using System;

namespace HealthMonitor.Util.QueryObjects
{
	public class Paging
	{
		private int _curPage = 1;
		/// <summary>
		/// 当前页
		/// </summary>
		public int CurPage
		{
			get
			{
				return Math.Min(Math.Max(1, this._curPage), this.PageCount);
			}
			set
			{
				this._curPage = value;
			}
		}

		private int _pageSize = 10;
		/// <summary>
		/// 每页记录数
		/// </summary>
		public int PageSize
		{
			get
			{
				return Math.Max(1, this._pageSize);
			}
			set
			{
				this._pageSize = value;
			}
		}

		private int _totalCount = 0;
		/// <summary>
		/// 总记录数
		/// </summary>
		public int TotalCount
		{
			get { return this._totalCount; }
			set { this._totalCount = value; }
		}

		/// <summary>
		/// 总页数
		/// </summary>
		public int PageCount
		{
			get
			{
				int cnt = (int)Math.Ceiling((double)_totalCount / _pageSize);
				return Math.Max(1, cnt);
			}
		}

		///// <summary>
		///// 计算排号
		///// </summary>
		///// <param name="idx">索引，以0开始计算</param>
		///// <returns></returns>
		//public int CalcSerialNum(int idx)
		//{
		//	if (IsAscendSort)
		//	{
		//		return (CurPage - 1) * PageSize + idx + 1;
		//	}
		//	else
		//	{
		//		return TotalCount - (CurPage - 1) * PageSize - idx;
		//	}
		//}
	}
}