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Merge pull request #362 from ThibG/glitch-soc/fix-notifications-clearing

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Revert 245816ab2721f386184878d71be01143d207abf5 (fixes #348)
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beatrix 2018-02-10 21:47:27 -05:00 committed by GitHub
commit 136458eaf4
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1 changed files with 12 additions and 14 deletions
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26
app/javascript/flavours/glitch/components/intersection_observer_article.js
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@ -1,15 +1,10 @@
import React from 'react';
import PropTypes from 'prop-types';
import ImmutablePureComponent from 'react-immutable-pure-component';
import scheduleIdleTask from 'flavours/glitch/util/schedule_idle_task';
import getRectFromEntry from 'flavours/glitch/util/get_rect_from_entry';
import { is } from 'immutable';
// Diff these props in the "rendered" state
const updateOnPropsForRendered = ['id', 'index', 'listLength'];
// Diff these props in the "unrendered" state
const updateOnPropsForUnrendered = ['id', 'index', 'listLength', 'cachedHeight'];
export default class IntersectionObserverArticle extends React.Component {
export default class IntersectionObserverArticle extends ImmutablePureComponent {
static propTypes = {
intersectionObserverWrapper: PropTypes.object.isRequired,
@ -27,15 +22,18 @@ export default class IntersectionObserverArticle extends React.Component {
}
shouldComponentUpdate (nextProps, nextState) {
const isUnrendered = !this.state.isIntersecting && (this.state.isHidden || this.props.cachedHeight);
const willBeUnrendered = !nextState.isIntersecting && (nextState.isHidden || nextProps.cachedHeight);
if (!!isUnrendered !== !!willBeUnrendered) {
// If we're going from rendered to unrendered (or vice versa) then update
if (!nextState.isIntersecting && nextState.isHidden) {
// It's only if we're not intersecting (i.e. offscreen) and isHidden is true
// that either "isIntersecting" or "isHidden" matter, and then they're
// the only things that matter (and updated ARIA attributes).
return this.state.isIntersecting || !this.state.isHidden || nextProps.listLength !== this.props.listLength;
} else if (nextState.isIntersecting && !this.state.isIntersecting) {
// If we're going from a non-intersecting state to an intersecting state,
// (i.e. offscreen to onscreen), then we definitely need to re-render
return true;
}
// Otherwise, diff based on props
const propsToDiff = isUnrendered ? updateOnPropsForUnrendered : updateOnPropsForRendered;
return !propsToDiff.every(prop => is(nextProps[prop], this.props[prop]));
// Otherwise, diff based on "updateOnProps" and "updateOnStates"
return super.shouldComponentUpdate(nextProps, nextState);
}
componentDidMount () {