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
bundles/org.eclipse.core.databinding/src/org/eclipse/core/databinding/observable/value/ComputedValue.java
IStaleListener {
		public void run() {
			cachedValue = calculate();
		}
		public void handleStale(IObservable source) {
			if (!dirty && !stale) {
				stale = true;
				fireStale();
			}
		}
		public void handleChange(IObservable source) {
			makeDirty();
		}
	}
	private PrivateInterface privateInterface = new PrivateInterface();
	private Object valueType;
	protected final Object doGetValue() {
		if (dirty) {
			
			
			
			
			IObservable[] newDependencies = ObservableTracker.runAndMonitor(
					privateInterface, privateInterface, null);
			stale = false;
			for (int i = 0; i < newDependencies.length; i++) {
				IObservable observable = newDependencies[i];
				
				if (observable.isStale()) {
					stale = true;