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1 /*******************************************************************************
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2 * Copyright (c) 2006, 2007 IBM Corporation and others.
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3 * All rights reserved. This program and the accompanying materials
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4 * are made available under the terms of the Eclipse Public License v1.0
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5 * which accompanies this distribution, and is available at
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6 * http://www.eclipse.org/legal/epl-v10.html
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7 *
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8 * Contributors:
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9 * IBM Corporation - initial API and implementation
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10 * Brad Reynolds - bug 164653
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11 *******************************************************************************/
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12
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13 module org.eclipse.core.databinding.observable.map.ObservableMap;
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81
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14 import org.eclipse.core.databinding.observable.map.MapDiff;
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15 import org.eclipse.core.databinding.observable.map.MapChangeEvent;
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16 import org.eclipse.core.databinding.observable.map.IMapChangeListener;
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17 import org.eclipse.core.databinding.observable.map.IObservableMap;
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78
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18
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19 import java.lang.all;
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20
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21 import java.util.Collection;
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22 import java.util.Map;
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23 import java.util.Set;
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24
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25 import org.eclipse.core.databinding.observable.AbstractObservable;
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26 import org.eclipse.core.databinding.observable.ObservableTracker;
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27 import org.eclipse.core.databinding.observable.Realm;
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28
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29 /**
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30 *
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31 * <p>
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32 * This class is thread safe. All state accessing methods must be invoked from
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33 * the {@link Realm#isCurrent() current realm}. Methods for adding and removing
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34 * listeners may be invoked from any thread.
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35 * </p>
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36 * @since 1.0
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37 */
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38 public class ObservableMap : AbstractObservable , IObservableMap {
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39
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40 protected Map wrappedMap;
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41
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42 private bool stale = false;
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43
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44 /**
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45 * @param wrappedMap
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46 */
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47 public this(Map wrappedMap) {
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48 this(Realm.getDefault(), wrappedMap);
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49 }
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50
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51 /**
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52 * @param realm
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53 * @param wrappedMap
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54 */
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55 public this(Realm realm, Map wrappedMap) {
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56 super(realm);
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57 this.wrappedMap = wrappedMap;
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58 }
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59
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60 public synchronized void addMapChangeListener(IMapChangeListener listener) {
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61 addListener(MapChangeEvent.TYPE, listener);
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62 }
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63
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64 public synchronized void removeMapChangeListener(IMapChangeListener listener) {
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65 removeListener(MapChangeEvent.TYPE, listener);
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66 }
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67
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68 protected void getterCalled() {
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69 ObservableTracker.getterCalled(this);
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70 }
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71
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72 protected void fireMapChange(MapDiff diff) {
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73 checkRealm();
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74
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75 // fire general change event first
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76 super.fireChange();
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77
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78 fireEvent(new MapChangeEvent(this, diff));
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79 }
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80
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81 public bool containsKey(Object key) {
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82 getterCalled();
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83 return wrappedMap.containsKey(key);
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84 }
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85
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86 public bool containsValue(Object value) {
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87 getterCalled();
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88 return wrappedMap.containsValue(value);
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89 }
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90
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91 public Set entrySet() {
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92 getterCalled();
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93 return wrappedMap.entrySet();
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94 }
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95
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96 public Object get(Object key) {
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97 getterCalled();
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98 return wrappedMap.get(key);
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99 }
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100
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101 public bool isEmpty() {
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102 getterCalled();
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103 return wrappedMap.isEmpty();
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104 }
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105
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106 public Set keySet() {
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107 getterCalled();
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108 return wrappedMap.keySet();
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109 }
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110
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111 public int size() {
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112 getterCalled();
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113 return wrappedMap.size();
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114 }
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115
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116 public Collection values() {
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117 getterCalled();
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118 return wrappedMap.values();
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119 }
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120
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121 /**
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122 * Returns the stale state. Must be invoked from the current realm.
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123 *
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124 * @return stale state
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125 */
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126 public bool isStale() {
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127 checkRealm();
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128 return stale;
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129 }
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130
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131 /**
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132 * Sets the stale state. Must be invoked from the current realm.
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133 *
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134 * @param stale
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135 * The stale state to set. This will fire a stale event if the
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136 * given bool is true and this observable set was not already
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137 * stale.
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138 */
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139 public void setStale(bool stale) {
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140 checkRealm();
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141 bool wasStale = this.stale;
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142 this.stale = stale;
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143 if (!wasStale && stale) {
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144 fireStale();
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145 }
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146 }
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147
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148 public Object put(Object key, Object value) {
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149 throw new UnsupportedOperationException();
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150 }
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151
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152 public Object remove(Object key) {
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153 throw new UnsupportedOperationException();
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154 }
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155
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156 public void clear() {
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157 throw new UnsupportedOperationException();
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158 }
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159
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160 public void putAll(Map arg0) {
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161 throw new UnsupportedOperationException();
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162 }
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163
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164 public synchronized void dispose() {
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165 super.dispose();
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166 }
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167 }
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