openethereum/js/packages/ui/ShortenedHash/shortenedHash.js

// Copyright 2015-2017 Parity Technologies (UK) Ltd.
// This file is part of Parity.

// Parity is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.

// Parity 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 General Public License for more details.

// You should have received a copy of the GNU General Public License
// along with Parity.  If not, see <http://www.gnu.org/licenses/>.

import React from 'react';
import PropTypes from 'prop-types';

import styles from './shortenedHash.css';

export default function ShortenedHash ({ data }) {
  let shortened = data.toLowerCase();

  if (shortened.slice(0, 2) === '0x') {
    shortened = shortened.slice(2);
  }
  if (shortened.length > (6 + 6)) {
    shortened = shortened.slice(0, 6) + '…' + shortened.slice(-6);
  }

  return (
    <abbr className={ styles.hash } title={ data }>{ shortened }</abbr>
  );
}

ShortenedHash.propTypes = {
  data: PropTypes.string.isRequired
};