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| 1 | +using System; |
| 2 | +using System.Collections.Generic; |
| 3 | +using System.ComponentModel; |
| 4 | +using System.Diagnostics; |
| 5 | +using System.Globalization; |
| 6 | +using System.Linq; |
| 7 | +using System.Reflection; |
| 8 | +using System.Text; |
| 9 | +using System.Threading.Tasks; |
| 10 | + |
| 11 | +namespace CommEx.Serial.Common |
| 12 | +{ |
| 13 | + #region StringConverter |
| 14 | + |
| 15 | + /// <inheritdoc/> |
| 16 | + /// <summary> |
| 17 | + /// Enum の Value と String を変換するコンバータ |
| 18 | + /// String はそのまま Enum の Value として扱われる |
| 19 | + /// </summary> |
| 20 | + public class EnumToStringConverter : EnumConverter |
| 21 | + { |
| 22 | + public EnumToStringConverter(Type type) : base(type) |
| 23 | + { |
| 24 | + if (!type.IsEnum) |
| 25 | + { |
| 26 | + throw new ArgumentException("Type must be an Enum."); |
| 27 | + } |
| 28 | + } |
| 29 | + /// <summary> |
| 30 | + /// Enum の Value から String を取得 |
| 31 | + /// Enum.Value -> string |
| 32 | + /// </summary> |
| 33 | + /// <param name="value">Enum.value</param> |
| 34 | + /// <param name="destinationType">string</param> |
| 35 | + /// <returns>string</returns> |
| 36 | + public override object ConvertTo(ITypeDescriptorContext context, CultureInfo culture, object value, Type destinationType) |
| 37 | + { |
| 38 | + if (destinationType == typeof(string) && value != null) |
| 39 | + { |
| 40 | + return value.ToString(); |
| 41 | + } |
| 42 | + return base.ConvertTo(context, culture, value, destinationType); |
| 43 | + } |
| 44 | + |
| 45 | + /// <summary> |
| 46 | + /// String から Enum の Value を取得 |
| 47 | + /// string -> Enum.Value |
| 48 | + /// </summary> |
| 49 | + /// <param name="value">string</param> |
| 50 | + /// <returns>Enum.value</returns> |
| 51 | + public override object ConvertFrom(ITypeDescriptorContext context, CultureInfo culture, object value) |
| 52 | + { |
| 53 | + if (value is string stringValue) |
| 54 | + { |
| 55 | + return Enum.Parse(EnumType, stringValue); |
| 56 | + } |
| 57 | + return base.ConvertFrom(context, culture, value); |
| 58 | + } |
| 59 | + } |
| 60 | + |
| 61 | + #endregion |
| 62 | + |
| 63 | + #region DescriptionConverter |
| 64 | + |
| 65 | + /// <inheritdoc/> |
| 66 | + /// <summary> |
| 67 | + /// Enum の Value とその Description を変換するコンバータ |
| 68 | + /// </summary> |
| 69 | + public class EnumToDescriptionConverter : EnumConverter |
| 70 | + { |
| 71 | + public EnumToDescriptionConverter(Type type) : base(type) |
| 72 | + { |
| 73 | + if (!type.IsEnum) |
| 74 | + { |
| 75 | + throw new ArgumentException("Type must be an Enum."); |
| 76 | + } |
| 77 | + } |
| 78 | + |
| 79 | + /// <summary> |
| 80 | + /// Enum の Value から DescriptionAttribute を取得 |
| 81 | + /// Enum.Value -> string |
| 82 | + /// </summary> |
| 83 | + /// <param name="value">Enum.value</param> |
| 84 | + /// <param name="destinationType">string</param> |
| 85 | + /// <returns>string</returns> |
| 86 | + public override object ConvertTo(ITypeDescriptorContext context, CultureInfo culture, object value, Type destinationType) |
| 87 | + { |
| 88 | + if (destinationType == typeof(string) && value != null) |
| 89 | + { |
| 90 | + var fieldInfo = value.GetType().GetField(value.ToString()); |
| 91 | + var descriptionAttribute = fieldInfo?.GetCustomAttribute<DescriptionAttribute>(); |
| 92 | + if (descriptionAttribute != null) |
| 93 | + { |
| 94 | + return descriptionAttribute.Description; |
| 95 | + } |
| 96 | + } |
| 97 | + return base.ConvertTo(context, culture, value, destinationType); |
| 98 | + } |
| 99 | + |
| 100 | + /// <summary> |
| 101 | + /// Enum の DescriptionAttribute から Value を取得 |
| 102 | + /// string -> Enum.Value |
| 103 | + /// </summary> |
| 104 | + /// <param name="value">string</param> |
| 105 | + /// <returns>Enum.value</returns> |
| 106 | + public override object ConvertFrom(ITypeDescriptorContext context, CultureInfo culture, object value) |
| 107 | + { |
| 108 | + if (value is string stringValue) |
| 109 | + { |
| 110 | + foreach (var field in EnumType.GetFields(BindingFlags.Public | BindingFlags.Static)) |
| 111 | + { |
| 112 | + var descriptionAttribute = field.GetCustomAttribute<DescriptionAttribute>(); |
| 113 | + if (descriptionAttribute != null && descriptionAttribute.Description == stringValue) |
| 114 | + { |
| 115 | + return Enum.Parse(EnumType, field.Name); |
| 116 | + } |
| 117 | + } |
| 118 | + } |
| 119 | + return base.ConvertFrom(context, culture, value); |
| 120 | + } |
| 121 | + } |
| 122 | + |
| 123 | + #endregion |
| 124 | +} |
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