rustdesk/lib/models/chat_model.dart

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import 'dart:convert';
import 'package:dash_chat/dash_chat.dart';
import 'package:flutter/material.dart';
import 'package:flutter_hbb/pages/chat_page.dart';
import 'model.dart';
class ChatModel with ChangeNotifier {
// -1作为客户端模式的id客户端模式下此id唯一
// 其它正整数的id来自被控服务器模式下的其他客户端的id每个客户端有不同的id
// 注意 此id和peer_id不同服务端模式下的id等同于conn的顺序累加id
static final clientModeID = -1;
final Map<int, List<ChatMessage>> _messages = Map()..[clientModeID] = [];
final ChatUser me = ChatUser(
uid:"",
name: "me",
);
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final _scroller = ScrollController();
var _currentID = clientModeID;
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ScrollController get scroller => _scroller;
Map<int, List<ChatMessage>> get messages => _messages;
int get currentID => _currentID;
ChatUser get currentUser =>
FFI.serverModel.clients[_currentID]?.chatUser ?? me;
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changeCurrentID(int id){
if(_messages.containsKey(id)){
_currentID = id;
notifyListeners();
} else {
final chatUser = FFI.serverModel.clients[id]?.chatUser;
if(chatUser == null){
return debugPrint("Failed to changeCurrentID,remote user doesn't exist");
}
_messages[id] = [];
_currentID = id;
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}
}
receive(int id, String text) {
if (text.isEmpty) return;
// first message show overlay icon
if (iconOverlayEntry == null) {
showChatIconOverlay();
}
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late final chatUser;
if(id == clientModeID){
chatUser = ChatUser(
name: FFI.ffiModel.pi.username,
uid: FFI.getId(),
);
}else{
chatUser = FFI.serverModel.clients[id]?.chatUser;
}
if(chatUser == null){
return debugPrint("Failed to receive msg,user doesn't exist");
}
if(!_messages.containsKey(id)){
_messages[id] = [];
}
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_messages[id]!.add(ChatMessage(
text: text,
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user: chatUser));
_currentID = id;
notifyListeners();
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scrollToBottom();
}
scrollToBottom(){
Future.delayed(Duration(milliseconds: 500), () {
_scroller.animateTo(
_scroller.position.maxScrollExtent,
duration: Duration(milliseconds: 200),
curve: Curves.fastLinearToSlowEaseIn);
});
}
send(ChatMessage message) {
if (message.text != null && message.text!.isNotEmpty) {
_messages[_currentID]?.add(message);
if (_currentID == clientModeID) {
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FFI.setByName("chat_client_mode", message.text!);
} else {
final msg = Map()
..["id"] = _currentID
..["text"] = message.text!;
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FFI.setByName("chat_server_mode", jsonEncode(msg));
}
}
notifyListeners();
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scrollToBottom();
}
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close() {
hideChatIconOverlay();
hideChatWindowOverlay();
notifyListeners();
}
}