class ResizeChart {

  /**
   * 监听
   * @param {Array | Object} charts 
   */
  on(charts) {
    window.addEventListener('resize', ()=>{
      if (Array.isArray(charts) && charts.length) {
        for (let k = 0; k < charts.length; k++) {
          const el = charts[k];
          if (el.echart) el.echart.resize()
        }
      }else{
        charts.resize()
      }      
    })
  }

  /**
   * 移除监听
   * @param {Array | Object} charts 
   */
  off(charts) {
    window.removeEventListener('resize', ()=>{
      if (Array.isArray(charts) && charts.length) {
        for (let k = 0; k < charts.length; k++) {
          const el = charts[k];
          if (el.echart) el.echart.dispose()
        }
      }else{
        charts.dispose()
      }
    })
  }
}




export default new ResizeChart()