datagridcolumn.cs

不错的人事管理系统

using System;

namespace System.Web.UI.WebControls
{
	/// <summary>
	/// Summary description for DataGridColumn.
	/// </summary>
	public abstract class DataGridColumn : System.Web.UI.IStateManager
	{
		private System.Web.UI.WebControls.DataGrid owner;
		private System.Web.UI.WebControls.TableItemStyle itemStyle;
		private System.Web.UI.WebControls.TableItemStyle headerStyle;
		private System.Web.UI.WebControls.TableItemStyle footerStyle;
		private System.Web.UI.StateBag statebag;
		private bool marked;
		private bool designMode;

//		public DataGridColumn()
//		{
//			this.statebag = new StateBag();
//		}

		public DataGridColumn() : base() 
		{
			this.statebag = new StateBag();
		}

		bool System.Web.UI.IStateManager.get_IsTrackingViewState() 
		{
			return this.IsTrackingViewState;
		}

		void System.Web.UI.IStateManager.LoadViewState(object state) 
		{
			this.LoadViewState(state);
		}

		object System.Web.UI.IStateManager.SaveViewState() 
		{
			return this.SaveViewState();
		}

		void System.Web.UI.IStateManager.TrackViewState() 
		{
			this.TrackViewState();
		}

		bool System.Web.UI.IStateManager.IsTrackingViewState
		{
			get
			{
				return this.IsTrackingViewState;
			}
		}

		public virtual void Initialize() 
		{
			if (this.owner != null && this.owner.Site != null)
				this.designMode = this.owner.Site.DesignMode;
		}

		
		public virtual void InitializeCell(TableCell cell, int columnIndex, ListItemType itemType) 
		{
			WebControl local0;
			bool local1;
			string local2;
			string local3;
			ImageButton local4;
			Image local5;
			string local6;
			LinkButton local7;
			string local8;
			ListItemType local9;

			local9 = itemType;
			switch (local9) 
			{
				case ListItemType.Header:
					local0 = null;
					local1 = true;
					local2 = null;
					if (this.owner != null && !(this.owner.AllowSorting))
						local1 = false;
					if (local1) 
					{
						local2 = this.SortExpression;
						if (local2.Length == 0)
							local1 = false;
					}
					local3 = this.HeaderImageUrl;
					if (local3.Length != 0) 
					{
						if (local1) 
						{
							local4 = new ImageButton();
							local4.ImageUrl = this.HeaderImageUrl;
							local4.CommandName = "Sort";
							local4.CommandArgument = local2;
							local4.CausesValidation = false;
							local0 = local4;
							goto i0;
						}
						local5 = new Image();
						local5.ImageUrl = local3;
						local0 = local5;
					}
					else 
					{
						local6 = this.HeaderText;
						if (local1) 
						{
							local7 = new DataGridLinkButton();
							local7.Text = local6;
							local7.CommandName = "Sort";
							local7.CommandArgument = local2;
							local7.CausesValidation = false;
							local0 = local7;
						}
						else 
						{
							if (local6.Length == 0)
								local6 = "&nbsp;";
							cell.Text = local6;
						}
					}
					i0: if (local0 == null)
							goto i1;
					cell.Controls.Add(local0);
					return;
					break;
				case ListItemType.Footer:
					local8 = this.FooterText;
					if (local8.Length == 0)
						local8 = "&nbsp;";
					cell.Text = local8;
					return;
					i1: return;
					break;
				default:
					return;
			}
		}

		protected virtual void TrackViewState() 
		{
			this.marked = true;
			this.ViewState.TrackViewState();
			if (this.itemStyle != null)
				this.itemStyle.TrackViewState();
			if (this.headerStyle != null)
				this.headerStyle.TrackViewState();
			if (this.footerStyle != null)
				this.footerStyle.TrackViewState();
			if (this.itemStyle != null)
				this.itemStyle.TrackViewState();
		}

		protected virtual void LoadViewState(object savedState) 
		{
			object[] local0;

			if (savedState != null) 
			{
				local0 = (object[]) savedState;
				if (local0[0] != null)
					this.ViewState.LoadViewState(local0[0]);
				if (local0[1] != null)
					this.ItemStyle.LoadViewState(local0[1]);
				if (local0[2] != null)
					this.HeaderStyle.LoadViewState(local0[2]);
				if (local0[3] != null)
					this.FooterStyle.LoadViewState(local0[3]);
			}
		}
		
		protected virtual object SaveViewState() 
		{
			object local0;
			object local1;
			object local2;
			object local3;
			object[] local4;

			local0 = this.ViewState.SaveViewState();
			local1 = (this.itemStyle != null) ? this.itemStyle.SaveViewState() : null;
			local2 = (this.itemStyle != null) ? this.headerStyle.SaveViewState() : null;
			local3 = (this.itemStyle != null) ? this.footerStyle.SaveViewState() : null;


			if (local0 != null || local1 != null || local2 != null || local3 != null) 
			{
				local4 = new Object[4];
				local4[0] = local0;
				local4[1] = local1;
				local4[2] = local2;
				local4[3] = local3;
				return local4;
			}
			return null;
		}

		protected bool IsTrackingViewState
		{
			get
			{
				return this.marked;
			}
		}

		protected StateBag ViewState
		{
			get
			{
				return this.statebag;
			}
		}

		public virtual TableItemStyle HeaderStyle
		{
			get
			{
				if (this.headerStyle == null) 
				{
					this.headerStyle = new TableItemStyle();
					if (this.IsTrackingViewState)
						this.headerStyle.TrackViewState();
				}
				return this.headerStyle;
			}
		}

		public virtual TableItemStyle ItemStyle
		{
			get
			{
				if (this.itemStyle == null) 
				{
					this.itemStyle = new TableItemStyle();
					if (this.IsTrackingViewState)
						this.itemStyle.TrackViewState();
				}
				return this.itemStyle;
			}
		}

		public virtual TableItemStyle FooterStyle
		{
			get
			{
				if (this.footerStyle == null) 
				{
					this.footerStyle = new TableItemStyle();
					if (this.IsTrackingViewState)
						this.footerStyle.TrackViewState();
				}
				return this.footerStyle;
			}
		}

		internal void SetOwner(DataGrid owner) 
		{
			this.owner = owner;
		}

		protected virtual void OnColumnChanged() 
		{
			if (this.owner != null)
				this.owner.OnColumnsChanged();
		}

		public virtual string FooterText
		{
			get
			{
				object local0;

				local0 = this.ViewState["FooterText"];
				if (local0 != null)
					return (String) local0;
				return System.String.Empty;
			}
		}

		public virtual string HeaderText
		{
			get
			{
				object local0;

				local0 = this.ViewState["HeaderText"];
				if (local0 != null)
					return (String) local0;
				return System.String.Empty;
			}
			set
			{
				this.ViewState["HeaderText"] = value;
				this.OnColumnChanged();
			}
		}

		public virtual string SortExpression
		{
			get
			{
				object local0;

				local0 = this.ViewState["SortExpression"];
				if (local0 != null)
					return (String) local0;
				return System.String.Empty;
			}
			set
			{
				this.ViewState["SortExpression"] = value;
				this.OnColumnChanged();
			}
		}


		public bool Visible
		{
			get
			{
				throw new Exception("TODO");
			}
			set
			{
				throw new Exception("TODO");
			}
		}
		
		protected bool DesignMode 
		{
			get
			{
				return this.designMode;
			}
		}
		
		internal TableItemStyle FooterStyleInternal 
		{
			get
			{
				return this.footerStyle;
			}
			set
			{
				this.footerStyle = value;
			}
		}

		
		internal TableItemStyle ItemStyleInternal 
		{
			get
			{
				return this.itemStyle;
			}
			set
			{
				this.itemStyle = value;
			}
		}

		protected DataGrid Owner
		{
			get
			{
				return this.owner;
			}
		}

		
		public virtual string HeaderImageUrl
		{
			get
			{
				object local0;

				local0 = this.ViewState["HeaderImageUrl"];
				if (local0 != null)
					return (String) local0;
				return System.String.Empty;
			}
			set
			{
				this.ViewState["HeaderImageUrl"]= value;
				this.OnColumnChanged();
			}
		}


	}

}