Add files via upload

Author: ac-mmi

js/src/tab.js

@@ -153,9 +153,18 @@ class Tab extends BaseComponent {
   }
 
   _keydown(event) {
-    if (!([ARROW_LEFT_KEY, ARROW_RIGHT_KEY, ARROW_UP_KEY, ARROW_DOWN_KEY, HOME_KEY, END_KEY].includes(event.key))) {
-      return
-    }
+    if(this._parent.ariaOrientation==='vertical')
+      {
+      if (![ARROW_LEFT_KEY, ARROW_RIGHT_KEY, ARROW_UP_KEY, ARROW_DOWN_KEY, HOME_KEY, END_KEY].includes(event.key)) {
+        return;
+      } 
+      }
+      else
+      {
+      if (![ARROW_LEFT_KEY, ARROW_RIGHT_KEY, HOME_KEY, END_KEY].includes(event.key)) {
+        return;
+      }
+      }
 
     event.stopPropagation()// stopPropagation/preventDefault both added to support up/down keys without scrolling the page
     event.preventDefault()