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) 2005-2010 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                 bool usesCustomPersistence;
  41
  42                 public PersistChildrenAttribute (bool persist)
  43                 {
  44                         this.persist = persist;
  45                 }
  46
  47                 public PersistChildrenAttribute (bool persist,
  48                                                  bool usesCustomPersistence)
  49                 {
  50                         this.persist = persist;
  51                         this.usesCustomPersistence = usesCustomPersistence;
  52                 }
  53
  54                 public static readonly PersistChildrenAttribute Default = new PersistChildrenAttribute (true);
  55                 public static readonly PersistChildrenAttribute Yes = new PersistChildrenAttribute (true);
  56                 public static readonly PersistChildrenAttribute No = new PersistChildrenAttribute (false);
  57
  58                 public bool Persist {
  59                         get { return persist; }
  60                 }
  61
  62                 public bool UsesCustomPersistence
  63                 {
  64                         get {
  65                                 return (usesCustomPersistence);
  66                         }
  67                 }
  68
  69                 public override bool Equals (object obj)
  70                 {
  71                         PersistChildrenAttribute pobj = (obj as PersistChildrenAttribute);
  72                         if (pobj == null)
  73                                 return false;
  74
  75                         return (pobj.persist == persist && pobj.usesCustomPersistence == usesCustomPersistence);
  76                 }
  77
  78                 public override int GetHashCode ()
  79                 {
  80                         return persist ? 1 : 0;
  81                 }
  82
  83                 public override bool IsDefaultAttribute ()
  84                 {
  85                         /* No idea what the usesCustomPersistence
  86                          * default is (I assume false, but its not
  87                          * documented)
  88                          */
  89                         return (persist == true);
  90                 }
  91         }
  92 }