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/AbstractObservableSet.java
public boolean isStale() {
		return stale;
	}
	/**
	 * @param stale
	 *            The stale state to set. This will fire a stale event if the
	 *            given boolean is true and this observable set was not already
	 *            stale.
	 */
	public void setStale(boolean stale) {
		boolean wasStale = this.stale;
		this.stale = stale;
		if (!wasStale && stale) {
			fireStale();
		}
	}
	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();
	}
	
}