build collect menu item relev right click popup menu us add gener pop item parent param mous event gener popup collect menu item overrid vector pop action mous event check multipl item select ms target manag instanc target size parent vector vector pop action pop action add menu add extens point note place properti entri argo menu add menu argo menu menu popup add ms add menu add action add extens point singleton add menu add action add note pop action add pop action size popup add offset add menu modifi menu place properti entri pop action add pop action size popup add offset build modifi pop leaf root pop action 