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(self.broadcast)
  84         b.hide()
  85         buttons.addWidget(b)
  86
  87         self.save_button = b = QPushButton(_("Save"))
  88         b.clicked.connect(self.save)
  89         buttons.addWidget(b)
  90
  91         cancelButton = QPushButton(_("Close"))
  92         cancelButton.clicked.connect(lambda: self.done(0))
  93         buttons.addWidget(cancelButton)
  94         cancelButton.setDefault(True)
  95
  96         self.update()
  97
  98
  99
 100
 101     def sign(self):
 102         tx_dict = self.tx.as_dict()
 103         input_info = json.loads(tx_dict["input_info"])
 104         self.parent.sign_raw_transaction(self.tx, input_info)
 105         self.update()
 106
 107
 108     def save(self):
 109         name = 'signed_%s.txn' % (self.tx.hash()[0:8]) if self.tx.is_complete() else 'unsigned.txn'
 110         fileName = self.parent.getSaveFileName(_("Select where to save your signed transaction"), name, "*.txn")
 111         if fileName:
 112             with open(fileName, "w+") as f:
 113                 f.write(json.dumps(self.tx.as_dict(),indent=4) + '\n')
 114             self.show_message(_("Transaction saved successfully"))
 115
 116
 117
 118     def update(self):
 119
 120         is_relevant, is_mine, v, fee = self.wallet.get_tx_value(self.tx)
 121
 122         if self.tx.is_complete():
 123             status = _("Status: Signed")
 124             self.sign_button.hide()
 125             tx_hash = self.tx.hash()
 126
 127             if tx_hash in self.wallet.transactions.keys():
 128                 conf, timestamp = self.wallet.verifier.get_confirmations(tx_hash)
 129                 if timestamp:
 130                     time_str = datetime.datetime.fromtimestamp(timestamp).isoformat(' ')[:-3]
 131                 else:
 132                     time_str = 'pending'
 133                 status = _("Status: %d confirmations")%conf
 134                 self.broadcast_button.hide()
 135             else:
 136                 time_str = None
 137                 conf = 0
 138                 self.broadcast_button.show()
 139         else:
 140             status = _("Status: Unsigned")
 141             time_str = None
 142             if not self.wallet.is_watching_only():
 143                 self.sign_button.show()
 144             else:
 145                 self.sign_button.hide()
 146             self.broadcast_button.hide()
 147             tx_hash = 'unknown'
 148
 149         self.tx_hash_e.setText(tx_hash)
 150         self.status_label.setText(status)
 151
 152         if time_str is not None:
 153             self.date_label.setText(_("Date: %s")%time_str)
 154             self.date_label.show()
 155         else:
 156             self.date_label.hide()
 157
 158
 159         # if we are not synchronized, we cannot tell
 160         if self.parent.network is None or not self.parent.network.is_running() or not self.parent.network.is_connected():
 161             return
 162         if not self.wallet.up_to_date:
 163             return
 164
 165         if is_relevant:
 166             if is_mine:
 167                 if fee is not None:
 168                     self.amount_label.setText(_("Amount sent:")+' %s'% self.parent.format_amount(v-fee) + ' ' + self.parent.base_unit())
 169                     self.fee_label.setText(_("Transaction fee")+': %s'% self.parent.format_amount(fee) + ' ' + self.parent.base_unit())
 170                 else:
 171                     self.amount_label.setText(_("Amount sent:")+' %s'% self.parent.format_amount(v) + ' ' + self.parent.base_unit())
 172                     self.fee_label.setText(_("Transaction fee")+': '+ _("unknown"))
 173             else:
 174                 self.amount_label.setText(_("Amount received:")+' %s'% self.parent.format_amount(v) + ' ' + self.parent.base_unit())
 175         else:
 176             self.amount_label.setText(_("Transaction unrelated to your wallet"))
 177
 178
 179     def exec_menu(self, position,l):
 180         item = l.itemAt(position)
 181         if not item: return
 182         addr = unicode(item.text(0))
 183         menu = QMenu()
 184         menu.addAction(_("Copy to clipboard"), lambda: self.parent.app.clipboard().setText(addr))
 185         menu.exec_(l.viewport().mapToGlobal(position))
 186
 187
 188     def add_io(self, vbox):
 189
 190         if self.tx.locktime > 0:
 191             vbox.addWidget(QLabel("LockTime: %d\n" % self.tx.locktime))
 192
 193         vbox.addWidget(QLabel(_("Inputs")))
 194         def format_input(x):
 195             if x.get('is_coinbase'):
 196                 return 'coinbase'
 197             else:
 198                 _hash = x.get('prevout_hash')
 199                 return _hash[0:16] + '...' + _hash[-8:] + ":%d"%x.get('prevout_n') + u'\t' + "%s"%x.get('address')
 200         lines = map(format_input, self.tx.inputs )
 201         i_text = QTextEdit()
 202         i_text.setText('\n'.join(lines))
 203         i_text.setReadOnly(True)
 204         i_text.setMaximumHeight(100)
 205         vbox.addWidget(i_text)
 206
 207         vbox.addWidget(QLabel(_("Outputs")))
 208         lines = map(lambda x: x[0] + u'\t\t' + self.parent.format_amount(x[1]), self.tx.outputs)
 209         o_text = QTextEdit()
 210         o_text.setText('\n'.join(lines))
 211         o_text.setReadOnly(True)
 212         o_text.setMaximumHeight(100)
 213         vbox.addWidget(o_text)
 214
 215
 216
 217
 218     def broadcast(self):
 219         result, result_message = self.wallet.sendtx( self.tx )
 220         if result:
 221             self.show_message(_("Transaction successfully sent")+': %s' % (result_message))
 222         else:
 223             self.show_message(_("There was a problem sending your transaction:") + '\n %s' % (result_message))
 224
 225     def show_message(self, msg):
 226         QMessageBox.information(self, _('Message'), msg, _('OK'))
 227
 228
 229
 230