default.aspx.cs

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using System;
using System.Collections;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Web;
using System.Web.SessionState;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.HtmlControls;
using System.Web.Security;
using Park.Common;

namespace Park
{
	/// <summary>
	/// WebForm1 的摘要说明。
	/// </summary>
	public class MainPage : System.Web.UI.Page
	{
		protected System.Web.UI.WebControls.DataList CommonTask;
		protected System.Web.UI.WebControls.DataList SpecialTask;
		protected System.Web.UI.WebControls.DataList MinorTask;
		protected System.Web.UI.WebControls.Label Message;
		protected System.Web.UI.HtmlControls.HtmlTableCell Content;

		#region main
		/// <summary>
		/// using ParkSetting to get UserView
		/// and initialize
		/// </summary>
		/// <param name="sender"></param>
		/// <param name="e"></param>
		private void Page_Load(object sender, System.EventArgs e)
		{

#if  !Debug
			try
			{
#endif
				// 处理用户提交动作
				ProcessLastContent();
				// 建立用户视图任务列表
				BuildUI();
				// 得到中心视图控件名称
				GetRightContent();
				// 检查权限
				CheckContentRight();
				//添加主视图
				
#if  !Debug
			}

			catch(Exception)
			{
				ContentControl = @"Module/error.ascx";
			}

#endif

			LoadControl();		
			
			this.DataBind();

		}
		#endregion
		#region completed
		/// <summary>
		/// 加载中心视图控件
		/// </summary>
		private void LoadControl()
		{
			Control control;

			//添加主视图
#if  !Debug
			try
			{
#endif
				control=Page.LoadControl( ContentControl );
				Content.Controls.Add( control );
				if( control is IProcessable)
				{
					Session[SessionKey.LastContent] = ContentControl;
					/*Debug
					output.Text = ContentControl;//((Task)settings.FirstIndex[1]).Content;
					*/
				}
				else
					Session[SessionKey.LastContent] = null;
#if  !Debug
			}
			catch (Exception)
			{
				ContentControl = @"Module/error.ascx";
				Content.Controls.Add( Page.LoadControl( ContentControl ) );
				Session[SessionKey.LastContent] = null;
			}
#endif
		}


		/// <summary>
		/// 处理用户提交动作
		/// </summary>
		private void ProcessLastContent()
		{
			//将Session[SessionKey.LastContent]中记录的控件，
 //重新加载并调用Process方法,用来处理用户提交的表单内容,并更改数据库.
    		lastcontent = (string)Session[SessionKey.LastContent];
			Session[SessionKey.LastContent] = null;
			if( lastcontent==null || lastcontent.Equals("")) return ;
			
			Control control = Page.LoadControl( lastcontent );
			if(control is IProcessable)
			{//调用控件中process方法实现事件处理
				((IProcessable)control).Process();		
			}
			control.Dispose();
		}

		/// <summary>
		/// 检查权限,调用UserDB的CheckContentRight方法
		/// </summary>
		private void CheckContentRight()
		{
			if (! UserDB.CheckContentRight(Role,ContentControl,out nextcontent) )
				ContentControl =  @"Module/AccessDenied.ascx";
		}

		/// <summary>
		/// 得到中心视图控件名称
		/// </summary>
		private void GetRightContent()
		{
			string content = Request["Content"];
			if(!(content==null||content.Equals(""))) 
			{
				ContentControl = content;
				Session[SessionKey.ChangeContent] = content;
				return;
			}
			content = Request[QueryKey.ChangeContent];

			if(content == null || content.Equals("") ) content = (string)Session[SessionKey.ChangeContent];

			if(content==null||content.Equals("")) return;
			else ContentControl = content;

			Session[SessionKey.ChangeContent] = content;

		}

		/// <summary>
		/// 建立用户视图任务列表
		/// </summary>
		private void BuildUI()
		{
			//Initialize User Page View
			// Get roles from UserRoles table, and add to cookie
			role=UserDB.GetRole(User.Identity.Name);
//获取用户当前操作列表的选择
			string childindex = Request[ QueryKey.ChangeChildIndex ];

			if(childindex == null || childindex.Equals("") ) childindex = (string)Session[SessionKey.ChangeChildIndex];
//获取用户操作权限列表
			ParkSettings settings = new ParkSettings( role , childindex);
//绑定数据源
			CommonTask.DataSource = settings.FirstIndex;
			SpecialTask.DataSource = settings.SecondIndex;
			MinorTask.DataSource = settings.ThirdIndex;
//通过用户是否有操作设置DataList是否可见
			if( settings.View.FirstIndex.Equals("") ) CommonTask.Visible=false;
			if( settings.View.SecondIndex.Equals("") ) SpecialTask.Visible=false;
			if( settings.View.ThirdIndex.Equals("") && ( childindex==null || childindex.Equals("") ) ) MinorTask.Visible=false;
				
			ContentControl = settings.View.Content;
//记录用户当前操作列表的选择			
            Session[SessionKey.ChangeChildIndex] = childindex;
		}

		/// <summary>
		/// 用户ID
		/// </summary>
		public string UserName
		{
			get
			{
				if(HttpContext.Current == null)	return "";
				return HttpContext.Current.User.Identity.Name;
			}
		}

		protected string role;

		/// <summary>
		/// 用户角色
		/// </summary>
		public string Role
		{
			get
			{	
				return role;
			}
		}

		protected string lastcontent;

		/// <summary>
		/// 上一个视图
		/// </summary>
		public string LastContent
				{
					get
					{	
						return lastcontent;
					}
				}

		protected string content;

		/// <summary>
		/// 当前视图
		/// </summary>
		public string ContentControl
		{
			get
			{	
				return content;
			}
			set
			{
				if(hasError) return;
				content = value;
			}
		}

		private string nextcontent;

		/// <summary>
		/// 下个视图
		/// </summary>
		public string NextContent
		{
			get 
			{
				return nextcontent;
			}
		}

		public bool HasError
		{
			get
			{
				return hasError;
			}
		}

		public string ErrorMessage
		{
			set 
			{
				if ( hasError ) return;
				hasError = true;
				Message.Text = value;
			}
		}
		private bool hasError = false;

		#endregion

		#region Web Form Designer generated code
		override protected void OnInit(EventArgs e)
		{
			//
			// CODEGEN：该调用是 ASP.NET Web 窗体设计器所必需的。
			//
			InitializeComponent();
			base.OnInit(e);
		}
		
		/// <summary>
		/// 设计器支持所需的方法 - 不要使用代码编辑器修改
		/// 此方法的内容。
		/// </summary>
		private void InitializeComponent()
		{    
			this.CommonTask.ItemDataBound += new System.Web.UI.WebControls.DataListItemEventHandler(this.CommonTask_ItemDataBound);
			this.SpecialTask.ItemDataBound += new System.Web.UI.WebControls.DataListItemEventHandler(this.SpecialTask_ItemDataBound);
			this.MinorTask.ItemDataBound += new System.Web.UI.WebControls.DataListItemEventHandler(this.MinorTask_ItemDataBound);
			this.Load += new System.EventHandler(this.Page_Load);

		}
		#endregion

		#region highlightened
		private void CommonTask_ItemDataBound(object sender, System.Web.UI.WebControls.DataListItemEventArgs e)
		{
			//修改当用户单击通用任务时，将选中的行显示不同的颜色
			switch(e.Item.ItemType)
			{
				case ListItemType.AlternatingItem :
					if ( ((Task)e.Item.DataItem).Content.Equals(ContentControl))
						e.Item.BackColor = Color.LightGoldenrodYellow;
					break;
				case ListItemType.Item :
					if ( ((Task)e.Item.DataItem).Content.Equals(ContentControl))
						e.Item.BackColor = Color.LightGoldenrodYellow;
					break;
				default:
					break;
			}
		}

		private void SpecialTask_ItemDataBound(object sender, System.Web.UI.WebControls.DataListItemEventArgs e)
		{
			//修改当用户单击用户任务时，将选中的行显示不同的颜色
			switch(e.Item.ItemType)
			{
				case ListItemType.AlternatingItem :
					if ( ((Task)e.Item.DataItem).Content.Equals(ContentControl)||((Task)e.Item.DataItem).ChildIndexName.Equals(Session[SessionKey.ChangeChildIndex]))
						e.Item.BackColor = Color.LightGoldenrodYellow;
					break;
				case ListItemType.Item :
					if ( ((Task)e.Item.DataItem).Content.Equals(ContentControl)||((Task)e.Item.DataItem).ChildIndexName.Equals(Session[SessionKey.ChangeChildIndex]))
						e.Item.BackColor = Color.LightGoldenrodYellow;
					break;
				default:
					break;
			}
	
		}

		private void MinorTask_ItemDataBound(object sender, System.Web.UI.WebControls.DataListItemEventArgs e)
		{//修改当用户单击用户子任务时，将选中的行显示不同的颜色
			switch(e.Item.ItemType)
			{
				case ListItemType.AlternatingItem :
					if ( ((Task)e.Item.DataItem).Content.Equals(ContentControl))
						e.Item.BackColor = Color.LightGoldenrodYellow;
					break;
				case ListItemType.Item :
					if ( ((Task)e.Item.DataItem).Content.Equals(ContentControl))
						e.Item.BackColor = Color.LightGoldenrodYellow;
					break;
				default:
					break;
			}
		}
		#endregion highlightened
	}
}