add watchtower_window

electrum/gui/qt/__init__.py

@@ -111,6 +111,7 @@ class ElectrumGui(Logger):
         self.timer.setInterval(500)  # msec
 
         self.nd = None
+        self.watchtower_window = None
         self.network_updated_signal_obj = QNetworkUpdatedSignalObject()
         self._num_wizards_in_progress = 0
         self._num_wizards_lock = threading.Lock()
@@ -149,8 +150,12 @@ class ElectrumGui(Logger):
         else:
             m = self.tray.contextMenu()
             m.clear()
+        if self.watchtower_window:
+            submenu = m.addMenu(_("watchtower"))
+            submenu.addAction(_("Show/Hide"), self.watchtower_window.show_or_hide)
         for window in self.windows:
-            submenu = m.addMenu(window.wallet.basename())
+            name = window.wallet.basename()
+            submenu = m.addMenu(name)
             submenu.addAction(_("Show/Hide"), window.show_or_hide)
             submenu.addAction(_("Close"), window.close)
         m.addAction(_("Dark/Light"), self.toggle_tray_icon)
@@ -180,11 +185,20 @@ class ElectrumGui(Logger):
     def close(self):
         for window in self.windows:
             window.close()
+        if self.watchtower_window:
+            self.watchtower_window.close()
 
     def new_window(self, path, uri=None):
         # Use a signal as can be called from daemon thread
         self.app.new_window_signal.emit(path, uri)
 
+    def create_watchtower_window(self):
+        from .watchtower_window import WatchTowerWindow
+        self.watchtower_window = WatchTowerWindow(self)
+
+    def show_watchtower_dialog(self, parent):
+        self.watchtower_window.bring_to_top()
+
     def show_network_dialog(self, parent):
         if not self.daemon.network:
             parent.show_warning(_('You are using Electrum in offline mode; restart Electrum if you want to get connected'), title=_('Offline'))
@@ -326,6 +340,9 @@ class ElectrumGui(Logger):
             self.logger.exception('')
             return
         self.timer.start()
+        # todo: create this only if channels need it
+        self.create_watchtower_window()
+
         self.config.open_last_wallet()
         path = self.config.get_wallet_path()
         if not self.start_new_window(path, self.config.get('url'), app_is_starting=True):
@@ -338,7 +355,7 @@ class ElectrumGui(Logger):
                 return
             # check if a wizard is in progress
             with self._num_wizards_lock:
-                if self._num_wizards_in_progress > 0 or len(self.windows) > 0:
+                if self._num_wizards_in_progress > 0 or len(self.windows) > 0 or self.watchtower_window:
                     return
             self.app.quit()
         self.app.setQuitOnLastWindowClosed(False)  # so _we_ can decide whether to quit

electrum/gui/qt/channels_list.py

@@ -9,7 +9,7 @@ from electrum.i18n import _
 from electrum.lnchan import Channel
 from electrum.lnutil import LOCAL, REMOTE, ConnStringFormatError
 
-from .util import MyTreeView, WindowModalDialog, Buttons, OkButton, CancelButton, EnterButton
+from .util import MyTreeView, WindowModalDialog, Buttons, OkButton, CancelButton, EnterButton, WWLabel
 from .amountedit import BTCAmountEdit
 from .channel_details import ChannelDetailsDialog
 
@@ -100,7 +100,6 @@ class ChannelsList(MyTreeView):
         h = QHBoxLayout()
         h.addWidget(self.status)
         h.addStretch()
-        h.addWidget(EnterButton(_('Statistics'), self.statistics_dialog))
         h.addWidget(EnterButton(_('Open Channel'), self.new_channel_dialog))
         return h
 

electrum/gui/qt/main_window.py

@@ -627,6 +627,7 @@ class ElectrumWindow(QMainWindow, MessageBoxMixin, Logger):
         # Settings / Preferences are all reserved keywords in macOS using this as work around
         tools_menu.addAction(_("Electrum preferences") if sys.platform == 'darwin' else _("Preferences"), self.settings_dialog)
         tools_menu.addAction(_("&Network"), lambda: self.gui_object.show_network_dialog(self))
+        tools_menu.addAction(_("&Watchtower"), lambda: self.gui_object.show_watchtower_dialog(self))
         tools_menu.addAction(_("&Plugins"), self.plugins_dialog)
         tools_menu.addSeparator()
         tools_menu.addAction(_("&Sign/verify message"), self.sign_verify_message)

electrum/gui/qt/watchtower_window.py

@@ -0,0 +1,94 @@
+#!/usr/bin/env python
+#
+# Electrum - lightweight Bitcoin client
+# Copyright (C) 2012 thomasv@gitorious
+#
+# Permission is hereby granted, free of charge, to any person
+# obtaining a copy of this software and associated documentation files
+# (the "Software"), to deal in the Software without restriction,
+# including without limitation the rights to use, copy, modify, merge,
+# publish, distribute, sublicense, and/or sell copies of the Software,
+# and to permit persons to whom the Software is furnished to do so,
+# subject to the following conditions:
+#
+# The above copyright notice and this permission notice shall be
+# included in all copies or substantial portions of the Software.
+#
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+# BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+# ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+# CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+# SOFTWARE.
+
+import socket
+
+from PyQt5.QtGui import *
+from PyQt5.QtCore import *
+from PyQt5.QtWidgets import *
+import PyQt5.QtCore as QtCore
+
+from electrum.i18n import _
+from .util import *
+
+help_wt = _("""A watchtower is a process that monitors your channels while you are offline, and prevents the other party from stealing funds in the channel.""")
+help_local = _("""Electrum runs a watchtower on your computer. This process will persist after you close your wallet. It will not persist if you exit Electrum from the tray menu""")
+help_remote = _("""To run a remote watchtower, start an electrum daemon on a computer that is always connected to the Internet, and set 'watchtower_host' and 'watchtower_port' in its config""")
+
+class WatchTowerWindow(QDialog):
+
+    def __init__(self, gui_object):
+        QDialog.__init__(self)
+        self.gui_object = gui_object
+        self.lnwatcher = gui_object.daemon.network.lnwatcher
+        self.wallet = self.lnwatcher
+        self.config = gui_object.config
+        self.setWindowTitle(_('Watchtower'))
+        self.setMinimumSize(600, 20)
+        vbox = QVBoxLayout(self)
+        watchtower_url = self.config.get('watchtower_url')
+        self.watchtower_e = QLineEdit(watchtower_url)
+        self.channel_list = QTreeWidget(self)
+        self.channel_list.setHeaderLabels([_('Node ID'), _('Amount')])
+
+        vbox.addWidget(WWLabel(help_wt))
+        vbox.addStretch(1)
+        vbox.addWidget(HelpLabel(_('Local Watchtower') + ':', help_local))
+        vbox.addWidget(self.channel_list)
+        vbox.addStretch(1)        
+        g = QGridLayout()
+        g.addWidget(HelpLabel(_('Remote Watchtower') + ':', help_remote), 1, 0)
+        g.addWidget(self.watchtower_e, 1, 1)
+        vbox.addLayout(g)
+        vbox.addStretch(1)
+        b = QPushButton(_('Close'))
+        b.clicked.connect(self.on_close)
+        vbox.addLayout(Buttons(b))
+        
+    def update(self):
+        pass
+
+    def on_close(self):
+        url = self.watchtower_e.text()
+        if url:
+            self.lnwatcher.set_remote_watchtower()
+        self.hide()
+
+    def is_hidden(self):
+        return self.isMinimized() or self.isHidden()
+
+    def show_or_hide(self):
+        if self.is_hidden():
+            self.bring_to_top()
+        else:
+            self.hide()
+
+    def bring_to_top(self):
+        self.show()
+        self.raise_()
+
+    def closeEvent(self, event):
+        self.gui_object.watchtower_window = None
+        event.accept()

electrum/lnwatcher.py

@@ -58,14 +58,16 @@ class LNWatcher(AddressSynchronizer):
 
         self.network.register_callback(self.on_network_update,
                                        ['network_updated', 'blockchain_updated', 'verified', 'wallet_updated'])
-        # remote watchtower
+        self.set_remote_watchtower()
-        watchtower_url = self.config.get('watchtower_url')
-        self.watchtower = jsonrpclib.Server(watchtower_url) if watchtower_url else None
-        self.watchtower_queue = asyncio.Queue()
         # this maps funding_outpoints to ListenerItems, which have an event for when the watcher is done,
         # and a queue for seeing which txs are being published
         self.tx_progress = {} # type: Dict[str, ListenerItem]
 
+    def set_remote_watchtower(self):
+        watchtower_url = self.config.get('watchtower_url')
+        self.watchtower = jsonrpclib.Server(watchtower_url) if watchtower_url else None
+        self.watchtower_queue = asyncio.Queue()
+
     def with_watchtower(func):
         def wrapper(self, *args, **kwargs):
             if self.watchtower: