63 lines
1.3 KiB
JavaScript
63 lines
1.3 KiB
JavaScript
// @flow
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import { Component } from 'react';
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import { getParticipantById, hasRaisedHand } from '../../base/participants';
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export type Props = {
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/**
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* The participant id who we want to render the raised hand indicator
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* for.
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*/
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participantId: string,
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/**
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* True if the hand is raised for this participant.
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*/
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_raisedHand?: boolean
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}
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/**
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* Implements an abstract class for the RaisedHandIndicator component.
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*/
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export default class AbstractRaisedHandIndicator<P: Props>
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extends Component<P> {
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/**
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* Implements {@code Component#render}.
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*
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* @inheritdoc
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*/
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render() {
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if (!this.props._raisedHand) {
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return null;
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}
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return this._renderIndicator();
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}
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/**
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* Renders the platform specific indicator element.
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*
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* @returns {React$Element<*>}
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*/
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_renderIndicator: () => React$Element<*>;
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}
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/**
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* Maps part of the Redux state to the props of this component.
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*
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* @param {Object} state - The Redux state.
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* @param {Props} ownProps - The own props of the component.
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* @returns {Object}
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*/
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export function _mapStateToProps(state: Object, ownProps: Props): Object {
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const participant = getParticipantById(state, ownProps.participantId);
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return {
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_raisedHand: hasRaisedHand(participant)
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};
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}
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