feat: 无限滚动增加默认滚定位置

Author: fangzhizheng1

src/packages/infiniteloading/infiniteloading.tsx

@@ -23,6 +23,7 @@ export interface InfiniteLoadingProps extends BasicComponent {
   onRefresh: () => Promise<void>
   onLoadMore: () => Promise<void>
   onScroll: (param: number) => void
+  defaultScrollTop?: number
 }
 
 declare let window: Window & { webkitRequestAnimationFrame: any } & {
@@ -60,6 +61,7 @@ export const InfiniteLoading: FunctionComponent<
     onRefresh,
     onLoadMore,
     onScroll,
+    defaultScrollTop,
     ...restProps
   } = {
     ...defaultProps,
@@ -77,6 +79,16 @@ export const InfiniteLoading: FunctionComponent<
 
   const classes = classNames(classPrefix, className, `${classPrefix}-${type}`)
 
+  useEffect(() => {
+    if (defaultScrollTop) {
+      const childHeight = (getRefreshTop().firstElementChild as HTMLElement).offsetHeight || 0;
+      refreshMaxH.current = Math.floor(childHeight * 1 + 10);
+      setTimeout(() =>{
+        scrollEl.current.scrollTop = defaultScrollTop
+      }, 10)
+    }
+  }, [defaultScrollTop]);
+
   useEffect(() => {
     if (target && document.getElementById(target)) {
       scrollEl.current = document.getElementById(target)