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annotate org.eclipse.jface.examples.databinding/src/org/eclipse/jface/examples/databinding/snippets/Snippet032TableViewerColumnEditing.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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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 * The Pampered Chef, Inc. - initial API and implementation
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10 * Tom Schindl - cell editing
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11 * Matthew Hall - bugs 260329, 260337
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12 * Heiko Ahlig - bug 267712
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13 *******************************************************************************/
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14
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15 package org.eclipse.jface.examples.databinding.snippets;
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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 import java.util.LinkedList;
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20 import java.util.List;
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21
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22 import org.eclipse.core.databinding.DataBindingContext;
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23 import org.eclipse.core.databinding.beans.BeanProperties;
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24 import org.eclipse.core.databinding.beans.BeansObservables;
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25 import org.eclipse.core.databinding.beans.IBeanValueProperty;
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26 import org.eclipse.core.databinding.observable.Realm;
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27 import org.eclipse.core.databinding.observable.list.WritableList;
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28 import org.eclipse.core.databinding.observable.map.IObservableMap;
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29 import org.eclipse.core.databinding.observable.value.IObservableValue;
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30 import org.eclipse.core.databinding.property.Properties;
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31 import org.eclipse.core.databinding.property.value.IValueProperty;
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32 import org.eclipse.jface.databinding.swt.SWTObservables;
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33 import org.eclipse.jface.databinding.swt.WidgetProperties;
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34 import org.eclipse.jface.databinding.viewers.CellEditorProperties;
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35 import org.eclipse.jface.databinding.viewers.ObservableListContentProvider;
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36 import org.eclipse.jface.databinding.viewers.ObservableMapCellLabelProvider;
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37 import org.eclipse.jface.databinding.viewers.ObservableValueEditingSupport;
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38 import org.eclipse.jface.databinding.viewers.ViewersObservables;
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39 import org.eclipse.jface.viewers.TableViewer;
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40 import org.eclipse.jface.viewers.TableViewerColumn;
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41 import org.eclipse.jface.viewers.TextCellEditor;
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42 import org.eclipse.swt.SWT;
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43 import org.eclipse.swt.layout.GridData;
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44 import org.eclipse.swt.layout.GridLayout;
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45 import org.eclipse.swt.widgets.Display;
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46 import org.eclipse.swt.widgets.Label;
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47 import org.eclipse.swt.widgets.Shell;
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48 import org.eclipse.swt.widgets.Table;
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49
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50 /**
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51 * Demonstrates binding a TableViewer with multiple columns to a collection.
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52 */
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53 public class Snippet032TableViewerColumnEditing {
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54 public static void main(String[] args) {
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55 final Display display = new Display();
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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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60
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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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70
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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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75
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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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79
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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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85
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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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89
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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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95
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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 // 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;
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107 String firstName;
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108
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109 public Person(String firstName, String name) {
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110 this.name = name;
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111 this.firstName = firstName;
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112 }
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113
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114 public String getName() {
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115 return name;
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116 }
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117
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118 public void setName(String name) {
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119 firePropertyChange("name", this.name, this.name = name);
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120 }
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121
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122 public String getFirstName() {
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123 return firstName;
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124 }
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125
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126 public void setFirstName(String firstName) {
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127 firePropertyChange("firstName", this.firstName,
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128 this.firstName = firstName);
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129 }
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130 }
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131
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132 // The View's model--the root of our Model graph for this particular GUI.
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133 //
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134 // Typically each View class has a corresponding ViewModel class.
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135 // The ViewModel is responsible for getting the objects to edit from the
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136 // data access tier. Since this snippet doesn't have any persistent objects
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137 // ro retrieve, this ViewModel just instantiates a model object to edit.
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138 static class ViewModel {
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139 // The model to bind
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140 private List people = new LinkedList();
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141 {
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142 people.add(new Person("Dave", "Orme"));
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143 people.add(new Person("Gili", "Mendel"));
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144 people.add(new Person("Joe", "Winchester"));
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145 people.add(new Person("Boris", "Bokowski"));
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146 people.add(new Person("Brad", "Reynolds"));
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147 people.add(new Person("Matthew", "Hall"));
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148 }
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149
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150 public List getPeople() {
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151 return people;
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152 }
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153 }
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154
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155 // The GUI view
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156 static class View {
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157 private ViewModel viewModel;
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158 private Table committers;
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159 private Label selectedCommitterName;
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160 private Label selectedCommitterFirstName;
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161
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162 public View(ViewModel viewModel) {
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163 this.viewModel = viewModel;
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164 }
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165
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166 public Shell createShell() {
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167 // Build a UI
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168 Display display = Display.getDefault();
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169 Shell shell = new Shell(display);
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170 shell.setLayout(new GridLayout(2, true));
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171 committers = new Table(shell, SWT.BORDER | SWT.FULL_SELECTION);
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172 committers.setLinesVisible(true);
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173 committers.setHeaderVisible(true);
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174 GridData layoutData = new GridData(SWT.FILL, SWT.FILL, true, true);
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175 layoutData.horizontalSpan = 2;
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176 committers.setLayoutData(layoutData);
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177
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178 GridData fieldLayoutData = new GridData(SWT.FILL, SWT.BEGINNING,
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179 true, false);
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180 selectedCommitterName = new Label(shell, SWT.NONE);
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181 selectedCommitterName.setLayoutData(fieldLayoutData);
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182
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183 selectedCommitterFirstName = new Label(shell, SWT.NONE);
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184 selectedCommitterFirstName.setLayoutData(fieldLayoutData);
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185
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186 DataBindingContext bindingContext = new DataBindingContext();
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187 bindGUI(bindingContext);
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188
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189 // Open and return the Shell
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190 shell.setSize(250, 300);
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191 shell.open();
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192 return shell;
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193 }
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194
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195 protected void bindGUI(DataBindingContext bindingContext) {
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196 // Since we're using a JFace Viewer, we do first wrap our Table...
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197 TableViewer peopleViewer = new TableViewer(committers);
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198
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199 TableViewerColumn columnName = new TableViewerColumn(peopleViewer,
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200 SWT.NONE);
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201 columnName.getColumn().setText("Name");
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202 columnName.getColumn().setWidth(100);
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203
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204 TableViewerColumn columnFirstName = new TableViewerColumn(
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205 peopleViewer, SWT.NONE);
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206 columnFirstName.getColumn().setText("FirstName");
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207 columnFirstName.getColumn().setWidth(100);
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208
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209 // Bind viewer to model
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210 IBeanValueProperty propName = BeanProperties.value(Person.class,
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211 "name");
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212 IBeanValueProperty propFirstname = BeanProperties.value(
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213 Person.class, "firstName");
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214
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215 IValueProperty cellEditorControlText = CellEditorProperties
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216 .control().value(WidgetProperties.text());
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217
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218 columnName.setEditingSupport(ObservableValueEditingSupport.create(
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219 peopleViewer, bindingContext,
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220 new TextCellEditor(committers), cellEditorControlText,
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221 propName));
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222 columnFirstName.setEditingSupport(ObservableValueEditingSupport
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223 .create(peopleViewer, bindingContext, new TextCellEditor(
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224 committers), cellEditorControlText, propFirstname));
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225
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226 ObservableListContentProvider contentProvider = new ObservableListContentProvider();
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227 peopleViewer.setContentProvider(contentProvider);
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228
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229 // Bind the LabelProviders to the model and columns
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230 IObservableMap[] result = Properties.observeEach(contentProvider
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231 .getKnownElements(), new IBeanValueProperty[] { propName,
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232 propFirstname });
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233
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234 columnName.setLabelProvider(new ObservableMapCellLabelProvider(
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235 result[0]));
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236 columnFirstName
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237 .setLabelProvider(new ObservableMapCellLabelProvider(
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238 result[1]));
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239
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240 peopleViewer.setInput(new WritableList(viewModel.getPeople(),
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241 Person.class));
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242
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243 // bind selectedCommitter labels to the name and forname of the
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244 // current selection
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245 IObservableValue selection = ViewersObservables
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246 .observeSingleSelection(peopleViewer);
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247 bindingContext.bindValue(SWTObservables
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248 .observeText(selectedCommitterName), BeansObservables
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249 .observeDetailValue(selection, "name", String.class));
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250 bindingContext.bindValue(SWTObservables
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251 .observeText(selectedCommitterFirstName), BeansObservables
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252 .observeDetailValue(selection, "firstName", String.class));
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253 }
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254 }
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255 }