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# -*- coding: utf-8 -*-
from PyQt5 import QtCore, QtWidgets
from PyQt5.QtWidgets import *
from electrum.util import inv_dict, bh2u, bfh
from electrum.i18n import _
from electrum.lnhtlc import HTLCStateMachine
from .util import MyTreeWidget, SortableTreeWidgetItem, WindowModalDialog, Buttons, OkButton, CancelButton
from .amountedit import BTCAmountEdit
class ChannelsList(MyTreeWidget):
update_rows = QtCore.pyqtSignal()
update_single_row = QtCore.pyqtSignal(HTLCStateMachine)
def __init__(self, parent):
MyTreeWidget.__init__(self, parent, self.create_menu, [_('Node ID'), _('Balance'), _('Remote'), _('Status')], 0)
self.main_window = parent
self.update_rows.connect(self.do_update_rows)
self.update_single_row.connect(self.do_update_single_row)
self.status = QLabel('')
def format_fields(self, chan):
status = self.parent.wallet.lnworker.channel_state[chan.channel_id]
return [
bh2u(chan.node_id),
self.parent.format_amount(chan.local_state.amount_msat//1000),
self.parent.format_amount(chan.remote_state.amount_msat//1000),
status
]
def create_menu(self, position):
menu = QMenu()
channel_id = self.currentItem().data(0, QtCore.Qt.UserRole)
print('ID', bh2u(channel_id))
def close():
suc, msg = self.parent.wallet.lnworker.close_channel(channel_id)
assert suc # TODO show error message in dialog
menu.addAction(_("Close channel"), close)
menu.exec_(self.viewport().mapToGlobal(position))
@QtCore.pyqtSlot(HTLCStateMachine)
def do_update_single_row(self, chan):
for i in range(self.topLevelItemCount()):
item = self.topLevelItem(i)
if item.data(0, QtCore.Qt.UserRole) == chan.channel_id:
for i, v in enumerate(self.format_fields(chan)):
item.setData(i, QtCore.Qt.DisplayRole, v)
@QtCore.pyqtSlot()
def do_update_rows(self):
self.clear()
for chan in self.parent.wallet.lnworker.channels.values():
item = SortableTreeWidgetItem(self.format_fields(chan))
item.setData(0, QtCore.Qt.UserRole, chan.channel_id)
self.insertTopLevelItem(0, item)
def get_toolbar(self):
b = QPushButton(_('Open Channel'))
b.clicked.connect(self.new_channel_dialog)
h = QHBoxLayout()
h.addWidget(self.status)
h.addStretch()
h.addWidget(b)
return h
def on_update(self):
n = len(self.parent.network.lightning_nodes)
np = len(self.parent.wallet.lnworker.peers)
self.status.setText(_('{} peers, {} nodes').format(np, n))
def new_channel_dialog(self):
d = WindowModalDialog(self.parent, _('Open Channel'))
d.setFixedWidth(700)
vbox = QVBoxLayout(d)
h = QGridLayout()
local_nodeid = QLineEdit()
local_nodeid.setText(bh2u(self.parent.wallet.lnworker.pubkey))
local_nodeid.setReadOnly(True)
local_nodeid.setCursorPosition(0)
remote_nodeid = QLineEdit()
local_amt_inp = BTCAmountEdit(self.parent.get_decimal_point)
local_amt_inp.setAmount(200000)
push_amt_inp = BTCAmountEdit(self.parent.get_decimal_point)
push_amt_inp.setAmount(0)
h.addWidget(QLabel(_('Your Node ID')), 0, 0)
h.addWidget(local_nodeid, 0, 1)
h.addWidget(QLabel(_('Remote Node ID')), 1, 0)
h.addWidget(remote_nodeid, 1, 1)
h.addWidget(QLabel('Local amount'), 2, 0)
h.addWidget(local_amt_inp, 2, 1)
h.addWidget(QLabel('Push amount'), 3, 0)
h.addWidget(push_amt_inp, 3, 1)
vbox.addLayout(h)
vbox.addLayout(Buttons(CancelButton(d), OkButton(d)))
if not d.exec_():
return
nodeid_hex = str(remote_nodeid.text())
local_amt = local_amt_inp.get_amount()
push_amt = push_amt_inp.get_amount()
try:
node_id = bfh(nodeid_hex)
except:
self.parent.show_error(_('Invalid node ID'))
return
if node_id not in self.parent.wallet.lnworker.peers and node_id not in self.parent.network.lightning_nodes:
self.parent.show_error(_('Unknown node:') + ' ' + nodeid_hex)
return
assert local_amt >= 200000
assert local_amt >= push_amt
self.main_window.protect(self.open_channel, (node_id, local_amt, push_amt))
def open_channel(self, *args, **kwargs):
self.parent.wallet.lnworker.open_channel(*args, **kwargs)