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annotate org.eclipse.jface.examples.databinding/src/org/eclipse/jface/examples/databinding/snippets/Snippet027ExternalValidator.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, 2009 Code 9 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 * Chris Aniszczyk <zx@code9.com> - initial API and implementation
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10 * Boris Bokowski, IBM - minor changes
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11 ******************************************************************************/
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12
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13 module org.eclipse.jface.examples.databinding.snippets.Snippet027ExternalValidator;
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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.PropertyChangeListener;
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18 import java.beans.PropertyChangeSupport;
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19
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20 import org.eclipse.core.databinding.DataBindingContext;
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21 import org.eclipse.core.databinding.beans.BeansObservables;
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22 import org.eclipse.core.databinding.observable.Realm;
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23 import org.eclipse.core.databinding.observable.value.IObservableValue;
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24 import org.eclipse.core.databinding.validation.MultiValidator;
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25 import org.eclipse.core.databinding.validation.ValidationStatus;
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26 import org.eclipse.core.runtime.IStatus;
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27 import org.eclipse.core.runtime.Status;
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28 import org.eclipse.jface.databinding.swt.SWTObservables;
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29 import org.eclipse.jface.databinding.wizard.WizardPageSupport;
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30 import org.eclipse.jface.wizard.IWizard;
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31 import org.eclipse.jface.wizard.Wizard;
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32 import org.eclipse.jface.wizard.WizardDialog;
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33 import org.eclipse.jface.wizard.WizardPage;
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34 import org.eclipse.swt.SWT;
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35 import org.eclipse.swt.layout.GridData;
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36 import org.eclipse.swt.layout.GridLayout;
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37 import org.eclipse.swt.widgets.Composite;
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38 import org.eclipse.swt.widgets.Display;
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39 import org.eclipse.swt.widgets.Label;
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40 import org.eclipse.swt.widgets.Text;
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41
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42 /**
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43 * This snippet demonstrates how to integrate an external validator
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44 *
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45 * @since 3.5
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46 */
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47 public class Snippet027ExternalValidator extends WizardPage {
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48
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49 private Text nameValue;
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50 private Text emailValue;
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51 private Text phoneNumberValue;
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52
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53 private Contact contact;
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54
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55 // Minimal JavaBeans support
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56 public static abstract class AbstractModelObject {
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57 private PropertyChangeSupport propertyChangeSupport = new PropertyChangeSupport(
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58 this);
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59
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60 public void addPropertyChangeListener(PropertyChangeListener listener) {
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61 propertyChangeSupport.addPropertyChangeListener(listener);
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62 }
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64 public void addPropertyChangeListener(String propertyName,
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65 PropertyChangeListener listener) {
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66 propertyChangeSupport.addPropertyChangeListener(propertyName,
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67 listener);
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68 }
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70 public void removePropertyChangeListener(PropertyChangeListener listener) {
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71 propertyChangeSupport.removePropertyChangeListener(listener);
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72 }
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74 public void removePropertyChangeListener(String propertyName,
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75 PropertyChangeListener listener) {
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76 propertyChangeSupport.removePropertyChangeListener(propertyName,
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77 listener);
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78 }
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80 protected void firePropertyChange(String propertyName, Object oldValue,
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81 Object newValue) {
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82 propertyChangeSupport.firePropertyChange(propertyName, oldValue,
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83 newValue);
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84 }
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85 }
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87 static class Contact extends AbstractModelObject {
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88 String name;
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89 String email;
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90 String phoneNumber;
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91
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92 public Contact(String name, String email, String number) {
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93 this.name = name;
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94 this.email = email;
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95 this.phoneNumber = number;
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96 }
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98 public String getName() {
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99 return name;
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100 }
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102 public void setName(String name) {
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103 String oldValue = this.name;
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104 this.name = name;
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105 firePropertyChange("name", oldValue, name);
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106 }
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108 public String getEmail() {
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109 return email;
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110 }
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112 public void setEmail(String email) {
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113 String oldValue = this.email;
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114 this.email = email;
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115 firePropertyChange("email", oldValue, email);
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116 }
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118 public String getPhoneNumber() {
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119 return phoneNumber;
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120 }
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122 public void setPhoneNumber(String number) {
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123 String oldValue = this.phoneNumber;
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124 this.phoneNumber = number;
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125 firePropertyChange("phoneNumber", oldValue, number);
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126 }
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128 public IStatus validate() {
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129 if (name.indexOf(' ') == -1) {
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130 return ValidationStatus
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131 .error("Please enter both first and last name separated by a space.");
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132 }
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133 if (email.indexOf('@') == -1) {
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134 return ValidationStatus
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135 .error("Please enter a valid email address containing '@'.");
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136 }
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137 if (!phoneNumber.startsWith("+")) {
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138 return ValidationStatus
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139 .error("Please enter the phone number in international format starting with '+'.");
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140 }
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141 return Status.OK_STATUS;
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142 }
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144 }
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146 /**
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147 * Create the wizard
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148 */
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149 public Snippet027ExternalValidator() {
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150 super("snippet024");
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151 setTitle("Snippet 024 - External Validation");
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152 setDescription("Please enter contact details.");
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153 }
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155 /**
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156 * Create contents of the wizard
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157 *
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158 * @param parent
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159 */
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160 public void createControl(Composite parent) {
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161 Composite container = new Composite(parent, SWT.NULL);
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162 final GridLayout gridLayout = new GridLayout();
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163 gridLayout.numColumns = 2;
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164 container.setLayout(gridLayout);
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165 setControl(container);
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166
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167 final Label nameLabel = new Label(container, SWT.NONE);
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168 nameLabel.setText("Name");
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169
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170 nameValue = new Text(container, SWT.BORDER);
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171 final GridData gd = new GridData(SWT.FILL, SWT.CENTER, true, false);
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172 nameValue.setLayoutData(gd);
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173
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174 final Label emailLabel = new Label(container, SWT.NONE);
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175 emailLabel.setText("Email");
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176
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177 emailValue = new Text(container, SWT.BORDER);
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178 emailValue.setLayoutData(gd);
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179
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180 final Label phoneLabel = new Label(container, SWT.NONE);
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181 phoneLabel.setText("Phone");
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182
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183 phoneNumberValue = new Text(container, SWT.BORDER);
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184 phoneNumberValue.setLayoutData(gd);
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185
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186 contact = new Contact("BorisBokowski", "boris.at.somecompany.com",
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187 "1-123-456-7890");
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188
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189 bindUI();
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190 }
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191
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192 private void bindUI() {
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193 DataBindingContext dbc = new DataBindingContext();
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194
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195 final IObservableValue name = BeansObservables.observeValue(contact,
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196 "name");
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197 dbc.bindValue(SWTObservables.observeText(nameValue, SWT.Modify), name,
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198 null, null);
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199
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200 final IObservableValue email = BeansObservables.observeValue(contact,
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201 "email");
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202 dbc.bindValue(SWTObservables.observeText(emailValue, SWT.Modify),
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203 email, null, null);
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204
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205 final IObservableValue phone = BeansObservables.observeValue(contact,
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206 "phoneNumber");
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207 dbc.bindValue(SWTObservables.observeText(phoneNumberValue, SWT.Modify),
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208 phone, null, null);
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209
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210 MultiValidator validator = new MultiValidator() {
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211 protected IStatus validate() {
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212
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213 // Everything accessed here will trigger re-validation.
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214 name.getValue();
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215 email.getValue();
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216 phone.getValue();
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217
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218 System.out.println("Validating...");
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219
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220 return contact.validate();
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221 }
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222 };
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223 dbc.addValidationStatusProvider(validator);
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224
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225 WizardPageSupport.create(this, dbc);
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226 }
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227
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228 static class ExternalValidationWizard extends Wizard {
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229 public void addPages() {
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230 addPage(new Snippet027ExternalValidator());
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231 }
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232
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233 public String getWindowTitle() {
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234 return "Snippet 024 - External Validation";
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235 }
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236
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237 public bool performFinish() {
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238 return true;
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239 }
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240 }
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241
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242 public static void main(String[] args) {
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243 Display display = new Display();
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244
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245 Realm.runWithDefault(SWTObservables.getRealm(display), new Runnable() {
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246 public void run() {
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247 IWizard wizard = new ExternalValidationWizard();
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248 WizardDialog dialog = new WizardDialog(null, wizard);
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249 dialog.open();
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250
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251 // The SWT event loop
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252 Display display = Display.getCurrent();
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253 while (dialog.getShell() != null
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254 && !dialog.getShell().isDisposed()) {
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255 if (!display.readAndDispatch()) {
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256 display.sleep();
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257 }
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258 }
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259 }
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260 });
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261
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262 display.dispose();
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263 }
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264 }
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265 void main( String[] args ){
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266 Snippet027ExternalValidator.main(args);
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267 }