{
 "cells": [
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "import ipyleaflet as ipyl\n",
    "import ipywidgets as ipyw\n",
    "import json"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "# Map and label widgets\n",
    "map = ipyl.Map(center=[53.88, 27.45], zoom=4)\n",
    "label = ipyw.Label(layout=ipyw.Layout(width='100%'))\n",
    "\n",
    "# geojson layer with hover handler\n",
    "with open('./europe_110.geo.json') as f:\n",
    "    data = json.load(f)\n",
    "for feature in data['features']:\n",
    "    feature['properties']['style'] = {\n",
    "        'color': 'grey',\n",
    "        'weight': 1,\n",
    "        'fillColor': 'grey',\n",
    "        'fillOpacity': 0.5\n",
    "    }\n",
    "layer = ipyl.GeoJSON(data=data, hover_style={'fillColor': 'red'})\n",
    "\n",
    "def hover_handler(event=None, feature=None, id=None, properties=None):\n",
    "    label.value = properties['geounit']\n",
    "\n",
    "layer.on_hover(hover_handler)\n",
    "map.add_layer(layer)\n",
    "\n",
    "\n",
    "ipyw.VBox([map, label])"
   ]
  }
 ],
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   "file_extension": ".py",
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   "nbconvert_exporter": "python",
   "pygments_lexer": "ipython3",
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