MAGETWO-52386: JS validation is absent for "Configurations" and "Images And Videos" panels

Author: Bohdan Korablov

app/code/Magento/Catalog/view/adminhtml/templates/catalog/product/helper/gallery.phtml

@@ -9,14 +9,11 @@
 /** @var $block \Magento\Catalog\Block\Adminhtml\Product\Helper\Form\Gallery\Content */
 $elementName = $block->getElement()->getName() . '[images]';
 $formName = $block->getFormName();
-$parentComponent = $block->getData('config/parentComponent')
-    ? 'data-parent-component="' . $block->getData('config/parentComponent') . '"'
-    : '';
 ?>
 <div id="<?php echo $block->getHtmlId() ?>"
      class="gallery"
      data-mage-init='{"productGallery":{"template":"#<?php echo $block->getHtmlId() ?>-template"}}'
-     <?php echo $parentComponent ?>
+     data-parent-component="<?php echo $block->escapeHtml($block->getData('config/parentComponent')) ?>"
      data-images="<?php echo $block->escapeHtml($block->getImagesJson()) ?>"
      data-types="<?php echo $block->escapeHtml(
          $this->helper('Magento\Framework\Json\Helper\Data')->jsonEncode($block->getImageTypes())

app/code/Magento/ProductVideo/view/adminhtml/templates/helper/gallery.phtml

@@ -9,9 +9,6 @@
 /** @var $block \Magento\Catalog\Block\Adminhtml\Product\Helper\Form\Gallery\Content */
 $elementName = $block->getElement()->getName() . '[images]';
 $formName = $block->getFormName();
-$parentComponent = $block->getData('config/parentComponent')
-    ? 'data-parent-component="' . $block->getData('config/parentComponent') . '"'
-    : '';
 ?>
 
 <div class="row">
@@ -36,7 +33,7 @@ $elementToggleCode = $element->getToggleCode() ? $element->getToggleCode() : 'to
 <div id="<?php echo $block->getHtmlId() ?>"
      class="gallery"
      data-mage-init='{"openVideoModal":{}}'
-     <?php echo $parentComponent ?>
+     data-parent-component="<?php echo $block->escapeHtml($block->getData('config/parentComponent')) ?>"
      data-images="<?php echo $block->escapeHtml($block->getImagesJson()) ?>"
      data-types="<?php echo $block->escapeHtml(
          $this->helper('Magento\Framework\Json\Helper\Data')->jsonEncode($block->getImageTypes())