/**
 * RightJS-UI Sortable v2.2.0
 * http://rightjs.org/ui/sortable
 *
 * Copyright (C) 2009-2011 Nikolay Nemshilov
 */
var Sortable=RightJS.Sortable=function(a,b){function c(a,c){c||(c=a,a="DIV");var d=new b.Class(b.Element.Wrappers[a]||b.Element,{initialize:function(c,d){this.key=c;var e=[{"class":"rui-"+c}];this instanceof b.Input||this instanceof b.Form||e.unshift(a),this.$super.apply(this,e),b.isString(d)&&(d=b.$(d)),d instanceof b.Element&&(this._=d._,"$listeners"in d&&(d.$listeners=d.$listeners),d={}),this.setOptions(d,this);return b.Wrapper.Cache[b.$uid(this._)]=this},setOptions:function(a,c){c&&(a=b.Object.merge(a,(new Function("return "+(c.get("data-"+this.key)||"{}")))())),a&&b.Options.setOptions.call(this,b.Object.merge(this.options,a));return this}}),e=new b.Class(d,c);b.Observer.createShortcuts(e.prototype,e.EVENTS||b([]));return e}var d=b,e=b.$,f=b.$w,g=b.isString,h=b.isArray,i=b.Object,j=new c("UL",{extend:{version:"2.2.0",EVENTS:f("start change finish"),Options:{url:null,method:"put",Xhr:{},idParam:"id",posParam:"position",parseId:!0,dragClass:"dragging",accept:null,minLength:1,itemCss:"li",handleCss:"li",cssRule:"*[data-sortable]"},current:!1,cast:function(a){a=e(a._),a instanceof j||(a=new j(a));return a}},initialize:function(a,b){this.$super("sortable",a).setOptions(b).addClass("rui-sortable").on("finish",this._tryXhr).on("selectstart","stopEvent")},setOptions:function(a,b){this.$super(a,b),a=this.options;var c=a.accept||[];h(c)||(c=[c]),a.accept=d([this].concat(c)).map(e).uniq();return this},items:function(){return this.children(this.options.itemCss)},startDrag:function(a){if(this.items().length>this.options.minLength){var b=a.find(this.options.itemCss),c=a.find(this.options.handleCss);b&&c&&(this._initDrag(b,a.position()),j.current=this,this.fire("start",this._evOpts(a)))}},moveItem:function(a){var b=a.position(),c=this.itemClone._.style,d=b.y-this.yRDiff,e=b.x-this.xRDiff,f=e+this.cloneWidth,g=d+this.cloneHeight;c.top=b.y-this.yDiff+"px",c.left=b.x-this.xDiff+"px";var h=this.suspects.first(function(a){return(d>a.top&&d<a.topHalf||g<a.bottom&&g>a.topHalf)&&(e>a.left&&e<a.leftHalf||f<a.right&&f>a.leftHalf)});h&&(c=h.item,c.insert(this.item,c.prevSiblings().include(this.item)?"after":"before"),this._findSuspects(),this.fire("change",this._evOpts(a,c)))},finishDrag:function(a){this.itemClone&&(this.itemClone.remove(),this.item.setStyle("visibility:visible")),j.current=!1,this.fire("finish",this._evOpts(a))},_evOpts:function(a,b){b=b||this.item;var c=j.cast(b.parent());return{list:c,item:b,event:a,index:c.items().indexOf(b)}},_initDrag:function(a,b){var c=this.dimensions(),d=a.dimensions(),e=a.clone().setStyle({margin:0,zIndex:9999,position:"absolute",top:"0px",left:"0px"}).addClass(this.options.dragClass).insertTo(this).setHeight(this.cloneHeight=d.height).setWidth(this.cloneWidth=d.width),f=e.position(),g=d.left-f.x,h=d.top-f.y;e.moveTo(g,h),this.item=a.setStyle("visibility:hidden"),this.itemClone=e,this.xDiff=b.x-g,this.yDiff=b.y-h,this.xRDiff=b.x-e.position().x,this.yRDiff=b.y-e.position().y,this._findSuspects()},_findSuspects:function(){var a=this.suspects=d([]),b=this.item,c=this.itemClone;this.options.accept.each(function(d){j.cast(d).items().each(function(d){if(d!==b&&d!==c){var e=d.dimensions();a.push({item:d,top:e.top,left:e.left,right:e.left+e.width,bottom:e.top+e.height,topHalf:e.top+e.height/2,leftHalf:e.left+e.width/2})}})})},_tryXhr:function(a){if(this.options.url){var c=d(this.options.url),e={},f=a.item,h=a.index+1,j=i.merge({method:this.options.method,params:{}},this.options.Xhr),k=f.get("id")||"";this.options.parseId&&k&&(k=(k.match(/\d+/)||[""])[0]),c.include("%{id}")?c=c.replace("%{id}",k):e[this.options.idParam]=k,e[this.options.posParam]=h,g(j.params)?j.params+="&"+i.toQueryString(e):j.params=i.merge(j.params,e),b.Xhr.load(c,j)}}});e(a).on({mousedown:function(a){var b=a.find(j.Options.cssRule+",*.rui-sortable");b&&j.cast(b).startDrag(a)},mousemove:function(a){j.current&&j.current.moveItem(a)},mouseup:function(a){j.current&&j.current.finishDrag(a)}}),e(window).onBlur(function(){j.current&&j.current.finishDrag()});var k=a.createElement("style"),l=a.createTextNode(".rui-sortable{user-select:none;-moz-user-select:none;-webkit-user-select:none}");k.type="text/css",a.getElementsByTagName("head")[0].appendChild(k),k.styleSheet?k.styleSheet.cssText=l.nodeValue:k.appendChild(l);return j}(document,RightJS)