import { connect } from 'react-redux'; import PropTypes from 'prop-types'; import ImmutablePropTypes from 'react-immutable-proptypes'; import Column from '../ui/components/column'; import { expandNotifications, clearNotifications, scrollTopNotifications } from '../../actions/notifications'; import NotificationContainer from './containers/notification_container'; import { ScrollContainer } from 'react-router-scroll'; import { defineMessages, injectIntl, FormattedMessage } from 'react-intl'; import ColumnSettingsContainer from './containers/column_settings_container'; import { createSelector } from 'reselect'; import Immutable from 'immutable'; import LoadMore from '../../components/load_more'; import ClearColumnButton from './components/clear_column_button'; import { openModal } from '../../actions/modal'; const messages = defineMessages({ title: { id: 'column.notifications', defaultMessage: 'Notifications' }, clearMessage: { id: 'notifications.clear_confirmation', defaultMessage: 'Are you sure you want to permanently clear all your notifications?' }, clearConfirm: { id: 'notifications.clear', defaultMessage: 'Clear 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), isUnread: state.getIn(['notifications', 'unread']) > 0 }); class Notifications extends React.PureComponent { constructor (props, context) { super(props, context); this.handleScroll = this.handleScroll.bind(this); this.handleLoadMore = this.handleLoadMore.bind(this); this.handleClear = this.handleClear.bind(this); this.setRef = this.setRef.bind(this); } 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()); } else if (scrollTop < 100) { this.props.dispatch(scrollTopNotifications(true)); } else { this.props.dispatch(scrollTopNotifications(false)); } } 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()); } handleClear () { const { dispatch, intl } = this.props; dispatch(openModal('CONFIRM', { message: intl.formatMessage(messages.clearMessage), confirm: intl.formatMessage(messages.clearConfirm), onConfirm: () => dispatch(clearNotifications()) })); } setRef (c) { this.node = c; } render () { const { intl, notifications, shouldUpdateScroll, isLoading, isUnread } = this.props; let loadMore = ''; let scrollableArea = ''; let unread = ''; if (!isLoading && notifications.size > 0) { loadMore = <LoadMore onClick={this.handleLoadMore} />; } if (isUnread) { unread = <div className='notifications__unread-indicator' />; } if (isLoading || notifications.size > 0) { scrollableArea = ( <div className='scrollable' onScroll={this.handleScroll} ref={this.setRef}> {unread} <div> {notifications.map(item => <NotificationContainer key={item.get('id')} notification={item} accountId={item.get('account')} />)} {loadMore} </div> </div> ); } else { scrollableArea = ( <div className='empty-column-indicator' ref={this.setRef}> <FormattedMessage id='empty_column.notifications' defaultMessage="You don't have any notifications yet. Interact with others to start the conversation." /> </div> ); } return ( <Column icon='bell' active={isUnread} heading={intl.formatMessage(messages.title)}> <ColumnSettingsContainer /> <ClearColumnButton onClick={this.handleClear} /> <ScrollContainer scrollKey='notifications' shouldUpdateScroll={shouldUpdateScroll}> {scrollableArea} </ScrollContainer> </Column> ); } } Notifications.propTypes = { notifications: ImmutablePropTypes.list.isRequired, dispatch: PropTypes.func.isRequired, shouldUpdateScroll: PropTypes.func, intl: PropTypes.object.isRequired, isLoading: PropTypes.bool, isUnread: PropTypes.bool }; Notifications.defaultProps = { trackScroll: true }; export default connect(mapStateToProps)(injectIntl(Notifications));