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annotate org.eclipse.jface.examples.databinding/src/org/eclipse/jface/examples/databinding/snippets/Snippet007ColorLabelProvider.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 Brad Reynolds 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 * Brad Reynolds - initial API and implementation
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10 * IBM Corporation - see bug 137934
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11 ******************************************************************************/
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12
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13 module org.eclipse.jface.examples.databinding.snippets.Snippet007ColorLabelProvider;
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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 import java.util.ArrayList;
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20 import java.util.List;
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21
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22 import org.eclipse.core.databinding.beans.BeansObservables;
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23 import org.eclipse.core.databinding.observable.Observables;
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24 import org.eclipse.core.databinding.observable.Realm;
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25 import org.eclipse.core.databinding.observable.list.IObservableList;
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26 import org.eclipse.core.databinding.observable.map.IObservableMap;
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27 import org.eclipse.jface.databinding.swt.SWTObservables;
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28 import org.eclipse.jface.databinding.viewers.ObservableListContentProvider;
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29 import org.eclipse.jface.databinding.viewers.ObservableMapLabelProvider;
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30 import org.eclipse.jface.viewers.ILabelProvider;
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31 import org.eclipse.jface.viewers.ITableColorProvider;
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32 import org.eclipse.jface.viewers.StructuredSelection;
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33 import org.eclipse.jface.viewers.TableViewer;
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34 import org.eclipse.swt.SWT;
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35 import org.eclipse.swt.events.SelectionAdapter;
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36 import org.eclipse.swt.events.SelectionEvent;
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37 import org.eclipse.swt.graphics.Color;
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38 import org.eclipse.swt.layout.GridData;
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39 import org.eclipse.swt.layout.GridLayout;
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40 import org.eclipse.swt.widgets.Button;
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41 import org.eclipse.swt.widgets.Display;
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42 import org.eclipse.swt.widgets.Shell;
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43 import org.eclipse.swt.widgets.Table;
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44 import org.eclipse.swt.widgets.TableColumn;
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45
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46 /**
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47 * An example showing how to create a {@link ILabelProvider label provider} that
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48 * to provide colors.
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49 *
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50 * @since 3.2
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51 */
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52 public class Snippet007ColorLabelProvider {
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53 /**
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54 * @param args
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55 */
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56 public static void main(String[] args) {
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57 final List persons = new ArrayList();
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58 persons.add(new Person("Fiona Apple", Person.FEMALE));
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59 persons.add(new Person("Elliot Smith", Person.MALE));
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60 persons.add(new Person("Diana Krall", Person.FEMALE));
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61 persons.add(new Person("David Gilmour", Person.MALE));
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62
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63 final Display display = new Display();
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64 Realm.runWithDefault(SWTObservables.getRealm(display), new Runnable() {
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65 public void run() {
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66 Shell shell = new Shell(display);
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67 shell.setText("Gender Bender");
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68 shell.setLayout(new GridLayout());
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70 Table table = new Table(shell, SWT.SINGLE | SWT.H_SCROLL
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71 | SWT.V_SCROLL | SWT.BORDER);
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72 GridData gridData = new GridData(SWT.FILL, SWT.FILL, true, true);
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73 table.setLayoutData(gridData);
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74 table.setHeaderVisible(true);
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75 table.setLinesVisible(true);
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76 TableColumn column = new TableColumn(table, SWT.NONE);
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77 column.setText("No");
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78 column.setWidth(20);
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79 column = new TableColumn(table, SWT.NONE);
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80 column.setText("Name");
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81 column.setWidth(100);
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82 final TableViewer viewer = new TableViewer(table);
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83
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84 IObservableList observableList = Observables
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85 .staticObservableList(persons);
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86 ObservableListContentProvider contentProvider = new ObservableListContentProvider();
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87
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88 viewer.setContentProvider(contentProvider);
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90 // this does not have to correspond to the columns in the table,
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91 // we just list all attributes that affect the table content.
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92 IObservableMap[] attributes = BeansObservables.observeMaps(
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93 contentProvider.getKnownElements(), Person.class,
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94 new String[] { "name", "gender" });
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95
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96 class ColorLabelProvider extends ObservableMapLabelProvider
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97 implements ITableColorProvider {
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98 Color male = display.getSystemColor(SWT.COLOR_BLUE);
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99
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100 Color female = new Color(display, 255, 192, 203);
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102 ColorLabelProvider(IObservableMap[] attributes) {
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103 super(attributes);
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104 }
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106 // to drive home the point that attributes does not have to
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107 // match
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108 // the columns
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109 // in the table, we change the column text as follows:
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110 public String getColumnText(Object element, int index) {
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111 if (index == 0) {
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112 return Integer
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113 .toString(persons.indexOf(element) + 1);
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114 }
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115 return ((Person) element).getName();
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116 }
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117
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118 public Color getBackground(Object element, int index) {
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119 return null;
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120 }
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122 public Color getForeground(Object element, int index) {
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123 if (index == 0)
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124 return null;
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125 Person person = (Person) element;
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126 return (person.getGender() == Person.MALE) ? male
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127 : female;
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128 }
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130 public void dispose() {
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131 super.dispose();
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132 female.dispose();
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133 }
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134 }
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135 viewer.setLabelProvider(new ColorLabelProvider(attributes));
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136
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137 viewer.setInput(observableList);
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139 table.getColumn(0).pack();
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141 Button button = new Button(shell, SWT.PUSH);
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142 button.setText("Toggle Gender");
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143 button.addSelectionListener(new SelectionAdapter() {
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144 public void widgetSelected(SelectionEvent arg0) {
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145 StructuredSelection selection = (StructuredSelection) viewer
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146 .getSelection();
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147 if (selection != null && !selection.isEmpty()) {
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148 Person person = (Person) selection
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149 .getFirstElement();
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150 person
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151 .setGender((person.getGender() == Person.MALE) ? Person.FEMALE
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152 : Person.MALE);
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153 }
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154 }
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155 });
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156
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157 shell.setSize(300, 400);
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158 shell.open();
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159
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160 while (!shell.isDisposed()) {
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161 if (!display.readAndDispatch())
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162 display.sleep();
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163 }
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164 }
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165 });
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166 display.dispose();
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167 }
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168
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169 static class Person {
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170 static final int MALE = 0;
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171
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172 static final int FEMALE = 1;
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173
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174 private String name;
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175
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176 private int gender;
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177
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178 private PropertyChangeSupport changeSupport = new PropertyChangeSupport(
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179 this);
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180
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181 Person(String name, int gender) {
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182 this.name = name;
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183 this.gender = gender;
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184 }
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185
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186 /**
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187 * Returns the name. Method declared public to satisfy Java bean
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188 * conventions
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189 *
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190 * @return the name
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191 */
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192 public String getName() {
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193 return name;
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194 }
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195
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196 /**
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197 * @param listener
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198 */
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199 public void addPropertyChangeListener(PropertyChangeListener listener) {
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200 changeSupport.addPropertyChangeListener(listener);
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201 }
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202
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203 public void removePropertyChangeListener(PropertyChangeListener listener) {
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204 changeSupport.removePropertyChangeListener(listener);
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205 }
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206
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207 /**
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208 * Returns the gender. Method declared public to satisfy Java bean
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209 * conventions
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210 *
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211 * @return the gender
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212 */
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213 public int getGender() {
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214 return gender;
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215 }
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216
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217 void setGender(int gender) {
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218 changeSupport.firePropertyChange("gender", this.gender,
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219 this.gender = gender);
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220 }
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221 }
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222 }
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223
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224 void main( String[] args ){
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225 Snippet007ColorLabelProvider.main(args);
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226 }