From 1fb5c0433d22a2af2b7f5b7e9045fa4703b21281 Mon Sep 17 00:00:00 2001
From: Gabriele Monaco <glemco@posteo.net>
Date: Thu, 15 Dec 2022 21:05:52 +0300
Subject: [PATCH] clkinfo: repeating selection if menu is empty

---
 modules/clock_info.js | 13 +++++++++----
 1 file changed, 9 insertions(+), 4 deletions(-)

diff --git a/modules/clock_info.js b/modules/clock_info.js
index 6f37e5d3d..643a9f6f7 100644
--- a/modules/clock_info.js
+++ b/modules/clock_info.js
@@ -239,10 +239,15 @@ exports.addInteractive = function(menu, options) {
     } else if (lr) {
       if (menu.length==1) return; // 1 item - can't move
       oldMenuItem = menu[options.menuA].items[options.menuB];
-      options.menuA += lr;
-      if (options.menuA<0) options.menuA = menu.length-1;
-      if (options.menuA>=menu.length) options.menuA = 0;
-      options.menuB = 0;
+      do {
+        options.menuA += lr;
+        if (options.menuA<0) options.menuA = menu.length-1;
+        if (options.menuA>=menu.length) options.menuA = 0;
+        options.menuB = 0;
+        //get the next one if the menu is empty
+        //can happen for dynamic ones (alarms, events)
+        //in the worst case we come back to 0
+      } while(menu[options.menuA].items.length==0);
     }
     if (oldMenuItem) {
       menuHideItem(oldMenuItem);