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source: branches/2.3/themes/default/js/ui/jquery.ui.sortable.js @ 12526

Last change on this file since 12526 was 12526, checked in by patdenice, 12 years ago
merge r12525 from trunk to branch 2.3 feature:2487 Update jQuery to 1.6.4 and jQuery UI to 1.8.16
File size: 39.0 KB

Line
1	/*
2	* jQuery UI Sortable 1.8.16
3	*
4	* Copyright 2011, AUTHORS.txt (http://jqueryui.com/about)
5	* Dual licensed under the MIT or GPL Version 2 licenses.
6	* http://jquery.org/license
7	*
8	* http://docs.jquery.com/UI/Sortables
9	*
10	* Depends:
11	* jquery.ui.core.js
12	* jquery.ui.mouse.js
13	* jquery.ui.widget.js
14	*/
15	(function( $, undefined ) {
16
17	$.widget("ui.sortable", $.ui.mouse, {
18	widgetEventPrefix: "sort",
19	options: {
20	appendTo: "parent",
21	axis: false,
22	connectWith: false,
23	containment: false,
24	cursor: 'auto',
25	cursorAt: false,
26	dropOnEmpty: true,
27	forcePlaceholderSize: false,
28	forceHelperSize: false,
29	grid: false,
30	handle: false,
31	helper: "original",
32	items: '> *',
33	opacity: false,
34	placeholder: false,
35	revert: false,
36	scroll: true,
37	scrollSensitivity: 20,
38	scrollSpeed: 20,
39	scope: "default",
40	tolerance: "intersect",
41	zIndex: 1000
42	},
43	_create: function() {
44
45	var o = this.options;
46	this.containerCache = {};
47	this.element.addClass("ui-sortable");
48
49	//Get the items
50	this.refresh();
51
52	//Let's determine if the items are being displayed horizontally
53	this.floating = this.items.length ? o.axis === 'x' \|\| (/left\|right/).test(this.items[0].item.css('float')) \|\| (/inline\|table-cell/).test(this.items[0].item.css('display')) : false;
54
55	//Let's determine the parent's offset
56	this.offset = this.element.offset();
57
58	//Initialize mouse events for interaction
59	this._mouseInit();
60
61	},
62
63	destroy: function() {
64	this.element
65	.removeClass("ui-sortable ui-sortable-disabled")
66	.removeData("sortable")
67	.unbind(".sortable");
68	this._mouseDestroy();
69
70	for ( var i = this.items.length - 1; i >= 0; i-- )
71	this.items[i].item.removeData("sortable-item");
72
73	return this;
74	},
75
76	_setOption: function(key, value){
77	if ( key === "disabled" ) {
78	this.options[ key ] = value;
79
80	this.widget()
81	[ value ? "addClass" : "removeClass"]( "ui-sortable-disabled" );
82	} else {
83	// Don't call widget base _setOption for disable as it adds ui-state-disabled class
84	$.Widget.prototype._setOption.apply(this, arguments);
85	}
86	},
87
88	_mouseCapture: function(event, overrideHandle) {
89
90	if (this.reverting) {
91	return false;
92	}
93
94	if(this.options.disabled \|\| this.options.type == 'static') return false;
95
96	//We have to refresh the items data once first
97	this._refreshItems(event);
98
99	//Find out if the clicked node (or one of its parents) is a actual item in this.items
100	var currentItem = null, self = this, nodes = $(event.target).parents().each(function() {
101	if($.data(this, 'sortable-item') == self) {
102	currentItem = $(this);
103	return false;
104	}
105	});
106	if($.data(event.target, 'sortable-item') == self) currentItem = $(event.target);
107
108	if(!currentItem) return false;
109	if(this.options.handle && !overrideHandle) {
110	var validHandle = false;
111
112	$(this.options.handle, currentItem).find("*").andSelf().each(function() { if(this == event.target) validHandle = true; });
113	if(!validHandle) return false;
114	}
115
116	this.currentItem = currentItem;
117	this._removeCurrentsFromItems();
118	return true;
119
120	},
121
122	_mouseStart: function(event, overrideHandle, noActivation) {
123
124	var o = this.options, self = this;
125	this.currentContainer = this;
126
127	//We only need to call refreshPositions, because the refreshItems call has been moved to mouseCapture
128	this.refreshPositions();
129
130	//Create and append the visible helper
131	this.helper = this._createHelper(event);
132
133	//Cache the helper size
134	this._cacheHelperProportions();
135
136	/*
137	* - Position generation -
138	* This block generates everything position related - it's the core of draggables.
139	*/
140
141	//Cache the margins of the original element
142	this._cacheMargins();
143
144	//Get the next scrolling parent
145	this.scrollParent = this.helper.scrollParent();
146
147	//The element's absolute position on the page minus margins
148	this.offset = this.currentItem.offset();
149	this.offset = {
150	top: this.offset.top - this.margins.top,
151	left: this.offset.left - this.margins.left
152	};
153
154	// Only after we got the offset, we can change the helper's position to absolute
155	// TODO: Still need to figure out a way to make relative sorting possible
156	this.helper.css("position", "absolute");
157	this.cssPosition = this.helper.css("position");
158
159	$.extend(this.offset, {
160	click: { //Where the click happened, relative to the element
161	left: event.pageX - this.offset.left,
162	top: event.pageY - this.offset.top
163	},
164	parent: this._getParentOffset(),
165	relative: this._getRelativeOffset() //This is a relative to absolute position minus the actual position calculation - only used for relative positioned helper
166	});
167
168	//Generate the original position
169	this.originalPosition = this._generatePosition(event);
170	this.originalPageX = event.pageX;
171	this.originalPageY = event.pageY;
172
173	//Adjust the mouse offset relative to the helper if 'cursorAt' is supplied
174	(o.cursorAt && this._adjustOffsetFromHelper(o.cursorAt));
175
176	//Cache the former DOM position
177	this.domPosition = { prev: this.currentItem.prev()[0], parent: this.currentItem.parent()[0] };
178
179	//If the helper is not the original, hide the original so it's not playing any role during the drag, won't cause anything bad this way
180	if(this.helper[0] != this.currentItem[0]) {
181	this.currentItem.hide();
182	}
183
184	//Create the placeholder
185	this._createPlaceholder();
186
187	//Set a containment if given in the options
188	if(o.containment)
189	this._setContainment();
190
191	if(o.cursor) { // cursor option
192	if ($('body').css("cursor")) this._storedCursor = $('body').css("cursor");
193	$('body').css("cursor", o.cursor);
194	}
195
196	if(o.opacity) { // opacity option
197	if (this.helper.css("opacity")) this._storedOpacity = this.helper.css("opacity");
198	this.helper.css("opacity", o.opacity);
199	}
200
201	if(o.zIndex) { // zIndex option
202	if (this.helper.css("zIndex")) this._storedZIndex = this.helper.css("zIndex");
203	this.helper.css("zIndex", o.zIndex);
204	}
205
206	//Prepare scrolling
207	if(this.scrollParent[0] != document && this.scrollParent[0].tagName != 'HTML')
208	this.overflowOffset = this.scrollParent.offset();
209
210	//Call callbacks
211	this._trigger("start", event, this._uiHash());
212
213	//Recache the helper size
214	if(!this._preserveHelperProportions)
215	this._cacheHelperProportions();
216
217
218	//Post 'activate' events to possible containers
219	if(!noActivation) {
220	for (var i = this.containers.length - 1; i >= 0; i--) { this.containers[i]._trigger("activate", event, self._uiHash(this)); }
221	}
222
223	//Prepare possible droppables
224	if($.ui.ddmanager)
225	$.ui.ddmanager.current = this;
226
227	if ($.ui.ddmanager && !o.dropBehaviour)
228	$.ui.ddmanager.prepareOffsets(this, event);
229
230	this.dragging = true;
231
232	this.helper.addClass("ui-sortable-helper");
233	this._mouseDrag(event); //Execute the drag once - this causes the helper not to be visible before getting its correct position
234	return true;
235
236	},
237
238	_mouseDrag: function(event) {
239
240	//Compute the helpers position
241	this.position = this._generatePosition(event);
242	this.positionAbs = this._convertPositionTo("absolute");
243
244	if (!this.lastPositionAbs) {
245	this.lastPositionAbs = this.positionAbs;
246	}
247
248	//Do scrolling
249	if(this.options.scroll) {
250	var o = this.options, scrolled = false;
251	if(this.scrollParent[0] != document && this.scrollParent[0].tagName != 'HTML') {
252
253	if((this.overflowOffset.top + this.scrollParent[0].offsetHeight) - event.pageY < o.scrollSensitivity)
254	this.scrollParent[0].scrollTop = scrolled = this.scrollParent[0].scrollTop + o.scrollSpeed;
255	else if(event.pageY - this.overflowOffset.top < o.scrollSensitivity)
256	this.scrollParent[0].scrollTop = scrolled = this.scrollParent[0].scrollTop - o.scrollSpeed;
257
258	if((this.overflowOffset.left + this.scrollParent[0].offsetWidth) - event.pageX < o.scrollSensitivity)
259	this.scrollParent[0].scrollLeft = scrolled = this.scrollParent[0].scrollLeft + o.scrollSpeed;
260	else if(event.pageX - this.overflowOffset.left < o.scrollSensitivity)
261	this.scrollParent[0].scrollLeft = scrolled = this.scrollParent[0].scrollLeft - o.scrollSpeed;
262
263	} else {
264
265	if(event.pageY - $(document).scrollTop() < o.scrollSensitivity)
266	scrolled = $(document).scrollTop($(document).scrollTop() - o.scrollSpeed);
267	else if($(window).height() - (event.pageY - $(document).scrollTop()) < o.scrollSensitivity)
268	scrolled = $(document).scrollTop($(document).scrollTop() + o.scrollSpeed);
269
270	if(event.pageX - $(document).scrollLeft() < o.scrollSensitivity)
271	scrolled = $(document).scrollLeft($(document).scrollLeft() - o.scrollSpeed);
272	else if($(window).width() - (event.pageX - $(document).scrollLeft()) < o.scrollSensitivity)
273	scrolled = $(document).scrollLeft($(document).scrollLeft() + o.scrollSpeed);
274
275	}
276
277	if(scrolled !== false && $.ui.ddmanager && !o.dropBehaviour)
278	$.ui.ddmanager.prepareOffsets(this, event);
279	}
280
281	//Regenerate the absolute position used for position checks
282	this.positionAbs = this._convertPositionTo("absolute");
283
284	//Set the helper position
285	if(!this.options.axis \|\| this.options.axis != "y") this.helper[0].style.left = this.position.left+'px';
286	if(!this.options.axis \|\| this.options.axis != "x") this.helper[0].style.top = this.position.top+'px';
287
288	//Rearrange
289	for (var i = this.items.length - 1; i >= 0; i--) {
290
291	//Cache variables and intersection, continue if no intersection
292	var item = this.items[i], itemElement = item.item[0], intersection = this._intersectsWithPointer(item);
293	if (!intersection) continue;
294
295	if(itemElement != this.currentItem[0] //cannot intersect with itself
296	&& this.placeholder[intersection == 1 ? "next" : "prev"]()[0] != itemElement //no useless actions that have been done before
297	&& !$.ui.contains(this.placeholder[0], itemElement) //no action if the item moved is the parent of the item checked
298	&& (this.options.type == 'semi-dynamic' ? !$.ui.contains(this.element[0], itemElement) : true)
299	//&& itemElement.parentNode == this.placeholder[0].parentNode // only rearrange items within the same container
300	) {
301
302	this.direction = intersection == 1 ? "down" : "up";
303
304	if (this.options.tolerance == "pointer" \|\| this._intersectsWithSides(item)) {
305	this._rearrange(event, item);
306	} else {
307	break;
308	}
309
310	this._trigger("change", event, this._uiHash());
311	break;
312	}
313	}
314
315	//Post events to containers
316	this._contactContainers(event);
317
318	//Interconnect with droppables
319	if($.ui.ddmanager) $.ui.ddmanager.drag(this, event);
320
321	//Call callbacks
322	this._trigger('sort', event, this._uiHash());
323
324	this.lastPositionAbs = this.positionAbs;
325	return false;
326
327	},
328
329	_mouseStop: function(event, noPropagation) {
330
331	if(!event) return;
332
333	//If we are using droppables, inform the manager about the drop
334	if ($.ui.ddmanager && !this.options.dropBehaviour)
335	$.ui.ddmanager.drop(this, event);
336
337	if(this.options.revert) {
338	var self = this;
339	var cur = self.placeholder.offset();
340
341	self.reverting = true;
342
343	$(this.helper).animate({
344	left: cur.left - this.offset.parent.left - self.margins.left + (this.offsetParent[0] == document.body ? 0 : this.offsetParent[0].scrollLeft),
345	top: cur.top - this.offset.parent.top - self.margins.top + (this.offsetParent[0] == document.body ? 0 : this.offsetParent[0].scrollTop)
346	}, parseInt(this.options.revert, 10) \|\| 500, function() {
347	self._clear(event);
348	});
349	} else {
350	this._clear(event, noPropagation);
351	}
352
353	return false;
354
355	},
356
357	cancel: function() {
358
359	var self = this;
360
361	if(this.dragging) {
362
363	this._mouseUp({ target: null });
364
365	if(this.options.helper == "original")
366	this.currentItem.css(this._storedCSS).removeClass("ui-sortable-helper");
367	else
368	this.currentItem.show();
369
370	//Post deactivating events to containers
371	for (var i = this.containers.length - 1; i >= 0; i--){
372	this.containers[i]._trigger("deactivate", null, self._uiHash(this));
373	if(this.containers[i].containerCache.over) {
374	this.containers[i]._trigger("out", null, self._uiHash(this));
375	this.containers[i].containerCache.over = 0;
376	}
377	}
378
379	}
380
381	if (this.placeholder) {
382	//$(this.placeholder[0]).remove(); would have been the jQuery way - unfortunately, it unbinds ALL events from the original node!
383	if(this.placeholder[0].parentNode) this.placeholder[0].parentNode.removeChild(this.placeholder[0]);
384	if(this.options.helper != "original" && this.helper && this.helper[0].parentNode) this.helper.remove();
385
386	$.extend(this, {
387	helper: null,
388	dragging: false,
389	reverting: false,
390	_noFinalSort: null
391	});
392
393	if(this.domPosition.prev) {
394	$(this.domPosition.prev).after(this.currentItem);
395	} else {
396	$(this.domPosition.parent).prepend(this.currentItem);
397	}
398	}
399
400	return this;
401
402	},
403
404	serialize: function(o) {
405
406	var items = this._getItemsAsjQuery(o && o.connected);
407	var str = []; o = o \|\| {};
408
409	$(items).each(function() {
410	var res = ($(o.item \|\| this).attr(o.attribute \|\| 'id') \|\| '').match(o.expression \|\| (/(.+)[-=_](.+)/));
411	if(res) str.push((o.key \|\| res[1]+'[]')+'='+(o.key && o.expression ? res[1] : res[2]));
412	});
413
414	if(!str.length && o.key) {
415	str.push(o.key + '=');
416	}
417
418	return str.join('&');
419
420	},
421
422	toArray: function(o) {
423
424	var items = this._getItemsAsjQuery(o && o.connected);
425	var ret = []; o = o \|\| {};
426
427	items.each(function() { ret.push($(o.item \|\| this).attr(o.attribute \|\| 'id') \|\| ''); });
428	return ret;
429
430	},
431
432	/* Be careful with the following core functions */
433	_intersectsWith: function(item) {
434
435	var x1 = this.positionAbs.left,
436	x2 = x1 + this.helperProportions.width,
437	y1 = this.positionAbs.top,
438	y2 = y1 + this.helperProportions.height;
439
440	var l = item.left,
441	r = l + item.width,
442	t = item.top,
443	b = t + item.height;
444
445	var dyClick = this.offset.click.top,
446	dxClick = this.offset.click.left;
447
448	var isOverElement = (y1 + dyClick) > t && (y1 + dyClick) < b && (x1 + dxClick) > l && (x1 + dxClick) < r;
449
450	if( this.options.tolerance == "pointer"
451	\|\| this.options.forcePointerForContainers
452	\|\| (this.options.tolerance != "pointer" && this.helperProportions[this.floating ? 'width' : 'height'] > item[this.floating ? 'width' : 'height'])
453	) {
454	return isOverElement;
455	} else {
456
457	return (l < x1 + (this.helperProportions.width / 2) // Right Half
458	&& x2 - (this.helperProportions.width / 2) < r // Left Half
459	&& t < y1 + (this.helperProportions.height / 2) // Bottom Half
460	&& y2 - (this.helperProportions.height / 2) < b ); // Top Half
461
462	}
463	},
464
465	_intersectsWithPointer: function(item) {
466
467	var isOverElementHeight = $.ui.isOverAxis(this.positionAbs.top + this.offset.click.top, item.top, item.height),
468	isOverElementWidth = $.ui.isOverAxis(this.positionAbs.left + this.offset.click.left, item.left, item.width),
469	isOverElement = isOverElementHeight && isOverElementWidth,
470	verticalDirection = this._getDragVerticalDirection(),
471	horizontalDirection = this._getDragHorizontalDirection();
472
473	if (!isOverElement)
474	return false;
475
476	return this.floating ?
477	( ((horizontalDirection && horizontalDirection == "right") \|\| verticalDirection == "down") ? 2 : 1 )
478	: ( verticalDirection && (verticalDirection == "down" ? 2 : 1) );
479
480	},
481
482	_intersectsWithSides: function(item) {
483
484	var isOverBottomHalf = $.ui.isOverAxis(this.positionAbs.top + this.offset.click.top, item.top + (item.height/2), item.height),
485	isOverRightHalf = $.ui.isOverAxis(this.positionAbs.left + this.offset.click.left, item.left + (item.width/2), item.width),
486	verticalDirection = this._getDragVerticalDirection(),
487	horizontalDirection = this._getDragHorizontalDirection();
488
489	if (this.floating && horizontalDirection) {
490	return ((horizontalDirection == "right" && isOverRightHalf) \|\| (horizontalDirection == "left" && !isOverRightHalf));
491	} else {
492	return verticalDirection && ((verticalDirection == "down" && isOverBottomHalf) \|\| (verticalDirection == "up" && !isOverBottomHalf));
493	}
494
495	},
496
497	_getDragVerticalDirection: function() {
498	var delta = this.positionAbs.top - this.lastPositionAbs.top;
499	return delta != 0 && (delta > 0 ? "down" : "up");
500	},
501
502	_getDragHorizontalDirection: function() {
503	var delta = this.positionAbs.left - this.lastPositionAbs.left;
504	return delta != 0 && (delta > 0 ? "right" : "left");
505	},
506
507	refresh: function(event) {
508	this._refreshItems(event);
509	this.refreshPositions();
510	return this;
511	},
512
513	_connectWith: function() {
514	var options = this.options;
515	return options.connectWith.constructor == String
516	? [options.connectWith]
517	: options.connectWith;
518	},
519
520	_getItemsAsjQuery: function(connected) {
521
522	var self = this;
523	var items = [];
524	var queries = [];
525	var connectWith = this._connectWith();
526
527	if(connectWith && connected) {
528	for (var i = connectWith.length - 1; i >= 0; i--){
529	var cur = $(connectWith[i]);
530	for (var j = cur.length - 1; j >= 0; j--){
531	var inst = $.data(cur[j], 'sortable');
532	if(inst && inst != this && !inst.options.disabled) {
533	queries.push([$.isFunction(inst.options.items) ? inst.options.items.call(inst.element) : $(inst.options.items, inst.element).not(".ui-sortable-helper").not('.ui-sortable-placeholder'), inst]);
534	}
535	};
536	};
537	}
538
539	queries.push([$.isFunction(this.options.items) ? this.options.items.call(this.element, null, { options: this.options, item: this.currentItem }) : $(this.options.items, this.element).not(".ui-sortable-helper").not('.ui-sortable-placeholder'), this]);
540
541	for (var i = queries.length - 1; i >= 0; i--){
542	queries[i][0].each(function() {
543	items.push(this);
544	});
545	};
546
547	return $(items);
548
549	},
550
551	_removeCurrentsFromItems: function() {
552
553	var list = this.currentItem.find(":data(sortable-item)");
554
555	for (var i=0; i < this.items.length; i++) {
556
557	for (var j=0; j < list.length; j++) {
558	if(list[j] == this.items[i].item[0])
559	this.items.splice(i,1);
560	};
561
562	};
563
564	},
565
566	_refreshItems: function(event) {
567
568	this.items = [];
569	this.containers = [this];
570	var items = this.items;
571	var self = this;
572	var queries = [[$.isFunction(this.options.items) ? this.options.items.call(this.element[0], event, { item: this.currentItem }) : $(this.options.items, this.element), this]];
573	var connectWith = this._connectWith();
574
575	if(connectWith) {
576	for (var i = connectWith.length - 1; i >= 0; i--){
577	var cur = $(connectWith[i]);
578	for (var j = cur.length - 1; j >= 0; j--){
579	var inst = $.data(cur[j], 'sortable');
580	if(inst && inst != this && !inst.options.disabled) {
581	queries.push([$.isFunction(inst.options.items) ? inst.options.items.call(inst.element[0], event, { item: this.currentItem }) : $(inst.options.items, inst.element), inst]);
582	this.containers.push(inst);
583	}
584	};
585	};
586	}
587
588	for (var i = queries.length - 1; i >= 0; i--) {
589	var targetData = queries[i][1];
590	var _queries = queries[i][0];
591
592	for (var j=0, queriesLength = _queries.length; j < queriesLength; j++) {
593	var item = $(_queries[j]);
594
595	item.data('sortable-item', targetData); // Data for target checking (mouse manager)
596
597	items.push({
598	item: item,
599	instance: targetData,
600	width: 0, height: 0,
601	left: 0, top: 0
602	});
603	};
604	};
605
606	},
607
608	refreshPositions: function(fast) {
609
610	//This has to be redone because due to the item being moved out/into the offsetParent, the offsetParent's position will change
611	if(this.offsetParent && this.helper) {
612	this.offset.parent = this._getParentOffset();
613	}
614
615	for (var i = this.items.length - 1; i >= 0; i--){
616	var item = this.items[i];
617
618	//We ignore calculating positions of all connected containers when we're not over them
619	if(item.instance != this.currentContainer && this.currentContainer && item.item[0] != this.currentItem[0])
620	continue;
621
622	var t = this.options.toleranceElement ? $(this.options.toleranceElement, item.item) : item.item;
623
624	if (!fast) {
625	item.width = t.outerWidth();
626	item.height = t.outerHeight();
627	}
628
629	var p = t.offset();
630	item.left = p.left;
631	item.top = p.top;
632	};
633
634	if(this.options.custom && this.options.custom.refreshContainers) {
635	this.options.custom.refreshContainers.call(this);
636	} else {
637	for (var i = this.containers.length - 1; i >= 0; i--){
638	var p = this.containers[i].element.offset();
639	this.containers[i].containerCache.left = p.left;
640	this.containers[i].containerCache.top = p.top;
641	this.containers[i].containerCache.width = this.containers[i].element.outerWidth();
642	this.containers[i].containerCache.height = this.containers[i].element.outerHeight();
643	};
644	}
645
646	return this;
647	},
648
649	_createPlaceholder: function(that) {
650
651	var self = that \|\| this, o = self.options;
652
653	if(!o.placeholder \|\| o.placeholder.constructor == String) {
654	var className = o.placeholder;
655	o.placeholder = {
656	element: function() {
657
658	var el = $(document.createElement(self.currentItem[0].nodeName))
659	.addClass(className \|\| self.currentItem[0].className+" ui-sortable-placeholder")
660	.removeClass("ui-sortable-helper")[0];
661
662	if(!className)
663	el.style.visibility = "hidden";
664
665	return el;
666	},
667	update: function(container, p) {
668
669	// 1. If a className is set as 'placeholder option, we don't force sizes - the class is responsible for that
670	// 2. The option 'forcePlaceholderSize can be enabled to force it even if a class name is specified
671	if(className && !o.forcePlaceholderSize) return;
672
673	//If the element doesn't have a actual height by itself (without styles coming from a stylesheet), it receives the inline height from the dragged item
674	if(!p.height()) { p.height(self.currentItem.innerHeight() - parseInt(self.currentItem.css('paddingTop')\|\|0, 10) - parseInt(self.currentItem.css('paddingBottom')\|\|0, 10)); };
675	if(!p.width()) { p.width(self.currentItem.innerWidth() - parseInt(self.currentItem.css('paddingLeft')\|\|0, 10) - parseInt(self.currentItem.css('paddingRight')\|\|0, 10)); };
676	}
677	};
678	}
679
680	//Create the placeholder
681	self.placeholder = $(o.placeholder.element.call(self.element, self.currentItem));
682
683	//Append it after the actual current item
684	self.currentItem.after(self.placeholder);
685
686	//Update the size of the placeholder (TODO: Logic to fuzzy, see line 316/317)
687	o.placeholder.update(self, self.placeholder);
688
689	},
690
691	_contactContainers: function(event) {
692
693	// get innermost container that intersects with item
694	var innermostContainer = null, innermostIndex = null;
695
696
697	for (var i = this.containers.length - 1; i >= 0; i--){
698
699	// never consider a container that's located within the item itself
700	if($.ui.contains(this.currentItem[0], this.containers[i].element[0]))
701	continue;
702
703	if(this._intersectsWith(this.containers[i].containerCache)) {
704
705	// if we've already found a container and it's more "inner" than this, then continue
706	if(innermostContainer && $.ui.contains(this.containers[i].element[0], innermostContainer.element[0]))
707	continue;
708
709	innermostContainer = this.containers[i];
710	innermostIndex = i;
711
712	} else {
713	// container doesn't intersect. trigger "out" event if necessary
714	if(this.containers[i].containerCache.over) {
715	this.containers[i]._trigger("out", event, this._uiHash(this));
716	this.containers[i].containerCache.over = 0;
717	}
718	}
719
720	}
721
722	// if no intersecting containers found, return
723	if(!innermostContainer) return;
724
725	// move the item into the container if it's not there already
726	if(this.containers.length === 1) {
727	this.containers[innermostIndex]._trigger("over", event, this._uiHash(this));
728	this.containers[innermostIndex].containerCache.over = 1;
729	} else if(this.currentContainer != this.containers[innermostIndex]) {
730
731	//When entering a new container, we will find the item with the least distance and append our item near it
732	var dist = 10000; var itemWithLeastDistance = null; var base = this.positionAbs[this.containers[innermostIndex].floating ? 'left' : 'top'];
733	for (var j = this.items.length - 1; j >= 0; j--) {
734	if(!$.ui.contains(this.containers[innermostIndex].element[0], this.items[j].item[0])) continue;
735	var cur = this.items[j][this.containers[innermostIndex].floating ? 'left' : 'top'];
736	if(Math.abs(cur - base) < dist) {
737	dist = Math.abs(cur - base); itemWithLeastDistance = this.items[j];
738	}
739	}
740
741	if(!itemWithLeastDistance && !this.options.dropOnEmpty) //Check if dropOnEmpty is enabled
742	return;
743
744	this.currentContainer = this.containers[innermostIndex];
745	itemWithLeastDistance ? this._rearrange(event, itemWithLeastDistance, null, true) : this._rearrange(event, null, this.containers[innermostIndex].element, true);
746	this._trigger("change", event, this._uiHash());
747	this.containers[innermostIndex]._trigger("change", event, this._uiHash(this));
748
749	//Update the placeholder
750	this.options.placeholder.update(this.currentContainer, this.placeholder);
751
752	this.containers[innermostIndex]._trigger("over", event, this._uiHash(this));
753	this.containers[innermostIndex].containerCache.over = 1;
754	}
755
756
757	},
758
759	_createHelper: function(event) {
760
761	var o = this.options;
762	var helper = $.isFunction(o.helper) ? $(o.helper.apply(this.element[0], [event, this.currentItem])) : (o.helper == 'clone' ? this.currentItem.clone() : this.currentItem);
763
764	if(!helper.parents('body').length) //Add the helper to the DOM if that didn't happen already
765	$(o.appendTo != 'parent' ? o.appendTo : this.currentItem[0].parentNode)[0].appendChild(helper[0]);
766
767	if(helper[0] == this.currentItem[0])
768	this._storedCSS = { width: this.currentItem[0].style.width, height: this.currentItem[0].style.height, position: this.currentItem.css("position"), top: this.currentItem.css("top"), left: this.currentItem.css("left") };
769
770	if(helper[0].style.width == '' \|\| o.forceHelperSize) helper.width(this.currentItem.width());
771	if(helper[0].style.height == '' \|\| o.forceHelperSize) helper.height(this.currentItem.height());
772
773	return helper;
774
775	},
776
777	_adjustOffsetFromHelper: function(obj) {
778	if (typeof obj == 'string') {
779	obj = obj.split(' ');
780	}
781	if ($.isArray(obj)) {
782	obj = {left: +obj[0], top: +obj[1] \|\| 0};
783	}
784	if ('left' in obj) {
785	this.offset.click.left = obj.left + this.margins.left;
786	}
787	if ('right' in obj) {
788	this.offset.click.left = this.helperProportions.width - obj.right + this.margins.left;
789	}
790	if ('top' in obj) {
791	this.offset.click.top = obj.top + this.margins.top;
792	}
793	if ('bottom' in obj) {
794	this.offset.click.top = this.helperProportions.height - obj.bottom + this.margins.top;
795	}
796	},
797
798	_getParentOffset: function() {
799
800
801	//Get the offsetParent and cache its position
802	this.offsetParent = this.helper.offsetParent();
803	var po = this.offsetParent.offset();
804
805	// This is a special case where we need to modify a offset calculated on start, since the following happened:
806	// 1. The position of the helper is absolute, so it's position is calculated based on the next positioned parent
807	// 2. The actual offset parent is a child of the scroll parent, and the scroll parent isn't the document, which means that
808	// the scroll is included in the initial calculation of the offset of the parent, and never recalculated upon drag
809	if(this.cssPosition == 'absolute' && this.scrollParent[0] != document && $.ui.contains(this.scrollParent[0], this.offsetParent[0])) {
810	po.left += this.scrollParent.scrollLeft();
811	po.top += this.scrollParent.scrollTop();
812	}
813
814	if((this.offsetParent[0] == document.body) //This needs to be actually done for all browsers, since pageX/pageY includes this information
815	\|\| (this.offsetParent[0].tagName && this.offsetParent[0].tagName.toLowerCase() == 'html' && $.browser.msie)) //Ugly IE fix
816	po = { top: 0, left: 0 };
817
818	return {
819	top: po.top + (parseInt(this.offsetParent.css("borderTopWidth"),10) \|\| 0),
820	left: po.left + (parseInt(this.offsetParent.css("borderLeftWidth"),10) \|\| 0)
821	};
822
823	},
824
825	_getRelativeOffset: function() {
826
827	if(this.cssPosition == "relative") {
828	var p = this.currentItem.position();
829	return {
830	top: p.top - (parseInt(this.helper.css("top"),10) \|\| 0) + this.scrollParent.scrollTop(),
831	left: p.left - (parseInt(this.helper.css("left"),10) \|\| 0) + this.scrollParent.scrollLeft()
832	};
833	} else {
834	return { top: 0, left: 0 };
835	}
836
837	},
838
839	_cacheMargins: function() {
840	this.margins = {
841	left: (parseInt(this.currentItem.css("marginLeft"),10) \|\| 0),
842	top: (parseInt(this.currentItem.css("marginTop"),10) \|\| 0)
843	};
844	},
845
846	_cacheHelperProportions: function() {
847	this.helperProportions = {
848	width: this.helper.outerWidth(),
849	height: this.helper.outerHeight()
850	};
851	},
852
853	_setContainment: function() {
854
855	var o = this.options;
856	if(o.containment == 'parent') o.containment = this.helper[0].parentNode;
857	if(o.containment == 'document' \|\| o.containment == 'window') this.containment = [
858	0 - this.offset.relative.left - this.offset.parent.left,
859	0 - this.offset.relative.top - this.offset.parent.top,
860	$(o.containment == 'document' ? document : window).width() - this.helperProportions.width - this.margins.left,
861	($(o.containment == 'document' ? document : window).height() \|\| document.body.parentNode.scrollHeight) - this.helperProportions.height - this.margins.top
862	];
863
864	if(!(/^(document\|window\|parent)$/).test(o.containment)) {
865	var ce = $(o.containment)[0];
866	var co = $(o.containment).offset();
867	var over = ($(ce).css("overflow") != 'hidden');
868
869	this.containment = [
870	co.left + (parseInt($(ce).css("borderLeftWidth"),10) \|\| 0) + (parseInt($(ce).css("paddingLeft"),10) \|\| 0) - this.margins.left,
871	co.top + (parseInt($(ce).css("borderTopWidth"),10) \|\| 0) + (parseInt($(ce).css("paddingTop"),10) \|\| 0) - this.margins.top,
872	co.left+(over ? Math.max(ce.scrollWidth,ce.offsetWidth) : ce.offsetWidth) - (parseInt($(ce).css("borderLeftWidth"),10) \|\| 0) - (parseInt($(ce).css("paddingRight"),10) \|\| 0) - this.helperProportions.width - this.margins.left,
873	co.top+(over ? Math.max(ce.scrollHeight,ce.offsetHeight) : ce.offsetHeight) - (parseInt($(ce).css("borderTopWidth"),10) \|\| 0) - (parseInt($(ce).css("paddingBottom"),10) \|\| 0) - this.helperProportions.height - this.margins.top
874	];
875	}
876
877	},
878
879	_convertPositionTo: function(d, pos) {
880
881	if(!pos) pos = this.position;
882	var mod = d == "absolute" ? 1 : -1;
883	var o = this.options, scroll = this.cssPosition == 'absolute' && !(this.scrollParent[0] != document && $.ui.contains(this.scrollParent[0], this.offsetParent[0])) ? this.offsetParent : this.scrollParent, scrollIsRootNode = (/(html\|body)/i).test(scroll[0].tagName);
884
885	return {
886	top: (
887	pos.top // The absolute mouse position
888	+ this.offset.relative.top * mod // Only for relative positioned nodes: Relative offset from element to offset parent
889	+ this.offset.parent.top * mod // The offsetParent's offset without borders (offset + border)
890	- ($.browser.safari && this.cssPosition == 'fixed' ? 0 : ( this.cssPosition == 'fixed' ? -this.scrollParent.scrollTop() : ( scrollIsRootNode ? 0 : scroll.scrollTop() ) ) * mod)
891	),
892	left: (
893	pos.left // The absolute mouse position
894	+ this.offset.relative.left * mod // Only for relative positioned nodes: Relative offset from element to offset parent
895	+ this.offset.parent.left * mod // The offsetParent's offset without borders (offset + border)
896	- ($.browser.safari && this.cssPosition == 'fixed' ? 0 : ( this.cssPosition == 'fixed' ? -this.scrollParent.scrollLeft() : scrollIsRootNode ? 0 : scroll.scrollLeft() ) * mod)
897	)
898	};
899
900	},
901
902	_generatePosition: function(event) {
903
904	var o = this.options, scroll = this.cssPosition == 'absolute' && !(this.scrollParent[0] != document && $.ui.contains(this.scrollParent[0], this.offsetParent[0])) ? this.offsetParent : this.scrollParent, scrollIsRootNode = (/(html\|body)/i).test(scroll[0].tagName);
905
906	// This is another very weird special case that only happens for relative elements:
907	// 1. If the css position is relative
908	// 2. and the scroll parent is the document or similar to the offset parent
909	// we have to refresh the relative offset during the scroll so there are no jumps
910	if(this.cssPosition == 'relative' && !(this.scrollParent[0] != document && this.scrollParent[0] != this.offsetParent[0])) {
911	this.offset.relative = this._getRelativeOffset();
912	}
913
914	var pageX = event.pageX;
915	var pageY = event.pageY;
916
917	/*
918	* - Position constraining -
919	* Constrain the position to a mix of grid, containment.
920	*/
921
922	if(this.originalPosition) { //If we are not dragging yet, we won't check for options
923
924	if(this.containment) {
925	if(event.pageX - this.offset.click.left < this.containment[0]) pageX = this.containment[0] + this.offset.click.left;
926	if(event.pageY - this.offset.click.top < this.containment[1]) pageY = this.containment[1] + this.offset.click.top;
927	if(event.pageX - this.offset.click.left > this.containment[2]) pageX = this.containment[2] + this.offset.click.left;
928	if(event.pageY - this.offset.click.top > this.containment[3]) pageY = this.containment[3] + this.offset.click.top;
929	}
930
931	if(o.grid) {
932	var top = this.originalPageY + Math.round((pageY - this.originalPageY) / o.grid[1]) * o.grid[1];
933	pageY = this.containment ? (!(top - this.offset.click.top < this.containment[1] \|\| top - this.offset.click.top > this.containment[3]) ? top : (!(top - this.offset.click.top < this.containment[1]) ? top - o.grid[1] : top + o.grid[1])) : top;
934
935	var left = this.originalPageX + Math.round((pageX - this.originalPageX) / o.grid[0]) * o.grid[0];
936	pageX = this.containment ? (!(left - this.offset.click.left < this.containment[0] \|\| left - this.offset.click.left > this.containment[2]) ? left : (!(left - this.offset.click.left < this.containment[0]) ? left - o.grid[0] : left + o.grid[0])) : left;
937	}
938
939	}
940
941	return {
942	top: (
943	pageY // The absolute mouse position
944	- this.offset.click.top // Click offset (relative to the element)
945	- this.offset.relative.top // Only for relative positioned nodes: Relative offset from element to offset parent
946	- this.offset.parent.top // The offsetParent's offset without borders (offset + border)
947	+ ($.browser.safari && this.cssPosition == 'fixed' ? 0 : ( this.cssPosition == 'fixed' ? -this.scrollParent.scrollTop() : ( scrollIsRootNode ? 0 : scroll.scrollTop() ) ))
948	),
949	left: (
950	pageX // The absolute mouse position
951	- this.offset.click.left // Click offset (relative to the element)
952	- this.offset.relative.left // Only for relative positioned nodes: Relative offset from element to offset parent
953	- this.offset.parent.left // The offsetParent's offset without borders (offset + border)
954	+ ($.browser.safari && this.cssPosition == 'fixed' ? 0 : ( this.cssPosition == 'fixed' ? -this.scrollParent.scrollLeft() : scrollIsRootNode ? 0 : scroll.scrollLeft() ))
955	)
956	};
957
958	},
959
960	_rearrange: function(event, i, a, hardRefresh) {
961
962	a ? a[0].appendChild(this.placeholder[0]) : i.item[0].parentNode.insertBefore(this.placeholder[0], (this.direction == 'down' ? i.item[0] : i.item[0].nextSibling));
963
964	//Various things done here to improve the performance:
965	// 1. we create a setTimeout, that calls refreshPositions
966	// 2. on the instance, we have a counter variable, that get's higher after every append
967	// 3. on the local scope, we copy the counter variable, and check in the timeout, if it's still the same
968	// 4. this lets only the last addition to the timeout stack through
969	this.counter = this.counter ? ++this.counter : 1;
970	var self = this, counter = this.counter;
971
972	window.setTimeout(function() {
973	if(counter == self.counter) self.refreshPositions(!hardRefresh); //Precompute after each DOM insertion, NOT on mousemove
974	},0);
975
976	},
977
978	_clear: function(event, noPropagation) {
979
980	this.reverting = false;
981	// We delay all events that have to be triggered to after the point where the placeholder has been removed and
982	// everything else normalized again
983	var delayedTriggers = [], self = this;
984
985	// We first have to update the dom position of the actual currentItem
986	// Note: don't do it if the current item is already removed (by a user), or it gets reappended (see #4088)
987	if(!this._noFinalSort && this.currentItem.parent().length) this.placeholder.before(this.currentItem);
988	this._noFinalSort = null;
989
990	if(this.helper[0] == this.currentItem[0]) {
991	for(var i in this._storedCSS) {
992	if(this._storedCSS[i] == 'auto' \|\| this._storedCSS[i] == 'static') this._storedCSS[i] = '';
993	}
994	this.currentItem.css(this._storedCSS).removeClass("ui-sortable-helper");
995	} else {
996	this.currentItem.show();
997	}
998
999	if(this.fromOutside && !noPropagation) delayedTriggers.push(function(event) { this._trigger("receive", event, this._uiHash(this.fromOutside)); });
1000	if((this.fromOutside \|\| this.domPosition.prev != this.currentItem.prev().not(".ui-sortable-helper")[0] \|\| this.domPosition.parent != this.currentItem.parent()[0]) && !noPropagation) delayedTriggers.push(function(event) { this._trigger("update", event, this._uiHash()); }); //Trigger update callback if the DOM position has changed
1001	if(!$.ui.contains(this.element[0], this.currentItem[0])) { //Node was moved out of the current element
1002	if(!noPropagation) delayedTriggers.push(function(event) { this._trigger("remove", event, this._uiHash()); });
1003	for (var i = this.containers.length - 1; i >= 0; i--){
1004	if($.ui.contains(this.containers[i].element[0], this.currentItem[0]) && !noPropagation) {
1005	delayedTriggers.push((function(c) { return function(event) { c._trigger("receive", event, this._uiHash(this)); }; }).call(this, this.containers[i]));
1006	delayedTriggers.push((function(c) { return function(event) { c._trigger("update", event, this._uiHash(this)); }; }).call(this, this.containers[i]));
1007	}
1008	};
1009	};
1010
1011	//Post events to containers
1012	for (var i = this.containers.length - 1; i >= 0; i--){
1013	if(!noPropagation) delayedTriggers.push((function(c) { return function(event) { c._trigger("deactivate", event, this._uiHash(this)); }; }).call(this, this.containers[i]));
1014	if(this.containers[i].containerCache.over) {
1015	delayedTriggers.push((function(c) { return function(event) { c._trigger("out", event, this._uiHash(this)); }; }).call(this, this.containers[i]));
1016	this.containers[i].containerCache.over = 0;
1017	}
1018	}
1019
1020	//Do what was originally in plugins
1021	if(this._storedCursor) $('body').css("cursor", this._storedCursor); //Reset cursor
1022	if(this._storedOpacity) this.helper.css("opacity", this._storedOpacity); //Reset opacity
1023	if(this._storedZIndex) this.helper.css("zIndex", this._storedZIndex == 'auto' ? '' : this._storedZIndex); //Reset z-index
1024
1025	this.dragging = false;
1026	if(this.cancelHelperRemoval) {
1027	if(!noPropagation) {
1028	this._trigger("beforeStop", event, this._uiHash());
1029	for (var i=0; i < delayedTriggers.length; i++) { delayedTriggers[i].call(this, event); }; //Trigger all delayed events
1030	this._trigger("stop", event, this._uiHash());
1031	}
1032	return false;
1033	}
1034
1035	if(!noPropagation) this._trigger("beforeStop", event, this._uiHash());
1036
1037	//$(this.placeholder[0]).remove(); would have been the jQuery way - unfortunately, it unbinds ALL events from the original node!
1038	this.placeholder[0].parentNode.removeChild(this.placeholder[0]);
1039
1040	if(this.helper[0] != this.currentItem[0]) this.helper.remove(); this.helper = null;
1041
1042	if(!noPropagation) {
1043	for (var i=0; i < delayedTriggers.length; i++) { delayedTriggers[i].call(this, event); }; //Trigger all delayed events
1044	this._trigger("stop", event, this._uiHash());
1045	}
1046
1047	this.fromOutside = false;
1048	return true;
1049
1050	},
1051
1052	_trigger: function() {
1053	if ($.Widget.prototype._trigger.apply(this, arguments) === false) {
1054	this.cancel();
1055	}
1056	},
1057
1058	_uiHash: function(inst) {
1059	var self = inst \|\| this;
1060	return {
1061	helper: self.helper,
1062	placeholder: self.placeholder \|\| $([]),
1063	position: self.position,
1064	originalPosition: self.originalPosition,
1065	offset: self.positionAbs,
1066	item: self.currentItem,
1067	sender: inst ? inst.element : null
1068	};
1069	}
1070
1071	});
1072
1073	$.extend($.ui.sortable, {
1074	version: "1.8.16"
1075	});
1076
1077	})(jQuery);

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