Remove Custom Tooltip on mouseout Google Chart

Question

I\'m using a timeline google chart. Based on this question, I\'m trying to add functionality to remove the tooltip ONLY when the mouse moves out of the tooltip. My function belo

Answer 1

I'm thinking you want to listen for 'onmouseout' on the tooltip,
rather than the chart
chart.ttclone.parentNode.addEventListener('mouseout', ...

also -- chart.ttclone.parentNode seems to throw both mouseover & mouseout multiple times

which could cause an error if you try removeChild multiple times

instead, try style.display = 'none', or something similar...

see following working snippet...

google.charts.load('current', {
  callback: function () {
    var container = document.getElementById('timeline');
    var chart = new google.visualization.Timeline(container);
    var dataTable = new google.visualization.DataTable();

    dataTable.addColumn({
      type: 'string',
      id: 'President'
    });
    dataTable.addColumn({ type: 'string', id: 'Name' });
    dataTable.addColumn({ type: 'string', role: 'tooltip', 'p': {'html': true}});
    dataTable.addColumn({
      type: 'date',
      id: 'Start'
    });
    dataTable.addColumn({
      type: 'date',
      id: 'End'
    });
    dataTable.addRows([
      ['Washington', 'test', createToolTip(), new Date(1789, 3, 30), new Date(1797, 2, 4)],
      ['Adams', 'test', createToolTip(), new Date(1797, 2, 4), new Date(1801, 2, 4)],
      ['Jefferson', 'test', createToolTip(), new Date(1801, 2, 4), new Date(1809, 2, 4)]
    ]);
    //select-handler
    google.visualization.events.addListener(chart, 'select', function(e) {
      //the built-in tooltip
      var tooltip = document.querySelector('.google-visualization-tooltip:not([clone])');
      //remove previous clone when there is any
      if (chart.ttclone) {
        chart.ttclone.parentNode.removeChild(chart.ttclone)
      }
      //create a clone of the built-in tooltip
      chart.ttclone = tooltip.cloneNode(true);
      //create a custom attribute to be able to distinguish
      //built-in tooltip and clone
      chart.ttclone.setAttribute('clone', true);
      //inject clone into document
      chart.ttclone.style.pointerEvents = 'auto';
      tooltip.parentNode.insertBefore(chart.ttclone, chart.tooltip);
      chart.ttclone.parentNode.addEventListener('mouseout', function () {
        chart.ttclone.style.display = 'none';  
      }, false);
      chart.ttclone.parentNode.addEventListener('mouseover', function () {
        chart.ttclone.style.display = 'block';  
      }, false);
    });

    function createToolTip() {
      var mainDiv = '<div style="z-index: 1000;">';
      var list =
        '<ul class="google-visualization-tooltip-action-list">' +
          '<li class="google-visualization-tooltip-action">' +
            '<span style="font-family: Arial; font-size: 12px; color: rgb(0, 0, 0); margin: 0px; text-decoration: none; font-weight: bold;">' +
              '<a href="mailto:test@test.com?Subject=test">Contact</a>' +
            '</span>' +
          '</li>' +
        '</ul>';
      var endMainDiv = '</div>';
      var tooltip = mainDiv + list + endMainDiv;
      return tooltip;
    }

    chart.draw(dataTable, {tooltip: {isHtml: true }});
  },
  packages: ['timeline']
});

.google-visualization-tooltip {
  opacity: 0 !important;
  max-width: 200px !important;
}
.google-visualization-tooltip[clone] {
  opacity: 1 !important;
}
html,
body,
timeline {
  width: 100%;
  height: 100%;
  margin: 0;
  padding: 0;
}

<script src="https://www.gstatic.com/charts/loader.js"></script>
<div id="timeline" style="height:90%"></div>