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

<script>
  export default {
    props: {
      className: {
        type: String,
        default: 'chart'
      },
      width: {
        type: String,
        default: '100%'
      },
      height: {
        type: String,
        default: '300px'
      }
    },
    data() {
      return {
        chart: null
      }
    },
    mounted() {
      // 将回调延迟到下次DOM更新循环之后执行
      this.$nextTick(() => {
        this.initChart()
      })
    },
    // 实例销毁之前调用
    beforeDestroy() {
      if (!this.chart) {
        return
      }
      this.chart.dispose()
      this.chart = null
    },
    methods: {
      initChart() {
        this.chart = echarts.init(this.$el, 'light')
        this.chart.setOption({
          tooltip: {
            trigger: 'axis',
            axisPointer: { // 坐标轴指示器，坐标轴触发有效
              type: 'shadow' // 默认为直线，可选为：'line' | 'shadow'
            }
          },
          grid: {
            top: 10,
            left: '2%',
            right: '2%',
            bottom: '3%',
            containLabel: true
          },
          xAxis: [{
            type: 'category',
            data: ['星期一', '星期二', '星期三', '星期四', '星期五', '星期六', '星期日'],
            axisTick: {
              alignWithLabel: true
            }
          }],
          yAxis: [{
            type: 'value',
            axisTick: {
              show: false
            }
          }],
          series: [{
            name: 'pageA',
            type: 'bar', // 柱状图
            stack: 'vistors',
            barWidth: '60%',
            data: [79, 52, 200, 334, 390, 330, 220],
            animationDuration: 6000
          }, {
            name: 'pageB',
            type: 'bar',
            stack: 'vistors',
            barWidth: '60%',
            data: [80, 52, 200, 334, 390, 330, 220],
            animationDuration: 6000
          }, {
            name: 'pageC',
            type: 'bar',
            stack: 'vistors',
            barWidth: '60%',
            data: [30, 52, 200, 334, 390, 330, 220],
            animationDuration: 6000
          }]
        })
      }
    }
  }
</script>
