mcs/class/System/System.ComponentModel/ReferenceConverter.cs

   1 //
   2 // System.ComponentModel.ReferenceConverter.cs
   3 //
   4 // Authors:
   5 //   Martin Willemoes Hansen (mwh@sysrq.dk)
   6 //   Andreas Nahr (ClassDevelopment@A-SoftTech.com)
   7 //
   8 // (C) 2003 Martin Willemoes Hansen
   9 // (C) 2003 Andreas Nahr
  10 //
  11
  12 //
  13 // Permission is hereby granted, free of charge, to any person obtaining
  14 // a copy of this software and associated documentation files (the
  15 // "Software"), to deal in the Software without restriction, including
  16 // without limitation the rights to use, copy, modify, merge, publish,
  17 // distribute, sublicense, and/or sell copies of the Software, and to
  18 // permit persons to whom the Software is furnished to do so, subject to
  19 // the following conditions:
  20 //
  21 // The above copyright notice and this permission notice shall be
  22 // included in all copies or substantial portions of the Software.
  23 //
  24 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  25 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  26 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  27 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  28 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  29 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  30 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  31 //
  32
  33 using System.Globalization;
  34
  35 namespace System.ComponentModel
  36 {
  37         public class ReferenceConverter : TypeConverter
  38         {
  39
  40                 public ReferenceConverter (Type type)
  41                 {
  42                 }
  43
  44                 public override bool CanConvertFrom (ITypeDescriptorContext context,
  45                                                      Type sourceType)
  46                 {
  47                         return false;
  48                 }
  49
  50                 public override object ConvertFrom (ITypeDescriptorContext context,
  51                                                     CultureInfo culture,
  52                                                     object value)
  53                 {
  54                         return base.ConvertFrom(context, culture, value);
  55                 }
  56
  57                 public override object ConvertTo (ITypeDescriptorContext context,
  58                                                   CultureInfo culture,
  59                                                   object value,
  60                                                   Type destinationType)
  61                 {
  62                         return base.ConvertTo(context, culture, value, destinationType);
  63                 }
  64
  65                 public override StandardValuesCollection GetStandardValues (ITypeDescriptorContext context)
  66                 {
  67                         return null;
  68                 }
  69
  70                 public override bool GetStandardValuesExclusive (ITypeDescriptorContext context)
  71                 {
  72                         return true;
  73                 }
  74
  75                 public override bool GetStandardValuesSupported (ITypeDescriptorContext context)
  76                 {
  77                         return true;
  78                 }
  79
  80                 protected virtual bool IsValueAllowed (ITypeDescriptorContext context, object value)
  81                 {
  82                         return true;
  83                 }
  84         }
  85 }