onPathSelected property
Called with the path to the selected item, for every selection.
Each step is an index in a list of entries, dividers included: [3]
is items[3], and [2, 1] the second entry of the submenu at
items[2]. A path always ends on a CNPopupMenuItem.
Required when items contain a CNPopupMenuSubmenu.
Implementation
final ValueChanged<List<int>>? onPathSelected;