| 1 | /**
|
|---|
| 2 | *#########################################################################
|
|---|
| 3 | *
|
|---|
| 4 | * A component of the Gatherer application, part of the Greenstone digital
|
|---|
| 5 | * library suite from the New Zealand Digital Library Project at the
|
|---|
| 6 | * University of Waikato, New Zealand.
|
|---|
| 7 | *
|
|---|
| 8 | * Author: John Thompson, Greenstone Digital Library, University of Waikato
|
|---|
| 9 | *
|
|---|
| 10 | * Copyright (C) 1999 New Zealand Digital Library Project
|
|---|
| 11 | *
|
|---|
| 12 | * This program is free software; you can redistribute it and/or modify
|
|---|
| 13 | * it under the terms of the GNU General Public License as published by
|
|---|
| 14 | * the Free Software Foundation; either version 2 of the License, or
|
|---|
| 15 | * (at your option) any later version.
|
|---|
| 16 | *
|
|---|
| 17 | * This program is distributed in the hope that it will be useful,
|
|---|
| 18 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|---|
| 19 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|---|
| 20 | * GNU General Public License for more details.
|
|---|
| 21 | *
|
|---|
| 22 | * You should have received a copy of the GNU General Public License
|
|---|
| 23 | * along with this program; if not, write to the Free Software
|
|---|
| 24 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
|
|---|
| 25 | *########################################################################
|
|---|
| 26 | */
|
|---|
| 27 | package org.greenstone.gatherer.cdm;
|
|---|
| 28 |
|
|---|
| 29 | /**************************************************************************************
|
|---|
| 30 | * Written: 08/05/02
|
|---|
| 31 | * Revised: 17/11/02 - Commented
|
|---|
| 32 | * 07/07/03 - DOM support
|
|---|
| 33 | **************************************************************************************/
|
|---|
| 34 | import java.awt.*;
|
|---|
| 35 | import java.awt.event.*;
|
|---|
| 36 | import java.io.*;
|
|---|
| 37 | import java.util.*;
|
|---|
| 38 | import javax.swing.*;
|
|---|
| 39 | import javax.swing.event.*;
|
|---|
| 40 | import org.greenstone.gatherer.Dictionary;
|
|---|
| 41 | import org.greenstone.gatherer.Gatherer;
|
|---|
| 42 | import org.greenstone.gatherer.cdm.CollectionConfiguration;
|
|---|
| 43 | import org.greenstone.gatherer.cdm.CollectionDesignManager;
|
|---|
| 44 | import org.greenstone.gatherer.cdm.Control;
|
|---|
| 45 | import org.greenstone.gatherer.cdm.DOMProxyListModel;
|
|---|
| 46 | import org.greenstone.gatherer.cdm.Language;
|
|---|
| 47 | import org.greenstone.gatherer.cdm.LanguageListCellRenderer;
|
|---|
| 48 | import org.w3c.dom.*;
|
|---|
| 49 |
|
|---|
| 50 | /** This class manages the language commands, remembering both a list of languages to build indexes in, plus the default language.
|
|---|
| 51 | * @author John Thompson, Greenstone Digital Library, University of Waikato
|
|---|
| 52 | * @version 2.3
|
|---|
| 53 | */
|
|---|
| 54 | public class LanguageManager
|
|---|
| 55 | extends DOMProxyListModel {
|
|---|
| 56 |
|
|---|
| 57 | static final private Dimension LABEL_SIZE = new Dimension(125,25);
|
|---|
| 58 |
|
|---|
| 59 | /** The visual controls for this manager. */
|
|---|
| 60 | private Control controls = null;
|
|---|
| 61 | /** A reference to this class as a model, for the inner controls class. */
|
|---|
| 62 | private DOMProxyListModel model = null;
|
|---|
| 63 | /** A hashtable of code->name mappings of known languages. */
|
|---|
| 64 | private LinkedHashMap known_languages = null;
|
|---|
| 65 | /** The default language object. */
|
|---|
| 66 | private Language default_language = null;
|
|---|
| 67 |
|
|---|
| 68 | /** Constructor. */
|
|---|
| 69 | public LanguageManager(Element languages_element) {
|
|---|
| 70 | super(languages_element, CollectionConfiguration.LANGUAGE_ELEMENT, new Language());
|
|---|
| 71 |
|
|---|
| 72 | Gatherer.println("LanguageManager: " + getSize() + " languages parsed.");
|
|---|
| 73 |
|
|---|
| 74 | this.model = this;
|
|---|
| 75 | // Retrieve the default language
|
|---|
| 76 | NodeList default_language_elements = CollectionDesignManager.collect_config.getDocumentElement().getElementsByTagName(CollectionConfiguration.LANGUAGE_DEFAULT_ELEMENT);
|
|---|
| 77 | if(default_language_elements.getLength() > 0) {
|
|---|
| 78 | default_language = new Language((Element)default_language_elements.item(0));
|
|---|
| 79 | }
|
|---|
| 80 | // Load a series of code->language mappings into known_languages, by reading from the 'languages.dat' file, which is essentially a subset of the ISO 639 Standard.
|
|---|
| 81 | known_languages = new LinkedHashMap();
|
|---|
| 82 | try {
|
|---|
| 83 | File in_file = new File("languages.dat");
|
|---|
| 84 | FileReader in_reader = new FileReader(in_file);
|
|---|
| 85 | BufferedReader in = new BufferedReader(in_reader);
|
|---|
| 86 | String entry = null;
|
|---|
| 87 | while((entry = in.readLine()) != null) {
|
|---|
| 88 | if(!entry.startsWith("#")) {
|
|---|
| 89 | StringTokenizer tokenizer = new StringTokenizer(entry);
|
|---|
| 90 | if(tokenizer.countTokens() >= 2) {
|
|---|
| 91 | String name = tokenizer.nextToken();
|
|---|
| 92 | String code = tokenizer.nextToken().toLowerCase();
|
|---|
| 93 | known_languages.put(code, name);
|
|---|
| 94 | }
|
|---|
| 95 | }
|
|---|
| 96 | }
|
|---|
| 97 | in.close();
|
|---|
| 98 | in_reader.close();
|
|---|
| 99 | in = null;
|
|---|
| 100 | in_reader = null;
|
|---|
| 101 | in_file = null;
|
|---|
| 102 | }
|
|---|
| 103 | catch (Exception error) {
|
|---|
| 104 | error.printStackTrace();
|
|---|
| 105 | }
|
|---|
| 106 | }
|
|---|
| 107 |
|
|---|
| 108 | /** Method to add a new language.
|
|---|
| 109 | * @param language The <strong>Language</strong> to add.
|
|---|
| 110 | * @see org.greenstone.gatherer.Gatherer
|
|---|
| 111 | * @see org.greenstone.gatherer.collection.CollectionManager
|
|---|
| 112 | */
|
|---|
| 113 | public void addLanguage(Language language) {
|
|---|
| 114 | if(!contains(language)) {
|
|---|
| 115 | Element element = language.getElement();
|
|---|
| 116 | // Locate where we should insert this new subcollection.
|
|---|
| 117 | Node target_node = CollectionConfiguration.findInsertionPoint(element);
|
|---|
| 118 | // Failing that we insert immediately after a language string
|
|---|
| 119 | add(root, language, target_node);
|
|---|
| 120 | Gatherer.c_man.configurationChanged();
|
|---|
| 121 | }
|
|---|
| 122 | }
|
|---|
| 123 |
|
|---|
| 124 | public void destroy() {
|
|---|
| 125 | if(controls != null) {
|
|---|
| 126 | controls.destroy();
|
|---|
| 127 | controls = null;
|
|---|
| 128 | }
|
|---|
| 129 | known_languages.clear();
|
|---|
| 130 | known_languages = null;
|
|---|
| 131 | }
|
|---|
| 132 |
|
|---|
| 133 | /** Method to retrieve the control for this manager.
|
|---|
| 134 | * @return the Control for editing the language partitions
|
|---|
| 135 | */
|
|---|
| 136 | public Control getControls() {
|
|---|
| 137 | if(controls == null) {
|
|---|
| 138 | // Build controls
|
|---|
| 139 | controls = new LanguageControl();
|
|---|
| 140 | }
|
|---|
| 141 | return controls;
|
|---|
| 142 | }
|
|---|
| 143 |
|
|---|
| 144 | /** Method to retrieve the default language code.
|
|---|
| 145 | * @return A <strong>Language</strong> containing a two letter code.
|
|---|
| 146 | */
|
|---|
| 147 | public Language getDefaultLanguage() {
|
|---|
| 148 | // If no default is set...
|
|---|
| 149 | if(default_language != null && default_language.isAssigned()) {
|
|---|
| 150 | return default_language;
|
|---|
| 151 | }
|
|---|
| 152 | return null;
|
|---|
| 153 | }
|
|---|
| 154 |
|
|---|
| 155 | /** Method to retrieve a certain language object by its code.
|
|---|
| 156 | * @param code The two letter code of a language, as a <strong>String</strong>.
|
|---|
| 157 | * @param assigned_only If <i>true</i> only those languages currently having indexes built for them are checked, otherwise the known languages buffer is checked.
|
|---|
| 158 | * @return The <strong>Language</strong> that matches the given code, or <i>null</i> if no such language exists.
|
|---|
| 159 | */
|
|---|
| 160 | public Language getLanguage(String code) {
|
|---|
| 161 | int size = getSize();
|
|---|
| 162 | for(int i = 0; i < size; i++) {
|
|---|
| 163 | Language language = (Language) getElementAt(i);
|
|---|
| 164 | if(language.getCode().equals(code)) {
|
|---|
| 165 | return language;
|
|---|
| 166 | }
|
|---|
| 167 | }
|
|---|
| 168 | return null;
|
|---|
| 169 | }
|
|---|
| 170 |
|
|---|
| 171 | public ArrayList getLanguages() {
|
|---|
| 172 | return children();
|
|---|
| 173 | }
|
|---|
| 174 |
|
|---|
| 175 | /** Method to return a list of the known language codes.
|
|---|
| 176 | * @return an ArrayList containing the series of known language codes as per the languages.dat file
|
|---|
| 177 | */
|
|---|
| 178 | public ArrayList getLanguageCodes() {
|
|---|
| 179 | return new ArrayList(known_languages.keySet());
|
|---|
| 180 | }
|
|---|
| 181 |
|
|---|
| 182 | public String getLanguageName(String code) {
|
|---|
| 183 | return (String) known_languages.get(code);
|
|---|
| 184 | }
|
|---|
| 185 |
|
|---|
| 186 | /** Method to remove a certain language.
|
|---|
| 187 | * @param language The <strong>Language</strong> to remove.
|
|---|
| 188 | * @see org.greenstone.gatherer.Gatherer
|
|---|
| 189 | * @see org.greenstone.gatherer.collection.CollectionManager
|
|---|
| 190 | */
|
|---|
| 191 | public void removeLanguage(Language language) {
|
|---|
| 192 | remove(language);
|
|---|
| 193 | if(default_language != null && default_language.equals(language)) {
|
|---|
| 194 | default_language = null;
|
|---|
| 195 | }
|
|---|
| 196 | Gatherer.c_man.configurationChanged();
|
|---|
| 197 | }
|
|---|
| 198 |
|
|---|
| 199 | /** Method to set the default language.
|
|---|
| 200 | * @param language The <strong>Language</strong> to use as a default, or <i>null</i> for no default.
|
|---|
| 201 | * @see org.greenstone.gatherer.Gatherer
|
|---|
| 202 | * @see org.greenstone.gatherer.collection.CollectionManager
|
|---|
| 203 | */
|
|---|
| 204 | public void setDefault(Language language) {
|
|---|
| 205 | if(language != null) {
|
|---|
| 206 | if(default_language == null) {
|
|---|
| 207 | // Create the default index element, and place immediately after indexes element.
|
|---|
| 208 | Element default_language_element = root.getOwnerDocument().createElement(CollectionConfiguration.LANGUAGE_DEFAULT_ELEMENT);
|
|---|
| 209 | default_language = new Language(default_language_element);
|
|---|
| 210 | Node target_node = CollectionConfiguration.findInsertionPoint(default_language_element);
|
|---|
| 211 | if(target_node != null) {
|
|---|
| 212 | root.getOwnerDocument().getDocumentElement().insertBefore(default_language_element, target_node);
|
|---|
| 213 | }
|
|---|
| 214 | else {
|
|---|
| 215 | root.getOwnerDocument().getDocumentElement().appendChild(default_language_element);
|
|---|
| 216 | }
|
|---|
| 217 | }
|
|---|
| 218 | default_language.setAssigned(true);
|
|---|
| 219 | default_language.setCode(language.getCode());
|
|---|
| 220 | }
|
|---|
| 221 | else {
|
|---|
| 222 | if(default_language != null) {
|
|---|
| 223 | default_language.setAssigned(false);
|
|---|
| 224 | }
|
|---|
| 225 | }
|
|---|
| 226 | Gatherer.c_man.configurationChanged();
|
|---|
| 227 | }
|
|---|
| 228 |
|
|---|
| 229 |
|
|---|
| 230 | /** This class represents the visual component of the Language Manager. */
|
|---|
| 231 | private class LanguageControl
|
|---|
| 232 | extends JPanel
|
|---|
| 233 | implements Control {
|
|---|
| 234 | /** The button to add a new language support. */
|
|---|
| 235 | private JButton add_button = null;
|
|---|
| 236 | /** The button to clear the current default language. */
|
|---|
| 237 | private JButton clear_button = null;
|
|---|
| 238 | /** The button to remove a supported language. */
|
|---|
| 239 | private JButton remove_button = null;
|
|---|
| 240 | /** The button to set the current language as the default one. */
|
|---|
| 241 | private JButton set_button = null;
|
|---|
| 242 | /** A combobox listing the available supported languages. */
|
|---|
| 243 | private JComboBox selector_combobox = null;
|
|---|
| 244 | /** A list of currently supported languages. */
|
|---|
| 245 | private JList language_list = null;
|
|---|
| 246 | /** A description of the language currently selected. */
|
|---|
| 247 | private JTextArea description_textarea = null;
|
|---|
| 248 | /** The text field showing the currently name of the default language. Non-editable. */
|
|---|
| 249 | private JTextField default_language_field = null;
|
|---|
| 250 | /** Constructor.
|
|---|
| 251 | * @see org.greenstone.gatherer.cdm.LanguageManager.Control.AddListener
|
|---|
| 252 | * @see org.greenstone.gatherer.cdm.LanguageManager.Control.ClearDefaultListener
|
|---|
| 253 | * @see org.greenstone.gatherer.cdm.LanguageManager.Control.ListListener
|
|---|
| 254 | * @see org.greenstone.gatherer.cdm.LanguageManager.Control.RemoveListener
|
|---|
| 255 | * @see org.greenstone.gatherer.cdm.LanguageManager.Control.SelectorListener
|
|---|
| 256 | * @see org.greenstone.gatherer.cdm.LanguageManager.Control.SetDefaultListener
|
|---|
| 257 | * @see org.greenstone.gatherer.cdm.LanguageManager.Control.TranslateListener
|
|---|
| 258 | */
|
|---|
| 259 | public LanguageControl() {
|
|---|
| 260 | super();
|
|---|
| 261 | // Creation.
|
|---|
| 262 | JPanel center_panel = new JPanel();
|
|---|
| 263 |
|
|---|
| 264 | JLabel language_list_label = new JLabel();
|
|---|
| 265 | Dictionary.registerText(language_list_label, "CDM.LanguageManager.Assigned_Languages");
|
|---|
| 266 | language_list = new JList(model);
|
|---|
| 267 |
|
|---|
| 268 | JPanel details_panel = new JPanel();
|
|---|
| 269 |
|
|---|
| 270 | JPanel default_panel = new JPanel();
|
|---|
| 271 |
|
|---|
| 272 | JLabel default_label = new JLabel();
|
|---|
| 273 | default_label.setBorder(BorderFactory.createEmptyBorder(0,0,0,5));
|
|---|
| 274 | default_label.setPreferredSize(LABEL_SIZE);
|
|---|
| 275 | Dictionary.registerText(default_label, "CDM.LanguageManager.Default_Language");
|
|---|
| 276 |
|
|---|
| 277 | if(default_language == null) {
|
|---|
| 278 | default_language_field = new JTextField();
|
|---|
| 279 | }
|
|---|
| 280 | else {
|
|---|
| 281 | default_language_field = new JTextField(default_language.toString());
|
|---|
| 282 | }
|
|---|
| 283 | default_language_field.setBackground(Gatherer.config.getColor("coloring.collection_tree_background", false));
|
|---|
| 284 | default_language_field.setEditable(false);
|
|---|
| 285 | JPanel control_panel = new JPanel();
|
|---|
| 286 |
|
|---|
| 287 | JLabel selector_label = new JLabel();
|
|---|
| 288 | selector_label.setPreferredSize(LABEL_SIZE);
|
|---|
| 289 | Dictionary.registerText(selector_label, "CDM.LanguageManager.Selector");
|
|---|
| 290 |
|
|---|
| 291 | selector_combobox = new JComboBox(getLanguageCodes().toArray());
|
|---|
| 292 | selector_combobox.setBackground(Gatherer.config.getColor("coloring.collection_tree_background", false));
|
|---|
| 293 | selector_combobox.setRenderer(new LanguageListCellRenderer());
|
|---|
| 294 | Dictionary.registerTooltip(selector_combobox, "CDM.LanguageManager.Selector_Tooltip");
|
|---|
| 295 |
|
|---|
| 296 | JPanel button_panel = new JPanel();
|
|---|
| 297 |
|
|---|
| 298 | add_button = new JButton();
|
|---|
| 299 | add_button.setMnemonic(KeyEvent.VK_A);
|
|---|
| 300 | Dictionary.registerBoth(add_button, "CDM.LanguageManager.Add", "CDM.LanguageManager.Add_Tooltip");
|
|---|
| 301 |
|
|---|
| 302 | remove_button = new JButton();
|
|---|
| 303 | remove_button.setMnemonic(KeyEvent.VK_R);
|
|---|
| 304 | remove_button.setEnabled(false);
|
|---|
| 305 | Dictionary.registerBoth(remove_button, "CDM.LanguageManager.Remove", "CDM.LanguageManager.Remove_Tooltip");
|
|---|
| 306 |
|
|---|
| 307 | clear_button = new JButton();
|
|---|
| 308 | clear_button.setMnemonic(KeyEvent.VK_C);
|
|---|
| 309 | clear_button.setEnabled(false);
|
|---|
| 310 | Dictionary.registerBoth(clear_button, "CDM.LanguageManager.Clear_Default", "CDM.LanguageManager.Clear_Default_Tooltip");
|
|---|
| 311 |
|
|---|
| 312 | set_button = new JButton();
|
|---|
| 313 | set_button.setMnemonic(KeyEvent.VK_S);
|
|---|
| 314 | set_button.setEnabled(false);
|
|---|
| 315 | Dictionary.registerBoth(set_button, "CDM.LanguageManager.Set_Default", "CDM.LanguageManager.Set_Default_Tooltip");
|
|---|
| 316 |
|
|---|
| 317 | // Set up and connect listeners.
|
|---|
| 318 | add_button.addActionListener(new AddListener());
|
|---|
| 319 | clear_button.addActionListener(new ClearDefaultListener());
|
|---|
| 320 | remove_button.addActionListener(new RemoveListener());
|
|---|
| 321 | selector_combobox.addActionListener(new SelectorListener());
|
|---|
| 322 | set_button.addActionListener(new SetDefaultListener());
|
|---|
| 323 | language_list.addListSelectionListener(new ListListener());
|
|---|
| 324 |
|
|---|
| 325 | // Layout components
|
|---|
| 326 | default_panel.setBorder(BorderFactory.createCompoundBorder(BorderFactory.createRaisedBevelBorder(), BorderFactory.createEmptyBorder(2,0,2,2)));
|
|---|
| 327 | default_panel.setLayout(new BorderLayout());
|
|---|
| 328 | default_panel.add(default_label, BorderLayout.WEST);
|
|---|
| 329 | default_panel.add(default_language_field, BorderLayout.CENTER);
|
|---|
| 330 |
|
|---|
| 331 | control_panel.setBorder(BorderFactory.createEmptyBorder(5,0,0,0));
|
|---|
| 332 | control_panel.setLayout(new BorderLayout());
|
|---|
| 333 | control_panel.add(selector_label, BorderLayout.WEST);
|
|---|
| 334 | control_panel.add(selector_combobox, BorderLayout.CENTER);
|
|---|
| 335 |
|
|---|
| 336 | details_panel.setBorder(BorderFactory.createEmptyBorder(5,0,5,0));
|
|---|
| 337 | details_panel.setLayout(new BorderLayout());
|
|---|
| 338 | details_panel.add(default_panel, BorderLayout.CENTER);
|
|---|
| 339 | details_panel.add(control_panel, BorderLayout.SOUTH);
|
|---|
| 340 |
|
|---|
| 341 | center_panel.setLayout(new BorderLayout());
|
|---|
| 342 | center_panel.add(language_list_label, BorderLayout.NORTH);
|
|---|
| 343 | center_panel.add(new JScrollPane(language_list), BorderLayout.CENTER);
|
|---|
| 344 | center_panel.add(details_panel, BorderLayout.SOUTH);
|
|---|
| 345 |
|
|---|
| 346 | button_panel.setLayout(new GridLayout(2,2));
|
|---|
| 347 | button_panel.add(add_button);
|
|---|
| 348 | button_panel.add(remove_button);
|
|---|
| 349 | button_panel.add(set_button);
|
|---|
| 350 | button_panel.add(clear_button);
|
|---|
| 351 |
|
|---|
| 352 | setBorder(BorderFactory.createEmptyBorder(5,5,5,5));
|
|---|
| 353 | setLayout(new BorderLayout());
|
|---|
| 354 | add(center_panel, BorderLayout.CENTER);
|
|---|
| 355 | add(button_panel, BorderLayout.SOUTH);
|
|---|
| 356 | }
|
|---|
| 357 |
|
|---|
| 358 | /** Destructor. */
|
|---|
| 359 | public void destroy() {
|
|---|
| 360 | }
|
|---|
| 361 |
|
|---|
| 362 | public void gainFocus() {
|
|---|
| 363 | }
|
|---|
| 364 |
|
|---|
| 365 | public void loseFocus() {
|
|---|
| 366 | }
|
|---|
| 367 |
|
|---|
| 368 | /** Listens for actions apon the 'add' button in the LanguageManager controls, and if detected calls the add method of the manager with a newly created language. */
|
|---|
| 369 | private class AddListener
|
|---|
| 370 | implements ActionListener {
|
|---|
| 371 | /** Add a new language support.
|
|---|
| 372 | * @param event an ActionEvent
|
|---|
| 373 | * @see org.greenstone.gatherer.cdm.Language
|
|---|
| 374 | */
|
|---|
| 375 | public void actionPerformed(ActionEvent event) {
|
|---|
| 376 | String language_code = (String) selector_combobox.getSelectedItem();
|
|---|
| 377 | if(language_code != null) {
|
|---|
| 378 | addLanguage(new Language(language_code));
|
|---|
| 379 | }
|
|---|
| 380 | add_button.setEnabled(false);
|
|---|
| 381 | }
|
|---|
| 382 | }
|
|---|
| 383 |
|
|---|
| 384 | /** Listens for actions apon the 'clear default' button in the LanguageManager controls, and if detected calls the setDefault method of the manager with <i>null</i>. */
|
|---|
| 385 | private class ClearDefaultListener
|
|---|
| 386 | implements ActionListener {
|
|---|
| 387 | /** Clear the default index.
|
|---|
| 388 | * @param event An <strong>ActionEvent</strong>.
|
|---|
| 389 | */
|
|---|
| 390 | public void actionPerformed(ActionEvent event) {
|
|---|
| 391 | setDefault(null);
|
|---|
| 392 | clear_button.setEnabled(false);
|
|---|
| 393 | default_language_field.setText("");
|
|---|
| 394 | }
|
|---|
| 395 | }
|
|---|
| 396 |
|
|---|
| 397 | /** Listens for actions apon the 'remove' button in the LanguageManager controls, and if detected calls the remove method of the manager with the language selected for removal. */
|
|---|
| 398 | private class RemoveListener
|
|---|
| 399 | implements ActionListener {
|
|---|
| 400 | /** Remove the currently selected language, if any.
|
|---|
| 401 | * @param event An <strong>ActionEvent</strong>.
|
|---|
| 402 | * @see org.greenstone.gatherer.cdm.Language
|
|---|
| 403 | */
|
|---|
| 404 | public void actionPerformed(ActionEvent event) {
|
|---|
| 405 | Language delete_me = (Language)language_list.getSelectedValue();
|
|---|
| 406 | if(delete_me != null) {
|
|---|
| 407 | removeLanguage(delete_me);
|
|---|
| 408 | if(default_language != null && default_language.equals(delete_me)) {
|
|---|
| 409 | setDefault(null);
|
|---|
| 410 | clear_button.setEnabled(false);
|
|---|
| 411 | default_language_field.setText("");
|
|---|
| 412 | }
|
|---|
| 413 | }
|
|---|
| 414 | remove_button.setEnabled(false);
|
|---|
| 415 | }
|
|---|
| 416 | }
|
|---|
| 417 |
|
|---|
| 418 | /** Listens for selections within the combobox on the LanguageManager controls, and if a change is detected enables, or disables, controls appropriately. */
|
|---|
| 419 | private class SelectorListener
|
|---|
| 420 | implements ActionListener {
|
|---|
| 421 | /** Enable or disable controls depeding on selection.
|
|---|
| 422 | * @param event An <strong>ActionEvent</strong>.
|
|---|
| 423 | */
|
|---|
| 424 | public void actionPerformed(ActionEvent event) {
|
|---|
| 425 | if(selector_combobox.getSelectedItem() != null) {
|
|---|
| 426 | add_button.setEnabled(true);
|
|---|
| 427 | }
|
|---|
| 428 | else {
|
|---|
| 429 | add_button.setEnabled(false);
|
|---|
| 430 | }
|
|---|
| 431 | }
|
|---|
| 432 | }
|
|---|
| 433 |
|
|---|
| 434 | /** Listens for actions apon the 'set default' button in the LanguageManager controls, and if detected calls the <i>setDefault()</i> method of the manager with the language selected for default. */
|
|---|
| 435 | private class SetDefaultListener
|
|---|
| 436 | implements ActionListener {
|
|---|
| 437 | /** Set the default index to the one currently selected, if any.
|
|---|
| 438 | * @param event An <strong>ActionEvent</strong>.
|
|---|
| 439 | * @see org.greenstone.gatherer.cdm.Language
|
|---|
| 440 | */
|
|---|
| 441 | public void actionPerformed(ActionEvent event) {
|
|---|
| 442 | if(!language_list.isSelectionEmpty()) {
|
|---|
| 443 | setDefault((Language)language_list.getSelectedValue());
|
|---|
| 444 | clear_button.setEnabled(true);
|
|---|
| 445 | default_language_field.setText(default_language.toString());
|
|---|
| 446 | }
|
|---|
| 447 | }
|
|---|
| 448 | }
|
|---|
| 449 |
|
|---|
| 450 | /** Listens for selections within the list on the LanguageManager controls, and if a change is detected enables, or disables, controls appropriately. */
|
|---|
| 451 | private class ListListener
|
|---|
| 452 | implements ListSelectionListener {
|
|---|
| 453 | /** Enable or disable controls depending on the current list selection.
|
|---|
| 454 | * @param event A <strong>ListSelectionEvent</strong>.
|
|---|
| 455 | */
|
|---|
| 456 | public void valueChanged(ListSelectionEvent event) {
|
|---|
| 457 | if(language_list.isSelectionEmpty()) {
|
|---|
| 458 | remove_button.setEnabled(false);
|
|---|
| 459 | set_button.setEnabled(false);
|
|---|
| 460 | }
|
|---|
| 461 | else {
|
|---|
| 462 | remove_button.setEnabled(true);
|
|---|
| 463 | set_button.setEnabled(true);
|
|---|
| 464 | }
|
|---|
| 465 | }
|
|---|
| 466 | }
|
|---|
| 467 | }
|
|---|
| 468 | }
|
|---|
