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