Enable/Disable a contextmenu item by index.
setDisabledContextmenu(map, index, disabled = TRUE)a map widget object created from leaflet
Index of the contextmenu. (NOTE: Since the index is passed to JavaScript, it is zero-based)
Set to TRUE to disable the element and FALSE
to enable it. Default is TRUE
A leaflet map object
Other Contextmenu Functions:
addContextmenu(),
addItemContextmenu(),
hideContextmenu(),
insertItemContextmenu(),
mapmenuItems(),
markermenuItems(),
menuItem(),
removeItemContextmenu(),
removeallItemsContextmenu(),
showContextmenu()