import ipyleaflet as ipyl
import ipywidgets as ipyw
import json

# Map and label widgets
map = ipyl.Map(center=[53.88, 27.45], zoom=4)
label = ipyw.Label(layout=ipyw.Layout(width="100%"))

# geojson layer with hover handler
with open("./europe_110.geo.json") as f:
    data = json.load(f)
for feature in data["features"]:
    feature["properties"]["style"] = {
        "color": "grey",
        "weight": 1,
        "fillColor": "grey",
        "fillOpacity": 0.5,
    }
layer = ipyl.GeoJSON(data=data, hover_style={"fillColor": "red"})


def hover_handler(event=None, feature=None, id=None, properties=None):
    label.value = properties["geounit"]


layer.on_hover(hover_handler)
map.add(layer)


ipyw.VBox([map, label])

layer.visible = False

layer.visible = True