wallet.get_full_history: rm "include_fiat" arg, infer it from fx

ref https://github.com/spesmilo/electrum/pull/10209#discussion_r2334228490

electrum/gui/qml/qetransactionlistmodel.py

@@ -214,7 +214,6 @@ class QETransactionListModel(QAbstractListModel, QtEventListener):
         history = self.wallet.get_full_history(
             onchain_domain=self.onchain_domain,
             include_lightning=self.include_lightning,
-            include_fiat=False,
         )
         txs = []
         for key, tx in history.items():

electrum/gui/qt/history_list.py

@@ -298,10 +298,9 @@ class HistoryModel(CustomModel, Logger):
         wallet = self.window.wallet
         self.set_visibility_of_columns()
         transactions = wallet.get_full_history(
-            self.window.fx,
+            fx=self.window.fx if self.should_show_fiat() else None,
             onchain_domain=self.get_domain(),
             include_lightning=self.should_include_lightning_payments(),
-            include_fiat=self.should_show_fiat(),
         )
         old_length = self._root.childCount()
         if old_length != 0:
@@ -853,7 +852,7 @@ class HistoryList(MyTreeView, AcceptFileDragDrop):
         self.main_window.show_message(_("Your wallet history has been successfully exported."))
 
     def do_export_history(self, file_name, is_csv):
-        txns = self.wallet.get_full_history(fx=self.main_window.fx, include_fiat=self.main_window.fx.is_enabled())
+        txns = self.wallet.get_full_history(fx=self.main_window.fx if self.hm.should_show_fiat() else None)
         lines = []
 
         def get_all_fees_paid_by_item(h_item: dict) -> Tuple[int, Fiat]:

electrum/wallet.py

@@ -1427,16 +1427,16 @@ class Abstract_Wallet(ABC, Logger, EventListener):
     @profiler
     def get_full_history(
             self,
-            fx=None,
             *,
+            fx: 'FxThread' = None,  # used for fiat values if set
             onchain_domain=None,
             include_lightning=True,
-            include_fiat=False
     ) -> OrderedDictWithIndex:
         """
         includes both onchain and lightning
         includes grouping information
         """
+        include_fiat = fx is not None and fx.has_history()
         transactions_tmp = OrderedDictWithIndex()
         # add on-chain txns
         onchain_history = self.get_onchain_history(domain=onchain_domain)
@@ -1476,7 +1476,6 @@ class Abstract_Wallet(ABC, Logger, EventListener):
                 if parent is None:
                     parent = {
                         'label': group_label,
-                        'fiat_value': Fiat(Decimal(0), fx.ccy) if fx else None,
                         'bc_value': Satoshis(0),
                         'ln_value': Satoshis(0),
                         'value': Satoshis(0),
@@ -1489,6 +1488,8 @@ class Abstract_Wallet(ABC, Logger, EventListener):
                         'confirmations': 0,
                         'txid': '----',
                     }
+                    if include_fiat:
+                        parent['fiat_value'] = Fiat(Decimal(0), fx.ccy)
                     transactions[key] = parent
                 parent['bc_value'] += tx_item['bc_value']
                 parent['ln_value'] += tx_item['ln_value']