Initial Ledger support implementation

packages/website/package.json

@@ -8,9 +8,12 @@
         "clean": "shx rm -f public/bundle*",
         "lint": "tslint --project . 'ts/**/*.ts' 'ts/**/*.tsx'",
         "dev": "webpack-dev-server --content-base public --https",
-        "update_contracts": "for i in ${npm_package_config_artifacts}; do copyfiles -u 4 ../contracts/build/contracts/$i.json ../website/contracts; done;",
-        "deploy_staging": "npm run build; aws s3 sync ./public/. s3://staging-0xproject --profile 0xproject --region us-east-1 --grants read=uri=http://acs.amazonaws.com/groups/global/AllUsers",
-        "deploy_live": "npm run build; aws s3 sync ./public/. s3://0xproject.com --profile 0xproject --region us-east-1 --grants read=uri=http://acs.amazonaws.com/groups/global/AllUsers"
+        "update_contracts":
+            "for i in ${npm_package_config_artifacts}; do copyfiles -u 4 ../contracts/build/contracts/$i.json ../website/contracts; done;",
+        "deploy_staging":
+            "npm run build; aws s3 sync ./public/. s3://staging-0xproject --profile 0xproject --region us-east-1 --grants read=uri=http://acs.amazonaws.com/groups/global/AllUsers",
+        "deploy_live":
+            "npm run build; aws s3 sync ./public/. s3://0xproject.com --profile 0xproject --region us-east-1 --grants read=uri=http://acs.amazonaws.com/groups/global/AllUsers"
     },
     "config": {
         "artifacts": "Mintable"

packages/website/ts/blockchain.ts

@@ -64,6 +64,7 @@ export class Blockchain {
     private _exchangeAddress: string;
     private _userAddress: string;
     private _cachedProvider: Web3.Provider;
+    private _cachedProviderNetworkId: number;
     private _ledgerSubprovider: LedgerWalletSubprovider;
     private _zrxPollIntervalId: NodeJS.Timer;
     private static async _onPageLoadAsync(): Promise<void> {
@@ -133,14 +134,14 @@ export class Blockchain {
         } else if (this.networkId !== newNetworkId) {
             this.networkId = newNetworkId;
             this._dispatcher.encounteredBlockchainError(BlockchainErrs.NoError);
-            await this._fetchTokenInformationAsync();
+            await this.fetchTokenInformationAsync();
             await this._rehydrateStoreWithContractEvents();
         }
     }
     public async userAddressUpdatedFireAndForgetAsync(newUserAddress: string) {
         if (this._userAddress !== newUserAddress) {
             this._userAddress = newUserAddress;
-            await this._fetchTokenInformationAsync();
+            await this.fetchTokenInformationAsync();
             await this._rehydrateStoreWithContractEvents();
         }
     }
@@ -180,63 +181,62 @@ export class Blockchain {
         }
         this._ledgerSubprovider.setPathIndex(pathIndex);
     }
-    public async providerTypeUpdatedFireAndForgetAsync(providerType: ProviderType) {
+    public async updateProviderToLedgerAsync(networkId: number) {
         utils.assert(!_.isUndefined(this._zeroEx), 'ZeroEx must be instantiated.');
-        // Should actually be Web3.Provider|ProviderEngine union type but it causes issues
-        // later on in the logic.
-        let provider;
-        switch (providerType) {
-            case ProviderType.Ledger: {
-                const isU2FSupported = await utils.isU2FSupportedAsync();
-                if (!isU2FSupported) {
-                    throw new Error('Cannot update providerType to LEDGER without U2F support');
-                }
 
-                // Cache injected provider so that we can switch the user back to it easily
-                this._cachedProvider = this._web3Wrapper.getProviderObj();
-
-                this._dispatcher.updateUserAddress(''); // Clear old userAddress
-
-                provider = new ProviderEngine();
-                const ledgerWalletConfigs = {
-                    networkId: this.networkId,
-                    ledgerEthereumClientFactoryAsync: ledgerEthereumBrowserClientFactoryAsync,
-                };
-                this._ledgerSubprovider = new LedgerSubprovider(ledgerWalletConfigs);
-                provider.addProvider(this._ledgerSubprovider);
-                provider.addProvider(new FilterSubprovider());
-                const networkId = configs.IS_MAINNET_ENABLED
-                    ? constants.NETWORK_ID_MAINNET
-                    : constants.NETWORK_ID_TESTNET;
-                provider.addProvider(new RedundantRPCSubprovider(configs.PUBLIC_NODE_URLS_BY_NETWORK_ID[networkId]));
-                provider.start();
-                this._web3Wrapper.destroy();
-                const shouldPollUserAddress = false;
-                this._web3Wrapper = new Web3Wrapper(this._dispatcher, provider, this.networkId, shouldPollUserAddress);
-                this._zeroEx.setProvider(provider, networkId);
-                await this._postInstantiationOrUpdatingProviderZeroExAsync();
-                break;
-            }
-
-            case ProviderType.Injected: {
-                if (_.isUndefined(this._cachedProvider)) {
-                    return; // Going from injected to injected, so we noop
-                }
-                provider = this._cachedProvider;
-                const shouldPollUserAddress = true;
-                this._web3Wrapper = new Web3Wrapper(this._dispatcher, provider, this.networkId, shouldPollUserAddress);
-                this._zeroEx.setProvider(provider, this.networkId);
-                await this._postInstantiationOrUpdatingProviderZeroExAsync();
-                delete this._ledgerSubprovider;
-                delete this._cachedProvider;
-                break;
-            }
-
-            default:
-                throw utils.spawnSwitchErr('providerType', providerType);
+        const isU2FSupported = await utils.isU2FSupportedAsync();
+        if (!isU2FSupported) {
+            throw new Error('Cannot update providerType to LEDGER without U2F support');
         }
 
-        await this._fetchTokenInformationAsync();
+        // Cache injected provider so that we can switch the user back to it easily
+        this._cachedProvider = this._web3Wrapper.getProviderObj();
+        this._cachedProviderNetworkId = this.networkId;
+
+        this._userAddress = '';
+        this._dispatcher.updateUserAddress(''); // Clear old userAddress
+
+        const provider = new ProviderEngine();
+        const ledgerWalletConfigs = {
+            networkId,
+            ledgerEthereumClientFactoryAsync: ledgerEthereumBrowserClientFactoryAsync,
+        };
+        this._ledgerSubprovider = new LedgerSubprovider(ledgerWalletConfigs);
+        provider.addProvider(this._ledgerSubprovider);
+        provider.addProvider(new FilterSubprovider());
+        provider.addProvider(new RedundantRPCSubprovider(configs.PUBLIC_NODE_URLS_BY_NETWORK_ID[networkId]));
+        provider.start();
+        this._web3Wrapper.destroy();
+        this.networkId = networkId;
+        this._dispatcher.updateNetworkId(this.networkId);
+        const shouldPollUserAddress = false;
+        this._web3Wrapper = new Web3Wrapper(this._dispatcher, provider, this.networkId, shouldPollUserAddress);
+        this._zeroEx.setProvider(provider, this.networkId);
+        await this._postInstantiationOrUpdatingProviderZeroExAsync();
+        this._dispatcher.updateProviderType(ProviderType.Ledger);
+    }
+    public async updateProviderToInjectedAsync() {
+        utils.assert(!_.isUndefined(this._zeroEx), 'ZeroEx must be instantiated.');
+
+        if (_.isUndefined(this._cachedProvider)) {
+            return; // Going from injected to injected, so we noop
+        }
+        const provider = this._cachedProvider;
+        this.networkId = this._cachedProviderNetworkId;
+        this._dispatcher.updateNetworkId(this.networkId);
+
+        this._web3Wrapper.destroy();
+        const shouldPollUserAddress = true;
+        this._web3Wrapper = new Web3Wrapper(this._dispatcher, provider, this.networkId, shouldPollUserAddress);
+
+        this._userAddress = await this._web3Wrapper.getFirstAccountIfExistsAsync();
+        this._dispatcher.updateUserAddress(this._userAddress);
+        this._zeroEx.setProvider(provider, this.networkId);
+        await this._postInstantiationOrUpdatingProviderZeroExAsync();
+        await this.fetchTokenInformationAsync();
+        this._dispatcher.updateProviderType(ProviderType.Injected);
+        delete this._ledgerSubprovider;
+        delete this._cachedProvider;
     }
     public async setProxyAllowanceAsync(token: Token, amountInBaseUnits: BigNumber): Promise<void> {
         utils.assert(this.isValidAddress(token.address), BlockchainCallErrs.TokenAddressIsInvalid);
@@ -452,6 +452,7 @@ export class Blockchain {
         return [balance, allowance];
     }
     public async updateTokenBalancesAndAllowancesAsync(tokens: Token[]) {
+        const err = new Error('show stopper');
         const tokenStateByAddress: TokenStateByAddress = {};
         for (const token of tokens) {
             let balance = new BigNumber(0);
@@ -483,6 +484,60 @@ export class Blockchain {
         this._web3Wrapper.destroy();
         this._stopWatchingExchangeLogFillEvents();
     }
+    public async fetchTokenInformationAsync() {
+        utils.assert(
+            !_.isUndefined(this.networkId),
+            'Cannot call fetchTokenInformationAsync if disconnected from Ethereum node',
+        );
+
+        this._dispatcher.updateBlockchainIsLoaded(false);
+        // HACK: Without this timeout, the second call to dispatcher somehow causes blockchainIsLoaded
+        // to flicker... Need to debug further :(((())))
+        await new Promise(resolve => setTimeout(resolve, 100));
+        this._dispatcher.clearTokenByAddress();
+
+        const tokenRegistryTokensByAddress = await this._getTokenRegistryTokensByAddressAsync();
+
+        // HACK: This is a hack so that the loading spinner doesn't show up twice...
+        // Once for loading the blockchain, another for loading the userAddress
+        this._userAddress = await this._web3Wrapper.getFirstAccountIfExistsAsync();
+        if (!_.isEmpty(this._userAddress)) {
+            this._dispatcher.updateUserAddress(this._userAddress);
+        }
+
+        let trackedTokensIfExists = trackedTokenStorage.getTrackedTokensIfExists(this._userAddress, this.networkId);
+        const tokenRegistryTokens = _.values(tokenRegistryTokensByAddress);
+        if (_.isUndefined(trackedTokensIfExists)) {
+            trackedTokensIfExists = _.map(configs.DEFAULT_TRACKED_TOKEN_SYMBOLS, symbol => {
+                const token = _.find(tokenRegistryTokens, t => t.symbol === symbol);
+                token.isTracked = true;
+                return token;
+            });
+            _.each(trackedTokensIfExists, token => {
+                trackedTokenStorage.addTrackedTokenToUser(this._userAddress, this.networkId, token);
+            });
+        } else {
+            // Properly set all tokenRegistry tokens `isTracked` to true if they are in the existing trackedTokens array
+            _.each(trackedTokensIfExists, trackedToken => {
+                if (!_.isUndefined(tokenRegistryTokensByAddress[trackedToken.address])) {
+                    tokenRegistryTokensByAddress[trackedToken.address].isTracked = true;
+                }
+            });
+        }
+        const allTokens = _.uniq([...tokenRegistryTokens, ...trackedTokensIfExists]);
+        this._dispatcher.updateTokenByAddress(allTokens);
+
+        // Get balance/allowance for tracked tokens
+        await this.updateTokenBalancesAndAllowancesAsync(trackedTokensIfExists);
+
+        const mostPopularTradingPairTokens: Token[] = [
+            _.find(allTokens, { symbol: configs.DEFAULT_TRACKED_TOKEN_SYMBOLS[0] }),
+            _.find(allTokens, { symbol: configs.DEFAULT_TRACKED_TOKEN_SYMBOLS[1] }),
+        ];
+        this._dispatcher.updateChosenAssetTokenAddress(Side.Deposit, mostPopularTradingPairTokens[0].address);
+        this._dispatcher.updateChosenAssetTokenAddress(Side.Receive, mostPopularTradingPairTokens[1].address);
+        this._dispatcher.updateBlockchainIsLoaded(true);
+    }
     private async _showEtherScanLinkAndAwaitTransactionMinedAsync(
         txHash: string,
     ): Promise<TransactionReceiptWithDecodedLogs> {
@@ -690,60 +745,6 @@ export class Blockchain {
             : constants.PROVIDER_NAME_PUBLIC;
         this._dispatcher.updateInjectedProviderName(providerName);
     }
-    private async _fetchTokenInformationAsync() {
-        utils.assert(
-            !_.isUndefined(this.networkId),
-            'Cannot call fetchTokenInformationAsync if disconnected from Ethereum node',
-        );
-
-        this._dispatcher.updateBlockchainIsLoaded(false);
-        this._dispatcher.clearTokenByAddress();
-
-        const tokenRegistryTokensByAddress = await this._getTokenRegistryTokensByAddressAsync();
-
-        // HACK: We need to fetch the userAddress here because otherwise we cannot save the
-        // tracked tokens in localStorage under the users address nor fetch the token
-        // balances and allowances and we need to do this in order not to trigger the blockchain
-        // loading dialog to show up twice. First to load the contracts, and second to load the
-        // balances and allowances.
-        this._userAddress = await this._web3Wrapper.getFirstAccountIfExistsAsync();
-        if (!_.isEmpty(this._userAddress)) {
-            this._dispatcher.updateUserAddress(this._userAddress);
-        }
-
-        let trackedTokensIfExists = trackedTokenStorage.getTrackedTokensIfExists(this._userAddress, this.networkId);
-        const tokenRegistryTokens = _.values(tokenRegistryTokensByAddress);
-        if (_.isUndefined(trackedTokensIfExists)) {
-            trackedTokensIfExists = _.map(configs.DEFAULT_TRACKED_TOKEN_SYMBOLS, symbol => {
-                const token = _.find(tokenRegistryTokens, t => t.symbol === symbol);
-                token.isTracked = true;
-                return token;
-            });
-            _.each(trackedTokensIfExists, token => {
-                trackedTokenStorage.addTrackedTokenToUser(this._userAddress, this.networkId, token);
-            });
-        } else {
-            // Properly set all tokenRegistry tokens `isTracked` to true if they are in the existing trackedTokens array
-            _.each(trackedTokensIfExists, trackedToken => {
-                if (!_.isUndefined(tokenRegistryTokensByAddress[trackedToken.address])) {
-                    tokenRegistryTokensByAddress[trackedToken.address].isTracked = true;
-                }
-            });
-        }
-        const allTokens = _.uniq([...tokenRegistryTokens, ...trackedTokensIfExists]);
-        this._dispatcher.updateTokenByAddress(allTokens);
-
-        // Get balance/allowance for tracked tokens
-        await this.updateTokenBalancesAndAllowancesAsync(trackedTokensIfExists);
-
-        const mostPopularTradingPairTokens: Token[] = [
-            _.find(allTokens, { symbol: configs.DEFAULT_TRACKED_TOKEN_SYMBOLS[0] }),
-            _.find(allTokens, { symbol: configs.DEFAULT_TRACKED_TOKEN_SYMBOLS[1] }),
-        ];
-        this._dispatcher.updateChosenAssetTokenAddress(Side.Deposit, mostPopularTradingPairTokens[0].address);
-        this._dispatcher.updateChosenAssetTokenAddress(Side.Receive, mostPopularTradingPairTokens[1].address);
-        this._dispatcher.updateBlockchainIsLoaded(true);
-    }
     private async _instantiateContractIfExistsAsync(artifact: any, address?: string): Promise<ContractInstance> {
         const c = await contract(artifact);
         const providerObj = this._web3Wrapper.getProviderObj();

packages/website/ts/components/dialogs/ledger_config_dialog.tsx

@@ -7,8 +7,10 @@ import TextField from 'material-ui/TextField';
 import * as React from 'react';
 import ReactTooltip = require('react-tooltip');
 import { Blockchain } from 'ts/blockchain';
+import { NetworkDropDown } from 'ts/components/dropdowns/network_drop_down';
 import { LifeCycleRaisedButton } from 'ts/components/ui/lifecycle_raised_button';
 import { Dispatcher } from 'ts/redux/dispatcher';
+import { ProviderType } from 'ts/types';
 import { colors } from 'ts/utils/colors';
 import { configs } from 'ts/utils/configs';
 import { constants } from 'ts/utils/constants';
@@ -27,27 +29,30 @@ interface LedgerConfigDialogProps {
     dispatcher: Dispatcher;
     blockchain: Blockchain;
     networkId: number;
+    providerType: ProviderType;
 }
 
 interface LedgerConfigDialogState {
-    didConnectFail: boolean;
+    connectionErrMsg: string;
     stepIndex: LedgerSteps;
     userAddresses: string[];
     addressBalances: BigNumber[];
     derivationPath: string;
     derivationErrMsg: string;
+    preferredNetworkId: number;
 }
 
 export class LedgerConfigDialog extends React.Component<LedgerConfigDialogProps, LedgerConfigDialogState> {
     constructor(props: LedgerConfigDialogProps) {
         super(props);
         this.state = {
-            didConnectFail: false,
+            connectionErrMsg: '',
             stepIndex: LedgerSteps.CONNECT,
             userAddresses: [],
             addressBalances: [],
             derivationPath: configs.DEFAULT_DERIVATION_PATH,
             derivationErrMsg: '',
+            preferredNetworkId: props.networkId,
         };
     }
     public render() {
@@ -77,7 +82,7 @@ export class LedgerConfigDialog extends React.Component<LedgerConfigDialogProps,
         return (
             <div>
                 <div className="h4 pt3">Follow these instructions before proceeding:</div>
-                <ol>
+                <ol className="mb0">
                     <li className="pb1">Connect your Ledger Nano S & Open the Ethereum application</li>
                     <li className="pb1">Verify that Browser Support is enabled in Settings</li>
                     <li className="pb1">
@@ -86,7 +91,15 @@ export class LedgerConfigDialog extends React.Component<LedgerConfigDialogProps,
                             Firmware >1.2
                         </a>
                     </li>
+                    <li>Choose your desired network:</li>
                 </ol>
+                <div className="pb2">
+                    <NetworkDropDown
+                        updateSelectedNetwork={this._onSelectedNetworkUpdated.bind(this)}
+                        selectedNetworkId={this.state.preferredNetworkId}
+                        avialableNetworkIds={[1, 42]}
+                    />
+                </div>
                 <div className="center pb3">
                     <LifeCycleRaisedButton
                         isPrimary={true}
@@ -95,9 +108,9 @@ export class LedgerConfigDialog extends React.Component<LedgerConfigDialogProps,
                         labelComplete="Connected!"
                         onClickAsyncFn={this._onConnectLedgerClickAsync.bind(this, true)}
                     />
-                    {this.state.didConnectFail && (
+                    {!_.isEmpty(this.state.connectionErrMsg) && (
                         <div className="pt2 left-align" style={{ color: colors.red200 }}>
-                            Failed to connect. Follow the instructions and try again.
+                            {this.state.connectionErrMsg}
                         </div>
                     )}
                 </div>
@@ -172,7 +185,7 @@ export class LedgerConfigDialog extends React.Component<LedgerConfigDialogProps,
     }
     private _onClose() {
         this.setState({
-            didConnectFail: false,
+            connectionErrMsg: '',
         });
         const isOpen = false;
         this.props.toggleDialogFn(isOpen);
@@ -184,6 +197,7 @@ export class LedgerConfigDialog extends React.Component<LedgerConfigDialogProps,
         const selectAddressBalance = this.state.addressBalances[selectedRowIndex];
         this.props.dispatcher.updateUserAddress(selectedAddress);
         this.props.blockchain.updateWeb3WrapperPrevUserAddress(selectedAddress);
+        this.props.blockchain.fetchTokenInformationAsync(); // fire and forget
         this.props.dispatcher.updateUserEtherBalance(selectAddressBalance);
         this.setState({
             stepIndex: LedgerSteps.CONNECT,
@@ -219,7 +233,7 @@ export class LedgerConfigDialog extends React.Component<LedgerConfigDialogProps,
         } catch (err) {
             utils.consoleLog(`Ledger error: ${JSON.stringify(err)}`);
             this.setState({
-                didConnectFail: true,
+                connectionErrMsg: 'Failed to connect. Follow the instructions and try again.',
             });
             return false;
         }
@@ -241,6 +255,19 @@ export class LedgerConfigDialog extends React.Component<LedgerConfigDialogProps,
         });
     }
     private async _onConnectLedgerClickAsync() {
+        const isU2FSupported = await utils.isU2FSupportedAsync();
+        if (!isU2FSupported) {
+            utils.consoleLog(`U2F not supported in this browser`);
+            this.setState({
+                connectionErrMsg: 'U2F not supported by this browser. Try using Chrome.',
+            });
+            return false;
+        }
+
+        if (this.props.providerType !== ProviderType.Ledger) {
+            await this.props.blockchain.updateProviderToLedgerAsync(this.state.preferredNetworkId);
+        }
+
         const didSucceed = await this._fetchAddressesAndBalancesAsync();
         if (didSucceed) {
             this.setState({
@@ -258,4 +285,9 @@ export class LedgerConfigDialog extends React.Component<LedgerConfigDialogProps,
         }
         return userAddresses;
     }
+    private _onSelectedNetworkUpdated(e: any, index: number, networkId: number) {
+        this.setState({
+            preferredNetworkId: networkId,
+        });
+    }
 }

packages/website/ts/components/dropdowns/network_drop_down.tsx

@@ -0,0 +1,40 @@
+import * as _ from 'lodash';
+import DropDownMenu from 'material-ui/DropDownMenu';
+import MenuItem from 'material-ui/MenuItem';
+import * as React from 'react';
+import { constants } from 'ts/utils/constants';
+
+interface NetworkDropDownProps {
+    updateSelectedNetwork: (e: any, index: number, value: number) => void;
+    selectedNetworkId: number;
+    avialableNetworkIds: number[];
+}
+
+interface NetworkDropDownState {}
+
+export class NetworkDropDown extends React.Component<NetworkDropDownProps, NetworkDropDownState> {
+    public render() {
+        return (
+            <div className="mx-auto" style={{ width: 120 }}>
+                <DropDownMenu value={this.props.selectedNetworkId} onChange={this.props.updateSelectedNetwork}>
+                    {this._renderDropDownItems()}
+                </DropDownMenu>
+            </div>
+        );
+    }
+    private _renderDropDownItems() {
+        const items = _.map(this.props.avialableNetworkIds, networkId => {
+            const networkName = constants.NETWORK_NAME_BY_ID[networkId];
+            const primaryText = (
+                <div className="flex">
+                    <div className="pr1" style={{ width: 14, paddingTop: 2 }}>
+                        <img src={`/images/network_icons/${networkName.toLowerCase()}.png`} style={{ width: 14 }} />
+                    </div>
+                    <div>{networkName}</div>
+                </div>
+            );
+            return <MenuItem key={networkId} value={networkId} primaryText={primaryText} />;
+        });
+        return items;
+    }
+}

packages/website/ts/components/portal.tsx

@@ -6,6 +6,7 @@ import * as DocumentTitle from 'react-document-title';
 import { Route, Switch } from 'react-router-dom';
 import { Blockchain } from 'ts/blockchain';
 import { BlockchainErrDialog } from 'ts/components/dialogs/blockchain_err_dialog';
+import { LedgerConfigDialog } from 'ts/components/dialogs/ledger_config_dialog';
 import { PortalDisclaimerDialog } from 'ts/components/dialogs/portal_disclaimer_dialog';
 import { WrappedEthSectionNoticeDialog } from 'ts/components/dialogs/wrapped_eth_section_notice_dialog';
 import { EthWrappers } from 'ts/components/eth_wrappers';
@@ -13,19 +14,21 @@ import { FillOrder } from 'ts/components/fill_order';
 import { Footer } from 'ts/components/footer';
 import { PortalMenu } from 'ts/components/portal_menu';
 import { TokenBalances } from 'ts/components/token_balances';
-import { TopBar } from 'ts/components/top_bar';
+import { TopBar } from 'ts/components/top_bar/top_bar';
 import { TradeHistory } from 'ts/components/trade_history/trade_history';
 import { FlashMessage } from 'ts/components/ui/flash_message';
 import { Loading } from 'ts/components/ui/loading';
 import { GenerateOrderForm } from 'ts/containers/generate_order_form';
 import { localStorage } from 'ts/local_storage/local_storage';
 import { Dispatcher } from 'ts/redux/dispatcher';
+import { State } from 'ts/redux/reducer';
 import { orderSchema } from 'ts/schemas/order_schema';
 import { SchemaValidator } from 'ts/schemas/validator';
 import {
     BlockchainErrs,
     HashData,
     Order,
+    ProviderType,
     ScreenWidths,
     Token,
     TokenByAddress,
@@ -46,9 +49,11 @@ export interface PortalAllProps {
     blockchainIsLoaded: boolean;
     dispatcher: Dispatcher;
     hashData: HashData;
+    injectedProviderName: string;
     networkId: number;
     nodeVersion: string;
     orderFillAmount: BigNumber;
+    providerType: ProviderType;
     screenWidth: ScreenWidths;
     tokenByAddress: TokenByAddress;
     tokenStateByAddress: TokenStateByAddress;
@@ -67,6 +72,7 @@ interface PortalAllState {
     prevPathname: string;
     isDisclaimerDialogOpen: boolean;
     isWethNoticeDialogOpen: boolean;
+    isLedgerDialogOpen: boolean;
 }
 
 export class Portal extends React.Component<PortalAllProps, PortalAllState> {
@@ -96,6 +102,7 @@ export class Portal extends React.Component<PortalAllProps, PortalAllState> {
             prevPathname: this.props.location.pathname,
             isDisclaimerDialogOpen: !hasAcceptedDisclaimer,
             isWethNoticeDialogOpen: !hasAlreadyDismissedWethNotice && isViewingBalances,
+            isLedgerDialogOpen: false,
         };
     }
     public componentDidMount() {
@@ -127,8 +134,9 @@ export class Portal extends React.Component<PortalAllProps, PortalAllState> {
             this._blockchain.userAddressUpdatedFireAndForgetAsync(nextProps.userAddress);
             if (!_.isEmpty(nextProps.userAddress) && nextProps.blockchainIsLoaded) {
                 const tokens = _.values(nextProps.tokenByAddress);
+                const trackedTokens = _.filter(tokens, t => t.isTracked);
                 // tslint:disable-next-line:no-floating-promises
-                this._updateBalanceAndAllowanceWithLoadingScreenAsync(tokens);
+                this._updateBalanceAndAllowanceWithLoadingScreenAsync(trackedTokens);
             }
             this.setState({
                 prevUserAddress: nextProps.userAddress,
@@ -167,8 +175,14 @@ export class Portal extends React.Component<PortalAllProps, PortalAllState> {
                 <DocumentTitle title="0x Portal DApp" />
                 <TopBar
                     userAddress={this.props.userAddress}
+                    networkId={this.props.networkId}
+                    injectedProviderName={this.props.injectedProviderName}
+                    onToggleLedgerDialog={this.onToggleLedgerDialog.bind(this)}
+                    dispatcher={this.props.dispatcher}
+                    providerType={this.props.providerType}
                     blockchainIsLoaded={this.props.blockchainIsLoaded}
                     location={this.props.location}
+                    blockchain={this._blockchain}
                 />
                 <div id="portal" className="mx-auto max-width-4" style={{ width: '100%' }}>
                     <Paper className="mb3 mt2">
@@ -239,11 +253,26 @@ export class Portal extends React.Component<PortalAllProps, PortalAllState> {
                         onToggleDialog={this._onPortalDisclaimerAccepted.bind(this)}
                     />
                     <FlashMessage dispatcher={this.props.dispatcher} flashMessage={this.props.flashMessage} />
+                    {this.props.blockchainIsLoaded && (
+                        <LedgerConfigDialog
+                            providerType={this.props.providerType}
+                            networkId={this.props.networkId}
+                            blockchain={this._blockchain}
+                            dispatcher={this.props.dispatcher}
+                            toggleDialogFn={this.onToggleLedgerDialog.bind(this)}
+                            isOpen={this.state.isLedgerDialogOpen}
+                        />
+                    )}
                 </div>
-                <Footer />
+                <Footer />;
             </div>
         );
     }
+    public onToggleLedgerDialog() {
+        this.setState({
+            isLedgerDialogOpen: !this.state.isLedgerDialogOpen,
+        });
+    }
     private _renderEthWrapper() {
         return (
             <EthWrappers

packages/website/ts/components/top_bar/provider_display.tsx

@@ -0,0 +1,149 @@
+import * as _ from 'lodash';
+import Menu from 'material-ui/Menu';
+import MenuItem from 'material-ui/MenuItem';
+import { RadioButton, RadioButtonGroup } from 'material-ui/RadioButton';
+import RaisedButton from 'material-ui/RaisedButton';
+import * as React from 'react';
+import { Link } from 'react-router-dom';
+import { Blockchain } from 'ts/blockchain';
+import { ProviderPicker } from 'ts/components/top_bar/provider_picker';
+import { DropDown } from 'ts/components/ui/drop_down';
+import { Identicon } from 'ts/components/ui/identicon';
+import { Dispatcher } from 'ts/redux/dispatcher';
+import { ProviderType } from 'ts/types';
+import { colors } from 'ts/utils/colors';
+import { constants } from 'ts/utils/constants';
+import { utils } from 'ts/utils/utils';
+
+const IDENTICON_DIAMETER = 32;
+
+interface ProviderDisplayProps {
+    dispatcher: Dispatcher;
+    userAddress: string;
+    networkId: number;
+    injectedProviderName: string;
+    providerType: ProviderType;
+    onToggleLedgerDialog: () => void;
+    blockchain: Blockchain;
+}
+
+interface ProviderDisplayState {}
+
+export class ProviderDisplay extends React.Component<ProviderDisplayProps, ProviderDisplayState> {
+    public render() {
+        const isAddressAvailable = !_.isEmpty(this.props.userAddress);
+        const isExternallyInjectedProvider = ProviderType.Injected && this.props.injectedProviderName !== '0x Public';
+        const displayAddress = isAddressAvailable
+            ? utils.getAddressBeginAndEnd(this.props.userAddress)
+            : isExternallyInjectedProvider ? 'Account locked' : '0x0000...0000';
+        // If the "injected" provider is our fallback public node, then we want to
+        // show the "connect a wallet" message instead of the providerName
+        const injectedProviderName = isExternallyInjectedProvider
+            ? this.props.injectedProviderName
+            : 'Connect a wallet';
+        const providerTitle =
+            this.props.providerType === ProviderType.Injected ? injectedProviderName : 'Ledger Nano S';
+        const hoverActiveNode = (
+            <div className="flex right lg-pr0 md-pr2 sm-pr2" style={{ paddingTop: 16 }}>
+                <div>
+                    <Identicon address={this.props.userAddress} diameter={IDENTICON_DIAMETER} />
+                </div>
+                <div style={{ marginLeft: 12, paddingTop: 1 }}>
+                    <div style={{ fontSize: 12, color: '#FF7F00' }}>{providerTitle}</div>
+                    <div style={{ fontSize: 14 }}>{displayAddress}</div>
+                </div>
+                <div style={{ borderLeft: '1px solid #E0E0E0', marginLeft: 17, paddingTop: 1 }} className="px2">
+                    <i style={{ fontSize: 30, color: '#E0E0E0' }} className="zmdi zmdi zmdi-chevron-down" />
+                </div>
+            </div>
+        );
+        const hasInjectedProvider =
+            this.props.injectedProviderName !== '0x Public' && this.props.providerType === ProviderType.Injected;
+        const hasLedgerProvider = this.props.providerType === ProviderType.Ledger;
+        const horizontalPosition = hasInjectedProvider || hasLedgerProvider ? 'left' : 'middle';
+        return (
+            <div style={{ width: 'fit-content', height: 48, float: 'right' }}>
+                <DropDown
+                    hoverActiveNode={hoverActiveNode}
+                    popoverContent={this.renderPopoverContent(hasInjectedProvider, hasLedgerProvider)}
+                    anchorOrigin={{ horizontal: horizontalPosition, vertical: 'bottom' }}
+                    targetOrigin={{ horizontal: horizontalPosition, vertical: 'top' }}
+                    zDepth={1}
+                />
+            </div>
+        );
+    }
+    public renderPopoverContent(hasInjectedProvider: boolean, hasLedgerProvider: boolean) {
+        if (hasInjectedProvider || hasLedgerProvider) {
+            return (
+                <ProviderPicker
+                    dispatcher={this.props.dispatcher}
+                    networkId={this.props.networkId}
+                    injectedProviderName={this.props.injectedProviderName}
+                    providerType={this.props.providerType}
+                    onToggleLedgerDialog={this.props.onToggleLedgerDialog}
+                    blockchain={this.props.blockchain}
+                />
+            );
+        } else {
+            // Nothing to connect to, show install/info popover
+            return (
+                <div className="px2" style={{ maxWidth: 420 }}>
+                    <div className="center h4 py2" style={{ color: colors.grey700 }}>
+                        Choose a wallet:
+                    </div>
+                    <div className="flex pb3">
+                        <div className="center px2">
+                            <div style={{ color: colors.darkGrey }}>Install a browser wallet</div>
+                            <div className="py2">
+                                <img src="/images/metamask_or_parity.png" width="135" />
+                            </div>
+                            <div>
+                                Use{' '}
+                                <a
+                                    href={constants.URL_METAMASK_CHROME_STORE}
+                                    target="_blank"
+                                    style={{ color: colors.lightBlueA700 }}
+                                >
+                                    Metamask
+                                </a>{' '}
+                                or{' '}
+                                <a
+                                    href={constants.URL_PARITY_CHROME_STORE}
+                                    target="_blank"
+                                    style={{ color: colors.lightBlueA700 }}
+                                >
+                                    Parity Signer
+                                </a>
+                            </div>
+                        </div>
+                        <div>
+                            <div
+                                className="pl1 ml1"
+                                style={{ borderLeft: `1px solid ${colors.grey300}`, height: 65 }}
+                            />
+                            <div className="py1">or</div>
+                            <div
+                                className="pl1 ml1"
+                                style={{ borderLeft: `1px solid ${colors.grey300}`, height: 68 }}
+                            />
+                        </div>
+                        <div className="px2 center">
+                            <div style={{ color: colors.darkGrey }}>Connect to a ledger hardware wallet</div>
+                            <div style={{ paddingTop: 21, paddingBottom: 29 }}>
+                                <img src="/images/ledger_icon.png" style={{ width: 80 }} />
+                            </div>
+                            <div>
+                                <RaisedButton
+                                    style={{ width: '100%' }}
+                                    label="Use Ledger"
+                                    onClick={this.props.onToggleLedgerDialog}
+                                />
+                            </div>
+                        </div>
+                    </div>
+                </div>
+            );
+        }
+    }
+}

packages/website/ts/components/top_bar/provider_picker.tsx

@@ -0,0 +1,88 @@
+import * as _ from 'lodash';
+import Menu from 'material-ui/Menu';
+import MenuItem from 'material-ui/MenuItem';
+import { RadioButton, RadioButtonGroup } from 'material-ui/RadioButton';
+import * as React from 'react';
+import { Link } from 'react-router-dom';
+import { Blockchain } from 'ts/blockchain';
+import { DropDown } from 'ts/components/ui/drop_down';
+import { Identicon } from 'ts/components/ui/identicon';
+import { Dispatcher } from 'ts/redux/dispatcher';
+import { ProviderType } from 'ts/types';
+import { constants } from 'ts/utils/constants';
+import { utils } from 'ts/utils/utils';
+
+const IDENTICON_DIAMETER = 32;
+const SELECTED_BG_COLOR = '#F7F7F7';
+
+interface ProviderPickerProps {
+    networkId: number;
+    injectedProviderName: string;
+    providerType: ProviderType;
+    onToggleLedgerDialog: () => void;
+    dispatcher: Dispatcher;
+    blockchain: Blockchain;
+}
+
+interface ProviderPickerState {}
+
+export class ProviderPicker extends React.Component<ProviderPickerProps, ProviderPickerState> {
+    public render() {
+        const isLedgerSelected = this.props.providerType === ProviderType.Ledger;
+        const menuStyle = {
+            padding: 10,
+            paddingTop: 15,
+            paddingBottom: 15,
+        };
+        const injectedLabel = (
+            <div className="flex">
+                <div>{this.props.injectedProviderName}</div>
+                {this._renderNetwork()}
+            </div>
+        );
+        // Show dropdown with two options
+        return (
+            <div style={{ width: 225, overflow: 'hidden' }}>
+                <RadioButtonGroup
+                    name="provider"
+                    defaultSelected={this.props.providerType}
+                    onChange={this._onProviderRadioChanged.bind(this)}
+                >
+                    <RadioButton
+                        style={{ ...menuStyle, backgroundColor: !isLedgerSelected && SELECTED_BG_COLOR }}
+                        value={ProviderType.Injected}
+                        label={injectedLabel}
+                    />
+                    <RadioButton
+                        style={{ ...menuStyle, backgroundColor: isLedgerSelected && SELECTED_BG_COLOR }}
+                        value={ProviderType.Ledger}
+                        label="Ledger Nano S"
+                    />
+                </RadioButtonGroup>
+            </div>
+        );
+    }
+    private _renderNetwork() {
+        const networkName = constants.NETWORK_NAME_BY_ID[this.props.networkId];
+        return (
+            <div className="flex">
+                <div className="pr1 relative" style={{ width: 14, paddingLeft: 14 }}>
+                    <img
+                        src={`/images/network_icons/${networkName.toLowerCase()}.png`}
+                        className="absolute"
+                        style={{ top: 4, width: 14 }}
+                    />
+                </div>
+                <div style={{ color: '#BBBBBB' }}>{networkName}</div>
+            </div>
+        );
+    }
+    private _onProviderRadioChanged(e: any, value: string) {
+        if (value === ProviderType.Ledger) {
+            this.props.onToggleLedgerDialog();
+        } else {
+            // Fire and forget
+            this.props.blockchain.updateProviderToInjectedAsync();
+        }
+    }
+}

packages/website/ts/components/top_bar/top_bar.tsx

@@ -1,21 +1,32 @@
 import * as _ from 'lodash';
 import Drawer from 'material-ui/Drawer';
+import Menu from 'material-ui/Menu';
 import MenuItem from 'material-ui/MenuItem';
 import * as React from 'react';
 import { Link } from 'react-router-dom';
 import ReactTooltip = require('react-tooltip');
+import { Blockchain } from 'ts/blockchain';
 import { PortalMenu } from 'ts/components/portal_menu';
-import { TopBarMenuItem } from 'ts/components/top_bar_menu_item';
-import { DropDownMenuItem } from 'ts/components/ui/drop_down_menu_item';
+import { ProviderDisplay } from 'ts/components/top_bar/provider_display';
+import { TopBarMenuItem } from 'ts/components/top_bar/top_bar_menu_item';
+import { DropDown } from 'ts/components/ui/drop_down';
 import { Identicon } from 'ts/components/ui/identicon';
 import { DocsInfo } from 'ts/pages/documentation/docs_info';
 import { NestedSidebarMenu } from 'ts/pages/shared/nested_sidebar_menu';
-import { DocsMenu, MenuSubsectionsBySection, Styles, WebsitePaths } from 'ts/types';
+import { Dispatcher } from 'ts/redux/dispatcher';
+import { DocsMenu, MenuSubsectionsBySection, ProviderType, Styles, TypeDocNode, WebsitePaths } from 'ts/types';
 import { colors } from 'ts/utils/colors';
+import { configs } from 'ts/utils/configs';
 import { constants } from 'ts/utils/constants';
 
 interface TopBarProps {
     userAddress?: string;
+    networkId?: number;
+    injectedProviderName?: string;
+    providerType?: ProviderType;
+    onToggleLedgerDialog?: () => void;
+    blockchain?: Blockchain;
+    dispatcher?: Dispatcher;
     blockchainIsLoaded: boolean;
     location: Location;
     docsVersion?: string;
@@ -125,6 +136,15 @@ export class TopBar extends React.Component<TopBarProps, TopBarState> {
             cursor: 'pointer',
             paddingTop: 16,
         };
+        const hoverActiveNode = (
+            <div className="flex relative" style={{ color: menuIconStyle.color }}>
+                <div style={{ paddingRight: 10 }}>Developers</div>
+                <div className="absolute" style={{ paddingLeft: 3, right: 3, top: -2 }}>
+                    <i className="zmdi zmdi-caret-right" style={{ fontSize: 22 }} />
+                </div>
+            </div>
+        );
+        const popoverContent = <Menu style={{ color: colors.darkGrey }}>{developerSectionMenuItems}</Menu>;
         return (
             <div style={{ ...styles.topBar, ...bottomBorderStyle, ...this.props.style }} className="pb1">
                 <div className={parentClassNames}>
@@ -138,11 +158,12 @@ export class TopBar extends React.Component<TopBarProps, TopBarState> {
                     {!this._isViewingPortal() && (
                         <div className={menuClasses}>
                             <div className="flex justify-between">
-                                <DropDownMenuItem
-                                    title="Developers"
-                                    subMenuItems={developerSectionMenuItems}
+                                <DropDown
+                                    hoverActiveNode={hoverActiveNode}
+                                    popoverContent={popoverContent}
+                                    anchorOrigin={{ horizontal: 'middle', vertical: 'bottom' }}
+                                    targetOrigin={{ horizontal: 'middle', vertical: 'top' }}
                                     style={styles.menuItem}
-                                    isNightVersion={isNightVersion}
                                 />
                                 <TopBarMenuItem
                                     title="Wiki"
@@ -167,10 +188,19 @@ export class TopBar extends React.Component<TopBarProps, TopBarState> {
                             </div>
                         </div>
                     )}
-                    {this.props.blockchainIsLoaded &&
-                        !_.isEmpty(this.props.userAddress) && (
-                            <div className="col col-5 sm-hide xs-hide">{this._renderUser()}</div>
-                        )}
+                    {this.props.blockchainIsLoaded && (
+                        <div className="col col-5">
+                            <ProviderDisplay
+                                dispatcher={this.props.dispatcher}
+                                userAddress={this.props.userAddress}
+                                networkId={this.props.networkId}
+                                injectedProviderName={this.props.injectedProviderName}
+                                providerType={this.props.providerType}
+                                onToggleLedgerDialog={this.props.onToggleLedgerDialog}
+                                blockchain={this.props.blockchain}
+                            />
+                        </div>
+                    )}
                     <div className={`col ${isFullWidthPage ? 'col-2 pl2' : 'col-1'} md-hide lg-hide`}>
                         <div style={menuIconStyle}>
                             <i className="zmdi zmdi-menu" onClick={this._onMenuButtonClick.bind(this)} />

packages/website/ts/components/ui/drop_down.tsx

@@ -1,7 +1,8 @@
 import * as _ from 'lodash';
 import Menu from 'material-ui/Menu';
-import Popover from 'material-ui/Popover';
+import Popover, { PopoverAnimationVertical } from 'material-ui/Popover';
 import * as React from 'react';
+import { MaterialUIPosition, Styles, WebsitePaths } from 'ts/types';
 import { colors } from 'ts/utils/colors';
 
 const CHECK_CLOSE_POPOVER_INTERVAL_MS = 300;
@@ -9,28 +10,28 @@ const DEFAULT_STYLE = {
     fontSize: 14,
 };
 
-interface DropDownMenuItemProps {
-    title: string;
-    subMenuItems: React.ReactNode[];
+interface DropDownProps {
+    hoverActiveNode: React.ReactNode;
+    popoverContent: React.ReactNode;
+    anchorOrigin: MaterialUIPosition;
+    targetOrigin: MaterialUIPosition;
     style?: React.CSSProperties;
-    menuItemStyle?: React.CSSProperties;
-    isNightVersion?: boolean;
+    zDepth?: number;
 }
 
-interface DropDownMenuItemState {
+interface DropDownState {
     isDropDownOpen: boolean;
     anchorEl?: HTMLInputElement;
 }
 
-export class DropDownMenuItem extends React.Component<DropDownMenuItemProps, DropDownMenuItemState> {
-    public static defaultProps: Partial<DropDownMenuItemProps> = {
+export class DropDown extends React.Component<DropDownProps, DropDownState> {
+    public static defaultProps: Partial<DropDownProps> = {
         style: DEFAULT_STYLE,
-        menuItemStyle: DEFAULT_STYLE,
-        isNightVersion: false,
+        zDepth: 1,
     };
     private _isHovering: boolean;
     private _popoverCloseCheckIntervalId: number;
-    constructor(props: DropDownMenuItemProps) {
+    constructor(props: DropDownProps) {
         super(props);
         this.state = {
             isDropDownOpen: false,
@@ -44,30 +45,35 @@ export class DropDownMenuItem extends React.Component<DropDownMenuItemProps, Dro
     public componentWillUnmount() {
         window.clearInterval(this._popoverCloseCheckIntervalId);
     }
+    public componentWillReceiveProps(nextProps: DropDownProps) {
+        // HACK: If the popoverContent is updated to a different dimension and the users
+        // mouse is no longer above it, the dropdown can enter an inconsistent state where
+        // it believes the user is still hovering over it. In order to remedy this, we
+        // call hoverOff whenever the dropdown receives updated props. This is a hack
+        // because it will effectively close the dropdown on any prop update, barring
+        // dropdowns from having dynamic content.
+        this._onHoverOff();
+    }
     public render() {
-        const colorStyle = this.props.isNightVersion ? 'white' : this.props.style.color;
         return (
             <div
-                style={{ ...this.props.style, color: colorStyle }}
+                style={{ ...this.props.style, width: 'fit-content', height: '100%' }}
                 onMouseEnter={this._onHover.bind(this)}
                 onMouseLeave={this._onHoverOff.bind(this)}
             >
-                <div className="flex relative">
-                    <div style={{ paddingRight: 10 }}>{this.props.title}</div>
-                    <div className="absolute" style={{ paddingLeft: 3, right: 3, top: -2 }}>
-                        <i className="zmdi zmdi-caret-right" style={{ fontSize: 22 }} />
-                    </div>
-                </div>
+                {this.props.hoverActiveNode}
                 <Popover
                     open={this.state.isDropDownOpen}
                     anchorEl={this.state.anchorEl}
-                    anchorOrigin={{ horizontal: 'middle', vertical: 'bottom' }}
-                    targetOrigin={{ horizontal: 'middle', vertical: 'top' }}
+                    anchorOrigin={this.props.anchorOrigin}
+                    targetOrigin={this.props.targetOrigin}
                     onRequestClose={this._closePopover.bind(this)}
                     useLayerForClickAway={false}
+                    animation={PopoverAnimationVertical}
+                    zDepth={this.props.zDepth}
                 >
                     <div onMouseEnter={this._onHover.bind(this)} onMouseLeave={this._onHoverOff.bind(this)}>
-                        <Menu style={{ color: colors.grey }}>{this.props.subMenuItems}</Menu>
+                        {this.props.popoverContent}
                     </div>
                 </Popover>
             </div>
@@ -87,7 +93,7 @@ export class DropDownMenuItem extends React.Component<DropDownMenuItemProps, Dro
             anchorEl: event.currentTarget,
         });
     }
-    private _onHoverOff(event: React.FormEvent<HTMLInputElement>) {
+    private _onHoverOff() {
         this._isHovering = false;
     }
     private _checkIfShouldClosePopover() {

packages/website/ts/containers/portal.tsx

@@ -6,16 +6,27 @@ import { Dispatch } from 'redux';
 import { Portal as PortalComponent, PortalAllProps as PortalComponentAllProps } from 'ts/components/portal';
 import { Dispatcher } from 'ts/redux/dispatcher';
 import { State } from 'ts/redux/reducer';
-import { BlockchainErrs, HashData, Order, ScreenWidths, Side, TokenByAddress, TokenStateByAddress } from 'ts/types';
+import {
+    BlockchainErrs,
+    HashData,
+    Order,
+    ProviderType,
+    ScreenWidths,
+    Side,
+    TokenByAddress,
+    TokenStateByAddress,
+} from 'ts/types';
 import { constants } from 'ts/utils/constants';
 
 interface ConnectedState {
     blockchainErr: BlockchainErrs;
     blockchainIsLoaded: boolean;
     hashData: HashData;
+    injectedProviderName: string;
     networkId: number;
     nodeVersion: string;
     orderFillAmount: BigNumber;
+    providerType: ProviderType;
     tokenByAddress: TokenByAddress;
     tokenStateByAddress: TokenStateByAddress;
     userEtherBalance: BigNumber;
@@ -57,10 +68,12 @@ const mapStateToProps = (state: State, ownProps: PortalComponentAllProps): Conne
     return {
         blockchainErr: state.blockchainErr,
         blockchainIsLoaded: state.blockchainIsLoaded,
+        hashData,
+        injectedProviderName: state.injectedProviderName,
         networkId: state.networkId,
         nodeVersion: state.nodeVersion,
         orderFillAmount: state.orderFillAmount,
-        hashData,
+        providerType: state.providerType,
         screenWidth: state.screenWidth,
         shouldBlockchainErrDialogBeOpen: state.shouldBlockchainErrDialogBeOpen,
         tokenByAddress: state.tokenByAddress,

packages/website/ts/pages/about/about.tsx

@@ -2,7 +2,7 @@ import * as _ from 'lodash';
 import * as React from 'react';
 import * as DocumentTitle from 'react-document-title';
 import { Footer } from 'ts/components/footer';
-import { TopBar } from 'ts/components/top_bar';
+import { TopBar } from 'ts/components/top_bar/top_bar';
 import { Profile } from 'ts/pages/about/profile';
 import { ProfileInfo, Styles } from 'ts/types';
 import { colors } from 'ts/utils/colors';

packages/website/ts/pages/documentation/documentation.tsx

@@ -5,7 +5,7 @@ import * as React from 'react';
 import DocumentTitle = require('react-document-title');
 import { scroller } from 'react-scroll';
 import semverSort = require('semver-sort');
-import { TopBar } from 'ts/components/top_bar';
+import { TopBar } from 'ts/components/top_bar/top_bar';
 import { Badge } from 'ts/components/ui/badge';
 import { Comment } from 'ts/pages/documentation/comment';
 import { DocsInfo } from 'ts/pages/documentation/docs_info';

packages/website/ts/pages/faq/faq.tsx

@@ -2,7 +2,7 @@ import * as _ from 'lodash';
 import * as React from 'react';
 import * as DocumentTitle from 'react-document-title';
 import { Footer } from 'ts/components/footer';
-import { TopBar } from 'ts/components/top_bar';
+import { TopBar } from 'ts/components/top_bar/top_bar';
 import { Question } from 'ts/pages/faq/question';
 import { FAQQuestion, FAQSection, Styles, WebsitePaths } from 'ts/types';
 import { colors } from 'ts/utils/colors';

packages/website/ts/pages/landing/landing.tsx

@@ -4,7 +4,7 @@ import * as React from 'react';
 import DocumentTitle = require('react-document-title');
 import { Link } from 'react-router-dom';
 import { Footer } from 'ts/components/footer';
-import { TopBar } from 'ts/components/top_bar';
+import { TopBar } from 'ts/components/top_bar/top_bar';
 import { ScreenWidths, WebsitePaths } from 'ts/types';
 import { colors } from 'ts/utils/colors';
 import { constants } from 'ts/utils/constants';

packages/website/ts/pages/not_found.tsx

@@ -1,7 +1,7 @@
 import * as _ from 'lodash';
 import * as React from 'react';
 import { Footer } from 'ts/components/footer';
-import { TopBar } from 'ts/components/top_bar';
+import { TopBar } from 'ts/components/top_bar/top_bar';
 import { Styles } from 'ts/types';
 
 export interface NotFoundProps {

packages/website/ts/pages/wiki/wiki.tsx

@@ -3,7 +3,7 @@ import CircularProgress from 'material-ui/CircularProgress';
 import * as React from 'react';
 import DocumentTitle = require('react-document-title');
 import { scroller } from 'react-scroll';
-import { TopBar } from 'ts/components/top_bar';
+import { TopBar } from 'ts/components/top_bar/top_bar';
 import { MarkdownSection } from 'ts/pages/shared/markdown_section';
 import { NestedSidebarMenu } from 'ts/pages/shared/nested_sidebar_menu';
 import { SectionHeader } from 'ts/pages/shared/section_header';

packages/website/ts/types.ts

@@ -678,4 +678,9 @@ export enum SmartContractDocSections {
     ZRXToken = 'ZRXToken',
 }
 
+export interface MaterialUIPosition {
+    vertical: 'bottom' | 'top' | 'center';
+    horizontal: 'left' | 'middle' | 'right';
+}
+
 // tslint:disable:max-file-line-count