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Implement thread loading

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This commit is contained in:
ChronosX88 2022-04-15 07:03:42 +03:00
parent fabb0767b5
commit 839f91d735
Signed by: ChronosXYZ
GPG Key ID: 085A69A82C8C511A
6 changed files with 202 additions and 2 deletions
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7
lib/main.dart
View File

@ -3,6 +3,7 @@ import 'package:provider/provider.dart';
import 'package:wind/newsgroup_list_view.dart';
import 'package:wind/nntp_client.dart';
import 'package:wind/thread_list_view.dart';
import 'package:wind/thread_model.dart';
import 'package:wind/thread_screen.dart';
import 'thread_list_model.dart';
@ -16,6 +17,12 @@ void main() {
model!.client = client;
return model;
}),
ChangeNotifierProxyProvider<NNTPClient, ThreadModel>(
create: (context) => ThreadModel(),
update: (context, client, model) {
model!.client = client;
return model;
}),
], child: MyApp()));
}

80
lib/message_item_view.dart Normal file
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@ -0,0 +1,80 @@
import 'package:flutter/material.dart';
class MessageItemView extends StatelessWidget {
const MessageItemView({Key? key, required this.item, required this.isOpPost})
: super(key: key);
final MessageItem item;
final bool isOpPost;
@override
Widget build(BuildContext context) {
return Container(
margin: this.isOpPost ? EdgeInsets.only(bottom: 10) : EdgeInsets.all(0),
child: Card(
elevation: 5,
child: InkWell(
splashColor: Colors.indigo.withAlpha(30),
onTap: () => {},
child: Column(
crossAxisAlignment: CrossAxisAlignment.start,
mainAxisSize: MainAxisSize.min,
children: [
isOpPost
? Container(
child: Text(
item.subject!,
style: TextStyle(
fontWeight: FontWeight.bold, fontSize: 21),
),
margin: EdgeInsets.only(top: 16, left: 16, right: 16),
)
: Container(),
Container(
child: Row(
children: [
Text(
item.author,
style: TextStyle(
fontWeight: FontWeight.normal,
color: Colors.blue,
fontSize: 15),
),
SizedBox(width: 5),
Text(
item.date,
style: TextStyle(fontSize: 15),
),
SizedBox(width: 5),
Text(
"#${item.number}",
style: TextStyle(fontSize: 15, color: Colors.grey),
)
],
),
margin: isOpPost
? EdgeInsets.only(
top: 5, bottom: 2, left: 16, right: 16)
: EdgeInsets.only(top: 16, left: 16),
),
Container(
child: Text(item.body, style: TextStyle(fontSize: 17)),
margin: EdgeInsets.all(16),
)
],
),
)));
}
}
class MessageItem {
final String id;
final int number;
final String? subject;
final String author;
final String date;
final String body;
MessageItem(
this.id, this.number, this.subject, this.author, this.date, this.body);
}

25
lib/nntp_client.dart
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@ -126,6 +126,31 @@ class NNTPClient {
return threads;
}
Future<List<Tuple2<int, MimeMessage>>> getThread(
int threadNumber) async {
if (currentGroup == null) throw new ArgumentError("current group is null");
List<Tuple2<int, MimeMessage>> threads = [];
var newThreadList = await _sendCommand(
"THREAD", [threadNumber.toString()]);
newThreadList.lines.removeAt(0);
newThreadList.lines.removeLast(); // remove dot
await Future.forEach<String>(newThreadList.lines, (element) async {
await _sendCommand("ARTICLE", [element]).then((response) {
response.lines.removeAt(0);
response.lines.removeLast();
var rawMsg = response.lines.join("\r\n");
threads
.add(Tuple2(int.parse(element), MimeMessage.parseFromText(rawMsg)));
});
});
return threads;
}
}
class _NNTPCommand {

9
lib/thread_list_view.dart
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@ -1,6 +1,7 @@
import 'package:flutter/material.dart';
import 'package:provider/provider.dart';
import 'package:wind/thread_list_model.dart';
import 'package:wind/thread_screen.dart';
class ThreadListView extends StatefulWidget {
@override
@ -96,7 +97,8 @@ class ThreadListItemView extends StatelessWidget {
elevation: 5,
child: InkWell(
splashColor: Colors.indigo.withAlpha(30),
onTap: () => Navigator.pushNamed(context, "/thread"),
onTap: () => Navigator.pushNamed(context, "/thread",
arguments: ThreadScreenArguments(item)),
child: Column(
crossAxisAlignment: CrossAxisAlignment.start,
mainAxisSize: MainAxisSize.min,
@ -123,6 +125,11 @@ class ThreadListItemView extends StatelessWidget {
item.date,
style: TextStyle(fontSize: 15),
),
SizedBox(width: 5),
Text(
"#${item.number}",
style: TextStyle(fontSize: 15, color: Colors.grey),
)
],
),
margin: EdgeInsets.only(top: 5, bottom: 2, left: 16, right: 16),

29
lib/thread_model.dart Normal file
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@ -0,0 +1,29 @@
import 'package:flutter/cupertino.dart';
import 'package:wind/message_item_view.dart';
import 'package:wind/nntp_client.dart';
class ThreadModel extends ChangeNotifier {
NNTPClient? client;
Future<List<MessageItem>> getThread(int threadNumber) async {
if (client!.currentGroup == "") return [];
List<MessageItem> items = [];
var thread = await client!.getThread(threadNumber);
thread.forEach((pair) {
var messageNum = pair.item1;
var message = pair.item2;
items.add(MessageItem(
message.getHeaderValue("Message-Id")!,
messageNum,
null,
message.getHeaderValue("From")!,
message.getHeaderValue("Date")!,
message.decodeTextPlainPart()!));
});
return items;
}
}

54
lib/thread_screen.dart
View File

@ -1,4 +1,15 @@
import 'package:flutter/material.dart';
import 'package:provider/provider.dart';
import 'package:wind/message_item_view.dart';
import 'package:wind/nntp_client.dart';
import 'package:wind/thread_list_view.dart';
import 'package:wind/thread_model.dart';
class ThreadScreenArguments {
final ThreadItem item;
ThreadScreenArguments(this.item);
}
class ThreadScreen extends StatefulWidget {
@override
@ -6,12 +17,53 @@ class ThreadScreen extends StatefulWidget {
}
class ThreadScreenState extends State<ThreadScreen> {
late NNTPClient client;
late int threadNumber;
@override
Widget build(BuildContext context) {
var args =
ModalRoute.of(context)!.settings.arguments as ThreadScreenArguments;
client = context.read<NNTPClient>();
threadNumber = args.item.number;
return Scaffold(
appBar: AppBar(
title: Text("Thread"),
title: Text("Thread #${args.item.number}"),
),
body: Center(
child: Container(
width: 640,
child: FutureBuilder<List<MessageItem>>(
future: _fetch(context),
builder: (context, snapshot) {
if (snapshot.hasData) {
List<MessageItem> data = List.from(snapshot.data!);
data.insert(
0,
MessageItem(args.item.id, args.item.number, args.item.subject,
args.item.author, args.item.date, args.item.body));
return _listView(data);
} else if (snapshot.hasError) {
return Text("${snapshot.error}");
}
return Center(child: CircularProgressIndicator());
},
),
)),
);
}
Future<List<MessageItem>> _fetch(BuildContext context) async {
var model = context.read<ThreadModel>();
return await model.getThread(threadNumber);
}
Widget _listView(List<MessageItem> data) {
return ListView.builder(
itemCount: data.length,
itemBuilder: (context, index) {
return MessageItemView(item: data[index], isOpPost: index == 0);
});
}
}