run open_channel in a WaitingDialog

electrum/gui/qt/channels_list.py

@@ -111,11 +111,4 @@ class ChannelsList(MyTreeWidget):
         local_amt = local_amt_inp.get_amount()
         push_amt = push_amt_inp.get_amount()
         connect_contents = str(remote_nodeid.text()).strip()
-        self.main_window.protect(self.open_channel, (connect_contents, local_amt, push_amt))
-
-    def open_channel(self, *args, **kwargs):
-        try:
-            self.parent.wallet.lnworker.open_channel(*args, **kwargs)
-        except Exception as e:
-            # don't use str(e) because str(asyncio.TimeoutError()) (and many others) is ''
-            self.parent.show_error('Cannot open channel: %s' % repr(e))
+        self.parent.open_channel(connect_contents, local_amt, push_amt)

electrum/gui/qt/main_window.py

@@ -1747,6 +1747,15 @@ class ElectrumWindow(QMainWindow, MessageBoxMixin, PrintError):
         WaitingDialog(self, _('Broadcasting transaction...'),
                       broadcast_thread, broadcast_done, self.on_error)
 
+    @protected
+    def open_channel(self, *args, **kwargs):
+        def task():
+            return self.wallet.lnworker.open_channel(*args, **kwargs)
+        def on_success(result):
+            print(result)
+            self.show_message(_('Channel open'))
+        WaitingDialog(self, _('Opening channel...'), task, on_success, self.on_error)
+
     def query_choice(self, msg, choices):
         # Needed by QtHandler for hardware wallets
         dialog = WindowModalDialog(self.top_level_window())

electrum/lnworker.py

@@ -214,7 +214,7 @@ class LNWorker(PrintError):
         # TODO maybe filter out onion if not on tor?
         return random.choice(addr_list)
 
-    def open_channel(self, connect_contents, local_amt_sat, push_amt_sat, pw, timeout=5):
+    def open_channel(self, connect_contents, local_amt_sat, push_amt_sat, password=None, timeout=5):
         node_id, rest = extract_nodeid(connect_contents)
         peer = self.peers.get(node_id)
         if not peer:
@@ -231,7 +231,7 @@ class LNWorker(PrintError):
             except socket.gaierror:
                 raise ConnStringFormatError(_('Hostname does not resolve (getaddrinfo failed)'))
             peer = self.add_peer(host, port, node_id)
-        coro = self._open_channel_coroutine(peer, local_amt_sat, push_amt_sat, None if pw == "" else pw)
+        coro = self._open_channel_coroutine(peer, local_amt_sat, push_amt_sat, password)
         f = asyncio.run_coroutine_threadsafe(coro, self.network.asyncio_loop)
         return f.result(timeout)