package examples
     {
         import vegas.events.ModelObjectEvent;
         import vegas.models.maps.IndexedMapModelObject;
         import vegas.vo.FilterVO;
         
         import flash.display.Sprite;
         import flash.events.KeyboardEvent;
         import flash.ui.Keyboard;
         
         public class IndexedMapModelObjectExample extends Sprite 
         {
             public function IndexedMapModelObjectExample()
             {
                 model = new IndexedMapModelObject() ;
                 
                 model.addEventListener( ModelObjectEvent.ADD_VO    , debug ) ;
                 model.addEventListener( ModelObjectEvent.CHANGE_VO , debug ) ;
                 
                 var count:uint = 4 ;
                 
                 for (var i:int ; i < count ; i++ ) 
                 {
                     model.addVO( new FilterVO( { id : i , filter : i << 1 } ) ) ;
                 }
                 
                 model.index = 0 ;
                 
                 stage.addEventListener( KeyboardEvent.KEY_DOWN , keyDown ) ;
             }
             
             public var model:IndexedMapModelObject ;
             
             public function debug( e:ModelObjectEvent ):void
             {
                 trace( "type:" + e.type + " vo:" + e.getVO() + " index:" + model.index ) ;
             }
             
             public function keyDown( e:KeyboardEvent ):void
             {
                 var code:uint = e.keyCode ;
                 switch( code )
                 {
                     case Keyboard.LEFT :
                     {
                         model.index -- ;
                         break ;
                     }
                     case Keyboard.RIGHT :
                     {
                         model.index ++ ;
                         break ;
                     }
                 }
             }
         }
     }