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samples/shrine/lib/category_menu_page.dart

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2.7 KiB

// 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/material.dart';
import 'package:scoped_model/scoped_model.dart';
import 'colors.dart';
import 'model/app_state_model.dart';
import 'model/product.dart';
class CategoryMenuPage extends StatelessWidget {
final List<Category> _categories = Category.values;
final VoidCallback onCategoryTap;
const CategoryMenuPage({
Key key,
this.onCategoryTap,
}) : super(key: key);
Widget _buildCategory(Category category, BuildContext context) {
final categoryString =
category.toString().replaceAll('Category.', '').toUpperCase();
final ThemeData theme = Theme.of(context);
return ScopedModelDescendant<AppStateModel>(
builder: (context, child, model) => GestureDetector(
onTap: () {
model.setCategory(category);
if (onCategoryTap != null) onCategoryTap();
},
child: model.selectedCategory == category
? Column(
children: <Widget>[
SizedBox(height: 16.0),
Text(
categoryString,
style: theme.textTheme.body2,
textAlign: TextAlign.center,
),
SizedBox(height: 14.0),
Container(
width: 70.0,
height: 2.0,
color: kShrinePink400,
),
],
)
: Padding(
padding: EdgeInsets.symmetric(vertical: 16.0),
child: Text(
categoryString,
style: theme.textTheme.body2
.copyWith(color: kShrineBrown900.withAlpha(153)),
textAlign: TextAlign.center,
),
),
),
);
}
@override
Widget build(BuildContext context) {
return Center(
child: Container(
padding: EdgeInsets.only(top: 40.0),
color: kShrinePink100,
child: ListView(
children: _categories.map((c) => _buildCategory(c, context)).toList(),
),
),
);
}
}