MonoRail/Castle.MonoRail.Framework/ViewComponents/AuthenticatedContent.cs

   1 // Copyright 2004-2008 Castle Project - http://www.castleproject.org/
   2 //
   3 // Licensed under the Apache License, Version 2.0 (the "License");
   4 // you may not use this file except in compliance with the License.
   5 // You may obtain a copy of the License at
   6 //
   7 //     http://www.apache.org/licenses/LICENSE-2.0
   8 //
   9 // Unless required by applicable law or agreed to in writing, software
  10 // distributed under the License is distributed on an "AS IS" BASIS,
  11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  12 // See the License for the specific language governing permissions and
  13 // limitations under the License.
  14
  15 namespace Castle.MonoRail.Framework.ViewComponents
  16 {
  17         using System.Security.Principal;
  18
  19         /// <summary>
  20         /// This component renders different inner
  21         /// sections based on the current principal state (authenticated or not)
  22         /// <code>
  23         /// #blockcomponent(AuthenticatedContent)
  24         ///     #logged
  25         ///   Welcome back $context.CurrentUser.Identity.Name
  26         /// #end
  27         /// #notlogged
  28         ///   Create your account by clicking here.
  29         /// #end
  30         /// #end
  31         /// </code>
  32         /// </summary>
  33         public class AuthenticatedContent : ViewComponent
  34         {
  35                 private const string LoggedSection = "logged";
  36                 private const string NotLoggedSection = "notlogged";
  37
  38                 /// <summary>
  39                 /// Called by the framework so the component can
  40                 /// render its content
  41                 /// </summary>
  42                 public override void Render()
  43                 {
  44                         if (IsAuthenticated())
  45                         {
  46                                 Context.RenderSection(LoggedSection);
  47                         }
  48                         else
  49                         {
  50                                 Context.RenderSection(NotLoggedSection);
  51                         }
  52                 }
  53
  54                 /// <summary>
  55                 /// Implementor should return true only if the
  56                 /// <c>name</c> is a known section the view component
  57                 /// supports.
  58                 /// </summary>
  59                 /// <param name="name">section being added</param>
  60                 /// <returns>
  61                 ///     <see langword="true"/> if section is supported
  62                 /// </returns>
  63                 public override bool SupportsSection(string name)
  64                 {
  65                         return name == LoggedSection || name == NotLoggedSection;
  66                 }
  67
  68                 private bool IsAuthenticated()
  69                 {
  70                         IPrincipal user = EngineContext.CurrentUser;
  71
  72                         return user != null && user.Identity != null && user.Identity.IsAuthenticated;
  73                 }
  74         }
  75 }