text: 'use strict';
  
  const $ = require('jquery');
  /*!
   * jQuery UI Sortable @VERSION
   * http://jqueryui.com
   *
   * Copyright 2012 jQuery Foundation and other contributors
   * Released under the MIT license.
   * http://jquery.org/license
   *
   * http://api.jqueryui.com/sortable/
   *
   * Depends:
   *	jquery.ui.core.js
   *	jquery.ui.mouse.js
   *	jquery.ui.widget.js
   */
  if ($.ui === undefined) {
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i,s=t.within,a=s.isWindow?s.scrollTop:s.offset.top,n=t.within.height,o=e.top-t.collisionPosition.marginTop,h=a-o,l=o+t.collisionHeight-n-a;t.collisionHeight>n?h>0&&0>=l?(i=e.top+h+t.collisionHeight-n-a,e.top+=h-i):e.top=l>0&&0>=h?a:h>l?a+n-t.collisionHeight:a:h>0?e.top+=h:l>0?e.top-=l:e.top=r(e.top-o,e.top)}},flip:{left:function(e,t){var i,s,a=t.within,n=a.offset.left+a.scrollLeft,r=a.width,h=a.isWindow?a.scrollLeft:a.offset.left,l=e.left-t.collisionPosition.marginLeft,u=l-h,c=l+t.collisionWidth-r-h,d="left"===t.my[0]?-t.elemWidth:"right"===t.my[0]?t.elemWidth:0,p="left"===t.at[0]?t.targetWidth:"right"===t.at[0]?-t.targetWidth:0,f=-2*t.offset[0];0>u?(i=e.left+d+p+f+t.collisionWidth-r-n,(0>i||o(u)>i)&&(e.left+=d+p+f)):c>0&&(s=e.left-t.collisionPosition.marginLeft+d+p+f-h,(s>0||c>o(s))&&(e.left+=d+p+f))},top:function(e,t){var i,s,a=t.within,n=a.offset.top+a.scrollTop,r=a.height,h=a.isWindow?a.scrollTop:a.offset.top,l=e.top-t.collisionPosition.marginTop,u=l-h,c=l+t.collisionHeight-r-h,d="top"===t.my[1],p=d?-t.elemHeight:"bottom"===t.my[1]?t.elemHeight:0,f="top"===t.at[1]?t.targetHeight:"bottom"===t.at[1]?-t.targetHeight:0,m=-2*t.offset[1];0>u?(s=e.top+p+f+m+t.collisionHeight-r-n,e.top+p+f+m>u&&(0>s||o(u)>s)&&(e.top+=p+f+m)):c>0&&(i=e.top-t.collisionPosition.marginTop+p+f+m-h,e.top+p+f+m>c&&(i>0||c>o(i))&&(e.top+=p+f+m))}},flipfit:{left:function(){e.ui.position.flip.left.apply(this,arguments),e.ui.position.fit.left.apply(this,arguments)},top:function(){e.ui.position.flip.top.apply(this,arguments),e.ui.position.fit.top.apply(this,arguments)}}},function(){var t,i,s,a,n,r=document.getElementsByTagName("body")[0],o=document.createElement("div");t=document.createElement(r?"div":"body"),s={visibility:"hidden",width:0,height:0,border:0,margin:0,background:"none"},r&&e.extend(s,{position:"absolute",left:"-1000px",top:"-1000px"});for(n in s)t.style[n]=s[n];t.appendChild(o),i=r||document.documentElement,i.insertBefore(t,i.firstChild),o.style.cssText="position: absolute; left: 10.7432222px;",a=e(o).offset().left,e.support.offsetFractions=a>10&&11>a,t.innerHTML="",i.removeChild(t)}()})(jQuery);
  }
  
  $.widget("ui.djnsortable", $.ui.mouse, {
  	version: "@VERSION",
  	widgetEventPrefix: "sort",
  	ready: false,
  	options: {
  		appendTo: "parent",
  		axis: false,
  		connectWith: false,
  		containment: false,
  		cursor: 'auto',
  		cursorAt: false,
  		dropOnEmpty: true,
  		forcePlaceholderSize: false,
  		forceHelperSize: false,
  		grid: false,
  		handle: false,
  		helper: "original",
  		items: '> *',
  		opacity: false,
  		placeholder: false,
  		revert: false,
  		scroll: true,
  		scrollSensitivity: 20,
  		scrollSpeed: 20,
  		scope: "default",
  		tolerance: "intersect",
  		zIndex: 1000
  	},
  
  	_isOverAxis: function( x, reference, size ) {
  		return ( x >= reference ) && ( x < ( reference + size ) );
  	},
  
  	_create: function() {
  
  		var o = this.options;
  		this.containerCache = {};
  		this.element.addClass("ui-sortable");
  
  		//Get the items
  		this.refresh();
  
  		//Let's determine if the items are being displayed horizontally
  		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;
  
  		//Let's determine the parent's offset
  		this.offset = this.element.offset();
  
  		//Initialize mouse events for interaction
  		this._mouseInit();
  
  		//We're ready to go
  		this.ready = true
  
  	},
  
  	_destroy: function() {
  		this.element
  			.removeClass("ui-sortable ui-sortable-disabled");
  		this._mouseDestroy();
  
  		for ( var i = this.items.length - 1; i >= 0; i-- )
  			this.items[i].item.removeData(this.widgetName + "-item");
  
  		return this;
  	},
  
  	_setOption: function(key, value){
  		if ( key === "disabled" ) {
  			this.options[ key ] = value;
  
  			this.widget().toggleClass( "ui-sortable-disabled", !!value );
  		} else {
  			// Don't call widget base _setOption for disable as it adds ui-state-disabled class
  			$.Widget.prototype._setOption.apply(this, arguments);
  		}
  	},
  
  	_mouseCapture: function(event, overrideHandle) {
  		var that = this;
  
  		if (this.reverting) {
  			return false;
  		}
  
  		if(this.options.disabled || this.options.type == 'static') return false;
  
  		//We have to refresh the items data once first
  		this._refreshItems(event);
  
  		//Find out if the clicked node (or one of its parents) is a actual item in this.items
  		var currentItem = null, nodes = $(event.target).parents().each(function() {
  			if($.data(this, that.widgetName + '-item') == that) {
  				currentItem = $(this);
  				return false;
  			}
  		});
  		if($.data(event.target, that.widgetName + '-item') == that) currentItem = $(event.target);
  
  		if(!currentItem) return false;
  		if(this.options.handle && !overrideHandle) {
  			var validHandle = false;
  			var addBackMethod = ($.fn.addBack) ? 'addBack' : 'andSelf';
  
  			$(this.options.handle, currentItem).find("*")[addBackMethod]().each(function() { if(this == event.target) validHandle = true; });
  			if(!validHandle) return false;
  		}
  
  		this.currentItem = currentItem;
  		this._removeCurrentsFromItems();
  		return true;
  
  	},
  
  	_mouseStart: function(event, overrideHandle, noActivation) {
  
  		var o = this.options;
  		this.currentContainer = this;
  
  		//We only need to call refreshPositions, because the refreshItems call has been moved to mouseCapture
  		this.refreshPositions();
  
  		//Create and append the visible helper
  		this.helper = this._createHelper(event);
  
  		//Cache the helper size
  		this._cacheHelperProportions();
  
  		/*
  		 * - Position generation -
  		 * This block generates everything position related - it's the core of draggables.
  		 */
  
  		//Cache the margins of the original element
  		this._cacheMargins();
  
  		//Get the next scrolling parent
  		this.scrollParent = this.helper.scrollParent();
  
  		//The element's absolute position on the page minus margins
  		this.offset = this.currentItem.offset();
  		this.offset = {
  			top: this.offset.top - this.margins.top,
  			left: this.offset.left - this.margins.left
  		};
  
  		$.extend(this.offset, {
  			click: { //Where the click happened, relative to the element
  				left: event.pageX - this.offset.left,
  				top: event.pageY - this.offset.top
  			},
  			parent: this._getParentOffset(),
  			relative: this._getRelativeOffset() //This is a relative to absolute position minus the actual position calculation - only used for relative positioned helper
  		});
  
  		// Only after we got the offset, we can change the helper's position to absolute
  		// TODO: Still need to figure out a way to make relative sorting possible
  		this.helper.css("position", "absolute");
  		this.cssPosition = this.helper.css("position");
  
  		//Generate the original position
  		this.originalPosition = this._generatePosition(event);
  		this.originalPageX = event.pageX;
  		this.originalPageY = event.pageY;
  
  		//Adjust the mouse offset relative to the helper if 'cursorAt' is supplied
  		(o.cursorAt && this._adjustOffsetFromHelper(o.cursorAt));
  
  		//Cache the former DOM position
  		this.domPosition = { prev: this.currentItem.prev()[0], parent: this.currentItem.parent()[0] };
  
  		//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
  		if(this.helper[0] != this.currentItem[0]) {
  			this.currentItem.hide();
  		}
  
  		//Create the placeholder
  		this._createPlaceholder();
  
  		//Set a containment if given in the options
  		if(o.containment)
  			this._setContainment();
  
  		if(o.cursor) { // cursor option
  			if ($('body').css("cursor")) this._storedCursor = $('body').css("cursor");
  			$('body').css("cursor", o.cursor);
  		}
  
  		if(o.opacity) { // opacity option
  			if (this.helper.css("opacity")) this._storedOpacity = this.helper.css("opacity");
  			this.helper.css("opacity", o.opacity);
  		}
  
  		if(o.zIndex) { // zIndex option
  			if (this.helper.css("zIndex")) this._storedZIndex = this.helper.css("zIndex");
  			this.helper.css("zIndex", o.zIndex);
  		}
  
  		//Prepare scrolling
  		if(this.scrollParent[0] != document && this.scrollParent[0].tagName != 'HTML')
  			this.overflowOffset = this.scrollParent.offset();
  
  		//Call callbacks
  		this._trigger("start", event, this._uiHash());
  
  		//Recache the helper size
  		if(!this._preserveHelperProportions)
  			this._cacheHelperProportions();
  
  
  		//Post 'activate' events to possible containers
  		if(!noActivation) {
  			 for (var i = this.containers.length - 1; i >= 0; i--) { this.containers[i]._trigger("activate", event, this._uiHash(this)); }
  		}
  
  		//Prepare possible droppables
  		if($.ui.ddmanager)
  			$.ui.ddmanager.current = this;
  
  		if ($.ui.ddmanager && !o.dropBehaviour)
  			$.ui.ddmanager.prepareOffsets(this, event);
  
  		this.dragging = true;
  
  		this.helper.addClass("ui-sortable-helper");
  		this._mouseDrag(event); //Execute the drag once - this causes the helper not to be visible before getting its correct position
  		return true;
  
  	},
  
  	_mouseDrag: function(event) {
  
  		//Compute the helpers position
  		this.position = this._generatePosition(event);
  		this.positionAbs = this._convertPositionTo("absolute");
  
  		if (!this.lastPositionAbs) {
  			this.lastPositionAbs = this.positionAbs;
  		}
  
  		//Do scrolling
  		if(this.options.scroll) {
  			var o = this.options, scrolled = false;
  			if(this.scrollParent[0] != document && this.scrollParent[0].tagName != 'HTML') {
  
  				if((this.overflowOffset.top + this.scrollParent[0].offsetHeight) - event.pageY < o.scrollSensitivity)
  					this.scrollParent[0].scrollTop = scrolled = this.scrollParent[0].scrollTop + o.scrollSpeed;
  				else if(event.pageY - this.overflowOffset.top < o.scrollSensitivity)
  					this.scrollParent[0].scrollTop = scrolled = this.scrollParent[0].scrollTop - o.scrollSpeed;
  
  				if((this.overflowOffset.left + this.scrollParent[0].offsetWidth) - event.pageX < o.scrollSensitivity)
  					this.scrollParent[0].scrollLeft = scrolled = this.scrollParent[0].scrollLeft + o.scrollSpeed;
  				else if(event.pageX - this.overflowOffset.left < o.scrollSensitivity)
  					this.scrollParent[0].scrollLeft = scrolled = this.scrollParent[0].scrollLeft - o.scrollSpeed;
  
  			} else {
  
  				if(event.pageY - $(document).scrollTop() < o.scrollSensitivity)
  					scrolled = $(document).scrollTop($(document).scrollTop() - o.scrollSpeed);
  				else if($(window).height() - (event.pageY - $(document).scrollTop()) < o.scrollSensitivity)
  					scrolled = $(document).scrollTop($(document).scrollTop() + o.scrollSpeed);
  
  				if(event.pageX - $(document).scrollLeft() < o.scrollSensitivity)
  					scrolled = $(document).scrollLeft($(document).scrollLeft() - o.scrollSpeed);
  				else if($(window).width() - (event.pageX - $(document).scrollLeft()) < o.scrollSensitivity)
  					scrolled = $(document).scrollLeft($(document).scrollLeft() + o.scrollSpeed);
  
  			}
  
  			if(scrolled !== false && $.ui.ddmanager && !o.dropBehaviour)
  				$.ui.ddmanager.prepareOffsets(this, event);
  		}
  
  		//Regenerate the absolute position used for position checks
  		this.positionAbs = this._convertPositionTo("absolute");
  
  		//Set the helper position
  		if(!this.options.axis || this.options.axis != "y") this.helper[0].style.left = this.position.left+'px';
  		if(!this.options.axis || this.options.axis != "x") this.helper[0].style.top = this.position.top+'px';
  
  		//Rearrange
  		for (var i = this.items.length - 1; i >= 0; i--) {
  
  			//Cache variables and intersection, continue if no intersection
  			var item = this.items[i], itemElement = item.item[0], intersection = this._intersectsWithPointer(item);
  			if (!intersection) continue;
  
  			// Only put the placeholder inside the current Container, skip all
  			// items form other containers. This works because when moving
  			// an item from one container to another the
  			// currentContainer is switched before the placeholder is moved.
  			//
  			// Without this moving items in "sub-sortables" can cause the placeholder to jitter
  			// beetween the outer and inner container.
  			if (item.instance !== this.currentContainer) continue;
  
  			if (itemElement != this.currentItem[0] //cannot intersect with itself
  				&&	this.placeholder[intersection == 1 ? "next" : "prev"]()[0] != itemElement //no useless actions that have been done before
  				&&	!$.contains(this.placeholder[0], itemElement) //no action if the item moved is the parent of the item checked
  				&& (this.options.type == 'semi-dynamic' ? !$.contains(this.element[0], itemElement) : true)
  				//&& itemElement.parentNode == this.placeholder[0].parentNode // only rearrange items within the same container
  			) {
  
  				this.direction = intersection == 1 ? "down" : "up";
  
  				if (this.options.tolerance == "pointer" || this._intersectsWithSides(item)) {
  					this._rearrange(event, item);
  				} else {
  					break;
  				}
  
  				this._trigger("change", event, this._uiHash());
  				break;
  			}
  		}
  
  		//Post events to containers
  		this._contactContainers(event);
  
  		//Interconnect with droppables
  		if($.ui.ddmanager) $.ui.ddmanager.drag(this, event);
  
  		//Call callbacks
  		this._trigger('sort', event, this._uiHash());
  
  		this.lastPositionAbs = this.positionAbs;
  		return false;
  
  	},
  
  	_mouseStop: function(event, noPropagation) {
  
  		if(!event) return;
  
  		//If we are using droppables, inform the manager about the drop
  		if ($.ui.ddmanager && !this.options.dropBehaviour)
  			$.ui.ddmanager.drop(this, event);
  
  		if(this.options.revert) {
  			var that = this;
  			var cur = this.placeholder.offset();
  
  			this.reverting = true;
  
  			$(this.helper).animate({
  				left: cur.left - this.offset.parent.left - this.margins.left + (this.offsetParent[0] == document.body ? 0 : this.offsetParent[0].scrollLeft),
  				top: cur.top - this.offset.parent.top - this.margins.top + (this.offsetParent[0] == document.body ? 0 : this.offsetParent[0].scrollTop)
  			}, parseInt(this.options.revert, 10) || 500, function() {
  				that._clear(event);
  			});
  		} else {
  			this._clear(event, noPropagation);
  		}
  
  		return false;
  
  	},
  
  	cancel: function() {
  
  		if(this.dragging) {
  
  			this._mouseUp({ target: null });
  
  			if(this.options.helper == "original")
  				this.currentItem.css(this._storedCSS).removeClass("ui-sortable-helper");
  			else
  				this.currentItem.show();
  
  			//Post deactivating events to containers
  			for (var i = this.containers.length - 1; i >= 0; i--){
  				this.containers[i]._trigger("deactivate", null, this._uiHash(this));
  				if(this.containers[i].containerCache.over) {
  					this.containers[i]._trigger("out", null, this._uiHash(this));
  					this.containers[i].containerCache.over = 0;
  				}
  			}
  
  		}
  
  		if (this.placeholder) {
  			//$(this.placeholder[0]).remove(); would have been the jQuery way - unfortunately, it unbinds ALL events from the original node!
  			if(this.placeholder[0].parentNode) this.placeholder[0].parentNode.removeChild(this.placeholder[0]);
  			if(this.options.helper != "original" && this.helper && this.helper[0].parentNode) this.helper.remove();
  
  			$.extend(this, {
  				helper: null,
  				dragging: false,
  				reverting: false,
  				_noFinalSort: null
  			});
  
  			if(this.domPosition.prev) {
  				$(this.domPosition.prev).after(this.currentItem);
  			} else {
  				$(this.domPosition.parent).prepend(this.currentItem);
  			}
  		}
  
  		return this;
  
  	},
  
  	serialize: function(o) {
  
  		var items = this._getItemsAsjQuery(o && o.connected);
  		var str = []; o = o || {};
  
  		$(items).each(function() {
  			var res = ($(o.item || this).attr(o.attribute || 'id') || '').match(o.expression || (/(.+)[-=_](.+)/));
  			if(res) str.push((o.key || res[1]+'[]')+'='+(o.key && o.expression ? res[1] : res[2]));
  		});
  
  		if(!str.length && o.key) {
  			str.push(o.key + '=');
  		}
  
  		return str.join('&');
  
  	},
  
  	toArray: function(o) {
  
  		var items = this._getItemsAsjQuery(o && o.connected);
  		var ret = []; o = o || {};
  
  		items.each(function() { ret.push($(o.item || this).attr(o.attribute || 'id') || ''); });
  		return ret;
  
  	},
  
  	/* Be careful with the following core functions */
  	_intersectsWith: function(item) {
  
  		var x1 = this.positionAbs.left,
  			x2 = x1 + this.helperProportions.width,
  			y1 = this.positionAbs.top,
  			y2 = y1 + this.helperProportions.height;
  
  		var l = item.left,
  			r = l + item.width,
  			t = item.top,
  			b = t + Math.max(10, item.height);
  
  		var dyClick = this.offset.click.top,
  			dxClick = this.offset.click.left;
  
  		var isOverElement = (y1 + dyClick) > t && (y1 + dyClick) < b && (x1 + dxClick) > l && (x1 + dxClick) < r;
  
  		if(	   this.options.tolerance == "pointer"
  			|| this.options.forcePointerForContainers
  			|| (this.options.tolerance != "pointer" && this.helperProportions[this.floating ? 'width' : 'height'] > item[this.floating ? 'width' : 'height'])
  		) {
  			return isOverElement;
  		} else {
  
  			return (l < x1 + (this.helperProportions.width / 2) // Right Half
  				&& x2 - (this.helperProportions.width / 2) < r // Left Half
  				&& t < y1 + (this.helperProportions.height / 2) // Bottom Half
  				&& y2 - (this.helperProportions.height / 2) < b ); // Top Half
  
  		}
  	},
  
  	_intersectsWithPointer: function(item) {
  
  		var isOverElementHeight = (this.options.axis === 'x') || this._isOverAxis(this.positionAbs.top + this.offset.click.top, item.top, Math.max(10, item.height)),
  			isOverElementWidth = (this.options.axis === 'y') || this._isOverAxis(this.positionAbs.left + this.offset.click.left, item.left, item.width),
  			isOverElement = isOverElementHeight && isOverElementWidth,
  			verticalDirection = this._getDragVerticalDirection(),
  			horizontalDirection = this._getDragHorizontalDirection();
  
  		if (!isOverElement)
  			return false;
  
  		return this.floating ?
  			( ((horizontalDirection && horizontalDirection == "right") || verticalDirection == "down") ? 2 : 1 )
  			: ( verticalDirection && (verticalDirection == "down" ? 2 : 1) );
  
  	},
  
  	_intersectsWithSides: function(item) {
  
  		var isOverBottomHalf = this._isOverAxis(this.positionAbs.top + this.offset.click.top, item.top + (Math.max(10, item.height)/2), Math.max(10, item.height)),
  			isOverRightHalf = this._isOverAxis(this.positionAbs.left + this.offset.click.left, item.left + (item.width/2), item.width),
  			verticalDirection = this._getDragVerticalDirection(),
  			horizontalDirection = this._getDragHorizontalDirection();
  
  		if (this.floating && horizontalDirection) {
  			return ((horizontalDirection == "right" && isOverRightHalf) || (horizontalDirection == "left" && !isOverRightHalf));
  		} else {
  			return verticalDirection && ((verticalDirection == "down" && isOverBottomHalf) || (verticalDirection == "up" && !isOverBottomHalf));
  		}
  
  	},
  
  	_getDragVerticalDirection: function() {
  		var delta = this.positionAbs.top - this.lastPositionAbs.top;
  		return delta != 0 && (delta > 0 ? "down" : "up");
  	},
  
  	_getDragHorizontalDirection: function() {
  		var delta = this.positionAbs.left - this.lastPositionAbs.left;
  		return delta != 0 && (delta > 0 ? "right" : "left");
  	},
  
  	refresh: function(event) {
  		this._refreshItems(event);
  		this.refreshPositions();
  		return this;
  	},
  
  	_connectWith: function() {
  		var options = this.options;
  		return options.connectWith.constructor == String
  			? [options.connectWith]
  			: options.connectWith;
  	},
  
  	_getItemsAsjQuery: function(connected) {
  
  		var items = [];
  		var queries = [];
  		var connectWith = this._connectWith();
  
  		if(connectWith && connected) {
  			for (var i = connectWith.length - 1; i >= 0; i--){
  				var cur = $(connectWith[i]);
  				for (var j = cur.length - 1; j >= 0; j--){
  					var inst = $.data(cur[j], this.widgetName);
  					if(inst && inst != this && !inst.options.disabled) {
  						queries.push([$.isFunction(inst.options.items) ? inst.options.items.call(inst.element) : $(inst.options.items, inst.element).not(".ui-sortable-helper").not('.ui-sortable-placeholder'), inst]);
  					}
  				};
  			};
  		}
  
  		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]);
  
  		for (var i = queries.length - 1; i >= 0; i--){
  			queries[i][0].each(function() {
  				items.push(this);
  			});
  		};
  
  		return $(items);
  
  	},
  
  	_removeCurrentsFromItems: function() {
  
  		var list = this.currentItem.find(":data(" + this.widgetName + "-item)");
  
  		this.items = $.grep(this.items, function (item) {
  			for (var j=0; j < list.length; j++) {
  				if(list[j] == item.item[0])
  					return false;
  			};
  			return true;
  		});
  
  	},
  
  	_refreshItems: function(event) {
  
  		this.items = [];
  		this.containers = [this];
  		var items = this.items;
  		var queries = [[$.isFunction(this.options.items) ? this.options.items.call(this.element[0], event, { item: this.currentItem }) : $(this.options.items, this.element), this]];
  		var connectWith = this._connectWith();
  
  		if(connectWith && this.ready) { //Shouldn't be run the first time through due to massive slow-down
  			for (var i = connectWith.length - 1; i >= 0; i--){
  				var cur = $(connectWith[i]);
  				for (var j = cur.length - 1; j >= 0; j--){
  					var inst = $.data(cur[j], this.widgetName);
  					if(inst && inst != this && !inst.options.disabled) {
  						queries.push([$.isFunction(inst.options.items) ? inst.options.items.call(inst.element[0], event, { item: this.currentItem }) : $(inst.options.items, inst.element), inst]);
  						this.containers.push(inst);
  					}
  				};
  			};
  		}
  
  		for (var i = queries.length - 1; i >= 0; i--) {
  			var targetData = queries[i][1];
  			var _queries = queries[i][0];
  
  			for (var j=0, queriesLength = _queries.length; j < queriesLength; j++) {
  				var item = $(_queries[j]);
  
  				item.data(this.widgetName + '-item', targetData); // Data for target checking (mouse manager)
  
  				items.push({
  					item: item,
  					instance: targetData,
  					width: 0, height: 0,
  					left: 0, top: 0
  				});
  			};
  		};
  
  	},
  
  	refreshPositions: function(fast) {
  
  		//This has to be redone because due to the item being moved out/into the offsetParent, the offsetParent's position will change
  		if(this.offsetParent && this.helper) {
  			this.offset.parent = this._getParentOffset();
  		}
  
  		for (var i = this.items.length - 1; i >= 0; i--){
  			var item = this.items[i];
  
  			//We ignore calculating positions of all connected containers when we're not over them
  			if(item.instance != this.currentContainer && this.currentContainer && item.item[0] != this.currentItem[0])
  				continue;
  
  			var t = this.options.toleranceElement ? $(this.options.toleranceElement, item.item) : item.item;
  
  			if (!fast) {
  				item.width = t.outerWidth();
  				item.height = t.outerHeight();
  			}
  
  			var p = t.offset();
  			item.left = p.left;
  			item.top = p.top;
  		};
  
  		if(this.options.custom && this.options.custom.refreshContainers) {
  			this.options.custom.refreshContainers.call(this);
  		} else {
  			for (var i = this.containers.length - 1; i >= 0; i--){
  				var p = this.containers[i].element.offset();
  				this.containers[i].containerCache.left = p.left;
  				this.containers[i].containerCache.top = p.top;
  				this.containers[i].containerCache.width	= this.containers[i].element.outerWidth();
  				this.containers[i].containerCache.height = this.containers[i].element.outerHeight();
  			};
  		}
  
  		return this;
  	},
  
  	_createPlaceholder: function(that) {
  		that = that || this;
  		var o = that.options;
  
  		if(!o.placeholder || o.placeholder.constructor == String) {
  			var className = o.placeholder;
  			o.placeholder = {
  				element: function() {
  
  					var el = $(document.createElement(that.currentItem[0].nodeName))
  						.addClass(className || that.currentItem[0].className+" ui-sortable-placeholder")
  						.removeClass("ui-sortable-helper")[0];
  
  					if(!className)
  						el.style.visibility = "hidden";
  
  					return el;
  				},
  				update: function(container, p) {
  
  					// 1. If a className is set as 'placeholder option, we don't force sizes - the class is responsible for that
  					// 2. The option 'forcePlaceholderSize can be enabled to force it even if a class name is specified
  					if(className && !o.forcePlaceholderSize) return;
  
  					//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
  					if(!p.height()) { p.height(that.currentItem.innerHeight() - parseInt(that.currentItem.css('paddingTop')||0, 10) - parseInt(that.currentItem.css('paddingBottom')||0, 10)); };
  					if(!p.width()) { p.width(that.currentItem.innerWidth() - parseInt(that.currentItem.css('paddingLeft')||0, 10) - parseInt(that.currentItem.css('paddingRight')||0, 10)); };
  				}
  			};
  		}
  
  		//Create the placeholder
  		that.placeholder = $(o.placeholder.element.call(that.element, that.currentItem));
  
  		//Append it after the actual current item
  		that.currentItem.after(that.placeholder);
  
  		//Update the size of the placeholder (TODO: Logic to fuzzy, see line 316/317)
  		o.placeholder.update(that, that.placeholder);
  
  	},
  
  	_contactContainers: function(event) {
  
  		// get innermost container that intersects with item
  		var innermostContainer = null, innermostIndex = null;
  
  
  		for (var i = this.containers.length - 1; i >= 0; i--){
  
  			// never consider a container that's located within the item itself
  			if($.contains(this.currentItem[0], this.containers[i].element[0]))
  				continue;
  
  			if(this._intersectsWith(this.containers[i].containerCache)) {
  
  				// if we've already found a container and it's more "inner" than this, then continue
  				if(innermostContainer && $.contains(this.containers[i].element[0], innermostContainer.element[0]))
  					continue;
  
  				innermostContainer = this.containers[i];
  				innermostIndex = i;
  
  			} else {
  				// container doesn't intersect. trigger "out" event if necessary
  				if(this.containers[i].containerCache.over) {
  					this.containers[i]._trigger("out", event, this._uiHash(this));
  					this.containers[i].containerCache.over = 0;
  				}
  			}
  
  		}
  
  		// if no intersecting containers found, return
  		if(!innermostContainer) return;
  
  		// move the item into the container if it's not there already
  		if(this.containers.length === 1) {
  			this.containers[innermostIndex]._trigger("over", event, this._uiHash(this));
  			this.containers[innermostIndex].containerCache.over = 1;
  		} else {
  
  			//When entering a new container, we will find the item with the least distance and append our item near it
  			var dist = 10000; var itemWithLeastDistance = null;
  			var posProperty = this.containers[innermostIndex].floating ? 'left' : 'top';
  			var sizeProperty = this.containers[innermostIndex].floating ? 'width' : 'height';
  			var base = this.positionAbs[posProperty] + this.offset.click[posProperty];
  			for (var j = this.items.length - 1; j >= 0; j--) {
  				if(!$.contains(this.containers[innermostIndex].element[0], this.items[j].item[0])) continue;
  				if(this.items[j].item[0] == this.currentItem[0]) continue;
  				var cur = this.items[j].item.offset()[posProperty];
  				var nearBottom = false;
  				if(Math.abs(cur - base) > Math.abs(cur + Math.max(10, this.items[j][sizeProperty]) - base)){
  					nearBottom = true;
  					cur += this.items[j][sizeProperty];
  				}
  
  				if(Math.abs(cur - base) < dist) {
  					dist = Math.abs(cur - base); itemWithLeastDistance = this.items[j];
  					this.direction = nearBottom ? "up": "down";
  				}
  			}
  
  			if(!itemWithLeastDistance && !this.options.dropOnEmpty) //Check if dropOnEmpty is enabled
  				return;
  
  			this.currentContainer = this.containers[innermostIndex];
  			itemWithLeastDistance ? this._rearrange(event, itemWithLeastDistance, null, true) : this._rearrange(event, null, this.containers[innermostIndex].element, true);
  			this._trigger("change", event, this._uiHash());
  			this.containers[innermostIndex]._trigger("change", event, this._uiHash(this));
  
  			//Update the placeholder
  			this.options.placeholder.update(this.currentContainer, this.placeholder);
  
  			this.containers[innermostIndex]._trigger("over", event, this._uiHash(this));
  			this.containers[innermostIndex].containerCache.over = 1;
  		}
  
  
  	},
  
  	_createHelper: function(event) {
  
  		var o = this.options;
  		var helper = $.isFunction(o.helper) ? $(o.helper.apply(this.element[0], [event, this.currentItem])) : (o.helper == 'clone' ? this.currentItem.clone() : this.currentItem);
  
  		if(!helper.parents('body').length) //Add the helper to the DOM if that didn't happen already
  			$(o.appendTo != 'parent' ? o.appendTo : this.currentItem[0].parentNode)[0].appendChild(helper[0]);
  
  		if(helper[0] == this.currentItem[0])
  			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") };
  
  		if(helper[0].style.width == '' || o.forceHelperSize) helper.width(this.currentItem.width());
  		if(helper[0].style.height == '' || o.forceHelperSize) helper.height(this.currentItem.height());
  
  		return helper;
  
  	},
  
  	_adjustOffsetFromHelper: function(obj) {
  		if (typeof obj == 'string') {
  			obj = obj.split(' ');
  		}
  		if ($.isArray(obj)) {
  			obj = {left: +obj[0], top: +obj[1] || 0};
  		}
  		if ('left' in obj) {
  			this.offset.click.left = obj.left + this.margins.left;
  		}
  		if ('right' in obj) {
  			this.offset.click.left = this.helperProportions.width - obj.right + this.margins.left;
  		}
  		if ('top' in obj) {
  			this.offset.click.top = obj.top + this.margins.top;
  		}
  		if ('bottom' in obj) {
  			this.offset.click.top = this.helperProportions.height - obj.bottom + this.margins.top;
  		}
  	},
  
  	_getParentOffset: function() {
  
  
  		//Get the offsetParent and cache its position
  		this.offsetParent = this.helper.offsetParent();
  		var po = this.offsetParent.offset();
  
  		// This is a special case where we need to modify a offset calculated on start, since the following happened:
  		// 1. The position of the helper is absolute, so it's position is calculated based on the next positioned parent
  		// 2. The actual offset parent is a child of the scroll parent, and the scroll parent isn't the document, which means that
  		//    the scroll is included in the initial calculation of the offset of the parent, and never recalculated upon drag
  		if(this.cssPosition == 'absolute' && this.scrollParent[0] != document && $.contains(this.scrollParent[0], this.offsetParent[0])) {
  			po.left += this.scrollParent.scrollLeft();
  			po.top += this.scrollParent.scrollTop();
  		}
  
  		if((this.offsetParent[0] == document.body) //This needs to be actually done for all browsers, since pageX/pageY includes this information
  		|| (this.offsetParent[0].tagName && this.offsetParent[0].tagName.toLowerCase() == 'html' && $.ui.ie)) //Ugly IE fix
  			po = { top: 0, left: 0 };
  
  		return {
  			top: po.top + (parseInt(this.offsetParent.css("borderTopWidth"),10) || 0),
  			left: po.left + (parseInt(this.offsetParent.css("borderLeftWidth"),10) || 0)
  		};
  
  	},
  
  	_getRelativeOffset: function() {
  
  		if(this.cssPosition == "relative") {
  			var p = this.currentItem.position();
  			return {
  				top: p.top - (parseInt(this.helper.css("top"),10) || 0) + this.scrollParent.scrollTop(),
  				left: p.left - (parseInt(this.helper.css("left"),10) || 0) + this.scrollParent.scrollLeft()
  			};
  		} else {
  			return { top: 0, left: 0 };
  		}
  
  	},
  
  	_cacheMargins: function() {
  		this.margins = {
  			left: (parseInt(this.currentItem.css("marginLeft"),10) || 0),
  			top: (parseInt(this.currentItem.css("marginTop"),10) || 0)
  		};
  	},
  
  	_cacheHelperProportions: function() {
  		this.helperProportions = {
  			width: this.helper.outerWidth(),
  			height: this.helper.outerHeight()
  		};
  	},
  
  	_setContainment: function() {
  
  		var o = this.options;
  		if(o.containment == 'parent') o.containment = this.helper[0].parentNode;
  		if(o.containment == 'document' || o.containment == 'window') this.containment = [
  			0 - this.offset.relative.left - this.offset.parent.left,
  			0 - this.offset.relative.top - this.offset.parent.top,
  			$(o.containment == 'document' ? document : window).width() - this.helperProportions.width - this.margins.left,
  			($(o.containment == 'document' ? document : window).height() || document.body.parentNode.scrollHeight) - this.helperProportions.height - this.margins.top
  		];
  
  		if(!(/^(document|window|parent)$/).test(o.containment)) {
  			var ce = $(o.containment)[0];
  			var co = $(o.containment).offset();
  			var over = ($(ce).css("overflow") != 'hidden');
  
  			this.containment = [
  				co.left + (parseInt($(ce).css("borderLeftWidth"),10) || 0) + (parseInt($(ce).css("paddingLeft"),10) || 0) - this.margins.left,
  				co.top + (parseInt($(ce).css("borderTopWidth"),10) || 0) + (parseInt($(ce).css("paddingTop"),10) || 0) - this.margins.top,
  				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,
  				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
  			];
  		}
  
  	},
  
  	_convertPositionTo: function(d, pos) {
  
  		if(!pos) pos = this.position;
  		var mod = d == "absolute" ? 1 : -1;
  		var o = this.options, 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);
  
  		return {
  			top: (
  				pos.top																	// The absolute mouse position
  				+ this.offset.relative.top * mod										// Only for relative positioned nodes: Relative offset from element to offset parent
  				+ this.offset.parent.top * mod											// The offsetParent's offset without borders (offset + border)
  				- ( ( this.cssPosition == 'fixed' ? -this.scrollParent.scrollTop() : ( scrollIsRootNode ? 0 : scroll.scrollTop() ) ) * mod)
  			),
  			left: (
  				pos.left																// The absolute mouse position
  				+ this.offset.relative.left * mod										// Only for relative positioned nodes: Relative offset from element to offset parent
  				+ this.offset.parent.left * mod											// The offsetParent's offset without borders (offset + border)
  				- ( ( this.cssPosition == 'fixed' ? -this.scrollParent.scrollLeft() : scrollIsRootNode ? 0 : scroll.scrollLeft() ) * mod)
  			)
  		};
  
  	},
  
  	_generatePosition: function(event) {
  
  		var o = this.options, 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);
  
  		// This is another very weird special case that only happens for relative elements:
  		// 1. If the css position is relative
  		// 2. and the scroll parent is the document or similar to the offset parent
  		// we have to refresh the relative offset during the scroll so there are no jumps
  		if(this.cssPosition == 'relative' && !(this.scrollParent[0] != document && this.scrollParent[0] != this.offsetParent[0])) {
  			this.offset.relative = this._getRelativeOffset();
  		}
  
  		var pageX = event.pageX;
  		var pageY = event.pageY;
  
  		/*
  		 * - Position constraining -
  		 * Constrain the position to a mix of grid, containment.
  		 */
  
  		if(this.originalPosition) { //If we are not dragging yet, we won't check for options
  
  			if(this.containment) {
  				if(event.pageX - this.offset.click.left < this.containment[0]) pageX = this.containment[0] + this.offset.click.left;
  				if(event.pageY - this.offset.click.top < this.containment[1]) pageY = this.containment[1] + this.offset.click.top;
  				if(event.pageX - this.offset.click.left > this.containment[2]) pageX = this.containment[2] + this.offset.click.left;
  				if(event.pageY - this.offset.click.top > this.containment[3]) pageY = this.containment[3] + this.offset.click.top;
  			}
  
  			if(o.grid) {
  				var top = this.originalPageY + Math.round((pageY - this.originalPageY) / o.grid[1]) * o.grid[1];
  				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;
  
  				var left = this.originalPageX + Math.round((pageX - this.originalPageX) / o.grid[0]) * o.grid[0];
  				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;
  			}
  
  		}
  
  		return {
  			top: (
  				pageY																// The absolute mouse position
  				- this.offset.click.top													// Click offset (relative to the element)
  				- this.offset.relative.top												// Only for relative positioned nodes: Relative offset from element to offset parent
  				- this.offset.parent.top												// The offsetParent's offset without borders (offset + border)
  				+ ( ( this.cssPosition == 'fixed' ? -this.scrollParent.scrollTop() : ( scrollIsRootNode ? 0 : scroll.scrollTop() ) ))
  			),
  			left: (
  				pageX																// The absolute mouse position
  				- this.offset.click.left												// Click offset (relative to the element)
  				- this.offset.relative.left												// Only for relative positioned nodes: Relative offset from element to offset parent
  				- this.offset.parent.left												// The offsetParent's offset without borders (offset + border)
  				+ ( ( this.cssPosition == 'fixed' ? -this.scrollParent.scrollLeft() : scrollIsRootNode ? 0 : scroll.scrollLeft() ))
  			)
  		};
  
  	},
  
  	_rearrange: function(event, i, a, hardRefresh) {
  
  		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));
  
  		//Various things done here to improve the performance:
  		// 1. we create a setTimeout, that calls refreshPositions
  		// 2. on the instance, we have a counter variable, that get's higher after every append
  		// 3. on the local scope, we copy the counter variable, and check in the timeout, if it's still the same
  		// 4. this lets only the last addition to the timeout stack through
  		this.counter = this.counter ? ++this.counter : 1;
  		var counter = this.counter;
  
  		this._delay(function() {
  			if(counter == this.counter) this.refreshPositions(!hardRefresh); //Precompute after each DOM insertion, NOT on mousemove
  		});
  
  	},
  
  	_clear: function(event, noPropagation) {
  
  		this.reverting = false;
  		// We delay all events that have to be triggered to after the point where the placeholder has been removed and
  		// everything else normalized again
  		var delayedTriggers = [];
  
  		// We first have to update the dom position of the actual currentItem
  		// Note: don't do it if the current item is already removed (by a user), or it gets reappended (see #4088)
  		if(!this._noFinalSort && this.currentItem.parent().length) this.placeholder.before(this.currentItem);
  		this._noFinalSort = null;
  
  		if(this.helper[0] == this.currentItem[0]) {
  			for(var i in this._storedCSS) {
  				if(this._storedCSS[i] == 'auto' || this._storedCSS[i] == 'static') this._storedCSS[i] = '';
  			}
  			this.currentItem.css(this._storedCSS).removeClass("ui-sortable-helper");
  		} else {
  			this.currentItem.show();
  		}
  
  		if(this.fromOutside && !noPropagation) delayedTriggers.push(function(event) { this._trigger("receive", event, this._uiHash(this.fromOutside)); });
  		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
  
  		// Check if the items Container has Changed and trigger appropriate
  		// events.
  		if (this !== this.currentContainer) {
  			if(!noPropagation) {
  				delayedTriggers.push(function(event) { this._trigger("remove", event, this._uiHash()); });
  				delayedTriggers.push((function(c) { return function(event) { c._trigger("receive", event, this._uiHash(this)); };  }).call(this, this.currentContainer));
  				delayedTriggers.push((function(c) { return function(event) { c._trigger("update", event, this._uiHash(this));  }; }).call(this, this.currentContainer));
  			}
  		}
  
  
  		//Post events to containers
  		for (var i = this.containers.length - 1; i >= 0; i--){
  			if(!noPropagation) delayedTriggers.push((function(c) { return function(event) { c._trigger("deactivate", event, this._uiHash(this)); };  }).call(this, this.containers[i]));
  			if(this.containers[i].containerCache.over) {
  				delayedTriggers.push((function(c) { return function(event) { c._trigger("out", event, this._uiHash(this)); };  }).call(this, this.containers[i]));
  				this.containers[i].containerCache.over = 0;
  			}
  		}
  
  		//Do what was originally in plugins
  		if(this._storedCursor) $('body').css("cursor", this._storedCursor); //Reset cursor
  		if(this._storedOpacity) this.helper.css("opacity", this._storedOpacity); //Reset opacity
  		if(this._storedZIndex) this.helper.css("zIndex", this._storedZIndex == 'auto' ? '' : this._storedZIndex); //Reset z-index
  
  		this.dragging = false;
  		if(this.cancelHelperRemoval) {
  			if(!noPropagation) {
  				this._trigger("beforeStop", event, this._uiHash());
  				for (var i=0; i < delayedTriggers.length; i++) { delayedTriggers[i].call(this, event); }; //Trigger all delayed events
  				this._trigger("stop", event, this._uiHash());
  			}
  
  			this.fromOutside = false;
  			return false;
  		}
  
  		if(!noPropagation) this._trigger("beforeStop", event, this._uiHash());
  
  		//$(this.placeholder[0]).remove(); would have been the jQuery way - unfortunately, it unbinds ALL events from the original node!
  		this.placeholder[0].parentNode.removeChild(this.placeholder[0]);
  
  		if(this.helper[0] != this.currentItem[0]) this.helper.remove(); this.helper = null;
  
  		if(!noPropagation) {
  			for (var i=0; i < delayedTriggers.length; i++) { delayedTriggers[i].call(this, event); }; //Trigger all delayed events
  			this._trigger("stop", event, this._uiHash());
  		}
  
  		this.fromOutside = false;
  		return true;
  
  	},
  
  	_trigger: function() {
  		if ($.Widget.prototype._trigger.apply(this, arguments) === false) {
  			this.cancel();
  		}
  	},
  
      _delay: function( handler, delay ) {
  		function handlerProxy() {
  			return ( typeof handler === "string" ? instance[ handler ] : handler )
  				.apply( instance, arguments );
  		}
  		var instance = this;
  		return setTimeout( handlerProxy, delay || 0 );
  	},
  
  	_uiHash: function(_inst) {
  		var inst = _inst || this;
  		return {
  			helper: inst.helper,
  			placeholder: inst.placeholder || $([]),
  			position: inst.position,
  			originalPosition: inst.originalPosition,
  			offset: inst.positionAbs,
  			item: inst.currentItem,
  			sender: _inst ? _inst.element : null
  		};
  	}
  
  });
  