using System;
using System.Data;
using System.Configuration;
using System.Linq;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.HtmlControls;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Xml.Linq;
using Sitecore.Web.UI.WebControls;

namespace _071114
{
	public class MyCacheableControl : CachingEnabledControl
	{
		protected override void CreateChildControls()
		{
			if ( IsSitecoreCached )
				return;

			Controls.Clear();

			// This method gets executed every single time, regardless of whether or not Sitecore cache is output
			System.Threading.Thread.Sleep( 10000 );

			Controls.Add( new LiteralControl( "Now: " + DateTime.Now.ToString() ) );

			base.CreateChildControls();
		}
	}

	public class CachingEnabledControl : System.Web.UI.Control
	{
		public bool IsSitecoreCached
		{
			get
			{
				Control c = Parent;
				while ( c != null && !(c is Sublayout) )
				{
					c = c.Parent;
					if ( c == null )
						break;
				}

				if ( c != null )
				{
					Sublayout sl = c as Sublayout;

					if ( Sitecore.Caching.CacheManager.GetHtmlCache( Sitecore.Context.Site ).InnerCache.ContainsKey( sl.GetCacheKey() ) )
					{
						return true;
					}
				}

				return false;
			}
		}
	}
}