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mxgraphのセルに接続されていないエッジを検証する方法

こんにちは私はvalidationの問題に直面しています未接続edges _mxgraphのセルへ

以下の画像は私の期待を示します:

enter image description here

質問:検証ボタンを押すたび未接続edgescellshighlighted赤である必要があります。

フルビューのCodepenの場合:https://codepen.io/eabangalore/pen/pmELpL?editors=11

注:CODEPENリンクをご覧ください( https://codepen.io/eabangalore/pen/pmELpL?editors=11 )以下のコードIS機能しません

完全なコード:

<!--
  Copyright (c) 2006-2013, JGraph Ltd
  
  Dynamic toolbar example for mxGraph. This example demonstrates changing the
  state of the toolbar at runtime.
-->
<html>
<head>
        <title>Toolbar example for mxGraph</title>

        <!-- Sets the basepath for the library if not in same directory -->
  <script type="text/javascript">
    mxBasePath = 'https://jgraph.github.io/mxgraph/javascript/src';
    
    function setGraphData(){
      var graphState ={"tagName":"mxGraphModel","children":[{"tagName":"root","children":[{"tagName":"mxCell","attributes":{"id":"0"}},{"tagName":"mxCell","attributes":{"id":"1","parent":"0"}},{"tagName":"mxCell","attributes":{"id":"2","value":"A","style":"","parent":"1","vertex":"1"},"children":[{"tagName":"mxGeometry","attributes":{"x":"271.56251525878906","y":"82.44792175292969","width":"100","height":"40","as":"geometry"}}]},{"tagName":"mxCell","attributes":{"id":"3","value":"B","style":"","parent":"1","vertex":"1"},"children":[{"tagName":"mxGeometry","attributes":{"x":"678.2291717529297","y":"106.89236450195312","width":"100","height":"40","as":"geometry"}}]},{"tagName":"mxCell","attributes":{"id":"4","value":"Bangalore","parent":"1","Edge":"1"},"children":[{"tagName":"mxGeometry","attributes":{"x":"0.0511","y":"-20","relative":"1","as":"geometry"},"children":[{"tagName":"mxPoint","attributes":{"x":"370.06251525878906","y":"109.95338610053051","as":"sourcePoint"}},{"tagName":"mxPoint","attributes":{"x":"676.7291717529297","y":"128.3869001543523","as":"targetPoint"}},{"tagName":"mxPoint","attributes":{"as":"offset"}}]}]},{"tagName":"mxCell","attributes":{"id":"5","value":"C","style":"","parent":"1","vertex":"1"},"children":[{"tagName":"mxGeometry","attributes":{"x":"1013.7847747802734","y":"83.55902862548828","width":"100","height":"40","as":"geometry"}}]},{"tagName":"mxCell","attributes":{"id":"6","parent":"1","source":"3","target":"5","Edge":"1"},"children":[{"tagName":"mxGeometry","attributes":{"relative":"1","as":"geometry"}}]},{"tagName":"mxCell","attributes":{"id":"7","value":"Not Connected","style":"","vertex":"1","parent":"1"},"children":[{"tagName":"mxGeometry","attributes":{"x":"552","y":"267.640625","width":"100","height":"40","as":"geometry"}}]},{"tagName":"mxCell","attributes":{"id":"8","value":"Edge Not connected must highlight in red color","Edge":"1","parent":"1","source":"5"},"children":[{"tagName":"mxGeometry","attributes":{"relative":"1","as":"geometry"},"children":[{"tagName":"mxPoint","attributes":{"x":"740","y":"260","as":"targetPoint"}}]}]}]}]};
      
      localStorage.setItem('graphState',JSON.stringify(graphState));
    }
    
        function html2json(html){
                if(html.nodeType==3){
                        return {
                                "tagName":"#text",
                                "content":html.textContent
                        }
                }
                var element = {
                        "tagName":html.tagName
                };

                if(html.getAttributeNames().length>0){
                        element.attributes = html.getAttributeNames().reduce(
                                function(acc,at){acc[at]=html.getAttribute(at); return acc;},
                                {}
                        );
                }

                if(html.childNodes.length>0){
                        element.children = Array.from(html.childNodes)
                                .filter(
                                        function(el){
                                                return el.nodeType!=3
                                                ||el.textContent.trim().length>0
                                        })
                                .map(function(el){return html2json(el);});
                }
                return element;
        }

        function json2html(json){
                var xmlDoc = document.implementation.createDocument(null, json.tagName);

                var addAttributes = function(jsonNode, node){
                        if(jsonNode.attributes){
                                Object.keys(jsonNode.attributes).map(
                                        function(name){
                                                node.setAttribute(name,jsonNode.attributes[name]);
                                        }
                                );
                        }
                }

                var addChildren = function(jsonNode,node){
                        if(jsonNode.children){
                                jsonNode.children.map(
                                        function(jsonChildNode){
                                                json2htmlNode(jsonChildNode,node);
                                        }
                                );
                        }
                }

                var json2htmlNode = function(jsonNode,parent){
                        if(jsonNode.tagName=="#text"){
                                return xmlDoc.createTextNode(jsonNode.content);
                        }

                        var node = xmlDoc.createElement(jsonNode.tagName);

                        addAttributes(jsonNode,node);
                        addChildren(jsonNode,node);

                        parent.appendChild(node);
                }

                addAttributes(json,xmlDoc.firstElementChild);
                addChildren(json,xmlDoc.firstElementChild);

                return xmlDoc;
        }
  </script>

  <!-- Loads and initializes the library -->
  <script type="text/javascript" src="https://jgraph.github.io/mxgraph/javascript/src/js/mxClient.js"></script>

        <!-- Example code -->
        <script type="text/javascript">
                // Program starts here. Creates a sample graph in the
                // DOM node with the specified ID. This function is invoked
                // from the onLoad event handler of the document (see below).
                function main()
                {
      setGraphData();
                        // Checks if 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
                        {
                                // Defines an icon for creating new connections in the connection handler.
                                // This will automatically disable the highlighting of the source vertex.
                                mxConnectionHandler.prototype.connectImage = new mxImage('images/connector.gif', 16, 16);

                                // Creates the div for the toolbar
                                var tbContainer = document.createElement('div');
                                tbContainer.style.position = 'absolute';
                                tbContainer.style.overflow = 'hidden';
                                tbContainer.style.padding = '2px';
                                tbContainer.style.left = '0px';
                                tbContainer.style.top = '0px';
                                tbContainer.style.width = '24px';
                                tbContainer.style.bottom = '0px';
                                
                                document.body.appendChild(tbContainer);
                        
                                // Creates new toolbar without event processing
                                var toolbar = new mxToolbar(tbContainer);
                                toolbar.enabled = false
                                
                                // Creates the div for the graph
                                var container = document.createElement('div');
                                container.style.position = 'absolute';
                                container.style.overflow = 'hidden';
                                container.style.left = '24px';
                                container.style.top = '0px';
                                container.style.right = '0px';
                                container.style.bottom = '0px';
                                container.style.background = 'url("editors/images/grid.gif")';

                                document.body.appendChild(container);
                                
                                // Workaround for Internet Explorer ignoring certain styles
                                if (mxClient.IS_QUIRKS)
                                {
                                        document.body.style.overflow = 'hidden';
                                        new mxDivResizer(tbContainer);
                                        new mxDivResizer(container);
                                }
        
                                // Creates the model and the graph inside the container
                                // using the fastest rendering available on the browser
                                var model = new mxGraphModel();
                                var graph = new mxGraph(container, model);

                                // Enables new connections in the graph
                                graph.setConnectable(true);
                                graph.setMultigraph(false);

                                // Stops editing on enter or escape keypress
                                var keyHandler = new mxKeyHandler(graph);
                                var rubberband = new mxRubberband(graph);
                                
                                var addVertex = function(icon, w, h, style)
                                {
                                        var vertex = new mxCell(null, new mxGeometry(0, 0, w, h), style);
                                        vertex.setVertex(true);
                                
                                        var img = addToolbarItem(graph, toolbar, vertex, icon);
                                        img.enabled = true;
                                        
                                        graph.getSelectionModel().addListener(mxEvent.CHANGE, function()
                                        {
                                                var tmp = graph.isSelectionEmpty();
                                                mxUtils.setOpacity(img, (tmp) ? 100 : 20);
                                                img.enabled = tmp;
                                        });
                                };
                                
                                addVertex('https://jgraph.github.io/mxgraph/javascript/examples/editors/images/rectangle.gif', 100, 40, '');
                                addVertex('https://jgraph.github.io/mxgraph/javascript/examples/editors/images/rounded.gif', 100, 40, 'shape=rounded');
                                addVertex('https://jgraph.github.io/mxgraph/javascript/examples/editors/images/ellipse.gif', 40, 40, 'shape=ellipse');
                                addVertex('https://jgraph.github.io/mxgraph/javascript/examples/editors/images/rhombus.gif', 40, 40, 'shape=rhombus');
                                addVertex('https://jgraph.github.io/mxgraph/javascript/examples/editors/images/triangle.gif', 40, 40, 'shape=triangle');
                                addVertex('https://jgraph.github.io/mxgraph/javascript/examples/editors/images/cylinder.gif', 40, 40, 'shape=cylinder');
                                addVertex('https://jgraph.github.io/mxgraph/javascript/examples/editors/images/actor.gif', 30, 40, 'shape=actor');
        
        
                                // read state on load 
                                if(window.localStorage.graphState){     
                                        var doc = json2html(JSON.parse(localStorage.graphState));       
                                        var dec = new mxCodec(doc);
                                        dec.decode(doc.documentElement, graph.getModel());
                                }

                                // save state on change
                                graph.getModel().addListener('change',function(){
                                                var codec = new mxCodec();              
                                                window.localStorage.graphState = JSON.stringify(html2json(codec.encode(
                                                        graph.getModel()
                                                )));
                                });
                        }
                }

                function addToolbarItem(graph, toolbar, prototype, image)
                {
                        // Function that is executed when the image is dropped on
                        // the graph. The cell argument points to the cell under
                        // the mousepointer if there is one.
                        var funct = function(graph, evt, cell, x, y)
                        {
                                graph.stopEditing(false);

                                var vertex = graph.getModel().cloneCell(prototype);
                                vertex.geometry.x = x;
                                vertex.geometry.y = y;
                                        
                                graph.addCell(vertex);
                                graph.setSelectionCell(vertex);
                        }
                        
                        // Creates the image which is used as the drag icon (preview)
                        var img = toolbar.addMode(null, image, function(evt, cell)
                        {
                                var pt = this.graph.getPointForEvent(evt);
                                funct(graph, evt, cell, pt.x, pt.y);
                        });
                        
                        // Disables dragging if element is disabled. This is a workaround
                        // for wrong event order in IE. Following is a dummy listener that
                        // is invoked as the last listener in IE.
                        mxEvent.addListener(img, 'mousedown', function(evt)
                        {
                                // do nothing
                        });
                        
                        // This listener is always called first before any other listener
                        // in all browsers.
                        mxEvent.addListener(img, 'mousedown', function(evt)
                        {
                                if (img.enabled == false)
                                {
                                        mxEvent.consume(evt);
                                }
                        });
                                                
                        mxUtils.makeDraggable(img, graph, funct);
                        
                        return img;
                }

        </script>
</head>

<!-- Calls the main function after the page has loaded. Container is dynamically created. -->
<body onload="main();" >
</body>
</html>

よろしくお願いします!!!

18
user6783030

編集:コメントに従って、親セルまたはそのブランチに接続されていないセルを検証するために、接続された各Edgeが親セルから始まるなどをチェックする再帰関数を使用できます。

文字数の制限により、元のコードスニペットは削除されています。

_.not_connected * {
  color: red;
  font-color: red;
  stroke: red;
  stroke-color: red;
}_
_<!--
  Copyright (c) 2006-2013, JGraph Ltd
  
  Dynamic toolbar example for mxGraph. This example demonstrates changing the
  state of the toolbar at runtime.
-->
<html>

<head>
  <title>Toolbar example for mxGraph</title>

</head>

<!-- Calls the main function after the page has loaded. Container is dynamically created. -->

<body onload="main();">
  <button style="position:absolute; left:300px;padding:8px 40px;background:orangered;color:#fff;outline:none;border:none;z-index:100;" id="validate_btn">Validate</button>
</body>

</html>

<!-- Sets the basepath for the library if not in same directory -->
<script type="text/javascript">
  mxBasePath = 'https://jgraph.github.io/mxgraph/javascript/src';
  var graphStateJSON;
  var graph;

  function setGraphData() {
    var graphState = {
      "tagName": "mxGraphModel",
      "children": [{
        "tagName": "root",
        "children": [{
          "tagName": "mxCell",
          "attributes": {
            "id": "0"
          }
        }, {
          "tagName": "mxCell",
          "attributes": {
            "id": "1",
            "parent": "0"
          }
        }, {
          "tagName": "mxCell",
          "attributes": {
            "id": "2",
            "value": "A",
            "style": "",
            "vertex": "1",
            "parent": "1"
          },
          "children": [{
            "tagName": "mxGeometry",
            "attributes": {
              "x": "460",
              "y": "80",
              "width": "100",
              "height": "40",
              "as": "geometry"
            }
          }]
        }, {
          "tagName": "mxCell",
          "attributes": {
            "id": "3",
            "value": "C",
            "style": "",
            "vertex": "1",
            "parent": "1"
          },
          "children": [{
            "tagName": "mxGeometry",
            "attributes": {
              "x": "460",
              "y": "190",
              "width": "100",
              "height": "40",
              "as": "geometry"
            }
          }]
        }, {
          "tagName": "mxCell",
          "attributes": {
            "id": "4",
            "Edge": "1",
            "parent": "1",
            "source": "2",
            "target": "3"
          },
          "children": [{
            "tagName": "mxGeometry",
            "attributes": {
              "relative": "1",
              "as": "geometry"
            }
          }]
        }, {
          "tagName": "mxCell",
          "attributes": {
            "id": "5",
            "value": "B",
            "style": "",
            "vertex": "1",
            "parent": "1"
          },
          "children": [{
            "tagName": "mxGeometry",
            "attributes": {
              "x": "280",
              "y": "190",
              "width": "100",
              "height": "40",
              "as": "geometry"
            }
          }]
        }, {
          "tagName": "mxCell",
          "attributes": {
            "id": "6",
            "value": "D",
            "style": "",
            "vertex": "1",
            "parent": "1"
          },
          "children": [{
            "tagName": "mxGeometry",
            "attributes": {
              "x": "663",
              "y": "193",
              "width": "100",
              "height": "40",
              "as": "geometry"
            }
          }]
        }, {
          "tagName": "mxCell",
          "attributes": {
            "id": "7",
            "Edge": "1",
            "parent": "1",
            "source": "2",
            "target": "5"
          },
          "children": [{
            "tagName": "mxGeometry",
            "attributes": {
              "relative": "1",
              "as": "geometry"
            }
          }]
        }, {
          "tagName": "mxCell",
          "attributes": {
            "id": "8",
            "Edge": "1",
            "parent": "1",
            "source": "2",
            "target": "6"
          },
          "children": [{
            "tagName": "mxGeometry",
            "attributes": {
              "relative": "1",
              "as": "geometry"
            }
          }]
        }, {
          "tagName": "mxCell",
          "attributes": {
            "id": "9",
            "value": "E",
            "style": "",
            "vertex": "1",
            "parent": "1"
          },
          "children": [{
            "tagName": "mxGeometry",
            "attributes": {
              "x": "660",
              "y": "260",
              "width": "100",
              "height": "40",
              "as": "geometry"
            }
          }]
        }, {
          "tagName": "mxCell",
          "attributes": {
            "id": "10",
            "Edge": "1",
            "parent": "1",
            "source": "6",
            "target": "9"
          },
          "children": [{
            "tagName": "mxGeometry",
            "attributes": {
              "relative": "1",
              "as": "geometry"
            }
          }]
        }, {
          "tagName": "mxCell",
          "attributes": {
            "id": "11",
            "value": "F",
            "style": "",
            "vertex": "1",
            "parent": "1"
          },
          "children": [{
            "tagName": "mxGeometry",
            "attributes": {
              "x": "280",
              "y": "260",
              "width": "100",
              "height": "40",
              "as": "geometry"
            }
          }]
        }, {
          "tagName": "mxCell",
          "attributes": {
            "id": "12",
            "value": "G",
            "style": "",
            "vertex": "1",
            "parent": "1"
          },
          "children": [{
            "tagName": "mxGeometry",
            "attributes": {
              "x": "459",
              "y": "257",
              "width": "100",
              "height": "40",
              "as": "geometry"
            }
          }]
        }, {
          "tagName": "mxCell",
          "attributes": {
            "id": "13",
            "Edge": "1",
            "parent": "1",
            "source": "11",
            "target": "12"
          },
          "children": [{
            "tagName": "mxGeometry",
            "attributes": {
              "relative": "1",
              "as": "geometry"
            }
          }]
        }]
      }]
    };
    graphStateJSON = JSON.stringify(graphState);
  }

  function html2json(html) {
    if (html.nodeType == 3) {
      return {
        "tagName": "#text",
        "content": html.textContent
      }
    }
    var element = {
      "tagName": html.tagName
    };
    if (html.getAttributeNames().length > 0) {
      element.attributes = html.getAttributeNames().reduce(
        function(acc, at) {
          acc[at] = html.getAttribute(at);
          return acc;
        }, {}
      );
    }
    if (html.childNodes.length > 0) {
      element.children = Array.from(html.childNodes)
        .filter(
          function(el) {
            return el.nodeType != 3 ||
              el.textContent.trim().length > 0
          })
        .map(function(el) {
          return html2json(el);
        });
    }
    return element;
  }

  function json2html(json) {
    var xmlDoc = document.implementation.createDocument(null, json.tagName);
    var addAttributes = function(jsonNode, node) {
      if (jsonNode.attributes) {
        Object.keys(jsonNode.attributes).map(
          function(name) {
            node.setAttribute(name, jsonNode.attributes[name]);
          }
        );
      }
    }
    var addChildren = function(jsonNode, node) {
      if (jsonNode.children) {
        jsonNode.children.map(
          function(jsonChildNode) {
            json2htmlNode(jsonChildNode, node);
          }
        );
      }
    }
    var json2htmlNode = function(jsonNode, parent) {
      if (jsonNode.tagName == "#text") {
        return xmlDoc.createTextNode(jsonNode.content);
      }
      var node = xmlDoc.createElement(jsonNode.tagName);
      addAttributes(jsonNode, node);
      addChildren(jsonNode, node);
      parent.appendChild(node);
    }
    addAttributes(json, xmlDoc.firstElementChild);
    addChildren(json, xmlDoc.firstElementChild);
    return xmlDoc;
  }
</script>

<!-- Loads and initializes the library -->
<script type="text/javascript" src="https://jgraph.github.io/mxgraph/javascript/src/js/mxClient.js"></script>

<!-- Example code -->
<script type="text/javascript">
  // Program starts here. Creates a sample graph in the
  // DOM node with the specified ID. This function is invoked
  // from the onLoad event handler of the document (see below).
  var graph;
  var graphView;
  var notConnectedCells = [];
  var parentCellId = "2";

  function main() {
    setGraphData();
    // Checks if 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 {
      // Defines an icon for creating new connections in the connection handler.
      // This will automatically disable the highlighting of the source vertex.
      mxConnectionHandler.prototype.connectImage = new mxImage('images/connector.gif', 16, 16);
      // Creates the div for the toolbar
      var tbContainer = document.createElement('div');
      tbContainer.style.position = 'absolute';
      tbContainer.style.overflow = 'hidden';
      tbContainer.style.padding = '2px';
      tbContainer.style.left = '0px';
      tbContainer.style.top = '0px';
      tbContainer.style.width = '24px';
      tbContainer.style.bottom = '0px';
      document.body.appendChild(tbContainer);
      // Creates new toolbar without event processing
      var toolbar = new mxToolbar(tbContainer);
      toolbar.enabled = false
      // Creates the div for the graph
      var container = document.createElement('div');
      container.style.position = 'absolute';
      container.style.overflow = 'hidden';
      container.style.left = '24px';
      container.style.top = '0px';
      container.style.right = '0px';
      container.style.bottom = '0px';
      container.style.background = 'url("editors/images/grid.gif")';
      document.body.appendChild(container);
      // Workaround for Internet Explorer ignoring certain styles
      if (mxClient.IS_QUIRKS) {
        document.body.style.overflow = 'hidden';
        new mxDivResizer(tbContainer);
        new mxDivResizer(container);
      }
      // Creates the model and the graph inside the container
      // using the fastest rendering available on the browser
      var model = new mxGraphModel();
      graph = new mxGraph(container, model);
      // Enables new connections in the graph
      graph.setConnectable(true);
      graph.setMultigraph(false);
      // Stops editing on enter or escape keypress
      var keyHandler = new mxKeyHandler(graph);
      var rubberband = new mxRubberband(graph);
      var addVertex = function(icon, w, h, style) {
        var vertex = new mxCell(null, new mxGeometry(0, 0, w, h), style);
        vertex.setVertex(true);
        var img = addToolbarItem(graph, toolbar, vertex, icon);
        img.enabled = true;
        graph.getSelectionModel().addListener(mxEvent.CHANGE, function() {
          var tmp = graph.isSelectionEmpty();
          mxUtils.setOpacity(img, (tmp) ? 100 : 20);
          img.enabled = tmp;
        });
      };
      addVertex('https://jgraph.github.io/mxgraph/javascript/examples/editors/images/rectangle.gif', 100, 40, '');
      addVertex('https://jgraph.github.io/mxgraph/javascript/examples/editors/images/rounded.gif', 100, 40, 'shape=rounded');
      addVertex('https://jgraph.github.io/mxgraph/javascript/examples/editors/images/ellipse.gif', 40, 40, 'shape=ellipse');
      addVertex('https://jgraph.github.io/mxgraph/javascript/examples/editors/images/rhombus.gif', 40, 40, 'shape=rhombus');
      addVertex('https://jgraph.github.io/mxgraph/javascript/examples/editors/images/triangle.gif', 40, 40, 'shape=triangle');
      addVertex('https://jgraph.github.io/mxgraph/javascript/examples/editors/images/cylinder.gif', 40, 40, 'shape=cylinder');
      addVertex('https://jgraph.github.io/mxgraph/javascript/examples/editors/images/actor.gif', 30, 40, 'shape=actor');
      // read state on load 
      if (graphStateJSON) {
        var doc = json2html(JSON.parse(graphStateJSON));
        var dec = new mxCodec(doc);
        dec.decode(doc.documentElement, graph.getModel());
      }
      // save state on change
      graph.getModel().addListener('change', function() {
        var codec = new mxCodec();
        graphStateJSON = JSON.stringify(html2json(codec.encode(
          graph.getModel()
        )));
      });
    }
  }

  function addToolbarItem(graph, toolbar, prototype, image) {
    // Function that is executed when the image is dropped on
    // the graph. The cell argument points to the cell under
    // the mousepointer if there is one.
    var funct = function(graph, evt, cell, x, y) {
      graph.stopEditing(false);
      var vertex = graph.getModel().cloneCell(prototype);
      vertex.geometry.x = x;
      vertex.geometry.y = y;
      graph.addCell(vertex);
      graph.setSelectionCell(vertex);
    }
    // Creates the image which is used as the drag icon (preview)
    var img = toolbar.addMode(null, image, function(evt, cell) {
      var pt = this.graph.getPointForEvent(evt);
      funct(graph, evt, cell, pt.x, pt.y);
    });
    // Disables dragging if element is disabled. This is a workaround
    // for wrong event order in IE. Following is a dummy listener that
    // is invoked as the last listener in IE.
    mxEvent.addListener(img, 'mousedown', function(evt) {
      // do nothing
    });
    // This listener is always called first before any other listener
    // in all browsers.
    mxEvent.addListener(img, 'mousedown', function(evt) {
      if (img.enabled == false) {
        mxEvent.consume(evt);
      }
    });
    mxUtils.makeDraggable(img, graph, funct);
    return img;
  }

  function Validate(mxCell){
        let isConnected = true;
        // check each cell that each Edge connected to
        for(let i=0;i<mxCell.getEdgeCount();i++){
            let Edge = mxCell.getEdgeAt(i);

            if(Edge.target === null) continue; // no target
            if(mxCell.getId() === Edge.target.getId()) continue; // target is mxCell itself
            
            isConnected = Edge.source !== null && Edge.target !== null;
            if(isConnected){
                // remove source cell if found and so on
                let sourceIndex = notConnectedCells.findIndex(c=>c.id === Edge.source.getId());
                if(sourceIndex !== -1) notConnectedCells.splice(sourceIndex,1);

                let targetIndex = notConnectedCells.findIndex(c=>c.id === Edge.target.getId());
                if(targetIndex !== -1) notConnectedCells.splice(targetIndex,1);

                let edgeIndex = notConnectedCells.findIndex(c=>c.id === Edge.getId());
                if(edgeIndex !== -1) notConnectedCells.splice(edgeIndex,1);

                // check next cell and its edges
                Validate(Edge.target);
            }
        }
    }

    function ResetColor(state){
        state.shape.node.classList.remove("not_connected");
        if(state.text)
            state.text.node.classList.remove("not_connected");
    }

    function SetNotConnectedColor(state){
        for(let i=0;i<notConnectedCells.length;i++){
            let mxCell = notConnectedCells[i];
            let state = graphView.getState(mxCell);
            state.shape.node.classList.add("not_connected");
            if(state.text)
                state.text.node.classList.add("not_connected");
        }
    }

    document.querySelector("#validate_btn").addEventListener("click", function() {
        
        let cells = graph.getModel().cells;
        graphView = graph.getView();
        notConnectedCells.length = 0;

        // create an array of cells and reset the color
        for(let key in cells){
            if(!cells.hasOwnProperty(key)) continue;

            let mxCell = cells[key];
            if(!mxCell.isVertex() && !mxCell.isEdge()) continue;
            notConnectedCells.Push(mxCell);
            let state = graphView.getState(mxCell);
            ResetColor(state);
        }
        
        // starts with the parent cell
        let parentCell = notConnectedCells.find(c=>c.id === parentCellId);
        Validate(parentCell);

        SetNotConnectedColor();
    })
</script>_

まず、graphをグローバル変数に設定します。 (var graph = new mxGraph(container, model);

次に、cellsからすべてのgraphView(オブジェクトとして)およびgraphを取得し、すべてのセルを反復処理して、接続されているかどうかを確認します。

_function Validate(){
    let cells = graph.getModel().cells;
    let graphView = graph.getView();

    for(let key in cells){
        if(!cells.hasOwnProperty(key)) continue;

        let mxCell = cells[key];
        if(!mxCell.isVertex() && !mxCell.isEdge()) continue;

        let state = graphView.getState(mxCell);
        ResetColor(state);

        let notConnected = true;
        if(mxCell.isVertex()){
            for(let i=0;i<mxCell.getEdgeCount();i++){
                let Edge = mxCell.getEdgeAt(i);
                // if any of an Edge connected to both source and target, it's connected
                if(Edge.source !== null && Edge.target !== null){
                    notConnected = false;
                    break;
                }
            }
        }
        else { // mxCell.isEdge()
            notConnected = mxCell.source === null || mxCell.target === null;
        }

        if(notConnected) SetNotConnectedColor(state);
    }
}

function ResetColor(state){
    state.shape.node.classList.remove("not_connected");
    if(state.text)
        state.text.node.classList.remove("not_connected");
}

function SetNotConnectedColor(state){
    state.shape.node.classList.add("not_connected");
    if(state.text)
        state.text.node.classList.add("not_connected");
}

document.querySelector("#validate_btn").addEventListener("click", function(){
    Validate();
})
_

必要に応じてlocalStorageバージョンコードをここに示します(codepen)

8
Hikarunomemory