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update range when items size changes

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This commit is contained in:
Bruno Windels 2019-02-13 20:21:17 +01:00
parent e439d36805
commit a1a82e48d9
1 changed files with 7 additions and 2 deletions
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9
src/components/views/elements/LazyRenderList.js
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@ -62,8 +62,13 @@ export default class LazyRenderList extends React.Component {
componentWillReceiveProps(props) {
const state = this.state;
const range = LazyRenderList.getVisibleRangeFromProps(props);
// only update state if the new range isn't contained by the old anymore
if (!state.renderRange || !state.renderRange.contains(range.expand(OVERFLOW_MARGIN))) {
const intersectRange = range.expand(OVERFLOW_MARGIN);
const prevSize = this.props.items ? this.props.items.length : 0;
const listHasChangedSize = props.items.length !== prevSize;
// only update renderRange if the list has shrunk/grown and we need to adjust padding or
// if the new range isn't contained by the old anymore
if (listHasChangedSize || !state.renderRange || !state.renderRange.contains(intersectRange)) {
this.setState({renderRange: range.expand(OVERFLOW_ITEMS)});
}
}