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                     String s = value == null ? null : value.toString();
 126                     if (s.length() > 0 && s.charAt(0) == '#')
 127                         newtextcolor = 0xFF000000 |
 128                             (Integer.parseInt(s.substring(1, 3), 16) << 16) |
 129                             (Integer.parseInt(s.substring(3, 5), 16) << 8) |
 130                             Integer.parseInt(s.substring(5, 7), 16);
 131                     else if (s.equals("black")) newtextcolor = black;
 132                     else if (s.equals("blue")) newtextcolor = blue;
 133                     else if (s.equals("green")) newtextcolor = green;
 134                     else if (s.equals("cyan")) newtextcolor = cyan;
 135                     else if (s.equals("red")) newtextcolor = red;
 136                     else if (s.equals("magenta")) newtextcolor = magenta;
 137                     else if (s.equals("brown")) newtextcolor = brown;
 138                     else if (s.equals("lightGray")) newtextcolor = lightGray;
 139                     else if (s.equals("darkGray")) newtextcolor = darkGray;
 140                     else if (s.equals("brightBlue")) newtextcolor = brightBlue;
 141                     else if (s.equals("brightGreen")) newtextcolor = brightGreen;
 142                     else if (s.equals("brightCyan")) newtextcolor = brightCyan;
 143                     else if (s.equals("brightRed")) newtextcolor = brightRed;
 144                     else if (s.equals("pink")) newtextcolor = pink;
 145                     else if (s.equals("yellow")) newtextcolor = yellow;
 146                     else if (s.equals("white")) newtextcolor = white;
 147                     else if (Log.on) Log.log(this, "invalid textcolor " + s);
 148
 149                     if (newtextcolor == b.textcolor) return;
 150                     b.textcolor = newtextcolor;
 151                     b.dirty();
 152                 } });
 153
 154         specialBoxProperties.put("text", new SpecialBoxProperty() {
 155                 public Object get(Box b) { return b.text; }
 156                 public void put(Box b, Object value) {
 157                     String t = value == null ? "null" : value.toString();
 158                     if (t.equals(b.text)) return;
 159
 160                     for(int i=0; i<t.length(); i++)
 161                         if (Character.isISOControl(t.charAt(i))) {
 162                             if (Log.on) Log.log(this,
 163                                                 "ISO Control characters are not permitted in box text strings; offending character is ASCII " +
 164                                                ((int)t.charAt(i)));
 165                             /* FIXME: reinstate
 166                             return;
 167                             */
 168                         }
 169
 170                     b.text = t;
 171                     b.textupdate();
 172                     b.dirty();
 173                 } });
 174
 175         specialBoxProperties.put("thisbox", new SpecialBoxProperty() {
 176                 public Object get(Box b) { return b; }
 177                 public void put(Box b, Object value) {
 178                     if (value == null) b.remove();
 179                     else if (value.equals("window")) Platform.createSurface(b, false, true);
 180                     else if (value.equals("frame")) Platform.createSurface(b, true, true);
 181                     else if (Log.on) Log.log(this, "put invalid value to 'thisbox' property: " + value);
 182                 }
 183             });
 184
 185         specialBoxProperties.put("orient", new SpecialBoxProperty() {
 186                 public Object get(Box b) {
 187                     if (b.redirect == null) return "horizontal";
 188                     else if (b.redirect != b) return get(b.redirect);
 189                     else if (b.o == 1) return "vertical";
 190                     else return "horizontal";
 191                 }
 192                 public void put(Box b, Object value) {
 193                     if (value == null) return;
 194                     if (b.redirect == null) return;
 195                     if (b.redirect != b) {
 196                         put(b.redirect, value);
 197                         return;
 198                     }
 199                     if (value.equals("vertical")) {
 200                         if (b.o == 1) return;
 201                         b.o = 1;
 202                         b.xo = 0;
 203                     } else if (value.equals("horizontal")) {
 204                         if (b.o == 0) return;
 205                         b.o = 0;
 206                         b.xo = 1;
 207                     } else if (Log.on)
 208                         Log.log(this, "invalid value put to orient property: " + value);
 209                     b.mark_for_prerender();
 210                     b.sync_cmin_to_children();
 211                 } });
 212
 213         specialBoxProperties.put("static", new SpecialBoxProperty() {
 214                 public Object get(Box b) {
 215                     String cfsn = JSObject.getCurrentFunctionSourceName();
 216                     for(int i=0; i<cfsn.length() - 1; i++)
 217                         if (cfsn.charAt(i) == '.' && (cfsn.charAt(i+1) == '_' || Character.isDigit(cfsn.charAt(i+1)))) {
 218                             cfsn = cfsn.substring(0, i);
 219                             break;
 220                         }
 221                     return Static.getStatic(cfsn);
 222                 }
 223                 public void put(Box b, Object value) { }
 224             });
 225
 226         specialBoxProperties.put("sizetoimage", new SpecialBoxProperty() {
 227                 public Object get(Box b) { return b.sizetoimage ? Boolean.TRUE : Boolean.FALSE; }
 228                 public void put(Box b, Object value) {
 229                     if (stob(value)) {
 230                         if (b.sizetoimage) return;
 231                         b.sizetoimage = true;
 232                         b.syncSizeToImage();
 233                     } else {
 234                         b.sizetoimage = false;
 235                     }
 236                 } });
 237
 238         specialBoxProperties.put("shrink", new SpecialBoxProperty() {
 239                 public Object get(Box b) { return (b.vshrink && b.hshrink) ? Boolean.TRUE : Boolean.FALSE; }
 240                 public void put(Box b, Object value) {
 241                     boolean newshrink = stob(value);
 242                     if (b.hshrink == newshrink && b.vshrink == newshrink) return;
 243                     b.hshrink = b.vshrink = newshrink;
 244                     if (b.hshrink) b.set(b.dmax, 0, Box.max(b.cmin(0), b.textdim(0) + 2 * b.pad(0), b.dmin(0)));
 245                     if (b.vshrink) b.set(b.dmax, 1, Box.max(b.cmin(1), b.textdim(1) + 2 * b.pad(1), b.dmin(1)));
 246                 } });
 247
 248         specialBoxProperties.put("hshrink", new SpecialBoxProperty() {
 249                 public Object get(Box b) { return new Boolean(b.hshrink); }
 250                 public void put(Box b, Object value) {
 251                     boolean newshrink = stob(value);
 252                     if (b.hshrink == newshrink) return;
 253                     b.hshrink = newshrink;
 254                     if (b.hshrink) b.set(b.dmax, 0, Box.max(b.cmin(0), b.textdim(0) + 2 * b.pad(0), b.dmin(0)));
 255                 }
 256             });
 257
 258         specialBoxProperties.put("vshrink", new SpecialBoxProperty() {
 259                 public Object get(Box b) { return b.vshrink ? Boolean.TRUE : Boolean.FALSE; }
 260                 public void put(Box b, Object value) {
 261                     boolean newshrink = stob(value);
 262                     if (b.vshrink == newshrink) return;
 263                     b.vshrink = newshrink;
 264                     if (b.vshrink) b.set(b.dmax, 1, Box.max(b.cmin(1), b.textdim(1) + 2 * b.pad(1), b.dmin(1)));
 265                 }
 266             });
 267
 268         specialBoxProperties.put("x", new SpecialBoxProperty() {
 269                 public Object get(Box b) {
 270                     if (b.surface == null) return new Integer(0);
 271                     if (b.invisible) return new Integer(0);
 272                     return new Integer(b.abs(0));
 273                 }
 274                 public void put(Box b, Object value) {
 275                     if (b.getParent() == null && b.surface != null) {
 276                         b.surface.setLocation(stoi(value), b.abs(1));
 277                         b.surface.centerSurfaceOnRender = false;
 278                     }
 279                     b.set(abs, 0, stosh(value));
 280                 }
 281             });
 282
 283         specialBoxProperties.put("y", new SpecialBoxProperty() {
 284                 public Object get(Box b) {
 285                     if (b.surface == null) return new Integer(0);
 286                     if (b.invisible) return new Integer(0);
 287                     return new Integer(b.abs(1));
 288                 }
 289                 public void put(Box b, Object value) {
 290                     if (b.getParent() == null && b.surface != null) {
 291                         b.surface.setLocation(b.abs(0), stoi(value));
 292                         b.surface.centerSurfaceOnRender = false;
 293                     }
 294                     b.set(abs, 1, stosh(value));
 295                 }
 296             });
 297
 298         specialBoxProperties.put("width", new SpecialBoxProperty() {
 299                 public Object get(Box b) { return new Integer(b.size(0)); }
 300                 public void put(Box b, Object value) {
 301                     if (b.sizetoimage) return;
 302                     if (b.getParent() == null && b.surface != null) {
 303                         b.set(size, 0, Box.max(Surface.scarPicture.getWidth(), stosh(value)));
 304                         b.mark_for_prerender();
 305                     } else {
 306                         b.set(dmax, 0, stosh(value));
 307                         b.set(dmin, 0, stosh(value));
 308                     }
 309                 } });
 310
 311         specialBoxProperties.put("height", new SpecialBoxProperty() {
 312                 public Object get(Box b) { return new Integer(b.size(1)); }
 313                 public void put(Box b, Object value) {
 314                     if (b.sizetoimage) return;
 315                     if (b.getParent() == null && b.surface != null) {
 316                         b.set(size, 1, Box.max(Surface.scarPicture.getHeight(), stosh(value)));
 317                         b.mark_for_prerender();
 318                     } else {
 319                         b.set(dmax, 1, stosh(value));
 320                         b.set(dmin, 1, stosh(value));
 321                     }
 322                 } });
 323
 324         specialBoxProperties.put("flex", new SpecialBoxProperty() {
 325                 public Object get(Box b) { return new Double(b.flex); }
 326                 public void put(Box b, Object value) {
 327                     if (value == null) return;
 328                     int newflex = stoi(value);
 329                     if (newflex == b.flex) return;
 330                     b.flex = newflex;
 331                     b.mark_for_prerender();
 332                 } });
 333
 334         specialBoxProperties.put("tile", new SpecialBoxProperty() {
 335                 public Object get(Box b) { return b.tile ? Boolean.TRUE : Boolean.FALSE; }
 336                 public void put(Box b, Object value) {
 337                     boolean newtile = stob(value);
 338                     if (newtile == b.tile) return;
 339                     b.tile = newtile;
 340                     b.dirty();
 341                 } });
 342
 343         specialBoxProperties.put("align", new SpecialBoxProperty() {
 344                 public Object get(Box b) {
 345                     if (b.align == -1) return "topleft";
 346                     else if (b.align == 1) return "bottomright";
 347                     else return "center";
 348                 }
 349                 public void put(Box b, Object value) {
 350                     String s = value == null ? "" : value.toString();
 351                     byte newalign = b.align;
 352                     if (s.equals("topleft")) newalign = -1;
 353                     else if (s.equals("bottomright")) newalign = 1;
 354                     else if (s.equals("center")) newalign = 0;
 355                     else if (Log.on) Log.log(this, "invalid value put to align property: " + value);
 356                     if (newalign == b.align) return;
 357                     b.align = newalign;
 358                     if (b.getParent() != null) b.getParent().mark_for_prerender();
 359                 } });
 360
 361         specialBoxProperties.put("invisible", new SpecialBoxProperty() {
 362                 public Object get(Box b) { return b.invisible ? Boolean.TRUE : Boolean.FALSE; }
 363                 public void put(Box b, Object value) {
 364                     boolean newinvisible = stob(value);
 365                     if (newinvisible == b.invisible) return;
 366                     b.invisible = newinvisible;
 367                     if (b.getParent() == null) {
 368                         if (b.surface != null) b.surface.setInvisible(newinvisible);
 369                     } else {
 370                         b.dirty();
 371                         b.getParent().mark_for_prerender();
 372                         b.getParent().sync_cmin_to_children();
 373                         b.getParent().dirty(b.pos(0), b.pos(1), b.size(0), b.size(1));
 374                         b.getParent().dirty(b.oldpos(0), b.oldpos(1), b.oldsize(0), b.oldsize(1));
 375                     }
 376                 }});
 377
 378         specialBoxProperties.put("absolute", new SpecialBoxProperty() {
 379                 public Object get(Box b) { return b.absolute ? Boolean.TRUE : Boolean.FALSE; }
 380                 public void put(Box b, Object value) {
 381                     boolean newabsolute = stob(value);
 382                     if (newabsolute == b.absolute) return;
 383                     b.absolute = newabsolute;
 384                     if (b.getParent() != null) {
 385                         b.getParent().mark_for_prerender();
 386                         b.getParent().sync_cmin_to_children();
 387                     }
 388                 } });
 389
 390         specialBoxProperties.put("image", new SpecialBoxProperty() {
 391                 public Object get(Box b) { return b.image == null ? null : Box.imageToNameMap.get(b.image); }
 392                 public void put(Box b, Object value) { b.setImage(value == null ? null : value.toString()); }
 393             });
 394
 395         specialBoxProperties.put("border", new SpecialBoxProperty() {
 396                 public Object get(Box b) { return b.border == null ? null : Box.imageToNameMap.get(b.border); }
 397                 public void put(Box b, Object value) { b.setBorder(value == null ? null : value.toString()); }
 398             });
 399
 400         specialBoxProperties.put("font", new SpecialBoxProperty() {
 401                 public Object get(Box b) { return b.font; }
 402                 public void put(Box b, Object value) {
 403                     if (value == null) value = Platform.getDefaultFont();
 404                     b.font = value.toString();
 405                     b.textupdate();
 406                     b.dirty();
 407                 } });
 408
 409         specialBoxProperties.put("globalx", new SpecialBoxProperty() {
 410                 public Object get(Box b) { return new Integer(b.getParent() == null || b.surface == null ? 0 : b.pos(0)); }
 411                 public void put(Box b, Object value) {
 412                     if (b.surface == null || b.getParent() == null) return;
 413                     b.put("x", null, new Integer(stoi(value) - stoi(get(b.getParent()))));
 414                 }
 415             });
 416
 417         specialBoxProperties.put("globaly", new SpecialBoxProperty() {
 418                 public Object get(Box b) { return new Integer(b.getParent() == null || b.surface == null ? 0 : b.pos(1)); }
 419                 public void put(Box b, Object value) {
 420                     if (b.surface == null || b.getParent() == null) return;
 421                     b.put("y", null, new Integer(stoi(value) - stoi(get(b.getParent()))));
 422                 }
 423             });
 424
 425         specialBoxProperties.put("cursor", new SpecialBoxProperty() {
 426                 public Object get(Box b) { return b.cursor; }
 427                 public void put(Box b, Object value) {
 428                     b.cursor = (String)value;
 429                     if (b.surface == null) return;
 430
 431                     // see if we need to update the surface cursor
 432                     String tempcursor = b.surface.cursor;
 433                     b.Move(b.surface.mousex, b.surface.mousey, b.surface.mousex, b.surface.mousey);
 434                     if (b.surface.cursor != tempcursor) b.surface.syncCursor();
 435                 }
 436             });
 437
 438         specialBoxProperties.put("mousex", new SpecialBoxProperty() {
 439                 public Object get(Box b) { return new Integer(b.surface == null ? 0 : b.surface.mousex - b.pos(0)); }
 440             });
 441
 442         specialBoxProperties.put("mousey", new SpecialBoxProperty() {
 443                 public Object get(Box b) { return new Integer(b.surface == null ? 0 : b.surface.mousey - b.pos(1)); }
 444             });
 445
 446         specialBoxProperties.put("xwt", new SpecialBoxProperty() {
 447                 public Object get(Box b) { return XWT.singleton; }
 448             });
 449
 450         specialBoxProperties.put("mouseinside", new SpecialBoxProperty() {
 451                 public Object get(Box b) { return b.mouseinside ? Boolean.TRUE : Boolean.FALSE; }
 452             });
 453
 454         specialBoxProperties.put("numchildren", new SpecialBoxProperty() {
 455                 public Object get(Box b) {
 456                     if (b.redirect == null) return new Integer(0);
 457                     if (b.redirect != b) return get(b.redirect);
 458                     return new Integer(b.numChildren());
 459                 } });
 460
 461         SpecialBoxProperty mouseEventHandler = new SpecialBoxProperty() {
 462                 public void put(String name, Box b, Object value) {
 463                     if (b.surface == null) return;
 464                     if (b.getParent() == null) {
 465                         if (b.surface.boxContainingMouse.getParent() != null)
 466                             b.surface.boxContainingMouse.put(name, b.surface.boxContainingMouse, value);
 467                     } else {
 468                         // check siblings
 469                         for(Box c = b.prevSibling(); c != null; c = c.prevSibling())
 470                             if (c.inside(c.surface.mousex, c.surface.mousey)) {
 471                                 c.put(name, c, value);
 472                                 return;
 473                             }
 474                         // move up a level
 475                         if (b.getParent() != null && b.getParent().getParent() != null)
 476                             b.getParent().put(name, b.getParent(), value);
 477                     }
 478                 }};
 479
 480         specialBoxProperties.put("Press1", mouseEventHandler);
 481         specialBoxProperties.put("Press2", mouseEventHandler);
 482         specialBoxProperties.put("Press3", mouseEventHandler);
 483         specialBoxProperties.put("Release1", mouseEventHandler);
 484         specialBoxProperties.put("Release2", mouseEventHandler);
 485         specialBoxProperties.put("Release3", mouseEventHandler);
 486         specialBoxProperties.put("Click1", mouseEventHandler);
 487         specialBoxProperties.put("Click2", mouseEventHandler);
 488         specialBoxProperties.put("Click3", mouseEventHandler);
 489         specialBoxProperties.put("DoubleClick1", mouseEventHandler);
 490         specialBoxProperties.put("DoubleClick2", mouseEventHandler);
 491         specialBoxProperties.put("DoubleClick3", mouseEventHandler);
 492
 493         specialBoxProperties.put("root", new SpecialBoxProperty() {
 494                 public Object get(Box b) {
 495                     if (b.surface == null) return null;
 496                     else if (b.getRoot() == null) return null;
 497                     else return b.getRoot().getRootProxy();
 498                 } });
 499
 500         specialBoxProperties.put("Minimized", new SpecialBoxProperty() {
 501                 public Object get(Box b) {
 502                     if (b.getParent() == null && b.surface != null) return b.surface.minimized ? Boolean.TRUE : Boolean.FALSE;
 503                     else return null;
 504                 }
 505                 public void put(Box b, Object value) {
 506                     if (b.surface == null) return;
 507                     boolean val = stob(value);
 508                     if (b.getParent() == null && b.surface.minimized != val) b.surface.setMinimized(val);
 509                 }
 510             });
 511
 512         specialBoxProperties.put("Maximized", new SpecialBoxProperty() {
 513                 public Object get(Box b) {
 514                     if (b.getParent() == null && b.surface != null) return b.surface.maximized ? Boolean.TRUE : Boolean.FALSE;
 515                     else return null;
 516                 }
 517                 public void put(Box b, Object value) {
 518                     if (b.surface == null) return;
 519                     boolean val = stob(value);
 520                     if (b.getParent() == null && b.surface.maximized != val) b.surface.setMaximized(val);
 521                 }
 522             });
 523
 524         specialBoxProperties.put("toback", new SpecialBoxProperty() {
 525                 public void put(Box b, Object value) {
 526                     if (b.getParent() == null && stob(value) && b.surface != null) b.surface.toBack();
 527                 }
 528             });
 529
 530         specialBoxProperties.put("tofront", new SpecialBoxProperty() {
 531                 public void put(Box b, Object value) {
 532                     if (b.getParent() == null && stob(value) && b.surface != null) b.surface.toFront();
 533                 }
 534             });
 535
 536         specialBoxProperties.put("hscar", new SpecialBoxProperty() {
 537                 public void put(Box b, Object value) {
 538                     if (b.getParent() == null && b.surface != null) {
 539                         b.surface.hscar = stoi(value);
 540                         b.surface.dirty(0, 0, b.surface.width, b.surface.height);
 541                         b.surface.Refresh();
 542                     }
 543                 }
 544             });
 545
 546         specialBoxProperties.put("vscar", new SpecialBoxProperty() {
 547                 public void put(Box b, Object value) {
 548                     if (b.getParent() == null && b.surface != null) {
 549                         b.surface.vscar = stoi(value);
 550                         b.surface.dirty(0, 0, b.surface.width, b.surface.height);
 551                         b.surface.Refresh();
 552                     }
 553                 }
 554             });
 555
 556         specialBoxProperties.put("Close", new SpecialBoxProperty() {
 557                 public void put(Box b, Object value) {
 558                     if (b.getParent() == null && b.surface != null) b.surface.dispose();
 559                 }
 560             });
 561
 562         // these are all do-nothings; just to prevent space from getting taken up in the params Hash.
 563         specialBoxProperties.put("KeyPressed", new SpecialBoxProperty());
 564         specialBoxProperties.put("KeyReleased", new SpecialBoxProperty());
 565         specialBoxProperties.put("PosChange", new SpecialBoxProperty());
 566         specialBoxProperties.put("SizeChange", new SpecialBoxProperty());
 567
 568         specialBoxProperties.put("hpad", new SpecialBoxProperty() {
 569                 public Object get(Box b) {
 570                     if (b.redirect == null) return new Integer(0);
 571                     if (b.redirect != b) return get(b.redirect);
 572                     return new Integer(b.pad(0));
 573                 }
 574                 public void put(Box b, Object value) {
 575                     if (b.redirect == null) return;
 576                     if (b.redirect != b) { put(b.redirect, value); return; }
 577                     short newval = stosh(value);
 578                     if (newval == b.pad(0)) return;
 579                     b.set(pad, 0, newval);
 580                 }
 581             });
 582
 583         specialBoxProperties.put("vpad", new SpecialBoxProperty() {
 584                 public Object get(Box b) {
 585                     if (b.redirect == null) return new Integer(0);
 586                     if (b.redirect != b) return get(b.redirect);
 587                     return new Integer(b.pad(1));
 588                 }
 589                 public void put(Box b, Object value) {
 590                     if (b.redirect == null) return;
 591                     if (b.redirect != b) { put(b.redirect, value); return; }
 592                     short newval = stosh(value);
 593                     if (newval == b.pad(1)) return;
 594                     b.set(pad, 1, newval);
 595                 }
 596             });
 597
 598         specialBoxProperties.put("indexof", new SpecialBoxProperty() {
 599                 public Object get(Box b) { return b.indexof(); }
 600             });
 601
 602         specialBoxProperties.put("minwidth", new SpecialBoxProperty() {
 603                 public Object get(Box b) { return new Integer(b.dmin(0)); }
 604                 public void put(Box b, Object value) {
 605                     if (b.sizetoimage) return;
 606                     b.set(dmin, 0, stosh(value));
 607                 }
 608             });
 609
 610         specialBoxProperties.put("maxwidth", new SpecialBoxProperty() {
 611                 public Object get(Box b) { return new Integer(b.dmax(0)); }
 612                 public void put(Box b, Object value) {
 613                     if (b.sizetoimage) return;
 614                     b.set(dmax, 0, stosh(value));
 615                 }
 616             });
 617
 618         specialBoxProperties.put("minheight", new SpecialBoxProperty() {
 619                 public Object get(Box b) { return new Integer(b.dmin(1)); }
 620                 public void put(Box b, Object value) {
 621                     if (b.sizetoimage) return;
 622                     b.set(dmin, 1, stosh(value));
 623                 }
 624             });
 625
 626         specialBoxProperties.put("maxheight", new SpecialBoxProperty() {
 627                 public Object get(Box b) { return new Integer(b.dmax(1)); }
 628                 public void put(Box b, Object value) {
 629                     if (b.sizetoimage) return;
 630                     b.set(dmax, 1, stosh(value));
 631                 }
 632             });
 633     }
 634
 635
 636     /** helper that converts a String to a boolean according to JavaScript coercion rules */
 637     public static boolean stob(Object o) {
 638         if (o == null) return false;
 639         return Boolean.TRUE.equals(o) || "true".equals(o);
 640     }
 641
 642     /** helper that converts a String to an int according to JavaScript coercion rules */
 643     public static int stoi(Object o) {
 644         if (o == null) return 0;
 645         if (o instanceof Integer) return ((Integer)o).intValue();
 646
 647         String s;
 648         if (!(o instanceof String)) s = o.toString();
 649         else s = (String)o;
 650
 651         try { return Integer.parseInt(s.indexOf('.') == -1 ? s : s.substring(0, s.indexOf('.'))); }
 652         catch (NumberFormatException e) { return 0; }
 653     }
 654
 655     /** helper that converts a String to a short according to JavaScript coercion rules */
 656     public static short stosh(Object o) {
 657         if (o == null) return 0;
 658         if (o instanceof Number) return ((Number)o).shortValue();
 659
 660         String s;
 661         if (!(o instanceof String)) s = o.toString();
 662         else s = (String)o;
 663
 664         try { return Short.parseShort(s.indexOf('.') == -1 ? s : s.substring(0, s.indexOf('.'))); }
 665         catch (NumberFormatException e) { return 0; }
 666     }
 667
 668 }
 669
 670
 671