[Feature] Add Google Analytics Opt-Out for GDPR

Classes/Page/Part/FooterPart.php

@@ -158,8 +158,10 @@ public function buildGoogleAnalyticsCode(array $tsServices, array $gaConf)
             $this->cObj->data['gaCode']                  = $gaCode;
             $this->cObj->data['gaIsAnonymize']           = (int)!empty($gaConf['anonymizeIp']);
             $this->cObj->data['gaDomainName']            = $gaConf['domainName'];
+            $this->cObj->data['gaOptOutCode']           = (int)!empty($gaConf['optoutCode']);
             $this->cObj->data['gaCustomizationCode']     = $customCode;
             $this->cObj->data['gaUseUniversalAnalytics'] = (int)!empty($gaConf['universalAnalytics']);
+
 
             // Build code
             $ret[] = $this->cObj->cObjGetSingle($gaConf['template'], $gaConf['template.']);

Configuration/TypoScript/constants.txt

@@ -127,7 +127,9 @@ plugin.metaseo {
     services.googleAnalytics.domainName =
     # cat=plugin.metaseo.services/page/08; type=boolean; label= Google Analytics Anonymize IP: Enable anonymize IP
     services.googleAnalytics.anonymizeIp = 0
-    # cat=plugin.metaseo.services/page/09; type=boolean; label= Google Analytics Track Downloads: Track downloads (with javascript) (BETA!)
+    # cat=plugin.metaseo.services/page/09; type=boolean; label= Google Analytics Opt-Out-Code: Enable Opt-Out-Code
+    services.googleAnalytics.optoutCode = 0
+    # cat=plugin.metaseo.services/page/10; type=boolean; label= Google Analytics Track Downloads: Track downloads (with javascript) (BETA!)
     services.googleAnalytics.trackDownloads = 0
 
     # cat=plugin.metaseo.services/page/11; type=string; label= Piwik URL: Url to your piwik installation (eg. www.example.com/piwik/ - don't use http:// or https:// as prefix!)

Configuration/TypoScript/setup.txt

@@ -376,6 +376,8 @@ plugin.metaseo {
 
             anonymizeIp = {$plugin.metaseo.services.googleAnalytics.anonymizeIp}
             domainName = {$plugin.metaseo.services.googleAnalytics.domainName}
+
+            optoutCode = {$plugin.metaseo.services.googleAnalytics.optoutCode}
 
             trackDownloads = {$plugin.metaseo.services.googleAnalytics.trackDownloads}
             trackDownloadsScript = EXT:metaseo/Resources/Public/Frontend/JavaScript/GoogleAnalyticsTrackDownload.js
@@ -398,10 +400,13 @@ plugin.metaseo {
 
                         gaIsAnonymize = TEXT
                         gaIsAnonymize.field = gaIsAnonymize
-
+                        
                         gaDomainName = TEXT
                         gaDomainName.field = gaDomainName
 
+                        gaOptOutCode = TEXT
+                        gaOptOutCode.field = gaOptOutCode
+
                         gaUseUniversalAnalytics = TEXT
                         gaUseUniversalAnalytics.field = gaUseUniversalAnalytics
                     }

Resources/Private/Templates/PageParts/ServiceGoogleAnalytics.html

@@ -1,5 +1,16 @@
+<f:format.raw value="<script>" />
+<f:if condition="{gaOptOutCode}">
+<f:format.raw value="
+  var gaProperty = '{gaCode}';
+  var disableStr = 'ga-disable-' + gaProperty;
+  if (document.cookie.indexOf(disableStr + '=true') > -1) { window[disableStr] = true; }
+  function gaOptout() {
+    document.cookie = disableStr + '=true; expires=Thu, 31 Dec 2099 23:59:59 UTC; path=/';
+    window[disableStr] = true;
+  }
+  " />
+</f:if>
 <f:format.raw value="
-    <script>
         (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)