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using System;
using System.ComponentModel;
using System.Xaml;
namespace System.Windows
{
public class TemplateContentLoader : XamlDeferringLoader
{
public override object Load(XamlReader xamlReader, IServiceProvider serviceProvider)
{
if (serviceProvider == null)
{
throw new ArgumentNullException("serviceProvider");
}
else if (xamlReader == null)
{
throw new ArgumentNullException("xamlReader");
}
IXamlObjectWriterFactory factory = RequireService<IXamlObjectWriterFactory>(serviceProvider);
return new TemplateContent(xamlReader, factory, serviceProvider);
}
private static T RequireService<T>(IServiceProvider provider) where T : class
{
T result = provider.GetService(typeof(T)) as T;
if (result == null)
{
throw new InvalidOperationException(SR.Get(SRID.DeferringLoaderNoContext,typeof(TemplateContentLoader).Name, typeof(T).Name));
}
return result;
}
public override XamlReader Save(object value, IServiceProvider serviceProvider)
{
throw new NotSupportedException(SR.Get(SRID.DeferringLoaderNoSave, typeof(TemplateContentLoader).Name));
}
}
}
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