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| <template>
| <!-- 选项 -->
| <div class="options">
| <el-form :inline="true">
| <!-- <el-form-item>
| <el-option
| v-model="charType"
| v-for="type of charTypeOptions"
| :key="type"
| :value="type"
| :label="type"
| ></el-option>
| </el-form-item> -->
| <el-form-item>
| <el-select
| v-model="charType"
| style="width: 150px"
| placeholder="请选择图表类型"
| >
| <el-option
| v-for="item in charTypeOptions"
| :key="item.value"
| :value="item.value"
| :label="item.label"
| ></el-option>
| </el-select>
| </el-form-item>
| <el-form-item>
| <el-select
| v-model="selectHeader"
| style="width: 200px"
| @change="onSelectHeaderChange"
| value-key="id"
| placeholder="请选择展示的列"
| >
| <el-option
| v-for="item in allHeader"
| :key="item.id"
| :value="item"
| :label="item.label"
| ></el-option>
| </el-select>
| </el-form-item>
| </el-form>
| </div>
| <div ref="myChart" id="myChart" class="chart"></div>
| <el-button type="primary" @click="ok()">确定</el-button>
| </template>
| <script>
| export default {
| props: {
| tableHeader: {
| type: Array,
| required: true
| },
| tableData: {
| type: Array,
| required: true
| }
| },
| computed: {
| allHeader() {
| return this.treeToArray(this.tableHeader);
| }
| },
| data() {
| return {
| selectHeader: null,
| charType: null,
| charTypeOptions: [
| {
| label: '直方图',
| value: 'bar'
| },
| {
| label: '折线图',
| value: 'line'
| },
| {
| label: '饼图',
| value: 'pie'
| }
| ],
|
| charts: [],
| chart: {}
| };
| },
| mounted() {
| // this.setChartOptions('myChart', this.header.prop, this.header.label);
| // this.selectHeader = this.tableHeader[0]
| },
| methods: {
| getChartObj() {
| return this.chart;
| },
| ok() {
| let option = this.setChartOptions(
| 'myChart',
| this.selectHeader.prop,
| this.selectHeader.label
| );
| this.$emit('painted-chart', option);
| },
| onSelectHeaderChange() {
| this.setChartOptions(
| 'myChart',
| this.selectHeader.prop,
| this.selectHeader.label
| );
| },
| // 递归的获取obj中的prop属性
| getPropValueLoop(obj, prop) {
| if (typeof prop !== 'string') {
| return obj;
| }
| const props = prop.split('.');
| let result = obj;
| props.forEach((item) => {
| result = result[item];
| });
| return result;
| },
| addChart(ref) {},
| setChartOptions(refName, prop, label) {
| let series = this.tableData.map((item) =>
| this.getPropValueLoop(item, prop)
| );
|
| const dom = this.$refs[refName];
| const myChart = this.$echarts.init(dom); // 初始化echarts实例
| this.chart = myChart;
| const option = {
| title: {
| text: label //设置我们的标题
| },
| tooltip: {
| trigger: 'item'
| },
| legend: {
| orient: 'vertical',
| left: 'left'
| },
| xAxis: {
| type: 'category',
| data: Array.from(new Set(series)),
| axisLabel: {
| rotate: 45, // 旋转标签，避免重叠
| // 或者
| interval: 0 // 显示所有标签，可能导致重叠，根据需求调整
| }
| },
| yAxis: {
| type: 'value'
| },
| series: [
| {
| data: Array.from(new Set(series)).map((item) =>
| this.getCount(series, item)
| ),
| type: this.charType,
| smooth: true
| }
| ]
| };
| // 设置实例参数
| myChart.setOption(option);
| return option;
| },
|
| getCount(array, element) {
| let count = 0;
| array.forEach((e) => {
| if (e == element) {
| count++;
| }
| });
| return count;
| },
| treeToArray(nodes) {
| let labels = [];
|
| function traverseNodes(nodes) {
| nodes.forEach((node) => {
| labels.push(node);
|
| // 如果当前节点有子节点，递归调用遍历函数
| if (node.children && node.children.length > 0) {
| traverseNodes(node.children);
| }
| });
| }
|
| traverseNodes(nodes); // 开始递归遍历
|
| return labels; // 返回收集到的 labels 数组
| }
| }
| };
| </script>
| <style scoped>
| .options {
| display: flex;
| margin: 5px;
| margin-left: 0px;
| }
| .chart {
| width: 'auto';
| height: 500px;
| }
| </style>
|
|
