aspnetcore/src/Microsoft.AspNet.Localization/RequestLocalizationOptions.cs

107 lines
5.0 KiB
C#

// Copyright (c) .NET Foundation. All rights reserved.
// Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.
using System;
using System.Collections.Generic;
using System.Globalization;
namespace Microsoft.AspNet.Localization
{
/// <summary>
/// Specifies options for the <see cref="RequestLocalizationMiddleware"/>.
/// </summary>
public class RequestLocalizationOptions
{
private RequestCulture _defaultRequestCulture =
new RequestCulture(CultureInfo.CurrentCulture, CultureInfo.CurrentUICulture);
/// <summary>
/// Creates a new <see cref="RequestLocalizationOptions"/> with default values.
/// </summary>
public RequestLocalizationOptions()
{
RequestCultureProviders = new List<IRequestCultureProvider>
{
new QueryStringRequestCultureProvider { Options = this },
new CookieRequestCultureProvider { Options = this },
new AcceptLanguageHeaderRequestCultureProvider { Options = this }
};
}
/// <summary>
/// Gets or sets the default culture to use for requests when a supported culture could not be determined by
/// one of the configured <see cref="IRequestCultureProvider"/>s.
/// Defaults to <see cref="CultureInfo.CurrentCulture"/> and <see cref="CultureInfo.CurrentUICulture"/>.
/// </summary>
public RequestCulture DefaultRequestCulture
{
get
{
return _defaultRequestCulture;
}
set
{
if (value == null)
{
throw new ArgumentNullException(nameof(value));
}
_defaultRequestCulture = value;
}
}
/// <summary>
/// Gets or sets a value indicating whether to set a request culture to an ancestor culture in the case the
/// culture determined by the configured <see cref="IRequestCultureProvider"/>s is not in the
/// <see cref="SupportedCultures"/> list but an ancestor culture is.
/// Defaults to <c>true</c>;
/// </summary>
/// <example>
/// If this property is <c>true</c> and the application is configured to support the culture "fr", but not the
/// culture "fr-FR", and a configured <see cref="IRequestCultureProvider"/> determines a request's culture is
/// "fr-FR", then the request's culture will be set to the culture "fr", as it is an ancestor of "fr-FR".
/// </example>
public bool FallBackToParentCultures { get; set; } = true;
/// <summary>
/// Gets or sets a value indicating whether to set a request UI culture to an ancestor culture in the case the
/// UI culture determined by the configured <see cref="IRequestCultureProvider"/>s is not in the
/// <see cref="SupportedUICultures"/> list but an ancestor culture is.
/// Defaults to <c>true</c>;
/// </summary>
/// <example>
/// If this property is <c>true</c> and the application is configured to support the UI culture "fr", but not
/// the UI culture "fr-FR", and a configured <see cref="IRequestCultureProvider"/> determines a request's UI
/// culture is "fr-FR", then the request's UI culture will be set to the culture "fr", as it is an ancestor of
/// "fr-FR".
/// </example>
public bool FallBackToParentUICultures { get; set; } = true;
/// <summary>
/// The cultures supported by the application. The <see cref="RequestLocalizationMiddleware"/> will only set
/// the current request culture to an entry in this list.
/// Defaults to <see cref="CultureInfo.CurrentCulture"/>.
/// </summary>
public IList<CultureInfo> SupportedCultures { get; set; } = new List<CultureInfo> { CultureInfo.CurrentCulture };
/// <summary>
/// The UI cultures supported by the application. The <see cref="RequestLocalizationMiddleware"/> will only set
/// the current request culture to an entry in this list.
/// Defaults to <see cref="CultureInfo.CurrentUICulture"/>.
/// </summary>
public IList<CultureInfo> SupportedUICultures { get; set; } = new List<CultureInfo> { CultureInfo.CurrentUICulture };
/// <summary>
/// An ordered list of providers used to determine a request's culture information. The first provider that
/// returns a non-<c>null</c> result for a given request will be used.
/// Defaults to the following:
/// <list type="number">
/// <item><description><see cref="QueryStringRequestCultureProvider"/></description></item>
/// <item><description><see cref="CookieRequestCultureProvider"/></description></item>
/// <item><description><see cref="AcceptLanguageHeaderRequestCultureProvider"/></description></item>
/// </list>
/// </summary>
public IList<IRequestCultureProvider> RequestCultureProviders { get; set; }
}
}