qt tabs: restore filter state after refresh

electrum/gui/qt/address_list.py

@@ -173,6 +173,7 @@ class AddressList(MyTreeView):
             self.showColumn(self.Columns.FIAT_BALANCE)
         else:
             self.hideColumn(self.Columns.FIAT_BALANCE)
+        self.filter()
 
     def create_menu(self, position):
         from electrum.wallet import Multisig_Wallet

electrum/gui/qt/contact_list.py

@@ -121,4 +121,5 @@ class ContactList(MyTreeView):
         self.set_current_idx(set_current)
         # FIXME refresh loses sort order; so set "default" here:
         self.sortByColumn(self.Columns.NAME, Qt.AscendingOrder)
+        self.filter()
         run_hook('update_contacts_tab', self)

electrum/gui/qt/history_list.py

@@ -249,9 +249,7 @@ class HistoryModel(QAbstractItemModel, PrintError):
         self.endInsertRows()
         if selected_row:
             self.view.selectionModel().select(self.createIndex(selected_row, 0), QItemSelectionModel.Rows | QItemSelectionModel.SelectCurrent)
-        f = self.view.current_filter
+        self.view.filter()
-        if f:
-            self.view.filter(f)
         # update summary
         self.summary = r['summary']
         if not self.view.years and self.transactions:

electrum/gui/qt/invoice_list.py

@@ -89,6 +89,7 @@ class InvoiceList(MyTreeView):
             b = len(inv_list) > 0
             self.setVisible(b)
             self.parent.invoices_label.setVisible(b)
+        self.filter()
 
     def import_invoices(self):
         import_meta_gui(self.parent, _('invoices'), self.parent.invoices.import_file, self.update)

electrum/gui/qt/request_list.py

@@ -135,6 +135,7 @@ class RequestList(MyTreeView):
                 items[self.Columns.STATUS].setIcon(read_QIcon(pr_icons.get(status)))
             items[self.Columns.DESCRIPTION].setData(address, Qt.UserRole)
             self.model().insertRow(self.model().rowCount(), items)
+        self.filter()
 
     def create_menu(self, position):
         idx = self.indexAt(position)

electrum/gui/qt/util.py

@@ -547,9 +547,10 @@ class MyTreeView(QTreeView):
             # we did not find the filter in any columns, hide the item
             self.setRowHidden(row_num, QModelIndex(), True)
 
-    def filter(self, p):
+    def filter(self, p=None):
-        p = p.lower()
+        if p is not None:
-        self.current_filter = p
+            p = p.lower()
+            self.current_filter = p
         self.hide_rows()
 
     def hide_rows(self):

electrum/gui/qt/utxo_list.py

@@ -69,6 +69,7 @@ class UTXOList(MyTreeView):
         self.update_headers(self.__class__.headers)
         for idx, x in enumerate(utxos):
             self.insert_utxo(idx, x)
+        self.filter()
 
     def insert_utxo(self, idx, x):
         address = x['address']