Updates

components/hooks/userWindowFocus.tsx

@@ -0,0 +1,24 @@
+import { useCallback, useEffect, useState } from "react";
+
+export default function useWindowFocus() {
+    const [isWindowFocused, setIsWindowFocused] = useState(false);
+
+    const windowFocusCb = useCallback(() => {
+        setIsWindowFocused(true);
+    }, []);
+
+    const windowBlurCb = useCallback(() => {
+        setIsWindowFocused(false);
+    }, []);
+
+    useEffect(() => {
+        window.addEventListener("focus", windowFocusCb);
+        window.addEventListener("blur", windowBlurCb);
+        return function () {
+            window.removeEventListener("focus", windowFocusCb);
+            window.removeEventListener("blur", windowBlurCb);
+        };
+    }, []);
+
+    return { isWindowFocused };
+}