<template>
	<view>
		<view @click="echarts.onClick" :prop="option" :change:prop="echarts.updateEcharts" id="echarts" class="echarts">
		</view>
	</view>
</template>

<script>
	export default {
		name: 'chartModel',
		props: {
			fatherData: {
				type: Object,
				default: function() {
					return {};
				}
			},
		},
		data() {
			return {
				option: {
					title: {
						text: 'ECharts 入门示例'
					},
					tooltip: {},
					legend: {
						data: ['销量']
					},
					xAxis: {
						data: ["衬衫", "羊毛衫", "雪纺衫", "裤子", "高跟鞋", "袜子"]
					},
					yAxis: {},
					series: [{
						name: '销量',
						type: 'bar',
						data: [5, 20, 36, 10, 10, 20]
					}]
				}
			}
		},
		methods: {

		}
	}
</script>
<script module="echarts" lang="renderjs">
	let myChart
	export default {
		mounted() {
			if (typeof window.echarts === 'function') {
				this.initEcharts()
			} else {
				// 动态引入较大类库避免影响页面展示
				const script = document.createElement('script')
				// view 层的页面运行在 www 根目录，其相对路径相对于 www 计算
				script.src = '/static/js/echarts.js'
				script.onload = this.initEcharts.bind(this)
				document.head.appendChild(script)
			}
		},
		methods: {
			initEcharts() {
				myChart = echarts.init(document.getElementById('echarts'))
				// 观测更新的数据在 view 层可以直接访问到

				myChart.setOption(this.option)
			},
			updateEcharts(newValue, oldValue, ownerInstance, instance) {
				// 监听 service 层数据变更
				myChart.setOption(newValue)
			},
			onClick(event, ownerInstance) {
				// 调用 service 层的方法
				ownerInstance.callMethod('onViewClick', {
					test: 'test'
				})
			}
		}
	}
</script>
<style>

</style>
