lib/gui_lite.py

   1 import sys
   2
   3 # Let's do some dep checking and handle missing ones gracefully
   4 try:
   5     from PyQt4.QtCore import *
   6     from PyQt4.QtGui import *
   7 except ImportError:
   8     print "You need to have PyQT installed to run Electrum in graphical mode."
   9     print "If you have pip installed try 'sudo pip install pyqt' if you are on Debian/Ubuntu try 'sudo apt-get install python-qt4'."
  10     sys.exit(0)
  11
  12
  13 qtVersion = qVersion()
  14 if not(int(qtVersion[0]) >= 4 and int(qtVersion[2]) >= 7):
  15     app = QApplication(sys.argv)
  16     QMessageBox.warning(None,"Could not start Lite GUI.", "Electrum was unable to load the 'Lite GUI' because it needs Qt version >= 4.7.\nPlease use the 'Qt' GUI")
  17     sys.exit(0)
  18
  19
  20
  21 from decimal import Decimal as D
  22 from interface import DEFAULT_SERVERS
  23 from util import get_resource_path as rsrc
  24 from i18n import _
  25 import decimal
  26 import exchange_rate
  27 import os.path
  28 import random
  29 import re
  30 import time
  31 import wallet
  32 import webbrowser
  33 import history_widget
  34 import util
  35
  36 import gui_qt
  37 import shutil
  38
  39 bitcoin = lambda v: v * 100000000
  40
  41 def IconButton(filename, parent=None):
  42     pixmap = QPixmap(filename)
  43     icon = QIcon(pixmap)
  44     return QPushButton(icon, "", parent)
  45
  46 class Timer(QThread):
  47     def run(self):
  48         while True:
  49             self.emit(SIGNAL('timersignal'))
  50             time.sleep(0.5)
  51
  52 def resize_line_edit_width(line_edit, text_input):
  53     metrics = QFontMetrics(qApp.font())
  54     # Create an extra character to add some space on the end
  55     text_input += "A"
  56     line_edit.setMinimumWidth(metrics.width(text_input))
  57
  58 class ElectrumGui(QObject):
  59
  60     def __init__(self, wallet, config):
  61         super(QObject, self).__init__()
  62
  63         self.wallet = wallet
  64         self.config = config
  65         self.app = QApplication(sys.argv)
  66
  67     def main(self, url):
  68         actuator = MiniActuator(self.wallet)
  69         self.connect(self, SIGNAL("updateservers()"),
  70                      actuator.update_servers_list)
  71         # Should probably not modify the current path but instead
  72         # change the behaviour of rsrc(...)
  73         old_path = QDir.currentPath()
  74         actuator.load_theme()
  75
  76         self.mini = MiniWindow(actuator, self.expand, self.config)
  77         driver = MiniDriver(self.wallet, self.mini)
  78
  79         # Reset path back to original value now that loading the GUI
  80         # is completed.
  81         QDir.setCurrent(old_path)
  82
  83         if url:
  84             self.set_url(url)
  85
  86         timer = Timer()
  87         timer.start()
  88         self.expert = gui_qt.ElectrumWindow(self.wallet, self.config)
  89         self.expert.app = self.app
  90         self.expert.connect_slots(timer)
  91         self.expert.update_wallet()
  92         self.app.exec_()
  93
  94     def server_list_changed(self):
  95         self.emit(SIGNAL("updateservers()"))
  96
  97     def expand(self):
  98         """Hide the lite mode window and show pro-mode."""
  99         self.mini.hide()
 100         self.expert.show()
 101
 102     def set_url(self, url):
 103         payto, amount, label, message, signature, identity, url = \
 104             self.wallet.parse_url(url, self.show_message, self.show_question)
 105         self.mini.set_payment_fields(payto, amount)
 106
 107     def show_message(self, message):
 108         QMessageBox.information(self.mini, _("Message"), message, _("OK"))
 109
 110     def show_question(self, message):
 111         choice = QMessageBox.question(self.mini, _("Message"), message,
 112                                       QMessageBox.Yes|QMessageBox.No,
 113                                       QMessageBox.No)
 114         return choice == QMessageBox.Yes
 115
 116     def restore_or_create(self):
 117         qt_gui_object = gui_qt.ElectrumGui(self.wallet, self.app)
 118         return qt_gui_object.restore_or_create()
 119
 120 class MiniWindow(QDialog):
 121
 122     def __init__(self, actuator, expand_callback, config):
 123         super(MiniWindow, self).__init__()
 124
 125         self.actuator = actuator
 126         self.config = config
 127
 128         self.btc_balance = None
 129         self.quote_currencies = ["EUR", "USD", "GBP"]
 130         self.actuator.set_configured_currency(self.set_quote_currency)
 131         self.exchanger = exchange_rate.Exchanger(self)
 132         # Needed because price discovery is done in a different thread
 133         # which needs to be sent back to this main one to update the GUI
 134         self.connect(self, SIGNAL("refresh_balance()"), self.refresh_balance)
 135
 136         self.balance_label = BalanceLabel(self.change_quote_currency)
 137         self.balance_label.setObjectName("balance_label")
 138
 139         self.receive_button = QPushButton(_("&Receive"))
 140         self.receive_button.setObjectName("receive_button")
 141         self.receive_button.setDefault(True)
 142         self.receive_button.clicked.connect(self.copy_address)
 143
 144         # Bitcoin address code
 145         self.address_input = QLineEdit()
 146         self.address_input.setPlaceholderText(_("Enter a Bitcoin address..."))
 147         self.address_input.setObjectName("address_input")
 148
 149
 150         self.address_input.textEdited.connect(self.address_field_changed)
 151         resize_line_edit_width(self.address_input,
 152                                "1BtaFUr3qVvAmwrsuDuu5zk6e4s2rxd2Gy")
 153
 154         self.address_completions = QStringListModel()
 155         address_completer = QCompleter(self.address_input)
 156         address_completer.setCaseSensitivity(False)
 157         address_completer.setModel(self.address_completions)
 158         self.address_input.setCompleter(address_completer)
 159
 160         address_layout = QHBoxLayout()
 161         address_layout.addWidget(self.address_input)
 162
 163         self.amount_input = QLineEdit()
 164         self.amount_input.setPlaceholderText(_("... and amount"))
 165         self.amount_input.setObjectName("amount_input")
 166         # This is changed according to the user's displayed balance
 167         self.amount_validator = QDoubleValidator(self.amount_input)
 168         self.amount_validator.setNotation(QDoubleValidator.StandardNotation)
 169         self.amount_validator.setDecimals(8)
 170         self.amount_input.setValidator(self.amount_validator)
 171
 172         # This removes the very ugly OSX highlighting, please leave this in :D
 173         self.address_input.setAttribute(Qt.WA_MacShowFocusRect, 0)
 174         self.amount_input.setAttribute(Qt.WA_MacShowFocusRect, 0)
 175         self.amount_input.textChanged.connect(self.amount_input_changed)
 176
 177         self.send_button = QPushButton(_("&Send"))
 178         self.send_button.setObjectName("send_button")
 179         self.send_button.setDisabled(True);
 180         self.send_button.clicked.connect(self.send)
 181
 182         main_layout = QGridLayout(self)
 183
 184         main_layout.addWidget(self.balance_label, 0, 0)
 185         main_layout.addWidget(self.receive_button, 0, 1)
 186
 187         main_layout.addWidget(self.address_input, 1, 0, 1, -1)
 188
 189         main_layout.addWidget(self.amount_input, 2, 0)
 190         main_layout.addWidget(self.send_button, 2, 1)
 191
 192         self.history_list = history_widget.HistoryWidget()
 193         self.history_list.setObjectName("history")
 194         self.history_list.hide()
 195         self.history_list.setAlternatingRowColors(True)
 196         main_layout.addWidget(self.history_list, 3, 0, 1, -1)
 197
 198         menubar = QMenuBar()
 199         electrum_menu = menubar.addMenu(_("&Bitcoin"))
 200
 201         servers_menu = electrum_menu.addMenu(_("&Servers"))
 202         servers_group = QActionGroup(self)
 203         self.actuator.set_servers_gui_stuff(servers_menu, servers_group)
 204         self.actuator.populate_servers_menu()
 205         electrum_menu.addSeparator()
 206
 207         brain_seed = electrum_menu.addAction(_("&BrainWallet Info"))
 208         brain_seed.triggered.connect(self.actuator.show_seed_dialog)
 209         quit_option = electrum_menu.addAction(_("&Quit"))
 210         quit_option.triggered.connect(self.close)
 211
 212         view_menu = menubar.addMenu(_("&View"))
 213         extra_menu = menubar.addMenu(_("&Extra"))
 214
 215         backup_wallet = extra_menu.addAction( _("&Create wallet backup"))
 216         backup_wallet.triggered.connect(self.backup_wallet)
 217
 218         expert_gui = view_menu.addAction(_("&Pro Mode"))
 219         expert_gui.triggered.connect(expand_callback)
 220         themes_menu = view_menu.addMenu(_("&Themes"))
 221         selected_theme = self.actuator.selected_theme()
 222         theme_group = QActionGroup(self)
 223         for theme_name in self.actuator.theme_names():
 224             theme_action = themes_menu.addAction(theme_name)
 225             theme_action.setCheckable(True)
 226             if selected_theme == theme_name:
 227                 theme_action.setChecked(True)
 228             class SelectThemeFunctor:
 229                 def __init__(self, theme_name, toggle_theme):
 230                     self.theme_name = theme_name
 231                     self.toggle_theme = toggle_theme
 232                 def __call__(self, checked):
 233                     if checked:
 234                         self.toggle_theme(self.theme_name)
 235             delegate = SelectThemeFunctor(theme_name, self.toggle_theme)
 236             theme_action.toggled.connect(delegate)
 237             theme_group.addAction(theme_action)
 238         view_menu.addSeparator()
 239         show_history = view_menu.addAction(_("Show History"))
 240         show_history.setCheckable(True)
 241         show_history.toggled.connect(self.show_history)
 242
 243         help_menu = menubar.addMenu(_("&Help"))
 244         the_website = help_menu.addAction(_("&Website"))
 245         the_website.triggered.connect(self.the_website)
 246         help_menu.addSeparator()
 247         report_bug = help_menu.addAction(_("&Report Bug"))
 248         report_bug.triggered.connect(self.show_report_bug)
 249         show_about = help_menu.addAction(_("&About"))
 250         show_about.triggered.connect(self.show_about)
 251         main_layout.setMenuBar(menubar)
 252
 253         quit_shortcut = QShortcut(QKeySequence("Ctrl+Q"), self)
 254         quit_shortcut.activated.connect(self.close)
 255         close_shortcut = QShortcut(QKeySequence("Ctrl+W"), self)
 256         close_shortcut.activated.connect(self.close)
 257
 258         g = self.config.get("winpos-lite",[4, 25, 351, 149])
 259         self.setGeometry(g[0], g[1], g[2], g[3])
 260
 261         show_hist = self.config.get("gui_show_history",False)
 262         show_history.setChecked(show_hist)
 263         self.show_history(show_hist)
 264
 265         self.setWindowIcon(QIcon(":electrum.png"))
 266         self.setWindowTitle("Electrum")
 267         self.setWindowFlags(Qt.Window|Qt.MSWindowsFixedSizeDialogHint)
 268         self.layout().setSizeConstraint(QLayout.SetFixedSize)
 269         self.setObjectName("main_window")
 270         self.show()
 271
 272     def toggle_theme(self, theme_name):
 273         old_path = QDir.currentPath()
 274         self.actuator.change_theme(theme_name)
 275         # Recompute style globally
 276         qApp.style().unpolish(self)
 277         qApp.style().polish(self)
 278         QDir.setCurrent(old_path)
 279
 280     def closeEvent(self, event):
 281         g = self.geometry()
 282         self.config.set_key("winpos-lite", [g.left(),g.top(),g.width(),g.height()],True)
 283         self.config.set_key("history", self.history_list.isVisible(),True)
 284
 285         super(MiniWindow, self).closeEvent(event)
 286         qApp.quit()
 287
 288     def set_payment_fields(self, dest_address, amount):
 289         self.address_input.setText(dest_address)
 290         self.address_field_changed(dest_address)
 291         self.amount_input.setText(amount)
 292
 293     def activate(self):
 294         pass
 295
 296     def deactivate(self):
 297         pass
 298
 299     def set_quote_currency(self, currency):
 300         """Set and display the fiat currency country."""
 301         assert currency in self.quote_currencies
 302         self.quote_currencies.remove(currency)
 303         self.quote_currencies.insert(0, currency)
 304         self.refresh_balance()
 305
 306     def change_quote_currency(self):
 307         self.quote_currencies = \
 308             self.quote_currencies[1:] + self.quote_currencies[0:1]
 309         self.actuator.set_config_currency(self.quote_currencies[0])
 310         self.refresh_balance()
 311
 312     def refresh_balance(self):
 313         if self.btc_balance is None:
 314             # Price has been discovered before wallet has been loaded
 315             # and server connect... so bail.
 316             return
 317         self.set_balances(self.btc_balance)
 318         self.amount_input_changed(self.amount_input.text())
 319
 320     def set_balances(self, btc_balance):
 321         """Set the bitcoin balance and update the amount label accordingly."""
 322         self.btc_balance = btc_balance
 323         quote_text = self.create_quote_text(btc_balance)
 324         if quote_text:
 325             quote_text = "(%s)" % quote_text
 326         btc_balance = "%.2f" % (btc_balance / bitcoin(1))
 327         self.balance_label.set_balance_text(btc_balance, quote_text)
 328         self.setWindowTitle("Electrum - %s BTC" % btc_balance)
 329
 330     def amount_input_changed(self, amount_text):
 331         """Update the number of bitcoins displayed."""
 332         self.check_button_status()
 333
 334         try:
 335             amount = D(str(amount_text))
 336         except decimal.InvalidOperation:
 337             self.balance_label.show_balance()
 338         else:
 339             quote_text = self.create_quote_text(amount * bitcoin(1))
 340             if quote_text:
 341                 self.balance_label.set_amount_text(quote_text)
 342                 self.balance_label.show_amount()
 343             else:
 344                 self.balance_label.show_balance()
 345
 346     def create_quote_text(self, btc_balance):
 347         """Return a string copy of the amount fiat currency the
 348         user has in bitcoins."""
 349         quote_currency = self.quote_currencies[0]
 350         quote_balance = self.exchanger.exchange(btc_balance, quote_currency)
 351         if quote_balance is None:
 352             quote_text = ""
 353         else:
 354             quote_text = "%.2f %s" % ((quote_balance / bitcoin(1)),
 355                                       quote_currency)
 356         return quote_text
 357
 358     def send(self):
 359         if self.actuator.send(self.address_input.text(),
 360                               self.amount_input.text(), self):
 361             self.address_input.setText("")
 362             self.amount_input.setText("")
 363
 364     def check_button_status(self):
 365         """Check that the bitcoin address is valid and that something
 366         is entered in the amount before making the send button clickable."""
 367         try:
 368             value = D(str(self.amount_input.text())) * 10**8
 369         except decimal.InvalidOperation:
 370             value = None
 371         # self.address_input.property(...) returns a qVariant, not a bool.
 372         # The == is needed to properly invoke a comparison.
 373         if (self.address_input.property("isValid") == True and
 374             value is not None and 0 < value <= self.btc_balance):
 375             self.send_button.setDisabled(False)
 376         else:
 377             self.send_button.setDisabled(True)
 378
 379     def address_field_changed(self, address):
 380         if self.actuator.is_valid(address):
 381             self.check_button_status()
 382             self.address_input.setProperty("isValid", True)
 383             self.recompute_style(self.address_input)
 384         else:
 385             self.send_button.setDisabled(True)
 386             self.address_input.setProperty("isValid", False)
 387             self.recompute_style(self.address_input)
 388
 389         if len(address) == 0:
 390             self.address_input.setProperty("isValid", None)
 391             self.recompute_style(self.address_input)
 392
 393     def recompute_style(self, element):
 394         self.style().unpolish(element)
 395         self.style().polish(element)
 396
 397     def copy_address(self):
 398         receive_popup = ReceivePopup(self.receive_button)
 399         self.actuator.copy_address(receive_popup)
 400
 401     def update_completions(self, completions):
 402         self.address_completions.setStringList(completions)
 403
 404     def update_history(self, tx_history):
 405         for tx in tx_history[-10:]:
 406             address = tx["default_label"]
 407             amount = D(tx["value"]) / 10**8
 408             self.history_list.append(address, amount)
 409
 410     def acceptbit(self):
 411         self.actuator.acceptbit(self.quote_currencies[0])
 412
 413     def the_website(self):
 414         webbrowser.open("http://electrum-desktop.com")
 415
 416     def show_about(self):
 417         QMessageBox.about(self, "Electrum",
 418             _("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"))
 419
 420     def show_report_bug(self):
 421         QMessageBox.information(self, "Electrum - " + _("Reporting Bugs"),
 422             _("Email bug reports to %s") % "genjix" + "@" + "riseup.net")
 423
 424     def show_history(self, toggle_state):
 425         if toggle_state:
 426             self.history_list.show()
 427         else:
 428             self.history_list.hide()
 429
 430     def backup_wallet(self):
 431         try:
 432           folderName = QFileDialog.getExistingDirectory(QWidget(), 'Select folder to save a copy of your wallet to', os.path.expanduser('~/'))
 433           if folderName:
 434             sourceFile = util.user_dir() + '/electrum.dat'
 435             shutil.copy2(sourceFile, str(folderName))
 436             QMessageBox.information(None,"Wallet backup created", "A copy of your wallet file was created in '%s'" % str(folderName))
 437         except (IOError, os.error), reason:
 438           QMessageBox.critical(None,"Unable to create backup", "Electrum was unable copy your wallet file to the specified location.\n" + str(reason))
 439
 440
 441
 442
 443 class BalanceLabel(QLabel):
 444
 445     SHOW_CONNECTING = 1
 446     SHOW_BALANCE = 2
 447     SHOW_AMOUNT = 3
 448
 449     def __init__(self, change_quote_currency, parent=None):
 450         super(QLabel, self).__init__(_("Connecting..."), parent)
 451         self.change_quote_currency = change_quote_currency
 452         self.state = self.SHOW_CONNECTING
 453         self.balance_text = ""
 454         self.amount_text = ""
 455
 456     def mousePressEvent(self, event):
 457         """Change the fiat currency selection if window background is clicked."""
 458         if self.state != self.SHOW_CONNECTING:
 459             self.change_quote_currency()
 460
 461     def set_balance_text(self, btc_balance, quote_text):
 462         """Set the amount of bitcoins in the gui."""
 463         if self.state == self.SHOW_CONNECTING:
 464             self.state = self.SHOW_BALANCE
 465         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)
 466         if self.state == self.SHOW_BALANCE:
 467             self.setText(self.balance_text)
 468
 469     def set_amount_text(self, quote_text):
 470         self.amount_text = "<span style='font-size: 10pt'>%s</span>" % quote_text
 471         if self.state == self.SHOW_AMOUNT:
 472             self.setText(self.amount_text)
 473
 474     def show_balance(self):
 475         if self.state == self.SHOW_AMOUNT:
 476             self.state = self.SHOW_BALANCE
 477             self.setText(self.balance_text)
 478
 479     def show_amount(self):
 480         if self.state == self.SHOW_BALANCE:
 481             self.state = self.SHOW_AMOUNT
 482             self.setText(self.amount_text)
 483
 484 def ok_cancel_buttons(dialog):
 485     row_layout = QHBoxLayout()
 486     row_layout.addStretch(1)
 487     ok_button = QPushButton(_("OK"))
 488     row_layout.addWidget(ok_button)
 489     ok_button.clicked.connect(dialog.accept)
 490     cancel_button = QPushButton(_("Cancel"))
 491     row_layout.addWidget(cancel_button)
 492     cancel_button.clicked.connect(dialog.reject)
 493     return row_layout
 494
 495 class PasswordDialog(QDialog):
 496
 497     def __init__(self, parent):
 498         super(QDialog, self).__init__(parent)
 499
 500         self.setModal(True)
 501
 502         self.password_input = QLineEdit()
 503         self.password_input.setEchoMode(QLineEdit.Password)
 504
 505         main_layout = QVBoxLayout(self)
 506         message = _('Please enter your password')
 507         main_layout.addWidget(QLabel(message))
 508
 509         grid = QGridLayout()
 510         grid.setSpacing(8)
 511         grid.addWidget(QLabel(_('Password')), 1, 0)
 512         grid.addWidget(self.password_input, 1, 1)
 513         main_layout.addLayout(grid)
 514
 515         main_layout.addLayout(ok_cancel_buttons(self))
 516         self.setLayout(main_layout)
 517
 518     def run(self):
 519         if not self.exec_():
 520             return
 521         return unicode(self.password_input.text())
 522
 523 class ReceivePopup(QDialog):
 524
 525     def leaveEvent(self, event):
 526         self.close()
 527
 528     def setup(self, address):
 529         label = QLabel(_("Copied your Bitcoin address to the clipboard!"))
 530         address_display = QLineEdit(address)
 531         address_display.setReadOnly(True)
 532         resize_line_edit_width(address_display, address)
 533
 534         main_layout = QVBoxLayout(self)
 535         main_layout.addWidget(label)
 536         main_layout.addWidget(address_display)
 537
 538         self.setMouseTracking(True)
 539         self.setWindowTitle("Electrum - " + _("Receive Bitcoin payment"))
 540         self.setWindowFlags(Qt.Window|Qt.FramelessWindowHint|
 541                             Qt.MSWindowsFixedSizeDialogHint)
 542         self.layout().setSizeConstraint(QLayout.SetFixedSize)
 543         #self.setFrameStyle(QFrame.WinPanel|QFrame.Raised)
 544         #self.setAlignment(Qt.AlignCenter)
 545
 546     def popup(self):
 547         parent = self.parent()
 548         top_left_pos = parent.mapToGlobal(parent.rect().bottomLeft())
 549         self.move(top_left_pos)
 550         center_mouse_pos = self.mapToGlobal(self.rect().center())
 551         QCursor.setPos(center_mouse_pos)
 552         self.show()
 553
 554 class MiniActuator:
 555     """Initialize the definitions relating to themes and
 556     sending/recieving bitcoins."""
 557
 558
 559     def __init__(self, wallet):
 560         """Retrieve the gui theme used in previous session."""
 561         self.wallet = wallet
 562         self.theme_name = self.wallet.config.get('litegui_theme','Cleanlook')
 563         self.themes = util.load_theme_paths()
 564
 565     def load_theme(self):
 566         """Load theme retrieved from wallet file."""
 567         try:
 568             theme_prefix, theme_path = self.themes[self.theme_name]
 569         except KeyError:
 570             util.print_error("Theme not found!", self.theme_name)
 571             return
 572         QDir.setCurrent(os.path.join(theme_prefix, theme_path))
 573         with open(rsrc("style.css")) as style_file:
 574             qApp.setStyleSheet(style_file.read())
 575
 576     def theme_names(self):
 577         """Sort themes."""
 578         return sorted(self.themes.keys())
 579
 580     def selected_theme(self):
 581         """Select theme."""
 582         return self.theme_name
 583
 584     def change_theme(self, theme_name):
 585         """Change theme."""
 586         self.theme_name = theme_name
 587         self.wallet.config.set_key('litegui_theme',theme_name)
 588         self.load_theme()
 589
 590     def set_configured_currency(self, set_quote_currency):
 591         """Set the inital fiat currency conversion country (USD/EUR/GBP) in
 592         the GUI to what it was set to in the wallet."""
 593         currency = self.wallet.config.get('conversion_currency')
 594         # currency can be none when Electrum is used for the first
 595         # time and no setting has been created yet.
 596         if currency is not None:
 597             set_quote_currency(currency)
 598
 599     def set_config_currency(self, conversion_currency):
 600         """Change the wallet fiat currency country."""
 601         self.wallet.config.set_key('conversion_currency',conversion_currency,True)
 602
 603     def set_servers_gui_stuff(self, servers_menu, servers_group):
 604         self.servers_menu = servers_menu
 605         self.servers_group = servers_group
 606
 607     def populate_servers_menu(self):
 608         interface = self.wallet.interface
 609         if not interface.servers:
 610             print "No servers loaded yet."
 611             self.servers_list = []
 612             for server_string in DEFAULT_SERVERS:
 613                 host, port, protocol = server_string.split(':')
 614                 transports = [(protocol,port)]
 615                 self.servers_list.append((host, transports))
 616         else:
 617             print "Servers loaded."
 618             self.servers_list = interface.servers
 619         server_names = [details[0] for details in self.servers_list]
 620         current_server = interface.server.split(":")[0]
 621         for server_name in server_names:
 622             server_action = self.servers_menu.addAction(server_name)
 623             server_action.setCheckable(True)
 624             if server_name == current_server:
 625                 server_action.setChecked(True)
 626             class SelectServerFunctor:
 627                 def __init__(self, server_name, server_selected):
 628                     self.server_name = server_name
 629                     self.server_selected = server_selected
 630                 def __call__(self, checked):
 631                     if checked:
 632                         # call server_selected
 633                         self.server_selected(self.server_name)
 634             delegate = SelectServerFunctor(server_name, self.server_selected)
 635             server_action.toggled.connect(delegate)
 636             self.servers_group.addAction(server_action)
 637
 638     def update_servers_list(self):
 639         # Clear servers_group
 640         for action in self.servers_group.actions():
 641             self.servers_group.removeAction(action)
 642         self.populate_servers_menu()
 643
 644     def server_selected(self, server_name):
 645         match = [transports for (host, transports) in self.servers_list
 646                  if host == server_name]
 647         assert len(match) == 1
 648         match = match[0]
 649         # Default to TCP if available else use anything
 650         # TODO: protocol should be selectable.
 651         tcp_port = [port for (protocol, port) in match if protocol == "t"]
 652         if len(tcp_port) == 0:
 653             protocol = match[0][0]
 654             port = match[0][1]
 655         else:
 656             protocol = "t"
 657             port = tcp_port[0]
 658         server_line = "%s:%s:%s" % (server_name, port, protocol)
 659
 660         # Should this have exception handling?
 661         self.wallet.set_server(server_line, self.config.get(["proxy"]))
 662
 663     def copy_address(self, receive_popup):
 664         """Copy the wallet addresses into the client."""
 665         addrs = [addr for addr in self.wallet.all_addresses()
 666                  if not self.wallet.is_change(addr)]
 667         # Select most recent addresses from gap limit
 668         addrs = addrs[-self.wallet.gap_limit:]
 669         copied_address = random.choice(addrs)
 670         qApp.clipboard().setText(copied_address)
 671         receive_popup.setup(copied_address)
 672         receive_popup.popup()
 673
 674     def send(self, address, amount, parent_window):
 675         """Send bitcoins to the target address."""
 676         dest_address = self.fetch_destination(address)
 677
 678         if dest_address is None or not self.wallet.is_valid(dest_address):
 679             QMessageBox.warning(parent_window, _('Error'),
 680                 _('Invalid Bitcoin Address') + ':\n' + address, _('OK'))
 681             return False
 682
 683         convert_amount = lambda amount: \
 684             int(D(unicode(amount)) * bitcoin(1))
 685         amount = convert_amount(amount)
 686
 687         if self.wallet.use_encryption:
 688             password_dialog = PasswordDialog(parent_window)
 689             password = password_dialog.run()
 690             if not password:
 691                 return
 692         else:
 693             password = None
 694
 695         fee = 0
 696         # 0.1 BTC = 10000000
 697         if amount < bitcoin(1) / 10:
 698             # 0.001 BTC
 699             fee = bitcoin(1) / 1000
 700
 701         try:
 702             tx = self.wallet.mktx(dest_address, amount, "", password, fee)
 703         except BaseException as error:
 704             QMessageBox.warning(parent_window, _('Error'), str(error), _('OK'))
 705             return False
 706
 707         status, message = self.wallet.sendtx(tx)
 708         if not status:
 709             import tempfile
 710             dumpf = tempfile.NamedTemporaryFile(delete=False)
 711             dumpf.write(tx)
 712             dumpf.close()
 713             print "Dumped error tx to", dumpf.name
 714             QMessageBox.warning(parent_window, _('Error'), message, _('OK'))
 715             return False
 716
 717         QMessageBox.information(parent_window, '',
 718             _('Payment sent.') + '\n' + message, _('OK'))
 719         return True
 720
 721     def fetch_destination(self, address):
 722         recipient = unicode(address).strip()
 723
 724         # alias
 725         match1 = re.match("^(|([\w\-\.]+)@)((\w[\w\-]+\.)+[\w\-]+)$",
 726                           recipient)
 727
 728         # label or alias, with address in brackets
 729         match2 = re.match("(.*?)\s*\<([1-9A-HJ-NP-Za-km-z]{26,})\>",
 730                           recipient)
 731
 732         if match1:
 733             dest_address = \
 734                 self.wallet.get_alias(recipient, True,
 735                                       self.show_message, self.question)
 736             return dest_address
 737         elif match2:
 738             return match2.group(2)
 739         else:
 740             return recipient
 741
 742     def is_valid(self, address):
 743         """Check if bitcoin address is valid."""
 744         return self.wallet.is_valid(address)
 745
 746     def acceptbit(self, currency):
 747         master_pubkey = self.wallet.master_public_key.encode("hex")
 748         url = "http://acceptbit.com/mpk/%s/%s" % (master_pubkey, currency)
 749         webbrowser.open(url)
 750
 751     def show_seed_dialog(self):
 752         gui_qt.ElectrumWindow.show_seed_dialog(self.wallet)
 753
 754 class MiniDriver(QObject):
 755
 756     INITIALIZING = 0
 757     CONNECTING = 1
 758     SYNCHRONIZING = 2
 759     READY = 3
 760
 761     def __init__(self, wallet, window):
 762         super(QObject, self).__init__()
 763
 764         self.wallet = wallet
 765         self.window = window
 766
 767         self.wallet.register_callback(self.update_callback)
 768
 769         self.state = None
 770
 771         self.initializing()
 772         self.connect(self, SIGNAL("updatesignal()"), self.update)
 773         self.update_callback()
 774
 775     # This is a hack to workaround that Qt does not like changing the
 776     # window properties from this other thread before the runloop has
 777     # been called from.
 778     def update_callback(self):
 779         self.emit(SIGNAL("updatesignal()"))
 780
 781     def update(self):
 782         if not self.wallet.interface:
 783             self.initializing()
 784         elif not self.wallet.interface.is_connected:
 785             self.connecting()
 786         elif not self.wallet.blocks == -1:
 787             self.connecting()
 788         elif not self.wallet.is_up_to_date:
 789             self.synchronizing()
 790         else:
 791             self.ready()
 792
 793         if self.wallet.up_to_date:
 794             self.update_balance()
 795             self.update_completions()
 796             self.update_history()
 797
 798     def initializing(self):
 799         if self.state == self.INITIALIZING:
 800             return
 801         self.state = self.INITIALIZING
 802         self.window.deactivate()
 803
 804     def connecting(self):
 805         if self.state == self.CONNECTING:
 806             return
 807         self.state = self.CONNECTING
 808         self.window.deactivate()
 809
 810     def synchronizing(self):
 811         if self.state == self.SYNCHRONIZING:
 812             return
 813         self.state = self.SYNCHRONIZING
 814         self.window.deactivate()
 815
 816     def ready(self):
 817         if self.state == self.READY:
 818             return
 819         self.state = self.READY
 820         self.window.activate()
 821
 822     def update_balance(self):
 823         conf_balance, unconf_balance = self.wallet.get_balance()
 824         balance = D(conf_balance + unconf_balance)
 825         self.window.set_balances(balance)
 826
 827     def update_completions(self):
 828         completions = []
 829         for addr, label in self.wallet.labels.items():
 830             if addr in self.wallet.addressbook:
 831                 completions.append("%s <%s>" % (label, addr))
 832         completions = completions + self.wallet.aliases.keys()
 833         self.window.update_completions(completions)
 834
 835     def update_history(self):
 836         tx_history = self.wallet.get_tx_history()
 837         self.window.update_history(tx_history)
 838
 839 if __name__ == "__main__":
 840     app = QApplication(sys.argv)
 841     with open(rsrc("style.css")) as style_file:
 842         app.setStyleSheet(style_file.read())
 843     mini = MiniWindow()
 844     sys.exit(app.exec_())
 845