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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.io.filefilter;
18  
19  import java.util.List;
20  
21  /**
22   * Defines operations for conditional file filters.
23   *
24   * @since 1.1
25   */
26  public interface ConditionalFileFilter {
27  
28      /**
29       * Adds the specified file filter to the list of file filters at the end of
30       * the list.
31       *
32       * @param ioFileFilter the filter to be added
33       * @since 1.1
34       */
35      void addFileFilter(IOFileFilter ioFileFilter);
36  
37      /**
38       * Gets this conditional file filter's list of file filters.
39       *
40       * @return the file filter list
41       * @since 1.1
42       */
43      List<IOFileFilter> getFileFilters();
44  
45      /**
46       * Removes the specified file filter.
47       *
48       * @param ioFileFilter filter to be removed
49       * @return {@code true} if the filter was found in the list,
50       * {@code false} otherwise
51       * @since 1.1
52       */
53      boolean removeFileFilter(IOFileFilter ioFileFilter);
54  
55      /**
56       * Sets the list of file filters, replacing any previously configured
57       * file filters on this filter.
58       *
59       * @param fileFilters the list of filters
60       * @since 1.1
61       */
62      void setFileFilters(List<IOFileFilter> fileFilters);
63  
64  }