108 lines
3.3 KiB
JavaScript
108 lines
3.3 KiB
JavaScript
|
import React, { Fragment, PureComponent } from 'react';
|
||
|
|
import { Tooltip, OverlayTrigger } from 'react-bootstrap';
|
||
|
|
import web3 from "Embark/web3"
|
||
|
|
import Toggle from 'react-toggle';
|
||
|
|
import { BigNumber } from './utils'
|
||
|
|
import "react-toggle/style.css";
|
||
|
|
|
||
|
|
// We set an allowance to be "unlimited" by setting it to
|
||
|
|
// it's maximum possible value -- namely, 2^256 - 1.
|
||
|
|
const unlimitedAllowance = new BigNumber(2).pow(256).sub(1);
|
||
|
|
const getDefaultAccount = () => web3.eth.defaultAccount;
|
||
|
|
const SUPPORTED_TOKENS = ['SNT'];
|
||
|
|
const commaize = (str) => Number(str).toLocaleString();
|
||
|
|
|
||
|
|
const balanceTooltip = (balance, approved) => (
|
||
|
|
<Tooltip id="balanceTooltip">
|
||
|
|
{`Your balance of ${commaize(balance)} is ${approved ? 'approved' : 'not approved'} for spending by the contract`}
|
||
|
|
</Tooltip>
|
||
|
|
);
|
||
|
|
|
||
|
|
class TokenHandle extends PureComponent {
|
||
|
|
constructor(props){
|
||
|
|
super(props);
|
||
|
|
this.state = { balance: 0, approved: 0 };
|
||
|
|
}
|
||
|
|
|
||
|
|
componentDidMount() {
|
||
|
|
setTimeout(() => {
|
||
|
|
this.getBalance();
|
||
|
|
this.getAllowance();
|
||
|
|
}, 1000)
|
||
|
|
}
|
||
|
|
|
||
|
|
getBalance = () => {
|
||
|
|
this.props.methods.balanceOf(getDefaultAccount())
|
||
|
|
.call()
|
||
|
|
.then(balance => { this.setState({ ...this.state, balance }) });
|
||
|
|
}
|
||
|
|
|
||
|
|
getAllowance = () => {
|
||
|
|
const { methods, spender } = this.props;
|
||
|
|
methods.allowance(getDefaultAccount(), spender)
|
||
|
|
.call()
|
||
|
|
.then(approved => {
|
||
|
|
this.setState({ ...this.state, approved })
|
||
|
|
})
|
||
|
|
}
|
||
|
|
|
||
|
|
toggleApproved = () => {
|
||
|
|
const { approved } = this.state;
|
||
|
|
const { methods: { approve }, spender } = this.props;
|
||
|
|
const isApproved = !!Number(approved);
|
||
|
|
let amountToApprove = isApproved ? 0 : unlimitedAllowance;
|
||
|
|
console.log("approve(\""+spender+"\",\"" +amountToApprove +"\")")
|
||
|
|
approve(
|
||
|
|
spender,
|
||
|
|
amountToApprove
|
||
|
|
)
|
||
|
|
.send()
|
||
|
|
.then(approval => {
|
||
|
|
const { events: { Approval: { returnValues: { _value, _amount } } } } = approval
|
||
|
|
console.log('value',_value, approval)
|
||
|
|
this.setState({ ...this.state, approved: _value || _amount })
|
||
|
|
}).catch(err => {
|
||
|
|
console.log("Approve failed: " + err);
|
||
|
|
})
|
||
|
|
}
|
||
|
|
|
||
|
|
render() {
|
||
|
|
const { symbol } = this.props;
|
||
|
|
const { balance, approved } = this.state;
|
||
|
|
const balanceTooltip = (
|
||
|
|
<Tooltip id="balanceTooltip">
|
||
|
|
{`Your balance of ${commaize(balance)} is ${approved ? 'approved' : 'not approved'} for spending by the contract`}
|
||
|
|
</Tooltip>
|
||
|
|
);
|
||
|
|
return (
|
||
|
|
<OverlayTrigger placement="top" overlay={balanceTooltip}>
|
||
|
|
<div style={{ display: 'flex' }}>
|
||
|
|
<Toggle
|
||
|
|
checked={!!Number(approved)}
|
||
|
|
name={symbol}
|
||
|
|
onChange={this.toggleApproved} />
|
||
|
|
<label style={{ margin: '2px 0px 0px 10px', fontWeight: 400 }}>{`${Number(balance).toLocaleString()} ${symbol.toUpperCase()}`}</label>
|
||
|
|
</div>
|
||
|
|
</OverlayTrigger>
|
||
|
|
)
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
const tooltip = (
|
||
|
|
<Tooltip id="tooltip">
|
||
|
|
Turn on permissions for a token to enable its use with the ENS subdomain registry.
|
||
|
|
</Tooltip>
|
||
|
|
);
|
||
|
|
|
||
|
|
const TokenPermissions = (props) => (
|
||
|
|
<Fragment>
|
||
|
|
<OverlayTrigger placement="right" overlay={tooltip}>
|
||
|
|
<h3>Token Permissions</h3>
|
||
|
|
</OverlayTrigger>
|
||
|
|
<hr/>
|
||
|
|
<TokenHandle {...props} />
|
||
|
|
</Fragment>
|
||
|
|
)
|
||
|
|
|
||
|
|
export default TokenPermissions;
|