private void moveItemUp() {
int index = menuItemsTable.getSelectedRow();
// Return if nothing was selected.
if (index == -1) return;
// Return if the first item is selected.
if (index == 0) return;
nodeAttributesDialog.moveParameterItemUp(parameter, index);
// TODO: Changing the selection doesn't have any effect on Mac.
menuItemsTable.changeSelection(index - 1, 1, false, false);
}
