@Override
	public void valueChanged(ListSelectionEvent e) {
		if (e.getSource() == orderingList) {
			System.out.println(orderingList.getSelectedIndex());
			// check if order list is empty
			if (orderingList.getSelectedIndex() > -1) {
				// separate the text in the selected list item
				String[] values = orderingList.getSelectedValue().split("\\t");
				// call method to set the current combobox item according to the product name of the
				// selected list item
				setSelectedProductComboboxItem(values[0]);
			}
			removeButton.setEnabled(true);
			cancelButton.setEnabled(true);
		}
	}