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/internal/databinding/provisional/observable/AbstractObservableTest.java
public Object getValueType() {
			return null;
		}
		
		protected void fireStale() {
			super.fireStale();
		}
		protected void fireChange() {
			super.fireChange();
		}
		
		public boolean isStale() {
			return false;
		}
		
		protected boolean hasListeners() {
			return super.hasListeners();
		}
		
		protected void firstListenerAdded() {
			firstListenerAdded = true;
		}
		
		protected void lastListenerRemoved() {
			lastListenerRemoved = true;
		}
	}
}