Merge pull request #147 from magento-commerce/magento2-login-as-customer/issues/145

magento2-login-as-customer/issues/145: Spinner/Loader should appear before page content.

Author: naydav

app/code/Magento/LoginAsCustomerUi/view/frontend/templates/login.phtml

@@ -4,8 +4,17 @@
  * See COPYING.txt for license details.
  */
 /** @var \Magento\Framework\View\Element\Template $block */
+/** @var \Magento\Framework\Escaper $escaper */
 ?>
 
+<div class="loading-mask">
+    <div class="loader">
+        <img src="<?= $escaper->escapeUrl($block->getViewFileUrl('images/loader-1.gif')) ?>"
+             alt="<?= $escaper->escapeHtmlAttr(__('Loading...')) ?>"
+             style="position: absolute;">
+    </div>
+</div>
+
 <script type="text/x-magento-init">
 {
     "*": {

app/code/Magento/LoginAsCustomerUi/view/frontend/web/js/login.js

@@ -12,7 +12,6 @@ define([
     'use strict';
 
     return function (config) {
-        $('body').trigger('processStart');
         customerData.reload(sectionConfig.getSectionNames()).done(function () {
             window.location.href = config.redirectUrl;
         });