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[] typeMenuItems;
  32     private int customMenuItemIndex;
  33
  34     private JMenuItem solveCommand;
  35     private Color[] colors;
  36     private JLabel statusBar;
  37     private PuzzlePanel pp;
  38     private Runtime runtime;
  39     private String[] puzzle_args;
  40     private Graphics2D  gg;
  41     private Timer timer;
  42     private int xarg1, xarg2, xarg3;
  43     private int[] xPoints, yPoints;
  44     private BufferedImage[] blitters = new BufferedImage[512];
  45     private ConfigDialog dlg;
  46
  47     static {
  48         try {
  49             UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
  50         } catch (Exception ex) {
  51             ex.printStackTrace();
  52         }
  53     }
  54
  55     public void init() {
  56         try {
  57             Container cp = getContentPane();
  58             cp.setLayout(new BorderLayout());
  59             runtime = (Runtime) Class.forName("PuzzleEngine").newInstance();
  60             runtime.setCallJavaCB(this);
  61             JMenuBar menubar = new JMenuBar();
  62             JMenu jm;
  63             menubar.add(jm = new JMenu("Game"));
  64             addMenuItemWithKey(jm, "New", 'n');
  65             addMenuItemCallback(jm, "Restart", "jcallback_restart_event");
  66             addMenuItemCallback(jm, "Specific...", "jcallback_config_event", CFG_DESC);
  67             addMenuItemCallback(jm, "Random Seed...", "jcallback_config_event", CFG_SEED);
  68             jm.addSeparator();
  69             addMenuItemWithKey(jm, "Undo", 'u');
  70             addMenuItemWithKey(jm, "Redo", 'r');
  71             jm.addSeparator();
  72             solveCommand = addMenuItemCallback(jm, "Solve", "jcallback_solve_event");
  73             solveCommand.setEnabled(false);
  74             if (mainWindow != null) {
  75                 jm.addSeparator();
  76                 addMenuItemWithKey(jm, "Exit", 'q');
  77             }
  78             menubar.add(typeMenu = new JMenu("Type"));
  79             typeMenu.setVisible(false);
  80             menubar.add(jm = new JMenu("Help"));
  81             addMenuItemCallback(jm, "About", "jcallback_about_event");
  82             setJMenuBar(menubar);
  83             cp.add(pp = new PuzzlePanel(), BorderLayout.CENTER);
  84             pp.addKeyListener(new KeyAdapter() {
  85                 public void keyPressed(KeyEvent e) {
  86                     int key = -1;
  87                     int shift = e.isShiftDown() ? MOD_SHFT : 0;
  88                     int ctrl = e.isControlDown() ? MOD_CTRL : 0;
  89                     switch (e.getKeyCode()) {
  90                     case KeyEvent.VK_LEFT:
  91                     case KeyEvent.VK_KP_LEFT:
  92                         key = shift | ctrl | CURSOR_LEFT;
  93                         break;
  94                     case KeyEvent.VK_RIGHT:
  95                     case KeyEvent.VK_KP_RIGHT:
  96                         key = shift | ctrl | CURSOR_RIGHT;
  97                         break;
  98                     case KeyEvent.VK_UP:
  99                     case KeyEvent.VK_KP_UP:
 100                         key = shift | ctrl | CURSOR_UP;
 101                         break;
 102                     case KeyEvent.VK_DOWN:
 103                     case KeyEvent.VK_KP_DOWN:
 104                         key = shift | ctrl | CURSOR_DOWN;
 105                         break;
 106                     case KeyEvent.VK_PAGE_UP:
 107                         key = shift | ctrl | MOD_NUM_KEYPAD | '9';
 108                         break;
 109                     case KeyEvent.VK_PAGE_DOWN:
 110                         key = shift | ctrl | MOD_NUM_KEYPAD | '3';
 111                         break;
 112                     case KeyEvent.VK_HOME:
 113                         key = shift | ctrl | MOD_NUM_KEYPAD | '7';
 114                         break;
 115                     case KeyEvent.VK_END:
 116                         key = shift | ctrl | MOD_NUM_KEYPAD | '1';
 117                         break;
 118                     default:
 119                         if (e.getKeyCode() >= KeyEvent.VK_NUMPAD0 && e.getKeyCode() <=KeyEvent.VK_NUMPAD9) {
 120                             key = MOD_NUM_KEYPAD | (e.getKeyCode() - KeyEvent.VK_NUMPAD0+'0');
 121                         }
 122                     break;
 123                     }
 124                     if (key != -1) {
 125                         runtimeCall("jcallback_key_event", new int[] {0, 0, key});
 126                     }
 127                 }
 128                 public void keyTyped(KeyEvent e) {
 129                     runtimeCall("jcallback_key_event", new int[] {0, 0, e.getKeyChar()});
 130                 }
 131             });
 132             pp.addMouseListener(new MouseAdapter() {
 133                 public void mouseReleased(MouseEvent e) {
 134                     mousePressedReleased(e, true);
 135                 }
 136                 public void mousePressed(MouseEvent e) {
 137                     pp.requestFocus();
 138                     mousePressedReleased(e, false);
 139                 }
 140                 private void mousePressedReleased(MouseEvent e, boolean released) {
 141                     int button;
 142                     if ((e.getModifiers() & (InputEvent.BUTTON2_MASK | InputEvent.SHIFT_MASK)) != 0)
 143                         button = MIDDLE_BUTTON;
 144                     else if ((e.getModifiers() & (InputEvent.BUTTON3_MASK | InputEvent.ALT_MASK)) != 0)
 145                         button = RIGHT_BUTTON;
 146                     else if ((e.getModifiers() & (InputEvent.BUTTON1_MASK)) != 0)
 147                         button = LEFT_BUTTON;
 148                     else
 149                         return;
 150                     if (released)
 151                         button += LEFT_RELEASE - LEFT_BUTTON;
 152                     runtimeCall("jcallback_key_event", new int[] {e.getX(), e.getY(), button});
 153                 }
 154             });
 155             pp.addMouseMotionListener(new MouseMotionAdapter() {
 156                 public void mouseDragged(MouseEvent e) {
 157                     int button;
 158                     if ((e.getModifiers() & (InputEvent.BUTTON2_MASK | InputEvent.SHIFT_MASK)) != 0)
 159                         button = MIDDLE_DRAG;
 160                     else if ((e.getModifiers() & (InputEvent.BUTTON3_MASK | InputEvent.ALT_MASK)) != 0)
 161                         button = RIGHT_DRAG;
 162                     else
 163                         button = LEFT_DRAG;
 164                     runtimeCall("jcallback_key_event", new int[] {e.getX(), e.getY(), button});
 165                 }
 166             });
 167             pp.addComponentListener(new ComponentAdapter() {
 168                 public void componentResized(ComponentEvent e) {
 169                     handleResized();
 170                 }
 171             });
 172             pp.setFocusable(true);
 173             pp.requestFocus();
 174             timer = new Timer(20, new ActionListener() {
 175                 public void actionPerformed(ActionEvent e) {
 176                     runtimeCall("jcallback_timer_func", new int[0]);
 177                 }
 178             });
 179             String gameid;
 180             try {
 181                 gameid = getParameter("game_id");
 182             } catch (java.lang.NullPointerException ex) {
 183                 gameid = null;
 184             }
 185             if (gameid == null) {
 186                 puzzle_args = null;
 187             } else {
 188                 puzzle_args = new String[2];
 189                 puzzle_args[0] = "puzzle";
 190                 puzzle_args[1] = gameid;
 191             }
 192             SwingUtilities.invokeLater(new Runnable() {
 193                 public void run() {
 194                     runtime.start(puzzle_args);
 195                     runtime.execute();
 196                 }
 197             });
 198         } catch (Exception ex) {
 199             ex.printStackTrace();
 200         }
 201     }
 202
 203     public void destroy() {
 204         SwingUtilities.invokeLater(new Runnable() {
 205             public void run() {
 206                 runtime.execute();
 207                 if (mainWindow != null) {
 208                     mainWindow.dispose();
 209                     System.exit(0);
 210                 }
 211             }
 212         });
 213     }
 214
 215     protected void handleResized() {
 216         pp.createBackBuffer(pp.getWidth(), pp.getHeight(), colors[0]);
 217         runtimeCall("jcallback_resize", new int[] {pp.getWidth(), pp.getHeight()});
 218     }
 219
 220     private void addMenuItemWithKey(JMenu jm, String name, int key) {
 221         addMenuItemCallback(jm, name, "jcallback_menu_key_event", key);
 222     }
 223
 224     private JMenuItem addMenuItemCallback(JMenu jm, String name, final String callback, final int arg) {
 225         return addMenuItemCallback(jm, name, callback, new int[] {arg}, false);
 226     }
 227
 228     private JMenuItem addMenuItemCallback(JMenu jm, String name, final String callback) {
 229         return addMenuItemCallback(jm, name, callback, new int[0], false);
 230     }
 231
 232     private JMenuItem addMenuItemCallback(JMenu jm, String name, final String callback, final int[] args, boolean checkbox) {
 233         JMenuItem jmi;
 234         if (checkbox)
 235             jm.add(jmi = new JCheckBoxMenuItem(name));
 236         else
 237         jm.add(jmi = new JMenuItem(name));
 238         jmi.addActionListener(new ActionListener() {
 239             public void actionPerformed(ActionEvent e) {
 240                 runtimeCall(callback, args);
 241             }
 242         });
 243         return jmi;
 244     }
 245
 246     protected void runtimeCall(String func, int[] args) {
 247         if (runtimeCallWithResult(func, args) == 42 && mainWindow != null) {
 248             destroy();
 249         }
 250     }
 251
 252     protected int runtimeCallWithResult(String func, int[] args) {
 253         try {
 254             return runtime.call(func, args);
 255         } catch (Runtime.CallException ex) {
 256             ex.printStackTrace();
 257             return 42;
 258         }
 259     }
 260
 261     private void buildConfigureMenuItem() {
 262         if (typeMenu.isVisible()) {
 263             typeMenu.addSeparator();
 264         } else {
 265             typeMenu.setVisible(true);
 266         }
 267         typeMenuItems[customMenuItemIndex] =
 268             addMenuItemCallback(typeMenu, "Custom...",
 269                                 "jcallback_config_event",
 270                                 new int[] {CFG_SETTINGS}, true);
 271     }
 272
 273     private void addTypeItem
 274         (JMenu targetMenu, String name, int newId, final int ptrGameParams) {
 275
 276         typeMenu.setVisible(true);
 277         typeMenuItems[newId] =
 278             addMenuItemCallback(targetMenu, name,
 279                                 "jcallback_preset_event",
 280                                 new int[] {ptrGameParams}, true);
 281     }
 282
 283     private void addTypeSubmenu
 284         (JMenu targetMenu, String name, int newId) {
 285
 286         JMenu newMenu = new JMenu(name);
 287         newMenu.setVisible(true);
 288         typeMenuItems[newId] = newMenu;
 289         targetMenu.add(newMenu);
 290     }
 291
 292     public int call(int cmd, int arg1, int arg2, int arg3) {
 293         try {
 294             switch(cmd) {
 295             case 0: // initialize
 296                 if (mainWindow != null) mainWindow.setTitle(runtime.cstring(arg1));
 297                 if ((arg2 & 1) != 0) buildConfigureMenuItem();
 298                 if ((arg2 & 2) != 0) addStatusBar();
 299                 if ((arg2 & 4) != 0) solveCommand.setEnabled(true);
 300                 colors = new Color[arg3];
 301                 return 0;
 302             case 1: // configure Type menu
 303                 if (arg1 == 0) {
 304                     // preliminary setup
 305                     typeMenuItems = new JMenuItem[arg2 + 2];
 306                     typeMenuItems[arg2] = typeMenu;
 307                     customMenuItemIndex = arg2 + 1;
 308                     return arg2;
 309                 } else if (xarg1 != 0) {
 310                     addTypeItem((JMenu)typeMenuItems[arg2],
 311                                 runtime.cstring(arg1), arg3, xarg1);
 312                 } else {
 313                     addTypeSubmenu((JMenu)typeMenuItems[arg2],
 314                                    runtime.cstring(arg1), arg3);
 315                 }
 316                 return 0;
 317             case 2: // MessageBox
 318                 JOptionPane.showMessageDialog(this, runtime.cstring(arg2), runtime.cstring(arg1), arg3 == 0 ? JOptionPane.INFORMATION_MESSAGE : JOptionPane.ERROR_MESSAGE);
 319                 return 0;
 320             case 3: // Resize
 321                 pp.setPreferredSize(new Dimension(arg1, arg2));
 322                 if (mainWindow != null) mainWindow.pack();
 323                 handleResized();
 324                 if (mainWindow != null) mainWindow.setVisible(true);
 325                 return 0;
 326             case 4: // drawing tasks
 327                 switch(arg1) {
 328                 case 0:
 329                     String text = runtime.cstring(arg2);
 330                     if (text.equals("")) text = " ";
 331                     statusBar.setText(text);
 332                     break;
 333                 case 1:
 334                     gg = pp.backBuffer.createGraphics();
 335                     if (arg2 != 0 || arg3 != 0 ||
 336                         arg2 + xarg2 != getWidth() ||
 337                         arg3 + xarg3 != getHeight()) {
 338                         int left = arg2, right = arg2 + xarg2;
 339                         int top = arg3, bottom = arg3 + xarg3;
 340                         int width = getWidth(), height = getHeight();
 341                         gg.setColor(colors != null ? colors[0] : Color.black);
 342                         gg.fillRect(0, 0, left, height);
 343                         gg.fillRect(right, 0, width-right, height);
 344                         gg.fillRect(0, 0, width, top);
 345                         gg.fillRect(0, bottom, width, height-bottom);
 346                         gg.setClip(left, top, right-left, bottom-top);
 347                     }
 348                     break;
 349                 case 2: gg.dispose(); pp.repaint(); break;
 350                 case 3: gg.setClip(arg2, arg3, xarg1, xarg2); break;
 351                 case 4:
 352                     if (arg2 == 0 && arg3 == 0) {
 353                         gg.setClip(0, 0, getWidth(), getHeight());
 354                     } else {
 355                         gg.setClip(arg2, arg3, getWidth()-2*arg2, getHeight()-2*arg3);
 356                     }
 357                     break;
 358                 case 5:
 359                     gg.setColor(colors[xarg3]);
 360                     gg.fillRect(arg2, arg3, xarg1, xarg2);
 361                     break;
 362                 case 6:
 363                     gg.setColor(colors[xarg3]);
 364                     gg.drawLine(arg2, arg3, xarg1, xarg2);
 365                     break;
 366                 case 7:
 367                     xPoints = new int[arg2];
 368                     yPoints = new int[arg2];
 369                     break;
 370                 case 8:
 371                     if (arg3 != -1) {
 372                         gg.setColor(colors[arg3]);
 373                         gg.fillPolygon(xPoints, yPoints, xPoints.length);
 374                     }
 375                     gg.setColor(colors[arg2]);
 376                     gg.drawPolygon(xPoints, yPoints, xPoints.length);
 377                     break;
 378                 case 9:
 379                     if (arg3 != -1) {
 380                         gg.setColor(colors[arg3]);
 381                         gg.fillOval(xarg1-xarg3, xarg2-xarg3, xarg3*2, xarg3*2);
 382                     }
 383                     gg.setColor(colors[arg2]);
 384                     gg.drawOval(xarg1-xarg3, xarg2-xarg3, xarg3*2, xarg3*2);
 385                     break;
 386                 case 10:
 387                     for(int i=0; i<blitters.length; i++) {
 388                         if (blitters[i] == null) {
 389                             blitters[i] = new BufferedImage(arg2, arg3, BufferedImage.TYPE_3BYTE_BGR);
 390                             return i;
 391                         }
 392                     }
 393                     throw new RuntimeException("No free blitter found!");
 394                 case 11: blitters[arg2] = null; break;
 395                 case 12:
 396                     timer.start(); break;
 397                 case 13:
 398                     timer.stop(); break;
 399                 }
 400                 return 0;
 401             case 5: // more arguments
 402                 xarg1 = arg1;
 403                 xarg2 = arg2;
 404                 xarg3 = arg3;
 405                 return 0;
 406             case 6: // polygon vertex
 407                 xPoints[arg1]=arg2;
 408                 yPoints[arg1]=arg3;
 409                 return 0;
 410             case 7: // string
 411                 gg.setColor(colors[arg2]);
 412                 {
 413                     String text = runtime.utfstring(arg3);
 414                     Font ft = new Font((xarg3 & 0x10) != 0 ? "Monospaced" : "Dialog",
 415                             Font.PLAIN, 100);
 416                     int height100 = this.getFontMetrics(ft).getHeight();
 417                     ft = ft.deriveFont(arg1 * 100 / (float)height100);
 418                     FontMetrics fm = this.getFontMetrics(ft);
 419                     int asc = fm.getAscent(), desc = fm.getDescent();
 420                     if ((xarg3 & ALIGN_VCENTRE) != 0)
 421                         xarg2 += asc - (asc+desc)/2;
 422                     int wid = fm.stringWidth(text);
 423                     if ((xarg3 & ALIGN_HCENTRE) != 0)
 424                         xarg1 -= wid / 2;
 425                     else if ((xarg3 & ALIGN_HRIGHT) != 0)
 426                         xarg1 -= wid;
 427                     gg.setFont(ft);
 428                     gg.drawString(text, xarg1, xarg2);
 429                 }
 430                 return 0;
 431             case 8: // blitter_save
 432                 Graphics g2 = blitters[arg1].createGraphics();
 433                 g2.drawImage(pp.backBuffer, 0, 0, blitters[arg1].getWidth(), blitters[arg1].getHeight(),
 434                         arg2, arg3, arg2 + blitters[arg1].getWidth(), arg3 + blitters[arg1].getHeight(), this);
 435                 g2.dispose();
 436                 return 0;
 437             case 9: // blitter_load
 438                 gg.drawImage(blitters[arg1], arg2, arg3, this);
 439                 return 0;
 440             case 10: // dialog_init
 441                 dlg= new ConfigDialog(this, runtime.cstring(arg1));
 442                 return 0;
 443             case 11: // dialog_add_control
 444                 {
 445                     int sval_ptr = arg1;
 446                     int ival = arg2;
 447                     int ptr = xarg1;
 448                     int type=xarg2;
 449                     String name = runtime.cstring(xarg3);
 450                     switch(type) {
 451                     case C_STRING:
 452                         dlg.addTextBox(ptr, name, runtime.cstring(sval_ptr));
 453                         break;
 454                     case C_BOOLEAN:
 455                         dlg.addCheckBox(ptr, name, ival != 0);
 456                         break;
 457                     case C_CHOICES:
 458                         dlg.addComboBox(ptr, name, runtime.cstring(sval_ptr), ival);
 459                     }
 460                 }
 461                 return 0;
 462             case 12:
 463                 dlg.finish();
 464                 dlg = null;
 465                 return 0;
 466             case 13: // tick a menu item
 467                 if (arg1 < 0) arg1 = customMenuItemIndex;
 468                 for (int i = 0; i < typeMenuItems.length; i++) {
 469                     if (typeMenuItems[i] instanceof JCheckBoxMenuItem) {
 470                         ((JCheckBoxMenuItem)typeMenuItems[i]).setSelected
 471                             (arg1 == i);
 472                     }
 473                 }
 474                 return 0;
 475             default:
 476                 if (cmd >= 1024 && cmd < 2048) { // palette
 477                     colors[cmd-1024] = new Color(arg1, arg2, arg3);
 478                 }
 479             if (cmd == 1024) {
 480                 pp.setBackground(colors[0]);
 481                 if (statusBar != null) statusBar.setBackground(colors[0]);
 482                 this.setBackground(colors[0]);
 483             }
 484             return 0;
 485             }
 486         } catch (Throwable ex) {
 487             ex.printStackTrace();
 488             System.exit(-1);
 489             return 0;
 490         }
 491     }
 492
 493     private void addStatusBar() {
 494         statusBar = new JLabel("test");
 495         statusBar.setBorder(new BevelBorder(BevelBorder.LOWERED));
 496         getContentPane().add(BorderLayout.SOUTH,statusBar);
 497     }
 498
 499     // Standalone runner
 500     public static void main(String[] args) {
 501         final PuzzleApplet a = new PuzzleApplet();
 502         JFrame jf = new JFrame("Loading...");
 503         jf.getContentPane().setLayout(new BorderLayout());
 504         jf.getContentPane().add(a, BorderLayout.CENTER);
 505         a.mainWindow=jf;
 506         a.init();
 507         a.start();
 508         jf.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
 509         jf.addWindowListener(new WindowAdapter() {
 510             public void windowClosing(WindowEvent e) {
 511                 a.stop();
 512                 a.destroy();
 513             }
 514         });
 515         jf.setVisible(true);
 516     }
 517
 518     public static class PuzzlePanel extends JPanel {
 519
 520         private static final long serialVersionUID = 1L;
 521         protected BufferedImage backBuffer;
 522
 523         public PuzzlePanel() {
 524             setPreferredSize(new Dimension(100,100));
 525             createBackBuffer(100,100, Color.black);
 526         }
 527
 528         public void createBackBuffer(int w, int h, Color bg) {
 529             if (w > 0 && h > 0) {
 530                 backBuffer = new BufferedImage(w,h, BufferedImage.TYPE_3BYTE_BGR);
 531                 Graphics g = backBuffer.createGraphics();
 532                 g.setColor(bg);
 533                 g.fillRect(0, 0, w, h);
 534                 g.dispose();
 535             }
 536         }
 537
 538         protected void paintComponent(Graphics g) {
 539             g.drawImage(backBuffer, 0, 0, this);
 540         }
 541     }
 542
 543     public static class ConfigComponent {
 544         public int type;
 545         public int configItemPointer;
 546         public JComponent component;
 547
 548         public ConfigComponent(int type, int configItemPointer, JComponent component) {
 549             this.type = type;
 550             this.configItemPointer = configItemPointer;
 551             this.component = component;
 552         }
 553     }
 554
 555     public class ConfigDialog extends JDialog {
 556
 557         private GridBagConstraints gbcLeft = new GridBagConstraints(
 558                 GridBagConstraints.RELATIVE, GridBagConstraints.RELATIVE, 1, 1,
 559                 0, 0, GridBagConstraints.WEST, GridBagConstraints.NONE,
 560                 new Insets(0, 0, 0, 0), 0, 0);
 561         private GridBagConstraints gbcRight = new GridBagConstraints(
 562                 GridBagConstraints.RELATIVE, GridBagConstraints.RELATIVE,
 563                 GridBagConstraints.REMAINDER, 1, 1.0, 0,
 564                 GridBagConstraints.CENTER, GridBagConstraints.HORIZONTAL,
 565                 new Insets(5, 5, 5, 5), 0, 0);
 566         private GridBagConstraints gbcBottom = new GridBagConstraints(
 567                 GridBagConstraints.RELATIVE, GridBagConstraints.RELATIVE,
 568                 GridBagConstraints.REMAINDER, GridBagConstraints.REMAINDER,
 569                 1.0, 1.0, GridBagConstraints.CENTER,
 570                 GridBagConstraints.HORIZONTAL, new Insets(5, 5, 5, 5), 0, 0);
 571
 572         private static final long serialVersionUID = 1L;
 573         private List components = new ArrayList();
 574
 575         public ConfigDialog(JApplet parent, String title) {
 576             super(JOptionPane.getFrameForComponent(parent), title, true);
 577             getContentPane().setLayout(new GridBagLayout());
 578         }
 579
 580         public void addTextBox(int ptr, String name, String value) {
 581             getContentPane().add(new JLabel(name), gbcLeft);
 582             JComponent c = new JTextField(value, 25);
 583             getContentPane().add(c, gbcRight);
 584             components.add(new ConfigComponent(C_STRING, ptr, c));
 585         }
 586
 587
 588         public void addCheckBox(int ptr, String name, boolean selected) {
 589             JComponent c = new JCheckBox(name, selected);
 590             getContentPane().add(c, gbcRight);
 591             components.add(new ConfigComponent(C_BOOLEAN, ptr, c));
 592         }
 593
 594         public void addComboBox(int ptr, String name, String values, int selected) {
 595             getContentPane().add(new JLabel(name), gbcLeft);
 596             StringTokenizer st = new StringTokenizer(values.substring(1), values.substring(0,1));
 597             JComboBox c = new JComboBox();
 598             c.setEditable(false);
 599             while(st.hasMoreTokens())
 600                 c.addItem(st.nextToken());
 601             c.setSelectedIndex(selected);
 602             getContentPane().add(c, gbcRight);
 603             components.add(new ConfigComponent(C_CHOICES, ptr, c));
 604         }
 605
 606         public void finish() {
 607             JPanel buttons = new JPanel(new GridLayout(1, 2, 5, 5));
 608             getContentPane().add(buttons, gbcBottom);
 609             JButton b;
 610             buttons.add(b=new JButton("OK"));
 611             b.addActionListener(new ActionListener() {
 612                 public void actionPerformed(ActionEvent e) {
 613                     save();
 614                     dispose();
 615                 }
 616             });
 617             getRootPane().setDefaultButton(b);
 618             buttons.add(b=new JButton("Cancel"));
 619             b.addActionListener(new ActionListener() {
 620                 public void actionPerformed(ActionEvent e) {
 621                     dispose();
 622                 }
 623             });
 624             setDefaultCloseOperation(DISPOSE_ON_CLOSE);
 625             pack();
 626             setLocationRelativeTo(null);
 627             setVisible(true);
 628         }
 629         private void save() {
 630             for (int i = 0; i < components.size(); i++) {
 631                 ConfigComponent cc = (ConfigComponent) components.get(i);
 632                 switch(cc.type) {
 633                 case C_STRING:
 634                     JTextField jtf = (JTextField)cc.component;
 635                     runtimeCall("jcallback_config_set_string", new int[] {cc.configItemPointer, runtime.strdup(jtf.getText())});
 636                     break;
 637                 case C_BOOLEAN:
 638                     JCheckBox jcb = (JCheckBox)cc.component;
 639                     runtimeCall("jcallback_config_set_boolean", new int[] {cc.configItemPointer, jcb.isSelected()?1:0});
 640                     break;
 641                 case C_CHOICES:
 642                     JComboBox jcm = (JComboBox)cc.component;
 643                     runtimeCall("jcallback_config_set_choice", new int[] {cc.configItemPointer, jcm.getSelectedIndex()});
 644                     break;
 645                 }
 646             }
 647             runtimeCall("jcallback_config_ok", new int[0]);
 648         }
 649     }
 650 }