From caf9ab2f8aa526306acddd6f911e70dfbbcbf963 Mon Sep 17 00:00:00 2001
From: ovidiu <oleaovidiu94@gmail.com>
Date: Sat, 14 Dec 2019 21:50:13 +0200
Subject: [PATCH] fix(#423): prevent default behavior on keyboard interaction

---
 packages/calendar/src/LionCalendar.js | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/packages/calendar/src/LionCalendar.js b/packages/calendar/src/LionCalendar.js
index 4028f1f5a..22603d1a3 100644
--- a/packages/calendar/src/LionCalendar.js
+++ b/packages/calendar/src/LionCalendar.js
@@ -518,6 +518,12 @@ export class LionCalendar extends LocalizeMixin(LitElement) {
 
   __addEventForKeyboardNavigation() {
     this.__keyNavigationEvent = this.__contentWrapperElement.addEventListener('keydown', ev => {
+      const preventedKeys = ['ArrowUp', 'ArrowDown', 'PageDown', 'PageUp'];
+
+      if (preventedKeys.includes(ev.key)) {
+        ev.preventDefault();
+      }
+
       switch (ev.key) {
         case 'ArrowUp':
           this.__modifyDate(-7, { dateType: '__focusedDate', type: 'Date', mode: 'past' });