Ticket #18517: 18517.diff

wp-admin/js/nav-menu.js

@@ -528 +528 @@
 
                         processMethod = processMethod || api.addMenuItemToBottom;
 
-                        if ( '' == url || 'http://' == url )
+                        //Highlight the form field with red if URL is empty
+                        if ( '' == url || 'http://' == url )    {
+                                $('#menu-item-url-wrap').addClass('form-invalid');
                                 return false;
+                        }
 
                         // Show the ajax spinner
                         $('.customlinkdiv .spinner').show();

wp-admin/css/wp-admin.css

@@ -526 +526 @@
 .nav-menus-php .list-container,
 .menu-item-handle,
 .link-to-original,
+.customlinkdiv .form-invalid,
 .nav-menus-php .major-publishing-actions .form-invalid,
 .press-this #message,
 #TB_window,
@@ -7358 +7359 @@
         text-decoration: none;
 }
 
+.customlinkdiv .form-invalid,
 .nav-menus-php .major-publishing-actions .form-invalid {
         padding-left: 4px;
         margin-left: -4px;