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Memoize ancestorIds and descendantIds in detailed status view (#11234)

This commit is contained in:
ThibG 2019-07-02 16:03:54 +02:00 committed by Eugen Rochko
parent 3bc0c4a884
commit 99924f282f
1 changed files with 47 additions and 27 deletions
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74
app/javascript/mastodon/features/status/index.js
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@ -4,6 +4,7 @@ import { connect } from 'react-redux';
import PropTypes from 'prop-types';
import classNames from 'classnames';
import ImmutablePropTypes from 'react-immutable-proptypes';
import { createSelector } from 'reselect';
import { fetchStatus } from '../../actions/statuses';
import MissingIndicator from '../../components/missing_indicator';
import DetailedStatus from './components/detailed_status';
@ -63,39 +64,58 @@ const messages = defineMessages({
const makeMapStateToProps = () => {
const getStatus = makeGetStatus();
const getAncestorsIds = createSelector([
(_, { id }) => id,
state => state.getIn(['contexts', 'inReplyTos']),
], (statusId, inReplyTos) => {
let ancestorsIds = Immutable.List();
ancestorsIds = ancestorsIds.withMutations(mutable => {
let id = statusId;
while (id) {
mutable.unshift(id);
id = inReplyTos.get(id);
}
});
return ancestorsIds;
});
const getDescendantsIds = createSelector([
(_, { id }) => id,
state => state.getIn(['contexts', 'replies']),
], (statusId, contextReplies) => {
let descendantsIds = Immutable.List();
descendantsIds = descendantsIds.withMutations(mutable => {
const ids = [statusId];
while (ids.length > 0) {
let id = ids.shift();
const replies = contextReplies.get(id);
if (statusId !== id) {
mutable.push(id);
}
if (replies) {
replies.reverse().forEach(reply => {
ids.unshift(reply);
});
}
}
});
return descendantsIds;
});
const mapStateToProps = (state, props) => {
const status = getStatus(state, { id: props.params.statusId });
let ancestorsIds = Immutable.List();
let descendantsIds = Immutable.List();
if (status) {
ancestorsIds = ancestorsIds.withMutations(mutable => {
let id = status.get('in_reply_to_id');
while (id) {
mutable.unshift(id);
id = state.getIn(['contexts', 'inReplyTos', id]);
}
});
descendantsIds = descendantsIds.withMutations(mutable => {
const ids = [status.get('id')];
while (ids.length > 0) {
let id = ids.shift();
const replies = state.getIn(['contexts', 'replies', id]);
if (status.get('id') !== id) {
mutable.push(id);
}
if (replies) {
replies.reverse().forEach(reply => {
ids.unshift(reply);
});
}
}
});
ancestorsIds = getAncestorsIds(state, { id: status.get('in_reply_to_id') });
descendantsIds = getDescendantsIds(state, { id: status.get('id') });
}
return {