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1 /*******************************************************************************
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2 * Copyright (c) 2006, 2008 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 * Matthew Hall - bug 208332
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11 *******************************************************************************/
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12
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13 module org.eclipse.core.databinding.observable.set.ObservableSet;
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81
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14 import org.eclipse.core.databinding.observable.set.ISetChangeListener;
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15 import org.eclipse.core.databinding.observable.set.SetDiff;
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16 import org.eclipse.core.databinding.observable.set.SetChangeEvent;
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17 import org.eclipse.core.databinding.observable.set.IObservableSet;
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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.Iterator;
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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 * Abstract implementation of {@link IObservableSet}.
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32 *
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33 * <p>
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34 * This class is thread safe. All state accessing methods must be invoked from
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35 * the {@link Realm#isCurrent() current realm}. Methods for adding and removing
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36 * listeners may be invoked from any thread.
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37 * </p>
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38 *
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39 * @since 1.0
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40 *
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41 */
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42 public abstract class ObservableSet : AbstractObservable ,
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43 IObservableSet {
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85
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44 // DWT start: additional methods in Set
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45 public bool add(String o) {
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46 return add(stringcast(o));
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47 }
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48 public bool remove(String o) {
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49 return remove(stringcast(o));
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50 }
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51 public bool contains(String o) {
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52 return contains(stringcast(o));
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53 }
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54 public int opApply (int delegate(ref Object value) dg){
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55 auto it = iterator();
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56 while(it.hasNext()){
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57 auto v = it.next();
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58 int res = dg( v );
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59 if( res ) return res;
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60 }
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61 return 0;
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62 }
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78
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63
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85
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64 // DWT end: additional methods in Set
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78
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65 protected Set wrappedSet;
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66
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67 private bool stale = false;
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68
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69 protected Object elementType;
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70
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71 protected this(Set wrappedSet, Object elementType) {
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72 this(Realm.getDefault(), wrappedSet, elementType);
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73 }
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74
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75 protected this(Realm realm, Set wrappedSet, Object elementType) {
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76 super(realm);
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77 this.wrappedSet = wrappedSet;
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78 this.elementType = elementType;
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79 }
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80
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81 public synchronized void addSetChangeListener(ISetChangeListener listener) {
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82 addListener(SetChangeEvent.TYPE, listener);
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83 }
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84
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85 public synchronized void removeSetChangeListener(ISetChangeListener listener) {
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86 removeListener(SetChangeEvent.TYPE, listener);
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87 }
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88
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89 protected void fireSetChange(SetDiff diff) {
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90 // fire general change event first
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91 super.fireChange();
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92
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93 fireEvent(new SetChangeEvent(this, diff));
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94 }
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95
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96 public bool contains(Object o) {
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97 getterCalled();
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98 return wrappedSet.contains(o);
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99 }
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100
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101 public bool containsAll(Collection c) {
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102 getterCalled();
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103 return wrappedSet.containsAll(c);
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104 }
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105
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85
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106 public override equals_t opEquals(Object o) {
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78
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107 getterCalled();
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85
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108 return wrappedSet.opEquals(o);
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78
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109 }
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110
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85
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111 public hash_t toHash() {
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78
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112 getterCalled();
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85
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113 return wrappedSet.toHash();
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78
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114 }
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115
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116 public bool isEmpty() {
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117 getterCalled();
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118 return wrappedSet.isEmpty();
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119 }
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120
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121 public Iterator iterator() {
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122 getterCalled();
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123 final Iterator wrappedIterator = wrappedSet.iterator();
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124 return new class() Iterator {
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125
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126 public void remove() {
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127 throw new UnsupportedOperationException();
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128 }
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129
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130 public bool hasNext() {
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131 ObservableTracker.getterCalled(this.outer);
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132 return wrappedIterator.hasNext();
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133 }
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134
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135 public Object next() {
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136 ObservableTracker.getterCalled(this.outer);
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137 return wrappedIterator.next();
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138 }
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139 };
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140 }
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141
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142 public int size() {
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143 getterCalled();
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144 return wrappedSet.size();
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145 }
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146
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147 public Object[] toArray() {
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148 getterCalled();
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149 return wrappedSet.toArray();
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150 }
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151
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152 public Object[] toArray(Object[] a) {
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153 getterCalled();
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154 return wrappedSet.toArray(a);
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155 }
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156
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157 public String toString() {
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158 getterCalled();
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159 return wrappedSet.toString();
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160 }
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161
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162 protected void getterCalled() {
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163 ObservableTracker.getterCalled(this);
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164 }
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165
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166 public bool add(Object o) {
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167 throw new UnsupportedOperationException();
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168 }
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169
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170 public bool addAll(Collection c) {
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171 throw new UnsupportedOperationException();
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172 }
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173
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174 public bool remove(Object o) {
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175 throw new UnsupportedOperationException();
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176 }
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177
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178 public bool removeAll(Collection c) {
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179 throw new UnsupportedOperationException();
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180 }
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181
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182 public bool retainAll(Collection c) {
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183 throw new UnsupportedOperationException();
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184 }
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185
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186 public void clear() {
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187 throw new UnsupportedOperationException();
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188 }
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189
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190 /**
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191 * @return Returns the stale state.
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192 */
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193 public bool isStale() {
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194 getterCalled();
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195 return stale;
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196 }
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197
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198 /**
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199 * @param stale
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200 * The stale state to set. This will fire a stale event if the
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201 * given bool is true and this observable set was not already
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202 * stale.
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203 */
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204 public void setStale(bool stale) {
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205 checkRealm();
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206 bool wasStale = this.stale;
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207 this.stale = stale;
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208 if (!wasStale && stale) {
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209 fireStale();
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210 }
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211 }
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212
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213 /**
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214 * @param wrappedSet The wrappedSet to set.
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215 */
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216 protected void setWrappedSet(Set wrappedSet) {
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217 this.wrappedSet = wrappedSet;
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218 }
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219
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220 protected void fireChange() {
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221 throw new RuntimeException("fireChange should not be called, use fireSetChange() instead"); //$NON-NLS-1$
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222 }
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223
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224 /* (non-Javadoc)
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225 * @see org.eclipse.jface.provisional.databinding.observable.AbstractObservable#dispose()
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226 */
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227 public synchronized void dispose() {
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228 super.dispose();
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229 }
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230
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231 public Object getElementType() {
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232 return elementType;
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233 }
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234 }
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