OpenContacts/lib/widgets/messages/messages_list.dart

291 lines
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Dart
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import 'package:contacts_plus_plus/client_holder.dart';
import 'package:contacts_plus_plus/clients/messaging_client.dart';
import 'package:contacts_plus_plus/models/friend.dart';
import 'package:contacts_plus_plus/models/message.dart';
import 'package:contacts_plus_plus/widgets/friends/friend_online_status_indicator.dart';
import 'package:contacts_plus_plus/widgets/messages/messages_session_header.dart';
import 'package:flutter/material.dart';
import 'package:provider/provider.dart';
import 'message_bubble.dart';
class MessagesList extends StatefulWidget {
const MessagesList({required this.friend, super.key});
final Friend friend;
@override
State<StatefulWidget> createState() => _MessagesListState();
}
class _MessagesListState extends State<MessagesList> with SingleTickerProviderStateMixin {
final TextEditingController _messageTextController = TextEditingController();
final ScrollController _sessionListScrollController = ScrollController();
final ScrollController _messageScrollController = ScrollController();
bool _isSendable = false;
bool _showSessionListScrollChevron = false;
bool _showBottomBarShadow = false;
double get _shevronOpacity => _showSessionListScrollChevron ? 1.0 : 0.0;
@override
void dispose() {
_messageTextController.dispose();
_sessionListScrollController.dispose();
super.dispose();
}
@override
void initState() {
super.initState();
_sessionListScrollController.addListener(() {
if (_sessionListScrollController.position.maxScrollExtent > 0 && !_showSessionListScrollChevron) {
setState(() {
_showSessionListScrollChevron = true;
});
}
if (_sessionListScrollController.position.atEdge && _sessionListScrollController.position.pixels > 0
&& _showSessionListScrollChevron) {
setState(() {
_showSessionListScrollChevron = false;
});
}
});
_messageScrollController.addListener(() {
if (!_messageScrollController.hasClients) return;
if (_messageScrollController.position.atEdge && _messageScrollController.position.pixels == 0 &&
_showBottomBarShadow) {
setState(() {
_showBottomBarShadow = false;
});
} else if (!_showBottomBarShadow) {
setState(() {
_showBottomBarShadow = true;
});
}
});
}
@override
Widget build(BuildContext context) {
final apiClient = ClientHolder
.of(context)
.apiClient;
var sessions = widget.friend.userStatus.activeSessions;
final appBarColor = Theme
.of(context)
.colorScheme
.surfaceVariant;
return Scaffold(
appBar: AppBar(
title: Row(
crossAxisAlignment: CrossAxisAlignment.center,
children: [
FriendOnlineStatusIndicator(userStatus: widget.friend.userStatus),
const SizedBox(width: 8,),
Text(widget.friend.username),
if (widget.friend.isHeadless) Padding(
padding: const EdgeInsets.only(left: 12),
child: Icon(Icons.dns, size: 18, color: Theme
.of(context)
.colorScheme
.onSecondaryContainer
.withAlpha(150),),
),
],
),
scrolledUnderElevation: 0.0,
backgroundColor: appBarColor,
),
body: Column(
children: [
if (sessions.isNotEmpty) Container(
constraints: const BoxConstraints(maxHeight: 64),
decoration: BoxDecoration(
color: appBarColor,
border: const Border(top: BorderSide(width: 1, color: Colors.black26),)
),
child: Stack(
children: [
ListView.builder(
controller: _sessionListScrollController,
scrollDirection: Axis.horizontal,
itemCount: sessions.length,
itemBuilder: (context, index) => SessionTile(session: sessions[index]),
),
AnimatedOpacity(
opacity: _shevronOpacity,
curve: Curves.easeOut,
duration: const Duration(milliseconds: 200),
child: Align(
alignment: Alignment.centerRight,
child: Container(
padding: const EdgeInsets.only(left: 16, right: 4, top: 1, bottom: 1),
decoration: BoxDecoration(
gradient: LinearGradient(
begin: Alignment.centerLeft,
end: Alignment.centerRight,
colors: [
appBarColor.withOpacity(0),
appBarColor,
appBarColor,
],
),
),
height: double.infinity,
child: const Icon(Icons.chevron_right),
),
),
)
],
),
),
Expanded(
child: Consumer<MessagingClient>(
builder: (context, mClient, _) {
final cache = mClient.getUserMessageCache(widget.friend.id);
if (cache == null) {
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return const Column(
mainAxisAlignment: MainAxisAlignment.start,
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children: [
LinearProgressIndicator()
],
);
}
if (cache.messages.isEmpty) {
return Center(
child: Column(
mainAxisAlignment: MainAxisAlignment.center,
children: [
const Icon(Icons.message_outlined),
Padding(
padding: const EdgeInsets.symmetric(vertical: 24),
child: Text(
"There are no messages here\nWhy not say hello?",
textAlign: TextAlign.center,
style: Theme
.of(context)
.textTheme
.titleMedium,
),
)
],
),
);
}
return ListView.builder(
controller: _messageScrollController,
reverse: true,
itemCount: cache.messages.length,
itemBuilder: (context, index) {
final entry = cache.messages[index];
if (index == cache.messages.length - 1) {
return Padding(
padding: const EdgeInsets.only(top: 12),
child: MessageBubble(message: entry,),
);
}
return MessageBubble(message: entry,);
},
);
},
),
),
AnimatedContainer(
decoration: BoxDecoration(
boxShadow: [
BoxShadow(
blurRadius: _showBottomBarShadow ? 8 : 0,
color: Theme.of(context).shadowColor,
offset: const Offset(0, 4),
),
],
color: Theme.of(context).colorScheme.background,
),
padding: const EdgeInsets.symmetric(horizontal: 4),
duration: const Duration(milliseconds: 250),
child: Row(
children: [
Expanded(
child: Padding(
padding: const EdgeInsets.all(8),
child: TextField(
autocorrect: true,
controller: _messageTextController,
maxLines: 4,
minLines: 1,
onChanged: (text) {
if (text.isNotEmpty && !_isSendable) {
setState(() {
_isSendable = true;
});
} else if (text.isEmpty && _isSendable) {
setState(() {
_isSendable = false;
});
}
},
decoration: InputDecoration(
isDense: true,
hintText: "Send a message to ${widget.friend
.username}...",
contentPadding: const EdgeInsets.symmetric(horizontal: 16, vertical: 12),
border: OutlineInputBorder(
borderRadius: BorderRadius.circular(24)
)
),
),
),
),
Padding(
padding: const EdgeInsets.only(left: 8, right: 4.0),
child: Consumer<MessagingClient>(
builder: (context, mClient, _) {
return IconButton(
splashRadius: 24,
onPressed: _isSendable ? () async {
setState(() {
_isSendable = false;
});
final message = Message(
id: Message.generateId(),
recipientId: widget.friend.id,
senderId: apiClient.userId,
type: MessageType.text,
content: _messageTextController.text,
sendTime: DateTime.now().toUtc(),
);
try {
mClient.sendMessage(message);
_messageTextController.clear();
setState(() {});
} catch (e) {
ScaffoldMessenger.of(context).showSnackBar(
SnackBar(
content: Text("Failed to send message\n$e",
maxLines: null,
),
),
);
setState(() {
_isSendable = true;
});
}
} : null,
iconSize: 28,
icon: const Icon(Icons.send),
);
},
),
)
],
),
),
],
),
);
}
}