Bug 153993 [Viewers] Common Baseclass for Tree/TableEditorImpl
bundles/org.eclipse.jface/src/org/eclipse/jface/viewers/TableViewer.java
/*
				 * (non-Javadoc)
				 * 
				 * @see org.eclipse.swt.widgets.Listener#handleEvent(org.eclipse.swt.widgets.Event)
				 */
				public void handleEvent(Event event) {
					TableItem item = (TableItem) event.item;
					final int index = table.indexOf(item);
					Object element = resolveElement(index);
					if (element == null) {
						
						
						IContentProvider contentProvider = getContentProvider();
						
						if (contentProvider instanceof ILazyContentProvider) {
							((ILazyContentProvider) contentProvider)
									.updateElement(index);
							return;
						}
					}
					associate(element, item);
					updateItem(item, element);
				}
			});
		}
		/**
		 * Get the element at index.Resolve it lazily if this is available.
		 * 
		 * @param index
		 * @return Object or <code>null</code> if it could not be found