From 8180b465633df2c185c2601bc3c26ea7a2b53e5c Mon Sep 17 00:00:00 2001
From: qsm-odoo <qsm@odoo.com>
Date: Wed, 20 Nov 2019 10:25:15 +0000
Subject: [PATCH] [FIX] web, web_editor: improve browser support for JS lazy
 loading

opw-2125858

closes odoo/odoo#41371

X-original-commit: d19982b7a22b04ab76c787b9adfffd24552eb5c0
Signed-off-by: Quentin Smetz (qsm) <qsm@odoo.com>
---
 addons/web/static/src/js/public/lazyloader.js        | 12 ++++++++----
 .../static/src/js/frontend/loader_loading.js         |  7 +++++--
 2 files changed, 13 insertions(+), 6 deletions(-)

diff --git a/addons/web/static/src/js/public/lazyloader.js b/addons/web/static/src/js/public/lazyloader.js
index 4f8be8c2d65..8ca0948cde8 100644
--- a/addons/web/static/src/js/public/lazyloader.js
+++ b/addons/web/static/src/js/public/lazyloader.js
@@ -21,11 +21,13 @@ function waitLazy() {
     }
     waitingLazy = true;
 
-    document.querySelectorAll('.o_wait_lazy_js').forEach(function (element) {
+    var lazyEls = document.querySelectorAll('.o_wait_lazy_js');
+    for (var i = 0; i < lazyEls.length; i++) {
+        var element = lazyEls[i];
         blockEvents.forEach(function (evType) {
             element.addEventListener(evType, blockFunction);
         });
-    });
+    }
 }
 /**
  * Unblocks the DOM sections blocked by @see waitLazy and removes the related
@@ -37,12 +39,14 @@ function stopWaitingLazy() {
     }
     waitingLazy = false;
 
-    document.querySelectorAll('.o_wait_lazy_js').forEach(function (element) {
+    var lazyEls = document.querySelectorAll('.o_wait_lazy_js');
+    for (var i = 0; i < lazyEls.length; i++) {
+        var element = lazyEls[i];
         blockEvents.forEach(function (evType) {
             element.removeEventListener(evType, blockFunction);
         });
         element.classList.remove('o_wait_lazy_js');
-    });
+    }
 }
 
 // Start waiting for lazy loading as soon as the DOM is available
diff --git a/addons/web_editor/static/src/js/frontend/loader_loading.js b/addons/web_editor/static/src/js/frontend/loader_loading.js
index b5156944470..f5e8eda7dd6 100644
--- a/addons/web_editor/static/src/js/frontend/loader_loading.js
+++ b/addons/web_editor/static/src/js/frontend/loader_loading.js
@@ -10,7 +10,10 @@
  */
 
 document.addEventListener('DOMContentLoaded', () => {
-    document.querySelectorAll('textarea.o_wysiwyg_loader').forEach(textarea => {
+    // Standard loop for better browser support
+    var textareaEls = document.querySelectorAll('textarea.o_wysiwyg_loader');
+    for (var i = 0; i < textareaEls.length; i++) {
+        var textarea = textareaEls[i];
         var wrapper = document.createElement('div');
         wrapper.classList.add('position-relative', 'o_wysiwyg_wrapper');
 
@@ -24,7 +27,7 @@ document.addEventListener('DOMContentLoaded', () => {
 
         textarea.parentNode.insertBefore(wrapper, textarea);
         wrapper.insertBefore(textarea, loadingElement);
-    });
+    }
 });
 
 })();