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annotate org.eclipse.core.databinding.beans/src/org/eclipse/core/internal/databinding/beans/JavaBeanObservableSet.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 - bug 171616
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11 * Matthew Hall - bugs 221351, 223164, 244098
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12 *******************************************************************************/
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13
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14 module org.eclipse.core.internal.databinding.beans.JavaBeanObservableSet;
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15
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16 import java.lang.all;
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17
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18 import java.beans.PropertyChangeListener;
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19 import java.beans.PropertyDescriptor;
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20 import java.lang.reflect.Array;
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21 import java.lang.reflect.InvocationTargetException;
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22 import java.lang.reflect.Method;
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23 import java.util.Arrays;
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24 import java.util.Collection;
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25 import java.util.Collections;
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26 import java.util.HashSet;
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27 import java.util.Iterator;
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28 import java.util.Set;
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29
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30 import org.eclipse.core.databinding.BindingException;
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31 import org.eclipse.core.databinding.beans.IBeanObservable;
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32 import org.eclipse.core.databinding.observable.Diffs;
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33 import org.eclipse.core.databinding.observable.Realm;
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34 import org.eclipse.core.databinding.observable.set.ObservableSet;
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35 import org.eclipse.core.runtime.Assert;
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36
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37 /**
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38 * @since 1.0
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39 *
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40 */
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41 public class JavaBeanObservableSet : ObservableSet , IBeanObservable {
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42
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43 private final Object object;
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44
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45 private bool updating = false;
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46
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47 private PropertyDescriptor descriptor;
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48
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49 private ListenerSupport listenerSupport;
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50
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51 /**
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52 * @param realm
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53 * @param object
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54 * @param descriptor
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55 * @param elementType
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56 */
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57 public this(Realm realm, Object object,
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58 PropertyDescriptor descriptor, Class elementType) {
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59 this(realm, object, descriptor, elementType, true);
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60 }
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61
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62 /**
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63 * @param realm
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64 * @param object
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65 * @param descriptor
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66 * @param elementType
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67 * @param attachListeners
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68 */
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69 public this(Realm realm, Object object,
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70 PropertyDescriptor descriptor, Class elementType,
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71 bool attachListeners) {
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72 super(realm, new HashSet(), elementType);
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73 this.object = object;
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74 this.descriptor = descriptor;
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75 if (attachListeners) {
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76 PropertyChangeListener listener = new class() PropertyChangeListener {
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77 public void propertyChange(java.beans.PropertyChangeEvent event) {
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78 if (!updating) {
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79 getRealm().exec(new class() Runnable {
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80 public void run() {
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81 Set newElements = new HashSet(Arrays
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82 .asList(getValues()));
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83 Set addedElements = new HashSet(newElements);
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84 Set removedElements = new HashSet(wrappedSet);
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85 // remove all new elements from old elements to
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86 // compute
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87 // the removed elements
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88 removedElements.removeAll(newElements);
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89 addedElements.removeAll(wrappedSet);
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90 wrappedSet = newElements;
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91 fireSetChange(Diffs.createSetDiff(
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92 addedElements, removedElements));
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93 }
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94 });
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95 }
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96 }
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97 };
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98 this.listenerSupport = new ListenerSupport(listener, descriptor
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99 .getName());
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100 listenerSupport.hookListener(this.object);
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101 }
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102
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103 wrappedSet.addAll(Arrays.asList(getValues()));
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104 }
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105
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106 private Object primGetValues() {
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107 try {
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108 Method readMethod = descriptor.getReadMethod();
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109 if (!readMethod.isAccessible()) {
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110 readMethod.setAccessible(true);
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111 }
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112 return readMethod.invoke(object, new Object[0]);
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113 } catch (IllegalArgumentException e) {
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114 } catch (IllegalAccessException e) {
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115 } catch (InvocationTargetException e) {
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116 }
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117 Assert.isTrue(false, "Could not read collection values"); //$NON-NLS-1$
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118 return null;
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119 }
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120
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121 private Object[] getValues() {
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122 Object[] values = null;
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123
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124 Object result = primGetValues();
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125 if (descriptor.getPropertyType().isArray())
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126 values = cast(Object[]) result;
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127 else {
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128 // TODO add jUnit for POJO (var. SettableValue) collections
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129 Collection list = cast(Collection) result;
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130 if (list !is null)
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131 values = list.toArray();
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132 }
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133 if (values is null)
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134 values = new Object[0];
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135 return values;
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136 }
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137
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138 private void setValues() {
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139 if (descriptor.getPropertyType().isArray()) {
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140 Class componentType = descriptor.getPropertyType()
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141 .getComponentType();
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142 Object[] newArray = cast(Object[]) Array.newInstance(componentType,
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143 wrappedSet.size());
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144 wrappedSet.toArray(newArray);
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145 primSetValues(newArray);
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146 } else {
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147 // assume that it is a java.util.Set
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148 primSetValues(new HashSet(wrappedSet));
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149 }
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150 }
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151
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152 public bool add(Object o) {
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parents:
diff changeset
153 getterCalled();
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parents:
diff changeset
154 updating = true;
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Frank Benoit <benoit@tionex.de>
parents:
diff changeset
155 try {
6208d4f6a277 Added trees for databinding.beans and observable
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parents:
diff changeset
156 bool added = wrappedSet.add(o);
6208d4f6a277 Added trees for databinding.beans and observable
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parents:
diff changeset
157 if (added) {
6208d4f6a277 Added trees for databinding.beans and observable
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parents:
diff changeset
158 setValues();
6208d4f6a277 Added trees for databinding.beans and observable
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
159 fireSetChange(Diffs.createSetDiff(Collections.singleton(o),
6208d4f6a277 Added trees for databinding.beans and observable
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
160 Collections.EMPTY_SET));
6208d4f6a277 Added trees for databinding.beans and observable
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
161 }
6208d4f6a277 Added trees for databinding.beans and observable
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parents:
diff changeset
162 return added;
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Frank Benoit <benoit@tionex.de>
parents:
diff changeset
163 } finally {
6208d4f6a277 Added trees for databinding.beans and observable
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parents:
diff changeset
164 updating = false;
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parents:
diff changeset
165 }
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Frank Benoit <benoit@tionex.de>
parents:
diff changeset
166 }
6208d4f6a277 Added trees for databinding.beans and observable
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
167
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Frank Benoit <benoit@tionex.de>
parents:
diff changeset
168 public bool remove(Object o) {
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parents:
diff changeset
169 getterCalled();
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parents:
diff changeset
170 updating = true;
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Frank Benoit <benoit@tionex.de>
parents:
diff changeset
171 try {
6208d4f6a277 Added trees for databinding.beans and observable
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parents:
diff changeset
172 bool removed = wrappedSet.remove(o);
6208d4f6a277 Added trees for databinding.beans and observable
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
173 if (removed) {
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Frank Benoit <benoit@tionex.de>
parents:
diff changeset
174 setValues();
6208d4f6a277 Added trees for databinding.beans and observable
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
175 fireSetChange(Diffs.createSetDiff(Collections.EMPTY_SET,
6208d4f6a277 Added trees for databinding.beans and observable
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
176 Collections.singleton(o)));
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parents:
diff changeset
177 }
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parents:
diff changeset
178 return removed;
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parents:
diff changeset
179 } finally {
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parents:
diff changeset
180 updating = false;
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parents:
diff changeset
181 }
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Frank Benoit <benoit@tionex.de>
parents:
diff changeset
182 }
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parents:
diff changeset
183
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parents:
diff changeset
184 public bool addAll(Collection c) {
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185 getterCalled();
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parents:
diff changeset
186 updating = true;
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parents:
diff changeset
187 try {
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diff changeset
188 Set additions = new HashSet();
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diff changeset
189 for (Iterator iterator = c.iterator(); iterator.hasNext();) {
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parents:
diff changeset
190 Object element = iterator.next();
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parents:
diff changeset
191 if (wrappedSet.add(element))
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parents:
diff changeset
192 additions.add(element);
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parents:
diff changeset
193 }
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parents:
diff changeset
194 bool changed = !additions.isEmpty();
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parents:
diff changeset
195 if (changed) {
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Frank Benoit <benoit@tionex.de>
parents:
diff changeset
196 setValues();
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Frank Benoit <benoit@tionex.de>
parents:
diff changeset
197 fireSetChange(Diffs.createSetDiff(additions,
6208d4f6a277 Added trees for databinding.beans and observable
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
198 Collections.EMPTY_SET));
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parents:
diff changeset
199 }
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parents:
diff changeset
200 return changed;
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parents:
diff changeset
201 } finally {
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parents:
diff changeset
202 updating = false;
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parents:
diff changeset
203 }
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Frank Benoit <benoit@tionex.de>
parents:
diff changeset
204 }
6208d4f6a277 Added trees for databinding.beans and observable
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
205
6208d4f6a277 Added trees for databinding.beans and observable
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parents:
diff changeset
206 public bool removeAll(Collection c) {
6208d4f6a277 Added trees for databinding.beans and observable
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diff changeset
207 getterCalled();
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parents:
diff changeset
208 updating = true;
6208d4f6a277 Added trees for databinding.beans and observable
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
209 try {
6208d4f6a277 Added trees for databinding.beans and observable
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parents:
diff changeset
210 Set removals = new HashSet();
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parents:
diff changeset
211 for (Iterator iterator = c.iterator(); iterator.hasNext();) {
6208d4f6a277 Added trees for databinding.beans and observable
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parents:
diff changeset
212 Object element = iterator.next();
6208d4f6a277 Added trees for databinding.beans and observable
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parents:
diff changeset
213 if (wrappedSet.remove(element))
6208d4f6a277 Added trees for databinding.beans and observable
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parents:
diff changeset
214 removals.add(element);
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parents:
diff changeset
215 }
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parents:
diff changeset
216 bool changed = !removals.isEmpty();
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parents:
diff changeset
217 if (changed) {
6208d4f6a277 Added trees for databinding.beans and observable
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parents:
diff changeset
218 setValues();
6208d4f6a277 Added trees for databinding.beans and observable
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parents:
diff changeset
219 fireSetChange(Diffs.createSetDiff(Collections.EMPTY_SET,
6208d4f6a277 Added trees for databinding.beans and observable
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
220 removals));
6208d4f6a277 Added trees for databinding.beans and observable
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
221 }
6208d4f6a277 Added trees for databinding.beans and observable
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parents:
diff changeset
222 return changed;
6208d4f6a277 Added trees for databinding.beans and observable
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parents:
diff changeset
223 } finally {
6208d4f6a277 Added trees for databinding.beans and observable
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parents:
diff changeset
224 updating = false;
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parents:
diff changeset
225 }
6208d4f6a277 Added trees for databinding.beans and observable
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parents:
diff changeset
226 }
6208d4f6a277 Added trees for databinding.beans and observable
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
227
6208d4f6a277 Added trees for databinding.beans and observable
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parents:
diff changeset
228 public bool retainAll(Collection c) {
6208d4f6a277 Added trees for databinding.beans and observable
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parents:
diff changeset
229 getterCalled();
6208d4f6a277 Added trees for databinding.beans and observable
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parents:
diff changeset
230 updating = true;
6208d4f6a277 Added trees for databinding.beans and observable
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
231 try {
6208d4f6a277 Added trees for databinding.beans and observable
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
232 Set removals = new HashSet();
6208d4f6a277 Added trees for databinding.beans and observable
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
233 for (Iterator iterator = wrappedSet.iterator(); iterator.hasNext();) {
6208d4f6a277 Added trees for databinding.beans and observable
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
234 Object element = iterator.next();
6208d4f6a277 Added trees for databinding.beans and observable
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
235 if (!c.contains(element)) {
6208d4f6a277 Added trees for databinding.beans and observable
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
236 iterator.remove();
6208d4f6a277 Added trees for databinding.beans and observable
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
237 removals.add(element);
6208d4f6a277 Added trees for databinding.beans and observable
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
238 }
6208d4f6a277 Added trees for databinding.beans and observable
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
239 }
6208d4f6a277 Added trees for databinding.beans and observable
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
240 bool changed = !removals.isEmpty();
6208d4f6a277 Added trees for databinding.beans and observable
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
241 if (changed) {
6208d4f6a277 Added trees for databinding.beans and observable
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
242 setValues();
6208d4f6a277 Added trees for databinding.beans and observable
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
243 fireSetChange(Diffs.createSetDiff(Collections.EMPTY_SET,
6208d4f6a277 Added trees for databinding.beans and observable
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
244 removals));
6208d4f6a277 Added trees for databinding.beans and observable
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
245 }
6208d4f6a277 Added trees for databinding.beans and observable
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
246 return changed;
6208d4f6a277 Added trees for databinding.beans and observable
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
247 } finally {
6208d4f6a277 Added trees for databinding.beans and observable
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
248 updating = false;
6208d4f6a277 Added trees for databinding.beans and observable
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
249 }
6208d4f6a277 Added trees for databinding.beans and observable
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
250 }
6208d4f6a277 Added trees for databinding.beans and observable
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
251
6208d4f6a277 Added trees for databinding.beans and observable
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
252 public void clear() {
6208d4f6a277 Added trees for databinding.beans and observable
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
253 getterCalled();
6208d4f6a277 Added trees for databinding.beans and observable
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
254 if (wrappedSet.isEmpty())
6208d4f6a277 Added trees for databinding.beans and observable
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
255 return;
6208d4f6a277 Added trees for databinding.beans and observable
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
256
6208d4f6a277 Added trees for databinding.beans and observable
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
257 updating = true;
6208d4f6a277 Added trees for databinding.beans and observable
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
258 try {
6208d4f6a277 Added trees for databinding.beans and observable
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
259 Set removals = new HashSet(wrappedSet);
6208d4f6a277 Added trees for databinding.beans and observable
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
260 wrappedSet.clear();
6208d4f6a277 Added trees for databinding.beans and observable
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
261 setValues();
6208d4f6a277 Added trees for databinding.beans and observable
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
262 fireSetChange(Diffs.createSetDiff(Collections.EMPTY_SET, removals));
6208d4f6a277 Added trees for databinding.beans and observable
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
263 } finally {
6208d4f6a277 Added trees for databinding.beans and observable
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
264 updating = false;
6208d4f6a277 Added trees for databinding.beans and observable
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
265 }
6208d4f6a277 Added trees for databinding.beans and observable
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
266 }
6208d4f6a277 Added trees for databinding.beans and observable
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
267
6208d4f6a277 Added trees for databinding.beans and observable
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
268 private void primSetValues(Object newValue) {
6208d4f6a277 Added trees for databinding.beans and observable
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
269 Exception ex = null;
6208d4f6a277 Added trees for databinding.beans and observable
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
270 try {
6208d4f6a277 Added trees for databinding.beans and observable
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
271 Method writeMethod = descriptor.getWriteMethod();
6208d4f6a277 Added trees for databinding.beans and observable
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
272 if (!writeMethod.isAccessible()) {
6208d4f6a277 Added trees for databinding.beans and observable
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
273 writeMethod.setAccessible(true);
6208d4f6a277 Added trees for databinding.beans and observable
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
274 }
6208d4f6a277 Added trees for databinding.beans and observable
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
275 writeMethod.invoke(object, new Object[] { newValue });
6208d4f6a277 Added trees for databinding.beans and observable
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
276 return;
6208d4f6a277 Added trees for databinding.beans and observable
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
277 } catch (IllegalArgumentException e) {
6208d4f6a277 Added trees for databinding.beans and observable
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
278 ex = e;
6208d4f6a277 Added trees for databinding.beans and observable
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
279 } catch (IllegalAccessException e) {
6208d4f6a277 Added trees for databinding.beans and observable
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
280 ex = e;
6208d4f6a277 Added trees for databinding.beans and observable
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
281 } catch (InvocationTargetException e) {
6208d4f6a277 Added trees for databinding.beans and observable
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
282 ex = e;
6208d4f6a277 Added trees for databinding.beans and observable
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
283 }
6208d4f6a277 Added trees for databinding.beans and observable
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
284 throw new BindingException("Could not write collection values", ex); //$NON-NLS-1$
6208d4f6a277 Added trees for databinding.beans and observable
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
285 }
6208d4f6a277 Added trees for databinding.beans and observable
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
286
6208d4f6a277 Added trees for databinding.beans and observable
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
287 public Object getObserved() {
6208d4f6a277 Added trees for databinding.beans and observable
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
288 return object;
6208d4f6a277 Added trees for databinding.beans and observable
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
289 }
6208d4f6a277 Added trees for databinding.beans and observable
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
290
6208d4f6a277 Added trees for databinding.beans and observable
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
291 public PropertyDescriptor getPropertyDescriptor() {
6208d4f6a277 Added trees for databinding.beans and observable
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
292 return descriptor;
6208d4f6a277 Added trees for databinding.beans and observable
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
293 }
6208d4f6a277 Added trees for databinding.beans and observable
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
294
6208d4f6a277 Added trees for databinding.beans and observable
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
295 public synchronized void dispose() {
6208d4f6a277 Added trees for databinding.beans and observable
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
296 if (listenerSupport !is null) {
6208d4f6a277 Added trees for databinding.beans and observable
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
297 listenerSupport.dispose();
6208d4f6a277 Added trees for databinding.beans and observable
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
298 listenerSupport = null;
6208d4f6a277 Added trees for databinding.beans and observable
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
299 }
6208d4f6a277 Added trees for databinding.beans and observable
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
300
6208d4f6a277 Added trees for databinding.beans and observable
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
301 super.dispose();
6208d4f6a277 Added trees for databinding.beans and observable
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
302 }
6208d4f6a277 Added trees for databinding.beans and observable
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
303 }