gui/gui_classic/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
  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.io = self.io_widget(tx)
  70         vbox.addWidget( self.io )
  71
  72         buttons = QHBoxLayout()
  73         vbox.addLayout( buttons )
  74
  75         buttons.addStretch(1)
  76
  77         self.sign_button = b = QPushButton(_("Sign"))
  78         b.clicked.connect(self.sign)
  79         buttons.addWidget(b)
  80
  81         self.broadcast_button = b = QPushButton(_("Broadcast"))
  82         b.clicked.connect(self.broadcast)
  83         b.hide()
  84         buttons.addWidget(b)
  85
  86         self.save_button = b = QPushButton(_("Save"))
  87         b.clicked.connect(self.save)
  88         buttons.addWidget(b)
  89
  90         cancelButton = QPushButton(_("Close"))
  91         cancelButton.clicked.connect(lambda: self.done(0))
  92         buttons.addWidget(cancelButton)
  93
  94         self.update()
  95
  96
  97
  98
  99     def sign(self):
 100         tx_dict = self.tx.as_dict()
 101         input_info = json.loads(tx_dict["input_info"])
 102         self.parent.sign_raw_transaction(self.tx, input_info, self)
 103         self.update()
 104
 105
 106     def save(self):
 107         fileName = self.parent.getSaveFileName(_("Select where to save your signed transaction"), 'signed_%s.txn' % (self.tx.hash()[0:8]), "*.txn")
 108         if fileName:
 109             with open(fileName, "w+") as f:
 110                 f.write(json.dumps(self.tx.as_dict(),indent=4) + '\n')
 111             self.show_message(_("Transaction saved successfully"))
 112
 113
 114     def update(self):
 115         tx_hash = self.tx.hash()
 116
 117         is_relevant, is_mine, v, fee = self.wallet.get_tx_value(self.tx)
 118
 119         if self.tx.is_complete:
 120             status = "Status: Signed"
 121             self.sign_button.hide()
 122
 123             if tx_hash in self.wallet.transactions.keys():
 124                 conf, timestamp = self.wallet.verifier.get_confirmations(tx_hash)
 125                 if timestamp:
 126                     time_str = datetime.datetime.fromtimestamp(timestamp).isoformat(' ')[:-3]
 127                 else:
 128                     time_str = 'pending'
 129                 status = "Status: %d confirmations"%conf
 130                 self.broadcast_button.hide()
 131             else:
 132                 time_str = None
 133                 conf = 0
 134                 self.broadcast_button.show()
 135         else:
 136             status = "Status: Unsigned"
 137             time_str = None
 138             self.sign_button.show()
 139             self.broadcast_button.hide()
 140
 141         self.tx_hash_e.setText(tx_hash)
 142         self.status_label.setText(status)
 143
 144         if time_str is not None:
 145             self.date_label.setText("Date: %s"%time_str)
 146             self.date_label.show()
 147         else:
 148             self.date_label.hide()
 149
 150         if is_relevant:
 151             if is_mine:
 152                 if fee is not None:
 153                     self.amount_label.setText("Amount sent: %s"% self.parent.format_amount(v-fee))
 154                     self.fee_label.setText("Transaction fee: %s"% self.parent.format_amount(fee))
 155                 else:
 156                     self.amount_label.setText("Amount sent: %s"% self.parent.format_amount(v))
 157                     self.fee_label.setText("Transaction fee: unknown")
 158             else:
 159                 self.amount_label.setText("Amount received: %s"% self.parent.format_amount(v))
 160         else:
 161             self.amount_label.setText("Transaction unrelated to your wallet")
 162
 163
 164
 165     def io_widget(self, tx):
 166         tabs = QTabWidget(self)
 167
 168         tab1 = QWidget()
 169         grid_ui = QGridLayout(tab1)
 170         grid_ui.setColumnStretch(0,1)
 171         tabs.addTab(tab1, _('Outputs') )
 172
 173         tree_widget = QTreeWidget(self)
 174         tree_widget.setColumnCount(2)
 175         tree_widget.setHeaderLabels( [_('Address'), _('Amount')] )
 176         tree_widget.setColumnWidth(0, 300)
 177         tree_widget.setColumnWidth(1, 50)
 178
 179         for address, value in tx.outputs:
 180             item = QTreeWidgetItem( [address, "%s" % ( self.parent.format_amount(value))] )
 181             tree_widget.addTopLevelItem(item)
 182
 183         tree_widget.setMaximumHeight(100)
 184
 185         grid_ui.addWidget(tree_widget)
 186
 187         tab2 = QWidget()
 188         grid_ui = QGridLayout(tab2)
 189         grid_ui.setColumnStretch(0,1)
 190         tabs.addTab(tab2, _('Inputs') )
 191
 192         tree_widget = QTreeWidget(self)
 193         tree_widget.setColumnCount(2)
 194         tree_widget.setHeaderLabels( [ _('Address'), _('Previous output')] )
 195
 196         for input_line in tx.inputs:
 197             item = QTreeWidgetItem( [ str(input_line["address"]), str(input_line.get("prevout_hash"))] )
 198             tree_widget.addTopLevelItem(item)
 199
 200         tree_widget.setMaximumHeight(100)
 201
 202         grid_ui.addWidget(tree_widget)
 203         return tabs
 204
 205
 206     def broadcast(self):
 207         result, result_message = self.wallet.sendtx( self.tx )
 208         if result:
 209             self.show_message("Transaction successfully sent: %s" % (result_message))
 210             if dialog:
 211                 dialog.done(0)
 212         else:
 213             self.show_message("There was a problem sending your transaction:\n %s" % (result_message))
 214
 215     def show_message(self, msg):
 216         QMessageBox.information(self, _('Message'), msg, _('OK'))
 217
 218
 219
 220