--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/org.eclipse.jface.examples.databinding/src/org/eclipse/jface/examples/databinding/snippets/Snippet031JFaceObservable.d	Sun Apr 19 11:33:55 2009 +0200
@@ -0,0 +1,142 @@
+/*******************************************************************************
+ * Copyright (c) 2008 IBM Corporation and others.
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v1.0
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/epl-v10.html
+ *
+ * Contributors:
+ *     IBM Corporation - initial API and implementation
+ ******************************************************************************/
+
+package org.eclipse.jface.examples.databinding.snippets;
+
+import org.eclipse.core.commands.common.EventManager;
+import org.eclipse.core.databinding.DataBindingContext;
+import org.eclipse.core.databinding.observable.Realm;
+import org.eclipse.core.databinding.property.value.IValueProperty;
+import org.eclipse.jface.databinding.swt.SWTObservables;
+import org.eclipse.jface.databinding.util.JFaceProperties;
+import org.eclipse.jface.util.IPropertyChangeListener;
+import org.eclipse.jface.util.PropertyChangeEvent;
+import org.eclipse.swt.SWT;
+import org.eclipse.swt.layout.RowLayout;
+import org.eclipse.swt.widgets.Display;
+import org.eclipse.swt.widgets.Label;
+import org.eclipse.swt.widgets.Shell;
+import org.eclipse.swt.widgets.Text;
+
+public class Snippet031JFaceObservable {
+
+	public static final String NAME_PROPERTY = "name_property";
+
+	public static void main(String[] args) {
+		Display display = new Display();
+		final ViewModel viewModel = new ViewModel();
+
+		Realm.runWithDefault(SWTObservables.getRealm(display), new Runnable() {
+			public void run() {
+				final Shell shell = new View(viewModel).createShell();
+				// The SWT event loop
+				Display display = Display.getCurrent();
+				while (!shell.isDisposed()) {
+					if (!display.readAndDispatch()) {
+						display.sleep();
+					}
+				}
+			}
+		});
+		// Print the results
+		System.out.println("person.getName() = "
+				+ viewModel.getPerson().getName());
+	}
+
+	// The data model class. This is normally a persistent class of some sort.
+	// 
+	// In this example, we extend the EventManager class
+	// to manage our listeners and we fire a property change
+	// event when the object state changes.
+	public static class Person extends EventManager {
+		// A property...
+		String name = "HelloWorld";
+
+		public String getName() {
+			return name;
+		}
+
+		public void setName(String name) {
+			fireChange(new PropertyChangeEvent(this, NAME_PROPERTY, this.name,
+					this.name = name));
+		}
+
+		public void addPropertyChangeListener(IPropertyChangeListener listener) {
+			addListenerObject(listener);
+		}
+
+		public void removePropertyChangeListener(
+				IPropertyChangeListener listener) {
+			removeListenerObject(listener);
+		}
+
+		private void fireChange(PropertyChangeEvent event) {
+			final Object[] list = getListeners();
+			for (int i = 0; i < list.length; ++i) {
+				((IPropertyChangeListener) list[i]).propertyChange(event);
+			}
+		}
+
+	}
+
+	// The View's model--the root of our Model graph for this particular GUI.
+	//
+	// Typically each View class has a corresponding ViewModel class.
+	// The ViewModel is responsible for getting the objects to edit from the
+	// DAO. Since this snippet doesn't have any persistent objects to
+	// retrieve, this ViewModel just instantiates a model object to edit.
+	static class ViewModel {
+		// The model to bind
+		private Person person = new Person();
+
+		public Person getPerson() {
+			return person;
+		}
+	}
+
+	// The GUI view
+	static class View {
+		private ViewModel viewModel;
+		private Text name;
+
+		public View(ViewModel viewModel) {
+			this.viewModel = viewModel;
+		}
+
+		public Shell createShell() {
+			// Build a UI
+			Display display = Display.getDefault();
+			Shell shell = new Shell(display);
+			shell.setLayout(new RowLayout(SWT.VERTICAL));
+			name = new Text(shell, SWT.BORDER);
+
+			// Bind it
+			DataBindingContext bindingContext = new DataBindingContext();
+			Person person = viewModel.getPerson();
+
+			IValueProperty nameProperty = JFaceProperties.value(Person.class,
+					"name", NAME_PROPERTY);
+
+			bindingContext.bindValue(SWTObservables.observeText(name,
+					SWT.Modify), nameProperty.observe(person), null, null);
+
+			Label label = new Label(shell, SWT.NONE);
+			bindingContext.bindValue(SWTObservables.observeText(label),
+					nameProperty.observe(person), null, null);
+
+			// Open and return the Shell
+			shell.pack();
+			shell.open();
+			return shell;
+		}
+	}
+
+}