diff options
author | crupest <crupest@outlook.com> | 2022-04-24 19:56:15 +0800 |
---|---|---|
committer | crupest <crupest@outlook.com> | 2022-04-24 19:56:15 +0800 |
commit | c81dfffe0076c94dc61397fd17677cb24f67cdf2 (patch) | |
tree | 8cf9811371dfb68a487bbde199c67628e12ed020 /FrontEnd/src/utilities/useScrollToTop.ts | |
parent | 4fdf7d1cb50c3dd8ea8e96f7fb4cf8f655152dcc (diff) | |
download | timeline-c81dfffe0076c94dc61397fd17677cb24f67cdf2.tar.gz timeline-c81dfffe0076c94dc61397fd17677cb24f67cdf2.tar.bz2 timeline-c81dfffe0076c94dc61397fd17677cb24f67cdf2.zip |
...
Diffstat (limited to 'FrontEnd/src/utilities/useScrollToTop.ts')
-rw-r--r-- | FrontEnd/src/utilities/useScrollToTop.ts | 43 |
1 files changed, 0 insertions, 43 deletions
diff --git a/FrontEnd/src/utilities/useScrollToTop.ts b/FrontEnd/src/utilities/useScrollToTop.ts deleted file mode 100644 index 95c8b7b9..00000000 --- a/FrontEnd/src/utilities/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; |