001 /* 002 * Copyright (C) 2008-2010 by Holger Arndt 003 * 004 * This file is part of the Universal Java Matrix Package (UJMP). 005 * See the NOTICE file distributed with this work for additional 006 * information regarding copyright ownership and licensing. 007 * 008 * UJMP is free software; you can redistribute it and/or modify 009 * it under the terms of the GNU Lesser General Public License as 010 * published by the Free Software Foundation; either version 2 011 * of the License, or (at your option) any later version. 012 * 013 * UJMP is distributed in the hope that it will be useful, 014 * but WITHOUT ANY WARRANTY; without even the implied warranty of 015 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 016 * GNU Lesser General Public License for more details. 017 * 018 * You should have received a copy of the GNU Lesser General Public 019 * License along with UJMP; if not, write to the 020 * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, 021 * Boston, MA 02110-1301 USA 022 */ 023 024 package org.ujmp.core.util.io; 025 026 import java.awt.Component; 027 import java.io.File; 028 029 import javax.swing.JFileChooser; 030 031 public abstract class FileSelector { 032 033 public static final File selectFile(String label, String suffix) { 034 return selectFile(null, label, suffix); 035 } 036 037 public static final File selectFile(String suffix) { 038 return selectFile(null, "*." + suffix, suffix); 039 } 040 041 public static final File selectFile(Component c, String label, String suffix) { 042 JFileChooser chooser = new JFileChooser(); 043 UJMPFileFilter filter = new UJMPFileFilter(label, suffix); 044 chooser.setFileFilter(filter); 045 int returnVal = chooser.showOpenDialog(c); 046 if (returnVal == JFileChooser.APPROVE_OPTION) { 047 File file = chooser.getSelectedFile(); 048 if (!file.getAbsolutePath().toLowerCase().endsWith(suffix)) 049 file = new File(file.getAbsolutePath() + suffix); 050 return file; 051 } 052 return null; 053 } 054 055 }