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