56 lines
1.3 KiB
JavaScript
56 lines
1.3 KiB
JavaScript
/* @flow */
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import React, { Component } from 'react';
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import { connect } from 'react-redux';
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import { LoadingIndicator } from '../../../base/react';
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/**
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* The type of the React {@code Component} props of
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* {@link NetworkActivityIndicator}.
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*/
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type Props = {
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/**
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* Indicates whether there is network activity i.e. ongoing network
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* requests.
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*/
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_networkActivity: boolean
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};
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/**
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* The React {@code Component} which renders a progress indicator when there
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* are ongoing network requests.
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*/
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class NetworkActivityIndicator extends Component<Props> {
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/**
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* Implements React's {@link Component#render()}.
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*
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* @inheritdoc
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* @returns {ReactElement}
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*/
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render() {
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return this.props._networkActivity ? <LoadingIndicator /> : null;
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}
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}
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/**
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* Maps (parts of) the redux state to the React {@code Component} props of
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* {@code NetworkActivityIndicator}.
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*
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* @param {Object} state - The redux state.
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* @private
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* @returns {{
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* _networkActivity: boolean
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* }}
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*/
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function _mapStateToProps(state) {
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const { requests } = state['features/network-activity'];
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return {
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_networkActivity: Boolean(requests && requests.size)
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};
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}
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export default connect(_mapStateToProps)(NetworkActivityIndicator);
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