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[Bindable]private var arrayCollection:ArrayCollection;

Rx.http(function(result:XML):void {
  arrayCollection = convertXml(result);
  list.dataProvider = arrayCollection;
}).invoke("offers.fxml");

public static function toArray(obj:Object):Array {
  if (!obj) 
    return [];
  else if (obj is Array)
    return obj as Array;
  else
    return [ obj ];
}
    	
private function convertXml(file:String):ArrayCollection {
  var xml:XMLDocument = new XMLDocument(file);

  var decoder:SimpleXMLDecoder = new SimpleXMLDecoder();
  var data:Object = decoder.decodeXML(xml);
  var array:Array = data == null ? new Array() : toArray(data.offers.offer);
  
  return new ArrayCollection(array);
}