src/org/xwt/SpecialBoxProperty.java

   1 // Copyright 2002 Adam Megacz, see the COPYING file for licensing [GPL]
   2 package org.xwt;
   3
   4 import java.util.*;
   5 import java.net.*;
   6 import java.text.*;
   7 import org.xwt.js.*;
   8 import org.xwt.util.*;
   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                         try {
  85                             newcolor = 0xFF000000 |
  86                                 (Integer.parseInt(s.substring(1, 3), 16) << 16) |
  87                                 (Integer.parseInt(s.substring(3, 5), 16) << 8) |
  88                                 Integer.parseInt(s.substring(5, 7), 16);
  89                         } catch (NumberFormatException e) {
  90                             Log.log(this, "invalid color " + s);
  91                             return;
  92                         }
  93                     else if (s.equals("black")) newcolor = black;
  94                     else if (s.equals("blue")) newcolor = blue;
  95                     else if (s.equals("green")) newcolor = green;
  96                     else if (s.equals("cyan")) newcolor = cyan;
  97                     else if (s.equals("red")) newcolor = red;
  98                     else if (s.equals("magenta")) newcolor = magenta;
  99                     else if (s.equals("brown")) newcolor = brown;
 100                     else if (s.equals("lightGray")) newcolor = lightGray;
 101                     else if (s.equals("darkGray")) newcolor = darkGray;
 102                     else if (s.equals("brightBlue")) newcolor = brightBlue;
 103                     else if (s.equals("brightGreen")) newcolor = brightGreen;
 104                     else if (s.equals("brightCyan")) newcolor = brightCyan;
 105                     else if (s.equals("brightRed")) newcolor = brightRed;
 106                     else if (s.equals("pink")) newcolor = pink;
 107                     else if (s.equals("yellow")) newcolor = yellow;
 108                     else if (s.equals("white")) newcolor = white;
 109                     else if (Log.on) Log.logJS(this, "invalid color \"" + s + "\"");
 110                     if (newcolor == b.color) return;
 111                     b.color = newcolor;
 112                     b.dirty();
 113                 } });
 114
 115
 116         specialBoxProperties.put("textcolor", new SpecialBoxProperty() {
 117                 public Object get(Box b) {
 118                     if ((b.textcolor & 0xFF000000) == 0) return null;
 119                     String red = Integer.toHexString((b.textcolor & 0x00FF0000) >> 16);
 120                     String green = Integer.toHexString((b.textcolor & 0x0000FF00) >> 8);
 121                     String blue = Integer.toHexString(b.textcolor & 0x000000FF);
 122                     if (red.length() < 2) red = "0" + red;
 123                     if (blue.length() < 2) blue = "0" + blue;
 124                     if (green.length() < 2) green = "0" + green;
 125                     return "#" + red + green + blue;
 126                 }
 127                 public void put(Box b, Object value) {
 128                     int newtextcolor = b.color;
 129                     if (value == null) return;
 130                     String s = value.toString();
 131                     if (s.length() > 0 && s.charAt(0) == '#')
 132                         newtextcolor = 0xFF000000 |
 133                             (Integer.parseInt(s.substring(1, 3), 16) << 16) |
 134                             (Integer.parseInt(s.substring(3, 5), 16) << 8) |
 135                             Integer.parseInt(s.substring(5, 7), 16);
 136                     else if (s.equals("black")) newtextcolor = black;
 137                     else if (s.equals("blue")) newtextcolor = blue;
 138                     else if (s.equals("green")) newtextcolor = green;
 139                     else if (s.equals("cyan")) newtextcolor = cyan;
 140                     else if (s.equals("red")) newtextcolor = red;
 141                     else if (s.equals("magenta")) newtextcolor = magenta;
 142                     else if (s.equals("brown")) newtextcolor = brown;
 143                     else if (s.equals("lightGray")) newtextcolor = lightGray;
 144                     else if (s.equals("darkGray")) newtextcolor = darkGray;
 145                     else if (s.equals("brightBlue")) newtextcolor = brightBlue;
 146                     else if (s.equals("brightGreen")) newtextcolor = brightGreen;
 147                     else if (s.equals("brightCyan")) newtextcolor = brightCyan;
 148                     else if (s.equals("brightRed")) newtextcolor = brightRed;
 149                     else if (s.equals("pink")) newtextcolor = pink;
 150                     else if (s.equals("yellow")) newtextcolor = yellow;
 151                     else if (s.equals("white")) newtextcolor = white;
 152                     else if (Log.on) Log.logJS(this, "invalid color \"" + s + "\"");
 153                     if (newtextcolor == b.textcolor) return;
 154                     b.textcolor = newtextcolor;
 155                     b.dirty();
 156                 } });
 157
 158         specialBoxProperties.put("text", new SpecialBoxProperty() {
 159                 public Object get(Box b) { return b.text; }
 160                 public void put(Box b, Object value) {
 161                     String t = value == null ? "null" : value.toString();
 162                     if (t.equals(b.text)) return;
 163
 164                     for(int i=0; i<t.length(); i++)
 165                         if (Character.isISOControl(t.charAt(i))) {
 166                             if (Log.on) Log.log(this,
 167                                                 "ISO Control characters are not permitted in box text strings; offending character is ASCII " +
 168                                                ((int)t.charAt(i)));
 169                             return;
 170                         }
 171
 172                     // FEATURE: try removing the following line; it appears to be redundant
 173                     b.dirty();
 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") || value.equals("frame")) {
 184                         if (b.redirect != b && Log.on)
 185                             Log.log(this, "WARNING: you have created a surface whose root box's redirect is not itself " +
 186                                     "-- this isn't usually a good idea");
 187                         Platform.createSurface(b, value.equals("frame"), true);
 188                     } else if (Log.on) Log.log(this, "put invalid value to 'thisbox' property: " + value);
 189                 }
 190             });
 191
 192         specialBoxProperties.put("orient", new SpecialBoxProperty() {
 193                 public Object get(Box b) {
 194                     if (b.redirect == null) return "horizontal";
 195                     else if (b.redirect != b) return get(b.redirect);
 196                     else if (b.o == 1) return "vertical";
 197                     else return "horizontal";
 198                 }
 199                 public void put(Box b, Object value) {
 200                     if (value == null) return;
 201                     if (b.redirect == null) return;
 202                     if (b.redirect != b) {
 203                         put(b.redirect, value);
 204                         return;
 205                     }
 206                     if (value.equals("vertical")) {
 207                         if (b.o == 1) return;
 208                         b.o = 1;
 209                         b.xo = 0;
 210                     } else if (value.equals("horizontal")) {
 211                         if (b.o == 0) return;
 212                         b.o = 0;
 213                         b.xo = 1;
 214                     } else if (Log.on)
 215                         Log.log(this, "invalid value put to orient property: " + value);
 216                     b.mark_for_prerender();
 217                     b.sync_cmin_to_children();
 218                 } });
 219
 220         specialBoxProperties.put("static", new SpecialBoxProperty() {
 221                 public Object get(Box b) {
 222                     String cfsn = JS.Thread.fromJavaThread(Thread.currentThread()).getCurrentCompiledFunction().getSourceName();
 223                     for(int i=0; i<cfsn.length() - 1; i++)
 224                         if (cfsn.charAt(i) == '.' && (cfsn.charAt(i+1) == '_' || Character.isDigit(cfsn.charAt(i+1)))) {
 225                             cfsn = cfsn.substring(0, i);
 226                             break;
 227                         }
 228                     return Static.getStatic(cfsn);
 229                 }
 230                 public void put(Box b, Object value) { }
 231             });
 232
 233         specialBoxProperties.put("sizetoimage", new SpecialBoxProperty() {
 234                 public Object get(Box b) { return b.sizetoimage ? Boolean.TRUE : Boolean.FALSE; }
 235                 public void put(Box b, Object value) {
 236                     if (stob(value)) {
 237                         if (b.sizetoimage) return;
 238                         b.sizetoimage = true;
 239                         b.syncSizeToImage();
 240                     } else {
 241                         b.sizetoimage = false;
 242                     }
 243                 } });
 244
 245         specialBoxProperties.put("fixedaspect", new SpecialBoxProperty() {
 246                 public Object get(Box b) { return b.sizetoimage ? Boolean.TRUE : Boolean.FALSE; }
 247                 public void put(Box b, Object value) {
 248                     boolean newval = stob(value);
 249                     if (newval == b.fixedaspect) return;
 250                     b.fixedaspect = newval;
 251                     b.dirty();
 252                 } });
 253
 254         specialBoxProperties.put("shrink", new SpecialBoxProperty() {
 255                 public Object get(Box b) { return (b.vshrink && b.hshrink) ? Boolean.TRUE : Boolean.FALSE; }
 256                 public void put(Box b, Object value) {
 257                     boolean newshrink = stob(value);
 258                     if (b.hshrink == newshrink && b.vshrink == newshrink) return;
 259                     b.hshrink = b.vshrink = newshrink;
 260                     b.mark_for_prerender();
 261                 } });
 262
 263         specialBoxProperties.put("hshrink", new SpecialBoxProperty() {
 264                 public Object get(Box b) { return new Boolean(b.hshrink); }
 265                 public void put(Box b, Object value) {
 266                     boolean newshrink = stob(value);
 267                     if (b.hshrink == newshrink) return;
 268                     b.hshrink = newshrink;
 269                     b.mark_for_prerender();
 270                 }
 271             });
 272
 273         specialBoxProperties.put("vshrink", new SpecialBoxProperty() {
 274                 public Object get(Box b) { return b.vshrink ? Boolean.TRUE : Boolean.FALSE; }
 275                 public void put(Box b, Object value) {
 276                     boolean newshrink = stob(value);
 277                     if (b.vshrink == newshrink) return;
 278                     b.vshrink = newshrink;
 279                     b.mark_for_prerender();
 280                 }
 281             });
 282
 283         specialBoxProperties.put("x", 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(0));
 288                 }
 289                 public void put(Box b, Object value) {
 290                     if (b.getParent() == null && b.surface != null) {
 291                         b.surface.setLocation(stoi(value), b.abs(1));
 292                         b.surface.centerSurfaceOnRender = false;
 293                     }
 294                     b.set(abs, 0, stoi(value));
 295                 }
 296             });
 297
 298         specialBoxProperties.put("y", new SpecialBoxProperty() {
 299                 public Object get(Box b) {
 300                     if (b.surface == null) return new Integer(0);
 301                     if (b.invisible) return new Integer(0);
 302                     return new Integer(b.abs(1));
 303                 }
 304                 public void put(Box b, Object value) {
 305                     if (b.getParent() == null && b.surface != null) {
 306                         b.surface.setLocation(b.abs(0), stoi(value));
 307                         b.surface.centerSurfaceOnRender = false;
 308                     }
 309                     b.set(abs, 1, stoi(value));
 310                 }
 311             });
 312
 313         specialBoxProperties.put("width", new SpecialBoxProperty() {
 314                 public Object get(Box b) { return new Integer(b.size(0)); }
 315                 public void put(Box b, Object value) {
 316                     if (b.sizetoimage) return;
 317                     if (b.getParent() == null && b.surface != null) {
 318                         b.set(size, 0, Box.max(Surface.scarPicture.getWidth(), stoi(value)));
 319                         b.mark_for_prerender();
 320                     } else {
 321                         b.set(dmax, 0, stoi(value));
 322                         b.set(dmin, 0, stoi(value));
 323                     }
 324                 } });
 325
 326         specialBoxProperties.put("height", new SpecialBoxProperty() {
 327                 public Object get(Box b) { return new Integer(b.size(1)); }
 328                 public void put(Box b, Object value) {
 329                     if (b.sizetoimage) return;
 330                     if (b.getParent() == null && b.surface != null) {
 331                         b.set(size, 1, Box.max(Surface.scarPicture.getHeight(), stoi(value)));
 332                         b.mark_for_prerender();
 333                     } else {
 334                         b.set(dmax, 1, stoi(value));
 335                         b.set(dmin, 1, stoi(value));
 336                     }
 337                 } });
 338
 339         specialBoxProperties.put("flex", new SpecialBoxProperty() {
 340                 public Object get(Box b) { return new Double(b.flex); }
 341                 public void put(Box b, Object value) {
 342                     if (value == null) return;
 343                     int newflex = stoi(value);
 344                     if (newflex == b.flex) return;
 345                     b.flex = newflex;
 346                     b.mark_for_prerender();
 347                 } });
 348
 349         specialBoxProperties.put("tile", new SpecialBoxProperty() {
 350                 public Object get(Box b) { return b.tile ? Boolean.TRUE : Boolean.FALSE; }
 351                 public void put(Box b, Object value) {
 352                     boolean newtile = stob(value);
 353                     if (newtile == b.tile) return;
 354                     b.tile = newtile;
 355                     b.dirty();
 356                 } });
 357
 358         specialBoxProperties.put("align", new SpecialBoxProperty() {
 359                 public Object get(Box b) {
 360                     if (b.align == -1) return "topleft";
 361                     else if (b.align == 1) return "bottomright";
 362                     else return "center";
 363                 }
 364                 public void put(Box b, Object value) {
 365                     String s = value == null ? "" : value.toString();
 366                     byte newalign = b.align;
 367                     if (s.equals("topleft")) newalign = -1;
 368                     else if (s.equals("bottomright")) newalign = 1;
 369                     else if (s.equals("center")) newalign = 0;
 370                     else if (Log.on) Log.log(this, "invalid value put to align property: " + value);
 371                     if (newalign == b.align) return;
 372                     b.align = newalign;
 373                     if (b.getParent() != null) b.getParent().mark_for_prerender();
 374                 } });
 375
 376         specialBoxProperties.put("invisible", new SpecialBoxProperty() {
 377                 public Object get(Box b) {
 378                     for (Box cur = b; cur != null; cur = cur.getParent()) { if (cur.invisible) return Boolean.TRUE; }
 379                     return Boolean.FALSE;
 380                 }
 381                 public void put(Box b, Object value) {
 382                     boolean newinvisible = stob(value);
 383                     if (newinvisible == b.invisible) return;
 384                     b.invisible = newinvisible;
 385                     if (b.getParent() == null) {
 386                         if (b.surface != null) b.surface.setInvisible(newinvisible);
 387                     } else {
 388                         b.dirty();
 389                         b.getParent().mark_for_prerender();
 390                         b.getParent().sync_cmin_to_children();
 391                         b.getParent().dirty(b.pos(0), b.pos(1), b.size(0), b.size(1));
 392                         b.getParent().dirty(b.oldpos(0), b.oldpos(1), b.oldsize(0), b.oldsize(1));
 393                     }
 394                 }});
 395
 396         specialBoxProperties.put("absolute", new SpecialBoxProperty() {
 397                 public Object get(Box b) { return b.absolute ? Boolean.TRUE : Boolean.FALSE; }
 398                 public void put(Box b, Object value) {
 399                     boolean newabsolute = stob(value);
 400                     if (newabsolute == b.absolute) return;
 401                     b.absolute = newabsolute;
 402                     if (b.getParent() != null) {
 403                         b.getParent().mark_for_prerender();
 404                         b.getParent().sync_cmin_to_children();
 405                     }
 406                 } });
 407
 408         specialBoxProperties.put("image", new SpecialBoxProperty() {
 409                 public Object get(Box b) { return b.image == null ? null : Box.imageToNameMap.get(b.image); }
 410                 public void put(Box b, Object value) { b.setImage(value == null ? null : value.toString()); }
 411             });
 412
 413         specialBoxProperties.put("border", new SpecialBoxProperty() {
 414                 public Object get(Box b) { return b.border == null ? null : Box.imageToNameMap.get(b.border); }
 415                 public void put(Box b, Object value) { b.setBorder(value == null ? null : value.toString()); }
 416             });
 417
 418         specialBoxProperties.put("font", new SpecialBoxProperty() {
 419                 public Object get(Box b) { return b.font; }
 420                 public void put(Box b, Object value) {
 421                     b.font = value == null ? null : value.toString();
 422                     b.fontChanged();
 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", 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", 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                     for(Box c = b.prevSibling(); c != null; c = c.prevSibling()) {
 482                         Box siblingChild = c.whoIs(c.surface.mousex, c.surface.mousey);
 483                         if (siblingChild != null) {
 484                             siblingChild.put(name, value);
 485                             return;
 486                         }
 487                     }
 488                     if (b.getParent() != null)
 489                         b.getParent().put(name, value);
 490                 }};
 491
 492         specialBoxProperties.put("Press1", mouseEventHandler);
 493         specialBoxProperties.put("Press2", mouseEventHandler);
 494         specialBoxProperties.put("Press3", mouseEventHandler);
 495         specialBoxProperties.put("Release1", mouseEventHandler);
 496         specialBoxProperties.put("Release2", mouseEventHandler);
 497         specialBoxProperties.put("Release3", mouseEventHandler);
 498         specialBoxProperties.put("Click1", mouseEventHandler);
 499         specialBoxProperties.put("Click2", mouseEventHandler);
 500         specialBoxProperties.put("Click3", mouseEventHandler);
 501         specialBoxProperties.put("DoubleClick1", mouseEventHandler);
 502         specialBoxProperties.put("DoubleClick2", mouseEventHandler);
 503         specialBoxProperties.put("DoubleClick3", mouseEventHandler);
 504
 505         specialBoxProperties.put("root", new SpecialBoxProperty() {
 506                 public Object get(Box b) {
 507                     if (b.surface == null) return null;
 508                     else if (b.getRoot() == null) return null;
 509                     else if (b.getParent() == null) return b;
 510                     else return b.getRoot().getRootProxy();
 511                 } });
 512
 513         specialBoxProperties.put("Minimized", new SpecialBoxProperty() {
 514                 public Object get(Box b) {
 515                     if (b.getParent() == null && b.surface != null) return b.surface.minimized ? Boolean.TRUE : Boolean.FALSE;
 516                     else return null;
 517                 }
 518                 public void put(Box b, Object value) {
 519                     if (b.surface == null) return;
 520                     boolean val = stob(value);
 521                     if (b.getParent() == null && b.surface.minimized != val) b.surface.setMinimized(val);
 522                 }
 523             });
 524
 525         specialBoxProperties.put("Maximized", new SpecialBoxProperty() {
 526                 public Object get(Box b) {
 527                     if (b.getParent() == null && b.surface != null) return b.surface.maximized ? Boolean.TRUE : Boolean.FALSE;
 528                     else return null;
 529                 }
 530                 public void put(Box b, Object value) {
 531                     if (b.surface == null) return;
 532                     boolean val = stob(value);
 533                     if (b.getParent() == null && b.surface.maximized != val) b.surface.setMaximized(val);
 534                 }
 535             });
 536
 537         specialBoxProperties.put("toback", new SpecialBoxProperty() {
 538                 public void put(Box b, Object value) {
 539                     if (b.getParent() == null && stob(value) && b.surface != null) b.surface.toBack();
 540                 }
 541             });
 542
 543         specialBoxProperties.put("tofront", new SpecialBoxProperty() {
 544                 public void put(Box b, Object value) {
 545                     if (b.getParent() == null && stob(value) && b.surface != null) b.surface.toFront();
 546                 }
 547             });
 548
 549         specialBoxProperties.put("hscar", new SpecialBoxProperty() {
 550                 public void put(Box b, Object value) {
 551                     if (b.getParent() == null && b.surface != null) {
 552                         b.surface.hscar = stoi(value);
 553                         b.surface.dirty(0, 0, b.surface.width, b.surface.height);
 554                         b.surface.Refresh();
 555                     }
 556                 }
 557             });
 558
 559         specialBoxProperties.put("vscar", new SpecialBoxProperty() {
 560                 public void put(Box b, Object value) {
 561                     if (b.getParent() == null && b.surface != null) {
 562                         b.surface.vscar = stoi(value);
 563                         b.surface.dirty(0, 0, b.surface.width, b.surface.height);
 564                         b.surface.Refresh();
 565                     }
 566                 }
 567             });
 568
 569         specialBoxProperties.put("Close", new SpecialBoxProperty() {
 570                 public void put(Box b, Object value) {
 571                     if (b.getParent() == null && b.surface != null) b.surface.dispose(true);
 572                 }
 573             });
 574
 575         // these are all do-nothings; just to prevent space from getting taken up in the params Hash.
 576         specialBoxProperties.put("KeyPressed", new SpecialBoxProperty());
 577         specialBoxProperties.put("KeyReleased", new SpecialBoxProperty());
 578         specialBoxProperties.put("PosChange", new SpecialBoxProperty());
 579         specialBoxProperties.put("SizeChange", new SpecialBoxProperty());
 580
 581         specialBoxProperties.put("hpad", new SpecialBoxProperty() {
 582                 public Object get(Box b) {
 583                     if (b.redirect == null) return new Integer(0);
 584                     if (b.redirect != b) return get(b.redirect);
 585                     return new Integer(b.pad(0));
 586                 }
 587                 public void put(Box b, Object value) {
 588                     if (b.redirect == null) return;
 589                     if (b.redirect != b) { put(b.redirect, value); return; }
 590                     int newval = stoi(value);
 591                     if (newval == b.pad(0)) return;
 592                     b.set(pad, 0, newval);
 593                 }
 594             });
 595
 596         specialBoxProperties.put("vpad", new SpecialBoxProperty() {
 597                 public Object get(Box b) {
 598                     if (b.redirect == null) return new Integer(0);
 599                     if (b.redirect != b) return get(b.redirect);
 600                     return new Integer(b.pad(1));
 601                 }
 602                 public void put(Box b, Object value) {
 603                     if (b.redirect == null) return;
 604                     if (b.redirect != b) { put(b.redirect, value); return; }
 605                     int newval = stoi(value);
 606                     if (newval == b.pad(1)) return;
 607                     b.set(pad, 1, newval);
 608                 }
 609             });
 610
 611         specialBoxProperties.put("indexof", new SpecialBoxProperty() {
 612                 public Object get(Box b) { return b.indexof(); }
 613             });
 614
 615         specialBoxProperties.put("minwidth", new SpecialBoxProperty() {
 616                 public Object get(Box b) { return new Integer(b.dmin(0)); }
 617                 public void put(Box b, Object value) {
 618                     if (b.sizetoimage) return;
 619                     b.set(dmin, 0, stoi(value));
 620                 }
 621             });
 622
 623         specialBoxProperties.put("maxwidth", new SpecialBoxProperty() {
 624                 public Object get(Box b) { return new Integer(b.dmax(0)); }
 625                 public void put(Box b, Object value) {
 626                     if (b.sizetoimage) return;
 627                     b.set(dmax, 0, stoi(value));
 628                 }
 629             });
 630
 631         specialBoxProperties.put("minheight", new SpecialBoxProperty() {
 632                 public Object get(Box b) { return new Integer(b.dmin(1)); }
 633                 public void put(Box b, Object value) {
 634                     if (b.sizetoimage) return;
 635                     b.set(dmin, 1, stoi(value));
 636                 }
 637             });
 638
 639         specialBoxProperties.put("maxheight", new SpecialBoxProperty() {
 640                 public Object get(Box b) { return new Integer(b.dmax(1)); }
 641                 public void put(Box b, Object value) {
 642                     if (b.sizetoimage) return;
 643                     b.set(dmax, 1, stoi(value));
 644                 }
 645             });
 646
 647         specialBoxProperties.put("redirect", new SpecialBoxProperty() {
 648                 public void put(Box b, Object value) { }
 649                 public Object get(Box b) {
 650                     if (b.redirect == null) return null;
 651                     if (b.redirect == b) return Boolean.TRUE;
 652                     return get(b.redirect);
 653                 }
 654             });
 655
 656         specialBoxProperties.put("apply", new SpecialBoxProperty() {
 657                 public void put(Box b, Object value) { }
 658                 public Object get(final Box b) { return new JS.Callable() {
 659                         public Object call(JS.Array args) throws JS.Exn {
 660                             if (args.elementAt(0) instanceof String) {
 661                                 String templatename = (String)args.elementAt(0);
 662                                 Template t = Template.getTemplate(templatename, null);
 663                                 if (t == null) {
 664                                     if (Log.on) Log.logJS(this, "template " + templatename + " not found");
 665                                 } else {
 666                                     if (ThreadMessage.suspendThread()) try {
 667                                         JS.Callable callback = args.length() < 2 ? null : (Callable)args.elementAt(1);
 668                                         t.apply(b, null, null, callback, 0, t.numUnits());
 669                                     } finally {
 670                                         ThreadMessage.resumeThread();
 671                                     }
 672                                 }
 673
 674                             } else if (args.elementAt(0) instanceof JS && !(args.elementAt(0) instanceof Box)) {
 675                                 JS s = (JS)args.elementAt(0);
 676                                 Object[] keys = s.keys();
 677                                 for(int j=0; j<keys.length; j++) b.put(keys[j].toString(), s.get(keys[j]));
 678                             }
 679
 680                             return b;
 681                         } }; } });
 682
 683         specialBoxProperties.put("id", new SpecialBoxProperty() {
 684                 public void put(Box b, Object value) { }
 685                 public Object get(Box b) { return b.id; }
 686             });
 687     }
 688
 689
 690     /** helper that converts a String to a boolean according to JavaScript coercion rules */
 691     public static boolean stob(Object o) {
 692         if (o == null) return false;
 693         return Boolean.TRUE.equals(o) || "true".equals(o);
 694     }
 695
 696     /** helper that converts a String to an int according to JavaScript coercion rules */
 697     public static int stoi(Object o) {
 698         if (o == null) return 0;
 699         if (o instanceof Integer) return ((Integer)o).intValue();
 700
 701         String s;
 702         if (!(o instanceof String)) s = o.toString();
 703         else s = (String)o;
 704
 705         try { return Integer.parseInt(s.indexOf('.') == -1 ? s : s.substring(0, s.indexOf('.'))); }
 706         catch (NumberFormatException e) { return 0; }
 707     }
 708
 709 }
 710
 711
 712