From ee7d6fb3afad313fa699018c727c24db4f2024bd Mon Sep 17 00:00:00 2001
From: Steve Klebanoff <steve.klebanoff@gmail.com>
Date: Tue, 11 Dec 2018 14:55:32 -0800
Subject: Show as 0 when selected

---
 packages/instant/src/components/order_details.tsx | 18 +++++++++++-------
 packages/instant/src/constants.ts                 |  1 +
 packages/instant/src/util/asset.ts                |  3 ++-
 3 files changed, 14 insertions(+), 8 deletions(-)

(limited to 'packages/instant/src')

diff --git a/packages/instant/src/components/order_details.tsx b/packages/instant/src/components/order_details.tsx
index 2fcde5aa4..67090898e 100644
--- a/packages/instant/src/components/order_details.tsx
+++ b/packages/instant/src/components/order_details.tsx
@@ -3,10 +3,10 @@ import { BigNumber } from '@0x/utils';
 import * as _ from 'lodash';
 import * as React from 'react';
 
+import { DEFAULT_UNKOWN_ASSET_NAME } from '../constants';
 import { ColorOption } from '../style/theme';
 import { BaseCurrency } from '../types';
 import { buyQuoteUtil } from '../util/buy_quote';
-import { format } from '../util/format';
 
 import { AmountPlaceholder } from './amount_placeholder';
 
@@ -171,7 +171,7 @@ export interface TokenAmountRowProps {
     numTokens?: BigNumber;
 }
 export class TokenAmountRow extends React.Component<TokenAmountRowProps> {
-    public static DEFAULT_TEXT: string = 'Token Price';
+    public static DEFAULT_TEXT: string = 'Token Amount';
     public render(): React.ReactNode {
         return (
             <OrderDetailsRow
@@ -182,11 +182,15 @@ export class TokenAmountRow extends React.Component<TokenAmountRowProps> {
         );
     }
     private _labelText(): string {
-        if (this.props.isLoading) {
-            return TokenAmountRow.DEFAULT_TEXT;
-        }
-        const { numTokens, displayPricePerToken, assetName } = this.props;
-        if (numTokens) {
+        const { displayPricePerToken, assetName } = this.props;
+
+        // Display as 0 if we have a selected asset
+        const numTokens =
+            assetName && assetName !== DEFAULT_UNKOWN_ASSET_NAME && _.isUndefined(this.props.numTokens)
+                ? 0
+                : this.props.numTokens;
+
+        if (!_.isUndefined(numTokens)) {
             let numTokensWithSymbol = numTokens.toString();
 
             if (assetName) {
diff --git a/packages/instant/src/constants.ts b/packages/instant/src/constants.ts
index f83eb4ac7..975dfcbea 100644
--- a/packages/instant/src/constants.ts
+++ b/packages/instant/src/constants.ts
@@ -17,6 +17,7 @@ export const ONE_MINUTE_MS = ONE_SECOND_MS * 60;
 export const GIT_SHA = process.env.GIT_SHA;
 export const NODE_ENV = process.env.NODE_ENV;
 export const NPM_PACKAGE_VERSION = process.env.NPM_PACKAGE_VERSION;
+export const DEFAULT_UNKOWN_ASSET_NAME = '???';
 export const ACCOUNT_UPDATE_INTERVAL_TIME_MS = ONE_SECOND_MS * 5;
 export const BUY_QUOTE_UPDATE_INTERVAL_TIME_MS = ONE_SECOND_MS * 15;
 export const DEFAULT_GAS_PRICE = GWEI_IN_WEI.mul(6);
diff --git a/packages/instant/src/util/asset.ts b/packages/instant/src/util/asset.ts
index 13f84ef74..faaeb7c22 100644
--- a/packages/instant/src/util/asset.ts
+++ b/packages/instant/src/util/asset.ts
@@ -2,6 +2,7 @@ import { AssetBuyerError } from '@0x/asset-buyer';
 import { AssetProxyId, ObjectMap } from '@0x/types';
 import * as _ from 'lodash';
 
+import { DEFAULT_UNKOWN_ASSET_NAME } from '../constants';
 import { assetDataNetworkMapping } from '../data/asset_data_network_mapping';
 import { Asset, AssetMetaData, ERC20Asset, Network, ZeroExInstantError } from '../types';
 
@@ -71,7 +72,7 @@ export const assetUtils = {
         }
         return metaData;
     },
-    bestNameForAsset: (asset?: Asset, defaultName: string = '???'): string => {
+    bestNameForAsset: (asset?: Asset, defaultName: string = DEFAULT_UNKOWN_ASSET_NAME): string => {
         if (_.isUndefined(asset)) {
             return defaultName;
         }
-- 
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