[2623] | 1 | #region License Information
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| 2 | /* HeuristicLab
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[11185] | 3 | * Copyright (C) 2002-2014 Heuristic and Evolutionary Algorithms Laboratory (HEAL)
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[2623] | 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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| 23 | using System.Collections;
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| 24 | using System.Collections.Generic;
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| 25 | using System.ComponentModel;
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| 26 | using System.Linq;
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[3560] | 27 | using HeuristicLab.Persistence.Default.CompositeSerializers.Storable;
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[2623] | 28 |
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| 29 | namespace HeuristicLab.Collections {
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[3560] | 30 | [StorableClass]
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[2623] | 31 | [Serializable]
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| 32 | public class ObservableSet<T> : IObservableSet<T> {
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[3560] | 33 | [Storable]
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[3286] | 34 | protected HashSet<T> set;
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[2623] | 35 |
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| 36 | #region Properties
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| 37 | public IEqualityComparer<T> Comparer {
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| 38 | get { return set.Comparer; }
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| 39 | }
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| 40 | public int Count {
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| 41 | get { return set.Count; }
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| 42 | }
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| 43 | bool ICollection<T>.IsReadOnly {
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| 44 | get { return ((ICollection<T>)set).IsReadOnly; }
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| 45 | }
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| 46 | #endregion
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| 47 |
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| 48 | #region Constructors
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| 49 | public ObservableSet() {
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| 50 | set = new HashSet<T>();
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| 51 | }
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| 52 | public ObservableSet(IEnumerable<T> collection) {
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| 53 | set = new HashSet<T>(collection);
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| 54 | }
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| 55 | public ObservableSet(IEqualityComparer<T> comparer) {
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| 56 | set = new HashSet<T>(comparer);
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| 57 | }
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| 58 | public ObservableSet(IEnumerable<T> collection, IEqualityComparer<T> comparer) {
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| 59 | set = new HashSet<T>(collection, comparer);
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| 60 | }
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[3560] | 61 | [StorableConstructor]
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| 62 | protected ObservableSet(bool deserializing) { }
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[2623] | 63 | #endregion
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| 64 |
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| 65 | #region Access
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| 66 | public bool Contains(T item) {
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| 67 | return set.Contains(item);
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| 68 | }
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| 69 |
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| 70 | public bool IsProperSubsetOf(IEnumerable<T> other) {
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| 71 | return set.IsProperSubsetOf(other);
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| 72 | }
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| 73 | public bool IsProperSupersetOf(IEnumerable<T> other) {
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| 74 | return set.IsProperSupersetOf(other);
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| 75 | }
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| 76 |
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| 77 | public bool IsSubsetOf(IEnumerable<T> other) {
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| 78 | return set.IsSubsetOf(other);
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| 79 | }
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| 80 | public bool IsSupersetOf(IEnumerable<T> other) {
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| 81 | return set.IsSupersetOf(other);
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| 82 | }
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| 83 |
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| 84 | public bool Overlaps(IEnumerable<T> other) {
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| 85 | return set.Overlaps(other);
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| 86 | }
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| 87 |
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| 88 | public bool SetEquals(IEnumerable<T> other) {
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| 89 | return set.SetEquals(other);
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| 90 | }
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| 91 | #endregion
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| 92 |
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| 93 | #region Manipulation
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| 94 | public bool Add(T item) {
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| 95 | if (set.Add(item)) {
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| 96 | OnPropertyChanged("Count");
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| 97 | OnItemsAdded(new T[] { item });
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| 98 | return true;
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| 99 | }
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| 100 | return false;
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| 101 | }
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| 102 | void ICollection<T>.Add(T item) {
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| 103 | Add(item);
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| 104 | }
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| 105 |
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| 106 | public void ExceptWith(IEnumerable<T> other) {
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| 107 | if (other == null) throw new ArgumentNullException();
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| 108 | List<T> items = new List<T>();
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| 109 | foreach (T item in other) {
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| 110 | if (set.Remove(item))
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| 111 | items.Add(item);
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| 112 | }
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| 113 | if (items.Count > 0) {
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| 114 | OnPropertyChanged("Count");
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| 115 | OnItemsRemoved(items);
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| 116 | }
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| 117 | }
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| 118 |
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| 119 | public void IntersectWith(IEnumerable<T> other) {
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| 120 | if (other == null) throw new ArgumentNullException();
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| 121 | HashSet<T> items = new HashSet<T>();
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| 122 | foreach (T item in set) {
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| 123 | if (!other.Contains(item)) items.Add(item);
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| 124 | }
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| 125 | if (items.Count > 0) {
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| 126 | set.ExceptWith(items);
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| 127 | OnPropertyChanged("Count");
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| 128 | OnItemsRemoved(items);
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| 129 | }
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| 130 | }
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| 131 |
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| 132 | public bool Remove(T item) {
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| 133 | if (set.Remove(item)) {
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| 134 | OnPropertyChanged("Count");
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| 135 | OnItemsRemoved(new T[] { item });
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| 136 | return true;
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| 137 | }
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| 138 | return false;
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| 139 | }
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| 140 | public int RemoveWhere(Predicate<T> match) {
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| 141 | if (match == null) throw new ArgumentNullException();
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| 142 | HashSet<T> items = new HashSet<T>();
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| 143 | foreach (T item in set) {
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| 144 | if (match(item)) items.Add(item);
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| 145 | }
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| 146 | if (items.Count > 0) {
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| 147 | set.ExceptWith(items);
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| 148 | OnPropertyChanged("Count");
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| 149 | OnItemsRemoved(items);
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| 150 | }
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| 151 | return items.Count;
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| 152 | }
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| 153 |
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| 154 | public void SymmetricExceptWith(IEnumerable<T> other) {
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| 155 | if (other == null) throw new ArgumentNullException();
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| 156 | List<T> addedItems = new List<T>();
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| 157 | List<T> removedItems = new List<T>();
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| 158 | foreach (T item in other) {
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| 159 | if (set.Contains(item)) {
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| 160 | set.Remove(item);
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| 161 | removedItems.Add(item);
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| 162 | } else {
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| 163 | set.Add(item);
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| 164 | addedItems.Add(item);
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| 165 | }
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| 166 | }
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| 167 | if ((addedItems.Count > 0) || (removedItems.Count > 0)) {
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| 168 | OnPropertyChanged("Count");
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| 169 | if (addedItems.Count > 0) OnItemsAdded(addedItems);
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| 170 | if (removedItems.Count > 0) OnItemsRemoved(removedItems);
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| 171 | }
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| 172 | }
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| 173 |
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| 174 | public void UnionWith(IEnumerable<T> other) {
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| 175 | if (other == null) throw new ArgumentNullException();
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| 176 | List<T> items = new List<T>();
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| 177 | foreach (T item in other) {
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| 178 | if (set.Add(item)) {
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| 179 | items.Add(item);
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| 180 | }
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| 181 | }
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| 182 | if (items.Count > 0) {
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| 183 | OnPropertyChanged("Count");
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| 184 | OnItemsAdded(items);
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| 185 | }
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| 186 | }
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| 187 |
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| 188 | public void Clear() {
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| 189 | if (set.Count > 0) {
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| 190 | T[] items = new T[set.Count];
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| 191 | set.CopyTo(items);
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| 192 | set.Clear();
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| 193 | OnPropertyChanged("Count");
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| 194 | OnCollectionReset(new T[0], items);
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| 195 | }
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| 196 | }
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| 197 | #endregion
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| 198 |
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| 199 | #region Conversion
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| 200 | public ReadOnlyObservableSet<T> AsReadOnly() {
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| 201 | return new ReadOnlyObservableSet<T>(this);
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| 202 | }
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| 203 | public void CopyTo(T[] array) {
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| 204 | set.CopyTo(array);
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| 205 | }
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| 206 | public void CopyTo(T[] array, int arrayIndex) {
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| 207 | set.CopyTo(array, arrayIndex);
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| 208 | }
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| 209 | public void CopyTo(T[] array, int arrayIndex, int count) {
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| 210 | set.CopyTo(array, arrayIndex, count);
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| 211 | }
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| 212 | #endregion
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| 213 |
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| 214 | #region Enumeration
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| 215 | public IEnumerator<T> GetEnumerator() {
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| 216 | return set.GetEnumerator();
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| 217 | }
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| 218 | IEnumerator IEnumerable.GetEnumerator() {
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| 219 | return set.GetEnumerator();
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| 220 | }
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| 221 | #endregion
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| 222 |
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| 223 | #region Helpers
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| 224 | public void TrimExcess() {
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| 225 | set.TrimExcess();
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| 226 | }
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| 227 | #endregion
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| 228 |
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| 229 | #region Events
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| 230 | [field: NonSerialized]
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| 231 | public event CollectionItemsChangedEventHandler<T> ItemsAdded;
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| 232 | protected virtual void OnItemsAdded(IEnumerable<T> items) {
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[3317] | 233 | CollectionItemsChangedEventHandler<T> handler = ItemsAdded;
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| 234 | if (handler != null) handler(this, new CollectionItemsChangedEventArgs<T>(items));
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[2623] | 235 | }
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| 236 |
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| 237 | [field: NonSerialized]
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| 238 | public event CollectionItemsChangedEventHandler<T> ItemsRemoved;
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| 239 | protected virtual void OnItemsRemoved(IEnumerable<T> items) {
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[3317] | 240 | CollectionItemsChangedEventHandler<T> handler = ItemsRemoved;
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| 241 | if (handler != null) handler(this, new CollectionItemsChangedEventArgs<T>(items));
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[2623] | 242 | }
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| 243 |
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| 244 | [field: NonSerialized]
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| 245 | public event CollectionItemsChangedEventHandler<T> CollectionReset;
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| 246 | protected virtual void OnCollectionReset(IEnumerable<T> items, IEnumerable<T> oldItems) {
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[3317] | 247 | CollectionItemsChangedEventHandler<T> handler = CollectionReset;
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| 248 | if (handler != null) handler(this, new CollectionItemsChangedEventArgs<T>(items, oldItems));
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[2623] | 249 | }
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| 250 |
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| 251 | [field: NonSerialized]
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| 252 | public event PropertyChangedEventHandler PropertyChanged;
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| 253 | protected virtual void OnPropertyChanged(string propertyName) {
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[3317] | 254 | PropertyChangedEventHandler handler = PropertyChanged;
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| 255 | if (handler != null) handler(this, new PropertyChangedEventArgs(propertyName));
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[2623] | 256 | }
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| 257 | #endregion
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| 258 | }
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| 259 | }
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