lbry-desktop/ui/component/claimPreview/index.js
infinite-persistence 0c2c21b67e
re-reselect proof of concept + fix Date selector as first example
## Issue
`makeSelectDataForUri` always returns a new reference, so `ClaimPreview` was constantly being rendered. It's pretty expensive since `ClaimPreview`'s rendering checks against a huge blocklist, which is another issue on it's own.

## Changes
- This commit tests the usage of `re-reselect` as the solution to the multi-instance memoization problem (https://github.com/toomuchdesign/re-reselect/blob/master/examples/1-join-selectors.md)
2021-10-20 11:29:15 +08:00

74 lines
3.5 KiB
JavaScript

import { connect } from 'react-redux';
import {
selectClaimForUri,
makeSelectIsUriResolving,
makeSelectClaimIsMine,
makeSelectClaimIsPending,
makeSelectClaimIsNsfw,
makeSelectReflectingClaimForUri,
makeSelectClaimWasPurchased,
makeSelectClaimIsStreamPlaceholder,
makeSelectTitleForUri,
selectDateForUri,
} from 'redux/selectors/claims';
import { makeSelectStreamingUrlForUri } from 'redux/selectors/file_info';
import {
makeSelectCollectionIsMine,
makeSelectUrlsForCollectionId,
makeSelectIndexForUrlInCollection,
} from 'redux/selectors/collections';
import { doResolveUri } from 'redux/actions/claims';
import { doCollectionEdit } from 'redux/actions/collections';
import { doFileGet } from 'redux/actions/file';
import { selectMutedChannels, makeSelectChannelIsMuted } from 'redux/selectors/blocked';
import { selectBlackListedOutpoints, selectFilteredOutpoints } from 'lbryinc';
import { makeSelectIsActiveLivestream } from 'redux/selectors/livestream';
import { selectShowMatureContent } from 'redux/selectors/settings';
import { makeSelectHasVisitedUri } from 'redux/selectors/content';
import { makeSelectIsSubscribed } from 'redux/selectors/subscriptions';
import { selectModerationBlockList } from 'redux/selectors/comments';
import ClaimPreview from './view';
import formatMediaDuration from 'util/formatMediaDuration';
const select = (state, props) => {
const claim = props.uri && selectClaimForUri(state, props.uri);
const media = claim && claim.value && (claim.value.video || claim.value.audio);
const mediaDuration = media && media.duration && formatMediaDuration(media.duration, { screenReader: true });
return {
claim,
mediaDuration,
date: props.uri && selectDateForUri(state, props.uri),
title: props.uri && makeSelectTitleForUri(props.uri)(state),
pending: props.uri && makeSelectClaimIsPending(props.uri)(state),
reflectingProgress: props.uri && makeSelectReflectingClaimForUri(props.uri)(state),
obscureNsfw: selectShowMatureContent(state) === false,
claimIsMine: props.uri && makeSelectClaimIsMine(props.uri)(state),
isResolvingUri: props.uri && makeSelectIsUriResolving(props.uri)(state),
isResolvingRepost: props.uri && makeSelectIsUriResolving(props.repostUrl)(state),
nsfw: props.uri && makeSelectClaimIsNsfw(props.uri)(state),
blackListedOutpoints: selectBlackListedOutpoints(state),
filteredOutpoints: selectFilteredOutpoints(state),
mutedUris: selectMutedChannels(state),
blockedUris: selectModerationBlockList(state),
hasVisitedUri: props.uri && makeSelectHasVisitedUri(props.uri)(state),
channelIsBlocked: props.uri && makeSelectChannelIsMuted(props.uri)(state),
isSubscribed: props.uri && makeSelectIsSubscribed(props.uri, true)(state),
streamingUrl: props.uri && makeSelectStreamingUrlForUri(props.uri)(state),
wasPurchased: props.uri && makeSelectClaimWasPurchased(props.uri)(state),
isLivestream: makeSelectClaimIsStreamPlaceholder(props.uri)(state),
isLivestreamActive: makeSelectIsActiveLivestream(props.uri)(state),
isCollectionMine: makeSelectCollectionIsMine(props.collectionId)(state),
collectionUris: makeSelectUrlsForCollectionId(props.collectionId)(state),
collectionIndex: makeSelectIndexForUrlInCollection(props.uri, props.collectionId)(state),
};
};
const perform = (dispatch) => ({
resolveUri: (uri) => dispatch(doResolveUri(uri)),
getFile: (uri) => dispatch(doFileGet(uri, false)),
editCollection: (id, params) => dispatch(doCollectionEdit(id, params)),
});
export default connect(select, perform)(ClaimPreview);