private OneLineComponent getOneLineComponent(int index) {
      for (int i = getComponentCount(); i <= index; i++) {
        add(new OneLineComponent(),
            new GridBagConstraints(0, i, 1, 1, 1, 0, GridBagConstraints.WEST, GridBagConstraints.HORIZONTAL, JBInsets.emptyInsets(), 0, 0));
      }
      return (OneLineComponent)getComponent(index);
    }
private OneLineComponent getOneLineComponent(int index)