and a note on manual changes in dataTables.bootstrap.css
[myslice.git] / third-party / jquery-ui-1.10.2 / ui / jquery.ui.sortable.js
1 /*!
2  * jQuery UI Sortable 1.10.2
3  * http://jqueryui.com
4  *
5  * Copyright 2013 jQuery Foundation and other contributors
6  * Released under the MIT license.
7  * http://jquery.org/license
8  *
9  * http://api.jqueryui.com/sortable/
10  *
11  * Depends:
12  *      jquery.ui.core.js
13  *      jquery.ui.mouse.js
14  *      jquery.ui.widget.js
15  */
16 (function( $, undefined ) {
17
18 /*jshint loopfunc: true */
19
20 function isOverAxis( x, reference, size ) {
21         return ( x > reference ) && ( x < ( reference + size ) );
22 }
23
24 function isFloating(item) {
25         return (/left|right/).test(item.css("float")) || (/inline|table-cell/).test(item.css("display"));
26 }
27
28 $.widget("ui.sortable", $.ui.mouse, {
29         version: "1.10.2",
30         widgetEventPrefix: "sort",
31         ready: false,
32         options: {
33                 appendTo: "parent",
34                 axis: false,
35                 connectWith: false,
36                 containment: false,
37                 cursor: "auto",
38                 cursorAt: false,
39                 dropOnEmpty: true,
40                 forcePlaceholderSize: false,
41                 forceHelperSize: false,
42                 grid: false,
43                 handle: false,
44                 helper: "original",
45                 items: "> *",
46                 opacity: false,
47                 placeholder: false,
48                 revert: false,
49                 scroll: true,
50                 scrollSensitivity: 20,
51                 scrollSpeed: 20,
52                 scope: "default",
53                 tolerance: "intersect",
54                 zIndex: 1000,
55
56                 // callbacks
57                 activate: null,
58                 beforeStop: null,
59                 change: null,
60                 deactivate: null,
61                 out: null,
62                 over: null,
63                 receive: null,
64                 remove: null,
65                 sort: null,
66                 start: null,
67                 stop: null,
68                 update: null
69         },
70         _create: function() {
71
72                 var o = this.options;
73                 this.containerCache = {};
74                 this.element.addClass("ui-sortable");
75
76                 //Get the items
77                 this.refresh();
78
79                 //Let's determine if the items are being displayed horizontally
80                 this.floating = this.items.length ? o.axis === "x" || isFloating(this.items[0].item) : false;
81
82                 //Let's determine the parent's offset
83                 this.offset = this.element.offset();
84
85                 //Initialize mouse events for interaction
86                 this._mouseInit();
87
88                 //We're ready to go
89                 this.ready = true;
90
91         },
92
93         _destroy: function() {
94                 this.element
95                         .removeClass("ui-sortable ui-sortable-disabled");
96                 this._mouseDestroy();
97
98                 for ( var i = this.items.length - 1; i >= 0; i-- ) {
99                         this.items[i].item.removeData(this.widgetName + "-item");
100                 }
101
102                 return this;
103         },
104
105         _setOption: function(key, value){
106                 if ( key === "disabled" ) {
107                         this.options[ key ] = value;
108
109                         this.widget().toggleClass( "ui-sortable-disabled", !!value );
110                 } else {
111                         // Don't call widget base _setOption for disable as it adds ui-state-disabled class
112                         $.Widget.prototype._setOption.apply(this, arguments);
113                 }
114         },
115
116         _mouseCapture: function(event, overrideHandle) {
117                 var currentItem = null,
118                         validHandle = false,
119                         that = this;
120
121                 if (this.reverting) {
122                         return false;
123                 }
124
125                 if(this.options.disabled || this.options.type === "static") {
126                         return false;
127                 }
128
129                 //We have to refresh the items data once first
130                 this._refreshItems(event);
131
132                 //Find out if the clicked node (or one of its parents) is a actual item in this.items
133                 $(event.target).parents().each(function() {
134                         if($.data(this, that.widgetName + "-item") === that) {
135                                 currentItem = $(this);
136                                 return false;
137                         }
138                 });
139                 if($.data(event.target, that.widgetName + "-item") === that) {
140                         currentItem = $(event.target);
141                 }
142
143                 if(!currentItem) {
144                         return false;
145                 }
146                 if(this.options.handle && !overrideHandle) {
147                         $(this.options.handle, currentItem).find("*").addBack().each(function() {
148                                 if(this === event.target) {
149                                         validHandle = true;
150                                 }
151                         });
152                         if(!validHandle) {
153                                 return false;
154                         }
155                 }
156
157                 this.currentItem = currentItem;
158                 this._removeCurrentsFromItems();
159                 return true;
160
161         },
162
163         _mouseStart: function(event, overrideHandle, noActivation) {
164
165                 var i, body,
166                         o = this.options;
167
168                 this.currentContainer = this;
169
170                 //We only need to call refreshPositions, because the refreshItems call has been moved to mouseCapture
171                 this.refreshPositions();
172
173                 //Create and append the visible helper
174                 this.helper = this._createHelper(event);
175
176                 //Cache the helper size
177                 this._cacheHelperProportions();
178
179                 /*
180                  * - Position generation -
181                  * This block generates everything position related - it's the core of draggables.
182                  */
183
184                 //Cache the margins of the original element
185                 this._cacheMargins();
186
187                 //Get the next scrolling parent
188                 this.scrollParent = this.helper.scrollParent();
189
190                 //The element's absolute position on the page minus margins
191                 this.offset = this.currentItem.offset();
192                 this.offset = {
193                         top: this.offset.top - this.margins.top,
194                         left: this.offset.left - this.margins.left
195                 };
196
197                 $.extend(this.offset, {
198                         click: { //Where the click happened, relative to the element
199                                 left: event.pageX - this.offset.left,
200                                 top: event.pageY - this.offset.top
201                         },
202                         parent: this._getParentOffset(),
203                         relative: this._getRelativeOffset() //This is a relative to absolute position minus the actual position calculation - only used for relative positioned helper
204                 });
205
206                 // Only after we got the offset, we can change the helper's position to absolute
207                 // TODO: Still need to figure out a way to make relative sorting possible
208                 this.helper.css("position", "absolute");
209                 this.cssPosition = this.helper.css("position");
210
211                 //Generate the original position
212                 this.originalPosition = this._generatePosition(event);
213                 this.originalPageX = event.pageX;
214                 this.originalPageY = event.pageY;
215
216                 //Adjust the mouse offset relative to the helper if "cursorAt" is supplied
217                 (o.cursorAt && this._adjustOffsetFromHelper(o.cursorAt));
218
219                 //Cache the former DOM position
220                 this.domPosition = { prev: this.currentItem.prev()[0], parent: this.currentItem.parent()[0] };
221
222                 //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
223                 if(this.helper[0] !== this.currentItem[0]) {
224                         this.currentItem.hide();
225                 }
226
227                 //Create the placeholder
228                 this._createPlaceholder();
229
230                 //Set a containment if given in the options
231                 if(o.containment) {
232                         this._setContainment();
233                 }
234
235                 if( o.cursor && o.cursor !== "auto" ) { // cursor option
236                         body = this.document.find( "body" );
237
238                         // support: IE
239                         this.storedCursor = body.css( "cursor" );
240                         body.css( "cursor", o.cursor );
241
242                         this.storedStylesheet = $( "<style>*{ cursor: "+o.cursor+" !important; }</style>" ).appendTo( body );
243                 }
244
245                 if(o.opacity) { // opacity option
246                         if (this.helper.css("opacity")) {
247                                 this._storedOpacity = this.helper.css("opacity");
248                         }
249                         this.helper.css("opacity", o.opacity);
250                 }
251
252                 if(o.zIndex) { // zIndex option
253                         if (this.helper.css("zIndex")) {
254                                 this._storedZIndex = this.helper.css("zIndex");
255                         }
256                         this.helper.css("zIndex", o.zIndex);
257                 }
258
259                 //Prepare scrolling
260                 if(this.scrollParent[0] !== document && this.scrollParent[0].tagName !== "HTML") {
261                         this.overflowOffset = this.scrollParent.offset();
262                 }
263
264                 //Call callbacks
265                 this._trigger("start", event, this._uiHash());
266
267                 //Recache the helper size
268                 if(!this._preserveHelperProportions) {
269                         this._cacheHelperProportions();
270                 }
271
272
273                 //Post "activate" events to possible containers
274                 if( !noActivation ) {
275                         for ( i = this.containers.length - 1; i >= 0; i-- ) {
276                                 this.containers[ i ]._trigger( "activate", event, this._uiHash( this ) );
277                         }
278                 }
279
280                 //Prepare possible droppables
281                 if($.ui.ddmanager) {
282                         $.ui.ddmanager.current = this;
283                 }
284
285                 if ($.ui.ddmanager && !o.dropBehaviour) {
286                         $.ui.ddmanager.prepareOffsets(this, event);
287                 }
288
289                 this.dragging = true;
290
291                 this.helper.addClass("ui-sortable-helper");
292                 this._mouseDrag(event); //Execute the drag once - this causes the helper not to be visible before getting its correct position
293                 return true;
294
295         },
296
297         _mouseDrag: function(event) {
298                 var i, item, itemElement, intersection,
299                         o = this.options,
300                         scrolled = false;
301
302                 //Compute the helpers position
303                 this.position = this._generatePosition(event);
304                 this.positionAbs = this._convertPositionTo("absolute");
305
306                 if (!this.lastPositionAbs) {
307                         this.lastPositionAbs = this.positionAbs;
308                 }
309
310                 //Do scrolling
311                 if(this.options.scroll) {
312                         if(this.scrollParent[0] !== document && this.scrollParent[0].tagName !== "HTML") {
313
314                                 if((this.overflowOffset.top + this.scrollParent[0].offsetHeight) - event.pageY < o.scrollSensitivity) {
315                                         this.scrollParent[0].scrollTop = scrolled = this.scrollParent[0].scrollTop + o.scrollSpeed;
316                                 } else if(event.pageY - this.overflowOffset.top < o.scrollSensitivity) {
317                                         this.scrollParent[0].scrollTop = scrolled = this.scrollParent[0].scrollTop - o.scrollSpeed;
318                                 }
319
320                                 if((this.overflowOffset.left + this.scrollParent[0].offsetWidth) - event.pageX < o.scrollSensitivity) {
321                                         this.scrollParent[0].scrollLeft = scrolled = this.scrollParent[0].scrollLeft + o.scrollSpeed;
322                                 } else if(event.pageX - this.overflowOffset.left < o.scrollSensitivity) {
323                                         this.scrollParent[0].scrollLeft = scrolled = this.scrollParent[0].scrollLeft - o.scrollSpeed;
324                                 }
325
326                         } else {
327
328                                 if(event.pageY - $(document).scrollTop() < o.scrollSensitivity) {
329                                         scrolled = $(document).scrollTop($(document).scrollTop() - o.scrollSpeed);
330                                 } else if($(window).height() - (event.pageY - $(document).scrollTop()) < o.scrollSensitivity) {
331                                         scrolled = $(document).scrollTop($(document).scrollTop() + o.scrollSpeed);
332                                 }
333
334                                 if(event.pageX - $(document).scrollLeft() < o.scrollSensitivity) {
335                                         scrolled = $(document).scrollLeft($(document).scrollLeft() - o.scrollSpeed);
336                                 } else if($(window).width() - (event.pageX - $(document).scrollLeft()) < o.scrollSensitivity) {
337                                         scrolled = $(document).scrollLeft($(document).scrollLeft() + o.scrollSpeed);
338                                 }
339
340                         }
341
342                         if(scrolled !== false && $.ui.ddmanager && !o.dropBehaviour) {
343                                 $.ui.ddmanager.prepareOffsets(this, event);
344                         }
345                 }
346
347                 //Regenerate the absolute position used for position checks
348                 this.positionAbs = this._convertPositionTo("absolute");
349
350                 //Set the helper position
351                 if(!this.options.axis || this.options.axis !== "y") {
352                         this.helper[0].style.left = this.position.left+"px";
353                 }
354                 if(!this.options.axis || this.options.axis !== "x") {
355                         this.helper[0].style.top = this.position.top+"px";
356                 }
357
358                 //Rearrange
359                 for (i = this.items.length - 1; i >= 0; i--) {
360
361                         //Cache variables and intersection, continue if no intersection
362                         item = this.items[i];
363                         itemElement = item.item[0];
364                         intersection = this._intersectsWithPointer(item);
365                         if (!intersection) {
366                                 continue;
367                         }
368
369                         // Only put the placeholder inside the current Container, skip all
370                         // items form other containers. This works because when moving
371                         // an item from one container to another the
372                         // currentContainer is switched before the placeholder is moved.
373                         //
374                         // Without this moving items in "sub-sortables" can cause the placeholder to jitter
375                         // beetween the outer and inner container.
376                         if (item.instance !== this.currentContainer) {
377                                 continue;
378                         }
379
380                         // cannot intersect with itself
381                         // no useless actions that have been done before
382                         // no action if the item moved is the parent of the item checked
383                         if (itemElement !== this.currentItem[0] &&
384                                 this.placeholder[intersection === 1 ? "next" : "prev"]()[0] !== itemElement &&
385                                 !$.contains(this.placeholder[0], itemElement) &&
386                                 (this.options.type === "semi-dynamic" ? !$.contains(this.element[0], itemElement) : true)
387                         ) {
388
389                                 this.direction = intersection === 1 ? "down" : "up";
390
391                                 if (this.options.tolerance === "pointer" || this._intersectsWithSides(item)) {
392                                         this._rearrange(event, item);
393                                 } else {
394                                         break;
395                                 }
396
397                                 this._trigger("change", event, this._uiHash());
398                                 break;
399                         }
400                 }
401
402                 //Post events to containers
403                 this._contactContainers(event);
404
405                 //Interconnect with droppables
406                 if($.ui.ddmanager) {
407                         $.ui.ddmanager.drag(this, event);
408                 }
409
410                 //Call callbacks
411                 this._trigger("sort", event, this._uiHash());
412
413                 this.lastPositionAbs = this.positionAbs;
414                 return false;
415
416         },
417
418         _mouseStop: function(event, noPropagation) {
419
420                 if(!event) {
421                         return;
422                 }
423
424                 //If we are using droppables, inform the manager about the drop
425                 if ($.ui.ddmanager && !this.options.dropBehaviour) {
426                         $.ui.ddmanager.drop(this, event);
427                 }
428
429                 if(this.options.revert) {
430                         var that = this,
431                                 cur = this.placeholder.offset(),
432                                 axis = this.options.axis,
433                                 animation = {};
434
435                         if ( !axis || axis === "x" ) {
436                                 animation.left = cur.left - this.offset.parent.left - this.margins.left + (this.offsetParent[0] === document.body ? 0 : this.offsetParent[0].scrollLeft);
437                         }
438                         if ( !axis || axis === "y" ) {
439                                 animation.top = cur.top - this.offset.parent.top - this.margins.top + (this.offsetParent[0] === document.body ? 0 : this.offsetParent[0].scrollTop);
440                         }
441                         this.reverting = true;
442                         $(this.helper).animate( animation, parseInt(this.options.revert, 10) || 500, function() {
443                                 that._clear(event);
444                         });
445                 } else {
446                         this._clear(event, noPropagation);
447                 }
448
449                 return false;
450
451         },
452
453         cancel: function() {
454
455                 if(this.dragging) {
456
457                         this._mouseUp({ target: null });
458
459                         if(this.options.helper === "original") {
460                                 this.currentItem.css(this._storedCSS).removeClass("ui-sortable-helper");
461                         } else {
462                                 this.currentItem.show();
463                         }
464
465                         //Post deactivating events to containers
466                         for (var i = this.containers.length - 1; i >= 0; i--){
467                                 this.containers[i]._trigger("deactivate", null, this._uiHash(this));
468                                 if(this.containers[i].containerCache.over) {
469                                         this.containers[i]._trigger("out", null, this._uiHash(this));
470                                         this.containers[i].containerCache.over = 0;
471                                 }
472                         }
473
474                 }
475
476                 if (this.placeholder) {
477                         //$(this.placeholder[0]).remove(); would have been the jQuery way - unfortunately, it unbinds ALL events from the original node!
478                         if(this.placeholder[0].parentNode) {
479                                 this.placeholder[0].parentNode.removeChild(this.placeholder[0]);
480                         }
481                         if(this.options.helper !== "original" && this.helper && this.helper[0].parentNode) {
482                                 this.helper.remove();
483                         }
484
485                         $.extend(this, {
486                                 helper: null,
487                                 dragging: false,
488                                 reverting: false,
489                                 _noFinalSort: null
490                         });
491
492                         if(this.domPosition.prev) {
493                                 $(this.domPosition.prev).after(this.currentItem);
494                         } else {
495                                 $(this.domPosition.parent).prepend(this.currentItem);
496                         }
497                 }
498
499                 return this;
500
501         },
502
503         serialize: function(o) {
504
505                 var items = this._getItemsAsjQuery(o && o.connected),
506                         str = [];
507                 o = o || {};
508
509                 $(items).each(function() {
510                         var res = ($(o.item || this).attr(o.attribute || "id") || "").match(o.expression || (/(.+)[\-=_](.+)/));
511                         if (res) {
512                                 str.push((o.key || res[1]+"[]")+"="+(o.key && o.expression ? res[1] : res[2]));
513                         }
514                 });
515
516                 if(!str.length && o.key) {
517                         str.push(o.key + "=");
518                 }
519
520                 return str.join("&");
521
522         },
523
524         toArray: function(o) {
525
526                 var items = this._getItemsAsjQuery(o && o.connected),
527                         ret = [];
528
529                 o = o || {};
530
531                 items.each(function() { ret.push($(o.item || this).attr(o.attribute || "id") || ""); });
532                 return ret;
533
534         },
535
536         /* Be careful with the following core functions */
537         _intersectsWith: function(item) {
538
539                 var x1 = this.positionAbs.left,
540                         x2 = x1 + this.helperProportions.width,
541                         y1 = this.positionAbs.top,
542                         y2 = y1 + this.helperProportions.height,
543                         l = item.left,
544                         r = l + item.width,
545                         t = item.top,
546                         b = t + item.height,
547                         dyClick = this.offset.click.top,
548                         dxClick = this.offset.click.left,
549                         isOverElement = (y1 + dyClick) > t && (y1 + dyClick) < b && (x1 + dxClick) > l && (x1 + dxClick) < r;
550
551                 if ( this.options.tolerance === "pointer" ||
552                         this.options.forcePointerForContainers ||
553                         (this.options.tolerance !== "pointer" && this.helperProportions[this.floating ? "width" : "height"] > item[this.floating ? "width" : "height"])
554                 ) {
555                         return isOverElement;
556                 } else {
557
558                         return (l < x1 + (this.helperProportions.width / 2) && // Right Half
559                                 x2 - (this.helperProportions.width / 2) < r && // Left Half
560                                 t < y1 + (this.helperProportions.height / 2) && // Bottom Half
561                                 y2 - (this.helperProportions.height / 2) < b ); // Top Half
562
563                 }
564         },
565
566         _intersectsWithPointer: function(item) {
567
568                 var isOverElementHeight = (this.options.axis === "x") || isOverAxis(this.positionAbs.top + this.offset.click.top, item.top, item.height),
569                         isOverElementWidth = (this.options.axis === "y") || isOverAxis(this.positionAbs.left + this.offset.click.left, item.left, item.width),
570                         isOverElement = isOverElementHeight && isOverElementWidth,
571                         verticalDirection = this._getDragVerticalDirection(),
572                         horizontalDirection = this._getDragHorizontalDirection();
573
574                 if (!isOverElement) {
575                         return false;
576                 }
577
578                 return this.floating ?
579                         ( ((horizontalDirection && horizontalDirection === "right") || verticalDirection === "down") ? 2 : 1 )
580                         : ( verticalDirection && (verticalDirection === "down" ? 2 : 1) );
581
582         },
583
584         _intersectsWithSides: function(item) {
585
586                 var isOverBottomHalf = isOverAxis(this.positionAbs.top + this.offset.click.top, item.top + (item.height/2), item.height),
587                         isOverRightHalf = isOverAxis(this.positionAbs.left + this.offset.click.left, item.left + (item.width/2), item.width),
588                         verticalDirection = this._getDragVerticalDirection(),
589                         horizontalDirection = this._getDragHorizontalDirection();
590
591                 if (this.floating && horizontalDirection) {
592                         return ((horizontalDirection === "right" && isOverRightHalf) || (horizontalDirection === "left" && !isOverRightHalf));
593                 } else {
594                         return verticalDirection && ((verticalDirection === "down" && isOverBottomHalf) || (verticalDirection === "up" && !isOverBottomHalf));
595                 }
596
597         },
598
599         _getDragVerticalDirection: function() {
600                 var delta = this.positionAbs.top - this.lastPositionAbs.top;
601                 return delta !== 0 && (delta > 0 ? "down" : "up");
602         },
603
604         _getDragHorizontalDirection: function() {
605                 var delta = this.positionAbs.left - this.lastPositionAbs.left;
606                 return delta !== 0 && (delta > 0 ? "right" : "left");
607         },
608
609         refresh: function(event) {
610                 this._refreshItems(event);
611                 this.refreshPositions();
612                 return this;
613         },
614
615         _connectWith: function() {
616                 var options = this.options;
617                 return options.connectWith.constructor === String ? [options.connectWith] : options.connectWith;
618         },
619
620         _getItemsAsjQuery: function(connected) {
621
622                 var i, j, cur, inst,
623                         items = [],
624                         queries = [],
625                         connectWith = this._connectWith();
626
627                 if(connectWith && connected) {
628                         for (i = connectWith.length - 1; i >= 0; i--){
629                                 cur = $(connectWith[i]);
630                                 for ( j = cur.length - 1; j >= 0; j--){
631                                         inst = $.data(cur[j], this.widgetFullName);
632                                         if(inst && inst !== this && !inst.options.disabled) {
633                                                 queries.push([$.isFunction(inst.options.items) ? inst.options.items.call(inst.element) : $(inst.options.items, inst.element).not(".ui-sortable-helper").not(".ui-sortable-placeholder"), inst]);
634                                         }
635                                 }
636                         }
637                 }
638
639                 queries.push([$.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]);
640
641                 for (i = queries.length - 1; i >= 0; i--){
642                         queries[i][0].each(function() {
643                                 items.push(this);
644                         });
645                 }
646
647                 return $(items);
648
649         },
650
651         _removeCurrentsFromItems: function() {
652
653                 var list = this.currentItem.find(":data(" + this.widgetName + "-item)");
654
655                 this.items = $.grep(this.items, function (item) {
656                         for (var j=0; j < list.length; j++) {
657                                 if(list[j] === item.item[0]) {
658                                         return false;
659                                 }
660                         }
661                         return true;
662                 });
663
664         },
665
666         _refreshItems: function(event) {
667
668                 this.items = [];
669                 this.containers = [this];
670
671                 var i, j, cur, inst, targetData, _queries, item, queriesLength,
672                         items = this.items,
673                         queries = [[$.isFunction(this.options.items) ? this.options.items.call(this.element[0], event, { item: this.currentItem }) : $(this.options.items, this.element), this]],
674                         connectWith = this._connectWith();
675
676                 if(connectWith && this.ready) { //Shouldn't be run the first time through due to massive slow-down
677                         for (i = connectWith.length - 1; i >= 0; i--){
678                                 cur = $(connectWith[i]);
679                                 for (j = cur.length - 1; j >= 0; j--){
680                                         inst = $.data(cur[j], this.widgetFullName);
681                                         if(inst && inst !== this && !inst.options.disabled) {
682                                                 queries.push([$.isFunction(inst.options.items) ? inst.options.items.call(inst.element[0], event, { item: this.currentItem }) : $(inst.options.items, inst.element), inst]);
683                                                 this.containers.push(inst);
684                                         }
685                                 }
686                         }
687                 }
688
689                 for (i = queries.length - 1; i >= 0; i--) {
690                         targetData = queries[i][1];
691                         _queries = queries[i][0];
692
693                         for (j=0, queriesLength = _queries.length; j < queriesLength; j++) {
694                                 item = $(_queries[j]);
695
696                                 item.data(this.widgetName + "-item", targetData); // Data for target checking (mouse manager)
697
698                                 items.push({
699                                         item: item,
700                                         instance: targetData,
701                                         width: 0, height: 0,
702                                         left: 0, top: 0
703                                 });
704                         }
705                 }
706
707         },
708
709         refreshPositions: function(fast) {
710
711                 //This has to be redone because due to the item being moved out/into the offsetParent, the offsetParent's position will change
712                 if(this.offsetParent && this.helper) {
713                         this.offset.parent = this._getParentOffset();
714                 }
715
716                 var i, item, t, p;
717
718                 for (i = this.items.length - 1; i >= 0; i--){
719                         item = this.items[i];
720
721                         //We ignore calculating positions of all connected containers when we're not over them
722                         if(item.instance !== this.currentContainer && this.currentContainer && item.item[0] !== this.currentItem[0]) {
723                                 continue;
724                         }
725
726                         t = this.options.toleranceElement ? $(this.options.toleranceElement, item.item) : item.item;
727
728                         if (!fast) {
729                                 item.width = t.outerWidth();
730                                 item.height = t.outerHeight();
731                         }
732
733                         p = t.offset();
734                         item.left = p.left;
735                         item.top = p.top;
736                 }
737
738                 if(this.options.custom && this.options.custom.refreshContainers) {
739                         this.options.custom.refreshContainers.call(this);
740                 } else {
741                         for (i = this.containers.length - 1; i >= 0; i--){
742                                 p = this.containers[i].element.offset();
743                                 this.containers[i].containerCache.left = p.left;
744                                 this.containers[i].containerCache.top = p.top;
745                                 this.containers[i].containerCache.width = this.containers[i].element.outerWidth();
746                                 this.containers[i].containerCache.height = this.containers[i].element.outerHeight();
747                         }
748                 }
749
750                 return this;
751         },
752
753         _createPlaceholder: function(that) {
754                 that = that || this;
755                 var className,
756                         o = that.options;
757
758                 if(!o.placeholder || o.placeholder.constructor === String) {
759                         className = o.placeholder;
760                         o.placeholder = {
761                                 element: function() {
762
763                                         var nodeName = that.currentItem[0].nodeName.toLowerCase(),
764                                                 element = $( that.document[0].createElement( nodeName ) )
765                                                         .addClass(className || that.currentItem[0].className+" ui-sortable-placeholder")
766                                                         .removeClass("ui-sortable-helper");
767
768                                         if ( nodeName === "tr" ) {
769                                                 // Use a high colspan to force the td to expand the full
770                                                 // width of the table (browsers are smart enough to
771                                                 // handle this properly)
772                                                 element.append( "<td colspan='99'>&#160;</td>" );
773                                         } else if ( nodeName === "img" ) {
774                                                 element.attr( "src", that.currentItem.attr( "src" ) );
775                                         }
776
777                                         if ( !className ) {
778                                                 element.css( "visibility", "hidden" );
779                                         }
780
781                                         return element;
782                                 },
783                                 update: function(container, p) {
784
785                                         // 1. If a className is set as 'placeholder option, we don't force sizes - the class is responsible for that
786                                         // 2. The option 'forcePlaceholderSize can be enabled to force it even if a class name is specified
787                                         if(className && !o.forcePlaceholderSize) {
788                                                 return;
789                                         }
790
791                                         //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
792                                         if(!p.height()) { p.height(that.currentItem.innerHeight() - parseInt(that.currentItem.css("paddingTop")||0, 10) - parseInt(that.currentItem.css("paddingBottom")||0, 10)); }
793                                         if(!p.width()) { p.width(that.currentItem.innerWidth() - parseInt(that.currentItem.css("paddingLeft")||0, 10) - parseInt(that.currentItem.css("paddingRight")||0, 10)); }
794                                 }
795                         };
796                 }
797
798                 //Create the placeholder
799                 that.placeholder = $(o.placeholder.element.call(that.element, that.currentItem));
800
801                 //Append it after the actual current item
802                 that.currentItem.after(that.placeholder);
803
804                 //Update the size of the placeholder (TODO: Logic to fuzzy, see line 316/317)
805                 o.placeholder.update(that, that.placeholder);
806
807         },
808
809         _contactContainers: function(event) {
810                 var i, j, dist, itemWithLeastDistance, posProperty, sizeProperty, base, cur, nearBottom, floating,
811                         innermostContainer = null,
812                         innermostIndex = null;
813
814                 // get innermost container that intersects with item
815                 for (i = this.containers.length - 1; i >= 0; i--) {
816
817                         // never consider a container that's located within the item itself
818                         if($.contains(this.currentItem[0], this.containers[i].element[0])) {
819                                 continue;
820                         }
821
822                         if(this._intersectsWith(this.containers[i].containerCache)) {
823
824                                 // if we've already found a container and it's more "inner" than this, then continue
825                                 if(innermostContainer && $.contains(this.containers[i].element[0], innermostContainer.element[0])) {
826                                         continue;
827                                 }
828
829                                 innermostContainer = this.containers[i];
830                                 innermostIndex = i;
831
832                         } else {
833                                 // container doesn't intersect. trigger "out" event if necessary
834                                 if(this.containers[i].containerCache.over) {
835                                         this.containers[i]._trigger("out", event, this._uiHash(this));
836                                         this.containers[i].containerCache.over = 0;
837                                 }
838                         }
839
840                 }
841
842                 // if no intersecting containers found, return
843                 if(!innermostContainer) {
844                         return;
845                 }
846
847                 // move the item into the container if it's not there already
848                 if(this.containers.length === 1) {
849                         if (!this.containers[innermostIndex].containerCache.over) {
850                                 this.containers[innermostIndex]._trigger("over", event, this._uiHash(this));
851                                 this.containers[innermostIndex].containerCache.over = 1;
852                         }
853                 } else {
854
855                         //When entering a new container, we will find the item with the least distance and append our item near it
856                         dist = 10000;
857                         itemWithLeastDistance = null;
858                         floating = innermostContainer.floating || isFloating(this.currentItem);
859                         posProperty = floating ? "left" : "top";
860                         sizeProperty = floating ? "width" : "height";
861                         base = this.positionAbs[posProperty] + this.offset.click[posProperty];
862                         for (j = this.items.length - 1; j >= 0; j--) {
863                                 if(!$.contains(this.containers[innermostIndex].element[0], this.items[j].item[0])) {
864                                         continue;
865                                 }
866                                 if(this.items[j].item[0] === this.currentItem[0]) {
867                                         continue;
868                                 }
869                                 if (floating && !isOverAxis(this.positionAbs.top + this.offset.click.top, this.items[j].top, this.items[j].height)) {
870                                         continue;
871                                 }
872                                 cur = this.items[j].item.offset()[posProperty];
873                                 nearBottom = false;
874                                 if(Math.abs(cur - base) > Math.abs(cur + this.items[j][sizeProperty] - base)){
875                                         nearBottom = true;
876                                         cur += this.items[j][sizeProperty];
877                                 }
878
879                                 if(Math.abs(cur - base) < dist) {
880                                         dist = Math.abs(cur - base); itemWithLeastDistance = this.items[j];
881                                         this.direction = nearBottom ? "up": "down";
882                                 }
883                         }
884
885                         //Check if dropOnEmpty is enabled
886                         if(!itemWithLeastDistance && !this.options.dropOnEmpty) {
887                                 return;
888                         }
889
890                         if(this.currentContainer === this.containers[innermostIndex]) {
891                                 return;
892                         }
893
894                         itemWithLeastDistance ? this._rearrange(event, itemWithLeastDistance, null, true) : this._rearrange(event, null, this.containers[innermostIndex].element, true);
895                         this._trigger("change", event, this._uiHash());
896                         this.containers[innermostIndex]._trigger("change", event, this._uiHash(this));
897                         this.currentContainer = this.containers[innermostIndex];
898
899                         //Update the placeholder
900                         this.options.placeholder.update(this.currentContainer, this.placeholder);
901
902                         this.containers[innermostIndex]._trigger("over", event, this._uiHash(this));
903                         this.containers[innermostIndex].containerCache.over = 1;
904                 }
905
906
907         },
908
909         _createHelper: function(event) {
910
911                 var o = this.options,
912                         helper = $.isFunction(o.helper) ? $(o.helper.apply(this.element[0], [event, this.currentItem])) : (o.helper === "clone" ? this.currentItem.clone() : this.currentItem);
913
914                 //Add the helper to the DOM if that didn't happen already
915                 if(!helper.parents("body").length) {
916                         $(o.appendTo !== "parent" ? o.appendTo : this.currentItem[0].parentNode)[0].appendChild(helper[0]);
917                 }
918
919                 if(helper[0] === this.currentItem[0]) {
920                         this._storedCSS = { width: this.currentItem[0].style.width, height: this.currentItem[0].style.height, position: this.currentItem.css("position"), top: this.currentItem.css("top"), left: this.currentItem.css("left") };
921                 }
922
923                 if(!helper[0].style.width || o.forceHelperSize) {
924                         helper.width(this.currentItem.width());
925                 }
926                 if(!helper[0].style.height || o.forceHelperSize) {
927                         helper.height(this.currentItem.height());
928                 }
929
930                 return helper;
931
932         },
933
934         _adjustOffsetFromHelper: function(obj) {
935                 if (typeof obj === "string") {
936                         obj = obj.split(" ");
937                 }
938                 if ($.isArray(obj)) {
939                         obj = {left: +obj[0], top: +obj[1] || 0};
940                 }
941                 if ("left" in obj) {
942                         this.offset.click.left = obj.left + this.margins.left;
943                 }
944                 if ("right" in obj) {
945                         this.offset.click.left = this.helperProportions.width - obj.right + this.margins.left;
946                 }
947                 if ("top" in obj) {
948                         this.offset.click.top = obj.top + this.margins.top;
949                 }
950                 if ("bottom" in obj) {
951                         this.offset.click.top = this.helperProportions.height - obj.bottom + this.margins.top;
952                 }
953         },
954
955         _getParentOffset: function() {
956
957
958                 //Get the offsetParent and cache its position
959                 this.offsetParent = this.helper.offsetParent();
960                 var po = this.offsetParent.offset();
961
962                 // This is a special case where we need to modify a offset calculated on start, since the following happened:
963                 // 1. The position of the helper is absolute, so it's position is calculated based on the next positioned parent
964                 // 2. The actual offset parent is a child of the scroll parent, and the scroll parent isn't the document, which means that
965                 //    the scroll is included in the initial calculation of the offset of the parent, and never recalculated upon drag
966                 if(this.cssPosition === "absolute" && this.scrollParent[0] !== document && $.contains(this.scrollParent[0], this.offsetParent[0])) {
967                         po.left += this.scrollParent.scrollLeft();
968                         po.top += this.scrollParent.scrollTop();
969                 }
970
971                 // This needs to be actually done for all browsers, since pageX/pageY includes this information
972                 // with an ugly IE fix
973                 if( this.offsetParent[0] === document.body || (this.offsetParent[0].tagName && this.offsetParent[0].tagName.toLowerCase() === "html" && $.ui.ie)) {
974                         po = { top: 0, left: 0 };
975                 }
976
977                 return {
978                         top: po.top + (parseInt(this.offsetParent.css("borderTopWidth"),10) || 0),
979                         left: po.left + (parseInt(this.offsetParent.css("borderLeftWidth"),10) || 0)
980                 };
981
982         },
983
984         _getRelativeOffset: function() {
985
986                 if(this.cssPosition === "relative") {
987                         var p = this.currentItem.position();
988                         return {
989                                 top: p.top - (parseInt(this.helper.css("top"),10) || 0) + this.scrollParent.scrollTop(),
990                                 left: p.left - (parseInt(this.helper.css("left"),10) || 0) + this.scrollParent.scrollLeft()
991                         };
992                 } else {
993                         return { top: 0, left: 0 };
994                 }
995
996         },
997
998         _cacheMargins: function() {
999                 this.margins = {
1000                         left: (parseInt(this.currentItem.css("marginLeft"),10) || 0),
1001                         top: (parseInt(this.currentItem.css("marginTop"),10) || 0)
1002                 };
1003         },
1004
1005         _cacheHelperProportions: function() {
1006                 this.helperProportions = {
1007                         width: this.helper.outerWidth(),
1008                         height: this.helper.outerHeight()
1009                 };
1010         },
1011
1012         _setContainment: function() {
1013
1014                 var ce, co, over,
1015                         o = this.options;
1016                 if(o.containment === "parent") {
1017                         o.containment = this.helper[0].parentNode;
1018                 }
1019                 if(o.containment === "document" || o.containment === "window") {
1020                         this.containment = [
1021                                 0 - this.offset.relative.left - this.offset.parent.left,
1022                                 0 - this.offset.relative.top - this.offset.parent.top,
1023                                 $(o.containment === "document" ? document : window).width() - this.helperProportions.width - this.margins.left,
1024                                 ($(o.containment === "document" ? document : window).height() || document.body.parentNode.scrollHeight) - this.helperProportions.height - this.margins.top
1025                         ];
1026                 }
1027
1028                 if(!(/^(document|window|parent)$/).test(o.containment)) {
1029                         ce = $(o.containment)[0];
1030                         co = $(o.containment).offset();
1031                         over = ($(ce).css("overflow") !== "hidden");
1032
1033                         this.containment = [
1034                                 co.left + (parseInt($(ce).css("borderLeftWidth"),10) || 0) + (parseInt($(ce).css("paddingLeft"),10) || 0) - this.margins.left,
1035                                 co.top + (parseInt($(ce).css("borderTopWidth"),10) || 0) + (parseInt($(ce).css("paddingTop"),10) || 0) - this.margins.top,
1036                                 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,
1037                                 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
1038                         ];
1039                 }
1040
1041         },
1042
1043         _convertPositionTo: function(d, pos) {
1044
1045                 if(!pos) {
1046                         pos = this.position;
1047                 }
1048                 var mod = d === "absolute" ? 1 : -1,
1049                         scroll = this.cssPosition === "absolute" && !(this.scrollParent[0] !== document && $.contains(this.scrollParent[0], this.offsetParent[0])) ? this.offsetParent : this.scrollParent,
1050                         scrollIsRootNode = (/(html|body)/i).test(scroll[0].tagName);
1051
1052                 return {
1053                         top: (
1054                                 pos.top +                                                                                                                               // The absolute mouse position
1055                                 this.offset.relative.top * mod +                                                                                // Only for relative positioned nodes: Relative offset from element to offset parent
1056                                 this.offset.parent.top * mod -                                                                                  // The offsetParent's offset without borders (offset + border)
1057                                 ( ( this.cssPosition === "fixed" ? -this.scrollParent.scrollTop() : ( scrollIsRootNode ? 0 : scroll.scrollTop() ) ) * mod)
1058                         ),
1059                         left: (
1060                                 pos.left +                                                                                                                              // The absolute mouse position
1061                                 this.offset.relative.left * mod +                                                                               // Only for relative positioned nodes: Relative offset from element to offset parent
1062                                 this.offset.parent.left * mod   -                                                                               // The offsetParent's offset without borders (offset + border)
1063                                 ( ( this.cssPosition === "fixed" ? -this.scrollParent.scrollLeft() : scrollIsRootNode ? 0 : scroll.scrollLeft() ) * mod)
1064                         )
1065                 };
1066
1067         },
1068
1069         _generatePosition: function(event) {
1070
1071                 var top, left,
1072                         o = this.options,
1073                         pageX = event.pageX,
1074                         pageY = event.pageY,
1075                         scroll = this.cssPosition === "absolute" && !(this.scrollParent[0] !== document && $.contains(this.scrollParent[0], this.offsetParent[0])) ? this.offsetParent : this.scrollParent, scrollIsRootNode = (/(html|body)/i).test(scroll[0].tagName);
1076
1077                 // This is another very weird special case that only happens for relative elements:
1078                 // 1. If the css position is relative
1079                 // 2. and the scroll parent is the document or similar to the offset parent
1080                 // we have to refresh the relative offset during the scroll so there are no jumps
1081                 if(this.cssPosition === "relative" && !(this.scrollParent[0] !== document && this.scrollParent[0] !== this.offsetParent[0])) {
1082                         this.offset.relative = this._getRelativeOffset();
1083                 }
1084
1085                 /*
1086                  * - Position constraining -
1087                  * Constrain the position to a mix of grid, containment.
1088                  */
1089
1090                 if(this.originalPosition) { //If we are not dragging yet, we won't check for options
1091
1092                         if(this.containment) {
1093                                 if(event.pageX - this.offset.click.left < this.containment[0]) {
1094                                         pageX = this.containment[0] + this.offset.click.left;
1095                                 }
1096                                 if(event.pageY - this.offset.click.top < this.containment[1]) {
1097                                         pageY = this.containment[1] + this.offset.click.top;
1098                                 }
1099                                 if(event.pageX - this.offset.click.left > this.containment[2]) {
1100                                         pageX = this.containment[2] + this.offset.click.left;
1101                                 }
1102                                 if(event.pageY - this.offset.click.top > this.containment[3]) {
1103                                         pageY = this.containment[3] + this.offset.click.top;
1104                                 }
1105                         }
1106
1107                         if(o.grid) {
1108                                 top = this.originalPageY + Math.round((pageY - this.originalPageY) / o.grid[1]) * o.grid[1];
1109                                 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;
1110
1111                                 left = this.originalPageX + Math.round((pageX - this.originalPageX) / o.grid[0]) * o.grid[0];
1112                                 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;
1113                         }
1114
1115                 }
1116
1117                 return {
1118                         top: (
1119                                 pageY -                                                                                                                         // The absolute mouse position
1120                                 this.offset.click.top -                                                                                                 // Click offset (relative to the element)
1121                                 this.offset.relative.top        -                                                                                       // Only for relative positioned nodes: Relative offset from element to offset parent
1122                                 this.offset.parent.top +                                                                                                // The offsetParent's offset without borders (offset + border)
1123                                 ( ( this.cssPosition === "fixed" ? -this.scrollParent.scrollTop() : ( scrollIsRootNode ? 0 : scroll.scrollTop() ) ))
1124                         ),
1125                         left: (
1126                                 pageX -                                                                                                                         // The absolute mouse position
1127                                 this.offset.click.left -                                                                                                // Click offset (relative to the element)
1128                                 this.offset.relative.left       -                                                                                       // Only for relative positioned nodes: Relative offset from element to offset parent
1129                                 this.offset.parent.left +                                                                                               // The offsetParent's offset without borders (offset + border)
1130                                 ( ( this.cssPosition === "fixed" ? -this.scrollParent.scrollLeft() : scrollIsRootNode ? 0 : scroll.scrollLeft() ))
1131                         )
1132                 };
1133
1134         },
1135
1136         _rearrange: function(event, i, a, hardRefresh) {
1137
1138                 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));
1139
1140                 //Various things done here to improve the performance:
1141                 // 1. we create a setTimeout, that calls refreshPositions
1142                 // 2. on the instance, we have a counter variable, that get's higher after every append
1143                 // 3. on the local scope, we copy the counter variable, and check in the timeout, if it's still the same
1144                 // 4. this lets only the last addition to the timeout stack through
1145                 this.counter = this.counter ? ++this.counter : 1;
1146                 var counter = this.counter;
1147
1148                 this._delay(function() {
1149                         if(counter === this.counter) {
1150                                 this.refreshPositions(!hardRefresh); //Precompute after each DOM insertion, NOT on mousemove
1151                         }
1152                 });
1153
1154         },
1155
1156         _clear: function(event, noPropagation) {
1157
1158                 this.reverting = false;
1159                 // We delay all events that have to be triggered to after the point where the placeholder has been removed and
1160                 // everything else normalized again
1161                 var i,
1162                         delayedTriggers = [];
1163
1164                 // We first have to update the dom position of the actual currentItem
1165                 // Note: don't do it if the current item is already removed (by a user), or it gets reappended (see #4088)
1166                 if(!this._noFinalSort && this.currentItem.parent().length) {
1167                         this.placeholder.before(this.currentItem);
1168                 }
1169                 this._noFinalSort = null;
1170
1171                 if(this.helper[0] === this.currentItem[0]) {
1172                         for(i in this._storedCSS) {
1173                                 if(this._storedCSS[i] === "auto" || this._storedCSS[i] === "static") {
1174                                         this._storedCSS[i] = "";
1175                                 }
1176                         }
1177                         this.currentItem.css(this._storedCSS).removeClass("ui-sortable-helper");
1178                 } else {
1179                         this.currentItem.show();
1180                 }
1181
1182                 if(this.fromOutside && !noPropagation) {
1183                         delayedTriggers.push(function(event) { this._trigger("receive", event, this._uiHash(this.fromOutside)); });
1184                 }
1185                 if((this.fromOutside || this.domPosition.prev !== this.currentItem.prev().not(".ui-sortable-helper")[0] || this.domPosition.parent !== this.currentItem.parent()[0]) && !noPropagation) {
1186                         delayedTriggers.push(function(event) { this._trigger("update", event, this._uiHash()); }); //Trigger update callback if the DOM position has changed
1187                 }
1188
1189                 // Check if the items Container has Changed and trigger appropriate
1190                 // events.
1191                 if (this !== this.currentContainer) {
1192                         if(!noPropagation) {
1193                                 delayedTriggers.push(function(event) { this._trigger("remove", event, this._uiHash()); });
1194                                 delayedTriggers.push((function(c) { return function(event) { c._trigger("receive", event, this._uiHash(this)); };  }).call(this, this.currentContainer));
1195                                 delayedTriggers.push((function(c) { return function(event) { c._trigger("update", event, this._uiHash(this));  }; }).call(this, this.currentContainer));
1196                         }
1197                 }
1198
1199
1200                 //Post events to containers
1201                 for (i = this.containers.length - 1; i >= 0; i--){
1202                         if(!noPropagation) {
1203                                 delayedTriggers.push((function(c) { return function(event) { c._trigger("deactivate", event, this._uiHash(this)); };  }).call(this, this.containers[i]));
1204                         }
1205                         if(this.containers[i].containerCache.over) {
1206                                 delayedTriggers.push((function(c) { return function(event) { c._trigger("out", event, this._uiHash(this)); };  }).call(this, this.containers[i]));
1207                                 this.containers[i].containerCache.over = 0;
1208                         }
1209                 }
1210
1211                 //Do what was originally in plugins
1212                 if ( this.storedCursor ) {
1213                         this.document.find( "body" ).css( "cursor", this.storedCursor );
1214                         this.storedStylesheet.remove();
1215                 }
1216                 if(this._storedOpacity) {
1217                         this.helper.css("opacity", this._storedOpacity);
1218                 }
1219                 if(this._storedZIndex) {
1220                         this.helper.css("zIndex", this._storedZIndex === "auto" ? "" : this._storedZIndex);
1221                 }
1222
1223                 this.dragging = false;
1224                 if(this.cancelHelperRemoval) {
1225                         if(!noPropagation) {
1226                                 this._trigger("beforeStop", event, this._uiHash());
1227                                 for (i=0; i < delayedTriggers.length; i++) {
1228                                         delayedTriggers[i].call(this, event);
1229                                 } //Trigger all delayed events
1230                                 this._trigger("stop", event, this._uiHash());
1231                         }
1232
1233                         this.fromOutside = false;
1234                         return false;
1235                 }
1236
1237                 if(!noPropagation) {
1238                         this._trigger("beforeStop", event, this._uiHash());
1239                 }
1240
1241                 //$(this.placeholder[0]).remove(); would have been the jQuery way - unfortunately, it unbinds ALL events from the original node!
1242                 this.placeholder[0].parentNode.removeChild(this.placeholder[0]);
1243
1244                 if(this.helper[0] !== this.currentItem[0]) {
1245                         this.helper.remove();
1246                 }
1247                 this.helper = null;
1248
1249                 if(!noPropagation) {
1250                         for (i=0; i < delayedTriggers.length; i++) {
1251                                 delayedTriggers[i].call(this, event);
1252                         } //Trigger all delayed events
1253                         this._trigger("stop", event, this._uiHash());
1254                 }
1255
1256                 this.fromOutside = false;
1257                 return true;
1258
1259         },
1260
1261         _trigger: function() {
1262                 if ($.Widget.prototype._trigger.apply(this, arguments) === false) {
1263                         this.cancel();
1264                 }
1265         },
1266
1267         _uiHash: function(_inst) {
1268                 var inst = _inst || this;
1269                 return {
1270                         helper: inst.helper,
1271                         placeholder: inst.placeholder || $([]),
1272                         position: inst.position,
1273                         originalPosition: inst.originalPosition,
1274                         offset: inst.positionAbs,
1275                         item: inst.currentItem,
1276                         sender: _inst ? _inst.element : null
1277                 };
1278         }
1279
1280 });
1281
1282 })(jQuery);