gui/qt/transaction_dialog.py

   1 #!/usr/bin/env python
   2 #
   3 # Electrum - lightweight Bitcoin client
   4 # Copyright (C) 2012 thomasv@gitorious
   5 #
   6 # This program is free software: you can redistribute it and/or modify
   7 # it under the terms of the GNU General Public License as published by
   8 # the Free Software Foundation, either version 3 of the License, or
   9 # (at your option) any later version.
  10 #
  11 # This program is distributed in the hope that it will be useful,
  12 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  14 # GNU General Public License for more details.
  15 #
  16 # You should have received a copy of the GNU General Public License
  17 # along with this program. If not, see <http://www.gnu.org/licenses/>.
  18
  19 import sys, time, datetime, re, threading
  20 from electrum.i18n import _, set_language
  21 from electrum.util import print_error, print_msg
  22 import os.path, json, ast, traceback
  23 import shutil
  24 import StringIO
  25
  26
  27 try:
  28     import PyQt4
  29 except Exception:
  30     sys.exit("Error: Could not import PyQt4 on Linux systems, you may try 'sudo apt-get install python-qt4'")
  31
  32 from PyQt4.QtGui import *
  33 from PyQt4.QtCore import *
  34 import PyQt4.QtCore as QtCore
  35
  36 from electrum import transaction
  37 from electrum.plugins import run_hook
  38
  39 from util import MyTreeWidget
  40
  41 class TxDialog(QDialog):
  42
  43     def __init__(self, tx, parent):
  44         self.tx = tx
  45         tx_dict = tx.as_dict()
  46         self.parent = parent
  47         self.wallet = parent.wallet
  48
  49         QDialog.__init__(self)
  50         self.setMinimumWidth(600)
  51         self.setWindowTitle(_("Transaction"))
  52         self.setModal(1)
  53
  54         vbox = QVBoxLayout()
  55         self.setLayout(vbox)
  56
  57         vbox.addWidget(QLabel(_("Transaction ID:")))
  58         self.tx_hash_e  = QLineEdit()
  59         self.tx_hash_e.setReadOnly(True)
  60         vbox.addWidget(self.tx_hash_e)
  61         self.status_label = QLabel()
  62         vbox.addWidget(self.status_label)
  63
  64         self.date_label = QLabel()
  65         vbox.addWidget(self.date_label)
  66         self.amount_label = QLabel()
  67         vbox.addWidget(self.amount_label)
  68         self.fee_label = QLabel()
  69         vbox.addWidget(self.fee_label)
  70
  71         self.add_io(vbox)
  72
  73         vbox.addStretch(1)
  74
  75         self.buttons = buttons = QHBoxLayout()
  76         vbox.addLayout( buttons )
  77
  78         buttons.addStretch(1)
  79
  80         self.sign_button = b = QPushButton(_("Sign"))
  81         b.clicked.connect(self.sign)
  82         buttons.addWidget(b)
  83
  84         self.broadcast_button = b = QPushButton(_("Broadcast"))
  85         b.clicked.connect(lambda: self.parent.broadcast_transaction(self.tx))
  86
  87         b.hide()
  88         buttons.addWidget(b)
  89
  90         self.save_button = b = QPushButton(_("Save"))
  91         b.clicked.connect(self.save)
  92         buttons.addWidget(b)
  93
  94         cancelButton = QPushButton(_("Close"))
  95         cancelButton.clicked.connect(lambda: self.done(0))
  96         buttons.addWidget(cancelButton)
  97         cancelButton.setDefault(True)
  98
  99         b = QPushButton(_("Show QR code"))
 100         b.clicked.connect(self.show_qr)
 101         buttons.insertWidget(1,b)
 102         self.update()
 103
 104         run_hook('transaction_dialog', self)
 105
 106
 107     def show_qr(self):
 108         text = self.tx.raw.decode('hex')
 109         try:
 110             self.parent.show_qrcode(text, 'Transaction')
 111         except Exception as e:
 112             self.show_message(str(e))
 113
 114
 115     def sign(self):
 116         self.parent.sign_raw_transaction(self.tx)
 117         self.update()
 118
 119
 120     def save(self):
 121         name = 'signed_%s.txn' % (self.tx.hash()[0:8]) if self.tx.is_complete() else 'unsigned.txn'
 122         fileName = self.parent.getSaveFileName(_("Select where to save your signed transaction"), name, "*.txn")
 123         if fileName:
 124             with open(fileName, "w+") as f:
 125                 f.write(json.dumps(self.tx.as_dict(),indent=4) + '\n')
 126             self.show_message(_("Transaction saved successfully"))
 127
 128
 129
 130     def update(self):
 131
 132         is_relevant, is_mine, v, fee = self.wallet.get_tx_value(self.tx)
 133
 134         if self.tx.is_complete():
 135             status = _("Signed")
 136             self.sign_button.hide()
 137             tx_hash = self.tx.hash()
 138
 139             if tx_hash in self.wallet.transactions.keys():
 140                 conf, timestamp = self.wallet.verifier.get_confirmations(tx_hash)
 141                 if timestamp:
 142                     time_str = datetime.datetime.fromtimestamp(timestamp).isoformat(' ')[:-3]
 143                 else:
 144                     time_str = 'pending'
 145                 status = _("%d confirmations")%conf
 146                 self.broadcast_button.hide()
 147             else:
 148                 time_str = None
 149                 conf = 0
 150                 self.broadcast_button.show()
 151         else:
 152             s, r = self.tx.signature_count()
 153             status = _("Unsigned") if s == 0 else _('Partially signed (%d/%d)'%(s,r))
 154             time_str = None
 155             if not self.wallet.is_watching_only():
 156                 self.sign_button.show()
 157             else:
 158                 self.sign_button.hide()
 159             self.broadcast_button.hide()
 160             tx_hash = 'unknown'
 161
 162         self.tx_hash_e.setText(tx_hash)
 163         self.status_label.setText(_('Status:') + ' ' + status)
 164
 165         if time_str is not None:
 166             self.date_label.setText(_("Date: %s")%time_str)
 167             self.date_label.show()
 168         else:
 169             self.date_label.hide()
 170
 171         # if we are not synchronized, we cannot tell
 172         if self.parent.network is None or not self.parent.network.is_running() or not self.parent.network.is_connected():
 173             return
 174         if not self.wallet.up_to_date:
 175             return
 176
 177         if is_relevant:
 178             if is_mine:
 179                 if fee is not None:
 180                     self.amount_label.setText(_("Amount sent:")+' %s'% self.parent.format_amount(v-fee) + ' ' + self.parent.base_unit())
 181                     self.fee_label.setText(_("Transaction fee")+': %s'% self.parent.format_amount(fee) + ' ' + self.parent.base_unit())
 182                 else:
 183                     self.amount_label.setText(_("Amount sent:")+' %s'% self.parent.format_amount(v) + ' ' + self.parent.base_unit())
 184                     self.fee_label.setText(_("Transaction fee")+': '+ _("unknown"))
 185             else:
 186                 self.amount_label.setText(_("Amount received:")+' %s'% self.parent.format_amount(v) + ' ' + self.parent.base_unit())
 187         else:
 188             self.amount_label.setText(_("Transaction unrelated to your wallet"))
 189
 190
 191
 192     def add_io(self, vbox):
 193
 194         if self.tx.locktime > 0:
 195             vbox.addWidget(QLabel("LockTime: %d\n" % self.tx.locktime))
 196
 197         vbox.addWidget(QLabel(_("Inputs")))
 198         def format_input(x):
 199             if x.get('is_coinbase'):
 200                 return 'coinbase'
 201             else:
 202                 _hash = x.get('prevout_hash')
 203                 return _hash[0:16] + '...' + _hash[-8:] + ":%d"%x.get('prevout_n') + u'\t' + "%s"%x.get('address')
 204         lines = map(format_input, self.tx.inputs )
 205         i_text = QTextEdit()
 206         i_text.setText('\n'.join(lines))
 207         i_text.setReadOnly(True)
 208         i_text.setMaximumHeight(100)
 209         vbox.addWidget(i_text)
 210
 211         vbox.addWidget(QLabel(_("Outputs")))
 212         lines = map(lambda x: x[0] + u'\t\t' + self.parent.format_amount(x[1]), self.tx.outputs)
 213         o_text = QTextEdit()
 214         o_text.setText('\n'.join(lines))
 215         o_text.setReadOnly(True)
 216         o_text.setMaximumHeight(100)
 217         vbox.addWidget(o_text)
 218
 219
 220
 221     def show_message(self, msg):
 222         QMessageBox.information(self, _('Message'), msg, _('OK'))
 223
 224
 225
 226