#!/usr/bin/env python
#
# Electrum - lightweight Bitcoin client
# Copyright (C) 2012 thomasv@gitorious
#
# Permission is hereby granted, free of charge, to any person
# obtaining a copy of this software and associated documentation files
# (the "Software"), to deal in the Software without restriction,
# including without limitation the rights to use, copy, modify, merge,
# publish, distribute, sublicense, and/or sell copies of the Software,
# and to permit persons to whom the Software is furnished to do so,
# subject to the following conditions:
#
# The above copyright notice and this permission notice shall be
# included in all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
# BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
# ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
# CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
# SOFTWARE.
import copy
import datetime
import json
import PyQt5
from PyQt5.QtGui import *
from PyQt5.QtCore import *
import PyQt5.QtCore as QtCore
from electrum import transaction
from electrum.bitcoin import base_encode
from electrum.i18n import _
from electrum.plugins import run_hook
from electrum.util import bfh
from .util import *
dialogs = [] # Otherwise python randomly garbage collects the dialogs...
def show_transaction(tx, parent, desc=None, prompt_if_unsaved=False):
d = TxDialog(tx, parent, desc, prompt_if_unsaved)
dialogs.append(d)
d.show()
class TxDialog(QDialog, MessageBoxMixin):
def __init__(self, tx, parent, desc, prompt_if_unsaved):
'''Transactions in the wallet will show their description.
Pass desc to give a description for txs not yet in the wallet.
'''
# We want to be a top-level window
QDialog.__init__(self, parent=None)
# Take a copy; it might get updated in the main window by
# e.g. the FX plugin. If this happens during or after a long
# sign operation the signatures are lost.
self.tx = copy.deepcopy(tx)
self.tx.deserialize()
self.main_window = parent
self.wallet = parent.wallet
self.prompt_if_unsaved = prompt_if_unsaved
self.saved = False
self.desc = desc
self.setMinimumWidth(750)
self.setWindowTitle(_("Transaction"))
vbox = QVBoxLayout()
self.setLayout(vbox)
vbox.addWidget(QLabel(_("Transaction ID:")))
self.tx_hash_e = ButtonsLineEdit()
qr_show = lambda: parent.show_qrcode(str(self.tx_hash_e.text()), 'Transaction ID', parent=self)
self.tx_hash_e.addButton(":icons/qrcode.png", qr_show, _("Show as QR code"))
self.tx_hash_e.setReadOnly(True)
vbox.addWidget(self.tx_hash_e)
self.tx_desc = QLabel()
vbox.addWidget(self.tx_desc)
self.status_label = QLabel()
vbox.addWidget(self.status_label)
self.date_label = QLabel()
vbox.addWidget(self.date_label)
self.amount_label = QLabel()
vbox.addWidget(self.amount_label)
self.size_label = QLabel()
vbox.addWidget(self.size_label)
self.fee_label = QLabel()
vbox.addWidget(self.fee_label)
self.add_io(vbox)
vbox.addStretch(1)
self.sign_button = b = QPushButton(_("Sign"))
b.clicked.connect(self.sign)
self.broadcast_button = b = QPushButton(_("Broadcast"))
b.clicked.connect(self.do_broadcast)
self.save_button = b = QPushButton(_("Save"))
b.clicked.connect(self.save)
self.cancel_button = b = QPushButton(_("Close"))
b.clicked.connect(self.close)
b.setDefault(True)
self.qr_button = b = QPushButton()
b.setIcon(QIcon(":icons/qrcode.png"))
b.clicked.connect(self.show_qr)
self.copy_button = CopyButton(lambda: str(self.tx), parent.app)
# Action buttons
self.buttons = [self.sign_button, self.broadcast_button, self.cancel_button]
# Transaction sharing buttons
self.sharing_buttons = [self.copy_button, self.qr_button, self.save_button]
run_hook('transaction_dialog', self)
hbox = QHBoxLayout()
hbox.addLayout(Buttons(*self.sharing_buttons))
hbox.addStretch(1)
hbox.addLayout(Buttons(*self.buttons))
vbox.addLayout(hbox)
self.update()
def do_broadcast(self):
self.main_window.push_top_level_window(self)
try:
self.main_window.broadcast_transaction(self.tx, self.desc)
finally:
self.main_window.pop_top_level_window(self)
self.saved = True
self.update()
def closeEvent(self, event):
if (self.prompt_if_unsaved and not self.saved
and not self.question(_('This transaction is not saved. Close anyway?'), title=_("Warning"))):
event.ignore()
else:
event.accept()
dialogs.remove(self)
def show_qr(self):
text = bfh(str(self.tx))
text = base_encode(text, base=43)
try:
self.main_window.show_qrcode(text, 'Transaction', parent=self)
except Exception as e:
self.show_message(str(e))
def sign(self):
def sign_done(success):
if success:
self.prompt_if_unsaved = True
self.saved = False
self.update()
self.main_window.pop_top_level_window(self)
self.sign_button.setDisabled(True)
self.main_window.push_top_level_window(self)
self.main_window.sign_tx(self.tx, sign_done)
def save(self):
name = 'signed_%s.txn' % (self.tx.hash()[0:8]) if self.tx.is_complete() else 'unsigned.txn'
fileName = self.main_window.getSaveFileName(_("Select where to save your signed transaction"), name, "*.txn")
if fileName:
with open(fileName, "w+") as f:
f.write(json.dumps(self.tx.as_dict(), indent=4) + '\n')
self.show_message(_("Transaction saved successfully"))
self.saved = True
def update(self):
desc = self.desc
base_unit = self.main_window.base_unit()
format_amount = self.main_window.format_amount
tx_hash, status, label, can_broadcast, can_rbf, amount, fee, height, conf, timestamp, exp_n = self.wallet.get_tx_info(self.tx)
size = self.tx.estimated_size()
self.broadcast_button.setEnabled(can_broadcast)
self.sign_button.setEnabled(self.wallet.can_sign(self.tx))
self.tx_hash_e.setText(tx_hash or _('Unknown'))
if desc is None:
self.tx_desc.hide()
else:
self.tx_desc.setText(_("Description") + ': ' + desc)
self.tx_desc.show()
self.status_label.setText(_('Status:') + ' ' + status)
if timestamp:
time_str = datetime.datetime.fromtimestamp(timestamp).isoformat(' ')[:-3]
self.date_label.setText(_("Date: %s")%time_str)
self.date_label.show()
elif exp_n:
text = '%d blocks'%(exp_n) if exp_n > 0 else _('unknown (low fee)')
self.date_label.setText(_('Expected confirmation time') + ': ' + text)
self.date_label.show()
else:
self.date_label.hide()
if amount is None:
amount_str = _("Transaction unrelated to your wallet")
elif amount > 0:
amount_str = _("Amount received:") + ' %s'% format_amount(amount) + ' ' + base_unit
else:
amount_str = _("Amount sent:") + ' %s'% format_amount(-amount) + ' ' + base_unit
size_str = _("Size:") + ' %d bytes'% size
fee_str = _("Fee") + ': %s'% (format_amount(fee) + ' ' + base_unit if fee is not None else _('unknown'))
if fee is not None:
fee_str += ' ( %s ) '% self.main_window.format_fee_rate(fee/size*1000)
self.amount_label.setText(amount_str)
self.fee_label.setText(fee_str)
self.size_label.setText(size_str)
run_hook('transaction_dialog_update', self)
def add_io(self, vbox):
if self.tx.locktime > 0:
vbox.addWidget(QLabel("LockTime: %d\n" % self.tx.locktime))
vbox.addWidget(QLabel(_("Inputs") + ' (%d)'%len(self.tx.inputs())))
ext = QTextCharFormat()
rec = QTextCharFormat()
rec.setBackground(QBrush(ColorScheme.GREEN.as_color(background=True)))
rec.setToolTip(_("Wallet receive address"))
chg = QTextCharFormat()
chg.setBackground(QBrush(QColor("yellow")))
chg.setToolTip(_("Wallet change address"))
def text_format(addr):
if self.wallet.is_mine(addr):
return chg if self.wallet.is_change(addr) else rec
return ext
def format_amount(amt):
return self.main_window.format_amount(amt, whitespaces = True)
i_text = QTextEdit()
i_text.setFont(QFont(MONOSPACE_FONT))
i_text.setReadOnly(True)
i_text.setMaximumHeight(100)
cursor = i_text.textCursor()
for x in self.tx.inputs():
if x['type'] == 'coinbase':
cursor.insertText('coinbase')
else:
prevout_hash = x.get('prevout_hash')
prevout_n = x.get('prevout_n')
cursor.insertText(prevout_hash[0:8] + '...', ext)
cursor.insertText(prevout_hash[-8:] + ":%-4d " % prevout_n, ext)
addr = x.get('address')
if addr == "(pubkey)":
_addr = self.wallet.find_pay_to_pubkey_address(prevout_hash, prevout_n)
if _addr:
addr = _addr
if addr is None:
addr = _('unknown')
cursor.insertText(addr, text_format(addr))
if x.get('value'):
cursor.insertText(format_amount(x['value']), ext)
cursor.insertBlock()
vbox.addWidget(i_text)
vbox.addWidget(QLabel(_("Outputs") + ' (%d)'%len(self.tx.outputs())))
o_text = QTextEdit()
o_text.setFont(QFont(MONOSPACE_FONT))
o_text.setReadOnly(True)
o_text.setMaximumHeight(100)
cursor = o_text.textCursor()
for addr, v in self.tx.get_outputs():
cursor.insertText(addr, text_format(addr))
if v is not None:
cursor.insertText('\t', ext)
cursor.insertText(format_amount(v), ext)
cursor.insertBlock()
vbox.addWidget(o_text)