lib/gui_lite.py

   1 import sys
   2
   3 try:
   4   from PyQt4.QtCore import *
   5   from PyQt4.QtGui import *
   6 except ImportError:
   7   print "You need to have PyQT installed to run Electrum"
   8   print "If you have pip installed try 'sudo pip install pyqt' if you are on Debian/Ubuntu try 'sudo apt-get install python-qt4'"
   9   sys.exit(1)
  10
  11 from decimal import Decimal as D
  12 from util import appdata_dir, get_resource_path as rsrc
  13 from i18n import _
  14 import decimal
  15 import exchange_rate
  16 import os.path
  17 import random
  18 import re
  19 import time
  20 import wallet
  21 import webbrowser
  22 import history_widget
  23
  24 try:
  25     import lib.gui_qt as gui_qt
  26 except ImportError:
  27     import electrum.gui_qt as gui_qt
  28
  29 bitcoin = lambda v: v * 100000000
  30
  31 def IconButton(filename, parent=None):
  32     pixmap = QPixmap(filename)
  33     icon = QIcon(pixmap)
  34     return QPushButton(icon, "", parent)
  35
  36 class Timer(QThread):
  37     def run(self):
  38         while True:
  39             self.emit(SIGNAL('timersignal'))
  40             time.sleep(0.5)
  41
  42 def resize_line_edit_width(line_edit, text_input):
  43     metrics = QFontMetrics(qApp.font())
  44     # Create an extra character to add some space on the end
  45     text_input += "A"
  46     line_edit.setMinimumWidth(metrics.width(text_input))
  47
  48 def cd_data_dir():
  49     assert sys.argv
  50     prefix_path = os.path.dirname(sys.argv[0])
  51     local_data = os.path.join(prefix_path, "data")
  52     if os.path.exists(os.path.join(local_data, "style.css")):
  53         data_dir = local_data
  54     else:
  55         data_dir = appdata_dir()
  56     QDir.setCurrent(data_dir)
  57
  58 class ElectrumGui:
  59
  60     def __init__(self, wallet):
  61         qtVersion = qVersion()
  62         if not(int(qtVersion[0]) >= 4 and int(qtVersion[2]) >= 7):
  63           print "Sorry, Electrum requires Qt >= 4.7 to run"
  64           print "Check your distributions packages or download it at http://qt.nokia.com/downloads"
  65           sys.exit(0)
  66
  67         self.wallet = wallet
  68         self.app = QApplication(sys.argv)
  69         # Should probably not modify the current path but instead
  70         # change the behaviour of rsrc(...)
  71         self.old_path = QDir.currentPath()
  72         cd_data_dir()
  73         with open(rsrc("style.css")) as style_file:
  74             self.app.setStyleSheet(style_file.read())
  75
  76     def main(self, url):
  77         actuator = MiniActuator(self.wallet)
  78         self.mini = MiniWindow(actuator, self.expand)
  79         driver = MiniDriver(self.wallet, self.mini)
  80
  81         # Reset path back to original value now that loading the GUI
  82         # is completed.
  83         QDir.setCurrent(self.old_path)
  84
  85         if url:
  86             self.set_url(url)
  87
  88         timer = Timer()
  89         timer.start()
  90         self.expert = gui_qt.ElectrumWindow(self.wallet)
  91         self.expert.app = self.app
  92         self.expert.connect_slots(timer)
  93         self.expert.update_wallet()
  94
  95         self.app.exec_()
  96
  97     def expand(self):
  98         self.mini.hide()
  99         self.expert.show()
 100
 101     def set_url(self, url):
 102         payto, amount, label, message, signature, identity, url = \
 103             self.wallet.parse_url(url, self.show_message, self.show_question)
 104         self.mini.set_payment_fields(payto, amount)
 105
 106     def show_message(self, message):
 107         QMessageBox.information(self.mini, _("Message"), message, _("OK"))
 108
 109     def show_question(self, message):
 110         choice = QMessageBox.question(self.mini, _("Message"), message,
 111                                       QMessageBox.Yes|QMessageBox.No,
 112                                       QMessageBox.No)
 113         return choice == QMessageBox.Yes
 114
 115     def restore_or_create(self):
 116         qt_gui_object = gui_qt.ElectrumGui(self.wallet, self.app)
 117         return qt_gui_object.restore_or_create()
 118
 119 class MiniWindow(QDialog):
 120
 121     def __init__(self, actuator, expand_callback):
 122         super(MiniWindow, self).__init__()
 123
 124         self.actuator = actuator
 125
 126         self.btc_balance = None
 127         self.quote_currencies = ["EUR", "USD", "GBP"]
 128         self.actuator.set_configured_currency(self.set_quote_currency)
 129         self.exchanger = exchange_rate.Exchanger(self)
 130         # Needed because price discovery is done in a different thread
 131         # which needs to be sent back to this main one to update the GUI
 132         self.connect(self, SIGNAL("refresh_balance()"), self.refresh_balance)
 133
 134         self.balance_label = BalanceLabel(self.change_quote_currency)
 135         self.balance_label.setObjectName("balance_label")
 136
 137         self.receive_button = QPushButton(_("&Receive"))
 138         self.receive_button.setObjectName("receive_button")
 139         self.receive_button.setDefault(True)
 140         self.receive_button.clicked.connect(self.copy_address)
 141
 142         # Bitcoin address code
 143         self.address_input = QLineEdit()
 144         self.address_input.setPlaceholderText(_("Enter a Bitcoin address..."))
 145         self.address_input.setObjectName("address_input")
 146
 147
 148         self.address_input.textEdited.connect(self.address_field_changed)
 149         resize_line_edit_width(self.address_input,
 150                                "1BtaFUr3qVvAmwrsuDuu5zk6e4s2rxd2Gy")
 151
 152         self.address_completions = QStringListModel()
 153         address_completer = QCompleter(self.address_input)
 154         address_completer.setCaseSensitivity(False)
 155         address_completer.setModel(self.address_completions)
 156         self.address_input.setCompleter(address_completer)
 157
 158         address_layout = QHBoxLayout()
 159         address_layout.addWidget(self.address_input)
 160
 161         self.amount_input = QLineEdit()
 162         self.amount_input.setPlaceholderText(_("... and amount"))
 163         self.amount_input.setObjectName("amount_input")
 164         # This is changed according to the user's displayed balance
 165         self.amount_validator = QDoubleValidator(self.amount_input)
 166         self.amount_validator.setNotation(QDoubleValidator.StandardNotation)
 167         self.amount_validator.setDecimals(8)
 168         self.amount_input.setValidator(self.amount_validator)
 169
 170         # This removes the very ugly OSX highlighting, please leave this in :D
 171         self.address_input.setAttribute(Qt.WA_MacShowFocusRect, 0)
 172         self.amount_input.setAttribute(Qt.WA_MacShowFocusRect, 0)
 173         self.amount_input.textChanged.connect(self.amount_input_changed)
 174
 175         self.send_button = QPushButton(_("&Send"))
 176         self.send_button.setObjectName("send_button")
 177         self.send_button.setDisabled(True);
 178         self.send_button.clicked.connect(self.send)
 179
 180         main_layout = QGridLayout(self)
 181
 182         main_layout.addWidget(self.balance_label, 0, 0)
 183         main_layout.addWidget(self.receive_button, 0, 1)
 184
 185         main_layout.addWidget(self.address_input, 1, 0, 1, -1)
 186
 187         main_layout.addWidget(self.amount_input, 2, 0)
 188         main_layout.addWidget(self.send_button, 2, 1)
 189
 190         self.history_list = history_widget.HistoryWidget()
 191         self.history_list.setObjectName("history")
 192         self.history_list.hide()
 193         self.history_list.setAlternatingRowColors(True)
 194         main_layout.addWidget(self.history_list, 3, 0, 1, -1)
 195
 196         menubar = QMenuBar()
 197         electrum_menu = menubar.addMenu(_("&Bitcoin"))
 198         self.servers_menu = electrum_menu.addMenu(_("&Servers"))
 199         self.servers_menu.addAction(_("Foo"))
 200         electrum_menu.addSeparator()
 201         brain_seed = electrum_menu.addAction(_("&BrainWallet Info"))
 202         brain_seed.triggered.connect(self.actuator.show_seed_dialog)
 203         electrum_menu.addAction(_("&Quit"))
 204
 205         view_menu = menubar.addMenu(_("&View"))
 206         expert_gui = view_menu.addAction(_("&Pro Mode"))
 207         expert_gui.triggered.connect(expand_callback)
 208         view_menu.addMenu(_("&Themes"))
 209         view_menu.addSeparator()
 210         show_history = view_menu.addAction(_("Show History"))
 211         show_history.setCheckable(True)
 212         show_history.toggled.connect(self.show_history)
 213
 214         settings_menu = menubar.addMenu(_("&Settings"))
 215         settings_menu.addAction(_("&Configure Electrum"))
 216
 217         help_menu = menubar.addMenu(_("&Help"))
 218         the_website = help_menu.addAction(_("&Website"))
 219         the_website.triggered.connect(self.the_website)
 220         help_menu.addSeparator()
 221         report_bug = help_menu.addAction(_("&Report Bug"))
 222         report_bug.triggered.connect(self.show_report_bug)
 223         show_about = help_menu.addAction(_("&About"))
 224         show_about.triggered.connect(self.show_about)
 225         main_layout.setMenuBar(menubar)
 226
 227         quit_shortcut = QShortcut(QKeySequence("Ctrl+Q"), self)
 228         quit_shortcut.activated.connect(self.close)
 229         close_shortcut = QShortcut(QKeySequence("Ctrl+W"), self)
 230         close_shortcut.activated.connect(self.close)
 231
 232         self.setWindowIcon(QIcon(":electrum.png"))
 233         self.setWindowTitle("Electrum")
 234         self.setWindowFlags(Qt.Window|Qt.MSWindowsFixedSizeDialogHint)
 235         self.layout().setSizeConstraint(QLayout.SetFixedSize)
 236         self.setObjectName("main_window")
 237         self.show()
 238
 239     def recompute_style(self):
 240         qApp.style().unpolish(self)
 241         qApp.style().polish(self)
 242
 243     def closeEvent(self, event):
 244         super(MiniWindow, self).closeEvent(event)
 245         qApp.quit()
 246
 247     def set_payment_fields(self, dest_address, amount):
 248         self.address_input.setText(dest_address)
 249         self.address_field_changed(dest_address)
 250         self.amount_input.setText(amount)
 251
 252     def activate(self):
 253         pass
 254
 255     def deactivate(self):
 256         pass
 257
 258     def set_quote_currency(self, currency):
 259         assert currency in self.quote_currencies
 260         self.quote_currencies.remove(currency)
 261         self.quote_currencies = [currency] + self.quote_currencies
 262         self.refresh_balance()
 263
 264     def change_quote_currency(self):
 265         self.quote_currencies = \
 266             self.quote_currencies[1:] + self.quote_currencies[0:1]
 267         self.actuator.set_config_currency(self.quote_currencies[0])
 268         self.refresh_balance()
 269
 270     def refresh_balance(self):
 271         if self.btc_balance is None:
 272             # Price has been discovered before wallet has been loaded
 273             # and server connect... so bail.
 274             return
 275         self.set_balances(self.btc_balance)
 276         self.amount_input_changed(self.amount_input.text())
 277
 278     def set_balances(self, btc_balance):
 279         self.btc_balance = btc_balance
 280         quote_text = self.create_quote_text(btc_balance)
 281         if quote_text:
 282             quote_text = "(%s)" % quote_text
 283         btc_balance = "%.2f" % (btc_balance / bitcoin(1))
 284         self.balance_label.set_balance_text(btc_balance, quote_text)
 285         self.setWindowTitle("Electrum - %s BTC" % btc_balance)
 286
 287     def amount_input_changed(self, amount_text):
 288         self.check_button_status()
 289
 290         try:
 291             amount = D(str(amount_text))
 292         except decimal.InvalidOperation:
 293             self.balance_label.show_balance()
 294         else:
 295             quote_text = self.create_quote_text(amount * bitcoin(1))
 296             if quote_text:
 297                 self.balance_label.set_amount_text(quote_text)
 298                 self.balance_label.show_amount()
 299             else:
 300                 self.balance_label.show_balance()
 301
 302     def create_quote_text(self, btc_balance):
 303         quote_currency = self.quote_currencies[0]
 304         quote_balance = self.exchanger.exchange(btc_balance, quote_currency)
 305         if quote_balance is None:
 306             quote_text = ""
 307         else:
 308             quote_text = "%.2f %s" % ((quote_balance / bitcoin(1)),
 309                                       quote_currency)
 310         return quote_text
 311
 312     def send(self):
 313         if self.actuator.send(self.address_input.text(),
 314                               self.amount_input.text(), self):
 315             self.address_input.setText("")
 316             self.amount_input.setText("")
 317
 318     def check_button_status(self):
 319         if (self.address_input.property("isValid") == True and
 320             len(self.amount_input.text()) > 0):
 321             self.send_button.setDisabled(False)
 322         else:
 323             self.send_button.setDisabled(True)
 324
 325     def address_field_changed(self, address):
 326         if self.actuator.is_valid(address):
 327             self.check_button_status()
 328             self.address_input.setProperty("isValid", True)
 329             self.recompute_style(self.address_input)
 330         else:
 331             self.send_button.setDisabled(True)
 332             self.address_input.setProperty("isValid", False)
 333             self.recompute_style(self.address_input)
 334
 335         if len(address) == 0:
 336             self.address_input.setProperty("isValid", None)
 337             self.recompute_style(self.address_input)
 338
 339     def recompute_style(self, element):
 340         self.style().unpolish(element)
 341         self.style().polish(element)
 342
 343     def copy_address(self):
 344         receive_popup = ReceivePopup(self.receive_button)
 345         self.actuator.copy_address(receive_popup)
 346
 347     def update_completions(self, completions):
 348         self.address_completions.setStringList(completions)
 349
 350     def update_history(self, tx_history):
 351         for tx in tx_history[-10:]:
 352             address = tx["default_label"]
 353             amount = D(tx["value"]) / 10**8
 354             self.history_list.append(address, amount)
 355
 356     def acceptbit(self):
 357         self.actuator.acceptbit(self.quote_currencies[0])
 358
 359     def the_website(self):
 360         webbrowser.open("http://electrum-desktop.com")
 361
 362     def show_about(self):
 363         QMessageBox.about(self, "Electrum",
 364             _("Electrum's focus is speed, with low resource usage and simplifying Bitcoin. You do not need to perform regular backups, because your wallet can be recovered from a secret phrase that you can memorize or write on paper. Startup times are instant because it operates in conjuction with high-performance servers that handle the most complicated parts of the Bitcoin system.\n\nSend donations to 1JwTMv4GWaPdf931N6LNPJeZBfZgZJ3zX1"))
 365
 366     def show_report_bug(self):
 367         QMessageBox.information(self, "Electrum - " + _("Reporting Bugs"),
 368             _("Email bug reports to %s") % "genjix" + "@" + "riseup.net")
 369
 370     def show_history(self, toggle_state):
 371         if toggle_state:
 372             self.history_list.show()
 373         else:
 374             self.history_list.hide()
 375
 376 class BalanceLabel(QLabel):
 377
 378     SHOW_CONNECTING = 1
 379     SHOW_BALANCE = 2
 380     SHOW_AMOUNT = 3
 381
 382     def __init__(self, change_quote_currency, parent=None):
 383         super(QLabel, self).__init__(_("Connecting..."), parent)
 384         self.change_quote_currency = change_quote_currency
 385         self.state = self.SHOW_CONNECTING
 386         self.balance_text = ""
 387         self.amount_text = ""
 388
 389     def mousePressEvent(self, event):
 390         if self.state != self.SHOW_CONNECTING:
 391             self.change_quote_currency()
 392
 393     def set_balance_text(self, btc_balance, quote_text):
 394         if self.state == self.SHOW_CONNECTING:
 395             self.state = self.SHOW_BALANCE
 396         self.balance_text = "<span style='font-size: 18pt'>%s</span> <span style='font-size: 10pt'>BTC</span> <span style='font-size: 10pt'>%s</span>" % (btc_balance, quote_text)
 397         if self.state == self.SHOW_BALANCE:
 398             self.setText(self.balance_text)
 399
 400     def set_amount_text(self, quote_text):
 401         self.amount_text = "<span style='font-size: 10pt'>%s</span>" % quote_text
 402         if self.state == self.SHOW_AMOUNT:
 403             self.setText(self.amount_text)
 404
 405     def show_balance(self):
 406         if self.state == self.SHOW_AMOUNT:
 407             self.state = self.SHOW_BALANCE
 408             self.setText(self.balance_text)
 409
 410     def show_amount(self):
 411         if self.state == self.SHOW_BALANCE:
 412             self.state = self.SHOW_AMOUNT
 413             self.setText(self.amount_text)
 414
 415 def ok_cancel_buttons(dialog):
 416     row_layout = QHBoxLayout()
 417     row_layout.addStretch(1)
 418     ok_button = QPushButton(_("OK"))
 419     row_layout.addWidget(ok_button)
 420     ok_button.clicked.connect(dialog.accept)
 421     cancel_button = QPushButton(_("Cancel"))
 422     row_layout.addWidget(cancel_button)
 423     cancel_button.clicked.connect(dialog.reject)
 424     return row_layout
 425
 426 class PasswordDialog(QDialog):
 427
 428     def __init__(self, parent):
 429         super(QDialog, self).__init__(parent)
 430
 431         self.setModal(True)
 432
 433         self.password_input = QLineEdit()
 434         self.password_input.setEchoMode(QLineEdit.Password)
 435
 436         main_layout = QVBoxLayout(self)
 437         message = _('Please enter your password')
 438         main_layout.addWidget(QLabel(message))
 439
 440         grid = QGridLayout()
 441         grid.setSpacing(8)
 442         grid.addWidget(QLabel(_('Password')), 1, 0)
 443         grid.addWidget(self.password_input, 1, 1)
 444         main_layout.addLayout(grid)
 445
 446         main_layout.addLayout(ok_cancel_buttons(self))
 447         self.setLayout(main_layout)
 448
 449     def run(self):
 450         if not self.exec_():
 451             return
 452         return unicode(self.password_input.text())
 453
 454 class ReceivePopup(QDialog):
 455
 456     def leaveEvent(self, event):
 457         self.close()
 458
 459     def setup(self, address):
 460         label = QLabel(_("Copied your Bitcoin address to the clipboard!"))
 461         address_display = QLineEdit(address)
 462         address_display.setReadOnly(True)
 463         resize_line_edit_width(address_display, address)
 464
 465         main_layout = QVBoxLayout(self)
 466         main_layout.addWidget(label)
 467         main_layout.addWidget(address_display)
 468
 469         self.setMouseTracking(True)
 470         self.setWindowTitle("Electrum - " + _("Receive Bitcoin payment"))
 471         self.setWindowFlags(Qt.Window|Qt.FramelessWindowHint|Qt.MSWindowsFixedSizeDialogHint)
 472         self.layout().setSizeConstraint(QLayout.SetFixedSize)
 473         #self.setFrameStyle(QFrame.WinPanel|QFrame.Raised)
 474         #self.setAlignment(Qt.AlignCenter)
 475
 476     def popup(self):
 477         parent = self.parent()
 478         top_left_pos = parent.mapToGlobal(parent.rect().bottomLeft())
 479         self.move(top_left_pos)
 480         center_mouse_pos = self.mapToGlobal(self.rect().center())
 481         QCursor.setPos(center_mouse_pos)
 482         self.show()
 483
 484 class MiniActuator:
 485
 486     def __init__(self, wallet):
 487         self.wallet = wallet
 488
 489     def set_configured_currency(self, set_quote_currency):
 490         currency = self.wallet.conversion_currency
 491         # currency can be none when Electrum is used for the first
 492         # time and no setting has been created yet.
 493         if currency is not None:
 494             set_quote_currency(currency)
 495
 496     def set_config_currency(self, conversion_currency):
 497         self.wallet.conversion_currency = conversion_currency
 498
 499     def copy_address(self, receive_popup):
 500         addrs = [addr for addr in self.wallet.all_addresses()
 501                  if not self.wallet.is_change(addr)]
 502         # Select most recent addresses from gap limit
 503         addrs = addrs[-self.wallet.gap_limit:]
 504         copied_address = random.choice(addrs)
 505         qApp.clipboard().setText(copied_address)
 506         receive_popup.setup(copied_address)
 507         receive_popup.popup()
 508
 509     def send(self, address, amount, parent_window):
 510         dest_address = self.fetch_destination(address)
 511
 512         if dest_address is None or not self.wallet.is_valid(dest_address):
 513             QMessageBox.warning(parent_window, _('Error'),
 514                 _('Invalid Bitcoin Address') + ':\n' + address, _('OK'))
 515             return False
 516
 517         convert_amount = lambda amount: \
 518             int(D(unicode(amount)) * bitcoin(1))
 519         amount = convert_amount(amount)
 520
 521         if self.wallet.use_encryption:
 522             password_dialog = PasswordDialog(parent_window)
 523             password = password_dialog.run()
 524             if not password:
 525                 return
 526         else:
 527             password = None
 528
 529         fee = 0
 530         # 0.1 BTC = 10000000
 531         if amount < bitcoin(1) / 10:
 532             # 0.001 BTC
 533             fee = bitcoin(1) / 1000
 534
 535         try:
 536             tx = self.wallet.mktx(dest_address, amount, "", password, fee)
 537         except BaseException as error:
 538             QMessageBox.warning(parent_window, _('Error'), str(error), _('OK'))
 539             return False
 540
 541         status, message = self.wallet.sendtx(tx)
 542         if not status:
 543             QMessageBox.warning(parent_window, _('Error'), message, _('OK'))
 544             return False
 545
 546         QMessageBox.information(parent_window, '',
 547             _('Payment sent.') + '\n' + message, _('OK'))
 548         return True
 549
 550     def fetch_destination(self, address):
 551         recipient = unicode(address).strip()
 552
 553         # alias
 554         match1 = re.match("^(|([\w\-\.]+)@)((\w[\w\-]+\.)+[\w\-]+)$",
 555                           recipient)
 556
 557         # label or alias, with address in brackets
 558         match2 = re.match("(.*?)\s*\<([1-9A-HJ-NP-Za-km-z]{26,})\>",
 559                           recipient)
 560
 561         if match1:
 562             dest_address = \
 563                 self.wallet.get_alias(recipient, True,
 564                                       self.show_message, self.question)
 565             return dest_address
 566         elif match2:
 567             return match2.group(2)
 568         else:
 569             return recipient
 570
 571     def is_valid(self, address):
 572         return self.wallet.is_valid(address)
 573
 574     def acceptbit(self, currency):
 575         master_pubkey = self.wallet.master_public_key.encode("hex")
 576         url = "http://acceptbit.com/mpk/%s/%s" % (master_pubkey, currency)
 577         webbrowser.open(url)
 578
 579     def show_seed_dialog(self):
 580         gui_qt.ElectrumWindow.show_seed_dialog(self.wallet)
 581
 582 class MiniDriver(QObject):
 583
 584     INITIALIZING = 0
 585     CONNECTING = 1
 586     SYNCHRONIZING = 2
 587     READY = 3
 588
 589     def __init__(self, wallet, window):
 590         super(QObject, self).__init__()
 591
 592         self.wallet = wallet
 593         self.window = window
 594
 595         self.wallet.register_callback(self.update_callback)
 596
 597         self.state = None
 598
 599         self.initializing()
 600         self.connect(self, SIGNAL("updatesignal()"), self.update)
 601         self.update_callback()
 602
 603     # This is a hack to workaround that Qt does not like changing the
 604     # window properties from this other thread before the runloop has
 605     # been called from.
 606     def update_callback(self):
 607         self.emit(SIGNAL("updatesignal()"))
 608
 609     def update(self):
 610         if not self.wallet.interface:
 611             self.initializing()
 612         elif not self.wallet.interface.is_connected:
 613             self.connecting()
 614         elif not self.wallet.blocks == -1:
 615             self.connecting()
 616         elif not self.wallet.is_up_to_date:
 617             self.synchronizing()
 618         else:
 619             self.ready()
 620
 621         if self.wallet.up_to_date:
 622             self.update_balance()
 623             self.update_completions()
 624             self.update_history()
 625
 626     def initializing(self):
 627         if self.state == self.INITIALIZING:
 628             return
 629         self.state = self.INITIALIZING
 630         self.window.deactivate()
 631
 632     def connecting(self):
 633         if self.state == self.CONNECTING:
 634             return
 635         self.state = self.CONNECTING
 636         self.window.deactivate()
 637
 638     def synchronizing(self):
 639         if self.state == self.SYNCHRONIZING:
 640             return
 641         self.state = self.SYNCHRONIZING
 642         self.window.deactivate()
 643
 644     def ready(self):
 645         if self.state == self.READY:
 646             return
 647         self.state = self.READY
 648         self.window.activate()
 649
 650     def update_balance(self):
 651         conf_balance, unconf_balance = self.wallet.get_balance()
 652         balance = D(conf_balance + unconf_balance)
 653         self.window.set_balances(balance)
 654
 655     def update_completions(self):
 656         completions = []
 657         for addr, label in self.wallet.labels.items():
 658             if addr in self.wallet.addressbook:
 659                 completions.append("%s <%s>" % (label, addr))
 660         completions = completions + self.wallet.aliases.keys()
 661         self.window.update_completions(completions)
 662
 663     def update_history(self):
 664         tx_history = self.wallet.get_tx_history()
 665         self.window.update_history(tx_history)
 666
 667 if __name__ == "__main__":
 668     app = QApplication(sys.argv)
 669     with open(rsrc("style.css")) as style_file:
 670         app.setStyleSheet(style_file.read())
 671     mini = MiniWindow()
 672     sys.exit(app.exec_())
 673