class/System/System.ComponentModel/DesignerAttribute.cs

   1 //
   2 // System.ComponentModel.DesignerAttribute.cs
   3 //
   4 // Author:
   5 //   Alejandro Sánchez Acosta (raciel@es.gnu.org)
   6 //   Andreas Nahr (ClassDevelopment@A-SoftTech.com)
   7 //
   8 // (C) Alejandro Sánchez Acosta
   9 // (C) 2003 Andreas Nahr
  10 //
  11
  12 //
  13 // Permission is hereby granted, free of charge, to any person obtaining
  14 // a copy of this software and associated documentation files (the
  15 // "Software"), to deal in the Software without restriction, including
  16 // without limitation the rights to use, copy, modify, merge, publish,
  17 // distribute, sublicense, and/or sell copies of the Software, and to
  18 // permit persons to whom the Software is furnished to do so, subject to
  19 // the following conditions:
  20 //
  21 // The above copyright notice and this permission notice shall be
  22 // included in all copies or substantial portions of the Software.
  23 //
  24 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  25 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  26 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  27 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  28 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  29 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  30 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  31 //
  32
  33 using System.ComponentModel.Design;
  34
  35 namespace System.ComponentModel
  36 {
  37
  38         /// <summary>
  39         ///   Designer Attribute for classes.
  40         /// </summary>
  41         [AttributeUsage(AttributeTargets.Class | AttributeTargets.Interface, AllowMultiple = true, Inherited = true)]
  42         public sealed class DesignerAttribute : Attribute
  43         {
  44                 private string name;
  45                 private string basetypename;
  46
  47                 public DesignerAttribute (string designerTypeName)
  48                 {
  49                         if (designerTypeName == null)
  50                                 throw new NullReferenceException ();
  51                         name = designerTypeName;
  52                         basetypename = typeof(IDesigner).FullName;
  53                 }
  54
  55                 public DesignerAttribute (Type designerType)
  56                         : this (designerType.AssemblyQualifiedName)
  57                 {
  58                 }
  59
  60                 public DesignerAttribute (string designerTypeName, Type designerBaseType)
  61                         : this (designerTypeName, designerBaseType.AssemblyQualifiedName)
  62                 {
  63                 }
  64
  65                 public DesignerAttribute (Type designerType, Type designerBaseType)
  66                         : this (designerType.AssemblyQualifiedName, designerBaseType.AssemblyQualifiedName)
  67                 {
  68                 }
  69
  70                 public DesignerAttribute (string designerTypeName, string designerBaseTypeName)
  71                 {
  72                         if (designerTypeName == null)
  73                                 throw new NullReferenceException ();
  74                         name = designerTypeName;
  75                         basetypename = designerBaseTypeName;
  76                 }
  77
  78                 public string DesignerBaseTypeName {
  79                         get {
  80                                 return basetypename;
  81                         }
  82                 }
  83
  84                 public string DesignerTypeName {
  85                         get {
  86                                 return name;
  87                         }
  88                 }
  89
  90                 public override object TypeId {
  91                         get {
  92                                 string baseTypeNameOnly = basetypename;
  93                                 int index = baseTypeNameOnly.IndexOf (',');
  94                                 if (index != -1) // strip name
  95                                         baseTypeNameOnly = baseTypeNameOnly.Substring (0, index);
  96                                 return this.GetType ().ToString() + baseTypeNameOnly;
  97                         }
  98                 }
  99
 100                 public override bool Equals (object obj)
 101                 {
 102                         if (!(obj is DesignerAttribute))
 103                                 return false;
 104                         return ((DesignerAttribute) obj).DesignerBaseTypeName.Equals (basetypename) &&
 105                                 ((DesignerAttribute) obj).DesignerTypeName.Equals (name);
 106                 }
 107
 108                 public override int GetHashCode ()
 109                 {
 110                         return string.Concat(name, basetypename).GetHashCode ();
 111                 }
 112         }
 113 }