public static ActionCallback selectFirstNode(final JTree tree) {
final TreeModel model = tree.getModel();
final Object root = model.getRoot();
TreePath selectionPath = new TreePath(root);
if (!tree.isRootVisible() && model.getChildCount(root) > 0)
selectionPath = selectionPath.pathByAddingChild(model.getChild(root, 0));
return selectPath(tree, selectionPath);
}
public static int getDepthOffset(JTree aTree) {
if (aTree.isRootVisible()) {
if (aTree.getShowsRootHandles()) {
return 1;
} else {
return 0;
}
} else if (!aTree.getShowsRootHandles()) {
return -1;
} else {
return 0;
}
}