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| author | crupest <crupest@outlook.com> | 2021-06-15 18:25:17 +0800 |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2021-06-15 18:25:17 +0800 |
| commit | 4645761c2090aeaf8c26789155b342c048f44535 (patch) | |
| tree | 1aab5ce94549f3f8b3fd1a31c84fb2dd8b6b2511 /FrontEnd/src/app/utilities/useScrollToTop.ts | |
| parent | 485ef185153890b7c6ac4ed9798a3f2db80c8845 (diff) | |
| parent | b6afd5e8161126522bdfff876f5483fa97e94797 (diff) | |
| download | timeline-4645761c2090aeaf8c26789155b342c048f44535.tar.gz timeline-4645761c2090aeaf8c26789155b342c048f44535.tar.bz2 timeline-4645761c2090aeaf8c26789155b342c048f44535.zip | |
Merge pull request #620 from crupest/vite
Migrate to vite!
Diffstat (limited to 'FrontEnd/src/app/utilities/useScrollToTop.ts')
| -rw-r--r-- | FrontEnd/src/app/utilities/useScrollToTop.ts | 43 |
1 files changed, 0 insertions, 43 deletions
diff --git a/FrontEnd/src/app/utilities/useScrollToTop.ts b/FrontEnd/src/app/utilities/useScrollToTop.ts deleted file mode 100644 index 892e3545..00000000 --- a/FrontEnd/src/app/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: 50, - 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; |
