private Widget checkBoxEditor(final RuleAttribute at, final boolean isReadOnly) {
final CheckBox box = new CheckBox();
box.setEnabled(!isReadOnly);
if (at.getValue() == null || at.getValue().isEmpty()) {
box.setValue(false);
at.setValue(FALSE_VALUE);
} else {
box.setValue((at.getValue().equals(TRUE_VALUE)));
}
box.addClickHandler(
new ClickHandler() {
public void onClick(ClickEvent event) {
at.setValue((box.getValue()) ? TRUE_VALUE : FALSE_VALUE);
}
});
return box;
}
@Override
public void addCheckBoxHandler(ClickHandler handler) {
cbCabecalho.addClickHandler(handler);
}