@pansy/react-mapbox-gl/es/components/Source/source.js

🌍 基于 Mapbox GL 封装的 React 组件库

// src/components/Source/source.tsx
import React, { useEffect, useState, useRef, useMemo, cloneElement } from "react";
import { useMap } from "../../hooks/useMap";
import { isStyleLoaded } from "../../utils/isStyleLoaded";
import { updateSource, createSource } from "./utils";
var sourceCounter = 0;
function Source(props) {
  const { map } = useMap();
  const propsRef = useRef(props);
  const [, setStyleLoaded] = useState(0);
  const id = useMemo(() => props.id || `jsx-source-${sourceCounter++}`, []);
  useEffect(() => {
    if (map) {
      const forceUpdate = () => setTimeout(() => setStyleLoaded((version) => version + 1), 0);
      map.on("styledata", forceUpdate);
      forceUpdate();
      return () => {
        var _a;
        map.off("styledata", forceUpdate);
        if (map.getStyle() && isStyleLoaded(map) && map.getSource(id)) {
          const allLayers = (_a = map.getStyle()) == null ? void 0 : _a.layers;
          if (allLayers) {
            for (const layer of allLayers) {
              if (layer.source === id) {
                map.removeLayer(layer.id);
              }
            }
          }
          map.removeSource(id);
        }
      };
    }
    return void 0;
  }, [map]);
  let source = map && map.getStyle() && map.getSource(id);
  if (source) {
    updateSource(source, props, propsRef.current);
  } else {
    source = createSource(map, id, props);
  }
  propsRef.current = props;
  return source && React.Children.map(
    props.children,
    (child) => child && cloneElement(child, {
      source: id
    })
  ) || null;
}
export {
  Source
};