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/*
* SonarQube
* Copyright (C) 2009-2017 SonarSource SA
* mailto:info AT sonarsource DOT com
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 3 of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program; if not, write to the Free Software Foundation,
* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
import * as React from 'react';
import * as classNames from 'classnames';
interface Props {
children?: JSX.Element | JSX.Element[];
className?: string;
loading?: boolean;
customSpinner?: JSX.Element;
timeout?: number;
}
interface State {
showSpinner: boolean;
}
export default class DeferredSpinner extends React.PureComponent<Props, State> {
timer: any;
static defaultProps = {
timeout: 100
};
state: State = { showSpinner: false };
componentDidMount() {
if (this.props.loading == null || this.props.loading === true) {
this.startTimer();
}
}
componentWillReceiveProps(nextProps: Props) {
if (this.props.loading === false && nextProps.loading === true) {
this.stopTimer();
this.startTimer();
}
if (this.props.loading === true && nextProps.loading === false) {
this.stopTimer();
this.setState({ showSpinner: false });
}
}
componentWillUnmount() {
this.stopTimer();
}
startTimer = () => {
this.timer = setTimeout(() => this.setState({ showSpinner: true }), this.props.timeout);
};
stopTimer = () => {
clearTimeout(this.timer);
};
render() {
if (this.state.showSpinner) {
return (
this.props.customSpinner || <i className={classNames('spinner', this.props.className)} />
);
}
return (this.props.children as JSX.Element) || null;
}
}
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