flutter/examples/api/lib/material/scaffold/scaffold.drawer.0.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.

import 'package:flutter/material.dart';

/// Flutter code sample for [Scaffold.drawer].

void main() => runApp(const DrawerExampleApp());

class DrawerExampleApp extends StatelessWidget {
  const DrawerExampleApp({super.key});

  @override
  Widget build(BuildContext context) {
    return const MaterialApp(home: DrawerExample());
  }
}

class DrawerExample extends StatefulWidget {
  const DrawerExample({super.key});

  @override
  State<DrawerExample> createState() => _DrawerExampleState();
}

class _DrawerExampleState extends State<DrawerExample> {
  final GlobalKey<ScaffoldState> _scaffoldKey = GlobalKey<ScaffoldState>();

  void _openDrawer() {
    _scaffoldKey.currentState!.openDrawer();
  }

  void _closeDrawer() {
    Navigator.of(context).pop();
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      key: _scaffoldKey,
      appBar: AppBar(title: const Text('Drawer Demo')),
      body: Center(child: ElevatedButton(onPressed: _openDrawer, child: const Text('Open Drawer'))),
      drawer: Drawer(
        child: Center(
          child: Column(
            mainAxisAlignment: MainAxisAlignment.center,
            children: <Widget>[
              const Text('This is the Drawer'),
              ElevatedButton(onPressed: _closeDrawer, child: const Text('Close Drawer')),
            ],
          ),
        ),
      ),
      // Disable opening the drawer with a swipe gesture.
      drawerEnableOpenDragGesture: false,
    );
  }
}