/*
 * SonarQube
 * Copyright (C) 2009-2020 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 classNames from 'classnames';
import * as React from 'react';

interface Props {
  active: boolean;
  children: React.ReactNode;
  clickHandler: (index: number) => void;
  index: number;
}

export default class HeadingAnchor extends React.PureComponent<Props> {
  handleClick = (event: React.MouseEvent<HTMLAnchorElement>) => {
    event.stopPropagation();
    event.preventDefault();
    this.props.clickHandler(this.props.index);
  };

  render() {
    const { active, children, index } = this.props;
    return (
      <li>
        <a className={classNames({ active })} href={'#header-' + index} onClick={this.handleClick}>
          {children}
        </a>
      </li>
    );
  }
}
