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import React from 'react';
import PropTypes from 'prop-types';
import ImmutablePropTypes from 'react-immutable-proptypes';
import ImmutablePureComponent from 'react-immutable-pure-component';
import ConversationContainer from '../containers/conversation_container';
import ScrollableList from 'flavours/glitch/components/scrollable_list';
import { debounce } from 'lodash';
export default class ConversationsList extends ImmutablePureComponent {
static propTypes = {
conversations: ImmutablePropTypes.list.isRequired,
scrollKey: PropTypes.string.isRequired,
hasMore: PropTypes.bool,
isLoading: PropTypes.bool,
onLoadMore: PropTypes.func,
};
getCurrentIndex = id => this.props.conversations.findIndex(x => x.get('id') === id);
handleMoveUp = id => {
const elementIndex = this.getCurrentIndex(id) - 1;
this._selectChild(elementIndex, true);
};
handleMoveDown = id => {
const elementIndex = this.getCurrentIndex(id) + 1;
this._selectChild(elementIndex, false);
};
_selectChild (index, align_top) {
const container = this.node.node;
const element = container.querySelector(`article:nth-of-type(${index + 1}) .focusable`);
if (element) {
if (align_top && container.scrollTop > element.offsetTop) {
element.scrollIntoView(true);
} else if (!align_top && container.scrollTop + container.clientHeight < element.offsetTop + element.offsetHeight) {
element.scrollIntoView(false);
}
element.focus();
}
}
setRef = c => {
this.node = c;
};
handleLoadOlder = debounce(() => {
const last = this.props.conversations.last();
if (last && last.get('last_status')) {
this.props.onLoadMore(last.get('last_status'));
}
}, 300, { leading: true });
render () {
const { conversations, isLoading, onLoadMore, ...other } = this.props;
return (
<ScrollableList {...other} isLoading={isLoading} showLoading={isLoading && conversations.isEmpty()} onLoadMore={onLoadMore && this.handleLoadOlder} ref={this.setRef}>
{conversations.map(item => (
<ConversationContainer
key={item.get('id')}
conversationId={item.get('id')}
onMoveUp={this.handleMoveUp}
onMoveDown={this.handleMoveDown}
scrollKey={this.props.scrollKey}
/>
))}
</ScrollableList>
);
}
}
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