feat(FR-1530): Implement window focus check for automatic refresh interval

react/src/components/BAIFetchKeyButton.tsx

@@ -16,6 +16,7 @@ interface BAIAutoRefetchButtonProps
   size?: ButtonProps['size'];
   onChange: (fetchKey: string) => void;
   hidden?: boolean;
+  pauseWhenHidden?: boolean;
 }
 const BAIFetchKeyButton: React.FC<BAIAutoRefetchButtonProps> = ({
   value,
@@ -26,6 +27,7 @@ const BAIFetchKeyButton: React.FC<BAIAutoRefetchButtonProps> = ({
   size,
   hidden,
   lastLoadTime: lastLoadTimeProp,
+  pauseWhenHidden = true,
   ...buttonProps
 }) => {
   const { t } = useTranslation();
@@ -65,6 +67,7 @@ const BAIFetchKeyButton: React.FC<BAIAutoRefetchButtonProps> = ({
     },
     showLastLoadTime ? 5_000 : null,
     lastLoadTime.toISOString(),
+    pauseWhenHidden,
   );
 
   // remember when loading is done to display when the last fetch was done
@@ -80,6 +83,7 @@ const BAIFetchKeyButton: React.FC<BAIAutoRefetchButtonProps> = ({
     },
     // only start auto-updating after the previous loading is false(done).
     loading ? null : autoUpdateDelay,
+    pauseWhenHidden,
   );
 
   const tooltipTitle = showLastLoadTime ? loadTimeMessage : undefined;

react/src/hooks/useIntervalValue.tsx

@@ -5,24 +5,57 @@ import { useEffect, useRef, useState } from 'react';
  *
  * @param callback The function to be executed at the specified interval.
  * @param delay The delay (in milliseconds) between each execution of the callback function. If `null`, the interval is cleared(pause).
+ * @param pauseWhenHidden Whether to pause the interval when the page becomes hidden. Defaults to true.
  */
-export function useInterval(callback: () => void, delay: number | null) {
-  const savedCallback = useRef<() => any>(null);
+export function useInterval(
+  callback: () => void,
+  delay: number | null,
+  pauseWhenHidden: boolean = true,
+) {
+  const savedCallback = useRef<(() => void) | null>(null);
+  const [isPageVisible, setIsPageVisible] = useState(() =>
+    typeof document === 'undefined' ? true : !document.hidden,
+  );
 
   useEffect(() => {
     savedCallback.current = callback;
   });
 
+  // Handle page visibility changes
+  useEffect(() => {
+    if (!pauseWhenHidden || typeof window === 'undefined') return;
+
+    const handleVisibilityChange = () => {
+      const visible = !document.hidden;
+      setIsPageVisible((prev) => {
+        if (delay !== null && !prev && visible) {
+          // Execute callback immediately when page becomes visible again
+          savedCallback.current?.();
+        }
+        return visible;
+      });
+    };
+
+    document.addEventListener('visibilitychange', handleVisibilityChange);
+
+    return () => {
+      document.removeEventListener('visibilitychange', handleVisibilityChange);
+    };
+  }, [pauseWhenHidden, delay]);
+
   useEffect(() => {
     function tick() {
       savedCallback.current?.();
     }
 
     if (delay !== null) {
-      let id = setInterval(tick, delay);
-      return () => clearInterval(id);
+      // Only check visibility if pauseWhenHidden is enabled
+      if (!pauseWhenHidden || isPageVisible) {
+        let id = setInterval(tick, delay);
+        return () => clearInterval(id);
+      }
     }
-  }, [delay]);
+  }, [delay, pauseWhenHidden, isPageVisible]);
 }
 
 /**
@@ -31,14 +64,16 @@ export function useInterval(callback: () => void, delay: number | null) {
  * @param calculator - A function that calculates the value.
  * @param delay - The delay in milliseconds between updates.
  * @param triggerKey - An optional key that triggers an immediate update when changed.
+ * @param pauseWhenHidden - Whether to pause the interval when the page becomes hidden. Defaults to true.
  * @returns The updated value.
  */
-export const useIntervalValue = (
-  calculator: () => any,
+export function useIntervalValue<T>(
+  calculator: () => T,
   delay: number | null,
   triggerKey?: string,
-) => {
-  const [result, setResult] = useState(calculator());
+  pauseWhenHidden: boolean = true,
+): T {
+  const [result, setResult] = useState<T>(calculator());
 
   useEffect(() => {
     if (triggerKey) {
@@ -47,10 +82,14 @@ export const useIntervalValue = (
     // eslint-disable-next-line react-hooks/exhaustive-deps
   }, [triggerKey]);
 
-  useInterval(() => {
-    const newResult = calculator();
-    if (newResult !== result) setResult(newResult);
-  }, delay);
+  useInterval(
+    () => {
+      const newResult = calculator();
+      if (newResult !== result) setResult(newResult);
+    },
+    delay,
+    pauseWhenHidden,
+  );
 
   return result;
-};
+}