stub out things to get the beatles xbox site up and running
[moon.git] / class / System.Windows / System.ComponentModel / SortDescription.cs
blob6c04e3d0bc882cb0b71b28e1ec349e6c7299e7e9
1 // Permission is hereby granted, free of charge, to any person obtaining
2 // a copy of this software and associated documentation files (the
3 // "Software"), to deal in the Software without restriction, including
4 // without limitation the rights to use, copy, modify, merge, publish,
5 // distribute, sublicense, and/or sell copies of the Software, and to
6 // permit persons to whom the Software is furnished to do so, subject to
7 // the following conditions:
8 //
9 // The above copyright notice and this permission notice shall be
10 // included in all copies or substantial portions of the Software.
11 //
12 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
13 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
14 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
15 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
16 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
17 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
18 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
20 // Copyright (c) 2008 Novell, Inc. (http://www.novell.com)
22 // Authors:
23 // Chris Toshok (toshok@ximian.com)
24 // Brian O'Keefe (zer0keefie@gmail.com)
27 using System;
29 namespace System.ComponentModel {
31 public struct SortDescription
33 private string sortPropertyName;
34 private ListSortDirection sortDirection;
35 private bool isSealed;
37 public SortDescription (string propertyName, ListSortDirection direction)
39 if(direction != ListSortDirection.Ascending && direction != ListSortDirection.Descending)
40 throw new ArgumentException("direction");
42 sortPropertyName = propertyName;
43 sortDirection = direction;
44 isSealed = false;
47 public static bool operator!= (SortDescription sd1, SortDescription sd2)
49 return !(sd1 == sd2);
52 public static bool operator== (SortDescription sd1, SortDescription sd2)
54 return sd1.sortDirection == sd2.sortDirection && sd1.sortPropertyName == sd2.sortPropertyName;
57 public ListSortDirection Direction {
58 get { return sortDirection; }
59 set {
60 if(isSealed)
61 throw new InvalidOperationException("Cannot change Direction once the SortDescription has been sealed.");
63 if(value != ListSortDirection.Ascending && value != ListSortDirection.Descending)
64 throw new ArgumentException("direction");
66 sortDirection = value;
70 public bool IsSealed {
71 get { return isSealed; }
74 public string PropertyName {
75 get { return sortPropertyName; }
76 set {
77 if(isSealed)
78 throw new InvalidOperationException("Cannot change Direction once the SortDescription has been sealed.");
80 sortPropertyName = value;
84 public override bool Equals (object obj)
86 if (!(obj is SortDescription))
87 return false;
88 return ((SortDescription)obj) == this;
91 public override int GetHashCode ()
93 if(sortPropertyName == null)
94 return sortDirection.GetHashCode ();
95 return sortPropertyName.GetHashCode () ^ sortDirection.GetHashCode ();
98 internal void Seal()
100 isSealed = true;