class/System.Web.Mvc/System.Web.Mvc/WebFormView.cs

   1 /* ****************************************************************************
   2  *
   3  * Copyright (c) Microsoft Corporation. All rights reserved.
   4  *
   5  * This software is subject to the Microsoft Public License (Ms-PL).
   6  * A copy of the license can be found in the license.htm file included
   7  * in this distribution.
   8  *
   9  * You must not remove this notice, or any other, from this software.
  10  *
  11  * ***************************************************************************/
  12
  13 namespace System.Web.Mvc {
  14     using System;
  15     using System.Globalization;
  16     using System.IO;
  17     using System.Web.Mvc.Resources;
  18
  19     public class WebFormView : IView {
  20
  21         private IBuildManager _buildManager;
  22
  23         public WebFormView(string viewPath)
  24             : this(viewPath, null) {
  25         }
  26
  27         public WebFormView(string viewPath, string masterPath) {
  28             if (String.IsNullOrEmpty(viewPath)) {
  29                 throw new ArgumentException(MvcResources.Common_NullOrEmpty, "viewPath");
  30             }
  31
  32             ViewPath = viewPath;
  33             MasterPath = masterPath ?? String.Empty;
  34         }
  35
  36         internal IBuildManager BuildManager {
  37             get {
  38                 if (_buildManager == null) {
  39                     _buildManager = new BuildManagerWrapper();
  40                 }
  41                 return _buildManager;
  42             }
  43             set {
  44                 _buildManager = value;
  45             }
  46         }
  47
  48         public string MasterPath {
  49             get;
  50             private set;
  51         }
  52
  53         public string ViewPath {
  54             get;
  55             private set;
  56         }
  57
  58         public virtual void Render(ViewContext viewContext, TextWriter writer) {
  59             if (viewContext == null) {
  60                 throw new ArgumentNullException("viewContext");
  61             }
  62
  63             object viewInstance = BuildManager.CreateInstanceFromVirtualPath(ViewPath, typeof(object));
  64             if (viewInstance == null) {
  65                 throw new InvalidOperationException(
  66                     String.Format(
  67                         CultureInfo.CurrentUICulture,
  68                         MvcResources.WebFormViewEngine_ViewCouldNotBeCreated,
  69                         ViewPath));
  70             }
  71
  72             ViewPage viewPage = viewInstance as ViewPage;
  73             if (viewPage != null) {
  74                 RenderViewPage(viewContext, viewPage);
  75                 return;
  76             }
  77
  78             ViewUserControl viewUserControl = viewInstance as ViewUserControl;
  79             if (viewUserControl != null) {
  80                 RenderViewUserControl(viewContext, viewUserControl);
  81                 return;
  82             }
  83
  84             throw new InvalidOperationException(
  85                 String.Format(
  86                     CultureInfo.CurrentUICulture,
  87                     MvcResources.WebFormViewEngine_WrongViewBase,
  88                     ViewPath));
  89         }
  90
  91         private void RenderViewPage(ViewContext context, ViewPage page) {
  92             if (!String.IsNullOrEmpty(MasterPath)) {
  93                 page.MasterLocation = MasterPath;
  94             }
  95
  96             page.ViewData = context.ViewData;
  97             page.RenderView(context);
  98         }
  99
 100         private void RenderViewUserControl(ViewContext context, ViewUserControl control) {
 101             if (!String.IsNullOrEmpty(MasterPath)) {
 102                 throw new InvalidOperationException(MvcResources.WebFormViewEngine_UserControlCannotHaveMaster);
 103             }
 104
 105             control.ViewData = context.ViewData;
 106             control.RenderView(context);
 107         }
 108     }
 109 }