1 // Copyright 2002 Adam Megacz, see the COPYING file for licensing [GPL]
4 // **** This file must be preprocessed before compilation ****
6 // RULE: coordinates on non-static methods are ALWAYS relative to the
7 // upper-left hand corner of <tt>this</tt>
9 // FEATURE: reflow before allowing js to read from width/height
10 // FEATURE: fastpath for rows=1/cols=1
11 // FEATURE: reflow starting with a certain child
12 // FEATURE: separate mark_for_reflow and mark_for_resize
18 import org.xwt.util.*;
19 import org.xwt.translators.*;
23 * Encapsulates the data for a single XWT box as well as all layout
28 * This is the real meat of XWT. Part of its monolithic design is for
29 * performance reasons: deep inheritance heirarchies are slow, and
30 * neither javago nor GCJ can inline across class boundaries.
33 * <p>The rendering process consists of three phases; each requires
34 * one DFS pass over the tree</p>
36 * <ol><li> <b>repacking</b>: children of a box are packed into columns
37 * and rows according to their colspan/rowspan attributes and
38 * ordering. Minimum and maximum sizes of columns are computed.
40 * <li> <b>resizing</b>: width/height and x/y positions of children
41 * are assigned. If a PosChange or SizeChange is triggered,
42 * <tt>Surface.abort</tt> will be set and the resizing process will
45 * <li> <b>repainting</b>: children draw their content onto the
49 * The first two passes together are called the <i>reflow</i> phase.
51 * Reflowing is done in a seperate pass since PosChanges and
52 * SizeChanges trigger an Surface.abort; if rendering were done in the same
53 * pass, rendering work done prior to the Surface.abort would be wasted.
55 * The two passes are repack and resize. Together they are known as
56 * reflow. Repacking assigns boxes to the appropriate grid
57 * coordinates within the parents and computes
58 * contentwidth/contentheight. Resize computes actual size and
61 * A note on coordinates: the Box class represents regions
62 * internally as x,y,w,h tuples, even though the PixelBuffer class
63 * uses x1,y1,x2,y2 tuples.
65 public final class Box extends JS.Scope {
67 public Box() { super(null); }
70 // Misc instance data ////////////////////////////////////////////////////////////////
72 static int sizePosChangesSinceLastRender = 0;
75 // Misc instance data ////////////////////////////////////////////////////////////////
77 boolean needs_reflow = true;
78 //#define MARK_FOR_REFLOW_this for(Box b2 = this; b2 != null && !b2.needs_reflow; b2 = b2.parent) b2.needs_reflow = true;
79 //#define MARK_FOR_REFLOW_b for(Box b2 = b; b2 != null && !b2.needs_reflow; b2 = b2.parent) b2.needs_reflow = true;
80 //#define MARK_FOR_REFLOW_b_parent for(Box b2 = b.parent; b2 != null && !b2.needs_reflow; b2 = b2.parent) b2.needs_reflow = true;
83 Surface surface = null; // null on all non-root boxen
85 // Flags ///////////////////////////////////////////////////////////////////////////////
87 static int MOUSEINSIDE_FLAG = 0x00000001;
88 static int INVISIBLE_FLAG = 0x00000002;
89 static int ABSOLUTE_FLAG = 0x00000004;
90 static int HSHRINK_FLAG = 0x00000008;
91 static int VSHRINK_FLAG = 0x00000010;
92 static int TILE_FLAG = 0x00000020;
93 static int FONT_CHANGED_FLAG = 0x00000040; // set when font changes, cleared during repack
94 static int ISROOT_FLAG = 0x00000080;
97 // Geometry ////////////////////////////////////////////////////////////////////////////
99 // xwt can be compiled with 16-bit lengths to save memory on small devices
101 //#define MAX_LENGTH Integer.MAX_VALUE
102 //#define MIN_LENGTH Integer.MIN_VALUE
104 // always correct (set directly by user)
106 LENGTH minheight = 0;
107 LENGTH maxwidth = MAX_LENGTH;
108 LENGTH maxheight = MAX_LENGTH;
109 private LENGTH hpad = 0;
110 private LENGTH vpad = 0;
111 private String text = null;
112 private Res font = null;
113 private int fontsize = 10;
114 private LENGTH textwidth = 0;
115 private LENGTH textheight = 0;
117 // FEATURE: use shorts
118 private int rows = 1;
119 private int cols = 0;
120 private int rowspan = 1;
121 private int colspan = 1;
123 // computed during reflow
126 public LENGTH width = 0;
127 public LENGTH height = 0;
128 private int row = 0; // FEATURE use a short
129 private int col = 0; // FEATURE use a short
130 private LENGTH contentwidth = 0; // == max(minwidth, textwidth+pad, sum(child.contentwidth) + pad)
131 private LENGTH contentheight = 0;
134 // Rendering Properties ///////////////////////////////////////////////////////////
136 //private SVG.VP path = null;
137 //private SVG.Paint fill = null;
138 //private SVG.Paint stroke = null;
140 private Picture image; // will disappear
141 private int fillcolor = 0x00000000; // will become SVG.Paint
142 private int strokecolor = 0xFF000000; // will become SVG.Paint
144 private String cursor = null; // the cursor for this box
147 // Instance Methods /////////////////////////////////////////////////////////////////////
149 /** Adds the intersection of (x,y,w,h) and the node's current actual geometry to the Surface's dirty list */
150 public final void dirty() { dirty(0, 0, width, height); }
151 public final void dirty(int x, int y, int w, int h) {
152 for(Box cur = this; cur != null; cur = cur.parent) {
153 w = min(x + w, cur.width) - max(x, 0);
154 h = min(y + h, cur.height) - max(y, 0);
157 if (w <= 0 || h <= 0) return;
158 if (cur.parent == null && cur.surface != null) cur.surface.dirty(x, y, w, h);
165 * Given an old and new mouse position, this will update <tt>mouseinside</tt> and check
166 * to see if this node requires any Enter, Leave, or Move notifications.
168 * @param forceleave set to true by the box's parent if the mouse is inside an older
169 * sibling, which is covering up this box.
171 void Move(int oldmousex, int oldmousey, int mousex, int mousey) { Move(oldmousex, oldmousey, mousex, mousey, false); }
172 void Move(int oldmousex, int oldmousey, int mousex, int mousey, boolean forceleave) {
174 boolean wasinside = (flags & MOUSEINSIDE_FLAG) != 0;
175 boolean isinside = !((flags & INVISIBLE_FLAG) != 0) && inside(mousex, mousey) && !forceleave;
176 if (isinside) flags |= MOUSEINSIDE_FLAG; else flags &= ~MOUSEINSIDE_FLAG;
178 if (!wasinside && !isinside) return;
180 if (!wasinside && isinside && get("Enter", Trap.class) != null) put("Enter", Boolean.TRUE);
181 else if (wasinside && !isinside && get("Leave", Trap.class) != null) put("Leave", Boolean.TRUE);
182 else if (wasinside && isinside && (mousex != oldmousex || mousey != oldmousey) && get("Move", Trap.class) != null)
183 put("Move", Boolean.TRUE);
185 if (isinside && cursor != null) getRoot().cursor = cursor;
187 // if the mouse has moved into our padding region, it is considered 'outside' all our children
188 if (!(mousex >= hpad && mousey >= vpad && mousex < width - hpad && mousey < height + vpad)) forceleave = true;
190 for(Box b = getChild(numChildren() - 1); b != null; b = b.prevSibling()) {
191 b.Move(oldmousex - b.x, oldmousey - b.y, mousex - b.x, mousey - b.y, forceleave);
192 if (b.inside(mousex - b.x, mousey - b.y)) forceleave = true;
197 // Reflow ////////////////////////////////////////////////////////////////////////////////////////
201 if (Surface.abort) return;
202 resize(x, y, width, height);
205 /** Checks if the Box's size has changed, dirties it if necessary, and makes sure childrens' sizes are up to date */
207 if (!needs_reflow) return;
208 if (numChildren() == 0) {
209 contentwidth = max(textwidth + 2 * hpad, minwidth);
210 contentheight = max(textheight + 2 * vpad, minheight);
214 // --- Phase 0 ----------------------------------------------------------------------
216 for(Box child = getChild(0); child != null; child = child.nextSibling()) {
217 if (((flags & FONT_CHANGED_FLAG) != 0) && child.font == null) {
218 child.flags |= FONT_CHANGED_FLAG;
219 child.needs_reflow = true;
222 if (Surface.abort) { MARK_FOR_REFLOW_this; return; }
224 flags &= ~FONT_CHANGED_FLAG;
226 // --- Phase 1 ----------------------------------------------------------------------
227 // assign children to their row/column positions (assuming constrained columns)
228 if ((rows == 0 && cols == 0) || (rows != 0 && cols != 0)) throw new Error("rows == " + rows + " cols == " + cols);
229 //#repeat x/y y/x width/height col/row row/col cols/rows rows/cols colspan/rowspan rowspan/colspan colWidth/rowHeight numRowsInCol/numColsInRow INNER/INNER2 maxwidth/maxheight minwidth/minheight contentwidth/contentheight colMaxWidth/rowMaxHeight OUTER/OUTER2 INNER/INNER2
231 int[] numRowsInCol = new int[cols]; // the number of cells occupied in each column
232 Box child = getChild(0);
233 for(; child != null && (((child.flags & ABSOLUTE_FLAG) != 0) || ((child.flags & INVISIBLE_FLAG) != 0)); child = child.nextSibling());
234 OUTER: for(int row=0; child != null; row++) {
235 for(int col=0; child != null && col < cols;) {
236 INNER: while(true) { // scan across the row, looking for an unoccupied gap at least as wide as the child
237 while(col < cols && numRowsInCol[col] > row) col++;
238 for(int i=col; i < cols && i < col + min(cols, child.colspan); i++)
239 if (numRowsInCol[col] > row) { col = i + 1; continue INNER; }
242 if (col + min(cols, child.colspan) > cols) break;
243 for(int i=col; i < col + min(cols, child.colspan); i++) numRowsInCol[i] += child.rowspan;
246 col += min(cols, child.colspan);
247 child = child.nextSibling();
248 for(; child != null && (((child.flags & ABSOLUTE_FLAG) != 0) || ((child.flags & INVISIBLE_FLAG) != 0)); child = child.nextSibling());
254 // --- Phase 2 ----------------------------------------------------------------------
255 // compute the min/max sizes of the columns and rows and set our contentwidth
256 //#repeat x/y y/x width/height col/row cols/rows colspan/rowspan colWidth/rowHeight maxwidth/maxheight minwidth/minheight contentwidth/contentheight colMaxWidth/rowMaxHeight numCols/numRows hpad/vpad
257 contentwidth = 2 * hpad;
260 for(Box child = getChild(0); child != null; child = child.nextSibling())
261 numCols = max(numCols, child.col + child.colspan);
262 LENGTH[] colWidth = new LENGTH[numCols];
263 for(Box child = getChild(0); child != null; child = child.nextSibling())
264 if (!(((child.flags & ABSOLUTE_FLAG) != 0) || ((child.flags & INVISIBLE_FLAG) != 0)))
265 colWidth[child.col] = max(colWidth[child.col], child.contentwidth / child.colspan);
266 for(int col=0; col<numCols; col++) contentwidth += colWidth[col];
267 contentwidth = max(textwidth + 2 * hpad, contentwidth);
268 contentwidth = bound(minwidth, contentwidth, maxwidth);
273 void resize(LENGTH x, LENGTH y, LENGTH width, LENGTH height) {
275 // --- Phase 1 ----------------------------------------------------------------------
276 // run PosChange/SizeChange, dirty as needed
277 if (x != this.x || y != this.y || width != this.width || height != this.height) {
278 (parent == null ? this : parent).dirty(this.x, this.y, this.width, this.height);
279 boolean sizechange = false, poschange = false;
280 if ((this.width != width || this.height != height) && get("SizeChange", Trap.class) != null) sizechange = true;
281 if ((this.x != x || this.y != y) && get("PosChange", Trap.class) != null) poschange = true;
282 this.width = width; this.height = height; this.x = x; this.y = y;
284 if (sizechange || poschange)
285 if (sizePosChangesSinceLastRender == 500) {
286 if (Log.on) Log.logJS(this, "Warning, more than 500 SizeChange/PosChange traps triggered since last complete render");
288 sizePosChangesSinceLastRender++;
289 if (sizechange) put("SizeChange", Boolean.TRUE);
290 if (poschange) put("PosChange", Boolean.TRUE);
291 Surface.abort = true;
297 // --- short circuit ----------------------------------------------------------------
298 if (!needs_reflow) return;
299 needs_reflow = false;
300 if (numChildren() == 0) return;
302 // --- Phase 2 ----------------------------------------------------------------------
303 // compute the min/max sizes of the columns and rows and set initial width/height to minimums
305 //#repeat x/y y/x width/height col/row cols/rows colspan/rowspan colWidth/rowHeight maxwidth/maxheight minwidth/minheight contentwidth/contentheight colMaxWidth/rowMaxHeight marginWidth/marginHeight numCols/numRows
308 for(Box child = getChild(0); child != null; child = child.nextSibling())
309 numCols = max(numCols, child.col + child.colspan);
310 LENGTH[] colWidth = new LENGTH[numCols];
311 LENGTH[] colMaxWidth = new LENGTH[numCols];
312 int marginWidth = width;
313 for(int i=0; i<colMaxWidth.length; i++) colMaxWidth[i] = -1;
316 for(Box child = getChild(0); child != null; child = child.nextSibling()) {
317 if (((child.flags & ABSOLUTE_FLAG) != 0) || ((child.flags & INVISIBLE_FLAG) != 0)) continue;
318 //#repeat x/y y/x width/height col/row cols/rows colspan/rowspan colWidth/rowHeight maxwidth/maxheight minwidth/minheight contentwidth/contentheight colMaxWidth/rowMaxHeight HSHRINK_FLAG/VSHRINK_FLAG numCols/numRows
319 colWidth[child.col] = max(colWidth[child.col], child.contentwidth / child.colspan);
320 for(int i=child.col; i<child.col+child.colspan && i<numCols; i++)
321 colMaxWidth[i] = max(colMaxWidth[i], (((child.flags & HSHRINK_FLAG) != 0) ? child.contentwidth : child.maxwidth) / child.colspan);
325 //#repeat x/y y/x width/height col/row cols/rows colspan/rowspan colWidth/rowHeight maxwidth/maxheight minwidth/minheight contentwidth/contentheight colMaxWidth/rowMaxHeight marginWidth/marginHeight
326 for(int i=0; i<colMaxWidth.length; i++) if (colMaxWidth[i] == -1) colMaxWidth[i] = MAX_LENGTH;
328 for(int i=0; i<colMaxWidth.length; i++) {
329 if (colMaxWidth[i] == MAX_LENGTH) { marginWidth = 0; break; }
330 marginWidth -= colMaxWidth[i];
331 if (marginWidth < 0) { marginWidth = 0; break; }
336 // --- Phase 3 ----------------------------------------------------------------------
337 // hand out the slack
339 //#repeat x/y y/x width/height col/row cols/rows colspan/rowspan colWidth/rowHeight maxwidth/maxheight minwidth/minheight contentwidth/contentheight colMaxWidth/rowMaxHeight numCols/numRows hpad/vpad
340 slack = width - 2 * hpad;
341 for(int i=0; i<numCols; i++) slack -= colWidth[i];
342 if (numChildren() > 0)
344 // FEATURE: inefficient
345 int startslack = slack;
346 int increment = max(1, slack / numCols);
347 for(int col=0; col < numCols && slack > 0; col++) {
348 slack += colWidth[col];
349 colWidth[col] = min(colMaxWidth[col], colWidth[col] + increment);
350 slack -= colWidth[col];
352 if (slack == startslack) break;
357 // --- Phase 4 ----------------------------------------------------------------------
358 // assign children's new sizes and positions and recurse
359 for(Box child = getChild(0); child != null; child = child.nextSibling()) {
360 if ((child.flags & INVISIBLE_FLAG) != 0) continue;
361 int child_x = 0, child_y = 0, child_width = 0, child_height = 0;
362 if ((child.flags & ABSOLUTE_FLAG) != 0) {
365 child_width = ((child.flags & HSHRINK_FLAG) != 0) ? child.contentwidth : min(child.maxwidth, width - child.x - hpad);
366 child_height = ((child.flags & VSHRINK_FLAG) != 0) ? child.contentheight : min(child.maxheight, height - child.y - vpad);
369 //#repeat x/y y/x width/height col/row cols/rows colspan/rowspan colWidth/rowHeight maxwidth/maxheight minwidth/minheight contentwidth/contentheight colMaxWidth/rowMaxHeight HSHRINK_FLAG/VSHRINK_FLAG marginWidth/marginHeight hpad/vpad child_x/child_y child_width/child_height
370 child_width = 0; for(int i=child.col; i<child.col+child.colspan && i<colWidth.length; i++) child_width += colWidth[i];
371 diff = bound(child.contentwidth, child_width, ((child.flags & HSHRINK_FLAG) != 0) ? child.contentwidth : child.maxwidth) - child_width;
372 child_x = max(hpad, marginWidth / 2); for(int i=0; i<child.col; i++) child_x += colWidth[i];
373 if (diff < 0) child_x += -1 * (diff / 2);
377 child.resize(child_x, child_y, child_width, child_height);
384 // Rendering Pipeline /////////////////////////////////////////////////////////////////////
386 /** Renders self and children within the specified region. All rendering operations are clipped to xIn,yIn,wIn,hIn */
387 void render(int parentx, int parenty, int clipx, int clipy, int clipw, int cliph, PixelBuffer buf) {
388 if (Surface.abort || (flags & INVISIBLE_FLAG) != 0) return;
389 int globalx = parentx + (parent == null ? 0 : x);
390 int globaly = parenty + (parent == null ? 0 : y);
392 // intersect the x,y,w,h rendering window with ourselves; quit if it's empty
393 clipw = min(max(clipx, parent == null ? 0 : globalx) + clipw,
394 (parent == null ? 0 : globalx) + width) - globalx;
395 cliph = min(max(clipy, parent == null ? 0 : globaly) + cliph,
396 (parent == null ? 0 : globaly) + height) - globaly;
397 clipx = max(clipx, parent == null ? 0 : globalx);
398 clipy = max(clipy, parent == null ? 0 : globaly);
399 if (clipw <= 0 || cliph <= 0) return;
401 if ((fillcolor & 0xFF000000) != 0x00000000 || parent == null)
402 buf.fillRect(clipx, clipy, clipx + clipw, clipy + cliph,
403 (fillcolor & 0xFF000000) != 0 ? fillcolor : 0xFF777777);
406 if ((flags & TILE_FLAG) != 0) renderTiledImage(globalx, globaly, clipx, clipy, clipw, cliph, buf);
407 else renderStretchedImage(globalx, globaly, clipx, clipy, clipw, cliph, buf);
409 if (text != null && !text.equals(""))
410 renderText(globalx, globaly, clipx, clipy, clipw, cliph, buf);
412 // now subtract the pad region from the clip region before proceeding
413 clipw = min(max(clipx, globalx + hpad) + clipw, globalx + width - hpad) - clipx;
414 cliph = min(max(clipy, globaly + vpad) + cliph, globaly + height - vpad) - clipy;
415 clipx = max(clipx, globalx + hpad);
416 clipy = max(clipy, globaly + vpad);
418 for(Box b = getChild(0); b != null; b = b.nextSibling())
419 b.render(globalx, globaly, clipx, clipy, clipw, cliph, buf);
422 void renderStretchedImage(int globalx, int globaly, int clipx, int clipy, int clipw, int cliph, PixelBuffer buf) {
424 buf.drawPicture(image, clipx, clipy, clipx + clipw, clipy + cliph, 0, 0, image.getWidth(), image.getHeight());
427 void renderTiledImage(int globalx, int globaly, int x, int y, int w, int h, PixelBuffer buf) {
428 int iw = image.getWidth();
429 int ih = image.getHeight();
430 for(int i=(x - x)/iw; i <= (x + w - x)/iw; i++) {
431 for(int j=(y - y)/ih; j<= (y + h - y)/ih; j++) {
433 int dx1 = max(i * iw + x, x);
434 int dy1 = max(j * ih + y, y);
435 int dx2 = min((i+1) * iw + x, x + w);
436 int dy2 = min((j+1) * ih + y, y + h);
438 int sx1 = dx1 - (i*iw) - x;
439 int sy1 = dy1 - (j*ih) - y;
440 int sx2 = dx2 - (i*iw) - x;
441 int sy2 = dy2 - (j*ih) - y;
443 if (dx2 - dx1 > 0 && dy2 - dy1 > 0 && sx2 - sx1 > 0 && sy2 - sy1 > 0)
444 buf.drawPicture(image, dx1, dy1, dx2, dy2, sx1, sy1, sx2, sy2);
449 void renderText(int x, int y, int clipx, int clipy, int clipw, int cliph, PixelBuffer buf) {
450 for(int i=0; i<text.length(); i++) {
452 char c = text.charAt(i);
453 Glyph g = Glyph.getGlyph(font, fontsize, c);
456 y + vpad + g.max_ascent - g.baseline,
457 x + hpad + g.p.getWidth(),
458 y + vpad + g.max_ascent - g.baseline + g.p.getHeight(),
460 g.p.getWidth(), g.p.getHeight());
466 // Methods to implement org.xwt.js.JS //////////////////////////////////////
468 public Object callMethod(Object method, JS.Array args, boolean checkOnly) throws JS.Exn {
469 if ("indexof".equals(method)) {
470 if (checkOnly) return Boolean.TRUE;
471 if (args.length() != 1 || args.elementAt(0) == null || !(args.elementAt(0) instanceof Box)) return new Integer(-1);
472 Box b = (Box)args.elementAt(0);
473 if (b.parent != Box.this) {
474 if (redirect == null || redirect == Box.this) return new Integer(-1);
475 return redirect.callMethod(method, args, checkOnly);
477 return new Integer(b.getIndexInParent());
479 } else if ("apply".equals(method)) {
480 if (checkOnly) return Boolean.TRUE;
481 if (args.elementAt(0) instanceof Res) {
482 Res res = (Res)args.elementAt(0);
483 // res = res.addExtension(".xwt");
484 Template t = Template.getTemplate(res);
485 if (ThreadMessage.suspendThread()) try {
486 JS.Callable callback = args.length() < 2 ? null : (Callable)args.elementAt(1);
488 // FIXME!!! needs to be xwt.apply(template, box)
489 t.apply(this, callback, 0, t.numUnits(), null);
491 ThreadMessage.resumeThread();
493 } else if (args.elementAt(0) instanceof String) {
494 String templatename = (String)args.elementAt(0);
496 Template t = Template.getTemplate(null);
498 if (Log.on) Log.logJS(this, "template " + templatename + " not found");
500 if (ThreadMessage.suspendThread()) try {
501 JS.Callable callback = args.length() < 2 ? null : (Callable)args.elementAt(1);
502 // FIXME!!! needs to be xwt.apply(template, box)
503 t.apply(this, callback, 0, t.numUnits(), null);
505 ThreadMessage.resumeThread();
508 } else if (args.elementAt(0) instanceof JS && !(args.elementAt(0) instanceof Box)) {
509 JS s = (JS)args.elementAt(0);
510 Object[] keys = s.keys();
511 for(int j=0; j<keys.length; j++) put(keys[j].toString(), s.get(keys[j]));
518 /** Returns the i_th child */
519 public Object get(int i) {
520 if (redirect == null) return null;
521 if (redirect != this) return redirect.get(i);
522 return i >= numChildren() || i < 0 ? null : getChild(i);
526 * Inserts value as child i; calls remove() if necessary.
527 * This method handles "reinserting" one of your children properly.
528 * INVARIANT: after completion, getChild(min(i, numChildren())) == newnode
529 * WARNING: O(n) runtime, unless i == numChildren()
531 public void put(int i, Object value) {
534 if (value != null && !(value instanceof Box)) {
535 if (Log.on) Log.logJS(this, "attempt to set a numerical property on a box to anything other than a box");
536 } else if (redirect == null) {
537 if (Log.on) Log.logJS(this, "attempt to add/remove children to/from a node with a null redirect");
538 } else if (redirect != this) {
539 Box b = value == null ? (Box)redirect.get(i) : (Box)value;
540 redirect.put(i, value);
542 } else if (value == null) {
543 if (i >= 0 && i < numChildren()) {
549 Box newnode = (Box)value;
551 // check if box being moved is currently target of a redirect
552 for(Box cur = newnode.parent; cur != null; cur = cur.parent)
553 if (cur.redirect == newnode) {
554 if (Log.on) Log.logJS(this, "attempt to move a box that is the target of a redirect");
558 // check for recursive ancestor violation
559 for(Box cur = this; cur != null; cur = cur.parent)
560 if (cur == newnode) {
561 if (Log.on) Log.logJS(this, "attempt to make a node a parent of its own ancestor");
562 if (Log.on) Log.log(this, "box == " + this + " ancestor == " + newnode);
566 if (numKids > 15 && children == null) convert_to_array();
568 newnode.parent = this;
570 if (children == null) {
571 if (firstKid == null) {
573 newnode.prevSibling = newnode;
574 newnode.nextSibling = newnode;
575 } else if (i >= numKids) {
576 newnode.prevSibling = firstKid.prevSibling;
577 newnode.nextSibling = firstKid;
578 firstKid.prevSibling.nextSibling = newnode;
579 firstKid.prevSibling = newnode;
582 for(int j=0; j<i; j++) cur = cur.nextSibling;
583 newnode.prevSibling = cur.prevSibling;
584 newnode.nextSibling = cur;
585 cur.prevSibling.nextSibling = newnode;
586 cur.prevSibling = newnode;
587 if (i == 0) firstKid = newnode;
592 if (i >= children.size()) {
593 newnode.indexInParent = children.size();
594 children.addElement(newnode);
596 children.insertElementAt(newnode, i);
597 for(int j=i; j<children.size(); j++)
598 getChild(j).indexInParent = j;
602 // need both of these in case child was already uncalc'ed
605 MARK_FOR_REFLOW_this;
609 // note that JavaScript box[0] will invoke put(int i), not put(String s)
614 public Object get(Object key, Object key2) { return super.get(key, key2); }
615 public void put(Object key, Object key2, Object val) { super.put(key, key2, val); }
617 public Object get_(Object name) { return super.get(name); }
618 public Object get(Object name) { return get(name, false); }
619 public Object get(Object name_, boolean ignoretraps) {
620 if (name_ instanceof Number) return get(((Number)name_).intValue());
622 if (!(name_ instanceof String)) return null;
623 String name = (String)name_;
624 if (name.equals("")) return null;
626 // See if we're triggering a trap
627 Trap t = ignoretraps ? (Trap)null : (Trap)get(name, Trap.class);
628 if (t != null) return t.perform();
630 // Check for a special handler
631 SpecialBoxProperty gph = (SpecialBoxProperty)SpecialBoxProperty.specialBoxProperties.get(name);
632 if (gph != null) return gph.get(this);
634 Object ret = super.get(name);
635 if (name.startsWith("$") && ret == null)
636 if (Log.on) Log.logJS(this, "WARNING: attempt to access " + name + ", but no child with id=\"" +
637 name.substring(1) + "\" found");
641 public Object[] keys() {
642 Object[] ret = new Object[numChildren()];
643 for(int i=0; i<ret.length; i++) ret[i] = new Integer(i);
647 public void addTrap(Object name, Object value) { Trap.addTrap(this, name, ((JS.CompiledFunction)value)); }
648 public void delTrap(Object name, Object value) { Trap.delTrap(this, name, ((JS.CompiledFunction)value)); }
653 * @param ignoretraps if set, no traps will be triggered (set when 'cascade' reaches the bottom of the trap stack)
654 * @param rp if this put is being performed via a root proxy, rp is the root proxy.
656 public void put_(Object name, Object value) { super.put(name, value); }
657 public void put(Object name, Object value) { put(name, value, false); }
658 public void put(Object name_, Object value, boolean ignoretraps) {
659 if (name_ instanceof Number) { put(((Number)name_).intValue(), value); return; }
660 if (!(name_ instanceof String)) { super.put(name_,value); return; }
661 String name = name_.toString();
663 Trap t = (Trap)get(name, Trap.class);
670 // don't want to really cascade down to the box on this one
671 if (name.equals("0")) return;
673 SpecialBoxProperty gph = (SpecialBoxProperty)SpecialBoxProperty.specialBoxProperties.get(name);
674 if (gph != null) { gph.put(name, this, value); return; }
676 super.put(name, value);
680 // Tree Manipulation /////////////////////////////////////////////////////////////////////
682 /** The parent of this node */
683 private Box parent = null;
685 // Variables used in Vector mode */
686 /** INVARIANT: if (parent != null) parent.children.elementAt(indexInParent) == this */
687 private int indexInParent;
688 private Vec children = null;
690 // Variables used in linked-list mode
691 private int numKids = 0;
692 private Box nextSibling = null;
693 private Box prevSibling = null;
694 private Box firstKid = null;
696 // when we get more than 15 children, we switch to array-mode
697 private void convert_to_array() {
698 children = new Vec(numKids);
701 children.addElement(cur);
702 cur.indexInParent = children.size() - 1;
703 cur = cur.nextSibling;
704 } while (cur != firstKid);
707 /** remove this node from its parent; INVARIANT: whenever the parent of a node is changed, remove() gets called. */
708 public void remove() {
709 if (parent == null) {
710 if (surface != null) surface.dispose(true);
713 Box oldparent = parent;
714 if (oldparent == null) return;
715 MARK_FOR_REFLOW_this;
717 flags &= ~MOUSEINSIDE_FLAG;
719 if (parent.children != null) {
720 parent.children.removeElementAt(indexInParent);
721 for(int j=indexInParent; j<parent.children.size(); j++)
722 (parent.getChild(j)).indexInParent = j;
725 if (parent.firstKid == this) {
726 if (nextSibling == this) parent.firstKid = null;
727 else parent.firstKid = nextSibling;
730 prevSibling.nextSibling = nextSibling;
731 nextSibling.prevSibling = prevSibling;
737 if (oldparent != null) { Box b = oldparent; MARK_FOR_REFLOW_b; }
739 // note that JavaScript box[0] will invoke put(int i), not put(String s)
740 if (oldparent != null) oldparent.put("0", this);
743 /** returns our next sibling (parent[ourindex + 1]) */
744 public final Box nextSibling() {
745 if (parent == null) return null;
746 if (parent.children == null) {
747 if (nextSibling == parent.firstKid) return null;
750 if (indexInParent >= parent.children.size() - 1) return null;
751 return (Box)parent.children.elementAt(indexInParent + 1);
755 /** returns our next sibling (parent[ourindex + 1]) */
756 public final Box prevSibling() {
757 if (parent == null) return null;
758 if (parent.children == null) {
759 if (this == parent.firstKid) return null;
762 if (indexInParent == 0) return null;
763 return (Box)parent.children.elementAt(indexInParent - 1);
767 /** Returns the parent of this node */
768 public Box getParent() { return parent; }
770 /** Returns ith child */
771 public Box getChild(int i) {
772 if (children == null) {
773 if (firstKid == null) return null;
774 if (i >= numKids) return null;
775 if (i == numKids - 1) return firstKid.prevSibling;
777 for(int j=0; j<i; j++) cur = cur.nextSibling;
780 if (i >= children.size() || i < 0) return null;
781 return (Box)children.elementAt(i);
785 /** Returns the number of children */
786 public int numChildren() {
787 if (children == null) {
788 if (firstKid == null) return 0;
790 for(Box cur = firstKid.nextSibling; cur != firstKid; i++) cur = cur.nextSibling;
793 return children.size();
797 /** Returns our index in our parent */
798 public int getIndexInParent() {
799 if (parent == null) return 0;
800 if (parent.children == null) {
802 for(Box cur = this; cur != parent.firstKid; i++) cur = cur.prevSibling;
805 return indexInParent;
809 /** returns the root of the surface that this box belongs to */
810 public final Box getRoot() {
811 if (parent == null && surface != null) return this;
812 if (parent == null) return null;
813 return parent.getRoot();
817 // Trivial Helper Methods (should be inlined) /////////////////////////////////////////
819 static final int min(int a, int b) { if (a<b) return a; else return b; }
820 static final double min(double a, double b) { if (a<b) return a; else return b; }
821 static final int max(int a, int b) { if (a>b) return a; else return b; }
822 static final int min(int a, int b, int c) { if (a<=b && a<=c) return a; else if (b<=c && b<=a) return b; else return c; }
823 static final int max(int a, int b, int c) { if (a>=b && a>=c) return a; else if (b>=c && b>=a) return b; else return c; }
824 static final int bound(int a, int b, int c) { if (c < b) return c; if (a > b) return a; return b; }
825 final boolean inside(int x, int y) { return (!((flags & INVISIBLE_FLAG) != 0) && x >= 0 && y >= 0 && x < width && y < height); }
827 /** figures out what box in this subtree of the Box owns the pixel at x,y relitave to the Surface */
828 public static Box whoIs(Box cur, int x, int y) {
830 if (cur.parent != null) throw new Error("whoIs may only be invoked on the root box of a surface");
834 // WARNING: this method is called from the event-queueing
835 // thread -- it may run concurrently with ANY part of XWT, and
836 // is UNSYNCHRONIZED for performance reasons. BE CAREFUL
839 if ((cur.flags & INVISIBLE_FLAG) != 0) return null;
840 if (!cur.inside(x - globalx, y - globaly)) return cur.parent == null ? cur : null;
842 for(int i=cur.numChildren() - 1; i>=0; i--) {
843 Box child = cur.getChild(i);
844 if (child == null) continue; // since this method is unsynchronized, we have to double-check
847 if (!((child.flags & INVISIBLE_FLAG) != 0) && child.inside(x - globalx, y - globaly)) { cur = child; continue OUTER; }
857 * A helper class for properties of Box which require special
860 * To avoid excessive use of String.equals(), the Box.get() and
861 * Box.put() methods employ a Hash keyed on property names that
862 * require special handling. The value stored in the Hash is an
863 * instance of an anonymous subclass of SpecialBoxProperty, which knows
864 * how to handle get()s and put()s for that property name. There
865 * should be one anonymous subclass of SpecialBoxProperty for each
866 * specially-handled property on Box.
868 static class SpecialBoxProperty {
870 SpecialBoxProperty() { }
872 /** stores instances of SpecialBoxProperty; keyed on property name */
873 static Hash specialBoxProperties = new Hash(200, 3);
875 /** this method defines the behavior when the property is get()ed from b */
876 Object get(Box b) { return null; }
878 /** this method defines the behavior when the property is put() to b */
879 void put(Box b, Object value) { }
881 /** this method defines the behavior when the property is put() to b, allows a single SpecialBoxProperty to serve multiple properties */
882 void put(String name, Box b, Object value) { put(b, value); }
885 //#repeat fillcolor/strokecolor
886 specialBoxProperties.put("fillcolor", new SpecialBoxProperty() {
887 public Object get(Box b) {
888 if ((b.fillcolor & 0xFF000000) == 0) return null;
889 String red = Integer.toHexString((b.fillcolor & 0x00FF0000) >> 16);
890 String green = Integer.toHexString((b.fillcolor & 0x0000FF00) >> 8);
891 String blue = Integer.toHexString(b.fillcolor & 0x000000FF);
892 if (red.length() < 2) red = "0" + red;
893 if (blue.length() < 2) blue = "0" + blue;
894 if (green.length() < 2) green = "0" + green;
895 return "#" + red + green + blue;
897 public void put(Box b, Object value) {
898 int newcolor = b.fillcolor;
899 String s = value == null ? null : value.toString();
900 if (value == null) newcolor = 0x00000000;
901 else if (s.length() > 0 && s.charAt(0) == '#')
903 newcolor = 0xFF000000 |
904 (Integer.parseInt(s.substring(1, 3), 16) << 16) |
905 (Integer.parseInt(s.substring(3, 5), 16) << 8) |
906 Integer.parseInt(s.substring(5, 7), 16);
907 } catch (NumberFormatException e) {
908 Log.log(this, "invalid color " + s);
911 else if (org.xwt.translators.SVG.colors.get(s) != null)
912 newcolor = 0xFF000000 | ((Integer)org.xwt.translators.SVG.colors.get(s)).intValue();
913 if (newcolor == b.fillcolor) return;
914 b.fillcolor = newcolor;
920 specialBoxProperties.put("color", new SpecialBoxProperty() {
921 public Object get(Box b) { return b.get("fillcolor"); }
922 public void put(Box b, Object value) { b.put("fillcolor", value); }
925 specialBoxProperties.put("textcolor", new SpecialBoxProperty() {
926 public Object get(Box b) { return b.get("strokecolor"); }
927 public void put(Box b, Object value) { b.put("strokecolor", value); }
930 specialBoxProperties.put("text", new SpecialBoxProperty() {
931 public Object get(Box b) { return b.text; }
932 public void put(Box b, Object value) {
933 String t = value == null ? "null" : value.toString();
934 if (t.equals(b.text)) return;
937 if (b.textwidth != 0 || b.textheight != 0) MARK_FOR_REFLOW_b;
938 b.textwidth = b.textheight = 0;
943 for(int i=0; i<b.text.length(); i++) {
944 Glyph g = Glyph.getGlyph(b.font, b.fontsize, b.text.charAt(i));
945 b.textwidth += g.advance;
946 b.textheight = g.max_ascent + g.max_descent;
948 } catch (Exception e) {
955 specialBoxProperties.put("font", new SpecialBoxProperty() {
956 public Object get(Box b) { return b.font; }
957 public void put(Box b, Object value) {
958 // FIXME: translate value into a resource if it is a string
959 b.font = value == null ? null : (Res)value;
961 b.flags |= FONT_CHANGED_FLAG;
965 specialBoxProperties.put("fontsize", new SpecialBoxProperty() {
966 public Object get(Box b) { return b.font; }
967 public void put(Box b, Object value) {
968 if (b.fontsize == stoi(value)) return;
969 b.fontsize = stoi(value);
971 b.flags |= FONT_CHANGED_FLAG;
975 specialBoxProperties.put("thisbox", new SpecialBoxProperty() {
976 public Object get(Box b) { return b; }
977 public void put(Box b, Object value) {
978 if (value == null) b.remove();
979 else if (value.equals("window") || value.equals("frame")) Platform.createSurface(b, value.equals("frame"), true);
980 else if (Log.on) Log.log(this, "put invalid value to 'thisbox' property: " + value);
984 specialBoxProperties.put("orient", new SpecialBoxProperty() {
985 public Object get(Box b) {
986 Log.log(this, "warning: the orient property is deprecated");
987 if (b.redirect == null) return "horizontal";
988 else if (b.redirect != b) return get(b.redirect);
989 else if (b.cols == 1) return "vertical";
990 else if (b.rows == 1) return "horizontal";
993 public void put(Box b, Object value) {
994 Log.log(this, "warning: the orient property is deprecated");
995 if (value == null) return;
996 if (b.redirect == null) return;
997 if (b.redirect != b) { put(b.redirect, value); return; }
998 if (value.equals("vertical")) {
999 if (b.rows == 0) return;
1000 b.rows = 0; b.cols = 1;
1001 } else if (value.equals("horizontal")) {
1002 if (b.cols == 0) return;
1003 b.cols = 0; b.rows = 1;
1005 Log.log(this, "invalid value put to orient property: " + value);
1010 specialBoxProperties.put("static", new SpecialBoxProperty() {
1013 specialBoxProperties.put("shrink", new SpecialBoxProperty() {
1014 public Object get(Box b) { return (((b.flags & HSHRINK_FLAG) != 0) || ((b.flags & VSHRINK_FLAG) != 0)) ? Boolean.TRUE : Boolean.FALSE; }
1015 public void put(Box b, Object value) { b.put("hshrink", value); b.put("vshrink", value); }
1018 //#repeat hshrink/vshrink HSHRINK_FLAG/VSHRINK_FLAG
1019 specialBoxProperties.put("hshrink", new SpecialBoxProperty() {
1020 public Object get(Box b) { return new Boolean((b.flags & HSHRINK_FLAG) != 0); }
1021 public void put(Box b, Object value) {
1022 boolean newshrink = stob(value);
1023 if (((b.flags & HSHRINK_FLAG) != 0) == newshrink) return;
1024 if (newshrink) b.flags |= HSHRINK_FLAG; else b.flags &= ~HSHRINK_FLAG;
1031 specialBoxProperties.put("x", new SpecialBoxProperty() {
1032 public Object get(Box b) {
1033 if (b.surface == null) return new Integer(0);
1034 if ((b.flags & INVISIBLE_FLAG) != 0) return new Integer(0);
1035 return new Integer(b.x);
1037 public void put(Box b, Object value) {
1038 if (!((b.flags & ABSOLUTE_FLAG) != 0)) return;
1039 int x = stoi(value);
1040 if (x == b.x) return;
1043 if (b.parent == null && b.surface != null) b.surface.setLocation();
1050 //#repeat width/height minwidth/minheight maxwidth/maxheight
1051 specialBoxProperties.put("width", new SpecialBoxProperty() {
1052 public Object get(Box b) { return new Integer(b.width); }
1053 public void put(Box b, Object value) {
1054 b.width = stoi(value);
1055 if (b.parent == null && b.surface != null) {
1056 b.surface.setSize();
1059 if (b.minwidth == b.width && b.maxwidth == b.width) return;
1060 b.minwidth = b.maxwidth = b.width;
1066 //#repeat cols/rows rows/cols
1067 specialBoxProperties.put("cols", new SpecialBoxProperty() {
1068 public Object get(Box b) { return new Double(b.cols); }
1069 public void put(Box b, Object value) {
1070 if (b.cols == stoi(value)) return;
1071 b.cols = stoi(value);
1072 if (b.cols == 0 && b.rows == 0) b.rows = 1;
1073 if (b.cols != 0 && b.rows != 0) b.rows = 0;
1078 //#repeat colspan/rowspan
1079 specialBoxProperties.put("colspan", new SpecialBoxProperty() {
1080 public Object get(Box b) { return new Double(b.colspan); }
1081 public void put(Box b, Object value) {
1082 if (b.colspan == stoi(value)) return;
1083 b.colspan = stoi(value);
1089 specialBoxProperties.put("tile", new SpecialBoxProperty() {
1090 public Object get(Box b) { return ((b.flags & TILE_FLAG) != 0) ? Boolean.TRUE : Boolean.FALSE; }
1091 public void put(Box b, Object value) {
1092 if (((b.flags & TILE_FLAG) != 0) == stob(value)) return;
1093 if (stob(value)) b.flags |= TILE_FLAG; else b.flags &= ~TILE_FLAG;
1097 specialBoxProperties.put("invisible", new SpecialBoxProperty() {
1098 public Object get(Box b) {
1099 for (Box cur = b; cur != null; cur = cur.parent) {
1100 if ((cur.flags & INVISIBLE_FLAG) != 0) return Boolean.TRUE; }
1101 return Boolean.FALSE;
1103 public void put(Box b, Object value) {
1104 if (stob(value) == ((b.flags & INVISIBLE_FLAG) != 0)) return;
1105 if (stob(value)) b.flags |= INVISIBLE_FLAG; else b.flags &= ~INVISIBLE_FLAG;
1106 if (b.parent == null) {
1107 if (b.surface != null) b.surface.setInvisible((b.flags & INVISIBLE_FLAG) != 0);
1110 MARK_FOR_REFLOW_b_parent;
1111 b.parent.dirty(b.x, b.y, b.width, b.height);
1115 specialBoxProperties.put("absolute", new SpecialBoxProperty() {
1116 public Object get(Box b) { return ((b.flags & ABSOLUTE_FLAG) != 0) ? Boolean.TRUE : Boolean.FALSE; }
1117 public void put(Box b, Object value) {
1118 if (stob(value) == ((b.flags & ABSOLUTE_FLAG) != 0)) return;
1119 if (stob(value)) b.flags |= ABSOLUTE_FLAG; else b.flags &= ~ABSOLUTE_FLAG;
1120 if ((b.flags & ABSOLUTE_FLAG) != 0) { b.x = 0; b.y = 0; }
1121 if (b.parent != null) MARK_FOR_REFLOW_b_parent;
1124 specialBoxProperties.put("image", new SpecialBoxProperty() {
1127 public Object get(Box b) { return b.image == null ? null : ImageDecoder.imageToNameMap.get(b.image); }
1128 public void put(Box b, Object value) {
1129 if ((value == null && b.image == null) ||
1130 (value != null && b.image != null && value.equals(ImageDecoder.imageToNameMap.get(b.image)))) return;
1131 String s = value == null ? null : value.toString();
1132 if (s == null || s.equals("")) b.image = null;
1134 if ((b.image = ImageDecoder.getPicture(s)) == null) {
1135 if (Log.on) Log.logJS(Box.class, "unable to load image " + s);
1137 b.minwidth = b.image.getWidth();
1138 b.minheight = b.image.getHeight();
1147 //#repeat globalx/globaly x/y
1148 specialBoxProperties.put("globalx", new SpecialBoxProperty() {
1149 public Object get(Box b) { return new Integer(b.parent == null || b.surface == null ? 0 : b.x); }
1150 public void put(Box b, Object value) {
1151 if (b.surface == null || b.parent == null) return;
1152 b.put("x", new Integer(stoi(value) - stoi(get(b.parent))));
1158 specialBoxProperties.put("cursor", new SpecialBoxProperty() {
1159 public Object get(Box b) { return b.cursor; }
1160 public void put(Box b, Object value) {
1161 b.cursor = (String)value;
1162 if (b.surface == null) return;
1164 // see if we need to update the surface cursor
1165 Surface surface = b.getRoot().surface;
1166 String tempcursor = surface.cursor;
1167 b.Move(surface.mousex, surface.mousey, surface.mousex, surface.mousey);
1168 if (surface.cursor != tempcursor) surface.syncCursor();
1172 //#repeat mousex/mousey x/y
1173 specialBoxProperties.put("mousex", new SpecialBoxProperty() {
1174 public Object get(Box b) {
1175 Surface surface = b.getRoot().surface;
1176 if (surface == null) return new Integer(0);
1177 int mousex = surface.mousex;
1178 for(Box cur = b; cur != null && cur.parent != null; cur = cur.parent) mousex -= cur.x;
1179 return new Integer(mousex);
1184 specialBoxProperties.put("xwt", new SpecialBoxProperty() {
1185 public Object get(Box b) { return XWT.singleton; }
1188 specialBoxProperties.put("mouseinside", new SpecialBoxProperty() {
1189 public Object get(Box b) {
1190 return ((b.flags & MOUSEINSIDE_FLAG) != 0) ? Boolean.TRUE : Boolean.FALSE; }
1193 specialBoxProperties.put("numchildren", new SpecialBoxProperty() {
1194 public Object get(Box b) {
1195 if (b.redirect == null) return new Integer(0);
1196 if (b.redirect != b) return get(b.redirect);
1197 return new Integer(b.numChildren());
1200 SpecialBoxProperty mouseEventHandler = new SpecialBoxProperty() {
1201 public void put(String name, Box b, Object value) {
1202 Surface surface = b.getRoot().surface;
1203 if (surface == null) return;
1204 int mousex = surface.mousex;
1205 int mousey = surface.mousey;
1206 for(Box c = b.parent; c != null && c.parent != null; c = c.parent) {
1210 for(Box c = b.prevSibling(); c != null; c = c.prevSibling()) {
1211 if (c.inside(mousex - c.x, mousey - c.y)) {
1216 if (b.parent != null) b.parent.put(name, value);
1219 specialBoxProperties.put("Press1", mouseEventHandler);
1220 specialBoxProperties.put("Press2", mouseEventHandler);
1221 specialBoxProperties.put("Press3", mouseEventHandler);
1222 specialBoxProperties.put("Release1", mouseEventHandler);
1223 specialBoxProperties.put("Release2", mouseEventHandler);
1224 specialBoxProperties.put("Release3", mouseEventHandler);
1225 specialBoxProperties.put("Click1", mouseEventHandler);
1226 specialBoxProperties.put("Click2", mouseEventHandler);
1227 specialBoxProperties.put("Click3", mouseEventHandler);
1228 specialBoxProperties.put("DoubleClick1", mouseEventHandler);
1229 specialBoxProperties.put("DoubleClick2", mouseEventHandler);
1230 specialBoxProperties.put("DoubleClick3", mouseEventHandler);
1232 specialBoxProperties.put("root", new SpecialBoxProperty() {
1233 public void put(Box b, Object value) {
1234 if (stob(value)) b.flags |= ISROOT_FLAG;
1235 else b.flags &= ~ISROOT_FLAG;
1237 public Object get(Box b) {
1238 if (b.parent == null || ((b.flags & ISROOT_FLAG) != 0)) return b;
1239 else return get(b.parent);
1242 specialBoxProperties.put("Minimized", new SpecialBoxProperty() {
1243 public Object get(Box b) {
1244 if (b.parent == null && b.surface != null) return b.surface.minimized ? Boolean.TRUE : Boolean.FALSE;
1247 public void put(Box b, Object value) {
1248 if (b.surface == null) return;
1249 boolean val = stob(value);
1250 if (b.parent == null && b.surface.minimized != val) b.surface.setMinimized(val);
1254 specialBoxProperties.put("Maximized", new SpecialBoxProperty() {
1255 public Object get(Box b) {
1256 if (b.parent == null && b.surface != null) return b.surface.maximized ? Boolean.TRUE : Boolean.FALSE;
1259 public void put(Box b, Object value) {
1260 if (b.surface == null) return;
1261 boolean val = stob(value);
1262 if (b.parent == null && b.surface.maximized != val) b.surface.setMaximized(val);
1266 specialBoxProperties.put("toback", new SpecialBoxProperty() {
1267 public void put(Box b, Object value) {
1268 if (b.parent == null && stob(value) && b.surface != null) b.surface.toBack();
1272 specialBoxProperties.put("tofront", new SpecialBoxProperty() {
1273 public void put(Box b, Object value) {
1274 if (b.parent == null && stob(value) && b.surface != null) b.surface.toFront();
1278 specialBoxProperties.put("Close", new SpecialBoxProperty() {
1279 public void put(Box b, Object value) {
1280 if (b.parent == null && b.surface != null) b.surface.dispose(true);
1284 // these are all do-nothings; just to prevent space from getting taken up in the params Hash.
1285 specialBoxProperties.put("KeyPressed", new SpecialBoxProperty());
1286 specialBoxProperties.put("KeyReleased", new SpecialBoxProperty());
1287 specialBoxProperties.put("PosChange", new SpecialBoxProperty());
1288 specialBoxProperties.put("SizeChange", new SpecialBoxProperty());
1291 specialBoxProperties.put("hpad", new SpecialBoxProperty() {
1292 public Object get(Box b) {
1293 if (b.redirect == null) return new Integer(0);
1294 if (b.redirect != b) return get(b.redirect);
1295 return new Integer(b.hpad);
1297 public void put(Box b, Object value) {
1298 if (b.redirect == null) return;
1299 if (b.redirect != b) { put(b.redirect, value); return; }
1300 int newval = stoi(value);
1301 if (newval == b.hpad) return;
1308 //#repeat minwidth/minheight maxwidth/maxheight
1309 specialBoxProperties.put("minwidth", new SpecialBoxProperty() {
1310 public Object get(Box b) { return new Integer(b.minwidth); }
1311 public void put(Box b, Object value) {
1312 if (stoi(value) == b.minwidth) return;
1313 b.minwidth = stoi(value);
1317 specialBoxProperties.put("maxwidth", new SpecialBoxProperty() {
1318 public Object get(Box b) { return new Integer(b.maxwidth); }
1319 public void put(Box b, Object value) {
1320 if (stoi(value) == b.maxwidth) return;
1321 b.maxwidth = stoi(value);
1327 specialBoxProperties.put("redirect", new SpecialBoxProperty() {
1328 public void put(Box b, Object value) { }
1329 public Object get(Box b) {
1330 if (b.redirect == null) return null;
1331 if (b.redirect == b) return Boolean.TRUE;
1332 return get(b.redirect);
1336 // FEATURE: this still isn't totally harmonious; when you createSurface, these aren't checked
1337 specialBoxProperties.put("titlebar", new SpecialBoxProperty() {
1338 public void put(Box b, Object value) {
1339 if (b.surface != null) b.surface.setTitleBarText(value.toString());
1340 b.put_("titlebar", value);
1342 public Object get(Box b) { return b.get_("titlebar"); }
1345 specialBoxProperties.put("icon", new SpecialBoxProperty() {
1348 public void put(Box b, Object value) {
1349 b.put_("icon", value);
1350 if (b.surface == null) return;
1351 Picture pic = ImageDecoder.getPicture(value.toString());
1352 if (pic != null) b.surface.setIcon(pic);
1353 else if (Log.on) Log.log(this, "unable to load icon " + value);
1355 public Object get(Box b) { return b.get_("icon"); }
1361 /** helper that converts a String to a boolean according to JavaScript coercion rules */
1362 public static boolean stob(Object o) {
1363 if (o == null) return false;
1364 return Boolean.TRUE.equals(o) || "true".equals(o);
1367 /** helper that converts a String to an int according to JavaScript coercion rules */
1368 public static int stoi(Object o) {
1369 if (o == null) return 0;
1370 if (o instanceof Integer) return ((Integer)o).intValue();
1373 if (!(o instanceof String)) s = o.toString();
1376 try { return Integer.parseInt(s.indexOf('.') == -1 ? s : s.substring(0, s.indexOf('.'))); }
1377 catch (NumberFormatException e) { return 0; }