Reset scroll position after updating list

gui/qt/history_list.py

@@ -70,7 +70,6 @@ class HistoryList(MyTreeWidget, AcceptFileDragDrop):
 
     @profiler
     def on_update(self):
-        # TODO save and restore scroll position (maybe based on y coord or selected item?)
         self.wallet = self.parent.wallet
         h = self.wallet.get_history(self.get_domain())
         item = self.currentItem()
@@ -213,4 +212,5 @@ class HistoryList(MyTreeWidget, AcceptFileDragDrop):
                 self.parent.show_error(e)
             else:
                 self.wallet.save_transactions(write=True)
-                self.on_update()
+                # need to update at least: history_list, utxo_list, address_list
+                self.parent.need_update.set()

gui/qt/util.py

@@ -478,8 +478,12 @@ class MyTreeWidget(QTreeWidget):
             self.pending_update = True
         else:
             self.setUpdatesEnabled(False)
+            scroll_pos = self.verticalScrollBar().value()
             self.on_update()
             self.setUpdatesEnabled(True)
+            # To paint the list before resetting the scroll position
+            self.parent.app.processEvents()
+            self.verticalScrollBar().setValue(scroll_pos)
         if self.current_filter:
             self.filter(self.current_filter)