Bug 205248 [Databinding] Observables on Text with FOCUS_OUT event incorrectly notify with no change
If you get an observable on a Text for the FOCUS_OUT event, the model is updated every time, even if there is no change in the value. The observable should not trigger a model change if the Text value is the same as the model value.
tests/org.eclipse.jface.tests.databinding/src/org/eclipse/jface/tests/internal/databinding/internal/swt/TextObservableValueTest.java
private Text text;
	private ValueChangeEventTracker listener;
	protected void setUp() throws Exception {
		super.setUp();
		Shell shell = new Shell();
		text = new Text(shell, SWT.NONE);
		
		listener = new ValueChangeEventTracker();
	}
	/**
	 * Asserts that only valid SWT event types are accepted on construction of
	 * TextObservableValue.
	 */
	public void testConstructorUpdateEventTypes() {
		try {
			new TextObservableValue(text, SWT.NONE);
			new TextObservableValue(text, SWT.FocusOut);
			new TextObservableValue(text, SWT.Modify);
			assertTrue(true);
		} catch (IllegalArgumentException e) {