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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.monitor;
19  
20  import java.io.File;
21  
22  /**
23   * A listener that receives events of filesystem modifications.
24   * The observer basically represents the source of the events.
25   * The file root and its state. (see FilesystemAlterationObserver)
26   * 
27   * @author tcurdt
28   */
29  public interface FilesystemAlterationListener {
30  
31      void onStart( final FilesystemAlterationObserver pObserver );
32      void onFileCreate( final File pFile );
33      void onFileChange( final File pFile );
34      void onFileDelete( final File pFile );
35      void onDirectoryCreate( final File pDir );
36      void onDirectoryChange( final File pDir );
37      void onDirectoryDelete( final File pDir );
38      void onStop( final FilesystemAlterationObserver pObserver );
39  }