593 lines
		
	
	
		
			24 KiB
		
	
	
	
		
			TypeScript
		
	
	
	
	
	
			
		
		
	
	
			593 lines
		
	
	
		
			24 KiB
		
	
	
	
		
			TypeScript
		
	
	
	
	
	
import {
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    constants as sharedConstants,
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    EtherscanLinkSuffixes,
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    Styles,
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    utils as sharedUtils,
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} from '@0xproject/react-shared';
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import { BigNumber } from '@0xproject/utils';
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import { Web3Wrapper } from '@0xproject/web3-wrapper';
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import * as _ from 'lodash';
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import FlatButton from 'material-ui/FlatButton';
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import FloatingActionButton from 'material-ui/FloatingActionButton';
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import { ListItem } from 'material-ui/List';
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import ActionAccountBalanceWallet from 'material-ui/svg-icons/action/account-balance-wallet';
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import ContentAdd from 'material-ui/svg-icons/content/add';
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import ContentRemove from 'material-ui/svg-icons/content/remove';
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import NavigationArrowDownward from 'material-ui/svg-icons/navigation/arrow-downward';
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import NavigationArrowUpward from 'material-ui/svg-icons/navigation/arrow-upward';
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import Close from 'material-ui/svg-icons/navigation/close';
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import * as React from 'react';
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import { Link } from 'react-router-dom';
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import ReactTooltip = require('react-tooltip');
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import firstBy = require('thenby');
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import { Blockchain } from 'ts/blockchain';
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import { AllowanceToggle } from 'ts/components/inputs/allowance_toggle';
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import { IconButton } from 'ts/components/ui/icon_button';
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import { Identicon } from 'ts/components/ui/identicon';
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import { Island } from 'ts/components/ui/island';
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import { TokenIcon } from 'ts/components/ui/token_icon';
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import { WalletDisconnectedItem } from 'ts/components/wallet/wallet_disconnected_item';
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import { WrapEtherItem } from 'ts/components/wallet/wrap_ether_item';
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import { Dispatcher } from 'ts/redux/dispatcher';
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import { colors } from 'ts/style/colors';
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import { zIndex } from 'ts/style/z_index';
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import {
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    BalanceErrs,
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    BlockchainErrs,
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    ItemByAddress,
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    ProviderType,
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    ScreenWidths,
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    Side,
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    Token,
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    TokenByAddress,
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    TokenState,
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    TokenStateByAddress,
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    WebsitePaths,
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} from 'ts/types';
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import { backendClient } from 'ts/utils/backend_client';
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import { constants } from 'ts/utils/constants';
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import { utils } from 'ts/utils/utils';
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import { styles as walletItemStyles } from 'ts/utils/wallet_item_styles';
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export interface WalletProps {
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    userAddress: string;
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    networkId: number;
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    blockchain: Blockchain;
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    blockchainIsLoaded: boolean;
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    blockchainErr: BlockchainErrs;
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    dispatcher: Dispatcher;
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    tokenByAddress: TokenByAddress;
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    trackedTokens: Token[];
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    userEtherBalanceInWei: BigNumber;
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    lastForceTokenStateRefetch: number;
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    injectedProviderName: string;
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    providerType: ProviderType;
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    screenWidth: ScreenWidths;
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    location: Location;
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    onToggleLedgerDialog: () => void;
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    onAddToken: () => void;
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    onRemoveToken: () => void;
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}
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interface WalletState {
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    trackedTokenStateByAddress: TokenStateByAddress;
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    wrappedEtherDirection?: Side;
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    isHoveringSidebar: boolean;
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}
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interface AllowanceToggleConfig {
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    token: Token;
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    tokenState: TokenState;
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}
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interface AccessoryItemConfig {
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    wrappedEtherDirection?: Side;
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    allowanceToggleConfig?: AllowanceToggleConfig;
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}
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const styles: Styles = {
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    root: {
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        width: '100%',
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        zIndex: zIndex.aboveOverlay,
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        position: 'relative',
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    },
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    headerItemInnerDiv: {
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        paddingLeft: 65,
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    },
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    footerItemInnerDiv: {
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        paddingLeft: 24,
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        borderTopColor: colors.walletBorder,
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        borderTopStyle: 'solid',
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        borderWidth: 1,
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    },
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    borderedItem: {
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        borderBottomColor: colors.walletBorder,
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        borderBottomStyle: 'solid',
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        borderWidth: 1,
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    },
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    tokenItem: {
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        backgroundColor: colors.walletDefaultItemBackground,
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    },
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    amountLabel: {
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        fontWeight: 'bold',
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        color: colors.black,
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    },
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    valueLabel: {
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        color: colors.grey,
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        fontSize: 14,
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    },
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    paddedItem: {
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        paddingTop: 8,
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        paddingBottom: 8,
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    },
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    bodyInnerDiv: {
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        overflow: 'auto',
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        WebkitOverflowScrolling: 'touch',
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    },
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    manageYourWalletText: {
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        color: colors.mediumBlue,
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        fontWeight: 'bold',
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    },
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};
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const ETHER_ICON_PATH = '/images/ether.png';
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const ICON_DIMENSION = 24;
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const TOKEN_AMOUNT_DISPLAY_PRECISION = 3;
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const BODY_ITEM_KEY = 'BODY';
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const HEADER_ITEM_KEY = 'HEADER';
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const FOOTER_ITEM_KEY = 'FOOTER';
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const DISCONNECTED_ITEM_KEY = 'DISCONNECTED';
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const ETHER_ITEM_KEY = 'ETHER';
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const USD_DECIMAL_PLACES = 2;
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const NO_ALLOWANCE_TOGGLE_SPACE_WIDTH = 56;
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const ACCOUNT_PATH = `${WebsitePaths.Portal}/account`;
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export class Wallet extends React.Component<WalletProps, WalletState> {
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    private _isUnmounted: boolean;
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    constructor(props: WalletProps) {
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        super(props);
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        this._isUnmounted = false;
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        const trackedTokenAddresses = _.map(props.trackedTokens, token => token.address);
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        const initialTrackedTokenStateByAddress = this._getInitialTrackedTokenStateByAddress(trackedTokenAddresses);
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        this.state = {
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            trackedTokenStateByAddress: initialTrackedTokenStateByAddress,
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            wrappedEtherDirection: undefined,
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            isHoveringSidebar: false,
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        };
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    }
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    public componentWillMount(): void {
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        const trackedTokenAddresses = _.keys(this.state.trackedTokenStateByAddress);
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        // tslint:disable-next-line:no-floating-promises
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        this._fetchBalancesAndAllowancesAsync(trackedTokenAddresses);
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    }
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    public componentWillUnmount(): void {
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        this._isUnmounted = true;
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    }
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    public componentWillReceiveProps(nextProps: WalletProps): void {
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        if (
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            nextProps.userAddress !== this.props.userAddress ||
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            nextProps.networkId !== this.props.networkId ||
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            nextProps.lastForceTokenStateRefetch !== this.props.lastForceTokenStateRefetch
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        ) {
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            const trackedTokenAddresses = _.keys(this.state.trackedTokenStateByAddress);
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            // tslint:disable-next-line:no-floating-promises
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            this._fetchBalancesAndAllowancesAsync(trackedTokenAddresses);
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        }
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        if (!_.isEqual(nextProps.trackedTokens, this.props.trackedTokens)) {
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            const newTokens = _.difference(nextProps.trackedTokens, this.props.trackedTokens);
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            const newTokenAddresses = _.map(newTokens, token => token.address);
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            // Add placeholder entry for this token to the state, since fetching the
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            // balance/allowance is asynchronous
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            const trackedTokenStateByAddress = this.state.trackedTokenStateByAddress;
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            const initialTrackedTokenStateByAddress = this._getInitialTrackedTokenStateByAddress(newTokenAddresses);
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            _.assign(trackedTokenStateByAddress, initialTrackedTokenStateByAddress);
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            this.setState({
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                trackedTokenStateByAddress,
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            });
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            // Fetch the actual balance/allowance.
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            // tslint:disable-next-line:no-floating-promises
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            this._fetchBalancesAndAllowancesAsync(newTokenAddresses);
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        }
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    }
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    public render(): React.ReactNode {
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        const isReadyToRender = this.props.blockchainIsLoaded && this.props.blockchainErr === BlockchainErrs.NoError;
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        const isAddressAvailable = !_.isEmpty(this.props.userAddress);
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        return (
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            <Island className="flex flex-column wallet" style={styles.root}>
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                {isReadyToRender && isAddressAvailable
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                    ? _.concat(this._renderConnectedHeaderRows(), this._renderBody(), this._renderFooterRows())
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                    : _.concat(this._renderDisconnectedHeaderRows(), this._renderDisconnectedRows())}
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            </Island>
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        );
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    }
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    private _renderDisconnectedHeaderRows(): React.ReactElement<{}> {
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        const userAddress = this.props.userAddress;
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        const primaryText = 'wallet';
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        return (
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            <ListItem
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                key={HEADER_ITEM_KEY}
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                primaryText={primaryText.toUpperCase()}
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                leftIcon={<ActionAccountBalanceWallet color={colors.mediumBlue} />}
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                style={styles.paddedItem}
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                innerDivStyle={styles.headerItemInnerDiv}
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            />
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        );
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    }
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    private _renderDisconnectedRows(): React.ReactElement<{}> {
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        return (
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            <WalletDisconnectedItem
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                key={DISCONNECTED_ITEM_KEY}
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                providerType={this.props.providerType}
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                injectedProviderName={this.props.injectedProviderName}
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                onToggleLedgerDialog={this.props.onToggleLedgerDialog}
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            />
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        );
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    }
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    private _renderConnectedHeaderRows(): React.ReactElement<{}> {
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        const userAddress = this.props.userAddress;
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        const primaryText = utils.getAddressBeginAndEnd(userAddress);
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        return (
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            <Link key={HEADER_ITEM_KEY} to={ACCOUNT_PATH} style={{ textDecoration: 'none' }}>
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                <ListItem
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                    primaryText={primaryText}
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                    leftIcon={<Identicon address={userAddress} diameter={ICON_DIMENSION} />}
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                    style={{ ...styles.paddedItem, ...styles.borderedItem }}
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                    innerDivStyle={styles.headerItemInnerDiv}
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                />
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            </Link>
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        );
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    }
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    private _renderBody(): React.ReactElement<{}> {
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        const bodyStyle: React.CSSProperties = {
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            ...styles.bodyInnerDiv,
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            overflow: this.state.isHoveringSidebar ? 'auto' : 'hidden',
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            // TODO: make this completely responsive
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            maxHeight: this.props.screenWidth !== ScreenWidths.Sm ? 475 : undefined,
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        };
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        return (
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            <div
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                style={bodyStyle}
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                key={BODY_ITEM_KEY}
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                onMouseEnter={this._onSidebarHover.bind(this)}
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                onMouseLeave={this._onSidebarHoverOff.bind(this)}
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            >
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                {this._renderEthRows()}
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                {this._renderTokenRows()}
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            </div>
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        );
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    }
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    private _onSidebarHover(event: React.FormEvent<HTMLInputElement>): void {
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        this.setState({
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            isHoveringSidebar: true,
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        });
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    }
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    private _onSidebarHoverOff(): void {
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        this.setState({
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            isHoveringSidebar: false,
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        });
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    }
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    private _renderFooterRows(): React.ReactElement<{}> {
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        return (
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            <div key={FOOTER_ITEM_KEY}>
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                <ListItem
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                    primaryText={
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                        <div className="flex">
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                            <FloatingActionButton mini={true} zDepth={0} onClick={this.props.onAddToken}>
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                                <ContentAdd />
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                            </FloatingActionButton>
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                            <FloatingActionButton
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                                mini={true}
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                                zDepth={0}
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                                className="px1"
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                                onClick={this.props.onRemoveToken}
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                            >
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                                <ContentRemove />
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                            </FloatingActionButton>
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                            <div
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                                style={{
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                                    paddingLeft: 10,
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                                    position: 'relative',
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                                    top: '50%',
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                                    transform: 'translateY(33%)',
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                                }}
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                            >
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                                add/remove tokens
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                            </div>
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                        </div>
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                    }
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                    disabled={true}
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                    innerDivStyle={styles.footerItemInnerDiv}
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                    style={styles.borderedItem}
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                />
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                {this.props.location.pathname !== ACCOUNT_PATH && (
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                    <Link to={ACCOUNT_PATH} style={{ textDecoration: 'none' }}>
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                        <ListItem
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                            primaryText={
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                                <div className="flex right" style={styles.manageYourWalletText}>
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                                    {'manage your wallet'}
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                                </div>
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                                // https://github.com/palantir/tslint-react/issues/140
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                                // tslint:disable-next-line:jsx-curly-spacing
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                            }
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                            style={{ ...styles.paddedItem, ...styles.borderedItem }}
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                        />
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                    </Link>
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                )}
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            </div>
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        );
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    }
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    private _renderEthRows(): React.ReactNode {
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        const icon = <img style={{ width: ICON_DIMENSION, height: ICON_DIMENSION }} src={ETHER_ICON_PATH} />;
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        const primaryText = this._renderAmount(
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            this.props.userEtherBalanceInWei,
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            constants.DECIMAL_PLACES_ETH,
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            constants.ETHER_SYMBOL,
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        );
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        const etherToken = this._getEthToken();
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        const etherPrice = this.state.trackedTokenStateByAddress[etherToken.address].price;
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        const secondaryText = this._renderValue(
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            this.props.userEtherBalanceInWei,
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            constants.DECIMAL_PLACES_ETH,
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            etherPrice,
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        );
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        const accessoryItemConfig = {
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            wrappedEtherDirection: Side.Deposit,
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        };
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        const isInWrappedEtherState =
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            !_.isUndefined(this.state.wrappedEtherDirection) &&
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            this.state.wrappedEtherDirection === accessoryItemConfig.wrappedEtherDirection;
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        const style = isInWrappedEtherState
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            ? { ...walletItemStyles.focusedItem, ...styles.paddedItem }
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            : { ...styles.tokenItem, ...styles.borderedItem, ...styles.paddedItem };
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        const key = ETHER_ITEM_KEY;
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        return this._renderBalanceRow(key, icon, primaryText, secondaryText, accessoryItemConfig, 'eth-row');
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    }
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    private _renderTokenRows(): React.ReactNode {
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        const trackedTokens = this.props.trackedTokens;
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        const trackedTokensStartingWithEtherToken = trackedTokens.sort(
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            firstBy((t: Token) => t.symbol !== constants.ETHER_TOKEN_SYMBOL)
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                .thenBy((t: Token) => t.symbol !== constants.ZRX_TOKEN_SYMBOL)
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                .thenBy('address'),
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        );
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        return _.map(trackedTokensStartingWithEtherToken, this._renderTokenRow.bind(this));
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    }
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    private _renderTokenRow(token: Token, index: number): React.ReactNode {
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        const tokenState = this.state.trackedTokenStateByAddress[token.address];
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        const tokenLink = sharedUtils.getEtherScanLinkIfExists(
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            token.address,
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            this.props.networkId,
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            EtherscanLinkSuffixes.Address,
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        );
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        const icon = <TokenIcon token={token} diameter={ICON_DIMENSION} link={tokenLink} />;
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        const primaryText = this._renderAmount(tokenState.balance, token.decimals, token.symbol);
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        const secondaryText = this._renderValue(tokenState.balance, token.decimals, tokenState.price);
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        const isWeth = token.symbol === constants.ETHER_TOKEN_SYMBOL;
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        const wrappedEtherDirection = isWeth ? Side.Receive : undefined;
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        const accessoryItemConfig: AccessoryItemConfig = {
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            wrappedEtherDirection,
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            allowanceToggleConfig: {
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                token,
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                tokenState,
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            },
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        };
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        const key = token.address;
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        return this._renderBalanceRow(
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            key,
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            icon,
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            primaryText,
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            secondaryText,
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            accessoryItemConfig,
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            isWeth ? 'weth-row' : undefined,
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        );
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    }
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    private _renderBalanceRow(
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        key: string,
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        icon: React.ReactNode,
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        primaryText: React.ReactNode,
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        secondaryText: React.ReactNode,
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        accessoryItemConfig: AccessoryItemConfig,
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        className?: string,
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    ): React.ReactNode {
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        const shouldShowWrapEtherItem =
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            !_.isUndefined(this.state.wrappedEtherDirection) &&
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            this.state.wrappedEtherDirection === accessoryItemConfig.wrappedEtherDirection;
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        const style = shouldShowWrapEtherItem
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            ? { ...walletItemStyles.focusedItem, ...styles.paddedItem }
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            : { ...styles.tokenItem, ...styles.borderedItem, ...styles.paddedItem };
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        const etherToken = this._getEthToken();
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        return (
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            <div key={key} className={`flex flex-column ${className || ''}`}>
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                <div className="flex items-center" style={style}>
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                    <div className="px2">{icon}</div>
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                    <div className="flex-none pr2 pt2 pb2">
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                        {primaryText}
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                        {secondaryText}
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                    </div>
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                    <div className="flex-auto" />
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                    <div>{this._renderAccessoryItems(accessoryItemConfig)}</div>
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                </div>
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                {shouldShowWrapEtherItem && (
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						|
                    <WrapEtherItem
 | 
						|
                        userAddress={this.props.userAddress}
 | 
						|
                        networkId={this.props.networkId}
 | 
						|
                        blockchain={this.props.blockchain}
 | 
						|
                        dispatcher={this.props.dispatcher}
 | 
						|
                        userEtherBalanceInWei={this.props.userEtherBalanceInWei}
 | 
						|
                        direction={accessoryItemConfig.wrappedEtherDirection}
 | 
						|
                        etherToken={etherToken}
 | 
						|
                        lastForceTokenStateRefetch={this.props.lastForceTokenStateRefetch}
 | 
						|
                        onConversionSuccessful={this._closeWrappedEtherActionRow.bind(this)}
 | 
						|
                        refetchEthTokenStateAsync={this._refetchTokenStateAsync.bind(this, etherToken.address)}
 | 
						|
                    />
 | 
						|
                )}
 | 
						|
            </div>
 | 
						|
        );
 | 
						|
    }
 | 
						|
    private _renderAccessoryItems(config: AccessoryItemConfig): React.ReactElement<{}> {
 | 
						|
        const shouldShowWrappedEtherAction = !_.isUndefined(config.wrappedEtherDirection);
 | 
						|
        const shouldShowToggle = !_.isUndefined(config.allowanceToggleConfig);
 | 
						|
        // if we don't have a toggle, we still want some space to the right of the "wrap" button so that it aligns with
 | 
						|
        // the "unwrap" button in the row below
 | 
						|
        const toggle = shouldShowToggle ? (
 | 
						|
            this._renderAllowanceToggle(config.allowanceToggleConfig)
 | 
						|
        ) : (
 | 
						|
            <div style={{ width: NO_ALLOWANCE_TOGGLE_SPACE_WIDTH }} />
 | 
						|
        );
 | 
						|
        return (
 | 
						|
            <div className="flex items-center">
 | 
						|
                <div className="flex-auto">
 | 
						|
                    {shouldShowWrappedEtherAction && this._renderWrappedEtherButton(config.wrappedEtherDirection)}
 | 
						|
                </div>
 | 
						|
                <div className="flex-last pl2">{toggle}</div>
 | 
						|
            </div>
 | 
						|
        );
 | 
						|
    }
 | 
						|
    private _renderAllowanceToggle(config: AllowanceToggleConfig): React.ReactNode {
 | 
						|
        return (
 | 
						|
            <AllowanceToggle
 | 
						|
                networkId={this.props.networkId}
 | 
						|
                blockchain={this.props.blockchain}
 | 
						|
                dispatcher={this.props.dispatcher}
 | 
						|
                token={config.token}
 | 
						|
                tokenState={config.tokenState}
 | 
						|
                onErrorOccurred={_.noop} // TODO: Error handling
 | 
						|
                userAddress={this.props.userAddress}
 | 
						|
                isDisabled={!config.tokenState.isLoaded}
 | 
						|
                refetchTokenStateAsync={this._refetchTokenStateAsync.bind(this, config.token.address)}
 | 
						|
            />
 | 
						|
        );
 | 
						|
    }
 | 
						|
    private _renderAmount(amount: BigNumber, decimals: number, symbol: string): React.ReactNode {
 | 
						|
        const unitAmount = Web3Wrapper.toUnitAmount(amount, decimals);
 | 
						|
        const formattedAmount = unitAmount.toPrecision(TOKEN_AMOUNT_DISPLAY_PRECISION);
 | 
						|
        const result = `${formattedAmount} ${symbol}`;
 | 
						|
        return <div style={styles.amountLabel}>{result}</div>;
 | 
						|
    }
 | 
						|
    private _renderValue(amount: BigNumber, decimals: number, price?: BigNumber): React.ReactNode {
 | 
						|
        if (_.isUndefined(price)) {
 | 
						|
            return null;
 | 
						|
        }
 | 
						|
        const unitAmount = Web3Wrapper.toUnitAmount(amount, decimals);
 | 
						|
        const value = unitAmount.mul(price);
 | 
						|
        const formattedAmount = value.toFixed(USD_DECIMAL_PLACES);
 | 
						|
        const result = `$${formattedAmount}`;
 | 
						|
        return <div style={styles.valueLabel}>{result}</div>;
 | 
						|
    }
 | 
						|
    private _renderWrappedEtherButton(wrappedEtherDirection: Side): React.ReactNode {
 | 
						|
        const isWrappedEtherDirectionOpen = this.state.wrappedEtherDirection === wrappedEtherDirection;
 | 
						|
        let buttonLabel;
 | 
						|
        let buttonIconName;
 | 
						|
        if (isWrappedEtherDirectionOpen) {
 | 
						|
            buttonLabel = 'cancel';
 | 
						|
            buttonIconName = 'zmdi-close';
 | 
						|
        } else {
 | 
						|
            switch (wrappedEtherDirection) {
 | 
						|
                case Side.Deposit:
 | 
						|
                    buttonLabel = 'wrap';
 | 
						|
                    buttonIconName = 'zmdi-long-arrow-down';
 | 
						|
                    break;
 | 
						|
                case Side.Receive:
 | 
						|
                    buttonLabel = 'unwrap';
 | 
						|
                    buttonIconName = 'zmdi-long-arrow-up';
 | 
						|
                    break;
 | 
						|
                default:
 | 
						|
                    throw utils.spawnSwitchErr('wrappedEtherDirection', wrappedEtherDirection);
 | 
						|
            }
 | 
						|
        }
 | 
						|
        const onClick = isWrappedEtherDirectionOpen
 | 
						|
            ? this._closeWrappedEtherActionRow.bind(this)
 | 
						|
            : this._openWrappedEtherActionRow.bind(this, wrappedEtherDirection);
 | 
						|
        return (
 | 
						|
            <IconButton iconName={buttonIconName} labelText={buttonLabel} onClick={onClick} color={colors.mediumBlue} />
 | 
						|
        );
 | 
						|
    }
 | 
						|
    private _getInitialTrackedTokenStateByAddress(tokenAddresses: string[]): TokenStateByAddress {
 | 
						|
        const trackedTokenStateByAddress: TokenStateByAddress = {};
 | 
						|
        _.each(tokenAddresses, tokenAddress => {
 | 
						|
            trackedTokenStateByAddress[tokenAddress] = {
 | 
						|
                balance: new BigNumber(0),
 | 
						|
                allowance: new BigNumber(0),
 | 
						|
                isLoaded: false,
 | 
						|
            };
 | 
						|
        });
 | 
						|
        return trackedTokenStateByAddress;
 | 
						|
    }
 | 
						|
    private async _fetchBalancesAndAllowancesAsync(tokenAddresses: string[]): Promise<void> {
 | 
						|
        const balanceAndAllowanceTupleByAddress: ItemByAddress<BigNumber[]> = {};
 | 
						|
        const userAddressIfExists = _.isEmpty(this.props.userAddress) ? undefined : this.props.userAddress;
 | 
						|
        for (const tokenAddress of tokenAddresses) {
 | 
						|
            const balanceAndAllowanceTuple = await this.props.blockchain.getTokenBalanceAndAllowanceAsync(
 | 
						|
                userAddressIfExists,
 | 
						|
                tokenAddress,
 | 
						|
            );
 | 
						|
            balanceAndAllowanceTupleByAddress[tokenAddress] = balanceAndAllowanceTuple;
 | 
						|
        }
 | 
						|
        const priceByAddress = await this._getPriceByAddressAsync(tokenAddresses);
 | 
						|
        const trackedTokenStateByAddress = _.reduce(
 | 
						|
            tokenAddresses,
 | 
						|
            (acc, address) => {
 | 
						|
                const [balance, allowance] = balanceAndAllowanceTupleByAddress[address];
 | 
						|
                const priceIfExists = _.get(priceByAddress, address);
 | 
						|
                acc[address] = {
 | 
						|
                    balance,
 | 
						|
                    allowance,
 | 
						|
                    price: priceIfExists,
 | 
						|
                    isLoaded: true,
 | 
						|
                };
 | 
						|
                return acc;
 | 
						|
            },
 | 
						|
            this.state.trackedTokenStateByAddress,
 | 
						|
        );
 | 
						|
 | 
						|
        if (!this._isUnmounted) {
 | 
						|
            this.setState({
 | 
						|
                trackedTokenStateByAddress,
 | 
						|
            });
 | 
						|
        }
 | 
						|
    }
 | 
						|
    private async _refetchTokenStateAsync(tokenAddress: string): Promise<void> {
 | 
						|
        await this._fetchBalancesAndAllowancesAsync([tokenAddress]);
 | 
						|
    }
 | 
						|
    private async _getPriceByAddressAsync(tokenAddresses: string[]): Promise<ItemByAddress<BigNumber>> {
 | 
						|
        if (_.isEmpty(tokenAddresses)) {
 | 
						|
            return {};
 | 
						|
        }
 | 
						|
        // for each input token address, search for the corresponding symbol in this.props.tokenByAddress, if it exists
 | 
						|
        // create a mapping from existing symbols -> address
 | 
						|
        const tokenAddressBySymbol: { [symbol: string]: string } = {};
 | 
						|
        _.each(tokenAddresses, address => {
 | 
						|
            const tokenIfExists = _.get(this.props.tokenByAddress, address);
 | 
						|
            if (!_.isUndefined(tokenIfExists)) {
 | 
						|
                const symbol = tokenIfExists.symbol;
 | 
						|
                tokenAddressBySymbol[symbol] = address;
 | 
						|
            }
 | 
						|
        });
 | 
						|
        const tokenSymbols = _.keys(tokenAddressBySymbol);
 | 
						|
        try {
 | 
						|
            const priceBySymbol = await backendClient.getPriceInfoAsync(tokenSymbols);
 | 
						|
            const priceByAddress = _.mapKeys(priceBySymbol, (value, symbol) => _.get(tokenAddressBySymbol, symbol));
 | 
						|
            const result = _.mapValues(priceByAddress, price => {
 | 
						|
                const priceBigNumber = new BigNumber(price);
 | 
						|
                return priceBigNumber;
 | 
						|
            });
 | 
						|
            return result;
 | 
						|
        } catch (err) {
 | 
						|
            return {};
 | 
						|
        }
 | 
						|
    }
 | 
						|
    private _openWrappedEtherActionRow(wrappedEtherDirection: Side): void {
 | 
						|
        this.setState({
 | 
						|
            wrappedEtherDirection,
 | 
						|
        });
 | 
						|
    }
 | 
						|
    private _closeWrappedEtherActionRow(): void {
 | 
						|
        this.setState({
 | 
						|
            wrappedEtherDirection: undefined,
 | 
						|
        });
 | 
						|
    }
 | 
						|
    private _getEthToken(): Token {
 | 
						|
        return utils.getEthToken(this.props.tokenByAddress);
 | 
						|
    }
 | 
						|
} // tslint:disable:max-file-line-count
 |