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Do not call setState from unmounted component (#3853) 

Stop an executing task if the component already unmounted.
This commit is contained in:
alpaca-tc 2017-06-21 03:37:09 +09:00 committed by Eugen Rochko
parent eb832e88f4
commit 1fc6cb4997
1 changed files with 8 additions and 0 deletions
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8
app/javascript/mastodon/components/status.js
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@ -86,6 +86,8 @@ class Status extends ImmutablePureComponent {
this.node,
this.handleIntersection
);
this.componentMounted = true;
}
componentWillUnmount () {
@ -96,6 +98,8 @@ class Status extends ImmutablePureComponent {
}
this.props.intersectionObserverWrapper.unobserve(this.props.id, this.node);
this.componentMounted = false;
}
handleIntersection = (entry) => {
@ -116,6 +120,10 @@ class Status extends ImmutablePureComponent {
}
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.