text: import echarts from 'echarts';
  import 'echarts-gl'
  import Observable from '@/modules/observer/observer';
  
  export default class EchartBase extends Observable {
    constructor() {
      super();
      this.echartInstance = null;
    }
    getEcharsInstance() {
      return this.echartInstance;
    }
    resize() {
      this.echartInstance && this.echartInstance.resize();
    }
    registerMap(json) {
      echarts.registerMap('china', json);
    }
    load(options, parent, theme) {
      if (!options) {
        return;
      }
      if (this.echartInstance) {
        this.echartInstance.clear();
      } else {
        this.echartInstance = echarts.init(parent, theme);
      }
      this.setOption(options);
    }
    setDataSource() {}
    setOption(options) {
      this.option = options;
      this.echartInstance && this.echartInstance.setOption(options);
    }
    getOption() {
      return this.option ? this.option : {};
    }
    destroy() {
      this.echartInstance && this.echartInstance.clear();
      this.echartInstance = null;
    }
  }
  