1 // ****************************************************************************** 2 // 3 // Title: Force Field X. 4 // Description: Force Field X - Software for Molecular Biophysics. 5 // Copyright: Copyright (c) Michael J. Schnieders 2001-2024. 6 // 7 // This file is part of Force Field X. 8 // 9 // Force Field X is free software; you can redistribute it and/or modify it 10 // under the terms of the GNU General Public License version 3 as published by 11 // the Free Software Foundation. 12 // 13 // Force Field X is distributed in the hope that it will be useful, but WITHOUT 14 // ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS 15 // FOR A PARTICULAR PURPOSE. See the GNU General Public License for more 16 // details. 17 // 18 // You should have received a copy of the GNU General Public License along with 19 // Force Field X; if not, write to the Free Software Foundation, Inc., 59 Temple 20 // Place, Suite 330, Boston, MA 02111-1307 USA 21 // 22 // Linking this library statically or dynamically with other modules is making a 23 // combined work based on this library. Thus, the terms and conditions of the 24 // GNU General Public License cover the whole combination. 25 // 26 // As a special exception, the copyright holders of this library give you 27 // permission to link this library with independent modules to produce an 28 // executable, regardless of the license terms of these independent modules, and 29 // to copy and distribute the resulting executable under terms of your choice, 30 // provided that you also meet, for each linked independent module, the terms 31 // and conditions of the license of that module. An independent module is a 32 // module which is not derived from or based on this library. If you modify this 33 // library, you may extend this exception to your version of the library, but 34 // you are not obligated to do so. If you do not wish to do so, delete this 35 // exception statement from your version. 36 // 37 // ****************************************************************************** 38 package ffx.potential.parsers; 39 40 import java.io.File; 41 import javax.swing.filechooser.FileFilter; 42 import org.apache.commons.io.FilenameUtils; 43 44 /** 45 * The KeyFileFilter class is used to choose a Force Field X keyword (*.KEY) or property 46 * (*.properties) file. 47 * 48 * @author Michael J. Schnieders 49 * @since 1.0 50 */ 51 public final class KeyFileFilter extends FileFilter { 52 53 /** Default Constructor. */ 54 public KeyFileFilter() { 55 } 56 57 /** 58 * {@inheritDoc} 59 * 60 * <p>This method return <code>true</code> if the file is a directory or Force Field X script 61 * (*.FFX). 62 */ 63 @Override 64 public boolean accept(File file) { 65 if (file.isDirectory()) { 66 return true; 67 } 68 String ext = FilenameUtils.getExtension(file.getName()).toUpperCase(); 69 return ext.startsWith("KEY") || ext.startsWith("PRM") || ext.startsWith("PROPERTIES"); 70 } 71 72 /** 73 * {@inheritDoc} 74 * <p> 75 * Provides a description of the KeyFileFilter. 76 */ 77 @Override 78 public String getDescription() { 79 return "Force Field X Properties (*.KEY, *.PRM, *.PROPERTIES)"; 80 } 81 }