Create controllable custom menu items

<!DOCTYPE html>
<html>

<head>
  <meta charset="utf-8">
  <title>ZingSoft Demo</title>
  <script nonce="undefined" src="https://cdn.zingchart.com/zingchart.min.js"></script>
  <script nonce="undefined">
    zingchart.MODULESDIR = "https://cdn.zingchart.com/modules/";
    ZC.LICENSE = ["b55b025e438fa8a98e32482b5f768ff5"];
  </script>
  <style>
    html,
    body {
      height: 100%;
      width: 100%;
      margin: 0;
      padding: 0;
    }

    #myChart {
      height: 100%;
      width: 100%;
      min-height: 150px;
    }

    .zc-ref {
      display: none;
    }

    .zc-menu-item {
      font-family: "Lucida Sans Unicode" !important;
    }
  </style>
</head>

<body>
  <div id="myChart"><a class="zc-ref" href="https://www.zingchart.com">Powered by ZingChart</a></div>
  <script>
    ZC.LICENSE = ["569d52cefae586f634c54f86dc99e6a9", "b55b025e438fa8a98e32482b5f768ff5"];
    var myConfig = {
      "globals": {
        "fontFamily": "Lucida Sans Unicode"
      },
      "gui": {
        "context-menu": {
          "separator": {
            "line-color": "#ccc"
          },
          "custom-items": [{
            "id": "cm-demo",
            "text": "View demo Info",
            "enabled": "contextMenuCtrl"
          }, ]
        }
      },
      "type": "bar",
      "title": {
        "text": "Average Metric"
      },
      "plotarea": {

      },
      "scaleX": {

      },
      "scaleY": {

      },
      "legend": {},
      "plot": {},
      "series": [{
          "values": [69, 68, 54, 48, 70, 74, 98, 70, 72, 68, 49, 69],
          "text": "Apple"
        },
        {
          "values": [51, 53, 47, 60, 48, 52, 75, 52, 55, 47, 60, 48],
          "text": "Microsoft"
        }
      ]
    };

    window.contextMenuCtrl = function(oInfo, sMenuId) {
      var bEnabled = false;
      if (sMenuId === 'cm-demo' && oInfo.target && oInfo.target === 'node') {
        bEnabled = true;
      }
      return bEnabled;
    }


    zingchart.render({
      id: 'myChart',
      data: myConfig,
      height: '100%',
      width: '100%'
    });
  </script>
</body>

</html>

<!DOCTYPE html>
<html>

<head>
  <meta charset="utf-8">
  <title>ZingSoft Demo</title>
  <script src="https://cdn.zingchart.com/zingchart.min.js"></script>
  <script>
    zingchart.MODULESDIR = "https://cdn.zingchart.com/modules/";
    ZC.LICENSE = ["b55b025e438fa8a98e32482b5f768ff5"];
  </script>
</head>

<body>
  <div id="myChart"><a class="zc-ref" href="https://www.zingchart.com">Powered by ZingChart</a></div>
</body>

</html>

html,
body {
  height: 100%;
  width: 100%;
  margin: 0;
  padding: 0;
}

#myChart {
  height: 100%;
  width: 100%;
  min-height: 150px;
}

.zc-ref {
  display: none;
}

.zc-menu-item {
  font-family: "Lucida Sans Unicode" !important;
}

var myConfig = {
  "globals": {
    "fontFamily": "Lucida Sans Unicode"
  },
  "gui": {
    "context-menu": {
      "separator": {
        "line-color": "#ccc"
      },
      "custom-items": [{
        "id": "cm-demo",
        "text": "View demo Info",
        "enabled": "contextMenuCtrl"
      }, ]
    }
  },
  "type": "bar",
  "title": {
    "text": "Average Metric"
  },
  "plotarea": {

  },
  "scaleX": {

  },
  "scaleY": {

  },
  "legend": {},
  "plot": {},
  "series": [{
      "values": [69, 68, 54, 48, 70, 74, 98, 70, 72, 68, 49, 69],
      "text": "Apple"
    },
    {
      "values": [51, 53, 47, 60, 48, 52, 75, 52, 55, 47, 60, 48],
      "text": "Microsoft"
    }
  ]
};

window.contextMenuCtrl = function(oInfo, sMenuId) {
  var bEnabled = false;
  if (sMenuId === 'cm-demo' && oInfo.target && oInfo.target === 'node') {
    bEnabled = true;
  }
  return bEnabled;
}


zingchart.render({
  id: 'myChart',
  data: myConfig,
  height: '100%',
  width: '100%'
});