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) 2005-2010 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, ITextControl
  42         {
  43                 int staticLiteralsCount;
  44                 string [] staticLiterals;
  45                 string [] dataBoundLiterals;
  46
  47                 public DataBoundLiteralControl (int staticLiteralsCount,
  48                                                 int dataBoundLiteralCount)
  49                 {
  50                         this.staticLiteralsCount = staticLiteralsCount;
  51                         dataBoundLiterals = new string [dataBoundLiteralCount];
  52                         AutoID = false;
  53                 }
  54
  55                 public string Text {
  56                         get {
  57                                 StringBuilder text = new StringBuilder ();
  58                                 int stLength = staticLiterals == null ? 0 : staticLiterals.Length;
  59                                 int dbLength = dataBoundLiterals.Length;
  60                                 int max = (stLength > dbLength) ? stLength : dbLength;
  61                                 for (int i = 0; i < max; i++){
  62                                         if (i < stLength)
  63                                                 text.Append (staticLiterals [i]);
  64                                         if (i < dbLength)
  65                                                 text.Append (dataBoundLiterals [i]);
  66                                 }
  67
  68                                 return text.ToString ();
  69                         }
  70                 }
  71
  72                 protected override ControlCollection CreateControlCollection ()
  73                 {
  74                         return new EmptyControlCollection (this);
  75                 }
  76
  77                 protected override void LoadViewState (object savedState)
  78                 {
  79                         if (savedState != null) {
  80                                 Array source = (Array) savedState;
  81                                 if (source.Length == dataBoundLiterals.Length)
  82                                         source.CopyTo (dataBoundLiterals, 0);
  83                         }
  84                 }
  85
  86                 protected internal override void Render (HtmlTextWriter output)
  87                 {
  88                         int stLength = staticLiterals == null ? 0 : staticLiterals.Length;
  89                         int dbLength = dataBoundLiterals.Length;
  90                         int max = (stLength > dbLength) ? stLength : dbLength;
  91
  92                         for (int i = 0; i < max; i++){
  93                                 if (i < stLength)
  94                                         output.Write (staticLiterals [i]);
  95                                 if (i < dbLength)
  96                                         output.Write (dataBoundLiterals [i]);
  97                         }
  98                 }
  99
 100                 protected override object SaveViewState ()
 101                 {
 102                         if (dataBoundLiterals.Length == 0)
 103                                 return null;
 104                         return dataBoundLiterals;
 105                 }
 106
 107                 public void SetDataBoundString (int index, string s)
 108                 {
 109                         dataBoundLiterals [index] = s;
 110                 }
 111
 112                 public void SetStaticString (int index, string s)
 113                 {
 114                         if (staticLiterals == null)
 115                                 staticLiterals = new string [staticLiteralsCount];
 116                         staticLiterals [index] = s;
 117                 }
 118
 119                 string ITextControl.Text {
 120                         get {
 121                                 return Text;
 122                         }
 123                         set {
 124                                 throw new NotSupportedException ();
 125                         }
 126                 }
 127         }
 128 }
 129