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
018 package org.apache.commons.jci.listeners;
019
020 import java.io.File;
021
022 import org.apache.commons.jci.monitor.FilesystemAlterationObserver;
023
024 /**
025 * The most simple implemenation of an FilesystemAlterationListener.
026 *
027 * @author tcurdt
028 */
029 public class FileChangeListener extends AbstractFilesystemAlterationListener {
030
031 private boolean changed;
032
033 public boolean hasChanged() {
034 return changed;
035 }
036
037 @Override
038 public void onStart( final FilesystemAlterationObserver pObserver ) {
039 changed = false;
040 super.onStart(pObserver);
041 }
042
043 @Override
044 public void onStop( final FilesystemAlterationObserver pObserver ) {
045 super.onStop(pObserver);
046 }
047
048
049 @Override
050 public void onFileChange( final File pFile ) {
051 changed = true;
052 }
053
054
055 @Override
056 public void onFileCreate( final File pFile ) {
057 changed = true;
058 }
059
060
061 @Override
062 public void onFileDelete( final File pFile ) {
063 changed = true;
064 }
065
066
067 @Override
068 public void onDirectoryChange( final File pDir ) {
069 }
070
071 @Override
072 public void onDirectoryCreate( final File pDir ) {
073 }
074
075 @Override
076 public void onDirectoryDelete( final File pDir ) {
077 }
078
079 }