299 lines
10 KiB
Python
299 lines
10 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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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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import datetime
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import json
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import PyQt4
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from PyQt4.QtGui import *
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from PyQt4.QtCore import *
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import PyQt4.QtCore as QtCore
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from electrum import transaction
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from electrum.bitcoin import base_encode
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from electrum.i18n import _
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from electrum.plugins import run_hook
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from util import *
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dialogs = [] # Otherwise python randomly garbage collects the dialogs...
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def show_transaction(tx, parent, desc=None, prompt_if_unsaved=False):
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d = TxDialog(tx, parent, desc, prompt_if_unsaved)
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dialogs.append(d)
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d.show()
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class TxDialog(QDialog):
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def __init__(self, tx, parent, 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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self.tx = tx
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self.tx.deserialize()
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self.parent = 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.broadcast = False
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self.desc = desc
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QDialog.__init__(self)
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self.setMinimumWidth(660)
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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: self.parent.show_qrcode(str(self.tx_hash_e.text()), 'Transaction ID')
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self.tx_hash_e.addButton(":icons/qrcode.png", 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.status_label = QLabel()
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vbox.addWidget(self.status_label)
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self.tx_desc = QLabel()
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vbox.addWidget(self.tx_desc)
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self.date_label = QLabel()
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vbox.addWidget(self.date_label)
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self.amount_label = QLabel()
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vbox.addWidget(self.amount_label)
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self.fee_label = QLabel()
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vbox.addWidget(self.fee_label)
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self.add_io(vbox)
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vbox.addStretch(1)
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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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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.qr_button = b = QPushButton()
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b.setIcon(QIcon(":icons/qrcode.png"))
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b.clicked.connect(self.show_qr)
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self.copy_button = CopyButton(lambda: str(self.tx), self.parent.app)
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# Action buttons
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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.copy_button, self.qr_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.parent.broadcast_transaction(self.tx, self.desc, parent=self)
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self.broadcast = 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 and not self.broadcast
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and QMessageBox.question(
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self, _('Warning'),
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_('This transaction is not saved. Close anyway?'),
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QMessageBox.Yes | QMessageBox.No) == QMessageBox.No):
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event.ignore()
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else:
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event.accept()
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dialogs.remove(self)
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def show_qr(self):
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text = self.tx.raw.decode('hex')
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text = base_encode(text, base=43)
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try:
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self.parent.show_qrcode(text, 'Transaction')
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except Exception as e:
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self.show_message(str(e))
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def sign(self):
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def sign_done(success):
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self.sign_button.setDisabled(False)
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self.prompt_if_unsaved = False
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self.saved = False
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self.update()
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self.sign_button.setDisabled(True)
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cancelled, ret = self.parent.sign_tx(self.tx, sign_done, parent=self)
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if cancelled:
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self.sign_button.setDisabled(False)
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def save(self):
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name = 'signed_%s.txn' % (self.tx.hash()[0:8]) if self.tx.is_complete() else 'unsigned.txn'
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fileName = self.parent.getSaveFileName(_("Select where to save your signed transaction"), name, "*.txn")
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if fileName:
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with open(fileName, "w+") as f:
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f.write(json.dumps(self.tx.as_dict(), indent=4) + '\n')
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self.show_message(_("Transaction saved successfully"))
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self.saved = True
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def update(self):
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is_relevant, is_mine, v, fee = self.wallet.get_wallet_delta(self.tx)
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tx_hash = self.tx.hash()
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desc = self.desc
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time_str = None
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self.broadcast_button.hide()
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if self.tx.is_complete():
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status = _("Signed")
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if tx_hash in self.wallet.transactions.keys():
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desc = self.wallet.get_label(tx_hash)
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conf, timestamp = self.wallet.get_confirmations(tx_hash)
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if timestamp:
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time_str = datetime.datetime.fromtimestamp(timestamp).isoformat(' ')[:-3]
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else:
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time_str = _('Pending')
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status = _("%d confirmations")%conf
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else:
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self.broadcast_button.show()
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# cannot broadcast when offline
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if self.parent.network is None:
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self.broadcast_button.setEnabled(False)
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else:
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s, r = self.tx.signature_count()
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status = _("Unsigned") if s == 0 else _('Partially signed') + ' (%d/%d)'%(s,r)
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tx_hash = _('Unknown');
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if self.wallet.can_sign(self.tx):
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self.sign_button.show()
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else:
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self.sign_button.hide()
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self.tx_hash_e.setText(tx_hash)
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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:') + ' ' + status)
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if time_str is not None:
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self.date_label.setText(_("Date: %s")%time_str)
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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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# if we are not synchronized, we cannot tell
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if not self.wallet.up_to_date:
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return
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if is_relevant:
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if is_mine:
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if fee is not None:
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self.amount_label.setText(_("Amount sent:")+' %s'% self.parent.format_amount(-v+fee) + ' ' + self.parent.base_unit())
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self.fee_label.setText(_("Transaction fee")+': %s'% self.parent.format_amount(-fee) + ' ' + self.parent.base_unit())
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else:
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self.amount_label.setText(_("Amount sent:")+' %s'% self.parent.format_amount(-v) + ' ' + self.parent.base_unit())
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self.fee_label.setText(_("Transaction fee")+': '+ _("unknown"))
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else:
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self.amount_label.setText(_("Amount received:")+' %s'% self.parent.format_amount(v) + ' ' + self.parent.base_unit())
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else:
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self.amount_label.setText(_("Transaction unrelated to your wallet"))
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run_hook('transaction_dialog_update', self)
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def add_io(self, vbox):
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if self.tx.locktime > 0:
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vbox.addWidget(QLabel("LockTime: %d\n" % self.tx.locktime))
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vbox.addWidget(QLabel(_("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(QColor("lightgreen")))
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rec.setToolTip(_("Wallet receive address"))
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chg = QTextCharFormat()
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chg.setBackground(QBrush(QColor("yellow")))
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chg.setToolTip(_("Wallet change address"))
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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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return ext
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def format_amount(amt):
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return self.parent.format_amount(amt, whitespaces = True)
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i_text = QTextEdit()
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i_text.setFont(QFont(MONOSPACE_FONT))
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i_text.setReadOnly(True)
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i_text.setMaximumHeight(100)
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cursor = i_text.textCursor()
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for x in self.tx.inputs:
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if x.get('is_coinbase'):
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cursor.insertText('coinbase')
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else:
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prevout_hash = x.get('prevout_hash')
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prevout_n = x.get('prevout_n')
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cursor.insertText(prevout_hash[0:8] + '...', ext)
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cursor.insertText(prevout_hash[-8:] + ":%-4d " % prevout_n, ext)
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addr = x.get('address')
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if addr == "(pubkey)":
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_addr = self.wallet.find_pay_to_pubkey_address(prevout_hash, prevout_n)
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if _addr:
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addr = _addr
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if addr is None:
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addr = _('unknown')
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cursor.insertText(addr, text_format(addr))
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if x.get('value'):
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cursor.insertText(format_amount(x['value']), ext)
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cursor.insertBlock()
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vbox.addWidget(i_text)
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vbox.addWidget(QLabel(_("Outputs") + ' (%d)'%len(self.tx.outputs)))
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o_text = QTextEdit()
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o_text.setFont(QFont(MONOSPACE_FONT))
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o_text.setReadOnly(True)
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o_text.setMaximumHeight(100)
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cursor = o_text.textCursor()
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for addr, v in self.tx.get_outputs():
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cursor.insertText(addr, text_format(addr))
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if v is not None:
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cursor.insertText('\t', ext)
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cursor.insertText(format_amount(v), ext)
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cursor.insertBlock()
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vbox.addWidget(o_text)
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def show_message(self, msg):
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QMessageBox.information(self, _('Message'), msg, _('OK'))
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