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@ -10,6 +10,8 @@ import emojify from 'soapbox/features/emoji/emoji';
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import classNames from 'classnames';
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import { escape, throttle } from 'lodash';
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const scrollBottom = (elem) => elem.scrollHeight - elem.offsetHeight - elem.scrollTop;
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const makeEmojiMap = record => record.get('emojis', ImmutableList()).reduce((map, emoji) => {
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return map.set(`:${emoji.get('shortcode')}:`, emoji);
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}, ImmutableMap());
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@ -19,7 +21,7 @@ const mapStateToProps = (state, { chatMessageIds }) => ({
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chatMessages: chatMessageIds.reduce((acc, curr) => {
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const chatMessage = state.getIn(['chat_messages', curr]);
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return chatMessage ? acc.push(chatMessage) : acc;
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}, ImmutableList()).sort(),
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}, ImmutableList()).sort().reverse(),
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});
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export default @connect(mapStateToProps)
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@ -39,6 +41,10 @@ class ChatMessageList extends ImmutablePureComponent {
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chatMessages: ImmutableList(),
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}
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state = {
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isLoading: false,
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}
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scrollToBottom = () => {
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if (!this.messagesEnd) return;
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this.messagesEnd.scrollIntoView();
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@ -46,7 +52,6 @@ class ChatMessageList extends ImmutablePureComponent {
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setMessageEndRef = (el) => {
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this.messagesEnd = el;
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this.scrollToBottom();
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};
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getFormattedTimestamp = (chatMessage) => {
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@ -75,11 +80,19 @@ class ChatMessageList extends ImmutablePureComponent {
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}
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componentDidMount() {
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this.node.addEventListener('scroll', this.handleScroll);
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}
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componentDidUpdate(prevProps) {
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if (prevProps.chatMessages !== this.props.chatMessages)
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this.scrollToBottom();
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const oldCount = prevProps.chatMessages.count();
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const newCount = this.props.chatMessages.count();
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const isNearBottom = scrollBottom(this.node) < 150;
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const historyAdded = prevProps.chatMessages.getIn([-1, 'id']) !== this.props.chatMessages.getIn([-1, 'id']);
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if (oldCount !== newCount) {
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if (isNearBottom) this.scrollToBottom();
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if (historyAdded) this.setState({ isLoading: false });
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}
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}
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componentWillUnmount() {
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@ -87,13 +100,14 @@ class ChatMessageList extends ImmutablePureComponent {
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}
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handleLoadMore = () => {
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const { dispatch, chatId, chatMessageIds } = this.props;
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const maxId = chatMessageIds.last();
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const { dispatch, chatId, chatMessages } = this.props;
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const maxId = chatMessages.getIn([-1, 'id']);
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dispatch(fetchChatMessages(chatId, maxId));
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this.setState({ isLoading: true });
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}
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handleScroll = throttle(() => {
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if (this.node.scrollTop < 100) this.handleLoadMore();
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if (this.node.scrollTop < 150 && !this.state.isLoading) this.handleLoadMore();
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}, 150, {
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trailing: true,
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});
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@ -112,7 +126,6 @@ class ChatMessageList extends ImmutablePureComponent {
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setRef = (c) => {
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this.node = c;
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this.node.addEventListener('scroll', this.handleScroll);
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}
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render() {
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@ -120,6 +133,7 @@ class ChatMessageList extends ImmutablePureComponent {
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return (
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<div className='chat-messages' ref={this.setRef}>
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<div style={{ float: 'left', clear: 'both' }} ref={this.setMessageEndRef} />
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{chatMessages.map(chatMessage => (
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<div
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className={classNames('chat-message', {
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@ -136,7 +150,6 @@ class ChatMessageList extends ImmutablePureComponent {
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/>
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</div>
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))}
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<div style={{ float: 'left', clear: 'both' }} ref={this.setMessageEndRef} />
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</div>
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);
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}
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