class/System/System.ComponentModel/LookupBindingPropertiesAttribute.cs

   1 //
   2 // System.Diagnostics.LookupBindingPropertiesAttribute.cs
   3 //
   4 // Authors:
   5 //   Rolf Bjarne Kvinge  (RKvinge@novell.com)
   6 //
   7 // (C) 2002
   8 //
   9
  10 //
  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:
  18 //
  19 // The above copyright notice and this permission notice shall be
  20 // included in all copies or substantial portions of the Software.
  21 //
  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.
  29 //
  30
  31 #if NET_2_0
  32
  33 using System;
  34
  35 namespace System.ComponentModel
  36 {
  37         [AttributeUsage(AttributeTargets.Class)]
  38         public sealed class LookupBindingPropertiesAttribute : Attribute
  39         {
  40                 private string data_source;
  41                 private string display_member;
  42                 private string value_member;
  43                 private string lookup_member;
  44
  45                 public static readonly LookupBindingPropertiesAttribute Default;
  46
  47                 static LookupBindingPropertiesAttribute()
  48                 {
  49                         Default = new LookupBindingPropertiesAttribute ();
  50                 }
  51
  52                 public LookupBindingPropertiesAttribute(string dataSource, string displayMember, string valueMember, string lookupMember)
  53                 {
  54                         data_source = dataSource;
  55                         display_member = displayMember;
  56                         value_member = valueMember;
  57                         lookup_member = lookupMember;
  58                 }
  59
  60                 public LookupBindingPropertiesAttribute()
  61                 {
  62                 }
  63
  64                 public override int GetHashCode()
  65                 {
  66                         return  (data_source != null ? data_source.GetHashCode () : 1) << 24 +
  67                                 (display_member != null ? display_member.GetHashCode () : 1) << 16 +
  68                                 (lookup_member != null ? lookup_member.GetHashCode () : 1) << 8 +
  69                                 (value_member != null ? value_member.GetHashCode () : 1);
  70                 }
  71
  72                 public override bool Equals(object obj)
  73                 {
  74                         LookupBindingPropertiesAttribute other = obj as LookupBindingPropertiesAttribute;
  75
  76                         if (other == null)
  77                                 return false;
  78
  79                         if (data_source != other.data_source || display_member != other.display_member)
  80                                 return false;
  81
  82                         if (value_member != other.value_member || lookup_member != other.lookup_member)
  83                                 return false;
  84
  85                         return true;
  86                 }
  87
  88                 public string DataSource {
  89                         get {
  90                                 return data_source;
  91                         }
  92                 }
  93
  94                 public string DisplayMember {
  95                         get     {
  96                                 return display_member;
  97                         }
  98                 }
  99
 100                 public string LookupMember {
 101                         get     {
 102                                 return lookup_member;
 103                         }
 104                 }
 105
 106                 public string ValueMember {
 107                         get     {
 108                                 return value_member;
 109                         }
 110                 }
 111
 112         }
 113 }
 114 #endif