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/OrderedTreeNode.java
private HashSet parents = null;
	
	
	Object parent;
	/**
	 * List of child elements.
	 */
	private IObservableList children;
	private boolean hasPendingNode = false;
	private boolean isStale;
	private boolean listeningToChildren = false;
	private boolean prefetchEnqueued = false;
	/**
	 * @param treePath
	 * @param cp
	 */
	public OrderedTreeNode(TreePath treePath, OrderedTreeContentProvider cp) {
		this.element = treePath;
		this.contentProvider = cp;
		children = contentProvider.createChildList(treePath);
		if (children == null) {
			children = Observables.emptyObservableList(contentProvider.getKnownElements().getRealm());
			listeningToChildren = true;
		}
		hasPendingNode = children.isStale();
	}
	/**
	 * @param parent
	 */