<template>
  <div :class="className" :style="{height:height,width:width}"></div>
</template>

<script>
import echarts from 'echarts'
require('echarts/theme/macarons') // echarts 主题

export default {
  props: {
    className: {
      type: String,
      default: 'chart'
    },
    width: {
      type: String,
      default: '100%'
    },
    height: {
      type: String,
      default: '300px'
    }
  },
  data() {
    return {
      chart: null
    }
  },
  mounted() {
    this.initChart()
  },
  beforeDestroy() {
    if (!this.chart) {
      return
    }
    this.chart.dispose()
    this.chart = null
  },
  methods: {
    initChart() {
      this.chart = echarts.init(this.$el, 'macarons')

      this.chart.setOption({
        title: {
          text: 'WEEKLY WRITE ARTICLES',
          x: 'center'
        },
        tooltip: {
          trigger: 'item',
          formatter: '{a} <br/>{b} : {c} ({d}%)'
        },
        legend: {
          x: 'center',
          y: 'bottom',
          data: ['industries', 'technology', 'forex', 'gold', 'forecasts', 'markets']
        },
        calculable: true,
        series: [
          {
            name: 'WEEKLY WRITE ARTICLES',
            type: 'pie',
            roseType: 'radius',
            data: [
              { value: 320, name: 'industries' },
              { value: 240, name: 'technology' },
              { value: 149, name: 'forex' },
              { value: 100, name: 'gold' },
              { value: 59, name: 'forecasts' },
              { value: 49, name: 'markets' }
            ],
            animationEasing: 'cubicInOut',
            animationDuration: 2600
          }
        ]
      })
    }
  }
}
</script>
