feat: implement basic erc20 token selector

packages/instant/src/components/erc20_token_selector.tsx

@@ -0,0 +1,34 @@
+import * as _ from 'lodash';
+import * as React from 'react';
+
+import { ERC20Asset } from '../types';
+
+import { Button, Container } from './ui';
+
+export interface ERC20TokenSelectorProps {
+    tokens: ERC20Asset[];
+    onTokenSelect: (token: ERC20Asset) => void;
+}
+
+export const ERC20TokenSelector: React.StatelessComponent<ERC20TokenSelectorProps> = ({ tokens, onTokenSelect }) => (
+    <Container>{_.map(tokens, token => <TokenSelectorRow token={token} onClick={onTokenSelect} />)}</Container>
+);
+
+interface TokenSelectorRowProps {
+    token: ERC20Asset;
+    onClick: (token: ERC20Asset) => void;
+}
+
+class TokenSelectorRow extends React.Component<TokenSelectorRowProps> {
+    public render(): React.ReactNode {
+        const { token } = this.props;
+        return (
+            <Container>
+                <Button onClick={this._handleClick}>Select {token.metaData.symbol}</Button>
+            </Container>
+        );
+    }
+    private readonly _handleClick = (): void => {
+        this.props.onClick(this.props.token);
+    };
+}

packages/instant/src/components/zero_ex_instant_container.tsx

@@ -1,5 +1,6 @@
 import * as React from 'react';
 
+import { AvailableERC20TokenSelector } from '../containers/available_erc20_token_selector';
 import { LatestBuyQuoteOrderDetails } from '../containers/latest_buy_quote_order_details';
 import { LatestError } from '../containers/latest_error';
 import { SelectedAssetBuyOrderStateButtons } from '../containers/selected_asset_buy_order_state_buttons';
@@ -45,7 +46,7 @@ export class ZeroExInstantContainer extends React.Component<ZeroExInstantContain
                         animationState={this.state.tokenSelectionPanelAnimationState}
                         onClose={this._handlePanelClose}
                     >
-                        Select Your Token
+                        <AvailableERC20TokenSelector />
                     </SlidingPanel>
                 </Container>
             </Container>

packages/instant/src/containers/available_erc20_token_selector.ts

@@ -0,0 +1,36 @@
+import * as React from 'react';
+import { connect } from 'react-redux';
+import { Dispatch } from 'redux';
+
+import { State } from '../redux/reducer';
+import { ERC20Asset } from '../types';
+import { assetUtils } from '../util/asset';
+
+import { ERC20TokenSelector } from '../components/erc20_token_selector';
+import { Action, actions } from '../redux/actions';
+
+export interface AvailableERC20TokenSelectorProps {}
+
+interface ConnectedState {
+    tokens: ERC20Asset[];
+}
+
+interface ConnectedDispatch {
+    onTokenSelect: (token: ERC20Asset) => void;
+}
+
+const mapStateToProps = (state: State, _ownProps: AvailableERC20TokenSelectorProps): ConnectedState => ({
+    tokens: assetUtils.getERC20AssetsFromAssets(state.availableAssets),
+});
+
+const mapDispatchToProps = (
+    dispatch: Dispatch<Action>,
+    ownProps: AvailableERC20TokenSelectorProps,
+): ConnectedDispatch => ({
+    onTokenSelect: (token: ERC20Asset) => dispatch(actions.updateSelectedAsset(token)),
+});
+
+export const AvailableERC20TokenSelector: React.ComponentClass<AvailableERC20TokenSelectorProps> = connect(
+    mapStateToProps,
+    mapDispatchToProps,
+)(ERC20TokenSelector);

packages/instant/src/redux/actions.ts

@@ -43,7 +43,7 @@ export const actions = {
         createAction(ActionTypes.UPDATE_SELECTED_ASSET_AMOUNT, amount),
     updateBuyOrderState: (orderState: OrderState) => createAction(ActionTypes.UPDATE_BUY_ORDER_STATE, orderState),
     updateLatestBuyQuote: (buyQuote?: BuyQuote) => createAction(ActionTypes.UPDATE_LATEST_BUY_QUOTE, buyQuote),
-    updateSelectedAsset: (assetData?: string) => createAction(ActionTypes.UPDATE_SELECTED_ASSET, assetData),
+    updateSelectedAsset: (asset: Asset) => createAction(ActionTypes.UPDATE_SELECTED_ASSET, asset),
     setAvailableAssets: (availableAssets: Asset[]) => createAction(ActionTypes.SET_AVAILABLE_ASSETS, availableAssets),
     setQuoteRequestStatePending: () => createAction(ActionTypes.SET_QUOTE_REQUEST_STATE_PENDING),
     setQuoteRequestStateFailure: () => createAction(ActionTypes.SET_QUOTE_REQUEST_STATE_FAILURE),

packages/instant/src/redux/reducer.ts

@@ -14,7 +14,6 @@ import {
     OrderProcessState,
     OrderState,
 } from '../types';
-import { assetUtils } from '../util/asset';
 import { BigNumberInput } from '../util/big_number_input';
 
 import { Action, ActionTypes } from './actions';
@@ -108,18 +107,9 @@ export const reducer = (state: State = INITIAL_STATE, action: Action): State =>
                 latestErrorDisplayStatus: DisplayStatus.Hidden,
             };
         case ActionTypes.UPDATE_SELECTED_ASSET:
-            const newSelectedAssetData = action.data;
-            let newSelectedAsset: Asset | undefined;
-            if (!_.isUndefined(newSelectedAssetData)) {
-                newSelectedAsset = assetUtils.createAssetFromAssetDataOrThrow(
-                    newSelectedAssetData,
-                    state.assetMetaDataMap,
-                    state.network,
-                );
-            }
             return {
                 ...state,
-                selectedAsset: newSelectedAsset,
+                selectedAsset: action.data,
             };
         case ActionTypes.RESET_AMOUNT:
             return {

packages/instant/src/util/asset.ts

@@ -98,4 +98,11 @@ export const assetUtils = {
         }
         return assetDataGroupIfExists[Network.Mainnet];
     },
+    getERC20AssetsFromAssets: (assets: Asset[]): ERC20Asset[] => {
+        const erc20sOrUndefined = _.map(
+            assets,
+            asset => (asset.metaData.assetProxyId === AssetProxyId.ERC20 ? (asset as ERC20Asset) : undefined),
+        );
+        return _.compact(erc20sOrUndefined);
+    },
 };