Right-click context menu for Java JTree?

Question

I\'m trying to implement pop-up menus in Java JTree. I\'ve sub-classed DefaultTreeCellRenderer (to change node appearance) and DefaultTreeCellEditor (to create Components to

Answer 1

Call addRightClickListener() to add the right-click context menu listener to your JTree. Both overrides are for proper cross-platform functionality (Windows and Linux differ here).

private void addRightClickListener()
{
    MouseListener mouseListener = new MouseAdapter()
    {
        @Override
        public void mousePressed(MouseEvent mouseEvent)
        {
            handleContextMenu(mouseEvent);
        }

        @Override
        public void mouseReleased(MouseEvent mouseEvent)
        {
            handleContextMenu(mouseEvent);
        }
    };

    tree.addMouseListener(mouseListener);
}

private void handleContextMenu(MouseEvent mouseEvent)
{
    if (mouseEvent.isPopupTrigger())
    {
        MyContextMenu contextMenu = new MyContextMenu();

        contextMenu.show(mouseEvent.getComponent(),
                mouseEvent.getX(),
                mouseEvent.getY());
    }
}