void HandleItem(object sender)
        {
            ToolStripMenuItem item = null;

            if (sender is ToolStripMenuItem)
            {
                item = (ToolStripMenuItem)sender;
            }

            if (item != null)
            {
                TextNode node = (TextNode)item.Tag;
                node.Language = (SupportedLanguage)SupportedLanguage.Parse(typeof(SupportedLanguage), item.Text);
            }
        }