// Public Methods
public void appendNextTreeGeneration(Vector generation) {
DefaultMutableTreeNode nextGeneration = generationNodeBuilder(generation);
generations.add(nextGeneration);
// If Generations contains leaf nodes (generated objects)
// Enabled Save All Menu Item
if (generations.getLeafCount() > 0) miSaveAll.setEnabled(true);
else miSaveAll.setEnabled(false);
// Update JTree View
// affected nodes needing updating
int[] nodeRangeToUpdate = {generations.getIndex(nextGeneration)};
((DefaultTreeModel) tree.getModel()).nodesWereInserted(generations, nodeRangeToUpdate);
// Expand Parent after first child node is displayed
if (generationNumber == 1) tree.expandRow(0);
++generationNumber;
}
