[2572] | 1 | #region License Information
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| 2 | /* HeuristicLab
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[15583] | 3 | * Copyright (C) 2002-2018 Heuristic and Evolutionary Algorithms Laboratory (HEAL)
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[2572] | 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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[13597] | 22 | using HeuristicLab.Common;
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| 23 | using HeuristicLab.Persistence.Default.CompositeSerializers.Storable;
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[2572] | 24 | using System;
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| 25 | using System.Collections;
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| 26 | using System.Collections.Generic;
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[2620] | 27 | using System.ComponentModel;
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[6342] | 28 | using System.Linq;
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[2572] | 29 |
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| 30 | namespace HeuristicLab.Collections {
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[3560] | 31 | [StorableClass]
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[2572] | 32 | [Serializable]
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[2574] | 33 | public class ObservableList<T> : IObservableList<T> {
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[3560] | 34 | [Storable]
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[3286] | 35 | protected List<T> list;
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[2572] | 36 |
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| 37 | #region Properties
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| 38 | public int Capacity {
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| 39 | get { return list.Capacity; }
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[2620] | 40 | set {
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| 41 | if (list.Capacity != value) {
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| 42 | list.Capacity = value;
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| 43 | OnPropertyChanged("Capacity");
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| 44 | }
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| 45 | }
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[2572] | 46 | }
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| 47 | public int Count {
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| 48 | get { return list.Count; }
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| 49 | }
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| 50 | bool ICollection<T>.IsReadOnly {
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| 51 | get { return ((ICollection<T>)list).IsReadOnly; }
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| 52 | }
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| 53 |
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| 54 | public T this[int index] {
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| 55 | get {
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| 56 | return list[index];
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| 57 | }
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| 58 | set {
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| 59 | T item = list[index];
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[2745] | 60 | if (!((item == null) && (value == null)) && ((item == null) || (!item.Equals(value)))) {
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[2620] | 61 | list[index] = value;
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| 62 | OnItemsReplaced(new IndexedItem<T>[] { new IndexedItem<T>(index, value) }, new IndexedItem<T>[] { new IndexedItem<T>(index, item) });
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| 63 | OnPropertyChanged("Item[]");
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| 64 | }
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[2572] | 65 | }
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| 66 | }
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| 67 | #endregion
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| 68 |
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| 69 | #region Constructors
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| 70 | public ObservableList() {
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| 71 | list = new List<T>();
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| 72 | }
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| 73 | public ObservableList(int capacity) {
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| 74 | list = new List<T>(capacity);
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| 75 | }
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| 76 | public ObservableList(IEnumerable<T> collection) {
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| 77 | list = new List<T>(collection);
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| 78 | }
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[3560] | 79 | [StorableConstructor]
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| 80 | protected ObservableList(bool deserializing) { }
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[2572] | 81 | #endregion
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| 82 |
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| 83 | #region Access
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| 84 | public List<T> GetRange(int index, int count) {
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| 85 | return list.GetRange(index, count);
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| 86 | }
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| 87 |
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| 88 | public bool Contains(T item) {
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| 89 | return list.Contains(item);
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| 90 | }
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| 91 |
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| 92 | public int IndexOf(T item) {
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| 93 | return list.IndexOf(item);
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| 94 | }
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| 95 | public int IndexOf(T item, int index) {
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| 96 | return list.IndexOf(item, index);
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| 97 | }
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| 98 | public int IndexOf(T item, int index, int count) {
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| 99 | return list.IndexOf(item, index, count);
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| 100 | }
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| 101 |
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| 102 | public int LastIndexOf(T item) {
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| 103 | return list.LastIndexOf(item);
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| 104 | }
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| 105 | public int LastIndexOf(T item, int index) {
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| 106 | return list.LastIndexOf(item, index);
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| 107 | }
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| 108 | public int LastIndexOf(T item, int index, int count) {
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| 109 | return list.LastIndexOf(item, index, count);
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| 110 | }
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| 111 |
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| 112 | public int BinarySearch(T item) {
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| 113 | return list.BinarySearch(item);
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| 114 | }
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| 115 | public int BinarySearch(T item, IComparer<T> comparer) {
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| 116 | return list.BinarySearch(item, comparer);
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| 117 | }
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| 118 | public int BinarySearch(int index, int count, T item, IComparer<T> comparer) {
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| 119 | return list.BinarySearch(index, count, item, comparer);
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| 120 | }
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| 121 |
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| 122 | public bool Exists(Predicate<T> match) {
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| 123 | return list.Exists(match);
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| 124 | }
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| 125 |
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| 126 | public T Find(Predicate<T> match) {
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| 127 | return list.Find(match);
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| 128 | }
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| 129 | public List<T> FindAll(Predicate<T> match) {
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| 130 | return list.FindAll(match);
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| 131 | }
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| 132 | public T FindLast(Predicate<T> match) {
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| 133 | return list.FindLast(match);
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| 134 | }
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| 135 |
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| 136 | public int FindIndex(Predicate<T> match) {
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| 137 | return list.FindIndex(match);
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| 138 | }
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| 139 | public int FindIndex(int startIndex, Predicate<T> match) {
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| 140 | return list.FindIndex(startIndex, match);
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| 141 | }
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| 142 | public int FindIndex(int startIndex, int count, Predicate<T> match) {
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| 143 | return list.FindIndex(startIndex, count, match);
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| 144 | }
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| 145 |
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| 146 | public int FindLastIndex(Predicate<T> match) {
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| 147 | return list.FindLastIndex(match);
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| 148 | }
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| 149 | public int FindLastIndex(int startIndex, Predicate<T> match) {
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| 150 | return list.FindLastIndex(startIndex, match);
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| 151 | }
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| 152 | public int FindLastIndex(int startIndex, int count, Predicate<T> match) {
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| 153 | return list.FindLastIndex(startIndex, count, match);
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| 154 | }
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| 155 | #endregion
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| 156 |
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| 157 | #region Manipulation
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| 158 | public void Add(T item) {
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[2620] | 159 | int capacity = list.Capacity;
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[2572] | 160 | list.Add(item);
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[8610] | 161 | OnItemsAdded(new IndexedItem<T>[] { new IndexedItem<T>(list.Count - 1, item) });
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| 162 | OnItemsAdded(new T[] { item });
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[2620] | 163 | if (list.Capacity != capacity)
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| 164 | OnPropertyChanged("Capacity");
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| 165 | OnPropertyChanged("Item[]");
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| 166 | OnPropertyChanged("Count");
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[2572] | 167 | }
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| 168 | public void AddRange(IEnumerable<T> collection) {
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[2620] | 169 | int capacity = list.Capacity;
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[2572] | 170 | int index = list.Count;
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| 171 | List<IndexedItem<T>> items = new List<IndexedItem<T>>();
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| 172 | foreach (T item in collection) {
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| 173 | items.Add(new IndexedItem<T>(index, item));
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| 174 | index++;
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| 175 | }
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[13597] | 176 | list.AddRange(items.Select(x => x.Value));
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[2620] | 177 | if (items.Count > 0) {
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[8610] | 178 | OnItemsAdded(items);
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[13597] | 179 | OnItemsAdded(items.Select(x => x.Value));
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[2620] | 180 | if (list.Capacity != capacity)
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| 181 | OnPropertyChanged("Capacity");
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| 182 | OnPropertyChanged("Item[]");
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| 183 | OnPropertyChanged("Count");
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| 184 | }
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[2572] | 185 | }
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| 186 |
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| 187 | public void Insert(int index, T item) {
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[2620] | 188 | int capacity = list.Capacity;
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[2572] | 189 | list.Insert(index, item);
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[8610] | 190 | OnItemsAdded(new IndexedItem<T>[] { new IndexedItem<T>(index, item) });
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| 191 | OnItemsAdded(new T[] { item });
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[2620] | 192 | if (list.Capacity != capacity)
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| 193 | OnPropertyChanged("Capacity");
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| 194 | OnPropertyChanged("Item[]");
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| 195 | OnPropertyChanged("Count");
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[2572] | 196 | }
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| 197 | public void InsertRange(int index, IEnumerable<T> collection) {
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[2620] | 198 | int capacity = list.Capacity;
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[2572] | 199 | list.InsertRange(index, collection);
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| 200 | List<IndexedItem<T>> items = new List<IndexedItem<T>>();
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| 201 | foreach (T item in collection) {
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| 202 | items.Add(new IndexedItem<T>(index, item));
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| 203 | index++;
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| 204 | }
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[2620] | 205 | if (items.Count > 0) {
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[8610] | 206 | OnItemsAdded(items);
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| 207 | OnItemsAdded(collection);
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[2620] | 208 | if (list.Capacity != capacity)
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| 209 | OnPropertyChanged("Capacity");
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| 210 | OnPropertyChanged("Item[]");
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| 211 | OnPropertyChanged("Count");
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| 212 | }
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[2572] | 213 | }
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| 214 |
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[6342] | 215 | /// <summary>
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| 216 | /// Performs a Clear and an AddRange, but does not fire separate events for those operations
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| 217 | /// </summary>
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| 218 | /// <param name="collection"></param>
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| 219 | public void Replace(IEnumerable<T> collection) {
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| 220 | List<IndexedItem<T>> oldItems = null;
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| 221 | if (list.Any()) oldItems = list.Select((x, i) => new IndexedItem<T>(i, x)).ToList();
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| 222 | else oldItems = new List<IndexedItem<T>>();
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| 223 |
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| 224 | int oldCapacity = list.Capacity;
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| 225 | list.Clear();
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| 226 | list.AddRange(collection);
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| 227 |
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| 228 | List<IndexedItem<T>> items = null;
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| 229 | if (list.Any()) items = list.Select((x, i) => new IndexedItem<T>(i, x)).ToList();
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| 230 | else items = new List<IndexedItem<T>>();
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| 231 |
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[8610] | 232 | OnItemsReplaced(items, oldItems);
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[6342] | 233 | if (oldCapacity != list.Capacity) OnPropertyChanged("Capacity");
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| 234 | OnPropertyChanged("Item[]");
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| 235 | if (oldItems.Count != items.Count) OnPropertyChanged("Count");
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| 236 | }
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| 237 |
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[2572] | 238 | public bool Remove(T item) {
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| 239 | int index = list.IndexOf(item);
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| 240 | if (index != -1) {
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| 241 | list.RemoveAt(index);
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[8610] | 242 | OnItemsRemoved(new IndexedItem<T>[] { new IndexedItem<T>(index, item) });
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| 243 | OnItemsRemoved(new T[] { item });
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[2620] | 244 | OnPropertyChanged("Item[]");
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| 245 | OnPropertyChanged("Count");
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[2572] | 246 | return true;
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| 247 | }
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| 248 | return false;
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| 249 | }
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| 250 | public int RemoveAll(Predicate<T> match) {
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[2573] | 251 | if (match == null) throw new ArgumentNullException();
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[2623] | 252 | List<IndexedItem<T>> indexedItems = new List<IndexedItem<T>>();
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| 253 | List<T> items = new List<T>();
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[2572] | 254 | for (int i = 0; i < list.Count; i++) {
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[2623] | 255 | if (match(list[i])) {
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| 256 | indexedItems.Add(new IndexedItem<T>(i, list[i]));
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| 257 | items.Add(list[i]);
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| 258 | }
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[2572] | 259 | }
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[2620] | 260 | int result = 0;
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[2623] | 261 | if (indexedItems.Count > 0) {
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[2620] | 262 | result = list.RemoveAll(match);
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[8610] | 263 | OnItemsRemoved(indexedItems);
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| 264 | OnItemsRemoved(items);
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[2620] | 265 | OnPropertyChanged("Item[]");
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| 266 | OnPropertyChanged("Count");
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| 267 | }
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[2572] | 268 | return result;
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| 269 | }
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| 270 | public void RemoveAt(int index) {
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| 271 | T item = list[index];
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| 272 | list.RemoveAt(index);
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[8610] | 273 | OnItemsRemoved(new IndexedItem<T>[] { new IndexedItem<T>(index, item) });
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| 274 | OnItemsRemoved(new T[] { item });
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[2620] | 275 | OnPropertyChanged("Item[]");
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| 276 | OnPropertyChanged("Count");
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[2572] | 277 | }
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| 278 | public void RemoveRange(int index, int count) {
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[2620] | 279 | if (count > 0) {
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[2623] | 280 | IndexedItem<T>[] indexedItems = GetIndexedItems(index, count);
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| 281 | T[] items = new T[count];
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| 282 | list.CopyTo(index, items, 0, count);
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[2620] | 283 | list.RemoveRange(index, count);
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[8610] | 284 | OnItemsRemoved(indexedItems);
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| 285 | OnItemsRemoved(items);
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[2620] | 286 | OnPropertyChanged("Item[]");
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| 287 | OnPropertyChanged("Count");
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| 288 | }
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[2572] | 289 | }
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| 290 |
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| 291 | public void Clear() {
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[2620] | 292 | if (list.Count > 0) {
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[2623] | 293 | IndexedItem<T>[] indexedItems = GetIndexedItems();
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| 294 | T[] items = list.ToArray();
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[2620] | 295 | list.Clear();
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[8610] | 296 | OnCollectionReset(new IndexedItem<T>[0], indexedItems);
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| 297 | OnCollectionReset(new T[0], items);
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[2620] | 298 | OnPropertyChanged("Item[]");
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| 299 | OnPropertyChanged("Count");
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| 300 | }
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[2572] | 301 | }
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| 302 |
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| 303 | public void Reverse() {
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[2620] | 304 | if (list.Count > 1) {
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| 305 | IndexedItem<T>[] oldItems = GetIndexedItems();
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| 306 | list.Reverse();
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[8610] | 307 | OnItemsMoved(GetIndexedItems(), oldItems);
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[2620] | 308 | OnPropertyChanged("Item[]");
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| 309 | }
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[2572] | 310 | }
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| 311 | public void Reverse(int index, int count) {
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[2620] | 312 | if (count > 1) {
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| 313 | IndexedItem<T>[] oldItems = GetIndexedItems(index, count);
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| 314 | list.Reverse(index, count);
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[8610] | 315 | OnItemsMoved(GetIndexedItems(index, count), oldItems);
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[2620] | 316 | OnPropertyChanged("Item[]");
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| 317 | }
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[2572] | 318 | }
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| 319 |
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| 320 | public void Sort() {
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[2620] | 321 | if (list.Count > 1) {
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| 322 | IndexedItem<T>[] oldItems = GetIndexedItems();
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[10324] | 323 | list.StableSort();
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[8610] | 324 | OnItemsMoved(GetIndexedItems(), oldItems);
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[2620] | 325 | OnPropertyChanged("Item[]");
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| 326 | }
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[2572] | 327 | }
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| 328 | public void Sort(Comparison<T> comparison) {
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[2620] | 329 | if (list.Count > 1) {
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| 330 | IndexedItem<T>[] oldItems = GetIndexedItems();
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[10324] | 331 | list.StableSort(comparison);
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[8610] | 332 | OnItemsMoved(GetIndexedItems(), oldItems);
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[2620] | 333 | OnPropertyChanged("Item[]");
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| 334 | }
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[2572] | 335 | }
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| 336 | public void Sort(IComparer<T> comparer) {
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[2620] | 337 | if (list.Count > 1) {
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| 338 | IndexedItem<T>[] oldItems = GetIndexedItems();
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[10324] | 339 | list.StableSort(comparer);
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[8610] | 340 | OnItemsMoved(GetIndexedItems(), oldItems);
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[2620] | 341 | OnPropertyChanged("Item[]");
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| 342 | }
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[2572] | 343 | }
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| 344 | public void Sort(int index, int count, IComparer<T> comparer) {
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[2745] | 345 | if (count > 1) {
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[2620] | 346 | IndexedItem<T>[] oldItems = GetIndexedItems(index, count);
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[10324] | 347 | list.StableSort(index, count, comparer);
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[8610] | 348 | OnItemsMoved(GetIndexedItems(index, count), oldItems);
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[2620] | 349 | OnPropertyChanged("Item[]");
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| 350 | }
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[2572] | 351 | }
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| 352 | #endregion
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| 353 |
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| 354 | #region Conversion
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[2618] | 355 | public ReadOnlyObservableList<T> AsReadOnly() {
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| 356 | return new ReadOnlyObservableList<T>(this);
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[2572] | 357 | }
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[8610] | 358 |
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[2572] | 359 | public T[] ToArray() {
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| 360 | return list.ToArray();
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| 361 | }
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[2623] | 362 | public void CopyTo(T[] array) {
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| 363 | list.CopyTo(array);
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| 364 | }
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| 365 | public void CopyTo(T[] array, int arrayIndex) {
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[2572] | 366 | list.CopyTo(array, arrayIndex);
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| 367 | }
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[2623] | 368 | public void CopyTo(int index, T[] array, int arrayIndex, int count) {
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| 369 | list.CopyTo(index, array, arrayIndex, count);
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| 370 | }
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[2572] | 371 | public List<TOutput> ConvertAll<TOutput>(Converter<T, TOutput> converter) {
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| 372 | return list.ConvertAll<TOutput>(converter);
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| 373 | }
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| 374 | #endregion
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| 375 |
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| 376 | #region Processing
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| 377 | public void ForEach(Action<T> action) {
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| 378 | list.ForEach(action);
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| 379 | }
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| 380 | public bool TrueForAll(Predicate<T> match) {
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| 381 | return list.TrueForAll(match);
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| 382 | }
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| 383 | #endregion
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| 384 |
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| 385 | #region Enumeration
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[2623] | 386 | public IEnumerator<T> GetEnumerator() {
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[2572] | 387 | return list.GetEnumerator();
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| 388 | }
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| 389 | IEnumerator IEnumerable.GetEnumerator() {
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[2623] | 390 | return list.GetEnumerator();
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[2572] | 391 | }
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| 392 | #endregion
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| 393 |
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| 394 | #region Helpers
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| 395 | public void TrimExcess() {
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[2620] | 396 | int capacity = list.Capacity;
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[2572] | 397 | list.TrimExcess();
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[2620] | 398 | if (list.Capacity != capacity)
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| 399 | OnPropertyChanged("Capacity");
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[2572] | 400 | }
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| 401 | #endregion
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| 402 |
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[2574] | 403 | #region Events
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| 404 | [field: NonSerialized]
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| 405 | public event CollectionItemsChangedEventHandler<IndexedItem<T>> ItemsAdded;
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| 406 | protected virtual void OnItemsAdded(IEnumerable<IndexedItem<T>> items) {
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[3317] | 407 | CollectionItemsChangedEventHandler<IndexedItem<T>> handler = ItemsAdded;
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| 408 | if (handler != null) handler(this, new CollectionItemsChangedEventArgs<IndexedItem<T>>(items));
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[2574] | 409 | }
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| 410 |
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| 411 | [field: NonSerialized]
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[2623] | 412 | private event CollectionItemsChangedEventHandler<T> itemsAdded;
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[2832] | 413 | event CollectionItemsChangedEventHandler<T> INotifyObservableCollectionItemsChanged<T>.ItemsAdded {
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[2623] | 414 | add { itemsAdded += value; }
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| 415 | remove { itemsAdded -= value; }
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| 416 | }
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| 417 | private void OnItemsAdded(IEnumerable<T> items) {
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[3317] | 418 | CollectionItemsChangedEventHandler<T> handler = itemsAdded;
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| 419 | if (handler != null) handler(this, new CollectionItemsChangedEventArgs<T>(items));
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[2623] | 420 | }
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| 421 |
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| 422 | [field: NonSerialized]
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[2574] | 423 | public event CollectionItemsChangedEventHandler<IndexedItem<T>> ItemsRemoved;
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| 424 | protected virtual void OnItemsRemoved(IEnumerable<IndexedItem<T>> items) {
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[3317] | 425 | CollectionItemsChangedEventHandler<IndexedItem<T>> handler = ItemsRemoved;
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| 426 | if (handler != null) handler(this, new CollectionItemsChangedEventArgs<IndexedItem<T>>(items));
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[2574] | 427 | }
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| 428 |
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| 429 | [field: NonSerialized]
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[2623] | 430 | private event CollectionItemsChangedEventHandler<T> itemsRemoved;
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[2832] | 431 | event CollectionItemsChangedEventHandler<T> INotifyObservableCollectionItemsChanged<T>.ItemsRemoved {
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[2623] | 432 | add { itemsRemoved += value; }
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| 433 | remove { itemsRemoved -= value; }
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| 434 | }
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| 435 | private void OnItemsRemoved(IEnumerable<T> items) {
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[3317] | 436 | CollectionItemsChangedEventHandler<T> handler = itemsRemoved;
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| 437 | if (handler != null) handler(this, new CollectionItemsChangedEventArgs<T>(items));
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[2623] | 438 | }
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| 439 |
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| 440 | [field: NonSerialized]
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[2574] | 441 | public event CollectionItemsChangedEventHandler<IndexedItem<T>> ItemsReplaced;
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| 442 | protected virtual void OnItemsReplaced(IEnumerable<IndexedItem<T>> items, IEnumerable<IndexedItem<T>> oldItems) {
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[3317] | 443 | CollectionItemsChangedEventHandler<IndexedItem<T>> handler = ItemsReplaced;
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| 444 | if (handler != null) handler(this, new CollectionItemsChangedEventArgs<IndexedItem<T>>(items, oldItems));
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[2574] | 445 | }
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| 446 |
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| 447 | [field: NonSerialized]
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| 448 | public event CollectionItemsChangedEventHandler<IndexedItem<T>> ItemsMoved;
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| 449 | protected virtual void OnItemsMoved(IEnumerable<IndexedItem<T>> items, IEnumerable<IndexedItem<T>> oldItems) {
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[3317] | 450 | CollectionItemsChangedEventHandler<IndexedItem<T>> handler = ItemsMoved;
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| 451 | if (handler != null) handler(this, new CollectionItemsChangedEventArgs<IndexedItem<T>>(items, oldItems));
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[2574] | 452 | }
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| 453 |
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| 454 | [field: NonSerialized]
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| 455 | public event CollectionItemsChangedEventHandler<IndexedItem<T>> CollectionReset;
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| 456 | protected virtual void OnCollectionReset(IEnumerable<IndexedItem<T>> items, IEnumerable<IndexedItem<T>> oldItems) {
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[3317] | 457 | CollectionItemsChangedEventHandler<IndexedItem<T>> handler = CollectionReset;
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| 458 | if (handler != null) handler(this, new CollectionItemsChangedEventArgs<IndexedItem<T>>(items, oldItems));
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[2574] | 459 | }
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[2620] | 460 |
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| 461 | [field: NonSerialized]
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[2623] | 462 | private event CollectionItemsChangedEventHandler<T> collectionReset;
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[2832] | 463 | event CollectionItemsChangedEventHandler<T> INotifyObservableCollectionItemsChanged<T>.CollectionReset {
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[2623] | 464 | add { collectionReset += value; }
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| 465 | remove { collectionReset -= value; }
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| 466 | }
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| 467 | private void OnCollectionReset(IEnumerable<T> items, IEnumerable<T> oldItems) {
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[3317] | 468 | CollectionItemsChangedEventHandler<T> handler = collectionReset;
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| 469 | if (handler != null) handler(this, new CollectionItemsChangedEventArgs<T>(items, oldItems));
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[2623] | 470 | }
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| 471 |
|
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| 472 | [field: NonSerialized]
|
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[2620] | 473 | public event PropertyChangedEventHandler PropertyChanged;
|
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| 474 | protected virtual void OnPropertyChanged(string propertyName) {
|
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[3317] | 475 | PropertyChangedEventHandler handler = PropertyChanged;
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| 476 | if (handler != null) handler(this, new PropertyChangedEventArgs(propertyName));
|
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[2620] | 477 | }
|
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[2574] | 478 | #endregion
|
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| 479 |
|
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[2572] | 480 | #region Private helpers
|
---|
| 481 | private IndexedItem<T>[] GetIndexedItems() {
|
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| 482 | IndexedItem<T>[] items = new IndexedItem<T>[list.Count];
|
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| 483 | for (int i = 0; i < list.Count; i++)
|
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| 484 | items[i] = new IndexedItem<T>(i, list[i]);
|
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| 485 | return items;
|
---|
| 486 | }
|
---|
| 487 | private IndexedItem<T>[] GetIndexedItems(int index, int count) {
|
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| 488 | IndexedItem<T>[] items = new IndexedItem<T>[count];
|
---|
| 489 | for (int i = 0; i < count; i++)
|
---|
| 490 | items[i] = new IndexedItem<T>(index + i, list[index + i]);
|
---|
| 491 | return items;
|
---|
| 492 | }
|
---|
| 493 | #endregion
|
---|
| 494 | }
|
---|
| 495 | }
|
---|