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 */
017 package org.apache.commons.scxml.env;
018
019 import org.apache.commons.scxml.SCXMLListener;
020 import org.apache.commons.scxml.model.Transition;
021 import org.apache.commons.scxml.model.TransitionTarget;
022
023 /**
024 * An abstract adapter class for the <code>SXCMLListener</code> interface.
025 * This class exists as a convenience for creating listener objects, and as
026 * such all the methods in this class are empty.
027 *
028 * @since 0.7
029 */
030 public abstract class AbstractSCXMLListener implements SCXMLListener {
031
032 /**
033 * @see SCXMLListener#onEntry(TransitionTarget)
034 */
035 public void onEntry(final TransitionTarget state) {
036 // empty
037 }
038
039 /**
040 * @see SCXMLListener#onExit(TransitionTarget)
041 */
042 public void onExit(final TransitionTarget state) {
043 // empty
044 }
045
046 /**
047 * @see SCXMLListener#onTransition(TransitionTarget,TransitionTarget,Transition)
048 */
049 public void onTransition(final TransitionTarget from,
050 final TransitionTarget to, final Transition transition) {
051 // empty
052 }
053
054 }
055