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source: trunk/sources/HeuristicLab.Operators/3.3/MultiOperator.cs @ 4745

Last change on this file since 4745 was 4722, checked in by swagner, 14 years ago

Merged cloning refactoring branch back into trunk (#922)

File size: 5.9 KB
RevLine 
[2773]1#region License Information
2/* HeuristicLab
[2790]3 * Copyright (C) 2002-2010 Heuristic and Evolutionary Algorithms Laboratory (HEAL)
[2773]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;
[3211]23using System.Collections.Generic;
[2773]24using HeuristicLab.Collections;
[3376]25using HeuristicLab.Common;
[2773]26using HeuristicLab.Core;
27using HeuristicLab.Parameters;
28using HeuristicLab.Persistence.Default.CompositeSerializers.Storable;
29
30namespace HeuristicLab.Operators {
31  /// <summary>
[3407]32  /// A base class for operators which apply arbitrary many other operators of a specific type.
[2773]33  /// </summary>
[3822]34  [Item("MultiOperator", "A base class for operators which apply arbitrary many other operators of a specific type.")]
[3017]35  [StorableClass]
[3407]36  public abstract class MultiOperator<T> : SingleSuccessorOperator where T : class, IOperator {
37    private List<IValueParameter<T>> operatorParameters;
[2773]38
[3317]39    [Storable]
[3591]40    private IItemList<T> operators;
41    public IItemList<T> Operators {
[2773]42      get { return operators; }
[3591]43      protected set {
44        if (operators != value) {
45          if (value == null) throw new ArgumentException();
46          DeregisterOperatorsEvents();
47          operators = value;
48          RegisterOperatorsEvents();
49        }
50      }
[2773]51    }
52
[4722]53    [StorableConstructor]
54    protected MultiOperator(bool deserializing) : base(deserializing) { }
55    protected MultiOperator(MultiOperator<T> original, Cloner cloner)
56      : base(original, cloner) {
57      this.operators = cloner.Clone<IItemList<T>>(original.operators);
58      Initialize();
59    }
[3407]60    public MultiOperator()
[2773]61      : base() {
[3591]62      this.operators = new ItemList<T>();
[3211]63      Initialize();
[2773]64    }
[3591]65
[3211]66    [StorableHook(HookType.AfterDeserialization)]
[4722]67    private void AfterDeserialization() {
68      Initialize();
69    }
70   
[3211]71    private void Initialize() {
[3317]72      if (operators != null) RegisterOperatorsEvents();
[3407]73      operatorParameters = new List<IValueParameter<T>>();
[3211]74      for (int i = 0; i < Operators.Count; i++) {
[3407]75        IValueParameter<T> opParam = (IValueParameter<T>)Parameters[i.ToString()];
[3211]76        operatorParameters.Add(opParam);
77        opParam.ValueChanged += new EventHandler(opParam_ValueChanged);
78      }
79    }
80
[2773]81    private void UpdateOperatorParameters() {
[3407]82      foreach (IValueParameter<T> opParam in operatorParameters) {
[2773]83        opParam.ValueChanged -= new EventHandler(opParam_ValueChanged);
84        Parameters.Remove(opParam.Name);
85      }
[3211]86      operatorParameters.Clear();
[2773]87      for (int i = 0; i < Operators.Count; i++) {
[3729]88        IValueParameter<T> opParam = new OptionalValueParameter<T>(i.ToString(), string.Empty, Operators[i]);
[2773]89        opParam.ValueChanged += new EventHandler(opParam_ValueChanged);
90        Parameters.Add(opParam);
[3211]91        operatorParameters.Add(opParam);
[2773]92      }
93    }
[3211]94
95    #region Events
96    private void RegisterOperatorsEvents() {
[3445]97      operators.ItemsAdded += new CollectionItemsChangedEventHandler<IndexedItem<T>>(Operators_ItemsAdded);
98      operators.ItemsRemoved += new CollectionItemsChangedEventHandler<IndexedItem<T>>(Operators_ItemsRemoved);
99      operators.ItemsReplaced += new CollectionItemsChangedEventHandler<IndexedItem<T>>(Operators_ItemsReplaced);
100      operators.ItemsMoved += new CollectionItemsChangedEventHandler<IndexedItem<T>>(Operators_ItemsMoved);
101      operators.CollectionReset += new CollectionItemsChangedEventHandler<IndexedItem<T>>(Operators_CollectionReset);
[3211]102    }
103    private void DeregisterOperatorsEvents() {
[3445]104      operators.ItemsAdded -= new CollectionItemsChangedEventHandler<IndexedItem<T>>(Operators_ItemsAdded);
105      operators.ItemsRemoved -= new CollectionItemsChangedEventHandler<IndexedItem<T>>(Operators_ItemsRemoved);
106      operators.ItemsReplaced -= new CollectionItemsChangedEventHandler<IndexedItem<T>>(Operators_ItemsReplaced);
107      operators.ItemsMoved -= new CollectionItemsChangedEventHandler<IndexedItem<T>>(Operators_ItemsMoved);
108      operators.CollectionReset -= new CollectionItemsChangedEventHandler<IndexedItem<T>>(Operators_CollectionReset);
[3211]109    }
[3445]110    protected virtual void Operators_ItemsAdded(object sender, CollectionItemsChangedEventArgs<IndexedItem<T>> e) {
[2773]111      UpdateOperatorParameters();
112    }
[3445]113    protected virtual void Operators_ItemsRemoved(object sender, CollectionItemsChangedEventArgs<IndexedItem<T>> e) {
[2773]114      UpdateOperatorParameters();
115    }
[3445]116    protected virtual void Operators_ItemsReplaced(object sender, CollectionItemsChangedEventArgs<IndexedItem<T>> e) {
[3407]117      foreach (IndexedItem<T> item in e.Items)
[3211]118        operatorParameters[item.Index].Value = item.Value;
[2773]119    }
[3445]120    protected virtual void Operators_ItemsMoved(object sender, CollectionItemsChangedEventArgs<IndexedItem<T>> e) {
[3407]121      foreach (IndexedItem<T> item in e.Items)
[3211]122        operatorParameters[item.Index].Value = item.Value;
[2773]123    }
[3445]124    protected virtual void Operators_CollectionReset(object sender, CollectionItemsChangedEventArgs<IndexedItem<T>> e) {
[2773]125      UpdateOperatorParameters();
126    }
127    private void opParam_ValueChanged(object sender, EventArgs e) {
[3407]128      IValueParameter<T> opParam = (IValueParameter<T>)sender;
[3729]129      if (opParam.Value == null)
130        operators.RemoveAt(operatorParameters.IndexOf(opParam));
131      else
132        operators[operatorParameters.IndexOf(opParam)] = opParam.Value;
[2773]133    }
[3211]134    #endregion
[2773]135  }
136}
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