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Code Issues Releases Wiki Activity

Adding shrine. (#3)

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Adds a new version of Shrine from the MDC codelabs.
This commit is contained in:
Andrew Brogdon
2018-07-26 15:27:26 -07:00
committed by GitHub
parent 357d172647
commit 434a703725
81 changed files with 3291 additions and 0 deletions
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107
shrine/lib/model/app_state_model.dart Normal file
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// Copyright 2018-present the Flutter authors. All Rights Reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
import 'package:scoped_model/scoped_model.dart';
import 'product.dart';
import 'products_repository.dart';
double _salesTaxRate = 0.06;
double _shippingCostPerItem = 7.0;
class AppStateModel extends Model {
// All the available products.
List<Product> _availableProducts;
// The currently selected category of products.
Category _selectedCategory = Category.all;
// The IDs and quantities of products currently in the cart.
Map<int, int> _productsInCart = {};
Map<int, int> get productsInCart => Map.from(_productsInCart);
// Total number of items in the cart.
int get totalCartQuantity => _productsInCart.values.fold(0, (v, e) => v + e);
Category get selectedCategory => _selectedCategory;
// Totaled prices of the items in the cart.
double get subtotalCost => _productsInCart.keys
.map((id) => _availableProducts[id].price * _productsInCart[id])
.fold(0.0, (sum, e) => sum + e);
// Total shipping cost for the items in the cart.
double get shippingCost =>
_shippingCostPerItem *
_productsInCart.values.fold(0.0, (sum, e) => sum + e);
// Sales tax for the items in the cart
double get tax => subtotalCost * _salesTaxRate;
// Total cost to order everything in the cart.
double get totalCost => subtotalCost + shippingCost + tax;
// Returns a copy of the list of available products, filtered by category.
List<Product> getProducts() {
if (_availableProducts == null) return List<Product>();
if (_selectedCategory == Category.all) {
return List.from(_availableProducts);
} else {
return _availableProducts.where((p) => p.category == _selectedCategory);
}
}
// Adds a product to the cart.
void addProductToCart(int productId) {
if (!_productsInCart.containsKey(productId)) {
_productsInCart[productId] = 1;
} else {
_productsInCart[productId]++;
}
notifyListeners();
}
// Removes an item from the cart.
void removeItemFromCart(int productId) {
if (_productsInCart.containsKey(productId)) {
if (_productsInCart[productId] == 1) {
_productsInCart.remove(productId);
} else {
_productsInCart[productId]--;
}
}
notifyListeners();
}
// Returns the Product instance matching the provided id.
Product getProductById(int id) {
return _availableProducts.firstWhere((p) => p.id == id);
}
// Removes everything from the cart.
void clearCart() {
_productsInCart.clear();
notifyListeners();
}
// Loads the list of available products from the repo.
void loadProducts() {
_availableProducts = ProductsRepository.loadProducts();
notifyListeners();
}
}

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shrine/lib/model/product.dart Normal file
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// Copyright 2018-present the Flutter authors. All Rights Reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
import 'package:flutter/foundation.dart';
enum Category {
all,
accessories,
clothing,
home,
}
class Product {
const Product({
@required this.category,
@required this.id,
@required this.isFeatured,
@required this.name,
@required this.price,
}) : assert(category != null),
assert(id != null),
assert(isFeatured != null),
assert(name != null),
assert(price != null);
final Category category;
final int id;
final bool isFeatured;
final String name;
final int price;
String get assetName => '$id-0.jpg';
String get assetPackage => 'shrine_images';
@override
String toString() => '$name (id=$id)';
}

288
shrine/lib/model/products_repository.dart Normal file
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// Copyright 2018-present the Flutter authors. All Rights Reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
import 'product.dart';
class ProductsRepository {
static List<Product> loadProducts() {
return const [
Product(
category: Category.accessories,
id: 0,
isFeatured: true,
name: 'Vagabond sack',
price: 120,
),
Product(
category: Category.accessories,
id: 1,
isFeatured: true,
name: 'Stella sunglasses',
price: 58,
),
Product(
category: Category.accessories,
id: 2,
isFeatured: false,
name: 'Whitney belt',
price: 35,
),
Product(
category: Category.accessories,
id: 3,
isFeatured: true,
name: 'Garden strand',
price: 98,
),
Product(
category: Category.accessories,
id: 4,
isFeatured: false,
name: 'Strut earrings',
price: 34,
),
Product(
category: Category.accessories,
id: 5,
isFeatured: false,
name: 'Varsity socks',
price: 12,
),
Product(
category: Category.accessories,
id: 6,
isFeatured: false,
name: 'Weave keyring',
price: 16,
),
Product(
category: Category.accessories,
id: 7,
isFeatured: true,
name: 'Gatsby hat',
price: 40,
),
Product(
category: Category.accessories,
id: 8,
isFeatured: true,
name: 'Shrug bag',
price: 198,
),
Product(
category: Category.home,
id: 9,
isFeatured: true,
name: 'Gilt desk trio',
price: 58,
),
Product(
category: Category.home,
id: 10,
isFeatured: false,
name: 'Copper wire rack',
price: 18,
),
Product(
category: Category.home,
id: 11,
isFeatured: false,
name: 'Soothe ceramic set',
price: 28,
),
Product(
category: Category.home,
id: 12,
isFeatured: false,
name: 'Hurrahs tea set',
price: 34,
),
Product(
category: Category.home,
id: 13,
isFeatured: true,
name: 'Blue stone mug',
price: 18,
),
Product(
category: Category.home,
id: 14,
isFeatured: true,
name: 'Rainwater tray',
price: 27,
),
Product(
category: Category.home,
id: 15,
isFeatured: true,
name: 'Chambray napkins',
price: 16,
),
Product(
category: Category.home,
id: 16,
isFeatured: true,
name: 'Succulent planters',
price: 16,
),
Product(
category: Category.home,
id: 17,
isFeatured: false,
name: 'Quartet table',
price: 175,
),
Product(
category: Category.home,
id: 18,
isFeatured: true,
name: 'Kitchen quattro',
price: 129,
),
Product(
category: Category.clothing,
id: 19,
isFeatured: false,
name: 'Clay sweater',
price: 48,
),
Product(
category: Category.clothing,
id: 20,
isFeatured: false,
name: 'Sea tunic',
price: 45,
),
Product(
category: Category.clothing,
id: 21,
isFeatured: false,
name: 'Plaster tunic',
price: 38,
),
Product(
category: Category.clothing,
id: 22,
isFeatured: false,
name: 'White pinstripe shirt',
price: 70,
),
Product(
category: Category.clothing,
id: 23,
isFeatured: false,
name: 'Chambray shirt',
price: 70,
),
Product(
category: Category.clothing,
id: 24,
isFeatured: true,
name: 'Seabreeze sweater',
price: 60,
),
Product(
category: Category.clothing,
id: 25,
isFeatured: false,
name: 'Gentry jacket',
price: 178,
),
Product(
category: Category.clothing,
id: 26,
isFeatured: false,
name: 'Navy trousers',
price: 74,
),
Product(
category: Category.clothing,
id: 27,
isFeatured: true,
name: 'Walter henley (white)',
price: 38,
),
Product(
category: Category.clothing,
id: 28,
isFeatured: true,
name: 'Surf and perf shirt',
price: 48,
),
Product(
category: Category.clothing,
id: 29,
isFeatured: true,
name: 'Ginger scarf',
price: 98,
),
Product(
category: Category.clothing,
id: 30,
isFeatured: true,
name: 'Ramona crossover',
price: 68,
),
Product(
category: Category.clothing,
id: 31,
isFeatured: false,
name: 'Chambray shirt',
price: 38,
),
Product(
category: Category.clothing,
id: 32,
isFeatured: false,
name: 'Classic white collar',
price: 58,
),
Product(
category: Category.clothing,
id: 33,
isFeatured: true,
name: 'Cerise scallop tee',
price: 42,
),
Product(
category: Category.clothing,
id: 34,
isFeatured: false,
name: 'Shoulder rolls tee',
price: 27,
),
Product(
category: Category.clothing,
id: 35,
isFeatured: false,
name: 'Grey slouch tank',
price: 24,
),
Product(
category: Category.clothing,
id: 36,
isFeatured: false,
name: 'Sunshirt dress',
price: 58,
),
Product(
category: Category.clothing,
id: 37,
isFeatured: true,
name: 'Fine lines tee',
price: 58,
),
];
}
}