{
 "cells": [
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "from ipyleaflet import basemaps, basemap_to_tiles, Map, WidgetControl\n",
    "from ipywidgets import Dropdown"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "m = Map(center=[0, 0], zoom=2)\n",
    "\n",
    "ee_basemaps = {}\n",
    "\n",
    "# Loops through all ipyleaflet basemaps\n",
    "for item in basemaps.values():\n",
    "    try:\n",
    "        name = item[\"name\"]\n",
    "        basemap = \"basemaps.{}\".format(name)\n",
    "        ee_basemaps[name] = basemap_to_tiles(eval(basemap))\n",
    "    except Exception as e:\n",
    "        for sub_item in item:\n",
    "            name = item[sub_item][\"name\"]\n",
    "            basemap = \"basemaps.{}\".format(name)\n",
    "            basemap = basemap.replace(\"Mids\", \"Modis\")\n",
    "            ee_basemaps[name] = basemap_to_tiles(eval(basemap))\n",
    "\n",
    "# Adds a Dropdown widget\n",
    "dropdown = Dropdown(\n",
    "    options=list(ee_basemaps.keys()),\n",
    "    value=\"OpenStreetMap.Mapnik\",\n",
    "    description=\"Basemaps\",\n",
    ")\n",
    "\n",
    "\n",
    "# Handles Dropdown control event\n",
    "def on_click(change):\n",
    "    basemap_name = change[\"new\"]\n",
    "    old_basemap = m.layers[-1]\n",
    "    m.substitute_layer(old_basemap, ee_basemaps[basemap_name])\n",
    "\n",
    "\n",
    "dropdown.observe(on_click, \"value\")\n",
    "\n",
    "# Adds control to the map\n",
    "basemap_control = WidgetControl(widget=dropdown, position=\"topright\")\n",
    "m.add(basemap_control)\n",
    "\n",
    "m"
   ]
  }
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