Update/refactor Chat components and banner

harmonyqml/backend/client.py

@@ -4,7 +4,7 @@
 import time
 from concurrent.futures import ThreadPoolExecutor
 from threading import Event
-from typing import Any, DefaultDict, Dict, Optional, Tuple
+from typing import DefaultDict, Tuple
 
 from PyQt5.QtCore import QObject, pyqtProperty, pyqtSignal, pyqtSlot
 
@@ -78,16 +78,6 @@ class Client(QObject):
         return self.nio.user_id
 
 
-    @pyqtSlot(str, result="QVariant")
-    @pyqtSlot(str, list, result="QVariant")
-    @pyqtSlot(str, list, "QVariantMap", result="QVariant")
-    def call(self,
-             method: str,
-             args:   Optional[list]           = None,
-             kwargs: Optional[Dict[str, Any]] = None) -> Any:
-        return getattr(self, method)(*args or [], **kwargs or {})
-
-
     @pyqtSlot(str, result="QVariant")
     @pyqtSlot(str, str, result="QVariant")
     @futurize()
@@ -246,19 +236,19 @@ class Client(QObject):
         return send(self)
 
 
-    @pyqtSlot(str)
+    @pyqtSlot(str, result="QVariant")
     @futurize()
     def joinRoom(self, room_id: str) -> None:
         return self.net.talk(self.nio.join, room_id=room_id)
 
 
-    @pyqtSlot(str)
+    @pyqtSlot(str, result="QVariant")
     @futurize()
     def leaveRoom(self, room_id: str) -> None:
         return self.net.talk(self.nio.room_leave, room_id=room_id)
 
 
-    @pyqtSlot(str)
+    @pyqtSlot(str, result="QVariant")
     @futurize()
     def forgetRoom(self, room_id: str) -> None:
         self.roomAboutToBeForgotten.emit(room_id)