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                         newcolor = 0xFF000000 |
  85                             (Integer.parseInt(s.substring(1, 3), 16) << 16) |
  86                             (Integer.parseInt(s.substring(3, 5), 16) << 8) |
  87                             Integer.parseInt(s.substring(5, 7), 16);
  88                     else if (s.equals("black")) newcolor = black;
  89                     else if (s.equals("blue")) newcolor = blue;
  90                     else if (s.equals("green")) newcolor = green;
  91                     else if (s.equals("cyan")) newcolor = cyan;
  92                     else if (s.equals("red")) newcolor = red;
  93                     else if (s.equals("magenta")) newcolor = magenta;
  94                     else if (s.equals("brown")) newcolor = brown;
  95                     else if (s.equals("lightGray")) newcolor = lightGray;
  96                     else if (s.equals("darkGray")) newcolor = darkGray;
  97                     else if (s.equals("brightBlue")) newcolor = brightBlue;
  98                     else if (s.equals("brightGreen")) newcolor = brightGreen;
  99                     else if (s.equals("brightCyan")) newcolor = brightCyan;
 100                     else if (s.equals("brightRed")) newcolor = brightRed;
 101                     else if (s.equals("pink")) newcolor = pink;
 102                     else if (s.equals("yellow")) newcolor = yellow;
 103                     else if (s.equals("white")) newcolor = white;
 104                     else if (Log.on) Log.log(this, "invalid color \"" + s + "\" at " + JS.getCurrentFunctionSourceName());
 105                     if (newcolor == b.color) return;
 106                     b.color = newcolor;
 107                     b.dirty();
 108                 } });
 109
 110
 111         specialBoxProperties.put("textcolor", new SpecialBoxProperty() {
 112                 public Object get(Box b) {
 113                     if ((b.textcolor & 0xFF000000) == 0) return null;
 114                     String red = Integer.toHexString((b.textcolor & 0x00FF0000) >> 16);
 115                     String green = Integer.toHexString((b.textcolor & 0x0000FF00) >> 8);
 116                     String blue = Integer.toHexString(b.textcolor & 0x000000FF);
 117                     if (red.length() < 2) red = "0" + red;
 118                     if (blue.length() < 2) blue = "0" + blue;
 119                     if (green.length() < 2) green = "0" + green;
 120                     return "#" + red + green + blue;
 121                 }
 122                 public void put(Box b, Object value) {
 123                     int newtextcolor = b.color;
 124                     if (value == null) return;
 125                     String s = 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 color \"" + s + "\" at " + JS.getCurrentFunctionSourceName());
 148                     if (newtextcolor == b.textcolor) return;
 149                     b.textcolor = newtextcolor;
 150                     b.dirty();
 151                 } });
 152
 153         specialBoxProperties.put("text", new SpecialBoxProperty() {
 154                 public Object get(Box b) { return b.text; }
 155                 public void put(Box b, Object value) {
 156                     String t = value == null ? "null" : value.toString();
 157                     if (t.equals(b.text)) return;
 158
 159                     for(int i=0; i<t.length(); i++)
 160                         if (Character.isISOControl(t.charAt(i))) {
 161                             if (Log.on) Log.log(this,
 162                                                 "ISO Control characters are not permitted in box text strings; offending character is ASCII " +
 163                                                ((int)t.charAt(i)));
 164                             return;
 165                         }
 166
 167                     // FEATURE: try removing the following line; it appears to be redundant
 168                     b.dirty();
 169                     b.text = t;
 170                     b.textupdate();
 171                     b.dirty();
 172                 } });
 173
 174         specialBoxProperties.put("thisbox", new SpecialBoxProperty() {
 175                 public Object get(Box b) { return b; }
 176                 public void put(Box b, Object value) {
 177                     if (value == null) b.remove();
 178                     else if (value.equals("window") || value.equals("frame")) {
 179                         if (b.redirect != b && Log.on)
 180                             Log.log(this, "WARNING: you have created a surface whose root box's redirect is not itself " +
 181                                     "-- this isn't usually a good idea");
 182                         Platform.createSurface(b, value.equals("frame"), true);
 183                     } else if (Log.on) Log.log(this, "put invalid value to 'thisbox' property: " + value);
 184                 }
 185             });
 186
 187         specialBoxProperties.put("orient", new SpecialBoxProperty() {
 188                 public Object get(Box b) {
 189                     if (b.redirect == null) return "horizontal";
 190                     else if (b.redirect != b) return get(b.redirect);
 191                     else if (b.o == 1) return "vertical";
 192                     else return "horizontal";
 193                 }
 194                 public void put(Box b, Object value) {
 195                     if (value == null) return;
 196                     if (b.redirect == null) return;
 197                     if (b.redirect != b) {
 198                         put(b.redirect, value);
 199                         return;
 200                     }
 201                     if (value.equals("vertical")) {
 202                         if (b.o == 1) return;
 203                         b.o = 1;
 204                         b.xo = 0;
 205                     } else if (value.equals("horizontal")) {
 206                         if (b.o == 0) return;
 207                         b.o = 0;
 208                         b.xo = 1;
 209                     } else if (Log.on)
 210                         Log.log(this, "invalid value put to orient property: " + value);
 211                     b.mark_for_prerender();
 212                     b.sync_cmin_to_children();
 213                 } });
 214
 215         specialBoxProperties.put("static", new SpecialBoxProperty() {
 216                 public Object get(Box b) {
 217                     String cfsn = JS.getCurrentFunction().getSourceName();
 218                     for(int i=0; i<cfsn.length() - 1; i++)
 219                         if (cfsn.charAt(i) == '.' && (cfsn.charAt(i+1) == '_' || Character.isDigit(cfsn.charAt(i+1)))) {
 220                             cfsn = cfsn.substring(0, i);
 221                             break;
 222                         }
 223                     return Static.getStatic(cfsn);
 224                 }
 225                 public void put(Box b, Object value) { }
 226             });
 227
 228         specialBoxProperties.put("sizetoimage", new SpecialBoxProperty() {
 229                 public Object get(Box b) { return b.sizetoimage ? Boolean.TRUE : Boolean.FALSE; }
 230                 public void put(Box b, Object value) {
 231                     if (stob(value)) {
 232                         if (b.sizetoimage) return;
 233                         b.sizetoimage = true;
 234                         b.syncSizeToImage();
 235                     } else {
 236                         b.sizetoimage = false;
 237                     }
 238                 } });
 239
 240         specialBoxProperties.put("fixedaspect", new SpecialBoxProperty() {
 241                 public Object get(Box b) { return b.sizetoimage ? Boolean.TRUE : Boolean.FALSE; }
 242                 public void put(Box b, Object value) {
 243                     boolean newval = stob(value);
 244                     if (newval == b.fixedaspect) return;
 245                     b.fixedaspect = newval;
 246                     b.dirty();
 247                 } });
 248
 249         specialBoxProperties.put("shrink", new SpecialBoxProperty() {
 250                 public Object get(Box b) { return (b.vshrink && b.hshrink) ? Boolean.TRUE : Boolean.FALSE; }
 251                 public void put(Box b, Object value) {
 252                     boolean newshrink = stob(value);
 253                     if (b.hshrink == newshrink && b.vshrink == newshrink) return;
 254                     b.hshrink = b.vshrink = newshrink;
 255                     b.mark_for_prerender();
 256                 } });
 257
 258         specialBoxProperties.put("hshrink", new SpecialBoxProperty() {
 259                 public Object get(Box b) { return new Boolean(b.hshrink); }
 260                 public void put(Box b, Object value) {
 261                     boolean newshrink = stob(value);
 262                     if (b.hshrink == newshrink) return;
 263                     b.hshrink = newshrink;
 264                     b.mark_for_prerender();
 265                 }
 266             });
 267
 268         specialBoxProperties.put("vshrink", new SpecialBoxProperty() {
 269                 public Object get(Box b) { return b.vshrink ? Boolean.TRUE : Boolean.FALSE; }
 270                 public void put(Box b, Object value) {
 271                     boolean newshrink = stob(value);
 272                     if (b.vshrink == newshrink) return;
 273                     b.vshrink = newshrink;
 274                     b.mark_for_prerender();
 275                 }
 276             });
 277
 278         specialBoxProperties.put("x", new SpecialBoxProperty() {
 279                 public Object get(Box b) {
 280                     if (b.surface == null) return new Integer(0);
 281                     if (b.invisible) return new Integer(0);
 282                     return new Integer(b.abs(0));
 283                 }
 284                 public void put(Box b, Object value) {
 285                     if (b.getParent() == null && b.surface != null) {
 286                         b.surface.setLocation(stoi(value), b.abs(1));
 287                         b.surface.centerSurfaceOnRender = false;
 288                     }
 289                     b.set(abs, 0, stoi(value));
 290                 }
 291             });
 292
 293         specialBoxProperties.put("y", new SpecialBoxProperty() {
 294                 public Object get(Box b) {
 295                     if (b.surface == null) return new Integer(0);
 296                     if (b.invisible) return new Integer(0);
 297                     return new Integer(b.abs(1));
 298                 }
 299                 public void put(Box b, Object value) {
 300                     if (b.getParent() == null && b.surface != null) {
 301                         b.surface.setLocation(b.abs(0), stoi(value));
 302                         b.surface.centerSurfaceOnRender = false;
 303                     }
 304                     b.set(abs, 1, stoi(value));
 305                 }
 306             });
 307
 308         specialBoxProperties.put("width", new SpecialBoxProperty() {
 309                 public Object get(Box b) { return new Integer(b.size(0)); }
 310                 public void put(Box b, Object value) {
 311                     if (b.sizetoimage) return;
 312                     if (b.getParent() == null && b.surface != null) {
 313                         b.set(size, 0, Box.max(Surface.scarPicture.getWidth(), stoi(value)));
 314                         b.mark_for_prerender();
 315                     } else {
 316                         b.set(dmax, 0, stoi(value));
 317                         b.set(dmin, 0, stoi(value));
 318                     }
 319                 } });
 320
 321         specialBoxProperties.put("height", new SpecialBoxProperty() {
 322                 public Object get(Box b) { return new Integer(b.size(1)); }
 323                 public void put(Box b, Object value) {
 324                     if (b.sizetoimage) return;
 325                     if (b.getParent() == null && b.surface != null) {
 326                         b.set(size, 1, Box.max(Surface.scarPicture.getHeight(), stoi(value)));
 327                         b.mark_for_prerender();
 328                     } else {
 329                         b.set(dmax, 1, stoi(value));
 330                         b.set(dmin, 1, stoi(value));
 331                     }
 332                 } });
 333
 334         specialBoxProperties.put("flex", new SpecialBoxProperty() {
 335                 public Object get(Box b) { return new Double(b.flex); }
 336                 public void put(Box b, Object value) {
 337                     if (value == null) return;
 338                     int newflex = stoi(value);
 339                     if (newflex == b.flex) return;
 340                     b.flex = newflex;
 341                     b.mark_for_prerender();
 342                 } });
 343
 344         specialBoxProperties.put("tile", new SpecialBoxProperty() {
 345                 public Object get(Box b) { return b.tile ? Boolean.TRUE : Boolean.FALSE; }
 346                 public void put(Box b, Object value) {
 347                     boolean newtile = stob(value);
 348                     if (newtile == b.tile) return;
 349                     b.tile = newtile;
 350                     b.dirty();
 351                 } });
 352
 353         specialBoxProperties.put("align", new SpecialBoxProperty() {
 354                 public Object get(Box b) {
 355                     if (b.align == -1) return "topleft";
 356                     else if (b.align == 1) return "bottomright";
 357                     else return "center";
 358                 }
 359                 public void put(Box b, Object value) {
 360                     String s = value == null ? "" : value.toString();
 361                     byte newalign = b.align;
 362                     if (s.equals("topleft")) newalign = -1;
 363                     else if (s.equals("bottomright")) newalign = 1;
 364                     else if (s.equals("center")) newalign = 0;
 365                     else if (Log.on) Log.log(this, "invalid value put to align property: " + value);
 366                     if (newalign == b.align) return;
 367                     b.align = newalign;
 368                     if (b.getParent() != null) b.getParent().mark_for_prerender();
 369                 } });
 370
 371         specialBoxProperties.put("invisible", new SpecialBoxProperty() {
 372                 public Object get(Box b) {
 373                     for (Box cur = b; cur != null; cur = cur.getParent()) { if (cur.invisible) return Boolean.TRUE; }
 374                     return Boolean.FALSE;
 375                 }
 376                 public void put(Box b, Object value) {
 377                     boolean newinvisible = stob(value);
 378                     if (newinvisible == b.invisible) return;
 379                     b.invisible = newinvisible;
 380                     if (b.getParent() == null) {
 381                         if (b.surface != null) b.surface.setInvisible(newinvisible);
 382                     } else {
 383                         b.dirty();
 384                         b.getParent().mark_for_prerender();
 385                         b.getParent().sync_cmin_to_children();
 386                         b.getParent().dirty(b.pos(0), b.pos(1), b.size(0), b.size(1));
 387                         b.getParent().dirty(b.oldpos(0), b.oldpos(1), b.oldsize(0), b.oldsize(1));
 388                     }
 389                 }});
 390
 391         specialBoxProperties.put("absolute", new SpecialBoxProperty() {
 392                 public Object get(Box b) { return b.absolute ? Boolean.TRUE : Boolean.FALSE; }
 393                 public void put(Box b, Object value) {
 394                     boolean newabsolute = stob(value);
 395                     if (newabsolute == b.absolute) return;
 396                     b.absolute = newabsolute;
 397                     if (b.getParent() != null) {
 398                         b.getParent().mark_for_prerender();
 399                         b.getParent().sync_cmin_to_children();
 400                     }
 401                 } });
 402
 403         specialBoxProperties.put("image", new SpecialBoxProperty() {
 404                 public Object get(Box b) { return b.image == null ? null : Box.imageToNameMap.get(b.image); }
 405                 public void put(Box b, Object value) { b.setImage(value == null ? null : value.toString()); }
 406             });
 407
 408         specialBoxProperties.put("border", new SpecialBoxProperty() {
 409                 public Object get(Box b) { return b.border == null ? null : Box.imageToNameMap.get(b.border); }
 410                 public void put(Box b, Object value) { b.setBorder(value == null ? null : value.toString()); }
 411             });
 412
 413         specialBoxProperties.put("font", new SpecialBoxProperty() {
 414                 public Object get(Box b) { return b.font; }
 415                 public void put(Box b, Object value) {
 416                     b.font = value == null ? null : value.toString();
 417                     b.fontChanged();
 418                     b.dirty();
 419                 } });
 420
 421         specialBoxProperties.put("globalx", new SpecialBoxProperty() {
 422                 public Object get(Box b) { return new Integer(b.getParent() == null || b.surface == null ? 0 : b.pos(0)); }
 423                 public void put(Box b, Object value) {
 424                     if (b.surface == null || b.getParent() == null) return;
 425                     b.put("x", new Integer(stoi(value) - stoi(get(b.getParent()))));
 426                 }
 427             });
 428
 429         specialBoxProperties.put("globaly", new SpecialBoxProperty() {
 430                 public Object get(Box b) { return new Integer(b.getParent() == null || b.surface == null ? 0 : b.pos(1)); }
 431                 public void put(Box b, Object value) {
 432                     if (b.surface == null || b.getParent() == null) return;
 433                     b.put("y", new Integer(stoi(value) - stoi(get(b.getParent()))));
 434                 }
 435             });
 436
 437         specialBoxProperties.put("cursor", new SpecialBoxProperty() {
 438                 public Object get(Box b) { return b.cursor; }
 439                 public void put(Box b, Object value) {
 440                     b.cursor = (String)value;
 441                     if (b.surface == null) return;
 442
 443                     // see if we need to update the surface cursor
 444                     String tempcursor = b.surface.cursor;
 445                     b.Move(b.surface.mousex, b.surface.mousey, b.surface.mousex, b.surface.mousey);
 446                     if (b.surface.cursor != tempcursor) b.surface.syncCursor();
 447                 }
 448             });
 449
 450         specialBoxProperties.put("mousex", new SpecialBoxProperty() {
 451                 public Object get(Box b) { return new Integer(b.surface == null ? 0 : b.surface.mousex - b.pos(0)); }
 452             });
 453
 454         specialBoxProperties.put("mousey", new SpecialBoxProperty() {
 455                 public Object get(Box b) { return new Integer(b.surface == null ? 0 : b.surface.mousey - b.pos(1)); }
 456             });
 457
 458         specialBoxProperties.put("xwt", new SpecialBoxProperty() {
 459                 public Object get(Box b) { return XWT.singleton; }
 460             });
 461
 462         specialBoxProperties.put("mouseinside", new SpecialBoxProperty() {
 463                 public Object get(Box b) { return b.mouseinside ? Boolean.TRUE : Boolean.FALSE; }
 464             });
 465
 466         specialBoxProperties.put("numchildren", new SpecialBoxProperty() {
 467                 public Object get(Box b) {
 468                     if (b.redirect == null) return new Integer(0);
 469                     if (b.redirect != b) return get(b.redirect);
 470                     return new Integer(b.numChildren());
 471                 } });
 472
 473         SpecialBoxProperty mouseEventHandler = new SpecialBoxProperty() {
 474                 public void put(String name, Box b, Object value) {
 475                     if (b.surface == null) return;
 476                     for(Box c = b.prevSibling(); c != null; c = c.prevSibling()) {
 477                         Box siblingChild = c.whoIs(c.surface.mousex, c.surface.mousey);
 478                         if (siblingChild != null) {
 479                             siblingChild.put(name, value);
 480                             return;
 481                         }
 482                     }
 483                     if (b.getParent() != null)
 484                         b.getParent().put(name, value);
 485                 }};
 486
 487         specialBoxProperties.put("Press1", mouseEventHandler);
 488         specialBoxProperties.put("Press2", mouseEventHandler);
 489         specialBoxProperties.put("Press3", mouseEventHandler);
 490         specialBoxProperties.put("Release1", mouseEventHandler);
 491         specialBoxProperties.put("Release2", mouseEventHandler);
 492         specialBoxProperties.put("Release3", mouseEventHandler);
 493         specialBoxProperties.put("Click1", mouseEventHandler);
 494         specialBoxProperties.put("Click2", mouseEventHandler);
 495         specialBoxProperties.put("Click3", mouseEventHandler);
 496         specialBoxProperties.put("DoubleClick1", mouseEventHandler);
 497         specialBoxProperties.put("DoubleClick2", mouseEventHandler);
 498         specialBoxProperties.put("DoubleClick3", mouseEventHandler);
 499
 500         specialBoxProperties.put("root", new SpecialBoxProperty() {
 501                 public Object get(Box b) {
 502                     if (b.surface == null) return null;
 503                     else if (b.getRoot() == null) return null;
 504                     else if (b.getParent() == null) return b;
 505                     else return b.getRoot().getRootProxy();
 506                 } });
 507
 508         specialBoxProperties.put("Minimized", new SpecialBoxProperty() {
 509                 public Object get(Box b) {
 510                     if (b.getParent() == null && b.surface != null) return b.surface.minimized ? Boolean.TRUE : Boolean.FALSE;
 511                     else return null;
 512                 }
 513                 public void put(Box b, Object value) {
 514                     if (b.surface == null) return;
 515                     boolean val = stob(value);
 516                     if (b.getParent() == null && b.surface.minimized != val) b.surface.setMinimized(val);
 517                 }
 518             });
 519
 520         specialBoxProperties.put("Maximized", new SpecialBoxProperty() {
 521                 public Object get(Box b) {
 522                     if (b.getParent() == null && b.surface != null) return b.surface.maximized ? Boolean.TRUE : Boolean.FALSE;
 523                     else return null;
 524                 }
 525                 public void put(Box b, Object value) {
 526                     if (b.surface == null) return;
 527                     boolean val = stob(value);
 528                     if (b.getParent() == null && b.surface.maximized != val) b.surface.setMaximized(val);
 529                 }
 530             });
 531
 532         specialBoxProperties.put("toback", new SpecialBoxProperty() {
 533                 public void put(Box b, Object value) {
 534                     if (b.getParent() == null && stob(value) && b.surface != null) b.surface.toBack();
 535                 }
 536             });
 537
 538         specialBoxProperties.put("tofront", new SpecialBoxProperty() {
 539                 public void put(Box b, Object value) {
 540                     if (b.getParent() == null && stob(value) && b.surface != null) b.surface.toFront();
 541                 }
 542             });
 543
 544         specialBoxProperties.put("hscar", new SpecialBoxProperty() {
 545                 public void put(Box b, Object value) {
 546                     if (b.getParent() == null && b.surface != null) {
 547                         b.surface.hscar = stoi(value);
 548                         b.surface.dirty(0, 0, b.surface.width, b.surface.height);
 549                         b.surface.Refresh();
 550                     }
 551                 }
 552             });
 553
 554         specialBoxProperties.put("vscar", new SpecialBoxProperty() {
 555                 public void put(Box b, Object value) {
 556                     if (b.getParent() == null && b.surface != null) {
 557                         b.surface.vscar = stoi(value);
 558                         b.surface.dirty(0, 0, b.surface.width, b.surface.height);
 559                         b.surface.Refresh();
 560                     }
 561                 }
 562             });
 563
 564         specialBoxProperties.put("Close", new SpecialBoxProperty() {
 565                 public void put(Box b, Object value) {
 566                     if (b.getParent() == null && b.surface != null) b.surface.dispose(true);
 567                 }
 568             });
 569
 570         // these are all do-nothings; just to prevent space from getting taken up in the params Hash.
 571         specialBoxProperties.put("KeyPressed", new SpecialBoxProperty());
 572         specialBoxProperties.put("KeyReleased", new SpecialBoxProperty());
 573         specialBoxProperties.put("PosChange", new SpecialBoxProperty());
 574         specialBoxProperties.put("SizeChange", new SpecialBoxProperty());
 575
 576         specialBoxProperties.put("hpad", new SpecialBoxProperty() {
 577                 public Object get(Box b) {
 578                     if (b.redirect == null) return new Integer(0);
 579                     if (b.redirect != b) return get(b.redirect);
 580                     return new Integer(b.pad(0));
 581                 }
 582                 public void put(Box b, Object value) {
 583                     if (b.redirect == null) return;
 584                     if (b.redirect != b) { put(b.redirect, value); return; }
 585                     int newval = stoi(value);
 586                     if (newval == b.pad(0)) return;
 587                     b.set(pad, 0, newval);
 588                 }
 589             });
 590
 591         specialBoxProperties.put("vpad", new SpecialBoxProperty() {
 592                 public Object get(Box b) {
 593                     if (b.redirect == null) return new Integer(0);
 594                     if (b.redirect != b) return get(b.redirect);
 595                     return new Integer(b.pad(1));
 596                 }
 597                 public void put(Box b, Object value) {
 598                     if (b.redirect == null) return;
 599                     if (b.redirect != b) { put(b.redirect, value); return; }
 600                     int newval = stoi(value);
 601                     if (newval == b.pad(1)) return;
 602                     b.set(pad, 1, newval);
 603                 }
 604             });
 605
 606         specialBoxProperties.put("indexof", new SpecialBoxProperty() {
 607                 public Object get(Box b) { return b.indexof(); }
 608             });
 609
 610         specialBoxProperties.put("minwidth", new SpecialBoxProperty() {
 611                 public Object get(Box b) { return new Integer(b.dmin(0)); }
 612                 public void put(Box b, Object value) {
 613                     if (b.sizetoimage) return;
 614                     b.set(dmin, 0, stoi(value));
 615                 }
 616             });
 617
 618         specialBoxProperties.put("maxwidth", new SpecialBoxProperty() {
 619                 public Object get(Box b) { return new Integer(b.dmax(0)); }
 620                 public void put(Box b, Object value) {
 621                     if (b.sizetoimage) return;
 622                     b.set(dmax, 0, stoi(value));
 623                 }
 624             });
 625
 626         specialBoxProperties.put("minheight", new SpecialBoxProperty() {
 627                 public Object get(Box b) { return new Integer(b.dmin(1)); }
 628                 public void put(Box b, Object value) {
 629                     if (b.sizetoimage) return;
 630                     b.set(dmin, 1, stoi(value));
 631                 }
 632             });
 633
 634         specialBoxProperties.put("maxheight", new SpecialBoxProperty() {
 635                 public Object get(Box b) { return new Integer(b.dmax(1)); }
 636                 public void put(Box b, Object value) {
 637                     if (b.sizetoimage) return;
 638                     b.set(dmax, 1, stoi(value));
 639                 }
 640             });
 641
 642         specialBoxProperties.put("redirect", new SpecialBoxProperty() {
 643                 public void put(Box b, Object value) { }
 644                 public Object get(Box b) {
 645                     if (b.redirect == null) return null;
 646                     if (b.redirect == b) return Boolean.TRUE;
 647                     return get(b.redirect);
 648                 }
 649             });
 650
 651         specialBoxProperties.put("apply", new SpecialBoxProperty() {
 652                 public void put(Box b, Object value) { }
 653                 public Object get(Box b) { return new Apply(b); }
 654             });
 655
 656         specialBoxProperties.put("id", new SpecialBoxProperty() {
 657                 public void put(Box b, Object value) { }
 658                 public Object get(Box b) { return b.id; }
 659             });
 660     }
 661
 662
 663     /** helper that converts a String to a boolean according to JavaScript coercion rules */
 664     public static boolean stob(Object o) {
 665         if (o == null) return false;
 666         return Boolean.TRUE.equals(o) || "true".equals(o);
 667     }
 668
 669     /** helper that converts a String to an int according to JavaScript coercion rules */
 670     public static int stoi(Object o) {
 671         if (o == null) return 0;
 672         if (o instanceof Integer) return ((Integer)o).intValue();
 673
 674         String s;
 675         if (!(o instanceof String)) s = o.toString();
 676         else s = (String)o;
 677
 678         try { return Integer.parseInt(s.indexOf('.') == -1 ? s : s.substring(0, s.indexOf('.'))); }
 679         catch (NumberFormatException e) { return 0; }
 680     }
 681
 682     /** helper that converts a String to a int according to JavaScript coercion rules */
 683     public static class Apply extends JS.Function {
 684
 685         Box b;
 686         public Apply(Box b) { this.b = b; }
 687
 688         public Object _call(JS.Array args) throws JS.Exn {
 689
 690             // apply a template
 691             if (args.elementAt(0) instanceof String) {
 692                 String templatename = (String)args.elementAt(0);
 693                 Template t = Template.getTemplate(templatename, null);
 694                 if (t == null) {
 695                     if (Log.on) Log.log(this, "template " + templatename + " not found at " + JS.getFileAndLine());
 696                 } else {
 697                     if (ThreadMessage.suspendThread()) try {
 698                         JS.Function callback = args.length() < 2 ? null : (Function)args.elementAt(1);
 699                         t.apply(b, null, null, callback, 0, t.numUnits());
 700                     } finally {
 701                         ThreadMessage.resumeThread();
 702                     }
 703                 }
 704
 705             // apply a list of properties
 706             } else if (args.elementAt(0) instanceof JS && !(args.elementAt(0) instanceof Box)) {
 707                 JS s = (JS)args.elementAt(0);
 708                 Object[] keys = s.keys();
 709                 for(int j=0; j<keys.length; j++) b.put(keys[j].toString(), s);
 710             }
 711
 712             return b;
 713         }
 714     }
 715
 716 }
 717
 718
 719