#!/usr/bin/env python
# coding: utf-8

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from ipyleaflet import *
from ipywidgets import *

m = Map(center=(52, 10), zoom=8)

tl = TileLayer(url="https://{s}.tile.opentopomap.org/{z}/{x}/{y}.png")
m.add(tl)

label = Label(value="Not Loading")


def on_load_change(change):
    loading = change["new"]
    label.value = str("Loading..." if loading else "Not Loading")


tl.observe(on_load_change, "loading")

display(m)
display(label)

# move the map, zoom out or zoom in to see the Label change from 'Loading...' to 'Not Loading'


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