01: /*
02:
03: Licensed to the Apache Software Foundation (ASF) under one or more
04: contributor license agreements. See the NOTICE file distributed with
05: this work for additional information regarding copyright ownership.
06: The ASF licenses this file to You under the Apache License, Version 2.0
07: (the "License"); you may not use this file except in compliance with
08: the License. You may obtain a copy of the License at
09:
10: http://www.apache.org/licenses/LICENSE-2.0
11:
12: Unless required by applicable law or agreed to in writing, software
13: distributed under the License is distributed on an "AS IS" BASIS,
14: WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
15: See the License for the specific language governing permissions and
16: limitations under the License.
17:
18: */
19: package org.apache.batik.gvt.event;
20:
21: /**
22: * An abstract adapter class for receiving graphics node change
23: * events. The methods in this class are empty. This class exists as
24: * convenience for creating listener objects.
25: *
26: * <p>Extend this class to create a <tt>GraphicsNodeChangeEvent</tt>
27: * listener and override the methods for the events of interest. (If
28: * you implement the <tt>GraphicsNodeChangeListener</tt> interface, you
29: * have to define all of the methods in it. This abstract class
30: * defines null methods for them all, so you can only have to define
31: * methods for events you care about.)
32: *
33: * @author <a href="mailto:deweese@apache.org">Thomas DeWeese</a>
34: * @version $Id: GraphicsNodeChangeAdapter.java 475477 2006-11-15 22:44:28Z cam $
35: */
36: public abstract class GraphicsNodeChangeAdapter implements
37: GraphicsNodeChangeListener {
38:
39: /**
40: * Invoked when a change has started on a graphics node, but before
41: * any changes occure in the graphics node it's self.
42: * @param gnce the graphics node change event
43: */
44: public void changeStarted(GraphicsNodeChangeEvent gnce) {
45: }
46:
47: /**
48: * Invoked when a change on a graphics node has completed
49: * @param gnce the graphics node change event
50: */
51: public void changeCompleted(GraphicsNodeChangeEvent gnce) {
52: }
53: }
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