terriajs/lib/Core/GoogleAnalytics.js

Geospatial data visualization platform.

'use strict';

/*global require,ga*/
var defaultValue = require('terriajs-cesium/Source/Core/defaultValue');
var defined = require('terriajs-cesium/Source/Core/defined');

var GoogleAnalytics = function() {
    this.key = undefined;
    this.options = undefined;
};

GoogleAnalytics.prototype.start = function(userParameters) {
    this.key = userParameters.googleAnalyticsKey;
    this.options = userParameters.googleAnalyticsOptions;
};

GoogleAnalytics.prototype.logEvent = function(category, action, label, value) {
    initializeGoogleAnalytics(this);
    ga('send', 'event', category, action, label, value);
};

function initializeGoogleAnalytics(that) {
    if (defined(window.ga)) {
        return;
    }

    if (!defined(that.key)) {
        console.log('Google Analytics tracking is disabled because terria.configParameters.googleAnalyticsKey is not specified');
        window.ga = function() {};
        return;
    }

    (function(i,s,o,g,r,a,m) {
        i['GoogleAnalyticsObject']=r;
        i[r]=i[r]||function() {
            (i[r].q=i[r].q||[]).push(arguments);
        };
        i[r].l=1*new Date();
        a=s.createElement(o);
        m=s.getElementsByTagName(o)[0];
        a.async=1;
        a.src=g;
        m.parentNode.insertBefore(a,m);
    })(window,document,'script','https://www.google-analytics.com/analytics.js','ga');
    ga('create', that.key, defaultValue(that.options, 'auto'));
    ga('send', 'pageview');
}

module.exports = GoogleAnalytics;