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 //
  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;
  32 using System.Collections;
  33 using System.Reflection;
  34
  35 namespace System.Web.UI
  36 {
  37         sealed class CollectionBuilder : ControlBuilder
  38         {
  39                 Type elementType;
  40
  41                 internal CollectionBuilder ()
  42                 {
  43                 }
  44
  45                 public override void AppendLiteralString (string s)
  46                 {
  47                         if (s != null && s.Trim () != "")
  48                                 throw new HttpException ("Literal content not allowed for " + ControlType);
  49                 }
  50
  51                 public override Type GetChildControlType (string tagName, IDictionary attribs)
  52                 {
  53                         Type t = Root.GetChildControlType (tagName, attribs);
  54                         if (elementType != null && !elementType.IsAssignableFrom (t))
  55                                 throw new HttpException ("Cannot add a " + t + " to " + elementType);
  56
  57                         return t;
  58                 }
  59
  60                 public override void Init (TemplateParser parser,
  61                                            ControlBuilder parentBuilder,
  62                                            Type type,
  63                                            string tagName,
  64                                            string id,
  65                                            IDictionary attribs)
  66                 {
  67                         base.Init (parser, parentBuilder, type, tagName, id, attribs);
  68
  69                         PropertyInfo prop = parentBuilder.ControlType.GetProperty (tagName, flagsNoCase);
  70                         SetControlType (prop.PropertyType);
  71
  72                         prop = ControlType.GetProperty ("Item", flagsNoCase & ~BindingFlags.IgnoreCase);
  73                         elementType = prop.PropertyType;
  74                 }
  75         }
  76 }
  77