openethereum/js/packages/dapp-account/Transfer/Details/tokenSelect.js

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// 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 BigNumber from 'bignumber.js';
import React, { Component } from 'react';
import PropTypes from 'prop-types';
import { connect } from 'react-redux';
import { isEqual } from 'lodash';
import { Dropdown, TokenImage } from '@parity/ui';
import styles from '../transfer.css';
class TokenSelect extends Component {
static contextTypes = {
api: PropTypes.object
};
static propTypes = {
onChange: PropTypes.func.isRequired,
balance: PropTypes.object.isRequired,
tokens: PropTypes.object.isRequired,
value: PropTypes.string.isRequired
};
componentWillMount () {
this.computeTokens();
}
componentWillReceiveProps (nextProps) {
const prevTokens = Object.keys(this.props.balance)
.map((tokenId) => `${tokenId}_${this.props.balance[tokenId].toNumber()}`);
const nextTokens = Object.keys(nextProps.balance)
.map((tokenId) => `${tokenId}_${nextProps.balance[tokenId].toNumber()}`);
if (!isEqual(prevTokens, nextTokens)) {
this.computeTokens(nextProps);
}
}
computeTokens (props = this.props) {
const { api } = this.context;
const { balance, tokens } = this.props;
const items = Object
.keys(balance)
.map((tokenId) => {
const token = tokens[tokenId];
const tokenValue = balance[tokenId];
const isEth = token.native;
if (!isEth && tokenValue.eq(0)) {
return null;
}
let value = 0;
if (isEth) {
value = api.util.fromWei(tokenValue).toFormat(3);
} else {
const format = token.format || 1;
const decimals = format === 1 ? 0 : Math.min(3, Math.floor(format / 10));
value = new BigNumber(tokenValue).div(format).toFormat(decimals);
}
const label = (
<div className={ styles.token }>
<TokenImage token={ token } />
<div className={ styles.tokenname }>
{ token.name }
</div>
<div className={ styles.tokenbalance }>
{ value }<small> { token.tag }</small>
</div>
</div>
);
return {
key: tokenId,
text: token.name,
value: token.id,
content: label
};
})
.filter((node) => node);
this.setState({ items });
}
render () {
const { onChange, value } = this.props;
const { items } = this.state;
return (
<Dropdown
className={ styles.tokenSelect }
label='type of token transfer'
hint='type of token to transfer'
value={ value }
onChange={ onChange }
options={ items }
/>
);
}
}
function mapStateToProps (state) {
const { tokens } = state;
return { tokens };
}
export default connect(
mapStateToProps,
null
)(TokenSelect);