# Copyright (C) 2022 The Electrum developers # Distributed under the MIT software license, see the accompanying # file LICENCE or http://www.opensource.org/licenses/mit-license.php from typing import Optional, TYPE_CHECKING from PyQt5.QtGui import QFont, QCursor from PyQt5.QtCore import Qt, QSize from PyQt5.QtWidgets import (QComboBox, QLabel, QVBoxLayout, QGridLayout, QLineEdit, QTextEdit, QHBoxLayout, QPushButton, QWidget, QSizePolicy, QFrame) from electrum.bitcoin import is_address from electrum.i18n import _ from electrum.util import InvoiceError from electrum.invoices import PR_DEFAULT_EXPIRATION_WHEN_CREATING from electrum.invoices import PR_EXPIRED, pr_expiration_values from electrum.logging import Logger from .amountedit import AmountEdit, BTCAmountEdit, SizedFreezableLineEdit from .qrcodewidget import QRCodeWidget from .util import read_QIcon, ColorScheme, HelpLabel, WWLabel, MessageBoxMixin, MONOSPACE_FONT from .util import ButtonsTextEdit, get_iconname_qrcode if TYPE_CHECKING: from . import ElectrumGui from .main_window import ElectrumWindow class ReceiveTab(QWidget, MessageBoxMixin, Logger): # strings updated by update_current_request addr = '' lnaddr = '' URI = '' address_help = '' URI_help = '' ln_help = '' def __init__(self, window: 'ElectrumWindow'): QWidget.__init__(self, window) Logger.__init__(self) self.window = window self.wallet = window.wallet self.fx = window.fx self.config = window.config # A 4-column grid layout. All the stretch is in the last column. # The exchange rate plugin adds a fiat widget in column 2 self.receive_grid = grid = QGridLayout() grid.setSpacing(8) grid.setColumnStretch(3, 1) self.receive_message_e = SizedFreezableLineEdit(width=400) grid.addWidget(QLabel(_('Description')), 0, 0) grid.addWidget(self.receive_message_e, 0, 1, 1, 4) self.receive_amount_e = BTCAmountEdit(self.window.get_decimal_point) grid.addWidget(QLabel(_('Requested amount')), 1, 0) grid.addWidget(self.receive_amount_e, 1, 1) self.fiat_receive_e = AmountEdit(self.fx.get_currency if self.fx else '') if not self.fx or not self.fx.is_enabled(): self.fiat_receive_e.setVisible(False) grid.addWidget(self.fiat_receive_e, 1, 2, Qt.AlignLeft) self.window.connect_fields(self.receive_amount_e, self.fiat_receive_e) self.expiry_button = QPushButton('') self.expiry_button.clicked.connect(self.expiry_dialog) grid.addWidget(QLabel(_('Expiry')), 2, 0) grid.addWidget(self.expiry_button, 2, 1) self.clear_invoice_button = QPushButton(_('Clear')) self.clear_invoice_button.clicked.connect(self.do_clear) self.create_invoice_button = QPushButton(_('Create Request')) self.create_invoice_button.clicked.connect(lambda: self.create_invoice()) self.receive_buttons = buttons = QHBoxLayout() buttons.addStretch(1) buttons.addWidget(self.clear_invoice_button) buttons.addWidget(self.create_invoice_button) grid.addLayout(buttons, 4, 0, 1, -1) self.receive_e = QTextEdit() self.receive_e.setFont(QFont(MONOSPACE_FONT)) self.receive_e.setReadOnly(True) self.receive_e.setContextMenuPolicy(Qt.NoContextMenu) self.receive_e.setTextInteractionFlags(Qt.NoTextInteraction) self.receive_e.textChanged.connect(self.update_receive_widgets) self.receive_qr = QRCodeWidget(manual_size=True) self.receive_help_text = WWLabel('') self.receive_rebalance_button = QPushButton('Rebalance') self.receive_rebalance_button.suggestion = None def on_receive_rebalance(): if self.receive_rebalance_button.suggestion: chan1, chan2, delta = self.receive_rebalance_button.suggestion self.window.rebalance_dialog(chan1, chan2, amount_sat=delta) self.receive_rebalance_button.clicked.connect(on_receive_rebalance) self.receive_swap_button = QPushButton('Swap') self.receive_swap_button.suggestion = None def on_receive_swap(): if self.receive_swap_button.suggestion: chan, swap_recv_amount_sat = self.receive_swap_button.suggestion self.window.run_swap_dialog(is_reverse=True, recv_amount_sat=swap_recv_amount_sat, channels=[chan]) self.receive_swap_button.clicked.connect(on_receive_swap) buttons = QHBoxLayout() buttons.addWidget(self.receive_rebalance_button) buttons.addWidget(self.receive_swap_button) vbox = QVBoxLayout() vbox.addWidget(self.receive_help_text) vbox.addLayout(buttons) self.receive_help_widget = FramedWidget() self.receive_help_widget.setVisible(False) self.receive_help_widget.setLayout(vbox) self.receive_widget = ReceiveWidget( self, self.receive_e, self.receive_qr, self.receive_help_widget) receive_widget_sp = QSizePolicy(QSizePolicy.MinimumExpanding, QSizePolicy.MinimumExpanding) receive_widget_sp.setRetainSizeWhenHidden(True) self.receive_widget.setSizePolicy(receive_widget_sp) self.receive_widget.setVisible(False) self.receive_requests_label = QLabel(_('Requests')) # with QDarkStyle, this label may partially cover the qrcode widget. # setMaximumWidth prevents that self.receive_requests_label.setMaximumWidth(400) from .request_list import RequestList self.request_list = RequestList(self) # toolbar self.toolbar, menu = self.request_list.create_toolbar_with_menu('') self.toggle_qr_button = QPushButton('') self.toggle_qr_button.setIcon(read_QIcon(get_iconname_qrcode())) self.toggle_qr_button.setToolTip(_('Switch between text and QR code view')) self.toggle_qr_button.clicked.connect(self.toggle_receive_qr) self.toggle_qr_button.setEnabled(False) self.toolbar.insertWidget(2, self.toggle_qr_button) self.toggle_view_button = QPushButton('') self.toggle_view_button.setToolTip(_('switch between view')) self.toggle_view_button.clicked.connect(self.toggle_view) self.toggle_view_button.setEnabled(False) self.update_view_button() self.toolbar.insertWidget(2, self.toggle_view_button) # menu menu.addConfig( _('Add on-chain fallback to lightning requests'), self.config.cv.WALLET_BOLT11_FALLBACK, callback=self.on_toggle_bolt11_fallback) menu.addConfig( _('Add lightning requests to bitcoin URIs'), self.config.cv.WALLET_BIP21_LIGHTNING, tooltip=_('This may result in large QR codes'), callback=self.update_current_request) self.qr_menu_action = menu.addToggle(_("Show detached QR code window"), self.window.toggle_qr_window) menu.addAction(_("Import requests"), self.window.import_requests) menu.addAction(_("Export requests"), self.window.export_requests) menu.addAction(_("Delete expired requests"), self.request_list.delete_expired_requests) self.toolbar_menu = menu # layout vbox_g = QVBoxLayout() vbox_g.addLayout(grid) vbox_g.addStretch() hbox = QHBoxLayout() hbox.addLayout(vbox_g) hbox.addStretch() hbox.addWidget(self.receive_widget) self.searchable_list = self.request_list vbox = QVBoxLayout(self) vbox.addLayout(self.toolbar) vbox.addLayout(hbox) vbox.addStretch() vbox.addWidget(self.receive_requests_label) vbox.addWidget(self.request_list) vbox.setStretchFactor(hbox, 40) vbox.setStretchFactor(self.request_list, 60) self.request_list.update() # after parented and put into a layout, can update without flickering self.update_expiry_text() def update_expiry_text(self): expiry = self.config.WALLET_PAYREQ_EXPIRY_SECONDS text = pr_expiration_values[expiry] self.expiry_button.setText(text) def expiry_dialog(self): msg = ''.join([ _('Expiration period of your request.'), ' ', _('This information is seen by the recipient if you send them a signed payment request.'), '\n\n', _('For on-chain requests, the address gets reserved until expiration. After that, it might get reused.'), ' ', _('The bitcoin address never expires and will always be part of this electrum wallet.'), ' ', _('You can reuse a bitcoin address any number of times but it is not good for your privacy.'), '\n\n', _('For Lightning requests, payments will not be accepted after the expiration.'), ]) expiry = self.config.WALLET_PAYREQ_EXPIRY_SECONDS v = self.window.query_choice(msg, pr_expiration_values, title=_('Expiry'), default_choice=expiry) if v is None: return self.config.WALLET_PAYREQ_EXPIRY_SECONDS = v self.update_expiry_text() def on_toggle_bolt11_fallback(self): if not self.wallet.lnworker: return self.wallet.lnworker.clear_invoices_cache() self.update_current_request() def update_view_button(self): i = self.config.GUI_QT_RECEIVE_TABS_INDEX if i == 0: icon, text = read_QIcon("link.png"), _('Bitcoin URI') elif i == 1: icon, text = read_QIcon("bitcoin.png"), _('Address') elif i == 2: icon, text = read_QIcon("lightning.png"), _('Lightning') self.toggle_view_button.setText(text) self.toggle_view_button.setIcon(icon) def toggle_view(self): i = self.config.GUI_QT_RECEIVE_TABS_INDEX i = (i + 1) % (3 if self.wallet.has_lightning() else 2) self.config.GUI_QT_RECEIVE_TABS_INDEX = i self.update_current_request() self.update_view_button() def on_tab_changed(self): text, data, help_text, title = self.get_tab_data() self.window.do_copy(data, title=title) self.update_receive_qr_window() def do_copy(self, e): if e.button() != Qt.LeftButton: return text, data, help_text, title = self.get_tab_data() self.window.do_copy(data, title=title) def toggle_receive_qr(self): b = not self.config.GUI_QT_RECEIVE_TAB_QR_VISIBLE self.config.GUI_QT_RECEIVE_TAB_QR_VISIBLE = b self.update_receive_widgets() def update_receive_widgets(self): b = self.config.GUI_QT_RECEIVE_TAB_QR_VISIBLE self.receive_widget.update_visibility(b) def update_current_request(self): key = self.request_list.get_current_key() req = self.wallet.get_request(key) if key else None if req is None: self.receive_e.setText('') self.addr = self.URI = self.lnaddr = '' self.address_help = self.URI_help = self.ln_help = '' return help_texts = self.wallet.get_help_texts_for_receive_request(req) self.addr = (req.get_address() or '') if not help_texts.address_is_error else '' self.URI = (self.wallet.get_request_URI(req) or '') if not help_texts.URI_is_error else '' self.lnaddr = self.wallet.get_bolt11_invoice(req) if not help_texts.ln_is_error else '' self.address_help = help_texts.address_help self.URI_help = help_texts.URI_help self.ln_help = help_texts.ln_help can_rebalance = help_texts.can_rebalance() can_swap = help_texts.can_swap() self.receive_rebalance_button.suggestion = help_texts.ln_rebalance_suggestion self.receive_swap_button.suggestion = help_texts.ln_swap_suggestion self.receive_rebalance_button.setVisible(can_rebalance) self.receive_swap_button.setVisible(can_swap) self.receive_rebalance_button.setEnabled(can_rebalance and self.window.num_tasks() == 0) self.receive_swap_button.setEnabled(can_swap and self.window.num_tasks() == 0) text, data, help_text, title = self.get_tab_data() self.receive_e.setText(text) self.receive_qr.setData(data) self.receive_help_text.setText(help_text) for w in [self.receive_e, self.receive_qr]: w.setEnabled(bool(text) and not help_text) w.setToolTip(help_text) # macOS hack (similar to #4777) self.receive_e.repaint() # always show self.receive_widget.setVisible(True) self.toggle_qr_button.setEnabled(True) self.toggle_view_button.setEnabled(True) self.update_receive_qr_window() def get_tab_data(self): i = self.config.GUI_QT_RECEIVE_TABS_INDEX if i == 0: out = self.URI, self.URI, self.URI_help, _('Bitcoin URI') elif i == 1: out = self.addr, self.addr, self.address_help, _('Address') elif i == 2: # encode lightning invoices as uppercase so QR encoding can use # alphanumeric mode; resulting in smaller QR codes out = self.lnaddr, self.lnaddr.upper(), self.ln_help, _('Lightning Request') return out def update_receive_qr_window(self): if self.window.qr_window and self.window.qr_window.isVisible(): text, data, help_text, title = self.get_tab_data() self.window.qr_window.qrw.setData(data) def create_invoice(self): amount_sat = self.receive_amount_e.get_amount() message = self.receive_message_e.text() expiry = self.config.WALLET_PAYREQ_EXPIRY_SECONDS if amount_sat and amount_sat < self.wallet.dust_threshold(): address = None if not self.wallet.has_lightning(): self.show_error(_('Amount too small to be received onchain')) return else: address = self.get_bitcoin_address_for_request(amount_sat) if not address: return self.window.address_list.update() # generate even if we cannot receive try: key = self.wallet.create_request(amount_sat, message, expiry, address) except InvoiceError as e: self.show_error(_('Error creating payment request') + ':\n' + str(e)) return except Exception as e: self.logger.exception('Error adding payment request') self.show_error(_('Error adding payment request') + ':\n' + repr(e)) return assert key is not None self.window.address_list.refresh_all() self.request_list.update() self.request_list.set_current_key(key) # clear request fields self.receive_amount_e.setText('') self.receive_message_e.setText('') # copy current tab to clipboard self.on_tab_changed() def get_bitcoin_address_for_request(self, amount) -> Optional[str]: addr = self.wallet.get_unused_address() if addr is None: if not self.wallet.is_deterministic(): # imported wallet msg = [ _('No more addresses in your wallet.'), ' ', _('You are using a non-deterministic wallet, which cannot create new addresses.'), ' ', _('If you want to create new addresses, use a deterministic wallet instead.'), '\n\n', _('Creating a new payment request will reuse one of your addresses and overwrite an existing request. Continue anyway?'), ] if not self.question(''.join(msg)): return addr = self.wallet.get_receiving_address() else: # deterministic wallet if not self.question(_("Warning: The next address will not be recovered automatically if you restore your wallet from seed; you may need to add it manually.\n\nThis occurs because you have too many unused addresses in your wallet. To avoid this situation, use the existing addresses first.\n\nCreate anyway?")): return addr = self.wallet.create_new_address(False) return addr def do_clear(self): self.receive_e.setText('') self.addr = self.URI = self.lnaddr = '' self.address_help = self.URI_help = self.ln_help = '' self.receive_widget.setVisible(False) self.toggle_qr_button.setEnabled(False) self.toggle_view_button.setEnabled(False) self.receive_message_e.setText('') self.receive_amount_e.setAmount(None) self.request_list.clearSelection() class ReceiveWidget(QWidget): min_size = QSize(200, 200) def __init__(self, receive_tab: 'ReceiveTab', textedit: QWidget, qr: QWidget, help_widget: QWidget): QWidget.__init__(self) self.textedit = textedit self.qr = qr self.help_widget = help_widget self.setMinimumSize(self.min_size) for w in [textedit, qr, help_widget]: w.setMinimumSize(self.min_size) for w in [textedit, qr]: w.mousePressEvent = receive_tab.do_copy w.setCursor(QCursor(Qt.PointingHandCursor)) textedit.setFocusPolicy(Qt.NoFocus) if isinstance(help_widget, QLabel): help_widget.setFrameStyle(QFrame.StyledPanel) help_widget.setStyleSheet("QLabel {border:1px solid gray; border-radius:2px; }") hbox = QHBoxLayout() hbox.setContentsMargins(0, 0, 0, 0) hbox.addWidget(textedit) hbox.addWidget(help_widget) hbox.addWidget(qr) self.setLayout(hbox) def update_visibility(self, is_qr): if str(self.textedit.toPlainText()): self.help_widget.setVisible(False) self.textedit.setVisible(not is_qr) self.qr.setVisible(is_qr) else: self.help_widget.setVisible(True) self.textedit.setVisible(False) self.qr.setVisible(False) def resizeEvent(self, e): # keep square aspect ratio when resized size = e.size() w = size.height() self.setFixedWidth(w) return super().resizeEvent(e) class FramedWidget(QFrame): def __init__(self): QFrame.__init__(self) self.setFrameStyle(QFrame.StyledPanel) self.setStyleSheet("FramedWidget {border:1px solid gray; border-radius:2px; }")