fix: product page

packages/flutter_product_page/lib/src/configuration/product_page_configuration.dart

@@ -1,4 +1,5 @@
 import "package:flutter/material.dart";
+import "package:flutter_product_page/src/services/shopping_cart_notifier.dart";
 import "package:flutter_product_page/src/ui/widgets/product_item_popup.dart";
 import "package:flutter_shopping/flutter_shopping.dart";
 
@@ -10,7 +11,7 @@ class ProductPageConfiguration {
     required this.getProducts,
     required this.onAddToCart,
     required this.onNavigateToShoppingCart,
-    this.navigateToShoppingCartBuilder,
+    this.navigateToShoppingCartBuilder = _defaultNavigateToShoppingCartBuilder,
     this.initialShopId,
     this.productBuilder,
     this.onShopSelectionChange,
@@ -20,7 +21,7 @@ class ProductPageConfiguration {
     this.categoryStylingConfiguration =
         const ProductPageCategoryStylingConfiguration(),
     this.pagePadding = const EdgeInsets.all(4),
-    this.appBar,
+    this.appBar = _defaultAppBar,
     this.bottomNavigationBar,
     Function(
       BuildContext context,
@@ -50,8 +51,7 @@ class ProductPageConfiguration {
             );
 
     _onProductDetail = onProductDetail;
-    _onProductDetail ??=
+    _onProductDetail ??= (BuildContext context, Product product) async {
-        (BuildContext context, Product product) async {
       var theme = Theme.of(context);
 
       await showModalBottomSheet(
@@ -88,8 +88,8 @@ class ProductPageConfiguration {
     };
 
     _getDiscountDescription = getDiscountDescription;
-    _getDiscountDescription ??=
+    _getDiscountDescription ??= (Product product) =>
-        (Product product) => "${product.name} is on sale!";
+        "${product.name}, now for ${product.discountPrice} each";
   }
 
   /// The shop that is initially selected.
@@ -109,8 +109,7 @@ class ProductPageConfiguration {
   /// for each product in their seperated category. This builder should only
   /// build the widget for one specific product. This builder has a default
   /// in-case the developer does not override it.
-  Widget Function(BuildContext context, Product product)?
+  Widget Function(BuildContext context, Product product)? productBuilder;
-      productBuilder;
 
   late Widget Function(BuildContext context, Product product)?
       _productPopupBuilder;
@@ -122,14 +121,13 @@ class ProductPageConfiguration {
   Widget Function(BuildContext context, Product product)
       get productPopupBuilder => _productPopupBuilder!;
 
-  late Function(BuildContext context, Product product)?
+  late Function(BuildContext context, Product product)? _onProductDetail;
-      _onProductDetail;
 
   /// This function handles the creation of the product detail popup. This
   /// function has a default in-case the developer does not override it.
   /// The default intraction is a popup, but this can be overriden.
-  Function(BuildContext context, Product product)
+  Function(BuildContext context, Product product) get onProductDetail =>
-      get onProductDetail => _onProductDetail!;
+      _onProductDetail!;
 
   late Widget Function(BuildContext context)? _noContentBuilder;
 
@@ -139,7 +137,11 @@ class ProductPageConfiguration {
 
   /// The builder for the shopping cart. This builder should return a widget
   /// that navigates to the shopping cart overview page.
-  Widget Function(BuildContext context)? navigateToShoppingCartBuilder;
+  Widget Function(
+    BuildContext context,
+    ProductPageConfiguration configuration,
+    ShoppingCartNotifier notifier,
+  ) navigateToShoppingCartBuilder;
 
   late Widget Function(
     BuildContext context,
@@ -188,5 +190,54 @@ class ProductPageConfiguration {
   final Widget? bottomNavigationBar;
 
   /// Optional app bar that you can pass to the order detail screen.
-  final PreferredSizeWidget? appBar;
+  final AppBar Function(BuildContext context)? appBar;
+}
+
+AppBar _defaultAppBar(
+  BuildContext context,
+) {
+  var theme = Theme.of(context);
+
+  return AppBar(
+    leading: IconButton(onPressed: () {}, icon: const Icon(Icons.person)),
+    actions: [
+      IconButton(onPressed: () {}, icon: const Icon(Icons.filter_alt)),
+    ],
+    title: Text(
+      "Product page",
+      style: theme.textTheme.headlineLarge,
+    ),
+  );
+}
+
+Widget _defaultNavigateToShoppingCartBuilder(
+  BuildContext context,
+  ProductPageConfiguration configuration,
+  ShoppingCartNotifier notifier,
+) {
+  var theme = Theme.of(context);
+
+  return ListenableBuilder(
+    listenable: notifier,
+    builder: (context, widget) => FilledButton(
+      onPressed: configuration.getProductsInShoppingCart?.call() != 0
+          ? configuration.onNavigateToShoppingCart
+          : null,
+      style: theme.filledButtonTheme.style?.copyWith(
+        backgroundColor: WidgetStateProperty.all(
+          theme.colorScheme.primary,
+        ),
+      ),
+      child: Padding(
+        padding: const EdgeInsets.symmetric(
+          horizontal: 16.0,
+          vertical: 8.0,
+        ),
+        child: Text(
+          configuration.localizations.navigateToShoppingCart,
+          style: theme.textTheme.displayLarge,
+        ),
+      ),
+    ),
+  );
 }

packages/flutter_product_page/lib/src/configuration/product_page_localization.dart

@@ -3,7 +3,7 @@ class ProductPageLocalization {
   /// Default constructor
   const ProductPageLocalization({
     this.navigateToShoppingCart = "View shopping cart",
-    this.discountTitle = "Discount",
+    this.discountTitle = "Weekly offer",
     this.failedToLoadImageExplenation = "Failed to load image",
     this.close = "Close",
   });

packages/flutter_product_page/lib/src/services/category_service.dart

@@ -19,12 +19,13 @@ Product onAddToCartWrapper(
 
 /// Generates a [CategoryList] from a list of [Product]s and a
 /// [ProductPageConfiguration].
-CategoryList getCategoryList(
+Widget getCategoryList(
   BuildContext context,
   ProductPageConfiguration configuration,
   ShoppingCartNotifier shoppingCartNotifier,
   List<Product> products,
 ) {
+  var theme = Theme.of(context);
   var categorizedProducts = <String, List<Product>>{};
   for (var product in products) {
     if (!categorizedProducts.containsKey(product.category)) {
@@ -43,8 +44,7 @@ CategoryList getCategoryList(
               : ProductItem(
                   product: product,
                   onProductDetail: configuration.onProductDetail,
-                  onAddToCart: (Product product) =>
+                  onAddToCart: (Product product) => onAddToCartWrapper(
-                      onAddToCartWrapper(
                     configuration,
                     shoppingCartNotifier,
                     product,
@@ -59,15 +59,19 @@ CategoryList getCategoryList(
     );
     categories.add(category);
   });
-
+  return Column(
-  return CategoryList(
+    crossAxisAlignment: CrossAxisAlignment.start,
-    title: configuration.categoryStylingConfiguration.title,
+    children: [
-    titleStyle: configuration.categoryStylingConfiguration.titleStyle,
+      for (var category in categories) ...[
-    customTitle: configuration.categoryStylingConfiguration.customTitle,
+        Text(
-    headerCentered: configuration.categoryStylingConfiguration.headerCentered,
+          category.name!,
-    headerStyling: configuration.categoryStylingConfiguration.headerStyling,
+          style: theme.textTheme.titleMedium,
-    isCategoryCollapsible:
+        ),
-        configuration.categoryStylingConfiguration.isCategoryCollapsible,
+        Column(
-    content: categories,
+          children: category.content,
+        ),
+        const SizedBox(height: 16),
+      ],
+    ],
   );
 }

packages/flutter_product_page/lib/src/ui/components/product_item.dart

@@ -18,8 +18,7 @@ class ProductItem extends StatelessWidget {
   final Product product;
 
   /// Function to call when the product detail is requested.
-  final Function(BuildContext context, Product selectedProduct)
+  final Function(BuildContext context, Product selectedProduct) onProductDetail;
-      onProductDetail;
 
   /// Function to call when the product is added to the cart.
   final Function(Product selectedProduct) onAddToCart;
@@ -76,7 +75,10 @@ class ProductItem extends StatelessWidget {
       padding: const EdgeInsets.only(left: 4),
       child: IconButton(
         onPressed: () => onProductDetail(context, product),
-        icon: const Icon(Icons.info_outline),
+        icon: Icon(
+          Icons.info_outline,
+          color: theme.colorScheme.primary,
+        ),
       ),
     );
 
@@ -84,10 +86,7 @@ class ProductItem extends StatelessWidget {
       crossAxisAlignment: CrossAxisAlignment.end,
       children: [
         _PriceLabel(
-          price: product.price,
+          product: product,
-          discountPrice: (product.hasDiscount && product.discountPrice != null)
-              ? product.discountPrice
-              : null,
         ),
         _AddToCardButton(
           product: product,
@@ -113,39 +112,33 @@ class ProductItem extends StatelessWidget {
 
 class _PriceLabel extends StatelessWidget {
   const _PriceLabel({
-    required this.price,
+    required this.product,
-    required this.discountPrice,
   });
 
-  final double price;
+  final Product product;
-  final double? discountPrice;
 
   @override
   Widget build(BuildContext context) {
     var theme = Theme.of(context);
 
-    if (discountPrice == null)
-      return Text(
-        price.toStringAsFixed(2),
-        style: theme.textTheme.bodyMedium,
-      );
-    else
     return Row(
       children: [
+        if (product.hasDiscount) ...[
           Text(
-            price.toStringAsFixed(2),
+            product.price.toStringAsFixed(2),
             style: theme.textTheme.bodySmall?.copyWith(
-              fontSize: 10,
-              color: theme.colorScheme.primary,
               decoration: TextDecoration.lineThrough,
             ),
+            textAlign: TextAlign.center,
           ),
-          Padding(
+          const SizedBox(width: 4),
-            padding: const EdgeInsets.only(left: 4.0),
+        ],
-            child: Text(
+        Text(
-              discountPrice!.toStringAsFixed(2),
+          product.hasDiscount
-              style: theme.textTheme.bodyMedium,
+              ? product.discountPrice!.toStringAsFixed(2)
-            ),
+              : product.price.toStringAsFixed(2),
+          style: theme.textTheme.bodySmall,
+          textAlign: TextAlign.center,
         ),
       ],
     );
@@ -166,28 +159,22 @@ class _AddToCardButton extends StatelessWidget {
   @override
   Widget build(BuildContext context) {
     var theme = Theme.of(context);
-    return SizedBox(
+    return Container(
+      decoration: BoxDecoration(
+        color: theme.colorScheme.primary,
+        borderRadius: BorderRadius.circular(4),
+      ),
       width: boxSize,
       height: boxSize,
       child: Center(
         child: IconButton(
           padding: EdgeInsets.zero,
-          icon: Icon(
+          icon: const Icon(
             Icons.add,
-            color: theme.primaryColor,
+            color: Colors.white,
             size: 20,
           ),
           onPressed: () => onAddToCart(product),
-          style: ButtonStyle(
-            backgroundColor: WidgetStateProperty.all(
-              theme.colorScheme.secondary,
-            ),
-            shape: WidgetStateProperty.all(
-              RoundedRectangleBorder(
-                borderRadius: BorderRadius.circular(4),
-              ),
-            ),
-          ),
         ),
       ),
     );

packages/flutter_product_page/lib/src/ui/components/weekly_discount.dart

@@ -18,7 +18,7 @@ class WeeklyDiscount extends StatelessWidget {
   final Product product;
 
   /// The top padding of the widget.
-  static const double topPadding = 32.0;
+  static const double topPadding = 20;
 
   @override
   Widget build(BuildContext context) {
@@ -28,9 +28,7 @@ class WeeklyDiscount extends StatelessWidget {
       padding: const EdgeInsets.all(20.0),
       child: Text(
         configuration.getDiscountDescription!(product),
-        style: theme.textTheme.titleMedium?.copyWith(
+        style: theme.textTheme.bodyMedium,
-          color: theme.colorScheme.primary,
-        ),
         textAlign: TextAlign.left,
       ),
     );
@@ -73,9 +71,9 @@ class WeeklyDiscount extends StatelessWidget {
     );
 
     var topText = DecoratedBox(
-      decoration: BoxDecoration(
+      decoration: const BoxDecoration(
-        color: theme.primaryColor,
+        color: Colors.black,
-        borderRadius: const BorderRadius.only(
+        borderRadius: BorderRadius.only(
           topLeft: Radius.circular(4),
           topRight: Radius.circular(4),
         ),
@@ -88,10 +86,8 @@ class WeeklyDiscount extends StatelessWidget {
             horizontal: 16,
           ),
           child: Text(
-            configuration.localizations.discountTitle.toUpperCase(),
+            configuration.localizations.discountTitle,
-            style: theme.textTheme.titleMedium?.copyWith(
+            style: theme.textTheme.headlineSmall,
-              color: theme.colorScheme.onPrimary,
-            ),
             textAlign: TextAlign.left,
           ),
         ),
@@ -100,7 +96,6 @@ class WeeklyDiscount extends StatelessWidget {
 
     var boxDecoration = BoxDecoration(
       border: Border.all(
-        color: theme.primaryColor,
         width: 1.0,
       ),
       borderRadius: BorderRadius.circular(4.0),

packages/flutter_product_page/lib/src/ui/product_page.dart

@@ -121,6 +121,7 @@ class _ProductPage extends StatelessWidget {
   Widget build(BuildContext context) {
     var pageContent = SingleChildScrollView(
       child: Column(
+        crossAxisAlignment: CrossAxisAlignment.start,
         children: [
           ShopSelector(
             configuration: configuration,
@@ -142,11 +143,10 @@ class _ProductPage extends StatelessWidget {
         pageContent,
         Align(
           alignment: Alignment.bottomCenter,
-          child: configuration.navigateToShoppingCartBuilder != null
+          child: configuration.navigateToShoppingCartBuilder(
-              ? configuration.navigateToShoppingCartBuilder!(context)
+            context,
-              : _NavigateToShoppingCartButton(
+            configuration,
-                  configuration: configuration,
+            shoppingCartNotifier,
-                  shoppingCartNotifier: shoppingCartNotifier,
           ),
         ),
       ],
@@ -154,55 +154,6 @@ class _ProductPage extends StatelessWidget {
   }
 }
 
-class _NavigateToShoppingCartButton extends StatelessWidget {
-  const _NavigateToShoppingCartButton({
-    required this.configuration,
-    required this.shoppingCartNotifier,
-  });
-
-  final ProductPageConfiguration configuration;
-  final ShoppingCartNotifier shoppingCartNotifier;
-
-  @override
-  Widget build(BuildContext context) {
-    var theme = Theme.of(context);
-
-    String getProductsInShoppingCartLabel() {
-      var fun = configuration.getProductsInShoppingCart;
-
-      if (fun == null) {
-        return "";
-      }
-
-      return "(${fun()})";
-    }
-
-    return FilledButton(
-      onPressed: configuration.onNavigateToShoppingCart,
-      style: theme.filledButtonTheme.style?.copyWith(
-        backgroundColor: WidgetStateProperty.all(
-          theme.colorScheme.primary,
-        ),
-      ),
-      child: Padding(
-        padding: const EdgeInsets.symmetric(
-          horizontal: 16.0,
-          vertical: 8.0,
-        ),
-        child: ListenableBuilder(
-          listenable: shoppingCartNotifier,
-          builder: (BuildContext context, Widget? _) => Text(
-            """${configuration.localizations.navigateToShoppingCart.toUpperCase()} ${getProductsInShoppingCartLabel()}""",
-            style: theme.textTheme.titleMedium?.copyWith(
-              color: theme.colorScheme.onPrimary,
-            ),
-          ),
-        ),
-      ),
-    );
-  }
-}
-
 class _ShopContents extends StatelessWidget {
   const _ShopContents({
     required this.configuration,
@@ -215,7 +166,9 @@ class _ShopContents extends StatelessWidget {
   final ShoppingCartNotifier shoppingCartNotifier;
 
   @override
-  Widget build(BuildContext context) => Padding(
+  Widget build(BuildContext context) {
+    var theme = Theme.of(context);
+    return Padding(
       padding: EdgeInsets.symmetric(
         horizontal: configuration.pagePadding.horizontal,
       ),
@@ -248,7 +201,7 @@ class _ShopContents extends StatelessWidget {
           }
 
           var productList = Padding(
-              padding: const EdgeInsets.fromLTRB(16, 24, 16, 8),
+            padding: const EdgeInsets.fromLTRB(16, 12, 16, 8),
             child: Column(
               children: [
                 // Products
@@ -267,6 +220,7 @@ class _ShopContents extends StatelessWidget {
           );
 
           return Column(
+            crossAxisAlignment: CrossAxisAlignment.start,
             children: [
               // Discounted product
               if (productPageContent.discountedProduct != null) ...[
@@ -278,6 +232,15 @@ class _ShopContents extends StatelessWidget {
                   ),
                 ),
               ],
+              Padding(
+                padding:
+                    const EdgeInsets.symmetric(horizontal: 16, vertical: 24),
+                child: Text(
+                  "What would you like to order?",
+                  style: theme.textTheme.titleLarge,
+                  textAlign: TextAlign.start,
+                ),
+              ),
 
               productList,
             ],
@@ -286,3 +249,4 @@ class _ShopContents extends StatelessWidget {
       ),
     );
   }
+}

packages/flutter_product_page/lib/src/ui/product_page_screen.dart

@@ -24,13 +24,13 @@ class ProductPageScreen extends StatelessWidget {
 
   @override
   Widget build(BuildContext context) => Scaffold(
+        appBar: configuration.appBar!.call(context),
         body: SafeArea(
           child: ProductPage(
             configuration: configuration,
             initialBuildShopId: initialBuildShopId,
           ),
         ),
-        appBar: configuration.appBar,
         bottomNavigationBar: configuration.bottomNavigationBar,
       );
 }

packages/flutter_product_page/lib/src/ui/widgets/horizontal_list_items.dart

@@ -9,7 +9,7 @@ class HorizontalListItems extends StatelessWidget {
     required this.selectedItem,
     required this.onTap,
     this.paddingBetweenButtons = 2.0,
-    this.paddingOnButtons = 4,
+    this.paddingOnButtons = 6,
     super.key,
   });
 
@@ -32,7 +32,11 @@ class HorizontalListItems extends StatelessWidget {
   Widget build(BuildContext context) {
     var theme = Theme.of(context);
 
-    return SingleChildScrollView(
+    return Padding(
+      padding: const EdgeInsets.only(
+        top: 4,
+      ),
+      child: SingleChildScrollView(
         scrollDirection: Axis.horizontal,
         child: Row(
           children: shops
@@ -45,7 +49,7 @@ class HorizontalListItems extends StatelessWidget {
                       decoration: BoxDecoration(
                         color: shop.id == selectedItem
                             ? theme.colorScheme.primary
-                          : theme.colorScheme.secondary,
+                            : Colors.white,
                         borderRadius: BorderRadius.circular(4),
                         border: Border.all(
                           color: theme.colorScheme.primary,
@@ -68,6 +72,7 @@ class HorizontalListItems extends StatelessWidget {
               )
               .toList(),
         ),
+      ),
     );
   }
 }

packages/flutter_product_page/lib/src/ui/widgets/product_item_popup.dart

@@ -20,50 +20,46 @@ class ProductItemPopup extends StatelessWidget {
   Widget build(BuildContext context) {
     var theme = Theme.of(context);
 
-    var productDescription = Padding(
+    return SingleChildScrollView(
-      padding: const EdgeInsets.fromLTRB(44, 32, 44, 20),
+      child: Padding(
-      child: Text(
+        padding: const EdgeInsets.all(32),
-        product.name,
+        child: SizedBox(
+          width: double.infinity,
+          child: Column(
+            children: [
+              Text(
+                product.description,
+                style: theme.textTheme.bodySmall,
                 textAlign: TextAlign.center,
               ),
-    );
+              Padding(
-
+                padding: const EdgeInsets.only(top: 20, left: 40, right: 40),
-    var closeButton = Padding(
-      padding: const EdgeInsets.fromLTRB(80, 0, 80, 32),
                 child: SizedBox(
-        width: 254,
+                  width: double.infinity,
-        child: ElevatedButton(
+                  child: FilledButton(
-          style: theme.elevatedButtonTheme.style?.copyWith(
-            shape: WidgetStateProperty.all(
-              RoundedRectangleBorder(
-                borderRadius: BorderRadius.circular(6),
-              ),
-            ),
-          ),
                     onPressed: () => Navigator.of(context).pop(),
+                    style: theme.filledButtonTheme.style?.copyWith(
+                      backgroundColor: WidgetStateProperty.all(
+                        theme.colorScheme.primary,
+                      ),
+                    ),
                     child: Padding(
-            padding: const EdgeInsets.all(14),
+                      padding: const EdgeInsets.symmetric(
+                        horizontal: 16.0,
+                        vertical: 8.0,
+                      ),
                       child: Text(
                         configuration.localizations.close,
-              style: theme.textTheme.titleMedium?.copyWith(
+                        style: theme.textTheme.displayLarge,
-                color: theme.colorScheme.onSurface,
                       ),
                     ),
                   ),
                 ),
               ),
-    );
-
-    return SingleChildScrollView(
-      child: Center(
-        child: Column(
-          mainAxisSize: MainAxisSize.min,
-          children: [
-            productDescription,
-            closeButton,
             ],
           ),
         ),
+      ),
     );
   }
 }

packages/flutter_product_page/lib/src/ui/widgets/spaced_wrap.dart

@@ -33,118 +33,44 @@ class SpacedWrap extends StatelessWidget {
   /// Callback when an item is tapped.
   final Function(ProductPageShop shop) onTap;
 
-  Row _buildRow(
+  @override
-    BuildContext context,
+  Widget build(BuildContext context) {
-    List<int> currentRow,
-    double availableRowLength,
-  ) {
     var theme = Theme.of(context);
-
+    return Wrap(
-    var row = <Widget>[];
+      alignment: WrapAlignment.center,
-    var extraButtonPadding = availableRowLength / currentRow.length / 2;
+      spacing: 4,
-
+      children: [
-    for (var i = 0, len = currentRow.length; i < len; i++) {
+        for (var shop in shops) ...[
-      var shop = shops[currentRow[i]];
-      row.add(
           Padding(
             padding: EdgeInsets.only(top: paddingBetweenButtons),
             child: InkWell(
               onTap: () => onTap(shop),
-            child: Container(
+              child: DecoratedBox(
                 decoration: BoxDecoration(
                   color: shop.id == selectedItem
-                    ? theme.colorScheme.primary
+                      ? Theme.of(context).colorScheme.primary
-                    : theme.colorScheme.secondary,
+                      : Colors.white,
                   borderRadius: BorderRadius.circular(4),
                   border: Border.all(
-                  color: theme.colorScheme.primary,
+                    color: Theme.of(context).colorScheme.primary,
                     width: 1,
                   ),
                 ),
-              padding: EdgeInsets.symmetric(
+                child: Padding(
-                horizontal: paddingOnButtons + extraButtonPadding,
+                  padding: const EdgeInsets.all(8.0),
-                vertical: paddingOnButtons,
-              ),
                   child: Text(
                     shop.name,
                     style: shop.id == selectedItem
-                    ? theme.textTheme.bodyMedium?.copyWith(
+                        ? theme.textTheme.titleMedium
-                        color: Colors.white,
+                            ?.copyWith(color: Colors.white)
-                        fontWeight: FontWeight.bold,
-                      )
                         : theme.textTheme.bodyMedium,
                   ),
                 ),
               ),
             ),
-      );
-      if (shops.last != shop) {
-        row.add(const Spacer());
-      }
-    }
-    return Row(
-      mainAxisAlignment: MainAxisAlignment.center,
-      children: row,
-    );
-  }
-
-  List<Row> _buildButtonRows(BuildContext context) {
-    var theme = Theme.of(context);
-    var rows = <Row>[];
-    var currentRow = <int>[];
-    var availableRowLength = width;
-
-    for (var i = 0; i < shops.length; i++) {
-      var shop = shops[i];
-
-      var textPainter = TextPainter(
-        text: TextSpan(
-          text: shop.name,
-          style: shop.id == selectedItem
-              ? theme.textTheme.bodyMedium?.copyWith(
-                  color: Colors.white,
-                  fontWeight: FontWeight.bold,
-                )
-              : theme.textTheme.bodyMedium,
-        ),
-        maxLines: 1,
-        textDirection: TextDirection.ltr,
-      )..layout(minWidth: 0, maxWidth: double.infinity);
-
-      var buttonWidth = textPainter.width + paddingOnButtons * 2;
-
-      if (availableRowLength - buttonWidth < 0) {
-        rows.add(
-          _buildRow(
-            context,
-            currentRow,
-            availableRowLength,
-          ),
-        );
-        currentRow = <int>[];
-        availableRowLength = width;
-      }
-
-      currentRow.add(i);
-
-      availableRowLength -= buttonWidth + paddingBetweenButtons;
-    }
-    if (currentRow.isNotEmpty) {
-      rows.add(
-        _buildRow(
-          context,
-          currentRow,
-          availableRowLength,
           ),
+        ],
+      ],
     );
   }
-    return rows;
-  }
-
-  @override
-  Widget build(BuildContext context) => Column(
-        children: _buildButtonRows(
-          context,
-        ),
-      );
 }

packages/flutter_shopping/lib/src/models/product.dart

@@ -8,7 +8,8 @@ class Product {
     required this.imageUrl,
     required this.category,
     required this.price,
-    required this.hasDiscount,
+    required this.description,
+    this.hasDiscount = false,
     this.discountPrice,
     this.quantity = 1,
   });
@@ -36,4 +37,7 @@ class Product {
 
   /// Quantity for the product.
   int quantity;
+
+  /// The description of the product.
+  final String description;
 }