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// Copyright (c) 2016-present Mattermost, Inc. All Rights Reserved.
// See License.txt for license information.
import React from 'react';
import PropTypes from 'prop-types';
import {postListScrollChange} from 'actions/global_actions.jsx';
import Reaction from 'components/post_view/reaction';
export default class ReactionListView extends React.PureComponent {
static propTypes = {
/**
* The post to render reactions for
*/
post: PropTypes.object.isRequired,
/**
* The reactions to render
*/
reactions: PropTypes.arrayOf(PropTypes.object),
/**
* The emojis for the different reactions
*/
emojis: PropTypes.object.isRequired,
actions: PropTypes.shape({
/**
* Function to get reactions for a post
*/
getReactionsForPost: PropTypes.func.isRequired
})
}
componentDidMount() {
if (this.props.post.has_reactions) {
this.props.actions.getReactionsForPost(this.props.post.id);
}
}
componentDidUpdate(prevProps) {
if (this.props.reactions !== prevProps.reactions) {
postListScrollChange();
}
}
render() {
if (!this.props.post.has_reactions || (this.props.reactions && this.props.reactions.length === 0)) {
return null;
}
const reactionsByName = new Map();
const emojiNames = [];
if (this.props.reactions) {
for (const reaction of this.props.reactions) {
const emojiName = reaction.emoji_name;
if (reactionsByName.has(emojiName)) {
reactionsByName.get(emojiName).push(reaction);
} else {
emojiNames.push(emojiName);
reactionsByName.set(emojiName, [reaction]);
}
}
}
const children = emojiNames.map((emojiName) => {
return (
<Reaction
key={emojiName}
post={this.props.post}
emojiName={emojiName}
reactions={reactionsByName.get(emojiName) || []}
emojis={this.props.emojis}
/>
);
});
return (
<div className='post-reaction-list'>
{children}
</div>
);
}
}
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