popup.addAttribute( constants.MultipleFieldConstraint(),
horiz );
}
if ( con == null ) {
popup.addRow( new SmallLabel( "<i>" + constants.AdvancedOptionsColon() + "</i>" ) ); //NON-NLS
Button predicate = new Button( constants.NewFormula() );
predicate.addClickHandler( new ClickHandler() {
public void onClick(ClickEvent event) {
SingleFieldConstraint con = new SingleFieldConstraint();
con.setConstraintValueType( SingleFieldConstraint.TYPE_PREDICATE );