55 lines
1.6 KiB
Plaintext
55 lines
1.6 KiB
Plaintext
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using System;
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using System.Windows.Markup;
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namespace DTS.Common.Enums
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{
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public class EnumBindingSourceExtension : MarkupExtension
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{
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private Type _enumType;
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public Type EnumType
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{
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get => _enumType;
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set
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{
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if (value == _enumType) { return; }
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if (null != value)
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{
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var enumType = Nullable.GetUnderlyingType(value) ?? value;
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if (!enumType.IsEnum)
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{
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throw new ArgumentException("Type must be for an Enum.");
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}
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}
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_enumType = value;
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}
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}
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public EnumBindingSourceExtension() { }
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public EnumBindingSourceExtension(Type enumType)
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{
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EnumType = enumType;
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}
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public override object ProvideValue(IServiceProvider serviceProvider)
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{
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if (null == _enumType)
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{
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throw new InvalidOperationException("The EnumType must be specified.");
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}
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var actualEnumType = Nullable.GetUnderlyingType(_enumType) ?? _enumType;
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var enumValues = Enum.GetValues(actualEnumType);
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if (actualEnumType == _enumType)
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{
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return enumValues;
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}
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var tempArray = Array.CreateInstance(actualEnumType, enumValues.Length + 1);
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enumValues.CopyTo(tempArray, 1);
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return tempArray;
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}
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}
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}
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