Mercurial > projects > dwt2
annotate org.eclipse.core.databinding.observable/src/org/eclipse/core/databinding/observable/set/AbstractObservableSet.d @ 97:c86eb8b3098e
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author | Frank Benoit <benoit@tionex.de> |
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date | Tue, 21 Apr 2009 11:18:25 +0200 |
parents | b74ac5dfcc06 |
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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 |
96
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13 module org.eclipse.core.databinding.observable.set.AbstractObservableSet; |
97 | 14 import org.eclipse.core.databinding.observable.set.ISetChangeListener; |
15 import org.eclipse.core.databinding.observable.set.SetDiff; | |
16 import org.eclipse.core.databinding.observable.set.SetChangeEvent; | |
17 import org.eclipse.core.databinding.observable.set.IObservableSet; | |
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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.ChangeSupport; |
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27 import org.eclipse.core.databinding.observable.ObservableTracker; |
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28 import org.eclipse.core.databinding.observable.Realm; |
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29 |
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30 /** |
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31 * |
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32 * Abstract implementation of {@link IObservableSet}. |
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33 * |
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34 * <p> |
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35 * This class is thread safe. All state accessing methods must be invoked from |
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36 * the {@link Realm#isCurrent() current realm}. Methods for adding and removing |
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37 * listeners may be invoked from any thread. |
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38 * </p> |
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39 * |
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40 * @since 1.0 |
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41 */ |
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42 public abstract class AbstractObservableSet : AbstractObservable , |
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43 IObservableSet { |
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44 |
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45 private ChangeSupport changeSupport; |
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46 |
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47 private bool stale = false; |
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48 |
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49 protected this() { |
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50 this(Realm.getDefault()); |
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51 } |
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52 |
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53 protected void firstListenerAdded() { |
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54 super.firstListenerAdded(); |
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55 } |
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56 |
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57 protected void lastListenerRemoved() { |
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58 super.lastListenerRemoved(); |
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59 } |
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60 |
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61 protected this(Realm realm) { |
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62 super(realm); |
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63 changeSupport = new class(realm) ChangeSupport { |
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64 protected void firstListenerAdded() { |
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65 this.outer.firstListenerAdded(); |
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66 } |
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67 protected void lastListenerRemoved() { |
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68 this.outer.lastListenerRemoved(); |
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69 } |
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70 }; |
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71 } |
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72 |
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73 public synchronized void addSetChangeListener(ISetChangeListener listener) { |
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74 changeSupport.addListener(SetChangeEvent.TYPE, listener); |
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75 } |
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76 |
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77 public synchronized void removeSetChangeListener(ISetChangeListener listener) { |
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78 changeSupport.removeListener(SetChangeEvent.TYPE, listener); |
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79 } |
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80 |
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81 protected abstract Set getWrappedSet(); |
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82 |
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83 protected void fireSetChange(SetDiff diff) { |
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84 // fire general change event first |
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85 super.fireChange(); |
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86 |
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87 changeSupport.fireEvent(new SetChangeEvent(this, diff)); |
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88 } |
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89 |
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90 public bool contains(Object o) { |
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91 getterCalled(); |
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92 return getWrappedSet().contains(o); |
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93 } |
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94 |
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95 public bool containsAll(Collection c) { |
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96 getterCalled(); |
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97 return getWrappedSet().containsAll(c); |
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98 } |
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99 |
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100 public override equals_t opEquals(Object o) { |
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101 getterCalled(); |
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102 return getWrappedSet().equals(o); |
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103 } |
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104 |
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105 public override hash_t toHash() { |
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106 getterCalled(); |
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107 return getWrappedSet().hashCode(); |
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108 } |
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109 |
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110 public bool isEmpty() { |
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111 getterCalled(); |
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112 return getWrappedSet().isEmpty(); |
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113 } |
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114 |
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115 public Iterator iterator() { |
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116 getterCalled(); |
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117 final Iterator wrappedIterator = getWrappedSet().iterator(); |
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118 return new class() Iterator { |
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119 |
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120 public void remove() { |
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121 throw new UnsupportedOperationException(); |
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122 } |
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123 |
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124 public bool hasNext() { |
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125 ObservableTracker.getterCalled(this.outer); |
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126 return wrappedIterator.hasNext(); |
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127 } |
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128 |
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129 public Object next() { |
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130 ObservableTracker.getterCalled(this.outer); |
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131 return wrappedIterator.next(); |
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132 } |
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133 }; |
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134 } |
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135 |
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136 public int size() { |
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137 getterCalled(); |
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138 return getWrappedSet().size(); |
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139 } |
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140 |
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141 public Object[] toArray() { |
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142 getterCalled(); |
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143 return getWrappedSet().toArray(); |
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144 } |
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145 |
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146 public Object[] toArray(Object[] a) { |
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147 getterCalled(); |
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148 return getWrappedSet().toArray(a); |
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149 } |
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150 |
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151 public String toString() { |
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152 getterCalled(); |
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153 return getWrappedSet().toString(); |
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154 } |
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155 |
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156 protected void getterCalled() { |
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157 ObservableTracker.getterCalled(this); |
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158 } |
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159 |
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160 public bool add(Object o) { |
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161 throw new UnsupportedOperationException(); |
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162 } |
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163 |
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164 public bool addAll(Collection c) { |
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165 throw new UnsupportedOperationException(); |
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166 } |
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167 |
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168 public bool remove(Object o) { |
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169 throw new UnsupportedOperationException(); |
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170 } |
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171 |
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172 public bool removeAll(Collection c) { |
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173 throw new UnsupportedOperationException(); |
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174 } |
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175 |
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176 public bool retainAll(Collection c) { |
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177 throw new UnsupportedOperationException(); |
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178 } |
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179 |
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180 public void clear() { |
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181 throw new UnsupportedOperationException(); |
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182 } |
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183 |
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184 /** |
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185 * @return Returns the stale state. |
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186 */ |
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187 public bool isStale() { |
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188 getterCalled(); |
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189 return stale; |
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190 } |
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191 |
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192 /** |
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193 * @param stale |
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194 * The stale state to set. This will fire a stale event if the |
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195 * given bool is true and this observable set was not already |
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196 * stale. |
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197 */ |
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198 public void setStale(bool stale) { |
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199 checkRealm(); |
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200 bool wasStale = this.stale; |
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201 this.stale = stale; |
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202 if (!wasStale && stale) { |
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203 fireStale(); |
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204 } |
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205 } |
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206 |
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207 |
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208 protected void fireChange() { |
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209 throw new RuntimeException("fireChange should not be called, use fireSetChange() instead"); //$NON-NLS-1$ |
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210 } |
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211 |
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212 /* (non-Javadoc) |
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213 * @see org.eclipse.jface.provisional.databinding.observable.AbstractObservable#dispose() |
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214 */ |
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215 public synchronized void dispose() { |
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216 super.dispose(); |
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217 |
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218 if (changeSupport !is null) { |
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219 changeSupport.dispose(); |
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220 changeSupport = null; |
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221 } |
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222 } |
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223 |
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224 } |