78 lines
2.7 KiB
TypeScript
78 lines
2.7 KiB
TypeScript
import debounce from 'lodash/debounce';
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import React, { useCallback, useMemo } from 'react';
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import { defineMessages } from 'react-intl';
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import { dequeueTimeline, scrollTopTimeline } from 'pl-fe/actions/timelines';
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import ScrollTopButton from 'pl-fe/components/scroll-top-button';
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import StatusList, { IStatusList } from 'pl-fe/components/status-list';
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import Portal from 'pl-fe/components/ui/portal';
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import { useAppDispatch } from 'pl-fe/hooks/use-app-dispatch';
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import { useAppSelector } from 'pl-fe/hooks/use-app-selector';
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import { makeGetStatusIds } from 'pl-fe/selectors';
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const messages = defineMessages({
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queue: { id: 'status_list.queue_label', defaultMessage: 'Click to see {count} new {count, plural, one {post} other {posts}}' },
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});
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interface ITimeline extends Omit<IStatusList, 'statusIds' | 'isLoading' | 'hasMore'> {
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/** Unique key to preserve the scroll position when navigating back. */
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scrollKey: string;
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/** ID of the timeline in Redux. */
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timelineId: string;
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/** Settings path to use instead of the timelineId. */
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prefix?: string;
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}
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/** Scrollable list of statuses from a timeline in the Redux store. */
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const Timeline: React.FC<ITimeline> = ({
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timelineId,
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onLoadMore,
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prefix,
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...rest
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}) => {
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const dispatch = useAppDispatch();
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const getStatusIds = useMemo(makeGetStatusIds, []);
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const statusIds = useAppSelector(state => getStatusIds(state, { type: timelineId, prefix }));
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const lastStatusId = statusIds.at(-1);
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const isLoading = useAppSelector(state => state.timelines[timelineId]?.isLoading !== false);
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const isPartial = useAppSelector(state => (state.timelines[timelineId]?.isPartial || false) === true);
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const hasMore = useAppSelector(state => state.timelines[timelineId]?.hasMore === true);
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const totalQueuedItemsCount = useAppSelector(state => state.timelines[timelineId]?.totalQueuedItemsCount || 0);
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const handleDequeueTimeline = useCallback(() => {
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dispatch(dequeueTimeline(timelineId, onLoadMore));
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}, []);
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const handleScroll = useCallback(debounce((startIndex?: number) => {
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dispatch(scrollTopTimeline(timelineId, startIndex === 0));
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}, 100), [timelineId]);
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return (
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<>
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<Portal>
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<ScrollTopButton
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key='timeline-queue-button-header'
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onClick={handleDequeueTimeline}
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count={totalQueuedItemsCount}
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message={messages.queue}
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/>
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</Portal>
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<StatusList
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timelineId={timelineId}
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onScroll={handleScroll}
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lastStatusId={lastStatusId}
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statusIds={statusIds}
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isLoading={isLoading}
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isPartial={isPartial}
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hasMore={hasMore}
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onLoadMore={onLoadMore}
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{...rest}
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/>
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</>
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);
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};
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export { Timeline as default };
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