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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  
18  package org.apache.commons.jci.listeners;
19  
20  import java.io.File;
21  
22  import org.apache.commons.jci.monitor.FilesystemAlterationObserver;
23  
24  /**
25   * The most simple implemenation of an FilesystemAlterationListener.
26   * 
27   * @author tcurdt
28   */
29  public class FileChangeListener extends AbstractFilesystemAlterationListener {
30  
31      private boolean changed;
32      
33      public boolean hasChanged() {
34          return changed;
35      }
36      
37      public void onStart( final FilesystemAlterationObserver pObserver ) {
38          changed = false;
39          super.onStart(pObserver);
40      }
41  
42      public void onStop( final FilesystemAlterationObserver pObserver ) {
43          super.onStop(pObserver);
44      }
45  
46      
47      public void onFileChange( final File pFile ) {
48          changed = true;
49      }
50  
51  
52      public void onFileCreate( final File pFile ) {
53          changed = true;
54      }
55  
56  
57      public void onFileDelete( final File pFile ) {
58          changed = true;
59      }
60  
61  
62      public void onDirectoryChange( final File pDir ) {
63      }
64  
65      public void onDirectoryCreate( final File pDir ) {
66      }
67  
68      public void onDirectoryDelete( final File pDir ) {
69      }
70      
71  }