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    }