chat_message_c3 1.0.0

chat_message_c3: ^1.0.0 copied to clipboard

example/lib/main.dart

import 'package:chat_message_c3/core/chat_controller.dart';
import 'package:chat_message_c3/models/message_model.dart';
import 'package:chat_message_c3/widget/chat_list_widget.dart';
import 'package:flutter/material.dart';

void main() {
  runApp(const MyApp());
}

class MyApp extends StatelessWidget {
  const MyApp({super.key});

  // This widget is the root of your application.
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Flutter Demo',
      theme: ThemeData(
        // This is the theme of your application.
        //
        // TRY THIS: Try running your application with "flutter run". You'll see
        // the application has a purple toolbar. Then, without quitting the app,
        // try changing the seedColor in the colorScheme below to Colors.green
        // and then invoke "hot reload" (save your changes or press the "hot
        // reload" button in a Flutter-supported IDE, or press "r" if you used
        // the command line to start the app).
        //
        // Notice that the counter didn't reset back to zero; the application
        // state is not lost during the reload. To reset the state, use hot
        // restart instead.
        //
        // This works for code too, not just values: Most code changes can be
        // tested with just a hot reload.
        colorScheme: ColorScheme.fromSeed(seedColor: Colors.deepPurple),
        useMaterial3: true,
      ),
      home: const MyHomePage(title: 'ChatMessage Example'),
    );
  }
}

class MyHomePage extends StatefulWidget {
  const MyHomePage({super.key, required this.title});

  // This widget is the home page of your application. It is stateful, meaning
  // that it has a State object (defined below) that contains fields that affect
  // how it looks.

  // This class is the configuration for the state. It holds the values (in this
  // case the title) provided by the parent (in this case the App widget) and
  // used by the build method of the State. Fields in a Widget subclass are
  // always marked "final".

  final String title;

  @override
  State<MyHomePage> createState() => _MyHomePageState();
}

class _MyHomePageState extends State<MyHomePage> {
  int count = 0;
  final List<MessageModel> _messageList = [
    MessageModel(
      ownerType: OwnerType.receiver,
      content: 'ChatGPT是由OpenAI开发出的智能聊天机器人程序',
      createAt: 1772058683000,
      id: 2,
      avatar: 'https://o.devio.org/images/o_as/avatar/tx2.jpeg',
      ownerName: 'ChatGPT',
    ),
    MessageModel(
      ownerType: OwnerType.receiver,
      content: '介绍一下ChatGPT',
      createAt: 1771058683000,
      id: 1,
      avatar: 'https://o.devio.org/images/o_as/avatar/tx18.jpeg',
      ownerName: 'Imooc',
    )
  ];
  late ChatController chatController;

  @override
  Widget build(BuildContext context) {
    // This method is rerun every time setState is called, for instance as done
    // by the _incrementCounter method above.
    //
    // The Flutter framework has been optimized to make rerunning build methods
    // fast, so that you can just rebuild anything that needs updating rather
    // than having to individually change instances of widgets.
    return Scaffold(
      appBar: AppBar(
        // TRY THIS: Try changing the color here to a specific color (to
        // Colors.amber, perhaps?) and trigger a hot reload to see the AppBar
        // change color while the other colors stay the same.
        backgroundColor: Theme.of(context).colorScheme.inversePrimary,
        // Here we take the value from the MyHomePage object that was created by
        // the App.build method, and use it to set our appbar title.
        title: Text(widget.title),
      ),
      body: Column(
        children: [
          Expanded(
            child: ChatList(
              chatController: chatController,
              onBubbleTap: (MessageModel message, BuildContext context) {
                debugPrint('onBubbleTap: ${message.content}');
              },
              onBubbleLongPress: (MessageModel message, BuildContext contex) {
                debugPrint('onBubbleLongPress: ${message.content}');
              },
            ),
          ),
          Row(
            mainAxisAlignment: MainAxisAlignment.spaceAround,
            children: [
              ElevatedButton(
                onPressed: _loadMore,
                child: const Text('loadMore'),
              ),
              ElevatedButton(
                onPressed: _send,
                child: const Text('发送'),
              )
            ],
          ),
          const SizedBox(
            height: 20,
          ),
        ],
      ), // This trailing comma makes auto-formatting nicer for build methods.
    );
  }

  @override
  void initState() {
    super.initState();
    chatController = ChatController(
        initialMessageList: _messageList,
        scrollController: ScrollController(),
        // messageWidgetBuilder: _diyMessageWidgetBuilder,
        timePellet: 60);
  }

  void _send() {
    chatController.addMessage(
      MessageModel(
        ownerType: OwnerType.sender,
        content: 'Hello ${count++}',
        createAt: DateTime.now().millisecondsSinceEpoch,
        avatar: 'https://o.devio.org/images/o_as/avatar/tx2.jpeg',
        ownerName: 'Imooc',
      ),
    );
    Future.delayed(
      const Duration(milliseconds: 2000),
      () {
        chatController.addMessage(
          MessageModel(
              ownerType: OwnerType.receiver,
              content: 'Nice',
              createAt: DateTime.now().millisecondsSinceEpoch,
              avatar: 'https://o.devio.org/images/o_as/avatar/tx2.jpeg',
              ownerName: 'ChatGPT'),
        );
      },
    );
  }

  int _counter = 0;
  void _loadMore() {
    var tl = 1772058683000;
    tl = tl - ++_counter * 1000000;
    final List<MessageModel> messageList = [
      MessageModel(
          ownerType: OwnerType.sender,
          content: 'Hello ${_counter++}',
          createAt: DateTime.now().millisecondsSinceEpoch,
          avatar: 'https://o.devio.org/images/o_as/avatar/tx2.jpeg',
          ownerName: 'Imooc'),
      MessageModel(
          ownerType: OwnerType.receiver,
          content: 'Nice',
          createAt: DateTime.now().millisecondsSinceEpoch,
          avatar: 'https://o.devio.org/images/o_as/avatar/tx2.jpeg',
          ownerName: 'ChatGPT'),
    ];
    chatController.loadMoreData(messageList);
  }

  Widget _diyMessageWidgetBuilder(MessageModel message) {
    return Container(
      margin: EdgeInsets.only(top: 10, bottom: 10),
      padding: EdgeInsets.only(top: 30, bottom: 30),
      decoration: BoxDecoration(
        color: message.ownerType == OwnerType.sender
            ? Colors.amberAccent
            : Colors.redAccent,
      ),
      child: Text('${message.ownerName}: ${message.content}'),
    );
  }
}