lib/gui_lite.py

   1 import sys
   2
   3 from PyQt4.QtCore import *
   4 from PyQt4.QtGui import *
   5
   6 from decimal import Decimal as D
   7 from util import get_resource_path as rsrc
   8 from i18n import _
   9 import decimal
  10 import exchange_rate
  11 import os.path
  12 import random
  13 import re
  14 import time
  15 import wallet
  16 import webbrowser
  17 import history_widget
  18 import util
  19
  20 try:
  21     import lib.gui_qt as gui_qt
  22 except ImportError:
  23     import electrum.gui_qt as gui_qt
  24
  25 bitcoin = lambda v: v * 100000000
  26
  27 def IconButton(filename, parent=None):
  28     pixmap = QPixmap(filename)
  29     icon = QIcon(pixmap)
  30     return QPushButton(icon, "", parent)
  31
  32 class Timer(QThread):
  33     def run(self):
  34         while True:
  35             self.emit(SIGNAL('timersignal'))
  36             time.sleep(0.5)
  37
  38 def resize_line_edit_width(line_edit, text_input):
  39     metrics = QFontMetrics(qApp.font())
  40     # Create an extra character to add some space on the end
  41     text_input += "A"
  42     line_edit.setMinimumWidth(metrics.width(text_input))
  43
  44 class ElectrumGui:
  45
  46     def __init__(self, wallet):
  47         self.wallet = wallet
  48         self.app = QApplication(sys.argv)
  49
  50     def main(self, url):
  51         actuator = MiniActuator(self.wallet)
  52         # Should probably not modify the current path but instead
  53         # change the behaviour of rsrc(...)
  54         old_path = QDir.currentPath()
  55         actuator.load_theme()
  56
  57         self.mini = MiniWindow(actuator, self.expand)
  58         driver = MiniDriver(self.wallet, self.mini)
  59
  60         # Reset path back to original value now that loading the GUI
  61         # is completed.
  62         QDir.setCurrent(old_path)
  63
  64         if url:
  65             self.set_url(url)
  66
  67         timer = Timer()
  68         timer.start()
  69         self.expert = gui_qt.ElectrumWindow(self.wallet)
  70         self.expert.app = self.app
  71         self.expert.connect_slots(timer)
  72         self.expert.update_wallet()
  73
  74         self.app.exec_()
  75
  76     def expand(self):
  77         """Hide the lite mode window and show pro-mode."""
  78         self.mini.hide()
  79         self.expert.show()
  80
  81     def set_url(self, url):
  82         payto, amount, label, message, signature, identity, url = \
  83             self.wallet.parse_url(url, self.show_message, self.show_question)
  84         self.mini.set_payment_fields(payto, amount)
  85
  86     def show_message(self, message):
  87         QMessageBox.information(self.mini, _("Message"), message, _("OK"))
  88
  89     def show_question(self, message):
  90         choice = QMessageBox.question(self.mini, _("Message"), message,
  91                                       QMessageBox.Yes|QMessageBox.No,
  92                                       QMessageBox.No)
  93         return choice == QMessageBox.Yes
  94
  95     def restore_or_create(self):
  96         qt_gui_object = gui_qt.ElectrumGui(self.wallet, self.app)
  97         return qt_gui_object.restore_or_create()
  98
  99 class MiniWindow(QDialog):
 100
 101     def __init__(self, actuator, expand_callback):
 102         super(MiniWindow, self).__init__()
 103
 104         self.actuator = actuator
 105
 106         self.btc_balance = None
 107         self.quote_currencies = ["EUR", "USD", "GBP"]
 108         self.actuator.set_configured_currency(self.set_quote_currency)
 109         self.exchanger = exchange_rate.Exchanger(self)
 110         # Needed because price discovery is done in a different thread
 111         # which needs to be sent back to this main one to update the GUI
 112         self.connect(self, SIGNAL("refresh_balance()"), self.refresh_balance)
 113
 114         self.balance_label = BalanceLabel(self.change_quote_currency)
 115         self.balance_label.setObjectName("balance_label")
 116
 117         self.receive_button = QPushButton(_("&Receive"))
 118         self.receive_button.setObjectName("receive_button")
 119         self.receive_button.setDefault(True)
 120         self.receive_button.clicked.connect(self.copy_address)
 121
 122         # Bitcoin address code
 123         self.address_input = QLineEdit()
 124         self.address_input.setPlaceholderText(_("Enter a Bitcoin address..."))
 125         self.address_input.setObjectName("address_input")
 126
 127
 128         self.address_input.textEdited.connect(self.address_field_changed)
 129         resize_line_edit_width(self.address_input,
 130                                "1BtaFUr3qVvAmwrsuDuu5zk6e4s2rxd2Gy")
 131
 132         self.address_completions = QStringListModel()
 133         address_completer = QCompleter(self.address_input)
 134         address_completer.setCaseSensitivity(False)
 135         address_completer.setModel(self.address_completions)
 136         self.address_input.setCompleter(address_completer)
 137
 138         address_layout = QHBoxLayout()
 139         address_layout.addWidget(self.address_input)
 140
 141         self.amount_input = QLineEdit()
 142         self.amount_input.setPlaceholderText(_("... and amount"))
 143         self.amount_input.setObjectName("amount_input")
 144         # This is changed according to the user's displayed balance
 145         self.amount_validator = QDoubleValidator(self.amount_input)
 146         self.amount_validator.setNotation(QDoubleValidator.StandardNotation)
 147         self.amount_validator.setDecimals(8)
 148         self.amount_input.setValidator(self.amount_validator)
 149
 150         # This removes the very ugly OSX highlighting, please leave this in :D
 151         self.address_input.setAttribute(Qt.WA_MacShowFocusRect, 0)
 152         self.amount_input.setAttribute(Qt.WA_MacShowFocusRect, 0)
 153         self.amount_input.textChanged.connect(self.amount_input_changed)
 154
 155         self.send_button = QPushButton(_("&Send"))
 156         self.send_button.setObjectName("send_button")
 157         self.send_button.setDisabled(True);
 158         self.send_button.clicked.connect(self.send)
 159
 160         main_layout = QGridLayout(self)
 161
 162         main_layout.addWidget(self.balance_label, 0, 0)
 163         main_layout.addWidget(self.receive_button, 0, 1)
 164
 165         main_layout.addWidget(self.address_input, 1, 0, 1, -1)
 166
 167         main_layout.addWidget(self.amount_input, 2, 0)
 168         main_layout.addWidget(self.send_button, 2, 1)
 169
 170         self.history_list = history_widget.HistoryWidget()
 171         self.history_list.setObjectName("history")
 172         self.history_list.hide()
 173         self.history_list.setAlternatingRowColors(True)
 174         main_layout.addWidget(self.history_list, 3, 0, 1, -1)
 175
 176         menubar = QMenuBar()
 177         electrum_menu = menubar.addMenu(_("&Bitcoin"))
 178         self.servers_menu = electrum_menu.addMenu(_("&Servers"))
 179         self.servers_menu.addAction(_("Foo"))
 180         electrum_menu.addSeparator()
 181         brain_seed = electrum_menu.addAction(_("&BrainWallet Info"))
 182         brain_seed.triggered.connect(self.actuator.show_seed_dialog)
 183         quit_option = electrum_menu.addAction(_("&Quit"))
 184         quit_option.triggered.connect(self.close)
 185
 186         view_menu = menubar.addMenu(_("&View"))
 187         expert_gui = view_menu.addAction(_("&Pro Mode"))
 188         expert_gui.triggered.connect(expand_callback)
 189         themes_menu = view_menu.addMenu(_("&Themes"))
 190         selected_theme = self.actuator.selected_theme()
 191         theme_group = QActionGroup(self)
 192         for theme_name in self.actuator.theme_names():
 193             theme_action = themes_menu.addAction(theme_name)
 194             theme_action.setCheckable(True)
 195             if selected_theme == theme_name:
 196                 theme_action.setChecked(True)
 197             class SelectThemeFunctor:
 198                 def __init__(self, theme_name, toggle_theme):
 199                     self.theme_name = theme_name
 200                     self.toggle_theme = toggle_theme
 201                 def __call__(self, checked):
 202                     if checked:
 203                         self.toggle_theme(self.theme_name)
 204             delegate = SelectThemeFunctor(theme_name, self.toggle_theme)
 205             theme_action.toggled.connect(delegate)
 206             theme_group.addAction(theme_action)
 207         view_menu.addSeparator()
 208         show_history = view_menu.addAction(_("Show History"))
 209         show_history.setCheckable(True)
 210         show_history.toggled.connect(self.show_history)
 211
 212         help_menu = menubar.addMenu(_("&Help"))
 213         the_website = help_menu.addAction(_("&Website"))
 214         the_website.triggered.connect(self.the_website)
 215         help_menu.addSeparator()
 216         report_bug = help_menu.addAction(_("&Report Bug"))
 217         report_bug.triggered.connect(self.show_report_bug)
 218         show_about = help_menu.addAction(_("&About"))
 219         show_about.triggered.connect(self.show_about)
 220         main_layout.setMenuBar(menubar)
 221
 222         quit_shortcut = QShortcut(QKeySequence("Ctrl+Q"), self)
 223         quit_shortcut.activated.connect(self.close)
 224         close_shortcut = QShortcut(QKeySequence("Ctrl+W"), self)
 225         close_shortcut.activated.connect(self.close)
 226
 227         self.setWindowIcon(QIcon(":electrum.png"))
 228         self.setWindowTitle("Electrum")
 229         self.setWindowFlags(Qt.Window|Qt.MSWindowsFixedSizeDialogHint)
 230         self.layout().setSizeConstraint(QLayout.SetFixedSize)
 231         self.setObjectName("main_window")
 232         self.show()
 233
 234     def toggle_theme(self, theme_name):
 235         old_path = QDir.currentPath()
 236         self.actuator.change_theme(theme_name)
 237         # Recompute style globally
 238         qApp.style().unpolish(self)
 239         qApp.style().polish(self)
 240         QDir.setCurrent(old_path)
 241
 242     def closeEvent(self, event):
 243         super(MiniWindow, self).closeEvent(event)
 244         qApp.quit()
 245
 246     def set_payment_fields(self, dest_address, amount):
 247         self.address_input.setText(dest_address)
 248         self.address_field_changed(dest_address)
 249         self.amount_input.setText(amount)
 250
 251     def activate(self):
 252         pass
 253
 254     def deactivate(self):
 255         pass
 256
 257     def set_quote_currency(self, currency):
 258         assert currency in self.quote_currencies
 259         self.quote_currencies.remove(currency)
 260         self.quote_currencies = [currency] + self.quote_currencies
 261         self.refresh_balance()
 262
 263     def change_quote_currency(self):
 264         self.quote_currencies = \
 265             self.quote_currencies[1:] + self.quote_currencies[0:1]
 266         self.actuator.set_config_currency(self.quote_currencies[0])
 267         self.refresh_balance()
 268
 269     def refresh_balance(self):
 270         if self.btc_balance is None:
 271             # Price has been discovered before wallet has been loaded
 272             # and server connect... so bail.
 273             return
 274         self.set_balances(self.btc_balance)
 275         self.amount_input_changed(self.amount_input.text())
 276
 277     def set_balances(self, btc_balance):
 278         """Set the bitcoin balance and update the amount label accordingly."""
 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         """Return a string copy of the amount fiat currency the
 304         user has in bitcoins."""
 305         quote_currency = self.quote_currencies[0]
 306         quote_balance = self.exchanger.exchange(btc_balance, quote_currency)
 307         if quote_balance is None:
 308             quote_text = ""
 309         else:
 310             quote_text = "%.2f %s" % ((quote_balance / bitcoin(1)),
 311                                       quote_currency)
 312         return quote_text
 313
 314     def send(self):
 315         if self.actuator.send(self.address_input.text(),
 316                               self.amount_input.text(), self):
 317             self.address_input.setText("")
 318             self.amount_input.setText("")
 319
 320     def check_button_status(self):
 321         """Check that the bitcoin address is valid and that something
 322         is entered in the amount before making the send button clickable."""
 323         if (self.address_input.property("isValid") == True and
 324             len(self.amount_input.text()) > 0):
 325             self.send_button.setDisabled(False)
 326         else:
 327             self.send_button.setDisabled(True)
 328
 329     def address_field_changed(self, address):
 330         if self.actuator.is_valid(address):
 331             self.check_button_status()
 332             self.address_input.setProperty("isValid", True)
 333             self.recompute_style(self.address_input)
 334         else:
 335             self.send_button.setDisabled(True)
 336             self.address_input.setProperty("isValid", False)
 337             self.recompute_style(self.address_input)
 338
 339         if len(address) == 0:
 340             self.address_input.setProperty("isValid", None)
 341             self.recompute_style(self.address_input)
 342
 343     def recompute_style(self, element):
 344         self.style().unpolish(element)
 345         self.style().polish(element)
 346
 347     def copy_address(self):
 348         receive_popup = ReceivePopup(self.receive_button)
 349         self.actuator.copy_address(receive_popup)
 350
 351     def update_completions(self, completions):
 352         self.address_completions.setStringList(completions)
 353
 354     def update_history(self, tx_history):
 355         for tx in tx_history[-10:]:
 356             address = tx["default_label"]
 357             amount = D(tx["value"]) / 10**8
 358             self.history_list.append(address, amount)
 359
 360     def acceptbit(self):
 361         self.actuator.acceptbit(self.quote_currencies[0])
 362
 363     def the_website(self):
 364         webbrowser.open("http://electrum-desktop.com")
 365
 366     def show_about(self):
 367         QMessageBox.about(self, "Electrum",
 368             _("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"))
 369
 370     def show_report_bug(self):
 371         QMessageBox.information(self, "Electrum - " + _("Reporting Bugs"),
 372             _("Email bug reports to %s") % "genjix" + "@" + "riseup.net")
 373
 374     def show_history(self, toggle_state):
 375         if toggle_state:
 376             self.history_list.show()
 377         else:
 378             self.history_list.hide()
 379
 380 class BalanceLabel(QLabel):
 381
 382     SHOW_CONNECTING = 1
 383     SHOW_BALANCE = 2
 384     SHOW_AMOUNT = 3
 385
 386     def __init__(self, change_quote_currency, parent=None):
 387         super(QLabel, self).__init__(_("Connecting..."), parent)
 388         self.change_quote_currency = change_quote_currency
 389         self.state = self.SHOW_CONNECTING
 390         self.balance_text = ""
 391         self.amount_text = ""
 392
 393     def mousePressEvent(self, event):
 394         if self.state != self.SHOW_CONNECTING:
 395             self.change_quote_currency()
 396
 397     def set_balance_text(self, btc_balance, quote_text):
 398         if self.state == self.SHOW_CONNECTING:
 399             self.state = self.SHOW_BALANCE
 400         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)
 401         if self.state == self.SHOW_BALANCE:
 402             self.setText(self.balance_text)
 403
 404     def set_amount_text(self, quote_text):
 405         self.amount_text = "<span style='font-size: 10pt'>%s</span>" % quote_text
 406         if self.state == self.SHOW_AMOUNT:
 407             self.setText(self.amount_text)
 408
 409     def show_balance(self):
 410         if self.state == self.SHOW_AMOUNT:
 411             self.state = self.SHOW_BALANCE
 412             self.setText(self.balance_text)
 413
 414     def show_amount(self):
 415         if self.state == self.SHOW_BALANCE:
 416             self.state = self.SHOW_AMOUNT
 417             self.setText(self.amount_text)
 418
 419 def ok_cancel_buttons(dialog):
 420     row_layout = QHBoxLayout()
 421     row_layout.addStretch(1)
 422     ok_button = QPushButton(_("OK"))
 423     row_layout.addWidget(ok_button)
 424     ok_button.clicked.connect(dialog.accept)
 425     cancel_button = QPushButton(_("Cancel"))
 426     row_layout.addWidget(cancel_button)
 427     cancel_button.clicked.connect(dialog.reject)
 428     return row_layout
 429
 430 class PasswordDialog(QDialog):
 431
 432     def __init__(self, parent):
 433         super(QDialog, self).__init__(parent)
 434
 435         self.setModal(True)
 436
 437         self.password_input = QLineEdit()
 438         self.password_input.setEchoMode(QLineEdit.Password)
 439
 440         main_layout = QVBoxLayout(self)
 441         message = _('Please enter your password')
 442         main_layout.addWidget(QLabel(message))
 443
 444         grid = QGridLayout()
 445         grid.setSpacing(8)
 446         grid.addWidget(QLabel(_('Password')), 1, 0)
 447         grid.addWidget(self.password_input, 1, 1)
 448         main_layout.addLayout(grid)
 449
 450         main_layout.addLayout(ok_cancel_buttons(self))
 451         self.setLayout(main_layout)
 452
 453     def run(self):
 454         if not self.exec_():
 455             return
 456         return unicode(self.password_input.text())
 457
 458 class ReceivePopup(QDialog):
 459
 460     def leaveEvent(self, event):
 461         self.close()
 462
 463     def setup(self, address):
 464         label = QLabel(_("Copied your Bitcoin address to the clipboard!"))
 465         address_display = QLineEdit(address)
 466         address_display.setReadOnly(True)
 467         resize_line_edit_width(address_display, address)
 468
 469         main_layout = QVBoxLayout(self)
 470         main_layout.addWidget(label)
 471         main_layout.addWidget(address_display)
 472
 473         self.setMouseTracking(True)
 474         self.setWindowTitle("Electrum - " + _("Receive Bitcoin payment"))
 475         self.setWindowFlags(Qt.Window|Qt.FramelessWindowHint|Qt.MSWindowsFixedSizeDialogHint)
 476         self.layout().setSizeConstraint(QLayout.SetFixedSize)
 477         #self.setFrameStyle(QFrame.WinPanel|QFrame.Raised)
 478         #self.setAlignment(Qt.AlignCenter)
 479
 480     def popup(self):
 481         parent = self.parent()
 482         top_left_pos = parent.mapToGlobal(parent.rect().bottomLeft())
 483         self.move(top_left_pos)
 484         center_mouse_pos = self.mapToGlobal(self.rect().center())
 485         QCursor.setPos(center_mouse_pos)
 486         self.show()
 487
 488 class MiniActuator:
 489     """Initialize the definitions relating to themes and
 490     sending/recieving bitcoins.
 491     """
 492
 493
 494     def __init__(self, wallet):
 495         """Retrieve the gui theme used in previous session."""
 496         self.wallet = wallet
 497         self.theme_name = self.wallet.theme
 498         self.themes = util.load_theme_paths()
 499
 500     def load_theme(self):
 501         """Load theme retrieved from wallet file."""
 502         try:
 503             theme_prefix, theme_path = self.themes[self.theme_name]
 504         except KeyError:
 505             util.print_error("Theme not found!", self.theme_name)
 506             return
 507         QDir.setCurrent(os.path.join(theme_prefix, theme_path))
 508         with open(rsrc("style.css")) as style_file:
 509             qApp.setStyleSheet(style_file.read())
 510
 511     def theme_names(self):
 512         """Sort themes."""
 513         return sorted(self.themes.keys())
 514
 515     def selected_theme(self):
 516         """Select theme."""
 517         return self.theme_name
 518
 519     def change_theme(self, theme_name):
 520         """Change theme."""
 521         self.wallet.theme = self.theme_name = theme_name
 522         self.load_theme()
 523
 524     def set_configured_currency(self, set_quote_currency):
 525         """Set the inital fiat currency conversion country (USD/EUR/GBP) in
 526         the GUI to what it was set to in the wallet."""
 527         currency = self.wallet.conversion_currency
 528         # currency can be none when Electrum is used for the first
 529         # time and no setting has been created yet.
 530         if currency is not None:
 531             set_quote_currency(currency)
 532
 533     def set_config_currency(self, conversion_currency):
 534         """Change the fiat currency conversion country."""
 535         self.wallet.conversion_currency = conversion_currency
 536
 537     def copy_address(self, receive_popup):
 538         """Copy the wallet addresses into the client."""
 539         addrs = [addr for addr in self.wallet.all_addresses()
 540                  if not self.wallet.is_change(addr)]
 541         # Select most recent addresses from gap limit
 542         addrs = addrs[-self.wallet.gap_limit:]
 543         copied_address = random.choice(addrs)
 544         qApp.clipboard().setText(copied_address)
 545         receive_popup.setup(copied_address)
 546         receive_popup.popup()
 547
 548     def send(self, address, amount, parent_window):
 549         """Send bitcoins to the target address."""
 550         dest_address = self.fetch_destination(address)
 551
 552         if dest_address is None or not self.wallet.is_valid(dest_address):
 553             QMessageBox.warning(parent_window, _('Error'),
 554                 _('Invalid Bitcoin Address') + ':\n' + address, _('OK'))
 555             return False
 556
 557         convert_amount = lambda amount: \
 558             int(D(unicode(amount)) * bitcoin(1))
 559         amount = convert_amount(amount)
 560
 561         if self.wallet.use_encryption:
 562             password_dialog = PasswordDialog(parent_window)
 563             password = password_dialog.run()
 564             if not password:
 565                 return
 566         else:
 567             password = None
 568
 569         fee = 0
 570         # 0.1 BTC = 10000000
 571         if amount < bitcoin(1) / 10:
 572             # 0.001 BTC
 573             fee = bitcoin(1) / 1000
 574
 575         try:
 576             tx = self.wallet.mktx(dest_address, amount, "", password, fee)
 577         except BaseException as error:
 578             QMessageBox.warning(parent_window, _('Error'), str(error), _('OK'))
 579             return False
 580
 581         status, message = self.wallet.sendtx(tx)
 582         if not status:
 583             QMessageBox.warning(parent_window, _('Error'), message, _('OK'))
 584             return False
 585
 586         QMessageBox.information(parent_window, '',
 587             _('Payment sent.') + '\n' + message, _('OK'))
 588         return True
 589
 590     def fetch_destination(self, address):
 591         recipient = unicode(address).strip()
 592
 593         # alias
 594         match1 = re.match("^(|([\w\-\.]+)@)((\w[\w\-]+\.)+[\w\-]+)$",
 595                           recipient)
 596
 597         # label or alias, with address in brackets
 598         match2 = re.match("(.*?)\s*\<([1-9A-HJ-NP-Za-km-z]{26,})\>",
 599                           recipient)
 600
 601         if match1:
 602             dest_address = \
 603                 self.wallet.get_alias(recipient, True,
 604                                       self.show_message, self.question)
 605             return dest_address
 606         elif match2:
 607             return match2.group(2)
 608         else:
 609             return recipient
 610
 611     def is_valid(self, address):
 612         """Check if bitcoin address is valid."""
 613         return self.wallet.is_valid(address)
 614
 615     def acceptbit(self, currency):
 616         master_pubkey = self.wallet.master_public_key.encode("hex")
 617         url = "http://acceptbit.com/mpk/%s/%s" % (master_pubkey, currency)
 618         webbrowser.open(url)
 619
 620     def show_seed_dialog(self):
 621         gui_qt.ElectrumWindow.show_seed_dialog(self.wallet)
 622
 623 class MiniDriver(QObject):
 624
 625     INITIALIZING = 0
 626     CONNECTING = 1
 627     SYNCHRONIZING = 2
 628     READY = 3
 629
 630     def __init__(self, wallet, window):
 631         super(QObject, self).__init__()
 632
 633         self.wallet = wallet
 634         self.window = window
 635
 636         self.wallet.register_callback(self.update_callback)
 637
 638         self.state = None
 639
 640         self.initializing()
 641         self.connect(self, SIGNAL("updatesignal()"), self.update)
 642         self.update_callback()
 643
 644     # This is a hack to workaround that Qt does not like changing the
 645     # window properties from this other thread before the runloop has
 646     # been called from.
 647     def update_callback(self):
 648         self.emit(SIGNAL("updatesignal()"))
 649
 650     def update(self):
 651         if not self.wallet.interface:
 652             self.initializing()
 653         elif not self.wallet.interface.is_connected:
 654             self.connecting()
 655         elif not self.wallet.blocks == -1:
 656             self.connecting()
 657         elif not self.wallet.is_up_to_date:
 658             self.synchronizing()
 659         else:
 660             self.ready()
 661
 662         if self.wallet.up_to_date:
 663             self.update_balance()
 664             self.update_completions()
 665             self.update_history()
 666
 667     def initializing(self):
 668         if self.state == self.INITIALIZING:
 669             return
 670         self.state = self.INITIALIZING
 671         self.window.deactivate()
 672
 673     def connecting(self):
 674         if self.state == self.CONNECTING:
 675             return
 676         self.state = self.CONNECTING
 677         self.window.deactivate()
 678
 679     def synchronizing(self):
 680         if self.state == self.SYNCHRONIZING:
 681             return
 682         self.state = self.SYNCHRONIZING
 683         self.window.deactivate()
 684
 685     def ready(self):
 686         if self.state == self.READY:
 687             return
 688         self.state = self.READY
 689         self.window.activate()
 690
 691     def update_balance(self):
 692         conf_balance, unconf_balance = self.wallet.get_balance()
 693         balance = D(conf_balance + unconf_balance)
 694         self.window.set_balances(balance)
 695
 696     def update_completions(self):
 697         completions = []
 698         for addr, label in self.wallet.labels.items():
 699             if addr in self.wallet.addressbook:
 700                 completions.append("%s <%s>" % (label, addr))
 701         completions = completions + self.wallet.aliases.keys()
 702         self.window.update_completions(completions)
 703
 704     def update_history(self):
 705         tx_history = self.wallet.get_tx_history()
 706         self.window.update_history(tx_history)
 707
 708 if __name__ == "__main__":
 709     app = QApplication(sys.argv)
 710     with open(rsrc("style.css")) as style_file:
 711         app.setStyleSheet(style_file.read())
 712     mini = MiniWindow()
 713     sys.exit(app.exec_())
 714