(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{window["Sortable"]=factory()}})(function(){"use strict";var dragEl,ghostEl,rootEl,nextEl,lastEl,lastCSS,lastRect,activeGroup,tapEvt,touchEvt,expando="Sortable"+(new Date).getTime(),win=window,document=win.document,parseInt=win.parseInt,supportIEdnd=!!document.createElement("div").dragDrop,_silent=false,_createEvent=function(event,item){var evt=document.createEvent("Event");evt.initEvent(event,true,true);evt.item=item;return evt},noop=function(){},slice=[].slice,touchDragOverListeners=[];function Sortable(el,options){this.el=el;this.options=options=options||{};options.group=options.group||Math.random();options.handle=options.handle||null;options.draggable=options.draggable||el.children[0]&&el.children[0].nodeName||(/[uo]l/i.test(el.nodeName)?"li":"*");options.ghostClass=options.ghostClass||"sortable-ghost";options.onAdd=_bind(this,options.onAdd||noop);options.onUpdate=_bind(this,options.onUpdate||noop);options.onRemove=_bind(this,options.onRemove||noop);el[expando]=options.group;for(var fn in this){if(fn.charAt(0)==="_"){this[fn]=_bind(this,this[fn])}}_on(el,"add",options.onAdd);_on(el,"update",options.onUpdate);_on(el,"remove",options.onRemove);_on(el,"mousedown",this._onTapStart);_on(el,"touchstart",this._onTapStart);supportIEdnd&&_on(el,"selectstart",this._onTapStart);_on(el,"dragover",this._onDragOver);_on(el,"dragenter",this._onDragOver);touchDragOverListeners.push(this._onDragOver)}Sortable.prototype={constructor:Sortable,_applyEffects:function(){_toggleClass(dragEl,this.options.ghostClass,true)},_onTapStart:function(evt){var touch=evt.touches&&evt.touches[0],target=(touch||evt).target,options=this.options,el=this.el;if(options.handle){target=_closest(target,options.handle,el)}target=_closest(target,options.draggable,el);if(target&&evt.type=="selectstart"){if(target.tagName!="A"&&target.tagName!="IMG"){target.dragDrop()}}if(target&&!dragEl&&target.parentNode===el){tapEvt=evt;target.draggable=true;if(typeof options.ignore==="undefined"){options.ignore="a, img"}Array.prototype.forEach.call(options.ignore.split(","),function(criteria){_find(target,criteria.trim(),_disableDraggable)});if(touch){tapEvt={target:target,clientX:touch.clientX,clientY:touch.clientY};this._onDragStart(tapEvt,true);evt.preventDefault()}_on(this.el,"dragstart",this._onDragStart);_on(this.el,"dragend",this._onDrop);_on(document,"dragover",_globalDragOver);try{if(document.selection){document.selection.empty()}else{window.getSelection().removeAllRanges()}}catch(err){}}},_emulateDragOver:function(){if(touchEvt){_css(ghostEl,"display","none");var target=document.elementFromPoint(touchEvt.clientX,touchEvt.clientY),parent=target,group=this.options.group,i=touchDragOverListeners.length;if(parent){do{if(parent[expando]===group){while(i--){touchDragOverListeners[i]({clientX:touchEvt.clientX,clientY:touchEvt.clientY,target:target,rootEl:parent})}break}target=parent}while(parent=parent.parentNode)}_css(ghostEl,"display","")}},_onTouchMove:function(evt){if(tapEvt){var touch=evt.touches[0],dx=touch.clientX-tapEvt.clientX,dy=touch.clientY-tapEvt.clientY;touchEvt=touch;_css(ghostEl,"webkitTransform","translate3d("+dx+"px,"+dy+"px,0)")}},_onDragStart:function(evt,isTouch){var target=evt.target,dataTransfer=evt.dataTransfer;rootEl=this.el;dragEl=target;nextEl=target.nextSibling;activeGroup=this.options.group;if(isTouch){var rect=target.getBoundingClientRect(),css=_css(target),ghostRect;ghostEl=target.cloneNode(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");rootEl.appendChild(ghostEl);ghostRect=ghostEl.getBoundingClientRect();_css(ghostEl,"width",rect.width*2-ghostRect.width);_css(ghostEl,"height",rect.height*2-ghostRect.height);_on(document,"touchmove",this._onTouchMove);_on(document,"touchend",this._onDrop);this._loopId=setInterval(this._emulateDragOver,150)}else{dataTransfer.effectAllowed="move";dataTransfer.setData("Text",target.textContent);_on(document,"drop",this._onDrop)}setTimeout(this._applyEffects)},_onDragOver:function(evt){if(!_silent&&activeGroup===this.options.group&&(evt.rootEl===void 0||evt.rootEl===this.el)){var el=this.el,target=_closest(evt.target,this.options.draggable,el);if(el.children.length===0||el.children[0]===ghostEl||el===evt.target&&_ghostInBottom(el,evt)){el.appendChild(dragEl)}else if(target&&target!==dragEl&&target.parentNode[expando]!==void 0){if(lastEl!==target){lastEl=target;lastCSS=_css(target);lastRect=target.getBoundingClientRect()}var rect=lastRect,width=rect.right-rect.left,height=rect.bottom-rect.top,floating=/left|right|inline/.test(lastCSS.cssFloat+lastCSS.display),skew=(floating?(evt.clientX-rect.left)/width:(evt.clientY-rect.top)/height)>.5,isWide=target.offsetWidth>dragEl.offsetWidth,isLong=target.offsetHeight>dragEl.offsetHeight,nextSibling=target.nextSibling,after;_silent=true;setTimeout(_unsilent,30);if(floating){after=target.previousElementSibling===dragEl&&!isWide||skew>.5&&isWide}else{after=target.nextElementSibling!==dragEl&&!isLong||skew>.5&&isLong}if(after&&!nextSibling){el.appendChild(dragEl)}else{target.parentNode.insertBefore(dragEl,after?nextSibling:target)}}}},_onDrop:function(evt){clearInterval(this._loopId);_off(document,"drop",this._onDrop);_off(document,"dragover",_globalDragOver);_off(this.el,"dragend",this._onDrop);_off(this.el,"dragstart",this._onDragStart);_off(this.el,"selectstart",this._onTapStart);_off(document,"touchmove",this._onTouchMove);_off(document,"touchend",this._onDrop);if(evt){evt.preventDefault();evt.stopPropagation();if(ghostEl){ghostEl.parentNode.removeChild(ghostEl)}if(dragEl){_disableDraggable(dragEl);_toggleClass(dragEl,this.options.ghostClass,false);if(!rootEl.contains(dragEl)){rootEl.dispatchEvent(_createEvent("remove",dragEl));dragEl.dispatchEvent(_createEvent("add",dragEl))}else if(dragEl.nextSibling!==nextEl){dragEl.dispatchEvent(_createEvent("update",dragEl))}}rootEl=dragEl=ghostEl=nextEl=tapEvt=touchEvt=lastEl=lastCSS=activeGroup=null}},destroy:function(){var el=this.el,options=this.options;_off(el,"add",options.onAdd);_off(el,"update",options.onUpdate);_off(el,"remove",options.onRemove);_off(el,"mousedown",this._onTapStart);_off(el,"touchstart",this._onTapStart);_off(el,"selectstart",this._onTapStart);_off(el,"dragover",this._onDragOver);_off(el,"dragenter",this._onDragOver);Array.prototype.forEach.call(el.querySelectorAll("[draggable]"),function(el){el.removeAttribute("draggable")});touchDragOverListeners.splice(touchDragOverListeners.indexOf(this._onDragOver),1);this._onDrop();this.el=null}};function _bind(ctx,fn){var args=slice.call(arguments,2);return fn.bind?fn.bind.apply(fn,[ctx].concat(args)):function(){return fn.apply(ctx,args.concat(slice.call(arguments)))}}function _closest(el,selector,ctx){if(selector==="*"){return el}else if(el){ctx=ctx||document;selector=selector.split(".");var tag=selector.shift().toUpperCase(),re=new RegExp("\\s("+selector.join("|")+")\\s","g");do{if((tag===""||el.nodeName==tag)&&(!selector.length||((" "+el.className+" ").match(re)||[]).length==selector.length)){return el}}while(el!==ctx&&(el=el.parentNode))}return null}function _globalDragOver(evt){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(/\s+/g," ").replace(" "+name+" ","");el.className=className+(state?" "+name:"")}}}function _css(el,prop,val){if(el&&el.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{el.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 _disableDraggable(el){return el.draggable=false}function _unsilent(){_silent=false}function _ghostInBottom(el,evt){var last=el.lastElementChild.getBoundingClientRect();return evt.clientY-(last.top+last.height)>5}Sortable.utils={on:_on,off:_off,css:_css,find:_find,bind:_bind,closest:_closest,toggleClass:_toggleClass};Sortable.version="0.1.9";return Sortable});