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         specialBoxProperties.put("color", new SpecialBoxProperty() {
  68                 public Object get(Box b) {
  69                     if ((b.color & 0xFF000000) == 0) return null;
  70                     String red = Integer.toHexString((b.color & 0x00FF0000) >> 16);
  71                     String green = Integer.toHexString((b.color & 0x0000FF00) >> 8);
  72                     String blue = Integer.toHexString(b.color & 0x000000FF);
  73                     if (red.length() < 2) red = "0" + red;
  74                     if (blue.length() < 2) blue = "0" + blue;
  75                     if (green.length() < 2) green = "0" + green;
  76                     return "#" + red + green + blue;
  77                 }
  78                 public void put(Box b, Object value) {
  79                     int newcolor = b.color;
  80                     String s = value == null ? null : value.toString();
  81                     if (value == null) newcolor = 0x00000000;
  82                     else if (s.length() > 0 && s.charAt(0) == '#')
  83                         try {
  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                         } catch (NumberFormatException e) {
  89                             Log.log(this, "invalid color " + s);
  90                             return;
  91                         }
  92                     else if (s.equals("black")) newcolor = black;
  93                     else if (s.equals("blue")) newcolor = blue;
  94                     else if (s.equals("green")) newcolor = green;
  95                     else if (s.equals("cyan")) newcolor = cyan;
  96                     else if (s.equals("red")) newcolor = red;
  97                     else if (s.equals("magenta")) newcolor = magenta;
  98                     else if (s.equals("brown")) newcolor = brown;
  99                     else if (s.equals("lightGray")) newcolor = lightGray;
 100                     else if (s.equals("darkGray")) newcolor = darkGray;
 101                     else if (s.equals("brightBlue")) newcolor = brightBlue;
 102                     else if (s.equals("brightGreen")) newcolor = brightGreen;
 103                     else if (s.equals("brightCyan")) newcolor = brightCyan;
 104                     else if (s.equals("brightRed")) newcolor = brightRed;
 105                     else if (s.equals("pink")) newcolor = pink;
 106                     else if (s.equals("yellow")) newcolor = yellow;
 107                     else if (s.equals("white")) newcolor = white;
 108                     else if (Log.on) Log.logJS(this, "invalid color \"" + s + "\"");
 109                     if (newcolor == b.color) return;
 110                     b.color = newcolor;
 111                     b.dirty();
 112                 } });
 113
 114
 115         specialBoxProperties.put("textcolor", new SpecialBoxProperty() {
 116                 public Object get(Box b) {
 117                     if ((b.textcolor & 0xFF000000) == 0) return null;
 118                     String red = Integer.toHexString((b.textcolor & 0x00FF0000) >> 16);
 119                     String green = Integer.toHexString((b.textcolor & 0x0000FF00) >> 8);
 120                     String blue = Integer.toHexString(b.textcolor & 0x000000FF);
 121                     if (red.length() < 2) red = "0" + red;
 122                     if (blue.length() < 2) blue = "0" + blue;
 123                     if (green.length() < 2) green = "0" + green;
 124                     return "#" + red + green + blue;
 125                 }
 126                 public void put(Box b, Object value) {
 127                     int newtextcolor = b.color;
 128                     if (value == null) return;
 129                     String s = value.toString();
 130                     if (s.length() > 0 && s.charAt(0) == '#')
 131                         newtextcolor = 0xFF000000 |
 132                             (Integer.parseInt(s.substring(1, 3), 16) << 16) |
 133                             (Integer.parseInt(s.substring(3, 5), 16) << 8) |
 134                             Integer.parseInt(s.substring(5, 7), 16);
 135                     else if (s.equals("black")) newtextcolor = black;
 136                     else if (s.equals("blue")) newtextcolor = blue;
 137                     else if (s.equals("green")) newtextcolor = green;
 138                     else if (s.equals("cyan")) newtextcolor = cyan;
 139                     else if (s.equals("red")) newtextcolor = red;
 140                     else if (s.equals("magenta")) newtextcolor = magenta;
 141                     else if (s.equals("brown")) newtextcolor = brown;
 142                     else if (s.equals("lightGray")) newtextcolor = lightGray;
 143                     else if (s.equals("darkGray")) newtextcolor = darkGray;
 144                     else if (s.equals("brightBlue")) newtextcolor = brightBlue;
 145                     else if (s.equals("brightGreen")) newtextcolor = brightGreen;
 146                     else if (s.equals("brightCyan")) newtextcolor = brightCyan;
 147                     else if (s.equals("brightRed")) newtextcolor = brightRed;
 148                     else if (s.equals("pink")) newtextcolor = pink;
 149                     else if (s.equals("yellow")) newtextcolor = yellow;
 150                     else if (s.equals("white")) newtextcolor = white;
 151                     else if (Log.on) Log.logJS(this, "invalid color \"" + s + "\"");
 152                     if (newtextcolor == b.textcolor) return;
 153                     b.textcolor = newtextcolor;
 154                     b.dirty();
 155                 } });
 156
 157         specialBoxProperties.put("text", new SpecialBoxProperty() {
 158                 public Object get(Box b) { return b.text; }
 159                 public void put(Box b, Object value) {
 160                     String t = value == null ? "null" : value.toString();
 161                     if (t.equals(b.text)) return;
 162
 163                     for(int i=0; i<t.length(); i++)
 164                         if (Character.isISOControl(t.charAt(i))) {
 165                             if (Log.on) Log.log(this,
 166                                                 "ISO Control characters are not permitted in box text strings; offending character is ASCII " +
 167                                                ((int)t.charAt(i)));
 168                             return;
 169                         }
 170
 171                     // FEATURE: try removing the following line; it appears to be redundant
 172                     b.dirty();
 173                     b.text = t;
 174                     b.textupdate();
 175                     b.dirty();
 176                 } });
 177
 178         specialBoxProperties.put("thisbox", new SpecialBoxProperty() {
 179                 public Object get(Box b) { return b; }
 180                 public void put(Box b, Object value) {
 181                     if (value == null) b.remove();
 182                     else if (value.equals("window") || value.equals("frame")) {
 183                         if (b.redirect != b && Log.on)
 184                             Log.log(this, "WARNING: you have created a surface whose root box's redirect is not itself " +
 185                                     "-- this isn't usually a good idea");
 186                         Platform.createSurface(b, value.equals("frame"), true);
 187                     } else if (Log.on) Log.log(this, "put invalid value to 'thisbox' property: " + value);
 188                 }
 189             });
 190
 191         specialBoxProperties.put("orient", new SpecialBoxProperty() {
 192                 public Object get(Box b) {
 193                     if (b.redirect == null) return "horizontal";
 194                     else if (b.redirect != b) return get(b.redirect);
 195                     else if (b.o == 1) return "vertical";
 196                     else return "horizontal";
 197                 }
 198                 public void put(Box b, Object value) {
 199                     if (value == null) return;
 200                     if (b.redirect == null) return;
 201                     if (b.redirect != b) {
 202                         put(b.redirect, value);
 203                         return;
 204                     }
 205                     if (value.equals("vertical")) {
 206                         if (b.o == 1) return;
 207                         b.o = 1;
 208                         b.xo = 0;
 209                     } else if (value.equals("horizontal")) {
 210                         if (b.o == 0) return;
 211                         b.o = 0;
 212                         b.xo = 1;
 213                     } else if (Log.on)
 214                         Log.log(this, "invalid value put to orient property: " + value);
 215                     b.mark_for_prerender();
 216                     b.sync_cmin_to_children();
 217                 } });
 218
 219         specialBoxProperties.put("static", new SpecialBoxProperty() {
 220                 public Object get(Box b) {
 221                     String cfsn = JS.Thread.fromJavaThread(Thread.currentThread()).getCurrentCompiledFunction().getSourceName();
 222                     for(int i=0; i<cfsn.length() - 1; i++)
 223                         if (cfsn.charAt(i) == '.' && (cfsn.charAt(i+1) == '_' || Character.isDigit(cfsn.charAt(i+1)))) {
 224                             cfsn = cfsn.substring(0, i);
 225                             break;
 226                         }
 227                     return Static.getStatic(cfsn);
 228                 }
 229                 public void put(Box b, Object value) { }
 230             });
 231
 232         specialBoxProperties.put("sizetoimage", new SpecialBoxProperty() {
 233                 public Object get(Box b) { return b.sizetoimage ? Boolean.TRUE : Boolean.FALSE; }
 234                 public void put(Box b, Object value) {
 235                     if (stob(value)) {
 236                         if (b.sizetoimage) return;
 237                         b.sizetoimage = true;
 238                         b.syncSizeToImage();
 239                     } else {
 240                         b.sizetoimage = false;
 241                     }
 242                 } });
 243
 244         specialBoxProperties.put("fixedaspect", new SpecialBoxProperty() {
 245                 public Object get(Box b) { return b.sizetoimage ? Boolean.TRUE : Boolean.FALSE; }
 246                 public void put(Box b, Object value) {
 247                     boolean newval = stob(value);
 248                     if (newval == b.fixedaspect) return;
 249                     b.fixedaspect = newval;
 250                     b.dirty();
 251                 } });
 252
 253         specialBoxProperties.put("shrink", new SpecialBoxProperty() {
 254                 public Object get(Box b) { return (b.vshrink && b.hshrink) ? Boolean.TRUE : Boolean.FALSE; }
 255                 public void put(Box b, Object value) {
 256                     boolean newshrink = stob(value);
 257                     if (b.hshrink == newshrink && b.vshrink == newshrink) return;
 258                     b.hshrink = b.vshrink = newshrink;
 259                     b.mark_for_prerender();
 260                 } });
 261
 262         specialBoxProperties.put("hshrink", new SpecialBoxProperty() {
 263                 public Object get(Box b) { return new Boolean(b.hshrink); }
 264                 public void put(Box b, Object value) {
 265                     boolean newshrink = stob(value);
 266                     if (b.hshrink == newshrink) return;
 267                     b.hshrink = newshrink;
 268                     b.mark_for_prerender();
 269                 }
 270             });
 271
 272         specialBoxProperties.put("vshrink", new SpecialBoxProperty() {
 273                 public Object get(Box b) { return b.vshrink ? Boolean.TRUE : Boolean.FALSE; }
 274                 public void put(Box b, Object value) {
 275                     boolean newshrink = stob(value);
 276                     if (b.vshrink == newshrink) return;
 277                     b.vshrink = newshrink;
 278                     b.mark_for_prerender();
 279                 }
 280             });
 281
 282         specialBoxProperties.put("x", new SpecialBoxProperty() {
 283                 public Object get(Box b) {
 284                     if (b.surface == null) return new Integer(0);
 285                     if (b.invisible) return new Integer(0);
 286                     return new Integer(b.abs(0));
 287                 }
 288                 public void put(Box b, Object value) {
 289                     if (b.getParent() == null && b.surface != null) {
 290                         b.surface.setLocation(stoi(value), b.abs(1));
 291                         b.surface.centerSurfaceOnRender = false;
 292                     }
 293                     b.set(abs, 0, stoi(value));
 294                 }
 295             });
 296
 297         specialBoxProperties.put("y", new SpecialBoxProperty() {
 298                 public Object get(Box b) {
 299                     if (b.surface == null) return new Integer(0);
 300                     if (b.invisible) return new Integer(0);
 301                     return new Integer(b.abs(1));
 302                 }
 303                 public void put(Box b, Object value) {
 304                     if (b.getParent() == null && b.surface != null) {
 305                         b.surface.setLocation(b.abs(0), stoi(value));
 306                         b.surface.centerSurfaceOnRender = false;
 307                     }
 308                     b.set(abs, 1, stoi(value));
 309                 }
 310             });
 311
 312         specialBoxProperties.put("width", new SpecialBoxProperty() {
 313                 public Object get(Box b) { return new Integer(b.size(0)); }
 314                 public void put(Box b, Object value) {
 315                     if (b.sizetoimage) return;
 316                     if (b.getParent() == null && b.surface != null) {
 317                         b.set(size, 0, Box.max(Surface.scarPicture.getWidth(), stoi(value)));
 318                         b.mark_for_prerender();
 319                     } else {
 320                         b.set(dmax, 0, stoi(value));
 321                         b.set(dmin, 0, stoi(value));
 322                     }
 323                 } });
 324
 325         specialBoxProperties.put("height", new SpecialBoxProperty() {
 326                 public Object get(Box b) { return new Integer(b.size(1)); }
 327                 public void put(Box b, Object value) {
 328                     if (b.sizetoimage) return;
 329                     if (b.getParent() == null && b.surface != null) {
 330                         b.set(size, 1, Box.max(Surface.scarPicture.getHeight(), stoi(value)));
 331                         b.mark_for_prerender();
 332                     } else {
 333                         b.set(dmax, 1, stoi(value));
 334                         b.set(dmin, 1, stoi(value));
 335                     }
 336                 } });
 337
 338         specialBoxProperties.put("flex", new SpecialBoxProperty() {
 339                 public Object get(Box b) { return new Double(b.flex); }
 340                 public void put(Box b, Object value) {
 341                     if (value == null) return;
 342                     int newflex = stoi(value);
 343                     if (newflex == b.flex) return;
 344                     b.flex = newflex;
 345                     b.mark_for_prerender();
 346                 } });
 347
 348         specialBoxProperties.put("tile", new SpecialBoxProperty() {
 349                 public Object get(Box b) { return b.tile ? Boolean.TRUE : Boolean.FALSE; }
 350                 public void put(Box b, Object value) {
 351                     boolean newtile = stob(value);
 352                     if (newtile == b.tile) return;
 353                     b.tile = newtile;
 354                     b.dirty();
 355                 } });
 356
 357         specialBoxProperties.put("align", new SpecialBoxProperty() {
 358                 public Object get(Box b) {
 359                     if (b.align == -1) return "topleft";
 360                     else if (b.align == 1) return "bottomright";
 361                     else return "center";
 362                 }
 363                 public void put(Box b, Object value) {
 364                     String s = value == null ? "" : value.toString();
 365                     byte newalign = b.align;
 366                     if (s.equals("topleft")) newalign = -1;
 367                     else if (s.equals("bottomright")) newalign = 1;
 368                     else if (s.equals("center")) newalign = 0;
 369                     else if (Log.on) Log.log(this, "invalid value put to align property: " + value);
 370                     if (newalign == b.align) return;
 371                     b.align = newalign;
 372                     if (b.getParent() != null) b.getParent().mark_for_prerender();
 373                 } });
 374
 375         specialBoxProperties.put("invisible", new SpecialBoxProperty() {
 376                 public Object get(Box b) {
 377                     for (Box cur = b; cur != null; cur = cur.getParent()) { if (cur.invisible) return Boolean.TRUE; }
 378                     return Boolean.FALSE;
 379                 }
 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                     b.font = value == null ? null : value.toString();
 421                     b.fontChanged();
 422                     b.dirty();
 423                 } });
 424
 425         specialBoxProperties.put("globalx", new SpecialBoxProperty() {
 426                 public Object get(Box b) { return new Integer(b.getParent() == null || b.surface == null ? 0 : b.pos(0)); }
 427                 public void put(Box b, Object value) {
 428                     if (b.surface == null || b.getParent() == null) return;
 429                     b.put("x", new Integer(stoi(value) - stoi(get(b.getParent()))));
 430                 }
 431             });
 432
 433         specialBoxProperties.put("globaly", new SpecialBoxProperty() {
 434                 public Object get(Box b) { return new Integer(b.getParent() == null || b.surface == null ? 0 : b.pos(1)); }
 435                 public void put(Box b, Object value) {
 436                     if (b.surface == null || b.getParent() == null) return;
 437                     b.put("y", new Integer(stoi(value) - stoi(get(b.getParent()))));
 438                 }
 439             });
 440
 441         specialBoxProperties.put("cursor", new SpecialBoxProperty() {
 442                 public Object get(Box b) { return b.cursor; }
 443                 public void put(Box b, Object value) {
 444                     b.cursor = (String)value;
 445                     if (b.surface == null) return;
 446
 447                     // see if we need to update the surface cursor
 448                     String tempcursor = b.surface.cursor;
 449                     b.Move(b.surface.mousex, b.surface.mousey, b.surface.mousex, b.surface.mousey);
 450                     if (b.surface.cursor != tempcursor) b.surface.syncCursor();
 451                 }
 452             });
 453
 454         specialBoxProperties.put("mousex", new SpecialBoxProperty() {
 455                 public Object get(Box b) { return new Integer(b.surface == null ? 0 : b.surface.mousex - b.pos(0)); }
 456             });
 457
 458         specialBoxProperties.put("mousey", new SpecialBoxProperty() {
 459                 public Object get(Box b) { return new Integer(b.surface == null ? 0 : b.surface.mousey - b.pos(1)); }
 460             });
 461
 462         specialBoxProperties.put("xwt", new SpecialBoxProperty() {
 463                 public Object get(Box b) { return XWT.singleton; }
 464             });
 465
 466         specialBoxProperties.put("mouseinside", new SpecialBoxProperty() {
 467                 public Object get(Box b) { return b.mouseinside ? Boolean.TRUE : Boolean.FALSE; }
 468             });
 469
 470         specialBoxProperties.put("numchildren", new SpecialBoxProperty() {
 471                 public Object get(Box b) {
 472                     if (b.redirect == null) return new Integer(0);
 473                     if (b.redirect != b) return get(b.redirect);
 474                     return new Integer(b.numChildren());
 475                 } });
 476
 477         SpecialBoxProperty mouseEventHandler = new SpecialBoxProperty() {
 478                 public void put(String name, Box b, Object value) {
 479                     if (b.surface == null) return;
 480                     for(Box c = b.prevSibling(); c != null; c = c.prevSibling()) {
 481                         Box siblingChild = c.whoIs(c.surface.mousex, c.surface.mousey);
 482                         if (siblingChild != null) {
 483                             siblingChild.put(name, value);
 484                             return;
 485                         }
 486                     }
 487                     if (b.getParent() != null)
 488                         b.getParent().put(name, value);
 489                 }};
 490
 491         specialBoxProperties.put("Press1", mouseEventHandler);
 492         specialBoxProperties.put("Press2", mouseEventHandler);
 493         specialBoxProperties.put("Press3", mouseEventHandler);
 494         specialBoxProperties.put("Release1", mouseEventHandler);
 495         specialBoxProperties.put("Release2", mouseEventHandler);
 496         specialBoxProperties.put("Release3", mouseEventHandler);
 497         specialBoxProperties.put("Click1", mouseEventHandler);
 498         specialBoxProperties.put("Click2", mouseEventHandler);
 499         specialBoxProperties.put("Click3", mouseEventHandler);
 500         specialBoxProperties.put("DoubleClick1", mouseEventHandler);
 501         specialBoxProperties.put("DoubleClick2", mouseEventHandler);
 502         specialBoxProperties.put("DoubleClick3", mouseEventHandler);
 503
 504         specialBoxProperties.put("root", new SpecialBoxProperty() {
 505                 public Object get(Box b) {
 506                     if (b.surface == null) return null;
 507                     else if (b.getRoot() == null) return null;
 508                     else if (b.getParent() == null) return b;
 509                     else return b.getRoot().getRootProxy();
 510                 } });
 511
 512         specialBoxProperties.put("Minimized", new SpecialBoxProperty() {
 513                 public Object get(Box b) {
 514                     if (b.getParent() == null && b.surface != null) return b.surface.minimized ? 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.minimized != val) b.surface.setMinimized(val);
 521                 }
 522             });
 523
 524         specialBoxProperties.put("Maximized", new SpecialBoxProperty() {
 525                 public Object get(Box b) {
 526                     if (b.getParent() == null && b.surface != null) return b.surface.maximized ? Boolean.TRUE : Boolean.FALSE;
 527                     else return null;
 528                 }
 529                 public void put(Box b, Object value) {
 530                     if (b.surface == null) return;
 531                     boolean val = stob(value);
 532                     if (b.getParent() == null && b.surface.maximized != val) b.surface.setMaximized(val);
 533                 }
 534             });
 535
 536         specialBoxProperties.put("toback", new SpecialBoxProperty() {
 537                 public void put(Box b, Object value) {
 538                     if (b.getParent() == null && stob(value) && b.surface != null) b.surface.toBack();
 539                 }
 540             });
 541
 542         specialBoxProperties.put("tofront", new SpecialBoxProperty() {
 543                 public void put(Box b, Object value) {
 544                     if (b.getParent() == null && stob(value) && b.surface != null) b.surface.toFront();
 545                 }
 546             });
 547
 548         specialBoxProperties.put("hscar", new SpecialBoxProperty() {
 549                 public void put(Box b, Object value) {
 550                     if (b.getParent() == null && b.surface != null) {
 551                         b.surface.hscar = stoi(value);
 552                         b.surface.dirty(0, 0, b.surface.width, b.surface.height);
 553                         b.surface.Refresh();
 554                     }
 555                 }
 556             });
 557
 558         specialBoxProperties.put("vscar", new SpecialBoxProperty() {
 559                 public void put(Box b, Object value) {
 560                     if (b.getParent() == null && b.surface != null) {
 561                         b.surface.vscar = stoi(value);
 562                         b.surface.dirty(0, 0, b.surface.width, b.surface.height);
 563                         b.surface.Refresh();
 564                     }
 565                 }
 566             });
 567
 568         specialBoxProperties.put("Close", new SpecialBoxProperty() {
 569                 public void put(Box b, Object value) {
 570                     if (b.getParent() == null && b.surface != null) b.surface.dispose(true);
 571                 }
 572             });
 573
 574         // these are all do-nothings; just to prevent space from getting taken up in the params Hash.
 575         specialBoxProperties.put("KeyPressed", new SpecialBoxProperty());
 576         specialBoxProperties.put("KeyReleased", new SpecialBoxProperty());
 577         specialBoxProperties.put("PosChange", new SpecialBoxProperty());
 578         specialBoxProperties.put("SizeChange", new SpecialBoxProperty());
 579
 580         specialBoxProperties.put("hpad", new SpecialBoxProperty() {
 581                 public Object get(Box b) {
 582                     if (b.redirect == null) return new Integer(0);
 583                     if (b.redirect != b) return get(b.redirect);
 584                     return new Integer(b.pad(0));
 585                 }
 586                 public void put(Box b, Object value) {
 587                     if (b.redirect == null) return;
 588                     if (b.redirect != b) { put(b.redirect, value); return; }
 589                     int newval = stoi(value);
 590                     if (newval == b.pad(0)) return;
 591                     b.set(pad, 0, newval);
 592                 }
 593             });
 594
 595         specialBoxProperties.put("vpad", new SpecialBoxProperty() {
 596                 public Object get(Box b) {
 597                     if (b.redirect == null) return new Integer(0);
 598                     if (b.redirect != b) return get(b.redirect);
 599                     return new Integer(b.pad(1));
 600                 }
 601                 public void put(Box b, Object value) {
 602                     if (b.redirect == null) return;
 603                     if (b.redirect != b) { put(b.redirect, value); return; }
 604                     int newval = stoi(value);
 605                     if (newval == b.pad(1)) return;
 606                     b.set(pad, 1, newval);
 607                 }
 608             });
 609
 610         specialBoxProperties.put("indexof", new SpecialBoxProperty() {
 611                 public Object get(Box b) { return b.indexof(); }
 612             });
 613
 614         specialBoxProperties.put("minwidth", new SpecialBoxProperty() {
 615                 public Object get(Box b) { return new Integer(b.dmin(0)); }
 616                 public void put(Box b, Object value) {
 617                     if (b.sizetoimage) return;
 618                     b.set(dmin, 0, stoi(value));
 619                 }
 620             });
 621
 622         specialBoxProperties.put("maxwidth", new SpecialBoxProperty() {
 623                 public Object get(Box b) { return new Integer(b.dmax(0)); }
 624                 public void put(Box b, Object value) {
 625                     if (b.sizetoimage) return;
 626                     b.set(dmax, 0, stoi(value));
 627                 }
 628             });
 629
 630         specialBoxProperties.put("minheight", new SpecialBoxProperty() {
 631                 public Object get(Box b) { return new Integer(b.dmin(1)); }
 632                 public void put(Box b, Object value) {
 633                     if (b.sizetoimage) return;
 634                     b.set(dmin, 1, stoi(value));
 635                 }
 636             });
 637
 638         specialBoxProperties.put("maxheight", new SpecialBoxProperty() {
 639                 public Object get(Box b) { return new Integer(b.dmax(1)); }
 640                 public void put(Box b, Object value) {
 641                     if (b.sizetoimage) return;
 642                     b.set(dmax, 1, stoi(value));
 643                 }
 644             });
 645
 646         specialBoxProperties.put("redirect", new SpecialBoxProperty() {
 647                 public void put(Box b, Object value) { }
 648                 public Object get(Box b) {
 649                     if (b.redirect == null) return null;
 650                     if (b.redirect == b) return Boolean.TRUE;
 651                     return get(b.redirect);
 652                 }
 653             });
 654
 655         specialBoxProperties.put("apply", new SpecialBoxProperty() {
 656                 public void put(Box b, Object value) { }
 657                 public Object get(final Box b) { return new Apply(b); }
 658             });
 659
 660         specialBoxProperties.put("id", new SpecialBoxProperty() {
 661                 public void put(Box b, Object value) { }
 662                 public Object get(Box b) { return b.id; }
 663             });
 664     }
 665
 666
 667     /** helper that converts a String to a boolean according to JavaScript coercion rules */
 668     public static boolean stob(Object o) {
 669         if (o == null) return false;
 670         return Boolean.TRUE.equals(o) || "true".equals(o);
 671     }
 672
 673     /** helper that converts a String to an int according to JavaScript coercion rules */
 674     public static int stoi(Object o) {
 675         if (o == null) return 0;
 676         if (o instanceof Integer) return ((Integer)o).intValue();
 677
 678         String s;
 679         if (!(o instanceof String)) s = o.toString();
 680         else s = (String)o;
 681
 682         try { return Integer.parseInt(s.indexOf('.') == -1 ? s : s.substring(0, s.indexOf('.'))); }
 683         catch (NumberFormatException e) { return 0; }
 684     }
 685
 686     private static class Apply extends JS.Callable {
 687         Box b;
 688         public Apply(Box b) { this.b = b; }
 689         public Object call(JS.Array args) throws JS.Exn {
 690             if (args.elementAt(0) instanceof String) {
 691                 String templatename = (String)args.elementAt(0);
 692                 Template t = Template.getTemplate(templatename, null);
 693                 if (t == null) {
 694                     if (Log.on) Log.logJS(this, "template " + templatename + " not found");
 695                 } else {
 696                     if (ThreadMessage.suspendThread()) try {
 697                         JS.Callable callback = args.length() < 2 ? null : (Callable)args.elementAt(1);
 698                         t.apply(b, null, null, callback, 0, t.numUnits());
 699                     } finally {
 700                         ThreadMessage.resumeThread();
 701                     }
 702                 }
 703
 704             } else if (args.elementAt(0) instanceof JS && !(args.elementAt(0) instanceof Box)) {
 705                 JS s = (JS)args.elementAt(0);
 706                 Object[] keys = s.keys();
 707                 for(int j=0; j<keys.length; j++) b.put(keys[j].toString(), s.get(keys[j]));
 708             }
 709
 710             return b;
 711         }
 712     }
 713 }
 714
 715
 716