move history export from HistoryList to Abstract_Wallet

diff --git a/electrum/gui/qt/history_list.py b/electrum/gui/qt/history_list.py
index 8b956c5..366a27c 100644
--- a/electrum/gui/qt/history_list.py
+++ b/electrum/gui/qt/history_list.py
@@ -27,7 +27,7 @@ import os
 import time
 import datetime
 from datetime import date
-from typing import TYPE_CHECKING, Tuple, Dict, Any, Optional
+from typing import TYPE_CHECKING, Tuple, Dict, Any
 import threading
 import enum
 from decimal import Decimal
@@ -43,7 +43,7 @@ from electrum.address_synchronizer import TX_HEIGHT_LOCAL
 from electrum.i18n import _
 from electrum.util import (block_explorer_URL, profiler, TxMinedInfo,
                            OrderedDictWithIndex, timestamp_to_datetime,
-                           Satoshis, format_time, Fiat)
+                           Satoshis, format_time)
 from electrum.logging import get_logger, Logger
 from electrum.simple_config import SimpleConfig
 
@@ -55,7 +55,6 @@ from .my_treeview import MyTreeView
 
 if TYPE_CHECKING:
     from electrum.wallet import Abstract_Wallet
-    from electrum.exchange_rate import FxThread
     from .main_window import ElectrumWindow
 
 
@@ -845,8 +844,7 @@ class HistoryList(MyTreeView, AcceptFileDragDrop):
         if not filename:
             return
         try:
-            self.do_export_history(
-                self.wallet,
+            self.wallet.export_history_to_file(
                 self.main_window.fx if self.hm.should_show_fiat() else None,
                 filename,
                 csv_button.isChecked(),
@@ -857,78 +855,6 @@ class HistoryList(MyTreeView, AcceptFileDragDrop):
             return
         self.main_window.show_message(_("Your wallet history has been successfully exported."))
 
-    @staticmethod
-    def do_export_history(wallet: 'Abstract_Wallet', fx: Optional['FxThread'], file_path: str, is_csv: bool):
-        txns = wallet.get_full_history(fx=fx)
-        lines = []
-
-        def get_all_fees_paid_by_item(h_item: dict) -> Tuple[int, Optional[Fiat]]:
-            # gets all fees paid in an item (or group), as the outer group doesn't contain the
-            # transaction fees paid by the children
-            fees_sat = 0
-            fees_fiat = Fiat(ccy=fx.ccy, value=Decimal()) if fx else None
-            for child in h_item.get('children', []):
-                fees_sat += child['fee_sat'] or 0 if 'fee_sat' in child \
-                                else (child.get('fee_msat', 0) or 0) // 1000  # FIXME: loses msat precision
-                if fees_fiat is not None and (child_fiat_fee := child.get('fiat_fee')):
-                    fees_fiat += child_fiat_fee
-
-            fees_sat += h_item['fee_sat'] or 0 if 'fee_sat' in h_item \
-                            else (h_item.get('fee_msat', 0) or 0) // 1000  # FIXME: loses msat precision
-            if fees_fiat is not None and (h_item_fiat_fee := h_item.get('fiat_fee')):
-                fees_fiat += h_item_fiat_fee
-
-            fiat_value = h_item.get('fiat_value')
-            if fees_fiat is not None and isinstance(fiat_value, Fiat) \
-                    and (fiat_value.value is None or fiat_value.value.is_nan()):
-                # ensure that str(fees_fiat) == 'No Data' if str(fiat_value) == 'No Data'
-                fees_fiat = Fiat(ccy=fx.ccy, value=None)
-
-            return fees_sat, fees_fiat
-
-        if is_csv:
-            # sort by timestamp so the generated csv is more understandable on first sight
-            txns = dict(sorted(txns.items(), key=lambda h_item: h_item[1]['timestamp'] or 0))
-            for item in txns.values():
-                # tx groups will are shown as single element
-                fees_sat, fees_fiat = get_all_fees_paid_by_item(item)
-                # users are sensitive to changes of these fields as they have scripts/spreadsheets
-                # depending on them. E.g. https://github.com/spesmilo/electrum/issues/10445
-                assert str(fees_fiat) == 'No Data' if str(item.get('fiat_value')) == 'No Data' else True
-                line = [
-                    item.get('txid', ''),
-                    item.get('payment_hash', ''),
-                    item.get('label', ''),
-                    item.get('confirmations', ''),
-                    item['bc_value'],
-                    item['ln_value'],
-                    item.get('fiat_value', ''),
-                    fees_sat,
-                    str(fees_fiat or ''),
-                    item['date']
-                ]
-                lines.append(line)
-
-        with open(file_path, "w+", encoding='utf-8') as f:
-            if is_csv:
-                import csv
-                transaction = csv.writer(f, lineterminator='\n')
-                transaction.writerow(["oc_transaction_hash",
-                                      "ln_payment_hash",
-                                      "label",
-                                      "confirmations",
-                                      "amount_chain_bc",
-                                      "amount_lightning_bc",
-                                      "fiat_value",
-                                      "network_fee_satoshi",
-                                      "fiat_fee",
-                                      "timestamp"])
-                for line in lines:
-                    transaction.writerow(line)
-            else:
-                from electrum.util import json_encode
-                f.write(json_encode(txns))
-
     def get_text_from_coordinate(self, row, col):
         return self.get_role_data_from_coordinate(row, col, role=Qt.ItemDataRole.DisplayRole)
 
diff --git a/electrum/wallet.py b/electrum/wallet.py
index 247dfa9..aea8a5c 100644
--- a/electrum/wallet.py
+++ b/electrum/wallet.py
@@ -3614,6 +3614,76 @@ class Abstract_Wallet(ABC, Logger, EventListener):
         util.trigger_callback('wallet_updated', self)
         self.adb.set_future_tx(tx.txid(), wanted_height=wanted_height)
 
+    def export_history_to_file(self, fx: Optional['FxThread'], file_path: str, is_csv: bool):
+        txns = self.get_full_history(fx=fx)
+        lines = []
+
+        def get_all_fees_paid_by_item(h_item: dict) -> Tuple[int, Optional[Fiat]]:
+            # gets all fees paid in an item (or group), as the outer group doesn't contain the
+            # transaction fees paid by the children
+            fees_sat = 0
+            fees_fiat = Fiat(ccy=fx.ccy, value=Decimal()) if fx else None
+            for child in h_item.get('children', []):
+                fees_sat += child['fee_sat'] or 0 if 'fee_sat' in child \
+                    else (child.get('fee_msat', 0) or 0) // 1000  # FIXME: loses msat precision
+                if fees_fiat is not None and (child_fiat_fee := child.get('fiat_fee')):
+                    fees_fiat += child_fiat_fee
+
+            fees_sat += h_item['fee_sat'] or 0 if 'fee_sat' in h_item \
+                else (h_item.get('fee_msat', 0) or 0) // 1000  # FIXME: loses msat precision
+            if fees_fiat is not None and (h_item_fiat_fee := h_item.get('fiat_fee')):
+                fees_fiat += h_item_fiat_fee
+
+            fiat_value = h_item.get('fiat_value')
+            if fees_fiat is not None and isinstance(fiat_value, Fiat) \
+                    and (fiat_value.value is None or fiat_value.value.is_nan()):
+                # ensure that str(fees_fiat) == 'No Data' if str(fiat_value) == 'No Data'
+                fees_fiat = Fiat(ccy=fx.ccy, value=None)
+
+            return fees_sat, fees_fiat
+
+        if is_csv:
+            # sort by timestamp so the generated csv is more understandable on first sight
+            txns = dict(sorted(txns.items(), key=lambda h_item: h_item[1]['timestamp'] or 0))
+            for item in txns.values():
+                # tx groups will are shown as single element
+                fees_sat, fees_fiat = get_all_fees_paid_by_item(item)
+                # users are sensitive to changes of these fields as they have scripts/spreadsheets
+                # depending on them. E.g. https://github.com/spesmilo/electrum/issues/10445
+                assert str(fees_fiat) == 'No Data' if str(item.get('fiat_value')) == 'No Data' else True
+                line = [
+                    item.get('txid', ''),
+                    item.get('payment_hash', ''),
+                    item.get('label', ''),
+                    item.get('confirmations', ''),
+                    item['bc_value'],
+                    item['ln_value'],
+                    item.get('fiat_value', ''),
+                    fees_sat,
+                    str(fees_fiat or ''),
+                    item['date']
+                ]
+                lines.append(line)
+
+        with open(file_path, "w+", encoding='utf-8') as f:
+            if is_csv:
+                import csv
+                transaction = csv.writer(f, lineterminator='\n')
+                transaction.writerow(["oc_transaction_hash",
+                                      "ln_payment_hash",
+                                      "label",
+                                      "confirmations",
+                                      "amount_chain_bc",
+                                      "amount_lightning_bc",
+                                      "fiat_value",
+                                      "network_fee_satoshi",
+                                      "fiat_fee",
+                                      "timestamp"])
+                for line in lines:
+                    transaction.writerow(line)
+            else:
+                f.write(util.json_encode(txns))
+
 
 class Simple_Wallet(Abstract_Wallet):
     # wallet with a single keystore