PB-46: Parallax Is Broken On Slide Out Forms

- Fix full screen issues with dynamic block and CMS block

Author: davemacaulay

app/code/Magento/PageBuilder/view/adminhtml/requirejs-config.js

@@ -35,6 +35,9 @@ var config = {
             },
             'Magento_Ui/js/form/form': {
                 'Magento_PageBuilder/js/form/form-mixin': true
+            },
+            'Magento_PageBuilder/js/content-type/row/appearance/default/widget': {
+                'Magento_PageBuilder/js/content-type/row/appearance/default/widget-mixin': true
             }
         }
     }

app/code/Magento/PageBuilder/view/adminhtml/web/js/content-type/row/appearance/default/widget-mixin.js

@@ -0,0 +1,34 @@
+define(['underscore', 'jquery', 'Magento_PageBuilder/js/events'], function (_, $, events) {
+    'use strict';
+
+    return function (target) {
+        return function (config, element) {
+            var result = target(config, element),
+                stageId = $(element).parents('[data-role="pagebuilder-stage"]').attr('id'),
+                $element = $(element);
+
+            if ($element.data('appearance') === 'contained') {
+                $element = $(element).find('[data-element="inner"]');
+            }
+
+            // If Parallax isn't enabled, let's not attach the event
+            if ($element.data('enableParallax') !== 1) {
+                return result;
+            }
+
+            // Listen for full screen events and destroy and rebuild jarallax
+            events.on('stage:' + stageId + ':fullScreenModeChangeAfter', function () {
+                _.delay(function () {
+                    try {
+                        window.jarallax($element[0], 'destroy');
+                    } catch (e) {
+                        // Failure of destroying is acceptable
+                    }
+                    target(config, element);
+                }, 350);
+            });
+
+            return result;
+        };
+    };
+});