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

   1 //
   2 // System.Web.UI.PersistChildrenAttribute.cs
   3 //
   4 // Duncan Mak  (duncan@ximian.com)
   5 //
   6 // (C) Ximian, Inc.
   7 // Copyright (C) 2005 Novell, Inc (http://www.novell.com)
   8 //
   9 // Permission is hereby granted, free of charge, to any person obtaining
  10 // a copy of this software and associated documentation files (the
  11 // "Software"), to deal in the Software without restriction, including
  12 // without limitation the rights to use, copy, modify, merge, publish,
  13 // distribute, sublicense, and/or sell copies of the Software, and to
  14 // permit persons to whom the Software is furnished to do so, subject to
  15 // the following conditions:
  16 //
  17 // The above copyright notice and this permission notice shall be
  18 // included in all copies or substantial portions of the Software.
  19 //
  20 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  21 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  22 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  23 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  24 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  25 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  26 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  27 //
  28
  29 using System.Security.Permissions;
  30
  31 namespace System.Web.UI {
  32
  33         // CAS - no InheritanceDemand here as the class is sealed
  34         [AspNetHostingPermission (SecurityAction.LinkDemand, Level = AspNetHostingPermissionLevel.Minimal)]
  35         // attributes
  36         [AttributeUsage (AttributeTargets.Class)]
  37         public sealed class PersistChildrenAttribute : Attribute
  38         {
  39                 bool persist;
  40 #if NET_2_0
  41                 bool usesCustomPersistence;
  42 #endif
  43
  44                 public PersistChildrenAttribute (bool persist)
  45                 {
  46                         this.persist = persist;
  47                 }
  48
  49 #if NET_2_0
  50                 public PersistChildrenAttribute (bool persist,
  51                                                  bool usesCustomPersistence)
  52                 {
  53                         this.persist = persist;
  54                         this.usesCustomPersistence = usesCustomPersistence;
  55                 }
  56 #endif
  57
  58                 public static readonly PersistChildrenAttribute Default = new PersistChildrenAttribute (true);
  59                 public static readonly PersistChildrenAttribute Yes = new PersistChildrenAttribute (true);
  60                 public static readonly PersistChildrenAttribute No = new PersistChildrenAttribute (false);
  61
  62                 public bool Persist {
  63                         get { return persist; }
  64                 }
  65
  66 #if NET_2_0
  67                 public bool UsesCustomPersistence
  68                 {
  69                         get {
  70                                 return (usesCustomPersistence);
  71                         }
  72                 }
  73 #endif
  74
  75                 public override bool Equals (object obj)
  76                 {
  77                         PersistChildrenAttribute pobj = (obj as PersistChildrenAttribute);
  78                         if (pobj == null)
  79                                 return false;
  80
  81                         return (pobj.persist == persist
  82 #if NET_2_0
  83                                 && pobj.usesCustomPersistence == usesCustomPersistence
  84 #endif
  85                                 );
  86                 }
  87
  88                 public override int GetHashCode ()
  89                 {
  90                         return persist ? 1 : 0;
  91                 }
  92
  93                 public override bool IsDefaultAttribute ()
  94                 {
  95                         /* No idea what the usesCustomPersistence
  96                          * default is (I assume false, but its not
  97                          * documented)
  98                          */
  99                         return (persist == true);
 100                 }
 101         }
 102 }