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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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89:0ca1aee7decf 90:6086085e153d
1 /*******************************************************************************
2 * Copyright (c) 2008, 2009 Code 9 Corporation and others.
3 * All rights reserved. This program and the accompanying materials
4 * are made available under the terms of the Eclipse Public License v1.0
5 * which accompanies this distribution, and is available at
6 * http://www.eclipse.org/legal/epl-v10.html
7 *
8 * Contributors:
9 * Chris Aniszczyk <zx@code9.com> - initial API and implementation
10 * Boris Bokowski, IBM - minor changes
11 ******************************************************************************/
12
13 package org.eclipse.jface.examples.databinding.snippets;
14
15 import java.beans.PropertyChangeListener;
16 import java.beans.PropertyChangeSupport;
17
18 import org.eclipse.core.databinding.DataBindingContext;
19 import org.eclipse.core.databinding.beans.BeansObservables;
20 import org.eclipse.core.databinding.observable.Realm;
21 import org.eclipse.core.databinding.observable.value.IObservableValue;
22 import org.eclipse.core.databinding.validation.MultiValidator;
23 import org.eclipse.core.databinding.validation.ValidationStatus;
24 import org.eclipse.core.runtime.IStatus;
25 import org.eclipse.core.runtime.Status;
26 import org.eclipse.jface.databinding.swt.SWTObservables;
27 import org.eclipse.jface.databinding.wizard.WizardPageSupport;
28 import org.eclipse.jface.wizard.IWizard;
29 import org.eclipse.jface.wizard.Wizard;
30 import org.eclipse.jface.wizard.WizardDialog;
31 import org.eclipse.jface.wizard.WizardPage;
32 import org.eclipse.swt.SWT;
33 import org.eclipse.swt.layout.GridData;
34 import org.eclipse.swt.layout.GridLayout;
35 import org.eclipse.swt.widgets.Composite;
36 import org.eclipse.swt.widgets.Display;
37 import org.eclipse.swt.widgets.Label;
38 import org.eclipse.swt.widgets.Text;
39
40 /**
41 * This snippet demonstrates how to integrate an external validator
42 *
43 * @since 3.5
44 */
45 public class Snippet027ExternalValidator extends WizardPage {
46
47 private Text nameValue;
48 private Text emailValue;
49 private Text phoneNumberValue;
50
51 private Contact contact;
52
53 // Minimal JavaBeans support
54 public static abstract class AbstractModelObject {
55 private PropertyChangeSupport propertyChangeSupport = new PropertyChangeSupport(
56 this);
57
58 public void addPropertyChangeListener(PropertyChangeListener listener) {
59 propertyChangeSupport.addPropertyChangeListener(listener);
60 }
61
62 public void addPropertyChangeListener(String propertyName,
63 PropertyChangeListener listener) {
64 propertyChangeSupport.addPropertyChangeListener(propertyName,
65 listener);
66 }
67
68 public void removePropertyChangeListener(PropertyChangeListener listener) {
69 propertyChangeSupport.removePropertyChangeListener(listener);
70 }
71
72 public void removePropertyChangeListener(String propertyName,
73 PropertyChangeListener listener) {
74 propertyChangeSupport.removePropertyChangeListener(propertyName,
75 listener);
76 }
77
78 protected void firePropertyChange(String propertyName, Object oldValue,
79 Object newValue) {
80 propertyChangeSupport.firePropertyChange(propertyName, oldValue,
81 newValue);
82 }
83 }
84
85 static class Contact extends AbstractModelObject {
86 String name;
87 String email;
88 String phoneNumber;
89
90 public Contact(String name, String email, String number) {
91 this.name = name;
92 this.email = email;
93 this.phoneNumber = number;
94 }
95
96 public String getName() {
97 return name;
98 }
99
100 public void setName(String name) {
101 String oldValue = this.name;
102 this.name = name;
103 firePropertyChange("name", oldValue, name);
104 }
105
106 public String getEmail() {
107 return email;
108 }
109
110 public void setEmail(String email) {
111 String oldValue = this.email;
112 this.email = email;
113 firePropertyChange("email", oldValue, email);
114 }
115
116 public String getPhoneNumber() {
117 return phoneNumber;
118 }
119
120 public void setPhoneNumber(String number) {
121 String oldValue = this.phoneNumber;
122 this.phoneNumber = number;
123 firePropertyChange("phoneNumber", oldValue, number);
124 }
125
126 public IStatus validate() {
127 if (name.indexOf(' ') == -1) {
128 return ValidationStatus
129 .error("Please enter both first and last name separated by a space.");
130 }
131 if (email.indexOf('@') == -1) {
132 return ValidationStatus
133 .error("Please enter a valid email address containing '@'.");
134 }
135 if (!phoneNumber.startsWith("+")) {
136 return ValidationStatus
137 .error("Please enter the phone number in international format starting with '+'.");
138 }
139 return Status.OK_STATUS;
140 }
141
142 }
143
144 /**
145 * Create the wizard
146 */
147 public Snippet027ExternalValidator() {
148 super("snippet024");
149 setTitle("Snippet 024 - External Validation");
150 setDescription("Please enter contact details.");
151 }
152
153 /**
154 * Create contents of the wizard
155 *
156 * @param parent
157 */
158 public void createControl(Composite parent) {
159 Composite container = new Composite(parent, SWT.NULL);
160 final GridLayout gridLayout = new GridLayout();
161 gridLayout.numColumns = 2;
162 container.setLayout(gridLayout);
163 setControl(container);
164
165 final Label nameLabel = new Label(container, SWT.NONE);
166 nameLabel.setText("Name");
167
168 nameValue = new Text(container, SWT.BORDER);
169 final GridData gd = new GridData(SWT.FILL, SWT.CENTER, true, false);
170 nameValue.setLayoutData(gd);
171
172 final Label emailLabel = new Label(container, SWT.NONE);
173 emailLabel.setText("Email");
174
175 emailValue = new Text(container, SWT.BORDER);
176 emailValue.setLayoutData(gd);
177
178 final Label phoneLabel = new Label(container, SWT.NONE);
179 phoneLabel.setText("Phone");
180
181 phoneNumberValue = new Text(container, SWT.BORDER);
182 phoneNumberValue.setLayoutData(gd);
183
184 contact = new Contact("BorisBokowski", "boris.at.somecompany.com",
185 "1-123-456-7890");
186
187 bindUI();
188 }
189
190 private void bindUI() {
191 DataBindingContext dbc = new DataBindingContext();
192
193 final IObservableValue name = BeansObservables.observeValue(contact,
194 "name");
195 dbc.bindValue(SWTObservables.observeText(nameValue, SWT.Modify), name,
196 null, null);
197
198 final IObservableValue email = BeansObservables.observeValue(contact,
199 "email");
200 dbc.bindValue(SWTObservables.observeText(emailValue, SWT.Modify),
201 email, null, null);
202
203 final IObservableValue phone = BeansObservables.observeValue(contact,
204 "phoneNumber");
205 dbc.bindValue(SWTObservables.observeText(phoneNumberValue, SWT.Modify),
206 phone, null, null);
207
208 MultiValidator validator = new MultiValidator() {
209 protected IStatus validate() {
210
211 // Everything accessed here will trigger re-validation.
212 name.getValue();
213 email.getValue();
214 phone.getValue();
215
216 System.out.println("Validating...");
217
218 return contact.validate();
219 }
220 };
221 dbc.addValidationStatusProvider(validator);
222
223 WizardPageSupport.create(this, dbc);
224 }
225
226 static class ExternalValidationWizard extends Wizard {
227 public void addPages() {
228 addPage(new Snippet027ExternalValidator());
229 }
230
231 public String getWindowTitle() {
232 return "Snippet 024 - External Validation";
233 }
234
235 public boolean performFinish() {
236 return true;
237 }
238 }
239
240 public static void main(String[] args) {
241 Display display = new Display();
242
243 Realm.runWithDefault(SWTObservables.getRealm(display), new Runnable() {
244 public void run() {
245 IWizard wizard = new ExternalValidationWizard();
246 WizardDialog dialog = new WizardDialog(null, wizard);
247 dialog.open();
248
249 // The SWT event loop
250 Display display = Display.getCurrent();
251 while (dialog.getShell() != null
252 && !dialog.getShell().isDisposed()) {
253 if (!display.readAndDispatch()) {
254 display.sleep();
255 }
256 }
257 }
258 });
259
260 display.dispose();
261 }
262 }