gui/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     import PyQt4.QtCore as QtCore
   8
   9 except ImportError:
  10     print "You need to have PyQT installed to run Electrum in graphical mode."
  11     print "If you have pip installed try 'sudo pip install pyqt' if you are on Debian/Ubuntu try 'sudo apt-get install python-qt4'."
  12     sys.exit(0)
  13
  14 from decimal import Decimal as D
  15 from electrum.util import get_resource_path as rsrc
  16 from electrum.bitcoin import is_valid
  17 from i18n import _
  18 import decimal
  19 import exchange_rate
  20 import os.path
  21 import random
  22 import re
  23 import time
  24 from electrum import wallet
  25 import webbrowser
  26 import history_widget
  27 import receiving_widget
  28 from electrum import util
  29 import csv
  30 import datetime
  31
  32 from electrum.version import ELECTRUM_VERSION as electrum_version
  33 from electrum.util import format_satoshis, age
  34 import gui_qt
  35 import shutil
  36
  37 bitcoin = lambda v: v * 100000000
  38
  39 def IconButton(filename, parent=None):
  40     pixmap = QPixmap(filename)
  41     icon = QIcon(pixmap)
  42     return QPushButton(icon, "", parent)
  43
  44 class Timer(QThread):
  45     def run(self):
  46         while True:
  47             self.emit(SIGNAL('timersignal'))
  48             time.sleep(0.5)
  49
  50 def resize_line_edit_width(line_edit, text_input):
  51     metrics = QFontMetrics(qApp.font())
  52     # Create an extra character to add some space on the end
  53     text_input += "A"
  54     line_edit.setMinimumWidth(metrics.width(text_input))
  55
  56 def load_theme_name(theme_path):
  57     try:
  58         with open(os.path.join(theme_path, "name.cfg")) as name_cfg_file:
  59             return name_cfg_file.read().rstrip("\n").strip()
  60     except IOError:
  61         return None
  62
  63
  64 def theme_dirs_from_prefix(prefix):
  65     if not os.path.exists(prefix):
  66         return []
  67     theme_paths = {}
  68     for potential_theme in os.listdir(prefix):
  69         theme_full_path = os.path.join(prefix, potential_theme)
  70         theme_css = os.path.join(theme_full_path, "style.css")
  71         if not os.path.exists(theme_css):
  72             continue
  73         theme_name = load_theme_name(theme_full_path)
  74         if theme_name is None:
  75             continue
  76         theme_paths[theme_name] = prefix, potential_theme
  77     return theme_paths
  78
  79 def load_theme_paths():
  80     theme_paths = {}
  81     prefixes = (util.local_data_dir(), util.appdata_dir())
  82     for prefix in prefixes:
  83         theme_paths.update(theme_dirs_from_prefix(prefix))
  84     return theme_paths
  85
  86
  87 def csv_transaction(wallet):
  88     try:
  89         select_export = _('Select file to export your wallet transactions to')
  90         fileName = QFileDialog.getSaveFileName(QWidget(), select_export, os.path.expanduser('~/electrum-history.csv'), "*.csv")
  91         if fileName:
  92             with open(fileName, "w+") as csvfile:
  93                 transaction = csv.writer(csvfile)
  94                 transaction.writerow(["transaction_hash","label", "confirmations", "value", "fee", "balance", "timestamp"])
  95                 for item in wallet.get_tx_history():
  96                     tx_hash, confirmations, is_mine, value, fee, balance, timestamp = item
  97                     if confirmations:
  98                         if timestamp is not None:
  99                             try:
 100                                 time_string = datetime.datetime.fromtimestamp(timestamp).isoformat(' ')[:-3]
 101                             except [RuntimeError, TypeError, NameError] as reason:
 102                                 time_string = "unknown"
 103                                 pass
 104                         else:
 105                           time_string = "unknown"
 106                     else:
 107                         time_string = "pending"
 108
 109                     if value is not None:
 110                         value_string = format_satoshis(value, True, wallet.num_zeros)
 111                     else:
 112                         value_string = '--'
 113
 114                     if fee is not None:
 115                         fee_string = format_satoshis(fee, True, wallet.num_zeros)
 116                     else:
 117                         fee_string = '0'
 118
 119                     if tx_hash:
 120                         label, is_default_label = wallet.get_label(tx_hash)
 121                     else:
 122                       label = ""
 123
 124                     balance_string = format_satoshis(balance, False, wallet.num_zeros)
 125                     transaction.writerow([tx_hash, label, confirmations, value_string, fee_string, balance_string, time_string])
 126                 QMessageBox.information(None,"CSV Export created", "Your CSV export has been successfully created.")
 127     except (IOError, os.error), reason:
 128         export_error_label = _("Electrum was unable to produce a transaction export.")
 129         QMessageBox.critical(None,"Unable to create csv", export_error_label + "\n" + str(reason))
 130
 131
 132 class ElectrumGui(QObject):
 133
 134     def __init__(self, wallet, config, expert=None):
 135         super(QObject, self).__init__()
 136
 137         self.wallet = wallet
 138         self.config = config
 139         self.check_qt_version()
 140         self.expert = expert
 141         if self.expert != None:
 142             self.app = self.expert.app
 143         else:
 144             self.app = QApplication(sys.argv)
 145
 146     def check_qt_version(self):
 147         qtVersion = qVersion()
 148         if not(int(qtVersion[0]) >= 4 and int(qtVersion[2]) >= 7):
 149             app = QApplication(sys.argv)
 150             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 'Classic' GUI")
 151             self.config.set_key('gui','classic',True)
 152             sys.exit(0)
 153
 154
 155     def main(self, url):
 156         actuator = MiniActuator(self.wallet)
 157         # Should probably not modify the current path but instead
 158         # change the behaviour of rsrc(...)
 159         old_path = QDir.currentPath()
 160         actuator.load_theme()
 161
 162         self.mini = MiniWindow(actuator, self.expand, self.config)
 163         driver = MiniDriver(self.wallet, self.mini)
 164
 165         # Reset path back to original value now that loading the GUI
 166         # is completed.
 167         QDir.setCurrent(old_path)
 168
 169         if url:
 170             self.set_url(url)
 171
 172         if self.expert == None:
 173             timer = Timer()
 174             timer.start()
 175             self.expert = gui_qt.ElectrumWindow(self.wallet, self.config)
 176             self.expert.app = self.app
 177             self.expert.connect_slots(timer)
 178             self.expert.update_wallet()
 179             self.app.exec_()
 180
 181     def expand(self):
 182         """Hide the lite mode window and show pro-mode."""
 183         self.config.set_key('gui', 'classic', True)
 184         self.mini.hide()
 185         self.expert.show()
 186
 187     def set_url(self, url):
 188         payto, amount, label, message, signature, identity, url = \
 189             self.wallet.parse_url(url, self.show_message, self.show_question)
 190         self.mini.set_payment_fields(payto, amount)
 191
 192     def show_message(self, message):
 193         QMessageBox.information(self.mini, _("Message"), message, _("OK"))
 194
 195     def show_question(self, message):
 196         choice = QMessageBox.question(self.mini, _("Message"), message,
 197                                       QMessageBox.Yes|QMessageBox.No,
 198                                       QMessageBox.No)
 199         return choice == QMessageBox.Yes
 200
 201     def restore_or_create(self):
 202         qt_gui_object = gui_qt.ElectrumGui(self.wallet, self.app)
 203         return qt_gui_object.restore_or_create()
 204
 205 class TransactionWindow(QDialog):
 206
 207     def set_label(self):
 208         label = unicode(self.label_edit.text())
 209         self.parent.wallet.labels[self.tx_id] = label
 210
 211         super(TransactionWindow, self).accept()
 212
 213     def __init__(self, transaction_id, parent):
 214         super(TransactionWindow, self).__init__()
 215
 216         self.tx_id = str(transaction_id)
 217         self.parent = parent
 218
 219         self.setModal(True)
 220         self.resize(200,100)
 221         self.setWindowTitle(_("Transaction successfully sent"))
 222
 223         self.layout = QGridLayout(self)
 224         history_label = "%s\n%s" % (_("Your transaction has been sent."), _("Please enter a label for this transaction for future reference."))
 225         self.layout.addWidget(QLabel(history_label))
 226
 227         self.label_edit = QLineEdit()
 228         self.label_edit.setPlaceholderText(_("Transaction label"))
 229         self.label_edit.setObjectName("label_input")
 230         self.label_edit.setAttribute(Qt.WA_MacShowFocusRect, 0)
 231         self.label_edit.setFocusPolicy(Qt.ClickFocus)
 232         self.layout.addWidget(self.label_edit)
 233
 234         self.save_button = QPushButton(_("Save"))
 235         self.layout.addWidget(self.save_button)
 236         self.save_button.clicked.connect(self.set_label)
 237
 238         self.exec_()
 239
 240 class MiniWindow(QDialog):
 241
 242     def __init__(self, actuator, expand_callback, config):
 243         super(MiniWindow, self).__init__()
 244         tx = "e08115d0f7819aee65b9d24f81ef9d46eb62bb67ddef5318156cbc3ceb7b703e"
 245
 246         self.actuator = actuator
 247         self.config = config
 248         self.btc_balance = None
 249         self.quote_currencies = ["BRL", "CNY", "EUR", "GBP", "RUB", "USD"]
 250         self.actuator.set_configured_currency(self.set_quote_currency)
 251         self.exchanger = exchange_rate.Exchanger(self)
 252         # Needed because price discovery is done in a different thread
 253         # which needs to be sent back to this main one to update the GUI
 254         self.connect(self, SIGNAL("refresh_balance()"), self.refresh_balance)
 255
 256         self.balance_label = BalanceLabel(self.change_quote_currency)
 257         self.balance_label.setObjectName("balance_label")
 258
 259
 260         # Bitcoin address code
 261         self.address_input = QLineEdit()
 262         self.address_input.setPlaceholderText(_("Enter a Bitcoin address or contact"))
 263         self.address_input.setObjectName("address_input")
 264
 265         self.address_input.setFocusPolicy(Qt.ClickFocus)
 266
 267         self.address_input.textChanged.connect(self.address_field_changed)
 268         resize_line_edit_width(self.address_input,
 269                                "1BtaFUr3qVvAmwrsuDuu5zk6e4s2rxd2Gy")
 270
 271         self.address_completions = QStringListModel()
 272         address_completer = QCompleter(self.address_input)
 273         address_completer.setCaseSensitivity(False)
 274         address_completer.setModel(self.address_completions)
 275         self.address_input.setCompleter(address_completer)
 276
 277         address_layout = QHBoxLayout()
 278         address_layout.addWidget(self.address_input)
 279
 280         self.amount_input = QLineEdit()
 281         self.amount_input.setPlaceholderText(_("... and amount"))
 282         self.amount_input.setObjectName("amount_input")
 283
 284         self.amount_input.setFocusPolicy(Qt.ClickFocus)
 285         # This is changed according to the user's displayed balance
 286         self.amount_validator = QDoubleValidator(self.amount_input)
 287         self.amount_validator.setNotation(QDoubleValidator.StandardNotation)
 288         self.amount_validator.setDecimals(8)
 289         self.amount_input.setValidator(self.amount_validator)
 290
 291         # This removes the very ugly OSX highlighting, please leave this in :D
 292         self.address_input.setAttribute(Qt.WA_MacShowFocusRect, 0)
 293         self.amount_input.setAttribute(Qt.WA_MacShowFocusRect, 0)
 294         self.amount_input.textChanged.connect(self.amount_input_changed)
 295
 296         self.send_button = QPushButton(_("&Send"))
 297         self.send_button.setObjectName("send_button")
 298         self.send_button.setDisabled(True);
 299         self.send_button.clicked.connect(self.send)
 300
 301         # Creating the receive button
 302         self.switch_button = QPushButton( QIcon(":icons/switchgui.png"),'' )
 303         self.switch_button.setMaximumWidth(25)
 304         self.switch_button.setFlat(True)
 305         self.switch_button.clicked.connect(expand_callback)
 306
 307         main_layout = QGridLayout(self)
 308
 309         main_layout.addWidget(self.balance_label, 0, 0, 1, 3)
 310         main_layout.addWidget(self.switch_button, 0, 3)
 311
 312         main_layout.addWidget(self.address_input, 1, 0, 1, 4)
 313         main_layout.addWidget(self.amount_input, 2, 0, 1, 2)
 314         main_layout.addWidget(self.send_button, 2, 2, 1, 2)
 315
 316         self.send_button.setMaximumWidth(125)
 317
 318         self.history_list = history_widget.HistoryWidget()
 319         self.history_list.setObjectName("history")
 320         self.history_list.hide()
 321         self.history_list.setAlternatingRowColors(True)
 322
 323         main_layout.addWidget(self.history_list, 3, 0, 1, 4)
 324
 325         self.receiving = receiving_widget.ReceivingWidget(self)
 326         self.receiving.setObjectName("receiving")
 327
 328         # Add to the right side
 329         self.receiving_box = QGroupBox(_("Select a receiving address"))
 330         extra_layout = QGridLayout()
 331
 332         # Checkbox to filter used addresses
 333         hide_used = QCheckBox(_('Hide used addresses'))
 334         hide_used.setChecked(True)
 335         hide_used.stateChanged.connect(self.receiving.toggle_used)
 336
 337         # Events for receiving addresses
 338         self.receiving.clicked.connect(self.receiving.copy_address)
 339         self.receiving.itemDoubleClicked.connect(self.receiving.edit_label)
 340         self.receiving.itemChanged.connect(self.receiving.update_label)
 341
 342
 343         # Label
 344         extra_layout.addWidget( QLabel(_('Selecting an address will copy it to the clipboard.') + '\n' + _('Double clicking the label will allow you to edit it.') ),0,0)
 345
 346         extra_layout.addWidget(self.receiving, 1,0)
 347         extra_layout.addWidget(hide_used, 2,0)
 348         extra_layout.setColumnMinimumWidth(0,200)
 349
 350         self.receiving_box.setLayout(extra_layout)
 351         main_layout.addWidget(self.receiving_box,0,4,-1,3)
 352         self.receiving_box.hide()
 353
 354         # Creating the menu bar
 355         menubar = QMenuBar()
 356         electrum_menu = menubar.addMenu(_("&Electrum"))
 357
 358         quit_option = electrum_menu.addAction(_("&Close"))
 359
 360         quit_option.triggered.connect(self.close)
 361
 362         view_menu = menubar.addMenu(_("&View"))
 363         extra_menu = menubar.addMenu(_("&Extra"))
 364
 365         backup_wallet = extra_menu.addAction( _("&Create wallet backup"))
 366         backup_wallet.triggered.connect(self.backup_wallet)
 367
 368         export_csv = extra_menu.addAction( _("&Export transactions to CSV") )
 369         export_csv.triggered.connect(lambda: csv_transaction(self.actuator.wallet))
 370
 371         master_key = extra_menu.addAction( _("Copy master public key to clipboard") )
 372         master_key.triggered.connect(self.actuator.copy_master_public_key)
 373
 374         expert_gui = view_menu.addAction(_("&Classic GUI"))
 375         expert_gui.triggered.connect(expand_callback)
 376         themes_menu = view_menu.addMenu(_("&Themes"))
 377         selected_theme = self.actuator.selected_theme()
 378         theme_group = QActionGroup(self)
 379         for theme_name in self.actuator.theme_names():
 380             theme_action = themes_menu.addAction(theme_name)
 381             theme_action.setCheckable(True)
 382             if selected_theme == theme_name:
 383                 theme_action.setChecked(True)
 384             class SelectThemeFunctor:
 385                 def __init__(self, theme_name, toggle_theme):
 386                     self.theme_name = theme_name
 387                     self.toggle_theme = toggle_theme
 388                 def __call__(self, checked):
 389                     if checked:
 390                         self.toggle_theme(self.theme_name)
 391             delegate = SelectThemeFunctor(theme_name, self.toggle_theme)
 392             theme_action.toggled.connect(delegate)
 393             theme_group.addAction(theme_action)
 394         view_menu.addSeparator()
 395
 396         show_receiving = view_menu.addAction(_("Show Receiving addresses"))
 397         show_receiving.setCheckable(True)
 398         show_receiving.toggled.connect(self.toggle_receiving_layout)
 399
 400         show_receiving_toggle = self.config.get("gui_show_receiving",False)
 401         show_receiving.setChecked(show_receiving_toggle)
 402         self.show_receiving = show_receiving
 403
 404         self.toggle_receiving_layout(show_receiving_toggle)
 405
 406
 407         show_history = view_menu.addAction(_("Show History"))
 408         show_history.setCheckable(True)
 409         show_history.toggled.connect(self.show_history)
 410
 411         help_menu = menubar.addMenu(_("&Help"))
 412         the_website = help_menu.addAction(_("&Website"))
 413         the_website.triggered.connect(self.the_website)
 414         help_menu.addSeparator()
 415         report_bug = help_menu.addAction(_("&Report Bug"))
 416         report_bug.triggered.connect(self.show_report_bug)
 417         show_about = help_menu.addAction(_("&About"))
 418         show_about.triggered.connect(self.show_about)
 419         main_layout.setMenuBar(menubar)
 420         self.main_layout = main_layout
 421
 422         quit_shortcut = QShortcut(QKeySequence("Ctrl+Q"), self)
 423         quit_shortcut.activated.connect(self.close)
 424         close_shortcut = QShortcut(QKeySequence("Ctrl+W"), self)
 425         close_shortcut.activated.connect(self.close)
 426
 427         g = self.config.get("winpos-lite",[4, 25, 351, 149])
 428         self.setGeometry(g[0], g[1], g[2], g[3])
 429
 430         show_hist = self.config.get("gui_show_history",False)
 431         show_history.setChecked(show_hist)
 432         self.show_history(show_hist)
 433
 434         self.setWindowIcon(QIcon(":electrum.png"))
 435         self.setWindowTitle("Electrum")
 436         self.setWindowFlags(Qt.Window|Qt.MSWindowsFixedSizeDialogHint)
 437         self.layout().setSizeConstraint(QLayout.SetFixedSize)
 438         self.setObjectName("main_window")
 439         self.show()
 440
 441
 442     def toggle_theme(self, theme_name):
 443         old_path = QDir.currentPath()
 444         self.actuator.change_theme(theme_name)
 445         # Recompute style globally
 446         qApp.style().unpolish(self)
 447         qApp.style().polish(self)
 448         QDir.setCurrent(old_path)
 449
 450     def closeEvent(self, event):
 451         g = self.geometry()
 452         self.config.set_key("winpos-lite", [g.left(),g.top(),g.width(),g.height()],True)
 453         self.config.set_key("gui_show_history", self.history_list.isVisible(),True)
 454         self.config.set_key("gui_show_receiving", self.receiving_box.isVisible(),True)
 455
 456         super(MiniWindow, self).closeEvent(event)
 457         qApp.quit()
 458
 459     def set_payment_fields(self, dest_address, amount):
 460         self.address_input.setText(dest_address)
 461         self.address_field_changed(dest_address)
 462         self.amount_input.setText(amount)
 463
 464     def activate(self):
 465         pass
 466
 467     def deactivate(self):
 468         pass
 469
 470     def set_quote_currency(self, currency):
 471         """Set and display the fiat currency country."""
 472         assert currency in self.quote_currencies
 473         self.quote_currencies.remove(currency)
 474         self.quote_currencies.insert(0, currency)
 475         self.refresh_balance()
 476
 477     def change_quote_currency(self):
 478         self.quote_currencies = \
 479             self.quote_currencies[1:] + self.quote_currencies[0:1]
 480         self.actuator.set_config_currency(self.quote_currencies[0])
 481         self.refresh_balance()
 482
 483     def refresh_balance(self):
 484         if self.btc_balance is None:
 485             # Price has been discovered before wallet has been loaded
 486             # and server connect... so bail.
 487             return
 488         self.set_balances(self.btc_balance)
 489         self.amount_input_changed(self.amount_input.text())
 490
 491     def set_balances(self, btc_balance):
 492         """Set the bitcoin balance and update the amount label accordingly."""
 493         self.btc_balance = btc_balance
 494         quote_text = self.create_quote_text(btc_balance)
 495         if quote_text:
 496             quote_text = "(%s)" % quote_text
 497         btc_balance = "%.2f" % (btc_balance / bitcoin(1))
 498         self.balance_label.set_balance_text(btc_balance, quote_text)
 499         self.setWindowTitle("Electrum %s - %s BTC" % (electrum_version, btc_balance))
 500
 501     def amount_input_changed(self, amount_text):
 502         """Update the number of bitcoins displayed."""
 503         self.check_button_status()
 504
 505         try:
 506             amount = D(str(amount_text))
 507         except decimal.InvalidOperation:
 508             self.balance_label.show_balance()
 509         else:
 510             quote_text = self.create_quote_text(amount * bitcoin(1))
 511             if quote_text:
 512                 self.balance_label.set_amount_text(quote_text)
 513                 self.balance_label.show_amount()
 514             else:
 515                 self.balance_label.show_balance()
 516
 517     def create_quote_text(self, btc_balance):
 518         """Return a string copy of the amount fiat currency the
 519         user has in bitcoins."""
 520         quote_currency = self.quote_currencies[0]
 521         quote_balance = self.exchanger.exchange(btc_balance, quote_currency)
 522         if quote_balance is None:
 523             quote_text = ""
 524         else:
 525             quote_text = "%.2f %s" % ((quote_balance / bitcoin(1)),
 526                                       quote_currency)
 527         return quote_text
 528
 529     def send(self):
 530         if self.actuator.send(self.address_input.text(),
 531                               self.amount_input.text(), self):
 532             self.address_input.setText("")
 533             self.amount_input.setText("")
 534
 535     def check_button_status(self):
 536         """Check that the bitcoin address is valid and that something
 537         is entered in the amount before making the send button clickable."""
 538         try:
 539             value = D(str(self.amount_input.text())) * 10**8
 540         except decimal.InvalidOperation:
 541             value = None
 542         # self.address_input.property(...) returns a qVariant, not a bool.
 543         # The == is needed to properly invoke a comparison.
 544         if (self.address_input.property("isValid") == True and
 545             value is not None and 0 < value <= self.btc_balance):
 546             self.send_button.setDisabled(False)
 547         else:
 548             self.send_button.setDisabled(True)
 549
 550     def address_field_changed(self, address):
 551         # label or alias, with address in brackets
 552         match2 = re.match("(.*?)\s*\<([1-9A-HJ-NP-Za-km-z]{26,})\>",
 553                           address)
 554         if match2:
 555           address = match2.group(2)
 556           self.address_input.setText(address)
 557
 558         if is_valid(address):
 559             self.check_button_status()
 560             self.address_input.setProperty("isValid", True)
 561             self.recompute_style(self.address_input)
 562         else:
 563             self.send_button.setDisabled(True)
 564             self.address_input.setProperty("isValid", False)
 565             self.recompute_style(self.address_input)
 566
 567         if len(address) == 0:
 568             self.address_input.setProperty("isValid", None)
 569             self.recompute_style(self.address_input)
 570
 571     def recompute_style(self, element):
 572         self.style().unpolish(element)
 573         self.style().polish(element)
 574
 575     def copy_address(self):
 576         receive_popup = ReceivePopup(self.receive_button)
 577         self.actuator.copy_address(receive_popup)
 578
 579     def update_completions(self, completions):
 580         self.address_completions.setStringList(completions)
 581
 582
 583     def update_history(self, tx_history):
 584
 585         self.history_list.empty()
 586
 587         for item in tx_history[-10:]:
 588             tx_hash, conf, is_mine, value, fee, balance, timestamp = item
 589             label = self.actuator.wallet.get_label(tx_hash)[0]
 590             #amount = D(value) / 10**8
 591             v_str = format_satoshis(value, True)
 592             self.history_list.append(label, v_str, age(timestamp))
 593
 594     def acceptbit(self):
 595         self.actuator.acceptbit(self.quote_currencies[0])
 596
 597     def the_website(self):
 598         webbrowser.open("http://electrum.org")
 599
 600     def show_about(self):
 601         QMessageBox.about(self, "Electrum",
 602             _("Version")+" %s" % (electrum_version) + "\n\n" + _("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 conjunction with high-performance servers that handle the most complicated parts of the Bitcoin system."))
 603
 604     def show_report_bug(self):
 605         QMessageBox.information(self, "Electrum - " + _("Reporting Bugs"),
 606             _("Please report any bugs as issues on github:")+" <a href=\"https://github.com/spesmilo/electrum/issues\">https://github.com/spesmilo/electrum/issues</a>")
 607
 608     def toggle_receiving_layout(self, toggle_state):
 609         if toggle_state:
 610           self.receiving_box.show()
 611         else:
 612           self.receiving_box.hide()
 613
 614     def show_history(self, toggle_state):
 615         if toggle_state:
 616             self.main_layout.setRowMinimumHeight(3,200)
 617             self.history_list.show()
 618         else:
 619             self.main_layout.setRowMinimumHeight(3,0)
 620             self.history_list.hide()
 621
 622     def backup_wallet(self):
 623         try:
 624           folderName = QFileDialog.getExistingDirectory(QWidget(), _('Select folder to save a copy of your wallet to'), os.path.expanduser('~/'))
 625           if folderName:
 626             sourceFile = util.user_dir() + '/electrum.dat'
 627             shutil.copy2(sourceFile, str(folderName))
 628             QMessageBox.information(None,"Wallet backup created", _("A copy of your wallet file was created in")+" '%s'" % str(folderName))
 629         except (IOError, os.error), reason:
 630           QMessageBox.critical(None,"Unable to create backup", _("Electrum was unable to copy your wallet file to the specified location.")+"\n" + str(reason))
 631
 632
 633
 634
 635 class BalanceLabel(QLabel):
 636
 637     SHOW_CONNECTING = 1
 638     SHOW_BALANCE = 2
 639     SHOW_AMOUNT = 3
 640
 641     def __init__(self, change_quote_currency, parent=None):
 642         super(QLabel, self).__init__(_("Connecting..."), parent)
 643         self.change_quote_currency = change_quote_currency
 644         self.state = self.SHOW_CONNECTING
 645         self.balance_text = ""
 646         self.amount_text = ""
 647
 648     def mousePressEvent(self, event):
 649         """Change the fiat currency selection if window background is clicked."""
 650         if self.state != self.SHOW_CONNECTING:
 651             self.change_quote_currency()
 652
 653     def set_balance_text(self, btc_balance, quote_text):
 654         """Set the amount of bitcoins in the gui."""
 655         if self.state == self.SHOW_CONNECTING:
 656             self.state = self.SHOW_BALANCE
 657         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)
 658         if self.state == self.SHOW_BALANCE:
 659             self.setText(self.balance_text)
 660
 661     def set_amount_text(self, quote_text):
 662         self.amount_text = "<span style='font-size: 10pt'>%s</span>" % quote_text
 663         if self.state == self.SHOW_AMOUNT:
 664             self.setText(self.amount_text)
 665
 666     def show_balance(self):
 667         if self.state == self.SHOW_AMOUNT:
 668             self.state = self.SHOW_BALANCE
 669             self.setText(self.balance_text)
 670
 671     def show_amount(self):
 672         if self.state == self.SHOW_BALANCE:
 673             self.state = self.SHOW_AMOUNT
 674             self.setText(self.amount_text)
 675
 676 def ok_cancel_buttons(dialog):
 677     row_layout = QHBoxLayout()
 678     row_layout.addStretch(1)
 679     ok_button = QPushButton(_("OK"))
 680     row_layout.addWidget(ok_button)
 681     ok_button.clicked.connect(dialog.accept)
 682     cancel_button = QPushButton(_("Cancel"))
 683     row_layout.addWidget(cancel_button)
 684     cancel_button.clicked.connect(dialog.reject)
 685     return row_layout
 686
 687 class PasswordDialog(QDialog):
 688
 689     def __init__(self, parent):
 690         super(QDialog, self).__init__(parent)
 691
 692         self.setModal(True)
 693
 694         self.password_input = QLineEdit()
 695         self.password_input.setEchoMode(QLineEdit.Password)
 696
 697         main_layout = QVBoxLayout(self)
 698         message = _('Please enter your password')
 699         main_layout.addWidget(QLabel(message))
 700
 701         grid = QGridLayout()
 702         grid.setSpacing(8)
 703         grid.addWidget(QLabel(_('Password')), 1, 0)
 704         grid.addWidget(self.password_input, 1, 1)
 705         main_layout.addLayout(grid)
 706
 707         main_layout.addLayout(ok_cancel_buttons(self))
 708         self.setLayout(main_layout)
 709
 710     def run(self):
 711         if not self.exec_():
 712             return
 713         return unicode(self.password_input.text())
 714
 715 class ReceivePopup(QDialog):
 716
 717     def leaveEvent(self, event):
 718         self.close()
 719
 720     def setup(self, address):
 721         label = QLabel(_("Copied your Bitcoin address to the clipboard!"))
 722         address_display = QLineEdit(address)
 723         address_display.setReadOnly(True)
 724         resize_line_edit_width(address_display, address)
 725
 726         main_layout = QVBoxLayout(self)
 727         main_layout.addWidget(label)
 728         main_layout.addWidget(address_display)
 729
 730         self.setMouseTracking(True)
 731         self.setWindowTitle("Electrum - " + _("Receive Bitcoin payment"))
 732         self.setWindowFlags(Qt.Window|Qt.FramelessWindowHint|
 733                             Qt.MSWindowsFixedSizeDialogHint)
 734         self.layout().setSizeConstraint(QLayout.SetFixedSize)
 735         #self.setFrameStyle(QFrame.WinPanel|QFrame.Raised)
 736         #self.setAlignment(Qt.AlignCenter)
 737
 738     def popup(self):
 739         parent = self.parent()
 740         top_left_pos = parent.mapToGlobal(parent.rect().bottomLeft())
 741         self.move(top_left_pos)
 742         center_mouse_pos = self.mapToGlobal(self.rect().center())
 743         QCursor.setPos(center_mouse_pos)
 744         self.show()
 745
 746 class MiniActuator:
 747     """Initialize the definitions relating to themes and
 748     sending/receiving bitcoins."""
 749
 750
 751     def __init__(self, wallet):
 752         """Retrieve the gui theme used in previous session."""
 753         self.wallet = wallet
 754         self.theme_name = self.wallet.config.get('litegui_theme','Cleanlook')
 755         self.themes = load_theme_paths()
 756
 757     def load_theme(self):
 758         """Load theme retrieved from wallet file."""
 759         try:
 760             theme_prefix, theme_path = self.themes[self.theme_name]
 761         except KeyError:
 762             util.print_error("Theme not found!", self.theme_name)
 763             return
 764         QDir.setCurrent(os.path.join(theme_prefix, theme_path))
 765         with open(rsrc("style.css")) as style_file:
 766             qApp.setStyleSheet(style_file.read())
 767
 768     def theme_names(self):
 769         """Sort themes."""
 770         return sorted(self.themes.keys())
 771
 772     def selected_theme(self):
 773         """Select theme."""
 774         return self.theme_name
 775
 776     def change_theme(self, theme_name):
 777         """Change theme."""
 778         self.theme_name = theme_name
 779         self.wallet.config.set_key('litegui_theme',theme_name)
 780         self.load_theme()
 781
 782     def set_configured_currency(self, set_quote_currency):
 783         """Set the inital fiat currency conversion country (USD/EUR/GBP) in
 784         the GUI to what it was set to in the wallet."""
 785         currency = self.wallet.config.get('conversion_currency')
 786         # currency can be none when Electrum is used for the first
 787         # time and no setting has been created yet.
 788         if currency is not None:
 789             set_quote_currency(currency)
 790
 791     def set_config_currency(self, conversion_currency):
 792         """Change the wallet fiat currency country."""
 793         self.wallet.config.set_key('conversion_currency',conversion_currency,True)
 794
 795     def copy_address(self, receive_popup):
 796         """Copy the wallet addresses into the client."""
 797         addrs = [addr for addr in self.wallet.addresses(True)
 798                  if not self.wallet.is_change(addr)]
 799         # Select most recent addresses from gap limit
 800         addrs = addrs[-self.wallet.gap_limit:]
 801         copied_address = random.choice(addrs)
 802         qApp.clipboard().setText(copied_address)
 803         receive_popup.setup(copied_address)
 804         receive_popup.popup()
 805
 806     def waiting_dialog(self, f):
 807         s = Timer()
 808         s.start()
 809         w = QDialog()
 810         w.resize(200, 70)
 811         w.setWindowTitle('Electrum')
 812         l = QLabel('Sending transaction, please wait.')
 813         vbox = QVBoxLayout()
 814         vbox.addWidget(l)
 815         w.setLayout(vbox)
 816         w.show()
 817         def ff():
 818             s = f()
 819             if s: l.setText(s)
 820             else: w.close()
 821         w.connect(s, QtCore.SIGNAL('timersignal'), ff)
 822         w.exec_()
 823         w.destroy()
 824
 825
 826     def send(self, address, amount, parent_window):
 827         """Send bitcoins to the target address."""
 828         dest_address = self.fetch_destination(address)
 829
 830         if dest_address is None or not is_valid(dest_address):
 831             QMessageBox.warning(parent_window, _('Error'),
 832                 _('Invalid Bitcoin Address') + ':\n' + address, _('OK'))
 833             return False
 834
 835         convert_amount = lambda amount: \
 836             int(D(unicode(amount)) * bitcoin(1))
 837         amount = convert_amount(amount)
 838
 839         if self.wallet.use_encryption:
 840             password_dialog = PasswordDialog(parent_window)
 841             password = password_dialog.run()
 842             if not password:
 843                 return
 844         else:
 845             password = None
 846
 847         fee = 0
 848         # 0.1 BTC = 10000000
 849         if amount < bitcoin(1) / 10:
 850             # 0.001 BTC
 851             fee = bitcoin(1) / 1000
 852
 853         try:
 854             tx = self.wallet.mktx([(dest_address, amount)], password, fee)
 855         except BaseException as error:
 856             QMessageBox.warning(parent_window, _('Error'), str(error), _('OK'))
 857             return False
 858
 859         h = self.wallet.send_tx(tx)
 860
 861         self.waiting_dialog(lambda: False if self.wallet.tx_event.isSet() else _("Sending transaction, please wait..."))
 862
 863         status, message = self.wallet.receive_tx(h)
 864
 865         if not status:
 866             import tempfile
 867             dumpf = tempfile.NamedTemporaryFile(delete=False)
 868             dumpf.write(tx)
 869             dumpf.close()
 870             print "Dumped error tx to", dumpf.name
 871             QMessageBox.warning(parent_window, _('Error'), message, _('OK'))
 872             return False
 873
 874         TransactionWindow(message, self)
 875 #        QMessageBox.information(parent_window, '',
 876 #            _('Your transaction has been sent.') + '\n' + message, _('OK'))
 877         return True
 878
 879     def fetch_destination(self, address):
 880         recipient = unicode(address).strip()
 881
 882         # alias
 883         match1 = re.match("^(|([\w\-\.]+)@)((\w[\w\-]+\.)+[\w\-]+)$",
 884                           recipient)
 885
 886         # label or alias, with address in brackets
 887         match2 = re.match("(.*?)\s*\<([1-9A-HJ-NP-Za-km-z]{26,})\>",
 888                           recipient)
 889
 890         if match1:
 891             dest_address = \
 892                 self.wallet.get_alias(recipient, True,
 893                                       self.show_message, self.question)
 894             return dest_address
 895         elif match2:
 896             return match2.group(2)
 897         else:
 898             return recipient
 899
 900
 901     def copy_master_public_key(self):
 902         master_pubkey = self.wallet.master_public_key
 903         qApp.clipboard().setText(master_pubkey)
 904         QMessageBox.information(None, _("Copy successful"), _("Your master public key has been copied to your clipboard."))
 905
 906
 907     def acceptbit(self, currency):
 908         master_pubkey = self.wallet.master_public_key
 909         url = "http://acceptbit.com/mpk/%s/%s" % (master_pubkey, currency)
 910         webbrowser.open(url)
 911
 912     def show_seed_dialog(self):
 913         gui_qt.ElectrumWindow.show_seed_dialog(self.wallet)
 914
 915 class MiniDriver(QObject):
 916
 917     INITIALIZING = 0
 918     CONNECTING = 1
 919     SYNCHRONIZING = 2
 920     READY = 3
 921
 922     def __init__(self, wallet, window):
 923         super(QObject, self).__init__()
 924
 925         self.wallet = wallet
 926         self.window = window
 927
 928         self.wallet.interface.register_callback('updated',self.update_callback)
 929         self.wallet.interface.register_callback('connected', self.update_callback)
 930         self.wallet.interface.register_callback('disconnected', self.update_callback)
 931
 932         self.state = None
 933
 934         self.initializing()
 935         self.connect(self, SIGNAL("updatesignal()"), self.update)
 936         self.update_callback()
 937
 938     # This is a hack to workaround that Qt does not like changing the
 939     # window properties from this other thread before the runloop has
 940     # been called from.
 941     def update_callback(self):
 942         self.emit(SIGNAL("updatesignal()"))
 943
 944     def update(self):
 945         if not self.wallet.interface:
 946             self.initializing()
 947         elif not self.wallet.interface.is_connected:
 948             self.connecting()
 949         elif not self.wallet.up_to_date:
 950             self.synchronizing()
 951         else:
 952             self.ready()
 953
 954         if self.wallet.up_to_date:
 955             self.update_balance()
 956             self.update_completions()
 957             self.update_history()
 958
 959     def initializing(self):
 960         if self.state == self.INITIALIZING:
 961             return
 962         self.state = self.INITIALIZING
 963         self.window.deactivate()
 964
 965     def connecting(self):
 966         if self.state == self.CONNECTING:
 967             return
 968         self.state = self.CONNECTING
 969         self.window.deactivate()
 970
 971     def synchronizing(self):
 972         if self.state == self.SYNCHRONIZING:
 973             return
 974         self.state = self.SYNCHRONIZING
 975         self.window.deactivate()
 976
 977     def ready(self):
 978         if self.state == self.READY:
 979             return
 980         self.state = self.READY
 981         self.window.activate()
 982
 983     def update_balance(self):
 984         conf_balance, unconf_balance = self.wallet.get_balance()
 985         balance = D(conf_balance + unconf_balance)
 986         self.window.set_balances(balance)
 987
 988     def update_completions(self):
 989         completions = []
 990         for addr, label in self.wallet.labels.items():
 991             if addr in self.wallet.addressbook:
 992                 completions.append("%s <%s>" % (label, addr))
 993         completions = completions + self.wallet.aliases.keys()
 994         self.window.update_completions(completions)
 995
 996     def update_history(self):
 997         tx_history = self.wallet.get_tx_history()
 998         self.window.update_history(tx_history)
 999
1000
1001 if __name__ == "__main__":
1002     app = QApplication(sys.argv)
1003     with open(rsrc("style.css")) as style_file:
1004         app.setStyleSheet(style_file.read())
1005     mini = MiniWindow()
1006     sys.exit(app.exec_())
1007