PuzzleApplet.java

   1 /*
   2  * PuzzleApplet.java: NestedVM applet for the puzzle collection
   3  */
   4 import java.awt.*;
   5 import java.awt.event.*;
   6 import java.awt.image.BufferedImage;
   7 import java.util.*;
   8 import javax.swing.*;
   9 import javax.swing.border.BevelBorder;
  10 import javax.swing.Timer;
  11 import java.util.List;
  12
  13 import org.ibex.nestedvm.Runtime;
  14
  15 public class PuzzleApplet extends JApplet implements Runtime.CallJavaCB {
  16
  17     private static final long serialVersionUID = 1L;
  18
  19     private static final int CFG_SETTINGS = 0, CFG_SEED = 1, CFG_DESC = 2,
  20             LEFT_BUTTON = 0x0200, MIDDLE_BUTTON = 0x201, RIGHT_BUTTON = 0x202,
  21             LEFT_DRAG = 0x203, MIDDLE_DRAG = 0x204, RIGHT_DRAG = 0x205,
  22             LEFT_RELEASE = 0x206, CURSOR_UP = 0x209, CURSOR_DOWN = 0x20a,
  23             CURSOR_LEFT = 0x20b, CURSOR_RIGHT = 0x20c, MOD_CTRL = 0x1000,
  24             MOD_SHFT = 0x2000, MOD_NUM_KEYPAD = 0x4000, ALIGN_VCENTRE = 0x100,
  25             ALIGN_HCENTRE = 0x001, ALIGN_HRIGHT = 0x002, C_STRING = 0,
  26             C_CHOICES = 1, C_BOOLEAN = 2;
  27
  28     private JFrame mainWindow;
  29
  30     private JMenu typeMenu;
  31     private JMenuItem solveCommand;
  32     private Color[] colors;
  33     private JLabel statusBar;
  34     private PuzzlePanel pp;
  35     private Runtime runtime;
  36     private String[] puzzle_args;
  37     private Graphics2D  gg;
  38     private Timer timer;
  39     private int xarg1, xarg2, xarg3;
  40     private int[] xPoints, yPoints;
  41     private BufferedImage[] blitters = new BufferedImage[512];
  42     private ConfigDialog dlg;
  43
  44     static {
  45         try {
  46             UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
  47         } catch (Exception ex) {
  48             ex.printStackTrace();
  49         }
  50     }
  51
  52     public void init() {
  53         try {
  54             Container cp = getContentPane();
  55             cp.setLayout(new BorderLayout());
  56             runtime = (Runtime) Class.forName("PuzzleEngine").newInstance();
  57             runtime.setCallJavaCB(this);
  58             JMenuBar menubar = new JMenuBar();
  59             JMenu jm;
  60             menubar.add(jm = new JMenu("Game"));
  61             addMenuItemWithKey(jm, "New", 'n');
  62             addMenuItemCallback(jm, "Restart", "jcallback_restart_event");
  63             addMenuItemCallback(jm, "Specific...", "jcallback_config_event", CFG_DESC);
  64             addMenuItemCallback(jm, "Random Seed...", "jcallback_config_event", CFG_SEED);
  65             jm.addSeparator();
  66             addMenuItemWithKey(jm, "Undo", 'u');
  67             addMenuItemWithKey(jm, "Redo", 'r');
  68             jm.addSeparator();
  69             solveCommand = addMenuItemCallback(jm, "Solve", "jcallback_solve_event");
  70             solveCommand.setEnabled(false);
  71             if (mainWindow != null) {
  72                 jm.addSeparator();
  73                 addMenuItemWithKey(jm, "Exit", 'q');
  74             }
  75             menubar.add(typeMenu = new JMenu("Type"));
  76             typeMenu.setVisible(false);
  77             menubar.add(jm = new JMenu("Help"));
  78             addMenuItemCallback(jm, "About", "jcallback_about_event");
  79             setJMenuBar(menubar);
  80             cp.add(pp = new PuzzlePanel(), BorderLayout.CENTER);
  81             pp.addKeyListener(new KeyAdapter() {
  82                 public void keyPressed(KeyEvent e) {
  83                     int key = -1;
  84                     int shift = e.isShiftDown() ? MOD_SHFT : 0;
  85                     int ctrl = e.isControlDown() ? MOD_CTRL : 0;
  86                     switch (e.getKeyCode()) {
  87                     case KeyEvent.VK_LEFT:
  88                     case KeyEvent.VK_KP_LEFT:
  89                         key = shift | ctrl | CURSOR_LEFT;
  90                         break;
  91                     case KeyEvent.VK_RIGHT:
  92                     case KeyEvent.VK_KP_RIGHT:
  93                         key = shift | ctrl | CURSOR_RIGHT;
  94                         break;
  95                     case KeyEvent.VK_UP:
  96                     case KeyEvent.VK_KP_UP:
  97                         key = shift | ctrl | CURSOR_UP;
  98                         break;
  99                     case KeyEvent.VK_DOWN:
 100                     case KeyEvent.VK_KP_DOWN:
 101                         key = shift | ctrl | CURSOR_DOWN;
 102                         break;
 103                     case KeyEvent.VK_PAGE_UP:
 104                         key = shift | ctrl | MOD_NUM_KEYPAD | '9';
 105                         break;
 106                     case KeyEvent.VK_PAGE_DOWN:
 107                         key = shift | ctrl | MOD_NUM_KEYPAD | '3';
 108                         break;
 109                     case KeyEvent.VK_HOME:
 110                         key = shift | ctrl | MOD_NUM_KEYPAD | '7';
 111                         break;
 112                     case KeyEvent.VK_END:
 113                         key = shift | ctrl | MOD_NUM_KEYPAD | '1';
 114                         break;
 115                     default:
 116                         if (e.getKeyCode() >= KeyEvent.VK_NUMPAD0 && e.getKeyCode() <=KeyEvent.VK_NUMPAD9) {
 117                             key = MOD_NUM_KEYPAD | (e.getKeyCode() - KeyEvent.VK_NUMPAD0+'0');
 118                         }
 119                     break;
 120                     }
 121                     if (key != -1) {
 122                         runtimeCall("jcallback_key_event", new int[] {0, 0, key});
 123                     }
 124                 }
 125                 public void keyTyped(KeyEvent e) {
 126                     runtimeCall("jcallback_key_event", new int[] {0, 0, e.getKeyChar()});
 127                 }
 128             });
 129             pp.addMouseListener(new MouseAdapter() {
 130                 public void mouseReleased(MouseEvent e) {
 131                     mousePressedReleased(e, true);
 132                 }
 133                 public void mousePressed(MouseEvent e) {
 134                     pp.requestFocus();
 135                     mousePressedReleased(e, false);
 136                 }
 137                 private void mousePressedReleased(MouseEvent e, boolean released) {
 138                     int button;
 139                     if ((e.getModifiers() & (InputEvent.BUTTON2_MASK | InputEvent.SHIFT_MASK)) != 0)
 140                         button = MIDDLE_BUTTON;
 141                     else if ((e.getModifiers() & (InputEvent.BUTTON3_MASK | InputEvent.ALT_MASK)) != 0)
 142                         button = RIGHT_BUTTON;
 143                     else if ((e.getModifiers() & (InputEvent.BUTTON1_MASK)) != 0)
 144                         button = LEFT_BUTTON;
 145                     else
 146                         return;
 147                     if (released)
 148                         button += LEFT_RELEASE - LEFT_BUTTON;
 149                     runtimeCall("jcallback_key_event", new int[] {e.getX(), e.getY(), button});
 150                 }
 151             });
 152             pp.addMouseMotionListener(new MouseMotionAdapter() {
 153                 public void mouseDragged(MouseEvent e) {
 154                     int button;
 155                     if ((e.getModifiers() & (InputEvent.BUTTON2_MASK | InputEvent.SHIFT_MASK)) != 0)
 156                         button = MIDDLE_DRAG;
 157                     else if ((e.getModifiers() & (InputEvent.BUTTON3_MASK | InputEvent.ALT_MASK)) != 0)
 158                         button = RIGHT_DRAG;
 159                     else
 160                         button = LEFT_DRAG;
 161                     runtimeCall("jcallback_key_event", new int[] {e.getX(), e.getY(), button});
 162                 }
 163             });
 164             pp.addComponentListener(new ComponentAdapter() {
 165                 public void componentResized(ComponentEvent e) {
 166                     handleResized();
 167                 }
 168             });
 169             pp.setFocusable(true);
 170             pp.requestFocus();
 171             timer = new Timer(20, new ActionListener() {
 172                 public void actionPerformed(ActionEvent e) {
 173                     runtimeCall("jcallback_timer_func", new int[0]);
 174                 }
 175             });
 176             String gameid;
 177             try {
 178                 gameid = getParameter("game_id");
 179             } catch (java.lang.NullPointerException ex) {
 180                 gameid = null;
 181             }
 182             if (gameid == null) {
 183                 puzzle_args = null;
 184             } else {
 185                 puzzle_args = new String[2];
 186                 puzzle_args[0] = "puzzle";
 187                 puzzle_args[1] = gameid;
 188             }
 189             SwingUtilities.invokeLater(new Runnable() {
 190                 public void run() {
 191                     runtime.start(puzzle_args);
 192                     runtime.execute();
 193                 }
 194             });
 195         } catch (Exception ex) {
 196             ex.printStackTrace();
 197         }
 198     }
 199
 200     public void destroy() {
 201         SwingUtilities.invokeLater(new Runnable() {
 202             public void run() {
 203                 runtime.execute();
 204                 if (mainWindow != null) {
 205                     mainWindow.dispose();
 206                     System.exit(0);
 207                 }
 208             }
 209         });
 210     }
 211
 212     protected void handleResized() {
 213         pp.createBackBuffer(pp.getWidth(), pp.getHeight(), colors[0]);
 214         runtimeCall("jcallback_resize", new int[] {pp.getWidth(), pp.getHeight()});
 215     }
 216
 217     private void addMenuItemWithKey(JMenu jm, String name, int key) {
 218         addMenuItemCallback(jm, name, "jcallback_menu_key_event", key);
 219     }
 220
 221     private JMenuItem addMenuItemCallback(JMenu jm, String name, final String callback, final int arg) {
 222         return addMenuItemCallback(jm, name, callback, new int[] {arg});
 223     }
 224
 225     private JMenuItem addMenuItemCallback(JMenu jm, String name, final String callback) {
 226         return addMenuItemCallback(jm, name, callback, new int[0]);
 227     }
 228
 229     private JMenuItem addMenuItemCallback(JMenu jm, String name, final String callback, final int[] args) {
 230         JMenuItem jmi;
 231         if (jm == typeMenu)
 232             typeMenu.add(jmi = new JCheckBoxMenuItem(name));
 233         else
 234         jm.add(jmi = new JMenuItem(name));
 235         jmi.addActionListener(new ActionListener() {
 236             public void actionPerformed(ActionEvent e) {
 237                 runtimeCall(callback, args);
 238             }
 239         });
 240         return jmi;
 241     }
 242
 243     protected void runtimeCall(String func, int[] args) {
 244         if (runtimeCallWithResult(func, args) == 42 && mainWindow != null) {
 245             destroy();
 246         }
 247     }
 248
 249     protected int runtimeCallWithResult(String func, int[] args) {
 250         try {
 251             return runtime.call(func, args);
 252         } catch (Runtime.CallException ex) {
 253             ex.printStackTrace();
 254             return 42;
 255         }
 256     }
 257
 258     private void buildConfigureMenuItem() {
 259         if (typeMenu.isVisible()) {
 260             typeMenu.addSeparator();
 261         } else {
 262             typeMenu.setVisible(true);
 263         }
 264         addMenuItemCallback(typeMenu, "Custom...", "jcallback_config_event", CFG_SETTINGS);
 265     }
 266
 267     private void addTypeItem(String name, final int ptrGameParams) {
 268         typeMenu.setVisible(true);
 269         addMenuItemCallback(typeMenu, name, "jcallback_preset_event", ptrGameParams);
 270     }
 271
 272     public int call(int cmd, int arg1, int arg2, int arg3) {
 273         try {
 274             switch(cmd) {
 275             case 0: // initialize
 276                 if (mainWindow != null) mainWindow.setTitle(runtime.cstring(arg1));
 277                 if ((arg2 & 1) != 0) buildConfigureMenuItem();
 278                 if ((arg2 & 2) != 0) addStatusBar();
 279                 if ((arg2 & 4) != 0) solveCommand.setEnabled(true);
 280                 colors = new Color[arg3];
 281                 return 0;
 282             case 1: // Type menu item
 283                 addTypeItem(runtime.cstring(arg1), arg2);
 284                 return 0;
 285             case 2: // MessageBox
 286                 JOptionPane.showMessageDialog(this, runtime.cstring(arg2), runtime.cstring(arg1), arg3 == 0 ? JOptionPane.INFORMATION_MESSAGE : JOptionPane.ERROR_MESSAGE);
 287                 return 0;
 288             case 3: // Resize
 289                 pp.setPreferredSize(new Dimension(arg1, arg2));
 290                 if (mainWindow != null) mainWindow.pack();
 291                 handleResized();
 292                 if (mainWindow != null) mainWindow.setVisible(true);
 293                 return 0;
 294             case 4: // drawing tasks
 295                 switch(arg1) {
 296                 case 0:
 297                     String text = runtime.cstring(arg2);
 298                     if (text.equals("")) text = " ";
 299                     statusBar.setText(text);
 300                     break;
 301                 case 1:
 302                     gg = pp.backBuffer.createGraphics();
 303                     if (arg2 != 0 || arg3 != 0 ||
 304                         arg2 + xarg2 != getWidth() ||
 305                         arg3 + xarg3 != getHeight()) {
 306                         int left = arg2, right = arg2 + xarg2;
 307                         int top = arg3, bottom = arg3 + xarg3;
 308                         int width = getWidth(), height = getHeight();
 309                         gg.setColor(colors != null ? colors[0] : Color.black);
 310                         gg.fillRect(0, 0, left, height);
 311                         gg.fillRect(right, 0, width-right, height);
 312                         gg.fillRect(0, 0, width, top);
 313                         gg.fillRect(0, bottom, width, height-bottom);
 314                         gg.setClip(left, top, right-left, bottom-top);
 315                     }
 316                     break;
 317                 case 2: gg.dispose(); pp.repaint(); break;
 318                 case 3: gg.setClip(arg2, arg3, xarg1, xarg2); break;
 319                 case 4:
 320                     if (arg2 == 0 && arg3 == 0) {
 321                         gg.setClip(0, 0, getWidth(), getHeight());
 322                     } else {
 323                         gg.setClip(arg2, arg3, getWidth()-2*arg2, getHeight()-2*arg3);
 324                     }
 325                     break;
 326                 case 5:
 327                     gg.setColor(colors[xarg3]);
 328                     gg.fillRect(arg2, arg3, xarg1, xarg2);
 329                     break;
 330                 case 6:
 331                     gg.setColor(colors[xarg3]);
 332                     gg.drawLine(arg2, arg3, xarg1, xarg2);
 333                     break;
 334                 case 7:
 335                     xPoints = new int[arg2];
 336                     yPoints = new int[arg2];
 337                     break;
 338                 case 8:
 339                     if (arg3 != -1) {
 340                         gg.setColor(colors[arg3]);
 341                         gg.fillPolygon(xPoints, yPoints, xPoints.length);
 342                     }
 343                     gg.setColor(colors[arg2]);
 344                     gg.drawPolygon(xPoints, yPoints, xPoints.length);
 345                     break;
 346                 case 9:
 347                     if (arg3 != -1) {
 348                         gg.setColor(colors[arg3]);
 349                         gg.fillOval(xarg1-xarg3, xarg2-xarg3, xarg3*2, xarg3*2);
 350                     }
 351                     gg.setColor(colors[arg2]);
 352                     gg.drawOval(xarg1-xarg3, xarg2-xarg3, xarg3*2, xarg3*2);
 353                     break;
 354                 case 10:
 355                     for(int i=0; i<blitters.length; i++) {
 356                         if (blitters[i] == null) {
 357                             blitters[i] = new BufferedImage(arg2, arg3, BufferedImage.TYPE_3BYTE_BGR);
 358                             return i;
 359                         }
 360                     }
 361                     throw new RuntimeException("No free blitter found!");
 362                 case 11: blitters[arg2] = null; break;
 363                 case 12:
 364                     timer.start(); break;
 365                 case 13:
 366                     timer.stop(); break;
 367                 }
 368                 return 0;
 369             case 5: // more arguments
 370                 xarg1 = arg1;
 371                 xarg2 = arg2;
 372                 xarg3 = arg3;
 373                 return 0;
 374             case 6: // polygon vertex
 375                 xPoints[arg1]=arg2;
 376                 yPoints[arg1]=arg3;
 377                 return 0;
 378             case 7: // string
 379                 gg.setColor(colors[arg2]);
 380                 {
 381                     String text = runtime.utfstring(arg3);
 382                     Font ft = new Font((xarg3 & 0x10) != 0 ? "Monospaced" : "Dialog",
 383                             Font.PLAIN, 100);
 384                     int height100 = this.getFontMetrics(ft).getHeight();
 385                     ft = ft.deriveFont(arg1 * 100 / (float)height100);
 386                     FontMetrics fm = this.getFontMetrics(ft);
 387                     int asc = fm.getAscent(), desc = fm.getDescent();
 388                     if ((xarg3 & ALIGN_VCENTRE) != 0)
 389                         xarg2 += asc - (asc+desc)/2;
 390                     int wid = fm.stringWidth(text);
 391                     if ((xarg3 & ALIGN_HCENTRE) != 0)
 392                         xarg1 -= wid / 2;
 393                     else if ((xarg3 & ALIGN_HRIGHT) != 0)
 394                         xarg1 -= wid;
 395                     gg.setFont(ft);
 396                     gg.drawString(text, xarg1, xarg2);
 397                 }
 398                 return 0;
 399             case 8: // blitter_save
 400                 Graphics g2 = blitters[arg1].createGraphics();
 401                 g2.drawImage(pp.backBuffer, 0, 0, blitters[arg1].getWidth(), blitters[arg1].getHeight(),
 402                         arg2, arg3, arg2 + blitters[arg1].getWidth(), arg3 + blitters[arg1].getHeight(), this);
 403                 g2.dispose();
 404                 return 0;
 405             case 9: // blitter_load
 406                 gg.drawImage(blitters[arg1], arg2, arg3, this);
 407                 return 0;
 408             case 10: // dialog_init
 409                 dlg= new ConfigDialog(this, runtime.cstring(arg1));
 410                 return 0;
 411             case 11: // dialog_add_control
 412                 {
 413                     int sval_ptr = arg1;
 414                     int ival = arg2;
 415                     int ptr = xarg1;
 416                     int type=xarg2;
 417                     String name = runtime.cstring(xarg3);
 418                     switch(type) {
 419                     case C_STRING:
 420                         dlg.addTextBox(ptr, name, runtime.cstring(sval_ptr));
 421                         break;
 422                     case C_BOOLEAN:
 423                         dlg.addCheckBox(ptr, name, ival != 0);
 424                         break;
 425                     case C_CHOICES:
 426                         dlg.addComboBox(ptr, name, runtime.cstring(sval_ptr), ival);
 427                     }
 428                 }
 429                 return 0;
 430             case 12:
 431                 dlg.finish();
 432                 dlg = null;
 433                 return 0;
 434             case 13: // tick a menu item
 435                 if (arg1 < 0) arg1 = typeMenu.getItemCount() - 1;
 436                 for (int i = 0; i < typeMenu.getItemCount(); i++) {
 437                     if (typeMenu.getMenuComponent(i) instanceof JCheckBoxMenuItem) {
 438                         ((JCheckBoxMenuItem)typeMenu.getMenuComponent(i)).setSelected(arg1 == i);
 439                     }
 440                 }
 441                 return 0;
 442             default:
 443                 if (cmd >= 1024 && cmd < 2048) { // palette
 444                     colors[cmd-1024] = new Color(arg1, arg2, arg3);
 445                 }
 446             if (cmd == 1024) {
 447                 pp.setBackground(colors[0]);
 448                 if (statusBar != null) statusBar.setBackground(colors[0]);
 449                 this.setBackground(colors[0]);
 450             }
 451             return 0;
 452             }
 453         } catch (Throwable ex) {
 454             ex.printStackTrace();
 455             System.exit(-1);
 456             return 0;
 457         }
 458     }
 459
 460     private void addStatusBar() {
 461         statusBar = new JLabel("test");
 462         statusBar.setBorder(new BevelBorder(BevelBorder.LOWERED));
 463         getContentPane().add(BorderLayout.SOUTH,statusBar);
 464     }
 465
 466     // Standalone runner
 467     public static void main(String[] args) {
 468         final PuzzleApplet a = new PuzzleApplet();
 469         JFrame jf = new JFrame("Loading...");
 470         jf.getContentPane().setLayout(new BorderLayout());
 471         jf.getContentPane().add(a, BorderLayout.CENTER);
 472         a.mainWindow=jf;
 473         a.init();
 474         a.start();
 475         jf.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
 476         jf.addWindowListener(new WindowAdapter() {
 477             public void windowClosing(WindowEvent e) {
 478                 a.stop();
 479                 a.destroy();
 480             }
 481         });
 482         jf.setVisible(true);
 483     }
 484
 485     public static class PuzzlePanel extends JPanel {
 486
 487         private static final long serialVersionUID = 1L;
 488         protected BufferedImage backBuffer;
 489
 490         public PuzzlePanel() {
 491             setPreferredSize(new Dimension(100,100));
 492             createBackBuffer(100,100, Color.black);
 493         }
 494
 495         public void createBackBuffer(int w, int h, Color bg) {
 496             if (w > 0 && h > 0) {
 497                 backBuffer = new BufferedImage(w,h, BufferedImage.TYPE_3BYTE_BGR);
 498                 Graphics g = backBuffer.createGraphics();
 499                 g.setColor(bg);
 500                 g.fillRect(0, 0, w, h);
 501                 g.dispose();
 502             }
 503         }
 504
 505         protected void paintComponent(Graphics g) {
 506             g.drawImage(backBuffer, 0, 0, this);
 507         }
 508     }
 509
 510     public static class ConfigComponent {
 511         public int type;
 512         public int configItemPointer;
 513         public JComponent component;
 514
 515         public ConfigComponent(int type, int configItemPointer, JComponent component) {
 516             this.type = type;
 517             this.configItemPointer = configItemPointer;
 518             this.component = component;
 519         }
 520     }
 521
 522     public class ConfigDialog extends JDialog {
 523
 524         private GridBagConstraints gbcLeft = new GridBagConstraints(
 525                 GridBagConstraints.RELATIVE, GridBagConstraints.RELATIVE, 1, 1,
 526                 0, 0, GridBagConstraints.WEST, GridBagConstraints.NONE,
 527                 new Insets(0, 0, 0, 0), 0, 0);
 528         private GridBagConstraints gbcRight = new GridBagConstraints(
 529                 GridBagConstraints.RELATIVE, GridBagConstraints.RELATIVE,
 530                 GridBagConstraints.REMAINDER, 1, 1.0, 0,
 531                 GridBagConstraints.CENTER, GridBagConstraints.HORIZONTAL,
 532                 new Insets(5, 5, 5, 5), 0, 0);
 533         private GridBagConstraints gbcBottom = new GridBagConstraints(
 534                 GridBagConstraints.RELATIVE, GridBagConstraints.RELATIVE,
 535                 GridBagConstraints.REMAINDER, GridBagConstraints.REMAINDER,
 536                 1.0, 1.0, GridBagConstraints.CENTER,
 537                 GridBagConstraints.HORIZONTAL, new Insets(5, 5, 5, 5), 0, 0);
 538
 539         private static final long serialVersionUID = 1L;
 540         private List components = new ArrayList();
 541
 542         public ConfigDialog(JApplet parent, String title) {
 543             super(JOptionPane.getFrameForComponent(parent), title, true);
 544             getContentPane().setLayout(new GridBagLayout());
 545         }
 546
 547         public void addTextBox(int ptr, String name, String value) {
 548             getContentPane().add(new JLabel(name), gbcLeft);
 549             JComponent c = new JTextField(value, 25);
 550             getContentPane().add(c, gbcRight);
 551             components.add(new ConfigComponent(C_STRING, ptr, c));
 552         }
 553
 554
 555         public void addCheckBox(int ptr, String name, boolean selected) {
 556             JComponent c = new JCheckBox(name, selected);
 557             getContentPane().add(c, gbcRight);
 558             components.add(new ConfigComponent(C_BOOLEAN, ptr, c));
 559         }
 560
 561         public void addComboBox(int ptr, String name, String values, int selected) {
 562             getContentPane().add(new JLabel(name), gbcLeft);
 563             StringTokenizer st = new StringTokenizer(values.substring(1), values.substring(0,1));
 564             JComboBox c = new JComboBox();
 565             c.setEditable(false);
 566             while(st.hasMoreTokens())
 567                 c.addItem(st.nextToken());
 568             c.setSelectedIndex(selected);
 569             getContentPane().add(c, gbcRight);
 570             components.add(new ConfigComponent(C_CHOICES, ptr, c));
 571         }
 572
 573         public void finish() {
 574             JPanel buttons = new JPanel(new GridLayout(1, 2, 5, 5));
 575             getContentPane().add(buttons, gbcBottom);
 576             JButton b;
 577             buttons.add(b=new JButton("OK"));
 578             b.addActionListener(new ActionListener() {
 579                 public void actionPerformed(ActionEvent e) {
 580                     save();
 581                     dispose();
 582                 }
 583             });
 584             getRootPane().setDefaultButton(b);
 585             buttons.add(b=new JButton("Cancel"));
 586             b.addActionListener(new ActionListener() {
 587                 public void actionPerformed(ActionEvent e) {
 588                     dispose();
 589                 }
 590             });
 591             setDefaultCloseOperation(DISPOSE_ON_CLOSE);
 592             pack();
 593             setLocationRelativeTo(null);
 594             setVisible(true);
 595         }
 596         private void save() {
 597             for (int i = 0; i < components.size(); i++) {
 598                 ConfigComponent cc = (ConfigComponent) components.get(i);
 599                 switch(cc.type) {
 600                 case C_STRING:
 601                     JTextField jtf = (JTextField)cc.component;
 602                     runtimeCall("jcallback_config_set_string", new int[] {cc.configItemPointer, runtime.strdup(jtf.getText())});
 603                     break;
 604                 case C_BOOLEAN:
 605                     JCheckBox jcb = (JCheckBox)cc.component;
 606                     runtimeCall("jcallback_config_set_boolean", new int[] {cc.configItemPointer, jcb.isSelected()?1:0});
 607                     break;
 608                 case C_CHOICES:
 609                     JComboBox jcm = (JComboBox)cc.component;
 610                     runtimeCall("jcallback_config_set_choice", new int[] {cc.configItemPointer, jcm.getSelectedIndex()});
 611                     break;
 612                 }
 613             }
 614             runtimeCall("jcallback_config_ok", new int[0]);
 615         }
 616     }
 617 }