exchange_rate: FxThread does not need network

electrum/commands.py

@@ -771,7 +771,7 @@ class Commands:
             kwargs['to_timestamp'] = time.mktime(end_date.timetuple())
         if show_fiat:
             from .exchange_rate import FxThread
-            fx = FxThread(self.config, None)
+            fx = FxThread(config=self.config)
             kwargs['fx'] = fx
 
         return json_normalize(wallet.get_detailed_history(**kwargs))

electrum/daemon.py

@@ -395,7 +395,7 @@ class Daemon(Logger):
         self.network = None
         if not config.get('offline'):
             self.network = Network(config, daemon=self)
-        self.fx = FxThread(config, self.network)
+        self.fx = FxThread(config=config)
         self.gui_object = None
         # path -> wallet;   make sure path is standardized.
         self._wallets = {}  # type: Dict[str, Abstract_Wallet]

electrum/exchange_rate.py

@@ -519,10 +519,9 @@ def get_exchanges_by_ccy(history=True):
 
 class FxThread(ThreadJob, EventListener):
 
-    def __init__(self, config: SimpleConfig, network: Optional[Network]):
+    def __init__(self, *, config: SimpleConfig):
         ThreadJob.__init__(self)
         self.config = config
-        self.network = network
         self.register_callbacks()
         self.ccy = self.get_currency()
         self.history_used_spot = False
@@ -610,8 +609,8 @@ class FxThread(ThreadJob, EventListener):
         self.on_quotes()
 
     def trigger_update(self):
-        if self.network:
-            self.network.asyncio_loop.call_soon_threadsafe(self._trigger.set)
+        loop = util.get_asyncio_loop()
+        loop.call_soon_threadsafe(self._trigger.set)
 
     def set_exchange(self, name):
         class_ = globals().get(name) or globals().get(DEFAULT_EXCHANGE)