// generateChart is a required function which will be called to generate your JS chart
generateChart = function(options) 
{
    // This is the div you draw your chart into
    var $chartDrawDiv = $(options.divSelector);
    //console.log(JSON.stringify(options));
   
   // Use require to load the javascript libraries you need
   require(['http://www.gstatic.com/charts/loader.js'],function() 
   {
       google.charts.load("current", {packages: ["corechart"]});
       google.charts.setOnLoadCallback(function()
       {
           // Process the data for your chart with the data in options.dataset.data if necessary
           var processedData = processData(options.dataset.data);
           
           doDrawing(processedData, $chartDrawDiv, options.dataset.chart_information.height, options.dataset.chart_information.width, options.dataset.attributes.default_colours);
       });

   });
},

processData = function(dataset) 
{
    var data = new google.visualization.DataTable();
        data.addColumn('string', 'Country');
        data.addColumn('number', 'Population');
        data.addRows(['Europe', 3000]);
        data.addRows(['India', 4000]);
        data.addRows(['Australia', 2000]);
        data.addRows(['America', 1000]);
        data.addRows(['China', 5000]);

        // Set chart options
        var options = {'title':'Worldwide Population',
                       'width':400,
                       'height':300};

  return data;
},

doDrawing = function(data, $chartDrawDiv, height, width, colours) 
{
   // Do the actual drawing of the chart into $chartDiv.
    var chart = new google.visualization.OrgChart($chartDrawDiv[0]);
    var options = {
        height:height,

        width:width,

        colors:colours,
    };

    chart.draw(data, options);
};