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.\nElectrum was set to use the 'Qt' GUI")
  17     from simple_config import SimpleConfig
  18     cfg = SimpleConfig()
  19     cfg.set_key("gui", "qt",True)
  20     sys.exit(0)
  21
  22
  23
  24 from decimal import Decimal as D
  25 from interface import DEFAULT_SERVERS
  26 from simple_config import SimpleConfig
  27 from util import get_resource_path as rsrc
  28 from i18n import _
  29 import decimal
  30 import exchange_rate
  31 import os.path
  32 import random
  33 import re
  34 import time
  35 import wallet
  36 import webbrowser
  37 import history_widget
  38 import util
  39
  40 import gui_qt
  41 import shutil
  42
  43 bitcoin = lambda v: v * 100000000
  44
  45 def IconButton(filename, parent=None):
  46     pixmap = QPixmap(filename)
  47     icon = QIcon(pixmap)
  48     return QPushButton(icon, "", parent)
  49
  50 class Timer(QThread):
  51     def run(self):
  52         while True:
  53             self.emit(SIGNAL('timersignal'))
  54             time.sleep(0.5)
  55
  56 def resize_line_edit_width(line_edit, text_input):
  57     metrics = QFontMetrics(qApp.font())
  58     # Create an extra character to add some space on the end
  59     text_input += "A"
  60     line_edit.setMinimumWidth(metrics.width(text_input))
  61
  62 class ElectrumGui(QObject):
  63
  64     def __init__(self, wallet):
  65         super(QObject, self).__init__()
  66
  67         self.wallet = wallet
  68         self.app = QApplication(sys.argv)
  69
  70     def main(self, url):
  71         actuator = MiniActuator(self.wallet)
  72         self.connect(self, SIGNAL("updateservers()"),
  73                      actuator.update_servers_list)
  74         # Should probably not modify the current path but instead
  75         # change the behaviour of rsrc(...)
  76         old_path = QDir.currentPath()
  77         actuator.load_theme()
  78
  79         self.mini = MiniWindow(actuator, self.expand)
  80         driver = MiniDriver(self.wallet, self.mini)
  81
  82         # Reset path back to original value now that loading the GUI
  83         # is completed.
  84         QDir.setCurrent(old_path)
  85
  86         if url:
  87             self.set_url(url)
  88
  89         timer = Timer()
  90         timer.start()
  91         self.expert = gui_qt.ElectrumWindow(self.wallet)
  92         self.expert.app = self.app
  93         self.expert.connect_slots(timer)
  94         self.expert.update_wallet()
  95
  96
  97         self.app.exec_()
  98
  99     def server_list_changed(self):
 100         self.emit(SIGNAL("updateservers()"))
 101
 102     def expand(self):
 103         """Hide the lite mode window and show pro-mode."""
 104         self.mini.hide()
 105         self.expert.show()
 106
 107     def set_url(self, url):
 108         payto, amount, label, message, signature, identity, url = \
 109             self.wallet.parse_url(url, self.show_message, self.show_question)
 110         self.mini.set_payment_fields(payto, amount)
 111
 112     def show_message(self, message):
 113         QMessageBox.information(self.mini, _("Message"), message, _("OK"))
 114
 115     def show_question(self, message):
 116         choice = QMessageBox.question(self.mini, _("Message"), message,
 117                                       QMessageBox.Yes|QMessageBox.No,
 118                                       QMessageBox.No)
 119         return choice == QMessageBox.Yes
 120
 121     def restore_or_create(self):
 122         qt_gui_object = gui_qt.ElectrumGui(self.wallet, self.app)
 123         return qt_gui_object.restore_or_create()
 124
 125 class MiniWindow(QDialog):
 126
 127     def __init__(self, actuator, expand_callback):
 128         super(MiniWindow, self).__init__()
 129
 130         self.actuator = actuator
 131
 132         self.btc_balance = None
 133         self.quote_currencies = ["EUR", "USD", "GBP"]
 134         self.actuator.set_configured_currency(self.set_quote_currency)
 135         self.exchanger = exchange_rate.Exchanger(self)
 136         # Needed because price discovery is done in a different thread
 137         # which needs to be sent back to this main one to update the GUI
 138         self.connect(self, SIGNAL("refresh_balance()"), self.refresh_balance)
 139
 140         self.balance_label = BalanceLabel(self.change_quote_currency)
 141         self.balance_label.setObjectName("balance_label")
 142
 143         self.receive_button = QPushButton(_("&Receive"))
 144         self.receive_button.setObjectName("receive_button")
 145         self.receive_button.setDefault(True)
 146         self.receive_button.clicked.connect(self.copy_address)
 147
 148         # Bitcoin address code
 149         self.address_input = QLineEdit()
 150         self.address_input.setPlaceholderText(_("Enter a Bitcoin address..."))
 151         self.address_input.setObjectName("address_input")
 152
 153
 154         self.address_input.textEdited.connect(self.address_field_changed)
 155         resize_line_edit_width(self.address_input,
 156                                "1BtaFUr3qVvAmwrsuDuu5zk6e4s2rxd2Gy")
 157
 158         self.address_completions = QStringListModel()
 159         address_completer = QCompleter(self.address_input)
 160         address_completer.setCaseSensitivity(False)
 161         address_completer.setModel(self.address_completions)
 162         self.address_input.setCompleter(address_completer)
 163
 164         address_layout = QHBoxLayout()
 165         address_layout.addWidget(self.address_input)
 166
 167         self.amount_input = QLineEdit()
 168         self.amount_input.setPlaceholderText(_("... and amount"))
 169         self.amount_input.setObjectName("amount_input")
 170         # This is changed according to the user's displayed balance
 171         self.amount_validator = QDoubleValidator(self.amount_input)
 172         self.amount_validator.setNotation(QDoubleValidator.StandardNotation)
 173         self.amount_validator.setDecimals(8)
 174         self.amount_input.setValidator(self.amount_validator)
 175
 176         # This removes the very ugly OSX highlighting, please leave this in :D
 177         self.address_input.setAttribute(Qt.WA_MacShowFocusRect, 0)
 178         self.amount_input.setAttribute(Qt.WA_MacShowFocusRect, 0)
 179         self.amount_input.textChanged.connect(self.amount_input_changed)
 180
 181         self.send_button = QPushButton(_("&Send"))
 182         self.send_button.setObjectName("send_button")
 183         self.send_button.setDisabled(True);
 184         self.send_button.clicked.connect(self.send)
 185
 186         main_layout = QGridLayout(self)
 187
 188         main_layout.addWidget(self.balance_label, 0, 0)
 189         main_layout.addWidget(self.receive_button, 0, 1)
 190
 191         main_layout.addWidget(self.address_input, 1, 0, 1, -1)
 192
 193         main_layout.addWidget(self.amount_input, 2, 0)
 194         main_layout.addWidget(self.send_button, 2, 1)
 195
 196         self.history_list = history_widget.HistoryWidget()
 197         self.history_list.setObjectName("history")
 198         self.history_list.hide()
 199         self.history_list.setAlternatingRowColors(True)
 200         main_layout.addWidget(self.history_list, 3, 0, 1, -1)
 201
 202         menubar = QMenuBar()
 203         electrum_menu = menubar.addMenu(_("&Bitcoin"))
 204
 205         servers_menu = electrum_menu.addMenu(_("&Servers"))
 206         servers_group = QActionGroup(self)
 207         self.actuator.set_servers_gui_stuff(servers_menu, servers_group)
 208         self.actuator.populate_servers_menu()
 209         electrum_menu.addSeparator()
 210
 211         brain_seed = electrum_menu.addAction(_("&BrainWallet Info"))
 212         brain_seed.triggered.connect(self.actuator.show_seed_dialog)
 213         quit_option = electrum_menu.addAction(_("&Quit"))
 214         quit_option.triggered.connect(self.close)
 215
 216         view_menu = menubar.addMenu(_("&View"))
 217         extra_menu = menubar.addMenu(_("&Extra"))
 218
 219         backup_wallet = extra_menu.addAction( _("&Create wallet backup"))
 220         backup_wallet.triggered.connect(self.backup_wallet)
 221
 222         expert_gui = view_menu.addAction(_("&Pro Mode"))
 223         expert_gui.triggered.connect(expand_callback)
 224         themes_menu = view_menu.addMenu(_("&Themes"))
 225         selected_theme = self.actuator.selected_theme()
 226         theme_group = QActionGroup(self)
 227         for theme_name in self.actuator.theme_names():
 228             theme_action = themes_menu.addAction(theme_name)
 229             theme_action.setCheckable(True)
 230             if selected_theme == theme_name:
 231                 theme_action.setChecked(True)
 232             class SelectThemeFunctor:
 233                 def __init__(self, theme_name, toggle_theme):
 234                     self.theme_name = theme_name
 235                     self.toggle_theme = toggle_theme
 236                 def __call__(self, checked):
 237                     if checked:
 238                         self.toggle_theme(self.theme_name)
 239             delegate = SelectThemeFunctor(theme_name, self.toggle_theme)
 240             theme_action.toggled.connect(delegate)
 241             theme_group.addAction(theme_action)
 242         view_menu.addSeparator()
 243         show_history = view_menu.addAction(_("Show History"))
 244         show_history.setCheckable(True)
 245         show_history.toggled.connect(self.show_history)
 246
 247         help_menu = menubar.addMenu(_("&Help"))
 248         the_website = help_menu.addAction(_("&Website"))
 249         the_website.triggered.connect(self.the_website)
 250         help_menu.addSeparator()
 251         report_bug = help_menu.addAction(_("&Report Bug"))
 252         report_bug.triggered.connect(self.show_report_bug)
 253         show_about = help_menu.addAction(_("&About"))
 254         show_about.triggered.connect(self.show_about)
 255         main_layout.setMenuBar(menubar)
 256
 257         quit_shortcut = QShortcut(QKeySequence("Ctrl+Q"), self)
 258         quit_shortcut.activated.connect(self.close)
 259         close_shortcut = QShortcut(QKeySequence("Ctrl+W"), self)
 260         close_shortcut.activated.connect(self.close)
 261
 262         self.cfg = SimpleConfig()
 263         g = self.cfg.config["winpos-lite"]
 264         self.setGeometry(g[0], g[1], g[2], g[3])
 265         show_history.setChecked(self.cfg.config["history"])
 266         self.show_history(self.cfg.config["history"])
 267
 268         self.setWindowIcon(QIcon(":electrum.png"))
 269         self.setWindowTitle("Electrum")
 270         self.setWindowFlags(Qt.Window|Qt.MSWindowsFixedSizeDialogHint)
 271         self.layout().setSizeConstraint(QLayout.SetFixedSize)
 272         self.setObjectName("main_window")
 273         self.show()
 274
 275     def toggle_theme(self, theme_name):
 276         old_path = QDir.currentPath()
 277         self.actuator.change_theme(theme_name)
 278         # Recompute style globally
 279         qApp.style().unpolish(self)
 280         qApp.style().polish(self)
 281         QDir.setCurrent(old_path)
 282
 283     def closeEvent(self, event):
 284         g = self.geometry()
 285         self.cfg.set_key("winpos-lite", [g.left(),g.top(),g.width(),g.height()])
 286         self.cfg.set_key("history", self.history_list.isVisible())
 287         self.cfg.save_config()
 288
 289         super(MiniWindow, self).closeEvent(event)
 290         qApp.quit()
 291
 292     def set_payment_fields(self, dest_address, amount):
 293         self.address_input.setText(dest_address)
 294         self.address_field_changed(dest_address)
 295         self.amount_input.setText(amount)
 296
 297     def activate(self):
 298         pass
 299
 300     def deactivate(self):
 301         pass
 302
 303     def set_quote_currency(self, currency):
 304         """Set and display the fiat currency country."""
 305         assert currency in self.quote_currencies
 306         self.quote_currencies.remove(currency)
 307         self.quote_currencies.insert(0, currency)
 308         self.refresh_balance()
 309
 310     def change_quote_currency(self):
 311         self.quote_currencies = \
 312             self.quote_currencies[1:] + self.quote_currencies[0:1]
 313         self.actuator.set_config_currency(self.quote_currencies[0])
 314         self.refresh_balance()
 315
 316     def refresh_balance(self):
 317         if self.btc_balance is None:
 318             # Price has been discovered before wallet has been loaded
 319             # and server connect... so bail.
 320             return
 321         self.set_balances(self.btc_balance)
 322         self.amount_input_changed(self.amount_input.text())
 323
 324     def set_balances(self, btc_balance):
 325         """Set the bitcoin balance and update the amount label accordingly."""
 326         self.btc_balance = btc_balance
 327         quote_text = self.create_quote_text(btc_balance)
 328         if quote_text:
 329             quote_text = "(%s)" % quote_text
 330         btc_balance = "%.2f" % (btc_balance / bitcoin(1))
 331         self.balance_label.set_balance_text(btc_balance, quote_text)
 332         self.setWindowTitle("Electrum - %s BTC" % btc_balance)
 333
 334     def amount_input_changed(self, amount_text):
 335         """Update the number of bitcoins displayed."""
 336         self.check_button_status()
 337
 338         try:
 339             amount = D(str(amount_text))
 340         except decimal.InvalidOperation:
 341             self.balance_label.show_balance()
 342         else:
 343             quote_text = self.create_quote_text(amount * bitcoin(1))
 344             if quote_text:
 345                 self.balance_label.set_amount_text(quote_text)
 346                 self.balance_label.show_amount()
 347             else:
 348                 self.balance_label.show_balance()
 349
 350     def create_quote_text(self, btc_balance):
 351         """Return a string copy of the amount fiat currency the
 352         user has in bitcoins."""
 353         quote_currency = self.quote_currencies[0]
 354         quote_balance = self.exchanger.exchange(btc_balance, quote_currency)
 355         if quote_balance is None:
 356             quote_text = ""
 357         else:
 358             quote_text = "%.2f %s" % ((quote_balance / bitcoin(1)),
 359                                       quote_currency)
 360         return quote_text
 361
 362     def send(self):
 363         if self.actuator.send(self.address_input.text(),
 364                               self.amount_input.text(), self):
 365             self.address_input.setText("")
 366             self.amount_input.setText("")
 367
 368     def check_button_status(self):
 369         """Check that the bitcoin address is valid and that something
 370         is entered in the amount before making the send button clickable."""
 371         try:
 372             value = D(str(self.amount_input.text())) * 10**8
 373         except decimal.InvalidOperation:
 374             value = None
 375         # self.address_input.property(...) returns a qVariant, not a bool.
 376         # The == is needed to properly invoke a comparison.
 377         if (self.address_input.property("isValid") == True and
 378             value is not None and 0 < value <= self.btc_balance):
 379             self.send_button.setDisabled(False)
 380         else:
 381             self.send_button.setDisabled(True)
 382
 383     def address_field_changed(self, address):
 384         if self.actuator.is_valid(address):
 385             self.check_button_status()
 386             self.address_input.setProperty("isValid", True)
 387             self.recompute_style(self.address_input)
 388         else:
 389             self.send_button.setDisabled(True)
 390             self.address_input.setProperty("isValid", False)
 391             self.recompute_style(self.address_input)
 392
 393         if len(address) == 0:
 394             self.address_input.setProperty("isValid", None)
 395             self.recompute_style(self.address_input)
 396
 397     def recompute_style(self, element):
 398         self.style().unpolish(element)
 399         self.style().polish(element)
 400
 401     def copy_address(self):
 402         receive_popup = ReceivePopup(self.receive_button)
 403         self.actuator.copy_address(receive_popup)
 404
 405     def update_completions(self, completions):
 406         self.address_completions.setStringList(completions)
 407
 408     def update_history(self, tx_history):
 409         for tx in tx_history[-10:]:
 410             address = tx["default_label"]
 411             amount = D(tx["value"]) / 10**8
 412             self.history_list.append(address, amount)
 413
 414     def acceptbit(self):
 415         self.actuator.acceptbit(self.quote_currencies[0])
 416
 417     def the_website(self):
 418         webbrowser.open("http://electrum-desktop.com")
 419
 420     def show_about(self):
 421         QMessageBox.about(self, "Electrum",
 422             _("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"))
 423
 424     def show_report_bug(self):
 425         QMessageBox.information(self, "Electrum - " + _("Reporting Bugs"),
 426             _("Email bug reports to %s") % "genjix" + "@" + "riseup.net")
 427
 428     def show_history(self, toggle_state):
 429         if toggle_state:
 430             self.history_list.show()
 431         else:
 432             self.history_list.hide()
 433
 434     def backup_wallet(self):
 435         try:
 436           folderName = QFileDialog.getExistingDirectory(QWidget(), 'Select folder to save a copy of your wallet to', os.path.expanduser('~/'))
 437           if folderName:
 438             sourceFile = util.user_dir() + '/electrum.dat'
 439             shutil.copy2(sourceFile, str(folderName))
 440             QMessageBox.information(None,"Wallet backup created", "A copy of your wallet file was created in '%s'" % str(folderName))
 441         except (IOError, os.error), reason:
 442           QMessageBox.critical(None,"Unable to create backup", "Electrum was unable copy your wallet file to the specified location.\n" + str(reason))
 443
 444
 445
 446
 447 class BalanceLabel(QLabel):
 448
 449     SHOW_CONNECTING = 1
 450     SHOW_BALANCE = 2
 451     SHOW_AMOUNT = 3
 452
 453     def __init__(self, change_quote_currency, parent=None):
 454         super(QLabel, self).__init__(_("Connecting..."), parent)
 455         self.change_quote_currency = change_quote_currency
 456         self.state = self.SHOW_CONNECTING
 457         self.balance_text = ""
 458         self.amount_text = ""
 459
 460     def mousePressEvent(self, event):
 461         """Change the fiat currency selection if window background is clicked."""
 462         if self.state != self.SHOW_CONNECTING:
 463             self.change_quote_currency()
 464
 465     def set_balance_text(self, btc_balance, quote_text):
 466         """Set the amount of bitcoins in the gui."""
 467         if self.state == self.SHOW_CONNECTING:
 468             self.state = self.SHOW_BALANCE
 469         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)
 470         if self.state == self.SHOW_BALANCE:
 471             self.setText(self.balance_text)
 472
 473     def set_amount_text(self, quote_text):
 474         self.amount_text = "<span style='font-size: 10pt'>%s</span>" % quote_text
 475         if self.state == self.SHOW_AMOUNT:
 476             self.setText(self.amount_text)
 477
 478     def show_balance(self):
 479         if self.state == self.SHOW_AMOUNT:
 480             self.state = self.SHOW_BALANCE
 481             self.setText(self.balance_text)
 482
 483     def show_amount(self):
 484         if self.state == self.SHOW_BALANCE:
 485             self.state = self.SHOW_AMOUNT
 486             self.setText(self.amount_text)
 487
 488 def ok_cancel_buttons(dialog):
 489     row_layout = QHBoxLayout()
 490     row_layout.addStretch(1)
 491     ok_button = QPushButton(_("OK"))
 492     row_layout.addWidget(ok_button)
 493     ok_button.clicked.connect(dialog.accept)
 494     cancel_button = QPushButton(_("Cancel"))
 495     row_layout.addWidget(cancel_button)
 496     cancel_button.clicked.connect(dialog.reject)
 497     return row_layout
 498
 499 class PasswordDialog(QDialog):
 500
 501     def __init__(self, parent):
 502         super(QDialog, self).__init__(parent)
 503
 504         self.setModal(True)
 505
 506         self.password_input = QLineEdit()
 507         self.password_input.setEchoMode(QLineEdit.Password)
 508
 509         main_layout = QVBoxLayout(self)
 510         message = _('Please enter your password')
 511         main_layout.addWidget(QLabel(message))
 512
 513         grid = QGridLayout()
 514         grid.setSpacing(8)
 515         grid.addWidget(QLabel(_('Password')), 1, 0)
 516         grid.addWidget(self.password_input, 1, 1)
 517         main_layout.addLayout(grid)
 518
 519         main_layout.addLayout(ok_cancel_buttons(self))
 520         self.setLayout(main_layout)
 521
 522     def run(self):
 523         if not self.exec_():
 524             return
 525         return unicode(self.password_input.text())
 526
 527 class ReceivePopup(QDialog):
 528
 529     def leaveEvent(self, event):
 530         self.close()
 531
 532     def setup(self, address):
 533         label = QLabel(_("Copied your Bitcoin address to the clipboard!"))
 534         address_display = QLineEdit(address)
 535         address_display.setReadOnly(True)
 536         resize_line_edit_width(address_display, address)
 537
 538         main_layout = QVBoxLayout(self)
 539         main_layout.addWidget(label)
 540         main_layout.addWidget(address_display)
 541
 542         self.setMouseTracking(True)
 543         self.setWindowTitle("Electrum - " + _("Receive Bitcoin payment"))
 544         self.setWindowFlags(Qt.Window|Qt.FramelessWindowHint|
 545                             Qt.MSWindowsFixedSizeDialogHint)
 546         self.layout().setSizeConstraint(QLayout.SetFixedSize)
 547         #self.setFrameStyle(QFrame.WinPanel|QFrame.Raised)
 548         #self.setAlignment(Qt.AlignCenter)
 549
 550     def popup(self):
 551         parent = self.parent()
 552         top_left_pos = parent.mapToGlobal(parent.rect().bottomLeft())
 553         self.move(top_left_pos)
 554         center_mouse_pos = self.mapToGlobal(self.rect().center())
 555         QCursor.setPos(center_mouse_pos)
 556         self.show()
 557
 558 class MiniActuator:
 559     """Initialize the definitions relating to themes and
 560     sending/recieving bitcoins."""
 561
 562
 563     def __init__(self, wallet):
 564         """Retrieve the gui theme used in previous session."""
 565         self.wallet = wallet
 566         self.theme_name = self.wallet.theme
 567         self.themes = util.load_theme_paths()
 568
 569     def load_theme(self):
 570         """Load theme retrieved from wallet file."""
 571         try:
 572             theme_prefix, theme_path = self.themes[self.theme_name]
 573         except KeyError:
 574             util.print_error("Theme not found!", self.theme_name)
 575             return
 576         QDir.setCurrent(os.path.join(theme_prefix, theme_path))
 577         with open(rsrc("style.css")) as style_file:
 578             qApp.setStyleSheet(style_file.read())
 579
 580     def theme_names(self):
 581         """Sort themes."""
 582         return sorted(self.themes.keys())
 583
 584     def selected_theme(self):
 585         """Select theme."""
 586         return self.theme_name
 587
 588     def change_theme(self, theme_name):
 589         """Change theme."""
 590         self.wallet.theme = self.theme_name = theme_name
 591         self.load_theme()
 592
 593     def set_configured_currency(self, set_quote_currency):
 594         """Set the inital fiat currency conversion country (USD/EUR/GBP) in
 595         the GUI to what it was set to in the wallet."""
 596         currency = self.wallet.conversion_currency
 597         # currency can be none when Electrum is used for the first
 598         # time and no setting has been created yet.
 599         if currency is not None:
 600             set_quote_currency(currency)
 601
 602     def set_config_currency(self, conversion_currency):
 603         """Change the wallet fiat currency country."""
 604         self.wallet.conversion_currency = conversion_currency
 605
 606     def set_servers_gui_stuff(self, servers_menu, servers_group):
 607         self.servers_menu = servers_menu
 608         self.servers_group = servers_group
 609
 610     def populate_servers_menu(self):
 611         interface = self.wallet.interface
 612         if not interface.servers:
 613             print "No servers loaded yet."
 614             self.servers_list = []
 615             for server_string in DEFAULT_SERVERS:
 616                 host, port, protocol = server_string.split(':')
 617                 transports = [(protocol,port)]
 618                 self.servers_list.append((host, transports))
 619         else:
 620             print "Servers loaded."
 621             self.servers_list = interface.servers
 622         server_names = [details[0] for details in self.servers_list]
 623         current_server = self.wallet.server.split(":")[0]
 624         for server_name in server_names:
 625             server_action = self.servers_menu.addAction(server_name)
 626             server_action.setCheckable(True)
 627             if server_name == current_server:
 628                 server_action.setChecked(True)
 629             class SelectServerFunctor:
 630                 def __init__(self, server_name, server_selected):
 631                     self.server_name = server_name
 632                     self.server_selected = server_selected
 633                 def __call__(self, checked):
 634                     if checked:
 635                         # call server_selected
 636                         self.server_selected(self.server_name)
 637             delegate = SelectServerFunctor(server_name, self.server_selected)
 638             server_action.toggled.connect(delegate)
 639             self.servers_group.addAction(server_action)
 640
 641     def update_servers_list(self):
 642         # Clear servers_group
 643         for action in self.servers_group.actions():
 644             self.servers_group.removeAction(action)
 645         self.populate_servers_menu()
 646
 647     def server_selected(self, server_name):
 648         match = [transports for (host, transports) in self.servers_list
 649                  if host == server_name]
 650         assert len(match) == 1
 651         match = match[0]
 652         # Default to TCP if available else use anything
 653         # TODO: protocol should be selectable.
 654         tcp_port = [port for (protocol, port) in match if protocol == "t"]
 655         if len(tcp_port) == 0:
 656             protocol = match[0][0]
 657             port = match[0][1]
 658         else:
 659             protocol = "t"
 660             port = tcp_port[0]
 661         server_line = "%s:%s:%s" % (server_name, port, protocol)
 662
 663         # Should this have exception handling?
 664         self.cfg = SimpleConfig()
 665         self.wallet.set_server(server_line, self.cfg.config["proxy"])
 666
 667     def copy_address(self, receive_popup):
 668         """Copy the wallet addresses into the client."""
 669         addrs = [addr for addr in self.wallet.all_addresses()
 670                  if not self.wallet.is_change(addr)]
 671         # Select most recent addresses from gap limit
 672         addrs = addrs[-self.wallet.gap_limit:]
 673         copied_address = random.choice(addrs)
 674         qApp.clipboard().setText(copied_address)
 675         receive_popup.setup(copied_address)
 676         receive_popup.popup()
 677
 678     def send(self, address, amount, parent_window):
 679         """Send bitcoins to the target address."""
 680         dest_address = self.fetch_destination(address)
 681
 682         if dest_address is None or not self.wallet.is_valid(dest_address):
 683             QMessageBox.warning(parent_window, _('Error'),
 684                 _('Invalid Bitcoin Address') + ':\n' + address, _('OK'))
 685             return False
 686
 687         convert_amount = lambda amount: \
 688             int(D(unicode(amount)) * bitcoin(1))
 689         amount = convert_amount(amount)
 690
 691         if self.wallet.use_encryption:
 692             password_dialog = PasswordDialog(parent_window)
 693             password = password_dialog.run()
 694             if not password:
 695                 return
 696         else:
 697             password = None
 698
 699         fee = 0
 700         # 0.1 BTC = 10000000
 701         if amount < bitcoin(1) / 10:
 702             # 0.001 BTC
 703             fee = bitcoin(1) / 1000
 704
 705         try:
 706             tx = self.wallet.mktx(dest_address, amount, "", password, fee)
 707         except BaseException as error:
 708             QMessageBox.warning(parent_window, _('Error'), str(error), _('OK'))
 709             return False
 710
 711         status, message = self.wallet.sendtx(tx)
 712         if not status:
 713             import tempfile
 714             dumpf = tempfile.NamedTemporaryFile(delete=False)
 715             dumpf.write(tx)
 716             dumpf.close()
 717             print "Dumped error tx to", dumpf.name
 718             QMessageBox.warning(parent_window, _('Error'), message, _('OK'))
 719             return False
 720
 721         QMessageBox.information(parent_window, '',
 722             _('Payment sent.') + '\n' + message, _('OK'))
 723         return True
 724
 725     def fetch_destination(self, address):
 726         recipient = unicode(address).strip()
 727
 728         # alias
 729         match1 = re.match("^(|([\w\-\.]+)@)((\w[\w\-]+\.)+[\w\-]+)$",
 730                           recipient)
 731
 732         # label or alias, with address in brackets
 733         match2 = re.match("(.*?)\s*\<([1-9A-HJ-NP-Za-km-z]{26,})\>",
 734                           recipient)
 735
 736         if match1:
 737             dest_address = \
 738                 self.wallet.get_alias(recipient, True,
 739                                       self.show_message, self.question)
 740             return dest_address
 741         elif match2:
 742             return match2.group(2)
 743         else:
 744             return recipient
 745
 746     def is_valid(self, address):
 747         """Check if bitcoin address is valid."""
 748         return self.wallet.is_valid(address)
 749
 750     def acceptbit(self, currency):
 751         master_pubkey = self.wallet.master_public_key.encode("hex")
 752         url = "http://acceptbit.com/mpk/%s/%s" % (master_pubkey, currency)
 753         webbrowser.open(url)
 754
 755     def show_seed_dialog(self):
 756         gui_qt.ElectrumWindow.show_seed_dialog(self.wallet)
 757
 758 class MiniDriver(QObject):
 759
 760     INITIALIZING = 0
 761     CONNECTING = 1
 762     SYNCHRONIZING = 2
 763     READY = 3
 764
 765     def __init__(self, wallet, window):
 766         super(QObject, self).__init__()
 767
 768         self.wallet = wallet
 769         self.window = window
 770
 771         self.wallet.register_callback(self.update_callback)
 772
 773         self.state = None
 774
 775         self.initializing()
 776         self.connect(self, SIGNAL("updatesignal()"), self.update)
 777         self.update_callback()
 778
 779     # This is a hack to workaround that Qt does not like changing the
 780     # window properties from this other thread before the runloop has
 781     # been called from.
 782     def update_callback(self):
 783         self.emit(SIGNAL("updatesignal()"))
 784
 785     def update(self):
 786         if not self.wallet.interface:
 787             self.initializing()
 788         elif not self.wallet.interface.is_connected:
 789             self.connecting()
 790         elif not self.wallet.blocks == -1:
 791             self.connecting()
 792         elif not self.wallet.is_up_to_date:
 793             self.synchronizing()
 794         else:
 795             self.ready()
 796
 797         if self.wallet.up_to_date:
 798             self.update_balance()
 799             self.update_completions()
 800             self.update_history()
 801
 802     def initializing(self):
 803         if self.state == self.INITIALIZING:
 804             return
 805         self.state = self.INITIALIZING
 806         self.window.deactivate()
 807
 808     def connecting(self):
 809         if self.state == self.CONNECTING:
 810             return
 811         self.state = self.CONNECTING
 812         self.window.deactivate()
 813
 814     def synchronizing(self):
 815         if self.state == self.SYNCHRONIZING:
 816             return
 817         self.state = self.SYNCHRONIZING
 818         self.window.deactivate()
 819
 820     def ready(self):
 821         if self.state == self.READY:
 822             return
 823         self.state = self.READY
 824         self.window.activate()
 825
 826     def update_balance(self):
 827         conf_balance, unconf_balance = self.wallet.get_balance()
 828         balance = D(conf_balance + unconf_balance)
 829         self.window.set_balances(balance)
 830
 831     def update_completions(self):
 832         completions = []
 833         for addr, label in self.wallet.labels.items():
 834             if addr in self.wallet.addressbook:
 835                 completions.append("%s <%s>" % (label, addr))
 836         completions = completions + self.wallet.aliases.keys()
 837         self.window.update_completions(completions)
 838
 839     def update_history(self):
 840         tx_history = self.wallet.get_tx_history()
 841         self.window.update_history(tx_history)
 842
 843 if __name__ == "__main__":
 844     app = QApplication(sys.argv)
 845     with open(rsrc("style.css")) as style_file:
 846         app.setStyleSheet(style_file.read())
 847     mini = MiniWindow()
 848     sys.exit(app.exec_())
 849