Use debounce for dispatch scrollTopNotification and expandNotifications (#3700)
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1 changed files with 17 additions and 8 deletions
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@ -13,6 +13,7 @@ import ColumnSettingsContainer from './containers/column_settings_container';
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import { createSelector } from 'reselect';
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import Immutable from 'immutable';
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import LoadMore from '../../components/load_more';
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import { debounce } from 'lodash';
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const messages = defineMessages({
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title: { id: 'column.notifications', defaultMessage: 'Notifications' },
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@ -50,19 +51,27 @@ export default class Notifications extends React.PureComponent {
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trackScroll: true,
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};
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dispatchExpandNotifications = debounce(() => {
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this.props.dispatch(expandNotifications());
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}, 300, { leading: true });
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dispatchScrollToTop = debounce((top) => {
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this.props.dispatch(scrollTopNotifications(top));
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}, 100);
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handleScroll = (e) => {
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const { scrollTop, scrollHeight, clientHeight } = e.target;
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const offset = scrollHeight - scrollTop - clientHeight;
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this._oldScrollPosition = scrollHeight - scrollTop;
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if (250 > offset && !this.props.isLoading) {
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if (this.props.hasMore) {
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this.props.dispatch(expandNotifications());
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}
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} else if (scrollTop < 100) {
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this.props.dispatch(scrollTopNotifications(true));
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if (250 > offset && this.props.hasMore && !this.props.isLoading) {
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this.dispatchExpandNotifications();
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}
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if (scrollTop < 100) {
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this.dispatchScrollToTop(true);
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} else {
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this.props.dispatch(scrollTopNotifications(false));
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this.dispatchScrollToTop(false);
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}
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}
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@ -74,7 +83,7 @@ export default class Notifications extends React.PureComponent {
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handleLoadMore = (e) => {
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e.preventDefault();
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this.props.dispatch(expandNotifications());
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this.dispatchExpandNotifications();
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}
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handlePin = () => {
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