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 */ 017package org.apache.commons.vfs2; 018 019import org.apache.commons.vfs2.util.Messages; 020 021/** 022 * A {@link org.apache.commons.vfs2.FileSelector} that selects all children of the given fileObject. 023 * <p> 024 * This is to mimic the {@link java.io.FileFilter} interface. 025 */ 026public class FileFilterSelector extends FileDepthSelector { 027 /** 028 * The FileFilter. 029 */ 030 private final FileFilter fileFilter; 031 032 public FileFilterSelector() { 033 this(null); 034 } 035 036 public FileFilterSelector(final FileFilter fileFilter) { 037 super(1, 1); 038 this.fileFilter = fileFilter; 039 } 040 041 /** 042 * Determines if a file or folder should be selected. 043 * 044 * @param fileInfo The file selection information. 045 * @return true if the file or folder should be included, false otherwise. 046 */ 047 @Override 048 public boolean includeFile(final FileSelectInfo fileInfo) { 049 if (!super.includeFile(fileInfo)) { 050 return false; 051 } 052 053 return accept(fileInfo); 054 } 055 056 /** 057 * Determines whether the file should be selected. 058 * 059 * @param fileInfo The file selection information. 060 * @return true if the file should be selected, false otherwise. 061 */ 062 public boolean accept(final FileSelectInfo fileInfo) { 063 if (fileFilter != null) { 064 return fileFilter.accept(fileInfo); 065 } 066 067 throw new IllegalArgumentException(Messages.getString("vfs.selectors/filefilter.missing.error")); 068 } 069}