positionPropertiesFactory.setCellPropertiesEditor(this);
// Set up all of the stuff we need to the tree to display Cells
treeRoot = new SortedTreeNode(BUNDLE.getString("World_Root"));
cellNodes = new HashMap();
DefaultTreeModel treeModel = new DefaultTreeModel(treeRoot);
cellHierarchyTree.setModel(treeModel);
cellHierarchyTree.setCellRenderer(new CellTreeRenderer());
// Create a listener that will listen to the status of Cells. This
// listener gets added when the dialog is made visible. We need to do