java - JTree : Check the level of selection

Question

我正在使用 MouseAdapter 检查 JTree 节点上的双击。我想根据所选节点的级别执行一些不同的操作。如何检查节点的级别？这是监听器的代码:

private MouseAdapter getMouseAdapter(JTree jtree) {
        final JTree tree = jtree;
        return new MouseAdapter() {

            @Override
            public void mousePressed(MouseEvent e) {
                TreePath selPath = tree.getPathForLocation(e.getX(), e.getY());
                if (selPath != null) {
                    if (e.getClickCount() == 2) {
                        String selectedNode = selPath.getLastPathComponent().toString();

              // >>>>>  check on which level of the tree this node is        
                    }
                }
            }};
    }

Answer 1

您可以通过首先调用 getPath() 检查从 selPath 到树根的路径长度selPath 的方法并计算其长度。

Object[] array = selPath.getPath();
int depth = array.length;