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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.vfs;
18  
19  import org.apache.commons.vfs.util.Messages;
20  
21  /***
22   * A {@link org.apache.commons.vfs.FileSelector} that selects all children of the given fileObject.<br />
23   * This is to mimic the {@link java.io.FileFilter} interface
24   *
25   * @author <a href="mailto:imario@apache.org">Mario Ivankovits</a>
26   */
27  public class FileFilterSelector extends FileDepthSelector
28  {
29      private FileFilter fileFilter;
30  
31      public FileFilterSelector()
32      {
33          super(1, 1);
34      }
35  
36      public FileFilterSelector(FileFilter fileFilter)
37      {
38          this();
39          this.fileFilter = fileFilter;
40      }
41  
42      /***
43       * Determines if a file or folder should be selected.
44       */
45      public boolean includeFile(final FileSelectInfo fileInfo)
46      {
47          if (!super.includeFile(fileInfo))
48          {
49              return false;
50          }
51  
52          return accept(fileInfo);
53      }
54  
55      public boolean accept(final FileSelectInfo fileInfo)
56      {
57          if (fileFilter != null)
58          {
59              return fileFilter.accept(fileInfo);
60          }
61  
62          throw new IllegalArgumentException(Messages.getString("vfs.selectors/filefilter.missing.error"));
63      }
64  }