package lib {
	
	import mx.controls.dataGridClasses.DataGridColumn;
	import mx.core.ClassFactory;
	
	public class RatingColumn extends DataGridColumn {
		
		public function RatingColumn(dataFieldParam:String) {
			dataField = dataFieldParam;
			var c:ClassFactory = new ClassFactory();
			c.properties = {dataField: dataFieldParam};
			c.generator = RatingItemRenderer;
			itemRenderer = c;
			sortCompareFunction = sortRating;
			rendererIsEditor = true;
		}
		private function sortRating(obj1:Object, obj2:Object):int {
			var d1:Number = Number(obj1[dataField]);
			var d2:Number = Number(obj2[dataField]);
			var result:int;
			if(d1 < d2) {
				result = -1;
			} else if(d1 == d2) {
				result = 0;
			} else {
				result = 1;
			}
			return result;
		}
		
	}

}