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annotate org.eclipse.jface.examples.databinding/src/org/eclipse/jface/examples/databinding/snippets/Snippet025TableViewerWithPropertyDerivedColumns.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
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children 5d5bd660917f
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90
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1 /*******************************************************************************
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2 * Copyright (c) 2006 The Pampered Chef, Inc. 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 * Coconut Palm Software, Inc. - Initial API and implementation
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10 * Matthew Hall - bug 195222, 261843, 260337
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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.BeanProperties;
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20 import org.eclipse.core.databinding.observable.Realm;
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21 import org.eclipse.core.databinding.observable.list.IObservableList;
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22 import org.eclipse.core.databinding.observable.list.WritableList;
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23 import org.eclipse.core.databinding.observable.value.IObservableValue;
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24 import org.eclipse.jface.databinding.swt.SWTObservables;
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25 import org.eclipse.jface.databinding.swt.WidgetProperties;
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26 import org.eclipse.jface.databinding.viewers.ViewerSupport;
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27 import org.eclipse.jface.databinding.viewers.ViewerProperties;
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28 import org.eclipse.jface.layout.GridDataFactory;
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29 import org.eclipse.jface.layout.GridLayoutFactory;
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30 import org.eclipse.jface.viewers.ComboViewer;
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31 import org.eclipse.jface.viewers.TableViewer;
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32 import org.eclipse.jface.viewers.Viewer;
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33 import org.eclipse.jface.viewers.ViewerFilter;
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34 import org.eclipse.swt.SWT;
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35 import org.eclipse.swt.widgets.Combo;
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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.Shell;
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39 import org.eclipse.swt.widgets.Table;
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40 import org.eclipse.swt.widgets.TableColumn;
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41 import org.eclipse.swt.widgets.Text;
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42
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43 /**
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44 * Demonstrates binding a TableViewer to a collection.
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45 */
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46 public class Snippet025TableViewerWithPropertyDerivedColumns {
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47 public static void main(String[] args) {
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48 final Display display = new Display();
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49
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50 // Set up data binding. In an RCP application, the threading Realm
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51 // will be set for you automatically by the Workbench. In an SWT
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52 // application, you can do this once, wrapping your binding
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53 // method call.
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54 Realm.runWithDefault(SWTObservables.getRealm(display), new Runnable() {
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55 public void run() {
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56 ViewModel viewModel = new ViewModel();
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57 Shell shell = new View(viewModel).createShell();
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58
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59 // The SWT event loop
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60 while (!shell.isDisposed()) {
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61 if (!display.readAndDispatch()) {
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62 display.sleep();
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63 }
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64 }
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65 }
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66 });
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67 }
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68
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69 // Minimal JavaBeans support
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70 public static abstract class AbstractModelObject {
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71 private PropertyChangeSupport propertyChangeSupport = new PropertyChangeSupport(
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72 this);
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73
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74 public void addPropertyChangeListener(PropertyChangeListener listener) {
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75 propertyChangeSupport.addPropertyChangeListener(listener);
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76 }
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77
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78 public void addPropertyChangeListener(String propertyName,
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79 PropertyChangeListener listener) {
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80 propertyChangeSupport.addPropertyChangeListener(propertyName,
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81 listener);
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82 }
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83
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84 public void removePropertyChangeListener(PropertyChangeListener listener) {
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85 propertyChangeSupport.removePropertyChangeListener(listener);
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86 }
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87
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88 public void removePropertyChangeListener(String propertyName,
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89 PropertyChangeListener listener) {
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90 propertyChangeSupport.removePropertyChangeListener(propertyName,
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91 listener);
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92 }
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93
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94 protected void firePropertyChange(String propertyName, Object oldValue,
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95 Object newValue) {
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96 propertyChangeSupport.firePropertyChange(propertyName, oldValue,
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97 newValue);
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98 }
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99 }
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100
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101 private static Person UNKNOWN = new Person("unknown", null, null);
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102
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103 // The data model class. This is normally a persistent class of some sort.
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104 static class Person extends AbstractModelObject {
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105 // A property...
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106 String name = "Donald Duck";
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107 Person mother;
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108 Person father;
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109
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110 public Person(String name, Person mother, Person father) {
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111 this.name = name;
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112 this.mother = mother;
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113 this.father = father;
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114 }
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115
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116 public String getName() {
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117 return name;
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118 }
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119
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120 public void setName(String name) {
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121 firePropertyChange("name", this.name, this.name = name);
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122 }
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123
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124 public Person getMother() {
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125 return mother;
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126 }
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127
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128 public void setMother(Person mother) {
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129 firePropertyChange("mother", this.mother, this.mother = mother);
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130 }
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131
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132 public Person getFather() {
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133 return father;
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134 }
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135
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136 public void setFather(Person father) {
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137 firePropertyChange("father", this.father, this.father = father);
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138 }
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139 }
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140
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141 // The View's model--the root of our Model graph for this particular GUI.
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142 //
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143 // Typically each View class has a corresponding ViewModel class.
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144 // The ViewModel is responsible for getting the objects to edit from the
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145 // data access tier. Since this snippet doesn't have any persistent objects
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146 // ro retrieve, this ViewModel just instantiates a model object to edit.
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147 static class ViewModel {
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148 // The model to bind
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149 private IObservableList people = new WritableList();
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150 {
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151 Person fergus = new Person("Fergus McDuck", UNKNOWN, UNKNOWN);
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152 Person downy = new Person("Downy O'Drake", UNKNOWN, UNKNOWN);
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153 Person scrooge = new Person("Scrooge McDuck", downy, fergus);
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154 Person hortense = new Person("Hortense McDuck", downy, fergus);
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155 Person quackmore = new Person("Quackmore Duck", UNKNOWN, UNKNOWN);
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156 Person della = new Person("Della Duck", hortense, quackmore);
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157 Person donald = new Person("Donald Duck", hortense, quackmore);
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158 people.add(UNKNOWN);
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159 people.add(downy);
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160 people.add(fergus);
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161 people.add(scrooge);
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162 people.add(quackmore);
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163 people.add(hortense);
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164 people.add(della);
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165 people.add(donald);
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166 }
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167
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168 public IObservableList getPeople() {
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169 return people;
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170 }
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171 }
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172
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173 // The GUI view
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174 static class View {
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175 private ViewModel viewModel;
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176 private Table duckFamily;
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177 private Text nameText;
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178 private Combo motherCombo;
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179 private Combo fatherCombo;
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180
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181 public View(ViewModel viewModel) {
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182 this.viewModel = viewModel;
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183 }
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184
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185 public Shell createShell() {
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186 // Build a UI
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187 Display display = Display.getDefault();
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188 Shell shell = new Shell(display);
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189 duckFamily = new Table(shell, SWT.BORDER | SWT.FULL_SELECTION);
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190 duckFamily.setHeaderVisible(true);
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191 GridDataFactory.defaultsFor(duckFamily).span(2, 1).applyTo(
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192 duckFamily);
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193 createColumn("Name");
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194 createColumn("Mother");
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195 createColumn("Father");
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196 createColumn("Maternal Grandmother");
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197 createColumn("Maternal Grandfather");
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198 createColumn("Paternal Grandmother");
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199 createColumn("Paternal Grandfather");
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200
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201 duckFamily.setLinesVisible(true);
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202
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203 new Label(shell, SWT.NONE).setText("Name:");
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204 nameText = new Text(shell, SWT.BORDER);
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205 GridDataFactory.defaultsFor(nameText).grab(true, false).applyTo(
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206 nameText);
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207
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208 new Label(shell, SWT.NONE).setText("Mother:");
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209 motherCombo = new Combo(shell, SWT.READ_ONLY);
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210
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211 new Label(shell, SWT.NONE).setText("Father:");
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212 fatherCombo = new Combo(shell, SWT.READ_ONLY);
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213
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214 DataBindingContext bindingContext = new DataBindingContext();
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215 bindGUI(bindingContext);
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216
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217 GridLayoutFactory.swtDefaults().numColumns(2).applyTo(shell);
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218 // Open and return the Shell
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219 shell.setSize(800, 300);
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220 shell.open();
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221 return shell;
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222 }
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223
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224 private void createColumn(String string) {
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225 final TableColumn column = new TableColumn(duckFamily, SWT.NONE);
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226 column.setText(string);
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227 column.pack();
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228 if (column.getWidth() < 100)
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229 column.setWidth(100);
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230 }
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231
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232 protected void bindGUI(DataBindingContext dbc) {
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233 // Since we're using a JFace Viewer, we do first wrap our Table...
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234 TableViewer peopleViewer = new TableViewer(duckFamily);
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235 peopleViewer.addFilter(new ViewerFilter() {
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236 public boolean select(Viewer viewer, Object parentElement,
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237 Object element) {
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238 return element != UNKNOWN;
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239 }
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240 });
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241
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242 ViewerSupport.bind(peopleViewer, viewModel.getPeople(),
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243 BeanProperties.values(Person.class, new String[] { "name",
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244 "mother.name", "father.name", "mother.mother.name",
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245 "mother.father.name", "father.mother.name",
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246 "father.father.name" }));
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247
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248 IObservableValue masterSelection = ViewerProperties
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249 .singleSelection().observe(peopleViewer);
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250
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251 dbc.bindValue(WidgetProperties.text(SWT.Modify).observe(nameText),
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252 BeanProperties.value(Person.class, "name").observeDetail(
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253 masterSelection));
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254
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255 ComboViewer mothercomboViewer = new ComboViewer(motherCombo);
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256 ViewerSupport.bind(mothercomboViewer, viewModel.getPeople(),
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257 BeanProperties.value(Person.class, "name"));
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258
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259 dbc.bindValue(ViewerProperties.singleSelection().observe(
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260 mothercomboViewer), BeanProperties.value(Person.class,
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261 "mother").observeDetail(masterSelection));
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262
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263 ComboViewer fatherComboViewer = new ComboViewer(fatherCombo);
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264 ViewerSupport.bind(fatherComboViewer, viewModel.getPeople(),
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265 BeanProperties.value(Person.class, "name"));
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266
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267 dbc.bindValue(ViewerProperties.singleSelection().observe(
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268 fatherComboViewer), BeanProperties.value(Person.class,
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269 "father").observeDetail(masterSelection));
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270 }
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271 }
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272 }