Merge branch 'development' of github.com:0xProject/0x-monorepo into development

* 'development' of github.com:0xProject/0x-monorepo:
  Add additional CHANGELOG to types package
  Add CHANGELOG entry
  Fix prettier
  Fix `SimpleContractArtifact` type
  Update abi-gen-wrappers
  Add @0x/types to dependencies of `@0x/abi-gen-wrappers`
  Allow a `SimpleContractArtifact` to be passed into `deployFrom0xArtifactAsync`
  Update issue template
  fix(instant): Use new valid svg image for instant
  isDisabled -> isInputDisabled
  Allow user to select other token on success
  fix: do not use document on import
  fix(instant): Don't allow changing of assets when order processing
  fix: npmignore file ignoring index.d.ts
  fix: specify new location of index.js in package.json
  feat: fix instant build and add to project references
  chore: make instant public

1 files changed, 13 insertions, 5 deletions

diff --git a/packages/instant/src/containers/selected_erc20_asset_amount_input.ts b/packages/instant/src/containers/selected_erc20_asset_amount_input.ts
index 2c2661e1a..a39bc46a2 100644
--- a/packages/instant/src/containers/selected_erc20_asset_amount_input.ts
+++ b/packages/instant/src/containers/selected_erc20_asset_amount_input.ts
@@ -23,9 +23,10 @@ interface ConnectedState {
     assetBuyer: AssetBuyer;
     value?: BigNumber;
     asset?: ERC20Asset;
-    isDisabled: boolean;
+    isInputDisabled: boolean;
     numberOfAssetsAvailable?: number;
     affiliateInfo?: AffiliateInfo;
+    canSelectOtherAsset: boolean;
 }
 
 interface ConnectedDispatch {
@@ -43,21 +44,27 @@ type FinalProps = ConnectedProps & SelectedERC20AssetAmountInputProps;
 
 const mapStateToProps = (state: State, _ownProps: SelectedERC20AssetAmountInputProps): ConnectedState => {
     const processState = state.buyOrderState.processState;
-    const isEnabled = processState === OrderProcessState.None || processState === OrderProcessState.Failure;
-    const isDisabled = !isEnabled;
+    const isInputEnabled = processState === OrderProcessState.None || processState === OrderProcessState.Failure;
+    const isInputDisabled = !isInputEnabled;
     const selectedAsset =
         !_.isUndefined(state.selectedAsset) && state.selectedAsset.metaData.assetProxyId === AssetProxyId.ERC20
             ? (state.selectedAsset as ERC20Asset)
             : undefined;
     const numberOfAssetsAvailable = _.isUndefined(state.availableAssets) ? undefined : state.availableAssets.length;
+    const canSelectOtherAsset =
+        numberOfAssetsAvailable && numberOfAssetsAvailable > 1
+            ? isInputEnabled || processState === OrderProcessState.Success
+            : false;
+
     const assetBuyer = state.providerState.assetBuyer;
     return {
         assetBuyer,
         value: state.selectedAssetUnitAmount,
         asset: selectedAsset,
-        isDisabled,
+        isInputDisabled,
         numberOfAssetsAvailable,
         affiliateInfo: state.affiliateInfo,
+        canSelectOtherAsset,
     };
 };
 
@@ -102,8 +109,9 @@ const mergeProps = (
         onChange: (value, asset) => {
             connectedDispatch.updateBuyQuote(connectedState.assetBuyer, value, asset, connectedState.affiliateInfo);
         },
-        isDisabled: connectedState.isDisabled,
+        isInputDisabled: connectedState.isInputDisabled,
         numberOfAssetsAvailable: connectedState.numberOfAssetsAvailable,
+        canSelectOtherAsset: connectedState.canSelectOtherAsset,
     };
 };