rebuild hrm

node_modules/@react-aria/utils/src/useLoadMoreSentinel.ts

@@ -0,0 +1,63 @@
+/*
+ * Copyright 2024 Adobe. All rights reserved.
+ * This file is licensed to you under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License. You may obtain a copy
+ * of the License at http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software distributed under
+ * the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR REPRESENTATIONS
+ * OF ANY KIND, either express or implied. See the License for the specific language
+ * governing permissions and limitations under the License.
+ */
+
+import type {AsyncLoadable, Collection} from '@react-types/shared';
+import {getScrollParent} from './getScrollParent';
+import {RefObject, useRef} from 'react';
+import {useEffectEvent} from './useEffectEvent';
+import {useLayoutEffect} from './useLayoutEffect';
+
+export interface LoadMoreSentinelProps extends Omit<AsyncLoadable, 'isLoading'> {
+  collection: Collection<any>,
+  /**
+   * The amount of offset from the bottom of your scrollable region that should trigger load more.
+   * Uses a percentage value relative to the scroll body's client height. Load more is then triggered
+   * when your current scroll position's distance from the bottom of the currently loaded list of items is less than
+   * or equal to the provided value. (e.g. 1 = 100% of the scroll region's height).
+   * @default 1
+   */
+  scrollOffset?: number
+}
+
+export function useLoadMoreSentinel(props: LoadMoreSentinelProps, ref: RefObject<HTMLElement | null>): void {
+  let {collection, onLoadMore, scrollOffset = 1} = props;
+
+  let sentinelObserver = useRef<IntersectionObserver>(null);
+
+  let triggerLoadMore = useEffectEvent((entries: IntersectionObserverEntry[]) => {
+    // Use "isIntersecting" over an equality check of 0 since it seems like there is cases where
+    // a intersection ratio of 0 can be reported when isIntersecting is actually true
+    for (let entry of entries) {
+      // Note that this will be called if the collection changes, even if onLoadMore was already called and is being processed.
+      // Up to user discretion as to how to handle these multiple onLoadMore calls
+      if (entry.isIntersecting && onLoadMore) {
+        onLoadMore();
+      }
+    }
+  });
+
+  useLayoutEffect(() => {
+    if (ref.current) {
+      // Tear down and set up a new IntersectionObserver when the collection changes so that we can properly trigger additional loadMores if there is room for more items
+      // Need to do this tear down and set up since using a large rootMargin will mean the observer's callback isn't called even when scrolling the item into view beause its visibility hasn't actually changed
+      // https://codesandbox.io/p/sandbox/magical-swanson-dhgp89?file=%2Fsrc%2FApp.js%3A21%2C21
+      sentinelObserver.current = new IntersectionObserver(triggerLoadMore, {root: getScrollParent(ref?.current) as HTMLElement, rootMargin: `0px ${100 * scrollOffset}% ${100 * scrollOffset}% ${100 * scrollOffset}%`});
+      sentinelObserver.current.observe(ref.current);
+    }
+
+    return () => {
+      if (sentinelObserver.current) {
+        sentinelObserver.current.disconnect();
+      }
+    };
+  }, [collection, ref, scrollOffset]);
+}