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 util import MyTreeWidget
  38
  39 class TxDialog(QDialog):
  40
  41     def __init__(self, tx, parent):
  42         self.tx = tx
  43         tx_dict = tx.as_dict()
  44         self.parent = parent
  45         self.wallet = parent.wallet
  46
  47         QDialog.__init__(self)
  48         self.setMinimumWidth(600)
  49         self.setWindowTitle(_("Transaction"))
  50         self.setModal(1)
  51
  52         vbox = QVBoxLayout()
  53         self.setLayout(vbox)
  54
  55         vbox.addWidget(QLabel(_("Transaction ID:")))
  56         self.tx_hash_e  = QLineEdit()
  57         self.tx_hash_e.setReadOnly(True)
  58         vbox.addWidget(self.tx_hash_e)
  59         self.status_label = QLabel()
  60         vbox.addWidget(self.status_label)
  61
  62         self.date_label = QLabel()
  63         vbox.addWidget(self.date_label)
  64         self.amount_label = QLabel()
  65         vbox.addWidget(self.amount_label)
  66         self.fee_label = QLabel()
  67         vbox.addWidget(self.fee_label)
  68
  69         self.add_io(vbox)
  70
  71         vbox.addStretch(1)
  72
  73         buttons = QHBoxLayout()
  74         vbox.addLayout( buttons )
  75
  76         buttons.addStretch(1)
  77
  78         self.sign_button = b = QPushButton(_("Sign"))
  79         b.clicked.connect(self.sign)
  80         buttons.addWidget(b)
  81
  82         self.broadcast_button = b = QPushButton(_("Broadcast"))
  83         b.clicked.connect(lambda: self.parent.broadcast_transaction(self.tx))
  84
  85         b.hide()
  86         buttons.addWidget(b)
  87
  88         self.save_button = b = QPushButton(_("Save"))
  89         b.clicked.connect(self.save)
  90         buttons.addWidget(b)
  91
  92         cancelButton = QPushButton(_("Close"))
  93         cancelButton.clicked.connect(lambda: self.done(0))
  94         buttons.addWidget(cancelButton)
  95         cancelButton.setDefault(True)
  96
  97         self.update()
  98
  99
 100
 101
 102     def sign(self):
 103         tx_dict = self.tx.as_dict()
 104         input_info = json.loads(tx_dict["input_info"])
 105         self.parent.sign_raw_transaction(self.tx, input_info)
 106         self.update()
 107
 108
 109     def save(self):
 110         name = 'signed_%s.txn' % (self.tx.hash()[0:8]) if self.tx.is_complete() else 'unsigned.txn'
 111         fileName = self.parent.getSaveFileName(_("Select where to save your signed transaction"), name, "*.txn")
 112         if fileName:
 113             with open(fileName, "w+") as f:
 114                 f.write(json.dumps(self.tx.as_dict(),indent=4) + '\n')
 115             self.show_message(_("Transaction saved successfully"))
 116
 117
 118
 119     def update(self):
 120
 121         is_relevant, is_mine, v, fee = self.wallet.get_tx_value(self.tx)
 122
 123         if self.tx.is_complete():
 124             status = _("Status: Signed")
 125             self.sign_button.hide()
 126             tx_hash = self.tx.hash()
 127
 128             if tx_hash in self.wallet.transactions.keys():
 129                 conf, timestamp = self.wallet.verifier.get_confirmations(tx_hash)
 130                 if timestamp:
 131                     time_str = datetime.datetime.fromtimestamp(timestamp).isoformat(' ')[:-3]
 132                 else:
 133                     time_str = 'pending'
 134                 status = _("Status: %d confirmations")%conf
 135                 self.broadcast_button.hide()
 136             else:
 137                 time_str = None
 138                 conf = 0
 139                 self.broadcast_button.show()
 140         else:
 141             status = _("Status: Unsigned")
 142             time_str = None
 143             if not self.wallet.is_watching_only():
 144                 self.sign_button.show()
 145             else:
 146                 self.sign_button.hide()
 147             self.broadcast_button.hide()
 148             tx_hash = 'unknown'
 149
 150         self.tx_hash_e.setText(tx_hash)
 151         self.status_label.setText(status)
 152
 153         if time_str is not None:
 154             self.date_label.setText(_("Date: %s")%time_str)
 155             self.date_label.show()
 156         else:
 157             self.date_label.hide()
 158
 159
 160         # if we are not synchronized, we cannot tell
 161         if self.parent.network is None or not self.parent.network.is_running() or not self.parent.network.is_connected():
 162             return
 163         if not self.wallet.up_to_date:
 164             return
 165
 166         if is_relevant:
 167             if is_mine:
 168                 if fee is not None:
 169                     self.amount_label.setText(_("Amount sent:")+' %s'% self.parent.format_amount(v-fee) + ' ' + self.parent.base_unit())
 170                     self.fee_label.setText(_("Transaction fee")+': %s'% self.parent.format_amount(fee) + ' ' + self.parent.base_unit())
 171                 else:
 172                     self.amount_label.setText(_("Amount sent:")+' %s'% self.parent.format_amount(v) + ' ' + self.parent.base_unit())
 173                     self.fee_label.setText(_("Transaction fee")+': '+ _("unknown"))
 174             else:
 175                 self.amount_label.setText(_("Amount received:")+' %s'% self.parent.format_amount(v) + ' ' + self.parent.base_unit())
 176         else:
 177             self.amount_label.setText(_("Transaction unrelated to your wallet"))
 178
 179
 180     def exec_menu(self, position,l):
 181         item = l.itemAt(position)
 182         if not item: return
 183         addr = unicode(item.text(0))
 184         menu = QMenu()
 185         menu.addAction(_("Copy to clipboard"), lambda: self.parent.app.clipboard().setText(addr))
 186         menu.exec_(l.viewport().mapToGlobal(position))
 187
 188
 189     def add_io(self, vbox):
 190
 191         if self.tx.locktime > 0:
 192             vbox.addWidget(QLabel("LockTime: %d\n" % self.tx.locktime))
 193
 194         vbox.addWidget(QLabel(_("Inputs")))
 195         def format_input(x):
 196             if x.get('is_coinbase'):
 197                 return 'coinbase'
 198             else:
 199                 _hash = x.get('prevout_hash')
 200                 return _hash[0:16] + '...' + _hash[-8:] + ":%d"%x.get('prevout_n') + u'\t' + "%s"%x.get('address')
 201         lines = map(format_input, self.tx.inputs )
 202         i_text = QTextEdit()
 203         i_text.setText('\n'.join(lines))
 204         i_text.setReadOnly(True)
 205         i_text.setMaximumHeight(100)
 206         vbox.addWidget(i_text)
 207
 208         vbox.addWidget(QLabel(_("Outputs")))
 209         lines = map(lambda x: x[0] + u'\t\t' + self.parent.format_amount(x[1]), self.tx.outputs)
 210         o_text = QTextEdit()
 211         o_text.setText('\n'.join(lines))
 212         o_text.setReadOnly(True)
 213         o_text.setMaximumHeight(100)
 214         vbox.addWidget(o_text)
 215
 216
 217
 218     def show_message(self, msg):
 219         QMessageBox.information(self, _('Message'), msg, _('OK'))
 220
 221
 222
 223