Extension points for plugins
dispatch(map, funcName, leaflet = stop(paste(funcName,
"requires a map proxy object")), leaflet_proxy = stop(paste(funcName,
"does not support map proxy objects")))invokeMethod(map, data, method, ...)
a map object, as returned from leaflet or
leafletProxy
the name of the function that the user called that caused
this dispatch call; for error message purposes
an action to be performed if the map is from
leaflet
an action to be performed if the map is from
leafletProxy
a data object that will be used when evaluating formulas in
...
the name of the JavaScript method to invoke
unnamed arguments to be passed to the JavaScript method
dispatch returns the value of leaflet or
leaflet_proxy, or an error. invokeMethod returns the
map object that was passed in, possibly modified.