Implement just-in-time loading of token balances & allowances

23 files changed, 384 insertions, 295 deletions

diff --git a/packages/website/ts/blockchain.ts b/packages/website/ts/blockchain.ts
index 6fc56aecd..898cb2d01 100644
--- a/packages/website/ts/blockchain.ts
+++ b/packages/website/ts/blockchain.ts
@@ -66,7 +66,6 @@ export class Blockchain {
     private _cachedProvider: Web3.Provider;
     private _cachedProviderNetworkId: number;
     private _ledgerSubprovider: LedgerWalletSubprovider;
-    private _zrxPollIntervalId: NodeJS.Timer;
     private static async _onPageLoadAsync(): Promise<void> {
         if (document.readyState === 'complete') {
             return; // Already loaded
@@ -250,7 +249,6 @@ export class Blockchain {
         );
         await this._showEtherScanLinkAndAwaitTransactionMinedAsync(txHash);
         const allowance = amountInBaseUnits;
-        this._dispatcher.replaceTokenAllowanceByAddress(token.address, allowance);
     }
     public async transferAsync(token: Token, toAddress: string, amountInBaseUnits: BigNumber): Promise<void> {
         const txHash = await this._zeroEx.token.transferAsync(
@@ -368,22 +366,25 @@ export class Blockchain {
 
         const [currBalance] = await this.getTokenBalanceAndAllowanceAsync(this._userAddress, token.address);
 
-        this._zrxPollIntervalId = intervalUtils.setAsyncExcludingInterval(
-            async () => {
-                const [balance] = await this.getTokenBalanceAndAllowanceAsync(this._userAddress, token.address);
-                if (!balance.eq(currBalance)) {
-                    this._dispatcher.replaceTokenBalanceByAddress(token.address, balance);
-                    intervalUtils.clearAsyncExcludingInterval(this._zrxPollIntervalId);
-                    delete this._zrxPollIntervalId;
-                }
-            },
-            5000,
-            (err: Error) => {
-                utils.consoleLog(`Polling tokenBalance failed: ${err}`);
-                intervalUtils.clearAsyncExcludingInterval(this._zrxPollIntervalId);
-                delete this._zrxPollIntervalId;
-            },
-        );
+        const newTokenBalancePromise = new Promise((resolve: (balance: BigNumber) => void, reject) => {
+            const tokenPollInterval = intervalUtils.setAsyncExcludingInterval(
+                async () => {
+                    const [balance] = await this.getTokenBalanceAndAllowanceAsync(this._userAddress, token.address);
+                    if (!balance.eq(currBalance)) {
+                        intervalUtils.clearAsyncExcludingInterval(tokenPollInterval);
+                        resolve(balance);
+                    }
+                },
+                5000,
+                (err: Error) => {
+                    utils.consoleLog(`Polling tokenBalance failed: ${err}`);
+                    intervalUtils.clearAsyncExcludingInterval(tokenPollInterval);
+                    reject(err);
+                },
+            );
+        });
+
+        return newTokenBalancePromise;
     }
     public async signOrderHashAsync(orderHash: string): Promise<SignatureData> {
         utils.assert(!_.isUndefined(this._zeroEx), 'ZeroEx must be instantiated.');
@@ -408,7 +409,6 @@ export class Blockchain {
             from: this._userAddress,
         });
         const balanceDelta = constants.MINT_AMOUNT;
-        this._dispatcher.updateTokenBalanceByAddress(token.address, balanceDelta);
     }
     public async getBalanceInEthAsync(owner: string): Promise<BigNumber> {
         const balance = await this._web3Wrapper.getBalanceInEthAsync(owner);
@@ -451,23 +451,6 @@ 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);
-            let allowance = new BigNumber(0);
-            if (this._doesUserAddressExist()) {
-                [balance, allowance] = await this.getTokenBalanceAndAllowanceAsync(this._userAddress, token.address);
-            }
-            const tokenState = {
-                balance,
-                allowance,
-            };
-            tokenStateByAddress[token.address] = tokenState;
-        }
-        this._dispatcher.updateTokenStateByAddress(tokenStateByAddress);
-    }
     public async getUserAccountsAsync() {
         utils.assert(!_.isUndefined(this._zeroEx), 'ZeroEx must be instantiated.');
         const userAccountsIfExists = await this._zeroEx.getAvailableAddressesAsync();
@@ -480,7 +463,6 @@ export class Blockchain {
         this._web3Wrapper.updatePrevUserAddress(newUserAddress);
     }
     public destroy() {
-        intervalUtils.clearAsyncExcludingInterval(this._zrxPollIntervalId);
         this._web3Wrapper.destroy();
         this._stopWatchingExchangeLogFillEvents();
     }
@@ -527,9 +509,6 @@ export class Blockchain {
         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] }),
diff --git a/packages/website/ts/components/dialogs/eth_weth_conversion_dialog.tsx b/packages/website/ts/components/dialogs/eth_weth_conversion_dialog.tsx
index 661cc1d8c..a3a39a1b9 100644
--- a/packages/website/ts/components/dialogs/eth_weth_conversion_dialog.tsx
+++ b/packages/website/ts/components/dialogs/eth_weth_conversion_dialog.tsx
@@ -2,25 +2,31 @@ import { BigNumber } from '@0xproject/utils';
 import Dialog from 'material-ui/Dialog';
 import FlatButton from 'material-ui/FlatButton';
 import * as React from 'react';
+import { Blockchain } from 'ts/blockchain';
 import { EthAmountInput } from 'ts/components/inputs/eth_amount_input';
 import { TokenAmountInput } from 'ts/components/inputs/token_amount_input';
-import { Side, Token, TokenState } from 'ts/types';
+import { Side, Token } from 'ts/types';
 import { colors } from 'ts/utils/colors';
 
 interface EthWethConversionDialogProps {
+    blockchain: Blockchain;
+    userAddress: string;
+    networkId: number;
     direction: Side;
     onComplete: (direction: Side, value: BigNumber) => void;
     onCancelled: () => void;
     isOpen: boolean;
     token: Token;
-    tokenState: TokenState;
     etherBalance: BigNumber;
+    lastForceTokenStateRefetch: number;
 }
 
 interface EthWethConversionDialogState {
     value?: BigNumber;
     shouldShowIncompleteErrs: boolean;
     hasErrors: boolean;
+    isEthTokenBalanceLoaded: boolean;
+    ethTokenBalance: BigNumber;
 }
 
 export class EthWethConversionDialog extends React.Component<
@@ -32,8 +38,14 @@ export class EthWethConversionDialog extends React.Component<
         this.state = {
             shouldShowIncompleteErrs: false,
             hasErrors: false,
+            isEthTokenBalanceLoaded: false,
+            ethTokenBalance: new BigNumber(0),
         };
     }
+    public componentWillMount() {
+        // tslint:disable-next-line:no-floating-promises
+        this._fetchEthTokenBalanceAsync();
+    }
     public render() {
         const convertDialogActions = [
             <FlatButton key="cancel" label="Cancel" onTouchTap={this._onCancel.bind(this)} />,
@@ -72,8 +84,11 @@ export class EthWethConversionDialog extends React.Component<
                     <div className="pt2 mx-auto" style={{ width: 245 }}>
                         {this.props.direction === Side.Receive ? (
                             <TokenAmountInput
+                                lastForceTokenStateRefetch={this.props.lastForceTokenStateRefetch}
+                                blockchain={this.props.blockchain}
+                                userAddress={this.props.userAddress}
+                                networkId={this.props.networkId}
                                 token={this.props.token}
-                                tokenState={this.props.tokenState}
                                 shouldShowIncompleteErrs={this.state.shouldShowIncompleteErrs}
                                 shouldCheckBalance={true}
                                 shouldCheckAllowance={false}
@@ -93,19 +108,20 @@ export class EthWethConversionDialog extends React.Component<
                         )}
                         <div className="pt1" style={{ fontSize: 12 }}>
                             <div className="left">1 ETH = 1 WETH</div>
-                            {this.props.direction === Side.Receive && (
-                                <div
-                                    className="right"
-                                    onClick={this._onMaxClick.bind(this)}
-                                    style={{
-                                        color: colors.darkBlue,
-                                        textDecoration: 'underline',
-                                        cursor: 'pointer',
-                                    }}
-                                >
-                                    Max
-                                </div>
-                            )}
+                            {this.props.direction === Side.Receive &&
+                                this.state.isEthTokenBalanceLoaded && (
+                                    <div
+                                        className="right"
+                                        onClick={this._onMaxClick.bind(this)}
+                                        style={{
+                                            color: colors.darkBlue,
+                                            textDecoration: 'underline',
+                                            cursor: 'pointer',
+                                        }}
+                                    >
+                                        Max
+                                    </div>
+                                )}
                         </div>
                     </div>
                 </div>
@@ -132,7 +148,7 @@ export class EthWethConversionDialog extends React.Component<
     }
     private _onMaxClick() {
         this.setState({
-            value: this.props.tokenState.balance,
+            value: this.state.ethTokenBalance,
         });
     }
     private _onValueChange(isValid: boolean, amount?: BigNumber) {
@@ -160,4 +176,14 @@ export class EthWethConversionDialog extends React.Component<
         });
         this.props.onCancelled();
     }
+    private async _fetchEthTokenBalanceAsync() {
+        const [balance] = await this.props.blockchain.getTokenBalanceAndAllowanceAsync(
+            this.props.userAddress,
+            this.props.token.address,
+        );
+        this.setState({
+            isEthTokenBalanceLoaded: true,
+            ethTokenBalance: balance,
+        });
+    }
 }
diff --git a/packages/website/ts/components/dialogs/ledger_config_dialog.tsx b/packages/website/ts/components/dialogs/ledger_config_dialog.tsx
index aff3f67b1..a17a51622 100644
--- a/packages/website/ts/components/dialogs/ledger_config_dialog.tsx
+++ b/packages/website/ts/components/dialogs/ledger_config_dialog.tsx
@@ -197,7 +197,8 @@ 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
+        // tslint:disable-next-line:no-floating-promises
+        this.props.blockchain.fetchTokenInformationAsync();
         this.props.dispatcher.updateUserEtherBalance(selectAddressBalance);
         this.setState({
             stepIndex: LedgerSteps.CONNECT,
diff --git a/packages/website/ts/components/dialogs/send_dialog.tsx b/packages/website/ts/components/dialogs/send_dialog.tsx
index b3dbce598..d44dd9aab 100644
--- a/packages/website/ts/components/dialogs/send_dialog.tsx
+++ b/packages/website/ts/components/dialogs/send_dialog.tsx
@@ -3,16 +3,20 @@ import * as _ from 'lodash';
 import Dialog from 'material-ui/Dialog';
 import FlatButton from 'material-ui/FlatButton';
 import * as React from 'react';
+import { Blockchain } from 'ts/blockchain';
 import { AddressInput } from 'ts/components/inputs/address_input';
 import { TokenAmountInput } from 'ts/components/inputs/token_amount_input';
-import { Token, TokenState } from 'ts/types';
+import { Token } from 'ts/types';
 
 interface SendDialogProps {
+    blockchain: Blockchain;
+    userAddress: string;
+    networkId: number;
     onComplete: (recipient: string, value: BigNumber) => void;
     onCancelled: () => void;
     isOpen: boolean;
     token: Token;
-    tokenState: TokenState;
+    lastForceTokenStateRefetch: number;
 }
 
 interface SendDialogState {
@@ -66,15 +70,18 @@ export class SendDialog extends React.Component<SendDialogProps, SendDialogState
                     />
                 </div>
                 <TokenAmountInput
+                    blockchain={this.props.blockchain}
+                    userAddress={this.props.userAddress}
+                    networkId={this.props.networkId}
                     label="Amount to send"
                     token={this.props.token}
-                    tokenState={this.props.tokenState}
                     shouldShowIncompleteErrs={this.state.shouldShowIncompleteErrs}
                     shouldCheckBalance={true}
                     shouldCheckAllowance={false}
                     onChange={this._onValueChange.bind(this)}
                     amount={this.state.value}
                     onVisitBalancesPageClick={this.props.onCancelled}
+                    lastForceTokenStateRefetch={this.props.lastForceTokenStateRefetch}
                 />
             </div>
         );
diff --git a/packages/website/ts/components/dialogs/track_token_confirmation_dialog.tsx b/packages/website/ts/components/dialogs/track_token_confirmation_dialog.tsx
index 3f29d46f8..bb7e3ed1a 100644
--- a/packages/website/ts/components/dialogs/track_token_confirmation_dialog.tsx
+++ b/packages/website/ts/components/dialogs/track_token_confirmation_dialog.tsx
@@ -82,16 +82,6 @@ export class TrackTokenConfirmationDialog extends React.Component<
             newTokenEntry.isTracked = true;
             trackedTokenStorage.addTrackedTokenToUser(this.props.userAddress, this.props.networkId, newTokenEntry);
             this.props.dispatcher.updateTokenByAddress([newTokenEntry]);
-
-            const [balance, allowance] = await this.props.blockchain.getCurrentUserTokenBalanceAndAllowanceAsync(
-                token.address,
-            );
-            this.props.dispatcher.updateTokenStateByAddress({
-                [token.address]: {
-                    balance,
-                    allowance,
-                },
-            });
         }
 
         this.setState({
diff --git a/packages/website/ts/components/eth_weth_conversion_button.tsx b/packages/website/ts/components/eth_weth_conversion_button.tsx
index cc5e623ea..52240fd0f 100644
--- a/packages/website/ts/components/eth_weth_conversion_button.tsx
+++ b/packages/website/ts/components/eth_weth_conversion_button.tsx
@@ -12,6 +12,8 @@ import { errorReporter } from 'ts/utils/error_reporter';
 import { utils } from 'ts/utils/utils';
 
 interface EthWethConversionButtonProps {
+    userAddress: string;
+    networkId: number;
     direction: Side;
     ethToken: Token;
     ethTokenState: TokenState;
@@ -21,6 +23,8 @@ interface EthWethConversionButtonProps {
     isOutdatedWrappedEther: boolean;
     onConversionSuccessful?: () => void;
     isDisabled?: boolean;
+    lastForceTokenStateRefetch: number;
+    refetchEthTokenStateAsync: () => Promise<void>;
 }
 
 interface EthWethConversionButtonState {
@@ -64,13 +68,16 @@ export class EthWethConversionButton extends React.Component<
                     onClick={this._toggleConversionDialog.bind(this)}
                 />
                 <EthWethConversionDialog
+                    blockchain={this.props.blockchain}
+                    userAddress={this.props.userAddress}
+                    networkId={this.props.networkId}
                     direction={this.props.direction}
                     isOpen={this.state.isEthConversionDialogVisible}
                     onComplete={this._onConversionAmountSelectedAsync.bind(this)}
                     onCancelled={this._toggleConversionDialog.bind(this)}
                     etherBalance={this.props.userEtherBalance}
                     token={this.props.ethToken}
-                    tokenState={this.props.ethTokenState}
+                    lastForceTokenStateRefetch={this.props.lastForceTokenStateRefetch}
                 />
             </div>
         );
@@ -87,21 +94,18 @@ export class EthWethConversionButton extends React.Component<
         this._toggleConversionDialog();
         const token = this.props.ethToken;
         const tokenState = this.props.ethTokenState;
-        let balance = tokenState.balance;
         try {
             if (direction === Side.Deposit) {
                 await this.props.blockchain.convertEthToWrappedEthTokensAsync(token.address, value);
                 const ethAmount = ZeroEx.toUnitAmount(value, constants.DECIMAL_PLACES_ETH);
                 this.props.dispatcher.showFlashMessage(`Successfully wrapped ${ethAmount.toString()} ETH to WETH`);
-                balance = balance.plus(value);
             } else {
                 await this.props.blockchain.convertWrappedEthTokensToEthAsync(token.address, value);
                 const tokenAmount = ZeroEx.toUnitAmount(value, token.decimals);
                 this.props.dispatcher.showFlashMessage(`Successfully unwrapped ${tokenAmount.toString()} WETH to ETH`);
-                balance = balance.minus(value);
             }
             if (!this.props.isOutdatedWrappedEther) {
-                this.props.dispatcher.replaceTokenBalanceByAddress(token.address, balance);
+                this.props.refetchEthTokenStateAsync();
             }
             this.props.onConversionSuccessful();
         } catch (err) {
diff --git a/packages/website/ts/components/eth_wrappers.tsx b/packages/website/ts/components/eth_wrappers.tsx
index d074ec787..460a6cae3 100644
--- a/packages/website/ts/components/eth_wrappers.tsx
+++ b/packages/website/ts/components/eth_wrappers.tsx
@@ -41,12 +41,14 @@ interface EthWrappersProps {
     blockchain: Blockchain;
     dispatcher: Dispatcher;
     tokenByAddress: TokenByAddress;
-    tokenStateByAddress: TokenStateByAddress;
     userAddress: string;
     userEtherBalance: BigNumber;
+    lastForceTokenStateRefetch: number;
 }
 
 interface EthWrappersState {
+    ethTokenState: TokenState;
+    isWethStateLoaded: boolean;
     outdatedWETHAddressToIsStateLoaded: OutdatedWETHAddressToIsStateLoaded;
     outdatedWETHStateByAddress: OutdatedWETHStateByAddress;
 }
@@ -67,18 +69,31 @@ export class EthWrappers extends React.Component<EthWrappersProps, EthWrappersSt
         this.state = {
             outdatedWETHAddressToIsStateLoaded,
             outdatedWETHStateByAddress,
+            isWethStateLoaded: false,
+            ethTokenState: {
+                balance: new BigNumber(0),
+                allowance: new BigNumber(0),
+            },
         };
     }
+    public componentWillReceiveProps(nextProps: EthWrappersProps) {
+        if (
+            nextProps.userAddress !== this.props.userAddress ||
+            nextProps.networkId !== this.props.networkId ||
+            nextProps.lastForceTokenStateRefetch !== this.props.lastForceTokenStateRefetch
+        ) {
+            // tslint:disable-next-line:no-floating-promises
+            this._fetchWETHStateAsync();
+        }
+    }
     public componentDidMount() {
         window.scrollTo(0, 0);
         // tslint:disable-next-line:no-floating-promises
-        this._fetchOutdatedWETHStateAsync();
+        this._fetchWETHStateAsync();
     }
     public render() {
-        const tokens = _.values(this.props.tokenByAddress);
-        const etherToken = _.find(tokens, { symbol: 'WETH' });
-        const etherTokenState = this.props.tokenStateByAddress[etherToken.address];
-        const wethBalance = ZeroEx.toUnitAmount(etherTokenState.balance, constants.DECIMAL_PLACES_ETH);
+        const etherToken = this._getEthToken();
+        const wethBalance = ZeroEx.toUnitAmount(this.state.ethTokenState.balance, constants.DECIMAL_PLACES_ETH);
         const isBidirectional = true;
         const etherscanUrl = utils.getEtherScanLinkIfExists(
             etherToken.address,
@@ -136,10 +151,14 @@ export class EthWrappers extends React.Component<EthWrappersProps, EthWrappersSt
                                     </TableRowColumn>
                                     <TableRowColumn>
                                         <EthWethConversionButton
+                                            refetchEthTokenStateAsync={this._refetchEthTokenStateAsync.bind(this)}
+                                            lastForceTokenStateRefetch={this.props.lastForceTokenStateRefetch}
+                                            userAddress={this.props.userAddress}
+                                            networkId={this.props.networkId}
                                             isOutdatedWrappedEther={false}
                                             direction={Side.Deposit}
                                             ethToken={etherToken}
-                                            ethTokenState={etherTokenState}
+                                            ethTokenState={this.state.ethTokenState}
                                             dispatcher={this.props.dispatcher}
                                             blockchain={this.props.blockchain}
                                             userEtherBalance={this.props.userEtherBalance}
@@ -150,13 +169,24 @@ export class EthWrappers extends React.Component<EthWrappersProps, EthWrappersSt
                                     <TableRowColumn className="py1">
                                         {this._renderTokenLink(tokenLabel, etherscanUrl)}
                                     </TableRowColumn>
-                                    <TableRowColumn>{wethBalance.toFixed(PRECISION)} WETH</TableRowColumn>
+                                    <TableRowColumn>
+                                        {this.state.isWethStateLoaded ? (
+                                            `${wethBalance.toFixed(PRECISION)} WETH`
+                                        ) : (
+                                            <i className="zmdi zmdi-spinner zmdi-hc-spin" />
+                                        )}
+                                    </TableRowColumn>
                                     <TableRowColumn>
                                         <EthWethConversionButton
+                                            refetchEthTokenStateAsync={this._refetchEthTokenStateAsync.bind(this)}
+                                            lastForceTokenStateRefetch={this.props.lastForceTokenStateRefetch}
+                                            userAddress={this.props.userAddress}
+                                            networkId={this.props.networkId}
                                             isOutdatedWrappedEther={false}
                                             direction={Side.Receive}
+                                            isDisabled={!this.state.isWethStateLoaded}
                                             ethToken={etherToken}
-                                            ethTokenState={etherTokenState}
+                                            ethTokenState={this.state.ethTokenState}
                                             dispatcher={this.props.dispatcher}
                                             blockchain={this.props.blockchain}
                                             userEtherBalance={this.props.userEtherBalance}
@@ -190,7 +220,7 @@ export class EthWrappers extends React.Component<EthWrappersProps, EthWrappersSt
                                 </TableRow>
                             </TableHeader>
                             <TableBody displayRowCheckbox={false}>
-                                {this._renderOutdatedWeths(etherToken, etherTokenState)}
+                                {this._renderOutdatedWeths(etherToken, this.state.ethTokenState)}
                             </TableBody>
                         </Table>
                     </div>
@@ -269,6 +299,10 @@ export class EthWrappers extends React.Component<EthWrappersProps, EthWrappersSt
                         </TableRowColumn>
                         <TableRowColumn>
                             <EthWethConversionButton
+                                refetchEthTokenStateAsync={this._refetchEthTokenStateAsync.bind(this)}
+                                lastForceTokenStateRefetch={this.props.lastForceTokenStateRefetch}
+                                userAddress={this.props.userAddress}
+                                networkId={this.props.networkId}
                                 isDisabled={!isStateLoaded}
                                 isOutdatedWrappedEther={true}
                                 direction={Side.Receive}
@@ -338,7 +372,14 @@ export class EthWrappers extends React.Component<EthWrappersProps, EthWrappersSt
             },
         });
     }
-    private async _fetchOutdatedWETHStateAsync() {
+    private async _fetchWETHStateAsync() {
+        const tokens = _.values(this.props.tokenByAddress);
+        const wethToken = _.find(tokens, token => token.symbol === 'WETH');
+        const [wethBalance, wethAllowance] = await this.props.blockchain.getTokenBalanceAndAllowanceAsync(
+            this.props.userAddress,
+            wethToken.address,
+        );
+
         const outdatedWETHAddresses = this._getOutdatedWETHAddresses();
         const outdatedWETHAddressToIsStateLoaded: OutdatedWETHAddressToIsStateLoaded = {};
         const outdatedWETHStateByAddress: OutdatedWETHStateByAddress = {};
@@ -356,6 +397,11 @@ export class EthWrappers extends React.Component<EthWrappersProps, EthWrappersSt
         this.setState({
             outdatedWETHStateByAddress,
             outdatedWETHAddressToIsStateLoaded,
+            ethTokenState: {
+                balance: wethBalance,
+                allowance: wethAllowance,
+            },
+            isWethStateLoaded: true,
         });
     }
     private _getOutdatedWETHAddresses(): string[] {
@@ -371,4 +417,22 @@ export class EthWrappers extends React.Component<EthWrappersProps, EthWrappersSt
         );
         return outdatedWETHAddresses;
     }
+    private _getEthToken() {
+        const tokens = _.values(this.props.tokenByAddress);
+        const etherToken = _.find(tokens, { symbol: 'WETH' });
+        return etherToken;
+    }
+    private async _refetchEthTokenStateAsync() {
+        const etherToken = this._getEthToken();
+        const [balance, allowance] = await this.props.blockchain.getTokenBalanceAndAllowanceAsync(
+            this.props.userAddress,
+            etherToken.address,
+        );
+        this.setState({
+            ethTokenState: {
+                balance,
+                allowance,
+            },
+        });
+    }
 } // tslint:disable:max-file-line-count
diff --git a/packages/website/ts/components/fill_order.tsx b/packages/website/ts/components/fill_order.tsx
index 28488f399..1e9927c1a 100644
--- a/packages/website/ts/components/fill_order.tsx
+++ b/packages/website/ts/components/fill_order.tsx
@@ -19,7 +19,7 @@ import { VisualOrder } from 'ts/components/visual_order';
 import { Dispatcher } from 'ts/redux/dispatcher';
 import { orderSchema } from 'ts/schemas/order_schema';
 import { SchemaValidator } from 'ts/schemas/validator';
-import { AlertTypes, BlockchainErrs, Order, Token, TokenByAddress, TokenStateByAddress, WebsitePaths } from 'ts/types';
+import { AlertTypes, BlockchainErrs, Order, Token, TokenByAddress, WebsitePaths } from 'ts/types';
 import { colors } from 'ts/utils/colors';
 import { constants } from 'ts/utils/constants';
 import { errorReporter } from 'ts/utils/error_reporter';
@@ -33,9 +33,9 @@ interface FillOrderProps {
     networkId: number;
     userAddress: string;
     tokenByAddress: TokenByAddress;
-    tokenStateByAddress: TokenStateByAddress;
     initialOrder: Order;
     dispatcher: Dispatcher;
+    lastForceTokenStateRefetch: number;
 }
 
 interface FillOrderState {
@@ -185,7 +185,6 @@ export class FillOrder extends React.Component<FillOrderProps, FillOrderState> {
             symbol: takerToken.symbol,
         };
         const fillToken = this.props.tokenByAddress[takerToken.address];
-        const fillTokenState = this.props.tokenStateByAddress[takerToken.address];
         const makerTokenAddress = this.state.parsedOrder.maker.token.address;
         const makerToken = this.props.tokenByAddress[makerTokenAddress];
         const makerAssetToken = {
@@ -249,14 +248,17 @@ export class FillOrder extends React.Component<FillOrderProps, FillOrderState> {
                 {!isUserMaker && (
                     <div className="clearfix mx-auto relative" style={{ width: 235, height: 108 }}>
                         <TokenAmountInput
+                            blockchain={this.props.blockchain}
+                            userAddress={this.props.userAddress}
+                            networkId={this.props.networkId}
                             label="Fill amount"
                             onChange={this._onFillAmountChange.bind(this)}
                             shouldShowIncompleteErrs={false}
                             token={fillToken}
-                            tokenState={fillTokenState}
                             amount={fillAssetToken.amount}
                             shouldCheckBalance={true}
                             shouldCheckAllowance={true}
+                            lastForceTokenStateRefetch={this.props.lastForceTokenStateRefetch}
                         />
                         <div
                             className="absolute sm-hide xs-hide"
@@ -556,11 +558,8 @@ export class FillOrder extends React.Component<FillOrderProps, FillOrderState> {
                 signedOrder,
                 this.props.orderFillAmount,
             );
-            // After fill completes, let's update the token balances
-            const makerToken = this.props.tokenByAddress[parsedOrder.maker.token.address];
-            const takerToken = this.props.tokenByAddress[parsedOrder.taker.token.address];
-            const tokens = [makerToken, takerToken];
-            await this.props.blockchain.updateTokenBalancesAndAllowancesAsync(tokens);
+            // After fill completes, let's force fetch the token balances
+            this.props.dispatcher.forceTokenStateRefetch();
             this.setState({
                 isFilling: false,
                 didFillOrderSucceed: true,
diff --git a/packages/website/ts/components/generate_order/asset_picker.tsx b/packages/website/ts/components/generate_order/asset_picker.tsx
index df7d87cfd..8d4eaab40 100644
--- a/packages/website/ts/components/generate_order/asset_picker.tsx
+++ b/packages/website/ts/components/generate_order/asset_picker.tsx
@@ -223,10 +223,7 @@ export class AssetPicker extends React.Component<AssetPickerProps, AssetPickerSt
             assetView: AssetViews.NEW_TOKEN_FORM,
         });
     }
-    private _onNewTokenSubmitted(newToken: Token, newTokenState: TokenState) {
-        this.props.dispatcher.updateTokenStateByAddress({
-            [newToken.address]: newTokenState,
-        });
+    private _onNewTokenSubmitted(newToken: Token) {
         trackedTokenStorage.addTrackedTokenToUser(this.props.userAddress, this.props.networkId, newToken);
         this.props.dispatcher.addTokenToTokenByAddress(newToken);
         this.setState({
@@ -256,15 +253,6 @@ export class AssetPicker extends React.Component<AssetPickerProps, AssetPickerSt
         newTokenEntry.isTracked = true;
         trackedTokenStorage.addTrackedTokenToUser(this.props.userAddress, this.props.networkId, newTokenEntry);
 
-        const [balance, allowance] = await this.props.blockchain.getCurrentUserTokenBalanceAndAllowanceAsync(
-            token.address,
-        );
-        this.props.dispatcher.updateTokenStateByAddress({
-            [token.address]: {
-                balance,
-                allowance,
-            },
-        });
         this.props.dispatcher.updateTokenByAddress([newTokenEntry]);
         this.setState({
             isAddingTokenToTracked: false,
diff --git a/packages/website/ts/components/generate_order/generate_order_form.tsx b/packages/website/ts/components/generate_order/generate_order_form.tsx
index 3ae0d48a7..1f6b4c6c0 100644
--- a/packages/website/ts/components/generate_order/generate_order_form.tsx
+++ b/packages/website/ts/components/generate_order/generate_order_form.tsx
@@ -53,7 +53,7 @@ interface GenerateOrderFormProps {
     orderSalt: BigNumber;
     sideToAssetToken: SideToAssetToken;
     tokenByAddress: TokenByAddress;
-    tokenStateByAddress: TokenStateByAddress;
+    lastForceTokenStateRefetch: number;
 }
 
 interface GenerateOrderFormState {
@@ -80,10 +80,8 @@ export class GenerateOrderForm extends React.Component<GenerateOrderFormProps, G
         const dispatcher = this.props.dispatcher;
         const depositTokenAddress = this.props.sideToAssetToken[Side.Deposit].address;
         const depositToken = this.props.tokenByAddress[depositTokenAddress];
-        const depositTokenState = this.props.tokenStateByAddress[depositTokenAddress];
         const receiveTokenAddress = this.props.sideToAssetToken[Side.Receive].address;
         const receiveToken = this.props.tokenByAddress[receiveTokenAddress];
-        const receiveTokenState = this.props.tokenStateByAddress[receiveTokenAddress];
         const takerExplanation =
             'If a taker is specified, only they are<br> \
                                   allowed to fill this order. If no taker is<br> \
@@ -110,9 +108,12 @@ export class GenerateOrderForm extends React.Component<GenerateOrderFormProps, G
                                     tokenByAddress={this.props.tokenByAddress}
                                 />
                                 <TokenAmountInput
+                                    lastForceTokenStateRefetch={this.props.lastForceTokenStateRefetch}
+                                    blockchain={this.props.blockchain}
+                                    userAddress={this.props.userAddress}
+                                    networkId={this.props.networkId}
                                     label="Sell amount"
                                     token={depositToken}
-                                    tokenState={depositTokenState}
                                     amount={this.props.sideToAssetToken[Side.Deposit].amount}
                                     onChange={this._onTokenAmountChange.bind(this, depositToken, Side.Deposit)}
                                     shouldShowIncompleteErrs={this.state.shouldShowIncompleteErrs}
@@ -139,9 +140,12 @@ export class GenerateOrderForm extends React.Component<GenerateOrderFormProps, G
                                     tokenByAddress={this.props.tokenByAddress}
                                 />
                                 <TokenAmountInput
+                                    lastForceTokenStateRefetch={this.props.lastForceTokenStateRefetch}
+                                    blockchain={this.props.blockchain}
+                                    userAddress={this.props.userAddress}
+                                    networkId={this.props.networkId}
                                     label="Receive amount"
                                     token={receiveToken}
-                                    tokenState={receiveTokenState}
                                     amount={this.props.sideToAssetToken[Side.Receive].amount}
                                     onChange={this._onTokenAmountChange.bind(this, receiveToken, Side.Receive)}
                                     shouldShowIncompleteErrs={this.state.shouldShowIncompleteErrs}
@@ -242,8 +246,10 @@ export class GenerateOrderForm extends React.Component<GenerateOrderFormProps, G
 
         // Check if all required inputs were supplied
         const debitToken = this.props.sideToAssetToken[Side.Deposit];
-        const debitBalance = this.props.tokenStateByAddress[debitToken.address].balance;
-        const debitAllowance = this.props.tokenStateByAddress[debitToken.address].allowance;
+        const [debitBalance, debitAllowance] = await this.props.blockchain.getTokenBalanceAndAllowanceAsync(
+            this.props.userAddress,
+            debitToken.address,
+        );
         const receiveAmount = this.props.sideToAssetToken[Side.Receive].amount;
         if (
             !_.isUndefined(debitToken.amount) &&
diff --git a/packages/website/ts/components/generate_order/new_token_form.tsx b/packages/website/ts/components/generate_order/new_token_form.tsx
index 63645be9a..44712b27b 100644
--- a/packages/website/ts/components/generate_order/new_token_form.tsx
+++ b/packages/website/ts/components/generate_order/new_token_form.tsx
@@ -13,7 +13,7 @@ import { colors } from 'ts/utils/colors';
 interface NewTokenFormProps {
     blockchain: Blockchain;
     tokenByAddress: TokenByAddress;
-    onNewTokenSubmitted: (token: Token, tokenState: TokenState) => void;
+    onNewTokenSubmitted: (token: Token) => void;
 }
 
 interface NewTokenFormState {
@@ -110,13 +110,9 @@ export class NewTokenForm extends React.Component<NewTokenFormProps, NewTokenFor
         }
 
         let hasBalanceAllowanceErr = false;
-        let balance = new BigNumber(0);
-        let allowance = new BigNumber(0);
         if (doesContractExist) {
             try {
-                [balance, allowance] = await this.props.blockchain.getCurrentUserTokenBalanceAndAllowanceAsync(
-                    this.state.address,
-                );
+                await this.props.blockchain.getCurrentUserTokenBalanceAndAllowanceAsync(this.state.address);
             } catch (err) {
                 hasBalanceAllowanceErr = true;
             }
@@ -155,11 +151,7 @@ export class NewTokenForm extends React.Component<NewTokenFormProps, NewTokenFor
             isTracked: true,
             isRegistered: false,
         };
-        const newTokenState: TokenState = {
-            balance,
-            allowance,
-        };
-        this.props.onNewTokenSubmitted(newToken, newTokenState);
+        this.props.onNewTokenSubmitted(newToken);
     }
     private _onTokenNameChanged(e: any, name: string) {
         let nameErrText = '';
diff --git a/packages/website/ts/components/inputs/allowance_toggle.tsx b/packages/website/ts/components/inputs/allowance_toggle.tsx
index d8852c11f..45531e74b 100644
--- a/packages/website/ts/components/inputs/allowance_toggle.tsx
+++ b/packages/website/ts/components/inputs/allowance_toggle.tsx
@@ -17,6 +17,8 @@ interface AllowanceToggleProps {
     token: Token;
     tokenState: TokenState;
     userAddress: string;
+    isDisabled: boolean;
+    refetchTokenStateAsync: () => Promise<void>;
 }
 
 interface AllowanceToggleState {
@@ -45,7 +47,7 @@ export class AllowanceToggle extends React.Component<AllowanceToggleProps, Allow
             <div className="flex">
                 <div>
                     <Toggle
-                        disabled={this.state.isSpinnerVisible}
+                        disabled={this.state.isSpinnerVisible || this.props.isDisabled}
                         toggled={this._isAllowanceSet()}
                         onToggle={this._onToggleAllowanceAsync.bind(this)}
                     />
@@ -73,6 +75,7 @@ export class AllowanceToggle extends React.Component<AllowanceToggleProps, Allow
         }
         try {
             await this.props.blockchain.setProxyAllowanceAsync(this.props.token, newAllowanceAmountInBaseUnits);
+            await this.props.refetchTokenStateAsync();
         } catch (err) {
             this.setState({
                 isSpinnerVisible: false,
diff --git a/packages/website/ts/components/inputs/balance_bounded_input.tsx b/packages/website/ts/components/inputs/balance_bounded_input.tsx
index ddc434b51..67d5b781e 100644
--- a/packages/website/ts/components/inputs/balance_bounded_input.tsx
+++ b/packages/website/ts/components/inputs/balance_bounded_input.tsx
@@ -18,6 +18,7 @@ interface BalanceBoundedInputProps {
     validate?: (amount: BigNumber) => InputErrMsg;
     onVisitBalancesPageClick?: () => void;
     shouldHideVisitBalancesLink?: boolean;
+    isDisabled?: boolean;
 }
 
 interface BalanceBoundedInputState {
@@ -29,6 +30,7 @@ export class BalanceBoundedInput extends React.Component<BalanceBoundedInputProp
     public static defaultProps: Partial<BalanceBoundedInputProps> = {
         shouldShowIncompleteErrs: false,
         shouldHideVisitBalancesLink: false,
+        isDisabled: false,
     };
     constructor(props: BalanceBoundedInputProps) {
         super(props);
@@ -88,6 +90,7 @@ export class BalanceBoundedInput extends React.Component<BalanceBoundedInputProp
                 hintText={<span style={{ textTransform: 'capitalize' }}>amount</span>}
                 onChange={this._onValueChange.bind(this)}
                 underlineStyle={{ width: 'calc(100% + 50px)' }}
+                disabled={this.props.isDisabled}
             />
         );
     }
diff --git a/packages/website/ts/components/inputs/token_amount_input.tsx b/packages/website/ts/components/inputs/token_amount_input.tsx
index 63966d759..f41d42d02 100644
--- a/packages/website/ts/components/inputs/token_amount_input.tsx
+++ b/packages/website/ts/components/inputs/token_amount_input.tsx
@@ -3,13 +3,16 @@ import { BigNumber } from '@0xproject/utils';
 import * as _ from 'lodash';
 import * as React from 'react';
 import { Link } from 'react-router-dom';
+import { Blockchain } from 'ts/blockchain';
 import { BalanceBoundedInput } from 'ts/components/inputs/balance_bounded_input';
 import { InputErrMsg, Token, TokenState, ValidatedBigNumberCallback, WebsitePaths } from 'ts/types';
 import { colors } from 'ts/utils/colors';
 
 interface TokenAmountInputProps {
+    userAddress: string;
+    networkId: number;
+    blockchain: Blockchain;
     token: Token;
-    tokenState: TokenState;
     label?: string;
     amount?: BigNumber;
     shouldShowIncompleteErrs: boolean;
@@ -17,11 +20,39 @@ interface TokenAmountInputProps {
     shouldCheckAllowance: boolean;
     onChange: ValidatedBigNumberCallback;
     onVisitBalancesPageClick?: () => void;
+    lastForceTokenStateRefetch: number;
 }
 
-interface TokenAmountInputState {}
+interface TokenAmountInputState {
+    balance: BigNumber;
+    allowance: BigNumber;
+    isBalanceAndAllowanceLoaded: boolean;
+}
 
 export class TokenAmountInput extends React.Component<TokenAmountInputProps, TokenAmountInputState> {
+    constructor(props: TokenAmountInputProps) {
+        super(props);
+        const defaultAmount = new BigNumber(0);
+        this.state = {
+            balance: defaultAmount,
+            allowance: defaultAmount,
+            isBalanceAndAllowanceLoaded: false,
+        };
+    }
+    public componentWillMount() {
+        // tslint:disable-next-line:no-floating-promises
+        this._fetchBalanceAndAllowanceAsync(this.props.token.address);
+    }
+    public componentWillReceiveProps(nextProps: TokenAmountInputProps) {
+        if (
+            nextProps.userAddress !== this.props.userAddress ||
+            nextProps.networkId !== this.props.networkId ||
+            nextProps.token.address !== this.props.token.address ||
+            nextProps.lastForceTokenStateRefetch !== this.props.lastForceTokenStateRefetch
+        ) {
+            this._fetchBalanceAndAllowanceAsync(nextProps.token.address);
+        }
+    }
     public render() {
         const amount = this.props.amount
             ? ZeroEx.toUnitAmount(this.props.amount, this.props.token.decimals)
@@ -32,12 +63,13 @@ export class TokenAmountInput extends React.Component<TokenAmountInputProps, Tok
                 <BalanceBoundedInput
                     label={this.props.label}
                     amount={amount}
-                    balance={ZeroEx.toUnitAmount(this.props.tokenState.balance, this.props.token.decimals)}
+                    balance={ZeroEx.toUnitAmount(this.state.balance, this.props.token.decimals)}
                     onChange={this._onChange.bind(this)}
                     validate={this._validate.bind(this)}
                     shouldCheckBalance={this.props.shouldCheckBalance}
                     shouldShowIncompleteErrs={this.props.shouldShowIncompleteErrs}
                     onVisitBalancesPageClick={this.props.onVisitBalancesPageClick}
+                    isDisabled={!this.state.isBalanceAndAllowanceLoaded}
                 />
                 <div style={{ paddingTop: hasLabel ? 39 : 14 }}>{this.props.token.symbol}</div>
             </div>
@@ -51,7 +83,7 @@ export class TokenAmountInput extends React.Component<TokenAmountInputProps, Tok
         this.props.onChange(isValid, baseUnitAmount);
     }
     private _validate(amount: BigNumber): InputErrMsg {
-        if (this.props.shouldCheckAllowance && amount.gt(this.props.tokenState.allowance)) {
+        if (this.props.shouldCheckAllowance && amount.gt(this.state.allowance)) {
             return (
                 <span>
                     Insufficient allowance.{' '}
@@ -67,4 +99,18 @@ export class TokenAmountInput extends React.Component<TokenAmountInputProps, Tok
             return undefined;
         }
     }
+    private async _fetchBalanceAndAllowanceAsync(tokenAddress: string) {
+        this.setState({
+            isBalanceAndAllowanceLoaded: false,
+        });
+        const [balance, allowance] = await this.props.blockchain.getTokenBalanceAndAllowanceAsync(
+            this.props.userAddress,
+            tokenAddress,
+        );
+        this.setState({
+            balance,
+            allowance,
+            isBalanceAndAllowanceLoaded: true,
+        });
+    }
 }
diff --git a/packages/website/ts/components/portal.tsx b/packages/website/ts/components/portal.tsx
index 5975569c4..e8190e2f5 100644
--- a/packages/website/ts/components/portal.tsx
+++ b/packages/website/ts/components/portal.tsx
@@ -56,13 +56,13 @@ export interface PortalAllProps {
     providerType: ProviderType;
     screenWidth: ScreenWidths;
     tokenByAddress: TokenByAddress;
-    tokenStateByAddress: TokenStateByAddress;
     userEtherBalance: BigNumber;
     userAddress: string;
     shouldBlockchainErrDialogBeOpen: boolean;
     userSuppliedOrderCache: Order;
     location: Location;
     flashMessage?: string | React.ReactNode;
+    lastForceTokenStateRefetch: number;
 }
 
 interface PortalAllState {
@@ -132,12 +132,6 @@ export class Portal extends React.Component<PortalAllProps, PortalAllState> {
         if (nextProps.userAddress !== this.state.prevUserAddress) {
             // tslint:disable-next-line:no-floating-promises
             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(trackedTokens);
-            }
             this.setState({
                 prevUserAddress: nextProps.userAddress,
             });
@@ -280,9 +274,9 @@ export class Portal extends React.Component<PortalAllProps, PortalAllState> {
                 blockchain={this._blockchain}
                 dispatcher={this.props.dispatcher}
                 tokenByAddress={this.props.tokenByAddress}
-                tokenStateByAddress={this.props.tokenStateByAddress}
                 userAddress={this.props.userAddress}
                 userEtherBalance={this.props.userEtherBalance}
+                lastForceTokenStateRefetch={this.props.lastForceTokenStateRefetch}
             />
         );
     }
@@ -296,6 +290,8 @@ export class Portal extends React.Component<PortalAllProps, PortalAllState> {
         );
     }
     private _renderTokenBalances() {
+        const allTokens = _.values(this.props.tokenByAddress);
+        const trackedTokens = _.filter(allTokens, t => t.isTracked);
         return (
             <TokenBalances
                 blockchain={this._blockchain}
@@ -304,10 +300,11 @@ export class Portal extends React.Component<PortalAllProps, PortalAllState> {
                 dispatcher={this.props.dispatcher}
                 screenWidth={this.props.screenWidth}
                 tokenByAddress={this.props.tokenByAddress}
-                tokenStateByAddress={this.props.tokenStateByAddress}
+                trackedTokens={trackedTokens}
                 userAddress={this.props.userAddress}
                 userEtherBalance={this.props.userEtherBalance}
                 networkId={this.props.networkId}
+                lastForceTokenStateRefetch={this.props.lastForceTokenStateRefetch}
             />
         );
     }
@@ -325,8 +322,8 @@ export class Portal extends React.Component<PortalAllProps, PortalAllState> {
                 networkId={this.props.networkId}
                 userAddress={this.props.userAddress}
                 tokenByAddress={this.props.tokenByAddress}
-                tokenStateByAddress={this.props.tokenStateByAddress}
                 dispatcher={this.props.dispatcher}
+                lastForceTokenStateRefetch={this.props.lastForceTokenStateRefetch}
             />
         );
     }
@@ -382,9 +379,4 @@ export class Portal extends React.Component<PortalAllProps, PortalAllState> {
         const newScreenWidth = utils.getScreenWidth();
         this.props.dispatcher.updateScreenWidth(newScreenWidth);
     }
-    private async _updateBalanceAndAllowanceWithLoadingScreenAsync(tokens: Token[]) {
-        this.props.dispatcher.updateBlockchainIsLoaded(false);
-        await this._blockchain.updateTokenBalancesAndAllowancesAsync(tokens);
-        this.props.dispatcher.updateBlockchainIsLoaded(true);
-    }
 }
diff --git a/packages/website/ts/components/send_button.tsx b/packages/website/ts/components/send_button.tsx
index 7c0c7c083..f13e8ecce 100644
--- a/packages/website/ts/components/send_button.tsx
+++ b/packages/website/ts/components/send_button.tsx
@@ -10,11 +10,15 @@ import { errorReporter } from 'ts/utils/error_reporter';
 import { utils } from 'ts/utils/utils';
 
 interface SendButtonProps {
+    userAddress: string;
+    networkId: number;
     token: Token;
     tokenState: TokenState;
     dispatcher: Dispatcher;
     blockchain: Blockchain;
     onError: () => void;
+    lastForceTokenStateRefetch: number;
+    refetchTokenStateAsync: (tokenAddress: string) => Promise<void>;
 }
 
 interface SendButtonState {
@@ -42,11 +46,14 @@ export class SendButton extends React.Component<SendButtonProps, SendButtonState
                     onClick={this._toggleSendDialog.bind(this)}
                 />
                 <SendDialog
+                    blockchain={this.props.blockchain}
+                    userAddress={this.props.userAddress}
+                    networkId={this.props.networkId}
                     isOpen={this.state.isSendDialogVisible}
                     onComplete={this._onSendAmountSelectedAsync.bind(this)}
                     onCancelled={this._toggleSendDialog.bind(this)}
                     token={this.props.token}
-                    tokenState={this.props.tokenState}
+                    lastForceTokenStateRefetch={this.props.lastForceTokenStateRefetch}
                 />
             </div>
         );
@@ -63,11 +70,9 @@ export class SendButton extends React.Component<SendButtonProps, SendButtonState
         this._toggleSendDialog();
         const token = this.props.token;
         const tokenState = this.props.tokenState;
-        let balance = tokenState.balance;
         try {
             await this.props.blockchain.transferAsync(token, recipient, value);
-            balance = balance.minus(value);
-            this.props.dispatcher.replaceTokenBalanceByAddress(token.address, balance);
+            this.props.refetchTokenStateAsync(token.address);
         } catch (err) {
             const errMsg = `${err}`;
             if (_.includes(errMsg, BlockchainCallErrs.UserHasNoAssociatedAddresses)) {
diff --git a/packages/website/ts/components/token_balances.tsx b/packages/website/ts/components/token_balances.tsx
index 88f86fbf5..5b450c772 100644
--- a/packages/website/ts/components/token_balances.tsx
+++ b/packages/website/ts/components/token_balances.tsx
@@ -31,7 +31,6 @@ import {
     Styles,
     Token,
     TokenByAddress,
-    TokenStateByAddress,
     TokenVisibility,
 } from 'ts/types';
 import { colors } from 'ts/utils/colors';
@@ -58,6 +57,14 @@ const styles: Styles = {
     },
 };
 
+interface TokenStateByAddress {
+    [address: string]: {
+        balance: BigNumber;
+        allowance: BigNumber;
+        isLoaded: boolean;
+    };
+}
+
 interface TokenBalancesProps {
     blockchain: Blockchain;
     blockchainErr: BlockchainErrs;
@@ -65,10 +72,11 @@ interface TokenBalancesProps {
     dispatcher: Dispatcher;
     screenWidth: ScreenWidths;
     tokenByAddress: TokenByAddress;
-    tokenStateByAddress: TokenStateByAddress;
+    trackedTokens: Token[];
     userAddress: string;
     userEtherBalance: BigNumber;
     networkId: number;
+    lastForceTokenStateRefetch: number;
 }
 
 interface TokenBalancesState {
@@ -76,14 +84,15 @@ interface TokenBalancesState {
     isBalanceSpinnerVisible: boolean;
     isDharmaDialogVisible: boolean;
     isZRXSpinnerVisible: boolean;
-    currentZrxBalance?: BigNumber;
     isTokenPickerOpen: boolean;
     isAddingToken: boolean;
+    trackedTokenStateByAddress: TokenStateByAddress;
 }
 
 export class TokenBalances extends React.Component<TokenBalancesProps, TokenBalancesState> {
     public constructor(props: TokenBalancesProps) {
         super(props);
+        const initialTrackedTokenStateByAddress = this._getInitialTrackedTokenStateByAddress(props.trackedTokens);
         this.state = {
             errorType: undefined,
             isBalanceSpinnerVisible: false,
@@ -91,8 +100,14 @@ export class TokenBalances extends React.Component<TokenBalancesProps, TokenBala
             isDharmaDialogVisible: DharmaLoanFrame.isAuthTokenPresent(),
             isTokenPickerOpen: false,
             isAddingToken: false,
+            trackedTokenStateByAddress: initialTrackedTokenStateByAddress,
         };
     }
+    public componentWillMount() {
+        // tslint:disable-next-line:no-floating-promises
+        const trackedTokenAddresses = _.keys(this.state.trackedTokenStateByAddress);
+        this._fetchBalancesAndAllowancesAsync(trackedTokenAddresses);
+    }
     public componentWillReceiveProps(nextProps: TokenBalancesProps) {
         if (nextProps.userEtherBalance !== this.props.userEtherBalance) {
             if (this.state.isBalanceSpinnerVisible) {
@@ -103,18 +118,21 @@ export class TokenBalances extends React.Component<TokenBalancesProps, TokenBala
                 isBalanceSpinnerVisible: false,
             });
         }
-        const nextZrxToken = _.find(_.values(nextProps.tokenByAddress), t => t.symbol === ZRX_TOKEN_SYMBOL);
-        const nextZrxTokenBalance = nextProps.tokenStateByAddress[nextZrxToken.address].balance;
-        if (!_.isUndefined(this.state.currentZrxBalance) && !nextZrxTokenBalance.eq(this.state.currentZrxBalance)) {
-            if (this.state.isZRXSpinnerVisible) {
-                const receivedAmount = nextZrxTokenBalance.minus(this.state.currentZrxBalance);
-                const receiveAmountInUnits = ZeroEx.toUnitAmount(receivedAmount, constants.DECIMAL_PLACES_ZRX);
-                this.props.dispatcher.showFlashMessage(`Received ${receiveAmountInUnits.toString(10)} Kovan ZRX`);
-            }
-            this.setState({
-                isZRXSpinnerVisible: false,
-                currentZrxBalance: undefined,
-            });
+
+        if (
+            nextProps.userAddress !== this.props.userAddress ||
+            nextProps.networkId !== this.props.networkId ||
+            nextProps.lastForceTokenStateRefetch !== this.props.lastForceTokenStateRefetch
+        ) {
+            const trackedTokenAddresses = _.keys(this.state.trackedTokenStateByAddress);
+            // tslint:disable-next-line:no-floating-promises
+            this._fetchBalancesAndAllowancesAsync(trackedTokenAddresses);
+        }
+
+        if (!_.isEqual(nextProps.trackedTokens, this.props.trackedTokens)) {
+            const newTokens = _.difference(nextProps.trackedTokens, this.props.trackedTokens);
+            const newTokenAddresses = _.map(newTokens, token => token.address);
+            this._fetchBalancesAndAllowancesAsync(newTokenAddresses);
         }
     }
     public componentDidMount() {
@@ -303,8 +321,7 @@ export class TokenBalances extends React.Component<TokenBalancesProps, TokenBala
         const isSmallScreen = this.props.screenWidth === ScreenWidths.Sm;
         const tokenColSpan = isSmallScreen ? TOKEN_COL_SPAN_SM : TOKEN_COL_SPAN_LG;
         const actionPaddingX = isSmallScreen ? 2 : 24;
-        const allTokens = _.values(this.props.tokenByAddress);
-        const trackedTokens = _.filter(allTokens, t => t.isTracked);
+        const trackedTokens = this.props.trackedTokens;
         const trackedTokensStartingWithEtherToken = trackedTokens.sort(
             firstBy((t: Token) => t.symbol !== ETHER_TOKEN_SYMBOL)
                 .thenBy((t: Token) => t.symbol !== ZRX_TOKEN_SYMBOL)
@@ -317,7 +334,7 @@ export class TokenBalances extends React.Component<TokenBalancesProps, TokenBala
         return tableRows;
     }
     private _renderTokenRow(tokenColSpan: number, actionPaddingX: number, token: Token) {
-        const tokenState = this.props.tokenStateByAddress[token.address];
+        const tokenState = this.state.trackedTokenStateByAddress[token.address];
         const tokenLink = utils.getEtherScanLinkIfExists(
             token.address,
             this.props.networkId,
@@ -338,13 +355,19 @@ export class TokenBalances extends React.Component<TokenBalancesProps, TokenBala
                     )}
                 </TableRowColumn>
                 <TableRowColumn style={{ paddingRight: 3, paddingLeft: 3 }}>
-                    {this._renderAmount(tokenState.balance, token.decimals)} {token.symbol}
-                    {this.state.isZRXSpinnerVisible &&
-                        token.symbol === ZRX_TOKEN_SYMBOL && (
-                            <span className="pl1">
-                                <i className="zmdi zmdi-spinner zmdi-hc-spin" />
-                            </span>
-                        )}
+                    {tokenState.isLoaded ? (
+                        <span>
+                            {this._renderAmount(tokenState.balance, token.decimals)} {token.symbol}
+                            {this.state.isZRXSpinnerVisible &&
+                                token.symbol === ZRX_TOKEN_SYMBOL && (
+                                    <span className="pl1">
+                                        <i className="zmdi zmdi-spinner zmdi-hc-spin" />
+                                    </span>
+                                )}
+                        </span>
+                    ) : (
+                        <i className="zmdi zmdi-spinner zmdi-hc-spin" />
+                    )}
                 </TableRowColumn>
                 <TableRowColumn>
                     <AllowanceToggle
@@ -354,6 +377,8 @@ export class TokenBalances extends React.Component<TokenBalancesProps, TokenBala
                         tokenState={tokenState}
                         onErrorOccurred={this._onErrorOccurred.bind(this)}
                         userAddress={this.props.userAddress}
+                        isDisabled={!tokenState.isLoaded}
+                        refetchTokenStateAsync={this._refetchTokenStateAsync.bind(this, token.address)}
                     />
                 </TableRowColumn>
                 <TableRowColumn style={{ paddingLeft: actionPaddingX, paddingRight: actionPaddingX }}>
@@ -383,11 +408,15 @@ export class TokenBalances extends React.Component<TokenBalancesProps, TokenBala
                         }}
                     >
                         <SendButton
+                            userAddress={this.props.userAddress}
+                            networkId={this.props.networkId}
                             blockchain={this.props.blockchain}
                             dispatcher={this.props.dispatcher}
                             token={token}
                             tokenState={tokenState}
                             onError={this._onSendFailed.bind(this)}
+                            lastForceTokenStateRefetch={this.props.lastForceTokenStateRefetch}
+                            refetchTokenStateAsync={this._refetchTokenStateAsync.bind(this, token.address)}
                         />
                     </TableRowColumn>
                 )}
@@ -414,7 +443,6 @@ export class TokenBalances extends React.Component<TokenBalancesProps, TokenBala
             } else {
                 this.props.dispatcher.removeTokenToTokenByAddress(token);
             }
-            this.props.dispatcher.removeFromTokenStateByAddress(tokenAddress);
             trackedTokenStorage.removeTrackedToken(this.props.userAddress, this.props.networkId, tokenAddress);
         } else if (isDefaultTrackedToken) {
             this.props.dispatcher.showFlashMessage(`Cannot remove ${token.name} because it's a default token`);
@@ -510,6 +538,7 @@ export class TokenBalances extends React.Component<TokenBalancesProps, TokenBala
     private async _onMintTestTokensAsync(token: Token): Promise<boolean> {
         try {
             await this.props.blockchain.mintTestTokensAsync(token);
+            await this._refetchTokenStateAsync(token.address);
             const amount = ZeroEx.toUnitAmount(constants.MINT_AMOUNT, token.decimals);
             this.props.dispatcher.showFlashMessage(`Successfully minted ${amount.toString(10)} ${token.symbol}`);
             return true;
@@ -569,15 +598,11 @@ export class TokenBalances extends React.Component<TokenBalancesProps, TokenBala
                 isBalanceSpinnerVisible: true,
             });
         } else {
-            const tokens = _.values(this.props.tokenByAddress);
-            const zrxToken = _.find(tokens, t => t.symbol === ZRX_TOKEN_SYMBOL);
-            const zrxTokenState = this.props.tokenStateByAddress[zrxToken.address];
             this.setState({
                 isZRXSpinnerVisible: true,
-                currentZrxBalance: zrxTokenState.balance,
             });
             // tslint:disable-next-line:no-floating-promises
-            this.props.blockchain.pollTokenBalanceAsync(zrxToken);
+            this._startPollingZrxBalanceAsync();
         }
         return true;
     }
@@ -603,4 +628,63 @@ export class TokenBalances extends React.Component<TokenBalancesProps, TokenBala
             isAddingToken: false,
         });
     }
+    private async _startPollingZrxBalanceAsync() {
+        const tokens = _.values(this.props.tokenByAddress);
+        const zrxToken = _.find(tokens, t => t.symbol === ZRX_TOKEN_SYMBOL);
+
+        // tslint:disable-next-line:no-floating-promises
+        const balance = await this.props.blockchain.pollTokenBalanceAsync(zrxToken);
+        const trackedTokenStateByAddress = this.state.trackedTokenStateByAddress;
+        trackedTokenStateByAddress[zrxToken.address] = {
+            ...trackedTokenStateByAddress[zrxToken.address],
+            balance,
+        };
+        this.setState({
+            isZRXSpinnerVisible: false,
+        });
+    }
+    private async _fetchBalancesAndAllowancesAsync(tokenAddresses: string[]) {
+        const trackedTokenStateByAddress = this.state.trackedTokenStateByAddress;
+        for (const tokenAddress of tokenAddresses) {
+            const [balance, allowance] = await this.props.blockchain.getTokenBalanceAndAllowanceAsync(
+                this.props.userAddress,
+                tokenAddress,
+            );
+            trackedTokenStateByAddress[tokenAddress] = {
+                balance,
+                allowance,
+                isLoaded: true,
+            };
+        }
+        this.setState({
+            trackedTokenStateByAddress,
+        });
+    }
+    private _getInitialTrackedTokenStateByAddress(trackedTokens: Token[]) {
+        const trackedTokenStateByAddress: TokenStateByAddress = {};
+        _.each(trackedTokens, token => {
+            trackedTokenStateByAddress[token.address] = {
+                balance: new BigNumber(0),
+                allowance: new BigNumber(0),
+                isLoaded: false,
+            };
+        });
+        return trackedTokenStateByAddress;
+    }
+    private async _refetchTokenStateAsync(tokenAddress: string) {
+        const [balance, allowance] = await this.props.blockchain.getTokenBalanceAndAllowanceAsync(
+            this.props.userAddress,
+            tokenAddress,
+        );
+        this.setState({
+            trackedTokenStateByAddress: {
+                ...this.state.trackedTokenStateByAddress,
+                [tokenAddress]: {
+                    balance,
+                    allowance,
+                    isLoaded: true,
+                },
+            },
+        });
+    }
 } // tslint:disable:max-file-line-count
diff --git a/packages/website/ts/components/top_bar/provider_picker.tsx b/packages/website/ts/components/top_bar/provider_picker.tsx
index ca98d8d05..418f8696b 100644
--- a/packages/website/ts/components/top_bar/provider_picker.tsx
+++ b/packages/website/ts/components/top_bar/provider_picker.tsx
@@ -81,7 +81,7 @@ export class ProviderPicker extends React.Component<ProviderPickerProps, Provide
         if (value === ProviderType.Ledger) {
             this.props.onToggleLedgerDialog();
         } else {
-            // Fire and forget
+            // tslint:disable-next-line:no-floating-promises
             this.props.blockchain.updateProviderToInjectedAsync();
         }
     }
diff --git a/packages/website/ts/containers/generate_order_form.tsx b/packages/website/ts/containers/generate_order_form.tsx
index 3fd31087f..af9f0da01 100644
--- a/packages/website/ts/containers/generate_order_form.tsx
+++ b/packages/website/ts/containers/generate_order_form.tsx
@@ -32,7 +32,7 @@ interface ConnectedState {
     networkId: number;
     sideToAssetToken: SideToAssetToken;
     tokenByAddress: TokenByAddress;
-    tokenStateByAddress: TokenStateByAddress;
+    lastForceTokenStateRefetch: number;
 }
 
 const mapStateToProps = (state: State, ownProps: GenerateOrderFormProps): ConnectedState => ({
@@ -45,8 +45,8 @@ const mapStateToProps = (state: State, ownProps: GenerateOrderFormProps): Connec
     networkId: state.networkId,
     sideToAssetToken: state.sideToAssetToken,
     tokenByAddress: state.tokenByAddress,
-    tokenStateByAddress: state.tokenStateByAddress,
     userAddress: state.userAddress,
+    lastForceTokenStateRefetch: state.lastForceTokenStateRefetch,
 });
 
 export const GenerateOrderForm: React.ComponentClass<GenerateOrderFormProps> = connect(mapStateToProps)(
diff --git a/packages/website/ts/containers/portal.tsx b/packages/website/ts/containers/portal.tsx
index 2c515aac4..9afe7fca3 100644
--- a/packages/website/ts/containers/portal.tsx
+++ b/packages/website/ts/containers/portal.tsx
@@ -28,7 +28,7 @@ interface ConnectedState {
     orderFillAmount: BigNumber;
     providerType: ProviderType;
     tokenByAddress: TokenByAddress;
-    tokenStateByAddress: TokenStateByAddress;
+    lastForceTokenStateRefetch: number;
     userEtherBalance: BigNumber;
     screenWidth: ScreenWidths;
     shouldBlockchainErrDialogBeOpen: boolean;
@@ -77,7 +77,7 @@ const mapStateToProps = (state: State, ownProps: PortalComponentAllProps): Conne
         screenWidth: state.screenWidth,
         shouldBlockchainErrDialogBeOpen: state.shouldBlockchainErrDialogBeOpen,
         tokenByAddress: state.tokenByAddress,
-        tokenStateByAddress: state.tokenStateByAddress,
+        lastForceTokenStateRefetch: state.lastForceTokenStateRefetch,
         userAddress: state.userAddress,
         userEtherBalance: state.userEtherBalance,
         userSuppliedOrderCache: state.userSuppliedOrderCache,
diff --git a/packages/website/ts/redux/dispatcher.ts b/packages/website/ts/redux/dispatcher.ts
index 42989e5e1..dea0a8bfe 100644
--- a/packages/website/ts/redux/dispatcher.ts
+++ b/packages/website/ts/redux/dispatcher.ts
@@ -131,43 +131,9 @@ export class Dispatcher {
             type: ActionTypes.UpdateTokenByAddress,
         });
     }
-    public updateTokenStateByAddress(tokenStateByAddress: TokenStateByAddress) {
+    public forceTokenStateRefetch() {
         this._dispatch({
-            data: tokenStateByAddress,
-            type: ActionTypes.UpdateTokenStateByAddress,
-        });
-    }
-    public removeFromTokenStateByAddress(tokenAddress: string) {
-        this._dispatch({
-            data: tokenAddress,
-            type: ActionTypes.RemoveFromTokenStateByAddress,
-        });
-    }
-    public replaceTokenAllowanceByAddress(address: string, allowance: BigNumber) {
-        this._dispatch({
-            data: {
-                address,
-                allowance,
-            },
-            type: ActionTypes.ReplaceTokenAllowanceByAddress,
-        });
-    }
-    public replaceTokenBalanceByAddress(address: string, balance: BigNumber) {
-        this._dispatch({
-            data: {
-                address,
-                balance,
-            },
-            type: ActionTypes.ReplaceTokenBalanceByAddress,
-        });
-    }
-    public updateTokenBalanceByAddress(address: string, balanceDelta: BigNumber) {
-        this._dispatch({
-            data: {
-                address,
-                balanceDelta,
-            },
-            type: ActionTypes.UpdateTokenBalanceByAddress,
+            type: ActionTypes.ForceTokenStateRefetch,
         });
     }
     public updateSignatureData(signatureData: SignatureData) {
diff --git a/packages/website/ts/redux/reducer.ts b/packages/website/ts/redux/reducer.ts
index 06ac8b670..cee475fa9 100644
--- a/packages/website/ts/redux/reducer.ts
+++ b/packages/website/ts/redux/reducer.ts
@@ -1,6 +1,7 @@
 import { ZeroEx } from '0x.js';
 import { BigNumber } from '@0xproject/utils';
 import * as _ from 'lodash';
+import * as moment from 'moment';
 import {
     Action,
     ActionTypes,
@@ -37,7 +38,7 @@ export interface State {
     shouldBlockchainErrDialogBeOpen: boolean;
     sideToAssetToken: SideToAssetToken;
     tokenByAddress: TokenByAddress;
-    tokenStateByAddress: TokenStateByAddress;
+    lastForceTokenStateRefetch: number;
     userAddress: string;
     userEtherBalance: BigNumber;
     // Note: cache of supplied orderJSON in fill order step. Do not use for anything else.
@@ -76,7 +77,7 @@ const INITIAL_STATE: State = {
         [Side.Receive]: {},
     },
     tokenByAddress: {},
-    tokenStateByAddress: {},
+    lastForceTokenStateRefetch: moment().unix(),
     userAddress: '',
     userEtherBalance: new BigNumber(0),
     userSuppliedOrderCache: undefined,
@@ -180,74 +181,11 @@ export function reducer(state: State = INITIAL_STATE, action: Action) {
             };
         }
 
-        case ActionTypes.UpdateTokenStateByAddress: {
-            const tokenStateByAddress = state.tokenStateByAddress;
-            const updatedTokenStateByAddress = action.data;
-            _.each(updatedTokenStateByAddress, (tokenState: TokenState, address: string) => {
-                const updatedTokenState = {
-                    ...tokenStateByAddress[address],
-                    ...tokenState,
-                };
-                tokenStateByAddress[address] = updatedTokenState;
-            });
-            return {
-                ...state,
-                tokenStateByAddress,
-            };
-        }
-
-        case ActionTypes.RemoveFromTokenStateByAddress: {
-            const tokenStateByAddress = state.tokenStateByAddress;
-            const tokenAddress = action.data;
-            delete tokenStateByAddress[tokenAddress];
-            return {
-                ...state,
-                tokenStateByAddress,
-            };
-        }
-
-        case ActionTypes.ReplaceTokenAllowanceByAddress: {
-            const tokenStateByAddress = state.tokenStateByAddress;
-            const allowance = action.data.allowance;
-            const tokenAddress = action.data.address;
-            tokenStateByAddress[tokenAddress] = {
-                ...tokenStateByAddress[tokenAddress],
-                allowance,
-            };
+        case ActionTypes.ForceTokenStateRefetch:
             return {
                 ...state,
-                tokenStateByAddress,
+                lastForceTokenStateRefetch: moment().unix(),
             };
-        }
-
-        case ActionTypes.ReplaceTokenBalanceByAddress: {
-            const tokenStateByAddress = state.tokenStateByAddress;
-            const balance = action.data.balance;
-            const tokenAddress = action.data.address;
-            tokenStateByAddress[tokenAddress] = {
-                ...tokenStateByAddress[tokenAddress],
-                balance,
-            };
-            return {
-                ...state,
-                tokenStateByAddress,
-            };
-        }
-
-        case ActionTypes.UpdateTokenBalanceByAddress: {
-            const tokenStateByAddress = state.tokenStateByAddress;
-            const balanceDelta = action.data.balanceDelta;
-            const tokenAddress = action.data.address;
-            const currBalance = tokenStateByAddress[tokenAddress].balance;
-            tokenStateByAddress[tokenAddress] = {
-                ...tokenStateByAddress[tokenAddress],
-                balance: currBalance.plus(balanceDelta),
-            };
-            return {
-                ...state,
-                tokenStateByAddress,
-            };
-        }
 
         case ActionTypes.UpdateOrderSignatureData: {
             return {
diff --git a/packages/website/ts/types.ts b/packages/website/ts/types.ts
index aec8f7e1e..134d4d7bf 100644
--- a/packages/website/ts/types.ts
+++ b/packages/website/ts/types.ts
@@ -125,11 +125,7 @@ export enum ActionTypes {
     UpdateOrderSignatureData = 'UPDATE_ORDER_SIGNATURE_DATA',
     UpdateTokenByAddress = 'UPDATE_TOKEN_BY_ADDRESS',
     RemoveTokenFromTokenByAddress = 'REMOVE_TOKEN_FROM_TOKEN_BY_ADDRESS',
-    UpdateTokenStateByAddress = 'UPDATE_TOKEN_STATE_BY_ADDRESS',
-    RemoveFromTokenStateByAddress = 'REMOVE_FROM_TOKEN_STATE_BY_ADDRESS',
-    ReplaceTokenAllowanceByAddress = 'REPLACE_TOKEN_ALLOWANCE_BY_ADDRESS',
-    ReplaceTokenBalanceByAddress = 'REPLACE_TOKEN_BALANCE_BY_ADDRESS',
-    UpdateTokenBalanceByAddress = 'UPDATE_TOKEN_BALANCE_BY_ADDRESS',
+    ForceTokenStateRefetch = 'FORCE_TOKEN_STATE_REFETCH',
     UpdateOrderExpiry = 'UPDATE_ORDER_EXPIRY',
     SwapAssetTokens = 'SWAP_ASSET_TOKENS',
     UpdateUserAddress = 'UPDATE_USER_ADDRESS',