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
  14
  15 from decimal import Decimal as D
  16 from interface import DEFAULT_SERVERS
  17 from util import get_resource_path as rsrc
  18 from i18n import _
  19 import decimal
  20 import exchange_rate
  21 import os.path
  22 import random
  23 import re
  24 import time
  25 import wallet
  26 import webbrowser
  27 import history_widget
  28 import util
  29
  30 import gui_qt
  31 import shutil
  32
  33 bitcoin = lambda v: v * 100000000
  34
  35 def IconButton(filename, parent=None):
  36     pixmap = QPixmap(filename)
  37     icon = QIcon(pixmap)
  38     return QPushButton(icon, "", parent)
  39
  40 class Timer(QThread):
  41     def run(self):
  42         while True:
  43             self.emit(SIGNAL('timersignal'))
  44             time.sleep(0.5)
  45
  46 def resize_line_edit_width(line_edit, text_input):
  47     metrics = QFontMetrics(qApp.font())
  48     # Create an extra character to add some space on the end
  49     text_input += "A"
  50     line_edit.setMinimumWidth(metrics.width(text_input))
  51
  52 class ElectrumGui(QObject):
  53
  54     def __init__(self, wallet, config):
  55         super(QObject, self).__init__()
  56
  57         self.wallet = wallet
  58         self.config = config
  59         self.check_qt_version()
  60         self.app = QApplication(sys.argv)
  61
  62
  63     def check_qt_version(self):
  64         qtVersion = qVersion()
  65         if not(int(qtVersion[0]) >= 4 and int(qtVersion[2]) >= 7):
  66             app = QApplication(sys.argv)
  67             QMessageBox.warning(None,"Could not start Lite GUI.", "Electrum was unable to load the 'Lite GUI' because it needs Qt version >= 4.7.\nChanging your config to use the 'Qt' GUI")
  68             self.config.set_key('gui','qt',True)
  69             sys.exit(0)
  70
  71
  72     def main(self, url):
  73         actuator = MiniActuator(self.wallet)
  74         self.connect(self, SIGNAL("updateservers()"),
  75                      actuator.update_servers_list)
  76         # Should probably not modify the current path but instead
  77         # change the behaviour of rsrc(...)
  78         old_path = QDir.currentPath()
  79         actuator.load_theme()
  80
  81         self.mini = MiniWindow(actuator, self.expand, self.config)
  82         driver = MiniDriver(self.wallet, self.mini)
  83
  84         # Reset path back to original value now that loading the GUI
  85         # is completed.
  86         QDir.setCurrent(old_path)
  87
  88         if url:
  89             self.set_url(url)
  90
  91         timer = Timer()
  92         timer.start()
  93         self.expert = gui_qt.ElectrumWindow(self.wallet, self.config)
  94         self.expert.app = self.app
  95         self.expert.connect_slots(timer)
  96         self.expert.update_wallet()
  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, config):
 128         super(MiniWindow, self).__init__()
 129
 130         self.actuator = actuator
 131         self.config = config
 132
 133         self.btc_balance = None
 134         self.quote_currencies = ["EUR", "USD", "GBP"]
 135         self.actuator.set_configured_currency(self.set_quote_currency)
 136         self.exchanger = exchange_rate.Exchanger(self)
 137         # Needed because price discovery is done in a different thread
 138         # which needs to be sent back to this main one to update the GUI
 139         self.connect(self, SIGNAL("refresh_balance()"), self.refresh_balance)
 140
 141         self.balance_label = BalanceLabel(self.change_quote_currency)
 142         self.balance_label.setObjectName("balance_label")
 143
 144         self.receive_button = QPushButton(_("&Receive"))
 145         self.receive_button.setObjectName("receive_button")
 146         self.receive_button.setDefault(True)
 147         self.receive_button.clicked.connect(self.copy_address)
 148
 149         # Bitcoin address code
 150         self.address_input = QLineEdit()
 151         self.address_input.setPlaceholderText(_("Enter a Bitcoin address..."))
 152         self.address_input.setObjectName("address_input")
 153
 154
 155         self.address_input.textEdited.connect(self.address_field_changed)
 156         resize_line_edit_width(self.address_input,
 157                                "1BtaFUr3qVvAmwrsuDuu5zk6e4s2rxd2Gy")
 158
 159         self.address_completions = QStringListModel()
 160         address_completer = QCompleter(self.address_input)
 161         address_completer.setCaseSensitivity(False)
 162         address_completer.setModel(self.address_completions)
 163         self.address_input.setCompleter(address_completer)
 164
 165         address_layout = QHBoxLayout()
 166         address_layout.addWidget(self.address_input)
 167
 168         self.amount_input = QLineEdit()
 169         self.amount_input.setPlaceholderText(_("... and amount"))
 170         self.amount_input.setObjectName("amount_input")
 171         # This is changed according to the user's displayed balance
 172         self.amount_validator = QDoubleValidator(self.amount_input)
 173         self.amount_validator.setNotation(QDoubleValidator.StandardNotation)
 174         self.amount_validator.setDecimals(8)
 175         self.amount_input.setValidator(self.amount_validator)
 176
 177         # This removes the very ugly OSX highlighting, please leave this in :D
 178         self.address_input.setAttribute(Qt.WA_MacShowFocusRect, 0)
 179         self.amount_input.setAttribute(Qt.WA_MacShowFocusRect, 0)
 180         self.amount_input.textChanged.connect(self.amount_input_changed)
 181
 182         self.send_button = QPushButton(_("&Send"))
 183         self.send_button.setObjectName("send_button")
 184         self.send_button.setDisabled(True);
 185         self.send_button.clicked.connect(self.send)
 186
 187         main_layout = QGridLayout(self)
 188
 189         main_layout.addWidget(self.balance_label, 0, 0)
 190         main_layout.addWidget(self.receive_button, 0, 1)
 191
 192         main_layout.addWidget(self.address_input, 1, 0, 1, -1)
 193
 194         main_layout.addWidget(self.amount_input, 2, 0)
 195         main_layout.addWidget(self.send_button, 2, 1)
 196
 197         self.history_list = history_widget.HistoryWidget()
 198         self.history_list.setObjectName("history")
 199         self.history_list.hide()
 200         self.history_list.setAlternatingRowColors(True)
 201         main_layout.addWidget(self.history_list, 3, 0, 1, -1)
 202
 203         menubar = QMenuBar()
 204         electrum_menu = menubar.addMenu(_("&Bitcoin"))
 205
 206         servers_menu = electrum_menu.addMenu(_("&Servers"))
 207         servers_group = QActionGroup(self)
 208         self.actuator.set_servers_gui_stuff(servers_menu, servers_group)
 209         self.actuator.populate_servers_menu()
 210         electrum_menu.addSeparator()
 211
 212         brain_seed = electrum_menu.addAction(_("&BrainWallet Info"))
 213         brain_seed.triggered.connect(self.actuator.show_seed_dialog)
 214         quit_option = electrum_menu.addAction(_("&Quit"))
 215         quit_option.triggered.connect(self.close)
 216
 217         view_menu = menubar.addMenu(_("&View"))
 218         extra_menu = menubar.addMenu(_("&Extra"))
 219
 220         backup_wallet = extra_menu.addAction( _("&Create wallet backup"))
 221         backup_wallet.triggered.connect(self.backup_wallet)
 222
 223         expert_gui = view_menu.addAction(_("&Pro Mode"))
 224         expert_gui.triggered.connect(expand_callback)
 225         themes_menu = view_menu.addMenu(_("&Themes"))
 226         selected_theme = self.actuator.selected_theme()
 227         theme_group = QActionGroup(self)
 228         for theme_name in self.actuator.theme_names():
 229             theme_action = themes_menu.addAction(theme_name)
 230             theme_action.setCheckable(True)
 231             if selected_theme == theme_name:
 232                 theme_action.setChecked(True)
 233             class SelectThemeFunctor:
 234                 def __init__(self, theme_name, toggle_theme):
 235                     self.theme_name = theme_name
 236                     self.toggle_theme = toggle_theme
 237                 def __call__(self, checked):
 238                     if checked:
 239                         self.toggle_theme(self.theme_name)
 240             delegate = SelectThemeFunctor(theme_name, self.toggle_theme)
 241             theme_action.toggled.connect(delegate)
 242             theme_group.addAction(theme_action)
 243         view_menu.addSeparator()
 244         show_history = view_menu.addAction(_("Show History"))
 245         show_history.setCheckable(True)
 246         show_history.toggled.connect(self.show_history)
 247
 248         help_menu = menubar.addMenu(_("&Help"))
 249         the_website = help_menu.addAction(_("&Website"))
 250         the_website.triggered.connect(self.the_website)
 251         help_menu.addSeparator()
 252         report_bug = help_menu.addAction(_("&Report Bug"))
 253         report_bug.triggered.connect(self.show_report_bug)
 254         show_about = help_menu.addAction(_("&About"))
 255         show_about.triggered.connect(self.show_about)
 256         main_layout.setMenuBar(menubar)
 257
 258         quit_shortcut = QShortcut(QKeySequence("Ctrl+Q"), self)
 259         quit_shortcut.activated.connect(self.close)
 260         close_shortcut = QShortcut(QKeySequence("Ctrl+W"), self)
 261         close_shortcut.activated.connect(self.close)
 262
 263         g = self.config.get("winpos-lite",[4, 25, 351, 149])
 264         self.setGeometry(g[0], g[1], g[2], g[3])
 265
 266         show_hist = self.config.get("gui_show_history",False)
 267         show_history.setChecked(show_hist)
 268         self.show_history(show_hist)
 269
 270         self.setWindowIcon(QIcon(":electrum.png"))
 271         self.setWindowTitle("Electrum")
 272         self.setWindowFlags(Qt.Window|Qt.MSWindowsFixedSizeDialogHint)
 273         self.layout().setSizeConstraint(QLayout.SetFixedSize)
 274         self.setObjectName("main_window")
 275         self.show()
 276
 277     def toggle_theme(self, theme_name):
 278         old_path = QDir.currentPath()
 279         self.actuator.change_theme(theme_name)
 280         # Recompute style globally
 281         qApp.style().unpolish(self)
 282         qApp.style().polish(self)
 283         QDir.setCurrent(old_path)
 284
 285     def closeEvent(self, event):
 286         g = self.geometry()
 287         self.config.set_key("winpos-lite", [g.left(),g.top(),g.width(),g.height()],True)
 288         self.config.set_key("gui_show_history", self.history_list.isVisible(),True)
 289
 290         super(MiniWindow, self).closeEvent(event)
 291         qApp.quit()
 292
 293     def set_payment_fields(self, dest_address, amount):
 294         self.address_input.setText(dest_address)
 295         self.address_field_changed(dest_address)
 296         self.amount_input.setText(amount)
 297
 298     def activate(self):
 299         pass
 300
 301     def deactivate(self):
 302         pass
 303
 304     def set_quote_currency(self, currency):
 305         """Set and display the fiat currency country."""
 306         assert currency in self.quote_currencies
 307         self.quote_currencies.remove(currency)
 308         self.quote_currencies.insert(0, currency)
 309         self.refresh_balance()
 310
 311     def change_quote_currency(self):
 312         self.quote_currencies = \
 313             self.quote_currencies[1:] + self.quote_currencies[0:1]
 314         self.actuator.set_config_currency(self.quote_currencies[0])
 315         self.refresh_balance()
 316
 317     def refresh_balance(self):
 318         if self.btc_balance is None:
 319             # Price has been discovered before wallet has been loaded
 320             # and server connect... so bail.
 321             return
 322         self.set_balances(self.btc_balance)
 323         self.amount_input_changed(self.amount_input.text())
 324
 325     def set_balances(self, btc_balance):
 326         """Set the bitcoin balance and update the amount label accordingly."""
 327         self.btc_balance = btc_balance
 328         quote_text = self.create_quote_text(btc_balance)
 329         if quote_text:
 330             quote_text = "(%s)" % quote_text
 331         btc_balance = "%.2f" % (btc_balance / bitcoin(1))
 332         self.balance_label.set_balance_text(btc_balance, quote_text)
 333         self.setWindowTitle("Electrum - %s BTC" % btc_balance)
 334
 335     def amount_input_changed(self, amount_text):
 336         """Update the number of bitcoins displayed."""
 337         self.check_button_status()
 338
 339         try:
 340             amount = D(str(amount_text))
 341         except decimal.InvalidOperation:
 342             self.balance_label.show_balance()
 343         else:
 344             quote_text = self.create_quote_text(amount * bitcoin(1))
 345             if quote_text:
 346                 self.balance_label.set_amount_text(quote_text)
 347                 self.balance_label.show_amount()
 348             else:
 349                 self.balance_label.show_balance()
 350
 351     def create_quote_text(self, btc_balance):
 352         """Return a string copy of the amount fiat currency the
 353         user has in bitcoins."""
 354         quote_currency = self.quote_currencies[0]
 355         quote_balance = self.exchanger.exchange(btc_balance, quote_currency)
 356         if quote_balance is None:
 357             quote_text = ""
 358         else:
 359             quote_text = "%.2f %s" % ((quote_balance / bitcoin(1)),
 360                                       quote_currency)
 361         return quote_text
 362
 363     def send(self):
 364         if self.actuator.send(self.address_input.text(),
 365                               self.amount_input.text(), self):
 366             self.address_input.setText("")
 367             self.amount_input.setText("")
 368
 369     def check_button_status(self):
 370         """Check that the bitcoin address is valid and that something
 371         is entered in the amount before making the send button clickable."""
 372         try:
 373             value = D(str(self.amount_input.text())) * 10**8
 374         except decimal.InvalidOperation:
 375             value = None
 376         # self.address_input.property(...) returns a qVariant, not a bool.
 377         # The == is needed to properly invoke a comparison.
 378         if (self.address_input.property("isValid") == True and
 379             value is not None and 0 < value <= self.btc_balance):
 380             self.send_button.setDisabled(False)
 381         else:
 382             self.send_button.setDisabled(True)
 383
 384     def address_field_changed(self, address):
 385         if self.actuator.is_valid(address):
 386             self.check_button_status()
 387             self.address_input.setProperty("isValid", True)
 388             self.recompute_style(self.address_input)
 389         else:
 390             self.send_button.setDisabled(True)
 391             self.address_input.setProperty("isValid", False)
 392             self.recompute_style(self.address_input)
 393
 394         if len(address) == 0:
 395             self.address_input.setProperty("isValid", None)
 396             self.recompute_style(self.address_input)
 397
 398     def recompute_style(self, element):
 399         self.style().unpolish(element)
 400         self.style().polish(element)
 401
 402     def copy_address(self):
 403         receive_popup = ReceivePopup(self.receive_button)
 404         self.actuator.copy_address(receive_popup)
 405
 406     def update_completions(self, completions):
 407         self.address_completions.setStringList(completions)
 408
 409     def update_history(self, tx_history):
 410         for tx in tx_history[-10:]:
 411             address = tx["default_label"]
 412             amount = D(tx["value"]) / 10**8
 413             self.history_list.append(address, amount)
 414
 415     def acceptbit(self):
 416         self.actuator.acceptbit(self.quote_currencies[0])
 417
 418     def the_website(self):
 419         webbrowser.open("http://electrum-desktop.com")
 420
 421     def show_about(self):
 422         QMessageBox.about(self, "Electrum",
 423             _("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"))
 424
 425     def show_report_bug(self):
 426         QMessageBox.information(self, "Electrum - " + _("Reporting Bugs"),
 427             _("Email bug reports to %s") % "genjix" + "@" + "riseup.net")
 428
 429     def show_history(self, toggle_state):
 430         if toggle_state:
 431             self.history_list.show()
 432         else:
 433             self.history_list.hide()
 434
 435     def backup_wallet(self):
 436         try:
 437           folderName = QFileDialog.getExistingDirectory(QWidget(), 'Select folder to save a copy of your wallet to', os.path.expanduser('~/'))
 438           if folderName:
 439             sourceFile = util.user_dir() + '/electrum.dat'
 440             shutil.copy2(sourceFile, str(folderName))
 441             QMessageBox.information(None,"Wallet backup created", "A copy of your wallet file was created in '%s'" % str(folderName))
 442         except (IOError, os.error), reason:
 443           QMessageBox.critical(None,"Unable to create backup", "Electrum was unable copy your wallet file to the specified location.\n" + str(reason))
 444
 445
 446
 447
 448 class BalanceLabel(QLabel):
 449
 450     SHOW_CONNECTING = 1
 451     SHOW_BALANCE = 2
 452     SHOW_AMOUNT = 3
 453
 454     def __init__(self, change_quote_currency, parent=None):
 455         super(QLabel, self).__init__(_("Connecting..."), parent)
 456         self.change_quote_currency = change_quote_currency
 457         self.state = self.SHOW_CONNECTING
 458         self.balance_text = ""
 459         self.amount_text = ""
 460
 461     def mousePressEvent(self, event):
 462         """Change the fiat currency selection if window background is clicked."""
 463         if self.state != self.SHOW_CONNECTING:
 464             self.change_quote_currency()
 465
 466     def set_balance_text(self, btc_balance, quote_text):
 467         """Set the amount of bitcoins in the gui."""
 468         if self.state == self.SHOW_CONNECTING:
 469             self.state = self.SHOW_BALANCE
 470         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)
 471         if self.state == self.SHOW_BALANCE:
 472             self.setText(self.balance_text)
 473
 474     def set_amount_text(self, quote_text):
 475         self.amount_text = "<span style='font-size: 10pt'>%s</span>" % quote_text
 476         if self.state == self.SHOW_AMOUNT:
 477             self.setText(self.amount_text)
 478
 479     def show_balance(self):
 480         if self.state == self.SHOW_AMOUNT:
 481             self.state = self.SHOW_BALANCE
 482             self.setText(self.balance_text)
 483
 484     def show_amount(self):
 485         if self.state == self.SHOW_BALANCE:
 486             self.state = self.SHOW_AMOUNT
 487             self.setText(self.amount_text)
 488
 489 def ok_cancel_buttons(dialog):
 490     row_layout = QHBoxLayout()
 491     row_layout.addStretch(1)
 492     ok_button = QPushButton(_("OK"))
 493     row_layout.addWidget(ok_button)
 494     ok_button.clicked.connect(dialog.accept)
 495     cancel_button = QPushButton(_("Cancel"))
 496     row_layout.addWidget(cancel_button)
 497     cancel_button.clicked.connect(dialog.reject)
 498     return row_layout
 499
 500 class PasswordDialog(QDialog):
 501
 502     def __init__(self, parent):
 503         super(QDialog, self).__init__(parent)
 504
 505         self.setModal(True)
 506
 507         self.password_input = QLineEdit()
 508         self.password_input.setEchoMode(QLineEdit.Password)
 509
 510         main_layout = QVBoxLayout(self)
 511         message = _('Please enter your password')
 512         main_layout.addWidget(QLabel(message))
 513
 514         grid = QGridLayout()
 515         grid.setSpacing(8)
 516         grid.addWidget(QLabel(_('Password')), 1, 0)
 517         grid.addWidget(self.password_input, 1, 1)
 518         main_layout.addLayout(grid)
 519
 520         main_layout.addLayout(ok_cancel_buttons(self))
 521         self.setLayout(main_layout)
 522
 523     def run(self):
 524         if not self.exec_():
 525             return
 526         return unicode(self.password_input.text())
 527
 528 class ReceivePopup(QDialog):
 529
 530     def leaveEvent(self, event):
 531         self.close()
 532
 533     def setup(self, address):
 534         label = QLabel(_("Copied your Bitcoin address to the clipboard!"))
 535         address_display = QLineEdit(address)
 536         address_display.setReadOnly(True)
 537         resize_line_edit_width(address_display, address)
 538
 539         main_layout = QVBoxLayout(self)
 540         main_layout.addWidget(label)
 541         main_layout.addWidget(address_display)
 542
 543         self.setMouseTracking(True)
 544         self.setWindowTitle("Electrum - " + _("Receive Bitcoin payment"))
 545         self.setWindowFlags(Qt.Window|Qt.FramelessWindowHint|
 546                             Qt.MSWindowsFixedSizeDialogHint)
 547         self.layout().setSizeConstraint(QLayout.SetFixedSize)
 548         #self.setFrameStyle(QFrame.WinPanel|QFrame.Raised)
 549         #self.setAlignment(Qt.AlignCenter)
 550
 551     def popup(self):
 552         parent = self.parent()
 553         top_left_pos = parent.mapToGlobal(parent.rect().bottomLeft())
 554         self.move(top_left_pos)
 555         center_mouse_pos = self.mapToGlobal(self.rect().center())
 556         QCursor.setPos(center_mouse_pos)
 557         self.show()
 558
 559 class MiniActuator:
 560     """Initialize the definitions relating to themes and
 561     sending/recieving bitcoins."""
 562
 563
 564     def __init__(self, wallet):
 565         """Retrieve the gui theme used in previous session."""
 566         self.wallet = wallet
 567         self.theme_name = self.wallet.config.get('litegui_theme','Cleanlook')
 568         self.themes = util.load_theme_paths()
 569
 570     def load_theme(self):
 571         """Load theme retrieved from wallet file."""
 572         try:
 573             theme_prefix, theme_path = self.themes[self.theme_name]
 574         except KeyError:
 575             util.print_error("Theme not found!", self.theme_name)
 576             return
 577         QDir.setCurrent(os.path.join(theme_prefix, theme_path))
 578         with open(rsrc("style.css")) as style_file:
 579             qApp.setStyleSheet(style_file.read())
 580
 581     def theme_names(self):
 582         """Sort themes."""
 583         return sorted(self.themes.keys())
 584
 585     def selected_theme(self):
 586         """Select theme."""
 587         return self.theme_name
 588
 589     def change_theme(self, theme_name):
 590         """Change theme."""
 591         self.theme_name = theme_name
 592         self.wallet.config.set_key('litegui_theme',theme_name)
 593         self.load_theme()
 594
 595     def set_configured_currency(self, set_quote_currency):
 596         """Set the inital fiat currency conversion country (USD/EUR/GBP) in
 597         the GUI to what it was set to in the wallet."""
 598         currency = self.wallet.config.get('conversion_currency')
 599         # currency can be none when Electrum is used for the first
 600         # time and no setting has been created yet.
 601         if currency is not None:
 602             set_quote_currency(currency)
 603
 604     def set_config_currency(self, conversion_currency):
 605         """Change the wallet fiat currency country."""
 606         self.wallet.config.set_key('conversion_currency',conversion_currency,True)
 607
 608     def set_servers_gui_stuff(self, servers_menu, servers_group):
 609         self.servers_menu = servers_menu
 610         self.servers_group = servers_group
 611
 612     def populate_servers_menu(self):
 613         interface = self.wallet.interface
 614         if not interface.servers:
 615             print "No servers loaded yet."
 616             self.servers_list = []
 617             for server_string in DEFAULT_SERVERS:
 618                 host, port, protocol = server_string.split(':')
 619                 transports = [(protocol,port)]
 620                 self.servers_list.append((host, transports))
 621         else:
 622             print "Servers loaded."
 623             self.servers_list = interface.servers
 624         server_names = [details[0] for details in self.servers_list]
 625         current_server = interface.server.split(":")[0]
 626         for server_name in server_names:
 627             server_action = self.servers_menu.addAction(server_name)
 628             server_action.setCheckable(True)
 629             if server_name == current_server:
 630                 server_action.setChecked(True)
 631             class SelectServerFunctor:
 632                 def __init__(self, server_name, server_selected):
 633                     self.server_name = server_name
 634                     self.server_selected = server_selected
 635                 def __call__(self, checked):
 636                     if checked:
 637                         # call server_selected
 638                         self.server_selected(self.server_name)
 639             delegate = SelectServerFunctor(server_name, self.server_selected)
 640             server_action.toggled.connect(delegate)
 641             self.servers_group.addAction(server_action)
 642
 643     def update_servers_list(self):
 644         # Clear servers_group
 645         for action in self.servers_group.actions():
 646             self.servers_group.removeAction(action)
 647         self.populate_servers_menu()
 648
 649     def server_selected(self, server_name):
 650         match = [transports for (host, transports) in self.servers_list
 651                  if host == server_name]
 652         assert len(match) == 1
 653         match = match[0]
 654         # Default to TCP if available else use anything
 655         # TODO: protocol should be selectable.
 656         tcp_port = [port for (protocol, port) in match if protocol == "t"]
 657         if len(tcp_port) == 0:
 658             protocol = match[0][0]
 659             port = match[0][1]
 660         else:
 661             protocol = "t"
 662             port = tcp_port[0]
 663         server_line = "%s:%s:%s" % (server_name, port, protocol)
 664
 665         # Should this have exception handling?
 666         self.wallet.interface.set_server(server_line, self.wallet.config.get("proxy"))
 667
 668     def copy_address(self, receive_popup):
 669         """Copy the wallet addresses into the client."""
 670         addrs = [addr for addr in self.wallet.all_addresses()
 671                  if not self.wallet.is_change(addr)]
 672         # Select most recent addresses from gap limit
 673         addrs = addrs[-self.wallet.gap_limit:]
 674         copied_address = random.choice(addrs)
 675         qApp.clipboard().setText(copied_address)
 676         receive_popup.setup(copied_address)
 677         receive_popup.popup()
 678
 679     def send(self, address, amount, parent_window):
 680         """Send bitcoins to the target address."""
 681         dest_address = self.fetch_destination(address)
 682
 683         if dest_address is None or not self.wallet.is_valid(dest_address):
 684             QMessageBox.warning(parent_window, _('Error'),
 685                 _('Invalid Bitcoin Address') + ':\n' + address, _('OK'))
 686             return False
 687
 688         convert_amount = lambda amount: \
 689             int(D(unicode(amount)) * bitcoin(1))
 690         amount = convert_amount(amount)
 691
 692         if self.wallet.use_encryption:
 693             password_dialog = PasswordDialog(parent_window)
 694             password = password_dialog.run()
 695             if not password:
 696                 return
 697         else:
 698             password = None
 699
 700         fee = 0
 701         # 0.1 BTC = 10000000
 702         if amount < bitcoin(1) / 10:
 703             # 0.001 BTC
 704             fee = bitcoin(1) / 1000
 705
 706         try:
 707             tx = self.wallet.mktx(dest_address, amount, "", password, fee)
 708         except BaseException as error:
 709             QMessageBox.warning(parent_window, _('Error'), str(error), _('OK'))
 710             return False
 711
 712         status, message = self.wallet.sendtx(tx)
 713         if not status:
 714             import tempfile
 715             dumpf = tempfile.NamedTemporaryFile(delete=False)
 716             dumpf.write(tx)
 717             dumpf.close()
 718             print "Dumped error tx to", dumpf.name
 719             QMessageBox.warning(parent_window, _('Error'), message, _('OK'))
 720             return False
 721
 722         QMessageBox.information(parent_window, '',
 723             _('Payment sent.') + '\n' + message, _('OK'))
 724         return True
 725
 726     def fetch_destination(self, address):
 727         recipient = unicode(address).strip()
 728
 729         # alias
 730         match1 = re.match("^(|([\w\-\.]+)@)((\w[\w\-]+\.)+[\w\-]+)$",
 731                           recipient)
 732
 733         # label or alias, with address in brackets
 734         match2 = re.match("(.*?)\s*\<([1-9A-HJ-NP-Za-km-z]{26,})\>",
 735                           recipient)
 736
 737         if match1:
 738             dest_address = \
 739                 self.wallet.get_alias(recipient, True,
 740                                       self.show_message, self.question)
 741             return dest_address
 742         elif match2:
 743             return match2.group(2)
 744         else:
 745             return recipient
 746
 747     def is_valid(self, address):
 748         """Check if bitcoin address is valid."""
 749         return self.wallet.is_valid(address)
 750
 751     def acceptbit(self, currency):
 752         master_pubkey = self.wallet.master_public_key.encode("hex")
 753         url = "http://acceptbit.com/mpk/%s/%s" % (master_pubkey, currency)
 754         webbrowser.open(url)
 755
 756     def show_seed_dialog(self):
 757         gui_qt.ElectrumWindow.show_seed_dialog(self.wallet)
 758
 759 class MiniDriver(QObject):
 760
 761     INITIALIZING = 0
 762     CONNECTING = 1
 763     SYNCHRONIZING = 2
 764     READY = 3
 765
 766     def __init__(self, wallet, window):
 767         super(QObject, self).__init__()
 768
 769         self.wallet = wallet
 770         self.window = window
 771
 772         self.wallet.register_callback(self.update_callback)
 773
 774         self.state = None
 775
 776         self.initializing()
 777         self.connect(self, SIGNAL("updatesignal()"), self.update)
 778         self.update_callback()
 779
 780     # This is a hack to workaround that Qt does not like changing the
 781     # window properties from this other thread before the runloop has
 782     # been called from.
 783     def update_callback(self):
 784         self.emit(SIGNAL("updatesignal()"))
 785
 786     def update(self):
 787         if not self.wallet.interface:
 788             self.initializing()
 789         elif not self.wallet.interface.is_connected:
 790             self.connecting()
 791         elif not self.wallet.blocks == -1:
 792             self.connecting()
 793         elif not self.wallet.up_to_date:
 794             self.synchronizing()
 795         else:
 796             self.ready()
 797
 798         if self.wallet.up_to_date:
 799             self.update_balance()
 800             self.update_completions()
 801             self.update_history()
 802
 803     def initializing(self):
 804         if self.state == self.INITIALIZING:
 805             return
 806         self.state = self.INITIALIZING
 807         self.window.deactivate()
 808
 809     def connecting(self):
 810         if self.state == self.CONNECTING:
 811             return
 812         self.state = self.CONNECTING
 813         self.window.deactivate()
 814
 815     def synchronizing(self):
 816         if self.state == self.SYNCHRONIZING:
 817             return
 818         self.state = self.SYNCHRONIZING
 819         self.window.deactivate()
 820
 821     def ready(self):
 822         if self.state == self.READY:
 823             return
 824         self.state = self.READY
 825         self.window.activate()
 826
 827     def update_balance(self):
 828         conf_balance, unconf_balance = self.wallet.get_balance()
 829         balance = D(conf_balance + unconf_balance)
 830         self.window.set_balances(balance)
 831
 832     def update_completions(self):
 833         completions = []
 834         for addr, label in self.wallet.labels.items():
 835             if addr in self.wallet.addressbook:
 836                 completions.append("%s <%s>" % (label, addr))
 837         completions = completions + self.wallet.aliases.keys()
 838         self.window.update_completions(completions)
 839
 840     def update_history(self):
 841         tx_history = self.wallet.get_tx_history()
 842         self.window.update_history(tx_history)
 843
 844 if __name__ == "__main__":
 845     app = QApplication(sys.argv)
 846     with open(rsrc("style.css")) as style_file:
 847         app.setStyleSheet(style_file.read())
 848     mini = MiniWindow()
 849     sys.exit(app.exec_())
 850