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.jface.databinding/src/org/eclipse/jface/databinding/viewers/LeafNodesSet.java
private HashSet leafNodes = new HashSet();
	private HashMap mapElementsOntoNodeInfo = new HashMap();
	private IUnorderedTreeProvider tree;
	private Object input;
	private int staleCount = 0;
	private class NodeInfo implements IStaleListener, ISetChangeListener {
		
		private int count;
		
		private TreePath treePath;