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import { colors } from '@0x/react-shared';
import { BigNumber } from '@0x/utils';
import * as _ from 'lodash';
import Dialog from 'material-ui/Dialog';
import FlatButton from 'material-ui/FlatButton';
import * as React from 'react';
import { Blockchain } from 'ts/blockchain';
import { TokenAmountInput } from 'ts/components/inputs/token_amount_input';
import { EthAmountInput } from 'ts/containers/inputs/eth_amount_input';
import { Side, Token } from 'ts/types';
interface EthWethConversionDialogProps {
blockchain: Blockchain;
userAddress: string;
networkId: number;
direction: Side;
onComplete: (direction: Side, value: BigNumber) => void;
onCancelled: () => void;
isOpen: boolean;
token: Token;
etherBalanceInWei?: BigNumber;
lastForceTokenStateRefetch: number;
}
interface EthWethConversionDialogState {
value?: BigNumber;
shouldShowIncompleteErrs: boolean;
hasErrors: boolean;
isEthTokenBalanceLoaded: boolean;
ethTokenBalance: BigNumber;
}
export class EthWethConversionDialog extends React.Component<
EthWethConversionDialogProps,
EthWethConversionDialogState
> {
private _isUnmounted: boolean;
constructor(props: EthWethConversionDialogProps) {
super(props);
this._isUnmounted = false;
this.state = {
shouldShowIncompleteErrs: false,
hasErrors: false,
isEthTokenBalanceLoaded: false,
ethTokenBalance: new BigNumber(0),
};
}
public componentWillMount(): void {
// tslint:disable-next-line:no-floating-promises
this._fetchEthTokenBalanceAsync();
}
public componentWillUnmount(): void {
this._isUnmounted = true;
}
public render(): React.ReactNode {
const convertDialogActions = [
<FlatButton key="cancel" label="Cancel" onClick={this._onCancel.bind(this)} />,
<FlatButton key="convert" label="Convert" primary={true} onClick={this._onConvertClick.bind(this)} />,
];
const title = this.props.direction === Side.Deposit ? 'Wrap ETH' : 'Unwrap WETH';
return !_.isUndefined(this.props.etherBalanceInWei) ? (
<Dialog
title={title}
titleStyle={{ fontWeight: 100 }}
actions={convertDialogActions}
contentStyle={{ width: 448 }}
open={this.props.isOpen}
>
{this._renderConversionDialogBody()}
</Dialog>
) : null;
}
private _renderConversionDialogBody(): React.ReactNode {
const explanation =
this.props.direction === Side.Deposit
? 'Convert your Ether into a tokenized, tradable form.'
: "Convert your Wrapped Ether back into it's native form.";
const isWrappedVersion = this.props.direction === Side.Receive;
return (
<div>
<div className="pb2">{explanation}</div>
<div className="mx-auto" style={{ maxWidth: 312 }}>
<div className="flex">
{this._renderCurrency(isWrappedVersion)}
<div style={{ paddingTop: 68 }}>
<i style={{ fontSize: 28, color: colors.darkBlue }} className="zmdi zmdi-arrow-right" />
</div>
{this._renderCurrency(!isWrappedVersion)}
</div>
<div className="pt2 mx-auto" style={{ width: 245 }}>
{this.props.direction === Side.Receive ? (
<TokenAmountInput
lastForceTokenStateRefetch={this.props.lastForceTokenStateRefetch}
blockchain={this.props.blockchain}
userAddress={this.props.userAddress}
networkId={this.props.networkId}
token={this.props.token}
shouldShowIncompleteErrs={this.state.shouldShowIncompleteErrs}
shouldCheckBalance={true}
shouldCheckAllowance={false}
onChange={this._onValueChange.bind(this)}
amount={this.state.value}
/>
) : (
<EthAmountInput
amount={this.state.value}
onChange={this._onValueChange.bind(this)}
shouldCheckBalance={true}
shouldShowIncompleteErrs={this.state.shouldShowIncompleteErrs}
/>
)}
<div className="pt1" style={{ fontSize: 12 }}>
<div className="left">1 ETH = 1 WETH</div>
{this.props.direction === Side.Receive && this.state.isEthTokenBalanceLoaded && (
<div
className="right"
onClick={this._onMaxClick.bind(this)}
style={{
color: colors.darkBlue,
textDecoration: 'underline',
cursor: 'pointer',
}}
>
Max
</div>
)}
</div>
</div>
</div>
</div>
);
}
private _renderCurrency(isWrappedVersion: boolean): React.ReactNode {
const name = isWrappedVersion ? 'Wrapped Ether' : 'Ether';
const iconUrl = isWrappedVersion ? '/images/token_icons/ether_erc20.png' : '/images/ether.png';
const symbol = isWrappedVersion ? 'WETH' : 'ETH';
return (
<div className="mx-auto pt2">
<div className="center" style={{ color: colors.darkBlue }}>
{name}
</div>
<div className="center py2">
<img src={iconUrl} style={{ width: 60 }} />
</div>
<div className="center" style={{ fontSize: 12 }}>
({symbol})
</div>
</div>
);
}
private _onMaxClick(): void {
this.setState({
value: this.state.ethTokenBalance,
});
}
private _onValueChange(isValid: boolean, amount?: BigNumber): void {
this.setState({
value: amount,
hasErrors: !isValid,
});
}
private _onConvertClick(): void {
if (this.state.hasErrors) {
this.setState({
shouldShowIncompleteErrs: true,
});
} else {
const value = this.state.value;
this.setState({
value: undefined,
});
this.props.onComplete(this.props.direction, value);
}
}
private _onCancel(): void {
this.setState({
value: undefined,
});
this.props.onCancelled();
}
private async _fetchEthTokenBalanceAsync(): Promise<void> {
const userAddressIfExists = _.isEmpty(this.props.userAddress) ? undefined : this.props.userAddress;
const [balance] = await this.props.blockchain.getTokenBalanceAndAllowanceAsync(
userAddressIfExists,
this.props.token.address,
);
if (!this._isUnmounted) {
this.setState({
isEthTokenBalanceLoaded: true,
ethTokenBalance: balance,
});
}
}
}
|
