config: force 'history_rates' config var to bool

fixes https://github.com/spesmilo/electrum/issues/8367

probably regression from 503776c0de
(note that before that commit, we were casting to bool)

electrum/exchange_rate.py

@@ -592,8 +592,8 @@ class FxThread(ThreadJob, EventListener):
     def can_have_history(self):
         return self.is_enabled() and self.ccy in self.exchange.history_ccys()
 
-    def has_history(self):
+    def has_history(self) -> bool:
-        return self.can_have_history() and self.config.get('history_rates', False)
+        return self.can_have_history() and bool(self.config.get('history_rates', False))
 
     def get_currency(self) -> str:
         '''Use when dynamic fetching is needed'''

electrum/gui/qml/qefx.py

@@ -63,7 +63,7 @@ class QEFX(QObject, QtEventListener):
     historicRatesChanged = pyqtSignal()
     @pyqtProperty(bool, notify=historicRatesChanged)
     def historicRates(self):
-        return self.fx.config.get('history_rates', True)
+        return bool(self.fx.config.get('history_rates', True))
 
     @historicRates.setter
     def historicRates(self, checked):

electrum/gui/qt/history_list.py

@@ -252,7 +252,7 @@ class HistoryModel(CustomModel, Logger):
         return True
 
     def should_show_fiat(self):
-        if not self.window.config.get('history_rates', False):
+        if not bool(self.window.config.get('history_rates', False)):
             return False
         fx = self.window.fx
         if not fx or not fx.is_enabled():

electrum/gui/qt/my_treeview.py

@@ -83,7 +83,7 @@ class MyMenu(QMenu):
         b = self.config.get(name, default)
         m = self.addAction(text, lambda: self._do_toggle_config(name, default, callback))
         m.setCheckable(True)
-        m.setChecked(b)
+        m.setChecked(bool(b))
         m.setToolTip(tooltip)
         return m
 

electrum/gui/qt/settings_dialog.py

@@ -307,7 +307,7 @@ class SettingsDialog(QDialog, QtEventListener):
         def update_currencies():
             if not self.fx:
                 return
-            h = self.config.get('history_rates', False)
+            h = bool(self.config.get('history_rates', False))
             currencies = sorted(self.fx.get_currencies(h))
             ccy_combo.clear()
             ccy_combo.addItems([_('None')] + currencies)
@@ -319,7 +319,7 @@ class SettingsDialog(QDialog, QtEventListener):
             b = self.fx.is_enabled()
             ex_combo.setEnabled(b)
             if b:
-                h = self.config.get('history_rates', False)
+                h = bool(self.config.get('history_rates', False))
                 c = self.fx.get_currency()
                 exchanges = self.fx.get_exchanges_by_ccy(c, h)
             else:
@@ -356,7 +356,7 @@ class SettingsDialog(QDialog, QtEventListener):
         update_currencies()
         update_exchanges()
         ccy_combo.currentIndexChanged.connect(on_currency)
-        self.history_rates_cb.setChecked(self.config.get('history_rates', False))
+        self.history_rates_cb.setChecked(bool(self.config.get('history_rates', False)))
         self.history_rates_cb.stateChanged.connect(on_history_rates)
         ex_combo.currentIndexChanged.connect(on_exchange)