feat: infiniteloading default scroll

src/packages/infiniteloading/doc.md

@@ -68,6 +68,7 @@ import { InfiniteLoading } from '@nutui/nutui-react'
 | onRefresh | 下拉刷新事件回调 | `() => Promise<void>` | `-` |
 | onLoadMore | 继续加载的回调函数 | `() => Promise<void>` | `-` |
 | onScroll | 实时监听滚动高度 | `(param: number) => void` | `-` |
+| defaultScrollTop | 默认滚动距离 | `number` | `-` |
 
 ## 主题定制
 

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,
@@ -101,6 +103,21 @@ export const InfiniteLoading: FunctionComponent<
     }
   }, [])
 
+  useEffect(() => {
+    if (defaultScrollTop) {
+      const childHeight =
+        (getRefreshTop().firstElementChild as HTMLElement).offsetHeight || 0
+      refreshMaxH.current = Math.floor(childHeight * 1 + 10)
+      setTimeout(() => {
+        if ((scrollEl.current as any)?.scrollTop !== undefined) {
+          ;(scrollEl.current as any).scrollTop = defaultScrollTop
+        } else if ((scrollEl.current as any)?.scrollY !== undefined) {
+          ;(scrollEl.current as any).scrollY = defaultScrollTop
+        }
+      }, 10)
+    }
+  }, [defaultScrollTop])
+
   const getStyle = () => {
     return {
       height: distance.current < 0 ? `0px` : `${distance.current}px`,