mcs/class/System.Web/System.Web.UI/DataBoundLiteralControl.cs

   1 //
   2 // System.Web.UI.DataBoundLiteralCOntrol.cs
   3 //
   4 // Authors:
   5 //      Duncan Mak  (duncan@ximian.com)
   6 //      Gonzalo Paniagua Javier (gonzalo@ximian.com)
   7 //
   8 // (C) 2002 Ximian, Inc. (http://www.ximian.com)
   9 //
  10
  11 using System;
  12 using System.ComponentModel;
  13 using System.Text;
  14
  15 namespace System.Web.UI {
  16
  17         [ToolboxItem(false)]
  18         public sealed class DataBoundLiteralControl : Control
  19         {
  20                 private string [] staticLiterals;
  21                 private string [] dataBoundLiterals;
  22
  23                 public DataBoundLiteralControl (int staticLiteralsCount,
  24                                                 int dataBoundLiteralCount)
  25                 {
  26                         staticLiterals = new string [staticLiteralsCount];
  27                         dataBoundLiterals = new string [dataBoundLiteralCount];
  28                         PreventAutoID ();
  29                 }
  30
  31                 public string Text {
  32                         get {
  33                                 StringBuilder text = new StringBuilder ();
  34                                 int stLength = staticLiterals.Length;
  35                                 int dbLength = dataBoundLiterals.Length;
  36                                 int max = (stLength > dbLength) ? stLength : dbLength;
  37                                 for (int i = 0; i < max; i++){
  38                                         if (i < stLength)
  39                                                 text.Append (staticLiterals [i]);
  40                                         if (i < dbLength)
  41                                                 text.Append (dataBoundLiterals [i]);
  42                                 }
  43
  44                                 return text.ToString ();
  45                         }
  46                 }
  47
  48                 protected override ControlCollection CreateControlCollection ()
  49                 {
  50                         return new EmptyControlCollection (this);
  51                 }
  52
  53                 protected override void LoadViewState (object savedState)
  54                 {
  55                         if (savedState != null) {
  56                                 Array source = (Array) savedState;
  57                                 if (source.Length == dataBoundLiterals.Length)
  58                                         source.CopyTo (dataBoundLiterals, 0);
  59                         }
  60                 }
  61
  62                 protected override void Render (HtmlTextWriter output)
  63                 {
  64                         output.Write (Text);
  65                 }
  66
  67                 protected override object SaveViewState ()
  68                 {
  69                         if (dataBoundLiterals.Length == 0)
  70                                 return null;
  71                         return dataBoundLiterals;
  72                 }
  73
  74                 public void SetDataBoundString (int index, string s)
  75                 {
  76                         dataBoundLiterals [index] = s;
  77                 }
  78
  79                 public void SetStaticString (int index, string s)
  80                 {
  81                         staticLiterals [index] = s;
  82                 }
  83         }
  84 }
  85