using System;
using System.Web;

namespace book06
{
	/// <summary>
	/// AppPageCounter 的摘要說明。
	/// </summary>
	public class AppPageCounter : IPageCounter
	{
		public AppPageCounter()
		{
			if (HttpContext.Current.Application["PageCount"] == null)
			{
				HttpContext.Current.Application.Add("PageCount", 0);
			}
		}
		#region IPageCounter 成員

		public int GetPageCount()
		{
			return (int)HttpContext.Current.Application["PageCount"];
		}

		public void SetPageCount(int iCount)
		{
			HttpContext.Current.Application.Lock();
			if (HttpContext.Current.Application["PageCount"] == null)
			{
				HttpContext.Current.Application.Add("PageCount", 0);
			}
			else
			{
				HttpContext.Current.Application["PageCount"] = iCount;
			}
			HttpContext.Current.Application.UnLock();
		}

		public void IncreasePageCount()
		{
			HttpContext.Current.Application.Lock();
			HttpContext.Current.Application["PageCount"] = GetPageCount() + 1;
			HttpContext.Current.Application.UnLock();
		}

		#endregion
	}
}