forked from treehouse/mastodon
127 lines
3.8 KiB
JavaScript
127 lines
3.8 KiB
JavaScript
import { debounce } from 'lodash';
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import React from 'react';
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import ImmutablePropTypes from 'react-immutable-proptypes';
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import PropTypes from 'prop-types';
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import StatusContainer from 'flavours/glitch/containers/status_container';
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import ImmutablePureComponent from 'react-immutable-pure-component';
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import LoadGap from './load_gap';
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import ScrollableList from './scrollable_list';
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import RegenerationIndicator from 'flavours/glitch/components/regeneration_indicator';
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export default class StatusList extends ImmutablePureComponent {
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static propTypes = {
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scrollKey: PropTypes.string.isRequired,
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statusIds: ImmutablePropTypes.list.isRequired,
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featuredStatusIds: ImmutablePropTypes.list,
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onLoadMore: PropTypes.func,
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onScrollToTop: PropTypes.func,
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onScroll: PropTypes.func,
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trackScroll: PropTypes.bool,
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shouldUpdateScroll: PropTypes.func,
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isLoading: PropTypes.bool,
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isPartial: PropTypes.bool,
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hasMore: PropTypes.bool,
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prepend: PropTypes.node,
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alwaysPrepend: PropTypes.bool,
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emptyMessage: PropTypes.node,
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timelineId: PropTypes.string.isRequired,
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};
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static defaultProps = {
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trackScroll: true,
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};
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getFeaturedStatusCount = () => {
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return this.props.featuredStatusIds ? this.props.featuredStatusIds.size : 0;
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}
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getCurrentStatusIndex = (id, featured) => {
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if (featured) {
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return this.props.featuredStatusIds.indexOf(id);
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} else {
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return this.props.statusIds.indexOf(id) + this.getFeaturedStatusCount();
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}
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}
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handleMoveUp = (id, featured) => {
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const elementIndex = this.getCurrentStatusIndex(id, featured) - 1;
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this._selectChild(elementIndex, true);
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}
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handleMoveDown = (id, featured) => {
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const elementIndex = this.getCurrentStatusIndex(id, featured) + 1;
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this._selectChild(elementIndex, false);
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}
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handleLoadOlder = debounce(() => {
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this.props.onLoadMore(this.props.statusIds.size > 0 ? this.props.statusIds.last() : undefined);
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}, 300, { leading: true })
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_selectChild (index, align_top) {
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const container = this.node.node;
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const element = container.querySelector(`article:nth-of-type(${index + 1}) .focusable`);
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if (element) {
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if (align_top && container.scrollTop > element.offsetTop) {
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element.scrollIntoView(true);
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} else if (!align_top && container.scrollTop + container.clientHeight < element.offsetTop + element.offsetHeight) {
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element.scrollIntoView(false);
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}
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element.focus();
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}
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}
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setRef = c => {
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this.node = c;
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}
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render () {
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const { statusIds, featuredStatusIds, onLoadMore, timelineId, ...other } = this.props;
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const { isLoading, isPartial } = other;
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if (isPartial) {
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return <RegenerationIndicator />;
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}
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let scrollableContent = (isLoading || statusIds.size > 0) ? (
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statusIds.map((statusId, index) => statusId === null ? (
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<LoadGap
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key={'gap:' + statusIds.get(index + 1)}
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disabled={isLoading}
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maxId={index > 0 ? statusIds.get(index - 1) : null}
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onClick={onLoadMore}
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/>
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) : (
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<StatusContainer
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key={statusId}
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id={statusId}
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onMoveUp={this.handleMoveUp}
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onMoveDown={this.handleMoveDown}
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contextType={timelineId}
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/>
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))
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) : null;
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if (scrollableContent && featuredStatusIds) {
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scrollableContent = featuredStatusIds.map(statusId => (
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<StatusContainer
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key={`f-${statusId}`}
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id={statusId}
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featured
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onMoveUp={this.handleMoveUp}
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onMoveDown={this.handleMoveDown}
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contextType={timelineId}
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/>
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)).concat(scrollableContent);
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}
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return (
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<ScrollableList {...other} showLoading={isLoading && statusIds.size === 0} onLoadMore={onLoadMore && this.handleLoadOlder} ref={this.setRef}>
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{scrollableContent}
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</ScrollableList>
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);
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}
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}
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