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 + "\" at " +
 105                                              Context.enter().interpreterSourceFile + ":" + Context.enter().interpreterLine);
 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 color \"" + s + "\" at " +
 149                                              Context.enter().interpreterSourceFile + ":" + Context.enter().interpreterLine);
 150
 151                     if (newtextcolor == b.textcolor) return;
 152                     b.textcolor = newtextcolor;
 153                     b.dirty();
 154                 } });
 155
 156         specialBoxProperties.put("text", new SpecialBoxProperty() {
 157                 public Object get(Box b) { return b.text; }
 158                 public void put(Box b, Object value) {
 159                     String t = value == null ? "null" : value.toString();
 160                     if (t.equals(b.text)) return;
 161
 162                     for(int i=0; i<t.length(); i++)
 163                         if (Character.isISOControl(t.charAt(i))) {
 164                             if (Log.on) Log.log(this,
 165                                                 "ISO Control characters are not permitted in box text strings; offending character is ASCII " +
 166                                                ((int)t.charAt(i)));
 167                             /* FIXME: reinstate
 168                             return;
 169                             */
 170                         }
 171
 172                     // FIXME: don't know why this is needed
 173                     b.dirty();
 174
 175                     b.text = t;
 176                     b.textupdate();
 177                     b.dirty();
 178                 } });
 179
 180         specialBoxProperties.put("thisbox", new SpecialBoxProperty() {
 181                 public Object get(Box b) { return b; }
 182                 public void put(Box b, Object value) {
 183                     if (value == null) b.remove();
 184                     else if (value.equals("window") || value.equals("frame")) {
 185                         if (b.redirect != b && Log.on)
 186                             Log.log(this, "WARNING: you have created a surface whose root box's redirect is not itself " +
 187                                     "-- this isn't usually a good idea");
 188                         Platform.createSurface(b, value.equals("frame"), true);
 189                     } else if (Log.on) Log.log(this, "put invalid value to 'thisbox' property: " + value);
 190                 }
 191             });
 192
 193         specialBoxProperties.put("orient", new SpecialBoxProperty() {
 194                 public Object get(Box b) {
 195                     if (b.redirect == null) return "horizontal";
 196                     else if (b.redirect != b) return get(b.redirect);
 197                     else if (b.o == 1) return "vertical";
 198                     else return "horizontal";
 199                 }
 200                 public void put(Box b, Object value) {
 201                     if (value == null) return;
 202                     if (b.redirect == null) return;
 203                     if (b.redirect != b) {
 204                         put(b.redirect, value);
 205                         return;
 206                     }
 207                     if (value.equals("vertical")) {
 208                         if (b.o == 1) return;
 209                         b.o = 1;
 210                         b.xo = 0;
 211                     } else if (value.equals("horizontal")) {
 212                         if (b.o == 0) return;
 213                         b.o = 0;
 214                         b.xo = 1;
 215                     } else if (Log.on)
 216                         Log.log(this, "invalid value put to orient property: " + value);
 217                     b.mark_for_prerender();
 218                     b.sync_cmin_to_children();
 219                 } });
 220
 221         specialBoxProperties.put("static", new SpecialBoxProperty() {
 222                 public Object get(Box b) {
 223                     String cfsn = JSObject.getCurrentFunctionSourceName();
 224                     for(int i=0; i<cfsn.length() - 1; i++)
 225                         if (cfsn.charAt(i) == '.' && (cfsn.charAt(i+1) == '_' || Character.isDigit(cfsn.charAt(i+1)))) {
 226                             cfsn = cfsn.substring(0, i);
 227                             break;
 228                         }
 229                     return Static.getStatic(cfsn);
 230                 }
 231                 public void put(Box b, Object value) { }
 232             });
 233
 234         specialBoxProperties.put("sizetoimage", new SpecialBoxProperty() {
 235                 public Object get(Box b) { return b.sizetoimage ? Boolean.TRUE : Boolean.FALSE; }
 236                 public void put(Box b, Object value) {
 237                     if (stob(value)) {
 238                         if (b.sizetoimage) return;
 239                         b.sizetoimage = true;
 240                         b.syncSizeToImage();
 241                     } else {
 242                         b.sizetoimage = false;
 243                     }
 244                 } });
 245
 246         specialBoxProperties.put("fixedaspect", new SpecialBoxProperty() {
 247                 public Object get(Box b) { return b.sizetoimage ? Boolean.TRUE : Boolean.FALSE; }
 248                 public void put(Box b, Object value) {
 249                     boolean newval = stob(value);
 250                     if (newval == b.fixedaspect) return;
 251                     b.fixedaspect = newval;
 252                     b.dirty();
 253                 } });
 254
 255         specialBoxProperties.put("shrink", new SpecialBoxProperty() {
 256                 public Object get(Box b) { return (b.vshrink && b.hshrink) ? Boolean.TRUE : Boolean.FALSE; }
 257                 public void put(Box b, Object value) {
 258                     boolean newshrink = stob(value);
 259                     if (b.hshrink == newshrink && b.vshrink == newshrink) return;
 260                     b.hshrink = b.vshrink = newshrink;
 261                     if (b.hshrink) b.set(b.dmax, 0, Box.max(b.cmin(0), b.textdim(0) + 2 * b.pad(0), b.dmin(0)));
 262                     if (b.vshrink) b.set(b.dmax, 1, Box.max(b.cmin(1), b.textdim(1) + 2 * b.pad(1), b.dmin(1)));
 263                 } });
 264
 265         specialBoxProperties.put("hshrink", new SpecialBoxProperty() {
 266                 public Object get(Box b) { return new Boolean(b.hshrink); }
 267                 public void put(Box b, Object value) {
 268                     boolean newshrink = stob(value);
 269                     if (b.hshrink == newshrink) return;
 270                     b.hshrink = newshrink;
 271                     if (b.hshrink) b.set(b.dmax, 0, Box.max(b.cmin(0), b.textdim(0) + 2 * b.pad(0), b.dmin(0)));
 272                 }
 273             });
 274
 275         specialBoxProperties.put("vshrink", new SpecialBoxProperty() {
 276                 public Object get(Box b) { return b.vshrink ? Boolean.TRUE : Boolean.FALSE; }
 277                 public void put(Box b, Object value) {
 278                     boolean newshrink = stob(value);
 279                     if (b.vshrink == newshrink) return;
 280                     b.vshrink = newshrink;
 281                     if (b.vshrink) b.set(b.dmax, 1, Box.max(b.cmin(1), b.textdim(1) + 2 * b.pad(1), b.dmin(1)));
 282                 }
 283             });
 284
 285         specialBoxProperties.put("x", new SpecialBoxProperty() {
 286                 public Object get(Box b) {
 287                     if (b.surface == null) return new Integer(0);
 288                     if (b.invisible) return new Integer(0);
 289                     return new Integer(b.abs(0));
 290                 }
 291                 public void put(Box b, Object value) {
 292                     if (b.getParent() == null && b.surface != null) {
 293                         b.surface.setLocation(stoi(value), b.abs(1));
 294                         b.surface.centerSurfaceOnRender = false;
 295                     }
 296                     b.set(abs, 0, stosh(value));
 297                 }
 298             });
 299
 300         specialBoxProperties.put("y", new SpecialBoxProperty() {
 301                 public Object get(Box b) {
 302                     if (b.surface == null) return new Integer(0);
 303                     if (b.invisible) return new Integer(0);
 304                     return new Integer(b.abs(1));
 305                 }
 306                 public void put(Box b, Object value) {
 307                     if (b.getParent() == null && b.surface != null) {
 308                         b.surface.setLocation(b.abs(0), stoi(value));
 309                         b.surface.centerSurfaceOnRender = false;
 310                     }
 311                     b.set(abs, 1, stosh(value));
 312                 }
 313             });
 314
 315         specialBoxProperties.put("width", new SpecialBoxProperty() {
 316                 public Object get(Box b) { return new Integer(b.size(0)); }
 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, 0, Box.max(Surface.scarPicture.getWidth(), stosh(value)));
 321                         b.mark_for_prerender();
 322                     } else {
 323                         b.set(dmax, 0, stosh(value));
 324                         b.set(dmin, 0, stosh(value));
 325                     }
 326                 } });
 327
 328         specialBoxProperties.put("height", new SpecialBoxProperty() {
 329                 public Object get(Box b) { return new Integer(b.size(1)); }
 330                 public void put(Box b, Object value) {
 331                     if (b.sizetoimage) return;
 332                     if (b.getParent() == null && b.surface != null) {
 333                         b.set(size, 1, Box.max(Surface.scarPicture.getHeight(), stosh(value)));
 334                         b.mark_for_prerender();
 335                     } else {
 336                         b.set(dmax, 1, stosh(value));
 337                         b.set(dmin, 1, stosh(value));
 338                     }
 339                 } });
 340
 341         specialBoxProperties.put("flex", new SpecialBoxProperty() {
 342                 public Object get(Box b) { return new Double(b.flex); }
 343                 public void put(Box b, Object value) {
 344                     if (value == null) return;
 345                     int newflex = stoi(value);
 346                     if (newflex == b.flex) return;
 347                     b.flex = newflex;
 348                     b.mark_for_prerender();
 349                 } });
 350
 351         specialBoxProperties.put("tile", new SpecialBoxProperty() {
 352                 public Object get(Box b) { return b.tile ? Boolean.TRUE : Boolean.FALSE; }
 353                 public void put(Box b, Object value) {
 354                     boolean newtile = stob(value);
 355                     if (newtile == b.tile) return;
 356                     b.tile = newtile;
 357                     b.dirty();
 358                 } });
 359
 360         specialBoxProperties.put("align", new SpecialBoxProperty() {
 361                 public Object get(Box b) {
 362                     if (b.align == -1) return "topleft";
 363                     else if (b.align == 1) return "bottomright";
 364                     else return "center";
 365                 }
 366                 public void put(Box b, Object value) {
 367                     String s = value == null ? "" : value.toString();
 368                     byte newalign = b.align;
 369                     if (s.equals("topleft")) newalign = -1;
 370                     else if (s.equals("bottomright")) newalign = 1;
 371                     else if (s.equals("center")) newalign = 0;
 372                     else if (Log.on) Log.log(this, "invalid value put to align property: " + value);
 373                     if (newalign == b.align) return;
 374                     b.align = newalign;
 375                     if (b.getParent() != null) b.getParent().mark_for_prerender();
 376                 } });
 377
 378         specialBoxProperties.put("invisible", new SpecialBoxProperty() {
 379                 public Object get(Box b) { return b.invisible ? Boolean.TRUE : Boolean.FALSE; }
 380                 public void put(Box b, Object value) {
 381                     boolean newinvisible = stob(value);
 382                     if (newinvisible == b.invisible) return;
 383                     b.invisible = newinvisible;
 384                     if (b.getParent() == null) {
 385                         if (b.surface != null) b.surface.setInvisible(newinvisible);
 386                     } else {
 387                         b.dirty();
 388                         b.getParent().mark_for_prerender();
 389                         b.getParent().sync_cmin_to_children();
 390                         b.getParent().dirty(b.pos(0), b.pos(1), b.size(0), b.size(1));
 391                         b.getParent().dirty(b.oldpos(0), b.oldpos(1), b.oldsize(0), b.oldsize(1));
 392                     }
 393                 }});
 394
 395         specialBoxProperties.put("absolute", new SpecialBoxProperty() {
 396                 public Object get(Box b) { return b.absolute ? Boolean.TRUE : Boolean.FALSE; }
 397                 public void put(Box b, Object value) {
 398                     boolean newabsolute = stob(value);
 399                     if (newabsolute == b.absolute) return;
 400                     b.absolute = newabsolute;
 401                     if (b.getParent() != null) {
 402                         b.getParent().mark_for_prerender();
 403                         b.getParent().sync_cmin_to_children();
 404                     }
 405                 } });
 406
 407         specialBoxProperties.put("image", new SpecialBoxProperty() {
 408                 public Object get(Box b) { return b.image == null ? null : Box.imageToNameMap.get(b.image); }
 409                 public void put(Box b, Object value) { b.setImage(value == null ? null : value.toString()); }
 410             });
 411
 412         specialBoxProperties.put("border", new SpecialBoxProperty() {
 413                 public Object get(Box b) { return b.border == null ? null : Box.imageToNameMap.get(b.border); }
 414                 public void put(Box b, Object value) { b.setBorder(value == null ? null : value.toString()); }
 415             });
 416
 417         specialBoxProperties.put("font", new SpecialBoxProperty() {
 418                 public Object get(Box b) { return b.font; }
 419                 public void put(Box b, Object value) {
 420                     if (value == null) value = Platform.getDefaultFont();
 421                     b.font = value.toString();
 422                     b.textupdate();
 423                     b.dirty();
 424                 } });
 425
 426         specialBoxProperties.put("globalx", new SpecialBoxProperty() {
 427                 public Object get(Box b) { return new Integer(b.getParent() == null || b.surface == null ? 0 : b.pos(0)); }
 428                 public void put(Box b, Object value) {
 429                     if (b.surface == null || b.getParent() == null) return;
 430                     b.put("x", null, new Integer(stoi(value) - stoi(get(b.getParent()))));
 431                 }
 432             });
 433
 434         specialBoxProperties.put("globaly", new SpecialBoxProperty() {
 435                 public Object get(Box b) { return new Integer(b.getParent() == null || b.surface == null ? 0 : b.pos(1)); }
 436                 public void put(Box b, Object value) {
 437                     if (b.surface == null || b.getParent() == null) return;
 438                     b.put("y", null, new Integer(stoi(value) - stoi(get(b.getParent()))));
 439                 }
 440             });
 441
 442         specialBoxProperties.put("cursor", new SpecialBoxProperty() {
 443                 public Object get(Box b) { return b.cursor; }
 444                 public void put(Box b, Object value) {
 445                     b.cursor = (String)value;
 446                     if (b.surface == null) return;
 447
 448                     // see if we need to update the surface cursor
 449                     String tempcursor = b.surface.cursor;
 450                     b.Move(b.surface.mousex, b.surface.mousey, b.surface.mousex, b.surface.mousey);
 451                     if (b.surface.cursor != tempcursor) b.surface.syncCursor();
 452                 }
 453             });
 454
 455         specialBoxProperties.put("mousex", new SpecialBoxProperty() {
 456                 public Object get(Box b) { return new Integer(b.surface == null ? 0 : b.surface.mousex - b.pos(0)); }
 457             });
 458
 459         specialBoxProperties.put("mousey", new SpecialBoxProperty() {
 460                 public Object get(Box b) { return new Integer(b.surface == null ? 0 : b.surface.mousey - b.pos(1)); }
 461             });
 462
 463         specialBoxProperties.put("xwt", new SpecialBoxProperty() {
 464                 public Object get(Box b) { return XWT.singleton; }
 465             });
 466
 467         specialBoxProperties.put("mouseinside", new SpecialBoxProperty() {
 468                 public Object get(Box b) { return b.mouseinside ? Boolean.TRUE : Boolean.FALSE; }
 469             });
 470
 471         specialBoxProperties.put("numchildren", new SpecialBoxProperty() {
 472                 public Object get(Box b) {
 473                     if (b.redirect == null) return new Integer(0);
 474                     if (b.redirect != b) return get(b.redirect);
 475                     return new Integer(b.numChildren());
 476                 } });
 477
 478         SpecialBoxProperty mouseEventHandler = new SpecialBoxProperty() {
 479                 public void put(String name, Box b, Object value) {
 480                     if (b.surface == null) return;
 481                     if (b.getParent() == null) {
 482                         if (b.surface.boxContainingMouse != null && b.surface.boxContainingMouse.getParent() != null)
 483                             b.surface.boxContainingMouse.put(name, b.surface.boxContainingMouse, value);
 484                     } else {
 485                         // check siblings
 486                         for(Box c = b.prevSibling(); c != null; c = c.prevSibling())
 487                             if (c.inside(c.surface.mousex, c.surface.mousey)) {
 488                                 c.put(name, c, value);
 489                                 return;
 490                             }
 491                         // move up a level
 492                         if (b.getParent() != null && b.getParent().getParent() != null)
 493                             b.getParent().put(name, b.getParent(), value);
 494                     }
 495                 }};
 496
 497         specialBoxProperties.put("Press1", mouseEventHandler);
 498         specialBoxProperties.put("Press2", mouseEventHandler);
 499         specialBoxProperties.put("Press3", mouseEventHandler);
 500         specialBoxProperties.put("Release1", mouseEventHandler);
 501         specialBoxProperties.put("Release2", mouseEventHandler);
 502         specialBoxProperties.put("Release3", mouseEventHandler);
 503         specialBoxProperties.put("Click1", mouseEventHandler);
 504         specialBoxProperties.put("Click2", mouseEventHandler);
 505         specialBoxProperties.put("Click3", mouseEventHandler);
 506         specialBoxProperties.put("DoubleClick1", mouseEventHandler);
 507         specialBoxProperties.put("DoubleClick2", mouseEventHandler);
 508         specialBoxProperties.put("DoubleClick3", mouseEventHandler);
 509
 510         specialBoxProperties.put("root", new SpecialBoxProperty() {
 511                 public Object get(Box b) {
 512                     if (b.surface == null) return null;
 513                     else if (b.getRoot() == null) return null;
 514                     else if (b.getParent() == null) return b;
 515                     else return b.getRoot().getRootProxy();
 516                 } });
 517
 518         specialBoxProperties.put("Minimized", new SpecialBoxProperty() {
 519                 public Object get(Box b) {
 520                     if (b.getParent() == null && b.surface != null) return b.surface.minimized ? Boolean.TRUE : Boolean.FALSE;
 521                     else return null;
 522                 }
 523                 public void put(Box b, Object value) {
 524                     if (b.surface == null) return;
 525                     boolean val = stob(value);
 526                     if (b.getParent() == null && b.surface.minimized != val) b.surface.setMinimized(val);
 527                 }
 528             });
 529
 530         specialBoxProperties.put("Maximized", new SpecialBoxProperty() {
 531                 public Object get(Box b) {
 532                     if (b.getParent() == null && b.surface != null) return b.surface.maximized ? Boolean.TRUE : Boolean.FALSE;
 533                     else return null;
 534                 }
 535                 public void put(Box b, Object value) {
 536                     if (b.surface == null) return;
 537                     boolean val = stob(value);
 538                     if (b.getParent() == null && b.surface.maximized != val) b.surface.setMaximized(val);
 539                 }
 540             });
 541
 542         specialBoxProperties.put("toback", new SpecialBoxProperty() {
 543                 public void put(Box b, Object value) {
 544                     if (b.getParent() == null && stob(value) && b.surface != null) b.surface.toBack();
 545                 }
 546             });
 547
 548         specialBoxProperties.put("tofront", new SpecialBoxProperty() {
 549                 public void put(Box b, Object value) {
 550                     if (b.getParent() == null && stob(value) && b.surface != null) b.surface.toFront();
 551                 }
 552             });
 553
 554         specialBoxProperties.put("hscar", new SpecialBoxProperty() {
 555                 public void put(Box b, Object value) {
 556                     if (b.getParent() == null && b.surface != null) {
 557                         b.surface.hscar = stoi(value);
 558                         b.surface.dirty(0, 0, b.surface.width, b.surface.height);
 559                         b.surface.Refresh();
 560                     }
 561                 }
 562             });
 563
 564         specialBoxProperties.put("vscar", new SpecialBoxProperty() {
 565                 public void put(Box b, Object value) {
 566                     if (b.getParent() == null && b.surface != null) {
 567                         b.surface.vscar = stoi(value);
 568                         b.surface.dirty(0, 0, b.surface.width, b.surface.height);
 569                         b.surface.Refresh();
 570                     }
 571                 }
 572             });
 573
 574         specialBoxProperties.put("Close", new SpecialBoxProperty() {
 575                 public void put(Box b, Object value) {
 576                     if (b.getParent() == null && b.surface != null) b.surface.dispose();
 577                 }
 578             });
 579
 580         // these are all do-nothings; just to prevent space from getting taken up in the params Hash.
 581         specialBoxProperties.put("KeyPressed", new SpecialBoxProperty());
 582         specialBoxProperties.put("KeyReleased", new SpecialBoxProperty());
 583         specialBoxProperties.put("PosChange", new SpecialBoxProperty());
 584         specialBoxProperties.put("SizeChange", new SpecialBoxProperty());
 585
 586         specialBoxProperties.put("hpad", new SpecialBoxProperty() {
 587                 public Object get(Box b) {
 588                     if (b.redirect == null) return new Integer(0);
 589                     if (b.redirect != b) return get(b.redirect);
 590                     return new Integer(b.pad(0));
 591                 }
 592                 public void put(Box b, Object value) {
 593                     if (b.redirect == null) return;
 594                     if (b.redirect != b) { put(b.redirect, value); return; }
 595                     short newval = stosh(value);
 596                     if (newval == b.pad(0)) return;
 597                     b.set(pad, 0, newval);
 598                 }
 599             });
 600
 601         specialBoxProperties.put("vpad", new SpecialBoxProperty() {
 602                 public Object get(Box b) {
 603                     if (b.redirect == null) return new Integer(0);
 604                     if (b.redirect != b) return get(b.redirect);
 605                     return new Integer(b.pad(1));
 606                 }
 607                 public void put(Box b, Object value) {
 608                     if (b.redirect == null) return;
 609                     if (b.redirect != b) { put(b.redirect, value); return; }
 610                     short newval = stosh(value);
 611                     if (newval == b.pad(1)) return;
 612                     b.set(pad, 1, newval);
 613                 }
 614             });
 615
 616         specialBoxProperties.put("indexof", new SpecialBoxProperty() {
 617                 public Object get(Box b) { return b.indexof(); }
 618             });
 619
 620         specialBoxProperties.put("minwidth", new SpecialBoxProperty() {
 621                 public Object get(Box b) { return new Integer(b.dmin(0)); }
 622                 public void put(Box b, Object value) {
 623                     if (b.sizetoimage) return;
 624                     b.set(dmin, 0, stosh(value));
 625                 }
 626             });
 627
 628         specialBoxProperties.put("maxwidth", new SpecialBoxProperty() {
 629                 public Object get(Box b) { return new Integer(b.dmax(0)); }
 630                 public void put(Box b, Object value) {
 631                     if (b.sizetoimage) return;
 632                     b.set(dmax, 0, stosh(value));
 633                 }
 634             });
 635
 636         specialBoxProperties.put("minheight", new SpecialBoxProperty() {
 637                 public Object get(Box b) { return new Integer(b.dmin(1)); }
 638                 public void put(Box b, Object value) {
 639                     if (b.sizetoimage) return;
 640                     b.set(dmin, 1, stosh(value));
 641                 }
 642             });
 643
 644         specialBoxProperties.put("maxheight", new SpecialBoxProperty() {
 645                 public Object get(Box b) { return new Integer(b.dmax(1)); }
 646                 public void put(Box b, Object value) {
 647                     if (b.sizetoimage) return;
 648                     b.set(dmax, 1, stosh(value));
 649                 }
 650             });
 651
 652         specialBoxProperties.put("redirect", new SpecialBoxProperty() {
 653                 public void put(Box b, Object value) { }
 654                 public Object get(Box b) {
 655                     if (b.redirect == null) return null;
 656                     if (b.redirect == b) return Boolean.TRUE;
 657                     return get(b.redirect);
 658                 }
 659             });
 660     }
 661
 662
 663     /** helper that converts a String to a boolean according to JavaScript coercion rules */
 664     public static boolean stob(Object o) {
 665         if (o == null) return false;
 666         return Boolean.TRUE.equals(o) || "true".equals(o);
 667     }
 668
 669     /** helper that converts a String to an int according to JavaScript coercion rules */
 670     public static int stoi(Object o) {
 671         if (o == null) return 0;
 672         if (o instanceof Integer) return ((Integer)o).intValue();
 673
 674         String s;
 675         if (!(o instanceof String)) s = o.toString();
 676         else s = (String)o;
 677
 678         try { return Integer.parseInt(s.indexOf('.') == -1 ? s : s.substring(0, s.indexOf('.'))); }
 679         catch (NumberFormatException e) { return 0; }
 680     }
 681
 682     /** helper that converts a String to a short according to JavaScript coercion rules */
 683     public static short stosh(Object o) {
 684         if (o == null) return 0;
 685         if (o instanceof Number) return ((Number)o).shortValue();
 686
 687         String s;
 688         if (!(o instanceof String)) s = o.toString();
 689         else s = (String)o;
 690
 691         try { return Short.parseShort(s.indexOf('.') == -1 ? s : s.substring(0, s.indexOf('.'))); }
 692         catch (NumberFormatException e) { return 0; }
 693     }
 694
 695 }
 696
 697
 698