2 // (C) 2006 Mainsoft Corporation (http://www.mainsoft.com)
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5 // Konstantin Triger <kostat@mainsoft.com>
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7 // Permission is hereby granted, free of charge, to any person obtaining
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8 // a copy of this software and associated documentation files (the
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9 // "Software"), to deal in the Software without restriction, including
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10 // without limitation the rights to use, copy, modify, merge, publish,
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11 // distribute, sublicense, and/or sell copies of the Software, and to
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12 // permit persons to whom the Software is furnished to do so, subject to
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13 // the following conditions:
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15 // The above copyright notice and this permission notice shall be
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16 // included in all copies or substantial portions of the Software.
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18 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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19 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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20 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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21 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
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22 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
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23 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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24 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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30 using System.Collections.Generic;
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33 namespace System.ComponentModel
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35 [AttributeUsageAttribute (AttributeTargets.Class)]
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36 public sealed class DataObjectAttribute : Attribute
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40 public static readonly DataObjectAttribute DataObject;
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41 public static readonly DataObjectAttribute Default;
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42 public static readonly DataObjectAttribute NonDataObject;
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44 readonly bool _isDataObject;
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48 #region Constructors
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50 static DataObjectAttribute () {
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51 DataObject = new DataObjectAttribute (true);
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52 NonDataObject = new DataObjectAttribute (false);
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53 Default = NonDataObject;
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56 public DataObjectAttribute () : this (true) { }
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57 public DataObjectAttribute (bool isDataObject) {
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58 _isDataObject = isDataObject;
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65 public bool IsDataObject { get { return _isDataObject; } }
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71 public override bool Equals (object obj) {
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72 if (!(obj is DataObjectAttribute))
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75 return ((DataObjectAttribute) obj).IsDataObject == IsDataObject;
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77 public override int GetHashCode () {
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78 return IsDataObject.GetHashCode ();
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80 public override bool IsDefaultAttribute () {
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81 return Default.Equals (this);
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