/**
 * Namespace: System.Web.UI.WebControls
 * Class:     Label
 *
 * Author:  Gaurav Vaish
 * Maintainer: gvaish@iitk.ac.in
 * Contact: <my_scripts2001@yahoo.com>, <gvaish@iitk.ac.in>
 * Implementation: yes
 * Status:  100%
 *
 * (C) Gaurav Vaish (2001)
 */

using System;
using System.ComponentModel;
using System.Web;
using System.Web.UI;

namespace System.Web.UI.WebControls
{
	[DefaultProperty("Text")]
	//[Designer("??")]
	[ControlBuilder(typeof(LabelControlBuilder))]
	//[DataBindingHandler("??")]
	[ParseChildren(false)]
	[ToolboxData("<{0}:Label runat=\"server\">Label</{0}:Label>")]
	public class Label : WebControl
	{
		public Label (): base ()
		{
		}

		internal Label (HtmlTextWriterTag tagKey) : base (tagKey)
		{
		}

		public virtual string Text
		{
			get {
				object o = ViewState ["Text"];
				return (o == null) ? String.Empty : (string) o;
			}

			set { ViewState ["Text"] = value; }
		}

		protected override void AddParsedSubObject (object obj)
		{
			if(HasControls ()){
				base.AddParsedSubObject (obj);
				return;
			}

			if(obj is LiteralControl){
				Text = ((LiteralControl) obj).Text;
				return;
			}

			if(Text.Length > 0){
				base.AddParsedSubObject (new LiteralControl (Text));
				Text = String.Empty;
			}

			base.AddParsedSubObject (obj);
		}

		protected override void LoadViewState (object savedState)
		{
			if(savedState != null) {
				base.LoadViewState (savedState);
				string savedText = ViewState ["Text"] as string;
				if(savedText != null)
					Text = savedText;
			}
		}

		protected override void RenderContents (HtmlTextWriter writer)
		{
			if(HasControls ())
				base.RenderContents (writer);
			else
				writer.Write (Text);
		}
	}
}