mcs/class/System.Web/System.Web.UI/HiddenFieldPageStatePersister.cs

   1 //
   2 // System.Web.Compilation.AppCodeCompiler: A compiler for the App_Code folder
   3 //
   4 // Authors:
   5 //   Marek Habersack (grendello@gmail.com)
   6 //
   7 // (C) 2006 Marek Habersack
   8 // (C) 2007-2010 Novell, Inc (http://novell.com/)
   9 //
  10
  11 //
  12 // Permission is hereby granted, free of charge, to any person obtaining
  13 // a copy of this software and associated documentation files (the
  14 // "Software"), to deal in the Software without restriction, including
  15 // without limitation the rights to use, copy, modify, merge, publish,
  16 // distribute, sublicense, and/or sell copies of the Software, and to
  17 // permit persons to whom the Software is furnished to do so, subject to
  18 // the following conditions:
  19 //
  20 // The above copyright notice and this permission notice shall be
  21 // included in all copies or substantial portions of the Software.
  22 //
  23 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  24 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  25 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  26 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  27 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  28 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  29 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  30 //
  31 using System.Security.Permissions;
  32
  33 namespace System.Web.UI
  34 {
  35         // CAS
  36         [AspNetHostingPermission (SecurityAction.LinkDemand, Level = AspNetHostingPermissionLevel.Minimal)]
  37         [AspNetHostingPermission (SecurityAction.InheritanceDemand, Level = AspNetHostingPermissionLevel.Minimal)]
  38         public class HiddenFieldPageStatePersister : PageStatePersister
  39         {
  40                 public HiddenFieldPageStatePersister (Page page)
  41                         : base(page)
  42                 {
  43                 }
  44
  45                 public override void Load ()
  46                 {
  47 #if TARGET_J2EE
  48                         if (Page.FacesContext != null) {
  49                                 if (Page.PageState != null) {
  50                                         ViewState = Page.PageState.First;
  51                                         ControlState = Page.PageState.Second;
  52                                 }
  53                                 return;
  54                         }
  55 #endif
  56                         string rawViewState = Page.RawViewState;
  57                         IStateFormatter formatter = StateFormatter;
  58                         if (!String.IsNullOrEmpty (rawViewState)) {
  59                                 Pair pair = formatter.Deserialize (rawViewState) as Pair;
  60                                 if (pair != null) {
  61                                         ViewState = pair.First;
  62                                         ControlState = pair.Second;
  63                                 }
  64                         }
  65                 }
  66
  67                 public override void Save ()
  68                 {
  69 #if TARGET_J2EE
  70                         if (Page.FacesContext != null) {
  71                                 if (ViewState != null || ControlState != null)
  72                                         Page.PageState = new Pair (ViewState, ControlState);
  73                                 return;
  74                         }
  75 #endif
  76                         IStateFormatter formatter = StateFormatter;
  77                         Page.RawViewState = formatter.Serialize (new Pair (ViewState, ControlState));
  78                 }
  79         }
  80 }
  81