Files
stream-chat-flutter/packages/flutter_widgets/lib/src/stream_chat.dart
T

121 lines
3.2 KiB
Dart

import 'dart:async';
import 'package:flutter/foundation.dart';
import 'package:flutter/material.dart';
import 'package:flutter_app_badger/flutter_app_badger.dart';
import 'package:flutter_portal/flutter_portal.dart';
import 'package:stream_chat/stream_chat.dart';
import 'package:stream_chat_flutter/src/stream_chat_theme.dart';
import 'package:stream_chat_flutter/stream_chat_flutter.dart';
/// Widget used to provide information about the chat to the widget tree
///
/// class MyApp extends StatelessWidget {
/// final Client client;
///
/// MyApp(this.client);
///
/// @override
/// Widget build(BuildContext context) {
/// return MaterialApp(
/// home: Container(
/// child: StreamChat(
/// client: client,
/// child: ChannelListPage(),
/// ),
/// ),
/// );
/// }
/// }
///
/// Use [StreamChat.of] to get the current [StreamChatState] instance.
class StreamChat extends StatefulWidget {
final Client client;
final Widget child;
final StreamChatThemeData streamChatThemeData;
StreamChat({
Key key,
@required this.client,
@required this.child,
this.streamChatThemeData,
}) : super(
key: key,
);
@override
StreamChatState createState() => StreamChatState();
/// Use this method to get the current [StreamChatState] instance
static StreamChatState of(BuildContext context) {
StreamChatState streamChatState;
streamChatState = context.findAncestorStateOfType<StreamChatState>();
if (streamChatState == null) {
throw Exception(
'You must have a StreamChat widget at the top of your widget tree');
}
return streamChatState;
}
}
/// The current state of the StreamChat widget
class StreamChatState extends State<StreamChat> {
Client get client => widget.client;
@override
Widget build(BuildContext context) {
final theme = _getTheme(context, widget.streamChatThemeData);
return Portal(
child: StreamChatTheme(
data: theme,
child: Builder(
builder: (context) {
final materialTheme = Theme.of(context);
final streamTheme = StreamChatTheme.of(context);
return Theme(
data: materialTheme.copyWith(
primaryIconTheme: streamTheme.primaryIconTheme,
accentColor: streamTheme.colorTheme.accentBlue,
scaffoldBackgroundColor: streamTheme.colorTheme.white,
),
child: StreamChatCore(
child: widget.child,
client: client,
),
);
},
),
),
);
}
StreamChatThemeData _getTheme(
BuildContext context,
StreamChatThemeData themeData,
) {
final defaultTheme = StreamChatThemeData.getDefaultTheme(Theme.of(context));
return defaultTheme.merge(themeData) ?? themeData;
}
/// The current user
User get user => widget.client.state.user;
/// The current user as a stream
Stream<User> get userStream => widget.client.state.userStream;
@override
void initState() {
super.initState();
client.state?.totalUnreadCountStream?.listen((count) {
if (count > 0) {
FlutterAppBadger.updateBadgeCount(count);
} else {
FlutterAppBadger.removeBadge();
}
});
}
}