private void moveItemDown() {
int index = menuItemsTable.getSelectedRow();
// Return if nothing was selected.
if (index == -1) return;
java.util.List<Parameter.MenuItem> items = parameter.getMenuItems();
// Return if the last item is selected.
if (index >= items.size() - 1) return;
nodeAttributesDialog.moveParameterItemDown(parameter, index);
// TODO: Changing the selection doesn't have any effect on Mac.
menuItemsTable.changeSelection(index + 1, 1, false, false);
}
