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annotate org.eclipse.jface.examples.databinding/src/org/eclipse/jface/examples/databinding/snippets/Snippet026AnonymousBeanProperties.d @ 99:5d5bd660917f

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build some databind snippets
author Frank Benoit <benoit@tionex.de>
date Wed, 22 Apr 2009 18:59:26 +0200
parents 6086085e153d
children e884642ad36e
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1 /*******************************************************************************
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2 * Copyright (c) 2008 Matthew Hall 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 * Matthew Hall - initial API and implementation (bug 247997)
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10 * Matthew Hall - bugs 261843, 260337, 265561
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11 ******************************************************************************/
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12
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13 module org.eclipse.jface.examples.databinding.snippets.Snippet026AnonymousBeanProperties;
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14
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15 import java.lang.all;
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16
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17 import java.beans.PropertyChangeEvent;
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18 import java.beans.PropertyChangeListener;
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19 import java.beans.PropertyChangeSupport;
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20 import java.util.Collections;
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21 import java.util.Iterator;
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22 import java.util.Set;
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23 import java.util.TreeSet;
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24
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25 import org.eclipse.core.databinding.DataBindingContext;
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26 import org.eclipse.core.databinding.beans.BeanProperties;
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27 import org.eclipse.core.databinding.observable.Realm;
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28 import org.eclipse.core.databinding.observable.set.SetDiff;
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29 import org.eclipse.core.databinding.observable.value.ComputedValue;
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30 import org.eclipse.core.databinding.observable.value.IObservableValue;
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31 import org.eclipse.core.databinding.property.INativePropertyListener;
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32 import org.eclipse.core.databinding.property.IProperty;
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33 import org.eclipse.core.databinding.property.ISimplePropertyListener;
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34 import org.eclipse.core.databinding.property.NativePropertyListener;
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35 import org.eclipse.core.databinding.property.set.DelegatingSetProperty;
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36 import org.eclipse.core.databinding.property.set.ISetProperty;
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37 import org.eclipse.core.databinding.property.set.SimpleSetProperty;
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38 import org.eclipse.jface.databinding.swt.SWTObservables;
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39 import org.eclipse.jface.databinding.swt.WidgetProperties;
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40 import org.eclipse.jface.databinding.viewers.ViewerProperties;
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41 import org.eclipse.jface.databinding.viewers.ViewerSupport;
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42 import org.eclipse.jface.viewers.ArrayContentProvider;
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43 import org.eclipse.jface.viewers.ComboViewer;
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44 import org.eclipse.jface.viewers.TreeViewer;
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45 import org.eclipse.swt.SWT;
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46 import org.eclipse.swt.layout.GridData;
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47 import org.eclipse.swt.layout.GridLayout;
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48 import org.eclipse.swt.widgets.Combo;
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49 import org.eclipse.swt.widgets.Display;
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50 import org.eclipse.swt.widgets.Label;
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51 import org.eclipse.swt.widgets.Shell;
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52 import org.eclipse.swt.widgets.Text;
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53 import org.eclipse.swt.widgets.Tree;
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54 import org.eclipse.swt.widgets.TreeColumn;
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55
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56 /**
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57 * @since 3.2
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58 *
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59 */
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60 public class Snippet026AnonymousBeanProperties {
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61 private ComboViewer statusViewer;
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62 private Combo combo;
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63 private Text nameText;
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64 private TreeViewer contactViewer;
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66 public static void main(String[] args) {
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67 Display display = new Display();
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68 Realm.runWithDefault(SWTObservables.getRealm(display), new Runnable() {
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69 public void run() {
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70 try {
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71 Snippet026AnonymousBeanProperties window = new Snippet026AnonymousBeanProperties();
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72 window.open();
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73 } catch (Exception e) {
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74 e.printStackTrace();
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75 }
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76 }
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77 });
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78 }
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79
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80 private ApplicationModel model;
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81 private Shell shell;
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82 private Tree tree;
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83
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84 // Minimal JavaBeans support
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85 public static abstract class AbstractModelObject {
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86 private PropertyChangeSupport propertyChangeSupport = new PropertyChangeSupport(
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87 this);
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88
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89 public void addPropertyChangeListener(PropertyChangeListener listener) {
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90 propertyChangeSupport.addPropertyChangeListener(listener);
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91 }
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93 public void addPropertyChangeListener(String propertyName,
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94 PropertyChangeListener listener) {
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95 propertyChangeSupport.addPropertyChangeListener(propertyName,
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96 listener);
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97 }
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98
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99 public void removePropertyChangeListener(PropertyChangeListener listener) {
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100 propertyChangeSupport.removePropertyChangeListener(listener);
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101 }
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103 public void removePropertyChangeListener(String propertyName,
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104 PropertyChangeListener listener) {
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105 propertyChangeSupport.removePropertyChangeListener(propertyName,
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106 listener);
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107 }
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109 protected void firePropertyChange(String propertyName, Object oldValue,
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110 Object newValue) {
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111 propertyChangeSupport.firePropertyChange(propertyName, oldValue,
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112 newValue);
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113 }
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114 }
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116 public static class ContactGroup extends AbstractModelObject implements
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117 Comparable {
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118 private String name;
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119 private Set contacts = new TreeSet();
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121 ContactGroup(String name) {
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122 this.name = checkNull(name);
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123 }
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125 private String checkNull(String string) {
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126 if (string == null)
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127 throw new NullPointerException();
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128 return string;
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129 }
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131 public String getName() {
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132 return name;
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133 }
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135 public void setName(String name) {
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136 firePropertyChange("name", this.name, this.name = checkNull(name));
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137 }
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139 public Set getContacts() {
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140 return new TreeSet(contacts);
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141 }
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143 public void addContact(Contact contact) {
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144 Set oldValue = getContacts();
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145 contacts.add(contact);
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146 Set newValue = getContacts();
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147 firePropertyChange("contacts", oldValue, newValue);
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148 }
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150 public void removeContact(Contact contact) {
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151 Set oldValue = getContacts();
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152 contacts.remove(contact);
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153 Set newValue = getContacts();
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154 firePropertyChange("contacts", oldValue, newValue);
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155 }
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156
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157 public int compareTo(Object o) {
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158 ContactGroup that = (ContactGroup) o;
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159 return this.name.compareTo(that.name);
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160 }
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161 }
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162
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163 public static class Contact extends AbstractModelObject implements
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164 Comparable {
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165 private String name;
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166 private String status;
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167
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168 private String checkNull(String string) {
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169 if (string == null)
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170 throw new NullPointerException();
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171 return string;
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172 }
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173
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174 public Contact(String name, String status) {
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175 this.name = checkNull(name);
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176 this.status = checkNull(status);
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177 }
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178
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179 public String getName() {
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180 return name;
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181 }
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182
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183 public void setName(String name) {
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184 firePropertyChange("name", this.name, this.name = checkNull(name));
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185 }
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186
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187 public String getStatus() {
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188 return status;
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189 }
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190
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191 public void setStatus(String status) {
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192 firePropertyChange("status", this.status,
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193 this.status = checkNull(status));
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194 }
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195
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196 public int compareTo(Object o) {
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197 Contact that = (Contact) o;
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198 int result = this.name.compareTo(that.name);
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199 if (result == 0)
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200 result = this.status.compareTo(that.status);
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201 return result;
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202 }
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203 }
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204
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205 public static class ApplicationModel extends AbstractModelObject {
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206 private Set groups = new TreeSet();
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207
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208 public Set getGroups() {
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209 return new TreeSet(groups);
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210 }
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211
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212 public void setGroups(Set groups) {
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213 Set oldValue = getGroups();
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214 this.groups = new TreeSet(groups);
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215 Set newValue = getGroups();
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216 firePropertyChange("groups", oldValue, newValue);
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217 }
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218 }
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219
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220 /**
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221 * Set property for the "contacts" property of a ContactGroup. Since
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222 * ContactGroup does not have a setContacts() method we have to write our
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223 * own property to apply set changes incrementally through the addContact
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224 * and removeContact methods.
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225 */
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226 public static class ContactGroupContactsProperty extends SimpleSetProperty {
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227 public Object getElementType() {
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228 return Contact.class;
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229 }
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230
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231 protected Set doGetSet(Object source) {
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232 if (source == null)
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233 return Collections.EMPTY_SET;
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234 return ((ContactGroup) source).getContacts();
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235 }
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236
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237 protected void doSetSet(Object source, Set set, SetDiff diff) {
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238 ContactGroup group = (ContactGroup) source;
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239 for (Iterator it = diff.getRemovals().iterator(); it.hasNext();) {
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240 Contact contact = (Contact) it.next();
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241 group.removeContact(contact);
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242 }
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243 for (Iterator it = diff.getAdditions().iterator(); it.hasNext();) {
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244 Contact contact = (Contact) it.next();
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245 group.addContact(contact);
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246 }
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247 }
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248
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249 public INativePropertyListener adaptListener(
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250 final ISimplePropertyListener listener) {
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251 return new Listener(this, listener);
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252 }
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253
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254 private class Listener extends NativePropertyListener implements
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255 PropertyChangeListener {
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256 Listener(IProperty property, ISimplePropertyListener listener) {
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257 super(property, listener);
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258 }
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259
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260 public void propertyChange(PropertyChangeEvent evt) {
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261 fireChange(evt.getSource(), null);
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262 }
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263
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264 protected void doAddTo(Object source) {
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265 ((ContactGroup) source).addPropertyChangeListener("contacts",
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266 this);
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267 }
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268
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269 protected void doRemoveFrom(Object source) {
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270 ((ContactGroup) source).removePropertyChangeListener(
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271 "contacts", this);
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272 }
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273 }
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274 }
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275
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276 public void open() {
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277 model = createDefaultModel();
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278
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279 final Display display = Display.getDefault();
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280 createContents();
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281 bindUI();
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282 shell.open();
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283 shell.layout();
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284 while (!shell.isDisposed()) {
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285 if (!display.readAndDispatch())
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286 display.sleep();
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287 }
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288 }
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289
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290 private static final String[] statuses = new String[] { "Online", "Idle",
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291 "Busy", "Offline" };
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292
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293 /**
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294 * @return
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295 */
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296 private ApplicationModel createDefaultModel() {
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297 ContactGroup swtGroup = new ContactGroup("SWT");
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298 swtGroup.addContact(new Contact("Steve Northover", "Busy"));
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299 swtGroup.addContact(new Contact("Grant Gayed", "Online"));
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300 swtGroup.addContact(new Contact("Veronika Irvine", "Offline"));
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301 swtGroup.addContact(new Contact("Mike Wilson", "Online"));
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302 swtGroup.addContact(new Contact("Christophe Cornu", "Idle"));
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303 swtGroup.addContact(new Contact("Lynne Kues", "Online"));
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304 swtGroup.addContact(new Contact("Silenio Quarti", "Idle"));
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305
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306 ContactGroup jdbGroup = new ContactGroup("JFace Data Binding");
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307 jdbGroup.addContact(new Contact("Boris Bokowski", "Online"));
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308 jdbGroup.addContact(new Contact("Matthew Hall", "Idle"));
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309
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310 Set groups = new TreeSet();
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311 groups.add(swtGroup);
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312 groups.add(jdbGroup);
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313 ApplicationModel model = new ApplicationModel();
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314 model.setGroups(groups);
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315
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316 return model;
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317 }
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318
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319 /**
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320 * Create contents of the window
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321 */
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322 protected void createContents() {
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323 shell = new Shell();
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324 shell.setSize(379, 393);
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325 shell.setText("Snippet026AnonymousBeanProperties");
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326 final GridLayout gridLayout = new GridLayout();
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327 gridLayout.numColumns = 4;
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328 shell.setLayout(gridLayout);
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329
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330 contactViewer = new TreeViewer(shell, SWT.BORDER);
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331 tree = contactViewer.getTree();
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332 tree.setHeaderVisible(true);
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333 tree.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true, 4, 1));
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334
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335 final TreeColumn nameColumn = new TreeColumn(tree, SWT.NONE);
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336 nameColumn.setWidth(163);
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337 nameColumn.setText("Name");
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338
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339 final TreeColumn newColumnTreeColumn = new TreeColumn(tree, SWT.NONE);
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340 newColumnTreeColumn.setWidth(100);
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341 newColumnTreeColumn.setText("Status");
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342
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343 final Label nameLabel = new Label(shell, SWT.NONE);
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344 nameLabel.setText("Name");
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345
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346 nameText = new Text(shell, SWT.BORDER);
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347 final GridData gd_nameText = new GridData(SWT.FILL, SWT.CENTER, true,
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348 false);
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349 nameText.setLayoutData(gd_nameText);
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350
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351 final Label statusLabel = new Label(shell, SWT.NONE);
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352 statusLabel.setLayoutData(new GridData());
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353 statusLabel.setText("Status");
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354
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355 statusViewer = new ComboViewer(shell, SWT.READ_ONLY);
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356 combo = statusViewer.getCombo();
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357 combo.setLayoutData(new GridData(SWT.FILL, SWT.CENTER, true, false));
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358 }
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359
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360 private void bindUI() {
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361 ISetProperty treeChildrenProperty = new DelegatingSetProperty() {
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362 ISetProperty modelGroups = BeanProperties.set(
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363 ApplicationModel.class, "groups");
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364 ISetProperty groupContacts = BeanProperties.set(ContactGroup.class,
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365 "contacts");
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366
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367 protected ISetProperty doGetDelegate(Object source) {
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368 if (source instanceof ApplicationModel)
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369 return modelGroups;
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370 if (source instanceof ContactGroup)
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371 return groupContacts;
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372 return null;
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373 }
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374 };
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375
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376 ViewerSupport.bind(contactViewer, model, treeChildrenProperty,
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377 BeanProperties.values(new String[] { "name", "status" }));
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378
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379 contactViewer.expandAll();
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380
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381 final IObservableValue selection = ViewerProperties.singleSelection()
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382 .observe(contactViewer);
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383
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384 DataBindingContext dbc = new DataBindingContext();
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385
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386 dbc.bindValue(WidgetProperties.text(SWT.Modify).observe(nameText),
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387 BeanProperties.value("name").observeDetail(selection));
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388
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389 statusViewer.setContentProvider(new ArrayContentProvider());
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390 statusViewer.setInput(statuses);
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391
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392 dbc.bindValue(ViewerProperties.singleSelection().observe(statusViewer),
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393 BeanProperties.value("status").observeDetail(selection));
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394
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395 dbc.bindValue(WidgetProperties.enabled().observe(
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396 statusViewer.getControl()), new ComputedValue() {
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397 protected Object calculate() {
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398 return bool.valueOf(selection.getValue() instanceof Contact);
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399 }
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400 });
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401 }
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402 }
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403 void main( String[] args ){
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404 Snippet026AnonymousBeanProperties.main(args);
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405 }