qt coins tab: label(utxo) to consider both label(txid) and label(addr)

related: #6644

electrum/gui/qt/transaction_dialog.py

@@ -419,7 +419,7 @@ class BaseTxDialog(QDialog, MessageBoxMixin):
             # note: when not finalized, RBF and locktime changes do not trigger
             #       a make_tx, so the txid is unreliable, hence:
             self.tx_hash_e.setText(_('Unknown'))
-        if desc is None:
+        if not desc:
             self.tx_desc.hide()
         else:
             self.tx_desc.setText(_("Description") + ': ' + desc)

electrum/gui/qt/util.py

@@ -608,6 +608,7 @@ class MyTreeView(QTreeView):
     def on_edited(self, idx: QModelIndex, user_role, text):
         self.parent.wallet.set_label(user_role, text)
         self.parent.history_model.refresh('on_edited in MyTreeView')
+        self.parent.utxo_list.update()
         self.parent.update_completions()
 
     def should_hide(self, row):

electrum/gui/qt/utxo_list.py

@@ -98,7 +98,7 @@ class UTXOList(MyTreeView):
         name = utxo.prevout.to_str()
         name_short = utxo.prevout.txid.hex()[:16] + '...' + ":%d" % utxo.prevout.out_idx
         self._utxo_dict[name] = utxo
-        label = self.wallet.get_label_for_txid(utxo.prevout.txid.hex())
+        label = self.wallet.get_label_for_txid(utxo.prevout.txid.hex()) or self.wallet.get_label(address)
         amount = self.parent.format_amount(utxo.value_sats(), whitespaces=True)
         labels = [name_short, address, label, amount, '%d'%height]
         utxo_item = [QStandardItem(x) for x in labels]
@@ -178,7 +178,7 @@ class UTXOList(MyTreeView):
             # "Details"
             tx = self.wallet.db.get_transaction(txid)
             if tx:
-                label = self.wallet.get_label_for_txid(txid) or None # Prefer None if empty (None hides the Description: field in the window)
+                label = self.wallet.get_label_for_txid(txid)
                 menu.addAction(_("Details"), lambda: self.parent.show_transaction(tx, tx_desc=label))
             # "Copy ..."
             idx = self.indexAt(position)