#region License
/*
* Copyright 2002-2004 the original author or authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#endregion
using System;
using System.Globalization;
using System.Threading;
using System.Web;
using Spring.Util;
namespace Spring.Globalization.Resolvers{
/// <summary>
/// Culture resolver that uses request headers to determine culture. If no languages
/// are specified in the request headers, it returns default culture specifed, and
/// if no default culture was specifed it returns current culture for the executing
/// server thread.
/// </summary>
/// <remarks>
/// <b>Note:</b> This culture resolver cannot be used to change the culture
/// because request headers cannot be modified. In order to change the culture
/// when using this culture resolver user has to change language settings in
/// the web browser.
/// </remarks>
/// <author>Aleksandar Seovic</author>
public class RequestCultureResolver : DefaultWebCultureResolver
{
/// <summary>
/// Tries to determine culture from the request headers. If no languages
/// are specified in the request headers, it returns default culture specifed, and
/// if no default culture was specifed it returns current culture for the executing
/// server thread.
/// </summary>
/// <returns>Culture that should be used to render view.</returns>
public override CultureInfo ResolveCulture()
{
HttpContext context = HttpContext.Current;
CultureInfo culture = GetCulture(GetRequestLanguage());
if (culture != null)
{
return culture;
}
if (DefaultCulture != null)
{
return base.DefaultCulture;
}
return Thread.CurrentThread.CurrentUICulture;
}
/// <summary>
/// Not supported for this resolver implementation
/// </summary>
/// <param name="culture">The new culture or <code>null</code> to clear the culture.</param>
public override void SetCulture(CultureInfo culture)
{
throw new NotSupportedException("Cannot change HTTP request headers - use a different culture resolution strategy.");
}
}
}
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