JTree Menu

Good day, Could anyone please assist me here? I have dynamically built a JTree from the database. My default view has a SplitPane with the JTree on the left. My CRUD pages are all Widgets (DefaultDataEditorWidget).

I’m struggling with adding commands to the JTree nodes that would enable the necessary Widgets to be displayed to the right component of the SplitPane whenever a JTree node is clicked. It would be nice to have the JTree Menu also dynamically added to the menuBar. I have spent a couple of days already trying to get this working. Your help will be highly appreciated. Thanks.