      *  @see flashx.textLayout.container.TextContainerManager
      */
     public class RichEditableText extends UIComponent
-        implements IFocusManagerComponent, IIMESupport, ISystemCursorClient, IViewport
+        implements IFocusManagerComponent, IIMESupport, ISystemCursorClient, 
+                   IViewport, IEditableText
     {
         include "../core/Version.as";
         

    import mx.resources.ResourceManager;
    import mx.utils.StringUtil;
    
    import spark.components.supportClasses.RichEditableTextContainerManager;
    import spark.core.CSSTextLayoutFormat;
    import spark.core.IViewport;

            invalidateDisplayList();
        }
        
        //----------------------------------
        // isTruncated
        //----------------------------------
        
        /**
         *  @private
         */
        public function get isTruncated():Boolean
        {
            // This class does not support truncation
            return false;
        }
               
        //----------------------------------
        // percentHeight
        //----------------------------------
