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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  }