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annotate org.eclipse.core.databinding.observable/src/org/eclipse/core/databinding/observable/list/AbstractObservableList.d @ 97:c86eb8b3098e

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packageimport
author Frank Benoit <benoit@tionex.de>
date Tue, 21 Apr 2009 11:18:25 +0200
parents b74ac5dfcc06
children
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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 * Brad Reynolds - bug 164653
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11 * Brad Reynolds - bug 167204
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12 * Matthew Hall - bug 118516
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13 * Matthew Hall - bug 208858
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14 * Matthew Hall - bug 208332
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15 *******************************************************************************/
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16
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17 module org.eclipse.core.databinding.observable.list.AbstractObservableList;
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18 import org.eclipse.core.databinding.observable.list.IListChangeListener;
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19 import org.eclipse.core.databinding.observable.list.ListChangeEvent;
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20 import org.eclipse.core.databinding.observable.list.ListDiff;
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21 import org.eclipse.core.databinding.observable.list.IObservableList;
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22
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23 import java.lang.all;
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24
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25 import java.util.AbstractList;
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26 import java.util.Collection;
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27 import java.util.Iterator;
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28
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29 import org.eclipse.core.databinding.observable.ChangeEvent;
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30 import org.eclipse.core.databinding.observable.ChangeSupport;
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31 import org.eclipse.core.databinding.observable.IChangeListener;
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32 import org.eclipse.core.databinding.observable.IStaleListener;
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33 import org.eclipse.core.databinding.observable.ObservableTracker;
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34 import org.eclipse.core.databinding.observable.Realm;
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35 import org.eclipse.core.databinding.observable.StaleEvent;
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36 import org.eclipse.core.runtime.Assert;
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37 import org.eclipse.core.runtime.AssertionFailedException;
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38
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39 /**
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40 * Subclasses should override at least get(int index) and size().
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41 *
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42 * <p>
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43 * This class is thread safe. All state accessing methods must be invoked from
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44 * the {@link Realm#isCurrent() current realm}. Methods for adding and removing
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45 * listeners may be invoked from any thread.
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46 * </p>
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47 *
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48 * @since 1.0
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49 *
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50 */
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51 public abstract class AbstractObservableList : AbstractList ,
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52 IObservableList {
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53
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54 private ChangeSupport changeSupport;
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55
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56 /**
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57 * @param realm
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58 *
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59 */
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60 public this(Realm realm) {
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61 Assert.isNotNull(realm, "Realm cannot be null"); //$NON-NLS-1$
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62 changeSupport = new class(realm) ChangeSupport {
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63 protected void firstListenerAdded() {
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64 this.outer.firstListenerAdded();
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65 }
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66 protected void lastListenerRemoved() {
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67 this.outer.lastListenerRemoved();
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68 }
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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 *
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74 */
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75 public this() {
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76 this(Realm.getDefault());
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77 }
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78
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79 public bool isStale() {
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80 getterCalled();
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81 return false;
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82 }
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83
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84 public synchronized void addListChangeListener(IListChangeListener listener) {
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85 changeSupport.addListener(ListChangeEvent.TYPE, listener);
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86 }
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87
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88 public synchronized void removeListChangeListener(IListChangeListener listener) {
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89 changeSupport.removeListener(ListChangeEvent.TYPE, listener);
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90 }
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91
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92 protected void fireListChange(ListDiff diff) {
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93 // fire general change event first
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94 fireChange();
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95 changeSupport.fireEvent(new ListChangeEvent(this, diff));
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96 }
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97
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98 public synchronized void addChangeListener(IChangeListener listener) {
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99 changeSupport.addChangeListener(listener);
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100 }
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101
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102 public synchronized void removeChangeListener(IChangeListener listener) {
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103 changeSupport.removeChangeListener(listener);
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104 }
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105
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106 public synchronized void addStaleListener(IStaleListener listener) {
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107 changeSupport.addStaleListener(listener);
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108 }
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109
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110 public synchronized void removeStaleListener(IStaleListener listener) {
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111 changeSupport.removeStaleListener(listener);
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112 }
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113
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114 /**
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115 * Fires change event. Must be invoked from the current realm.
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116 */
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117 protected void fireChange() {
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118 checkRealm();
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119 changeSupport.fireEvent(new ChangeEvent(this));
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120 }
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121
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122 /**
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123 * Fires stale event. Must be invoked from the current realm.
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124 */
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125 protected void fireStale() {
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126 checkRealm();
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127 changeSupport.fireEvent(new StaleEvent(this));
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128 }
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129
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130 /**
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131 *
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132 */
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133 protected void firstListenerAdded() {
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134 }
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135
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136 /**
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137 *
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138 */
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139 protected void lastListenerRemoved() {
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140 }
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141
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142 /**
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143 *
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144 */
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145 public synchronized void dispose() {
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146 changeSupport = null;
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147 lastListenerRemoved();
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148 }
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149
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150 public final int size() {
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151 getterCalled();
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152 return doGetSize();
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153 }
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154
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155 /**
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156 * @return the size
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157 */
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158 protected abstract int doGetSize();
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159
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160 /**
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161 *
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162 */
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163 private void getterCalled() {
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164 ObservableTracker.getterCalled(this);
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165 }
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166
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167 public bool isEmpty() {
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168 getterCalled();
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169 return super.isEmpty();
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170 }
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171
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172 public bool contains(Object o) {
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173 getterCalled();
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174 return super.contains(o);
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175 }
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176
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177 public Iterator iterator() {
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178 getterCalled();
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179 final Iterator wrappedIterator = super.iterator();
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180 return new class() Iterator {
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181 public void remove() {
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182 wrappedIterator.remove();
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183 }
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184
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185 public bool hasNext() {
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186 return wrappedIterator.hasNext();
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187 }
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188
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189 public Object next() {
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190 return wrappedIterator.next();
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191 }
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192 };
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193 }
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194
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195 public Object[] toArray() {
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196 getterCalled();
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197 return super.toArray();
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198 }
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199
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200 public Object[] toArray(Object a[]) {
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201 getterCalled();
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202 return super.toArray(a);
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203 }
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204
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205 // Modification Operations
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206
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207 public bool add(Object o) {
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208 getterCalled();
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209 return super.add(o);
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210 }
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211
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212 /**
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213 * Moves the element located at <code>oldIndex</code> to
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214 * <code>newIndex</code>. This method is equivalent to calling
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215 * <code>add(newIndex, remove(oldIndex))</code>.
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216 * <p>
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217 * Subclasses should override this method to deliver list change
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218 * notification for the remove and add operations in the same
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219 * ListChangeEvent, as this allows {@link ListDiff#acceptcast(ListDiffVisitor)}
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220 * to recognize the operation as a move.
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221 *
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222 * @param oldIndex
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223 * the element's position before the move. Must be within the
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224 * range <code>0 &lt;= oldIndex &lt; size()</code>.
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225 * @param newIndex
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226 * the element's position after the move. Must be within the
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227 * range <code>0 &lt;= newIndex &lt; size()</code>.
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228 * @return the element that was moved.
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229 * @throws IndexOutOfBoundsException
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230 * if either argument is out of range (<code>0 &lt;= index &lt; size()</code>).
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231 * @see ListDiffVisitor#handleMove(int, int, Object)
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232 * @see ListDiff#acceptcast(ListDiffVisitor)
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233 * @since 1.1
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234 */
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235 public Object move(int oldIndex, int newIndex) {
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236 checkRealm();
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237 int size = doGetSize();
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238 if (oldIndex < 0 || oldIndex >= size)
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239 throw new IndexOutOfBoundsException(
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240 "oldIndex: " + oldIndex + ", size:" + size); //$NON-NLS-1$ //$NON-NLS-2$
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241 if (newIndex < 0 || newIndex >= size)
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242 throw new IndexOutOfBoundsException(
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243 "newIndex: " + newIndex + ", size:" + size); //$NON-NLS-1$ //$NON-NLS-2$
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244 Object element = remove(oldIndex);
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245 add(newIndex, element);
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246 return element;
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247 }
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248
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249 public bool remove(Object o) {
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250 getterCalled();
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251 return super.remove(o);
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252 }
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253
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254 // Bulk Modification Operations
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255
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256 public bool containsAll(Collection c) {
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257 getterCalled();
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258 return super.containsAll(c);
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259 }
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260
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261 public bool addAll(Collection c) {
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262 getterCalled();
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263 return super.addAll(c);
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264 }
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265
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266 public bool addAll(int index, Collection c) {
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267 getterCalled();
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268 return super.addAll(c);
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269 }
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270
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271 public bool removeAll(Collection c) {
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272 getterCalled();
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273 return super.removeAll(c);
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274 }
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275
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276 public bool retainAll(Collection c) {
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277 getterCalled();
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278 return super.retainAll(c);
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279 }
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280
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281 // Comparison and hashing
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282
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283 public override equals_t opEquals(Object o) {
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284 getterCalled();
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285 return super.equals(o);
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286 }
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287
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288 public override hash_t toHash() {
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289 getterCalled();
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290 return super.hashCode();
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291 }
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292
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293 public int indexOf(Object o) {
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294 getterCalled();
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295 return super.indexOf(o);
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296 }
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297
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298 public int lastIndexOf(Object o) {
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299 getterCalled();
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300 return super.lastIndexOf(o);
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301 }
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302
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303 public Realm getRealm() {
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304 return changeSupport.getRealm();
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305 }
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306
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307 /**
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308 * Asserts that the realm is the current realm.
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309 *
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310 * @see Realm#isCurrent()
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311 * @throws AssertionFailedException
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312 * if the realm is not the current realm
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313 */
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314 protected void checkRealm() {
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315 Assert.isTrue(getRealm().isCurrent(),
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316 "This operation must be run within the observable's realm"); //$NON-NLS-1$
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317 }
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318 }