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mgabdev
2020-05-04 14:44:37 -04:00
parent 4cf0713b37
commit 498f163880
66 changed files with 1192 additions and 246 deletions
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34
app/javascript/gabsocial/components/intersection_observer_article.js
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@@ -45,21 +45,8 @@ class IntersectionObserverArticle extends React.Component {
}
state = {
isHidden: false, // set to true in requestIdleCallback to trigger un-render
}
shouldComponentUpdate(nextProps, nextState) {
const isUnrendered = !this.state.isIntersecting && (this.state.isHidden || this.props.cachedHeight);
const willBeUnrendered = !nextState.isIntersecting && (nextState.isHidden || nextProps.cachedHeight);
// If we're going from rendered to unrendered (or vice versa) then update
if (!!isUnrendered !== !!willBeUnrendered) {
return true;
}
// Otherwise, diff based on props
const propsToDiff = isUnrendered ? updateOnPropsForUnrendered : updateOnPropsForRendered;
return !propsToDiff.every(prop => is(nextProps[prop], this.props[prop]));
isIntersecting: false,
isHidden: true,
}
componentDidMount() {
@@ -81,6 +68,20 @@ class IntersectionObserverArticle extends React.Component {
this.componentMounted = false;
}
shouldComponentUpdate(nextProps, nextState) {
const isUnrendered = !this.state.isIntersecting && (this.state.isHidden || this.props.cachedHeight);
const willBeUnrendered = !nextState.isIntersecting && (nextState.isHidden || nextProps.cachedHeight);
// If we're going from rendered to unrendered (or vice versa) then update
if (!!isUnrendered !== !!willBeUnrendered) {
return true;
}
// Otherwise, diff based on props
const propsToDiff = isUnrendered ? updateOnPropsForUnrendered : updateOnPropsForRendered;
return !propsToDiff.every(prop => is(nextProps[prop], this.props[prop]));
}
handleIntersection = (entry) => {
this.entry = entry;
@@ -113,9 +114,6 @@ class IntersectionObserverArticle extends React.Component {
hideIfNotIntersecting = () => {
if (!this.componentMounted) return
// When the browser gets a chance, test if we're still not intersecting,
// and if so, set our isHidden to true to trigger an unrender. The point of
// this is to save DOM nodes and avoid using up too much memory.
this.setState((prevState) => ({ isHidden: !prevState.isIntersecting }))
}