[2773] | 1 | #region License Information
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| 2 | /* HeuristicLab
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[2790] | 3 | * Copyright (C) 2002-2010 Heuristic and Evolutionary Algorithms Laboratory (HEAL)
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[2773] | 4 | *
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| 5 | * This file is part of HeuristicLab.
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| 6 | *
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| 7 | * HeuristicLab is free software: you can redistribute it and/or modify
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| 8 | * it under the terms of the GNU General Public License as published by
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| 9 | * the Free Software Foundation, either version 3 of the License, or
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| 10 | * (at your option) any later version.
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| 11 | *
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| 12 | * HeuristicLab is distributed in the hope that it will be useful,
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| 13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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| 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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| 15 | * GNU General Public License for more details.
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| 16 | *
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| 17 | * You should have received a copy of the GNU General Public License
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| 18 | * along with HeuristicLab. If not, see <http://www.gnu.org/licenses/>.
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| 19 | */
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| 20 | #endregion
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| 21 |
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| 22 | using System;
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[3211] | 23 | using System.Collections.Generic;
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[2773] | 24 | using HeuristicLab.Collections;
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[3376] | 25 | using HeuristicLab.Common;
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[2773] | 26 | using HeuristicLab.Core;
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| 27 | using HeuristicLab.Parameters;
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| 28 | using HeuristicLab.Persistence.Default.CompositeSerializers.Storable;
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| 29 |
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| 30 | namespace HeuristicLab.Operators {
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| 31 | /// <summary>
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[3407] | 32 | /// A base class for operators which apply arbitrary many other operators of a specific type.
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[2773] | 33 | /// </summary>
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[3822] | 34 | [Item("MultiOperator", "A base class for operators which apply arbitrary many other operators of a specific type.")]
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[3017] | 35 | [StorableClass]
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[3407] | 36 | public abstract class MultiOperator<T> : SingleSuccessorOperator where T : class, IOperator {
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| 37 | private List<IValueParameter<T>> operatorParameters;
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[2773] | 38 |
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[3317] | 39 | [Storable]
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[3591] | 40 | private IItemList<T> operators;
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| 41 | public IItemList<T> Operators {
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[2773] | 42 | get { return operators; }
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[3591] | 43 | protected set {
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| 44 | if (operators != value) {
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| 45 | if (value == null) throw new ArgumentException();
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| 46 | DeregisterOperatorsEvents();
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| 47 | operators = value;
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| 48 | RegisterOperatorsEvents();
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| 49 | }
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| 50 | }
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[2773] | 51 | }
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| 52 |
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[4722] | 53 | [StorableConstructor]
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| 54 | protected MultiOperator(bool deserializing) : base(deserializing) { }
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| 55 | protected MultiOperator(MultiOperator<T> original, Cloner cloner)
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| 56 | : base(original, cloner) {
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| 57 | this.operators = cloner.Clone<IItemList<T>>(original.operators);
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| 58 | Initialize();
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| 59 | }
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[3407] | 60 | public MultiOperator()
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[2773] | 61 | : base() {
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[3591] | 62 | this.operators = new ItemList<T>();
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[3211] | 63 | Initialize();
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[2773] | 64 | }
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[3591] | 65 |
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[3211] | 66 | [StorableHook(HookType.AfterDeserialization)]
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[4722] | 67 | private void AfterDeserialization() {
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| 68 | Initialize();
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| 69 | }
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| 70 |
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[3211] | 71 | private void Initialize() {
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[3317] | 72 | if (operators != null) RegisterOperatorsEvents();
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[3407] | 73 | operatorParameters = new List<IValueParameter<T>>();
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[3211] | 74 | for (int i = 0; i < Operators.Count; i++) {
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[3407] | 75 | IValueParameter<T> opParam = (IValueParameter<T>)Parameters[i.ToString()];
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[3211] | 76 | operatorParameters.Add(opParam);
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| 77 | opParam.ValueChanged += new EventHandler(opParam_ValueChanged);
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| 78 | }
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| 79 | }
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| 80 |
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[2773] | 81 | private void UpdateOperatorParameters() {
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[3407] | 82 | foreach (IValueParameter<T> opParam in operatorParameters) {
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[2773] | 83 | opParam.ValueChanged -= new EventHandler(opParam_ValueChanged);
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| 84 | Parameters.Remove(opParam.Name);
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| 85 | }
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[3211] | 86 | operatorParameters.Clear();
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[2773] | 87 | for (int i = 0; i < Operators.Count; i++) {
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[3729] | 88 | IValueParameter<T> opParam = new OptionalValueParameter<T>(i.ToString(), string.Empty, Operators[i]);
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[2773] | 89 | opParam.ValueChanged += new EventHandler(opParam_ValueChanged);
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| 90 | Parameters.Add(opParam);
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[3211] | 91 | operatorParameters.Add(opParam);
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[2773] | 92 | }
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| 93 | }
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[3211] | 94 |
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| 95 | #region Events
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| 96 | private void RegisterOperatorsEvents() {
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[3445] | 97 | operators.ItemsAdded += new CollectionItemsChangedEventHandler<IndexedItem<T>>(Operators_ItemsAdded);
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| 98 | operators.ItemsRemoved += new CollectionItemsChangedEventHandler<IndexedItem<T>>(Operators_ItemsRemoved);
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| 99 | operators.ItemsReplaced += new CollectionItemsChangedEventHandler<IndexedItem<T>>(Operators_ItemsReplaced);
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| 100 | operators.ItemsMoved += new CollectionItemsChangedEventHandler<IndexedItem<T>>(Operators_ItemsMoved);
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| 101 | operators.CollectionReset += new CollectionItemsChangedEventHandler<IndexedItem<T>>(Operators_CollectionReset);
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[3211] | 102 | }
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| 103 | private void DeregisterOperatorsEvents() {
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[3445] | 104 | operators.ItemsAdded -= new CollectionItemsChangedEventHandler<IndexedItem<T>>(Operators_ItemsAdded);
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| 105 | operators.ItemsRemoved -= new CollectionItemsChangedEventHandler<IndexedItem<T>>(Operators_ItemsRemoved);
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| 106 | operators.ItemsReplaced -= new CollectionItemsChangedEventHandler<IndexedItem<T>>(Operators_ItemsReplaced);
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| 107 | operators.ItemsMoved -= new CollectionItemsChangedEventHandler<IndexedItem<T>>(Operators_ItemsMoved);
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| 108 | operators.CollectionReset -= new CollectionItemsChangedEventHandler<IndexedItem<T>>(Operators_CollectionReset);
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[3211] | 109 | }
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[3445] | 110 | protected virtual void Operators_ItemsAdded(object sender, CollectionItemsChangedEventArgs<IndexedItem<T>> e) {
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[2773] | 111 | UpdateOperatorParameters();
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| 112 | }
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[3445] | 113 | protected virtual void Operators_ItemsRemoved(object sender, CollectionItemsChangedEventArgs<IndexedItem<T>> e) {
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[2773] | 114 | UpdateOperatorParameters();
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| 115 | }
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[3445] | 116 | protected virtual void Operators_ItemsReplaced(object sender, CollectionItemsChangedEventArgs<IndexedItem<T>> e) {
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[3407] | 117 | foreach (IndexedItem<T> item in e.Items)
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[3211] | 118 | operatorParameters[item.Index].Value = item.Value;
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[2773] | 119 | }
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[3445] | 120 | protected virtual void Operators_ItemsMoved(object sender, CollectionItemsChangedEventArgs<IndexedItem<T>> e) {
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[3407] | 121 | foreach (IndexedItem<T> item in e.Items)
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[3211] | 122 | operatorParameters[item.Index].Value = item.Value;
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[2773] | 123 | }
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[3445] | 124 | protected virtual void Operators_CollectionReset(object sender, CollectionItemsChangedEventArgs<IndexedItem<T>> e) {
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[2773] | 125 | UpdateOperatorParameters();
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| 126 | }
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| 127 | private void opParam_ValueChanged(object sender, EventArgs e) {
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[3407] | 128 | IValueParameter<T> opParam = (IValueParameter<T>)sender;
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[3729] | 129 | if (opParam.Value == null)
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| 130 | operators.RemoveAt(operatorParameters.IndexOf(opParam));
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| 131 | else
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| 132 | operators[operatorParameters.IndexOf(opParam)] = opParam.Value;
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[2773] | 133 | }
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[3211] | 134 | #endregion
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[2773] | 135 | }
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| 136 | }
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