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         self.mini.hide()
  78         self.expert.show()
  79
  80     def set_url(self, url):
  81         payto, amount, label, message, signature, identity, url = \
  82             self.wallet.parse_url(url, self.show_message, self.show_question)
  83         self.mini.set_payment_fields(payto, amount)
  84
  85     def show_message(self, message):
  86         QMessageBox.information(self.mini, _("Message"), message, _("OK"))
  87
  88     def show_question(self, message):
  89         choice = QMessageBox.question(self.mini, _("Message"), message,
  90                                       QMessageBox.Yes|QMessageBox.No,
  91                                       QMessageBox.No)
  92         return choice == QMessageBox.Yes
  93
  94     def restore_or_create(self):
  95         qt_gui_object = gui_qt.ElectrumGui(self.wallet, self.app)
  96         return qt_gui_object.restore_or_create()
  97
  98 class MiniWindow(QDialog):
  99
 100     def __init__(self, actuator, expand_callback):
 101         super(MiniWindow, self).__init__()
 102
 103         self.actuator = actuator
 104
 105         self.btc_balance = None
 106         self.quote_currencies = ["EUR", "USD", "GBP"]
 107         self.actuator.set_configured_currency(self.set_quote_currency)
 108         self.exchanger = exchange_rate.Exchanger(self)
 109         # Needed because price discovery is done in a different thread
 110         # which needs to be sent back to this main one to update the GUI
 111         self.connect(self, SIGNAL("refresh_balance()"), self.refresh_balance)
 112
 113         self.balance_label = BalanceLabel(self.change_quote_currency)
 114         self.balance_label.setObjectName("balance_label")
 115
 116         self.receive_button = QPushButton(_("&Receive"))
 117         self.receive_button.setObjectName("receive_button")
 118         self.receive_button.setDefault(True)
 119         self.receive_button.clicked.connect(self.copy_address)
 120
 121         # Bitcoin address code
 122         self.address_input = QLineEdit()
 123         self.address_input.setPlaceholderText(_("Enter a Bitcoin address..."))
 124         self.address_input.setObjectName("address_input")
 125
 126
 127         self.address_input.textEdited.connect(self.address_field_changed)
 128         resize_line_edit_width(self.address_input,
 129                                "1BtaFUr3qVvAmwrsuDuu5zk6e4s2rxd2Gy")
 130
 131         self.address_completions = QStringListModel()
 132         address_completer = QCompleter(self.address_input)
 133         address_completer.setCaseSensitivity(False)
 134         address_completer.setModel(self.address_completions)
 135         self.address_input.setCompleter(address_completer)
 136
 137         address_layout = QHBoxLayout()
 138         address_layout.addWidget(self.address_input)
 139
 140         self.amount_input = QLineEdit()
 141         self.amount_input.setPlaceholderText(_("... and amount"))
 142         self.amount_input.setObjectName("amount_input")
 143         # This is changed according to the user's displayed balance
 144         self.amount_validator = QDoubleValidator(self.amount_input)
 145         self.amount_validator.setNotation(QDoubleValidator.StandardNotation)
 146         self.amount_validator.setDecimals(8)
 147         self.amount_input.setValidator(self.amount_validator)
 148
 149         # This removes the very ugly OSX highlighting, please leave this in :D
 150         self.address_input.setAttribute(Qt.WA_MacShowFocusRect, 0)
 151         self.amount_input.setAttribute(Qt.WA_MacShowFocusRect, 0)
 152         self.amount_input.textChanged.connect(self.amount_input_changed)
 153
 154         self.send_button = QPushButton(_("&Send"))
 155         self.send_button.setObjectName("send_button")
 156         self.send_button.setDisabled(True);
 157         self.send_button.clicked.connect(self.send)
 158
 159         main_layout = QGridLayout(self)
 160
 161         main_layout.addWidget(self.balance_label, 0, 0)
 162         main_layout.addWidget(self.receive_button, 0, 1)
 163
 164         main_layout.addWidget(self.address_input, 1, 0, 1, -1)
 165
 166         main_layout.addWidget(self.amount_input, 2, 0)
 167         main_layout.addWidget(self.send_button, 2, 1)
 168
 169         self.history_list = history_widget.HistoryWidget()
 170         self.history_list.setObjectName("history")
 171         self.history_list.hide()
 172         self.history_list.setAlternatingRowColors(True)
 173         main_layout.addWidget(self.history_list, 3, 0, 1, -1)
 174
 175         menubar = QMenuBar()
 176         electrum_menu = menubar.addMenu(_("&Bitcoin"))
 177         self.servers_menu = electrum_menu.addMenu(_("&Servers"))
 178         self.servers_menu.addAction(_("Foo"))
 179         electrum_menu.addSeparator()
 180         brain_seed = electrum_menu.addAction(_("&BrainWallet Info"))
 181         brain_seed.triggered.connect(self.actuator.show_seed_dialog)
 182         quit_option = electrum_menu.addAction(_("&Quit"))
 183         quit_option.triggered.connect(self.actuator.quit)
 184
 185         view_menu = menubar.addMenu(_("&View"))
 186         expert_gui = view_menu.addAction(_("&Pro Mode"))
 187         expert_gui.triggered.connect(expand_callback)
 188         themes_menu = view_menu.addMenu(_("&Themes"))
 189         selected_theme = self.actuator.selected_theme()
 190         theme_group = QActionGroup(self)
 191         for theme_name in self.actuator.theme_names():
 192             theme_action = themes_menu.addAction(theme_name)
 193             theme_action.setCheckable(True)
 194             if selected_theme == theme_name:
 195                 theme_action.setChecked(True)
 196             class SelectThemeFunctor:
 197                 def __init__(self, theme_name, toggle_theme):
 198                     self.theme_name = theme_name
 199                     self.toggle_theme = toggle_theme
 200                 def __call__(self, checked):
 201                     if checked:
 202                         self.toggle_theme(self.theme_name)
 203             delegate = SelectThemeFunctor(theme_name, self.toggle_theme)
 204             theme_action.toggled.connect(delegate)
 205             theme_group.addAction(theme_action)
 206         view_menu.addSeparator()
 207         show_history = view_menu.addAction(_("Show History"))
 208         show_history.setCheckable(True)
 209         show_history.toggled.connect(self.show_history)
 210
 211         help_menu = menubar.addMenu(_("&Help"))
 212         the_website = help_menu.addAction(_("&Website"))
 213         the_website.triggered.connect(self.the_website)
 214         help_menu.addSeparator()
 215         report_bug = help_menu.addAction(_("&Report Bug"))
 216         report_bug.triggered.connect(self.show_report_bug)
 217         show_about = help_menu.addAction(_("&About"))
 218         show_about.triggered.connect(self.show_about)
 219         main_layout.setMenuBar(menubar)
 220
 221         quit_shortcut = QShortcut(QKeySequence("Ctrl+Q"), self)
 222         quit_shortcut.activated.connect(self.close)
 223         close_shortcut = QShortcut(QKeySequence("Ctrl+W"), self)
 224         close_shortcut.activated.connect(self.close)
 225
 226         self.setWindowIcon(QIcon(":electrum.png"))
 227         self.setWindowTitle("Electrum")
 228         self.setWindowFlags(Qt.Window|Qt.MSWindowsFixedSizeDialogHint)
 229         self.layout().setSizeConstraint(QLayout.SetFixedSize)
 230         self.setObjectName("main_window")
 231         self.show()
 232
 233     def toggle_theme(self, theme_name):
 234         old_path = QDir.currentPath()
 235         self.actuator.change_theme(theme_name)
 236         # Recompute style globally
 237         qApp.style().unpolish(self)
 238         qApp.style().polish(self)
 239         QDir.setCurrent(old_path)
 240
 241     def closeEvent(self, event):
 242         super(MiniWindow, self).closeEvent(event)
 243         qApp.quit()
 244
 245     def set_payment_fields(self, dest_address, amount):
 246         self.address_input.setText(dest_address)
 247         self.address_field_changed(dest_address)
 248         self.amount_input.setText(amount)
 249
 250     def activate(self):
 251         pass
 252
 253     def deactivate(self):
 254         pass
 255
 256     def set_quote_currency(self, currency):
 257         assert currency in self.quote_currencies
 258         self.quote_currencies.remove(currency)
 259         self.quote_currencies = [currency] + self.quote_currencies
 260         self.refresh_balance()
 261
 262     def change_quote_currency(self):
 263         self.quote_currencies = \
 264             self.quote_currencies[1:] + self.quote_currencies[0:1]
 265         self.actuator.set_config_currency(self.quote_currencies[0])
 266         self.refresh_balance()
 267
 268     def refresh_balance(self):
 269         if self.btc_balance is None:
 270             # Price has been discovered before wallet has been loaded
 271             # and server connect... so bail.
 272             return
 273         self.set_balances(self.btc_balance)
 274         self.amount_input_changed(self.amount_input.text())
 275
 276     def set_balances(self, btc_balance):
 277         self.btc_balance = btc_balance
 278         quote_text = self.create_quote_text(btc_balance)
 279         if quote_text:
 280             quote_text = "(%s)" % quote_text
 281         btc_balance = "%.2f" % (btc_balance / bitcoin(1))
 282         self.balance_label.set_balance_text(btc_balance, quote_text)
 283         self.setWindowTitle("Electrum - %s BTC" % btc_balance)
 284
 285     def amount_input_changed(self, amount_text):
 286         self.check_button_status()
 287
 288         try:
 289             amount = D(str(amount_text))
 290         except decimal.InvalidOperation:
 291             self.balance_label.show_balance()
 292         else:
 293             quote_text = self.create_quote_text(amount * bitcoin(1))
 294             if quote_text:
 295                 self.balance_label.set_amount_text(quote_text)
 296                 self.balance_label.show_amount()
 297             else:
 298                 self.balance_label.show_balance()
 299
 300     def create_quote_text(self, btc_balance):
 301         quote_currency = self.quote_currencies[0]
 302         quote_balance = self.exchanger.exchange(btc_balance, quote_currency)
 303         if quote_balance is None:
 304             quote_text = ""
 305         else:
 306             quote_text = "%.2f %s" % ((quote_balance / bitcoin(1)),
 307                                       quote_currency)
 308         return quote_text
 309
 310     def send(self):
 311         if self.actuator.send(self.address_input.text(),
 312                               self.amount_input.text(), self):
 313             self.address_input.setText("")
 314             self.amount_input.setText("")
 315
 316     def check_button_status(self):
 317         if (self.address_input.property("isValid") == True and
 318             len(self.amount_input.text()) > 0):
 319             self.send_button.setDisabled(False)
 320         else:
 321             self.send_button.setDisabled(True)
 322
 323     def address_field_changed(self, address):
 324         if self.actuator.is_valid(address):
 325             self.check_button_status()
 326             self.address_input.setProperty("isValid", True)
 327             self.recompute_style(self.address_input)
 328         else:
 329             self.send_button.setDisabled(True)
 330             self.address_input.setProperty("isValid", False)
 331             self.recompute_style(self.address_input)
 332
 333         if len(address) == 0:
 334             self.address_input.setProperty("isValid", None)
 335             self.recompute_style(self.address_input)
 336
 337     def recompute_style(self, element):
 338         self.style().unpolish(element)
 339         self.style().polish(element)
 340
 341     def copy_address(self):
 342         receive_popup = ReceivePopup(self.receive_button)
 343         self.actuator.copy_address(receive_popup)
 344
 345     def update_completions(self, completions):
 346         self.address_completions.setStringList(completions)
 347
 348     def update_history(self, tx_history):
 349         for tx in tx_history[-10:]:
 350             address = tx["default_label"]
 351             amount = D(tx["value"]) / 10**8
 352             self.history_list.append(address, amount)
 353
 354     def acceptbit(self):
 355         self.actuator.acceptbit(self.quote_currencies[0])
 356
 357     def the_website(self):
 358         webbrowser.open("http://electrum-desktop.com")
 359
 360     def show_about(self):
 361         QMessageBox.about(self, "Electrum",
 362             _("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"))
 363
 364     def show_report_bug(self):
 365         QMessageBox.information(self, "Electrum - " + _("Reporting Bugs"),
 366             _("Email bug reports to %s") % "genjix" + "@" + "riseup.net")
 367
 368     def show_history(self, toggle_state):
 369         if toggle_state:
 370             self.history_list.show()
 371         else:
 372             self.history_list.hide()
 373
 374 class BalanceLabel(QLabel):
 375
 376     SHOW_CONNECTING = 1
 377     SHOW_BALANCE = 2
 378     SHOW_AMOUNT = 3
 379
 380     def __init__(self, change_quote_currency, parent=None):
 381         super(QLabel, self).__init__(_("Connecting..."), parent)
 382         self.change_quote_currency = change_quote_currency
 383         self.state = self.SHOW_CONNECTING
 384         self.balance_text = ""
 385         self.amount_text = ""
 386
 387     def mousePressEvent(self, event):
 388         if self.state != self.SHOW_CONNECTING:
 389             self.change_quote_currency()
 390
 391     def set_balance_text(self, btc_balance, quote_text):
 392         if self.state == self.SHOW_CONNECTING:
 393             self.state = self.SHOW_BALANCE
 394         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)
 395         if self.state == self.SHOW_BALANCE:
 396             self.setText(self.balance_text)
 397
 398     def set_amount_text(self, quote_text):
 399         self.amount_text = "<span style='font-size: 10pt'>%s</span>" % quote_text
 400         if self.state == self.SHOW_AMOUNT:
 401             self.setText(self.amount_text)
 402
 403     def show_balance(self):
 404         if self.state == self.SHOW_AMOUNT:
 405             self.state = self.SHOW_BALANCE
 406             self.setText(self.balance_text)
 407
 408     def show_amount(self):
 409         if self.state == self.SHOW_BALANCE:
 410             self.state = self.SHOW_AMOUNT
 411             self.setText(self.amount_text)
 412
 413 def ok_cancel_buttons(dialog):
 414     row_layout = QHBoxLayout()
 415     row_layout.addStretch(1)
 416     ok_button = QPushButton(_("OK"))
 417     row_layout.addWidget(ok_button)
 418     ok_button.clicked.connect(dialog.accept)
 419     cancel_button = QPushButton(_("Cancel"))
 420     row_layout.addWidget(cancel_button)
 421     cancel_button.clicked.connect(dialog.reject)
 422     return row_layout
 423
 424 class PasswordDialog(QDialog):
 425
 426     def __init__(self, parent):
 427         super(QDialog, self).__init__(parent)
 428
 429         self.setModal(True)
 430
 431         self.password_input = QLineEdit()
 432         self.password_input.setEchoMode(QLineEdit.Password)
 433
 434         main_layout = QVBoxLayout(self)
 435         message = _('Please enter your password')
 436         main_layout.addWidget(QLabel(message))
 437
 438         grid = QGridLayout()
 439         grid.setSpacing(8)
 440         grid.addWidget(QLabel(_('Password')), 1, 0)
 441         grid.addWidget(self.password_input, 1, 1)
 442         main_layout.addLayout(grid)
 443
 444         main_layout.addLayout(ok_cancel_buttons(self))
 445         self.setLayout(main_layout)
 446
 447     def run(self):
 448         if not self.exec_():
 449             return
 450         return unicode(self.password_input.text())
 451
 452 class ReceivePopup(QDialog):
 453
 454     def leaveEvent(self, event):
 455         self.close()
 456
 457     def setup(self, address):
 458         label = QLabel(_("Copied your Bitcoin address to the clipboard!"))
 459         address_display = QLineEdit(address)
 460         address_display.setReadOnly(True)
 461         resize_line_edit_width(address_display, address)
 462
 463         main_layout = QVBoxLayout(self)
 464         main_layout.addWidget(label)
 465         main_layout.addWidget(address_display)
 466
 467         self.setMouseTracking(True)
 468         self.setWindowTitle("Electrum - " + _("Receive Bitcoin payment"))
 469         self.setWindowFlags(Qt.Window|Qt.FramelessWindowHint|Qt.MSWindowsFixedSizeDialogHint)
 470         self.layout().setSizeConstraint(QLayout.SetFixedSize)
 471         #self.setFrameStyle(QFrame.WinPanel|QFrame.Raised)
 472         #self.setAlignment(Qt.AlignCenter)
 473
 474     def popup(self):
 475         parent = self.parent()
 476         top_left_pos = parent.mapToGlobal(parent.rect().bottomLeft())
 477         self.move(top_left_pos)
 478         center_mouse_pos = self.mapToGlobal(self.rect().center())
 479         QCursor.setPos(center_mouse_pos)
 480         self.show()
 481
 482 class MiniActuator:
 483     """Initialize the definitions for all the menubar functions and
 484     sending/recieving bitcoins.
 485     """
 486
 487
 488     def __init__(self, wallet):
 489         """Retrieve the gui theme used in previous session."""
 490         self.wallet = wallet
 491         self.theme_name = self.wallet.theme
 492         self.themes = util.load_theme_paths()
 493
 494     def load_theme(self):
 495         """Load theme retrieved from wallet file."""
 496         try:
 497             theme_prefix, theme_path = self.themes[self.theme_name]
 498         except KeyError:
 499             util.print_error("Theme not found!", self.theme_name)
 500             return
 501         QDir.setCurrent(os.path.join(theme_prefix, theme_path))
 502         with open(rsrc("style.css")) as style_file:
 503             qApp.setStyleSheet(style_file.read())
 504
 505     def theme_names(self):
 506         """Sort themes."""
 507         return sorted(self.themes.keys())
 508     def selected_theme(self):
 509         """Select theme."""
 510         return self.theme_name
 511
 512     def change_theme(self, theme_name):
 513         """Change theme."""
 514         self.wallet.theme = self.theme_name = theme_name
 515         self.load_theme()
 516
 517     def set_configured_currency(self, set_quote_currency):
 518         """Set the inital fiat currency conversion country (USD/EUR/GBP) in
 519         the GUI to what it was set to in the wallet."""
 520         currency = self.wallet.conversion_currency
 521         # currency can be none when Electrum is used for the first
 522         # time and no setting has been created yet.
 523         if currency is not None:
 524             set_quote_currency(currency)
 525
 526     def set_config_currency(self, conversion_currency):
 527         """Change the fiat currency conversion country."""
 528         self.wallet.conversion_currency = conversion_currency
 529
 530     def copy_address(self, receive_popup):
 531         """Copy the wallet addresses into the client."""
 532         addrs = [addr for addr in self.wallet.all_addresses()
 533                  if not self.wallet.is_change(addr)]
 534         # Select most recent addresses from gap limit
 535         addrs = addrs[-self.wallet.gap_limit:]
 536         copied_address = random.choice(addrs)
 537         qApp.clipboard().setText(copied_address)
 538         receive_popup.setup(copied_address)
 539         receive_popup.popup()
 540
 541     def send(self, address, amount, parent_window):
 542         """Send bitcoins to the target address."""
 543         dest_address = self.fetch_destination(address)
 544
 545         if dest_address is None or not self.wallet.is_valid(dest_address):
 546             QMessageBox.warning(parent_window, _('Error'),
 547                 _('Invalid Bitcoin Address') + ':\n' + address, _('OK'))
 548             return False
 549
 550         convert_amount = lambda amount: \
 551             int(D(unicode(amount)) * bitcoin(1))
 552         amount = convert_amount(amount)
 553
 554         if self.wallet.use_encryption:
 555             password_dialog = PasswordDialog(parent_window)
 556             password = password_dialog.run()
 557             if not password:
 558                 return
 559         else:
 560             password = None
 561
 562         fee = 0
 563         # 0.1 BTC = 10000000
 564         if amount < bitcoin(1) / 10:
 565             # 0.001 BTC
 566             fee = bitcoin(1) / 1000
 567
 568         try:
 569             tx = self.wallet.mktx(dest_address, amount, "", password, fee)
 570         except BaseException as error:
 571             QMessageBox.warning(parent_window, _('Error'), str(error), _('OK'))
 572             return False
 573
 574         status, message = self.wallet.sendtx(tx)
 575         if not status:
 576             QMessageBox.warning(parent_window, _('Error'), message, _('OK'))
 577             return False
 578
 579         QMessageBox.information(parent_window, '',
 580             _('Payment sent.') + '\n' + message, _('OK'))
 581         return True
 582
 583     def fetch_destination(self, address):
 584         recipient = unicode(address).strip()
 585
 586         # alias
 587         match1 = re.match("^(|([\w\-\.]+)@)((\w[\w\-]+\.)+[\w\-]+)$",
 588                           recipient)
 589
 590         # label or alias, with address in brackets
 591         match2 = re.match("(.*?)\s*\<([1-9A-HJ-NP-Za-km-z]{26,})\>",
 592                           recipient)
 593
 594         if match1:
 595             dest_address = \
 596                 self.wallet.get_alias(recipient, True,
 597                                       self.show_message, self.question)
 598             return dest_address
 599         elif match2:
 600             return match2.group(2)
 601         else:
 602             return recipient
 603
 604     def is_valid(self, address):
 605         """Check if bitcoin address is valid."""
 606         return self.wallet.is_valid(address)
 607
 608     def acceptbit(self, currency):
 609         master_pubkey = self.wallet.master_public_key.encode("hex")
 610         url = "http://acceptbit.com/mpk/%s/%s" % (master_pubkey, currency)
 611         webbrowser.open(url)
 612
 613     def show_seed_dialog(self):
 614         gui_qt.ElectrumWindow.show_seed_dialog(self.wallet)
 615
 616     def quit(self):
 617         sys.exit(0)
 618
 619 class MiniDriver(QObject):
 620
 621     INITIALIZING = 0
 622     CONNECTING = 1
 623     SYNCHRONIZING = 2
 624     READY = 3
 625
 626     def __init__(self, wallet, window):
 627         super(QObject, self).__init__()
 628
 629         self.wallet = wallet
 630         self.window = window
 631
 632         self.wallet.register_callback(self.update_callback)
 633
 634         self.state = None
 635
 636         self.initializing()
 637         self.connect(self, SIGNAL("updatesignal()"), self.update)
 638         self.update_callback()
 639
 640     # This is a hack to workaround that Qt does not like changing the
 641     # window properties from this other thread before the runloop has
 642     # been called from.
 643     def update_callback(self):
 644         self.emit(SIGNAL("updatesignal()"))
 645
 646     def update(self):
 647         if not self.wallet.interface:
 648             self.initializing()
 649         elif not self.wallet.interface.is_connected:
 650             self.connecting()
 651         elif not self.wallet.blocks == -1:
 652             self.connecting()
 653         elif not self.wallet.is_up_to_date:
 654             self.synchronizing()
 655         else:
 656             self.ready()
 657
 658         if self.wallet.up_to_date:
 659             self.update_balance()
 660             self.update_completions()
 661             self.update_history()
 662
 663     def initializing(self):
 664         if self.state == self.INITIALIZING:
 665             return
 666         self.state = self.INITIALIZING
 667         self.window.deactivate()
 668
 669     def connecting(self):
 670         if self.state == self.CONNECTING:
 671             return
 672         self.state = self.CONNECTING
 673         self.window.deactivate()
 674
 675     def synchronizing(self):
 676         if self.state == self.SYNCHRONIZING:
 677             return
 678         self.state = self.SYNCHRONIZING
 679         self.window.deactivate()
 680
 681     def ready(self):
 682         if self.state == self.READY:
 683             return
 684         self.state = self.READY
 685         self.window.activate()
 686
 687     def update_balance(self):
 688         conf_balance, unconf_balance = self.wallet.get_balance()
 689         balance = D(conf_balance + unconf_balance)
 690         self.window.set_balances(balance)
 691
 692     def update_completions(self):
 693         completions = []
 694         for addr, label in self.wallet.labels.items():
 695             if addr in self.wallet.addressbook:
 696                 completions.append("%s <%s>" % (label, addr))
 697         completions = completions + self.wallet.aliases.keys()
 698         self.window.update_completions(completions)
 699
 700     def update_history(self):
 701         tx_history = self.wallet.get_tx_history()
 702         self.window.update_history(tx_history)
 703
 704 if __name__ == "__main__":
 705     app = QApplication(sys.argv)
 706     with open(rsrc("style.css")) as style_file:
 707         app.setStyleSheet(style_file.read())
 708     mini = MiniWindow()
 709     sys.exit(app.exec_())
 710