flutter/examples/api/lib/material/dropdown_menu/dropdown_menu.0.dart
Qun Cheng 8b86d238b4
Create DropdownMenu Widget to Support Material 3 (#116088)
* Created ComboBox

* Fixed failing tests

* Reverted the menu style tests change

* Addressed comments

* Updated documentation and rename foregroundColor variable

* Remamed ComboBox to DropdownMenu

* Removed a unused import

* Removed unused import

Co-authored-by: Qun Cheng <quncheng@google.com>
2022-11-29 22:36:35 +00:00

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2.2 KiB
Dart

// Copyright 2014 The Flutter Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
/// Flutter code sample for [DropdownMenu]s. The first dropdown menu has an outlined border
/// which is the default configuration, and the second one has a filled input decoration.
import 'package:flutter/material.dart';
void main() => runApp(const DropdownMenuExample());
class DropdownMenuExample extends StatelessWidget {
const DropdownMenuExample({super.key});
List<DropdownMenuEntry> getEntryList() {
final List<DropdownMenuEntry> entries = <DropdownMenuEntry>[];
for (int index = 0; index < EntryLabel.values.length; index++) {
// Disabled item 1, 2 and 6.
final bool enabled = index != 1 && index != 2 && index != 6;
entries.add(DropdownMenuEntry(label: EntryLabel.values[index].label, enabled: enabled));
}
return entries;
}
@override
Widget build(BuildContext context) {
final List<DropdownMenuEntry> dropdownMenuEntries = getEntryList();
return MaterialApp(
theme: ThemeData(
useMaterial3: true,
colorSchemeSeed: Colors.green
),
home: Scaffold(
body: SafeArea(
child: Padding(
padding: const EdgeInsets.only(top: 20),
child: Row(
mainAxisAlignment: MainAxisAlignment.center,
children: <Widget>[
DropdownMenu(
label: const Text('Label'),
dropdownMenuEntries: dropdownMenuEntries,
),
const SizedBox(width: 20),
DropdownMenu(
enableFilter: true,
leadingIcon: const Icon(Icons.search),
label: const Text('Label'),
dropdownMenuEntries: dropdownMenuEntries,
inputDecorationTheme: const InputDecorationTheme(filled: true),
)
],
),
)
),
),
);
}
}
enum EntryLabel {
item0('Item 0'),
item1('Item 1'),
item2('Item 2'),
item3('Item 3'),
item4('Item 4'),
item5('Item 5'),
item6('Item 6');
const EntryLabel(this.label);
final String label;
}