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