From 692c8f218f43d8b28daabd891a2fca22fb53e54a Mon Sep 17 00:00:00 2001
From: Ximi1970 <ximi.github@gmail.com>
Date: Sun, 5 Sep 2021 14:10:04 +0200
Subject: [PATCH] Fix listener error

---
 webext/options.js | 12 +++++++++---
 1 file changed, 9 insertions(+), 3 deletions(-)

diff --git a/webext/options.js b/webext/options.js
index ab60ead..406791f 100644
--- a/webext/options.js
+++ b/webext/options.js
@@ -305,8 +305,8 @@ SysTrayX.SaveOptions = {
       addonprefchanged: true,
     });
 
-//    const inUse = await browser.storage.sync.getBytesInUse();
-//    console.log("Storage in use: " + inUse);
+    //    const inUse = await browser.storage.sync.getBytesInUse();
+    //    console.log("Storage in use: " + inUse);
   },
 };
 
@@ -1187,7 +1187,7 @@ async function start() {
   SysTrayX.Info.version = browser.runtime.getManifest().version;
 
   //  Get storage type
-  SysTrayX.Info.storageType = "local"
+  SysTrayX.Info.storageType = "local";
   /*
   SysTrayX.Info.storageType = await browser.storage.sync
     .get("storageType")
@@ -1227,6 +1227,12 @@ async function start() {
     .addEventListener("submit", SysTrayX.StorageReset.reset);
 
   browser.storage.onChanged.addListener(SysTrayX.StorageChanged.changed);
+
+  document.addEventListener("visibilitychange", function () {
+    if (document.visibilityState === "hidden") {
+      browser.storage.onChanged.removeListener(SysTrayX.StorageChanged.changed);
+    }
+  });
 }
 
 start();