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import React, { Component } from 'react';
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import PropTypes from 'prop-types';
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import ethUtil from 'ethereumjs-util';
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import { checkExistingAddresses } from '../../helpers/utils/util';
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import { tokenInfoGetter } from '../../helpers/utils/token-util';
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import { CONFIRM_ADD_TOKEN_ROUTE } from '../../helpers/constants/routes';
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import TextField from '../../components/ui/text-field';
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import PageContainer from '../../components/ui/page-container';
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import { Tabs, Tab } from '../../components/ui/tabs';
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import { addHexPrefix } from '../../../../app/scripts/lib/util';
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import TokenList from './token-list';
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import TokenSearch from './token-search';
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const emptyAddr = '0x0000000000000000000000000000000000000000';
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const MIN_DECIMAL_VALUE = 0;
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const MAX_DECIMAL_VALUE = 36;
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class AddToken extends Component {
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static contextTypes = {
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t: PropTypes.func,
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};
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static propTypes = {
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history: PropTypes.object,
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setPendingTokens: PropTypes.func,
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pendingTokens: PropTypes.object,
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clearPendingTokens: PropTypes.func,
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tokens: PropTypes.array,
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identities: PropTypes.object,
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showSearchTab: PropTypes.bool.isRequired,
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mostRecentOverviewPage: PropTypes.string.isRequired,
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};
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state = {
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customAddress: '',
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customSymbol: '',
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customDecimals: 0,
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searchResults: [],
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selectedTokens: {},
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tokenSelectorError: null,
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customAddressError: null,
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customSymbolError: null,
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customDecimalsError: null,
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autoFilled: false,
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forceEditSymbol: false,
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};
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componentDidMount() {
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this.tokenInfoGetter = tokenInfoGetter();
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const { pendingTokens = {} } = this.props;
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const pendingTokenKeys = Object.keys(pendingTokens);
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if (pendingTokenKeys.length > 0) {
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let selectedTokens = {};
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let customToken = {};
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pendingTokenKeys.forEach((tokenAddress) => {
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const token = pendingTokens[tokenAddress];
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const { isCustom } = token;
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if (isCustom) {
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customToken = { ...token };
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} else {
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selectedTokens = { ...selectedTokens, [tokenAddress]: { ...token } };
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}
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});
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const {
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address: customAddress = '',
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symbol: customSymbol = '',
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decimals: customDecimals = 0,
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} = customToken;
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this.setState({
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selectedTokens,
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customAddress,
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customSymbol,
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customDecimals,
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});
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}
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}
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handleToggleToken(token) {
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const { address } = token;
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const { selectedTokens = {} } = this.state;
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const selectedTokensCopy = { ...selectedTokens };
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if (address in selectedTokensCopy) {
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delete selectedTokensCopy[address];
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} else {
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selectedTokensCopy[address] = token;
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}
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this.setState({
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selectedTokens: selectedTokensCopy,
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tokenSelectorError: null,
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});
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}
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hasError() {
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const {
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tokenSelectorError,
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customAddressError,
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customSymbolError,
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customDecimalsError,
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} = this.state;
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return (
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tokenSelectorError ||
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customAddressError ||
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customSymbolError ||
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customDecimalsError
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);
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}
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hasSelected() {
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const { customAddress = '', selectedTokens = {} } = this.state;
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return customAddress || Object.keys(selectedTokens).length > 0;
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}
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handleNext() {
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if (this.hasError()) {
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return;
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}
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if (!this.hasSelected()) {
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this.setState({ tokenSelectorError: this.context.t('mustSelectOne') });
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return;
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}
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const { setPendingTokens, history } = this.props;
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const {
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customAddress: address,
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customSymbol: symbol,
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customDecimals: decimals,
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selectedTokens,
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} = this.state;
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const customToken = {
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address,
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symbol,
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decimals,
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};
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setPendingTokens({ customToken, selectedTokens });
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history.push(CONFIRM_ADD_TOKEN_ROUTE);
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}
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async attemptToAutoFillTokenParams(address) {
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const { symbol = '', decimals = 0 } = await this.tokenInfoGetter(address);
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const autoFilled = Boolean(symbol && decimals);
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this.setState({ autoFilled });
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this.handleCustomSymbolChange(symbol || '');
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this.handleCustomDecimalsChange(decimals);
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}
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handleCustomAddressChange(value) {
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const customAddress = value.trim();
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this.setState({
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customAddress,
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customAddressError: null,
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tokenSelectorError: null,
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autoFilled: false,
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});
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const isValidAddress = ethUtil.isValidAddress(customAddress);
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const standardAddress = addHexPrefix(customAddress).toLowerCase();
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switch (true) {
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case !isValidAddress:
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this.setState({
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customAddressError: this.context.t('invalidAddress'),
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customSymbol: '',
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customDecimals: 0,
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customSymbolError: null,
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customDecimalsError: null,
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});
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break;
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case Boolean(this.props.identities[standardAddress]):
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this.setState({
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customAddressError: this.context.t('personalAddressDetected'),
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});
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break;
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case checkExistingAddresses(customAddress, this.props.tokens):
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this.setState({
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customAddressError: this.context.t('tokenAlreadyAdded'),
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});
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break;
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default:
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if (customAddress !== emptyAddr) {
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this.attemptToAutoFillTokenParams(customAddress);
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}
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}
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}
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handleCustomSymbolChange(value) {
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const customSymbol = value.trim();
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const symbolLength = customSymbol.length;
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let customSymbolError = null;
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if (symbolLength <= 0 || symbolLength >= 12) {
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customSymbolError = this.context.t('symbolBetweenZeroTwelve');
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}
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this.setState({ customSymbol, customSymbolError });
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}
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handleCustomDecimalsChange(value) {
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const customDecimals = value.trim();
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const validDecimals =
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customDecimals !== null &&
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customDecimals !== '' &&
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customDecimals >= MIN_DECIMAL_VALUE &&
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customDecimals <= MAX_DECIMAL_VALUE;
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let customDecimalsError = null;
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if (!validDecimals) {
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customDecimalsError = this.context.t('decimalsMustZerotoTen');
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}
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this.setState({ customDecimals, customDecimalsError });
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}
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renderCustomTokenForm() {
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const {
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customAddress,
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customSymbol,
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customDecimals,
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customAddressError,
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customSymbolError,
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customDecimalsError,
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autoFilled,
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forceEditSymbol,
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} = this.state;
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return (
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<div className="add-token__custom-token-form">
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<TextField
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id="custom-address"
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label={this.context.t('tokenContractAddress')}
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type="text"
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value={customAddress}
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onChange={(e) => this.handleCustomAddressChange(e.target.value)}
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error={customAddressError}
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fullWidth
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autoFocus
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margin="normal"
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/>
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<TextField
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id="custom-symbol"
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label={
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<div className="add-token__custom-symbol__label-wrapper">
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<span className="add-token__custom-symbol__label">
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{this.context.t('tokenSymbol')}
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</span>
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{autoFilled && !forceEditSymbol && (
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<div
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className="add-token__custom-symbol__edit"
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onClick={() => this.setState({ forceEditSymbol: true })}
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>
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{this.context.t('edit')}
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</div>
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)}
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</div>
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}
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type="text"
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value={customSymbol}
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onChange={(e) => this.handleCustomSymbolChange(e.target.value)}
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error={customSymbolError}
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fullWidth
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margin="normal"
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disabled={autoFilled && !forceEditSymbol}
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/>
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<TextField
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id="custom-decimals"
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label={this.context.t('decimal')}
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type="number"
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value={customDecimals}
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onChange={(e) => this.handleCustomDecimalsChange(e.target.value)}
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error={customDecimalsError}
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fullWidth
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margin="normal"
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disabled={autoFilled}
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min={MIN_DECIMAL_VALUE}
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max={MAX_DECIMAL_VALUE}
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/>
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</div>
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);
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}
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renderSearchToken() {
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const { tokenSelectorError, selectedTokens, searchResults } = this.state;
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return (
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<div className="add-token__search-token">
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<TokenSearch
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onSearch={({ results = [] }) =>
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this.setState({ searchResults: results })
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}
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error={tokenSelectorError}
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/>
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<div className="add-token__token-list">
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<TokenList
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results={searchResults}
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selectedTokens={selectedTokens}
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onToggleToken={(token) => this.handleToggleToken(token)}
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/>
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</div>
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</div>
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);
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}
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renderTabs() {
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const { showSearchTab } = this.props;
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const tabs = [];
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if (showSearchTab) {
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tabs.push(
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<Tab name={this.context.t('search')} key="search-tab">
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{this.renderSearchToken()}
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</Tab>,
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);
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}
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tabs.push(
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<Tab name={this.context.t('customToken')} key="custom-tab">
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{this.renderCustomTokenForm()}
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</Tab>,
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);
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return <Tabs>{tabs}</Tabs>;
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}
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render() {
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const { history, clearPendingTokens, mostRecentOverviewPage } = this.props;
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return (
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<PageContainer
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title={this.context.t('addTokens')}
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tabsComponent={this.renderTabs()}
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onSubmit={() => this.handleNext()}
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disabled={Boolean(this.hasError()) || !this.hasSelected()}
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onCancel={() => {
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clearPendingTokens();
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history.push(mostRecentOverviewPage);
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}}
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/>
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);
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}
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}
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export default AddToken;
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