mcs/class/System.Drawing/System.Drawing.Printing/PrintingPermission.cs

   1 //
   2 // System.Drawing.PrintingPermission.cs
   3 //
   4 // Author:
   5 //   Dennis Hayes (dennish@Raytek.com)
   6 //   Herve Poussineau (hpoussineau@fr.st)
   7 //
   8 // (C) 2002 Ximian, Inc
   9 //
  10
  11 //
  12 // Copyright (C) 2004 Novell, Inc (http://www.novell.com)
  13 //
  14 // Permission is hereby granted, free of charge, to any person obtaining
  15 // a copy of this software and associated documentation files (the
  16 // "Software"), to deal in the Software without restriction, including
  17 // without limitation the rights to use, copy, modify, merge, publish,
  18 // distribute, sublicense, and/or sell copies of the Software, and to
  19 // permit persons to whom the Software is furnished to do so, subject to
  20 // the following conditions:
  21 //
  22 // The above copyright notice and this permission notice shall be
  23 // included in all copies or substantial portions of the Software.
  24 //
  25 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  26 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  27 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  28 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  29 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  30 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  31 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  32 //
  33 using System;
  34 using System.Security;
  35 using System.Security.Permissions;
  36
  37 namespace System.Drawing.Printing
  38 {
  39         /// <summary>
  40         /// Summary description for PrintingPermission.
  41         /// </summary>
  42         ///
  43         [Serializable]
  44         public sealed class PrintingPermission : CodeAccessPermission, IUnrestrictedPermission
  45         {
  46                 private PrintingPermissionLevel _Level;
  47
  48                 public PrintingPermission(PermissionState state) {
  49                         switch (state)
  50                         {
  51                                 case PermissionState.None:
  52                                         Level = PrintingPermissionLevel.NoPrinting;
  53                                         break;
  54                                 case PermissionState.Unrestricted:
  55                                         Level = PrintingPermissionLevel.AllPrinting;
  56                                         break;
  57                                 default:
  58                                         // should never happen
  59                                         throw new ArgumentException("state");
  60                         }
  61                 }
  62                 public PrintingPermission(PrintingPermissionLevel printingLevel) {
  63                         Level = printingLevel;
  64                 }
  65
  66 // properties
  67                 public PrintingPermissionLevel Level{
  68                         get{
  69                                 return _Level;
  70                         }
  71                         set{
  72                                 _Level = value;
  73                         }
  74                 }
  75
  76 // methods
  77                 public override IPermission Copy(){
  78                         return new PrintingPermission(this.Level);
  79                 }
  80
  81                 [MonoTODO("PrintingPermission.FromXml")]
  82                 public override void FromXml(SecurityElement esd)
  83                 {
  84                         throw new NotImplementedException();
  85                 }
  86
  87                 public override IPermission Intersect(IPermission target)
  88                 {
  89                         if (this.IsSubsetOf(target))
  90                                 return this.Copy();
  91                         else
  92                                 return target.Copy();
  93                 }
  94
  95                 public override bool IsSubsetOf(IPermission target)
  96                 {
  97                         if (!(target is PrintingPermission))
  98                                 throw new ArgumentException("target");
  99
 100                         return this.Level <= (target as PrintingPermission).Level;
 101                 }
 102
 103                 public bool IsUnrestricted()
 104                 {
 105                         return (this.Level == PrintingPermissionLevel.AllPrinting);
 106                 }
 107
 108                 [MonoTODO("PrintingPermission.ToXml")]
 109                 public override SecurityElement ToXml()
 110                 {
 111                         throw new NotImplementedException();
 112                 }
 113
 114                 public override IPermission Union(IPermission target)
 115                 {
 116                         if (this.IsSubsetOf(target))
 117                                 return target.Copy();
 118                         else
 119                                 return this.Copy();
 120                 }
 121         }
 122 }