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extract screens

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This commit is contained in:
Salvatore Giordano
2020-11-21 11:24:38 +01:00
parent 682c0b3e10
commit d7a8d4f3f9
5 changed files with 840 additions and 821 deletions
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example/lib/new_group_chat_screen.dart
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import 'dart:async';
import 'package:flutter/material.dart';
import 'package:stream_chat_flutter/stream_chat_flutter.dart';
import 'group_chat_details_screen.dart';
class NewGroupChatScreen extends StatefulWidget {
@override
_NewGroupChatScreenState createState() => _NewGroupChatScreenState();
}
class _NewGroupChatScreenState extends State<NewGroupChatScreen> {
TextEditingController _controller;
String _userNameQuery = '';
final _selectedUsers = <User>{};
bool _isSearchActive = false;
Timer _debounce;
void _userNameListener() {
if (_debounce?.isActive ?? false) _debounce.cancel();
_debounce = Timer(const Duration(milliseconds: 350), () {
if (mounted)
setState(() {
_userNameQuery = _controller.text;
_isSearchActive = _userNameQuery.isNotEmpty;
});
});
}
@override
void initState() {
super.initState();
_controller = TextEditingController()..addListener(_userNameListener);
}
@override
void dispose() {
_controller?.clear();
_controller?.removeListener(_userNameListener);
_controller?.dispose();
super.dispose();
}
@override
Widget build(BuildContext context) {
return Scaffold(
backgroundColor: Color.fromRGBO(252, 252, 252, 1),
appBar: AppBar(
elevation: 1,
backgroundColor: Colors.white,
leading: const StreamBackButton(),
title: Text(
'Add Group Members',
style: TextStyle(
color: Colors.black,
fontSize: 16,
),
),
centerTitle: true,
actions: [
if (_selectedUsers.isNotEmpty)
IconButton(
icon: Icon(
StreamIcons.arrow_right,
color: Color(0xFF006CFF),
),
onPressed: () {
Navigator.push(
context,
MaterialPageRoute(
builder: (_) => GroupChatDetailsScreen(
selectedUsers: _selectedUsers.toList(growable: false),
),
),
);
},
)
],
),
body: UsersBloc(
child: Column(
children: [
Container(
height: 36,
decoration: BoxDecoration(
color: Colors.white,
border: Border.all(
color: Colors.grey.shade300,
),
borderRadius: BorderRadius.circular(24),
),
margin: const EdgeInsets.symmetric(
vertical: 8,
horizontal: 8,
),
child: TextField(
controller: _controller,
decoration: InputDecoration(
prefixIcon: Icon(
StreamIcons.search,
color: Colors.black,
size: 24,
),
hintText: 'Search',
hintStyle: TextStyle(
color: Colors.black.withOpacity(0.5),
fontSize: 14,
),
contentPadding: const EdgeInsets.all(0),
border: OutlineInputBorder(
borderSide: BorderSide.none,
borderRadius: BorderRadius.circular(24),
),
),
),
),
if (_selectedUsers.isNotEmpty)
Container(
height: 104,
child: ListView.separated(
scrollDirection: Axis.horizontal,
itemCount: _selectedUsers.length,
padding: const EdgeInsets.all(8),
separatorBuilder: (_, __) => SizedBox(width: 16),
itemBuilder: (_, index) {
final user = _selectedUsers.elementAt(index);
return Column(
children: [
Stack(
children: [
UserAvatar(
onlineIndicatorAlignment: Alignment(0.9, 0.9),
user: user,
showOnlineStatus: true,
borderRadius: BorderRadius.circular(32),
constraints: BoxConstraints.tightFor(
height: 64,
width: 64,
),
),
Positioned(
top: -4,
right: -4,
child: GestureDetector(
onTap: () {
if (_selectedUsers.contains(user)) {
setState(() => _selectedUsers.remove(user));
}
},
child: Container(
decoration: BoxDecoration(
color: Colors.white,
shape: BoxShape.circle,
border: Border.all(
color: Colors.grey.shade100,
),
),
child: Padding(
padding: const EdgeInsets.all(0.0),
child: Icon(
StreamIcons.close,
size: 24,
),
),
),
),
)
],
),
SizedBox(height: 4),
Text(
user.name.split(' ')[0],
style: TextStyle(
fontWeight: FontWeight.bold,
fontSize: 12,
),
),
],
);
},
),
),
Container(
width: double.maxFinite,
decoration: BoxDecoration(
gradient: LinearGradient(
begin: Alignment.centerLeft,
end: Alignment.centerRight,
colors: [
Colors.black.withOpacity(0.02),
Colors.white.withOpacity(0.05),
],
stops: [0, 1],
),
),
child: Padding(
padding: const EdgeInsets.symmetric(
vertical: 8,
horizontal: 8,
),
child: Text(
_isSearchActive
? 'Matches for \"$_userNameQuery\"'
: 'On the platform',
style: TextStyle(
color: Colors.black.withOpacity(0.5),
),
),
),
),
Expanded(
child: UserListView(
selectedUsers: _selectedUsers,
groupAlphabetically: _isSearchActive ? false : true,
onUserTap: (user, _) {
if (!_selectedUsers.contains(user)) {
setState(() {
_selectedUsers.add(user);
});
} else {
setState(() {
_selectedUsers.remove(user);
});
}
},
pagination: PaginationParams(
limit: 25,
),
filter: {
if (_userNameQuery.isNotEmpty)
'name': {
r'$autocomplete': _userNameQuery,
},
'id': {
r'$ne': StreamChat.of(context).user.id,
}
},
sort: [
SortOption(
'name',
direction: 1,
),
],
emptyBuilder: (_) {
return LayoutBuilder(
builder: (context, viewportConstraints) {
return SingleChildScrollView(
physics: AlwaysScrollableScrollPhysics(),
child: ConstrainedBox(
constraints: BoxConstraints(
minHeight: viewportConstraints.maxHeight,
),
child: Center(
child: Column(
children: [
Padding(
padding: const EdgeInsets.all(24),
child: Icon(
StreamIcons.search,
size: 96,
color: Colors.grey,
),
),
Text('No user matches these keywords...'),
],
),
),
),
);
},
);
},
),
),
],
),
),
);
}
}