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;
95 static int NOCLIP_FLAG = 0x00000100;
98 // Geometry ////////////////////////////////////////////////////////////////////////////
100 // xwt can be compiled with 16-bit lengths to save memory on small devices
102 //#define MAX_LENGTH Integer.MAX_VALUE
103 //#define MIN_LENGTH Integer.MIN_VALUE
105 // always correct (set directly by user)
106 public LENGTH minwidth = 0;
107 public LENGTH minheight = 0;
108 public LENGTH maxwidth = MAX_LENGTH;
109 public LENGTH maxheight = MAX_LENGTH;
110 private LENGTH hpad = 0;
111 private LENGTH vpad = 0;
112 private String text = null;
113 private Res font = null;
114 private int fontsize = 10;
115 private LENGTH textwidth = 0;
116 private LENGTH textheight = 0;
118 // FEATURE: use shorts
119 private int rows = 1;
120 private int cols = 0;
121 private int rowspan = 1;
122 private int colspan = 1;
124 // computed during reflow
127 public LENGTH width = 0;
128 public LENGTH height = 0;
129 private int row = 0; // FEATURE use a short
130 private int col = 0; // FEATURE use a short
131 private LENGTH contentwidth = 0; // == max(minwidth, textwidth+pad, sum(child.contentwidth) + pad)
132 private LENGTH contentheight = 0;
135 // Rendering Properties ///////////////////////////////////////////////////////////
137 private VectorGraphics.VectorPath path = null;
138 //private SVG.Paint fill = null;
139 //private SVG.Paint stroke = null;
141 public Picture image; // will disappear
142 private int fillcolor = 0x00000000; // will become SVG.Paint
143 private int strokecolor = 0xFF000000; // will become SVG.Paint
145 private String cursor = null; // the cursor for this box
148 // Instance Methods /////////////////////////////////////////////////////////////////////
150 /** Adds the intersection of (x,y,w,h) and the node's current actual geometry to the Surface's dirty list */
151 public final void dirty() {
152 if ((flags & NOCLIP_FLAG) != 0 && parent != null) parent.dirty();
153 else dirty(0, 0, width, height);
155 public final void dirty(int x, int y, int w, int h) {
156 for(Box cur = this; cur != null; cur = cur.parent) {
157 if ((flags & NOCLIP_FLAG) == 0) {
158 w = min(x + w, cur.width) - max(x, 0);
159 h = min(y + h, cur.height) - max(y, 0);
163 if (w <= 0 || h <= 0) return;
164 if (cur.parent == null && cur.surface != null) cur.surface.dirty(x, y, w, h);
171 * Given an old and new mouse position, this will update <tt>mouseinside</tt> and check
172 * to see if this node requires any Enter, Leave, or Move notifications.
174 * @param forceleave set to true by the box's parent if the mouse is inside an older
175 * sibling, which is covering up this box.
177 void Move(int oldmousex, int oldmousey, int mousex, int mousey) { Move(oldmousex, oldmousey, mousex, mousey, false); }
178 void Move(int oldmousex, int oldmousey, int mousex, int mousey, boolean forceleave) {
180 boolean wasinside = (flags & MOUSEINSIDE_FLAG) != 0;
181 boolean isinside = !((flags & INVISIBLE_FLAG) != 0) && inside(mousex, mousey) && !forceleave;
182 if (isinside) flags |= MOUSEINSIDE_FLAG; else flags &= ~MOUSEINSIDE_FLAG;
184 if (!wasinside && !isinside) return;
186 if (!wasinside && isinside && get("Enter", Trap.class) != null) put("Enter", Boolean.TRUE);
187 else if (wasinside && !isinside && get("Leave", Trap.class) != null) put("Leave", Boolean.TRUE);
188 else if (wasinside && isinside && (mousex != oldmousex || mousey != oldmousey) && get("Move", Trap.class) != null)
189 put("Move", Boolean.TRUE);
191 if (isinside && cursor != null) getRoot().cursor = cursor;
193 // if the mouse has moved into our padding region, it is considered 'outside' all our children
194 if (!(mousex >= hpad && mousey >= vpad && mousex < width - hpad && mousey < height + vpad)) forceleave = true;
196 for(Box b = getChild(numChildren() - 1); b != null; b = b.prevSibling()) {
197 b.Move(oldmousex - b.x, oldmousey - b.y, mousex - b.x, mousey - b.y, forceleave);
198 if (b.inside(mousex - b.x, mousey - b.y)) forceleave = true;
203 // Reflow ////////////////////////////////////////////////////////////////////////////////////////
205 void reflow() { reflow(width, height); }
206 void reflow(int new_width, int new_height) {
208 if (Surface.abort) return;
209 resize(x, y, new_width, new_height);
212 /** Checks if the Box's size has changed, dirties it if necessary, and makes sure childrens' sizes are up to date */
214 if (!needs_reflow) return;
215 if (numChildren() == 0) {
216 contentwidth = max(textwidth + 2 * hpad, minwidth);
217 contentheight = max(textheight + 2 * vpad, minheight);
219 contentwidth = max(contentwidth, path.boundingBoxWidth());
220 contentheight = max(contentheight, path.boundingBoxHeight());
225 // --- Phase 0 ----------------------------------------------------------------------
227 for(Box child = getChild(0); child != null; child = child.nextSibling()) {
228 if (((flags & FONT_CHANGED_FLAG) != 0) && child.font == null) {
229 child.flags |= FONT_CHANGED_FLAG;
230 child.needs_reflow = true;
233 if (Surface.abort) { MARK_FOR_REFLOW_this; return; }
235 flags &= ~FONT_CHANGED_FLAG;
237 // --- Phase 1 ----------------------------------------------------------------------
238 // assign children to their row/column positions (assuming constrained columns)
239 if ((rows == 0 && cols == 0) || (rows != 0 && cols != 0)) throw new Error("rows == " + rows + " cols == " + cols);
240 //#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
242 int[] numRowsInCol = new int[cols]; // the number of cells occupied in each column
243 Box child = getChild(0);
244 for(; child != null && (((child.flags & ABSOLUTE_FLAG) != 0) || ((child.flags & INVISIBLE_FLAG) != 0)); child = child.nextSibling());
245 OUTER: for(int row=0; child != null; row++) {
246 for(int col=0; child != null && col < cols;) {
247 INNER: while(true) { // scan across the row, looking for an unoccupied gap at least as wide as the child
248 while(col < cols && numRowsInCol[col] > row) col++;
249 for(int i=col; i < cols && i < col + min(cols, child.colspan); i++)
250 if (numRowsInCol[col] > row) { col = i + 1; continue INNER; }
253 if (col + min(cols, child.colspan) > cols) break;
254 for(int i=col; i < col + min(cols, child.colspan); i++) numRowsInCol[i] += child.rowspan;
257 col += min(cols, child.colspan);
258 child = child.nextSibling();
259 for(; child != null && (((child.flags & ABSOLUTE_FLAG) != 0) || ((child.flags & INVISIBLE_FLAG) != 0)); child = child.nextSibling());
265 // --- Phase 2 ----------------------------------------------------------------------
266 // compute the min/max sizes of the columns and rows and set our contentwidth
267 //#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
268 contentwidth = 2 * hpad;
271 for(Box child = getChild(0); child != null; child = child.nextSibling())
272 numCols = max(numCols, child.col + child.colspan);
273 LENGTH[] colWidth = new LENGTH[numCols];
274 for(Box child = getChild(0); child != null; child = child.nextSibling())
275 if (!(((child.flags & ABSOLUTE_FLAG) != 0) || ((child.flags & INVISIBLE_FLAG) != 0)))
276 colWidth[child.col] = max(colWidth[child.col], child.contentwidth / child.colspan);
277 for(int col=0; col<numCols; col++) contentwidth += colWidth[col];
278 contentwidth = max(textwidth + 2 * hpad, contentwidth);
279 contentwidth = bound(minwidth, contentwidth, maxwidth);
281 contentwidth = max(contentwidth, path.boundingBoxWidth());
282 contentheight = max(contentheight, path.boundingBoxHeight());
288 private void resize(LENGTH x, LENGTH y, LENGTH width, LENGTH height) {
290 // --- Phase 1 ----------------------------------------------------------------------
291 // run PosChange/SizeChange, dirty as needed
292 if (x != this.x || y != this.y || width != this.width || height != this.height) {
293 (parent == null ? this : parent).dirty(this.x, this.y, this.width, this.height);
294 boolean sizechange = false, poschange = false;
295 if ((this.width != width || this.height != height) && get("SizeChange", Trap.class) != null) sizechange = true;
296 if ((this.x != x || this.y != y) && get("PosChange", Trap.class) != null) poschange = true;
297 this.width = width; this.height = height; this.x = x; this.y = y;
299 if (sizechange || poschange)
300 if (sizePosChangesSinceLastRender == 500) {
301 if (Log.on) Log.logJS(this, "Warning, more than 500 SizeChange/PosChange traps triggered since last complete render");
303 sizePosChangesSinceLastRender++;
304 try { if (sizechange) put("SizeChange", Boolean.TRUE); } catch (Exception e) { Log.log(this, e); }
305 try { if (poschange) put("PosChange", Boolean.TRUE); } catch (Exception e) { Log.log(this, e); }
306 Surface.abort = true;
312 // --- short circuit ----------------------------------------------------------------
313 if (!needs_reflow) return;
314 needs_reflow = false;
315 if (numChildren() == 0) return;
317 // --- Phase 2 ----------------------------------------------------------------------
318 // compute the min/max sizes of the columns and rows and set initial width/height to minimums
320 //#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
323 for(Box child = getChild(0); child != null; child = child.nextSibling())
324 numCols = max(numCols, child.col + child.colspan);
325 LENGTH[] colWidth = new LENGTH[numCols];
326 LENGTH[] colMaxWidth = new LENGTH[numCols];
327 int marginWidth = width;
328 for(int i=0; i<colMaxWidth.length; i++) colMaxWidth[i] = -1;
331 for(Box child = getChild(0); child != null; child = child.nextSibling()) {
332 if (((child.flags & ABSOLUTE_FLAG) != 0) || ((child.flags & INVISIBLE_FLAG) != 0)) continue;
333 //#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
334 colWidth[child.col] = max(colWidth[child.col], child.contentwidth / child.colspan);
335 for(int i=child.col; i<child.col+child.colspan && i<numCols; i++)
336 colMaxWidth[i] = max(colMaxWidth[i], (((child.flags & HSHRINK_FLAG) != 0) ? child.contentwidth : child.maxwidth) / child.colspan);
340 //#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
341 for(int i=0; i<colMaxWidth.length; i++) if (colMaxWidth[i] == -1) colMaxWidth[i] = MAX_LENGTH;
343 for(int i=0; i<colMaxWidth.length; i++) {
344 if (colMaxWidth[i] == MAX_LENGTH) { marginWidth = 0; break; }
345 marginWidth -= colMaxWidth[i];
346 if (marginWidth < 0) { marginWidth = 0; break; }
351 // --- Phase 3 ----------------------------------------------------------------------
352 // hand out the slack
354 //#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
355 slack = width - 2 * hpad;
356 for(int i=0; i<numCols; i++) slack -= colWidth[i];
357 if (numChildren() > 0)
359 // FEATURE: inefficient
360 int startslack = slack;
361 int increment = max(1, slack / numCols);
362 for(int col=0; col < numCols && slack > 0; col++) {
363 slack += colWidth[col];
364 colWidth[col] = min(colMaxWidth[col], colWidth[col] + increment);
365 slack -= colWidth[col];
367 if (slack == startslack) break;
372 // --- Phase 4 ----------------------------------------------------------------------
373 // assign children's new sizes and positions and recurse
374 for(Box child = getChild(0); child != null; child = child.nextSibling()) {
375 if ((child.flags & INVISIBLE_FLAG) != 0) continue;
376 int child_x = 0, child_y = 0, child_width = 0, child_height = 0;
377 if ((child.flags & ABSOLUTE_FLAG) != 0) {
380 child_width = ((child.flags & HSHRINK_FLAG) != 0) ? child.contentwidth : min(child.maxwidth, width - child.x - hpad);
381 child_height = ((child.flags & VSHRINK_FLAG) != 0) ? child.contentheight : min(child.maxheight, height - child.y - vpad);
384 //#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
385 child_width = 0; for(int i=child.col; i<child.col+child.colspan && i<colWidth.length; i++) child_width += colWidth[i];
386 diff = bound(child.contentwidth, child_width, ((child.flags & HSHRINK_FLAG) != 0) ? child.contentwidth : child.maxwidth) - child_width;
387 child_x = max(hpad, marginWidth / 2); for(int i=0; i<child.col; i++) child_x += colWidth[i];
388 if (diff < 0) child_x += -1 * (diff / 2);
392 child.resize(child_x, child_y, child_width, child_height);
399 // Rendering Pipeline /////////////////////////////////////////////////////////////////////
401 /** Renders self and children within the specified region. All rendering operations are clipped to xIn,yIn,wIn,hIn */
402 void render(int parentx, int parenty, int clipx, int clipy, int clipw, int cliph, PixelBuffer buf, VectorGraphics.Affine a) {
403 if (Surface.abort || (flags & INVISIBLE_FLAG) != 0) return;
404 int globalx = parentx + (parent == null ? 0 : x);
405 int globaly = parenty + (parent == null ? 0 : y);
407 // intersect the x,y,w,h rendering window with ourselves; quit if it's empty
408 if ((flags & NOCLIP_FLAG) == 0) {
409 clipw = min(max(clipx, parent == null ? 0 : globalx) + clipw, (parent == null ? 0 : globalx) + width) - globalx;
410 cliph = min(max(clipy, parent == null ? 0 : globaly) + cliph, (parent == null ? 0 : globaly) + height) - globaly;
411 clipx = max(clipx, parent == null ? 0 : globalx);
412 clipy = max(clipy, parent == null ? 0 : globaly);
414 if (clipw <= 0 || cliph <= 0) return;
416 if ((fillcolor & 0xFF000000) != 0x00000000)
417 buf.fillTrapezoid(clipx, clipx + clipw, clipy, clipx, clipx + clipw, clipy + cliph, fillcolor);
420 if ((flags & TILE_FLAG) != 0) renderTiledImage(globalx, globaly, clipx, clipy, clipw, cliph, buf);
421 else renderStretchedImage(globalx, globaly, clipx, clipy, clipw, cliph, buf);
423 if (text != null && !text.equals(""))
424 renderText(globalx, globaly, clipx, clipy, clipw, cliph, buf);
427 VectorGraphics.RasterPath rp = path.realize(a);
428 if ((strokecolor & 0xff000000) != 0) rp.stroke(buf, 1, strokecolor);
429 if ((fillcolor & 0xff000000) != 0) rp.fill(buf, new VectorGraphics.SingleColorPaint(fillcolor));
432 // now subtract the pad region from the clip region before proceeding
433 if ((flags & NOCLIP_FLAG) == 0) {
434 clipw = min(max(clipx, globalx + hpad) + clipw, globalx + width - hpad) - clipx;
435 cliph = min(max(clipy, globaly + vpad) + cliph, globaly + height - vpad) - clipy;
436 clipx = max(clipx, globalx + hpad);
437 clipy = max(clipy, globaly + vpad);
440 for(Box b = getChild(0); b != null; b = b.nextSibling()) {
441 a.translate(b.x, b.y);
442 b.render(globalx, globaly, clipx, clipy, clipw, cliph, buf, a);
443 a.translate(-1 * b.x, -1 * b.y);
447 void renderStretchedImage(int globalx, int globaly, int clipx, int clipy, int clipw, int cliph, PixelBuffer buf) {
449 buf.drawPicture(image, clipx, clipy, clipx + clipw, clipy + cliph, 0, 0, image.getWidth(), image.getHeight());
452 void renderTiledImage(int globalx, int globaly, int x, int y, int w, int h, PixelBuffer buf) {
453 int iw = image.getWidth();
454 int ih = image.getHeight();
455 for(int i=(x - x)/iw; i <= (x + w - x)/iw; i++) {
456 for(int j=(y - y)/ih; j<= (y + h - y)/ih; j++) {
458 int dx1 = max(i * iw + x, x);
459 int dy1 = max(j * ih + y, y);
460 int dx2 = min((i+1) * iw + x, x + w);
461 int dy2 = min((j+1) * ih + y, y + h);
463 int sx1 = dx1 - (i*iw) - x;
464 int sy1 = dy1 - (j*ih) - y;
465 int sx2 = dx2 - (i*iw) - x;
466 int sy2 = dy2 - (j*ih) - y;
468 if (dx2 - dx1 > 0 && dy2 - dy1 > 0 && sx2 - sx1 > 0 && sy2 - sy1 > 0)
469 buf.drawPicture(image, dx1, dy1, dx2, dy2, sx1, sy1, sx2, sy2);
474 void renderText(int x, int y, int clipx, int clipy, int clipw, int cliph, PixelBuffer buf) {
475 for(int i=0; i<text.length(); i++) {
477 char c = text.charAt(i);
478 Glyph g = Glyph.getGlyph(font, fontsize, c);
481 y + vpad + g.max_ascent - g.baseline,
482 x + hpad + g.p.getWidth(),
483 y + vpad + g.max_ascent - g.baseline + g.p.getHeight(),
485 g.p.getWidth(), g.p.getHeight());
491 // Methods to implement org.xwt.js.JS //////////////////////////////////////
493 public Object callMethod(Object method, JS.Array args, boolean checkOnly) throws JS.Exn {
494 if ("indexof".equals(method)) {
495 if (checkOnly) return Boolean.TRUE;
496 if (args.length() != 1 || args.elementAt(0) == null || !(args.elementAt(0) instanceof Box)) return new Integer(-1);
497 Box b = (Box)args.elementAt(0);
498 if (b.parent != Box.this) {
499 if (redirect == null || redirect == Box.this) return new Integer(-1);
500 return redirect.callMethod(method, args, checkOnly);
502 return new Integer(b.getIndexInParent());
507 /** Returns the i_th child */
508 public Object get(int i) {
509 if (redirect == null) return null;
510 if (redirect != this) return redirect.get(i);
511 return i >= numChildren() || i < 0 ? null : getChild(i);
515 * Inserts value as child i; calls remove() if necessary.
516 * This method handles "reinserting" one of your children properly.
517 * INVARIANT: after completion, getChild(min(i, numChildren())) == newnode
518 * WARNING: O(n) runtime, unless i == numChildren()
520 public void put(int i, Object value) {
523 if (value != null && !(value instanceof Box)) {
524 if (Log.on) Log.logJS(this, "attempt to set a numerical property on a box to anything other than a box");
525 } else if (redirect == null) {
526 if (Log.on) Log.logJS(this, "attempt to add/remove children to/from a node with a null redirect");
527 } else if (redirect != this) {
528 Box b = value == null ? (Box)redirect.get(i) : (Box)value;
529 redirect.put(i, value);
531 } else if (value == null) {
532 if (i >= 0 && i < numChildren()) {
538 Box newnode = (Box)value;
540 // check if box being moved is currently target of a redirect
541 for(Box cur = newnode.parent; cur != null; cur = cur.parent)
542 if (cur.redirect == newnode) {
543 if (Log.on) Log.logJS(this, "attempt to move a box that is the target of a redirect");
547 // check for recursive ancestor violation
548 for(Box cur = this; cur != null; cur = cur.parent)
549 if (cur == newnode) {
550 if (Log.on) Log.logJS(this, "attempt to make a node a parent of its own ancestor");
551 if (Log.on) Log.log(this, "box == " + this + " ancestor == " + newnode);
555 if (numKids > 15 && children == null) convert_to_array();
557 newnode.parent = this;
559 if (children == null) {
560 if (firstKid == null) {
562 newnode.prevSibling = newnode;
563 newnode.nextSibling = newnode;
564 } else if (i >= numKids) {
565 newnode.prevSibling = firstKid.prevSibling;
566 newnode.nextSibling = firstKid;
567 firstKid.prevSibling.nextSibling = newnode;
568 firstKid.prevSibling = newnode;
571 for(int j=0; j<i; j++) cur = cur.nextSibling;
572 newnode.prevSibling = cur.prevSibling;
573 newnode.nextSibling = cur;
574 cur.prevSibling.nextSibling = newnode;
575 cur.prevSibling = newnode;
576 if (i == 0) firstKid = newnode;
581 if (i >= children.size()) {
582 newnode.indexInParent = children.size();
583 children.addElement(newnode);
585 children.insertElementAt(newnode, i);
586 for(int j=i; j<children.size(); j++)
587 getChild(j).indexInParent = j;
591 // need both of these in case child was already uncalc'ed
594 MARK_FOR_REFLOW_this;
598 // note that JavaScript box[0] will invoke put(int i), not put(String s)
603 public Object get(Object key, Object key2) { return super.get(key, key2); }
604 public void put(Object key, Object key2, Object val) { super.put(key, key2, val); }
606 public Object get_(Object name) { return super.get(name); }
607 public Object get(Object name) { return get(name, false); }
608 public Object get(Object name_, boolean ignoretraps) {
609 if (name_ instanceof Number) return get(((Number)name_).intValue());
611 if (!(name_ instanceof String)) return null;
612 String name = (String)name_;
613 if (name.equals("")) return null;
615 // See if we're triggering a trap
616 Trap t = ignoretraps ? (Trap)null : (Trap)get(name, Trap.class);
617 if (t != null) return t.perform();
619 // Check for a special handler
620 SpecialBoxProperty gph = (SpecialBoxProperty)SpecialBoxProperty.specialBoxProperties.get(name);
621 if (gph != null) return gph.get(this);
623 Object ret = super.get(name);
624 if (name.startsWith("$") && ret == null)
625 if (Log.on) Log.logJS(this, "WARNING: attempt to access " + name + ", but no child with id=\"" +
626 name.substring(1) + "\" found");
630 public Object[] keys() {
631 Object[] ret = new Object[numChildren()];
632 for(int i=0; i<ret.length; i++) ret[i] = new Integer(i);
636 public void addTrap(Object name, Object value) { Trap.addTrap(this, name, ((JS.CompiledFunction)value)); }
637 public void delTrap(Object name, Object value) { Trap.delTrap(this, name, ((JS.CompiledFunction)value)); }
642 * @param ignoretraps if set, no traps will be triggered (set when 'cascade' reaches the bottom of the trap stack)
643 * @param rp if this put is being performed via a root proxy, rp is the root proxy.
645 public void put_(Object name, Object value) { super.put(name, value); }
646 public void put(Object name, Object value) { put(name, value, false); }
647 public void put(Object name_, Object value, boolean ignoretraps) {
648 if (name_ instanceof Number) { put(((Number)name_).intValue(), value); return; }
649 if (!(name_ instanceof String)) { super.put(name_,value); return; }
650 String name = name_.toString();
652 Trap t = (Trap)get(name, Trap.class);
659 // don't want to really cascade down to the box on this one
660 if (name.equals("0")) return;
662 SpecialBoxProperty gph = (SpecialBoxProperty)SpecialBoxProperty.specialBoxProperties.get(name);
663 if (gph != null) { gph.put(name, this, value); return; }
665 super.put(name, value);
669 // Tree Manipulation /////////////////////////////////////////////////////////////////////
671 /** The parent of this node */
672 private Box parent = null;
674 // Variables used in Vector mode */
675 /** INVARIANT: if (parent != null) parent.children.elementAt(indexInParent) == this */
676 private int indexInParent;
677 private Vec children = null;
679 // Variables used in linked-list mode
680 private int numKids = 0;
681 private Box nextSibling = null;
682 private Box prevSibling = null;
683 private Box firstKid = null;
685 // when we get more than 15 children, we switch to array-mode
686 private void convert_to_array() {
687 children = new Vec(numKids);
690 children.addElement(cur);
691 cur.indexInParent = children.size() - 1;
692 cur = cur.nextSibling;
693 } while (cur != firstKid);
696 /** remove this node from its parent; INVARIANT: whenever the parent of a node is changed, remove() gets called. */
697 public void remove() {
698 if (parent == null) {
699 if (surface != null) surface.dispose(true);
702 Box oldparent = parent;
703 if (oldparent == null) return;
704 MARK_FOR_REFLOW_this;
706 flags &= ~MOUSEINSIDE_FLAG;
708 if (parent.children != null) {
709 parent.children.removeElementAt(indexInParent);
710 for(int j=indexInParent; j<parent.children.size(); j++)
711 (parent.getChild(j)).indexInParent = j;
714 if (parent.firstKid == this) {
715 if (nextSibling == this) parent.firstKid = null;
716 else parent.firstKid = nextSibling;
719 prevSibling.nextSibling = nextSibling;
720 nextSibling.prevSibling = prevSibling;
726 if (oldparent != null) { Box b = oldparent; MARK_FOR_REFLOW_b; }
728 // note that JavaScript box[0] will invoke put(int i), not put(String s)
729 if (oldparent != null) oldparent.put("0", this);
732 /** returns our next sibling (parent[ourindex + 1]) */
733 public final Box nextSibling() {
734 if (parent == null) return null;
735 if (parent.children == null) {
736 if (nextSibling == parent.firstKid) return null;
739 if (indexInParent >= parent.children.size() - 1) return null;
740 return (Box)parent.children.elementAt(indexInParent + 1);
744 /** returns our next sibling (parent[ourindex + 1]) */
745 public final Box prevSibling() {
746 if (parent == null) return null;
747 if (parent.children == null) {
748 if (this == parent.firstKid) return null;
751 if (indexInParent == 0) return null;
752 return (Box)parent.children.elementAt(indexInParent - 1);
756 /** Returns the parent of this node */
757 public Box getParent() { return parent; }
759 /** Returns ith child */
760 public Box getChild(int i) {
761 if (children == null) {
762 if (firstKid == null) return null;
763 if (i >= numKids) return null;
764 if (i == numKids - 1) return firstKid.prevSibling;
766 for(int j=0; j<i; j++) cur = cur.nextSibling;
769 if (i >= children.size() || i < 0) return null;
770 return (Box)children.elementAt(i);
774 /** Returns the number of children */
775 public int numChildren() {
776 if (children == null) {
777 if (firstKid == null) return 0;
779 for(Box cur = firstKid.nextSibling; cur != firstKid; i++) cur = cur.nextSibling;
782 return children.size();
786 /** Returns our index in our parent */
787 public int getIndexInParent() {
788 if (parent == null) return 0;
789 if (parent.children == null) {
791 for(Box cur = this; cur != parent.firstKid; i++) cur = cur.prevSibling;
794 return indexInParent;
798 /** returns the root of the surface that this box belongs to */
799 public final Box getRoot() {
800 if (parent == null && surface != null) return this;
801 if (parent == null) return null;
802 return parent.getRoot();
806 // Trivial Helper Methods (should be inlined) /////////////////////////////////////////
808 static final int min(int a, int b) { if (a<b) return a; else return b; }
809 static final double min(double a, double b) { if (a<b) return a; else return b; }
810 static final int max(int a, int b) { if (a>b) return a; else return b; }
811 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; }
812 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; }
813 static final int bound(int a, int b, int c) { if (c < b) return c; if (a > b) return a; return b; }
814 final boolean inside(int x, int y) { return (!((flags & INVISIBLE_FLAG) != 0) && x >= 0 && y >= 0 && x < width && y < height); }
816 /** figures out what box in this subtree of the Box owns the pixel at x,y relitave to the Surface */
817 public static Box whoIs(Box cur, int x, int y) {
819 if (cur.parent != null) throw new Error("whoIs may only be invoked on the root box of a surface");
823 // WARNING: this method is called from the event-queueing
824 // thread -- it may run concurrently with ANY part of XWT, and
825 // is UNSYNCHRONIZED for performance reasons. BE CAREFUL
828 if ((cur.flags & INVISIBLE_FLAG) != 0) return null;
829 if (!cur.inside(x - globalx, y - globaly)) return cur.parent == null ? cur : null;
831 for(int i=cur.numChildren() - 1; i>=0; i--) {
832 Box child = cur.getChild(i);
833 if (child == null) continue; // since this method is unsynchronized, we have to double-check
836 if (!((child.flags & INVISIBLE_FLAG) != 0) && child.inside(x - globalx, y - globaly)) { cur = child; continue OUTER; }
846 * A helper class for properties of Box which require special
849 * To avoid excessive use of String.equals(), the Box.get() and
850 * Box.put() methods employ a Hash keyed on property names that
851 * require special handling. The value stored in the Hash is an
852 * instance of an anonymous subclass of SpecialBoxProperty, which knows
853 * how to handle get()s and put()s for that property name. There
854 * should be one anonymous subclass of SpecialBoxProperty for each
855 * specially-handled property on Box.
857 static class SpecialBoxProperty {
859 SpecialBoxProperty() { }
861 /** stores instances of SpecialBoxProperty; keyed on property name */
862 static Hash specialBoxProperties = new Hash(200, 3);
864 /** this method defines the behavior when the property is get()ed from b */
865 Object get(Box b) { return null; }
867 /** this method defines the behavior when the property is put() to b */
868 void put(Box b, Object value) { }
870 /** this method defines the behavior when the property is put() to b, allows a single SpecialBoxProperty to serve multiple properties */
871 void put(String name, Box b, Object value) { put(b, value); }
874 //#repeat fill/stroke fillcolor/strokecolor
875 specialBoxProperties.put("fill", new SpecialBoxProperty() {
876 public Object get(Box b) {
877 if ((b.fillcolor & 0xFF000000) == 0) return null;
878 String red = Integer.toHexString((b.fillcolor & 0x00FF0000) >> 16);
879 String green = Integer.toHexString((b.fillcolor & 0x0000FF00) >> 8);
880 String blue = Integer.toHexString(b.fillcolor & 0x000000FF);
881 if (red.length() < 2) red = "0" + red;
882 if (blue.length() < 2) blue = "0" + blue;
883 if (green.length() < 2) green = "0" + green;
884 return "#" + red + green + blue;
886 public void put(Box b, Object value) {
887 int newcolor = b.fillcolor;
888 String s = value == null ? null : value.toString();
889 if (value == null) newcolor = 0x00000000;
890 else if (s.length() > 0 && s.charAt(0) == '#')
892 newcolor = 0xFF000000 |
893 (Integer.parseInt(s.substring(1, 3), 16) << 16) |
894 (Integer.parseInt(s.substring(3, 5), 16) << 8) |
895 Integer.parseInt(s.substring(5, 7), 16);
896 } catch (NumberFormatException e) {
897 Log.log(this, "invalid color " + s);
900 else if (org.xwt.translators.SVG.colors.get(s) != null)
901 newcolor = 0xFF000000 | ((Integer)org.xwt.translators.SVG.colors.get(s)).intValue();
902 if (newcolor == b.fillcolor) return;
903 b.fillcolor = newcolor;
909 specialBoxProperties.put("color", new SpecialBoxProperty() {
910 public Object get(Box b) { return b.get("fill"); }
911 public void put(Box b, Object value) { b.put("fill", value); }
914 specialBoxProperties.put("textcolor", new SpecialBoxProperty() {
915 public Object get(Box b) { return b.get("stroke"); }
916 public void put(Box b, Object value) { b.put("stroke", value); }
919 specialBoxProperties.put("text", new SpecialBoxProperty() {
920 public Object get(Box b) { return b.text; }
921 public void put(Box b, Object value) {
922 String t = value == null ? "null" : value.toString();
923 if (t.equals(b.text)) return;
926 if (b.textwidth != 0 || b.textheight != 0) MARK_FOR_REFLOW_b;
927 b.textwidth = b.textheight = 0;
932 for(int i=0; i<b.text.length(); i++) {
933 Glyph g = Glyph.getGlyph(b.font, b.fontsize, b.text.charAt(i));
934 b.textwidth += g.advance;
935 b.textheight = g.max_ascent + g.max_descent;
937 } catch (Exception e) {
944 specialBoxProperties.put("path", new SpecialBoxProperty() {
945 public Object get(Box b) { throw new JS.Exn("cannot read from the path property"); }
946 public void put(Box b, Object value) {
947 String t = value == null ? "null" : value.toString();
948 b.path = value == null ? null : VectorGraphics.parseVectorPath(value.toString());
953 specialBoxProperties.put("font", new SpecialBoxProperty() {
954 public Object get(Box b) { return b.font; }
955 public void put(Box b, Object value) {
956 // FIXME: translate value into a resource if it is a string
957 b.font = value == null ? null : (Res)value;
959 b.flags |= FONT_CHANGED_FLAG;
963 specialBoxProperties.put("fontsize", new SpecialBoxProperty() {
964 public Object get(Box b) { return b.font; }
965 public void put(Box b, Object value) {
966 if (b.fontsize == stoi(value)) return;
967 b.fontsize = stoi(value);
969 b.flags |= FONT_CHANGED_FLAG;
973 specialBoxProperties.put("thisbox", new SpecialBoxProperty() {
974 public Object get(Box b) { return b; }
975 public void put(Box b, Object value) {
976 if (value == null) b.remove();
977 else if (value.equals("window") || value.equals("frame")) Platform.createSurface(b, value.equals("frame"), true);
978 else if (Log.on) Log.log(this, "put invalid value to 'thisbox' property: " + value);
982 specialBoxProperties.put("orient", new SpecialBoxProperty() {
983 public Object get(Box b) {
984 Log.log(this, "warning: the orient property is deprecated");
985 if (b.redirect == null) return "horizontal";
986 else if (b.redirect != b) return get(b.redirect);
987 else if (b.cols == 1) return "vertical";
988 else if (b.rows == 1) return "horizontal";
991 public void put(Box b, Object value) {
992 Log.log(this, "warning: the orient property is deprecated");
993 if (value == null) return;
994 if (b.redirect == null) return;
995 if (b.redirect != b) { put(b.redirect, value); return; }
996 if (value.equals("vertical")) {
997 if (b.rows == 0) return;
998 b.rows = 0; b.cols = 1;
999 } else if (value.equals("horizontal")) {
1000 if (b.cols == 0) return;
1001 b.cols = 0; b.rows = 1;
1003 Log.log(this, "invalid value put to orient property: " + value);
1008 specialBoxProperties.put("static", new SpecialBoxProperty() {
1011 specialBoxProperties.put("shrink", new SpecialBoxProperty() {
1012 public Object get(Box b) { return (((b.flags & HSHRINK_FLAG) != 0) || ((b.flags & VSHRINK_FLAG) != 0)) ? Boolean.TRUE : Boolean.FALSE; }
1013 public void put(Box b, Object value) { b.put("hshrink", value); b.put("vshrink", value); }
1016 //#repeat hshrink/vshrink HSHRINK_FLAG/VSHRINK_FLAG
1017 specialBoxProperties.put("hshrink", new SpecialBoxProperty() {
1018 public Object get(Box b) { return new Boolean((b.flags & HSHRINK_FLAG) != 0); }
1019 public void put(Box b, Object value) {
1020 boolean newshrink = stob(value);
1021 if (((b.flags & HSHRINK_FLAG) != 0) == newshrink) return;
1022 if (newshrink) b.flags |= HSHRINK_FLAG; else b.flags &= ~HSHRINK_FLAG;
1029 specialBoxProperties.put("x", new SpecialBoxProperty() {
1030 public Object get(Box b) {
1031 if (b.surface == null) return new Integer(0);
1032 if ((b.flags & INVISIBLE_FLAG) != 0) return new Integer(0);
1033 return new Integer(b.x);
1035 public void put(Box b, Object value) {
1036 if (!((b.flags & ABSOLUTE_FLAG) != 0)) return;
1037 int x = stoi(value);
1038 if (x == b.x) return;
1041 if (b.parent == null && b.surface != null) b.surface.setLocation();
1048 //#repeat width/height minwidth/minheight maxwidth/maxheight
1049 specialBoxProperties.put("width", new SpecialBoxProperty() {
1050 public Object get(Box b) { return new Integer(b.width); }
1051 public void put(Box b, Object value) {
1052 b.width = stoi(value);
1053 if (b.parent == null && b.surface != null) {
1054 b.surface.setSize();
1057 if (b.minwidth == b.width && b.maxwidth == b.width) return;
1058 b.minwidth = b.maxwidth = b.width;
1064 //#repeat cols/rows rows/cols
1065 specialBoxProperties.put("cols", new SpecialBoxProperty() {
1066 public Object get(Box b) { return new Double(b.cols); }
1067 public void put(Box b, Object value) {
1068 if (b.cols == stoi(value)) return;
1069 b.cols = stoi(value);
1070 if (b.cols == 0 && b.rows == 0) b.rows = 1;
1071 if (b.cols != 0 && b.rows != 0) b.rows = 0;
1076 //#repeat colspan/rowspan
1077 specialBoxProperties.put("colspan", new SpecialBoxProperty() {
1078 public Object get(Box b) { return new Double(b.colspan); }
1079 public void put(Box b, Object value) {
1080 if (b.colspan == stoi(value)) return;
1081 b.colspan = stoi(value);
1087 specialBoxProperties.put("tile", new SpecialBoxProperty() {
1088 public Object get(Box b) { return ((b.flags & TILE_FLAG) != 0) ? Boolean.TRUE : Boolean.FALSE; }
1089 public void put(Box b, Object value) {
1090 if (((b.flags & TILE_FLAG) != 0) == stob(value)) return;
1091 if (stob(value)) b.flags |= TILE_FLAG; else b.flags &= ~TILE_FLAG;
1095 specialBoxProperties.put("noclip", new SpecialBoxProperty() {
1096 public Object get(Box b) { return ((b.flags & NOCLIP_FLAG) != 0) ? Boolean.TRUE : Boolean.FALSE; }
1097 public void put(Box b, Object value) {
1098 if (((b.flags & NOCLIP_FLAG) != 0) == stob(value)) return;
1099 if (stob(value)) b.flags |= NOCLIP_FLAG; else b.flags &= ~NOCLIP_FLAG;
1104 specialBoxProperties.put("invisible", new SpecialBoxProperty() {
1105 public Object get(Box b) {
1106 for (Box cur = b; cur != null; cur = cur.parent) {
1107 if ((cur.flags & INVISIBLE_FLAG) != 0) return Boolean.TRUE; }
1108 return Boolean.FALSE;
1110 public void put(Box b, Object value) {
1111 if (stob(value) == ((b.flags & INVISIBLE_FLAG) != 0)) return;
1112 if (stob(value)) b.flags |= INVISIBLE_FLAG; else b.flags &= ~INVISIBLE_FLAG;
1113 if (b.parent == null) {
1114 if (b.surface != null) b.surface.setInvisible((b.flags & INVISIBLE_FLAG) != 0);
1117 MARK_FOR_REFLOW_b_parent;
1118 b.parent.dirty(b.x, b.y, b.width, b.height);
1122 specialBoxProperties.put("absolute", new SpecialBoxProperty() {
1123 public Object get(Box b) { return ((b.flags & ABSOLUTE_FLAG) != 0) ? Boolean.TRUE : Boolean.FALSE; }
1124 public void put(Box b, Object value) {
1125 if (stob(value) == ((b.flags & ABSOLUTE_FLAG) != 0)) return;
1126 if (stob(value)) b.flags |= ABSOLUTE_FLAG; else b.flags &= ~ABSOLUTE_FLAG;
1127 if ((b.flags & ABSOLUTE_FLAG) != 0) { b.x = 0; b.y = 0; }
1128 if (b.parent != null) MARK_FOR_REFLOW_b_parent;
1131 specialBoxProperties.put("image", new SpecialBoxProperty() {
1133 public Object get(Box b) { return b.image == null ? null : ImageDecoder.imageToNameMap.get(b.image); }
1135 public void put(Box b, Object value) {
1136 //if (image != null) System.out.println("hit");
1137 if (value == null) {
1139 } else if (value instanceof Res) {
1140 b.image = Picture.fromRes((Res)value);
1144 b.minwidth = min(b.maxwidth, max(b.minwidth, b.image == null ? 0 : b.image.getWidth()));
1145 b.minheight = min(b.maxheight, max(b.minheight, b.image == null ? 0 : b.image.getHeight()));
1151 //#repeat globalx/globaly x/y
1152 specialBoxProperties.put("globalx", new SpecialBoxProperty() {
1153 public Object get(Box b) { return new Integer(b.parent == null || b.surface == null ? 0 : b.x); }
1154 public void put(Box b, Object value) {
1155 if (b.surface == null || b.parent == null) return;
1156 b.put("x", new Integer(stoi(value) - stoi(get(b.parent))));
1162 specialBoxProperties.put("cursor", new SpecialBoxProperty() {
1163 public Object get(Box b) { return b.cursor; }
1164 public void put(Box b, Object value) {
1165 b.cursor = (String)value;
1166 if (b.surface == null) return;
1168 // see if we need to update the surface cursor
1169 Surface surface = b.getRoot().surface;
1170 String tempcursor = surface.cursor;
1171 b.Move(surface.mousex, surface.mousey, surface.mousex, surface.mousey);
1172 if (surface.cursor != tempcursor) surface.syncCursor();
1176 //#repeat mousex/mousey x/y
1177 specialBoxProperties.put("mousex", new SpecialBoxProperty() {
1178 public Object get(Box b) {
1179 Surface surface = b.getRoot().surface;
1180 if (surface == null) return new Integer(0);
1181 int mousex = surface.mousex;
1182 for(Box cur = b; cur != null && cur.parent != null; cur = cur.parent) mousex -= cur.x;
1183 return new Integer(mousex);
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 if (b.redirect != b) Log.log(this, "cannot change the redirect of a box once it is set");
1330 else if (value == null) b.redirect = null;
1332 Box b2 = (Box)value;
1333 while(b2 != b && b2 != null) b2 = b2.parent;
1334 if (b2 == null) Log.log(this, "a box's redirect must be one of its descendants");
1335 b.redirect = (Box)value;
1338 public Object get(Box b) {
1339 if (b.redirect == null) return null;
1340 if (b.redirect == b) return Boolean.TRUE;
1341 return get(b.redirect);
1345 // FEATURE: this still isn't totally harmonious; when you createSurface, these aren't checked
1346 specialBoxProperties.put("titlebar", new SpecialBoxProperty() {
1347 public void put(Box b, Object value) {
1348 if (b.surface != null) b.surface.setTitleBarText(value.toString());
1349 b.put_("titlebar", value);
1351 public Object get(Box b) { return b.get_("titlebar"); }
1354 specialBoxProperties.put("icon", new SpecialBoxProperty() {
1357 public void put(Box b, Object value) {
1358 b.put_("icon", value);
1359 if (b.surface == null) return;
1360 Picture pic = ImageDecoder.getPicture(value.toString());
1361 if (pic != null) b.surface.setIcon(pic);
1362 else if (Log.on) Log.log(this, "unable to load icon " + value);
1364 public Object get(Box b) { return b.get_("icon"); }
1370 /** helper that converts a String to a boolean according to JavaScript coercion rules */
1371 public static boolean stob(Object o) {
1372 if (o == null) return false;
1373 return Boolean.TRUE.equals(o) || "true".equals(o);
1376 /** helper that converts a String to an int according to JavaScript coercion rules */
1377 public static int stoi(Object o) {
1378 if (o == null) return 0;
1379 if (o instanceof Integer) return ((Integer)o).intValue();
1382 if (!(o instanceof String)) s = o.toString();
1385 try { return Integer.parseInt(s.indexOf('.') == -1 ? s : s.substring(0, s.indexOf('.'))); }
1386 catch (NumberFormatException e) { return 0; }