2 // System.ComponentModel.ReadOnlyAttribute.cs
5 // Chris J Breisch (cjbreisch@altavista.net)
7 // (C) 2002 Chris J Breisch
11 // Permission is hereby granted, free of charge, to any person obtaining
12 // a copy of this software and associated documentation files (the
13 // "Software"), to deal in the Software without restriction, including
14 // without limitation the rights to use, copy, modify, merge, publish,
15 // distribute, sublicense, and/or sell copies of the Software, and to
16 // permit persons to whom the Software is furnished to do so, subject to
17 // the following conditions:
19 // The above copyright notice and this permission notice shall be
20 // included in all copies or substantial portions of the Software.
22 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
23 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
24 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
25 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
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28 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
30 namespace System.ComponentModel {
31 [AttributeUsage (AttributeTargets.All)]
32 sealed public class ReadOnlyAttribute : Attribute {
35 public static readonly ReadOnlyAttribute No;
36 public static readonly ReadOnlyAttribute Yes;
37 public static readonly ReadOnlyAttribute Default;
39 static ReadOnlyAttribute ()
41 No = new ReadOnlyAttribute (false);
42 Yes = new ReadOnlyAttribute (true);
43 Default = new ReadOnlyAttribute (false);
46 public ReadOnlyAttribute (bool isReadOnly)
48 this.read_only = isReadOnly;
51 public bool IsReadOnly {
57 public override int GetHashCode ()
59 return read_only.GetHashCode ();
62 public override bool Equals (object obj)
64 if (!(obj is ReadOnlyAttribute))
67 return (((ReadOnlyAttribute) obj).IsReadOnly.Equals (read_only));
70 public override bool IsDefaultAttribute ()
72 return Equals (Default);