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import React from 'react';
import { connect } from 'react-redux';
import PropTypes from 'prop-types';
import ImmutablePropTypes from 'react-immutable-proptypes';
import Column from '../../components/column';
import ColumnHeader from '../../components/column_header';
import {
enterNotificationClearingMode,
expandNotifications,
scrollTopNotifications,
} from '../../actions/notifications';
import { addColumn, removeColumn, moveColumn } from '../../actions/columns';
import NotificationContainer from '../../../glitch/components/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 { List as ImmutableList } from 'immutable';
import LoadMore from '../../components/load_more';
import { debounce } from 'lodash';
const messages = defineMessages({
title: { id: 'column.notifications', defaultMessage: 'Notifications' },
});
const getNotifications = createSelector([
state => ImmutableList(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),
localSettings: state.get('local_settings'),
isLoading: state.getIn(['notifications', 'isLoading'], true),
isUnread: state.getIn(['notifications', 'unread']) > 0,
hasMore: !!state.getIn(['notifications', 'next']),
notifCleaningActive: state.getIn(['notifications', 'cleaningMode']),
});
/* glitch */
const mapDispatchToProps = dispatch => ({
onEnterCleaningMode(yes) {
dispatch(enterNotificationClearingMode(yes));
},
dispatch,
});
@connect(mapStateToProps, mapDispatchToProps)
@injectIntl
export default class Notifications extends React.PureComponent {
static propTypes = {
columnId: PropTypes.string,
notifications: ImmutablePropTypes.list.isRequired,
dispatch: PropTypes.func.isRequired,
shouldUpdateScroll: PropTypes.func,
intl: PropTypes.object.isRequired,
isLoading: PropTypes.bool,
isUnread: PropTypes.bool,
multiColumn: PropTypes.bool,
hasMore: PropTypes.bool,
localSettings: ImmutablePropTypes.map,
notifCleaningActive: PropTypes.bool,
onEnterCleaningMode: PropTypes.func,
};
static defaultProps = {
trackScroll: true,
};
dispatchExpandNotifications = debounce(() => {
this.props.dispatch(expandNotifications());
}, 300, { leading: true });
dispatchScrollToTop = debounce((top) => {
this.props.dispatch(scrollTopNotifications(top));
}, 100);
handleScroll = (e) => {
const { scrollTop, scrollHeight, clientHeight } = e.target;
const offset = scrollHeight - scrollTop - clientHeight;
this._oldScrollPosition = scrollHeight - scrollTop;
if (250 > offset && this.props.hasMore && !this.props.isLoading) {
this.dispatchExpandNotifications();
}
if (scrollTop < 100) {
this.dispatchScrollToTop(true);
} else {
this.dispatchScrollToTop(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.dispatchExpandNotifications();
}
handlePin = () => {
const { columnId, dispatch } = this.props;
if (columnId) {
dispatch(removeColumn(columnId));
} else {
dispatch(addColumn('NOTIFICATIONS', {}));
}
}
handleMove = (dir) => {
const { columnId, dispatch } = this.props;
dispatch(moveColumn(columnId, dir));
}
handleHeaderClick = () => {
this.column.scrollTop();
}
setRef = (c) => {
this.node = c;
}
setColumnRef = c => {
this.column = c;
}
render () {
const { intl, notifications, shouldUpdateScroll, isLoading, isUnread, columnId, multiColumn, hasMore } = this.props;
const pinned = !!columnId;
let loadMore = '';
let scrollableArea = '';
let unread = '';
let scrollContainer = '';
if (!isLoading && hasMore) {
loadMore = <LoadMore onClick={this.handleLoadMore} />;
}
if (isUnread) {
unread = <div className='notifications__unread-indicator' />;
}
if (isLoading && this.scrollableArea) {
scrollableArea = this.scrollableArea;
} else if (notifications.size > 0 || hasMore) {
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>
);
}
if (pinned) {
scrollContainer = scrollableArea;
} else {
scrollContainer = (
<ScrollContainer scrollKey={`notifications-${columnId}`} shouldUpdateScroll={shouldUpdateScroll}>
{scrollableArea}
</ScrollContainer>
);
}
this.scrollableArea = scrollableArea;
return (
<Column
ref={this.setColumnRef}
extraClasses={this.props.notifCleaningActive ? 'notif-cleaning' : null}
>
<ColumnHeader
icon='bell'
active={isUnread}
title={intl.formatMessage(messages.title)}
onPin={this.handlePin}
onMove={this.handleMove}
onClick={this.handleHeaderClick}
pinned={pinned}
multiColumn={multiColumn}
localSettings={this.props.localSettings}
notifCleaning
notifCleaningActive={this.props.notifCleaningActive} // this is used to toggle the header text
onEnterCleaningMode={this.props.onEnterCleaningMode}
>
<ColumnSettingsContainer />
</ColumnHeader>
{scrollContainer}
</Column>
);
}
}
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