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annotate org.eclipse.jface.examples.databinding/src/org/eclipse/jface/examples/databinding/snippets/Snippet017TableViewerWithDerivedColumns.d @ 125:c43718956f21 default tip
Updated the snippets status.
author | Jacob Carlborg <doob@me.com> |
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date | Thu, 11 Aug 2011 19:55:14 +0200 |
parents | 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 - bugs 260329, 260337 |
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11 ******************************************************************************/ |
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12 |
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13 module org.eclipse.jface.examples.databinding.snippets.Snippet017TableViewerWithDerivedColumns; |
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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.beans.BeansObservables; |
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23 import org.eclipse.core.databinding.observable.Realm; |
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24 import org.eclipse.core.databinding.observable.list.IObservableList; |
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25 import org.eclipse.core.databinding.observable.list.WritableList; |
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26 import org.eclipse.core.databinding.observable.value.IObservableValue; |
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27 import org.eclipse.jface.databinding.swt.SWTObservables; |
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28 import org.eclipse.jface.databinding.viewers.ViewerSupport; |
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29 import org.eclipse.jface.databinding.viewers.ViewersObservables; |
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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 Snippet017TableViewerWithDerivedColumns { |
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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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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 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. |
100 | 106 static class Person : 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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117 |
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118 public String getName() { |
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119 return name; |
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120 } |
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121 |
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122 public void setName(String name) { |
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123 String oldValue = this.name; |
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124 this.name = name; |
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125 firePropertyChange("name", oldValue, name); |
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126 } |
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127 |
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128 public Person getMother() { |
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129 return mother; |
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130 } |
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131 |
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132 public void setMother(Person mother) { |
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133 firePropertyChange("mother", this.mother, this.mother = mother); |
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134 } |
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135 |
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136 public Person getFather() { |
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137 return father; |
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138 } |
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139 |
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140 public void setFather(Person father) { |
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141 firePropertyChange("father", this.father, this.father = father); |
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142 } |
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143 |
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144 public String toString() { |
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145 return name; |
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146 } |
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147 } |
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148 |
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149 // The View's model--the root of our Model graph for this particular GUI. |
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150 // |
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151 // Typically each View class has a corresponding ViewModel class. |
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152 // The ViewModel is responsible for getting the objects to edit from the |
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153 // data access tier. Since this snippet doesn't have any persistent objects |
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154 // ro retrieve, this ViewModel just instantiates a model object to edit. |
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155 static class ViewModel { |
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156 // The model to bind |
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157 private IObservableList people = new WritableList(); |
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158 { |
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159 Person fergus = new Person("Fergus McDuck", UNKNOWN, UNKNOWN); |
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160 Person downy = new Person("Downy O'Drake", UNKNOWN, UNKNOWN); |
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161 Person scrooge = new Person("Scrooge McDuck", downy, fergus); |
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162 Person hortense = new Person("Hortense McDuck", downy, fergus); |
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163 Person quackmore = new Person("Quackmore Duck", UNKNOWN, UNKNOWN); |
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164 Person della = new Person("Della Duck", hortense, quackmore); |
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165 Person donald = new Person("Donald Duck", hortense, quackmore); |
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166 donald.setFather(quackmore); |
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167 donald.setMother(hortense); |
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168 della.setFather(quackmore); |
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169 della.setMother(hortense); |
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170 hortense.setMother(downy); |
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171 hortense.setFather(fergus); |
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172 scrooge.setMother(downy); |
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173 scrooge.setFather(fergus); |
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174 people.add(UNKNOWN); |
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175 people.add(downy); |
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176 people.add(fergus); |
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177 people.add(scrooge); |
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178 people.add(quackmore); |
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179 people.add(hortense); |
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180 people.add(della); |
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181 people.add(donald); |
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182 } |
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183 |
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184 public IObservableList getPeople() { |
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185 return people; |
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186 } |
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187 } |
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188 |
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189 // The GUI view |
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190 static class View { |
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191 private ViewModel viewModel; |
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192 private Table duckFamily; |
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193 private Text nameText; |
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194 private Combo motherCombo; |
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195 private Combo fatherCombo; |
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196 |
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197 public View(ViewModel viewModel) { |
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198 this.viewModel = viewModel; |
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199 } |
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200 |
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201 public Shell createShell() { |
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202 // Build a UI |
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203 Display display = Display.getDefault(); |
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204 Shell shell = new Shell(display); |
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205 duckFamily = new Table(shell, SWT.BORDER | SWT.FULL_SELECTION); |
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206 duckFamily.setHeaderVisible(true); |
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207 GridDataFactory.defaultsFor(duckFamily).span(2, 1).applyTo( |
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208 duckFamily); |
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209 createColumn("Name"); |
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210 createColumn("Mother"); |
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211 createColumn("Father"); |
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212 createColumn("Grandmother"); |
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213 duckFamily.setLinesVisible(true); |
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214 |
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215 new Label(shell, SWT.NONE).setText("Name:"); |
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216 nameText = new Text(shell, SWT.BORDER); |
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217 GridDataFactory.defaultsFor(nameText).grab(true, false).applyTo( |
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218 nameText); |
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219 |
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220 new Label(shell, SWT.NONE).setText("Mother:"); |
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221 motherCombo = new Combo(shell, SWT.READ_ONLY); |
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222 |
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223 new Label(shell, SWT.NONE).setText("Father:"); |
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224 fatherCombo = new Combo(shell, SWT.READ_ONLY); |
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225 |
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226 DataBindingContext bindingContext = new DataBindingContext(); |
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227 bindGUI(bindingContext); |
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228 |
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229 GridLayoutFactory.swtDefaults().numColumns(2).applyTo(shell); |
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230 // Open and return the Shell |
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231 shell.setSize(500, 300); |
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232 shell.open(); |
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233 return shell; |
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234 } |
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235 |
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236 private void createColumn(String string) { |
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237 final TableColumn column = new TableColumn(duckFamily, SWT.NONE); |
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238 column.setWidth(100); |
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239 column.setText(string); |
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240 } |
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241 |
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242 protected void bindGUI(DataBindingContext bindingContext) { |
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243 // Since we're using a JFace Viewer, we do first wrap our Table... |
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244 TableViewer peopleViewer = new TableViewer(duckFamily); |
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245 peopleViewer.addFilter(new ViewerFilter() { |
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246 public bool select(Viewer viewer, Object parentElement, |
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247 Object element) { |
100 | 248 return element !is UNKNOWN; |
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249 } |
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250 }); |
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251 |
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252 // Bind viewers to model |
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253 ViewerSupport.bind(peopleViewer, viewModel.getPeople(), |
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254 BeanProperties.values(new String[] { "name", "mother.name", |
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255 "father.name", "mother.mother.name" })); |
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256 |
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257 // Bind viewer selection to detail fields |
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258 IObservableValue selection = ViewersObservables |
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259 .observeSingleSelection(peopleViewer); |
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260 bindingContext.bindValue(SWTObservables.observeText(nameText, |
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261 SWT.Modify), BeansObservables.observeDetailValue(selection, |
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262 "name", String.class)); |
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263 |
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264 ComboViewer mothercomboViewer = new ComboViewer(motherCombo); |
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265 ViewerSupport.bind(mothercomboViewer, viewModel.getPeople(), |
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266 BeanProperties.value("name")); |
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267 bindingContext.bindValue(ViewersObservables |
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268 .observeSingleSelection(mothercomboViewer), |
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269 BeansObservables.observeDetailValue(selection, "mother", |
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270 Person.class)); |
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271 |
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272 ComboViewer fatherComboViewer = new ComboViewer(fatherCombo); |
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273 ViewerSupport.bind(fatherComboViewer, viewModel.getPeople(), |
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274 BeanProperties.value("name")); |
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275 bindingContext.bindValue(ViewersObservables |
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276 .observeSingleSelection(fatherComboViewer), |
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277 BeansObservables.observeDetailValue(selection, "father", |
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278 Person.class)); |
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279 } |
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280 } |
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281 |
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282 } |
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283 void main( String[] args ){ |
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284 Snippet017TableViewerWithDerivedColumns.main(args); |
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285 } |