mcs/class/System.Windows.Forms/System.Windows.Forms/ColumnHeaderConverter.cs

   1 // Permission is hereby granted, free of charge, to any person obtaining\r
   2 // a copy of this software and associated documentation files (the\r
   3 // "Software"), to deal in the Software without restriction, including\r
   4 // without limitation the rights to use, copy, modify, merge, publish,\r
   5 // distribute, sublicense, and/or sell copies of the Software, and to\r
   6 // permit persons to whom the Software is furnished to do so, subject to\r
   7 // the following conditions:\r
   8 // \r
   9 // The above copyright notice and this permission notice shall be\r
  10 // included in all copies or substantial portions of the Software.\r
  11 // \r
  12 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,\r
  13 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF\r
  14 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND\r
  15 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE\r
  16 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION\r
  17 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION\r
  18 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.\r
  19 //\r
  20 // Copyright (c) 2007 Novell, Inc.\r
  21 //\r
  22 // Authors:\r
  23 //      olivier Dufour olivier.duff@free.fr\r
  24 //\r
  25 \r
  26 \r
  27 // COMPLETE\r
  28 \r
  29 using System.ComponentModel;\r
  30 using System.ComponentModel.Design.Serialization;\r
  31 using System.Collections;\r
  32 using System.Globalization;\r
  33 using System.Reflection;\r
  34 \r
  35 namespace System.Windows.Forms\r
  36 {\r
  37         public class ColumnHeaderConverter : ExpandableObjectConverter\r
  38         {\r
  39                 public ColumnHeaderConverter ()\r
  40                 {\r
  41                 }\r
  42 \r
  43                 public override Object ConvertTo (ITypeDescriptorContext context, CultureInfo culture, Object value, Type destinationType)\r
  44                 {\r
  45                         if (destinationType == typeof (InstanceDescriptor) && value is ColumnHeader)\r
  46                         {\r
  47                                 ConstructorInfo constructor_info;\r
  48                                 Type[] type;\r
  49                                 ColumnHeader column_header;\r
  50 \r
  51                                 column_header = (ColumnHeader)value;\r
  52                                 if (column_header.ImageIndex != -1)\r
  53                                 {\r
  54                                         type = new Type[] { typeof (int) };\r
  55                                         constructor_info = typeof (ColumnHeader).GetConstructor (type);\r
  56                                         if (constructor_info != null)\r
  57                                         {\r
  58                                                 object[] arguments = new object[] { column_header.ImageIndex };\r
  59                                                 return new InstanceDescriptor (constructor_info, (ICollection)arguments, false);\r
  60                                         }\r
  61                                 }\r
  62                                 else if (string.IsNullOrEmpty(column_header.ImageKey))\r
  63                                 {\r
  64                                         type = new Type[] { typeof (string) };\r
  65                                         constructor_info = typeof (ColumnHeader).GetConstructor (type);\r
  66                                         if (constructor_info != null)\r
  67                                         {\r
  68                                                 object[] arguments = new object[] { column_header.ImageKey };\r
  69                                                 return new InstanceDescriptor (constructor_info, (ICollection)arguments, false);\r
  70                                         }\r
  71                                 }\r
  72                                 else\r
  73                                 {\r
  74                                         type = Type.EmptyTypes;\r
  75                                         constructor_info = typeof (ColumnHeader).GetConstructor (type);\r
  76                                         if (constructor_info != null)\r
  77                                         {\r
  78                                                 object[] arguments = new object[0] {};\r
  79                                                 return new InstanceDescriptor (constructor_info, (ICollection)arguments, false);\r
  80                                         }\r
  81                                 }\r
  82 \r
  83                         }\r
  84                         return base.ConvertTo (context, culture, value, destinationType);\r
  85                 }\r
  86 \r
  87                 public override bool CanConvertTo (ITypeDescriptorContext context, Type destinationType)\r
  88                 {\r
  89                         if (destinationType == typeof (InstanceDescriptor))\r
  90                                 return true;\r
  91                         else\r
  92                                 return base.CanConvertTo (context, destinationType);\r
  93                 }\r
  94         }\r
  95 }\r