2 * Jalview - A Sequence Alignment Editor and Viewer
\r
3 * Copyright (C) 2005 AM Waterhouse, J Procter, G Barton, M Clamp, S Searle
\r
5 * This program is free software; you can redistribute it and/or
\r
6 * modify it under the terms of the GNU General Public License
\r
7 * as published by the Free Software Foundation; either version 2
\r
8 * of the License, or (at your option) any later version.
\r
10 * This program is distributed in the hope that it will be useful,
\r
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
\r
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
\r
13 * GNU General Public License for more details.
\r
15 * You should have received a copy of the GNU General Public License
\r
16 * along with this program; if not, write to the Free Software
\r
17 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
\r
21 import java.io.File;
\r
25 import javax.swing.filechooser.*;
\r
28 public class JalviewFileFilter extends FileFilter {
\r
29 private static String TYPE_UNKNOWN = "Type Unknown";
\r
30 private static String HIDDEN_FILE = "Hidden File";
\r
31 public static Hashtable suffixHash = new Hashtable();
\r
32 private Hashtable filters = null;
\r
33 private String description = "no description";
\r
34 private String fullDescription = "full description";
\r
35 private boolean useExtensionsInDescription = true;
\r
37 public JalviewFileFilter(String extension, String description) {
\r
38 StringTokenizer st = new StringTokenizer(extension, ",");
\r
40 while (st.hasMoreElements()) {
\r
41 addExtension(st.nextToken().trim());
\r
44 setDescription(description);
\r
47 public JalviewFileFilter(String[] filts) {
\r
51 public JalviewFileFilter(String[] filts, String description) {
\r
52 for (int i = 0; i < filts.length; i++) {
\r
53 // add filters one by one
\r
54 addExtension(filts[i]);
\r
57 if (description != null) {
\r
58 setDescription(description);
\r
62 public String getAcceptableExtension() {
\r
63 return filters.keys().nextElement().toString();
\r
66 // takes account of the fact that database is a directory
\r
67 public boolean accept(File f) {
\r
69 String extension = getExtension(f);
\r
71 if (f.isDirectory()) {
\r
72 if ((extension == null) || extension.equals("")) {
\r
75 if (filters.get(getExtension(f)) != null) {
\r
81 if ((extension != null) && (filters.get(getExtension(f)) != null)) {
\r
89 public String getExtension(File f) {
\r
91 String filename = f.getName();
\r
92 int i = filename.lastIndexOf('.');
\r
94 if ((i > 0) && (i < (filename.length() - 1))) {
\r
95 return filename.substring(i + 1).toLowerCase();
\r
104 public void addExtension(String extension) {
\r
105 if (filters == null) {
\r
106 filters = new Hashtable(5);
\r
109 filters.put(extension.toLowerCase(), this);
\r
110 fullDescription = null;
\r
113 public String getDescription() {
\r
114 if (fullDescription == null) {
\r
115 if ((description == null) || isExtensionListInDescription()) {
\r
116 fullDescription = (description == null) ? "(" : (description +
\r
119 // build the description from the extension list
\r
120 Enumeration extensions = filters.keys();
\r
122 if (extensions != null) {
\r
123 fullDescription += ("." +
\r
124 (String) extensions.nextElement());
\r
126 while (extensions.hasMoreElements()) {
\r
127 fullDescription += (", " +
\r
128 (String) extensions.nextElement());
\r
132 fullDescription += ")";
\r
134 fullDescription = description;
\r
138 return fullDescription;
\r
141 public void setDescription(String description) {
\r
142 this.description = description;
\r
143 fullDescription = null;
\r
146 public void setExtensionListInDescription(boolean b) {
\r
147 useExtensionsInDescription = b;
\r
148 fullDescription = null;
\r
151 public boolean isExtensionListInDescription() {
\r
152 return useExtensionsInDescription;
\r