Fixed removing items from list

1 files changed, 1285 insertions, 2 deletions

diff --git a/vendor/assets/javascripts/Sortable.js b/vendor/assets/javascripts/Sortable.js
index 2b95aca685e..eca7c5012b2 100644
--- a/vendor/assets/javascripts/Sortable.js
+++ b/vendor/assets/javascripts/Sortable.js
@@ -1,2 +1,1285 @@
-/*! Sortable 1.4.2 - MIT | git://github.com/rubaxa/Sortable.git */
-!function(a){"use strict";"function"==typeof define&&define.amd?define(a):"undefined"!=typeof module&&"undefined"!=typeof module.exports?module.exports=a():"undefined"!=typeof Package?Sortable=a():window.Sortable=a()}(function(){"use strict";function a(a,b){if(!a||!a.nodeType||1!==a.nodeType)throw"Sortable: `el` must be HTMLElement, and not "+{}.toString.call(a);this.el=a,this.options=b=s({},b),a[M]=this;var c={group:Math.random(),sort:!0,disabled:!1,store:null,handle:null,scroll:!0,scrollSensitivity:30,scrollSpeed:10,draggable:/[uo]l/i.test(a.nodeName)?"li":">*",ghostClass:"sortable-ghost",chosenClass:"sortable-chosen",ignore:"a, img",filter:null,animation:0,setData:function(a,b){a.setData("Text",b.textContent)},dropBubble:!1,dragoverBubble:!1,dataIdAttr:"data-id",delay:0,forceFallback:!1,fallbackClass:"sortable-fallback",fallbackOnBody:!1};for(var d in c)!(d in b)&&(b[d]=c[d]);W(b);for(var f in this)"_"===f.charAt(0)&&(this[f]=this[f].bind(this));this.nativeDraggable=b.forceFallback?!1:Q,e(a,"mousedown",this._onTapStart),e(a,"touchstart",this._onTapStart),this.nativeDraggable&&(e(a,"dragover",this),e(a,"dragenter",this)),U.push(this._onDragOver),b.store&&this.sort(b.store.get(this))}function b(a){w&&w.state!==a&&(h(w,"display",a?"none":""),!a&&w.state&&x.insertBefore(w,t),w.state=a)}function c(a,b,c){if(a){c=c||O;do if(">*"===b&&a.parentNode===c||q(a,b))return a;while(a!==c&&(a=a.parentNode))}return null}function d(a){a.dataTransfer&&(a.dataTransfer.dropEffect="move"),a.preventDefault()}function e(a,b,c){a.addEventListener(b,c,!1)}function f(a,b,c){a.removeEventListener(b,c,!1)}function g(a,b,c){if(a)if(a.classList)a.classList[c?"add":"remove"](b);else{var d=(" "+a.className+" ").replace(L," ").replace(" "+b+" "," ");a.className=(d+(c?" "+b:"")).replace(L," ")}}function h(a,b,c){var d=a&&a.style;if(d){if(void 0===c)return O.defaultView&&O.defaultView.getComputedStyle?c=O.defaultView.getComputedStyle(a,""):a.currentStyle&&(c=a.currentStyle),void 0===b?c:c[b];b in d||(b="-webkit-"+b),d[b]=c+("string"==typeof c?"":"px")}}function i(a,b,c){if(a){var d=a.getElementsByTagName(b),e=0,f=d.length;if(c)for(;f>e;e++)c(d[e],e);return d}return[]}function j(a,b,c,d,e,f,g){var h=O.createEvent("Event"),i=(a||b[M]).options,j="on"+c.charAt(0).toUpperCase()+c.substr(1);h.initEvent(c,!0,!0),h.to=b,h.from=e||b,h.item=d||b,h.clone=w,h.oldIndex=f,h.newIndex=g,b.dispatchEvent(h),i[j]&&i[j].call(a,h)}function k(a,b,c,d,e,f){var g,h,i=a[M],j=i.options.onMove;return g=O.createEvent("Event"),g.initEvent("move",!0,!0),g.to=b,g.from=a,g.dragged=c,g.draggedRect=d,g.related=e||b,g.relatedRect=f||b.getBoundingClientRect(),a.dispatchEvent(g),j&&(h=j.call(i,g)),h}function l(a){a.draggable=!1}function m(){S=!1}function n(a,b){var c=a.lastElementChild,d=c.getBoundingClientRect();return(b.clientY-(d.top+d.height)>5||b.clientX-(d.right+d.width)>5)&&c}function o(a){for(var b=a.tagName+a.className+a.src+a.href+a.textContent,c=b.length,d=0;c--;)d+=b.charCodeAt(c);return d.toString(36)}function p(a,b){var c=0;if(!a||!a.parentNode)return-1;for(;a&&(a=a.previousElementSibling);)"TEMPLATE"!==a.nodeName.toUpperCase()&&q(a,b)&&c++;return c}function q(a,b){if(a){b=b.split(".");var c=b.shift().toUpperCase(),d=new RegExp("\\s("+b.join("|")+")(?=\\s)","g");return!(""!==c&&a.nodeName.toUpperCase()!=c||b.length&&((" "+a.className+" ").match(d)||[]).length!=b.length)}return!1}function r(a,b){var c,d;return function(){void 0===c&&(c=arguments,d=this,setTimeout(function(){1===c.length?a.call(d,c[0]):a.apply(d,c),c=void 0},b))}}function s(a,b){if(a&&b)for(var c in b)b.hasOwnProperty(c)&&(a[c]=b[c]);return a}if("undefined"==typeof window||"undefined"==typeof window.document)return function(){throw new Error("Sortable.js requires a window with a document")};var t,u,v,w,x,y,z,A,B,C,D,E,F,G,H,I,J,K={},L=/\s+/g,M="Sortable"+(new Date).getTime(),N=window,O=N.document,P=N.parseInt,Q=!!("draggable"in O.createElement("div")),R=function(a){return a=O.createElement("x"),a.style.cssText="pointer-events:auto","auto"===a.style.pointerEvents}(),S=!1,T=Math.abs,U=([].slice,[]),V=r(function(a,b,c){if(c&&b.scroll){var d,e,f,g,h=b.scrollSensitivity,i=b.scrollSpeed,j=a.clientX,k=a.clientY,l=window.innerWidth,m=window.innerHeight;if(A!==c&&(z=b.scroll,A=c,z===!0)){z=c;do if(z.offsetWidth<z.scrollWidth||z.offsetHeight<z.scrollHeight)break;while(z=z.parentNode)}z&&(d=z,e=z.getBoundingClientRect(),f=(T(e.right-j)<=h)-(T(e.left-j)<=h),g=(T(e.bottom-k)<=h)-(T(e.top-k)<=h)),f||g||(f=(h>=l-j)-(h>=j),g=(h>=m-k)-(h>=k),(f||g)&&(d=N)),(K.vx!==f||K.vy!==g||K.el!==d)&&(K.el=d,K.vx=f,K.vy=g,clearInterval(K.pid),d&&(K.pid=setInterval(function(){d===N?N.scrollTo(N.pageXOffset+f*i,N.pageYOffset+g*i):(g&&(d.scrollTop+=g*i),f&&(d.scrollLeft+=f*i))},24)))}},30),W=function(a){var b=a.group;b&&"object"==typeof b||(b=a.group={name:b}),["pull","put"].forEach(function(a){a in b||(b[a]=!0)}),a.groups=" "+b.name+(b.put.join?" "+b.put.join(" "):"")+" "};return a.prototype={constructor:a,_onTapStart:function(a){var b=this,d=this.el,e=this.options,f=a.type,g=a.touches&&a.touches[0],h=(g||a).target,i=h,k=e.filter;if(!("mousedown"===f&&0!==a.button||e.disabled)&&(h=c(h,e.draggable,d))){if(E=p(h,e.draggable),"function"==typeof k){if(k.call(this,a,h,this))return j(b,i,"filter",h,d,E),void a.preventDefault()}else if(k&&(k=k.split(",").some(function(a){return a=c(i,a.trim(),d),a?(j(b,a,"filter",h,d,E),!0):void 0})))return void a.preventDefault();(!e.handle||c(i,e.handle,d))&&this._prepareDragStart(a,g,h)}},_prepareDragStart:function(a,b,c){var d,f=this,h=f.el,j=f.options,k=h.ownerDocument;c&&!t&&c.parentNode===h&&(H=a,x=h,t=c,u=t.parentNode,y=t.nextSibling,G=j.group,d=function(){f._disableDelayedDrag(),t.draggable=!0,g(t,f.options.chosenClass,!0),f._triggerDragStart(b)},j.ignore.split(",").forEach(function(a){i(t,a.trim(),l)}),e(k,"mouseup",f._onDrop),e(k,"touchend",f._onDrop),e(k,"touchcancel",f._onDrop),j.delay?(e(k,"mouseup",f._disableDelayedDrag),e(k,"touchend",f._disableDelayedDrag),e(k,"touchcancel",f._disableDelayedDrag),e(k,"mousemove",f._disableDelayedDrag),e(k,"touchmove",f._disableDelayedDrag),f._dragStartTimer=setTimeout(d,j.delay)):d())},_disableDelayedDrag:function(){var a=this.el.ownerDocument;clearTimeout(this._dragStartTimer),f(a,"mouseup",this._disableDelayedDrag),f(a,"touchend",this._disableDelayedDrag),f(a,"touchcancel",this._disableDelayedDrag),f(a,"mousemove",this._disableDelayedDrag),f(a,"touchmove",this._disableDelayedDrag)},_triggerDragStart:function(a){a?(H={target:t,clientX:a.clientX,clientY:a.clientY},this._onDragStart(H,"touch")):this.nativeDraggable?(e(t,"dragend",this),e(x,"dragstart",this._onDragStart)):this._onDragStart(H,!0);try{O.selection?setTimeout(function(){O.selection.empty()}):window.getSelection().removeAllRanges()}catch(b){}},_dragStarted:function(){x&&t&&(g(t,this.options.ghostClass,!0),a.active=this,j(this,x,"start",t,x,E))},_emulateDragOver:function(){if(I){if(this._lastX===I.clientX&&this._lastY===I.clientY)return;this._lastX=I.clientX,this._lastY=I.clientY,R||h(v,"display","none");var a=O.elementFromPoint(I.clientX,I.clientY),b=a,c=" "+this.options.group.name,d=U.length;if(b)do{if(b[M]&&b[M].options.groups.indexOf(c)>-1){for(;d--;)U[d]({clientX:I.clientX,clientY:I.clientY,target:a,rootEl:b});break}a=b}while(b=b.parentNode);R||h(v,"display","")}},_onTouchMove:function(b){if(H){a.active||this._dragStarted(),this._appendGhost();var c=b.touches?b.touches[0]:b,d=c.clientX-H.clientX,e=c.clientY-H.clientY,f=b.touches?"translate3d("+d+"px,"+e+"px,0)":"translate("+d+"px,"+e+"px)";J=!0,I=c,h(v,"webkitTransform",f),h(v,"mozTransform",f),h(v,"msTransform",f),h(v,"transform",f),b.preventDefault()}},_appendGhost:function(){if(!v){var a,b=t.getBoundingClientRect(),c=h(t),d=this.options;v=t.cloneNode(!0),g(v,d.ghostClass,!1),g(v,d.fallbackClass,!0),h(v,"top",b.top-P(c.marginTop,10)),h(v,"left",b.left-P(c.marginLeft,10)),h(v,"width",b.width),h(v,"height",b.height),h(v,"opacity","0.8"),h(v,"position","fixed"),h(v,"zIndex","100000"),h(v,"pointerEvents","none"),d.fallbackOnBody&&O.body.appendChild(v)||x.appendChild(v),a=v.getBoundingClientRect(),h(v,"width",2*b.width-a.width),h(v,"height",2*b.height-a.height)}},_onDragStart:function(a,b){var c=a.dataTransfer,d=this.options;this._offUpEvents(),"clone"==G.pull&&(w=t.cloneNode(!0),h(w,"display","none"),x.insertBefore(w,t)),b?("touch"===b?(e(O,"touchmove",this._onTouchMove),e(O,"touchend",this._onDrop),e(O,"touchcancel",this._onDrop)):(e(O,"mousemove",this._onTouchMove),e(O,"mouseup",this._onDrop)),this._loopId=setInterval(this._emulateDragOver,50)):(c&&(c.effectAllowed="move",d.setData&&d.setData.call(this,c,t)),e(O,"drop",this),setTimeout(this._dragStarted,0))},_onDragOver:function(a){var d,e,f,g=this.el,i=this.options,j=i.group,l=j.put,o=G===j,p=i.sort;if(void 0!==a.preventDefault&&(a.preventDefault(),!i.dragoverBubble&&a.stopPropagation()),J=!0,G&&!i.disabled&&(o?p||(f=!x.contains(t)):G.pull&&l&&(G.name===j.name||l.indexOf&&~l.indexOf(G.name)))&&(void 0===a.rootEl||a.rootEl===this.el)){if(V(a,i,this.el),S)return;if(d=c(a.target,i.draggable,g),e=t.getBoundingClientRect(),f)return b(!0),void(w||y?x.insertBefore(t,w||y):p||x.appendChild(t));if(0===g.children.length||g.children[0]===v||g===a.target&&(d=n(g,a))){if(d){if(d.animated)return;r=d.getBoundingClientRect()}b(o),k(x,g,t,e,d,r)!==!1&&(t.contains(g)||(g.appendChild(t),u=g),this._animate(e,t),d&&this._animate(r,d))}else if(d&&!d.animated&&d!==t&&void 0!==d.parentNode[M]){B!==d&&(B=d,C=h(d),D=h(d.parentNode));var q,r=d.getBoundingClientRect(),s=r.right-r.left,z=r.bottom-r.top,A=/left|right|inline/.test(C.cssFloat+C.display)||"flex"==D.display&&0===D["flex-direction"].indexOf("row"),E=d.offsetWidth>t.offsetWidth,F=d.offsetHeight>t.offsetHeight,H=(A?(a.clientX-r.left)/s:(a.clientY-r.top)/z)>.5,I=d.nextElementSibling,K=k(x,g,t,e,d,r);if(K!==!1){if(S=!0,setTimeout(m,30),b(o),1===K||-1===K)q=1===K;else if(A){var L=t.offsetTop,N=d.offsetTop;q=L===N?d.previousElementSibling===t&&!E||H&&E:N>L}else q=I!==t&&!F||H&&F;t.contains(g)||(q&&!I?g.appendChild(t):d.parentNode.insertBefore(t,q?I:d)),u=t.parentNode,this._animate(e,t),this._animate(r,d)}}}},_animate:function(a,b){var c=this.options.animation;if(c){var d=b.getBoundingClientRect();h(b,"transition","none"),h(b,"transform","translate3d("+(a.left-d.left)+"px,"+(a.top-d.top)+"px,0)"),b.offsetWidth,h(b,"transition","all "+c+"ms"),h(b,"transform","translate3d(0,0,0)"),clearTimeout(b.animated),b.animated=setTimeout(function(){h(b,"transition",""),h(b,"transform",""),b.animated=!1},c)}},_offUpEvents:function(){var a=this.el.ownerDocument;f(O,"touchmove",this._onTouchMove),f(a,"mouseup",this._onDrop),f(a,"touchend",this._onDrop),f(a,"touchcancel",this._onDrop)},_onDrop:function(b){var c=this.el,d=this.options;clearInterval(this._loopId),clearInterval(K.pid),clearTimeout(this._dragStartTimer),f(O,"mousemove",this._onTouchMove),this.nativeDraggable&&(f(O,"drop",this),f(c,"dragstart",this._onDragStart)),this._offUpEvents(),b&&(J&&(b.preventDefault(),!d.dropBubble&&b.stopPropagation()),v&&v.parentNode.removeChild(v),t&&(this.nativeDraggable&&f(t,"dragend",this),l(t),g(t,this.options.ghostClass,!1),g(t,this.options.chosenClass,!1),x!==u?(F=p(t,d.draggable),F>=0&&(j(null,u,"sort",t,x,E,F),j(this,x,"sort",t,x,E,F),j(null,u,"add",t,x,E,F),j(this,x,"remove",t,x,E,F))):(w&&w.parentNode.removeChild(w),t.nextSibling!==y&&(F=p(t,d.draggable),F>=0&&(j(this,x,"update",t,x,E,F),j(this,x,"sort",t,x,E,F)))),a.active&&((null==F||-1===F)&&(F=E),j(this,x,"end",t,x,E,F),this.save()))),this._nulling()},_nulling:function(){a.active===this&&(x=t=u=v=y=w=z=A=H=I=J=F=B=C=G=a.active=null)},handleEvent:function(a){var b=a.type;"dragover"===b||"dragenter"===b?t&&(this._onDragOver(a),d(a)):("drop"===b||"dragend"===b)&&this._onDrop(a)},toArray:function(){for(var a,b=[],d=this.el.children,e=0,f=d.length,g=this.options;f>e;e++)a=d[e],c(a,g.draggable,this.el)&&b.push(a.getAttribute(g.dataIdAttr)||o(a));return b},sort:function(a){var b={},d=this.el;this.toArray().forEach(function(a,e){var f=d.children[e];c(f,this.options.draggable,d)&&(b[a]=f)},this),a.forEach(function(a){b[a]&&(d.removeChild(b[a]),d.appendChild(b[a]))})},save:function(){var a=this.options.store;a&&a.set(this)},closest:function(a,b){return c(a,b||this.options.draggable,this.el)},option:function(a,b){var c=this.options;return void 0===b?c[a]:(c[a]=b,void("group"===a&&W(c)))},destroy:function(){var a=this.el;a[M]=null,f(a,"mousedown",this._onTapStart),f(a,"touchstart",this._onTapStart),this.nativeDraggable&&(f(a,"dragover",this),f(a,"dragenter",this)),Array.prototype.forEach.call(a.querySelectorAll("[draggable]"),function(a){a.removeAttribute("draggable")}),U.splice(U.indexOf(this._onDragOver),1),this._onDrop(),this.el=a=null}},a.utils={on:e,off:f,css:h,find:i,is:function(a,b){return!!c(a,b,a)},extend:s,throttle:r,closest:c,toggleClass:g,index:p},a.create=function(b,c){return new a(b,c)},a.version="1.4.2",a});
+/**!
+ * Sortable
+ * @author	RubaXa   <trash@rubaxa.org>
+ * @license MIT
+ */
+
+
+(function (factory) {
+	"use strict";
+
+	if (typeof define === "function" && define.amd) {
+		define(factory);
+	}
+	else if (typeof module != "undefined" && typeof module.exports != "undefined") {
+		module.exports = factory();
+	}
+	else if (typeof Package !== "undefined") {
+		Sortable = factory();  // export for Meteor.js
+	}
+	else {
+		/* jshint sub:true */
+		window["Sortable"] = factory();
+	}
+})(function () {
+	"use strict";
+
+	var dragEl,
+		parentEl,
+		ghostEl,
+		cloneEl,
+		rootEl,
+		nextEl,
+
+		scrollEl,
+		scrollParentEl,
+
+		lastEl,
+		lastCSS,
+		lastParentCSS,
+
+		oldIndex,
+		newIndex,
+
+		activeGroup,
+		autoScroll = {},
+
+		tapEvt,
+		touchEvt,
+
+		moved,
+
+		/** @const */
+		RSPACE = /\s+/g,
+
+		expando = 'Sortable' + (new Date).getTime(),
+
+		win = window,
+		document = win.document,
+		parseInt = win.parseInt,
+
+		supportDraggable = !!('draggable' in document.createElement('div')),
+		supportCssPointerEvents = (function (el) {
+			el = document.createElement('x');
+			el.style.cssText = 'pointer-events:auto';
+			return el.style.pointerEvents === 'auto';
+		})(),
+
+		_silent = false,
+
+		abs = Math.abs,
+		min = Math.min,
+		slice = [].slice,
+
+		touchDragOverListeners = [],
+
+		_autoScroll = _throttle(function (/**Event*/evt, /**Object*/options, /**HTMLElement*/rootEl) {
+			// Bug: https://bugzilla.mozilla.org/show_bug.cgi?id=505521
+			if (rootEl && options.scroll) {
+				var el,
+					rect,
+					sens = options.scrollSensitivity,
+					speed = options.scrollSpeed,
+
+					x = evt.clientX,
+					y = evt.clientY,
+
+					winWidth = window.innerWidth,
+					winHeight = window.innerHeight,
+
+					vx,
+					vy
+				;
+
+				// Delect scrollEl
+				if (scrollParentEl !== rootEl) {
+					scrollEl = options.scroll;
+					scrollParentEl = rootEl;
+
+					if (scrollEl === true) {
+						scrollEl = rootEl;
+
+						do {
+							if ((scrollEl.offsetWidth < scrollEl.scrollWidth) ||
+								(scrollEl.offsetHeight < scrollEl.scrollHeight)
+							) {
+								break;
+							}
+							/* jshint boss:true */
+						} while (scrollEl = scrollEl.parentNode);
+					}
+				}
+
+				if (scrollEl) {
+					el = scrollEl;
+					rect = scrollEl.getBoundingClientRect();
+					vx = (abs(rect.right - x) <= sens) - (abs(rect.left - x) <= sens);
+					vy = (abs(rect.bottom - y) <= sens) - (abs(rect.top - y) <= sens);
+				}
+
+
+				if (!(vx || vy)) {
+					vx = (winWidth - x <= sens) - (x <= sens);
+					vy = (winHeight - y <= sens) - (y <= sens);
+
+					/* jshint expr:true */
+					(vx || vy) && (el = win);
+				}
+
+
+				if (autoScroll.vx !== vx || autoScroll.vy !== vy || autoScroll.el !== el) {
+					autoScroll.el = el;
+					autoScroll.vx = vx;
+					autoScroll.vy = vy;
+
+					clearInterval(autoScroll.pid);
+
+					if (el) {
+						autoScroll.pid = setInterval(function () {
+							if (el === win) {
+								win.scrollTo(win.pageXOffset + vx * speed, win.pageYOffset + vy * speed);
+							} else {
+								vy && (el.scrollTop += vy * speed);
+								vx && (el.scrollLeft += vx * speed);
+							}
+						}, 24);
+					}
+				}
+			}
+		}, 30),
+
+		_prepareGroup = function (options) {
+			var group = options.group;
+
+			if (!group || typeof group != 'object') {
+				group = options.group = {name: group};
+			}
+
+			['pull', 'put'].forEach(function (key) {
+				if (!(key in group)) {
+					group[key] = true;
+				}
+			});
+
+			options.groups = ' ' + group.name + (group.put.join ? ' ' + group.put.join(' ') : '') + ' ';
+		}
+	;
+
+
+
+	/**
+	 * @class  Sortable
+	 * @param  {HTMLElement}  el
+	 * @param  {Object}       [options]
+	 */
+	function Sortable(el, options) {
+		if (!(el && el.nodeType && el.nodeType === 1)) {
+			throw 'Sortable: `el` must be HTMLElement, and not ' + {}.toString.call(el);
+		}
+
+		this.el = el; // root element
+		this.options = options = _extend({}, options);
+
+
+		// Export instance
+		el[expando] = this;
+
+
+		// Default options
+		var defaults = {
+			group: Math.random(),
+			sort: true,
+			disabled: false,
+			store: null,
+			handle: null,
+			scroll: true,
+			scrollSensitivity: 30,
+			scrollSpeed: 10,
+			draggable: /[uo]l/i.test(el.nodeName) ? 'li' : '>*',
+			ghostClass: 'sortable-ghost',
+			chosenClass: 'sortable-chosen',
+			ignore: 'a, img',
+			filter: null,
+			animation: 0,
+			setData: function (dataTransfer, dragEl) {
+				dataTransfer.setData('Text', dragEl.textContent);
+			},
+			dropBubble: false,
+			dragoverBubble: false,
+			dataIdAttr: 'data-id',
+			delay: 0,
+			forceFallback: false,
+			fallbackClass: 'sortable-fallback',
+			fallbackOnBody: false,
+			fallbackTolerance: 0
+		};
+
+
+		// Set default options
+		for (var name in defaults) {
+			!(name in options) && (options[name] = defaults[name]);
+		}
+
+		_prepareGroup(options);
+
+		// Bind all private methods
+		for (var fn in this) {
+			if (fn.charAt(0) === '_') {
+				this[fn] = this[fn].bind(this);
+			}
+		}
+
+		// Setup drag mode
+		this.nativeDraggable = options.forceFallback ? false : supportDraggable;
+
+		// Bind events
+		_on(el, 'mousedown', this._onTapStart);
+		_on(el, 'touchstart', this._onTapStart);
+
+		if (this.nativeDraggable) {
+			_on(el, 'dragover', this);
+			_on(el, 'dragenter', this);
+		}
+
+		touchDragOverListeners.push(this._onDragOver);
+
+		// Restore sorting
+		options.store && this.sort(options.store.get(this));
+	}
+
+
+	Sortable.prototype = /** @lends Sortable.prototype */ {
+		constructor: Sortable,
+
+		_onTapStart: function (/** Event|TouchEvent */evt) {
+			var _this = this,
+				el = this.el,
+				options = this.options,
+				type = evt.type,
+				touch = evt.touches && evt.touches[0],
+				target = (touch || evt).target,
+				originalTarget = target,
+				filter = options.filter,
+				startIndex;
+
+			// Don't trigger start event when an element is been dragged, otherwise the evt.oldindex always wrong when set option.group.
+			if (dragEl) {
+				return;
+			}
+
+			if (type === 'mousedown' && evt.button !== 0 || options.disabled) {
+				return; // only left button or enabled
+			}
+
+			target = _closest(target, options.draggable, el);
+
+			if (!target) {
+				return;
+			}
+
+			if (options.handle && !_closest(originalTarget, options.handle, el)) {
+				return;
+			}
+
+			// Get the index of the dragged element within its parent
+			startIndex = _index(target, options.draggable);
+
+			// Check filter
+			if (typeof filter === 'function') {
+				if (filter.call(this, evt, target, this)) {
+					_dispatchEvent(_this, originalTarget, 'filter', target, el, startIndex);
+					evt.preventDefault();
+					return; // cancel dnd
+				}
+			}
+			else if (filter) {
+				filter = filter.split(',').some(function (criteria) {
+					criteria = _closest(originalTarget, criteria.trim(), el);
+
+					if (criteria) {
+						_dispatchEvent(_this, criteria, 'filter', target, el, startIndex);
+						return true;
+					}
+				});
+
+				if (filter) {
+					evt.preventDefault();
+					return; // cancel dnd
+				}
+			}
+
+			// Prepare `dragstart`
+			this._prepareDragStart(evt, touch, target, startIndex);
+		},
+
+		_prepareDragStart: function (/** Event */evt, /** Touch */touch, /** HTMLElement */target, /** Number */startIndex) {
+			var _this = this,
+				el = _this.el,
+				options = _this.options,
+				ownerDocument = el.ownerDocument,
+				dragStartFn;
+
+			if (target && !dragEl && (target.parentNode === el)) {
+				tapEvt = evt;
+
+				rootEl = el;
+				dragEl = target;
+				parentEl = dragEl.parentNode;
+				nextEl = dragEl.nextSibling;
+				activeGroup = options.group;
+				oldIndex = startIndex;
+
+				this._lastX = (touch || evt).clientX;
+				this._lastY = (touch || evt).clientY;
+
+				dragStartFn = function () {
+					// Delayed drag has been triggered
+					// we can re-enable the events: touchmove/mousemove
+					_this._disableDelayedDrag();
+
+					// Make the element draggable
+					dragEl.draggable = true;
+
+					// Chosen item
+					_toggleClass(dragEl, _this.options.chosenClass, true);
+
+					// Bind the events: dragstart/dragend
+					_this._triggerDragStart(touch);
+
+					// Drag start event
+					_dispatchEvent(_this, rootEl, 'choose', dragEl, rootEl, oldIndex);
+				};
+
+				// Disable "draggable"
+				options.ignore.split(',').forEach(function (criteria) {
+					_find(dragEl, criteria.trim(), _disableDraggable);
+				});
+
+				_on(ownerDocument, 'mouseup', _this._onDrop);
+				_on(ownerDocument, 'touchend', _this._onDrop);
+				_on(ownerDocument, 'touchcancel', _this._onDrop);
+
+				if (options.delay) {
+					// If the user moves the pointer or let go the click or touch
+					// before the delay has been reached:
+					// disable the delayed drag
+					_on(ownerDocument, 'mouseup', _this._disableDelayedDrag);
+					_on(ownerDocument, 'touchend', _this._disableDelayedDrag);
+					_on(ownerDocument, 'touchcancel', _this._disableDelayedDrag);
+					_on(ownerDocument, 'mousemove', _this._disableDelayedDrag);
+					_on(ownerDocument, 'touchmove', _this._disableDelayedDrag);
+
+					_this._dragStartTimer = setTimeout(dragStartFn, options.delay);
+				} else {
+					dragStartFn();
+				}
+			}
+		},
+
+		_disableDelayedDrag: function () {
+			var ownerDocument = this.el.ownerDocument;
+
+			clearTimeout(this._dragStartTimer);
+			_off(ownerDocument, 'mouseup', this._disableDelayedDrag);
+			_off(ownerDocument, 'touchend', this._disableDelayedDrag);
+			_off(ownerDocument, 'touchcancel', this._disableDelayedDrag);
+			_off(ownerDocument, 'mousemove', this._disableDelayedDrag);
+			_off(ownerDocument, 'touchmove', this._disableDelayedDrag);
+		},
+
+		_triggerDragStart: function (/** Touch */touch) {
+			if (touch) {
+				// Touch device support
+				tapEvt = {
+					target: dragEl,
+					clientX: touch.clientX,
+					clientY: touch.clientY
+				};
+
+				this._onDragStart(tapEvt, 'touch');
+			}
+			else if (!this.nativeDraggable) {
+				this._onDragStart(tapEvt, true);
+			}
+			else {
+				_on(dragEl, 'dragend', this);
+				_on(rootEl, 'dragstart', this._onDragStart);
+			}
+
+			try {
+				if (document.selection) {
+					document.selection.empty();
+				} else {
+					window.getSelection().removeAllRanges();
+				}
+			} catch (err) {
+			}
+		},
+
+		_dragStarted: function () {
+			if (rootEl && dragEl) {
+				// Apply effect
+				_toggleClass(dragEl, this.options.ghostClass, true);
+
+				Sortable.active = this;
+
+				// Drag start event
+				_dispatchEvent(this, rootEl, 'start', dragEl, rootEl, oldIndex);
+			}
+		},
+
+		_emulateDragOver: function () {
+			if (touchEvt) {
+				if (this._lastX === touchEvt.clientX && this._lastY === touchEvt.clientY) {
+					return;
+				}
+
+				this._lastX = touchEvt.clientX;
+				this._lastY = touchEvt.clientY;
+
+				if (!supportCssPointerEvents) {
+					_css(ghostEl, 'display', 'none');
+				}
+
+				var target = document.elementFromPoint(touchEvt.clientX, touchEvt.clientY),
+					parent = target,
+					groupName = ' ' + this.options.group.name + '',
+					i = touchDragOverListeners.length;
+
+				if (parent) {
+					do {
+						if (parent[expando] && parent[expando].options.groups.indexOf(groupName) > -1) {
+							while (i--) {
+								touchDragOverListeners[i]({
+									clientX: touchEvt.clientX,
+									clientY: touchEvt.clientY,
+									target: target,
+									rootEl: parent
+								});
+							}
+
+							break;
+						}
+
+						target = parent; // store last element
+					}
+					/* jshint boss:true */
+					while (parent = parent.parentNode);
+				}
+
+				if (!supportCssPointerEvents) {
+					_css(ghostEl, 'display', '');
+				}
+			}
+		},
+
+
+		_onTouchMove: function (/**TouchEvent*/evt) {
+			if (tapEvt) {
+				var	options = this.options,
+					fallbackTolerance = options.fallbackTolerance,
+					touch = evt.touches ? evt.touches[0] : evt,
+					dx = touch.clientX - tapEvt.clientX,
+					dy = touch.clientY - tapEvt.clientY,
+					translate3d = evt.touches ? 'translate3d(' + dx + 'px,' + dy + 'px,0)' : 'translate(' + dx + 'px,' + dy + 'px)';
+
+				// only set the status to dragging, when we are actually dragging
+				if (!Sortable.active) {
+					if (fallbackTolerance &&
+						min(abs(touch.clientX - this._lastX), abs(touch.clientY - this._lastY)) < fallbackTolerance
+					) {
+						return;
+					}
+
+					this._dragStarted();
+				}
+
+				// as well as creating the ghost element on the document body
+				this._appendGhost();
+
+				moved = true;
+				touchEvt = touch;
+
+				_css(ghostEl, 'webkitTransform', translate3d);
+				_css(ghostEl, 'mozTransform', translate3d);
+				_css(ghostEl, 'msTransform', translate3d);
+				_css(ghostEl, 'transform', translate3d);
+
+				evt.preventDefault();
+			}
+		},
+
+		_appendGhost: function () {
+			if (!ghostEl) {
+				var rect = dragEl.getBoundingClientRect(),
+					css = _css(dragEl),
+					options = this.options,
+					ghostRect;
+
+				ghostEl = dragEl.cloneNode(true);
+
+				_toggleClass(ghostEl, options.ghostClass, false);
+				_toggleClass(ghostEl, options.fallbackClass, true);
+
+				_css(ghostEl, 'top', rect.top - parseInt(css.marginTop, 10));
+				_css(ghostEl, 'left', rect.left - parseInt(css.marginLeft, 10));
+				_css(ghostEl, 'width', rect.width);
+				_css(ghostEl, 'height', rect.height);
+				_css(ghostEl, 'opacity', '0.8');
+				_css(ghostEl, 'position', 'fixed');
+				_css(ghostEl, 'zIndex', '100000');
+				_css(ghostEl, 'pointerEvents', 'none');
+
+				options.fallbackOnBody && document.body.appendChild(ghostEl) || rootEl.appendChild(ghostEl);
+
+				// Fixing dimensions.
+				ghostRect = ghostEl.getBoundingClientRect();
+				_css(ghostEl, 'width', rect.width * 2 - ghostRect.width);
+				_css(ghostEl, 'height', rect.height * 2 - ghostRect.height);
+			}
+		},
+
+		_onDragStart: function (/**Event*/evt, /**boolean*/useFallback) {
+			var dataTransfer = evt.dataTransfer,
+				options = this.options;
+
+			this._offUpEvents();
+
+			if (activeGroup.pull == 'clone') {
+				cloneEl = dragEl.cloneNode(true);
+				_css(cloneEl, 'display', 'none');
+				rootEl.insertBefore(cloneEl, dragEl);
+				_dispatchEvent(this, rootEl, 'clone', dragEl);
+			}
+
+			if (useFallback) {
+				if (useFallback === 'touch') {
+					// Bind touch events
+					_on(document, 'touchmove', this._onTouchMove);
+					_on(document, 'touchend', this._onDrop);
+					_on(document, 'touchcancel', this._onDrop);
+				} else {
+					// Old brwoser
+					_on(document, 'mousemove', this._onTouchMove);
+					_on(document, 'mouseup', this._onDrop);
+				}
+
+				this._loopId = setInterval(this._emulateDragOver, 50);
+			}
+			else {
+				if (dataTransfer) {
+					dataTransfer.effectAllowed = 'move';
+					options.setData && options.setData.call(this, dataTransfer, dragEl);
+				}
+
+				_on(document, 'drop', this);
+				setTimeout(this._dragStarted, 0);
+			}
+		},
+
+		_onDragOver: function (/**Event*/evt) {
+			var el = this.el,
+				target,
+				dragRect,
+				revert,
+				options = this.options,
+				group = options.group,
+				groupPut = group.put,
+				isOwner = (activeGroup === group),
+				canSort = options.sort;
+
+			if (evt.preventDefault !== void 0) {
+				evt.preventDefault();
+				!options.dragoverBubble && evt.stopPropagation();
+			}
+
+			moved = true;
+
+			if (activeGroup && !options.disabled &&
+				(isOwner
+					? canSort || (revert = !rootEl.contains(dragEl)) // Reverting item into the original list
+					: activeGroup.pull && groupPut && (
+						(activeGroup.name === group.name) || // by Name
+						(groupPut.indexOf && ~groupPut.indexOf(activeGroup.name)) // by Array
+					)
+				) &&
+				(evt.rootEl === void 0 || evt.rootEl === this.el) // touch fallback
+			) {
+				// Smart auto-scrolling
+				_autoScroll(evt, options, this.el);
+
+				if (_silent) {
+					return;
+				}
+
+				target = _closest(evt.target, options.draggable, el);
+				dragRect = dragEl.getBoundingClientRect();
+
+				if (revert) {
+					_cloneHide(true);
+					parentEl = rootEl; // actualization
+
+					if (cloneEl || nextEl) {
+						rootEl.insertBefore(dragEl, cloneEl || nextEl);
+					}
+					else if (!canSort) {
+						rootEl.appendChild(dragEl);
+					}
+
+					return;
+				}
+
+
+				if ((el.children.length === 0) || (el.children[0] === ghostEl) ||
+					(el === evt.target) && (target = _ghostIsLast(el, evt))
+				) {
+
+					if (target) {
+						if (target.animated) {
+							return;
+						}
+
+						targetRect = target.getBoundingClientRect();
+					}
+
+					_cloneHide(isOwner);
+
+					if (_onMove(rootEl, el, dragEl, dragRect, target, targetRect) !== false) {
+						if (!dragEl.contains(el)) {
+							el.appendChild(dragEl);
+							parentEl = el; // actualization
+						}
+
+						this._animate(dragRect, dragEl);
+						target && this._animate(targetRect, target);
+					}
+				}
+				else if (target && !target.animated && target !== dragEl && (target.parentNode[expando] !== void 0)) {
+					if (lastEl !== target) {
+						lastEl = target;
+						lastCSS = _css(target);
+						lastParentCSS = _css(target.parentNode);
+					}
+
+
+					var targetRect = target.getBoundingClientRect(),
+						width = targetRect.right - targetRect.left,
+						height = targetRect.bottom - targetRect.top,
+						floating = /left|right|inline/.test(lastCSS.cssFloat + lastCSS.display)
+							|| (lastParentCSS.display == 'flex' && lastParentCSS['flex-direction'].indexOf('row') === 0),
+						isWide = (target.offsetWidth > dragEl.offsetWidth),
+						isLong = (target.offsetHeight > dragEl.offsetHeight),
+						halfway = (floating ? (evt.clientX - targetRect.left) / width : (evt.clientY - targetRect.top) / height) > 0.5,
+						nextSibling = target.nextElementSibling,
+						moveVector = _onMove(rootEl, el, dragEl, dragRect, target, targetRect),
+						after
+					;
+
+					if (moveVector !== false) {
+						_silent = true;
+						setTimeout(_unsilent, 30);
+
+						_cloneHide(isOwner);
+
+						if (moveVector === 1 || moveVector === -1) {
+							after = (moveVector === 1);
+						}
+						else if (floating) {
+							var elTop = dragEl.offsetTop,
+								tgTop = target.offsetTop;
+
+							if (elTop === tgTop) {
+								after = (target.previousElementSibling === dragEl) && !isWide || halfway && isWide;
+							}
+							else if (target.previousElementSibling === dragEl || dragEl.previousElementSibling === target) {
+								after = (evt.clientY - targetRect.top) / height > 0.5;
+							} else {
+								after = tgTop > elTop;
+							}
+						} else {
+							after = (nextSibling !== dragEl) && !isLong || halfway && isLong;
+						}
+
+						if (!dragEl.contains(el)) {
+							if (after && !nextSibling) {
+								el.appendChild(dragEl);
+							} else {
+								target.parentNode.insertBefore(dragEl, after ? nextSibling : target);
+							}
+						}
+
+						parentEl = dragEl.parentNode; // actualization
+
+						this._animate(dragRect, dragEl);
+						this._animate(targetRect, target);
+					}
+				}
+			}
+		},
+
+		_animate: function (prevRect, target) {
+			var ms = this.options.animation;
+
+			if (ms) {
+				var currentRect = target.getBoundingClientRect();
+
+				_css(target, 'transition', 'none');
+				_css(target, 'transform', 'translate3d('
+					+ (prevRect.left - currentRect.left) + 'px,'
+					+ (prevRect.top - currentRect.top) + 'px,0)'
+				);
+
+				target.offsetWidth; // repaint
+
+				_css(target, 'transition', 'all ' + ms + 'ms');
+				_css(target, 'transform', 'translate3d(0,0,0)');
+
+				clearTimeout(target.animated);
+				target.animated = setTimeout(function () {
+					_css(target, 'transition', '');
+					_css(target, 'transform', '');
+					target.animated = false;
+				}, ms);
+			}
+		},
+
+		_offUpEvents: function () {
+			var ownerDocument = this.el.ownerDocument;
+
+			_off(document, 'touchmove', this._onTouchMove);
+			_off(ownerDocument, 'mouseup', this._onDrop);
+			_off(ownerDocument, 'touchend', this._onDrop);
+			_off(ownerDocument, 'touchcancel', this._onDrop);
+		},
+
+		_onDrop: function (/**Event*/evt) {
+			var el = this.el,
+				options = this.options;
+
+			clearInterval(this._loopId);
+			clearInterval(autoScroll.pid);
+			clearTimeout(this._dragStartTimer);
+
+			// Unbind events
+			_off(document, 'mousemove', this._onTouchMove);
+
+			if (this.nativeDraggable) {
+				_off(document, 'drop', this);
+				_off(el, 'dragstart', this._onDragStart);
+			}
+
+			this._offUpEvents();
+
+			if (evt) {
+				if (moved) {
+					evt.preventDefault();
+					!options.dropBubble && evt.stopPropagation();
+				}
+
+				ghostEl && ghostEl.parentNode.removeChild(ghostEl);
+
+				if (dragEl) {
+					if (this.nativeDraggable) {
+						_off(dragEl, 'dragend', this);
+					}
+
+					_disableDraggable(dragEl);
+
+					// Remove class's
+					_toggleClass(dragEl, this.options.ghostClass, false);
+					_toggleClass(dragEl, this.options.chosenClass, false);
+
+					if (rootEl !== parentEl) {
+						newIndex = _index(dragEl, options.draggable);
+
+						if (newIndex >= 0) {
+							// drag from one list and drop into another
+							_dispatchEvent(null, parentEl, 'sort', dragEl, rootEl, oldIndex, newIndex);
+							_dispatchEvent(this, rootEl, 'sort', dragEl, rootEl, oldIndex, newIndex);
+
+							// Add event
+							_dispatchEvent(null, parentEl, 'add', dragEl, rootEl, oldIndex, newIndex);
+
+							// Remove event
+							_dispatchEvent(this, rootEl, 'remove', dragEl, rootEl, oldIndex, newIndex);
+						}
+					}
+					else {
+						// Remove clone
+						cloneEl && cloneEl.parentNode.removeChild(cloneEl);
+
+						if (dragEl.nextSibling !== nextEl) {
+							// Get the index of the dragged element within its parent
+							newIndex = _index(dragEl, options.draggable);
+
+							if (newIndex >= 0) {
+								// drag & drop within the same list
+								_dispatchEvent(this, rootEl, 'update', dragEl, rootEl, oldIndex, newIndex);
+								_dispatchEvent(this, rootEl, 'sort', dragEl, rootEl, oldIndex, newIndex);
+							}
+						}
+					}
+
+					if (Sortable.active) {
+						if (newIndex === null || newIndex === -1) {
+							newIndex = oldIndex;
+						}
+
+						_dispatchEvent(this, rootEl, 'end', dragEl, rootEl, oldIndex, newIndex);
+
+						// Save sorting
+						this.save();
+					}
+				}
+
+			}
+
+			this._nulling();
+		},
+
+		_nulling: function () {
+			rootEl =
+			dragEl =
+			parentEl =
+			ghostEl =
+			nextEl =
+			cloneEl =
+
+			scrollEl =
+			scrollParentEl =
+
+			tapEvt =
+			touchEvt =
+
+			moved =
+			newIndex =
+
+			lastEl =
+			lastCSS =
+
+			activeGroup =
+			Sortable.active = null;
+		},
+
+		handleEvent: function (/**Event*/evt) {
+			var type = evt.type;
+
+			if (type === 'dragover' || type === 'dragenter') {
+				if (dragEl) {
+					this._onDragOver(evt);
+					_globalDragOver(evt);
+				}
+			}
+			else if (type === 'drop' || type === 'dragend') {
+				this._onDrop(evt);
+			}
+		},
+
+
+		/**
+		 * Serializes the item into an array of string.
+		 * @returns {String[]}
+		 */
+		toArray: function () {
+			var order = [],
+				el,
+				children = this.el.children,
+				i = 0,
+				n = children.length,
+				options = this.options;
+
+			for (; i < n; i++) {
+				el = children[i];
+				if (_closest(el, options.draggable, this.el)) {
+					order.push(el.getAttribute(options.dataIdAttr) || _generateId(el));
+				}
+			}
+
+			return order;
+		},
+
+
+		/**
+		 * Sorts the elements according to the array.
+		 * @param  {String[]}  order  order of the items
+		 */
+		sort: function (order) {
+			var items = {}, rootEl = this.el;
+
+			this.toArray().forEach(function (id, i) {
+				var el = rootEl.children[i];
+
+				if (_closest(el, this.options.draggable, rootEl)) {
+					items[id] = el;
+				}
+			}, this);
+
+			order.forEach(function (id) {
+				if (items[id]) {
+					rootEl.removeChild(items[id]);
+					rootEl.appendChild(items[id]);
+				}
+			});
+		},
+
+
+		/**
+		 * Save the current sorting
+		 */
+		save: function () {
+			var store = this.options.store;
+			store && store.set(this);
+		},
+
+
+		/**
+		 * For each element in the set, get the first element that matches the selector by testing the element itself and traversing up through its ancestors in the DOM tree.
+		 * @param   {HTMLElement}  el
+		 * @param   {String}       [selector]  default: `options.draggable`
+		 * @returns {HTMLElement|null}
+		 */
+		closest: function (el, selector) {
+			return _closest(el, selector || this.options.draggable, this.el);
+		},
+
+
+		/**
+		 * Set/get option
+		 * @param   {string} name
+		 * @param   {*}      [value]
+		 * @returns {*}
+		 */
+		option: function (name, value) {
+			var options = this.options;
+
+			if (value === void 0) {
+				return options[name];
+			} else {
+				options[name] = value;
+
+				if (name === 'group') {
+					_prepareGroup(options);
+				}
+			}
+		},
+
+
+		/**
+		 * Destroy
+		 */
+		destroy: function () {
+			var el = this.el;
+
+			el[expando] = null;
+
+			_off(el, 'mousedown', this._onTapStart);
+			_off(el, 'touchstart', this._onTapStart);
+
+			if (this.nativeDraggable) {
+				_off(el, 'dragover', this);
+				_off(el, 'dragenter', this);
+			}
+
+			// Remove draggable attributes
+			Array.prototype.forEach.call(el.querySelectorAll('[draggable]'), function (el) {
+				el.removeAttribute('draggable');
+			});
+
+			touchDragOverListeners.splice(touchDragOverListeners.indexOf(this._onDragOver), 1);
+
+			this._onDrop();
+
+			this.el = el = null;
+		}
+	};
+
+
+	function _cloneHide(state) {
+		if (cloneEl && (cloneEl.state !== state)) {
+			_css(cloneEl, 'display', state ? 'none' : '');
+			!state && cloneEl.state && rootEl.insertBefore(cloneEl, dragEl);
+			cloneEl.state = state;
+		}
+	}
+
+
+	function _closest(/**HTMLElement*/el, /**String*/selector, /**HTMLElement*/ctx) {
+		if (el) {
+			ctx = ctx || document;
+
+			do {
+				if ((selector === '>*' && el.parentNode === ctx) || _matches(el, selector)) {
+					return el;
+				}
+			}
+			while (el !== ctx && (el = el.parentNode));
+		}
+
+		return null;
+	}
+
+
+	function _globalDragOver(/**Event*/evt) {
+		if (evt.dataTransfer) {
+			evt.dataTransfer.dropEffect = 'move';
+		}
+		evt.preventDefault();
+	}
+
+
+	function _on(el, event, fn) {
+		el.addEventListener(event, fn, false);
+	}
+
+
+	function _off(el, event, fn) {
+		el.removeEventListener(event, fn, false);
+	}
+
+
+	function _toggleClass(el, name, state) {
+		if (el) {
+			if (el.classList) {
+				el.classList[state ? 'add' : 'remove'](name);
+			}
+			else {
+				var className = (' ' + el.className + ' ').replace(RSPACE, ' ').replace(' ' + name + ' ', ' ');
+				el.className = (className + (state ? ' ' + name : '')).replace(RSPACE, ' ');
+			}
+		}
+	}
+
+
+	function _css(el, prop, val) {
+		var style = el && el.style;
+
+		if (style) {
+			if (val === void 0) {
+				if (document.defaultView && document.defaultView.getComputedStyle) {
+					val = document.defaultView.getComputedStyle(el, '');
+				}
+				else if (el.currentStyle) {
+					val = el.currentStyle;
+				}
+
+				return prop === void 0 ? val : val[prop];
+			}
+			else {
+				if (!(prop in style)) {
+					prop = '-webkit-' + prop;
+				}
+
+				style[prop] = val + (typeof val === 'string' ? '' : 'px');
+			}
+		}
+	}
+
+
+	function _find(ctx, tagName, iterator) {
+		if (ctx) {
+			var list = ctx.getElementsByTagName(tagName), i = 0, n = list.length;
+
+			if (iterator) {
+				for (; i < n; i++) {
+					iterator(list[i], i);
+				}
+			}
+
+			return list;
+		}
+
+		return [];
+	}
+
+
+
+	function _dispatchEvent(sortable, rootEl, name, targetEl, fromEl, startIndex, newIndex) {
+		var evt = document.createEvent('Event'),
+			options = (sortable || rootEl[expando]).options,
+			onName = 'on' + name.charAt(0).toUpperCase() + name.substr(1);
+
+		evt.initEvent(name, true, true);
+
+		evt.to = rootEl;
+		evt.from = fromEl || rootEl;
+		evt.item = targetEl || rootEl;
+		evt.clone = cloneEl;
+
+		evt.oldIndex = startIndex;
+		evt.newIndex = newIndex;
+
+		rootEl.dispatchEvent(evt);
+
+		if (options[onName]) {
+			options[onName].call(sortable, evt);
+		}
+	}
+
+
+	function _onMove(fromEl, toEl, dragEl, dragRect, targetEl, targetRect) {
+		var evt,
+			sortable = fromEl[expando],
+			onMoveFn = sortable.options.onMove,
+			retVal;
+
+		evt = document.createEvent('Event');
+		evt.initEvent('move', true, true);
+
+		evt.to = toEl;
+		evt.from = fromEl;
+		evt.dragged = dragEl;
+		evt.draggedRect = dragRect;
+		evt.related = targetEl || toEl;
+		evt.relatedRect = targetRect || toEl.getBoundingClientRect();
+
+		fromEl.dispatchEvent(evt);
+
+		if (onMoveFn) {
+			retVal = onMoveFn.call(sortable, evt);
+		}
+
+		return retVal;
+	}
+
+
+	function _disableDraggable(el) {
+		el.draggable = false;
+	}
+
+
+	function _unsilent() {
+		_silent = false;
+	}
+
+
+	/** @returns {HTMLElement|false} */
+	function _ghostIsLast(el, evt) {
+		var lastEl = el.lastElementChild,
+				rect = lastEl.getBoundingClientRect();
+
+		return ((evt.clientY - (rect.top + rect.height) > 5) || (evt.clientX - (rect.right + rect.width) > 5)) && lastEl; // min delta
+	}
+
+
+	/**
+	 * Generate id
+	 * @param   {HTMLElement} el
+	 * @returns {String}
+	 * @private
+	 */
+	function _generateId(el) {
+		var str = el.tagName + el.className + el.src + el.href + el.textContent,
+			i = str.length,
+			sum = 0;
+
+		while (i--) {
+			sum += str.charCodeAt(i);
+		}
+
+		return sum.toString(36);
+	}
+
+	/**
+	 * Returns the index of an element within its parent for a selected set of
+	 * elements
+	 * @param  {HTMLElement} el
+	 * @param  {selector} selector
+	 * @return {number}
+	 */
+	function _index(el, selector) {
+		var index = 0;
+
+		if (!el || !el.parentNode) {
+			return -1;
+		}
+
+		while (el && (el = el.previousElementSibling)) {
+			if ((el.nodeName.toUpperCase() !== 'TEMPLATE') && (selector === '>*' || _matches(el, selector))) {
+				index++;
+			}
+		}
+
+		return index;
+	}
+
+	function _matches(/**HTMLElement*/el, /**String*/selector) {
+		if (el) {
+			selector = selector.split('.');
+
+			var tag = selector.shift().toUpperCase(),
+				re = new RegExp('\\s(' + selector.join('|') + ')(?=\\s)', 'g');
+
+			return (
+				(tag === '' || el.nodeName.toUpperCase() == tag) &&
+				(!selector.length || ((' ' + el.className + ' ').match(re) || []).length == selector.length)
+			);
+		}
+
+		return false;
+	}
+
+	function _throttle(callback, ms) {
+		var args, _this;
+
+		return function () {
+			if (args === void 0) {
+				args = arguments;
+				_this = this;
+
+				setTimeout(function () {
+					if (args.length === 1) {
+						callback.call(_this, args[0]);
+					} else {
+						callback.apply(_this, args);
+					}
+
+					args = void 0;
+				}, ms);
+			}
+		};
+	}
+
+	function _extend(dst, src) {
+		if (dst && src) {
+			for (var key in src) {
+				if (src.hasOwnProperty(key)) {
+					dst[key] = src[key];
+				}
+			}
+		}
+
+		return dst;
+	}
+
+
+	// Export utils
+	Sortable.utils = {
+		on: _on,
+		off: _off,
+		css: _css,
+		find: _find,
+		is: function (el, selector) {
+			return !!_closest(el, selector, el);
+		},
+		extend: _extend,
+		throttle: _throttle,
+		closest: _closest,
+		toggleClass: _toggleClass,
+		index: _index
+	};
+
+
+	/**
+	 * Create sortable instance
+	 * @param {HTMLElement}  el
+	 * @param {Object}      [options]
+	 */
+	Sortable.create = function (el, options) {
+		return new Sortable(el, options);
+	};
+
+
+	// Export
+	Sortable.version = '1.4.2';
+	return Sortable;
+});