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161 lines
6.8 KiB
161 lines
6.8 KiB
from typing import TYPE_CHECKING, Optional |
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from PyQt6.QtWidgets import QLabel, QVBoxLayout, QGridLayout, QPushButton, QComboBox, QLineEdit, QSpacerItem, QWidget, QHBoxLayout |
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import electrum_ecc as ecc |
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from electrum.i18n import _ |
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from electrum.transaction import PartialTxOutput, PartialTransaction |
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from electrum.lnutil import MIN_FUNDING_SAT |
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from electrum.lnworker import hardcoded_trampoline_nodes |
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from electrum.util import NotEnoughFunds, NoDynamicFeeEstimates |
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from electrum.gui import messages |
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from . import util |
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from .util import (WindowModalDialog, Buttons, OkButton, CancelButton, |
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EnterButton, ColorScheme, WWLabel, read_QIcon, IconLabel, |
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char_width_in_lineedit) |
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from .amountedit import BTCAmountEdit |
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from .my_treeview import create_toolbar_with_menu |
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if TYPE_CHECKING: |
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from .main_window import ElectrumWindow |
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class NewChannelDialog(WindowModalDialog): |
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def __init__(self, window: 'ElectrumWindow', amount_sat: Optional[int] = None, min_amount_sat: Optional[int] = None): |
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WindowModalDialog.__init__(self, window, _('Open Channel')) |
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self.window = window |
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self.network = window.network |
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self.config = window.config |
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self.lnworker = self.window.wallet.lnworker |
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self.trampolines = hardcoded_trampoline_nodes() |
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self.trampoline_names = list(self.trampolines.keys()) |
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self.min_amount_sat = min_amount_sat or MIN_FUNDING_SAT |
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vbox = QVBoxLayout(self) |
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toolbar, menu = create_toolbar_with_menu(self.config, '') |
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menu.addConfig( |
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self.config.cv.LIGHTNING_USE_RECOVERABLE_CHANNELS, |
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checked=self.lnworker.has_recoverable_channels(), |
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).setEnabled(self.lnworker.can_have_recoverable_channels()) |
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vbox.addLayout(toolbar) |
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msg = _('Choose a remote node and an amount to fund the channel.') |
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msg += '\n' + _('Minimum required amount: {}').format(self.window.format_amount_and_units(self.min_amount_sat)) |
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vbox.addWidget(WWLabel(msg)) |
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if self.network.channel_db: |
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vbox.addWidget(QLabel(_('Enter Remote Node ID or connection string or invoice'))) |
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self.remote_nodeid = QLineEdit() |
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self.remote_nodeid.setMinimumWidth(700) |
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self.suggest_button = QPushButton(self, text=_('Suggest Peer')) |
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self.suggest_button.clicked.connect(self.on_suggest) |
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else: |
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self.trampoline_combo = QComboBox() |
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self.trampoline_combo.addItems(self.trampoline_names) |
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self.trampoline_combo.setCurrentIndex(1) |
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self.amount_e = BTCAmountEdit(self.window.get_decimal_point) |
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self.amount_e.setAmount(amount_sat) |
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btn_width = 10 * char_width_in_lineedit() |
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self.min_button = EnterButton(_("Min"), self.spend_min) |
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self.min_button.setEnabled(bool(self.min_amount_sat)) |
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self.min_button.setFixedWidth(btn_width) |
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self.max_button = EnterButton(_("Max"), self.spend_max) |
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self.max_button.setFixedWidth(btn_width) |
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self.max_button.setCheckable(True) |
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self.clear_button = QPushButton(self, text=_('Clear')) |
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self.clear_button.clicked.connect(self.on_clear) |
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self.clear_button.setFixedWidth(btn_width) |
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h = QGridLayout() |
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if self.network.channel_db: |
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h.addWidget(QLabel(_('Remote Node ID')), 0, 0) |
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h.addWidget(self.remote_nodeid, 0, 1, 1, 4) |
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h.addWidget(self.suggest_button, 0, 5) |
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else: |
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h.addWidget(QLabel(_('Remote Node')), 0, 0) |
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h.addWidget(self.trampoline_combo, 0, 1, 1, 4) |
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h.addWidget(QLabel('Amount'), 2, 0) |
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amt_hbox = QHBoxLayout() |
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amt_hbox.setContentsMargins(0, 0, 0, 0) |
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amt_hbox.addWidget(self.amount_e) |
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amt_hbox.addWidget(self.min_button) |
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amt_hbox.addWidget(self.max_button) |
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amt_hbox.addWidget(self.clear_button) |
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amt_hbox.addStretch() |
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h.addLayout(amt_hbox, 2, 1, 1, 4) |
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vbox.addLayout(h) |
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vbox.addStretch() |
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ok_button = OkButton(self) |
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ok_button.setDefault(True) |
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vbox.addLayout(Buttons(CancelButton(self), ok_button)) |
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def on_suggest(self): |
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self.network.start_gossip() |
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nodeid = (self.lnworker.suggest_peer() or b"").hex() |
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if not nodeid: |
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self.remote_nodeid.setText("") |
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self.remote_nodeid.setPlaceholderText( |
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"Please wait until the graph is synchronized to 30%, and then try again.") |
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else: |
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self.remote_nodeid.setText(nodeid) |
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self.remote_nodeid.repaint() # macOS hack for #6269 |
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def on_clear(self): |
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self.amount_e.setText('') |
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self.amount_e.setFrozen(False) |
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self.amount_e.repaint() # macOS hack for #6269 |
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if self.network.channel_db: |
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self.remote_nodeid.setText('') |
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self.remote_nodeid.repaint() # macOS hack for #6269 |
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self.max_button.setChecked(False) |
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self.max_button.repaint() # macOS hack for #6269 |
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def spend_min(self): |
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self.max_button.setChecked(False) |
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self.amount_e.setFrozen(False) |
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self.amount_e.setAmount(self.min_amount_sat) |
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def spend_max(self): |
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self.amount_e.setFrozen(self.max_button.isChecked()) |
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if not self.max_button.isChecked(): |
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return |
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dummy_nodeid = ecc.GENERATOR.get_public_key_bytes(compressed=True) |
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make_tx = self.window.mktx_for_open_channel(funding_sat='!', node_id=dummy_nodeid) |
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try: |
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tx = make_tx(None) |
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except (NotEnoughFunds, NoDynamicFeeEstimates) as e: |
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self.max_button.setChecked(False) |
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self.amount_e.setFrozen(False) |
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self.window.show_error(str(e)) |
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return |
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amount = tx.output_value() |
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amount = min(amount, self.config.LIGHTNING_MAX_FUNDING_SAT) |
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self.amount_e.setAmount(amount) |
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def run(self): |
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if not self.exec(): |
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return |
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if self.max_button.isChecked() and self.amount_e.get_amount() < self.config.LIGHTNING_MAX_FUNDING_SAT: |
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# if 'max' enabled and amount is strictly less than max allowed, |
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# that means we have fewer coins than max allowed, and hence we can |
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# spend all coins |
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funding_sat = '!' |
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else: |
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funding_sat = self.amount_e.get_amount() |
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if not funding_sat: |
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return |
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if funding_sat != '!': |
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if self.min_amount_sat and funding_sat < self.min_amount_sat: |
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self.window.show_error(_('Amount too low')) |
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return |
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if self.network.channel_db: |
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connect_str = str(self.remote_nodeid.text()).strip() |
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else: |
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name = self.trampoline_names[self.trampoline_combo.currentIndex()] |
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connect_str = str(self.trampolines[name]) |
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if not connect_str: |
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return |
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self.window.open_channel(connect_str, funding_sat, 0) |
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return True
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