104 lines
3.7 KiB
JavaScript
104 lines
3.7 KiB
JavaScript
import React, { Fragment, PureComponent } from 'react';
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import { connect } from 'react-redux';
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import web3 from "Embark/web3"
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import Toggle from 'react-toggle';
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import { BigNumber } from './utils'
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import "react-toggle/style.css";
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import CircularProgress from '@material-ui/core/CircularProgress';
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import Tooltip from '@material-ui/core/Tooltip';
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import FormLabel from '@material-ui/core/FormLabel';
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import FormControl from '@material-ui/core/FormControl';
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import FormGroup from '@material-ui/core/FormGroup';
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import FormControlLabel from '@material-ui/core/FormControlLabel';
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import FormHelperText from '@material-ui/core/FormHelperText';
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import Switch from '@material-ui/core/Switch';
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import { actions, getSNTAllowance } from '../../reducers/accounts';
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// We set an allowance to be "unlimited" by setting it to
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// it's maximum possible value -- namely, 2^256 - 1.
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const { fromWei } = web3.utils;
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const unlimitedAllowance = new BigNumber(2).pow(256).sub(1);
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const getDefaultAccount = () => web3.eth.defaultAccount;
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const SUPPORTED_TOKENS = ['SNT', 'STT'];
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const BALANCE_KEYS = { 'SNT': 'SNTBalance', 'STT': 'SNTBalance' };
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class TokenHandle extends PureComponent {
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constructor(props){
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super(props);
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this.state = {};
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}
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toggleApproved = () => {
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const { approved } = this.state;
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const { methods: { approve }, spender, receiveSntAllowance } = this.props;
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const isApproved = !!Number(approved);
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let amountToApprove = isApproved ? 0 : unlimitedAllowance;
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console.log("approve(\""+spender+"\",\"" +amountToApprove +"\")")
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this.setState({ updating: true });
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approve(
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spender,
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amountToApprove
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)
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.send()
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.then(approval => {
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const { events: { Approval: { returnValues: { _value } } } } = approval
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receiveSntAllowance(_value)
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this.setState({ ...this.state, updating: false })
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}).catch(err => {
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console.log("Approve failed: " + err);
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this.setState({ updating: false });
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})
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}
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render() {
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const { symbol, account, isLoading, mobile, SNTAllowance } = this.props;
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const { updating } = this.state;
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return (
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<Fragment>
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{!updating && !isLoading && !!account && <div>
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<FormControl component="fieldset">
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<FormLabel component="legend" style={{ textAlign: 'center' }}>Token Permissions</FormLabel>
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<FormGroup style={{ alignItems: 'center' }}>
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<FormControlLabel
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control={
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<Switch
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checked={!!Number(SNTAllowance)}
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onChange={this.toggleApproved}
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value={symbol}
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/>
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}
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label={`${Number(fromWei(account[BALANCE_KEYS[symbol]])).toLocaleString()} ${symbol}`}
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/>
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</FormGroup>
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<FormHelperText style={{ textAlign: 'center' }}>Registry needs permission to transfer SNT from your account prior to registration</FormHelperText>
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</FormControl>
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</div>}
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{isLoading || updating && <CircularProgress style={{ marginLeft: mobile ? '45%' : null }} />}
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</Fragment>
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)
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}
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}
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const TokenPermissions = (props) => (
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<Fragment>
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{!props.mobile && <Fragment>
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<Tooltip title="Turn on permissions for a token to enable its use with the ENS subdomain registry">
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<h3>Token Permissions</h3>
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</Tooltip>
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<hr/>
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</Fragment>}
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<TokenHandle {...props} />
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</Fragment>
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)
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const mapDispatchToProps = dispatch => ({
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receiveSntAllowance(amount) {
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dispatch(actions.receiveSntAllowance(amount));
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},
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});
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const mapStateToProps = state => ({
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SNTAllowance: getSNTAllowance(state),
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});
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export default connect(mapStateToProps, mapDispatchToProps)(TokenPermissions);
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