src/tim/prune/function/settings/SetLanguage.java

   1 package tim.prune.function.settings;
   2
   3 import java.awt.BorderLayout;
   4 import java.awt.Component;
   5 import java.awt.FlowLayout;
   6 import java.awt.event.ActionEvent;
   7 import java.awt.event.ActionListener;
   8 import java.io.BufferedReader;
   9 import java.io.File;
  10 import java.io.FileReader;
  11 import java.util.Locale;
  12
  13 import javax.swing.BorderFactory;
  14 import javax.swing.Box;
  15 import javax.swing.BoxLayout;
  16 import javax.swing.JButton;
  17 import javax.swing.JComboBox;
  18 import javax.swing.JDialog;
  19 import javax.swing.JFileChooser;
  20 import javax.swing.JLabel;
  21 import javax.swing.JOptionPane;
  22 import javax.swing.JPanel;
  23 import javax.swing.JTextField;
  24 import javax.swing.SwingConstants;
  25 import javax.swing.border.EtchedBorder;
  26
  27 import tim.prune.App;
  28 import tim.prune.GenericFunction;
  29 import tim.prune.I18nManager;
  30 import tim.prune.config.Config;
  31 import tim.prune.load.GenericFileFilter;
  32
  33 /**
  34  * Class to show the popup window for setting the language code / file
  35  */
  36 public class SetLanguage extends GenericFunction
  37 {
  38         private JDialog _dialog = null;
  39         private JComboBox<String> _languageDropDown = null;
  40         private JTextField _langFileBox = null;
  41         private int _startIndex = 0;
  42
  43         /** Names of languages for display in dropdown (not translated) */
  44         private static final String[] LANGUAGE_NAMES = {"afrikaans", "\u010de\u0161tina", "deutsch", "english", "american english",
  45                 "espa\u00F1ol", "fran\u00E7ais", "italiano", "magyar", "nederlands", "polski", "portugu\u00EAs", "rom\u00E2n\u0103",
  46                 "suomi", "\u0440\u0443\u0441\u0441\u043a\u0438\u0439 (russian)", "\u4e2d\u6587 (chinese)",
  47                 "\u65E5\u672C\u8A9E (japanese)", "\uD55C\uAD6D\uC5B4/\uC870\uC120\uB9D0 (korean)", "schwiizerd\u00FC\u00FCtsch"
  48         };
  49         /** Associated language codes (must be in same order as names!) */
  50         private static final String[] LANGUAGE_CODES = {"af", "cz", "de", "en", "en_us", "es", "fr", "it", "hu",
  51                 "nl", "pl", "pt", "ro", "fi", "ru", "zh", "ja", "ko", "de_ch"
  52         };
  53
  54
  55         /**
  56          * Constructor
  57          * @param inApp app object
  58          */
  59         public SetLanguage(App inApp)
  60         {
  61                 super(inApp);
  62         }
  63
  64         /**
  65          * Return the name key for this function
  66          */
  67         public String getNameKey()
  68         {
  69                 return "function.setlanguage";
  70         }
  71
  72         /**
  73          * @return the contents of the window as a Component
  74          */
  75         private Component makeContents()
  76         {
  77                 JPanel mainPanel = new JPanel();
  78                 mainPanel.setLayout(new BorderLayout(0, 5));
  79                 JPanel midPanel = new JPanel();
  80                 midPanel.setLayout(new BoxLayout(midPanel, BoxLayout.Y_AXIS));
  81                 midPanel.setBorder(BorderFactory.createEmptyBorder(3, 3, 3, 3));
  82                 // description labels
  83                 JLabel label1 = new JLabel("<html>" + I18nManager.getText("dialog.setlanguage.firstintro") + "</html>");
  84                 label1.setAlignmentX(Component.LEFT_ALIGNMENT);
  85                 label1.setHorizontalAlignment(SwingConstants.LEFT);
  86                 midPanel.add(label1);
  87                 JLabel label2 = new JLabel("<html>" + I18nManager.getText("dialog.setlanguage.secondintro") + "</html>");
  88                 label2.setAlignmentX(Component.LEFT_ALIGNMENT);
  89                 label2.setHorizontalAlignment(SwingConstants.LEFT);
  90                 midPanel.add(label2);
  91                 midPanel.add(Box.createVerticalStrut(10));
  92
  93                 // built-in languages
  94                 JPanel builtinPanel = new JPanel();
  95                 builtinPanel.setBorder(BorderFactory.createCompoundBorder(
  96                         BorderFactory.createEtchedBorder(EtchedBorder.LOWERED), BorderFactory.createEmptyBorder(3, 3, 3, 3))
  97                 );
  98                 builtinPanel.setLayout(new BoxLayout(builtinPanel, BoxLayout.X_AXIS));
  99                 builtinPanel.add(new JLabel(I18nManager.getText("dialog.setlanguage.language") + " : "));
 100                 // Language dropdown
 101                 _languageDropDown = new JComboBox<String>(LANGUAGE_NAMES);
 102                 builtinPanel.add(_languageDropDown);
 103                 builtinPanel.add(Box.createHorizontalGlue());
 104                 JButton selectLangButton = new JButton(I18nManager.getText("button.select"));
 105                 selectLangButton.addActionListener(new ActionListener() {
 106                         public void actionPerformed(ActionEvent e) {
 107                                 selectLanguage();
 108                         }
 109                 });
 110                 builtinPanel.add(selectLangButton);
 111                 builtinPanel.setAlignmentX(Component.LEFT_ALIGNMENT);
 112                 midPanel.add(builtinPanel);
 113                 midPanel.add(Box.createVerticalStrut(4));
 114
 115                 // external language file
 116                 JPanel extraPanel = new JPanel();
 117                 extraPanel.setBorder(BorderFactory.createCompoundBorder(
 118                         BorderFactory.createEtchedBorder(EtchedBorder.LOWERED), BorderFactory.createEmptyBorder(3, 3, 3, 3))
 119                 );
 120                 extraPanel.setLayout(new BoxLayout(extraPanel, BoxLayout.X_AXIS));
 121                 extraPanel.add(new JLabel(I18nManager.getText("dialog.setlanguage.languagefile") + " : "));
 122                 _langFileBox = new JTextField("some_long_example_file_path.txt");
 123                 extraPanel.add(_langFileBox);
 124                 // browse button
 125                 JButton browseButton = new JButton(I18nManager.getText("button.browse"));
 126                 extraPanel.add(browseButton);
 127                 browseButton.addActionListener(new ActionListener() {
 128                         public void actionPerformed(ActionEvent arg0) {
 129                                 chooseFile();
 130                         }
 131                 });
 132                 extraPanel.add(Box.createHorizontalStrut(5));
 133                 JButton selectFileButton = new JButton(I18nManager.getText("button.select"));
 134                 selectFileButton.addActionListener(new ActionListener() {
 135                         public void actionPerformed(ActionEvent e) {
 136                                 selectLanguageFile();
 137                         }
 138                 });
 139                 extraPanel.add(selectFileButton);
 140                 extraPanel.setAlignmentX(Component.LEFT_ALIGNMENT);
 141                 midPanel.add(Box.createVerticalStrut(5));
 142                 midPanel.add(extraPanel);
 143                 midPanel.add(Box.createVerticalGlue());
 144                 mainPanel.add(midPanel, BorderLayout.CENTER);
 145
 146                 // Cancel button at the bottom
 147                 JPanel buttonPanel = new JPanel();
 148                 buttonPanel.setLayout(new FlowLayout(FlowLayout.RIGHT));
 149                 JButton cancelButton = new JButton(I18nManager.getText("button.cancel"));
 150                 cancelButton.addActionListener(new ActionListener() {
 151                         public void actionPerformed(ActionEvent e)
 152                         {
 153                                 _dialog.dispose();
 154                         }
 155                 });
 156                 buttonPanel.add(cancelButton);
 157                 mainPanel.add(buttonPanel, BorderLayout.SOUTH);
 158                 return mainPanel;
 159         }
 160
 161
 162         /**
 163          * Show window
 164          */
 165         public void begin()
 166         {
 167                 if (_dialog == null)
 168                 {
 169                         _dialog = new JDialog(_parentFrame, I18nManager.getText(getNameKey()));
 170                         _dialog.setLocationRelativeTo(_parentFrame);
 171                         _dialog.getContentPane().add(makeContents());
 172                         _dialog.pack();
 173                 }
 174                 // Try to use code from config
 175                 String code = Config.getConfigString(Config.KEY_LANGUAGE_CODE);
 176                 int index = getLanguageIndex(code);
 177                 // If it's not present, then use system locale settings
 178                 if (index < 0) {
 179                         Locale locale = Locale.getDefault();
 180                         index = getLanguageIndex(locale.getLanguage() + "_" + locale.getCountry());
 181                         if (index < 0) {
 182                                 index = getLanguageIndex(locale.getLanguage());
 183                         }
 184                 }
 185                 // Select appropriate language from dropdown
 186                 if (index >= 0) {
 187                         _languageDropDown.setSelectedIndex(index);
 188                 }
 189                 _startIndex = _languageDropDown.getSelectedIndex();
 190                 // Get language file from config
 191                 String langfile = Config.getConfigString(Config.KEY_LANGUAGE_FILE);
 192                 _langFileBox.setText(langfile==null?"":langfile);
 193                 _dialog.setVisible(true);
 194         }
 195
 196         /**
 197          * Find the index of the given language code
 198          * @param inCode code to look for
 199          * @return index if found or -1
 200          */
 201         private static int getLanguageIndex(String inCode)
 202         {
 203                 int idx = -1;
 204                 if (inCode != null && !inCode.equals("")) {
 205                         for (int i=0; i<LANGUAGE_CODES.length; i++) {
 206                                 if (LANGUAGE_CODES[i].equalsIgnoreCase(inCode)) {
 207                                         idx = i;
 208                                 }
 209                         }
 210                 }
 211                 return idx;
 212         }
 213
 214         /**
 215          * Set the currently selected language in the Config
 216          */
 217         private void selectLanguage()
 218         {
 219                 int index = _languageDropDown.getSelectedIndex();
 220                 // If index hasn't changed then don't dismiss dialog
 221                 if (index >= 0 && index != _startIndex)
 222                 {
 223                         String code = LANGUAGE_CODES[index];
 224                         // Set code and langfile in config
 225                         Config.setConfigString(Config.KEY_LANGUAGE_CODE, code);
 226                         Config.setConfigString(Config.KEY_LANGUAGE_FILE, null);
 227                         _dialog.dispose();
 228                         showEndMessage();
 229                 }
 230         }
 231
 232         /**
 233          * Select the currently selected language file to use for texts
 234          */
 235         private void selectLanguageFile()
 236         {
 237                 final String oldPath = Config.getConfigString(Config.KEY_LANGUAGE_FILE);
 238                 String filename = _langFileBox.getText();
 239                 // Check there is an entry in the box
 240                 if (filename != null && !filename.equals(""))
 241                 {
 242                         // Check the file exists and is readable
 243                         File textsFile = new File(filename);
 244                         if (!textsFile.exists() || !textsFile.canRead())
 245                         {
 246                                 _app.showErrorMessage(getNameKey(), "error.load.noread");
 247                         }
 248                         else if (!languageFileLooksOk(textsFile))
 249                         {
 250                                 _app.showErrorMessage(getNameKey(), "error.language.wrongfile");
 251                         }
 252                         else if (oldPath == null || !textsFile.getAbsolutePath().equalsIgnoreCase(oldPath))
 253                         {
 254                                 // Set in Config
 255                                 Config.setConfigString(Config.KEY_LANGUAGE_FILE, textsFile.getAbsolutePath());
 256                                 _dialog.dispose();
 257                                 showEndMessage();
 258                         }
 259                 }
 260                 else {
 261                         // if file was previously selected, and now it's blank, then reset Config
 262                         if (oldPath != null && oldPath.length() > 0)
 263                         {
 264                                 Config.setConfigString(Config.KEY_LANGUAGE_FILE, null);
 265                                 _dialog.dispose();
 266                                 showEndMessage();
 267                         }
 268                 }
 269         }
 270
 271         /**
 272          * Check the given file to see if it looks like a language file
 273          * @param inFile File object to load
 274          * @return true if file looks ok
 275          */
 276         private static boolean languageFileLooksOk(File inFile)
 277         {
 278                 boolean ok = false;
 279                 boolean wrong = false;
 280                 BufferedReader reader = null;
 281                 try
 282                 {
 283                         // Read through text file looking for lines with the right start
 284                         reader = new BufferedReader(new FileReader(inFile));
 285                         String currLine = reader.readLine();
 286                         while (currLine != null && !ok && !wrong)
 287                         {
 288                                 if (currLine.trim().length() > 0 && currLine.matches("[a-z.]+=.+")) {
 289                                         ok = true;
 290                                 }
 291                                 if (currLine.indexOf('\0', 0) >= 0) {
 292                                         wrong = true;
 293                                 }
 294                                 currLine = reader.readLine();
 295                         }
 296                 }
 297                 catch (Exception e) {} // ignore exceptions, flag remains as set
 298                 finally {
 299                         try {reader.close();} catch (Exception e2) {}
 300                 }
 301                 return ok && !wrong;
 302         }
 303
 304         /**
 305          * Function activated by the "Browse..." button to select a file
 306          */
 307         private void chooseFile()
 308         {
 309                 JFileChooser chooser = new JFileChooser();
 310                 chooser.addChoosableFileFilter(
 311                         new GenericFileFilter("filetype.txt", new String[] {"txt", "text"}));
 312                 chooser.setAcceptAllFileFilterUsed(true);
 313                 // Set start path from currently selected file
 314                 String currPath = _langFileBox.getText();
 315                 if (currPath != null && currPath.length() > 1) {
 316                         chooser.setSelectedFile(new File(currPath));
 317                 }
 318                 if (chooser.showOpenDialog(_parentFrame) == JFileChooser.APPROVE_OPTION)
 319                 {
 320                         _langFileBox.setText(chooser.getSelectedFile().getAbsolutePath());
 321                 }
 322         }
 323
 324         /**
 325          * Show message to remind about saving settings and restarting
 326          */
 327         private void showEndMessage()
 328         {
 329                 final String messageKey = Config.getConfigBoolean(Config.KEY_AUTOSAVE_SETTINGS)?
 330                         "dialog.setlanguage.endmessagewithautosave":"dialog.setlanguage.endmessage";
 331                 JOptionPane.showMessageDialog(_parentFrame,
 332                         I18nManager.getText(messageKey),
 333                         I18nManager.getText(getNameKey()), JOptionPane.INFORMATION_MESSAGE);
 334         }
 335 }