From c3d1ebe505a8ef331e24310bf74687edcff6194b Mon Sep 17 00:00:00 2001
From: Paul Derscheid <paul.derscheid@lmscloud.de>
Date: Thu, 24 Oct 2024 14:41:39 +0000
Subject: [PATCH] Bug 38222: (follow-up) Minimally initialize combobox if
 passed no data via constructor or referenced elements
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

Sponsored-by: Büchereizentrale Schleswig-Holstein <https://www.bz-sh.de/>
---
 koha-tmpl/intranet-tmpl/prog/js/combobox.js | 11 +++++++++--
 1 file changed, 9 insertions(+), 2 deletions(-)

diff --git a/koha-tmpl/intranet-tmpl/prog/js/combobox.js b/koha-tmpl/intranet-tmpl/prog/js/combobox.js
index f70776b982..813b649849 100644
--- a/koha-tmpl/intranet-tmpl/prog/js/combobox.js
+++ b/koha-tmpl/intranet-tmpl/prog/js/combobox.js
@@ -78,12 +78,19 @@
             })
             .filter(option => option !== null);
 
-        const combinedData = [...existingOptions, ...data];
-
         let selectedValue = null;
         let query = "";
         let focusedIndex = -1;
 
+        const combinedData = [...existingOptions, ...data];
+        if (!combinedData?.length) {
+            dropdownMenu.style.display = "none";
+            return {
+                getSelectedValue: () => selectedValue,
+                reset,
+            };
+        }
+
         // Setup input attributes
         input.setAttribute("placeholder", placeholder);
         input.setAttribute("aria-expanded", "false");
-- 
2.47.0