internal static bool HasRequiredAttribute(MemberInfo member)
{
return(MetadataHelper.GetAttribute <RequiredAttribute>(member) != null);
}
public static IEnumerable <EnumMemberInfo> GetEnumSource(Type enumType, bool useUnderlyingEnumValue = true, IValueConverter nameConverter = null,
bool splitNames = false, EnumMembersSortMode sortMode = EnumMembersSortMode.Default, Func <string, bool, string> getKnownImageUriCallback = null,
bool showImage = true, bool showName = true, Func <string, ImageSource> getSvgImageSource = null)
{
if (enumType == null || !enumType.IsEnum)
{
return(Enumerable.Empty <EnumMemberInfo>());
}
Func <string, ImageSource> getImageSource = uri => (ImageSource) new ImageSourceConverter().ConvertFrom(uri);
var result = enumType.GetFields(BindingFlags.Static | BindingFlags.Public)
.Where(field => DataAnnotationsAttributeHelper.GetAutoGenerateField(field))
.Select(field => {
Enum value = (Enum)field.GetValue(null);
string name = GetEnumName(field, value, nameConverter, splitNames);
var imageInfo = GetImageInfo(MetadataHelper.GetAttribute <ImageAttribute>(field), MetadataHelper.GetAttribute <DXImageAttribute>(field), null, getKnownImageUriCallback);
string imageUri = ViewModelBase.IsInDesignMode ? null : (imageInfo.Item1 ?? imageInfo.Item2);
Func <ImageSource> getImage = () => imageUri.With(CanCreateSvgImageSource(getSvgImageSource, imageUri) ? getSvgImageSource : getImageSource);
return(new EnumMemberInfo(name, DataAnnotationsAttributeHelper.GetFieldDescription(field), useUnderlyingEnumValue ? GetUnderlyingEnumValue(value) : value,
showImage, showName, getImage, DataAnnotationsAttributeHelper.GetFieldOrder(field)));
});
switch (sortMode)
{
case EnumMembersSortMode.DisplayName:
result = result.OrderBy(x => x.Name);
break;
case EnumMembersSortMode.DisplayNameDescending:
result = result.OrderByDescending(x => x.Name);
break;
case EnumMembersSortMode.DisplayNameLength:
result = result.OrderBy(x => x.Name.Length);
break;
case EnumMembersSortMode.DisplayNameLengthDescending:
result = result.OrderByDescending(x => x.Name.Length);
break;
}
return(result.OrderBy(x => (x.Order != null) ? x.Order : DefaultDisplayOrder).ToArray());
}
static DisplayAttribute GetFieldDisplayAttribute(FieldInfo field)
{
return(MetadataHelper.GetAttribute <DisplayAttribute>(field));
}