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         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     def update(self):
 116         tx_hash = self.tx.hash()
 117
 118         is_relevant, is_mine, v, fee = self.wallet.get_tx_value(self.tx)
 119
 120         if self.tx.is_complete:
 121             status = "Status: Signed"
 122             self.sign_button.hide()
 123
 124             if tx_hash in self.wallet.transactions.keys():
 125                 conf, timestamp = self.wallet.verifier.get_confirmations(tx_hash)
 126                 if timestamp:
 127                     time_str = datetime.datetime.fromtimestamp(timestamp).isoformat(' ')[:-3]
 128                 else:
 129                     time_str = 'pending'
 130                 status = "Status: %d confirmations"%conf
 131                 self.broadcast_button.hide()
 132             else:
 133                 time_str = None
 134                 conf = 0
 135                 self.broadcast_button.show()
 136         else:
 137             status = "Status: Unsigned"
 138             time_str = None
 139             self.sign_button.show()
 140             self.broadcast_button.hide()
 141
 142         self.tx_hash_e.setText(tx_hash)
 143         self.status_label.setText(status)
 144
 145         if time_str is not None:
 146             self.date_label.setText("Date: %s"%time_str)
 147             self.date_label.show()
 148         else:
 149             self.date_label.hide()
 150
 151         if is_relevant:
 152             if is_mine:
 153                 if fee is not None:
 154                     self.amount_label.setText("Amount sent: %s"% self.parent.format_amount(v-fee))
 155                     self.fee_label.setText("Transaction fee: %s"% self.parent.format_amount(fee))
 156                 else:
 157                     self.amount_label.setText("Amount sent: %s"% self.parent.format_amount(v))
 158                     self.fee_label.setText("Transaction fee: unknown")
 159             else:
 160                 self.amount_label.setText("Amount received: %s"% self.parent.format_amount(v))
 161         else:
 162             self.amount_label.setText("Transaction unrelated to your wallet")
 163
 164
 165
 166     def io_widget(self, tx):
 167         tabs = QTabWidget(self)
 168
 169         tab1 = QWidget()
 170         grid_ui = QGridLayout(tab1)
 171         grid_ui.setColumnStretch(0,1)
 172         tabs.addTab(tab1, _('Outputs') )
 173
 174         tree_widget = QTreeWidget(self)
 175         tree_widget.setColumnCount(2)
 176         tree_widget.setHeaderLabels( [_('Address'), _('Amount')] )
 177         tree_widget.setColumnWidth(0, 300)
 178         tree_widget.setColumnWidth(1, 50)
 179
 180         for address, value in tx.outputs:
 181             item = QTreeWidgetItem( [address, "%s" % ( self.parent.format_amount(value))] )
 182             tree_widget.addTopLevelItem(item)
 183
 184         tree_widget.setMaximumHeight(100)
 185
 186         grid_ui.addWidget(tree_widget)
 187
 188         tab2 = QWidget()
 189         grid_ui = QGridLayout(tab2)
 190         grid_ui.setColumnStretch(0,1)
 191         tabs.addTab(tab2, _('Inputs') )
 192
 193         tree_widget = QTreeWidget(self)
 194         tree_widget.setColumnCount(2)
 195         tree_widget.setHeaderLabels( [ _('Address'), _('Previous output')] )
 196
 197         for input_line in tx.inputs:
 198             item = QTreeWidgetItem( [ str(input_line["address"]), str(input_line.get("prevout_hash"))] )
 199             tree_widget.addTopLevelItem(item)
 200
 201         tree_widget.setMaximumHeight(100)
 202
 203         grid_ui.addWidget(tree_widget)
 204         return tabs
 205
 206
 207     def broadcast(self):
 208         result, result_message = self.wallet.sendtx( self.tx )
 209         if result:
 210             self.show_message("Transaction successfully sent: %s" % (result_message))
 211             if dialog:
 212                 dialog.done(0)
 213         else:
 214             self.show_message("There was a problem sending your transaction:\n %s" % (result_message))
 215
 216     def show_message(self, msg):
 217         QMessageBox.information(self, _('Message'), msg, _('OK'))
 218
 219
 220
 221