[FIX] web_editor: do not delete empty .oe_structure element

If a snippet contains a .oe_structure element inside of it, it allows
the user to drop other snippets in that location. The web_editor
contains code which removes all empty parent of an element being
deleted. This is done so that, for example, when the last col of a
3-col snippet is removed, the whole snippet is removed.

However, there was an exception to this rule which was not considered,
if one of these empty parent is an .oe_structure, it should not be
removed.

Note: the only snippet which does this is the parallax snippet.

1 files changed, 2 insertions, 2 deletions

diff --git a/addons/web_editor/static/src/js/snippets.editor.js b/addons/web_editor/static/src/js/snippets.editor.js
index 6cf2a9d33fd..19251f75af2 100644
--- a/addons/web_editor/static/src/js/snippets.editor.js
+++ b/addons/web_editor/static/src/js/snippets.editor.js
@@ -1076,12 +1076,12 @@ data.Editor = Class.extend({
         if($parent.closest(":data(\"snippet-editor\")").length) {
             while (!$parent.data("snippet-editor")) {
                 var $nextParent = $parent.parent();
-                if ($parent.children().length === 0 && $parent.text().trim() === "") {
+                if ($parent.children().length === 0 && $parent.text().trim() === "" && !$parent.hasClass("oe_structure")) {
                     $parent.remove();
                 }
                 $parent = $nextParent;
             }
-            if ($parent.children().length === 0 && $parent.text().trim() === "") {
+            if ($parent.children().length === 0 && $parent.text().trim() === "" && !$parent.hasClass("oe_structure")) {
                 _.defer(function () {
                     $parent.data("snippet-editor").on_remove();
                 });