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()
 100         b.setIcon(QIcon(":icons/qrcode.png"))
 101         b.clicked.connect(self.show_qr)
 102         buttons.insertWidget(1,b)
 103
 104         run_hook('transaction_dialog', self)
 105
 106         self.update()
 107
 108
 109     def show_qr(self):
 110         text = self.tx.raw.decode('hex')
 111         try:
 112             self.parent.show_qrcode(text, 'Transaction')
 113         except Exception as e:
 114             self.show_message(str(e))
 115
 116
 117     def sign(self):
 118         self.parent.sign_raw_transaction(self.tx)
 119         self.update()
 120
 121
 122     def save(self):
 123         name = 'signed_%s.txn' % (self.tx.hash()[0:8]) if self.tx.is_complete() else 'unsigned.txn'
 124         fileName = self.parent.getSaveFileName(_("Select where to save your signed transaction"), name, "*.txn")
 125         if fileName:
 126             with open(fileName, "w+") as f:
 127                 f.write(json.dumps(self.tx.as_dict(),indent=4) + '\n')
 128             self.show_message(_("Transaction saved successfully"))
 129
 130
 131
 132     def update(self):
 133
 134         is_relevant, is_mine, v, fee = self.wallet.get_tx_value(self.tx)
 135         if self.wallet.can_sign(self.tx):
 136             self.sign_button.show()
 137         else:
 138             self.sign_button.hide()
 139
 140         if self.tx.is_complete():
 141             status = _("Signed")
 142             tx_hash = self.tx.hash()
 143
 144             if tx_hash in self.wallet.transactions.keys():
 145                 conf, timestamp = self.wallet.verifier.get_confirmations(tx_hash)
 146                 if timestamp:
 147                     time_str = datetime.datetime.fromtimestamp(timestamp).isoformat(' ')[:-3]
 148                 else:
 149                     time_str = 'pending'
 150                 status = _("%d confirmations")%conf
 151                 self.broadcast_button.hide()
 152             else:
 153                 time_str = None
 154                 conf = 0
 155                 self.broadcast_button.show()
 156         else:
 157             s, r = self.tx.signature_count()
 158             status = _("Unsigned") if s == 0 else _('Partially signed (%d/%d)'%(s,r))
 159             time_str = None
 160             self.broadcast_button.hide()
 161             tx_hash = 'unknown'
 162
 163         self.tx_hash_e.setText(tx_hash)
 164         self.status_label.setText(_('Status:') + ' ' + status)
 165
 166         if time_str is not None:
 167             self.date_label.setText(_("Date: %s")%time_str)
 168             self.date_label.show()
 169         else:
 170             self.date_label.hide()
 171
 172         # if we are not synchronized, we cannot tell
 173         if self.parent.network is None or not self.parent.network.is_running() or not self.parent.network.is_connected():
 174             return
 175         if not self.wallet.up_to_date:
 176             return
 177
 178         if is_relevant:
 179             if is_mine:
 180                 if fee is not None:
 181                     self.amount_label.setText(_("Amount sent:")+' %s'% self.parent.format_amount(v-fee) + ' ' + self.parent.base_unit())
 182                     self.fee_label.setText(_("Transaction fee")+': %s'% self.parent.format_amount(fee) + ' ' + self.parent.base_unit())
 183                 else:
 184                     self.amount_label.setText(_("Amount sent:")+' %s'% self.parent.format_amount(v) + ' ' + self.parent.base_unit())
 185                     self.fee_label.setText(_("Transaction fee")+': '+ _("unknown"))
 186             else:
 187                 self.amount_label.setText(_("Amount received:")+' %s'% self.parent.format_amount(v) + ' ' + self.parent.base_unit())
 188         else:
 189             self.amount_label.setText(_("Transaction unrelated to your wallet"))
 190
 191         run_hook('transaction_dialog_update', self)
 192
 193
 194
 195     def add_io(self, vbox):
 196
 197         if self.tx.locktime > 0:
 198             vbox.addWidget(QLabel("LockTime: %d\n" % self.tx.locktime))
 199
 200         vbox.addWidget(QLabel(_("Inputs")))
 201         def format_input(x):
 202             if x.get('is_coinbase'):
 203                 return 'coinbase'
 204             else:
 205                 _hash = x.get('prevout_hash')
 206                 return _hash[0:16] + '...' + _hash[-8:] + ":%d"%x.get('prevout_n') + u'\t' + "%s"%x.get('address')
 207         lines = map(format_input, self.tx.inputs )
 208         i_text = QTextEdit()
 209         i_text.setText('\n'.join(lines))
 210         i_text.setReadOnly(True)
 211         i_text.setMaximumHeight(100)
 212         vbox.addWidget(i_text)
 213
 214         vbox.addWidget(QLabel(_("Outputs")))
 215         lines = map(lambda x: x[0] + u'\t\t' + self.parent.format_amount(x[1]), self.tx.get_outputs())
 216         o_text = QTextEdit()
 217         o_text.setText('\n'.join(lines))
 218         o_text.setReadOnly(True)
 219         o_text.setMaximumHeight(100)
 220         vbox.addWidget(o_text)
 221
 222
 223
 224     def show_message(self, msg):
 225         QMessageBox.information(self, _('Message'), msg, _('OK'))
 226
 227
 228
 229