// Author: Fabrice Marguerie
// http://weblogs.asp.net/fmarguerie
// fabrice @ madgeek .com
//
// Free for use

namespace Madgeek.Web.UI.WebControls
{
  #region Imports
	using System;
	using System.Web;
	using System.Web.UI;
	using System.Web.UI.WebControls;
  #endregion

	/// <summary>
	/// DropDownList that generates attributes for ListItems.
	/// </summary>
	public class DropDownList : System.Web.UI.WebControls.DropDownList
	{
		protected override void RenderContents(HtmlTextWriter writer)
		{
			if (Items != null)
			{
				bool selected = false;

				foreach (ListItem listItem in Items)
				{
					writer.WriteBeginTag("option");

					if (listItem.Selected)
					{
						if (selected)
							//throw new HttpException(HttpRuntime.FormatResourceString("Cannot_Multiselect_In_DropDownList"));
							throw new HttpException("Cannot multiselect in DropDownList."); //TODO: this should be language independent
						selected = true;
						writer.WriteAttribute("selected", "selected", false);
					}
					writer.WriteAttribute("value", listItem.Value, true);

					listItem.Attributes.Render(writer); // This is the added code
					//TODO: What happens if "value" or "selected" are in listItem.Attributes?

					writer.Write('>');
					HttpUtility.HtmlEncode(listItem.Text, writer);

					writer.WriteEndTag("option");
					writer.WriteLine();
				}
			}
		}
	}
}