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annotate org.eclipse.jface.examples.databinding/src/org/eclipse/jface/examples/databinding/snippets/Snippet025TableViewerWithPropertyDerivedColumns.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) 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 module org.eclipse.jface.examples.databinding.snippets.Snippet025TableViewerWithPropertyDerivedColumns;
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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.BeanProperties;
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22 import org.eclipse.core.databinding.observable.Realm;
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23 import org.eclipse.core.databinding.observable.list.IObservableList;
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24 import org.eclipse.core.databinding.observable.list.WritableList;
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25 import org.eclipse.core.databinding.observable.value.IObservableValue;
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26 import org.eclipse.jface.databinding.swt.SWTObservables;
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27 import org.eclipse.jface.databinding.swt.WidgetProperties;
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28 import org.eclipse.jface.databinding.viewers.ViewerSupport;
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29 import org.eclipse.jface.databinding.viewers.ViewerProperties;
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30 import org.eclipse.jface.layout.GridDataFactory;
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31 import org.eclipse.jface.layout.GridLayoutFactory;
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32 import org.eclipse.jface.viewers.ComboViewer;
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33 import org.eclipse.jface.viewers.TableViewer;
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34 import org.eclipse.jface.viewers.Viewer;
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35 import org.eclipse.jface.viewers.ViewerFilter;
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36 import org.eclipse.swt.SWT;
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37 import org.eclipse.swt.widgets.Combo;
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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.Shell;
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41 import org.eclipse.swt.widgets.Table;
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42 import org.eclipse.swt.widgets.TableColumn;
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43 import org.eclipse.swt.widgets.Text;
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44
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45 /**
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46 * Demonstrates binding a TableViewer to a collection.
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47 */
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48 public class Snippet025TableViewerWithPropertyDerivedColumns {
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49 public static void main(String[] args) {
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50 final Display display = new Display();
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51
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52 // Set up data binding. In an RCP application, the threading Realm
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53 // will be set for you automatically by the Workbench. In an SWT
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54 // application, you can do this once, wrapping your binding
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55 // method call.
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56 Realm.runWithDefault(SWTObservables.getRealm(display), new Runnable() {
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57 public void run() {
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58 ViewModel viewModel = new ViewModel();
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59 Shell shell = new View(viewModel).createShell();
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61 // The SWT event loop
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62 while (!shell.isDisposed()) {
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63 if (!display.readAndDispatch()) {
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64 display.sleep();
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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 }
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71 // Minimal JavaBeans support
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72 public static abstract class AbstractModelObject {
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73 private PropertyChangeSupport propertyChangeSupport = new PropertyChangeSupport(
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74 this);
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76 public void addPropertyChangeListener(PropertyChangeListener listener) {
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77 propertyChangeSupport.addPropertyChangeListener(listener);
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78 }
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80 public void addPropertyChangeListener(String propertyName,
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81 PropertyChangeListener listener) {
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82 propertyChangeSupport.addPropertyChangeListener(propertyName,
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83 listener);
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84 }
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86 public void removePropertyChangeListener(PropertyChangeListener listener) {
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87 propertyChangeSupport.removePropertyChangeListener(listener);
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88 }
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90 public void removePropertyChangeListener(String propertyName,
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91 PropertyChangeListener listener) {
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92 propertyChangeSupport.removePropertyChangeListener(propertyName,
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93 listener);
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94 }
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96 protected void firePropertyChange(String propertyName, Object oldValue,
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97 Object newValue) {
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98 propertyChangeSupport.firePropertyChange(propertyName, oldValue,
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99 newValue);
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100 }
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101 }
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102
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103 private static Person UNKNOWN = new Person("unknown", null, null);
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104
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105 // The data model class. This is normally a persistent class of some sort.
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106 static class Person extends AbstractModelObject {
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107 // A property...
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108 String name = "Donald Duck";
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109 Person mother;
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110 Person father;
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111
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112 public Person(String name, Person mother, Person father) {
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113 this.name = name;
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114 this.mother = mother;
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115 this.father = father;
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116 }
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118 public String getName() {
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119 return name;
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120 }
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122 public void setName(String name) {
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123 firePropertyChange("name", this.name, this.name = name);
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124 }
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126 public Person getMother() {
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127 return mother;
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128 }
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130 public void setMother(Person mother) {
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131 firePropertyChange("mother", this.mother, this.mother = mother);
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132 }
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134 public Person getFather() {
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135 return father;
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136 }
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138 public void setFather(Person father) {
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139 firePropertyChange("father", this.father, this.father = father);
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140 }
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141 }
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143 // The View's model--the root of our Model graph for this particular GUI.
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144 //
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145 // Typically each View class has a corresponding ViewModel class.
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146 // The ViewModel is responsible for getting the objects to edit from the
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147 // data access tier. Since this snippet doesn't have any persistent objects
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148 // ro retrieve, this ViewModel just instantiates a model object to edit.
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149 static class ViewModel {
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150 // The model to bind
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151 private IObservableList people = new WritableList();
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152 {
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153 Person fergus = new Person("Fergus McDuck", UNKNOWN, UNKNOWN);
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154 Person downy = new Person("Downy O'Drake", UNKNOWN, UNKNOWN);
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155 Person scrooge = new Person("Scrooge McDuck", downy, fergus);
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156 Person hortense = new Person("Hortense McDuck", downy, fergus);
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157 Person quackmore = new Person("Quackmore Duck", UNKNOWN, UNKNOWN);
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158 Person della = new Person("Della Duck", hortense, quackmore);
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159 Person donald = new Person("Donald Duck", hortense, quackmore);
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160 people.add(UNKNOWN);
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161 people.add(downy);
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162 people.add(fergus);
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163 people.add(scrooge);
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164 people.add(quackmore);
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165 people.add(hortense);
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166 people.add(della);
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167 people.add(donald);
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168 }
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169
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170 public IObservableList getPeople() {
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171 return people;
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172 }
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173 }
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174
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175 // The GUI view
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176 static class View {
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177 private ViewModel viewModel;
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178 private Table duckFamily;
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179 private Text nameText;
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180 private Combo motherCombo;
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181 private Combo fatherCombo;
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182
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183 public View(ViewModel viewModel) {
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184 this.viewModel = viewModel;
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185 }
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186
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187 public Shell createShell() {
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188 // Build a UI
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189 Display display = Display.getDefault();
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190 Shell shell = new Shell(display);
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191 duckFamily = new Table(shell, SWT.BORDER | SWT.FULL_SELECTION);
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192 duckFamily.setHeaderVisible(true);
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193 GridDataFactory.defaultsFor(duckFamily).span(2, 1).applyTo(
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194 duckFamily);
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195 createColumn("Name");
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196 createColumn("Mother");
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197 createColumn("Father");
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198 createColumn("Maternal Grandmother");
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199 createColumn("Maternal Grandfather");
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200 createColumn("Paternal Grandmother");
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201 createColumn("Paternal Grandfather");
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202
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203 duckFamily.setLinesVisible(true);
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204
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205 new Label(shell, SWT.NONE).setText("Name:");
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206 nameText = new Text(shell, SWT.BORDER);
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207 GridDataFactory.defaultsFor(nameText).grab(true, false).applyTo(
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208 nameText);
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209
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210 new Label(shell, SWT.NONE).setText("Mother:");
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211 motherCombo = new Combo(shell, SWT.READ_ONLY);
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212
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213 new Label(shell, SWT.NONE).setText("Father:");
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214 fatherCombo = new Combo(shell, SWT.READ_ONLY);
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215
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216 DataBindingContext bindingContext = new DataBindingContext();
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217 bindGUI(bindingContext);
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218
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219 GridLayoutFactory.swtDefaults().numColumns(2).applyTo(shell);
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220 // Open and return the Shell
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221 shell.setSize(800, 300);
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222 shell.open();
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223 return shell;
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224 }
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225
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226 private void createColumn(String string) {
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227 final TableColumn column = new TableColumn(duckFamily, SWT.NONE);
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228 column.setText(string);
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229 column.pack();
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230 if (column.getWidth() < 100)
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231 column.setWidth(100);
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232 }
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233
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234 protected void bindGUI(DataBindingContext dbc) {
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235 // Since we're using a JFace Viewer, we do first wrap our Table...
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236 TableViewer peopleViewer = new TableViewer(duckFamily);
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237 peopleViewer.addFilter(new ViewerFilter() {
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238 public bool select(Viewer viewer, Object parentElement,
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239 Object element) {
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240 return element != UNKNOWN;
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241 }
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242 });
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243
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244 ViewerSupport.bind(peopleViewer, viewModel.getPeople(),
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245 BeanProperties.values(Person.class, new String[] { "name",
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246 "mother.name", "father.name", "mother.mother.name",
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247 "mother.father.name", "father.mother.name",
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248 "father.father.name" }));
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249
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250 IObservableValue masterSelection = ViewerProperties
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251 .singleSelection().observe(peopleViewer);
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252
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253 dbc.bindValue(WidgetProperties.text(SWT.Modify).observe(nameText),
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254 BeanProperties.value(Person.class, "name").observeDetail(
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255 masterSelection));
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256
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257 ComboViewer mothercomboViewer = new ComboViewer(motherCombo);
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258 ViewerSupport.bind(mothercomboViewer, viewModel.getPeople(),
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259 BeanProperties.value(Person.class, "name"));
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260
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261 dbc.bindValue(ViewerProperties.singleSelection().observe(
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262 mothercomboViewer), BeanProperties.value(Person.class,
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263 "mother").observeDetail(masterSelection));
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264
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265 ComboViewer fatherComboViewer = new ComboViewer(fatherCombo);
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266 ViewerSupport.bind(fatherComboViewer, viewModel.getPeople(),
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267 BeanProperties.value(Person.class, "name"));
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268
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269 dbc.bindValue(ViewerProperties.singleSelection().observe(
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270 fatherComboViewer), BeanProperties.value(Person.class,
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271 "father").observeDetail(masterSelection));
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272 }
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273 }
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274 }
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275 void main( String[] args ){
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276 Snippet025TableViewerWithPropertyDerivedColumns.main(args);
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277 }