law or agreed to in writing, software 012 * distributed under the License is distributed on an "AS IS" BASIS, 013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 014 * See the License for the specific language governing permissions and 015 * limitations under the License. 016 */ 017package org.apache.commons.scxml2.env; 018 019import org.apache.commons.scxml2.SCXMLListener; 020import org.apache.commons.scxml2.model.EnterableState; 021import org.apache.commons.scxml2.model.Transition; 022import org.apache.commons.scxml2.model.TransitionTarget; 023 024/** 025 * An abstract adapter class for the <code>SXCMLListener</code> interface. 026 * This class exists as a convenience for creating listener objects, and as 027 * such all the methods in this class are empty. 028 * 029 * @since 0.7 030 */ 031public abstract class AbstractSCXMLListener implements SCXMLListener { 032 033 /** 034 * @see SCXMLListener#onEntry(EnterableState) 035 */ 036 public void onEntry(final EnterableState state) { 037 // empty 038 } 039 040 /** 041 * @see SCXMLListener#onExit(EnterableState) 042 */ 043 public void onExit(final EnterableState state) { 044 // empty 045 } 046 047 /** 048* @see SCXMLListener#onTransition(TransitionTarget,TransitionTarget,Transition,String) 049 */ 050 public void onTransition(final TransitionTarget from, 051 final TransitionTarget to, final Transition transition, final String event) { 052 // empty 053 } 054 055} 056