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
26 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
27 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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 read_only
)
48 this.read_only
= read_only
;
51 public bool IsReadOnly
{
57 public override int GetHashCode ()
59 return read_only
.GetHashCode ();
62 public override bool Equals (object o
)
64 if (!(o
is ReadOnlyAttribute
))
67 return (((ReadOnlyAttribute
) o
).IsReadOnly
.Equals (read_only
));
70 public override bool IsDefaultAttribute ()
72 return Equals (Default
);