mirror of
https://github.com/LBRYFoundation/LBRY-Vault.git
synced 2025-08-23 17:47:31 +00:00
aa518c0ea5
When "importing" a psbt, we accept witness utxos even for legacy inputs (warning shown to user in gui). When "exporting" a psbt, we follow the spec; except when exporting as a QR code, in which case we include witness utxos for all inputs. This makes QR codes for psbts with legacy inputs feasible, just like they were before, with our custom tx serialization format (with the same risk, of burning coins as miner fees).
532 lines
22 KiB
Python
532 lines
22 KiB
Python
#!/usr/bin/env python
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#
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# Electrum - lightweight Bitcoin client
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# Copyright (C) 2012 thomasv@gitorious
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#
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# Permission is hereby granted, free of charge, to any person
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# obtaining a copy of this software and associated documentation files
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# (the "Software"), to deal in the Software without restriction,
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# including without limitation the rights to use, copy, modify, merge,
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# publish, distribute, sublicense, and/or sell copies of the Software,
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# and to permit persons to whom the Software is furnished to do so,
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# subject to the following conditions:
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#
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# The above copyright notice and this permission notice shall be
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# included in all copies or substantial portions of the Software.
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#
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# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
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# BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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# ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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# CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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# SOFTWARE.
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import sys
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import copy
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import datetime
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import traceback
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import time
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from typing import TYPE_CHECKING, Callable
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from PyQt5.QtCore import QSize, Qt
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from PyQt5.QtGui import QTextCharFormat, QBrush, QFont, QPixmap
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from PyQt5.QtWidgets import (QDialog, QLabel, QPushButton, QHBoxLayout, QVBoxLayout,
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QTextEdit, QFrame, QAction, QToolButton, QMenu)
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import qrcode
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from qrcode import exceptions
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from electrum.bitcoin import base_encode
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from electrum.i18n import _
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from electrum.plugin import run_hook
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from electrum import simple_config
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from electrum.util import bfh
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from electrum.transaction import SerializationError, Transaction, PartialTransaction, PartialTxInput
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from electrum.logging import get_logger
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from .util import (MessageBoxMixin, read_QIcon, Buttons, CopyButton, icon_path,
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MONOSPACE_FONT, ColorScheme, ButtonsLineEdit, text_dialog,
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char_width_in_lineedit)
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if TYPE_CHECKING:
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from .main_window import ElectrumWindow
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SAVE_BUTTON_ENABLED_TOOLTIP = _("Save transaction offline")
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SAVE_BUTTON_DISABLED_TOOLTIP = _("Please sign this transaction in order to save it")
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_logger = get_logger(__name__)
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dialogs = [] # Otherwise python randomly garbage collects the dialogs...
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def show_transaction(tx: Transaction, *, parent: 'ElectrumWindow', invoice=None, desc=None, prompt_if_unsaved=False):
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try:
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d = TxDialog(tx, parent=parent, invoice=invoice, desc=desc, prompt_if_unsaved=prompt_if_unsaved)
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except SerializationError as e:
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_logger.exception('unable to deserialize the transaction')
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parent.show_critical(_("Electrum was unable to deserialize the transaction:") + "\n" + str(e))
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else:
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dialogs.append(d)
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d.show()
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class TxDialog(QDialog, MessageBoxMixin):
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def __init__(self, tx: Transaction, *, parent: 'ElectrumWindow', invoice, desc, prompt_if_unsaved):
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'''Transactions in the wallet will show their description.
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Pass desc to give a description for txs not yet in the wallet.
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'''
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# We want to be a top-level window
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QDialog.__init__(self, parent=None)
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# Take a copy; it might get updated in the main window by
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# e.g. the FX plugin. If this happens during or after a long
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# sign operation the signatures are lost.
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self.tx = tx = copy.deepcopy(tx)
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try:
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self.tx.deserialize()
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except BaseException as e:
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raise SerializationError(e)
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self.main_window = parent
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self.wallet = parent.wallet
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self.prompt_if_unsaved = prompt_if_unsaved
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self.saved = False
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self.desc = desc
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self.invoice = invoice
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# if the wallet can populate the inputs with more info, do it now.
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# as a result, e.g. we might learn an imported address tx is segwit,
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# or that a beyond-gap-limit address is is_mine
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tx.add_info_from_wallet(self.wallet)
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self.setMinimumWidth(950)
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self.setWindowTitle(_("Transaction"))
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vbox = QVBoxLayout()
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self.setLayout(vbox)
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vbox.addWidget(QLabel(_("Transaction ID:")))
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self.tx_hash_e = ButtonsLineEdit()
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qr_show = lambda: parent.show_qrcode(str(self.tx_hash_e.text()), 'Transaction ID', parent=self)
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qr_icon = "qrcode_white.png" if ColorScheme.dark_scheme else "qrcode.png"
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self.tx_hash_e.addButton(qr_icon, qr_show, _("Show as QR code"))
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self.tx_hash_e.setReadOnly(True)
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vbox.addWidget(self.tx_hash_e)
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self.add_tx_stats(vbox)
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vbox.addSpacing(10)
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self.inputs_header = QLabel()
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vbox.addWidget(self.inputs_header)
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self.inputs_textedit = QTextEditWithDefaultSize()
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vbox.addWidget(self.inputs_textedit)
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self.outputs_header = QLabel()
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vbox.addWidget(self.outputs_header)
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self.outputs_textedit = QTextEditWithDefaultSize()
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vbox.addWidget(self.outputs_textedit)
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self.sign_button = b = QPushButton(_("Sign"))
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b.clicked.connect(self.sign)
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self.broadcast_button = b = QPushButton(_("Broadcast"))
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b.clicked.connect(self.do_broadcast)
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self.save_button = b = QPushButton(_("Save"))
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save_button_disabled = not tx.is_complete()
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b.setDisabled(save_button_disabled)
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if save_button_disabled:
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b.setToolTip(SAVE_BUTTON_DISABLED_TOOLTIP)
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else:
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b.setToolTip(SAVE_BUTTON_ENABLED_TOOLTIP)
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b.clicked.connect(self.save)
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self.cancel_button = b = QPushButton(_("Close"))
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b.clicked.connect(self.close)
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b.setDefault(True)
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self.export_actions_menu = export_actions_menu = QMenu()
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self.add_export_actions_to_menu(export_actions_menu)
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export_actions_menu.addSeparator()
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if isinstance(tx, PartialTransaction):
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export_for_coinjoin_submenu = export_actions_menu.addMenu(_("For CoinJoin; strip privates"))
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self.add_export_actions_to_menu(export_for_coinjoin_submenu, gettx=self._gettx_for_coinjoin)
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self.export_actions_button = QToolButton()
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self.export_actions_button.setText(_("Export"))
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self.export_actions_button.setMenu(export_actions_menu)
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self.export_actions_button.setPopupMode(QToolButton.InstantPopup)
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partial_tx_actions_menu = QMenu()
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ptx_merge_sigs_action = QAction(_("Merge signatures from"), self)
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ptx_merge_sigs_action.triggered.connect(self.merge_sigs)
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partial_tx_actions_menu.addAction(ptx_merge_sigs_action)
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ptx_join_txs_action = QAction(_("Join inputs/outputs"), self)
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ptx_join_txs_action.triggered.connect(self.join_tx_with_another)
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partial_tx_actions_menu.addAction(ptx_join_txs_action)
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self.partial_tx_actions_button = QToolButton()
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self.partial_tx_actions_button.setText(_("Combine"))
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self.partial_tx_actions_button.setMenu(partial_tx_actions_menu)
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self.partial_tx_actions_button.setPopupMode(QToolButton.InstantPopup)
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# Action buttons
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self.buttons = []
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if isinstance(tx, PartialTransaction):
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self.buttons.append(self.partial_tx_actions_button)
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self.buttons += [self.sign_button, self.broadcast_button, self.cancel_button]
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# Transaction sharing buttons
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self.sharing_buttons = [self.export_actions_button, self.save_button]
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run_hook('transaction_dialog', self)
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hbox = QHBoxLayout()
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hbox.addLayout(Buttons(*self.sharing_buttons))
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hbox.addStretch(1)
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hbox.addLayout(Buttons(*self.buttons))
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vbox.addLayout(hbox)
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self.update()
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def do_broadcast(self):
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self.main_window.push_top_level_window(self)
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try:
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self.main_window.broadcast_transaction(self.tx, invoice=self.invoice, tx_desc=self.desc)
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finally:
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self.main_window.pop_top_level_window(self)
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self.saved = True
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self.update()
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def closeEvent(self, event):
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if (self.prompt_if_unsaved and not self.saved
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and not self.question(_('This transaction is not saved. Close anyway?'), title=_("Warning"))):
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event.ignore()
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else:
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event.accept()
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try:
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dialogs.remove(self)
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except ValueError:
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pass # was not in list already
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def reject(self):
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# Override escape-key to close normally (and invoke closeEvent)
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self.close()
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def add_export_actions_to_menu(self, menu: QMenu, *, gettx: Callable[[], Transaction] = None) -> None:
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if gettx is None:
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gettx = lambda: None
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action = QAction(_("Copy to clipboard"), self)
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action.triggered.connect(lambda: self.copy_to_clipboard(tx=gettx()))
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menu.addAction(action)
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qr_icon = "qrcode_white.png" if ColorScheme.dark_scheme else "qrcode.png"
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action = QAction(read_QIcon(qr_icon), _("Show as QR code"), self)
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action.triggered.connect(lambda: self.show_qr(tx=gettx()))
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menu.addAction(action)
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action = QAction(_("Export to file"), self)
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action.triggered.connect(lambda: self.export_to_file(tx=gettx()))
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menu.addAction(action)
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def _gettx_for_coinjoin(self) -> PartialTransaction:
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if not isinstance(self.tx, PartialTransaction):
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raise Exception("Can only export partial transactions for coinjoins.")
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tx = copy.deepcopy(self.tx)
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tx.prepare_for_export_for_coinjoin()
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return tx
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def copy_to_clipboard(self, *, tx: Transaction = None):
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if tx is None:
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tx = self.tx
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self.main_window.app.clipboard().setText(str(tx))
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def show_qr(self, *, tx: Transaction = None):
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if tx is None:
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tx = self.tx
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tx = copy.deepcopy(tx) # make copy as we mutate tx
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if isinstance(tx, PartialTransaction):
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# this makes QR codes a lot smaller (or just possible in the first place!)
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tx.convert_all_utxos_to_witness_utxos()
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text = tx.serialize_as_bytes()
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text = base_encode(text, base=43)
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try:
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self.main_window.show_qrcode(text, 'Transaction', parent=self)
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except qrcode.exceptions.DataOverflowError:
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self.show_error(_('Failed to display QR code.') + '\n' +
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_('Transaction is too large in size.'))
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except Exception as e:
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self.show_error(_('Failed to display QR code.') + '\n' + repr(e))
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def sign(self):
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def sign_done(success):
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# note: with segwit we could save partially signed tx, because they have a txid
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if self.tx.is_complete():
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self.prompt_if_unsaved = True
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self.saved = False
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self.save_button.setDisabled(False)
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self.save_button.setToolTip(SAVE_BUTTON_ENABLED_TOOLTIP)
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self.update()
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self.main_window.pop_top_level_window(self)
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self.sign_button.setDisabled(True)
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self.main_window.push_top_level_window(self)
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self.main_window.sign_tx(self.tx, sign_done)
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def save(self):
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self.main_window.push_top_level_window(self)
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if self.main_window.save_transaction_into_wallet(self.tx):
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self.save_button.setDisabled(True)
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self.saved = True
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self.main_window.pop_top_level_window(self)
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def export_to_file(self, *, tx: Transaction = None):
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if tx is None:
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tx = self.tx
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if isinstance(tx, PartialTransaction):
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tx.finalize_psbt()
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if tx.is_complete():
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name = 'signed_%s.txn' % (tx.txid()[0:8])
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else:
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name = self.wallet.basename() + time.strftime('-%Y%m%d-%H%M.psbt')
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fileName = self.main_window.getSaveFileName(_("Select where to save your signed transaction"), name, "*.txn;;*.psbt")
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if not fileName:
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return
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if tx.is_complete(): # network tx hex
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with open(fileName, "w+") as f:
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network_tx_hex = tx.serialize_to_network()
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f.write(network_tx_hex + '\n')
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else: # if partial: PSBT bytes
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assert isinstance(tx, PartialTransaction)
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with open(fileName, "wb+") as f:
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f.write(tx.serialize_as_bytes())
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self.show_message(_("Transaction exported successfully"))
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self.saved = True
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def merge_sigs(self):
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if not isinstance(self.tx, PartialTransaction):
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return
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text = text_dialog(self, _('Input raw transaction'),
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_("Transaction to merge signatures from") + ":",
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_("Load transaction"))
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if not text:
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return
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tx = self.main_window.tx_from_text(text)
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if not tx:
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return
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try:
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self.tx.combine_with_other_psbt(tx)
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except Exception as e:
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self.show_error(_("Error combining partial transactions") + ":\n" + repr(e))
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return
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self.update()
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def join_tx_with_another(self):
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if not isinstance(self.tx, PartialTransaction):
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return
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text = text_dialog(self, _('Input raw transaction'),
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_("Transaction to join with") + " (" + _("add inputs and outputs") + "):",
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_("Load transaction"))
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if not text:
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return
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tx = self.main_window.tx_from_text(text)
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if not tx:
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return
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try:
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self.tx.join_with_other_psbt(tx)
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except Exception as e:
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self.show_error(_("Error joining partial transactions") + ":\n" + repr(e))
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return
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self.update()
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def update(self):
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self.update_io()
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desc = self.desc
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base_unit = self.main_window.base_unit()
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format_amount = self.main_window.format_amount
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tx_details = self.wallet.get_tx_info(self.tx)
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tx_mined_status = tx_details.tx_mined_status
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exp_n = tx_details.mempool_depth_bytes
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amount, fee = tx_details.amount, tx_details.fee
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size = self.tx.estimated_size()
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self.broadcast_button.setEnabled(tx_details.can_broadcast)
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can_sign = not self.tx.is_complete() and \
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(self.wallet.can_sign(self.tx) or bool(self.main_window.tx_external_keypairs))
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self.sign_button.setEnabled(can_sign)
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self.tx_hash_e.setText(tx_details.txid or _('Unknown'))
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if desc is None:
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self.tx_desc.hide()
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else:
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self.tx_desc.setText(_("Description") + ': ' + desc)
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self.tx_desc.show()
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self.status_label.setText(_('Status:') + ' ' + tx_details.status)
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if tx_mined_status.timestamp:
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time_str = datetime.datetime.fromtimestamp(tx_mined_status.timestamp).isoformat(' ')[:-3]
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self.date_label.setText(_("Date: {}").format(time_str))
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self.date_label.show()
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elif exp_n:
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text = '%.2f MB'%(exp_n/1000000)
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self.date_label.setText(_('Position in mempool: {} from tip').format(text))
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self.date_label.show()
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else:
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self.date_label.hide()
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self.locktime_label.setText(f"LockTime: {self.tx.locktime}")
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self.rbf_label.setText(f"RBF: {not self.tx.is_final()}")
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if tx_mined_status.header_hash:
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self.block_hash_label.setText(_("Included in block: {}")
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.format(tx_mined_status.header_hash))
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self.block_height_label.setText(_("At block height: {}")
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.format(tx_mined_status.height))
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else:
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self.block_hash_label.hide()
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self.block_height_label.hide()
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if amount is None:
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amount_str = _("Transaction unrelated to your wallet")
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elif amount > 0:
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amount_str = _("Amount received:") + ' %s'% format_amount(amount) + ' ' + base_unit
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else:
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amount_str = _("Amount sent:") + ' %s'% format_amount(-amount) + ' ' + base_unit
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size_str = _("Size:") + ' %d bytes'% size
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fee_str = _("Fee") + ': %s' % (format_amount(fee) + ' ' + base_unit if fee is not None else _('unknown'))
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if fee is not None:
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fee_rate = fee/size*1000
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fee_str += ' ( %s ) ' % self.main_window.format_fee_rate(fee_rate)
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feerate_warning = simple_config.FEERATE_WARNING_HIGH_FEE
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if fee_rate > feerate_warning:
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fee_str += ' - ' + _('Warning') + ': ' + _("high fee") + '!'
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if isinstance(self.tx, PartialTransaction):
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risk_of_burning_coins = (can_sign and fee is not None
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and self.tx.is_there_risk_of_burning_coins_as_fees())
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self.fee_warning_icon.setVisible(risk_of_burning_coins)
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self.amount_label.setText(amount_str)
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self.fee_label.setText(fee_str)
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self.size_label.setText(size_str)
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run_hook('transaction_dialog_update', self)
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def update_io(self):
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self.inputs_header.setText(_("Inputs") + ' (%d)'%len(self.tx.inputs()))
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ext = QTextCharFormat()
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rec = QTextCharFormat()
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rec.setBackground(QBrush(ColorScheme.GREEN.as_color(background=True)))
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rec.setToolTip(_("Wallet receive address"))
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chg = QTextCharFormat()
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chg.setBackground(QBrush(ColorScheme.YELLOW.as_color(background=True)))
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chg.setToolTip(_("Wallet change address"))
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twofactor = QTextCharFormat()
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twofactor.setBackground(QBrush(ColorScheme.BLUE.as_color(background=True)))
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twofactor.setToolTip(_("TrustedCoin (2FA) fee for the next batch of transactions"))
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def text_format(addr):
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if self.wallet.is_mine(addr):
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return chg if self.wallet.is_change(addr) else rec
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elif self.wallet.is_billing_address(addr):
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return twofactor
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return ext
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def format_amount(amt):
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return self.main_window.format_amount(amt, whitespaces=True)
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i_text = self.inputs_textedit
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i_text.clear()
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i_text.setFont(QFont(MONOSPACE_FONT))
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i_text.setReadOnly(True)
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cursor = i_text.textCursor()
|
|
for txin in self.tx.inputs():
|
|
if txin.is_coinbase():
|
|
cursor.insertText('coinbase')
|
|
else:
|
|
prevout_hash = txin.prevout.txid.hex()
|
|
prevout_n = txin.prevout.out_idx
|
|
cursor.insertText(prevout_hash + ":%-4d " % prevout_n, ext)
|
|
addr = self.wallet.get_txin_address(txin)
|
|
if addr is None:
|
|
addr = ''
|
|
cursor.insertText(addr, text_format(addr))
|
|
if isinstance(txin, PartialTxInput) and txin.value_sats() is not None:
|
|
cursor.insertText(format_amount(txin.value_sats()), ext)
|
|
cursor.insertBlock()
|
|
|
|
self.outputs_header.setText(_("Outputs") + ' (%d)'%len(self.tx.outputs()))
|
|
o_text = self.outputs_textedit
|
|
o_text.clear()
|
|
o_text.setFont(QFont(MONOSPACE_FONT))
|
|
o_text.setReadOnly(True)
|
|
cursor = o_text.textCursor()
|
|
for o in self.tx.outputs():
|
|
addr, v = o.get_ui_address_str(), o.value
|
|
cursor.insertText(addr, text_format(addr))
|
|
if v is not None:
|
|
cursor.insertText('\t', ext)
|
|
cursor.insertText(format_amount(v), ext)
|
|
cursor.insertBlock()
|
|
|
|
def add_tx_stats(self, vbox):
|
|
hbox_stats = QHBoxLayout()
|
|
|
|
# left column
|
|
vbox_left = QVBoxLayout()
|
|
self.tx_desc = TxDetailLabel(word_wrap=True)
|
|
vbox_left.addWidget(self.tx_desc)
|
|
self.status_label = TxDetailLabel()
|
|
vbox_left.addWidget(self.status_label)
|
|
self.date_label = TxDetailLabel()
|
|
vbox_left.addWidget(self.date_label)
|
|
self.amount_label = TxDetailLabel()
|
|
vbox_left.addWidget(self.amount_label)
|
|
|
|
fee_hbox = QHBoxLayout()
|
|
self.fee_label = TxDetailLabel()
|
|
fee_hbox.addWidget(self.fee_label)
|
|
self.fee_warning_icon = QLabel()
|
|
pixmap = QPixmap(icon_path("warning"))
|
|
pixmap_size = round(2 * char_width_in_lineedit())
|
|
pixmap = pixmap.scaled(pixmap_size, pixmap_size, Qt.KeepAspectRatio, Qt.SmoothTransformation)
|
|
self.fee_warning_icon.setPixmap(pixmap)
|
|
self.fee_warning_icon.setToolTip(_("Warning") + ": "
|
|
+ _("The fee could not be verified. Signing non-segwit inputs is risky:\n"
|
|
"if this transaction was maliciously modified before you sign,\n"
|
|
"you might end up paying a higher mining fee than displayed."))
|
|
self.fee_warning_icon.setVisible(False)
|
|
fee_hbox.addWidget(self.fee_warning_icon)
|
|
fee_hbox.addStretch(1)
|
|
vbox_left.addLayout(fee_hbox)
|
|
|
|
vbox_left.addStretch(1)
|
|
hbox_stats.addLayout(vbox_left, 50)
|
|
|
|
# vertical line separator
|
|
line_separator = QFrame()
|
|
line_separator.setFrameShape(QFrame.VLine)
|
|
line_separator.setFrameShadow(QFrame.Sunken)
|
|
line_separator.setLineWidth(1)
|
|
hbox_stats.addWidget(line_separator)
|
|
|
|
# right column
|
|
vbox_right = QVBoxLayout()
|
|
self.size_label = TxDetailLabel()
|
|
vbox_right.addWidget(self.size_label)
|
|
self.rbf_label = TxDetailLabel()
|
|
vbox_right.addWidget(self.rbf_label)
|
|
self.locktime_label = TxDetailLabel()
|
|
vbox_right.addWidget(self.locktime_label)
|
|
self.block_hash_label = TxDetailLabel(word_wrap=True)
|
|
vbox_right.addWidget(self.block_hash_label)
|
|
self.block_height_label = TxDetailLabel()
|
|
vbox_right.addWidget(self.block_height_label)
|
|
vbox_right.addStretch(1)
|
|
hbox_stats.addLayout(vbox_right, 50)
|
|
|
|
vbox.addLayout(hbox_stats)
|
|
|
|
|
|
class QTextEditWithDefaultSize(QTextEdit):
|
|
def sizeHint(self):
|
|
return QSize(0, 100)
|
|
|
|
|
|
class TxDetailLabel(QLabel):
|
|
def __init__(self, *, word_wrap=None):
|
|
super().__init__()
|
|
self.setTextInteractionFlags(Qt.TextSelectableByMouse)
|
|
if word_wrap is not None:
|
|
self.setWordWrap(word_wrap)
|