https://getmegiddy.com/modules/contrib/facebook_pixel/js/facebook_pixel.js?v=2

1/**
2 * @file
3 * facebook_pixel.js
4 *
5 * Defines the behavior of the facebook pixel module.
6 */
7
8(function (Drupal, drupalSettings, once) {
9
10  'use strict';
11
12  function initTracking() {
13    var facebook_pixel_id = drupalSettings.facebook_pixel.facebook_id;
14
15    // Define Drupal.facebook_pixel.fb_disable as a dynamic condition to
16    // disable FB Pixel at runtime.
17    // This is helpful for GDPR compliance module integration
18    // and works even with static caching mechanisms like boost module.
19    Drupal.facebook_pixel = (typeof Drupal.facebook_pixel !== "undefined") ? Drupal.facebook_pixel : {};
20    Drupal.facebook_pixel.fb_disable = false;
21
22    // Define Opt-out conditions check
23    if (drupalSettings.facebook_pixel.fb_disable_advanced) {
24      // Facebook Pixel Opt-Out Code
25      window.fbOptout = function (reload = 0) {
26        reload = (typeof reload !== 'undefined') ? reload : 0;
27        var optoutWindowDisableKey = 'fb-disable';
28        document.cookie = optoutWindowDisableKey + '=true; expires=Thu, 31 Dec 2999 23:59:59 UTC; path=/';
29        window[optoutWindowDisableKey] = true;
30        if (reload) {
31          location.reload();
32        }
33      };
34      if (document.cookie.indexOf('fb-disable=true') > -1) {
35        window['fb-disable'] = true;
36      }
37      // End Facebook Pixel Opt-Out Code
38      Drupal.facebook_pixel.fb_disable = Drupal.facebook_pixel.fb_disable || window['fb-disable'] == true;
39    }
40
41    // Define eu_cookie_compliance conditions check (https://www.drupal.org/project/eu_cookie_compliance)
42    if (drupalSettings.facebook_pixel.eu_cookie_compliance) {
43      if (typeof Drupal.eu_cookie_compliance === "undefined") {
44        console.warn("facebook_pixel: facebook_pixel eu_cookie_compliance integration option is enabled, but eu_cookie_compliance javascripts seem to be loaded after facebook_pixel, which may break functionality.");
45      }
46      var eccHasAgreed = (typeof Drupal.eu_cookie_compliance !== "undefined" && Drupal.eu_cookie_compliance.hasAgreed());
47      Drupal.facebook_pixel.fb_disable = Drupal.facebook_pixel.fb_disable || !eccHasAgreed;
48    }
49
50    // Define Do-not-track conditions check (see https://www.w3.org/TR/tracking-dnt/)
51    if (drupalSettings.facebook_pixel.donottrack) {
52      var DNT = (typeof navigator.doNotTrack !== "undefined" && (navigator.doNotTrack === "yes" || navigator.doNotTrack == 1)) || (typeof navigator.msDoNotTrack !== "undefined" && navigator.msDoNotTrack == 1) || (typeof window.doNotTrack !== "undefined" && window.doNotTrack == 1);
53      // If eccHasAgreed is true, it overrides DNT because eu_cookie_compliance contains a setting for opt-in with DNT:
54      // "Automatic. Respect the DNT (Do not track) setting in the browser, if present. Uses opt-in when DNT is 1 or not set, and consent by default when DNT is 0."
55      Drupal.facebook_pixel.fb_disable = Drupal.facebook_pixel.fb_disable || (DNT && (typeof eccHasAgreed == "undefined" || !eccHasAgreed));
56    }
57
58    if (!Drupal.facebook_pixel.fb_disable) {
59      let elements = once('facebook_pixel_pageload_tracking', 'body');
60      elements.forEach(function () {
61        !function (f,b,e,v,n,t,s) {
62        if(f.fbq) { return;
63        }

63n = f.fbq = function () {n.callMethod ?
64        n.callMethod.apply(n,arguments):n.queue.push(arguments)};
65        if(!f._fbq) { f._fbq = n;
66        }n.push = n;n.loaded = !0;n.version = '2.0';
67        n.queue = [];t = b.createElement(e);t.async = !0;
68        t.src = v;s = b.getElementsByTagName(e)[0];
69        s.parentNode.insertBefore(t,s)}(window, document,'script',
70        'https://connect.facebook.net/en_US/fbevents.js');
71        fbq('init', facebook_pixel_id);
72        fbq('track', 'PageView');
73
74        drupalSettings.facebook_pixel.events.forEach(function (event) {
75          fbq("track", event['event'], JSON.parse(event['data']));
76        });
77      });
78    }
79  }
80
81  Drupal.behaviors.facebook_pixel = {
82    attach(context) {
83      let elements = once('facebook_pixel_behavior', 'body')
84      elements.forEach(function () {
85        initTracking();
86      });
87
88      document.addEventListener('eu_cookie_compliance.changeStatus', function() {
89        initTracking();
90      });
91    },
92  };
93
94}(Drupal, drupalSettings, once));