public static MvcHtmlString TranslateByCulture(this HtmlHelper helper, Expression <Func <object> > model, Type customAttribute, CultureInfo culture, params object[] formatArguments)
{
if (model == null)
{
throw new ArgumentNullException(nameof(model));
}
if (customAttribute == null)
{
throw new ArgumentNullException(nameof(customAttribute));
}
if (culture == null)
{
throw new ArgumentNullException(nameof(culture));
}
if (!typeof(Attribute).IsAssignableFrom(customAttribute))
{
throw new ArgumentException($"Given type `{customAttribute.FullName}` is not of type `System.Attribute`");
}
var resourceKey = ResourceKeyBuilder.BuildResourceKey(ExpressionHelper.GetFullMemberName(model), customAttribute);
return(new MvcHtmlString(LocalizationProvider.Current.GetStringByCulture(resourceKey, culture, formatArguments)));
}
/// <summary>
/// Creates new localization provider with all the required settings and services injected.
/// </summary>
/// <param name="keyBuilder">Key builder (with help of <paramref name="expressionHelper"/> this dependency will help to translate from lambda expression to resource key as string).</param>
/// <param name="expressionHelper">Can walk lambda expressions and return string representation of the expression.</param>
/// <param name="fallbackCollection">Collection of fallback language settings.</param>
/// <param name="queryExecutor">Small utility robot to help with queries.</param>
public LocalizationProvider(
ResourceKeyBuilder keyBuilder,
ExpressionHelper expressionHelper,
FallbackLanguagesCollection fallbackCollection,
IQueryExecutor queryExecutor)
{
_keyBuilder = keyBuilder;
_expressionHelper = expressionHelper;
_fallbackCollection = fallbackCollection;
_queryExecutor = queryExecutor;
}
/// <summary>
/// Translates the specified enum with some formatting arguments (if needed).
/// </summary>
/// <param name="target">The enum to translate.</param>
/// <param name="culture">The culture.</param>
/// <param name="formatArguments">The format arguments.</param>
/// <returns>Translated enum values</returns>
/// <exception cref="ArgumentNullException">
/// target
/// or
/// culture
/// </exception>
public static string TranslateByCulture(this Enum target, CultureInfo culture, params object[] formatArguments)
{
if (target == null)
{
throw new ArgumentNullException(nameof(target));
}
if (culture == null)
{
throw new ArgumentNullException(nameof(culture));
}
var resourceKey = ResourceKeyBuilder.BuildResourceKey(target.GetType(), target.ToString());
return(LocalizationProvider.Current.GetStringByCulture(resourceKey, culture, formatArguments));
}
public static MvcHtmlString TranslateForByCulture <TModel, TValue>(this HtmlHelper <TModel> html,
Expression <Func <TModel, TValue> > expression,
Type customAttribute,
CultureInfo culture,
params object[] formatArguments)
{
if (customAttribute == null)
{
throw new ArgumentNullException(nameof(customAttribute));
}
if (culture == null)
{
throw new ArgumentNullException(nameof(culture));
}
if (!typeof(Attribute).IsAssignableFrom(customAttribute))
{
throw new ArgumentException($"Given type `{customAttribute.FullName}` is not of type `System.Attribute`");
}
var metadata = ModelMetadata.FromLambdaExpression(expression, html.ViewData);
var pi = metadata.ContainerType.GetProperty(metadata.PropertyName);
if (pi != null)
{
if (pi.GetCustomAttribute(customAttribute) == null)
{
return(MvcHtmlString.Empty);
}
}
return(new MvcHtmlString(LocalizationProvider.Current.GetStringByCulture(ResourceKeyBuilder.BuildResourceKey(metadata.ContainerType,
metadata.PropertyName,
customAttribute),
culture,
formatArguments)));
}
internal static string GetFullMemberName(Expression <Func <object> > memberSelector)
{
var memberStack = WalkExpression(memberSelector);
return(ResourceKeyBuilder.BuildResourceKey(memberStack.Pop(), memberStack));
}