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.ComponentModel;\r
  16 using System.Web;\r
  17 using System.Web.UI;\r
  18 \r
  19 namespace System.Web.UI.WebControls\r
  20 {\r
  21         public class FontNamesConverter : TypeConverter\r
  22         {\r
  23                 public FontNamesConverter(): base()\r
  24                 {\r
  25                 }\r
  26                 \r
  27                  public override bool CanConvertFrom(ITypeDescriptorContext context, Type sourceType)\r
  28                  {\r
  29                         return (sourceType == typeof(string));\r
  30                  }\r
  31                  \r
  32                  public override object ConvertFrom(ITypeDescriptorContext context, CultureInfo culture, object value)\r
  33                  {\r
  34                         if(value is string)\r
  35                         {\r
  36                                 string fontNames = (string)value;\r
  37                                 if(fontNames.Length == 0)\r
  38                                 {\r
  39                                         return (new string[0]);\r
  40                                 }\r
  41                                 string[] names = fontNames.Split(new char[] { ','});\r
  42                                 foreach(string current in names)\r
  43                                 {\r
  44                                         current = current.Trim();\r
  45                                 }\r
  46                                 return names;\r
  47                         }\r
  48                         throw GetConvertFromException(value);\r
  49                  }\r
  50                  \r
  51                  public override object ConvertTo(ITypeDescriptorContext context, CultureInfo culture, object value, Type destinationType)\r
  52                  {\r
  53                         if(destinationType is typeof(string))\r
  54                         {\r
  55                                 if(value == null || ((string[])value) == null)\r
  56                                         return String.Empty;\r
  57                                 return String.Join(",", (string[])value);\r
  58                         }\r
  59                         throw GetConvertToException(value, destinationType);\r
  60                  }\r
  61         }\r
  62 }\r