无法加载不同标签中的相同Highchart-仅加载第一个标签

时间:2018-11-16 09:32:59

标签: angular highcharts

我正在尝试使用选项卡更改中的不同数据更新相同的图表。 因此,我的父组件具有这种形式的子组件 app-chart-metric-view 。我已经为mat选项卡组包括了选项卡事件检测。

AdminConsolecomponent.html

<mat-tab-group mat-stretch-tabs class="mat-elevation-z4" (selectedTabChange)="tabChanged($event)">
  <mat-tab label="Enable Plugin">
    <div class="button-row">
      <button mat-raised-button class="activation-buttons" (click)="openAddPluginDialog()">Add
        plugin
      </button>
    </div>
 </mat-tab>

  <mat-tab label="Chart1">
    <app-chart-metric-view></app-chart-metric-view>
  </mat-tab>

  <mat-tab label="Chart2">
    <app-chart-metric-view></app-chart-metric-view>
  </mat-tab>


</mat-tab-group>

我检测到选项卡的选项卡更改,一旦触发,我在子组件中调用该函数(借助@viewChild),该函数向后端发出请求,获取并设置数据并显示。

此外,我还将标签的标签发送到后端,并根据该标签接收到的数据进行了更改。问题是图表正在加载第一个标签,但后续标签没有加载。

AdminConsolecomponent.ts

import { ChartMetricViewComponent } from '../chart-metric-view/chart-metric-view.component';

    export class AdminConsoleComponent {

      @ViewChild( ChartMetricViewComponent ) child: ChartMetricViewComponent ; 

      constructor(//some components) { }
      ngOnInit() {
      //some functions
      }

      tabChanged = (tabChangeEvent: MatTabChangeEvent): void => {
        if(tabChangeEvent.index !=0) {
          this.child.shfk(tabChangeEvent.tab.textLabel);

      }

}

chart-metric-view-component.ts

export class ChartMetricViewComponent implements OnInit {

  metricItems: MetricItem[] = [];
  constructor(public utility: ControltowerUtilityService, public metricService: MetricDataService, private chartService: ChartDataService) { }

  @ViewChild('chartTarget') chartTarget: ElementRef;
  @ViewChild('chartTarget2') chartTarget2: ElementRef;

  chart: Highcharts.ChartObject;
  chart2: Highcharts.ChartObject

  public shfk(textLabel) {

    this.chartService.getPluginMetrics(textLabel).subscribe(data => {

      this.metricItems = data;


      const options: Highcharts.Options = {
        chart: {
          type: 'column'
        },
        title: {
          text: 'Stacked Consumption chart'
        },
        xAxis: {
          categories: ['Jan', 'Feb', 'March', 'April', 'May', 'June', 'July', 'Aug', 'Sep', 'Oct', 'Nov', 'Dec']
        },
        yAxis: {
          min: 0,
          title: {
            text: 'Bitbucket Consumption in TBs'
          },
          stackLabels: {
            enabled: true,
            style: {
              fontWeight: 'bold',
            }
          }
        },
        legend: {
          align: 'right',
          x: -30,
          verticalAlign: 'top',
          y: 25,
          floating: true,
          borderColor: '#CCC',
          borderWidth: 1,
          shadow: false
        },
        tooltip: {
          headerFormat: '<b>{point.x}</b><br/>',
          pointFormat: '{series.name}: {point.y}<br/>Total: {point.stackTotal}'
        },
        plotOptions: {
          column: {
            stacking: 'normal',
            dataLabels: {
              enabled: true,
            }
          }
        },
        series: [{
          name: this.metricItems[0].name,
          data: JSON.parse(" [ "+ this.metricItems[0].value+"]")//this.A //JSON.parse("["+this.metricItems[0].value+"]")//[5, 3, 4, 7, 2, 6] {this.A}
        }, {
          name: this.metricItems[1].name,
          data: JSON.parse("["+this.metricItems[1].value+"]")
        }, {
          name: this.metricItems[2].name,
          data: JSON.parse("["+this.metricItems[2].value+"]")
        }, {
          name: this.metricItems[3].name,
          data: JSON.parse("["+this.metricItems[3].value+"]")
        }, {
          name: this.metricItems[4].name,
          data: JSON.parse("["+this.metricItems[4].value+"]")
        }]

      };

      this.chart = chart(this.chartTarget.nativeElement, options);

    });
}

在更改标签后,我已确认正在发出请求,并且收到正确的回复,但无法更新图表。有人可以帮忙吗? 谢谢

发现了类似的问题,但仍无法弄清

highcharts not loading in tabs

HIghcharts & Bootstrap: Chart on Tab 2 is not appearing. Though First chart is working fine

1 个答案:

答案 0 :(得分:1)

解决此问题的方法是使用“ 延迟加载”概念,该概念在“角度材料”选项卡上受支持。

只需在具有ng-template属性的matTabContent中声明组件highchart即可:

<mat-tab label="Chart1">
 <ng-template matTabContent>
   <app-chart-metric-view></app-chart-metric-view>
 </ng-template>
</mat-tab>

您可以查看MatTab延迟加载here的文档

我不知道您是否已经做到了,但这仍然可以帮助其他有类似问题的人