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

   1
   2 //
   3 // Permission is hereby granted, free of charge, to any person obtaining
   4 // a copy of this software and associated documentation files (the
   5 // "Software"), to deal in the Software without restriction, including
   6 // without limitation the rights to use, copy, modify, merge, publish,
   7 // distribute, sublicense, and/or sell copies of the Software, and to
   8 // permit persons to whom the Software is furnished to do so, subject to
   9 // the following conditions:
  10 //
  11 // The above copyright notice and this permission notice shall be
  12 // included in all copies or substantial portions of the Software.
  13 //
  14 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  15 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  16 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  17 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  18 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  19 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  20 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  21 //
  22 /**
  23  * Namespace: System.Web.UI.WebControls
  24  * Class:     FontNamesConverter
  25  *
  26  * Author:  Gaurav Vaish
  27  * Maintainer: gvaish@iitk.ac.in
  28  * Contact: <my_scripts2001@yahoo.com>, <gvaish@iitk.ac.in>
  29  * Implementation: yes
  30  * Status:  100%
  31  *
  32  * (C) Gaurav Vaish (2002)
  33  */
  34
  35 using System;
  36 using System.Globalization;
  37 using System.ComponentModel;
  38 using System.Web;
  39 using System.Web.UI;
  40
  41 namespace System.Web.UI.WebControls
  42 {
  43         public class FontNamesConverter : TypeConverter
  44         {
  45                 public FontNamesConverter(): base()
  46                 {
  47                 }
  48
  49                 public override bool CanConvertFrom(ITypeDescriptorContext context, Type sourceType)
  50                 {
  51                         return (sourceType == typeof(string));
  52                 }
  53
  54                 public override object ConvertFrom(ITypeDescriptorContext context, CultureInfo culture, object value)
  55                 {
  56                         if(value is string)
  57                         {
  58                                 string fontNames = (string)value;
  59                                 if(fontNames.Length == 0)
  60                                 {
  61                                         return (new string[0]);
  62                                 }
  63                                 string[] names = fontNames.Split(new char[] { ','});
  64                                 for(int i=0; i < names.Length; i++)
  65                                 {
  66                                         names[i] = names[i].Trim();
  67                                 }
  68                                 return names;
  69                         }
  70                         throw GetConvertFromException(value);
  71                 }
  72
  73                 public override object ConvertTo(ITypeDescriptorContext context, CultureInfo culture, object value, Type destinationType)
  74                 {
  75                         if(destinationType == typeof(string))
  76                         {
  77                                 if(value == null || ((string[])value) == null)
  78                                         return String.Empty;
  79                                 return String.Join(",", (string[])value);
  80                         }
  81                         throw GetConvertToException(value, destinationType);
  82                 }
  83         }
  84 }