javascriptreactjsgojs

Using GoJs in ReactJs


im trying to create a parser tree in React Js for a NLP/POS-tagger project.i found that GoJs provides a cool parser tree GoJs-parser-tree,but i could not find documentation for react js implementation. i tried out some examples but i could not use it with react heres my code that i need to use it in react

<!DOCTYPE html>
<html>
<head>
<title>Parse Tree</title>
<meta name="description" content="A collapsible tree layout with all of the leaf nodes at the same layer." />
  <!-- Copyright 1998-2016 by Northwoods Software Corporation. -->
  <meta charset="UTF-8">
  <script src="go.js"></script>
  <link href="../assets/css/goSamples.css" rel="stylesheet" type="text/css" />  <!-- you don't need to use this -->
  <script src="goSamples.js"></script>  <!-- this is only for the GoJS Samples framework -->
  <script id="code">
    function init() {
      if (window.goSamples) goSamples();  // init for these samples -- you don't need to call this
      var $ = go.GraphObject.make;  // for conciseness in defining templates
      myDiagram =
        $(go.Diagram, "myDiagramDiv",
          {
            allowCopy: false,
            allowDelete: false,
            allowMove: false,
            initialContentAlignment: go.Spot.Center,
            initialAutoScale: go.Diagram.Uniform,
            layout:
              $(FlatTreeLayout,  // custom Layout, defined below
                { angle: 90,
                  compaction: go.TreeLayout.CompactionNone }),
            "undoManager.isEnabled": true
          });

      myDiagram.nodeTemplate =
        $(go.Node, "Vertical",
          { selectionObjectName: "BODY" },
          $(go.Panel, "Auto", { name: "BODY" },
            $(go.Shape, "RoundedRectangle",
              new go.Binding("fill"),
              new go.Binding("stroke")),
            $(go.TextBlock,
              { font: "bold 12pt Arial, sans-serif", margin: new go.Margin(4, 2, 2, 2) },
              new go.Binding("text"))
          ),
          $(go.Panel,  // this is underneath the "BODY"
            { height: 15 },  // always this height, even if the TreeExpanderButton is not visible
            $("TreeExpanderButton")
          )
        );

      myDiagram.linkTemplate =
        $(go.Link,
          $(go.Shape, { strokeWidth: 1.5 }));

      // set up the nodeDataArray, describing each part of the sentence
      var nodeDataArray = [
        { key: 1, text: "Sentence", fill: "#f68c06", stroke: "#4d90fe" },
        { key: 2, text: "NP", fill: "#f68c06", stroke: "#4d90fe", parent: 1 },
        { key: 3, text: "DT", fill: "#ccc", stroke: "#4d90fe", parent: 2 },
        { key: 4, text: "A", fill: "#f8f8f8", stroke: "#4d90fe", parent: 3 },
        { key: 5, text: "JJ", fill: "#ccc", stroke: "#4d90fe", parent: 2 },
        { key: 6, text: "rare", fill: "#f8f8f8", stroke: "#4d90fe", parent: 5 },
        { key: 7, text: "JJ", fill: "#ccc", stroke: "#4d90fe", parent: 2 },
        { key: 8, text: "black", fill: "#f8f8f8", stroke: "#4d90fe", parent: 7 },
        { key: 9, text: "NN", fill: "#ccc", stroke: "#4d90fe", parent: 2 },
        { key: 10, text: "squirrel", fill: "#f8f8f8", stroke: "#4d90fe", parent: 9 },
        { key: 11, text: "VP", fill: "#f68c06", stroke: "#4d90fe", parent: 1 },
        { key: 12, text: "VBZ", fill: "#ccc", stroke: "#4d90fe", parent: 11 },
        { key: 13, text: "has", fill: "#f8f8f8", stroke: "#4d90fe", parent: 12 },
        { key: 14, text: "VP", fill: "#f68c06", stroke: "#4d90fe", parent: 11 },
        { key: 15, text: "VBN", fill: "#ccc", stroke: "#4d90fe", parent: 14 },
        { key: 16, text: "become", fill: "#f8f8f8", stroke: "#4d90fe", parent: 15 },
        { key: 17, text: "NP", fill: "#f68c06", stroke: "#4d90fe", parent: 14 },
        { key: 18, text: "NP", fill: "#f68c06", stroke: "#4d90fe", parent: 17 },
        { key: 19, text: "DT", fill: "#ccc", stroke: "#4d90fe", parent: 18 },
        { key: 20, text: "a", fill: "#f8f8f8", stroke: "#4d90fe", parent: 19 },
        { key: 21, text: "JJ", fill: "#ccc", stroke: "#4d90fe", parent: 18 },
        { key: 22, text: "regular", fill: "#f8f8f8", stroke: "#4d90fe", parent: 21 },
        { key: 23, text: "NN", fill: "#ccc", stroke: "#4d90fe", parent: 18 },
        { key: 24, text: "visitor", fill: "#f8f8f8", stroke: "#4d90fe", parent: 23 },
        { key: 25, text: "PP", fill: "#f68c06", stroke: "#4d90fe", parent: 17 },
        { key: 26, text: "TO", fill: "#ccc", stroke: "#4d90fe", parent: 25 },
        { key: 27, text: "to", fill: "#f8f8f8", stroke: "#4d90fe", parent: 26 },
        { key: 28, text: "NP", fill: "#f68c06", stroke: "#4d90fe", parent: 25 },
        { key: 29, text: "DT", fill: "#ccc", stroke: "#4d90fe", parent: 28 },
        { key: 30, text: "a", fill: "#f8f8f8", stroke: "#4d90fe", parent: 29 },
        { key: 31, text: "JJ", fill: "#ccc", stroke: "#4d90fe", parent: 28 },
        { key: 32, text: "suburban", fill: "#f8f8f8", stroke: "#4d90fe", parent: 31 },
        { key: 33, text: "NN", fill: "#ccc", stroke: "#4d90fe", parent: 28 },
        { key: 34, text: "garden", fill: "#f8f8f8", stroke: "#4d90fe", parent: 33 },
        { key: 35, text: ".", fill: "#ccc", stroke: "#4d90fe", parent: 1 },
        { key: 36, text: ".", fill: "#f8f8f8", stroke: "#4d90fe", parent: 35 }
      ]

      // create the Model with data for the tree, and assign to the Diagram
      myDiagram.model =
        $(go.TreeModel,
          { nodeDataArray: nodeDataArray });
    }

    // Customize the TreeLayout to position all of the leaf nodes at the same vertical Y position.
    function FlatTreeLayout() {
      go.TreeLayout.call(this);  // call base constructor
    }
    go.Diagram.inherit(FlatTreeLayout, go.TreeLayout);

    // This assumes the TreeLayout.angle is 90 -- growing downward
    /** @override */
    FlatTreeLayout.prototype.commitLayout = function() {
      go.TreeLayout.prototype.commitLayout.call(this);  // call base method first
      // find maximum Y position of all Nodes
      var y = -Infinity;
      this.network.vertexes.each(function(v) {
          y = Math.max(y, v.node.position.y);
        });
      // move down all leaf nodes to that Y position, but keeping their X position
      this.network.vertexes.each(function(v) {
          var node = v.node;
          if (node.isTreeLeaf) {
            node.position = new go.Point(node.position.x, y);
          }
        });
    };
    // end FlatTreeLayout
  </script>
</head>
<body onload="init()">
<div id="sample">
  <h3>GoJS Parse Tree</h3>
  <div id="myDiagramDiv" style="border: solid 1px black; width:100%; height:500px"></div>
  <p>A <em>parse tree</em> is an ordered, rooted tree representing the structure of a sentence, broken down to parts-of-speech.</p>
  <p>
    This diagram uses a custom <a>TreeLayout</a> called <b>FlatTreeLayout</b> that places all leaf nodes at the same Y position.
    It also makes use of a <b>TreeExpanderButton</b> on the node template. See the <a href="../intro/buttons.html">Intro page on Buttons</a> for more GoJS button information.
  </p>
  <p>
    The abbreviations used in this diagram are:
    <ul>
      <li><b>NP</b>, a noun phrase</li>
      <li><b>VP</b>, a verb phrase</li>
      <li><b>PP</b>, a prepositional phrase</li>
      <li><b>DT</b>, a determiner</li>
      <li><b>JJ</b>, an adjective</li>
      <li><b>NN</b>, a common noun</li>
      <li><b>VBZ</b>, a third person singular present verb</li>
      <li><b>VBN</b>, a past participle verb</li>
    </ul>
  </p>
</div>
</body>
</html>

and this the code i got when trying to use it react

import React, {Component} from 'react';
import go from 'gojs';
const goObj = go.GraphObject.make;

export default class GoJs extends Component {
  constructor (props) {
    super (props);

    this.renderCanvas = this.renderCanvas.bind (this);

    this.state = {myModel: null, myDiagram: null}
  }

  renderCanvas () {
    let model = goObj (go.TreeModel);
    let diagram = goObj (go.Diagram, this.refs.goJsDiv, {initialContentAlignment: go.Spot.Center});
    this.setState({myModel: model, myDiagram: diagram},
      () => {
        model.nodeDataArray = this.props.data;
        diagram.model = model;
        this.setState({myModel: model, myDiagram: diagram});
      }
    );
  }

  componentDidMount () {
    this.renderCanvas ();
  }

  componentWillUpdate (prevProps) {
    if (this.props.data !== prevProps.data) {
      console.log ('Updating');
      const model = this.state.myModel;
      const diagram = this.state.myDiagram;
      model.nodeDataArray = this.props.data;
      diagram.model = model;
      this.setState({myModel: model, myDiagram: diagram});
    }
  }

  render () {
    return <div ref="goJsDiv" style={{'width': '500px', 'height': '500px', 'backgroundColor': '#DAE4E4'}}></div>;
  }
}

GoJs.propTypes = { data: React.PropTypes.string.isRequired };
GoJs.defaultProps = { data: '[]' };

im unable to figure out whats missing and the out put i get from this is a total mess.


Solution

  • After spending hours of changing code here and there i managed to make what was required heres my final code

    import React, {Component} from 'react';
    import go from 'gojs';
    const goObj = go.GraphObject.make;
    
    export default class GoJs extends Component {
      constructor (props) {
        super (props);
    
        this.renderCanvas = this.renderCanvas.bind (this);
    
        this.state = {myModel: null, myDiagram: null}
      }
    
      renderCanvas () {
    
      function FlatTreeLayout () {
         go.TreeLayout.call(this);  // call base constructor
       }
       go.Diagram.inherit(FlatTreeLayout, go.TreeLayout);
    
       // This assumes the TreeLayout.angle is 90 -- growing downward
       /** @override */
       FlatTreeLayout.prototype.commitLayout = function () {
         go.TreeLayout.prototype.commitLayout.call(this);  // call base method first
         // find maximum Y position of all Nodes
         var y = -Infinity;
         this.network.vertexes.each(function(v) {
             y = Math.max(y, v.node.position.y);
           });
         // move down all leaf nodes to that Y position, but keeping their X position
         this.network.vertexes.each(function(v) {
             var node = v.node;
             if (node.isTreeLeaf) {
               node.position = new go.Point(node.position.x, y);
             }
           });
       };
    
        let model = goObj (go.TreeModel);
        let diagram = goObj (go.Diagram, this.refs.goJsDiv,          {
                   allowCopy: false,
                   allowDelete: false,
                   allowMove: false,
                   initialContentAlignment: go.Spot.Center,
                   initialAutoScale: go.Diagram.Uniform,
                   layout:
                     goObj(FlatTreeLayout,  // custom Layout, defined below
                       { angle: 90,
                         compaction: go.TreeLayout.CompactionNone }),
                   "undoManager.isEnabled": true
                 });
    
                 diagram.nodeTemplate = goObj(go.Node, "Vertical",
                          { selectionObjectName: "BODY" },
                          goObj(go.Panel, "Auto", { name: "BODY" },
                            goObj(go.Shape, "RoundedRectangle",
                              new go.Binding("fill"),
                              new go.Binding("stroke")),
                            goObj(go.TextBlock,
                              { font: "bold 12pt Arial, sans-serif", margin: new go.Margin(4, 2, 2, 2) },
                              new go.Binding("text"))
                          ),
                          goObj(go.Panel,  // this is underneath the "BODY"
                            { height: 15 },  // always this height, even if the TreeExpanderButton is not visible
                            goObj("TreeExpanderButton")
                          )
                        );
    
                 diagram.linkTemplate = goObj(go.Link,goObj(go.Shape, { strokeWidth: 1.5 }));
    
        this.setState({myModel: model, myDiagram: diagram},
          () => {
            model.nodeDataArray = this.props.data;
            diagram.model = model;
            this.setState({myModel: model, myDiagram: diagram});
          }
        );
    
      }
    
    
    
      componentDidMount () {
        this.renderCanvas ();
      }
    
      componentWillUpdate (prevProps) {
        if (this.props.data !== prevProps.data) {
          console.log ('Updating');
          const model = this.state.myModel;
          const diagram = this.state.myDiagram;
          model.nodeDataArray = this.props.data;
          diagram.model = model;
          this.setState({myModel: model, myDiagram: diagram});
        }
      }
    
      render () {
        return <div ref="goJsDiv" style={{'width': '500px', 'height': '500px', 'backgroundColor': '#DAE4E4'}}></div>;
      }
    }
    
    GoJs.propTypes = { data: React.PropTypes.string.isRequired };
    GoJs.defaultProps = { data: '[]' };
    

    Since its a dumb(stateless) component we have to pass data from the parent component via props.

    from parent component

       render(){
         return(
           <div>
             <PTagBox data={nodeDataArray}/>
           </div>
         );
       }
    

    where PTagBox is the dumb or child component