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.observable/src/org/eclipse/core/databinding/observable/set/ObservableSet.java
public void setStale(boolean stale) {
		boolean wasStale = this.stale;
		this.stale = stale;
		if (!wasStale && stale) {
			fireStale();
		}
	}
	/**
	 * @param wrappedSet The wrappedSet to set.
	 */
	protected void setWrappedSet(Set wrappedSet) {
		this.wrappedSet = wrappedSet;
	}
	protected void fireChange() {
		throw new RuntimeException("fireChange should not be called, use fireSetChange() instead"); 
	}
	
	/* (non-Javadoc)
	 * @see org.eclipse.jface.provisional.databinding.observable.AbstractObservable#dispose()
	 */
	public void dispose() {
		setChangeListeners = null;
		super.dispose();
	}
	
	public Object getElementType() {
		return elementType;
	}
}