using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Web;


namespace Song.ViewData
{
 /// <summary>
 /// 接口的父类
 /// </summary>
 public abstract class ViewMethod
 {
 /// <summary>
 /// 客户端传来的参数
 /// </summary>
 public Letter Letter
 {
 get
 {
 System.Web.HttpContext _context = System.Web.HttpContext.Current;
 string sessionid = _context.Items["SessionID"].ToString();
 Letter letter = LetterBox.Get(sessionid);
 if (letter == null) letter = Letter.Constructor(_context);
 return letter;
 }
 }
 /// <summary>
 /// 当前HttpContext
 /// </summary>
 public System.Web.HttpContext Context
 {
 get
 { 
 return System.Web.HttpContext.Current;
 }
 }
 /// <summary>
 /// 当前登录的账号
 /// </summary>
 /// <returns></returns>
 public Song.Entities.Accounts User
 {
 get
 {
 return LoginAccount.Status.User(this.Letter);
 }
 }
 /// <summary>
 /// 当前登录的管理员
 /// </summary>
 /// <returns></returns>
 public Song.Entities.EmpAccount Admin
 {
 get
 {
 return LoginAdmin.Status.User(this.Letter);
 }
 }
 /// <summary>
 /// 当前登录的教师
 /// </summary>
 public Song.Entities.Teacher Teacher
 {
 get
 {
 return LoginAccount.Status.Teacher(this.Letter);
 }
 }
 /// <summary>
 /// 上传来的文件
 /// </summary>
 public HttpFileCollectionBase Files
 {
 get
 {
 return this.Letter.Files;
 }
 }
 }
}