react-leaflet/cjs/MapContainer.js

React components for Leaflet maps

"use strict";

exports.__esModule = true;
exports.useMapElement = useMapElement;
exports.MapContainer = MapContainer;

var _core = require("@react-leaflet/core");

var _leaflet = require("leaflet");

var _react = _interopRequireWildcard(require("react"));

function _getRequireWildcardCache(nodeInterop) { if (typeof WeakMap !== "function") return null; var cacheBabelInterop = new WeakMap(); var cacheNodeInterop = new WeakMap(); return (_getRequireWildcardCache = function (nodeInterop) { return nodeInterop ? cacheNodeInterop : cacheBabelInterop; })(nodeInterop); }

function _interopRequireWildcard(obj, nodeInterop) { if (!nodeInterop && obj && obj.__esModule) { return obj; } if (obj === null || typeof obj !== "object" && typeof obj !== "function") { return { default: obj }; } var cache = _getRequireWildcardCache(nodeInterop); if (cache && cache.has(obj)) { return cache.get(obj); } var newObj = {}; var hasPropertyDescriptor = Object.defineProperty && Object.getOwnPropertyDescriptor; for (var key in obj) { if (key !== "default" && Object.prototype.hasOwnProperty.call(obj, key)) { var desc = hasPropertyDescriptor ? Object.getOwnPropertyDescriptor(obj, key) : null; if (desc && (desc.get || desc.set)) { Object.defineProperty(newObj, key, desc); } else { newObj[key] = obj[key]; } } } newObj.default = obj; if (cache) { cache.set(obj, newObj); } return newObj; }

function _extends() { _extends = Object.assign || function (target) { for (var i = 1; i < arguments.length; i++) { var source = arguments[i]; for (var key in source) { if (Object.prototype.hasOwnProperty.call(source, key)) { target[key] = source[key]; } } } return target; }; return _extends.apply(this, arguments); }

function useMapElement(mapRef, props) {
  const [map, setMap] = (0, _react.useState)(null);
  (0, _react.useEffect)(() => {
    if (mapRef.current !== null && map === null) {
      const instance = new _leaflet.Map(mapRef.current, props);

      if (props.center != null && props.zoom != null) {
        instance.setView(props.center, props.zoom);
      } else if (props.bounds != null) {
        instance.fitBounds(props.bounds, props.boundsOptions);
      }

      if (props.whenReady != null) {
        instance.whenReady(props.whenReady);
      }

      setMap(instance);
    }
  }, [mapRef, map, props]);
  return map;
}

function MapContainer({
  children,
  className,
  id,
  placeholder,
  style,
  whenCreated,
  ...options
}) {
  const mapRef = (0, _react.useRef)(null);
  const map = useMapElement(mapRef, options);
  const createdRef = (0, _react.useRef)(false);
  (0, _react.useEffect)(() => {
    if (map != null && createdRef.current === false && whenCreated != null) {
      createdRef.current = true;
      whenCreated(map);
    }
  }, [map, whenCreated]);
  const [props] = (0, _react.useState)({
    className,
    id,
    style
  });
  const context = (0, _react.useMemo)(() => map ? {
    __version: _core.CONTEXT_VERSION,
    map
  } : null, [map]);
  const contents = context ? /*#__PURE__*/_react.default.createElement(_core.LeafletProvider, {
    value: context
  }, children) : placeholder ?? null;
  return /*#__PURE__*/_react.default.createElement("div", _extends({}, props, {
    ref: mapRef
  }), contents);
}