hp.add( defaultValue );
final CheckBox hide = new CheckBox( new StringBuilder(GuidedDecisionTableConstants.INSTANCE.HideThisColumn()).append(GuidedDecisionTableConstants.COLON).toString() );
hide.setStyleName( "form-field" );
hide.setValue( at.isHideColumn() );
hide.addClickHandler( new ClickHandler() {
public void onClick( ClickEvent sender ) {
at.setHideColumn( hide.getValue() );
dtable.setColumnVisibility( at,
!at.isHideColumn() );
setColumnLabelStyleWhenHidden( label,