mcs/class/System.Web/System.Web.UI.WebControls/FontNamesConverter.cs

   1 /**\r
   2  * Namespace: System.Web.UI.WebControls\r
   3  * Class:     FontNamesConverter\r
   4  *\r
   5  * Author:  Gaurav Vaish\r
   6  * Maintainer: gvaish@iitk.ac.in\r
   7  * Contact: <my_scripts2001@yahoo.com>, <gvaish@iitk.ac.in>\r
   8  * Implementation: yes\r
   9  * Status:  100%\r
  10  *\r
  11  * (C) Gaurav Vaish (2002)\r
  12  */\r
  13 \r
  14 using System;\r
  15 using System.Globalization;\r
  16 using System.ComponentModel;\r
  17 using System.Web;\r
  18 using System.Web.UI;\r
  19 \r
  20 namespace System.Web.UI.WebControls\r
  21 {\r
  22         public class FontNamesConverter : TypeConverter\r
  23         {\r
  24                 public FontNamesConverter(): base()\r
  25                 {\r
  26                 }\r
  27 \r
  28                 public override bool CanConvertFrom(ITypeDescriptorContext context, Type sourceType)\r
  29                 {\r
  30                         return (sourceType == typeof(string));\r
  31                 }\r
  32 \r
  33                 public override object ConvertFrom(ITypeDescriptorContext context, CultureInfo culture, object value)\r
  34                 {\r
  35                         if(value is string)\r
  36                         {\r
  37                                 string fontNames = (string)value;\r
  38                                 if(fontNames.Length == 0)\r
  39                                 {\r
  40                                         return (new string[0]);\r
  41                                 }\r
  42                                 string[] names = fontNames.Split(new char[] { ','});\r
  43                                 for(int i=0; i < names.Length; i++)\r
  44                                 {\r
  45                                         names[i] = names[i].Trim();\r
  46                                 }\r
  47                                 return names;\r
  48                         }\r
  49                         throw GetConvertFromException(value);\r
  50                 }\r
  51 \r
  52                 public override object ConvertTo(ITypeDescriptorContext context, CultureInfo culture, object value, Type destinationType)\r
  53                 {\r
  54                         if(destinationType == typeof(string))\r
  55                         {\r
  56                                 if(value == null || ((string[])value) == null)\r
  57                                         return String.Empty;\r
  58                                 return String.Join(",", (string[])value);\r
  59                         }\r
  60                         throw GetConvertToException(value, destinationType);\r
  61                 }\r
  62         }\r
  63 }\r