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import Status from './status';
import ImmutablePropTypes from 'react-immutable-proptypes';
import PureRenderMixin from 'react-addons-pure-render-mixin';
import { ScrollContainer } from 'react-router-scroll';
import StatusContainer from '../containers/status_container';
const StatusList = React.createClass({
propTypes: {
statusIds: ImmutablePropTypes.list.isRequired,
onScrollToBottom: React.PropTypes.func,
onScrollToTop: React.PropTypes.func,
onScroll: React.PropTypes.func,
trackScroll: React.PropTypes.bool
},
getDefaultProps () {
return {
trackScroll: true
};
},
mixins: [PureRenderMixin],
handleScroll (e) {
const { scrollTop, scrollHeight, clientHeight } = e.target;
this._oldScrollPosition = scrollHeight - scrollTop;
if (scrollTop === scrollHeight - clientHeight && this.props.onScrollToBottom) {
this.props.onScrollToBottom();
} else if (scrollTop < 100 && this.props.onScrollToTop) {
this.props.onScrollToTop();
} else if (this.props.onScroll) {
this.props.onScroll();
}
},
componentDidUpdate (prevProps) {
if (prevProps.statusIds.size < this.props.statusIds.size && prevProps.statusIds.first() !== this.props.statusIds.first() && this._oldScrollPosition) {
const node = ReactDOM.findDOMNode(this);
if (node.scrollTop > 0) {
node.scrollTop = node.scrollHeight - this._oldScrollPosition;
}
}
},
render () {
const { statusIds, onScrollToBottom, trackScroll } = this.props;
const scrollableArea = (
<div className='scrollable' onScroll={this.handleScroll}>
<div>
{statusIds.map((statusId) => {
return <StatusContainer key={statusId} id={statusId} />;
})}
</div>
</div>
);
if (trackScroll) {
return (
<ScrollContainer scrollKey='status-list'>
{scrollableArea}
</ScrollContainer>
);
} else {
return scrollableArea;
}
}
});
export default StatusList;
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