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NzbDrone.Web/Ninject.Web.Mvc/NinjectActionInvoker.cs

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+#region License
+// 
+// Authors: Nate Kohari <nate@enkari.com>, Josh Close <narshe@gmail.com>
+// Copyright (c) 2007-2009, Enkari, Ltd.
+// 
+// Dual-licensed under the Apache License, Version 2.0, and the Microsoft Public License (Ms-PL).
+// See the file LICENSE.txt for details.
+// 
+#endregion
+#region Using Directives
+using System.Linq;
+using System.Web.Mvc;
+#endregion
+
+namespace Ninject.Web.Mvc
+{
+	/// <summary>
+	/// An <see cref="IActionInvoker"/> that injects filters with dependencies.
+	/// </summary>
+	public class NinjectActionInvoker : ControllerActionInvoker
+	{
+		/// <summary>
+		/// Gets or sets the kernel.
+		/// </summary>
+		public IKernel Kernel { get; private set; }
+
+		/// <summary>
+		/// Initializes a new instance of the <see cref="NinjectActionInvoker"/> class.
+		/// </summary>
+		/// <param name="kernel">The kernel.</param>
+		public NinjectActionInvoker(IKernel kernel)
+		{
+			Kernel = kernel;
+		}
+
+		/// <summary>
+		/// Gets the filters for the specified request and action.
+		/// </summary>
+		/// <param name="controllerContext">The controller context.</param>
+		/// <param name="actionDescriptor">The action descriptor.</param>
+		/// <returns>The filters.</returns>
+		protected override FilterInfo GetFilters(ControllerContext controllerContext, ActionDescriptor actionDescriptor)
+		{
+			FilterInfo filterInfo = base.GetFilters(controllerContext, actionDescriptor);
+
+			foreach (IActionFilter filter in filterInfo.ActionFilters.Where(f => f != null))
+				Kernel.Inject(filter);
+
+			foreach (IAuthorizationFilter filter in filterInfo.AuthorizationFilters.Where(f => f != null))
+				Kernel.Inject(filter);
+
+			foreach (IExceptionFilter filter in filterInfo.ExceptionFilters.Where(f => f != null))
+				Kernel.Inject(filter);
+
+			foreach (IResultFilter filter in filterInfo.ResultFilters.Where(f => f != null))
+				Kernel.Inject(filter);
+
+			return filterInfo;
+		}
+	}
+}