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

   1 //
   2 // System.Web.UI.CollectionBuilder.cs
   3 //
   4 // Authors:
   5 //      Gonzalo Paniagua Javier (gonzalo@ximian.com)
   6 //
   7 // (c) 2003 Ximian, Inc. (http://www.ximian.com)
   8 //
   9
  10 using System;
  11 using System.Collections;
  12 using System.Reflection;
  13
  14 namespace System.Web.UI
  15 {
  16         sealed class CollectionBuilder : ControlBuilder
  17         {
  18                 Type elementType;
  19
  20                 internal CollectionBuilder ()
  21                 {
  22                 }
  23
  24                 public override void AppendLiteralString (string s)
  25                 {
  26                         if (s != null && s.Trim () != "")
  27                                 throw new HttpException ("Literal content not allowed for " + ControlType);
  28                 }
  29
  30                 public override Type GetChildControlType (string tagName, IDictionary attribs)
  31                 {
  32                         Type t = Root.GetChildControlType (tagName, attribs);
  33                         if (elementType != null && !elementType.IsAssignableFrom (t))
  34                                 throw new HttpException ("Cannot add a " + t + " to " + elementType);
  35
  36                         return t;
  37                 }
  38
  39                 public override void Init (TemplateParser parser,
  40                                            ControlBuilder parentBuilder,
  41                                            Type type,
  42                                            string tagName,
  43                                            string id,
  44                                            IDictionary attribs)
  45                 {
  46                         base.Init (parser, parentBuilder, type, tagName, id, attribs);
  47
  48                         PropertyInfo prop = parentBuilder.ControlType.GetProperty (tagName, flagsNoCase);
  49                         SetControlType (prop.PropertyType);
  50
  51                         prop = ControlType.GetProperty ("Item", flagsNoCase & ~BindingFlags.IgnoreCase);
  52                         elementType = prop.PropertyType;
  53                 }
  54         }
  55 }
  56