htmlselect.cs

不错的人事管理系统

using System;
using System.Globalization;
using System.Collections;
using System.Collections.Specialized;
using System.Web.UI.WebControls;

namespace System.Web.UI.HtmlControls
{
	/// <summary>
	/// Summary description for HtmlSelect.
	/// </summary>
	//.custom instance void System.Web.UI.ControlBuilderAttribute
	//.custom instance void [System]System.ComponentModel.DefaultEventAttribute
	//.custom instance void System.Web.UI.ValidationPropertyAttribute
	public class HtmlSelect : HtmlContainerControl,System.Web.UI.IParserAccessor,System.Web.UI.IPostBackDataHandler
	{
		private static object EventServerChange;
		private static char[] SPLIT_CHARS;
		private int cachedSelectedIndex;
		private object dataSource;
		private System.Web.UI.WebControls.ListItemCollection items;

		static HtmlSelect() 
		{
			char[] local0;

			HtmlSelect.EventServerChange = new Object();
			local0 = new Char[1];
			local0[0] = (char)44;
			HtmlSelect.SPLIT_CHARS = local0;
		}

		public HtmlSelect() : base("select") 
		{
			this.cachedSelectedIndex = -1;
		}

		protected virtual void AddParsedSubObject(object obj) 
		{
			if (obj as ListItem != null) 
			{
				this.Items.Add((ListItem) obj);
				return;
			}
			throw new HttpException(System.Web.HttpRuntime.FormatResourceString("Cannot_Have_Children_Of_Type", "HtmlSelect", obj.GetType().Name));
		}

		protected virtual void ClearSelection() 
		{
			int local0;

			local0 = 0;
			while (local0 < this.Items.Count) 
			{
				this.Items[local0].Selected = false;
				local0++;
			}
		}

		protected virtual ControlCollection CreateControlCollection() 
		{
			return new EmptyControlCollection(this);
		}

		protected virtual void LoadViewState(object savedState) 
		{
			Triplet local0;
			object local1;

			if (savedState != null) 
			{
				local0 = (Triplet) savedState;
				this.LoadViewState(local0.First);
				this.Items.LoadViewState(local0.Second);
				local1 = local0.Third;
				if (local1 != null)
					this.Select((int[]) local1);
			}
		}

		protected virtual void OnDataBinding(EventArgs e) 
		{
			IEnumerable local0;
			bool local1;
			string local2;
			string local3;
			ICollection local4;
			object local5;
			ListItem local6;
			IEnumerator local7;
			string local8;
			IDisposable local9;

			this.OnDataBinding(e);
			local0 = System.Web.UI.DataSourceHelper.GetResolvedDataSource(this.DataSource, this.DataMember);
			if (local0 != null) 
			{
				local1 = false;
				local2 = this.DataTextField;
				local3 = this.DataValueField;
				this.Items.Clear();
				local4 = local0 as ICollection;
				if (local4 != null)
//					this.Items.Capacity = local4.Count;
				if (local2.Length != 0 || local3.Length != 0)
					local1 = true;
				local7 = local0.GetEnumerator();
				try 
				{
					while (local7.MoveNext()) 
					{
						local5 = local7.Current;
						local6 = new ListItem();
						if (local1) 
						{
							if (local2.Length > 0)
								local6.Text = System.Web.UI.DataBinder.GetPropertyValue(local5, local2, null);
							if (local3.Length <= 0)
							{
//								goto i0;
							}
							local6.Value = System.Web.UI.DataBinder.GetPropertyValue(local5, local3, null);
						}
						else 
						{
							local6.Value = (local8 = local5.ToString());
							local6.Text = local8;
						}
					i0: this.Items.Add(local6);
					}
				}
				finally 
				{
					local9 = local7 as IDisposable;
					if (local9 == null)
					{
//						goto i-1;
					}
					local9.Dispose();
				}
			}
			if (this.cachedSelectedIndex != -1) 
			{
				this.SelectedIndex = this.cachedSelectedIndex;
				this.cachedSelectedIndex = -1;
			}
		}

		protected virtual void OnPreRender(EventArgs e) 
		{
			if (this.Page != null && this.Size > 1)
				if (!(this.Disabled))
					this.Page.RegisterRequiresPostBack(this);
		}

		protected virtual void OnServerChange(EventArgs e) 
		{
			EventHandler local0;

			local0 = (EventHandler) this.Events[HtmlSelect.EventServerChange];
			if (local0 != null)
				local0.Invoke(this, e);
		}

		protected virtual void RenderAttributes(HtmlTextWriter writer) 
		{
			writer.WriteAttribute("name", this.RenderedNameAttribute);
			this.Attributes.Remove("name");
			this.Attributes.Remove("DataValueField");
			this.Attributes.Remove("DataTextField");
			this.Attributes.Remove("DataMember");
			this.RenderAttributes(writer);
		}

		protected virtual void RenderChildren(HtmlTextWriter writer) 
		{
			bool local0;
			bool local1;
			ListItemCollection local2;
			int local3;
			int local4;
			ListItem local5;

			local0 = false;
			local1 = (this.Multiple == false);
			writer.WriteLine();
			writer.Indent = writer.Indent + 1;
			local2 = this.Items;
			local3 = local2.Count;
			if (local3 > 0) 
			{
				local4 = 0;
				while (local4 < local3) 
				{
					local5 = local2[local4];
					writer.WriteBeginTag("option");
					if (local5.Selected) 
					{
						if (local1) 
						{
							if (local0)
								throw new HttpException(System.Web.HttpRuntime.FormatResourceString("HtmlSelect_Cant_Multiselect_In_Single_Mode"));
							local0 = true;
						}
						writer.WriteAttribute("selected", "selected");
					}
					writer.WriteAttribute("value", local5.Value, true);
					local5.Attributes.Remove("text");
					local5.Attributes.Remove("value");
					local5.Attributes.Remove("selected");
					local5.Attributes.Render(writer);
					writer.Write('>');
					System.Web.HttpUtility.HtmlEncode(local5.Text, writer);
					writer.WriteEndTag("option");
					writer.WriteLine();
					local4++;
				}
			}
			writer.Indent = writer.Indent - 1;
		}

		protected virtual object SaveViewState() 
		{
			object local0;
			object local1;
			object local2;

			local0 = this.SaveViewState();
			local1 = this.Items.SaveViewState();
			local2 = null;
			if (this.Events[HtmlSelect.EventServerChange] != null || this.Disabled || !(this.Visible))
				local2 = this.SelectedIndices;
			if (local2 != null || local1 != null || local0 != null)
				return new Triplet(local0, local1, local2);
			return null;
		}

		protected virtual void Select(int[] selectedIndices) 
		{
			int local0;
			int local1;

			this.ClearSelection();
			local0 = 0;
			while (local0 < (int) selectedIndices.Length) 
			{
				local1 = selectedIndices[local0];
				if (local1 >= 0 && local1 < this.Items.Count)
					this.Items[local1].Selected = true;
				local0++;
			}
		}

		bool System.Web.UI.IPostBackDataHandler.LoadPostData(string postDataKey, NameValueCollection postCollection) 
		{
			string[] local0;
			bool local1;
			int local2;
			int local3;
			int[] local4;
			int[] local5;
			int local6;
			int local7;

			local0 = postCollection.GetValues(postDataKey);
			local1 = false;
			if (local0 != null) 
			{
				if (!(this.Multiple)) 
				{
					local2 = this.Items.FindByValueInternal(local0[0]);
					if (this.SelectedIndex == local2)
						goto i1;
					this.SelectedIndex = local2;
					local1 = true;
					goto i1;
				}
				local3 = (int) local0.Length;
				local4 = this.SelectedIndices;
				local5 = new Int32[checked((uint) local3)];
				local6 = 0;
				while (local6 < local3) 
				{
					local5[local6] = this.Items.FindByValueInternal(local0[local6]);
					local6++;
				}
				if ((int) local4.Length == local3) 
				{
					local7 = 0;
					while (local7 < local3) 
					{
						if (local5[local7] != local4[local7]) 
						{
							local1 = true;
							goto i2;
						}
						local7++;
					}
				}
				else
					local1 = true;
			i2: if (!(local1))
					goto i1;
				this.Select(local5);
			}
			else 	if (this.SelectedIndex != -1) 
			{
				this.SelectedIndex = -1;
				local1 = true;
			}
			i1: return local1;
		}

		void System.Web.UI.IPostBackDataHandler.RaisePostDataChangedEvent() 
		{
			this.OnServerChange(System.EventArgs.Empty);
		}

		protected virtual void TrackViewState() 
		{
			this.TrackViewState();
			this.Items.TrackViewState();
		}

		public event EventHandler ServerChange 
		{
			add
			{
				this.Events.AddHandler(HtmlSelect.EventServerChange, value);
			}
			remove
			{
				this.Events.RemoveHandler(HtmlSelect.EventServerChange, value);
			}
		}

		public virtual string DataMember 
		{
			get
			{
				object local0;

				local0 = this.ViewState["DataMember"];
				if (local0 != null)
					return (String) local0;
				return System.String.Empty;
			}
			set
			{
				this.Attributes["DataMember"]= System.Web.UI.HtmlControls.HtmlControl.MapStringAttributeToString(value);
			}
		}

		public virtual object DataSource
		{
			get
			{
				return this.dataSource;
			}
			set
			{
				if (value != null && value as System.ComponentModel.IListSource == null)
					if (value as IEnumerable == null)
						goto i3;
				this.dataSource = value;
				return;
				i3: throw new ArgumentException(System.Web.HttpRuntime.FormatResourceString("Invalid_DataSource_Type", this.ID));
			}
		}

		public virtual string DataTextField 
		{
			get
			{
				string local0;

				local0 = this.Attributes["DataTextField"];
				if (local0 != null)
					return local0;
				return System.String.Empty;
			}
			set
			{
				this.Attributes["DataTextField"]= System.Web.UI.HtmlControls.HtmlControl.MapStringAttributeToString(value);
			}
		}

		public virtual string DataValueField 
		{
			get
			{
				string local0;

				local0 = this.Attributes["DataValueField"];
				if (local0 != null)
					return local0;
				return System.String.Empty;
			}
			set
			{
				this.Attributes["DataValueField"]= System.Web.UI.HtmlControls.HtmlControl.MapStringAttributeToString(value);
			}
		}

		public virtual string InnerHtml 
		{
			get
			{
				throw new NotSupportedException(System.Web.HttpRuntime.FormatResourceString("InnerHtml_not_supported", this.GetType().Name));
			}
			set
			{
				throw new NotSupportedException(System.Web.HttpRuntime.FormatResourceString("InnerHtml_not_supported", this.GetType().Name));
			}
		}

		public virtual string InnerText 
		{
			get
			{
				throw new NotSupportedException(System.Web.HttpRuntime.FormatResourceString("InnerText_not_supported", this.GetType().Name));
			}
			set
			{
				throw new NotSupportedException(System.Web.HttpRuntime.FormatResourceString("InnerText_not_supported", this.GetType().Name));
			}
		}

		public System.Web.UI.WebControls.ListItemCollection Items
		{
			get
			{
				if (this.items == null) 
				{
					this.items = new ListItemCollection();
					if (this.IsTrackingViewState)
						this.items.TrackViewState();
				}
				return this.items;
			}
		}

		public bool Multiple 
		{
			get
			{
				string local0;

				local0 = this.Attributes["multiple"];
				if (local0 == null)
					return false;
				return local0 == "multiple";
			}
			set
			{
				if (value) 
				{
					this.Attributes["multiple"]= "multiple";
					return;
				}
				this.Attributes["multiple"]= null;
			}
		}

		public string Name 
		{
			get
			{
				return this.UniqueID;
			}
			set
			{
			}
		}

		internal string RenderedNameAttribute 
		{
			get
			{
				return this.Name;
			}
		}

		public virtual int SelectedIndex 
		{
			get
			{
				int local0;

				local0 = 0;
				while (local0 < this.Items.Count) 
				{
					if (this.Items[local0].Selected)
						return local0;
					local0++;
				}
				if (this.Size <= 1 && !(this.Multiple)) 
				{
					if (this.Items.Count > 0)
						this.Items[0].Selected = true;
					return 0;
				}
				return -1;
			}
			set
			{
				if (this.Items.Count == 0) 
				{
					this.cachedSelectedIndex = value;
					return;
				}
				if (value < -1 || value >= this.Items.Count)
					throw new ArgumentOutOfRangeException("value");
				this.ClearSelection();
				if (value >= 0)
					this.Items[value].Selected = true;
			}
		}

		protected virtual int[] SelectedIndices 
		{
			get
			{
				int local0;
				int[] local1;
				int local2;
				int[] local3;
				int[] local4;

				local0 = 0;
				local1 = new Int32[3];
				local2 = 0;
				while (local2 < this.Items.Count) 
				{
					if (this.Items[local2].Selected) 
					{
						if (local0 == (int) local1.Length) 
						{
							local3 = new Int32[checked((uint) local0 + local0)];
							local1.CopyTo(local3, 0);
							local1 = local3;
						}
						local0 = local0 + 1;
						local1[local0] = local2;
					}
					local2++;
				}
				local4 = new Int32[checked((uint) local0)];
				System.Array.Copy(local1, 0, local4, 0, local0);
				return local4;
			}
		}

		public int Size 
		{
			get
			{
				string local0;

				local0 = this.Attributes["size"];
				if (local0 == null)
					return -1;
				return System.Int32.Parse(local0, CultureInfo.InvariantCulture);
			}
			set
			{
				this.Attributes["size"]= System.Web.UI.HtmlControls.HtmlControl.MapIntegerAttributeToString(value);
			}
		}

		public string Value 
		{
			get
			{
				int local0;

				local0 = this.SelectedIndex;
				if (local0 >= 0 && local0 < this.Items.Count)
					return this.Items[local0].Value;
				return System.String.Empty;
			}
			set
			{
				int local0;

				local0 = this.Items.FindByValueInternal(value);
				if (local0 >= 0)
					this.SelectedIndex = local0;
			}
		}
	}
}