Disabled update cart button until product options not selected in min… (

#1125)

* Disabled update cart button until product options not selected in minicart

* Remove unwanted condition to disable button

packages/venia-concept/src/components/MiniCart/cartOptions.js

@@ -85,8 +85,30 @@ class CartOptions extends Component {
         updateCart(payload, cartItem.item_id);
     };
 
+    get isMissingOptions() {
+        const { configItem, cartItem } = this.props;
+
+        // Non-configurable products can't be missing options
+        if (cartItem.product_type !== 'configurable') {
+            return false;
+        }
+
+        // Configurable products are missing options if we have fewer
+        // option selections than the product has options.
+        const { configurable_options } = configItem;
+        const numProductOptions = configurable_options.length;
+        const numProductSelections = this.state.optionSelections.size;
+
+        return numProductSelections < numProductOptions;
+    }
+
     render() {
-        const { fallback, handleSelectionChange, props } = this;
+        const {
+            fallback,
+            handleSelectionChange,
+            isMissingOptions,
+            props
+        } = this;
         const { classes, cartItem, configItem, isUpdatingItem } = props;
         const { name, price } = cartItem;
 
@@ -129,7 +151,11 @@ class CartOptions extends Component {
                     <Button onClick={this.props.closeOptionsDrawer}>
                         <span>Cancel</span>
                     </Button>
-                    <Button priority="high" onClick={this.handleClick}>
+                    <Button
+                        priority="high"
+                        onClick={this.handleClick}
+                        disabled={isMissingOptions}
+                    >
                         <span>Update Cart</span>
                     </Button>
                 </div>