1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
|
import { AssetBuyer, AssetBuyerError, BuyQuote } from '@0x/asset-buyer';
import * as _ from 'lodash';
import * as React from 'react';
import { WEB_3_WRAPPER_TRANSACTION_FAILED_ERROR_MSG_PREFIX } from '../constants';
import { ColorOption } from '../style/theme';
import { ZeroExInstantError } from '../types';
import { getBestAddress } from '../util/address';
import { balanceUtil } from '../util/balance';
import { util } from '../util/util';
import { web3Wrapper } from '../util/web3_wrapper';
import { Button, Text } from './ui';
export interface BuyButtonProps {
buyQuote?: BuyQuote;
assetBuyer?: AssetBuyer;
onValidationPending: (buyQuote: BuyQuote) => void;
onValidationFail: (buyQuote: BuyQuote, errorMessage: AssetBuyerError | ZeroExInstantError) => void;
onSignatureDenied: (buyQuote: BuyQuote) => void;
onBuyProcessing: (buyQuote: BuyQuote, txHash: string) => void;
onBuySuccess: (buyQuote: BuyQuote, txHash: string) => void;
onBuyFailure: (buyQuote: BuyQuote, txHash: string) => void;
}
export class BuyButton extends React.Component<BuyButtonProps> {
public static defaultProps = {
onClick: util.boundNoop,
onBuySuccess: util.boundNoop,
onBuyFailure: util.boundNoop,
};
public render(): React.ReactNode {
const shouldDisableButton = _.isUndefined(this.props.buyQuote) || _.isUndefined(this.props.assetBuyer);
return (
<Button width="100%" onClick={this._handleClick} isDisabled={shouldDisableButton}>
<Text fontColor={ColorOption.white} fontWeight={600} fontSize="20px">
Buy
</Text>
</Button>
);
}
private readonly _handleClick = async () => {
// The button is disabled when there is no buy quote anyway.
const { buyQuote, assetBuyer } = this.props;
if (_.isUndefined(buyQuote) || _.isUndefined(assetBuyer)) {
return;
}
this.props.onValidationPending(buyQuote);
const takerAddress = await getBestAddress();
const hasSufficientEth = await balanceUtil.hasSufficientEth(takerAddress, buyQuote, web3Wrapper);
if (!hasSufficientEth) {
this.props.onValidationFail(buyQuote, ZeroExInstantError.InsufficientETH);
return;
}
let txHash: string | undefined;
try {
txHash = await assetBuyer.executeBuyQuoteAsync(buyQuote, { takerAddress });
} catch (e) {
if (e instanceof Error) {
if (e.message === AssetBuyerError.SignatureRequestDenied) {
this.props.onSignatureDenied(buyQuote);
return;
} else if (e.message === AssetBuyerError.TransactionValueTooLow) {
this.props.onValidationFail(buyQuote, AssetBuyerError.TransactionValueTooLow);
return;
}
}
throw e;
}
this.props.onBuyProcessing(buyQuote, txHash);
try {
await web3Wrapper.awaitTransactionSuccessAsync(txHash);
} catch (e) {
if (e instanceof Error && e.message.startsWith(WEB_3_WRAPPER_TRANSACTION_FAILED_ERROR_MSG_PREFIX)) {
this.props.onBuyFailure(buyQuote, txHash);
return;
}
throw e;
}
this.props.onBuySuccess(buyQuote, txHash);
};
}
|
