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authorcrupest <crupest@outlook.com>2021-06-15 18:25:17 +0800
committerGitHub <noreply@github.com>2021-06-15 18:25:17 +0800
commit4645761c2090aeaf8c26789155b342c048f44535 (patch)
tree1aab5ce94549f3f8b3fd1a31c84fb2dd8b6b2511 /FrontEnd/src/app/utilities/useScrollToTop.ts
parent485ef185153890b7c6ac4ed9798a3f2db80c8845 (diff)
parentb6afd5e8161126522bdfff876f5483fa97e94797 (diff)
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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.ts43
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;