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annotate org.eclipse.core.databinding.observable/src/org/eclipse/core/databinding/observable/list/WritableList.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) 2005, 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 * Gautam Saggar - bug 169529
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13 * Brad Reynolds - bug 147515
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14 * Matthew Hall - bug 208858, 213145
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15 *******************************************************************************/
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b74ac5dfcc06 package to module and java.lang.all import
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16 module org.eclipse.core.databinding.observable.list.WritableList;
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17
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18 import java.lang.all;
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19
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20 import java.util.ArrayList;
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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.List;
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24
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25 import org.eclipse.core.databinding.observable.Diffs;
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26 import org.eclipse.core.databinding.observable.Realm;
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27
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28 /**
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29 * Mutable observable list backed by an ArrayList.
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30 *
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31 * <p>
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32 * This class is thread safe. All state accessing methods must be invoked from
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33 * the {@link Realm#isCurrent() current realm}. Methods for adding and removing
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34 * listeners may be invoked from any thread.
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35 * </p>
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36 *
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37 * @since 1.0
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38 */
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39 public class WritableList : ObservableList {
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40
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41 /**
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42 * Creates an empty writable list in the default realm with a
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43 * <code>null</code> element type.
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44 *
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45 */
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46 public this() {
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47 this(Realm.getDefault());
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48 }
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49
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50 /**
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51 * Creates an empty writable list with a <code>null</code> element type.
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52 *
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53 * @param realm
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54 */
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55 public this(Realm realm) {
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56 this(realm, new ArrayList(), null);
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57 }
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58
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59 /**
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60 * Constructs a new instance with the default realm.
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61 *
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62 * @param toWrap
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63 * @param elementType
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64 * can be <code>null</code>
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65 */
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66 public this(List toWrap, Object elementType) {
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67 this(Realm.getDefault(), toWrap, elementType);
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68 }
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69
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70 /**
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71 * Creates a writable list containing elements of the given type, wrapping
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72 * an existing client-supplied list.
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73 *
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74 * @param realm
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75 * @param toWrap
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76 * The java.utilList to wrap
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77 * @param elementType
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78 * can be <code>null</code>
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79 */
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80 public this(Realm realm, List toWrap, Object elementType) {
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81 super(realm, toWrap, elementType);
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82 }
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83
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84 public Object set(int index, Object element) {
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85 checkRealm();
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86 Object oldElement = wrappedList.set(index, element);
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87 fireListChange(Diffs.createListDiff(Diffs.createListDiffEntry(index,
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88 false, oldElement), Diffs.createListDiffEntry(index, true,
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89 element)));
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90 return oldElement;
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91 }
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92
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93 /**
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94 * @since 1.1
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95 */
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96 public Object move(int oldIndex, int newIndex) {
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97 checkRealm();
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98 int size = wrappedList.size();
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99 if (oldIndex < 0 || oldIndex >= size)
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100 throw new IndexOutOfBoundsException(
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101 "oldIndex: " + oldIndex + ", size:" + size); //$NON-NLS-1$ //$NON-NLS-2$
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102 if (newIndex < 0 || newIndex >= size)
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103 throw new IndexOutOfBoundsException(
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104 "newIndex: " + newIndex + ", size:" + size); //$NON-NLS-1$ //$NON-NLS-2$
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105 if (oldIndex is newIndex)
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106 return wrappedList.get(oldIndex);
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107 Object element = wrappedList.remove(oldIndex);
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108 wrappedList.add(newIndex, element);
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109 fireListChange(Diffs.createListDiff(Diffs.createListDiffEntry(oldIndex,
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110 false, element), Diffs.createListDiffEntry(newIndex, true,
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111 element)));
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112 return element;
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113 }
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114
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115 public Object remove(int index) {
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116 checkRealm();
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117 Object oldElement = wrappedList.remove(index);
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118 fireListChange(Diffs.createListDiff(Diffs.createListDiffEntry(index,
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119 false, oldElement)));
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120 return oldElement;
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121 }
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122
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123 public bool add(Object element) {
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124 checkRealm();
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125 bool added = wrappedList.add(element);
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126 if (added) {
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127 fireListChange(Diffs.createListDiff(Diffs.createListDiffEntry(
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128 wrappedList.size() - 1, true, element)));
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129 }
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130 return added;
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131 }
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132
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133 public void add(int index, Object element) {
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134 checkRealm();
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135 wrappedList.add(index, element);
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136 fireListChange(Diffs.createListDiff(Diffs.createListDiffEntry(index,
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137 true, element)));
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138 }
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139
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140 public bool addAll(Collection c) {
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141 checkRealm();
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142 ListDiffEntry[] entries = new ListDiffEntry[c.size()];
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143 int i = 0;
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144 int addIndex = wrappedList.size();
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145 for (Iterator it = c.iterator(); it.hasNext();) {
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146 Object element = it.next();
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147 entries[i++] = Diffs.createListDiffEntry(addIndex++, true, element);
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148 }
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149 bool added = wrappedList.addAll(c);
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150 fireListChange(Diffs.createListDiff(entries));
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151 return added;
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152 }
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153
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154 public bool addAll(int index, Collection c) {
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155 checkRealm();
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156 ListDiffEntry[] entries = new ListDiffEntry[c.size()];
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157 int i = 0;
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158 int addIndex = index;
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159 for (Iterator it = c.iterator(); it.hasNext();) {
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160 Object element = it.next();
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161 entries[i++] = Diffs.createListDiffEntry(addIndex++, true, element);
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162 }
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163 bool added = wrappedList.addAll(index, c);
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164 fireListChange(Diffs.createListDiff(entries));
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165 return added;
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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 checkRealm();
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170 int index = wrappedList.indexOf(o);
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171 if (index is -1) {
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172 return false;
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173 }
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174 wrappedList.remove(index);
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175 fireListChange(Diffs.createListDiff(Diffs.createListDiffEntry(index,
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176 false, o)));
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177 return true;
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178 }
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179
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180 public bool removeAll(Collection c) {
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181 checkRealm();
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182 List entries = new ArrayList();
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183 for (Iterator it = c.iterator(); it.hasNext();) {
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184 Object element = it.next();
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185 int removeIndex = wrappedList.indexOf(element);
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186 if (removeIndex !is -1) {
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187 wrappedList.remove(removeIndex);
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188 entries.add(Diffs.createListDiffEntry(removeIndex, false,
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189 element));
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190 }
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191 }
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192 if (entries.size() > 0)
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193 fireListChange(Diffs.createListDiff(cast(ListDiffEntry[]) entries
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194 .toArray(new ListDiffEntry[entries.size()])));
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195 return entries.size() > 0;
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196 }
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197
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198 public bool retainAll(Collection c) {
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199 checkRealm();
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200 List entries = new ArrayList();
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201 int removeIndex = 0;
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202 for (Iterator it = wrappedList.iterator(); it.hasNext();) {
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203 Object element = it.next();
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204 if (!c.contains(element)) {
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205 entries.add(Diffs.createListDiffEntry(removeIndex, false,
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206 element));
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207 it.remove();
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208 } else {
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209 // only increment if we haven't removed the current element
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210 removeIndex++;
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211 }
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212 }
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213 if (entries.size() > 0)
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214 fireListChange(Diffs.createListDiff(cast(ListDiffEntry[]) entries
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215 .toArray(new ListDiffEntry[entries.size()])));
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216 return entries.size() > 0;
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217 }
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218
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219 public void clear() {
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220 checkRealm();
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221 List entries = new ArrayList();
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222 for (Iterator it = wrappedList.iterator(); it.hasNext();) {
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223 Object element = it.next();
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224 // always report 0 as the remove index
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225 entries.add(Diffs.createListDiffEntry(0, false, element));
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226 it.remove();
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227 }
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228 fireListChange(Diffs.createListDiff(cast(ListDiffEntry[]) entries
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229 .toArray(new ListDiffEntry[entries.size()])));
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230 }
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231
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232 /**
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233 * @param elementType
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234 * can be <code>null</code>
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235 * @return new list with the default realm.
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236 */
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237 public static WritableList withElementType(Object elementType) {
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238 return new WritableList(Realm.getDefault(), new ArrayList(),
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239 elementType);
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240 }
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241 }