| /******************************************************************************* |
| * Copyright (C) 2007 The University of Manchester |
| * |
| * Modifications to the initial code base are copyright of their |
| * respective authors, or their employers as appropriate. |
| * |
| * This program is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU Lesser General Public License |
| * as published by the Free Software Foundation; either version 2.1 of |
| * the License, or (at your option) any later version. |
| * |
| * This program is distributed in the hope that it will be useful, but |
| * WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| * Lesser General Public License for more details. |
| * |
| * You should have received a copy of the GNU Lesser General Public |
| * License along with this program; if not, write to the Free Software |
| * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 |
| ******************************************************************************/ |
| /** |
| * This file is a component of the Taverna project, |
| * and is licensed under the GNU LGPL. |
| * Copyright Tom Oinn, EMBL-EBI |
| */ |
| package net.sf.taverna.t2.lang.ui; |
| |
| import java.io.File; |
| import java.util.ArrayList; |
| import java.util.Arrays; |
| import java.util.List; |
| |
| import javax.swing.filechooser.FileFilter; |
| |
| /** |
| * A FileFilter implementation that can be configured to show only specific file |
| * suffixes. |
| * |
| * @author Tom Oinn |
| * @author Stian Soiland-Reyes |
| */ |
| public class ExtensionFileFilter extends FileFilter { |
| List<String> allowedExtensions; |
| |
| public ExtensionFileFilter(List<String> extensions) { |
| setAllowedExtensions(extensions); |
| } |
| |
| public ExtensionFileFilter(String[] allowedExtensions) { |
| setAllowedExtensions(Arrays.asList(allowedExtensions)); |
| } |
| |
| private void setAllowedExtensions(List<String> extensions) { |
| this.allowedExtensions = new ArrayList<String>(); |
| for (String e : extensions) { |
| if (e.startsWith(".")) { |
| if (e.length() > 1) { |
| allowedExtensions.add(e.substring(1)); |
| } |
| } |
| else { |
| allowedExtensions.add(e); |
| } |
| } |
| } |
| |
| @Override |
| public boolean accept(File f) { |
| if (f.isDirectory()) { |
| return true; |
| } |
| String extension = getExtension(f); |
| if (extension != null) { |
| for (String allowedExtension : allowedExtensions) { |
| if (extension.equalsIgnoreCase(allowedExtension)) { |
| return true; |
| } |
| } |
| } |
| return false; |
| } |
| |
| String getExtension(File f) { |
| String ext = null; |
| String s = f.getName(); |
| int i = s.lastIndexOf('.'); |
| if (i > 0 && i < s.length() - 1) { |
| ext = s.substring(i + 1).toLowerCase(); |
| } |
| return ext; |
| } |
| |
| @Override |
| public String getDescription() { |
| StringBuffer sb = new StringBuffer(); |
| sb.append("Filter for extensions : " ); |
| for (int i = 0; i < allowedExtensions.size(); i++) { |
| sb.append(allowedExtensions.get(i)); |
| if (i < allowedExtensions.size() - 1) { |
| sb.append(", "); |
| } |
| } |
| return sb.toString(); |
| } |
| } |