package components
{
	import mx.collections.ICollectionView;
	import mx.collections.IList;
	import mx.controls.ComboBox;
	import mx.binding.utils.BindingUtils;
	
	public class EditableListComboBoxEditor extends EditableListEditor
	{	 
		private var _comboBox:ComboBox;		
		
		public var labelFunction:Function = null;		
		public var dataProvider:ICollectionView;
		
		public function EditableListComboBoxEditor()
		{
			super();			
		}
		
		override public function get data():Object {
			return _comboBox.selectedItem;
		}
		
		override public function update(list:IList):void {
			if(dataProvider != null) {
				dataProvider.filterFunction = function(item:Object):Boolean {
					for each(var xml:XML in XMLList(list)) {
						if(xml == item) {
							return false;
						}
					}
					
					return true;
				};
				dataProvider.refresh();
				
				if(dataProvider.length > 0) {
					_comboBox.selectedIndex = 0;
				}
			}
		} 
		
		override protected function createChildren():void {
			super.createChildren();
			_comboBox = new ComboBox();			
			_comboBox.dataProvider = dataProvider;
			_comboBox.labelFunction = labelFunction;			
			addChild(_comboBox);	
		}
		
		override public function hasContent():Boolean {
			if(dataProvider == null)
				return false;
				
			return dataProvider.length > 0;				
		}
	}
}