tests/org.eclipse.jface.tests.databinding/src/org/eclipse/jface/tests/databinding/scenarios/NPETestScenario.java

/*******************************************************************************
 * Copyright (c) 2006, 2007 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
 *     Brad Reynolds - bug 116920
 *******************************************************************************/

package org.eclipse.jface.tests.databinding.scenarios;

import org.eclipse.core.databinding.beans.BeansObservables;
import org.eclipse.jface.databinding.swt.SWTObservables;
import org.eclipse.swt.SWT;
import org.eclipse.swt.widgets.Text;

/**
 * @since 3.2
 * 
 */
public class NPETestScenario extends ScenariosTestCase {
    private Text text;

    Person person;

    protected void setUp() throws Exception {
        super.setUp();
        person = new Person();
        text = new Text(getComposite(), SWT.BORDER);
    }

    /**
     * Asserts the ability to have an initial value of <code>null</code> on
     * the model and to update the value by changing the value of the view.
     */
    public void test_InitialNullValue() {
        Person person = new Person();
        assertNull(person.getName());

        System.out.println("Expecting message about not being able to attach a listener");
        getDbc().bindValue(SWTObservables.observeText(text, SWT.Modify),
                BeansObservables.observeValue(person, "name"),
                null, null);

        text.setText("Brad");
        text.notifyListeners(SWT.FocusOut, null);
        assertEquals("Brad", person.getName());
    }

    private static class Person {
        private String name;

        /**
         * @return Returns the name.
         */
        public String getName() {
            return name;
        }

        /**
         * @param name
         *            The name to set.
         */
        public void setName(String name) {
            this.name = name;
        }
    }
}