Context menus

[1j01]

Expose an API for context menus, using the same menu code as menubar popups.

The function needs to take a menu definition, a position, and orientation (directions it should fly out).

Something like:

popupMenu({
  menu: contextMenu,
  from: {x: event.clientX, y: event.clientY}, // {x, y} (or Event?), or DOMRect (or Element) so it can pop from different spots according to which direction it ends up popping  
  direction: "down right", // preferred direction - may flip or reposition to fit within bounds
  repositionWithinBounds: DOMRect or Element or false, // defaults to page viewport (taking into account scrollbars); false forces the direction you specify to apply
})

Can look at other menu APIs for inspiration/validation.