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source: trunk/sources/HeuristicLab.Operators/3.3/MultipleSuccessorsOperator.cs @ 2756

Last change on this file since 2756 was 2756, checked in by swagner, 14 years ago

Operator architecture refactoring (#95)

  • worked on parameters and operators
File size: 4.7 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;
26using System.Xml;
27using HeuristicLab.Collections;
28using HeuristicLab.Core;
29using HeuristicLab.Parameters;
30using HeuristicLab.Persistence.Default.CompositeSerializers.Storable;
31
32namespace HeuristicLab.Operators {
33  /// <summary>
34  /// A base class for operators which have multiple successors.
35  /// </summary>
36  [Item("MultipleSuccessorsOperator", "A base class for operators which have multiple successors.")]
37  [Creatable("Test")]
38  [EmptyStorableClass]
39  public abstract class MultipleSuccessorsOperator : Operator {
40    protected IValueParameter<IOperator>[] SuccessorParameters {
41      get {
42        return (from p in Parameters
43                where p is IValueParameter<IOperator>
44                orderby p.Name ascending
45                select (IValueParameter<IOperator>)p).ToArray();
46      }
47    }
48
49    private OperatorList successors;
50    public OperatorList Successors {
51      get {
52        if (successors == null) {
53          successors = new OperatorList();
54          var opParams = SuccessorParameters;
55          foreach (IValueParameter<IOperator> opParam in opParams) {
56            opParam.ValueChanged += new EventHandler(opParam_ValueChanged);
57            successors.Add(opParam.Value);
58          }
59          successors.ItemsAdded += new CollectionItemsChangedEventHandler<IndexedItem<IOperator>>(successors_ItemsAdded);
60          successors.ItemsRemoved += new CollectionItemsChangedEventHandler<IndexedItem<IOperator>>(successors_ItemsRemoved);
61          successors.ItemsReplaced += new CollectionItemsChangedEventHandler<IndexedItem<IOperator>>(successors_ItemsReplaced);
62          successors.ItemsMoved += new CollectionItemsChangedEventHandler<IndexedItem<IOperator>>(successors_ItemsMoved);
63          successors.CollectionReset += new CollectionItemsChangedEventHandler<IndexedItem<IOperator>>(successors_CollectionReset);
64        }
65        return successors;
66      }
67    }
68
69    public MultipleSuccessorsOperator()
70      : base() {
71    }
72
73    private void UpdateOperatorParameters() {
74      var opParams = SuccessorParameters;
75      foreach (IValueParameter<IOperator> opParam in opParams) {
76        opParam.ValueChanged -= new EventHandler(opParam_ValueChanged);
77        Parameters.Remove(opParam.Name);
78      }
79      for (int i = 0; i < Successors.Count; i++) {
80        IValueParameter<IOperator> opParam = new OperatorParameter(i.ToString(), string.Empty, Successors[i]);
81        opParam.ValueChanged += new EventHandler(opParam_ValueChanged);
82        Parameters.Add(opParam);
83      }
84    }
85
86    private void successors_ItemsAdded(object sender, CollectionItemsChangedEventArgs<IndexedItem<IOperator>> e) {
87      UpdateOperatorParameters();
88    }
89    private void successors_ItemsRemoved(object sender, CollectionItemsChangedEventArgs<IndexedItem<IOperator>> e) {
90      UpdateOperatorParameters();
91    }
92    private void successors_ItemsReplaced(object sender, CollectionItemsChangedEventArgs<IndexedItem<IOperator>> e) {
93      foreach (IndexedItem<IOperator> item in e.Items)
94        ((IValueParameter<IOperator>)Parameters[item.Index.ToString()]).Value = item.Value;
95    }
96    private void successors_ItemsMoved(object sender, CollectionItemsChangedEventArgs<IndexedItem<IOperator>> e) {
97      foreach (IndexedItem<IOperator> item in e.Items)
98        ((IValueParameter<IOperator>)Parameters[item.Index.ToString()]).Value = item.Value;
99    }
100    private void successors_CollectionReset(object sender, CollectionItemsChangedEventArgs<IndexedItem<IOperator>> e) {
101      UpdateOperatorParameters();
102    }
103    private void opParam_ValueChanged(object sender, EventArgs e) {
104      IValueParameter<IOperator> opParam = (IValueParameter<IOperator>)sender;
105      int index = int.Parse(opParam.Name);
106      successors[index] = opParam.Value;
107    }
108  }
109}
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