Resolved gh-363 so that showon will function as expected in the full width layout. Resolved gh-367 by adding a wrapper class around each field in the edit view.

admin/layouts/snippet/details_above.php

@@ -14,15 +14,20 @@ defined('_JEXEC') or die('Restricted access');
 
 $form = $displayData->getForm();
 
-$fields = array(
+$fields = $displayData->get('fields') ?: array(
 	'name',
 	'url',
 	'library'
 );
 
+$hiddenFields = $displayData->get('hidden_fields') ?: array();
+
 ?>
 <div class="form-inline form-inline-header">
-	<?php foreach($fields as $field){
-		echo $form->renderField($field);
-	} ?>
+	<?php foreach($fields as $field): ?>
+		<?php if (in_array($field, $hiddenFields)) : ?>
+			<?php $form->setFieldAttribute($field, 'type', 'hidden'); ?>
+		<?php endif; ?>
+		<?php echo $form->renderField($field, null, null, array('class' => 'control-wrapper-' . $field)); ?>
+	<?php endforeach; ?>
 </div>