source: trunk/sources/HeuristicLab.MainForm/3.2/ContentAttribute.cs @ 2724

Last change on this file since 2724 was 2724, checked in by mkommend, 10 years ago

corrected handling of generic content types (ticket #857)

File size: 2.5 KB
Line 
1#region License Information
2/* HeuristicLab
3 * Copyright (C) 2002-2008 Heuristic and Evolutionary Algorithms Laboratory (HEAL)
4 *
5 * This file is part of HeuristicLab.
6 *
7 * HeuristicLab is free software: you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation, either version 3 of the License, or
10 * (at your option) any later version.
11 *
12 * HeuristicLab is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
15 * GNU General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with HeuristicLab. If not, see <http://www.gnu.org/licenses/>.
19 */
20#endregion
21
22using System;
23using System.Collections.Generic;
24using System.Linq;
25using System.Text;
26
27namespace HeuristicLab.MainForm {
28  [AttributeUsage(AttributeTargets.Class, AllowMultiple = true, Inherited = false)]
29  public class ContentAttribute : Attribute {
30    private Type type;
31    public ContentAttribute(Type type) {
32      this.type = type;
33    }
34
35    public ContentAttribute(Type type, bool isDefaultView)
36      : this(type) {
37      this.isDefaultView = isDefaultView;
38    }
39
40    private bool isDefaultView;
41    public bool IsDefaultView {
42      get { return this.isDefaultView; }
43      set { this.isDefaultView = value; }
44    }
45
46    public static bool HasContentAttribute(Type viewType) {
47      ContentAttribute[] attributes = (ContentAttribute[])viewType.GetCustomAttributes(typeof(ContentAttribute), false);
48      return attributes.Length != 0;
49    }
50
51    public static bool CanViewType(Type viewType, Type content) {
52      ContentAttribute[] attributes = (ContentAttribute[])viewType.GetCustomAttributes(typeof(ContentAttribute), false);
53      return attributes.Any(a => content.IsAssignableTo(a.type));
54    }
55
56    internal static IEnumerable<Type> GetDefaultViewableTypes(Type viewType) {
57      ContentAttribute[] attributes = (ContentAttribute[])viewType.GetCustomAttributes(typeof(ContentAttribute), false);
58      return from a in attributes
59             where a.isDefaultView
60             select a.type;
61    }
62
63    internal static IEnumerable<Type> GetViewableTypes(Type viewType) {
64      ContentAttribute[] attributes = (ContentAttribute[])viewType.GetCustomAttributes(typeof(ContentAttribute), false);
65      return from a in attributes
66             select a.type;
67    }
68  }
69}
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