110 lines
2.7 KiB
JavaScript
110 lines
2.7 KiB
JavaScript
import Status from './status';
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import ImmutablePropTypes from 'react-immutable-proptypes';
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import PureRenderMixin from 'react-addons-pure-render-mixin';
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import { ScrollContainer } from 'react-router-scroll';
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import StatusContainer from '../containers/status_container';
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import LoadMore from './load_more';
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const StatusList = React.createClass({
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propTypes: {
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statusIds: ImmutablePropTypes.list.isRequired,
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onScrollToBottom: React.PropTypes.func,
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onScrollToTop: React.PropTypes.func,
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onScroll: React.PropTypes.func,
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trackScroll: React.PropTypes.bool,
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isLoading: React.PropTypes.bool,
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prepend: React.PropTypes.node
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},
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getDefaultProps () {
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return {
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trackScroll: true
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};
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},
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mixins: [PureRenderMixin],
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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.onScrollToBottom && !this.props.isLoading) {
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this.props.onScrollToBottom();
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} else if (scrollTop < 100 && this.props.onScrollToTop) {
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this.props.onScrollToTop();
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} else if (this.props.onScroll) {
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this.props.onScroll();
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}
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},
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componentDidMount () {
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this.attachScrollListener();
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},
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componentDidUpdate (prevProps) {
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if (this.node.scrollTop > 0 && (prevProps.statusIds.size < this.props.statusIds.size && prevProps.statusIds.first() !== this.props.statusIds.first() && !!this._oldScrollPosition)) {
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this.node.scrollTop = this.node.scrollHeight - this._oldScrollPosition;
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}
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},
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componentWillUnmount () {
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this.detachScrollListener();
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},
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attachScrollListener () {
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this.node.addEventListener('scroll', this.handleScroll);
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},
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detachScrollListener () {
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this.node.removeEventListener('scroll', this.handleScroll);
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},
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setRef (c) {
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this.node = c;
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},
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handleLoadMore (e) {
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e.preventDefault();
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this.props.onScrollToBottom();
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},
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render () {
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const { statusIds, onScrollToBottom, trackScroll, isLoading, prepend } = this.props;
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let loadMore = '';
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if (!isLoading && statusIds.size > 0) {
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loadMore = <LoadMore onClick={this.handleLoadMore} />;
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}
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const scrollableArea = (
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<div className='scrollable' ref={this.setRef}>
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<div>
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{prepend}
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{statusIds.map((statusId) => {
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return <StatusContainer key={statusId} id={statusId} />;
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})}
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{loadMore}
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</div>
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</div>
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);
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if (trackScroll) {
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return (
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<ScrollContainer scrollKey='status-list'>
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{scrollableArea}
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</ScrollContainer>
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);
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} else {
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return scrollableArea;
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}
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}
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});
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export default StatusList;
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