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    1   /*
    2    * Licensed to the Apache Software Foundation (ASF) under one or more
    3    * contributor license agreements.  See the NOTICE file distributed with
    4    * this work for additional information regarding copyright ownership.
    5    * The ASF licenses this file to You under the Apache License, Version 2.0
    6    * (the "License"); you may not use this file except in compliance with
    7    * the License.  You may obtain a copy of the License at
    8    *
    9    *     http://www.apache.org/licenses/LICENSE-2.0
    10   *
    11   * Unless required by applicable law or agreed to in writing, software
    12   * distributed under the License is distributed on an "AS IS" BASIS,
    13   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    14   * See the License for the specific language governing permissions and
    15   * limitations under the License.
    16   */
    17  package org.apache.commons.scxml.env;
    18
    19  import org.apache.commons.scxml.SCXMLListener;
    20  import org.apache.commons.scxml.model.Transition;
    21  import org.apache.commons.scxml.model.TransitionTarget;
    22
    23  /***
    24   * An abstract adapter class for the <code>SXCMLListener</code> interface.
    25   * This class exists as a convenience for creating listener objects, and as
    26   * such all the methods in this class are empty.
    27   *
    28   * @since 0.7
    29   */
    30  public abstract class AbstractSCXMLListener implements SCXMLListener {
    31
    32      /***
    33       * @see SCXMLListener#onEntry(TransitionTarget)
    34       */
    35      public void onEntry(final TransitionTarget state) {
    36          // empty
    37      }
    38
    39      /***
    40       * @see SCXMLListener#onExit(TransitionTarget)
    41       */
    42      public void onExit(final TransitionTarget state) {
    43          // empty
    44      }
    45
    46      /***
    47  * @see SCXMLListener#onTransition(TransitionTarget,TransitionTarget,Transition)
    48       */
    49      public void onTransition(final TransitionTarget from,
    50              final TransitionTarget to, final Transition transition) {
    51          // empty
    52      }
    53
    54  }
    55