1 | #region License Information
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2 | /* HeuristicLab
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3 | * Copyright (C) 2002-2008 Heuristic and Evolutionary Algorithms Laboratory (HEAL)
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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.Collections.ObjectModel;
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26 | using System.Linq;
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27 | using System.Text;
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28 | using HeuristicLab.Persistence.Default.CompositeSerializers.Storable;
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29 |
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30 | namespace HeuristicLab.Collections {
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31 | [Serializable]
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32 | public abstract class ObservableKeyedCollectionBase<TKey, TItem> : CollectionChangedEventsBase<TItem>, ICollection<TItem> {
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33 | [Storable]
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34 | private Dictionary<TKey, TItem> dict;
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35 |
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36 | #region Properties
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37 | public int Count {
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38 | get { return dict.Count; }
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39 | }
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40 | public IEqualityComparer<TKey> Comparer {
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41 | get { return dict.Comparer; }
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42 | }
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43 | public bool IsReadOnly {
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44 | get { return ((ICollection<KeyValuePair<TKey, TItem>>)dict).IsReadOnly; }
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45 | }
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46 |
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47 | public TItem this[TKey key] {
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48 | get {
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49 | return dict[key];
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50 | }
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51 | }
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52 | #endregion
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53 |
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54 | #region Constructors
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55 | protected ObservableKeyedCollectionBase() {
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56 | dict = new Dictionary<TKey, TItem>();
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57 | }
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58 | protected ObservableKeyedCollectionBase(int capacity) {
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59 | dict = new Dictionary<TKey, TItem>(capacity);
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60 | }
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61 | protected ObservableKeyedCollectionBase(IEqualityComparer<TKey> comparer) {
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62 | dict = new Dictionary<TKey, TItem>(comparer);
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63 | }
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64 | protected ObservableKeyedCollectionBase(IEnumerable<TItem> collection) {
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65 | if (collection == null) throw new ArgumentNullException();
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66 | dict = new Dictionary<TKey, TItem>();
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67 | foreach (TItem item in collection)
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68 | AddItem(item);
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69 | }
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70 | protected ObservableKeyedCollectionBase(int capacity, IEqualityComparer<TKey> comparer) {
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71 | dict = new Dictionary<TKey, TItem>(capacity, comparer);
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72 | }
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73 | protected ObservableKeyedCollectionBase(IEnumerable<TItem> collection, IEqualityComparer<TKey> comparer) {
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74 | if (collection == null) throw new ArgumentNullException();
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75 | dict = new Dictionary<TKey, TItem>(comparer);
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76 | foreach (TItem item in collection)
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77 | AddItem(item);
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78 | }
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79 | #endregion
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80 |
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81 | protected abstract TKey GetKeyForItem(TItem item);
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82 | protected void UpdateItemKey(TItem item) {
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83 | if (item == null) throw new ArgumentNullException();
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84 | TKey oldKey = default(TKey);
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85 | bool oldKeyFound = false;
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86 | foreach (KeyValuePair<TKey, TItem> entry in dict) {
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87 | if (entry.Value.Equals(item)) {
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88 | oldKey = entry.Key;
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89 | oldKeyFound = true;
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90 | break;
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91 | }
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92 | }
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93 | if (!oldKeyFound) throw new ArgumentException("item not found");
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94 | dict.Remove(oldKey);
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95 | dict.Add(GetKeyForItem(item), item);
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96 | OnItemsReplaced(new TItem[] { item }, new TItem[] { item });
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97 | }
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98 |
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99 | #region Access
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100 | public bool Contains(TKey key) {
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101 | return dict.ContainsKey(key);
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102 | }
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103 | public bool Contains(TItem item) {
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104 | return dict.ContainsValue(item);
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105 | }
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106 |
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107 | public bool TryGetValue(TKey key, out TItem item) {
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108 | return dict.TryGetValue(key, out item);
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109 | }
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110 |
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111 | public bool Exists(Predicate<TItem> match) {
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112 | if (match == null) throw new ArgumentNullException();
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113 | foreach (TItem item in dict.Values) {
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114 | if (match(item)) return true;
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115 | }
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116 | return false;
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117 | }
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118 |
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119 | public TItem Find(Predicate<TItem> match) {
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120 | if (match == null) throw new ArgumentNullException();
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121 | foreach (TItem item in dict.Values) {
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122 | if (match(item)) return item;
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123 | }
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124 | return default(TItem);
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125 | }
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126 | public ICollection<TItem> FindAll(Predicate<TItem> match) {
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127 | if (match == null) throw new ArgumentNullException();
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128 | List<TItem> result = new List<TItem>();
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129 | foreach (TItem item in dict.Values) {
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130 | if (match(item)) result.Add(item);
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131 | }
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132 | return result;
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133 | }
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134 | #endregion
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135 |
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136 | #region Manipulation
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137 | protected virtual void AddItem(TItem item) {
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138 | dict.Add(GetKeyForItem(item), item);
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139 | }
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140 | public void Add(TItem item) {
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141 | AddItem(item);
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142 | OnItemsAdded(new TItem[] { item });
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143 | }
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144 | public void AddRange(IEnumerable<TItem> collection) {
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145 | if (collection == null) throw new ArgumentNullException();
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146 | foreach (TItem item in collection)
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147 | AddItem(item);
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148 | OnItemsAdded(collection);
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149 | }
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150 |
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151 | protected virtual bool RemoveItem(TItem item) {
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152 | return dict.Remove(GetKeyForItem(item));
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153 | }
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154 | public bool Remove(TKey key) {
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155 | TItem item;
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156 | if (TryGetValue(key, out item)) {
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157 | RemoveItem(item);
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158 | OnItemsRemoved(new TItem[] { item });
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159 | return true;
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160 | }
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161 | return false;
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162 | }
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163 | public bool Remove(TItem item) {
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164 | if (RemoveItem(item)) {
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165 | OnItemsRemoved(new TItem[] { item });
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166 | return true;
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167 | }
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168 | return false;
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169 | }
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170 | public void RemoveRange(IEnumerable<TItem> collection) {
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171 | if (collection == null) throw new ArgumentNullException();
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172 | List<TItem> items = new List<TItem>();
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173 | foreach (TItem item in collection) {
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174 | if (RemoveItem(item))
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175 | items.Add(item);
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176 | }
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177 | if (items.Count > 0)
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178 | OnItemsRemoved(items);
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179 | }
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180 | public int RemoveAll(Predicate<TItem> match) {
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181 | ICollection<TItem> items = FindAll(match);
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182 | RemoveRange(items);
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183 | return items.Count;
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184 | }
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185 |
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186 | protected virtual void ClearItems() {
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187 | dict.Clear();
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188 | }
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189 | public void Clear() {
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190 | TItem[] items = dict.Values.ToArray();
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191 | ClearItems();
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192 | OnCollectionReset(new TItem[0], items);
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193 | }
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194 | #endregion
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195 |
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196 | #region Conversion
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197 | public TItem[] ToArray() {
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198 | return dict.Values.ToArray();
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199 | }
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200 | public void CopyTo(TItem[] array, int arrayIndex) {
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201 | dict.Values.CopyTo(array, arrayIndex);
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202 | }
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203 | public ICollection<TOutput> ConvertAll<TOutput>(Converter<TItem, TOutput> converter) {
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204 | if (converter == null) throw new ArgumentNullException();
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205 | List<TOutput> result = new List<TOutput>();
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206 | foreach (TItem item in dict.Values)
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207 | result.Add(converter(item));
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208 | return result;
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209 | }
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210 | #endregion
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211 |
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212 | #region Processing
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213 | public void ForEach(Action<TItem> action) {
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214 | if (action == null) throw new ArgumentNullException();
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215 | foreach (TItem item in dict.Values)
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216 | action(item);
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217 | }
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218 | public bool TrueForAll(Predicate<TItem> match) {
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219 | if (match == null) throw new ArgumentNullException();
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220 | foreach (TItem item in dict.Values)
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221 | if (! match(item)) return false;
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222 | return true;
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223 | }
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224 | #endregion
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225 |
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226 | #region Enumeration
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227 | public IEnumerator<TItem> GetEnumerator() {
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228 | return dict.Values.GetEnumerator();
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229 | }
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230 | IEnumerator IEnumerable.GetEnumerator() {
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231 | return dict.Values.GetEnumerator();
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232 | }
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233 | #endregion
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234 | }
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235 | }
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