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source: branches/Persistence Test/HeuristicLab.MainForm/3.2/ContentAttribute.cs @ 2491

Last change on this file since 2491 was 2468, checked in by mkommend, 15 years ago

renamed method for determining default viewable types in ContentAttribute (ticket #771)

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
21using System;
22using System.Collections.Generic;
23using System.Linq;
24using System.Text;
25
26namespace HeuristicLab.MainForm {
27  [AttributeUsage(AttributeTargets.Class, AllowMultiple = true)]
28  public class ContentAttribute : Attribute {
29    private Type type;
30    public ContentAttribute(Type type) {
31      this.type = type;
32    }
33
34    public ContentAttribute(Type type, bool isDefaultView)
35      : this(type) {
36      this.isDefaultView = isDefaultView;
37    }
38
39    private bool isDefaultView;
40    public bool IsDefaultView {
41      get { return this.isDefaultView; }
42      set { this.isDefaultView = value; }
43    }
44
45    public static bool HasContentAttribute(Type viewType) {
46      ContentAttribute[] attributes = (ContentAttribute[])viewType.GetCustomAttributes(typeof(ContentAttribute), true);
47      return attributes.Length != 0;
48    }
49
50    public static bool CanViewType(Type viewType, Type content) {
51      ContentAttribute[] attributes = (ContentAttribute[])viewType.GetCustomAttributes(typeof(ContentAttribute), false);
52      return attributes.Any(a => a.type.IsAssignableFrom(content));
53    }
54
55    public static bool IsDefaultViewForType(Type viewType, Type content) {
56      ContentAttribute[] attributes = (ContentAttribute[])viewType.GetCustomAttributes(typeof(ContentAttribute), false);
57      return attributes.Any(a => a.isDefaultView && a.type == content);
58    }
59
60    public static IEnumerable<Type> GetDefaultViewableTypes(Type viewType) {
61      ContentAttribute[] attributes = (ContentAttribute[])viewType.GetCustomAttributes(typeof(ContentAttribute), true);
62      return from a in attributes
63             where a.isDefaultView
64             select a.type;
65    }
66  }
67}
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