src/org/xwt/SpecialBoxProperty.java

   1 // Copyright 2002 Adam Megacz, see the COPYING file for licensing [GPL]
   2 package org.xwt;
   3
   4 import org.mozilla.javascript.*;
   5 import org.xwt.util.*;
   6 import java.util.*;
   7 import java.net.*;
   8 import java.text.*;
   9
  10 /**
  11  *  A helper class for properties of Box which require special
  12  *  handling.
  13  *
  14  *  To avoid excessive use of String.equals(), the Box.get() and
  15  *  Box.put() methods employ a Hash keyed on property names that
  16  *  require special handling. The value stored in the Hash is an
  17  *  instance of an anonymous subclass of SpecialBoxProperty, which knows
  18  *  how to handle get()s and put()s for that property name. There
  19  *  should be one anonymous subclass of SpecialBoxProperty for each
  20  *  specially-handled property on Box.
  21  */
  22 class SpecialBoxProperty {
  23
  24     SpecialBoxProperty() { }
  25     private static final int NUMINTS = Box.NUMINTS;
  26     private static final int dmax = Box.dmax;
  27     private static final int dmin = Box.dmin;
  28     private static final int cmin = Box.cmin;
  29     private static final int abs = Box.abs;
  30     private static final int pos = Box.pos;
  31     private static final int size = Box.size;
  32     private static final int oldpos = Box.oldpos;
  33     private static final int oldsize = Box.oldsize;
  34     private static final int pad = Box.pad;
  35
  36     /** stores instances of SpecialBoxProperty; keyed on property name */
  37     static Hash specialBoxProperties = new Hash(200, 3);
  38
  39     /** this method defines the behavior when the property is get()ed from b */
  40     Object get(Box b) { return null; }
  41
  42     /** this method defines the behavior when the property is put() to b */
  43     void put(Box b, Object value) { }
  44
  45     /** this method defines the behavior when the property is put() to b, allows a single SpecialBoxProperty to serve multiple properties */
  46     void put(String name, Box b, Object value) { put(b, value); }
  47
  48     // 'ye olde IBM CGA colours', as defined in the XWT reference
  49     static final int black = 0xFF000000;
  50     static final int blue = 0xFF000088;
  51     static final int green = 0xFF008800;
  52     static final int cyan = 0xFF008888;
  53     static final int red = 0xFF880000;
  54     static final int magenta = 0xFF880088;
  55     static final int brown = 0xFF888800;
  56     static final int lightGray = 0xFFBDBEBD;
  57     static final int darkGray = 0xFF242424;
  58     static final int brightBlue = 0xFF0000FF;
  59     static final int brightGreen = 0xFF00FF00;
  60     static final int brightCyan = 0xFF00FFFF;
  61     static final int brightRed = 0xFFFF0000;
  62     static final int pink = 0xFFFF00FF;
  63     static final int yellow = 0xFFFFFF00;
  64     static final int white = 0xFFFFFFFF;
  65
  66     static {
  67
  68         specialBoxProperties.put("color", new SpecialBoxProperty() {
  69                 public Object get(Box b) {
  70                     if ((b.color & 0xFF000000) == 0) return null;
  71                     String red = Integer.toHexString((b.color & 0x00FF0000) >> 16);
  72                     String green = Integer.toHexString((b.color & 0x0000FF00) >> 8);
  73                     String blue = Integer.toHexString(b.color & 0x000000FF);
  74                     if (red.length() < 2) red = "0" + red;
  75                     if (blue.length() < 2) blue = "0" + blue;
  76                     if (green.length() < 2) green = "0" + green;
  77                     return "#" + red + green + blue;
  78                 }
  79                 public void put(Box b, Object value) {
  80                     int newcolor = b.color;
  81                     String s = value == null ? null : value.toString();
  82                     if (value == null) newcolor = 0x00000000;
  83                     else if (s.length() > 0 && s.charAt(0) == '#')
  84                         newcolor = 0xFF000000 |
  85                             (Integer.parseInt(s.substring(1, 3), 16) << 16) |
  86                             (Integer.parseInt(s.substring(3, 5), 16) << 8) |
  87                             Integer.parseInt(s.substring(5, 7), 16);
  88                     else if (s.equals("black")) newcolor = black;
  89                     else if (s.equals("blue")) newcolor = blue;
  90                     else if (s.equals("green")) newcolor = green;
  91                     else if (s.equals("cyan")) newcolor = cyan;
  92                     else if (s.equals("red")) newcolor = red;
  93                     else if (s.equals("magenta")) newcolor = magenta;
  94                     else if (s.equals("brown")) newcolor = brown;
  95                     else if (s.equals("lightGray")) newcolor = lightGray;
  96                     else if (s.equals("darkGray")) newcolor = darkGray;
  97                     else if (s.equals("brightBlue")) newcolor = brightBlue;
  98                     else if (s.equals("brightGreen")) newcolor = brightGreen;
  99                     else if (s.equals("brightCyan")) newcolor = brightCyan;
 100                     else if (s.equals("brightRed")) newcolor = brightRed;
 101                     else if (s.equals("pink")) newcolor = pink;
 102                     else if (s.equals("yellow")) newcolor = yellow;
 103                     else if (s.equals("white")) newcolor = white;
 104                     else if (Log.on) Log.log(this, "invalid color " + s);
 105
 106                     if (newcolor == b.color) return;
 107                     b.color = newcolor;
 108                     b.dirty();
 109                 } });
 110
 111
 112         specialBoxProperties.put("textcolor", new SpecialBoxProperty() {
 113                 public Object get(Box b) {
 114                     if ((b.textcolor & 0xFF000000) == 0) return null;
 115                     String red = Integer.toHexString((b.textcolor & 0x00FF0000) >> 16);
 116                     String green = Integer.toHexString((b.textcolor & 0x0000FF00) >> 8);
 117                     String blue = Integer.toHexString(b.textcolor & 0x000000FF);
 118                     if (red.length() < 2) red = "0" + red;
 119                     if (blue.length() < 2) blue = "0" + blue;
 120                     if (green.length() < 2) green = "0" + green;
 121                     return "#" + red + green + blue;
 122                 }
 123                 public void put(Box b, Object value) {
 124                     int newtextcolor = b.color;
 125                     if (value == null) return;
 126                     String s = value.toString();
 127                     if (s.length() > 0 && s.charAt(0) == '#')
 128                         newtextcolor = 0xFF000000 |
 129                             (Integer.parseInt(s.substring(1, 3), 16) << 16) |
 130                             (Integer.parseInt(s.substring(3, 5), 16) << 8) |
 131                             Integer.parseInt(s.substring(5, 7), 16);
 132                     else if (s.equals("black")) newtextcolor = black;
 133                     else if (s.equals("blue")) newtextcolor = blue;
 134                     else if (s.equals("green")) newtextcolor = green;
 135                     else if (s.equals("cyan")) newtextcolor = cyan;
 136                     else if (s.equals("red")) newtextcolor = red;
 137                     else if (s.equals("magenta")) newtextcolor = magenta;
 138                     else if (s.equals("brown")) newtextcolor = brown;
 139                     else if (s.equals("lightGray")) newtextcolor = lightGray;
 140                     else if (s.equals("darkGray")) newtextcolor = darkGray;
 141                     else if (s.equals("brightBlue")) newtextcolor = brightBlue;
 142                     else if (s.equals("brightGreen")) newtextcolor = brightGreen;
 143                     else if (s.equals("brightCyan")) newtextcolor = brightCyan;
 144                     else if (s.equals("brightRed")) newtextcolor = brightRed;
 145                     else if (s.equals("pink")) newtextcolor = pink;
 146                     else if (s.equals("yellow")) newtextcolor = yellow;
 147                     else if (s.equals("white")) newtextcolor = white;
 148                     else if (Log.on) Log.log(this, "invalid textcolor " + s);
 149
 150                     if (newtextcolor == b.textcolor) return;
 151                     b.textcolor = newtextcolor;
 152                     b.dirty();
 153                 } });
 154
 155         specialBoxProperties.put("text", new SpecialBoxProperty() {
 156                 public Object get(Box b) { return b.text; }
 157                 public void put(Box b, Object value) {
 158                     String t = value == null ? "null" : value.toString();
 159                     if (t.equals(b.text)) return;
 160
 161                     for(int i=0; i<t.length(); i++)
 162                         if (Character.isISOControl(t.charAt(i))) {
 163                             if (Log.on) Log.log(this,
 164                                                 "ISO Control characters are not permitted in box text strings; offending character is ASCII " +
 165                                                ((int)t.charAt(i)));
 166                             /* FIXME: reinstate
 167                             return;
 168                             */
 169                         }
 170
 171                     // FIXME: don't know why this is needed
 172                     b.dirty();
 173
 174                     b.text = t;
 175                     b.textupdate();
 176                     b.dirty();
 177                 } });
 178
 179         specialBoxProperties.put("thisbox", new SpecialBoxProperty() {
 180                 public Object get(Box b) { return b; }
 181                 public void put(Box b, Object value) {
 182                     if (value == null) b.remove();
 183                     else if (value.equals("window")) Platform.createSurface(b, false, true);
 184                     else if (value.equals("frame")) Platform.createSurface(b, true, true);
 185                     else if (Log.on) Log.log(this, "put invalid value to 'thisbox' property: " + value);
 186                 }
 187             });
 188
 189         specialBoxProperties.put("orient", new SpecialBoxProperty() {
 190                 public Object get(Box b) {
 191                     if (b.redirect == null) return "horizontal";
 192                     else if (b.redirect != b) return get(b.redirect);
 193                     else if (b.o == 1) return "vertical";
 194                     else return "horizontal";
 195                 }
 196                 public void put(Box b, Object value) {
 197                     if (value == null) return;
 198                     if (b.redirect == null) return;
 199                     if (b.redirect != b) {
 200                         put(b.redirect, value);
 201                         return;
 202                     }
 203                     if (value.equals("vertical")) {
 204                         if (b.o == 1) return;
 205                         b.o = 1;
 206                         b.xo = 0;
 207                     } else if (value.equals("horizontal")) {
 208                         if (b.o == 0) return;
 209                         b.o = 0;
 210                         b.xo = 1;
 211                     } else if (Log.on)
 212                         Log.log(this, "invalid value put to orient property: " + value);
 213                     b.mark_for_prerender();
 214                     b.sync_cmin_to_children();
 215                 } });
 216
 217         specialBoxProperties.put("static", new SpecialBoxProperty() {
 218                 public Object get(Box b) {
 219                     String cfsn = JSObject.getCurrentFunctionSourceName();
 220                     for(int i=0; i<cfsn.length() - 1; i++)
 221                         if (cfsn.charAt(i) == '.' && (cfsn.charAt(i+1) == '_' || Character.isDigit(cfsn.charAt(i+1)))) {
 222                             cfsn = cfsn.substring(0, i);
 223                             break;
 224                         }
 225                     return Static.getStatic(cfsn);
 226                 }
 227                 public void put(Box b, Object value) { }
 228             });
 229
 230         specialBoxProperties.put("sizetoimage", new SpecialBoxProperty() {
 231                 public Object get(Box b) { return b.sizetoimage ? Boolean.TRUE : Boolean.FALSE; }
 232                 public void put(Box b, Object value) {
 233                     if (stob(value)) {
 234                         if (b.sizetoimage) return;
 235                         b.sizetoimage = true;
 236                         b.syncSizeToImage();
 237                     } else {
 238                         b.sizetoimage = false;
 239                     }
 240                 } });
 241
 242         specialBoxProperties.put("shrink", new SpecialBoxProperty() {
 243                 public Object get(Box b) { return (b.vshrink && b.hshrink) ? Boolean.TRUE : Boolean.FALSE; }
 244                 public void put(Box b, Object value) {
 245                     boolean newshrink = stob(value);
 246                     if (b.hshrink == newshrink && b.vshrink == newshrink) return;
 247                     b.hshrink = b.vshrink = newshrink;
 248                     if (b.hshrink) b.set(b.dmax, 0, Box.max(b.cmin(0), b.textdim(0) + 2 * b.pad(0), b.dmin(0)));
 249                     if (b.vshrink) b.set(b.dmax, 1, Box.max(b.cmin(1), b.textdim(1) + 2 * b.pad(1), b.dmin(1)));
 250                 } });
 251
 252         specialBoxProperties.put("hshrink", new SpecialBoxProperty() {
 253                 public Object get(Box b) { return new Boolean(b.hshrink); }
 254                 public void put(Box b, Object value) {
 255                     boolean newshrink = stob(value);
 256                     if (b.hshrink == newshrink) return;
 257                     b.hshrink = newshrink;
 258                     if (b.hshrink) b.set(b.dmax, 0, Box.max(b.cmin(0), b.textdim(0) + 2 * b.pad(0), b.dmin(0)));
 259                 }
 260             });
 261
 262         specialBoxProperties.put("vshrink", new SpecialBoxProperty() {
 263                 public Object get(Box b) { return b.vshrink ? Boolean.TRUE : Boolean.FALSE; }
 264                 public void put(Box b, Object value) {
 265                     boolean newshrink = stob(value);
 266                     if (b.vshrink == newshrink) return;
 267                     b.vshrink = newshrink;
 268                     if (b.vshrink) b.set(b.dmax, 1, Box.max(b.cmin(1), b.textdim(1) + 2 * b.pad(1), b.dmin(1)));
 269                 }
 270             });
 271
 272         specialBoxProperties.put("x", new SpecialBoxProperty() {
 273                 public Object get(Box b) {
 274                     if (b.surface == null) return new Integer(0);
 275                     if (b.invisible) return new Integer(0);
 276                     return new Integer(b.abs(0));
 277                 }
 278                 public void put(Box b, Object value) {
 279                     if (b.getParent() == null && b.surface != null) {
 280                         b.surface.setLocation(stoi(value), b.abs(1));
 281                         b.surface.centerSurfaceOnRender = false;
 282                     }
 283                     b.set(abs, 0, stosh(value));
 284                 }
 285             });
 286
 287         specialBoxProperties.put("y", new SpecialBoxProperty() {
 288                 public Object get(Box b) {
 289                     if (b.surface == null) return new Integer(0);
 290                     if (b.invisible) return new Integer(0);
 291                     return new Integer(b.abs(1));
 292                 }
 293                 public void put(Box b, Object value) {
 294                     if (b.getParent() == null && b.surface != null) {
 295                         b.surface.setLocation(b.abs(0), stoi(value));
 296                         b.surface.centerSurfaceOnRender = false;
 297                     }
 298                     b.set(abs, 1, stosh(value));
 299                 }
 300             });
 301
 302         specialBoxProperties.put("width", new SpecialBoxProperty() {
 303                 public Object get(Box b) { return new Integer(b.size(0)); }
 304                 public void put(Box b, Object value) {
 305                     if (b.sizetoimage) return;
 306                     if (b.getParent() == null && b.surface != null) {
 307                         b.set(size, 0, Box.max(Surface.scarPicture.getWidth(), stosh(value)));
 308                         b.mark_for_prerender();
 309                     } else {
 310                         b.set(dmax, 0, stosh(value));
 311                         b.set(dmin, 0, stosh(value));
 312                     }
 313                 } });
 314
 315         specialBoxProperties.put("height", new SpecialBoxProperty() {
 316                 public Object get(Box b) { return new Integer(b.size(1)); }
 317                 public void put(Box b, Object value) {
 318                     if (b.sizetoimage) return;
 319                     if (b.getParent() == null && b.surface != null) {
 320                         b.set(size, 1, Box.max(Surface.scarPicture.getHeight(), stosh(value)));
 321                         b.mark_for_prerender();
 322                     } else {
 323                         b.set(dmax, 1, stosh(value));
 324                         b.set(dmin, 1, stosh(value));
 325                     }
 326                 } });
 327
 328         specialBoxProperties.put("flex", new SpecialBoxProperty() {
 329                 public Object get(Box b) { return new Double(b.flex); }
 330                 public void put(Box b, Object value) {
 331                     if (value == null) return;
 332                     int newflex = stoi(value);
 333                     if (newflex == b.flex) return;
 334                     b.flex = newflex;
 335                     b.mark_for_prerender();
 336                 } });
 337
 338         specialBoxProperties.put("tile", new SpecialBoxProperty() {
 339                 public Object get(Box b) { return b.tile ? Boolean.TRUE : Boolean.FALSE; }
 340                 public void put(Box b, Object value) {
 341                     boolean newtile = stob(value);
 342                     if (newtile == b.tile) return;
 343                     b.tile = newtile;
 344                     b.dirty();
 345                 } });
 346
 347         specialBoxProperties.put("align", new SpecialBoxProperty() {
 348                 public Object get(Box b) {
 349                     if (b.align == -1) return "topleft";
 350                     else if (b.align == 1) return "bottomright";
 351                     else return "center";
 352                 }
 353                 public void put(Box b, Object value) {
 354                     String s = value == null ? "" : value.toString();
 355                     byte newalign = b.align;
 356                     if (s.equals("topleft")) newalign = -1;
 357                     else if (s.equals("bottomright")) newalign = 1;
 358                     else if (s.equals("center")) newalign = 0;
 359                     else if (Log.on) Log.log(this, "invalid value put to align property: " + value);
 360                     if (newalign == b.align) return;
 361                     b.align = newalign;
 362                     if (b.getParent() != null) b.getParent().mark_for_prerender();
 363                 } });
 364
 365         specialBoxProperties.put("invisible", new SpecialBoxProperty() {
 366                 public Object get(Box b) { return b.invisible ? Boolean.TRUE : Boolean.FALSE; }
 367                 public void put(Box b, Object value) {
 368                     boolean newinvisible = stob(value);
 369                     if (newinvisible == b.invisible) return;
 370                     b.invisible = newinvisible;
 371                     if (b.getParent() == null) {
 372                         if (b.surface != null) b.surface.setInvisible(newinvisible);
 373                     } else {
 374                         b.dirty();
 375                         b.getParent().mark_for_prerender();
 376                         b.getParent().sync_cmin_to_children();
 377                         b.getParent().dirty(b.pos(0), b.pos(1), b.size(0), b.size(1));
 378                         b.getParent().dirty(b.oldpos(0), b.oldpos(1), b.oldsize(0), b.oldsize(1));
 379                     }
 380                 }});
 381
 382         specialBoxProperties.put("absolute", new SpecialBoxProperty() {
 383                 public Object get(Box b) { return b.absolute ? Boolean.TRUE : Boolean.FALSE; }
 384                 public void put(Box b, Object value) {
 385                     boolean newabsolute = stob(value);
 386                     if (newabsolute == b.absolute) return;
 387                     b.absolute = newabsolute;
 388                     if (b.getParent() != null) {
 389                         b.getParent().mark_for_prerender();
 390                         b.getParent().sync_cmin_to_children();
 391                     }
 392                 } });
 393
 394         specialBoxProperties.put("image", new SpecialBoxProperty() {
 395                 public Object get(Box b) { return b.image == null ? null : Box.imageToNameMap.get(b.image); }
 396                 public void put(Box b, Object value) { b.setImage(value == null ? null : value.toString()); }
 397             });
 398
 399         specialBoxProperties.put("border", new SpecialBoxProperty() {
 400                 public Object get(Box b) { return b.border == null ? null : Box.imageToNameMap.get(b.border); }
 401                 public void put(Box b, Object value) { b.setBorder(value == null ? null : value.toString()); }
 402             });
 403
 404         specialBoxProperties.put("font", new SpecialBoxProperty() {
 405                 public Object get(Box b) { return b.font; }
 406                 public void put(Box b, Object value) {
 407                     if (value == null) value = Platform.getDefaultFont();
 408                     b.font = value.toString();
 409                     b.textupdate();
 410                     b.dirty();
 411                 } });
 412
 413         specialBoxProperties.put("globalx", new SpecialBoxProperty() {
 414                 public Object get(Box b) { return new Integer(b.getParent() == null || b.surface == null ? 0 : b.pos(0)); }
 415                 public void put(Box b, Object value) {
 416                     if (b.surface == null || b.getParent() == null) return;
 417                     b.put("x", null, new Integer(stoi(value) - stoi(get(b.getParent()))));
 418                 }
 419             });
 420
 421         specialBoxProperties.put("globaly", new SpecialBoxProperty() {
 422                 public Object get(Box b) { return new Integer(b.getParent() == null || b.surface == null ? 0 : b.pos(1)); }
 423                 public void put(Box b, Object value) {
 424                     if (b.surface == null || b.getParent() == null) return;
 425                     b.put("y", null, new Integer(stoi(value) - stoi(get(b.getParent()))));
 426                 }
 427             });
 428
 429         specialBoxProperties.put("cursor", new SpecialBoxProperty() {
 430                 public Object get(Box b) { return b.cursor; }
 431                 public void put(Box b, Object value) {
 432                     b.cursor = (String)value;
 433                     if (b.surface == null) return;
 434
 435                     // see if we need to update the surface cursor
 436                     String tempcursor = b.surface.cursor;
 437                     b.Move(b.surface.mousex, b.surface.mousey, b.surface.mousex, b.surface.mousey);
 438                     if (b.surface.cursor != tempcursor) b.surface.syncCursor();
 439                 }
 440             });
 441
 442         specialBoxProperties.put("mousex", new SpecialBoxProperty() {
 443                 public Object get(Box b) { return new Integer(b.surface == null ? 0 : b.surface.mousex - b.pos(0)); }
 444             });
 445
 446         specialBoxProperties.put("mousey", new SpecialBoxProperty() {
 447                 public Object get(Box b) { return new Integer(b.surface == null ? 0 : b.surface.mousey - b.pos(1)); }
 448             });
 449
 450         specialBoxProperties.put("xwt", new SpecialBoxProperty() {
 451                 public Object get(Box b) { return XWT.singleton; }
 452             });
 453
 454         specialBoxProperties.put("mouseinside", new SpecialBoxProperty() {
 455                 public Object get(Box b) { return b.mouseinside ? Boolean.TRUE : Boolean.FALSE; }
 456             });
 457
 458         specialBoxProperties.put("numchildren", new SpecialBoxProperty() {
 459                 public Object get(Box b) {
 460                     if (b.redirect == null) return new Integer(0);
 461                     if (b.redirect != b) return get(b.redirect);
 462                     return new Integer(b.numChildren());
 463                 } });
 464
 465         SpecialBoxProperty mouseEventHandler = new SpecialBoxProperty() {
 466                 public void put(String name, Box b, Object value) {
 467                     if (b.surface == null) return;
 468                     if (b.getParent() == null) {
 469                         if (b.surface.boxContainingMouse.getParent() != null)
 470                             b.surface.boxContainingMouse.put(name, b.surface.boxContainingMouse, value);
 471                     } else {
 472                         // check siblings
 473                         for(Box c = b.prevSibling(); c != null; c = c.prevSibling())
 474                             if (c.inside(c.surface.mousex, c.surface.mousey)) {
 475                                 c.put(name, c, value);
 476                                 return;
 477                             }
 478                         // move up a level
 479                         if (b.getParent() != null && b.getParent().getParent() != null)
 480                             b.getParent().put(name, b.getParent(), value);
 481                     }
 482                 }};
 483
 484         specialBoxProperties.put("Press1", mouseEventHandler);
 485         specialBoxProperties.put("Press2", mouseEventHandler);
 486         specialBoxProperties.put("Press3", mouseEventHandler);
 487         specialBoxProperties.put("Release1", mouseEventHandler);
 488         specialBoxProperties.put("Release2", mouseEventHandler);
 489         specialBoxProperties.put("Release3", mouseEventHandler);
 490         specialBoxProperties.put("Click1", mouseEventHandler);
 491         specialBoxProperties.put("Click2", mouseEventHandler);
 492         specialBoxProperties.put("Click3", mouseEventHandler);
 493         specialBoxProperties.put("DoubleClick1", mouseEventHandler);
 494         specialBoxProperties.put("DoubleClick2", mouseEventHandler);
 495         specialBoxProperties.put("DoubleClick3", mouseEventHandler);
 496
 497         specialBoxProperties.put("root", new SpecialBoxProperty() {
 498                 public Object get(Box b) {
 499                     if (b.surface == null) return null;
 500                     else if (b.getRoot() == null) return null;
 501                     else return b.getRoot().getRootProxy();
 502                 } });
 503
 504         specialBoxProperties.put("Minimized", new SpecialBoxProperty() {
 505                 public Object get(Box b) {
 506                     if (b.getParent() == null && b.surface != null) return b.surface.minimized ? Boolean.TRUE : Boolean.FALSE;
 507                     else return null;
 508                 }
 509                 public void put(Box b, Object value) {
 510                     if (b.surface == null) return;
 511                     boolean val = stob(value);
 512                     if (b.getParent() == null && b.surface.minimized != val) b.surface.setMinimized(val);
 513                 }
 514             });
 515
 516         specialBoxProperties.put("Maximized", new SpecialBoxProperty() {
 517                 public Object get(Box b) {
 518                     if (b.getParent() == null && b.surface != null) return b.surface.maximized ? Boolean.TRUE : Boolean.FALSE;
 519                     else return null;
 520                 }
 521                 public void put(Box b, Object value) {
 522                     if (b.surface == null) return;
 523                     boolean val = stob(value);
 524                     if (b.getParent() == null && b.surface.maximized != val) b.surface.setMaximized(val);
 525                 }
 526             });
 527
 528         specialBoxProperties.put("toback", new SpecialBoxProperty() {
 529                 public void put(Box b, Object value) {
 530                     if (b.getParent() == null && stob(value) && b.surface != null) b.surface.toBack();
 531                 }
 532             });
 533
 534         specialBoxProperties.put("tofront", new SpecialBoxProperty() {
 535                 public void put(Box b, Object value) {
 536                     if (b.getParent() == null && stob(value) && b.surface != null) b.surface.toFront();
 537                 }
 538             });
 539
 540         specialBoxProperties.put("hscar", new SpecialBoxProperty() {
 541                 public void put(Box b, Object value) {
 542                     if (b.getParent() == null && b.surface != null) {
 543                         b.surface.hscar = stoi(value);
 544                         b.surface.dirty(0, 0, b.surface.width, b.surface.height);
 545                         b.surface.Refresh();
 546                     }
 547                 }
 548             });
 549
 550         specialBoxProperties.put("vscar", new SpecialBoxProperty() {
 551                 public void put(Box b, Object value) {
 552                     if (b.getParent() == null && b.surface != null) {
 553                         b.surface.vscar = stoi(value);
 554                         b.surface.dirty(0, 0, b.surface.width, b.surface.height);
 555                         b.surface.Refresh();
 556                     }
 557                 }
 558             });
 559
 560         specialBoxProperties.put("Close", new SpecialBoxProperty() {
 561                 public void put(Box b, Object value) {
 562                     if (b.getParent() == null && b.surface != null) b.surface.dispose();
 563                 }
 564             });
 565
 566         // these are all do-nothings; just to prevent space from getting taken up in the params Hash.
 567         specialBoxProperties.put("KeyPressed", new SpecialBoxProperty());
 568         specialBoxProperties.put("KeyReleased", new SpecialBoxProperty());
 569         specialBoxProperties.put("PosChange", new SpecialBoxProperty());
 570         specialBoxProperties.put("SizeChange", new SpecialBoxProperty());
 571
 572         specialBoxProperties.put("hpad", new SpecialBoxProperty() {
 573                 public Object get(Box b) {
 574                     if (b.redirect == null) return new Integer(0);
 575                     if (b.redirect != b) return get(b.redirect);
 576                     return new Integer(b.pad(0));
 577                 }
 578                 public void put(Box b, Object value) {
 579                     if (b.redirect == null) return;
 580                     if (b.redirect != b) { put(b.redirect, value); return; }
 581                     short newval = stosh(value);
 582                     if (newval == b.pad(0)) return;
 583                     b.set(pad, 0, newval);
 584                 }
 585             });
 586
 587         specialBoxProperties.put("vpad", new SpecialBoxProperty() {
 588                 public Object get(Box b) {
 589                     if (b.redirect == null) return new Integer(0);
 590                     if (b.redirect != b) return get(b.redirect);
 591                     return new Integer(b.pad(1));
 592                 }
 593                 public void put(Box b, Object value) {
 594                     if (b.redirect == null) return;
 595                     if (b.redirect != b) { put(b.redirect, value); return; }
 596                     short newval = stosh(value);
 597                     if (newval == b.pad(1)) return;
 598                     b.set(pad, 1, newval);
 599                 }
 600             });
 601
 602         specialBoxProperties.put("indexof", new SpecialBoxProperty() {
 603                 public Object get(Box b) { return b.indexof(); }
 604             });
 605
 606         specialBoxProperties.put("minwidth", new SpecialBoxProperty() {
 607                 public Object get(Box b) { return new Integer(b.dmin(0)); }
 608                 public void put(Box b, Object value) {
 609                     if (b.sizetoimage) return;
 610                     b.set(dmin, 0, stosh(value));
 611                 }
 612             });
 613
 614         specialBoxProperties.put("maxwidth", new SpecialBoxProperty() {
 615                 public Object get(Box b) { return new Integer(b.dmax(0)); }
 616                 public void put(Box b, Object value) {
 617                     if (b.sizetoimage) return;
 618                     b.set(dmax, 0, stosh(value));
 619                 }
 620             });
 621
 622         specialBoxProperties.put("minheight", new SpecialBoxProperty() {
 623                 public Object get(Box b) { return new Integer(b.dmin(1)); }
 624                 public void put(Box b, Object value) {
 625                     if (b.sizetoimage) return;
 626                     b.set(dmin, 1, stosh(value));
 627                 }
 628             });
 629
 630         specialBoxProperties.put("maxheight", new SpecialBoxProperty() {
 631                 public Object get(Box b) { return new Integer(b.dmax(1)); }
 632                 public void put(Box b, Object value) {
 633                     if (b.sizetoimage) return;
 634                     b.set(dmax, 1, stosh(value));
 635                 }
 636             });
 637     }
 638
 639
 640     /** helper that converts a String to a boolean according to JavaScript coercion rules */
 641     public static boolean stob(Object o) {
 642         if (o == null) return false;
 643         return Boolean.TRUE.equals(o) || "true".equals(o);
 644     }
 645
 646     /** helper that converts a String to an int according to JavaScript coercion rules */
 647     public static int stoi(Object o) {
 648         if (o == null) return 0;
 649         if (o instanceof Integer) return ((Integer)o).intValue();
 650
 651         String s;
 652         if (!(o instanceof String)) s = o.toString();
 653         else s = (String)o;
 654
 655         try { return Integer.parseInt(s.indexOf('.') == -1 ? s : s.substring(0, s.indexOf('.'))); }
 656         catch (NumberFormatException e) { return 0; }
 657     }
 658
 659     /** helper that converts a String to a short according to JavaScript coercion rules */
 660     public static short stosh(Object o) {
 661         if (o == null) return 0;
 662         if (o instanceof Number) return ((Number)o).shortValue();
 663
 664         String s;
 665         if (!(o instanceof String)) s = o.toString();
 666         else s = (String)o;
 667
 668         try { return Short.parseShort(s.indexOf('.') == -1 ? s : s.substring(0, s.indexOf('.'))); }
 669         catch (NumberFormatException e) { return 0; }
 670     }
 671
 672 }
 673
 674
 675