PLANET-7676 Added snippet for VWO Anti Flickering

- Added code to prevent flickering when A/B testing using VWO
greenpeace · Jan 22, 2025 · 9510438 · 9510438
1 parent 6cc0386
commit 9510438
Show file tree

Hide file tree

Showing 2 changed files with 16 additions and 1 deletion.
diff --git a/src/MasterSite.php b/src/MasterSite.php
@@ -327,6 +327,21 @@ function (): void {
             10
         );
 
+        // Add VWO Anti Flicker script
+        add_action(
+            'wp_head',
+            function (): void {
+                $enable_vwo = planet4_get_option('enable_vwo') === 'on';
+
+                if (!$enable_vwo) {
+                    return;
+                }
+
+                echo '<script>vwo_$("body").vwoCss({"visibility":"visible !important"});</script>' . PHP_EOL;
+            },
+            10
+        );
+
         AuthorPage::hooks();
         Search\Search::hooks();
         Sendgrid::hooks();

diff --git a/src/Settings.php b/src/Settings.php
@@ -478,7 +478,7 @@ public function __construct()
                     [
                         'name' => __('VWO A/B testing', 'planet4-master-theme-backend'),
                         'desc' => __(
-                            'Adds a Content Security Policy exception for VWO.',
+                            'Adds a Content Security Policy exception for VWO and enables its anti-flicker mechanism. Do not enable this if you are A/B testing with other tools.',
                             'planet4-master-theme-backend'
                         ),
                         'id' => 'enable_vwo',