Browse Source
- Output selection belongs in the Send tab. - Tx finalization is performed in a confirmation dialog (ConfirmTxDialog or PreviewTxDialog) - the fee slider is shown in the confirmation dialog - coin control works by selecting items in the coins tab - user can save invoices and pay them later - ConfirmTxDialog is used when opening channels and sweeping keysln-negative-red
ThomasV
5 years ago
7 changed files with 655 additions and 502 deletions
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#!/usr/bin/env python |
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# |
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# Electrum - lightweight Bitcoin client |
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# Copyright (2019) The Electrum Developers |
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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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|
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from typing import TYPE_CHECKING |
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import copy |
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|
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from PyQt5.QtCore import Qt, QSize |
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from PyQt5.QtGui import QTextCharFormat, QBrush, QFont |
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from PyQt5.QtWidgets import QHBoxLayout, QVBoxLayout, QLabel, QGridLayout, QPushButton, QWidget, QTextEdit, QLineEdit, QCheckBox |
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|
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from electrum.i18n import _ |
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from electrum.util import quantize_feerate, NotEnoughFunds, NoDynamicFeeEstimates |
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from electrum.plugin import run_hook |
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from electrum.transaction import TxOutput |
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from electrum.simple_config import SimpleConfig, FEERATE_WARNING_HIGH_FEE |
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from electrum.wallet import InternalAddressCorruption |
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|
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from .util import WindowModalDialog, ButtonsLineEdit, ColorScheme, Buttons, CloseButton, FromList, HelpLabel, read_QIcon, char_width_in_lineedit, Buttons, CancelButton, OkButton |
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from .util import MONOSPACE_FONT |
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|
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from .fee_slider import FeeSlider |
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from .history_list import HistoryList, HistoryModel |
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from .qrtextedit import ShowQRTextEdit |
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if TYPE_CHECKING: |
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from .main_window import ElectrumWindow |
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class TxEditor: |
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def __init__(self, window, inputs, outputs, external_keypairs): |
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self.main_window = window |
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self.outputs = outputs |
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self.get_coins = inputs |
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self.tx = None |
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self.config = window.config |
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self.wallet = window.wallet |
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self.external_keypairs = external_keypairs |
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self.not_enough_funds = False |
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self.no_dynfee_estimates = False |
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self.needs_update = False |
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self.password_required = self.wallet.has_keystore_encryption() and not external_keypairs |
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self.main_window.gui_object.timer.timeout.connect(self.timer_actions) |
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|
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def timer_actions(self): |
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if self.needs_update: |
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self.update_tx() |
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self.update() |
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self.needs_update = False |
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def fee_slider_callback(self, dyn, pos, fee_rate): |
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if dyn: |
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if self.config.use_mempool_fees(): |
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self.config.set_key('depth_level', pos, False) |
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else: |
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self.config.set_key('fee_level', pos, False) |
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else: |
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self.config.set_key('fee_per_kb', fee_rate, False) |
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self.needs_update = True |
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def get_fee_estimator(self): |
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return None |
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def update_tx(self): |
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fee_estimator = self.get_fee_estimator() |
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is_sweep = bool(self.external_keypairs) |
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coins = self.get_coins() |
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# deepcopy outputs because '!' is converted to number |
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outputs = copy.deepcopy(self.outputs) |
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make_tx = lambda fee_est: self.wallet.make_unsigned_transaction( |
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coins=coins, |
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outputs=outputs, |
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fee=fee_est, |
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is_sweep=is_sweep) |
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try: |
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self.tx = make_tx(fee_estimator) |
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self.not_enough_funds = False |
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self.no_dynfee_estimates = False |
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except NotEnoughFunds: |
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self.not_enough_funds = True |
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self.tx = None |
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return |
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except NoDynamicFeeEstimates: |
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self.no_dynfee_estimates = True |
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self.tx = None |
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try: |
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self.tx = make_tx(0) |
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except BaseException: |
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return |
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except InternalAddressCorruption as e: |
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self.tx = None |
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self.main_window.show_error(str(e)) |
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raise |
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except BaseException as e: |
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self.tx = None |
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self.main_window.logger.exception('') |
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self.show_message(str(e)) |
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return |
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use_rbf = bool(self.config.get('use_rbf', True)) |
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if use_rbf: |
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self.tx.set_rbf(True) |
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class ConfirmTxDialog(TxEditor, WindowModalDialog): |
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# set fee and return password (after pw check) |
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def __init__(self, window: 'ElectrumWindow', inputs, outputs, external_keypairs): |
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TxEditor.__init__(self, window, inputs, outputs, external_keypairs) |
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WindowModalDialog.__init__(self, window, _("Confirm Transaction")) |
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vbox = QVBoxLayout() |
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self.setLayout(vbox) |
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grid = QGridLayout() |
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vbox.addLayout(grid) |
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self.amount_label = QLabel('') |
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grid.addWidget(QLabel(_("Amount to be sent") + ": "), 0, 0) |
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grid.addWidget(self.amount_label, 0, 1) |
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msg = _('Bitcoin transactions are in general not free. A transaction fee is paid by the sender of the funds.') + '\n\n'\ |
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+ _('The amount of fee can be decided freely by the sender. However, transactions with low fees take more time to be processed.') + '\n\n'\ |
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+ _('A suggested fee is automatically added to this field. You may override it. The suggested fee increases with the size of the transaction.') |
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self.fee_label = QLabel('') |
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grid.addWidget(HelpLabel(_("Mining fee") + ": ", msg), 1, 0) |
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grid.addWidget(self.fee_label, 1, 1) |
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self.extra_fee_label = QLabel(_("Additional fees") + ": ") |
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self.extra_fee_label.setVisible(False) |
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self.extra_fee_value = QLabel('') |
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self.extra_fee_value.setVisible(False) |
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grid.addWidget(self.extra_fee_label, 2, 0) |
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grid.addWidget(self.extra_fee_value, 2, 1) |
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self.fee_slider = FeeSlider(self, self.config, self.fee_slider_callback) |
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grid.addWidget(self.fee_slider, 5, 1) |
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self.message_label = QLabel(self.default_message()) |
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grid.addWidget(self.message_label, 6, 0, 1, -1) |
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self.pw_label = QLabel(_('Password')) |
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self.pw_label.setVisible(self.password_required) |
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self.pw = QLineEdit() |
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self.pw.setEchoMode(2) |
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self.pw.setVisible(self.password_required) |
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grid.addWidget(self.pw_label, 8, 0) |
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grid.addWidget(self.pw, 8, 1, 1, -1) |
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vbox.addLayout(grid) |
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self.preview_button = QPushButton(_('Advanced')) |
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self.preview_button.clicked.connect(self.on_preview) |
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grid.addWidget(self.preview_button, 0, 2) |
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self.send_button = QPushButton(_('Send')) |
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self.send_button.clicked.connect(self.on_send) |
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self.send_button.setDefault(True) |
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vbox.addLayout(Buttons(CancelButton(self), self.send_button)) |
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self.update_tx() |
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self.update() |
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self.is_send = False |
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def default_message(self): |
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return _('Enter your password to proceed') if self.password_required else _('Click Send to proceed') |
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def on_preview(self): |
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self.accept() |
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def run(self): |
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cancelled = not self.exec_() |
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password = self.pw.text() or None |
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return cancelled, self.is_send, password, self.tx |
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def on_send(self): |
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password = self.pw.text() or None |
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if self.password_required: |
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if password is None: |
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return |
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try: |
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self.wallet.check_password(password) |
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except Exception as e: |
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self.main_window.show_error(str(e), parent=self) |
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return |
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self.is_send = True |
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self.accept() |
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def disable(self, reason): |
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self.message_label.setStyleSheet(ColorScheme.RED.as_stylesheet()) |
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self.message_label.setText(reason) |
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self.pw.setEnabled(False) |
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self.send_button.setEnabled(False) |
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def enable(self): |
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self.message_label.setStyleSheet(None) |
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self.message_label.setText(self.default_message()) |
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self.pw.setEnabled(True) |
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self.send_button.setEnabled(True) |
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def update(self): |
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tx = self.tx |
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output_values = [x.value for x in self.outputs] |
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is_max = '!' in output_values |
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amount = tx.output_value() if is_max else sum(output_values) |
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self.amount_label.setText(self.main_window.format_amount_and_units(amount)) |
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if self.not_enough_funds: |
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text = _("Not enough funds") |
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c, u, x = self.wallet.get_frozen_balance() |
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if c+u+x: |
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text += " ({} {} {})".format( |
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self.main_window.format_amount(c + u + x).strip(), self.main_window.base_unit(), _("are frozen") |
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) |
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self.disable(text) |
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return |
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if not tx: |
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return |
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fee = tx.get_fee() |
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self.fee_label.setText(self.main_window.format_amount_and_units(fee)) |
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x_fee = run_hook('get_tx_extra_fee', self.wallet, tx) |
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if x_fee: |
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x_fee_address, x_fee_amount = x_fee |
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self.extra_fee_label.setVisible(True) |
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self.extra_fee_value.setVisible(True) |
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self.extra_fee_value.setText(self.main_window.format_amount_and_units(x_fee_amount)) |
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feerate_warning = FEERATE_WARNING_HIGH_FEE |
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low_fee = fee < self.wallet.relayfee() * tx.estimated_size() / 1000 |
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high_fee = fee > feerate_warning * tx.estimated_size() / 1000 |
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if low_fee: |
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msg = '\n'.join([ |
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_("This transaction requires a higher fee, or it will not be propagated by your current server"), |
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_("Try to raise your transaction fee, or use a server with a lower relay fee.") |
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]) |
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self.disable(msg) |
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elif high_fee: |
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self.disable(_('Warning') + ': ' + _("The fee for this transaction seems unusually high.")) |
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else: |
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self.enable() |
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