/* * SPDX-License-Identifier: Apache-2.0 * * The OpenSearch Contributors require contributions made to * this file be licensed under the Apache-2.0 license or a * compatible open source license. * * Any modifications Copyright OpenSearch Contributors. See * GitHub history for details. */ /* * Licensed to Elasticsearch B.V. under one or more contributor * license agreements. See the NOTICE file distributed with * this work for additional information regarding copyright * ownership. Elasticsearch B.V. licenses this file to you under * the Apache License, Version 2.0 (the "License"); you may * not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, * software distributed under the License is distributed on an * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY * KIND, either express or implied. See the License for the * specific language governing permissions and limitations * under the License. */ import { EuiLoadingSpinner, EuiProgress } from '@elastic/eui'; import { i18n } from '@osd/i18n'; import React from 'react'; import classNames from 'classnames'; import { Subscription } from 'rxjs'; import { HttpStart } from '../../http'; export interface LoadingIndicatorProps { loadingCount$: ReturnType<HttpStart['getLoadingCount$']>; showAsBar?: boolean; } export class LoadingIndicator extends React.Component<LoadingIndicatorProps, { visible: boolean }> { public static defaultProps = { showAsBar: false }; private loadingCountSubscription?: Subscription; state = { visible: false, }; componentDidMount() { this.loadingCountSubscription = this.props.loadingCount$.subscribe((count) => { this.setState({ visible: count > 0, }); }); } componentWillUnmount() { if (this.loadingCountSubscription) { this.loadingCountSubscription.unsubscribe(); this.loadingCountSubscription = undefined; } } render() { const className = classNames(!this.state.visible && 'osdLoadingIndicator-hidden'); const testSubj = this.state.visible ? 'globalLoadingIndicator' : 'globalLoadingIndicator-hidden'; const ariaHidden = this.state.visible ? false : true; const ariaLabel = i18n.translate('core.ui.loadingIndicatorAriaLabel', { defaultMessage: 'Loading content', }); return !this.props.showAsBar ? ( <EuiLoadingSpinner className={className} data-test-subj={testSubj} aria-hidden={ariaHidden} aria-label={ariaLabel} /> ) : ( <EuiProgress className={className} data-test-subj={testSubj} aria-hidden={ariaHidden} aria-label={ariaLabel} position="fixed" color="accent" size="xs" /> ); } }