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;
142 public Picture image; // will disappear
143 private int fillcolor = 0x00000000; // will become SVG.Paint
144 private int strokecolor = 0xFF000000; // will become SVG.Paint
146 private String cursor = null; // the cursor for this box
149 // Instance Methods /////////////////////////////////////////////////////////////////////
151 /** Adds the intersection of (x,y,w,h) and the node's current actual geometry to the Surface's dirty list */
152 public final void dirty() {
153 if ((flags & NOCLIP_FLAG) != 0 && parent != null) parent.dirty();
154 else dirty(0, 0, width, height);
156 public final void dirty(int x, int y, int w, int h) {
157 for(Box cur = this; cur != null; cur = cur.parent) {
158 if ((flags & NOCLIP_FLAG) == 0) {
159 w = min(x + w, cur.width) - max(x, 0);
160 h = min(y + h, cur.height) - max(y, 0);
164 if (w <= 0 || h <= 0) return;
165 if (cur.parent == null && cur.surface != null) cur.surface.dirty(x, y, w, h);
172 * Given an old and new mouse position, this will update <tt>mouseinside</tt> and check
173 * to see if this node requires any Enter, Leave, or Move notifications.
175 * @param forceleave set to true by the box's parent if the mouse is inside an older
176 * sibling, which is covering up this box.
178 void Move(int oldmousex, int oldmousey, int mousex, int mousey) { Move(oldmousex, oldmousey, mousex, mousey, false); }
179 void Move(int oldmousex, int oldmousey, int mousex, int mousey, boolean forceleave) {
181 boolean wasinside = (flags & MOUSEINSIDE_FLAG) != 0;
182 boolean isinside = !((flags & INVISIBLE_FLAG) != 0) && inside(mousex, mousey) && !forceleave;
183 if (isinside) flags |= MOUSEINSIDE_FLAG; else flags &= ~MOUSEINSIDE_FLAG;
185 if (!wasinside && !isinside) return;
187 if (!wasinside && isinside && get("Enter", Trap.class) != null) put("Enter", Boolean.TRUE);
188 else if (wasinside && !isinside && get("Leave", Trap.class) != null) put("Leave", Boolean.TRUE);
189 else if (wasinside && isinside && (mousex != oldmousex || mousey != oldmousey) && get("Move", Trap.class) != null)
190 put("Move", Boolean.TRUE);
192 if (isinside && cursor != null) getRoot().cursor = cursor;
194 // if the mouse has moved into our padding region, it is considered 'outside' all our children
195 if (!(mousex >= hpad && mousey >= vpad && mousex < width - hpad && mousey < height + vpad)) forceleave = true;
197 for(Box b = getChild(numChildren() - 1); b != null; b = b.prevSibling()) {
198 b.Move(oldmousex - b.x, oldmousey - b.y, mousex - b.x, mousey - b.y, forceleave);
199 if (b.inside(mousex - b.x, mousey - b.y)) forceleave = true;
204 // Reflow ////////////////////////////////////////////////////////////////////////////////////////
206 void reflow() { reflow(width, height); }
207 void reflow(int new_width, int new_height) {
209 if (Surface.abort) return;
210 resize(x, y, new_width, new_height);
213 /** Checks if the Box's size has changed, dirties it if necessary, and makes sure childrens' sizes are up to date */
215 if (!needs_reflow) return;
216 if (numChildren() == 0) {
217 contentwidth = max(textwidth + 2 * hpad, minwidth);
218 contentheight = max(textheight + 2 * vpad, minheight);
220 contentwidth = max(contentwidth, path.boundingBoxWidth());
221 contentheight = max(contentheight, path.boundingBoxHeight());
226 // --- Phase 0 ----------------------------------------------------------------------
228 for(Box child = getChild(0); child != null; child = child.nextSibling()) {
229 if (((flags & FONT_CHANGED_FLAG) != 0) && child.font == null) {
230 child.flags |= FONT_CHANGED_FLAG;
231 child.needs_reflow = true;
234 if (Surface.abort) { MARK_FOR_REFLOW_this; return; }
236 flags &= ~FONT_CHANGED_FLAG;
238 // --- Phase 1 ----------------------------------------------------------------------
239 // assign children to their row/column positions (assuming constrained columns)
240 if ((rows == 0 && cols == 0) || (rows != 0 && cols != 0)) throw new Error("rows == " + rows + " cols == " + cols);
241 //#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
243 int[] numRowsInCol = new int[cols]; // the number of cells occupied in each column
244 Box child = getChild(0);
245 for(; child != null && (((child.flags & ABSOLUTE_FLAG) != 0) || ((child.flags & INVISIBLE_FLAG) != 0)); child = child.nextSibling());
246 OUTER: for(int row=0; child != null; row++) {
247 for(int col=0; child != null && col < cols;) {
248 INNER: while(true) { // scan across the row, looking for an unoccupied gap at least as wide as the child
249 while(col < cols && numRowsInCol[col] > row) col++;
250 for(int i=col; i < cols && i < col + min(cols, child.colspan); i++)
251 if (numRowsInCol[col] > row) { col = i + 1; continue INNER; }
254 if (col + min(cols, child.colspan) > cols) break;
255 for(int i=col; i < col + min(cols, child.colspan); i++) numRowsInCol[i] += child.rowspan;
258 col += min(cols, child.colspan);
259 child = child.nextSibling();
260 for(; child != null && (((child.flags & ABSOLUTE_FLAG) != 0) || ((child.flags & INVISIBLE_FLAG) != 0)); child = child.nextSibling());
266 // --- Phase 2 ----------------------------------------------------------------------
267 // compute the min/max sizes of the columns and rows and set our contentwidth
268 //#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
269 contentwidth = 2 * hpad;
272 for(Box child = getChild(0); child != null; child = child.nextSibling())
273 numCols = max(numCols, child.col + child.colspan);
274 LENGTH[] colWidth = new LENGTH[numCols];
275 for(Box child = getChild(0); child != null; child = child.nextSibling())
276 if (!(((child.flags & ABSOLUTE_FLAG) != 0) || ((child.flags & INVISIBLE_FLAG) != 0)))
277 colWidth[child.col] = max(colWidth[child.col], child.contentwidth / child.colspan);
278 for(int col=0; col<numCols; col++) contentwidth += colWidth[col];
279 contentwidth = max(textwidth + 2 * hpad, contentwidth);
280 contentwidth = bound(minwidth, contentwidth, maxwidth);
282 contentwidth = max(contentwidth, path.boundingBoxWidth());
283 contentheight = max(contentheight, path.boundingBoxHeight());
289 private void resize(LENGTH x, LENGTH y, LENGTH width, LENGTH height) {
291 // --- Phase 1 ----------------------------------------------------------------------
292 // run PosChange/SizeChange, dirty as needed
293 if (x != this.x || y != this.y || width != this.width || height != this.height) {
294 (parent == null ? this : parent).dirty(this.x, this.y, this.width, this.height);
295 boolean sizechange = false, poschange = false;
296 if ((this.width != width || this.height != height) && get("SizeChange", Trap.class) != null) sizechange = true;
297 if ((this.x != x || this.y != y) && get("PosChange", Trap.class) != null) poschange = true;
298 this.width = width; this.height = height; this.x = x; this.y = y;
300 if (sizechange || poschange)
301 if (sizePosChangesSinceLastRender == 500) {
302 if (Log.on) Log.logJS(this, "Warning, more than 500 SizeChange/PosChange traps triggered since last complete render");
304 sizePosChangesSinceLastRender++;
305 try { if (sizechange) put("SizeChange", Boolean.TRUE); } catch (Exception e) { Log.log(this, e); }
306 try { if (poschange) put("PosChange", Boolean.TRUE); } catch (Exception e) { Log.log(this, e); }
307 Surface.abort = true;
313 // --- short circuit ----------------------------------------------------------------
314 if (!needs_reflow) return;
315 needs_reflow = false;
316 if (numChildren() == 0) return;
318 // --- Phase 2 ----------------------------------------------------------------------
319 // compute the min/max sizes of the columns and rows and set initial width/height to minimums
321 //#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
324 for(Box child = getChild(0); child != null; child = child.nextSibling())
325 numCols = max(numCols, child.col + child.colspan);
326 LENGTH[] colWidth = new LENGTH[numCols];
327 LENGTH[] colMaxWidth = new LENGTH[numCols];
328 int marginWidth = width;
329 for(int i=0; i<colMaxWidth.length; i++) colMaxWidth[i] = -1;
332 for(Box child = getChild(0); child != null; child = child.nextSibling()) {
333 if (((child.flags & ABSOLUTE_FLAG) != 0) || ((child.flags & INVISIBLE_FLAG) != 0)) continue;
334 //#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
335 colWidth[child.col] = max(colWidth[child.col], child.contentwidth / child.colspan);
336 for(int i=child.col; i<child.col+child.colspan && i<numCols; i++)
337 colMaxWidth[i] = max(colMaxWidth[i], (((child.flags & HSHRINK_FLAG) != 0) ? child.contentwidth : child.maxwidth) / child.colspan);
341 //#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
342 for(int i=0; i<colMaxWidth.length; i++) if (colMaxWidth[i] == -1) colMaxWidth[i] = MAX_LENGTH;
344 for(int i=0; i<colMaxWidth.length; i++) {
345 if (colMaxWidth[i] == MAX_LENGTH) { marginWidth = 0; break; }
346 marginWidth -= colMaxWidth[i];
347 if (marginWidth < 0) { marginWidth = 0; break; }
352 // --- Phase 3 ----------------------------------------------------------------------
353 // hand out the slack
355 //#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
356 slack = width - 2 * hpad;
357 for(int i=0; i<numCols; i++) slack -= colWidth[i];
358 if (numChildren() > 0)
360 // FEATURE: inefficient
361 int startslack = slack;
362 int increment = max(1, slack / numCols);
363 for(int col=0; col < numCols && slack > 0; col++) {
364 slack += colWidth[col];
365 colWidth[col] = min(colMaxWidth[col], colWidth[col] + increment);
366 slack -= colWidth[col];
368 if (slack == startslack) break;
373 // --- Phase 4 ----------------------------------------------------------------------
374 // assign children's new sizes and positions and recurse
375 for(Box child = getChild(0); child != null; child = child.nextSibling()) {
376 if ((child.flags & INVISIBLE_FLAG) != 0) continue;
377 int child_x = 0, child_y = 0, child_width = 0, child_height = 0;
378 if ((child.flags & ABSOLUTE_FLAG) != 0) {
381 child_width = ((child.flags & HSHRINK_FLAG) != 0) ? child.contentwidth : min(child.maxwidth, width - child.x - hpad);
382 child_height = ((child.flags & VSHRINK_FLAG) != 0) ? child.contentheight : min(child.maxheight, height - child.y - vpad);
385 //#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
386 child_width = 0; for(int i=child.col; i<child.col+child.colspan && i<colWidth.length; i++) child_width += colWidth[i];
387 diff = bound(child.contentwidth, child_width, ((child.flags & HSHRINK_FLAG) != 0) ? child.contentwidth : child.maxwidth) - child_width;
388 child_x = max(hpad, marginWidth / 2); for(int i=0; i<child.col; i++) child_x += colWidth[i];
389 if (diff < 0) child_x += -1 * (diff / 2);
393 child.resize(child_x, child_y, child_width, child_height);
400 // Rendering Pipeline /////////////////////////////////////////////////////////////////////
402 /** Renders self and children within the specified region. All rendering operations are clipped to xIn,yIn,wIn,hIn */
403 void render(int parentx, int parenty, int clipx, int clipy, int clipw, int cliph, PixelBuffer buf, VectorGraphics.Affine a) {
404 if (Surface.abort || (flags & INVISIBLE_FLAG) != 0) return;
405 int globalx = parentx + (parent == null ? 0 : x);
406 int globaly = parenty + (parent == null ? 0 : y);
408 // intersect the x,y,w,h rendering window with ourselves; quit if it's empty
409 if ((flags & NOCLIP_FLAG) == 0) {
410 clipw = min(max(clipx, parent == null ? 0 : globalx) + clipw, (parent == null ? 0 : globalx) + width) - globalx;
411 cliph = min(max(clipy, parent == null ? 0 : globaly) + cliph, (parent == null ? 0 : globaly) + height) - globaly;
412 clipx = max(clipx, parent == null ? 0 : globalx);
413 clipy = max(clipy, parent == null ? 0 : globaly);
415 if (clipw <= 0 || cliph <= 0) return;
417 if ((fillcolor & 0xFF000000) != 0x00000000)
418 buf.fillTrapezoid(clipx, clipx + clipw, clipy, clipx, clipx + clipw, clipy + cliph, fillcolor);
421 if ((flags & TILE_FLAG) != 0) renderTiledImage(globalx, globaly, clipx, clipy, clipw, cliph, buf);
422 else renderStretchedImage(globalx, globaly, clipx, clipy, clipw, cliph, buf);
424 if (text != null && !text.equals(""))
425 renderText(globalx, globaly, clipx, clipy, clipw, cliph, buf);
428 VectorGraphics.RasterPath rp = path.realize(a);
429 if ((strokecolor & 0xff000000) != 0) rp.stroke(buf, 1, strokecolor);
430 if ((fillcolor & 0xff000000) != 0) rp.fill(buf, new VectorGraphics.SingleColorPaint(fillcolor));
433 // now subtract the pad region from the clip region before proceeding
434 if ((flags & NOCLIP_FLAG) == 0) {
435 clipw = min(max(clipx, globalx + hpad) + clipw, globalx + width - hpad) - clipx;
436 cliph = min(max(clipy, globaly + vpad) + cliph, globaly + height - vpad) - clipy;
437 clipx = max(clipx, globalx + hpad);
438 clipy = max(clipy, globaly + vpad);
441 for(Box b = getChild(0); b != null; b = b.nextSibling()) {
442 a.translate(b.x, b.y);
443 b.render(globalx, globaly, clipx, clipy, clipw, cliph, buf, a);
444 a.translate(-1 * b.x, -1 * b.y);
448 void renderStretchedImage(int globalx, int globaly, int clipx, int clipy, int clipw, int cliph, PixelBuffer buf) {
450 buf.drawPicture(image, clipx, clipy, clipx + clipw, clipy + cliph, 0, 0, image.getWidth(), image.getHeight());
453 void renderTiledImage(int globalx, int globaly, int x, int y, int w, int h, PixelBuffer buf) {
454 int iw = image.getWidth();
455 int ih = image.getHeight();
456 for(int i=(x - x)/iw; i <= (x + w - x)/iw; i++) {
457 for(int j=(y - y)/ih; j<= (y + h - y)/ih; j++) {
459 int dx1 = max(i * iw + x, x);
460 int dy1 = max(j * ih + y, y);
461 int dx2 = min((i+1) * iw + x, x + w);
462 int dy2 = min((j+1) * ih + y, y + h);
464 int sx1 = dx1 - (i*iw) - x;
465 int sy1 = dy1 - (j*ih) - y;
466 int sx2 = dx2 - (i*iw) - x;
467 int sy2 = dy2 - (j*ih) - y;
469 if (dx2 - dx1 > 0 && dy2 - dy1 > 0 && sx2 - sx1 > 0 && sy2 - sy1 > 0)
470 buf.drawPicture(image, dx1, dy1, dx2, dy2, sx1, sy1, sx2, sy2);
475 void renderText(int x, int y, int clipx, int clipy, int clipw, int cliph, PixelBuffer buf) {
476 for(int i=0; i<text.length(); i++) {
478 char c = text.charAt(i);
479 Glyph g = Glyph.getGlyph(font, fontsize, c);
482 y + vpad + g.max_ascent - g.baseline,
483 x + hpad + g.p.getWidth(),
484 y + vpad + g.max_ascent - g.baseline + g.p.getHeight(),
486 g.p.getWidth(), g.p.getHeight());
492 // Methods to implement org.xwt.js.JS //////////////////////////////////////
494 public Object callMethod(Object method, JS.Array args, boolean checkOnly) throws JS.Exn {
495 if ("indexof".equals(method)) {
496 if (checkOnly) return Boolean.TRUE;
497 if (args.length() != 1 || args.elementAt(0) == null || !(args.elementAt(0) instanceof Box)) return new Integer(-1);
498 Box b = (Box)args.elementAt(0);
499 if (b.parent != Box.this) {
500 if (redirect == null || redirect == Box.this) return new Integer(-1);
501 return redirect.callMethod(method, args, checkOnly);
503 return new Integer(b.getIndexInParent());
508 /** Returns the i_th child */
509 public Object get(int i) {
510 if (redirect == null) return null;
511 if (redirect != this) return redirect.get(i);
512 return i >= numChildren() || i < 0 ? null : getChild(i);
516 * Inserts value as child i; calls remove() if necessary.
517 * This method handles "reinserting" one of your children properly.
518 * INVARIANT: after completion, getChild(min(i, numChildren())) == newnode
519 * WARNING: O(n) runtime, unless i == numChildren()
521 public void put(int i, Object value) {
524 if (value != null && !(value instanceof Box)) {
525 if (Log.on) Log.logJS(this, "attempt to set a numerical property on a box to anything other than a box");
526 } else if (redirect == null) {
527 if (Log.on) Log.logJS(this, "attempt to add/remove children to/from a node with a null redirect");
528 put("0", (Box)value);
529 } else if (redirect != this) {
530 Box b = value == null ? (Box)redirect.get(i) : (Box)value;
531 redirect.put(i, value);
533 } else if (value == null) {
534 if (i >= 0 && i < numChildren()) {
540 Box newnode = (Box)value;
542 // check if box being moved is currently target of a redirect
543 for(Box cur = newnode.parent; cur != null; cur = cur.parent)
544 if (cur.redirect == newnode) {
545 if (Log.on) Log.logJS(this, "attempt to move a box that is the target of a redirect");
549 // check for recursive ancestor violation
550 for(Box cur = this; cur != null; cur = cur.parent)
551 if (cur == newnode) {
552 if (Log.on) Log.logJS(this, "attempt to make a node a parent of its own ancestor");
553 if (Log.on) Log.log(this, "box == " + this + " ancestor == " + newnode);
557 if (numKids > 15 && children == null) convert_to_array();
559 newnode.parent = this;
561 if (children == null) {
562 if (firstKid == null) {
564 newnode.prevSibling = newnode;
565 newnode.nextSibling = newnode;
566 } else if (i >= numKids) {
567 newnode.prevSibling = firstKid.prevSibling;
568 newnode.nextSibling = firstKid;
569 firstKid.prevSibling.nextSibling = newnode;
570 firstKid.prevSibling = newnode;
573 for(int j=0; j<i; j++) cur = cur.nextSibling;
574 newnode.prevSibling = cur.prevSibling;
575 newnode.nextSibling = cur;
576 cur.prevSibling.nextSibling = newnode;
577 cur.prevSibling = newnode;
578 if (i == 0) firstKid = newnode;
583 if (i >= children.size()) {
584 newnode.indexInParent = children.size();
585 children.addElement(newnode);
587 children.insertElementAt(newnode, i);
588 for(int j=i; j<children.size(); j++)
589 getChild(j).indexInParent = j;
593 // need both of these in case child was already uncalc'ed
596 MARK_FOR_REFLOW_this;
600 // note that JavaScript box[0] will invoke put(int i), not put(String s)
605 public Object get(Object key, Object key2) { return super.get(key, key2); }
606 public void put(Object key, Object key2, Object val) { super.put(key, key2, val); }
608 public Object get_(Object name) { return super.get(name); }
609 public Object get(Object name) { return get(name, false); }
610 public Object get(Object name_, boolean ignoretraps) {
611 if (name_ instanceof Number) return get(((Number)name_).intValue());
613 if (!(name_ instanceof String)) return null;
614 String name = (String)name_;
615 if (name.equals("")) return null;
617 // See if we're triggering a trap
618 Trap t = ignoretraps ? (Trap)null : (Trap)get(name, Trap.class);
619 if (t != null) return t.perform();
621 // Check for a special handler
622 SpecialBoxProperty gph = (SpecialBoxProperty)SpecialBoxProperty.specialBoxProperties.get(name);
623 if (gph != null) return gph.get(this);
625 Object ret = super.get(name);
626 if (name.startsWith("$") && ret == null)
627 if (Log.on) Log.logJS(this, "WARNING: attempt to access " + name + ", but no child with id=\"" +
628 name.substring(1) + "\" found");
632 public Object[] keys() {
633 Object[] ret = new Object[numChildren()];
634 for(int i=0; i<ret.length; i++) ret[i] = new Integer(i);
638 public void addTrap(Object name, Object value) { Trap.addTrap(this, name, ((JS.CompiledFunction)value)); }
639 public void delTrap(Object name, Object value) { Trap.delTrap(this, name, ((JS.CompiledFunction)value)); }
644 * @param ignoretraps if set, no traps will be triggered (set when 'cascade' reaches the bottom of the trap stack)
645 * @param rp if this put is being performed via a root proxy, rp is the root proxy.
647 public void put_(Object name, Object value) { super.put(name, value); }
648 public void put(Object name, Object value) { put(name, value, false); }
649 public void put(Object name_, Object value, boolean ignoretraps) {
650 if (name_ instanceof Number) { put(((Number)name_).intValue(), value); return; }
651 if (!(name_ instanceof String)) { super.put(name_,value); return; }
652 String name = name_.toString();
654 Trap t = (Trap)get(name, Trap.class);
661 // don't want to really cascade down to the box on this one
662 if (name.equals("0")) return;
664 SpecialBoxProperty gph = (SpecialBoxProperty)SpecialBoxProperty.specialBoxProperties.get(name);
665 if (gph != null) { gph.put(name, this, value); return; }
667 super.put(name, value);
671 // Tree Manipulation /////////////////////////////////////////////////////////////////////
673 /** The parent of this node */
674 private Box parent = null;
676 // Variables used in Vector mode */
677 /** INVARIANT: if (parent != null) parent.children.elementAt(indexInParent) == this */
678 private int indexInParent;
679 private Vec children = null;
681 // Variables used in linked-list mode
682 private int numKids = 0;
683 private Box nextSibling = null;
684 private Box prevSibling = null;
685 private Box firstKid = null;
687 // when we get more than 15 children, we switch to array-mode
688 private void convert_to_array() {
689 children = new Vec(numKids);
692 children.addElement(cur);
693 cur.indexInParent = children.size() - 1;
694 cur = cur.nextSibling;
695 } while (cur != firstKid);
698 /** remove this node from its parent; INVARIANT: whenever the parent of a node is changed, remove() gets called. */
699 public void remove() {
700 if (parent == null) {
701 if (surface != null) surface.dispose(true);
704 Box oldparent = parent;
705 if (oldparent == null) return;
706 MARK_FOR_REFLOW_this;
708 flags &= ~MOUSEINSIDE_FLAG;
710 if (parent.children != null) {
711 parent.children.removeElementAt(indexInParent);
712 for(int j=indexInParent; j<parent.children.size(); j++)
713 (parent.getChild(j)).indexInParent = j;
716 if (parent.firstKid == this) {
717 if (nextSibling == this) parent.firstKid = null;
718 else parent.firstKid = nextSibling;
721 prevSibling.nextSibling = nextSibling;
722 nextSibling.prevSibling = prevSibling;
728 if (oldparent != null) { Box b = oldparent; MARK_FOR_REFLOW_b; }
730 // note that JavaScript box[0] will invoke put(int i), not put(String s)
731 if (oldparent != null) oldparent.put("0", this);
734 /** returns our next sibling (parent[ourindex + 1]) */
735 public final Box nextSibling() {
736 if (parent == null) return null;
737 if (parent.children == null) {
738 if (nextSibling == parent.firstKid) return null;
741 if (indexInParent >= parent.children.size() - 1) return null;
742 return (Box)parent.children.elementAt(indexInParent + 1);
746 /** returns our next sibling (parent[ourindex + 1]) */
747 public final Box prevSibling() {
748 if (parent == null) return null;
749 if (parent.children == null) {
750 if (this == parent.firstKid) return null;
753 if (indexInParent == 0) return null;
754 return (Box)parent.children.elementAt(indexInParent - 1);
758 /** Returns the parent of this node */
759 public Box getParent() { return parent; }
761 /** Returns ith child */
762 public Box getChild(int i) {
763 if (children == null) {
764 if (firstKid == null) return null;
765 if (i >= numKids) return null;
766 if (i == numKids - 1) return firstKid.prevSibling;
768 for(int j=0; j<i; j++) cur = cur.nextSibling;
771 if (i >= children.size() || i < 0) return null;
772 return (Box)children.elementAt(i);
776 /** Returns the number of children */
777 public int numChildren() {
778 if (children == null) {
779 if (firstKid == null) return 0;
781 for(Box cur = firstKid.nextSibling; cur != firstKid; i++) cur = cur.nextSibling;
784 return children.size();
788 /** Returns our index in our parent */
789 public int getIndexInParent() {
790 if (parent == null) return 0;
791 if (parent.children == null) {
793 for(Box cur = this; cur != parent.firstKid; i++) cur = cur.prevSibling;
796 return indexInParent;
800 /** returns the root of the surface that this box belongs to */
801 public final Box getRoot() {
802 if (parent == null && surface != null) return this;
803 if (parent == null) return null;
804 return parent.getRoot();
808 // Trivial Helper Methods (should be inlined) /////////////////////////////////////////
810 static final int min(int a, int b) { if (a<b) return a; else return b; }
811 static final double min(double a, double b) { if (a<b) return a; else return b; }
812 static final int max(int a, int b) { if (a>b) return a; else return b; }
813 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; }
814 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; }
815 static final int bound(int a, int b, int c) { if (c < b) return c; if (a > b) return a; return b; }
816 final boolean inside(int x, int y) { return (!((flags & INVISIBLE_FLAG) != 0) && x >= 0 && y >= 0 && x < width && y < height); }
818 /** figures out what box in this subtree of the Box owns the pixel at x,y relitave to the Surface */
819 public static Box whoIs(Box cur, int x, int y) {
821 if (cur.parent != null) throw new Error("whoIs may only be invoked on the root box of a surface");
825 // WARNING: this method is called from the event-queueing
826 // thread -- it may run concurrently with ANY part of XWT, and
827 // is UNSYNCHRONIZED for performance reasons. BE CAREFUL
830 if ((cur.flags & INVISIBLE_FLAG) != 0) return null;
831 if (!cur.inside(x - globalx, y - globaly)) return cur.parent == null ? cur : null;
833 for(int i=cur.numChildren() - 1; i>=0; i--) {
834 Box child = cur.getChild(i);
835 if (child == null) continue; // since this method is unsynchronized, we have to double-check
838 if (!((child.flags & INVISIBLE_FLAG) != 0) && child.inside(x - globalx, y - globaly)) { cur = child; continue OUTER; }
848 * A helper class for properties of Box which require special
851 * To avoid excessive use of String.equals(), the Box.get() and
852 * Box.put() methods employ a Hash keyed on property names that
853 * require special handling. The value stored in the Hash is an
854 * instance of an anonymous subclass of SpecialBoxProperty, which knows
855 * how to handle get()s and put()s for that property name. There
856 * should be one anonymous subclass of SpecialBoxProperty for each
857 * specially-handled property on Box.
859 static class SpecialBoxProperty {
861 SpecialBoxProperty() { }
863 /** stores instances of SpecialBoxProperty; keyed on property name */
864 static Hash specialBoxProperties = new Hash(200, 3);
866 /** this method defines the behavior when the property is get()ed from b */
867 Object get(Box b) { return null; }
869 /** this method defines the behavior when the property is put() to b */
870 void put(Box b, Object value) { }
872 /** this method defines the behavior when the property is put() to b, allows a single SpecialBoxProperty to serve multiple properties */
873 void put(String name, Box b, Object value) { put(b, value); }
876 //#repeat fill/stroke fillcolor/strokecolor
877 specialBoxProperties.put("fill", new SpecialBoxProperty() {
878 public Object get(Box b) {
879 if ((b.fillcolor & 0xFF000000) == 0) return null;
880 String red = Integer.toHexString((b.fillcolor & 0x00FF0000) >> 16);
881 String green = Integer.toHexString((b.fillcolor & 0x0000FF00) >> 8);
882 String blue = Integer.toHexString(b.fillcolor & 0x000000FF);
883 if (red.length() < 2) red = "0" + red;
884 if (blue.length() < 2) blue = "0" + blue;
885 if (green.length() < 2) green = "0" + green;
886 return "#" + red + green + blue;
888 public void put(Box b, Object value) {
889 int newcolor = b.fillcolor;
890 String s = value == null ? null : value.toString();
891 if (value == null) newcolor = 0x00000000;
892 else if (s.length() > 0 && s.charAt(0) == '#')
894 newcolor = 0xFF000000 |
895 (Integer.parseInt(s.substring(1, 3), 16) << 16) |
896 (Integer.parseInt(s.substring(3, 5), 16) << 8) |
897 Integer.parseInt(s.substring(5, 7), 16);
898 } catch (NumberFormatException e) {
899 Log.log(this, "invalid color " + s);
902 else if (org.xwt.translators.SVG.colors.get(s) != null)
903 newcolor = 0xFF000000 | ((Integer)org.xwt.translators.SVG.colors.get(s)).intValue();
904 if (newcolor == b.fillcolor) return;
905 b.fillcolor = newcolor;
911 specialBoxProperties.put("color", new SpecialBoxProperty() {
912 public Object get(Box b) { return b.get("fill"); }
913 public void put(Box b, Object value) { b.put("fill", value); }
916 specialBoxProperties.put("textcolor", new SpecialBoxProperty() {
917 public Object get(Box b) { return b.get("stroke"); }
918 public void put(Box b, Object value) { b.put("stroke", value); }
921 specialBoxProperties.put("text", new SpecialBoxProperty() {
922 public Object get(Box b) { return b.text; }
923 public void put(Box b, Object value) {
924 String t = value == null ? "null" : value.toString();
925 if (t.equals(b.text)) return;
928 if (b.textwidth != 0 || b.textheight != 0) MARK_FOR_REFLOW_b;
929 b.textwidth = b.textheight = 0;
934 for(int i=0; i<b.text.length(); i++) {
935 Glyph g = Glyph.getGlyph(b.font, b.fontsize, b.text.charAt(i));
936 b.textwidth += g.advance;
937 b.textheight = g.max_ascent + g.max_descent;
939 } catch (Exception e) {
946 specialBoxProperties.put("path", new SpecialBoxProperty() {
947 public Object get(Box b) { throw new JS.Exn("cannot read from the path property"); }
948 public void put(Box b, Object value) {
949 String t = value == null ? "null" : value.toString();
950 b.path = value == null ? null : VectorGraphics.parseVectorPath(value.toString());
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("transform", new SpecialBoxProperty() {
966 public Object get(Box b) { return b.font; }
967 public void put(Box b, Object value) {
968 // FIXME: translate value into a resource if it is a string
969 b.font = value == null ? null : (Res)value;
971 b.flags |= FONT_CHANGED_FLAG;
975 specialBoxProperties.put("fontsize", new SpecialBoxProperty() {
976 public Object get(Box b) { return b.font; }
977 public void put(Box b, Object value) {
978 if (b.fontsize == stoi(value)) return;
979 b.fontsize = stoi(value);
981 b.flags |= FONT_CHANGED_FLAG;
985 specialBoxProperties.put("strokewidth", new SpecialBoxProperty() {
986 public Object get(Box b) { return new Integer(b.strokewidth); }
987 public void put(Box b, Object value) {
988 if (b.strokewidth == stoi(value)) return;
989 b.strokewidth = stoi(value);
993 specialBoxProperties.put("thisbox", new SpecialBoxProperty() {
994 public Object get(Box b) { return b; }
995 public void put(Box b, Object value) {
996 if (value == null) b.remove();
997 else if (value.equals("window") || value.equals("frame")) Platform.createSurface(b, value.equals("frame"), true);
998 else if (Log.on) Log.log(this, "put invalid value to 'thisbox' property: " + value);
1002 specialBoxProperties.put("orient", new SpecialBoxProperty() {
1003 public Object get(Box b) {
1004 Log.log(this, "warning: the orient property is deprecated");
1005 if (b.redirect == null) return "horizontal";
1006 else if (b.redirect != b) return get(b.redirect);
1007 else if (b.cols == 1) return "vertical";
1008 else if (b.rows == 1) return "horizontal";
1011 public void put(Box b, Object value) {
1012 Log.log(this, "warning: the orient property is deprecated");
1013 if (value == null) return;
1014 if (b.redirect == null) return;
1015 if (b.redirect != b) { put(b.redirect, value); return; }
1016 if (value.equals("vertical")) {
1017 if (b.rows == 0) return;
1018 b.rows = 0; b.cols = 1;
1019 } else if (value.equals("horizontal")) {
1020 if (b.cols == 0) return;
1021 b.cols = 0; b.rows = 1;
1023 Log.log(this, "invalid value put to orient property: " + value);
1028 specialBoxProperties.put("static", new SpecialBoxProperty() {
1031 specialBoxProperties.put("shrink", new SpecialBoxProperty() {
1032 public Object get(Box b) { return (((b.flags & HSHRINK_FLAG) != 0) || ((b.flags & VSHRINK_FLAG) != 0)) ? Boolean.TRUE : Boolean.FALSE; }
1033 public void put(Box b, Object value) { b.put("hshrink", value); b.put("vshrink", value); }
1036 //#repeat hshrink/vshrink HSHRINK_FLAG/VSHRINK_FLAG
1037 specialBoxProperties.put("hshrink", new SpecialBoxProperty() {
1038 public Object get(Box b) { return new Boolean((b.flags & HSHRINK_FLAG) != 0); }
1039 public void put(Box b, Object value) {
1040 boolean newshrink = stob(value);
1041 if (((b.flags & HSHRINK_FLAG) != 0) == newshrink) return;
1042 if (newshrink) b.flags |= HSHRINK_FLAG; else b.flags &= ~HSHRINK_FLAG;
1049 specialBoxProperties.put("x", new SpecialBoxProperty() {
1050 public Object get(Box b) {
1051 if (b.surface == null) return new Integer(0);
1052 if ((b.flags & INVISIBLE_FLAG) != 0) return new Integer(0);
1053 return new Integer(b.x);
1055 public void put(Box b, Object value) {
1056 if (!((b.flags & ABSOLUTE_FLAG) != 0)) return;
1057 int x = stoi(value);
1058 if (x == b.x) return;
1061 if (b.parent == null && b.surface != null) b.surface.setLocation();
1068 //#repeat width/height minwidth/minheight maxwidth/maxheight
1069 specialBoxProperties.put("width", new SpecialBoxProperty() {
1070 public Object get(Box b) { return new Integer(b.width); }
1071 public void put(Box b, Object value) {
1072 b.width = stoi(value);
1073 if (b.parent == null && b.surface != null) {
1074 b.surface.setSize();
1077 if (b.minwidth == b.width && b.maxwidth == b.width) return;
1078 b.minwidth = b.maxwidth = b.width;
1084 //#repeat cols/rows rows/cols
1085 specialBoxProperties.put("cols", new SpecialBoxProperty() {
1086 public Object get(Box b) { return new Double(b.cols); }
1087 public void put(Box b, Object value) {
1088 if (b.cols == stoi(value)) return;
1089 b.cols = stoi(value);
1090 if (b.cols == 0 && b.rows == 0) b.rows = 1;
1091 if (b.cols != 0 && b.rows != 0) b.rows = 0;
1096 //#repeat colspan/rowspan
1097 specialBoxProperties.put("colspan", new SpecialBoxProperty() {
1098 public Object get(Box b) { return new Double(b.colspan); }
1099 public void put(Box b, Object value) {
1100 if (b.colspan == stoi(value)) return;
1101 b.colspan = stoi(value);
1107 specialBoxProperties.put("tile", new SpecialBoxProperty() {
1108 public Object get(Box b) { return ((b.flags & TILE_FLAG) != 0) ? Boolean.TRUE : Boolean.FALSE; }
1109 public void put(Box b, Object value) {
1110 if (((b.flags & TILE_FLAG) != 0) == stob(value)) return;
1111 if (stob(value)) b.flags |= TILE_FLAG; else b.flags &= ~TILE_FLAG;
1115 specialBoxProperties.put("noclip", new SpecialBoxProperty() {
1116 public Object get(Box b) { return ((b.flags & NOCLIP_FLAG) != 0) ? Boolean.TRUE : Boolean.FALSE; }
1117 public void put(Box b, Object value) {
1118 if (((b.flags & NOCLIP_FLAG) != 0) == stob(value)) return;
1119 if (stob(value)) b.flags |= NOCLIP_FLAG; else b.flags &= ~NOCLIP_FLAG;
1124 specialBoxProperties.put("invisible", new SpecialBoxProperty() {
1125 public Object get(Box b) {
1126 for (Box cur = b; cur != null; cur = cur.parent) {
1127 if ((cur.flags & INVISIBLE_FLAG) != 0) return Boolean.TRUE; }
1128 return Boolean.FALSE;
1130 public void put(Box b, Object value) {
1131 if (stob(value) == ((b.flags & INVISIBLE_FLAG) != 0)) return;
1132 if (stob(value)) b.flags |= INVISIBLE_FLAG; else b.flags &= ~INVISIBLE_FLAG;
1133 if (b.parent == null) {
1134 if (b.surface != null) b.surface.setInvisible((b.flags & INVISIBLE_FLAG) != 0);
1137 MARK_FOR_REFLOW_b_parent;
1138 b.parent.dirty(b.x, b.y, b.width, b.height);
1142 specialBoxProperties.put("absolute", new SpecialBoxProperty() {
1143 public Object get(Box b) { return ((b.flags & ABSOLUTE_FLAG) != 0) ? Boolean.TRUE : Boolean.FALSE; }
1144 public void put(Box b, Object value) {
1145 if (stob(value) == ((b.flags & ABSOLUTE_FLAG) != 0)) return;
1146 if (stob(value)) b.flags |= ABSOLUTE_FLAG; else b.flags &= ~ABSOLUTE_FLAG;
1147 if ((b.flags & ABSOLUTE_FLAG) != 0) { b.x = 0; b.y = 0; }
1148 if (b.parent != null) MARK_FOR_REFLOW_b_parent;
1151 specialBoxProperties.put("image", new SpecialBoxProperty() {
1153 public Object get(Box b) { return b.image == null ? null : ImageDecoder.imageToNameMap.get(b.image); }
1155 public void put(Box b, Object value) {
1156 //if (image != null) System.out.println("hit");
1157 if (value == null) {
1159 } else if (value instanceof Res) {
1160 b.image = Picture.fromRes((Res)value);
1164 b.minwidth = min(b.maxwidth, max(b.minwidth, b.image == null ? 0 : b.image.getWidth()));
1165 b.minheight = min(b.maxheight, max(b.minheight, b.image == null ? 0 : b.image.getHeight()));
1171 //#repeat globalx/globaly x/y
1172 specialBoxProperties.put("globalx", new SpecialBoxProperty() {
1173 public Object get(Box b) { return new Integer(b.parent == null || b.surface == null ? 0 : b.x); }
1174 public void put(Box b, Object value) {
1175 if (b.surface == null || b.parent == null) return;
1176 b.put("x", new Integer(stoi(value) - stoi(get(b.parent))));
1182 specialBoxProperties.put("cursor", new SpecialBoxProperty() {
1183 public Object get(Box b) { return b.cursor; }
1184 public void put(Box b, Object value) {
1185 b.cursor = (String)value;
1186 if (b.surface == null) return;
1188 // see if we need to update the surface cursor
1189 Surface surface = b.getRoot().surface;
1190 String tempcursor = surface.cursor;
1191 b.Move(surface.mousex, surface.mousey, surface.mousex, surface.mousey);
1192 if (surface.cursor != tempcursor) surface.syncCursor();
1196 //#repeat mousex/mousey x/y
1197 specialBoxProperties.put("mousex", new SpecialBoxProperty() {
1198 public Object get(Box b) {
1199 Surface surface = b.getRoot().surface;
1200 if (surface == null) return new Integer(0);
1201 int mousex = surface.mousex;
1202 for(Box cur = b; cur != null && cur.parent != null; cur = cur.parent) mousex -= cur.x;
1203 return new Integer(mousex);
1208 specialBoxProperties.put("mouseinside", new SpecialBoxProperty() {
1209 public Object get(Box b) {
1210 return ((b.flags & MOUSEINSIDE_FLAG) != 0) ? Boolean.TRUE : Boolean.FALSE; }
1213 specialBoxProperties.put("numchildren", new SpecialBoxProperty() {
1214 public Object get(Box b) {
1215 if (b.redirect == null) return new Integer(0);
1216 if (b.redirect != b) return get(b.redirect);
1217 return new Integer(b.numChildren());
1220 SpecialBoxProperty mouseEventHandler = new SpecialBoxProperty() {
1221 public void put(String name, Box b, Object value) {
1222 Surface surface = b.getRoot().surface;
1223 if (surface == null) return;
1224 int mousex = surface.mousex;
1225 int mousey = surface.mousey;
1226 for(Box c = b.parent; c != null && c.parent != null; c = c.parent) {
1230 for(Box c = b.prevSibling(); c != null; c = c.prevSibling()) {
1231 if (c.inside(mousex - c.x, mousey - c.y)) {
1236 if (b.parent != null) b.parent.put(name, value);
1239 specialBoxProperties.put("Press1", mouseEventHandler);
1240 specialBoxProperties.put("Press2", mouseEventHandler);
1241 specialBoxProperties.put("Press3", mouseEventHandler);
1242 specialBoxProperties.put("Release1", mouseEventHandler);
1243 specialBoxProperties.put("Release2", mouseEventHandler);
1244 specialBoxProperties.put("Release3", mouseEventHandler);
1245 specialBoxProperties.put("Click1", mouseEventHandler);
1246 specialBoxProperties.put("Click2", mouseEventHandler);
1247 specialBoxProperties.put("Click3", mouseEventHandler);
1248 specialBoxProperties.put("DoubleClick1", mouseEventHandler);
1249 specialBoxProperties.put("DoubleClick2", mouseEventHandler);
1250 specialBoxProperties.put("DoubleClick3", mouseEventHandler);
1252 specialBoxProperties.put("root", new SpecialBoxProperty() {
1253 public void put(Box b, Object value) {
1254 if (stob(value)) b.flags |= ISROOT_FLAG;
1255 else b.flags &= ~ISROOT_FLAG;
1257 public Object get(Box b) {
1258 if (b.parent == null || ((b.flags & ISROOT_FLAG) != 0)) return b;
1259 else return get(b.parent);
1262 specialBoxProperties.put("Minimized", new SpecialBoxProperty() {
1263 public Object get(Box b) {
1264 if (b.parent == null && b.surface != null) return b.surface.minimized ? Boolean.TRUE : Boolean.FALSE;
1267 public void put(Box b, Object value) {
1268 if (b.surface == null) return;
1269 boolean val = stob(value);
1270 if (b.parent == null && b.surface.minimized != val) b.surface.setMinimized(val);
1274 specialBoxProperties.put("Maximized", new SpecialBoxProperty() {
1275 public Object get(Box b) {
1276 if (b.parent == null && b.surface != null) return b.surface.maximized ? Boolean.TRUE : Boolean.FALSE;
1279 public void put(Box b, Object value) {
1280 if (b.surface == null) return;
1281 boolean val = stob(value);
1282 if (b.parent == null && b.surface.maximized != val) b.surface.setMaximized(val);
1286 specialBoxProperties.put("toback", new SpecialBoxProperty() {
1287 public void put(Box b, Object value) {
1288 if (b.parent == null && stob(value) && b.surface != null) b.surface.toBack();
1292 specialBoxProperties.put("tofront", new SpecialBoxProperty() {
1293 public void put(Box b, Object value) {
1294 if (b.parent == null && stob(value) && b.surface != null) b.surface.toFront();
1298 specialBoxProperties.put("Close", new SpecialBoxProperty() {
1299 public void put(Box b, Object value) {
1300 if (b.parent == null && b.surface != null) b.surface.dispose(true);
1304 // these are all do-nothings; just to prevent space from getting taken up in the params Hash.
1305 specialBoxProperties.put("KeyPressed", new SpecialBoxProperty());
1306 specialBoxProperties.put("KeyReleased", new SpecialBoxProperty());
1307 specialBoxProperties.put("PosChange", new SpecialBoxProperty());
1308 specialBoxProperties.put("SizeChange", new SpecialBoxProperty());
1311 specialBoxProperties.put("hpad", new SpecialBoxProperty() {
1312 public Object get(Box b) {
1313 if (b.redirect == null) return new Integer(0);
1314 if (b.redirect != b) return get(b.redirect);
1315 return new Integer(b.hpad);
1317 public void put(Box b, Object value) {
1318 if (b.redirect == null) return;
1319 if (b.redirect != b) { put(b.redirect, value); return; }
1320 int newval = stoi(value);
1321 if (newval == b.hpad) return;
1328 //#repeat minwidth/minheight maxwidth/maxheight
1329 specialBoxProperties.put("minwidth", new SpecialBoxProperty() {
1330 public Object get(Box b) { return new Integer(b.minwidth); }
1331 public void put(Box b, Object value) {
1332 if (stoi(value) == b.minwidth) return;
1333 b.minwidth = stoi(value);
1337 specialBoxProperties.put("maxwidth", new SpecialBoxProperty() {
1338 public Object get(Box b) { return new Integer(b.maxwidth); }
1339 public void put(Box b, Object value) {
1340 if (stoi(value) == b.maxwidth) return;
1341 b.maxwidth = stoi(value);
1347 specialBoxProperties.put("redirect", new SpecialBoxProperty() {
1348 public void put(Box b, Object value) {
1349 if (b.redirect != b) Log.log(this, "cannot change the redirect of a box once it is set");
1350 else if (value == null) b.redirect = null;
1352 Box b2 = (Box)value;
1353 while(b2 != b && b2 != null) b2 = b2.parent;
1354 if (b2 == null) Log.log(this, "a box's redirect must be one of its descendants");
1355 b.redirect = (Box)value;
1358 public Object get(Box b) {
1359 if (b.redirect == null) return null;
1360 if (b.redirect == b) return Boolean.TRUE;
1361 return get(b.redirect);
1365 // FEATURE: this still isn't totally harmonious; when you createSurface, these aren't checked
1366 specialBoxProperties.put("titlebar", new SpecialBoxProperty() {
1367 public void put(Box b, Object value) {
1368 if (b.surface != null) b.surface.setTitleBarText(value.toString());
1369 b.put_("titlebar", value);
1371 public Object get(Box b) { return b.get_("titlebar"); }
1374 specialBoxProperties.put("icon", new SpecialBoxProperty() {
1377 public void put(Box b, Object value) {
1378 b.put_("icon", value);
1379 if (b.surface == null) return;
1380 Picture pic = ImageDecoder.getPicture(value.toString());
1381 if (pic != null) b.surface.setIcon(pic);
1382 else if (Log.on) Log.log(this, "unable to load icon " + value);
1384 public Object get(Box b) { return b.get_("icon"); }
1390 /** helper that converts a String to a boolean according to JavaScript coercion rules */
1391 public static boolean stob(Object o) {
1392 if (o == null) return false;
1393 return Boolean.TRUE.equals(o) || "true".equals(o);
1396 /** helper that converts a String to an int according to JavaScript coercion rules */
1397 public static int stoi(Object o) {
1398 if (o == null) return 0;
1399 if (o instanceof Integer) return ((Integer)o).intValue();
1402 if (!(o instanceof String)) s = o.toString();
1405 try { return Integer.parseInt(s.indexOf('.') == -1 ? s : s.substring(0, s.indexOf('.'))); }
1406 catch (NumberFormatException e) { return 0; }