 
 package reprise.ui
 {
+	import reprise.utils.DisplayListUtil;
 	import reprise.core.ApplicationContext;
 	import reprise.core.FocusManager;
 	import reprise.core.UIRendererFactory;

			return m_appContext;
		}
		
		/**
		 * Returns the time that's used as the time for all timed actions executed in the 
		 * current frame.

		
		protected var m_appContext : ApplicationContext;
		protected var m_focusManager : FocusManager;
		protected var m_parentDocument : DocumentView;
		
		protected var m_invalidChildren : Array;
		protected var m_validatedElementsCount : int;
