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authorcrupest <crupest@outlook.com>2022-05-01 21:30:31 +0800
committercrupest <crupest@outlook.com>2022-05-01 21:30:31 +0800
commit3f07b047df4d66f83047a5bb747c0a1665bceb6c (patch)
tree95f2a8814806cdefd9b42b72aea39dd4b39db434 /FrontEnd/src/utilities/hooks/useScrollToTop.ts
parentf15f883198226a146113f82b3d7ca4864f3aa58b (diff)
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Diffstat (limited to 'FrontEnd/src/utilities/hooks/useScrollToTop.ts')
-rw-r--r--FrontEnd/src/utilities/hooks/useScrollToTop.ts43
1 files changed, 0 insertions, 43 deletions
diff --git a/FrontEnd/src/utilities/hooks/useScrollToTop.ts b/FrontEnd/src/utilities/hooks/useScrollToTop.ts
deleted file mode 100644
index 95c8b7b9..00000000
--- a/FrontEnd/src/utilities/hooks/useScrollToTop.ts
+++ /dev/null
@@ -1,43 +0,0 @@
-import React from "react";
-import { fromEvent } from "rxjs";
-import { filter, throttleTime } from "rxjs/operators";
-
-function useScrollToTop(
- handler: () => void,
- enable = true,
- option = {
- maxOffset: 5,
- throttle: 1000,
- }
-): void {
- const handlerRef = React.useRef<(() => void) | null>(null);
-
- React.useEffect(() => {
- handlerRef.current = handler;
-
- return () => {
- handlerRef.current = null;
- };
- }, [handler]);
-
- React.useEffect(() => {
- const subscription = fromEvent(window, "scroll")
- .pipe(
- filter(() => {
- return window.scrollY <= option.maxOffset;
- }),
- throttleTime(option.throttle)
- )
- .subscribe(() => {
- if (enable) {
- handlerRef.current?.();
- }
- });
-
- return () => {
- subscription.unsubscribe();
- };
- }, [enable, option.maxOffset, option.throttle]);
-}
-
-export default useScrollToTop;