2 // System.ComponentModel.TypeListConverter
5 // Martin Willemoes Hansen (mwh@sysrq.dk)
6 // Andreas Nahr (ClassDevelopment@A-SoftTech.com)
8 // (C) 2003 Martin Willemoes Hansen
9 // (C) 2003 Andreas Nahr
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:
21 // The above copyright notice and this permission notice shall be
22 // included in all copies or substantial portions of the Software.
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.
33 using System.Collections;
34 using System.Globalization;
36 namespace System.ComponentModel
38 public abstract class TypeListConverter : TypeConverter
42 protected TypeListConverter (Type[] types)
47 public override bool CanConvertFrom (ITypeDescriptorContext context, Type sourceType)
49 if (sourceType == typeof (string))
51 return base.CanConvertFrom (context, sourceType);
54 public override bool CanConvertTo (ITypeDescriptorContext context, Type destinationType)
56 if (destinationType == typeof (string))
58 return base.CanConvertTo (context, destinationType);
61 public override object ConvertFrom (ITypeDescriptorContext context, CultureInfo culture, object value)
63 // LAMESPEC also it delivers true for CanConvertFrom (string)
64 // it fails in the actual conversion (MS implementation)
65 return base.ConvertFrom (context, culture, value);
68 public override object ConvertTo (ITypeDescriptorContext context, CultureInfo culture,
69 object value, Type destinationType)
71 if (destinationType == typeof (string) && value != null && value.GetType() == typeof (Type)) {
72 return ((Type) value).ToString();
74 // LAMESPEC MS throws InvalidCastException here
75 throw new InvalidCastException("Cannot cast to System.Type");
78 public override StandardValuesCollection GetStandardValues (ITypeDescriptorContext context)
80 return new StandardValuesCollection (types);
83 public override bool GetStandardValuesExclusive (ITypeDescriptorContext context)
88 public override bool GetStandardValuesSupported (ITypeDescriptorContext context)