public void onEvent(FormItemRemovedEvent event) {
FBFormItem item = event.getFormItem();
view.removeFormItem(item);
}
});
bus.addHandler(FormItemAddedEvent.TYPE, new FormItemAddedHandler() {
@Override
public void onEvent(FormItemAddedEvent event) {
FBFormItem item = event.getFormItem();
Widget parent = event.getFormItemHolder();
FBCompositeItem parentItem = null;