Right now, there is no way (that I can find) to figure out which Window or Scene a MenuItem belongs to, starting from the MenuItem. For example, with any Node, I can use node.getScene().getWindow() -- but the MenuItem implementation for this does not completely exist (though it is close).

If my MenuItem exists in a popup menu outside a MenuBar, I can use getParentMenu() and getParentPopup() to eventually obtain a ContextMenu object, from which I can use the ownerWindow or ownerNode properties to continue up the hierarchy.

But MenuItem.getParentPopup() doesn't work if my MenuItem is contained in a MenuBar(), which leaves me effectively stranded if I want to work my way back from that MenuItem to the Scene or Window that it is part of.

There are a number of ways to fix this problem, basically by adding a readonlyproperty to Menu or MenuItem. One obvious possibility would be to add a MenuItem.getParentMenuBar() method that parallels the behaviour of getParentMenu() and getParentPopup().