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source: trunk/sources/HeuristicLab.Operators/3.3/MultiOperator.cs @ 14927

Last change on this file since 14927 was 14185, checked in by swagner, 8 years ago

#2526: Updated year of copyrights in license headers

File size: 6.1 KB
RevLine 
[2773]1#region License Information
2/* HeuristicLab
[14185]3 * Copyright (C) 2002-2016 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
[9838]22using System;
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]
[10295]36  public abstract class MultiOperator<T> : InstrumentedOperator, IMultiOperator<T> where T : class, IOperator {
[3407]37    private List<IValueParameter<T>> operatorParameters;
[9838]38    protected IEnumerable<IValueParameter<T>> OperatorParameters { get { return operatorParameters; } }
[2773]39
[3317]40    [Storable]
[3591]41    private IItemList<T> operators;
42    public IItemList<T> Operators {
[2773]43      get { return operators; }
[3591]44      protected set {
45        if (operators != value) {
46          if (value == null) throw new ArgumentException();
47          DeregisterOperatorsEvents();
48          operators = value;
49          RegisterOperatorsEvents();
[9216]50          UpdateOperatorParameters();
[3591]51        }
52      }
[2773]53    }
54
[4722]55    [StorableConstructor]
56    protected MultiOperator(bool deserializing) : base(deserializing) { }
57    protected MultiOperator(MultiOperator<T> original, Cloner cloner)
58      : base(original, cloner) {
59      this.operators = cloner.Clone<IItemList<T>>(original.operators);
60      Initialize();
61    }
[3407]62    public MultiOperator()
[2773]63      : base() {
[3591]64      this.operators = new ItemList<T>();
[3211]65      Initialize();
[2773]66    }
[3591]67
[3211]68    [StorableHook(HookType.AfterDeserialization)]
[4722]69    private void AfterDeserialization() {
70      Initialize();
71    }
[5080]72
[3211]73    private void Initialize() {
[3317]74      if (operators != null) RegisterOperatorsEvents();
[3407]75      operatorParameters = new List<IValueParameter<T>>();
[3211]76      for (int i = 0; i < Operators.Count; i++) {
[3407]77        IValueParameter<T> opParam = (IValueParameter<T>)Parameters[i.ToString()];
[3211]78        operatorParameters.Add(opParam);
79        opParam.ValueChanged += new EventHandler(opParam_ValueChanged);
80      }
81    }
82
[2773]83    private void UpdateOperatorParameters() {
[3407]84      foreach (IValueParameter<T> opParam in operatorParameters) {
[2773]85        opParam.ValueChanged -= new EventHandler(opParam_ValueChanged);
86        Parameters.Remove(opParam.Name);
87      }
[3211]88      operatorParameters.Clear();
[2773]89      for (int i = 0; i < Operators.Count; i++) {
[3729]90        IValueParameter<T> opParam = new OptionalValueParameter<T>(i.ToString(), string.Empty, Operators[i]);
[6051]91        opParam.Hidden = true;
[2773]92        opParam.ValueChanged += new EventHandler(opParam_ValueChanged);
93        Parameters.Add(opParam);
[3211]94        operatorParameters.Add(opParam);
[2773]95      }
96    }
[3211]97
98    #region Events
99    private void RegisterOperatorsEvents() {
[3445]100      operators.ItemsAdded += new CollectionItemsChangedEventHandler<IndexedItem<T>>(Operators_ItemsAdded);
101      operators.ItemsRemoved += new CollectionItemsChangedEventHandler<IndexedItem<T>>(Operators_ItemsRemoved);
102      operators.ItemsReplaced += new CollectionItemsChangedEventHandler<IndexedItem<T>>(Operators_ItemsReplaced);
103      operators.ItemsMoved += new CollectionItemsChangedEventHandler<IndexedItem<T>>(Operators_ItemsMoved);
104      operators.CollectionReset += new CollectionItemsChangedEventHandler<IndexedItem<T>>(Operators_CollectionReset);
[3211]105    }
106    private void DeregisterOperatorsEvents() {
[3445]107      operators.ItemsAdded -= new CollectionItemsChangedEventHandler<IndexedItem<T>>(Operators_ItemsAdded);
108      operators.ItemsRemoved -= new CollectionItemsChangedEventHandler<IndexedItem<T>>(Operators_ItemsRemoved);
109      operators.ItemsReplaced -= new CollectionItemsChangedEventHandler<IndexedItem<T>>(Operators_ItemsReplaced);
110      operators.ItemsMoved -= new CollectionItemsChangedEventHandler<IndexedItem<T>>(Operators_ItemsMoved);
111      operators.CollectionReset -= new CollectionItemsChangedEventHandler<IndexedItem<T>>(Operators_CollectionReset);
[3211]112    }
[3445]113    protected virtual void Operators_ItemsAdded(object sender, CollectionItemsChangedEventArgs<IndexedItem<T>> e) {
[2773]114      UpdateOperatorParameters();
115    }
[3445]116    protected virtual void Operators_ItemsRemoved(object sender, CollectionItemsChangedEventArgs<IndexedItem<T>> e) {
[2773]117      UpdateOperatorParameters();
118    }
[3445]119    protected virtual void Operators_ItemsReplaced(object sender, CollectionItemsChangedEventArgs<IndexedItem<T>> e) {
[3407]120      foreach (IndexedItem<T> item in e.Items)
[3211]121        operatorParameters[item.Index].Value = item.Value;
[2773]122    }
[3445]123    protected virtual void Operators_ItemsMoved(object sender, CollectionItemsChangedEventArgs<IndexedItem<T>> e) {
[3407]124      foreach (IndexedItem<T> item in e.Items)
[3211]125        operatorParameters[item.Index].Value = item.Value;
[2773]126    }
[3445]127    protected virtual void Operators_CollectionReset(object sender, CollectionItemsChangedEventArgs<IndexedItem<T>> e) {
[2773]128      UpdateOperatorParameters();
129    }
130    private void opParam_ValueChanged(object sender, EventArgs e) {
[3407]131      IValueParameter<T> opParam = (IValueParameter<T>)sender;
[3729]132      if (opParam.Value == null)
133        operators.RemoveAt(operatorParameters.IndexOf(opParam));
134      else
135        operators[operatorParameters.IndexOf(opParam)] = opParam.Value;
[2773]136    }
[3211]137    #endregion
[2773]138  }
139}
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