mcs/class/System.Web.Mvc2/System.Web.Mvc/WebFormViewEngine.cs

   1 /* ****************************************************************************\r
   2  *\r
   3  * Copyright (c) Microsoft Corporation. All rights reserved.\r
   4  *\r
   5  * This software is subject to the Microsoft Public License (Ms-PL). \r
   6  * A copy of the license can be found in the license.htm file included \r
   7  * in this distribution.\r
   8  *\r
   9  * You must not remove this notice, or any other, from this software.\r
  10  *\r
  11  * ***************************************************************************/\r
  12 \r
  13 namespace System.Web.Mvc {\r
  14     using System.Diagnostics.CodeAnalysis;\r
  15     using System.Net;\r
  16     using System.Web;\r
  17 \r
  18     public class WebFormViewEngine : VirtualPathProviderViewEngine {\r
  19 \r
  20         private IBuildManager _buildManager;\r
  21 \r
  22         public WebFormViewEngine() {\r
  23             MasterLocationFormats = new[] {\r
  24                 "~/Views/{1}/{0}.master",\r
  25                 "~/Views/Shared/{0}.master"\r
  26             };\r
  27 \r
  28             AreaMasterLocationFormats = new[] {\r
  29                 "~/Areas/{2}/Views/{1}/{0}.master",\r
  30                 "~/Areas/{2}/Views/Shared/{0}.master",\r
  31             };\r
  32 \r
  33             ViewLocationFormats = new[] {\r
  34                 "~/Views/{1}/{0}.aspx",\r
  35                 "~/Views/{1}/{0}.ascx",\r
  36                 "~/Views/Shared/{0}.aspx",\r
  37                 "~/Views/Shared/{0}.ascx"\r
  38             };\r
  39 \r
  40             AreaViewLocationFormats = new[] {\r
  41                 "~/Areas/{2}/Views/{1}/{0}.aspx",\r
  42                 "~/Areas/{2}/Views/{1}/{0}.ascx",\r
  43                 "~/Areas/{2}/Views/Shared/{0}.aspx",\r
  44                 "~/Areas/{2}/Views/Shared/{0}.ascx",\r
  45             };\r
  46 \r
  47             PartialViewLocationFormats = ViewLocationFormats;\r
  48             AreaPartialViewLocationFormats = AreaViewLocationFormats;\r
  49         }\r
  50 \r
  51         internal IBuildManager BuildManager {\r
  52             get {\r
  53                 if (_buildManager == null) {\r
  54                     _buildManager = new BuildManagerWrapper();\r
  55                 }\r
  56                 return _buildManager;\r
  57             }\r
  58             set {\r
  59                 _buildManager = value;\r
  60             }\r
  61         }\r
  62 \r
  63         protected override IView CreatePartialView(ControllerContext controllerContext, string partialPath) {\r
  64             return new WebFormView(partialPath, null);\r
  65         }\r
  66 \r
  67         protected override IView CreateView(ControllerContext controllerContext, string viewPath, string masterPath) {\r
  68             return new WebFormView(viewPath, masterPath);\r
  69         }\r
  70 \r
  71         [SuppressMessage("Microsoft.Design", "CA1031:DoNotCatchGeneralExceptionTypes",\r
  72             Justification = "Exceptions are interpreted as indicating that the file does not exist.")]\r
  73         protected override bool FileExists(ControllerContext controllerContext, string virtualPath) {\r
  74             try {\r
  75                 object viewInstance = BuildManager.CreateInstanceFromVirtualPath(virtualPath, typeof(object));\r
  76                 return viewInstance != null;\r
  77             }\r
  78             catch (HttpException he) {\r
  79                 if (he is HttpParseException) {\r
  80                     // The build manager found something, but instantiation failed due to a runtime lookup failure\r
  81                     throw;\r
  82                 }\r
  83 \r
  84                 if (he.GetHttpCode() == (int)HttpStatusCode.NotFound) {\r
  85                     // If BuildManager returns a 404 (Not Found) that means that a file did not exist.\r
  86                     // If the view itself doesn't exist, then this method should report that rather than throw an exception.\r
  87                     if (!base.FileExists(controllerContext, virtualPath)) {\r
  88                         return false;\r
  89                     }\r
  90                 }\r
  91 \r
  92                 // All other error codes imply other errors such as compilation or parsing errors\r
  93                 throw;\r
  94             }\r
  95         }\r
  96 \r
  97     }\r
  98 }\r