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import { connect } from 'react-redux';
import PureRenderMixin from 'react-addons-pure-render-mixin';
import ImmutablePropTypes from 'react-immutable-proptypes';
import Column from '../ui/components/column';
import { expandNotifications } from '../../actions/notifications';
import NotificationContainer from './containers/notification_container';
import { ScrollContainer } from 'react-router-scroll';
import { defineMessages, injectIntl } from 'react-intl';
import ColumnSettingsContainer from './containers/column_settings_container';
import { createSelector } from 'reselect';
import Immutable from 'immutable';
import LoadMore from '../../components/load_more';
const messages = defineMessages({
title: { id: 'column.notifications', defaultMessage: 'Notifications' }
});
const getNotifications = createSelector([
state => Immutable.List(state.getIn(['settings', 'notifications', 'shows']).filter(item => !item).keys()),
state => state.getIn(['notifications', 'items'])
], (excludedTypes, notifications) => notifications.filterNot(item => excludedTypes.includes(item.get('type'))));
const mapStateToProps = state => ({
notifications: getNotifications(state),
isLoading: state.getIn(['notifications', 'isLoading'], true)
});
const Notifications = React.createClass({
propTypes: {
notifications: ImmutablePropTypes.list.isRequired,
dispatch: React.PropTypes.func.isRequired,
trackScroll: React.PropTypes.bool,
intl: React.PropTypes.object.isRequired,
isLoading: React.PropTypes.bool
},
getDefaultProps () {
return {
trackScroll: true
};
},
mixins: [PureRenderMixin],
handleScroll (e) {
const { scrollTop, scrollHeight, clientHeight } = e.target;
const offset = scrollHeight - scrollTop - clientHeight;
this._oldScrollPosition = scrollHeight - scrollTop;
if (250 > offset && !this.props.isLoading) {
this.props.dispatch(expandNotifications());
}
},
componentDidUpdate (prevProps) {
if (this.node.scrollTop > 0 && (prevProps.notifications.size < this.props.notifications.size && prevProps.notifications.first() !== this.props.notifications.first() && !!this._oldScrollPosition)) {
this.node.scrollTop = this.node.scrollHeight - this._oldScrollPosition;
}
},
handleLoadMore (e) {
e.preventDefault();
this.props.dispatch(expandNotifications());
},
setRef (c) {
this.node = c;
},
render () {
const { intl, notifications, trackScroll, isLoading } = this.props;
let loadMore = '';
if (!isLoading && notifications.size > 0) {
loadMore = <LoadMore onClick={this.handleLoadMore} />;
}
const scrollableArea = (
<div className='scrollable' onScroll={this.handleScroll} ref={this.setRef}>
<div>
{notifications.map(item => <NotificationContainer key={item.get('id')} notification={item} accountId={item.get('account')} />)}
{loadMore}
</div>
</div>
);
if (trackScroll) {
return (
<Column icon='bell' heading={intl.formatMessage(messages.title)}>
<ColumnSettingsContainer />
<ScrollContainer scrollKey='notifications'>
{scrollableArea}
</ScrollContainer>
</Column>
);
} else {
return (
<Column icon='bell' heading={intl.formatMessage(messages.title)}>
<ColumnSettingsContainer />
{scrollableArea}
</Column>
);
}
}
});
export default connect(mapStateToProps)(injectIntl(Notifications));
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