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 // Copyright (C) 2005 Novell, Inc (http://www.novell.com)
  10 //
  11 // Permission is hereby granted, free of charge, to any person obtaining
  12 // a copy of this software and associated documentation files (the
  13 // "Software"), to deal in the Software without restriction, including
  14 // without limitation the rights to use, copy, modify, merge, publish,
  15 // distribute, sublicense, and/or sell copies of the Software, and to
  16 // permit persons to whom the Software is furnished to do so, subject to
  17 // the following conditions:
  18 //
  19 // The above copyright notice and this permission notice shall be
  20 // included in all copies or substantial portions of the Software.
  21 //
  22 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  23 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  24 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  25 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  26 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  27 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  28 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  29 //
  30
  31 using System.ComponentModel;
  32 using System.Security.Permissions;
  33 using System.Text;
  34
  35 namespace System.Web.UI {
  36
  37         // CAS - no InheritanceDemand here as the class is sealed
  38         [AspNetHostingPermission (SecurityAction.LinkDemand, Level = AspNetHostingPermissionLevel.Minimal)]
  39         // attributes
  40         [ToolboxItem(false)]
  41         public sealed class DataBoundLiteralControl : Control
  42 #if NET_2_0
  43         , ITextControl
  44 #endif
  45         {
  46                 private string [] staticLiterals;
  47                 private string [] dataBoundLiterals;
  48
  49                 public DataBoundLiteralControl (int staticLiteralsCount,
  50                                                 int dataBoundLiteralCount)
  51                 {
  52                         staticLiterals = new string [staticLiteralsCount];
  53                         dataBoundLiterals = new string [dataBoundLiteralCount];
  54                         AutoID = false;
  55                 }
  56
  57                 public string Text {
  58                         get {
  59                                 StringBuilder text = new StringBuilder ();
  60                                 int stLength = staticLiterals.Length;
  61                                 int dbLength = dataBoundLiterals.Length;
  62                                 int max = (stLength > dbLength) ? stLength : dbLength;
  63                                 for (int i = 0; i < max; i++){
  64                                         if (i < stLength)
  65                                                 text.Append (staticLiterals [i]);
  66                                         if (i < dbLength)
  67                                                 text.Append (dataBoundLiterals [i]);
  68                                 }
  69
  70                                 return text.ToString ();
  71                         }
  72                 }
  73
  74                 protected override ControlCollection CreateControlCollection ()
  75                 {
  76                         return new EmptyControlCollection (this);
  77                 }
  78
  79                 protected override void LoadViewState (object savedState)
  80                 {
  81                         if (savedState != null) {
  82                                 Array source = (Array) savedState;
  83                                 if (source.Length == dataBoundLiterals.Length)
  84                                         source.CopyTo (dataBoundLiterals, 0);
  85                         }
  86                 }
  87
  88 #if NET_2_0
  89                 protected internal
  90 #else
  91                 protected
  92 #endif
  93                 override void Render (HtmlTextWriter output)
  94                 {
  95                         output.Write (Text);
  96                 }
  97
  98                 protected override object SaveViewState ()
  99                 {
 100                         if (dataBoundLiterals.Length == 0)
 101                                 return null;
 102                         return dataBoundLiterals;
 103                 }
 104
 105                 public void SetDataBoundString (int index, string s)
 106                 {
 107                         dataBoundLiterals [index] = s;
 108                 }
 109
 110                 public void SetStaticString (int index, string s)
 111                 {
 112                         staticLiterals [index] = s;
 113                 }
 114
 115 #if NET_2_0
 116                 string ITextControl.Text {
 117                         get {
 118                                 return Text;
 119                         }
 120                         set {
 121                                 throw new NotSupportedException ();
 122                         }
 123                 }
 124 #endif
 125         }
 126 }
 127