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annotate org.eclipse.core.databinding.beans/src/org/eclipse/core/internal/databinding/beans/JavaBeanObservableList.d @ 98:48d4ee626868

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rm databinding.observable seems to be duplicate, databinding.beans now building
author Frank Benoit <benoit@tionex.de>
date Wed, 22 Apr 2009 07:30:21 +0200
parents c86eb8b3098e
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 171616
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11 * Matthew Hall - bugs 208858, 221351, 213145, 223164, 244098
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12 * Mike Evans - bug 217558
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13 *******************************************************************************/
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14
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15 module org.eclipse.core.internal.databinding.beans.JavaBeanObservableList;
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16 import org.eclipse.core.internal.databinding.beans.ListenerSupport;
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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.beans.PropertyChangeListener;
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21 import java.beans.PropertyDescriptor;
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22 import java.lang.reflect.Array;
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23 import java.lang.reflect.InvocationTargetException;
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24 import java.lang.reflect.Method;
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25 import java.util.ArrayList;
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26 import java.util.Arrays;
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27 import java.util.Collection;
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28 import java.util.Iterator;
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29 import java.util.List;
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30 static import java.beans.PropertyChangeEvent;
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31
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32 import org.eclipse.core.databinding.BindingException;
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33 import org.eclipse.core.databinding.beans.IBeanObservable;
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34 import org.eclipse.core.databinding.observable.Diffs;
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35 import org.eclipse.core.databinding.observable.Realm;
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36 import org.eclipse.core.databinding.observable.list.ListDiffEntry;
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37 import org.eclipse.core.databinding.observable.list.ObservableList;
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38
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39 /**
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40 * @since 1.0
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41 *
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42 */
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43 public class JavaBeanObservableList : ObservableList ,
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44 IBeanObservable {
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45
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46 private final Object object;
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47
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48 private bool updating = false;
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49
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50 private PropertyDescriptor descriptor;
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51
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52 private ListenerSupport listenerSupport;
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53
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54 /**
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55 * @param realm
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56 * @param object
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57 * @param descriptor
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58 * @param elementType
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59 */
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60 public this(Realm realm, Object object,
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61 PropertyDescriptor descriptor, Class elementType) {
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62 this(realm, object, descriptor, elementType, true);
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63 }
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64
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65 /**
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66 * @param realm
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67 * @param object
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68 * @param descriptor
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69 * @param elementType
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70 * @param attachListeners
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71 */
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72 public this(Realm realm, Object object,
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73 PropertyDescriptor descriptor, Class elementType,
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74 bool attachListeners) {
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75
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76 super(realm, new ArrayList(), elementType);
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77 this.object = object;
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78 this.descriptor = descriptor;
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79
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80 if (attachListeners) {
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81 PropertyChangeListener listener = new class() PropertyChangeListener {
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82 public void propertyChange(java.beans.PropertyChangeEvent.PropertyChangeEvent event) {
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83 if (!updating) {
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84 getRealm().exec(new class() Runnable {
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85 public void run() {
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86 updateWrappedList(new ArrayList(Arrays
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87 .asList(getValues())));
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88 }
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89 });
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90 }
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91 }
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92 };
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93 this.listenerSupport = new ListenerSupport(listener,
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94 descriptor.getName());
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95 listenerSupport.hookListener(this.object);
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96 }
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97
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98 // initialize list without firing events
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99 wrappedList.addAll(Arrays.asList(getValues()));
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100 }
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101
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102 public void dispose() {
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103 if (listenerSupport !is null) {
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104 listenerSupport.dispose();
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105 listenerSupport = null;
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106 }
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107 super.dispose();
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108 }
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109
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110 private Object primGetValues() {
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111 Exception ex = null;
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112 try {
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113 Method readMethod = descriptor.getReadMethod();
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114 if (!readMethod.isAccessible()) {
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115 readMethod.setAccessible(true);
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116 }
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117 return readMethod.invoke(object, new Object[0]);
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118 } catch (IllegalArgumentException e) {
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119 ex = e;
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120 } catch (IllegalAccessException e) {
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121 ex = e;
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122 } catch (InvocationTargetException e) {
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123 ex = e;
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124 }
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125 throw new BindingException("Could not read collection values", ex); //$NON-NLS-1$
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126 }
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127
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128 private Object[] getValues() {
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129 Object[] values = null;
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130
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131 Object result = primGetValues();
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132 if (descriptor.getPropertyType().isArray())
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133 values = arrayFromObject!(Object)( result );
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134 else {
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135 // TODO add jUnit for POJO (var. SettableValue) collections
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136 Collection list = cast(Collection) result;
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137 if (list !is null) {
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138 values = list.toArray();
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139 }
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140 }
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141 if (values is null)
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142 values = new Object[0];
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143 return values;
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144 }
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145
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146 public Object getObserved() {
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147 return object;
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148 }
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149
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150 public PropertyDescriptor getPropertyDescriptor() {
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151 return descriptor;
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152 }
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153
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154 private void setValues() {
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155 if (descriptor.getPropertyType().isArray()) {
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156 Class componentType = descriptor.getPropertyType()
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157 .getComponentType();
98
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diff changeset
158 Object[] newArray = arrayFromObject!(Object)( Array.newInstance(componentType,
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diff changeset
159 wrappedList.size()));
95
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160 wrappedList.toArray(newArray);
98
48d4ee626868 rm databinding.observable seems to be duplicate, databinding.beans now building
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diff changeset
161 primSetValues(new ArrayWrapperObject(newArray));
95
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162 } else {
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163 // assume that it is a java.util.List
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164 primSetValues(new ArrayList(wrappedList));
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165 }
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166 }
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167
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168 private void primSetValues(Object newValue) {
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169 Exception ex = null;
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170 try {
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171 Method writeMethod = descriptor.getWriteMethod();
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172 if (!writeMethod.isAccessible()) {
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173 writeMethod.setAccessible(true);
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174 }
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175 writeMethod.invoke(object, [ newValue ]);
95
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176 return;
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177 } catch (IllegalArgumentException e) {
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178 ex = e;
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179 } catch (IllegalAccessException e) {
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180 ex = e;
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181 } catch (InvocationTargetException e) {
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182 ex = e;
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183 }
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184 throw new BindingException("Could not write collection values", ex); //$NON-NLS-1$
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185 }
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186
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187 public Object set(int index, Object element) {
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188 getterCalled();
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189 updating = true;
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190 try {
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191 Object oldElement = wrappedList.set(index, element);
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192 setValues();
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193 fireListChange(Diffs.createListDiff(Diffs.createListDiffEntry(
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194 index, false, oldElement), Diffs.createListDiffEntry(index,
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195 true, element)));
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196 return oldElement;
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197 } finally {
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198 updating = false;
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199 }
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200 }
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201
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202 public Object move(int oldIndex, int newIndex) {
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203 getterCalled();
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204 updating = true;
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205 try {
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206 int size = wrappedList.size();
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207 if (oldIndex < 0 || oldIndex >= size)
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208 throw new IndexOutOfBoundsException(
98
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diff changeset
209 Format("oldIndex: {}, size:{}", oldIndex, size)); //$NON-NLS-1$ //$NON-NLS-2$
95
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210 if (newIndex < 0 || newIndex >= size)
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211 throw new IndexOutOfBoundsException(
98
48d4ee626868 rm databinding.observable seems to be duplicate, databinding.beans now building
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diff changeset
212 Format("newIndex: {}, size:{}", newIndex, size)); //$NON-NLS-1$ //$NON-NLS-2$
95
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213 if (oldIndex is newIndex)
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214 return wrappedList.get(oldIndex);
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215 Object element = wrappedList.remove(oldIndex);
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216 wrappedList.add(newIndex, element);
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217 setValues();
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218 fireListChange(Diffs.createListDiff(Diffs.createListDiffEntry(
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219 oldIndex, false, element), Diffs.createListDiffEntry(
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220 newIndex, true, element)));
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221 return element;
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222 } finally {
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223 updating = false;
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224 }
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225 }
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226
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227 public Object remove(int index) {
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228 getterCalled();
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229 updating = true;
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230 try {
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231 Object oldElement = wrappedList.remove(index);
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232 setValues();
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233 fireListChange(Diffs.createListDiff(Diffs.createListDiffEntry(
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diff changeset
234 index, false, oldElement)));
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235 return oldElement;
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236 } finally {
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237 updating = false;
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238 }
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239 }
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240
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241 public bool add(Object element) {
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242 updating = true;
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243 try {
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244 int index = wrappedList.size();
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245 bool result = wrappedList.add(element);
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246 setValues();
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247 fireListChange(Diffs.createListDiff(Diffs.createListDiffEntry(
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248 index, true, element)));
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249 return result;
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250 } finally {
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251 updating = false;
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252 }
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253 }
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254
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255 public void add(int index, Object element) {
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256 updating = true;
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diff changeset
257 try {
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diff changeset
258 wrappedList.add(index, element);
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259 setValues();
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diff changeset
260 fireListChange(Diffs.createListDiff(Diffs.createListDiffEntry(
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diff changeset
261 index, true, element)));
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diff changeset
262 } finally {
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diff changeset
263 updating = false;
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diff changeset
264 }
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parents:
diff changeset
265 }
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diff changeset
266
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267 public bool addAll(Collection c) {
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diff changeset
268 if (c.isEmpty()) {
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diff changeset
269 return false;
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parents:
diff changeset
270 }
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diff changeset
271 updating = true;
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diff changeset
272 try {
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diff changeset
273 int index = wrappedList.size();
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diff changeset
274 bool result = wrappedList.addAll(c);
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diff changeset
275 setValues();
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parents:
diff changeset
276 ListDiffEntry[] entries = new ListDiffEntry[c.size()];
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diff changeset
277 int i = 0;
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diff changeset
278 for (Iterator it = c.iterator(); it.hasNext();) {
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diff changeset
279 Object o = it.next();
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diff changeset
280 entries[i++] = Diffs.createListDiffEntry(index++, true, o);
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diff changeset
281 }
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diff changeset
282 fireListChange(Diffs.createListDiff(entries));
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diff changeset
283 return result;
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diff changeset
284 } finally {
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diff changeset
285 updating = false;
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diff changeset
286 }
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diff changeset
287 }
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diff changeset
288
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diff changeset
289 public bool addAll(int index, Collection c) {
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diff changeset
290 if (c.isEmpty()) {
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diff changeset
291 return false;
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diff changeset
292 }
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diff changeset
293 updating = true;
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diff changeset
294 try {
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diff changeset
295 bool result = wrappedList.addAll(index, c);
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diff changeset
296 setValues();
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parents:
diff changeset
297 ListDiffEntry[] entries = new ListDiffEntry[c.size()];
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diff changeset
298 int i = 0;
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diff changeset
299 for (Iterator it = c.iterator(); it.hasNext();) {
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parents:
diff changeset
300 Object o = it.next();
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parents:
diff changeset
301 entries[i++] = Diffs.createListDiffEntry(index++, true, o);
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diff changeset
302 }
6208d4f6a277 Added trees for databinding.beans and observable
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parents:
diff changeset
303 fireListChange(Diffs.createListDiff(entries));
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parents:
diff changeset
304 return result;
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parents:
diff changeset
305 } finally {
6208d4f6a277 Added trees for databinding.beans and observable
Frank Benoit <benoit@tionex.de>
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306 updating = false;
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307 }
6208d4f6a277 Added trees for databinding.beans and observable
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308 }
6208d4f6a277 Added trees for databinding.beans and observable
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309
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310 public bool remove(Object o) {
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311 getterCalled();
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312 int index = wrappedList.indexOf(o);
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313 if (index is -1) {
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314 return false;
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315 }
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316 updating = true;
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317 try {
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318 Object oldElement = wrappedList.remove(index);
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319 setValues();
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320 fireListChange(Diffs.createListDiff(Diffs.createListDiffEntry(
6208d4f6a277 Added trees for databinding.beans and observable
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321 index, false, oldElement)));
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322 return true;
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323 } finally {
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324 updating = false;
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325 }
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326 }
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327
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328 public bool removeAll(Collection c) {
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329 getterCalled();
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330 bool changed = false;
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331 updating = true;
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332 try {
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333 List diffEntries = new ArrayList();
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334 for (Iterator it = c.iterator(); it.hasNext();) {
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335 Object o = it.next();
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336 int index = wrappedList.indexOf(o);
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337 if (index !is -1) {
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338 changed = true;
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339 Object oldElement = wrappedList.remove(index);
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340 diffEntries.add(Diffs.createListDiffEntry(index, false,
6208d4f6a277 Added trees for databinding.beans and observable
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341 oldElement));
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342 }
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343 }
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344 if (changed) {
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345 setValues();
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346 fireListChange(Diffs
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347 .createListDiff(cast(ListDiffEntry[]) diffEntries
6208d4f6a277 Added trees for databinding.beans and observable
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348 .toArray(new ListDiffEntry[diffEntries.size()])));
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349 }
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350 return changed;
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351 } finally {
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352 updating = false;
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353 }
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354 }
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355
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356 public bool retainAll(Collection c) {
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357 getterCalled();
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358 bool changed = false;
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359 updating = true;
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diff changeset
360 try {
6208d4f6a277 Added trees for databinding.beans and observable
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diff changeset
361 List diffEntries = new ArrayList();
6208d4f6a277 Added trees for databinding.beans and observable
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diff changeset
362 int index = 0;
6208d4f6a277 Added trees for databinding.beans and observable
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diff changeset
363 for (Iterator it = wrappedList.iterator(); it.hasNext();) {
6208d4f6a277 Added trees for databinding.beans and observable
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diff changeset
364 Object o = it.next();
6208d4f6a277 Added trees for databinding.beans and observable
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diff changeset
365 bool retain = c.contains(o);
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diff changeset
366 if (retain) {
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diff changeset
367 index++;
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diff changeset
368 } else {
6208d4f6a277 Added trees for databinding.beans and observable
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parents:
diff changeset
369 changed = true;
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diff changeset
370 it.remove();
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parents:
diff changeset
371 diffEntries.add(Diffs.createListDiffEntry(index, false, o));
6208d4f6a277 Added trees for databinding.beans and observable
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diff changeset
372 }
6208d4f6a277 Added trees for databinding.beans and observable
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parents:
diff changeset
373 }
6208d4f6a277 Added trees for databinding.beans and observable
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parents:
diff changeset
374 if (changed) {
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diff changeset
375 setValues();
6208d4f6a277 Added trees for databinding.beans and observable
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parents:
diff changeset
376 fireListChange(Diffs
6208d4f6a277 Added trees for databinding.beans and observable
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diff changeset
377 .createListDiff(cast(ListDiffEntry[]) diffEntries
6208d4f6a277 Added trees for databinding.beans and observable
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diff changeset
378 .toArray(new ListDiffEntry[diffEntries.size()])));
6208d4f6a277 Added trees for databinding.beans and observable
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parents:
diff changeset
379 }
6208d4f6a277 Added trees for databinding.beans and observable
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parents:
diff changeset
380 return changed;
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parents:
diff changeset
381 } finally {
6208d4f6a277 Added trees for databinding.beans and observable
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parents:
diff changeset
382 updating = false;
6208d4f6a277 Added trees for databinding.beans and observable
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
383 }
6208d4f6a277 Added trees for databinding.beans and observable
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
384 }
6208d4f6a277 Added trees for databinding.beans and observable
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
385
6208d4f6a277 Added trees for databinding.beans and observable
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diff changeset
386 public void clear() {
6208d4f6a277 Added trees for databinding.beans and observable
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diff changeset
387 updating = true;
6208d4f6a277 Added trees for databinding.beans and observable
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parents:
diff changeset
388 try {
6208d4f6a277 Added trees for databinding.beans and observable
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parents:
diff changeset
389 List diffEntries = new ArrayList();
6208d4f6a277 Added trees for databinding.beans and observable
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parents:
diff changeset
390 for (Iterator it = wrappedList.iterator(); it.hasNext();) {
6208d4f6a277 Added trees for databinding.beans and observable
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parents:
diff changeset
391 Object o = it.next();
6208d4f6a277 Added trees for databinding.beans and observable
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parents:
diff changeset
392 diffEntries.add(Diffs.createListDiffEntry(0, false, o));
6208d4f6a277 Added trees for databinding.beans and observable
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parents:
diff changeset
393 }
6208d4f6a277 Added trees for databinding.beans and observable
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
394 wrappedList.clear();
6208d4f6a277 Added trees for databinding.beans and observable
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
395 setValues();
6208d4f6a277 Added trees for databinding.beans and observable
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
396 fireListChange(Diffs.createListDiff(cast(ListDiffEntry[]) diffEntries
6208d4f6a277 Added trees for databinding.beans and observable
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
397 .toArray(new ListDiffEntry[diffEntries.size()])));
6208d4f6a277 Added trees for databinding.beans and observable
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
398 } finally {
6208d4f6a277 Added trees for databinding.beans and observable
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
399 updating = false;
6208d4f6a277 Added trees for databinding.beans and observable
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
400 }
6208d4f6a277 Added trees for databinding.beans and observable
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
401 }
6208d4f6a277 Added trees for databinding.beans and observable
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
402
6208d4f6a277 Added trees for databinding.beans and observable
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
403 }