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:
11 // The above copyright notice and this permission notice shall be
12 // included in all copies or substantial portions of the Software.
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.
23 * Namespace: System.Web.UI.WebControls
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24 * Class: FontUnitConverter
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26 * Author: Gaurav Vaish, Gonzalo Paniagua Javier
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27 * Maintainer: gvaish@iitk.ac.in
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28 * Contact: <my_scripts2001@yahoo.com>, <gvaish@iitk.ac.in>, <gonzalo@ximian.com>
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29 * Implementation: yes
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32 * (C) Gaurav Vaish (2002)
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33 * (c) 2002 Ximian, Inc. (http://www.ximian.com)
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37 using System.Globalization;
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38 using System.ComponentModel;
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40 using System.Web.UI;
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41 using System.Reflection;
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42 using System.ComponentModel.Design.Serialization;
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44 namespace System.Web.UI.WebControls
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46 public class FontUnitConverter : TypeConverter
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48 static volatile StandardValuesCollection valuesCollection;
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49 static readonly object lockobj = new object ();
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51 public override bool CanConvertFrom(ITypeDescriptorContext context, Type sourceType)
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53 if(sourceType == typeof(string))
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55 return base.CanConvertFrom(context, sourceType);
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59 public override bool CanConvertTo (ITypeDescriptorContext context, Type destinationType)
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61 if (destinationType == typeof (string))
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64 if (destinationType == typeof (InstanceDescriptor))
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67 return base.CanConvertTo (context, destinationType);
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71 public override object ConvertFrom(ITypeDescriptorContext context, CultureInfo culture, object value)
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77 string val = ((string)value).Trim();
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80 return FontUnit.Empty;
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82 return FontUnit.Parse(val, CultureInfo.InvariantCulture);
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84 return base.ConvertFrom(context, culture, value);
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87 public override object ConvertTo(ITypeDescriptorContext context, CultureInfo culture, object value, Type destinationType)
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89 if(destinationType == typeof (string) && value is FontUnit)
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91 FontUnit val = (FontUnit)value;
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92 if(val.Type == FontSize.NotSet)
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94 return String.Empty;
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96 return val.ToString (culture);
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99 if (destinationType == typeof (InstanceDescriptor)) {
101 value = FontUnit.Parse ((string)value, CultureInfo.InvariantCulture);
103 if (value is FontUnit) {
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104 FontUnit s = (FontUnit) value;
105 if (s.Type == FontSize.AsUnit) {
106 ConstructorInfo ci = typeof(FontUnit).GetConstructor (new Type[] { typeof (Unit) });
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107 return new InstanceDescriptor (ci, new object[] {s.Unit});
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109 ConstructorInfo ci = typeof(FontUnit).GetConstructor (new Type[] { typeof (FontSize) });
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110 return new InstanceDescriptor (ci, new object[] {s.Type});
115 return base.ConvertTo(context, culture, value, destinationType);
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118 public override StandardValuesCollection GetStandardValues(ITypeDescriptorContext context)
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120 if (valuesCollection != null)
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121 return valuesCollection;
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124 if (valuesCollection != null)
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125 return valuesCollection;
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127 Array values = Enum.GetValues (typeof (FontUnit));
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128 Array.Sort (values);
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129 valuesCollection = new StandardValuesCollection (values);
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132 return valuesCollection;
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135 public override bool GetStandardValuesExclusive(ITypeDescriptorContext context)
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140 public override bool GetStandardValuesSupported(ITypeDescriptorContext context)
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