private JComboBox getComboBox(AbstractListModel lm) {
		if (getContentType().equals("text/plain"))
			return null;
		Component[] c = getComponents();
		if (c == null || c.length == 0)
			return null;
		Container container = null;
		JComponent comp = null;
		for (Component x : c) {
			if (x instanceof Container) {
				container = (Container) x;
				comp = (JComponent) container.getComponent(0);
				if (comp instanceof JComboBox) {
					if (lm == ((JComboBox) comp).getModel())
						return (JComboBox) comp;
				}
			}
		}
		return null;
	}