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using System;
using System.Windows.Markup;
namespace Gestor.Common.Helpers
{
public class EnumBindingSourceExtension : MarkupExtension
{
private Type _enumType;
public Type EnumType
{
get
{
return this._enumType;
}
set
{
if (value == this._enumType)
{
return;
}
if (null != value)
{
if (!(Nullable.GetUnderlyingType(value) ?? value).IsEnum)
{
throw new ArgumentException("Type must be for an Enum.");
}
}
this._enumType = value;
}
}
public EnumBindingSourceExtension()
{
}
public EnumBindingSourceExtension(Type enumType)
{
this.EnumType = enumType;
}
public override object ProvideValue(IServiceProvider serviceProvider)
{
if (null == this._enumType)
{
throw new InvalidOperationException("The EnumType must be specified.");
}
Type underlyingType = Nullable.GetUnderlyingType(this._enumType) ?? this._enumType;
Array values = Enum.GetValues(underlyingType);
if (underlyingType == this._enumType)
{
return values;
}
Array arrays = Array.CreateInstance(underlyingType, values.Length + 1);
values.CopyTo(arrays, 1);
return arrays;
}
}
}
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