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user_banner_service.tsx
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user_banner_service.tsx
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/*
* Copyright Elasticsearch B.V. and/or licensed to Elasticsearch B.V. under one
* or more contributor license agreements. Licensed under the Elastic License
* 2.0 and the Server Side Public License, v 1; you may not use this file except
* in compliance with, at your election, the Elastic License 2.0 or the Server
* Side Public License, v 1.
*/
import React, { Fragment } from 'react';
import ReactDOM from 'react-dom';
import { filter } from 'rxjs/operators';
import { Subscription } from 'rxjs';
import { FormattedMessage } from '@kbn/i18n/react';
import { EuiCallOut, EuiButton, EuiLoadingSpinner } from '@elastic/eui';
import { I18nStart } from '../../i18n';
import { IUiSettingsClient } from '../../ui_settings';
import { OverlayBannersStart } from './banners_service';
interface StartDeps {
banners: OverlayBannersStart;
i18n: I18nStart;
uiSettings: IUiSettingsClient;
}
const ReactMarkdownLazy = React.lazy(() => import('react-markdown'));
/**
* Sets up the custom banner that can be specified in advanced settings.
* @internal
*/
export class UserBannerService {
private settingsSubscription?: Subscription;
public start({ banners, i18n, uiSettings }: StartDeps) {
let id: string | undefined;
let timeout: any;
const dismiss = () => {
banners.remove(id!);
clearTimeout(timeout);
};
const updateBanner = () => {
const content = uiSettings.get('notifications:banner');
const lifetime = uiSettings.get('notifications:lifetime:banner');
if (typeof content !== 'string' || content.length === 0 || typeof lifetime !== 'number') {
dismiss();
return;
}
id = banners.replace(
id,
(el) => {
ReactDOM.render(
<i18n.Context>
<EuiCallOut
title={
<FormattedMessage
id="core.ui.overlays.banner.attentionTitle"
defaultMessage="Attention"
/>
}
iconType="help"
>
<React.Suspense
fallback={
<div>
<EuiLoadingSpinner />
</div>
}
>
<ReactMarkdownLazy renderers={{ root: Fragment }} source={content.trim()} />
</React.Suspense>
<EuiButton type="primary" size="s" onClick={() => banners.remove(id!)}>
<FormattedMessage
id="core.ui.overlays.banner.closeButtonLabel"
defaultMessage="Close"
/>
</EuiButton>
</EuiCallOut>
</i18n.Context>,
el
);
timeout = setTimeout(dismiss, lifetime);
return () => ReactDOM.unmountComponentAtNode(el);
},
100
);
};
updateBanner();
this.settingsSubscription = uiSettings
.getUpdate$()
.pipe(
filter(
({ key }) => key === 'notifications:banner' || key === 'notifications:lifetime:banner'
)
)
.subscribe(() => updateBanner());
}
public stop() {
if (this.settingsSubscription) {
this.settingsSubscription.unsubscribe();
this.settingsSubscription = undefined;
}
}
}