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annotate org.eclipse.core.databinding.observable/src/org/eclipse/core/databinding/observable/list/ObservableList.d @ 96:b74ac5dfcc06

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package to module and java.lang.all import
author Frank Benoit <benoit@tionex.de>
date Tue, 21 Apr 2009 11:03:33 +0200
parents 6208d4f6a277
children c86eb8b3098e
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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 - bugs 164653, 167204
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11 * Matthew Hall - bugs 208858, 208332, 245183
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12 * Tom Schindl - bug 245183
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13 *******************************************************************************/
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14
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15 module org.eclipse.core.databinding.observable.list.ObservableList;
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16
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17 import java.lang.all;
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18
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19 import java.util.Collection;
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20 import java.util.Iterator;
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21 import java.util.List;
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22 import java.util.ListIterator;
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23
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24 import org.eclipse.core.databinding.observable.AbstractObservable;
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25 import org.eclipse.core.databinding.observable.Diffs;
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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 IObservableList}, based on an underlying regular list.
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32 * <p>
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33 * This class is thread safe. All state accessing methods must be invoked from
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34 * the {@link Realm#isCurrent() current realm}. Methods for adding and removing
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35 * listeners may be invoked from any thread.
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36 * </p>
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37 * @since 1.0
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38 *
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39 */
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40 public abstract class ObservableList : AbstractObservable ,
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41 IObservableList {
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42
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43 protected List wrappedList;
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44
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45 /**
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46 * Stale state of the list. Access must occur in the current realm.
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47 */
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48 private bool stale = false;
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49
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50 private Object elementType;
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51
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52 protected this(List wrappedList, Object elementType) {
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53 this(Realm.getDefault(), wrappedList, elementType);
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54 }
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55
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56 protected this(Realm realm, List wrappedList, Object elementType) {
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57 super(realm);
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58 this.wrappedList = wrappedList;
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59 this.elementType = elementType;
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60 }
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61
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62 public synchronized void addListChangeListener(IListChangeListener listener) {
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63 addListener(ListChangeEvent.TYPE, listener);
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64 }
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65
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66 public synchronized void removeListChangeListener(IListChangeListener listener) {
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67 removeListener(ListChangeEvent.TYPE, listener);
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68 }
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69
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70 protected void fireListChange(ListDiff diff) {
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71 // fire general change event first
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72 super.fireChange();
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73 fireEvent(new ListChangeEvent(this, diff));
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74 }
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75
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76 public bool contains(Object o) {
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77 getterCalled();
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78 return wrappedList.contains(o);
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79 }
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80
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81 public bool containsAll(Collection c) {
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82 getterCalled();
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83 return wrappedList.containsAll(c);
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84 }
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85
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86 public override equals_t opEquals(Object o) {
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87 getterCalled();
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88
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89 if (o is this)
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90 return true;
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91 if (o is null)
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92 return false;
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93 if (getClass() is o.getClass()) {
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94 return wrappedList.equals((cast(ObservableList) o).wrappedList);
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95 }
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96
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97 return wrappedList.equals(o);
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98 }
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99
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100 public override hash_t toHash() {
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101 getterCalled();
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102 return wrappedList.hashCode();
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103 }
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104
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105 public bool isEmpty() {
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106 getterCalled();
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107 return wrappedList.isEmpty();
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108 }
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109
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110 public Iterator iterator() {
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111 getterCalled();
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112 final Iterator wrappedIterator = wrappedList.iterator();
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113 return new class() Iterator {
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114
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115 public void remove() {
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116 throw new UnsupportedOperationException();
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117 }
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118
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119 public bool hasNext() {
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120 return wrappedIterator.hasNext();
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121 }
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122
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123 public Object next() {
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124 return wrappedIterator.next();
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125 }
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126 };
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127 }
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128
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129 public int size() {
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130 getterCalled();
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131 return wrappedList.size();
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132 }
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133
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134 public Object[] toArray() {
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135 getterCalled();
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136 return wrappedList.toArray();
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137 }
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138
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139 public Object[] toArray(Object[] a) {
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140 getterCalled();
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141 return wrappedList.toArray(a);
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142 }
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143
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144 public String toString() {
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145 getterCalled();
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146 return wrappedList.toString();
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147 }
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148
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149 /**
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150 * @TrackedGetter
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151 */
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152 public Object get(int index) {
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153 getterCalled();
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154 return wrappedList.get(index);
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155 }
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156
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157 /**
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158 * @TrackedGetter
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159 */
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160 public int indexOf(Object o) {
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161 getterCalled();
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162 return wrappedList.indexOf(o);
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163 }
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164
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165 /**
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166 * @TrackedGetter
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167 */
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168 public int lastIndexOf(Object o) {
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169 getterCalled();
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170 return wrappedList.lastIndexOf(o);
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171 }
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172
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173 // List Iterators
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174
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175 /**
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176 * @TrackedGetter
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177 */
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178 public ListIterator listIterator() {
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179 return listIterator(0);
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180 }
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181
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182 /**
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183 * @TrackedGetter
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184 */
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185 public ListIterator listIterator(int index) {
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186 getterCalled();
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187 final ListIterator wrappedIterator = wrappedList.listIterator(index);
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188 return new class() ListIterator {
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189
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190 public int nextIndex() {
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191 return wrappedIterator.nextIndex();
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192 }
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193
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194 public int previousIndex() {
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195 return wrappedIterator.previousIndex();
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196 }
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197
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198 public void remove() {
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199 throw new UnsupportedOperationException();
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200 }
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201
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202 public bool hasNext() {
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203 return wrappedIterator.hasNext();
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204 }
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205
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206 public bool hasPrevious() {
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207 return wrappedIterator.hasPrevious();
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208 }
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209
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210 public Object next() {
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211 return wrappedIterator.next();
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212 }
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213
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214 public Object previous() {
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215 return wrappedIterator.previous();
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216 }
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217
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218 public void add(Object o) {
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219 throw new UnsupportedOperationException();
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220 }
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221
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222 public void set(Object o) {
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223 throw new UnsupportedOperationException();
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224 }
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225 };
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226 }
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227
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228
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229 public List subList(final int fromIndex, final int toIndex) {
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230 getterCalled();
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231 if (fromIndex < 0 || fromIndex > toIndex || toIndex > size()) {
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232 throw new IndexOutOfBoundsException();
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233 }
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234 return new AbstractObservableList(getRealm()) {
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235
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236 public Object getElementType() {
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237 return this.outer.getElementType();
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238 }
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239
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240 public Object get(int location) {
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241 return this.outer.get(fromIndex + location);
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242 }
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243
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244 protected int doGetSize() {
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245 return toIndex - fromIndex;
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246 }
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247 };
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248 }
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249
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250 protected void getterCalled() {
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251 ObservableTracker.getterCalled(this);
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252 }
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253
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254 public Object set(int index, Object element) {
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255 throw new UnsupportedOperationException();
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256 }
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257
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258 /**
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259 * Moves the element located at <code>oldIndex</code> to
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260 * <code>newIndex</code>. This method is equivalent to calling
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261 * <code>add(newIndex, remove(oldIndex))</code>.
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262 * <p>
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263 * Subclasses should override this method to deliver list change
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264 * notification for the remove and add operations in the same
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265 * ListChangeEvent, as this allows {@link ListDiff#acceptcast(ListDiffVisitor)}
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266 * to recognize the operation as a move.
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267 *
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268 * @param oldIndex
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269 * the element's position before the move. Must be within the
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270 * range <code>0 &lt;= oldIndex &lt; size()</code>.
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271 * @param newIndex
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272 * the element's position after the move. Must be within the
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273 * range <code>0 &lt;= newIndex &lt; size()</code>.
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274 * @return the element that was moved.
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275 * @throws IndexOutOfBoundsException
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276 * if either argument is out of range (<code>0 &lt;= index &lt; size()</code>).
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277 * @see ListDiffVisitor#handleMove(int, int, Object)
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278 * @see ListDiff#acceptcast(ListDiffVisitor)
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279 * @since 1.1
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280 */
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281 public Object move(int oldIndex, int newIndex) {
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282 checkRealm();
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283 int size = wrappedList.size();
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284 if (oldIndex < 0 || oldIndex >= size)
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285 throw new IndexOutOfBoundsException(
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286 "oldIndex: " + oldIndex + ", size:" + size); //$NON-NLS-1$ //$NON-NLS-2$
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287 if (newIndex < 0 || newIndex >= size)
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288 throw new IndexOutOfBoundsException(
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289 "newIndex: " + newIndex + ", size:" + size); //$NON-NLS-1$ //$NON-NLS-2$
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290 Object element = remove(oldIndex);
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291 add(newIndex, element);
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292 return element;
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293 }
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294
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295 public Object remove(int index) {
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296 throw new UnsupportedOperationException();
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297 }
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298
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299 public bool add(Object o) {
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300 throw new UnsupportedOperationException();
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301 }
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302
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303 public void add(int index, Object element) {
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304 throw new UnsupportedOperationException();
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305 }
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306
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307 public bool addAll(Collection c) {
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308 throw new UnsupportedOperationException();
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309 }
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310
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311 public bool addAll(int index, Collection c) {
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312 throw new UnsupportedOperationException();
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313 }
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314
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315 public bool remove(Object o) {
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316 throw new UnsupportedOperationException();
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317 }
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318
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319 public bool removeAll(Collection c) {
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320 throw new UnsupportedOperationException();
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321 }
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322
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323 public bool retainAll(Collection c) {
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324 throw new UnsupportedOperationException();
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325 }
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326
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327 public void clear() {
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328 throw new UnsupportedOperationException();
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329 }
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330
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331 /**
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332 * Returns the stale state. Must be invoked from the current realm.
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333 *
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334 * @return stale state
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335 */
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336 public bool isStale() {
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337 getterCalled();
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338 return stale;
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339 }
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340
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341 /**
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342 * Sets the stale state. Must be invoked from the current realm.
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343 *
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344 * @param stale
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345 * The stale state to list. This will fire a stale event if the
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346 * given bool is true and this observable list was not already
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347 * stale.
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348 */
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349 public void setStale(bool stale) {
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350 checkRealm();
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351
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352 bool wasStale = this.stale;
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353 this.stale = stale;
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354 if (!wasStale && stale) {
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355 fireStale();
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356 }
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357 }
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358
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359 protected void fireChange() {
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360 throw new RuntimeException("fireChange should not be called, use fireListChange() instead"); //$NON-NLS-1$
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361 }
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362
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363 /* (non-Javadoc)
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364 * @see org.eclipse.jface.provisional.databinding.observable.AbstractObservable#dispose()
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365 */
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366 public synchronized void dispose() {
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367 super.dispose();
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368 }
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369
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370 public Object getElementType() {
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371 return elementType;
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372 }
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373
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374 protected void updateWrappedList(List newList) {
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375 List oldList = wrappedList;
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376 ListDiff listDiff = Diffs.computeListDiff(oldList, newList);
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377 wrappedList = newList;
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378 fireListChange(listDiff);
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379 }
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380
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381 }