superset-frontend/plugins/plugin-chart-echarts/src/components/Echart.tsx

/**
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */
import React, { useRef, useEffect } from 'react';
import { styled } from '@superset-ui/core';
import { ECharts, init } from 'echarts';
import { EchartsProps, EchartsStylesProps } from '../types';

const Styles = styled.div<EchartsStylesProps>`
  height: ${({ height }) => height};
  width: ${({ width }) => width};
`;

export default function Echart({ width, height, echartOptions }: EchartsProps) {
  const divRef = useRef<HTMLDivElement>(null);
  const chartRef = useRef<ECharts>();

  useEffect(() => {
    if (!divRef.current) return;
    if (!chartRef.current) {
      chartRef.current = init(divRef.current);
    }
    chartRef.current.setOption(echartOptions, true);
  }, [echartOptions]);

  useEffect(() => {
    if (chartRef.current) {
      chartRef.current.resize({ width, height });
    }
  }, [width, height]);

  return <Styles ref={divRef} height={height} width={width} />;
}