javascript - 使用 mxgraph 从现有 XML 字符串构造和呈现图形

Question

我正在尝试使用 mxgraph 在 React 组件内呈现图形（类似于有人使用mxgraph-js fork创建的这个示例）。我希望使用先前通过 mxgraph grapheditor工具创建的现有 XML 字符串来构建此图。

我的 React 组件如下所示：

import React, { Component } from "react";
import * as mxgraph from 'mxgraph';

const { mxClient, mxGraph, mxRubberband, mxUtils, mxEvent, mxKeyHandler, mxCodec } = mxgraph();

class DisplayGraph extends Component {
  constructor(props) {
    super(props);
    this.LoadGraph = this.LoadGraph.bind(this);
  }

  componentDidMount() {
    this.LoadGraph();
  }

  LoadGraph() {
    var container = document.getElementById("divGraph");

    // Checks if the browser is supported
    if (!mxClient.isBrowserSupported()) {
      // Displays an error message if the browser is not supported.
      mxUtils.error("Browser is not supported!", 200, false);
    } else {
      // Disables the built-in context menu
      mxEvent.disableContextMenu(container);

      // Creates the graph inside the given container
      var graph = new mxGraph(container);

      // Gets the default parent for inserting new cells. This is normally the first child of the root (ie. layer 0).
      var parent = graph.getDefaultParent();

      // Enables tooltips, new connections and panning
      graph.setPanning(true);
      graph.setTooltips(true);
      graph.setConnectable(true);
      graph.setEnabled(true);
      graph.setEdgeLabelsMovable(false);
      graph.setVertexLabelsMovable(false);
      graph.setGridEnabled(true);
      graph.setAllowDanglingEdges(false);

      graph.getModel().beginUpdate();

      //construct graph from XML string
      try{
        console.log('Updating the graph');
        //In reality, this string will be fetched from a database. For now, we will use an example string
        let xmlString = '<mxGraphModel dx="116" dy="608" grid="1" gridSize="10" guides="1" tooltips="1" connect="1" arrows="1" fold="1" page="1" pageScale="1" pageWidth="850" pageHeight="1100"><root><mxCell id="0"/><mxCell id="1" parent="0"/><mxCell id="2" value="Template" style="rounded=1;whiteSpace=wrap;html=1;strokeColor=#00ACC1;strokeWidth=5;glass=0;comic=0;gradientColor=#b2ebf2;fillColor=#e0f7fa;fontSize=16;fontColor=#000000;" vertex="1" parent="1"><mxGeometry x="210" y="120" width="200" height="120" as="geometry"/></mxCell><mxCell id="3" value="Sub-Process" style="shape=process;whiteSpace=wrap;html=1;backgroundOutline=1;strokeColor=#ffb74d;strokeWidth=4;perimeterSpacing=0;fontSize=16;gradientColor=#fff3e0;fillColor=#FFFFFF;" vertex="1" parent="1"><mxGeometry x="210" y="260" width="200" height="120" as="geometry"/></mxCell><mxCell id="4" value="End" style="ellipse;whiteSpace=wrap;html=1;aspect=fixed;fontFamily=Helvetica;fontSize=16;fillColor=#ffebee;strokeColor=#f44336;strokeWidth=4;gradientColor=#ffcdd2;" vertex="1" parent="1"><mxGeometry x="240" y="400" width="80" height="80" as="geometry"/></mxCell><mxCell id="5" value="Process" style="shape=process;whiteSpace=wrap;html=1;backgroundOutline=1;strokeColor=#ff9800;strokeWidth=4;perimeterSpacing=0;fontSize=16;gradientColor=#ffe0b2;fillColor=#fff3e0;" vertex="1" parent="1"><mxGeometry x="240" y="500" width="200" height="120" as="geometry"/></mxCell><mxCell id="6" value="Start" style="ellipse;whiteSpace=wrap;html=1;aspect=fixed;fontFamily=Helvetica;fontSize=16;fillColor=#e8f5e9;strokeColor=#4caf50;strokeWidth=4;gradientColor=#c8e6c9;" vertex="1" parent="1"><mxGeometry x="270" y="640" width="80" height="80" as="geometry"/></mxCell><mxCell id="7" value="Start" style="ellipse;whiteSpace=wrap;html=1;aspect=fixed;fontFamily=Helvetica;fontSize=16;fillColor=#e8f5e9;strokeColor=#4caf50;strokeWidth=4;gradientColor=#c8e6c9;" vertex="1" parent="1"><mxGeometry x="270" y="740" width="80" height="80" as="geometry"/></mxCell><mxCell id="8" value="Documentation" style="shape=document;whiteSpace=wrap;html=1;boundedLbl=1;strokeWidth=4;strokeColor=#9C27B0;gradientColor=#E1BEE7;fillColor=#F3E5F5;fontSize=16;" vertex="1" parent="1"><mxGeometry x="270" y="840" width="200" height="120" as="geometry"/></mxCell><mxCell id="9" value="Sub-Process" style="shape=process;whiteSpace=wrap;html=1;backgroundOutline=1;strokeColor=#ffb74d;strokeWidth=4;perimeterSpacing=0;fontSize=16;gradientColor=#fff3e0;fillColor=#FFFFFF;" vertex="1" parent="1"><mxGeometry x="300" y="980" width="200" height="120" as="geometry"/></mxCell><mxCell id="10" value="Template" style="rounded=1;whiteSpace=wrap;html=1;strokeColor=#00ACC1;strokeWidth=5;glass=0;comic=0;gradientColor=#b2ebf2;fillColor=#e0f7fa;fontSize=16;fontColor=#000000;" vertex="1" parent="1"><mxGeometry x="330" y="1120" width="200" height="120" as="geometry"/></mxCell><mxCell id="11" value="Decision" style="rhombus;whiteSpace=wrap;html=1;rounded=0;glass=0;comic=0;labelBackgroundColor=none;strokeColor=#333333;strokeWidth=4;fillColor=#eeeeee;gradientColor=#e5e5e5;fontFamily=Helvetica;fontSize=16;fontColor=#000000;align=center;" vertex="1" parent="1"><mxGeometry x="360" y="1260" width="200" height="120" as="geometry"/></mxCell><mxCell id="12" value="End" style="ellipse;whiteSpace=wrap;html=1;aspect=fixed;fontFamily=Helvetica;fontSize=16;fillColor=#ffebee;strokeColor=#f44336;strokeWidth=4;gradientColor=#ffcdd2;" vertex="1" parent="1"><mxGeometry x="390" y="1400" width="80" height="80" as="geometry"/></mxCell><mxCell id="13" value="Process" style="shape=process;whiteSpace=wrap;html=1;backgroundOutline=1;strokeColor=#ff9800;strokeWidth=4;perimeterSpacing=0;fontSize=16;gradientColor=#ffe0b2;fillColor=#fff3e0;" vertex="1" parent="1"><mxGeometry x="390" y="1500" width="200" height="120" as="geometry"/></mxCell><mxCell id="14" value="Documentation" style="shape=document;whiteSpace=wrap;html=1;boundedLbl=1;strokeWidth=4;strokeColor=#9C27B0;gradientColor=#E1BEE7;fillColor=#F3E5F5;fontSize=16;" vertex="1" parent="1"><mxGeometry x="420" y="1640" width="200" height="120" as="geometry"/></mxCell><mxCell id="15" value="Phase" style="swimlane;html=1;horizontal=0;swimlaneLine=0;rounded=0;glass=0;comic=0;labelBackgroundColor=none;strokeColor=#000000;strokeWidth=4;fillColor=#26C6DA;gradientColor=#00ACC1;fontFamily=Helvetica;fontSize=16;fontColor=#FFFFFF;gradientDirection=east;spacing=0;spacingTop=-4;swimlaneFillColor=none;collapsible=0;" vertex="1" parent="1"><mxGeometry x="450" y="1780" width="1020" height="200" as="geometry"/></mxCell><mxCell id="16" value="Phase" style="swimlane;html=1;horizontal=0;swimlaneLine=0;rounded=0;glass=0;comic=0;labelBackgroundColor=none;strokeColor=#000000;strokeWidth=4;fillColor=#26C6DA;gradientColor=#00ACC1;fontFamily=Helvetica;fontSize=16;fontColor=#FFFFFF;gradientDirection=east;spacing=0;spacingTop=-4;swimlaneFillColor=none;collapsible=0;" vertex="1" parent="1"><mxGeometry x="480" y="2000" width="1020" height="200" as="geometry"/></mxCell><mxCell id="17" value="Phase" style="swimlane;html=1;horizontal=0;swimlaneLine=0;rounded=0;glass=0;comic=0;labelBackgroundColor=none;strokeColor=#000000;strokeWidth=4;fillColor=#26C6DA;gradientColor=#00ACC1;fontFamily=Helvetica;fontSize=16;fontColor=#FFFFFF;gradientDirection=east;spacing=0;spacingTop=-4;swimlaneFillColor=none;collapsible=0;" vertex="1" parent="1"><mxGeometry x="510" y="2220" width="1020" height="200" as="geometry"/></mxCell><mxCell id="18" value="Phase" style="swimlane;html=1;horizontal=0;swimlaneLine=0;rounded=0;glass=0;comic=0;labelBackgroundColor=none;strokeColor=#000000;strokeWidth=4;fillColor=#26C6DA;gradientColor=#00ACC1;fontFamily=Helvetica;fontSize=16;fontColor=#FFFFFF;gradientDirection=east;spacing=0;spacingTop=-4;swimlaneFillColor=none;collapsible=0;" vertex="1" parent="1"><mxGeometry x="540" y="2440" width="1020" height="200" as="geometry"/></mxCell><mxCell id="19" value="Process" style="shape=process;whiteSpace=wrap;html=1;backgroundOutline=1;strokeColor=#ff9800;strokeWidth=4;perimeterSpacing=0;fontSize=16;gradientColor=#ffe0b2;fillColor=#fff3e0;" vertex="1" parent="1"><mxGeometry x="570" y="2660" width="200" height="120" as="geometry"/></mxCell><mxCell id="20" value="Start" style="ellipse;whiteSpace=wrap;html=1;aspect=fixed;fontFamily=Helvetica;fontSize=16;fillColor=#e8f5e9;strokeColor=#4caf50;strokeWidth=4;gradientColor=#c8e6c9;" vertex="1" parent="1"><mxGeometry x="600" y="2800" width="80" height="80" as="geometry"/></mxCell><mxCell id="21" value="Process" style="shape=process;whiteSpace=wrap;html=1;backgroundOutline=1;strokeColor=#ff9800;strokeWidth=4;perimeterSpacing=0;fontSize=16;gradientColor=#ffe0b2;fillColor=#fff3e0;" vertex="1" parent="1"><mxGeometry x="600" y="2900" width="200" height="120" as="geometry"/></mxCell><mxCell id="22" value="Action" style="rounded=1;whiteSpace=wrap;html=1;glass=0;comic=0;labelBackgroundColor=none;strokeColor=#e91e63;strokeWidth=4;fillColor=#fce4ec;gradientColor=#f8bbd0;fontFamily=Helvetica;fontSize=16;fontColor=#000000;" vertex="1" parent="1"><mxGeometry x="630" y="3040" width="280" height="40" as="geometry"/></mxCell><mxCell id="23" value="Process" style="shape=process;whiteSpace=wrap;html=1;backgroundOutline=1;strokeColor=#ff9800;strokeWidth=4;perimeterSpacing=0;fontSize=16;gradientColor=#ffe0b2;fillColor=#fff3e0;" vertex="1" parent="1"><mxGeometry x="660" y="3100" width="200" height="120" as="geometry"/></mxCell><mxCell id="24" value="Sub-Process" style="shape=process;whiteSpace=wrap;html=1;backgroundOutline=1;strokeColor=#ffb74d;strokeWidth=4;perimeterSpacing=0;fontSize=16;gradientColor=#fff3e0;fillColor=#FFFFFF;" vertex="1" parent="1"><mxGeometry x="690" y="3240" width="200" height="120" as="geometry"/></mxCell><mxCell id="25" value="End" style="ellipse;whiteSpace=wrap;html=1;aspect=fixed;fontFamily=Helvetica;fontSize=16;fillColor=#ffebee;strokeColor=#f44336;strokeWidth=4;gradientColor=#ffcdd2;" vertex="1" parent="1"><mxGeometry x="720" y="3380" width="80" height="80" as="geometry"/></mxCell><mxCell id="26" value="Decision" style="rhombus;whiteSpace=wrap;html=1;rounded=0;glass=0;comic=0;labelBackgroundColor=none;strokeColor=#333333;strokeWidth=4;fillColor=#eeeeee;gradientColor=#e5e5e5;fontFamily=Helvetica;fontSize=16;fontColor=#000000;align=center;" vertex="1" parent="1"><mxGeometry x="720" y="3480" width="200" height="120" as="geometry"/></mxCell><mxCell id="27" value="Template" style="rounded=1;whiteSpace=wrap;html=1;strokeColor=#00ACC1;strokeWidth=5;glass=0;comic=0;gradientColor=#b2ebf2;fillColor=#e0f7fa;fontSize=16;fontColor=#000000;" vertex="1" parent="1"><mxGeometry x="750" y="3620" width="200" height="120" as="geometry"/></mxCell><mxCell id="28" value="Process" style="shape=process;whiteSpace=wrap;html=1;backgroundOutline=1;strokeColor=#ff9800;strokeWidth=4;perimeterSpacing=0;fontSize=16;gradientColor=#ffe0b2;fillColor=#fff3e0;" vertex="1" parent="1"><mxGeometry x="780" y="3760" width="200" height="120" as="geometry"/></mxCell><mxCell id="29" value="Start" style="ellipse;whiteSpace=wrap;html=1;aspect=fixed;fontFamily=Helvetica;fontSize=16;fillColor=#e8f5e9;strokeColor=#4caf50;strokeWidth=4;gradientColor=#c8e6c9;" vertex="1" parent="1"><mxGeometry x="810" y="3900" width="80" height="80" as="geometry"/></mxCell><mxCell id="30" value="Documentation" style="shape=document;whiteSpace=wrap;html=1;boundedLbl=1;strokeWidth=4;strokeColor=#9C27B0;gradientColor=#E1BEE7;fillColor=#F3E5F5;fontSize=16;" vertex="1" parent="1"><mxGeometry x="810" y="4000" width="200" height="120" as="geometry"/></mxCell><mxCell id="31" value="Phase" style="swimlane;html=1;horizontal=0;swimlaneLine=0;rounded=0;glass=0;comic=0;labelBackgroundColor=none;strokeColor=#000000;strokeWidth=4;fillColor=#26C6DA;gradientColor=#00ACC1;fontFamily=Helvetica;fontSize=16;fontColor=#FFFFFF;gradientDirection=east;spacing=0;spacingTop=-4;swimlaneFillColor=none;collapsible=0;" vertex="1" parent="1"><mxGeometry x="840" y="4140" width="1020" height="200" as="geometry"/></mxCell><mxCell id="32" value="Action" style="rounded=1;whiteSpace=wrap;html=1;glass=0;comic=0;labelBackgroundColor=none;strokeColor=#e91e63;strokeWidth=4;fillColor=#fce4ec;gradientColor=#f8bbd0;fontFamily=Helvetica;fontSize=16;fontColor=#000000;" vertex="1" parent="1"><mxGeometry x="870" y="4360" width="280" height="40" as="geometry"/></mxCell><mxCell id="33" value="Documentation" style="shape=document;whiteSpace=wrap;html=1;boundedLbl=1;strokeWidth=4;strokeColor=#9C27B0;gradientColor=#E1BEE7;fillColor=#F3E5F5;fontSize=16;" vertex="1" parent="1"><mxGeometry x="900" y="4420" width="200" height="120" as="geometry"/></mxCell><mxCell id="34" value="Phase" style="swimlane;html=1;horizontal=0;swimlaneLine=0;rounded=0;glass=0;comic=0;labelBackgroundColor=none;strokeColor=#000000;strokeWidth=4;fillColor=#26C6DA;gradientColor=#00ACC1;fontFamily=Helvetica;fontSize=16;fontColor=#FFFFFF;gradientDirection=east;spacing=0;spacingTop=-4;swimlaneFillColor=none;collapsible=0;" vertex="1" parent="1"><mxGeometry x="930" y="4560" width="1020" height="200" as="geometry"/></mxCell><mxCell id="35" value="Process" style="shape=process;whiteSpace=wrap;html=1;backgroundOutline=1;strokeColor=#ff9800;strokeWidth=4;perimeterSpacing=0;fontSize=16;gradientColor=#ffe0b2;fillColor=#fff3e0;" vertex="1" parent="1"><mxGeometry x="960" y="4780" width="200" height="120" as="geometry"/></mxCell><mxCell id="36" value="Sub-Process" style="shape=process;whiteSpace=wrap;html=1;backgroundOutline=1;strokeColor=#ffb74d;strokeWidth=4;perimeterSpacing=0;fontSize=16;gradientColor=#fff3e0;fillColor=#FFFFFF;" vertex="1" parent="1"><mxGeometry x="990" y="4920" width="200" height="120" as="geometry"/></mxCell><mxCell id="37" value="Process" style="shape=process;whiteSpace=wrap;html=1;backgroundOutline=1;strokeColor=#ff9800;strokeWidth=4;perimeterSpacing=0;fontSize=16;gradientColor=#ffe0b2;fillColor=#fff3e0;" vertex="1" parent="1"><mxGeometry x="1020" y="5060" width="200" height="120" as="geometry"/></mxCell></root></mxGraphModel>';
        var doc = mxUtils.parseXml(xmlString);
        var codec = new mxCodec(doc);
        codec.decode(doc.documentElement, graph.getModel());
        graph.fit();
      }catch(error){
        console.log('An exception occurred while updating the graph:');
        console.log(error);
      }finally{
        graph.getModel().endUpdate();
        console.log('Graph updating ended');
      }

      // Enables rubberband (marquee) selection and a handler for basic keystrokes
      var rubberband = new mxRubberband(graph);
      var keyHandler = new mxKeyHandler(graph);
    }
  }

  render() {
    console.log('DisplayGraph Rendered!');
    return (
        <div className="graph-container" ref="divGraph" id="divGraph" style={{height: "calc(100vh-120px)", width: "100%"}}></div>
    );
  }
}

export default DisplayGraph;

当这个 React 组件 (DisplayGraph) 在我的 React 应用程序中构建和呈现时，该图永远不会出现。尽管它似乎确实在初始化图形对象，但由于容器 div（id “divGraph”）在右键单击时没有上下文菜单，但mxEvent.disableContextMenu(container). 当我单击并拖动空 div 时，我可以看到一个新的 divmxRubberband出现，并在拖动光标时实时更改其左/上/宽/高样式。

检查时，容器 div 在 DOM 中如下所示：

<div class="graph-container" id="divGraph" style="width: 100%; position: relative; touch-action: none;">
  <svg style="left: 0px; top: 0px; width: 100%; height: 100%; display: block; min-width: 1px; min-height: 1px;">
    <g>
      <g></g>
      <g></g>
      <g></g>
      <g></g>
    </g>
  </svg>
</div>

更改由 mxUtils 解析的 XML 字符串似乎永远不会更改在 React 组件中呈现的实际图形；<g>无论我传入什么 XMLString ，它似乎总是有 4 个空元素mxUtils.parseXml()。

我尝试了一些不同的方法，例如此处详细介绍的方法、此处​​以及此处的文档示例，但无济于事。使用此组件时，控制台中不会出现任何错误，因此我不完全确定问题出在哪里。

可能值得注意的是，当通过graph.insertVertexandgraph.insertEdge方法手动插入顶点和边时，我可以成功构造和渲染图形，如下所示：

import React, { Component } from "react";
import * as mxgraph from 'mxgraph';

const { mxClient, mxGraph, mxRubberband, mxUtils, mxEvent, mxKeyHandler } = mxgraph();

class DisplayGraph extends Component {
  constructor(props) {
    super(props);
    this.LoadGraph = this.LoadGraph.bind(this);
  }

  componentDidMount() {
    this.LoadGraph();
  }

  LoadGraph() {
    var container = document.getElementById("divGraph");

    // Checks if the browser is supported
    if (!mxClient.isBrowserSupported()) {
      // Displays an error message if the browser is not supported.
      mxUtils.error("Browser is not supported!", 200, false);
    } else {
      // Disables the built-in context menu
      mxEvent.disableContextMenu(container);

      // Creates the graph inside the given container
      var graph = new mxGraph(container);

      // Enables rubberband selection
      new mxRubberband(graph);

      // Gets the default parent for inserting new cells. This is normally the first
      // child of the root (ie. layer 0).
      var parent = graph.getDefaultParent();

      // Enables tooltips, new connections and panning
      graph.setPanning(true);
      graph.setTooltips(true);
      graph.setConnectable(true);
      graph.setEnabled(true);
      graph.setEdgeLabelsMovable(false);
      graph.setVertexLabelsMovable(false);
      graph.setGridEnabled(true);
      graph.setAllowDanglingEdges(false);

      graph.getModel().beginUpdate();
      try {
        //mxGraph component
        var doc = mxUtils.createXmlDocument();
        var node = doc.createElement("Node");
        node.setAttribute("ComponentID", "[P01]");

        var vx = graph.insertVertex(
          parent,
          null,
          node,
          240,
          40,
          150,
          30,
          "shape=ellipse;fillColor=yellow"
        );

        var v1 = graph.insertVertex(
          parent,
          null,
          "shape1",
          20,
          120,
          80,
          30,
          "rounded=1;strokeColor=red;fillColor=orange"
        );
        var v2 = graph.insertVertex(parent, null, "shape2", 300, 120, 80, 30);
        var v3 = graph.insertVertex(parent, null, "shape3", 620, 180, 80, 30);
        var e1 = graph.insertEdge(
          parent,
          null,
          "",
          v1,
          v2,
          "strokeWidth=2;endArrow=block;endSize=2;endFill=1;strokeColor=blue;rounded=1;"
        );
        var e2 = graph.insertEdge(parent, null, "Edge 2", v2, v3);
        var e3 = graph.insertEdge(parent, null, "Edge 3", v1, v3);

        //data
      } finally {
        // Updates the display
        graph.getModel().endUpdate();
      }

      // Enables rubberband (marquee) selection and a handler for basic keystrokes
      var rubberband = new mxRubberband(graph);
      var keyHandler = new mxKeyHandler(graph);
    }
  }

  render() {
    return (
        <div className="graph-container" ref="divGraph" id="divGraph"></div>
    );
  }
}

export default DisplayGraph;

所以该模块似乎正在运行，但我无法弄清楚为什么我传入的 XML 字符串mxUtils.parseXml()没有被正确解析/呈现。

非常感谢任何见解。

标签： javascriptnode.jsxmlreactjsmxgraph

Answer 1

这个问题基本上是因为您使用的库是 1.0.1 mxgraph-js版本，这个库非常基础，具有最新版本 4.0.6 mxgraph带来的其他功能。为了使您的原型能够工作，您必须导入更新版本的 mxgraph，并且必须使用标签来执行此操作。

import React, { Component } from "react";
import PropTypes from "prop-types";
import ReactDOM from "react-dom";

class Graph extends React.Component{

  constructor(props) {
    super(props);
    this.state = {};
    this.containerId = "divGraph";
    this.LoadGraph = this.LoadGraph.bind(this);
  }

  componentDidMount() {
   var that= this;


   const script = document.createElement("script");    
   // script.src = "https://unpkg.com/mxgraph@3.9.8/javascript/mxClient.js";
   script.src = "https://unpkg.com/mxgraph@4.0.6/javascript/mxClient.js";
   script.async = true;    
   document.body.appendChild(script);


    setTimeout(() => {
      if(that.refs && this.refs.divGraph){
        console.log(20,mxClient);
        that.LoadGraph();
      };
    },1000)
  }

  LoadGraph() {

    var container = ReactDOM.findDOMNode(this.refs.divGraph);
    var zoomPanel = ReactDOM.findDOMNode(this.refs.divZoom);
    var xmlString='<mxGraphModel dx="492" dy="658" grid="1" gridSize="10" guides="1" tooltips="1" connect="1" arrows="1" fold="1" page="1" pageScale="1" pageWidth="827" pageHeight="1169">  <root>    <mxCell id="0" />    <mxCell id="1" parent="0" />    <mxCell id="2" value="" style="rounded=0;whiteSpace=wrap;html=1;" parent="1" vertex="1">      <mxGeometry x="20" y="20" width="120" height="60" as="geometry" />    </mxCell>    <mxCell id="3" value="" style="whiteSpace=wrap;html=1;aspect=fixed;"parent="1" vertex="1">      <mxGeometry x="20" y="100" width="80" height="80" as="geometry" />    </mxCell>    <mxCell id="4" value="" style="ellipse;whiteSpace=wrap;html=1;aspect=fixed;" parent="1" vertex="1">      <mxGeometry x="20" y="200" width="80" height="80" as="geometry" />    </mxCell>    <mxCell id="5" value="" style="triangle;whiteSpace=wrap;html=1;" parent="1" vertex="1">      <mxGeometry x="20" y="300" width="60" height="80"as="geometry" />    </mxCell>    <mxCell id="6" value="" style="shape=hexagon;perimeter=hexagonPerimeter2;whiteSpace=wrap;html=1;" parent="1" vertex="1">      <mxGeometry x="20" y="400" width="120" height="80" as="geometry" />    </mxCell>  </root></mxGraphModel>';

    if (!mxClient.isBrowserSupported()) {
      mxUtils.error("Browser is not supported!", 200, false);
    } else {
      this.container = document.getElementById(this.containerId);
      this.model = new mxGraphModel();
      var graph = new mxGraph(this.container, this.model);
      const parent = graph.getDefaultParent();

      this.model.beginUpdate();
            try
            {
        let xmlString = '<mxGraphModel dx="116" dy="608" grid="1" gridSize="10" guides="1" tooltips="1" connect="1" arrows="1" fold="1" page="1" pageScale="1" pageWidth="850" pageHeight="1100"><root><mxCell id="0"/><mxCell id="1" parent="0"/><mxCell id="2" value="Template" style="rounded=1;whiteSpace=wrap;html=1;strokeColor=#00ACC1;strokeWidth=5;glass=0;comic=0;gradientColor=#b2ebf2;fillColor=#e0f7fa;fontSize=16;fontColor=#000000;" vertex="1" parent="1"><mxGeometry x="210" y="120" width="200" height="120" as="geometry"/></mxCell><mxCell id="3" value="Sub-Process" style="shape=process;whiteSpace=wrap;html=1;backgroundOutline=1;strokeColor=#ffb74d;strokeWidth=4;perimeterSpacing=0;fontSize=16;gradientColor=#fff3e0;fillColor=#FFFFFF;" vertex="1" parent="1"><mxGeometry x="210" y="260" width="200" height="120" as="geometry"/></mxCell><mxCell id="4" value="End" 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        var doc = mxUtils.parseXml(xmlString);
        var codec = new mxCodec(doc);
        codec.decode(doc.documentElement, graph.getModel());
            }
            finally
            {
                graph.model.endUpdate();
            }
    }
  }
  render() {
    return <div className="graph-container" ref="divGraph" id="divGraph" />;
  }
}

export default Graph;