lbry-desktop/ui/component/claimList/view.jsx
2020-01-03 15:51:44 -05:00

144 lines
4.3 KiB
JavaScript

// @flow
import { MAIN_WRAPPER_CLASS } from 'component/app/view';
import { MAIN_CLASS } from 'component/page/view';
import type { Node } from 'react';
import React, { useEffect, useState } from 'react';
import classnames from 'classnames';
import ClaimPreview from 'component/claimPreview';
import Spinner from 'component/spinner';
import { FormField } from 'component/common/form';
import usePersistedState from 'effects/use-persisted-state';
const SORT_NEW = 'new';
const SORT_OLD = 'old';
const PADDING_ALLOWANCE = 100;
type Props = {
uris: Array<string>,
header: Node | boolean,
headerAltControls: Node,
loading: boolean,
type: string,
empty?: string,
defaultSort?: boolean,
onScrollBottom?: any => void,
page?: number,
pageSize?: number,
id?: string,
// If using the default header, this is a unique ID needed to persist the state of the filter setting
persistedStorageKey?: string,
showHiddenByUser: boolean,
headerLabel?: string | Node,
};
export default function ClaimList(props: Props) {
const {
uris,
headerAltControls,
loading,
persistedStorageKey,
empty,
defaultSort,
type,
header,
onScrollBottom,
pageSize,
page,
id,
showHiddenByUser,
headerLabel,
} = props;
const [scrollBottomCbMap, setScrollBottomCbMap] = useState({});
const [currentSort, setCurrentSort] = usePersistedState(persistedStorageKey, SORT_NEW);
const urisLength = (uris && uris.length) || 0;
const sortedUris = (urisLength > 0 && (currentSort === SORT_NEW ? uris : uris.slice().reverse())) || [];
function handleSortChange() {
setCurrentSort(currentSort === SORT_NEW ? SORT_OLD : SORT_NEW);
}
useEffect(() => {
setScrollBottomCbMap({});
}, [id, setScrollBottomCbMap]);
useEffect(() => {
function handleScroll(e) {
if (page && pageSize && onScrollBottom && !scrollBottomCbMap[page]) {
const x = document.querySelector(`.${MAIN_WRAPPER_CLASS}`);
const mc = document.querySelector(`.${MAIN_CLASS}`);
if (
x &&
mc &&
(window.scrollY + window.innerHeight >= x.offsetHeight ||
x.offsetHeight - mc.offsetHeight > PADDING_ALLOWANCE) &&
!loading &&
urisLength >= pageSize
) {
onScrollBottom();
// Save that we've fetched this page to avoid weird stuff happening with fast scrolling
setScrollBottomCbMap({ ...scrollBottomCbMap, [page]: true });
}
}
}
if (onScrollBottom) {
window.addEventListener('scroll', handleScroll);
return () => {
window.removeEventListener('scroll', handleScroll);
};
}
}, [loading, onScrollBottom, urisLength, pageSize, page, setScrollBottomCbMap]);
return (
<section
className={classnames('claim-list', {
'claim-list--small': type === 'small',
})}
>
{header !== false && (
<React.Fragment>
{headerLabel && <label className="claim-list__header-label">{headerLabel}</label>}
<div className={classnames('claim-list__header', { 'claim-list__header--small': type === 'small' })}>
{header}
{loading && <Spinner type="small" />}
<div className="claim-list__alt-controls">
{headerAltControls}
{defaultSort && (
<FormField
className="claim-list__dropdown"
type="select"
name="file_sort"
value={currentSort}
onChange={handleSortChange}
>
<option value={SORT_NEW}>{__('Newest First')}</option>
<option value={SORT_OLD}>{__('Oldest First')}</option>
</FormField>
)}
</div>
</div>
</React.Fragment>
)}
{urisLength > 0 && (
<ul className="card ul--no-style">
{sortedUris.map((uri, index) => (
<ClaimPreview
key={uri}
uri={uri}
type={type}
properties={type !== 'small' ? undefined : false}
showUserBlocked={showHiddenByUser}
/>
))}
</ul>
)}
{urisLength === 0 && !loading && (
<div className="card--section main--empty empty">{empty || __('No results')}</div>
)}
</section>
);
}