1 // Copyright (c) 2005, 2006 Thomas Fuchs (http://script.aculo.us, http://mir.aculo.us)
2 // (c) 2005, 2006 Sammi Williams (http://www.oriontransfer.co.nz, sammi@oriontransfer.co.nz)
4 // script.aculo.us is freely distributable under the terms of an MIT-style license.
5 // For details, see the script.aculo.us web site: http://script.aculo.us/
7 if(typeof Effect == 'undefined')
8 throw("dragdrop.js requires including script.aculo.us' effects.js library");
13 remove: function(element) {
14 this.drops = this.drops.reject(function(d) { return d.element==$(element) });
17 add: function(element) {
19 var options = Object.extend({
23 }, arguments[1] || {});
26 if(options.containment) {
27 options._containers = [];
28 var containment = options.containment;
29 if((typeof containment == 'object') &&
30 (containment.constructor == Array)) {
31 containment.each( function(c) { options._containers.push($(c)) });
33 options._containers.push($(containment));
37 if(options.accept) options.accept = [options.accept].flatten();
39 Element.makePositioned(element); // fix IE
40 options.element = element;
42 this.drops.push(options);
45 findDeepestChild: function(drops) {
48 for (i = 1; i < drops.length; ++i)
49 if (Element.isParent(drops[i].element, deepest.element))
55 isContained: function(element, drop) {
58 containmentNode = element.treeNode;
60 containmentNode = element.parentNode;
62 return drop._containers.detect(function(c) { return containmentNode == c });
65 isAffected: function(point, element, drop) {
67 (drop.element!=element) &&
68 ((!drop._containers) ||
69 this.isContained(element, drop)) &&
71 (Element.classNames(element).detect(
72 function(v) { return drop.accept.include(v) } ) )) &&
73 Position.within(drop.element, point[0], point[1]) );
76 deactivate: function(drop) {
78 Element.removeClassName(drop.element, drop.hoverclass);
79 this.last_active = null;
82 activate: function(drop) {
84 Element.addClassName(drop.element, drop.hoverclass);
85 this.last_active = drop;
88 show: function(point, element) {
89 if(!this.drops.length) return;
92 if(this.last_active) this.deactivate(this.last_active);
93 this.drops.each( function(drop) {
94 if(Droppables.isAffected(point, element, drop))
98 if(affected.length>0) {
99 drop = Droppables.findDeepestChild(affected);
100 Position.within(drop.element, point[0], point[1]);
102 drop.onHover(element, drop.element, Position.overlap(drop.overlap, drop.element));
104 Droppables.activate(drop);
108 fire: function(event, element) {
109 if(!this.last_active) return;
112 if (this.isAffected([Event.pointerX(event), Event.pointerY(event)], element, this.last_active))
113 if (this.last_active.onDrop)
114 this.last_active.onDrop(element, this.last_active.element, event);
119 this.deactivate(this.last_active);
127 register: function(draggable) {
128 if(this.drags.length == 0) {
129 this.eventMouseUp = this.endDrag.bindAsEventListener(this);
130 this.eventMouseMove = this.updateDrag.bindAsEventListener(this);
131 this.eventKeypress = this.keyPress.bindAsEventListener(this);
133 Event.observe(document, "mouseup", this.eventMouseUp);
134 Event.observe(document, "mousemove", this.eventMouseMove);
135 Event.observe(document, "keypress", this.eventKeypress);
137 this.drags.push(draggable);
140 unregister: function(draggable) {
141 this.drags = this.drags.reject(function(d) { return d==draggable });
142 if(this.drags.length == 0) {
143 Event.stopObserving(document, "mouseup", this.eventMouseUp);
144 Event.stopObserving(document, "mousemove", this.eventMouseMove);
145 Event.stopObserving(document, "keypress", this.eventKeypress);
149 activate: function(draggable) {
150 if(draggable.options.delay) {
151 this._timeout = setTimeout(function() {
152 Draggables._timeout = null;
154 Draggables.activeDraggable = draggable;
155 }.bind(this), draggable.options.delay);
157 window.focus(); // allows keypress events if window isn't currently focused, fails for Safari
158 this.activeDraggable = draggable;
162 deactivate: function() {
163 this.activeDraggable = null;
166 updateDrag: function(event) {
167 if(!this.activeDraggable) return;
168 var pointer = [Event.pointerX(event), Event.pointerY(event)];
169 // Mozilla-based browsers fire successive mousemove events with
170 // the same coordinates, prevent needless redrawing (moz bug?)
171 if(this._lastPointer && (this._lastPointer.inspect() == pointer.inspect())) return;
172 this._lastPointer = pointer;
174 this.activeDraggable.updateDrag(event, pointer);
177 endDrag: function(event) {
179 clearTimeout(this._timeout);
180 this._timeout = null;
182 if(!this.activeDraggable) return;
183 this._lastPointer = null;
184 this.activeDraggable.endDrag(event);
185 this.activeDraggable = null;
188 keyPress: function(event) {
189 if(this.activeDraggable)
190 this.activeDraggable.keyPress(event);
193 addObserver: function(observer) {
194 this.observers.push(observer);
195 this._cacheObserverCallbacks();
198 removeObserver: function(element) { // element instead of observer fixes mem leaks
199 this.observers = this.observers.reject( function(o) { return o.element==element });
200 this._cacheObserverCallbacks();
203 notify: function(eventName, draggable, event) { // 'onStart', 'onEnd', 'onDrag'
204 if(this[eventName+'Count'] > 0)
205 this.observers.each( function(o) {
206 if(o[eventName]) o[eventName](eventName, draggable, event);
208 if(draggable.options[eventName]) draggable.options[eventName](draggable, event);
211 _cacheObserverCallbacks: function() {
212 ['onStart','onEnd','onDrag'].each( function(eventName) {
213 Draggables[eventName+'Count'] = Draggables.observers.select(
214 function(o) { return o[eventName]; }
220 /*--------------------------------------------------------------------------*/
222 var Draggable = Class.create();
223 Draggable._dragging = {};
225 Draggable.prototype = {
226 initialize: function(element) {
229 reverteffect: function(element, top_offset, left_offset) {
230 var dur = Math.sqrt(Math.abs(top_offset^2)+Math.abs(left_offset^2))*0.02;
231 new Effect.Move(element, { x: -left_offset, y: -top_offset, duration: dur,
232 queue: {scope:'_draggable', position:'end'}
235 endeffect: function(element) {
236 var toOpacity = typeof element._opacity == 'number' ? element._opacity : 1.0;
237 new Effect.Opacity(element, {duration:0.2, from:0.7, to:toOpacity,
238 queue: {scope:'_draggable', position:'end'},
239 afterFinish: function(){
240 Draggable._dragging[element] = false
247 scrollSensitivity: 20,
249 snap: false, // false, or xy or [x,y] or function(x,y){ return [x,y] }
253 if(!arguments[1] || typeof arguments[1].endeffect == 'undefined')
254 Object.extend(defaults, {
255 starteffect: function(element) {
256 element._opacity = Element.getOpacity(element);
257 Draggable._dragging[element] = true;
258 new Effect.Opacity(element, {duration:0.2, from:element._opacity, to:0.7});
262 var options = Object.extend(defaults, arguments[1] || {});
264 this.element = $(element);
266 if(options.handle && (typeof options.handle == 'string'))
267 this.handle = this.element.down('.'+options.handle, 0);
269 if(!this.handle) this.handle = $(options.handle);
270 if(!this.handle) this.handle = this.element;
272 if(options.scroll && !options.scroll.scrollTo && !options.scroll.outerHTML) {
273 options.scroll = $(options.scroll);
274 this._isScrollChild = Element.childOf(this.element, options.scroll);
277 Element.makePositioned(this.element); // fix IE
279 this.delta = this.currentDelta();
280 this.options = options;
281 this.dragging = false;
283 this.eventMouseDown = this.initDrag.bindAsEventListener(this);
284 Event.observe(this.handle, "mousedown", this.eventMouseDown);
286 Draggables.register(this);
289 destroy: function() {
290 Event.stopObserving(this.handle, "mousedown", this.eventMouseDown);
291 Draggables.unregister(this);
294 currentDelta: function() {
296 parseInt(Element.getStyle(this.element,'left') || '0'),
297 parseInt(Element.getStyle(this.element,'top') || '0')]);
300 initDrag: function(event) {
301 if(typeof Draggable._dragging[this.element] != 'undefined' &&
302 Draggable._dragging[this.element]) return;
303 if(Event.isLeftClick(event)) {
304 // abort on form elements, fixes a Firefox issue
305 var src = Event.element(event);
307 src.tagName=='INPUT' ||
308 src.tagName=='SELECT' ||
309 src.tagName=='OPTION' ||
310 src.tagName=='BUTTON' ||
311 src.tagName=='TEXTAREA')) return;
313 var pointer = [Event.pointerX(event), Event.pointerY(event)];
314 var pos = Position.cumulativeOffset(this.element);
315 this.offset = [0,1].map( function(i) { return (pointer[i] - pos[i]) });
317 Draggables.activate(this);
322 startDrag: function(event) {
323 this.dragging = true;
325 if(this.options.zindex) {
326 this.originalZ = parseInt(Element.getStyle(this.element,'z-index') || 0);
327 this.element.style.zIndex = this.options.zindex;
330 if(this.options.ghosting) {
331 this._clone = this.element.cloneNode(true);
332 Position.absolutize(this.element);
333 this.element.parentNode.insertBefore(this._clone, this.element);
336 if(this.options.scroll) {
337 if (this.options.scroll == window) {
338 var where = this._getWindowScroll(this.options.scroll);
339 this.originalScrollLeft = where.left;
340 this.originalScrollTop = where.top;
342 this.originalScrollLeft = this.options.scroll.scrollLeft;
343 this.originalScrollTop = this.options.scroll.scrollTop;
347 Draggables.notify('onStart', this, event);
349 if(this.options.starteffect) this.options.starteffect(this.element);
352 updateDrag: function(event, pointer) {
353 if(!this.dragging) this.startDrag(event);
355 Droppables.show(pointer, this.element);
356 Draggables.notify('onDrag', this, event);
359 if(this.options.change) this.options.change(this);
361 if(this.options.scroll) {
362 this.stopScrolling();
365 if (this.options.scroll == window) {
366 with(this._getWindowScroll(this.options.scroll)) { p = [ left, top, left+width, top+height ]; }
368 p = Position.page(this.options.scroll);
369 p[0] += this.options.scroll.scrollLeft + Position.deltaX;
370 p[1] += this.options.scroll.scrollTop + Position.deltaY;
371 p.push(p[0]+this.options.scroll.offsetWidth);
372 p.push(p[1]+this.options.scroll.offsetHeight);
375 if(pointer[0] < (p[0]+this.options.scrollSensitivity)) speed[0] = pointer[0]-(p[0]+this.options.scrollSensitivity);
376 if(pointer[1] < (p[1]+this.options.scrollSensitivity)) speed[1] = pointer[1]-(p[1]+this.options.scrollSensitivity);
377 if(pointer[0] > (p[2]-this.options.scrollSensitivity)) speed[0] = pointer[0]-(p[2]-this.options.scrollSensitivity);
378 if(pointer[1] > (p[3]-this.options.scrollSensitivity)) speed[1] = pointer[1]-(p[3]-this.options.scrollSensitivity);
379 this.startScrolling(speed);
382 // fix AppleWebKit rendering
383 if(navigator.appVersion.indexOf('AppleWebKit')>0) window.scrollBy(0,0);
388 finishDrag: function(event, success) {
389 this.dragging = false;
391 if(this.options.ghosting) {
392 Position.relativize(this.element);
393 Element.remove(this._clone);
397 if(success) Droppables.fire(event, this.element);
398 Draggables.notify('onEnd', this, event);
400 var revert = this.options.revert;
401 if(revert && typeof revert == 'function') revert = revert(this.element);
403 var d = this.currentDelta();
404 if(revert && this.options.reverteffect) {
405 this.options.reverteffect(this.element,
406 d[1]-this.delta[1], d[0]-this.delta[0]);
411 if(this.options.zindex)
412 this.element.style.zIndex = this.originalZ;
414 if(this.options.endeffect)
415 this.options.endeffect(this.element);
417 Draggables.deactivate(this);
421 keyPress: function(event) {
422 if(event.keyCode!=Event.KEY_ESC) return;
423 this.finishDrag(event, false);
427 endDrag: function(event) {
428 if(!this.dragging) return;
429 this.stopScrolling();
430 this.finishDrag(event, true);
434 draw: function(point) {
435 var pos = Position.cumulativeOffset(this.element);
436 if(this.options.ghosting) {
437 var r = Position.realOffset(this.element);
438 pos[0] += r[0] - Position.deltaX; pos[1] += r[1] - Position.deltaY;
441 var d = this.currentDelta();
442 pos[0] -= d[0]; pos[1] -= d[1];
444 if(this.options.scroll && (this.options.scroll != window && this._isScrollChild)) {
445 pos[0] -= this.options.scroll.scrollLeft-this.originalScrollLeft;
446 pos[1] -= this.options.scroll.scrollTop-this.originalScrollTop;
449 var p = [0,1].map(function(i){
450 return (point[i]-pos[i]-this.offset[i])
453 if(this.options.snap) {
454 if(typeof this.options.snap == 'function') {
455 p = this.options.snap(p[0],p[1],this);
457 if(this.options.snap instanceof Array) {
458 p = p.map( function(v, i) {
459 return Math.round(v/this.options.snap[i])*this.options.snap[i] }.bind(this))
461 p = p.map( function(v) {
462 return Math.round(v/this.options.snap)*this.options.snap }.bind(this))
466 var style = this.element.style;
467 if((!this.options.constraint) || (this.options.constraint=='horizontal'))
468 style.left = p[0] + "px";
469 if((!this.options.constraint) || (this.options.constraint=='vertical'))
470 style.top = p[1] + "px";
472 if(style.visibility=="hidden") style.visibility = ""; // fix gecko rendering
475 stopScrolling: function() {
476 if(this.scrollInterval) {
477 clearInterval(this.scrollInterval);
478 this.scrollInterval = null;
479 Draggables._lastScrollPointer = null;
483 startScrolling: function(speed) {
484 if(!(speed[0] || speed[1])) return;
485 this.scrollSpeed = [speed[0]*this.options.scrollSpeed,speed[1]*this.options.scrollSpeed];
486 this.lastScrolled = new Date();
487 this.scrollInterval = setInterval(this.scroll.bind(this), 10);
491 var current = new Date();
492 var delta = current - this.lastScrolled;
493 this.lastScrolled = current;
494 if(this.options.scroll == window) {
495 with (this._getWindowScroll(this.options.scroll)) {
496 if (this.scrollSpeed[0] || this.scrollSpeed[1]) {
497 var d = delta / 1000;
498 this.options.scroll.scrollTo( left + d*this.scrollSpeed[0], top + d*this.scrollSpeed[1] );
502 this.options.scroll.scrollLeft += this.scrollSpeed[0] * delta / 1000;
503 this.options.scroll.scrollTop += this.scrollSpeed[1] * delta / 1000;
507 Droppables.show(Draggables._lastPointer, this.element);
508 Draggables.notify('onDrag', this);
509 if (this._isScrollChild) {
510 Draggables._lastScrollPointer = Draggables._lastScrollPointer || $A(Draggables._lastPointer);
511 Draggables._lastScrollPointer[0] += this.scrollSpeed[0] * delta / 1000;
512 Draggables._lastScrollPointer[1] += this.scrollSpeed[1] * delta / 1000;
513 if (Draggables._lastScrollPointer[0] < 0)
514 Draggables._lastScrollPointer[0] = 0;
515 if (Draggables._lastScrollPointer[1] < 0)
516 Draggables._lastScrollPointer[1] = 0;
517 this.draw(Draggables._lastScrollPointer);
520 if(this.options.change) this.options.change(this);
523 _getWindowScroll: function(w) {
526 if (w.document.documentElement && documentElement.scrollTop) {
527 T = documentElement.scrollTop;
528 L = documentElement.scrollLeft;
529 } else if (w.document.body) {
536 } else if (w.document.documentElement && documentElement.clientWidth) {
537 W = documentElement.clientWidth;
538 H = documentElement.clientHeight;
540 W = body.offsetWidth;
541 H = body.offsetHeight
544 return { top: T, left: L, width: W, height: H };
548 /*--------------------------------------------------------------------------*/
550 var SortableObserver = Class.create();
551 SortableObserver.prototype = {
552 initialize: function(element, observer) {
553 this.element = $(element);
554 this.observer = observer;
555 this.lastValue = Sortable.serialize(this.element);
558 onStart: function() {
559 this.lastValue = Sortable.serialize(this.element);
564 if(this.lastValue != Sortable.serialize(this.element))
565 this.observer(this.element)
570 SERIALIZE_RULE: /^[^_\-](?:[A-Za-z0-9\-\_]*)[_](.*)$/,
574 _findRootElement: function(element) {
575 while (element.tagName != "BODY") {
576 if(element.id && Sortable.sortables[element.id]) return element;
577 element = element.parentNode;
581 options: function(element) {
582 element = Sortable._findRootElement($(element));
584 return Sortable.sortables[element.id];
587 destroy: function(element){
588 var s = Sortable.options(element);
591 Draggables.removeObserver(s.element);
592 s.droppables.each(function(d){ Droppables.remove(d) });
593 s.draggables.invoke('destroy');
595 delete Sortable.sortables[s.element.id];
599 create: function(element) {
600 element = $(element);
601 var options = Object.extend({
603 tag: 'li', // assumes li children, override with tag: 'tagname'
607 overlap: 'vertical', // one of 'vertical', 'horizontal'
608 constraint: 'vertical', // one of 'vertical', 'horizontal', false
609 containment: element, // also takes array of elements (or id's); or false
610 handle: false, // or a CSS class
616 scrollSensitivity: 20,
618 format: this.SERIALIZE_RULE,
619 onChange: Prototype.emptyFunction,
620 onUpdate: Prototype.emptyFunction
621 }, arguments[1] || {});
623 // clear any old sortable with same element
624 this.destroy(element);
626 // build options for the draggables
627 var options_for_draggable = {
629 scroll: options.scroll,
630 scrollSpeed: options.scrollSpeed,
631 scrollSensitivity: options.scrollSensitivity,
632 delay: options.delay,
633 ghosting: options.ghosting,
634 constraint: options.constraint,
635 handle: options.handle };
637 if(options.starteffect)
638 options_for_draggable.starteffect = options.starteffect;
640 if(options.reverteffect)
641 options_for_draggable.reverteffect = options.reverteffect;
643 if(options.ghosting) options_for_draggable.reverteffect = function(element) {
644 element.style.top = 0;
645 element.style.left = 0;
648 if(options.endeffect)
649 options_for_draggable.endeffect = options.endeffect;
652 options_for_draggable.zindex = options.zindex;
654 // build options for the droppables
655 var options_for_droppable = {
656 overlap: options.overlap,
657 containment: options.containment,
659 hoverclass: options.hoverclass,
660 onHover: Sortable.onHover
663 var options_for_tree = {
664 onHover: Sortable.onEmptyHover,
665 overlap: options.overlap,
666 containment: options.containment,
667 hoverclass: options.hoverclass
670 // fix for gecko engine
671 Element.cleanWhitespace(element);
673 options.draggables = [];
674 options.droppables = [];
676 // drop on empty handling
677 if(options.dropOnEmpty || options.tree) {
678 Droppables.add(element, options_for_tree);
679 options.droppables.push(element);
682 (this.findElements(element, options) || []).each( function(e) {
683 // handles are per-draggable
684 var handle = options.handle ?
685 $(e).down('.'+options.handle,0) : e;
686 options.draggables.push(
687 new Draggable(e, Object.extend(options_for_draggable, { handle: handle })));
688 Droppables.add(e, options_for_droppable);
689 if(options.tree) e.treeNode = element;
690 options.droppables.push(e);
694 (Sortable.findTreeElements(element, options) || []).each( function(e) {
695 Droppables.add(e, options_for_tree);
696 e.treeNode = element;
697 options.droppables.push(e);
702 this.sortables[element.id] = options;
705 Draggables.addObserver(new SortableObserver(element, options.onUpdate));
709 // return all suitable-for-sortable elements in a guaranteed order
710 findElements: function(element, options) {
711 return Element.findChildren(
712 element, options.only, options.tree ? true : false, options.tag);
715 findTreeElements: function(element, options) {
716 return Element.findChildren(
717 element, options.only, options.tree ? true : false, options.treeTag);
720 onHover: function(element, dropon, overlap) {
721 if(Element.isParent(dropon, element)) return;
723 if(overlap > .33 && overlap < .66 && Sortable.options(dropon).tree) {
725 } else if(overlap>0.5) {
726 Sortable.mark(dropon, 'before');
727 if(dropon.previousSibling != element) {
728 var oldParentNode = element.parentNode;
729 element.style.visibility = "hidden"; // fix gecko rendering
730 dropon.parentNode.insertBefore(element, dropon);
731 if(dropon.parentNode!=oldParentNode)
732 Sortable.options(oldParentNode).onChange(element);
733 Sortable.options(dropon.parentNode).onChange(element);
736 Sortable.mark(dropon, 'after');
737 var nextElement = dropon.nextSibling || null;
738 if(nextElement != element) {
739 var oldParentNode = element.parentNode;
740 element.style.visibility = "hidden"; // fix gecko rendering
741 dropon.parentNode.insertBefore(element, nextElement);
742 if(dropon.parentNode!=oldParentNode)
743 Sortable.options(oldParentNode).onChange(element);
744 Sortable.options(dropon.parentNode).onChange(element);
749 onEmptyHover: function(element, dropon, overlap) {
750 var oldParentNode = element.parentNode;
751 var droponOptions = Sortable.options(dropon);
753 if(!Element.isParent(dropon, element)) {
756 var children = Sortable.findElements(dropon, {tag: droponOptions.tag, only: droponOptions.only});
760 var offset = Element.offsetSize(dropon, droponOptions.overlap) * (1.0 - overlap);
762 for (index = 0; index < children.length; index += 1) {
763 if (offset - Element.offsetSize (children[index], droponOptions.overlap) >= 0) {
764 offset -= Element.offsetSize (children[index], droponOptions.overlap);
765 } else if (offset - (Element.offsetSize (children[index], droponOptions.overlap) / 2) >= 0) {
766 child = index + 1 < children.length ? children[index + 1] : null;
769 child = children[index];
775 dropon.insertBefore(element, child);
777 Sortable.options(oldParentNode).onChange(element);
778 droponOptions.onChange(element);
783 if(Sortable._marker) Sortable._marker.hide();
786 mark: function(dropon, position) {
787 // mark on ghosting only
788 var sortable = Sortable.options(dropon.parentNode);
789 if(sortable && !sortable.ghosting) return;
791 if(!Sortable._marker) {
793 ($('dropmarker') || Element.extend(document.createElement('DIV'))).
794 hide().addClassName('dropmarker').setStyle({position:'absolute'});
795 document.getElementsByTagName("body").item(0).appendChild(Sortable._marker);
797 var offsets = Position.cumulativeOffset(dropon);
798 Sortable._marker.setStyle({left: offsets[0]+'px', top: offsets[1] + 'px'});
800 if(position=='after')
801 if(sortable.overlap == 'horizontal')
802 Sortable._marker.setStyle({left: (offsets[0]+dropon.clientWidth) + 'px'});
804 Sortable._marker.setStyle({top: (offsets[1]+dropon.clientHeight) + 'px'});
806 Sortable._marker.show();
809 _tree: function(element, options, parent) {
810 var children = Sortable.findElements(element, options) || [];
812 for (var i = 0; i < children.length; ++i) {
813 var match = children[i].id.match(options.format);
815 if (!match) continue;
818 id: encodeURIComponent(match ? match[1] : null),
822 position: parent.children.length,
823 container: $(children[i]).down(options.treeTag)
826 /* Get the element containing the children and recurse over it */
828 this._tree(child.container, options, child)
830 parent.children.push (child);
836 tree: function(element) {
837 element = $(element);
838 var sortableOptions = this.options(element);
839 var options = Object.extend({
840 tag: sortableOptions.tag,
841 treeTag: sortableOptions.treeTag,
842 only: sortableOptions.only,
844 format: sortableOptions.format
845 }, arguments[1] || {});
855 return Sortable._tree(element, options, root);
858 /* Construct a [i] index for a particular node */
859 _constructIndex: function(node) {
862 if (node.id) index = '[' + node.position + ']' + index;
863 } while ((node = node.parent) != null);
867 sequence: function(element) {
868 element = $(element);
869 var options = Object.extend(this.options(element), arguments[1] || {});
871 return $(this.findElements(element, options) || []).map( function(item) {
872 return item.id.match(options.format) ? item.id.match(options.format)[1] : '';
876 setSequence: function(element, new_sequence) {
877 element = $(element);
878 var options = Object.extend(this.options(element), arguments[2] || {});
881 this.findElements(element, options).each( function(n) {
882 if (n.id.match(options.format))
883 nodeMap[n.id.match(options.format)[1]] = [n, n.parentNode];
884 n.parentNode.removeChild(n);
887 new_sequence.each(function(ident) {
888 var n = nodeMap[ident];
890 n[1].appendChild(n[0]);
891 delete nodeMap[ident];
896 serialize: function(element) {
897 element = $(element);
898 var options = Object.extend(Sortable.options(element), arguments[1] || {});
899 var name = encodeURIComponent(
900 (arguments[1] && arguments[1].name) ? arguments[1].name : element.id);
903 return Sortable.tree(element, arguments[1]).children.map( function (item) {
904 return [name + Sortable._constructIndex(item) + "[id]=" +
905 encodeURIComponent(item.id)].concat(item.children.map(arguments.callee));
906 }).flatten().join('&');
908 return Sortable.sequence(element, arguments[1]).map( function(item) {
909 return name + "[]=" + encodeURIComponent(item);
915 // Returns true if child is contained within element
916 Element.isParent = function(child, element) {
917 if (!child.parentNode || child == element) return false;
918 if (child.parentNode == element) return true;
919 return Element.isParent(child.parentNode, element);
922 Element.findChildren = function(element, only, recursive, tagName) {
923 if(!element.hasChildNodes()) return null;
924 tagName = tagName.toUpperCase();
925 if(only) only = [only].flatten();
927 $A(element.childNodes).each( function(e) {
928 if(e.tagName && e.tagName.toUpperCase()==tagName &&
929 (!only || (Element.classNames(e).detect(function(v) { return only.include(v) }))))
932 var grandchildren = Element.findChildren(e, only, recursive, tagName);
933 if(grandchildren) elements.push(grandchildren);
937 return (elements.length>0 ? elements.flatten() : []);
940 Element.offsetSize = function (element, type) {
941 return element['offset' + ((type=='vertical' || type=='height') ? 'Height' : 'Width')];