try to fix "--offline" mode

electrum/gui/qt/__init__.py

@@ -157,9 +157,9 @@ class ElectrumGui(Logger):
             m.clear()
         network = self.daemon.network
         m.addAction(_("Network"), self.show_network_dialog)
-        if network.lngossip:
+        if network and network.lngossip:
             m.addAction(_("Lightning Network"), self.show_lightning_dialog)
-        if network.local_watchtower:
+        if network and network.local_watchtower:
             m.addAction(_("Local Watchtower"), self.show_watchtower_dialog)
         for window in self.windows:
             name = window.wallet.basename()

electrum/gui/qt/channels_list.py

@@ -127,9 +127,12 @@ class ChannelsList(MyTreeView):
     def do_update_rows(self, wallet):
         if wallet != self.parent.wallet:
             return
+        lnworker = self.parent.wallet.lnworker
+        if not lnworker:
+            return
         self.model().clear()
         self.update_headers(self.headers)
-        for chan in self.parent.wallet.lnworker.channels.values():
+        for chan in lnworker.channels.values():
             items = [QtGui.QStandardItem(x) for x in self.format_fields(chan)]
             self.set_editability(items)
             items[self.Columns.NODE_ID].setData(chan.channel_id, ROLE_CHANNEL_ID)

electrum/gui/qt/lightning_dialog.py

@@ -42,6 +42,7 @@ class LightningDialog(QDialog):
         self.gui_object = gui_object
         self.config = gui_object.config
         self.network = gui_object.daemon.network
+        assert self.network
         self.setWindowTitle(_('Lightning Network'))
         self.setMinimumSize(600, 20)
         vbox = QVBoxLayout(self)

electrum/gui/qt/main_window.py

@@ -435,7 +435,7 @@ class ElectrumWindow(QMainWindow, MessageBoxMixin, Logger):
     def load_wallet(self, wallet):
         wallet.thread = TaskThread(self, self.on_error)
         self.update_recently_visited(wallet.storage.path)
-        if wallet.lnworker:
+        if wallet.lnworker and wallet.network:
             wallet.network.trigger_callback('channels_updated', wallet)
         self.need_update.set()
         # Once GUI has been initialized check if we want to announce something since the callback has been called before the GUI was initialized
@@ -642,7 +642,7 @@ class ElectrumWindow(QMainWindow, MessageBoxMixin, Logger):
         tools_menu.addAction(_("Electrum preferences") if sys.platform == 'darwin' else _("Preferences"), self.settings_dialog)
         if self.network:
             tools_menu.addAction(_("&Network"), self.gui_object.show_network_dialog)
-        if self.wallet.has_lightning():
+        if self.wallet.has_lightning() and self.network:
             tools_menu.addAction(_("&Lightning"), self.gui_object.show_lightning_dialog)
             tools_menu.addAction(_("&Watchtower"), self.gui_object.show_watchtower_dialog)
         tools_menu.addAction(_("&Plugins"), self.plugins_dialog)
@@ -889,7 +889,8 @@ class ElectrumWindow(QMainWindow, MessageBoxMixin, Logger):
 
         self.tray.setToolTip("%s (%s)" % (text, self.wallet.basename()))
         self.balance_label.setText(text)
-        self.status_button.setIcon( icon )
+        if self.status_button:
+            self.status_button.setIcon( icon )
 
     def update_wallet(self):
         self.update_status()
@@ -907,6 +908,7 @@ class ElectrumWindow(QMainWindow, MessageBoxMixin, Logger):
         self.utxo_list.update()
         self.contact_list.update()
         self.invoice_list.update()
+        self.channels_list.update_rows.emit(wallet)
         self.update_completions()
 
     def create_channels_tab(self, wallet):
@@ -2027,12 +2029,13 @@ class ElectrumWindow(QMainWindow, MessageBoxMixin, Logger):
         sb.addPermanentWidget(StatusBarButton(read_QIcon("preferences.png"), _("Preferences"), self.settings_dialog ) )
         self.seed_button = StatusBarButton(read_QIcon("seed.png"), _("Seed"), self.show_seed_dialog )
         sb.addPermanentWidget(self.seed_button)
-        if self.wallet.has_lightning():
+        if self.wallet.has_lightning() and self.network:
             self.lightning_button = StatusBarButton(read_QIcon("lightning.png"), _("Lightning Network"), self.gui_object.show_lightning_dialog)
             sb.addPermanentWidget(self.lightning_button)
+        self.status_button = None
         if self.network:
             self.status_button = StatusBarButton(read_QIcon("status_disconnected.png"), _("Network"), self.gui_object.show_network_dialog)
-        sb.addPermanentWidget(self.status_button)
+            sb.addPermanentWidget(self.status_button)
         run_hook('create_status_bar', sb)
         self.setStatusBar(sb)
 

electrum/gui/qt/watchtower_dialog.py

@@ -62,6 +62,7 @@ class WatchtowerDialog(QDialog):
         self.gui_object = gui_object
         self.config = gui_object.config
         self.network = gui_object.daemon.network
+        assert self.network
         self.lnwatcher = self.network.local_watchtower
         self.setWindowTitle(_('Watchtower'))
         self.setMinimumSize(600, 20)

electrum/lnworker.py

@@ -186,6 +186,7 @@ class LNWorker(Logger):
         return sum([p.initialized.is_set() for p in self.peers.values()])
 
     def start_network(self, network: 'Network'):
+        assert network
         self.network = network
         self.config = network.config
         daemon = network.daemon
@@ -306,6 +307,7 @@ class LNGossip(LNWorker):
         assert is_using_fast_ecc(), "verifying LN gossip msgs without libsecp256k1 is hopeless"
 
     def start_network(self, network: 'Network'):
+        assert network
         super().start_network(network)
         asyncio.run_coroutine_threadsafe(network.daemon.taskgroup.spawn(self.maintain_db()), self.network.asyncio_loop)
 
@@ -407,6 +409,7 @@ class LNWallet(LNWorker):
                 await watchtower.add_sweep_tx(outpoint, ctn, tx.inputs()[0].prevout.to_str(), tx.serialize())
 
     def start_network(self, network: 'Network'):
+        assert network
         self.lnwatcher = LNWatcher(network)
         self.lnwatcher.start_network(network)
         self.network = network
@@ -731,6 +734,8 @@ class LNWallet(LNWorker):
             name = sweep_info.name
             spender_txid = spenders.get(prevout)
             if spender_txid is not None:
+                # TODO handle exceptions for network.get_transaction
+                # TODO don't do network request every time... save tx at least in memory, or maybe wallet file?
                 spender_tx = await self.network.get_transaction(spender_txid)
                 spender_tx = Transaction(spender_tx)
                 e_htlc_tx = chan.sweep_htlc(closing_tx, spender_tx)

electrum/wallet.py

@@ -307,7 +307,7 @@ class Abstract_Wallet(AddressSynchronizer, ABC):
 
     def start_network(self, network):
         AddressSynchronizer.start_network(self, network)
-        if self.lnworker:
+        if self.lnworker and network:
             network.maybe_init_lightning()
             self.lnworker.start_network(network)