packages/instant/src/components/payment_method_dropdown.tsx


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import { BigNumber } from '@0x/utils';
import * as copy from 'copy-to-clipboard';
import * as React from 'react';

import { Network } from '../types';
import { analytics } from '../util/analytics';
import { envUtil } from '../util/env';
import { etherscanUtil } from '../util/etherscan';
import { format } from '../util/format';

import { Dropdown, DropdownItemConfig } from './ui/dropdown';

export interface PaymentMethodDropdownProps {
    accountAddress: string;
    accountEthBalanceInWei?: BigNumber;
    network: Network;
}

export class PaymentMethodDropdown extends React.PureComponent<PaymentMethodDropdownProps> {
    public render(): React.ReactNode {
        const { accountAddress, accountEthBalanceInWei } = this.props;
        const value = format.ethAddress(accountAddress);
        const label = format.ethBaseUnitAmount(accountEthBalanceInWei, 4, '') as string;
        return (
            <Dropdown
                value={value}
                label={label}
                items={this._getDropdownItemConfigs()}
                onOpen={analytics.trackPaymentMethodDropdownOpened}
            />
        );
    }
    private readonly _getDropdownItemConfigs = (): DropdownItemConfig[] => {
        if (envUtil.isMobileOperatingSystem()) {
            return [];
        }
        const viewOnEtherscan = {
            text: 'View on Etherscan',
            onClick: this._handleEtherscanClick,
        };
        const copyAddressToClipboard = {
            text: 'Copy address to clipboard',
            onClick: this._handleCopyToClipboardClick,
        };
        return [viewOnEtherscan, copyAddressToClipboard];
    };
    private readonly _handleEtherscanClick = (): void => {
        analytics.trackPaymentMethodOpenedEtherscan();

        const { accountAddress, network } = this.props;
        const etherscanUrl = etherscanUtil.getEtherScanEthAddressIfExists(accountAddress, network);
        window.open(etherscanUrl, '_blank');
    };
    private readonly _handleCopyToClipboardClick = (): void => {
        analytics.trackPaymentMethodCopiedAddress();

        const { accountAddress } = this.props;
        copy(accountAddress);
    };
}