HorizontalPanel horiz = new HorizontalPanel();
if ( model.state == ActionCallMethod.TYPE_UNDEFINED ) {
Image edit = new ImageButton( images.addFieldToFact() );
edit.setTitle( constants.AddAnotherFieldToThisSoYouCanSetItsValue() );
edit.addClickHandler( new ClickHandler() {
public void onClick(ClickEvent event) {
Widget w = (Widget) event.getSource();
showAddFieldPopup( w );