Bug 147530 [DataBinding] Provide event objects for change listeners
Before data binding goes 1.0 it would be wise to provide EventObjects for the following listeners to ensure that the API doesn't preclude future expansion of the values supplied to listeners. Interfaces that would be affected: * IValueChangeListener * IValueChangingListener * IListChangeListener * ISetChangeListener * IMappingChangeListener
tests/org.eclipse.jface.tests.databinding/src/org/eclipse/jface/tests/databinding/ObservableTest.java
private static class MyObservable extends WritableValue {
		/**
		 * @param initialValue
		 */
		public MyObservable(Object initialValue) {
			super(initialValue);
		}
		public void fireChange(Object oldValue, Object newValue) {
			fireValueChange(Diffs.createValueDiff(oldValue, newValue));
		}
	}
	private MyObservable observable;
	protected void setUp() throws Exception {
		super.setUp();
        
        Realm.setDefault(SWTObservables.getRealm(Display.getDefault()));
		observable = new MyObservable(null);
	}
	protected void tearDown() throws Exception {
		if (observable != null) {
			try {
				observable.dispose();
			} catch (Exception ex) {
				
			}
		}
		observable = null;
		super.tearDown();
	}
    private static class ChangeListener implements IChangeListener {