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annotate org.eclipse.jface.examples.databinding/src/org/eclipse/jface/examples/databinding/snippets/Snippet027ExternalValidator.d @ 90:6086085e153d

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Added databinding snippets. unmodified java sources.
author Frank Benoit <benoit@tionex.de>
date Sun, 19 Apr 2009 11:33:55 +0200
parents
children 5d5bd660917f
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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 package org.eclipse.jface.examples.databinding.snippets;
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14
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15 import java.beans.PropertyChangeListener;
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16 import java.beans.PropertyChangeSupport;
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17
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18 import org.eclipse.core.databinding.DataBindingContext;
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19 import org.eclipse.core.databinding.beans.BeansObservables;
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20 import org.eclipse.core.databinding.observable.Realm;
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21 import org.eclipse.core.databinding.observable.value.IObservableValue;
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22 import org.eclipse.core.databinding.validation.MultiValidator;
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23 import org.eclipse.core.databinding.validation.ValidationStatus;
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24 import org.eclipse.core.runtime.IStatus;
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25 import org.eclipse.core.runtime.Status;
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26 import org.eclipse.jface.databinding.swt.SWTObservables;
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27 import org.eclipse.jface.databinding.wizard.WizardPageSupport;
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28 import org.eclipse.jface.wizard.IWizard;
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29 import org.eclipse.jface.wizard.Wizard;
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30 import org.eclipse.jface.wizard.WizardDialog;
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31 import org.eclipse.jface.wizard.WizardPage;
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32 import org.eclipse.swt.SWT;
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33 import org.eclipse.swt.layout.GridData;
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34 import org.eclipse.swt.layout.GridLayout;
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35 import org.eclipse.swt.widgets.Composite;
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36 import org.eclipse.swt.widgets.Display;
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37 import org.eclipse.swt.widgets.Label;
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38 import org.eclipse.swt.widgets.Text;
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39
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40 /**
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41 * This snippet demonstrates how to integrate an external validator
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42 *
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43 * @since 3.5
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44 */
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45 public class Snippet027ExternalValidator extends WizardPage {
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46
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47 private Text nameValue;
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48 private Text emailValue;
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49 private Text phoneNumberValue;
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50
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51 private Contact contact;
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52
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53 // Minimal JavaBeans support
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54 public static abstract class AbstractModelObject {
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55 private PropertyChangeSupport propertyChangeSupport = new PropertyChangeSupport(
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56 this);
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57
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58 public void addPropertyChangeListener(PropertyChangeListener listener) {
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59 propertyChangeSupport.addPropertyChangeListener(listener);
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60 }
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61
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62 public void addPropertyChangeListener(String propertyName,
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63 PropertyChangeListener listener) {
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64 propertyChangeSupport.addPropertyChangeListener(propertyName,
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65 listener);
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66 }
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67
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68 public void removePropertyChangeListener(PropertyChangeListener listener) {
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69 propertyChangeSupport.removePropertyChangeListener(listener);
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70 }
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71
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72 public void removePropertyChangeListener(String propertyName,
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73 PropertyChangeListener listener) {
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74 propertyChangeSupport.removePropertyChangeListener(propertyName,
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75 listener);
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76 }
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77
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78 protected void firePropertyChange(String propertyName, Object oldValue,
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79 Object newValue) {
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80 propertyChangeSupport.firePropertyChange(propertyName, oldValue,
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81 newValue);
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82 }
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83 }
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84
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85 static class Contact extends AbstractModelObject {
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86 String name;
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87 String email;
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88 String phoneNumber;
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89
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90 public Contact(String name, String email, String number) {
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91 this.name = name;
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92 this.email = email;
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93 this.phoneNumber = number;
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94 }
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95
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96 public String getName() {
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97 return name;
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98 }
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99
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100 public void setName(String name) {
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101 String oldValue = this.name;
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102 this.name = name;
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103 firePropertyChange("name", oldValue, name);
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104 }
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105
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106 public String getEmail() {
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107 return email;
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108 }
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109
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110 public void setEmail(String email) {
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111 String oldValue = this.email;
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112 this.email = email;
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113 firePropertyChange("email", oldValue, email);
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114 }
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115
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116 public String getPhoneNumber() {
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117 return phoneNumber;
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118 }
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119
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120 public void setPhoneNumber(String number) {
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121 String oldValue = this.phoneNumber;
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122 this.phoneNumber = number;
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123 firePropertyChange("phoneNumber", oldValue, number);
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124 }
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125
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126 public IStatus validate() {
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127 if (name.indexOf(' ') == -1) {
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128 return ValidationStatus
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129 .error("Please enter both first and last name separated by a space.");
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130 }
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131 if (email.indexOf('@') == -1) {
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132 return ValidationStatus
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133 .error("Please enter a valid email address containing '@'.");
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134 }
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135 if (!phoneNumber.startsWith("+")) {
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136 return ValidationStatus
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137 .error("Please enter the phone number in international format starting with '+'.");
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138 }
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139 return Status.OK_STATUS;
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140 }
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141
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142 }
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143
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144 /**
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145 * Create the wizard
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146 */
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147 public Snippet027ExternalValidator() {
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148 super("snippet024");
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149 setTitle("Snippet 024 - External Validation");
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150 setDescription("Please enter contact details.");
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151 }
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152
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153 /**
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154 * Create contents of the wizard
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155 *
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156 * @param parent
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157 */
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158 public void createControl(Composite parent) {
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159 Composite container = new Composite(parent, SWT.NULL);
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160 final GridLayout gridLayout = new GridLayout();
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161 gridLayout.numColumns = 2;
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162 container.setLayout(gridLayout);
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163 setControl(container);
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164
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165 final Label nameLabel = new Label(container, SWT.NONE);
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166 nameLabel.setText("Name");
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167
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168 nameValue = new Text(container, SWT.BORDER);
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169 final GridData gd = new GridData(SWT.FILL, SWT.CENTER, true, false);
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170 nameValue.setLayoutData(gd);
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171
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172 final Label emailLabel = new Label(container, SWT.NONE);
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173 emailLabel.setText("Email");
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174
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175 emailValue = new Text(container, SWT.BORDER);
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176 emailValue.setLayoutData(gd);
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177
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178 final Label phoneLabel = new Label(container, SWT.NONE);
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179 phoneLabel.setText("Phone");
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180
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181 phoneNumberValue = new Text(container, SWT.BORDER);
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182 phoneNumberValue.setLayoutData(gd);
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183
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184 contact = new Contact("BorisBokowski", "boris.at.somecompany.com",
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185 "1-123-456-7890");
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186
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187 bindUI();
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188 }
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189
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190 private void bindUI() {
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191 DataBindingContext dbc = new DataBindingContext();
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192
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193 final IObservableValue name = BeansObservables.observeValue(contact,
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194 "name");
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195 dbc.bindValue(SWTObservables.observeText(nameValue, SWT.Modify), name,
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196 null, null);
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197
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198 final IObservableValue email = BeansObservables.observeValue(contact,
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199 "email");
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200 dbc.bindValue(SWTObservables.observeText(emailValue, SWT.Modify),
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201 email, null, null);
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202
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203 final IObservableValue phone = BeansObservables.observeValue(contact,
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204 "phoneNumber");
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205 dbc.bindValue(SWTObservables.observeText(phoneNumberValue, SWT.Modify),
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206 phone, null, null);
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207
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208 MultiValidator validator = new MultiValidator() {
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209 protected IStatus validate() {
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210
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211 // Everything accessed here will trigger re-validation.
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212 name.getValue();
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213 email.getValue();
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214 phone.getValue();
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215
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216 System.out.println("Validating...");
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217
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218 return contact.validate();
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219 }
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220 };
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221 dbc.addValidationStatusProvider(validator);
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222
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223 WizardPageSupport.create(this, dbc);
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224 }
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225
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226 static class ExternalValidationWizard extends Wizard {
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227 public void addPages() {
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228 addPage(new Snippet027ExternalValidator());
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229 }
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230
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231 public String getWindowTitle() {
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232 return "Snippet 024 - External Validation";
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233 }
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234
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235 public boolean performFinish() {
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236 return true;
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237 }
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238 }
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239
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240 public static void main(String[] args) {
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241 Display display = new Display();
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242
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243 Realm.runWithDefault(SWTObservables.getRealm(display), new Runnable() {
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244 public void run() {
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245 IWizard wizard = new ExternalValidationWizard();
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246 WizardDialog dialog = new WizardDialog(null, wizard);
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247 dialog.open();
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248
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249 // The SWT event loop
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250 Display display = Display.getCurrent();
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251 while (dialog.getShell() != null
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252 && !dialog.getShell().isDisposed()) {
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253 if (!display.readAndDispatch()) {
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254 display.sleep();
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255 }
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256 }
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257 }
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258 });
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259
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260 display.dispose();
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261 }
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262 }