if(!Array.prototype.map){Array.prototype.map=function(fun){var len=this.length;if(typeof fun!="function"){throw new TypeError();}
var res=new Array(len);var thisp=arguments[1];for(var i=0;i<len;i++){if(i in this){res[i]=fun.call(thisp,this[i],i,this);}}
return res;};}
Ext.data.PagingMemoryProxy=function(data){Ext.data.PagingMemoryProxy.superclass.constructor.call(this);this.data=data;};Ext.extend(Ext.data.PagingMemoryProxy,Ext.data.MemoryProxy,{load:function(params,reader,callback,scope,arg){params=params||{};var result;try{result=reader.readRecords(this.data);}catch(e){this.fireEvent("loadexception",this,arg,null,e);callback.call(scope,null,arg,false);return;}
if(params.filter!==undefined){result.records=result.records.filter(function(el){if(typeof(el)=="object"){var att=params.filterCol||0;return String(el.data[att]).match(params.filter)?true:false;}else{return String(el).match(params.filter)?true:false;}});result.totalRecords=result.records.length;}
if(params.sort!==undefined){var dir=String(params.dir).toUpperCase()=="DESC"?-1:1;var fn=function(r1,r2){return r1<r2;};result.records.sort(function(a,b){var v=0;if(typeof(a)=="object"){v=fn(a.data[params.sort],b.data[params.sort])*dir;}else{v=fn(a,b)*dir;}
if(v==0){v=(a.index<b.index?-1:1);}
return v;});}
if(params.start!==undefined&&params.limit!==undefined){result.records=result.records.slice(params.start,params.start+params.limit);}
callback.call(scope,result,arg,true);}});