Button sub = new Button( GuidedRuleEditorResources.CONSTANTS.ShowSubFields() );
popup.addAttribute( GuidedRuleEditorResources.CONSTANTS.ApplyAConstraintToASubFieldOf0( con.getFieldName() ),
sub );
sub.addClickHandler( new ClickHandler() {
public void onClick( ClickEvent event ) {
popup.hide();
popupCreator.showPatternPopup( fp,
con,
true );
}
} );