// 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'; import 'package:flutter/services.dart'; class _ContactCategory extends StatelessWidget { const _ContactCategory({ this.icon, this.children }); final IconData? icon; final List<Widget>? children; @override Widget build(BuildContext context) { final ThemeData themeData = Theme.of(context); return Container( padding: const EdgeInsets.symmetric(vertical: 16.0), decoration: BoxDecoration( border: Border(bottom: BorderSide(color: themeData.dividerColor)) ), child: DefaultTextStyle( style: Theme.of(context).textTheme.subtitle1!, child: SafeArea( top: false, bottom: false, child: Row( crossAxisAlignment: CrossAxisAlignment.start, children: <Widget>[ Container( padding: const EdgeInsets.symmetric(vertical: 24.0), width: 72.0, child: Icon(icon, color: themeData.primaryColor), ), Expanded(child: Column(children: children!)), ], ), ), ), ); } } class _ContactItem extends StatelessWidget { const _ContactItem({ this.icon, required this.lines, this.tooltip, this.onPressed }) : assert(lines.length > 1); final IconData? icon; final List<String> lines; final String? tooltip; final VoidCallback? onPressed; @override Widget build(BuildContext context) { final ThemeData themeData = Theme.of(context); return MergeSemantics( child: Padding( padding: const EdgeInsets.symmetric(vertical: 16.0), child: Row( mainAxisAlignment: MainAxisAlignment.spaceBetween, children: <Widget>[ Expanded( child: Column( crossAxisAlignment: CrossAxisAlignment.start, children: <Widget>[ ...lines.sublist(0, lines.length - 1).map<Widget>((String line) => Text(line)), Text(lines.last, style: themeData.textTheme.caption), ], ), ), if (icon != null) SizedBox( width: 72.0, child: IconButton( icon: Icon(icon), color: themeData.primaryColor, onPressed: onPressed, ), ), ], ), ), ); } } class ContactsDemo extends StatefulWidget { const ContactsDemo({super.key}); static const String routeName = '/contacts'; @override ContactsDemoState createState() => ContactsDemoState(); } enum AppBarBehavior { normal, pinned, floating, snapping } class ContactsDemoState extends State<ContactsDemo> { final double _appBarHeight = 256.0; AppBarBehavior _appBarBehavior = AppBarBehavior.pinned; @override Widget build(BuildContext context) { return Theme( data: ThemeData( brightness: Brightness.light, primarySwatch: Colors.indigo, platform: Theme.of(context).platform, ), child: Scaffold( body: CustomScrollView( slivers: <Widget>[ SliverAppBar( expandedHeight: _appBarHeight, pinned: _appBarBehavior == AppBarBehavior.pinned, floating: _appBarBehavior == AppBarBehavior.floating || _appBarBehavior == AppBarBehavior.snapping, snap: _appBarBehavior == AppBarBehavior.snapping, actions: <Widget>[ IconButton( icon: const Icon(Icons.create), tooltip: 'Edit', onPressed: () { ScaffoldMessenger.of(context).showSnackBar(const SnackBar( content: Text("Editing isn't supported in this screen."), )); }, ), PopupMenuButton<AppBarBehavior>( onSelected: (AppBarBehavior value) { setState(() { _appBarBehavior = value; }); }, itemBuilder: (BuildContext context) => <PopupMenuItem<AppBarBehavior>>[ const PopupMenuItem<AppBarBehavior>( value: AppBarBehavior.normal, child: Text('App bar scrolls away'), ), const PopupMenuItem<AppBarBehavior>( value: AppBarBehavior.pinned, child: Text('App bar stays put'), ), const PopupMenuItem<AppBarBehavior>( value: AppBarBehavior.floating, child: Text('App bar floats'), ), const PopupMenuItem<AppBarBehavior>( value: AppBarBehavior.snapping, child: Text('App bar snaps'), ), ], ), ], flexibleSpace: FlexibleSpaceBar( title: const Text('Ali Connors'), background: Stack( fit: StackFit.expand, children: <Widget>[ Image.asset( 'people/ali_landscape.png', package: 'flutter_gallery_assets', fit: BoxFit.cover, height: _appBarHeight, ), // This gradient ensures that the toolbar icons are distinct // against the background image. const DecoratedBox( decoration: BoxDecoration( gradient: LinearGradient( begin: Alignment.topCenter, end: Alignment(0, .35), colors: <Color>[Color(0xC0000000), Color(0x00000000)], ), ), ), ], ), ), ), SliverList( delegate: SliverChildListDelegate(<Widget>[ AnnotatedRegion<SystemUiOverlayStyle>( value: SystemUiOverlayStyle.dark, child: _ContactCategory( icon: Icons.call, children: <Widget>[ _ContactItem( icon: Icons.message, tooltip: 'Send message', onPressed: () { ScaffoldMessenger.of(context).showSnackBar(const SnackBar( content: Text('Pretend that this opened your SMS application.'), )); }, lines: const <String>[ '(650) 555-1234', 'Mobile', ], ), _ContactItem( icon: Icons.message, tooltip: 'Send message', onPressed: () { ScaffoldMessenger.of(context).showSnackBar(const SnackBar( content: Text('A messaging app appears.'), )); }, lines: const <String>[ '(323) 555-6789', 'Work', ], ), _ContactItem( icon: Icons.message, tooltip: 'Send message', onPressed: () { ScaffoldMessenger.of(context).showSnackBar(const SnackBar( content: Text('Imagine if you will, a messaging application.'), )); }, lines: const <String>[ '(650) 555-6789', 'Home', ], ), ], ), ), _ContactCategory( icon: Icons.contact_mail, children: <Widget>[ _ContactItem( icon: Icons.email, tooltip: 'Send personal e-mail', onPressed: () { ScaffoldMessenger.of(context).showSnackBar(const SnackBar( content: Text('Here, your e-mail application would open.'), )); }, lines: const <String>[ 'ali_connors@example.com', 'Personal', ], ), _ContactItem( icon: Icons.email, tooltip: 'Send work e-mail', onPressed: () { ScaffoldMessenger.of(context).showSnackBar(const SnackBar( content: Text('Summon your favorite e-mail application here.'), )); }, lines: const <String>[ 'aliconnors@example.com', 'Work', ], ), ], ), _ContactCategory( icon: Icons.location_on, children: <Widget>[ _ContactItem( icon: Icons.map, tooltip: 'Open map', onPressed: () { ScaffoldMessenger.of(context).showSnackBar(const SnackBar( content: Text('This would show a map of San Francisco.'), )); }, lines: const <String>[ '2000 Main Street', 'San Francisco, CA', 'Home', ], ), _ContactItem( icon: Icons.map, tooltip: 'Open map', onPressed: () { ScaffoldMessenger.of(context).showSnackBar(const SnackBar( content: Text('This would show a map of Mountain View.'), )); }, lines: const <String>[ '1600 Amphitheater Parkway', 'Mountain View, CA', 'Work', ], ), _ContactItem( icon: Icons.map, tooltip: 'Open map', onPressed: () { ScaffoldMessenger.of(context).showSnackBar(const SnackBar( content: Text('This would also show a map, if this was not a demo.'), )); }, lines: const <String>[ '126 Severyns Ave', 'Mountain View, CA', 'Jet Travel', ], ), ], ), _ContactCategory( icon: Icons.today, children: <Widget>[ _ContactItem( lines: const <String>[ 'Birthday', 'January 9th, 1989', ], ), _ContactItem( lines: const <String>[ 'Wedding anniversary', 'June 21st, 2014', ], ), _ContactItem( lines: const <String>[ 'First day in office', 'January 20th, 2015', ], ), _ContactItem( lines: const <String>[ 'Last day in office', 'August 9th, 2018', ], ), ], ), ]), ), ], ), ), ); } }