aswi2021codebakers-gitlab/src/app/shared/graph-loading/graphloader.ts @ 6842a0b0

import {Graph} from './graph';
import {EmptyGraph} from "./emptygraph";
import {SingleGraph} from "./singlegraph";
import {MultiGraph} from "./multigraph";

declare var require: any



export class GraphLoader {


  static getGraphType(sensors, data, interval, legend, isAnalytics): Graph {
    if (sensors == null) {
      return new EmptyGraph("No sensors selected.");

    }  else if (Array.isArray(sensors)) {
      if (sensors.length == 0) {
        return new EmptyGraph("No sensors selected.");
      } else if (sensors.length == 1) {
        return new SingleGraph(sensors[0], isAnalytics, data, legend,interval);
      } else {
        return new MultiGraph(isAnalytics, data, legend,interval);
      }

    } else {
      return new SingleGraph(sensors, isAnalytics, data, legend, interval);
    }
  }


  static getGraphWithInterval(sensors, data, interval, legendInfo, element, isAnalytics) {
    let graph = this.getGraphType(sensors,data, interval, legendInfo, isAnalytics);
    let config = graph.getConfig();
    let spec = graph.getSpec();


    this.showGraph(spec, config, element);
  }

  static getGraph(sensors, data, legendInfo, element, isAnalytics) {
    this.getGraphWithInterval(sensors, data, 1800000, legendInfo, element, isAnalytics);
  }


  static showGraph(spec, config, element) {
    const vega = require('vega');
    const vegaTooltip = require('vega-tooltip');
    const handler = new vegaTooltip.Handler();


    const view = new vega.View(vega.parse(spec, config))
      .tooltip(handler.call)
      .initialize(element)
      .hover()
      .runAsync();
  }
}