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source: trunk/sources/HeuristicLab.Core/3.3/ItemSet.cs @ 2931

Last change on this file since 2931 was 2833, checked in by swagner, 15 years ago

Operator architecture refactoring (#95)

  • added missing null checks in constructors of item collections and Variable
  • set AllowDrop property to true in VariableView
File size: 3.9 KB
Line 
1#region License Information
2/* HeuristicLab
3 * Copyright (C) 2002-2010 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.Linq;
24using System.Collections;
25using System.Collections.Generic;
26using System.Collections.ObjectModel;
27using System.Text;
28using System.Drawing;
29using HeuristicLab.Persistence.Default.CompositeSerializers.Storable;
30using HeuristicLab.Common.Resources;
31using HeuristicLab.Collections;
32
33
34namespace HeuristicLab.Core {
35  [EmptyStorableClass]
36  [Item("ItemSet<T>", "Represents a set of items.")]
37  public class ItemSet<T> : ObservableSet<T>, IItem where T : class, IItem {
38    [Storable(Name = "RestoreEvents")]
39    private object RestoreEvents {
40      get { return null; }
41      set {
42        foreach (T item in this)
43          if (item != null) item.Changed += new ChangedEventHandler(Item_Changed);
44      }
45    }
46
47    public virtual string ItemName {
48      get { return ItemAttribute.GetName(this.GetType()); }
49    }
50    public virtual string ItemDescription {
51      get { return ItemAttribute.GetDescription(this.GetType()); }
52    }
53    public virtual Image ItemImage {
54      get { return VS2008ImageLibrary.Class; }
55    }
56
57    public ItemSet() : base() { }
58    public ItemSet(IEnumerable<T> collection) : base(collection) {
59      foreach (T item in this)
60        if (item != null) item.Changed += new ChangedEventHandler(Item_Changed);
61    }
62
63    public object Clone() {
64      return Clone(new Cloner());
65    }
66
67    public virtual IDeepCloneable Clone(Cloner cloner) {
68      ItemSet<T> clone = (ItemSet<T>)Activator.CreateInstance(this.GetType(), this.Select(x => (T)cloner.Clone(x)));
69      cloner.RegisterClonedObject(this, clone);
70      return clone;
71    }
72
73    public override string ToString() {
74      return ItemName;
75    }
76
77    public event ChangedEventHandler Changed;
78    protected void OnChanged() {
79      OnChanged(new ChangedEventArgs());
80    }
81    protected virtual void OnChanged(ChangedEventArgs e) {
82      if ((e.RegisterChangedObject(this)) && (Changed != null))
83        Changed(this, e);
84    }
85
86    protected override void OnItemsAdded(IEnumerable<T> items) {
87      foreach (T item in items)
88        if (item != null) item.Changed += new ChangedEventHandler(Item_Changed);
89      base.OnItemsAdded(items);
90    }
91    protected override void OnItemsRemoved(IEnumerable<T> items) {
92      foreach (T item in items)
93        if (item != null) item.Changed -= new ChangedEventHandler(Item_Changed);
94      base.OnItemsRemoved(items);
95    }
96    protected override void OnCollectionReset(IEnumerable<T> items, IEnumerable<T> oldItems) {
97      foreach (T oldItem in oldItems)
98        if (oldItem != null) oldItem.Changed -= new ChangedEventHandler(Item_Changed);
99      foreach (T item in items)
100        if (item != null) item.Changed += new ChangedEventHandler(Item_Changed);
101      base.OnCollectionReset(items, oldItems);
102    }
103    protected override void OnPropertyChanged(string propertyName) {
104      base.OnPropertyChanged(propertyName);
105      OnChanged();
106    }
107
108    private void Item_Changed(object sender, ChangedEventArgs e) {
109      OnChanged(e);
110    }
111  }
112}
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