gui/gui_classic/lite_window.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     from PyQt4.Qt import Qt
   8     import PyQt4.QtCore as QtCore
   9
  10 except ImportError:
  11     print "You need to have PyQT installed to run Electrum in graphical mode."
  12     print "If you have pip installed try 'sudo pip install pyqt' if you are on Debian/Ubuntu try 'sudo apt-get install python-qt4'."
  13     sys.exit(0)
  14
  15 from decimal import Decimal as D
  16 from electrum.util import get_resource_path as rsrc
  17 from electrum.bitcoin import is_valid
  18 from i18n import _
  19 import decimal
  20 import exchange_rate
  21 import json
  22 import os.path
  23 import random
  24 import re
  25 import time
  26 from electrum.wallet import Wallet, WalletStorage
  27 import webbrowser
  28 import history_widget
  29 import receiving_widget
  30 from electrum import util
  31 import csv
  32 import datetime
  33
  34 from electrum.version import ELECTRUM_VERSION as electrum_version
  35 from electrum.util import format_satoshis, age
  36
  37 from main_window import ElectrumWindow
  38 import shutil
  39
  40 from qt_util import *
  41
  42 bitcoin = lambda v: v * 100000000
  43
  44 def IconButton(filename, parent=None):
  45     pixmap = QPixmap(filename)
  46     icon = QIcon(pixmap)
  47     return QPushButton(icon, "", parent)
  48
  49 class Timer(QThread):
  50     def run(self):
  51         while True:
  52             self.emit(SIGNAL('timersignal'))
  53             time.sleep(0.5)
  54
  55 def resize_line_edit_width(line_edit, text_input):
  56     metrics = QFontMetrics(qApp.font())
  57     # Create an extra character to add some space on the end
  58     text_input += "A"
  59     line_edit.setMinimumWidth(metrics.width(text_input))
  60
  61 def load_theme_name(theme_path):
  62     try:
  63         with open(os.path.join(theme_path, "name.cfg")) as name_cfg_file:
  64             return name_cfg_file.read().rstrip("\n").strip()
  65     except IOError:
  66         return None
  67
  68
  69 def theme_dirs_from_prefix(prefix):
  70     if not os.path.exists(prefix):
  71         return []
  72     theme_paths = {}
  73     for potential_theme in os.listdir(prefix):
  74         theme_full_path = os.path.join(prefix, potential_theme)
  75         theme_css = os.path.join(theme_full_path, "style.css")
  76         if not os.path.exists(theme_css):
  77             continue
  78         theme_name = load_theme_name(theme_full_path)
  79         if theme_name is None:
  80             continue
  81         theme_paths[theme_name] = prefix, potential_theme
  82     return theme_paths
  83
  84 def load_theme_paths():
  85     theme_paths = {}
  86     prefixes = (util.local_data_dir(), util.appdata_dir())
  87     for prefix in prefixes:
  88         theme_paths.update(theme_dirs_from_prefix(prefix))
  89     return theme_paths
  90
  91
  92 def csv_transaction(wallet):
  93     try:
  94         select_export = _('Select file to export your wallet transactions to')
  95         fileName = QFileDialog.getSaveFileName(QWidget(), select_export, os.path.expanduser('~/electrum-history.csv'), "*.csv")
  96         if fileName:
  97             with open(fileName, "w+") as csvfile:
  98                 transaction = csv.writer(csvfile)
  99                 transaction.writerow(["transaction_hash","label", "confirmations", "value", "fee", "balance", "timestamp"])
 100                 for item in wallet.get_tx_history():
 101                     tx_hash, confirmations, is_mine, value, fee, balance, timestamp = item
 102                     if confirmations:
 103                         if timestamp is not None:
 104                             try:
 105                                 time_string = datetime.datetime.fromtimestamp(timestamp).isoformat(' ')[:-3]
 106                             except [RuntimeError, TypeError, NameError] as reason:
 107                                 time_string = "unknown"
 108                                 pass
 109                         else:
 110                           time_string = "unknown"
 111                     else:
 112                         time_string = "pending"
 113
 114                     if value is not None:
 115                         value_string = format_satoshis(value, True, wallet.num_zeros)
 116                     else:
 117                         value_string = '--'
 118
 119                     if fee is not None:
 120                         fee_string = format_satoshis(fee, True, wallet.num_zeros)
 121                     else:
 122                         fee_string = '0'
 123
 124                     if tx_hash:
 125                         label, is_default_label = wallet.get_label(tx_hash)
 126                     else:
 127                       label = ""
 128
 129                     balance_string = format_satoshis(balance, False, wallet.num_zeros)
 130                     transaction.writerow([tx_hash, label, confirmations, value_string, fee_string, balance_string, time_string])
 131                 QMessageBox.information(None,"CSV Export created", "Your CSV export has been successfully created.")
 132     except (IOError, os.error), reason:
 133         export_error_label = _("Electrum was unable to produce a transaction export.")
 134         QMessageBox.critical(None,"Unable to create csv", export_error_label + "\n" + str(reason))
 135
 136
 137 class ElectrumGui(QObject):
 138
 139     def __init__(self, config, interface, blockchain, expert=None):
 140         super(QObject, self).__init__()
 141
 142         self.config = config
 143         self.check_qt_version()
 144         self.expert = expert
 145         self.interface = interface
 146         self.blockchain = blockchain
 147
 148
 149
 150
 151     def check_qt_version(self):
 152         qtVersion = qVersion()
 153         if not(int(qtVersion[0]) >= 4 and int(qtVersion[2]) >= 7):
 154             app = QApplication(sys.argv)
 155             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")
 156             self.config.set_key('gui','classic',True)
 157             sys.exit(0)
 158
 159
 160     def main(self, url):
 161
 162         if self.expert is None:
 163             self.app = QApplication(sys.argv)
 164             storage = WalletStorage(self.config)
 165             if not storage.file_exists:
 166                 exit()
 167             self.wallet = Wallet(storage)
 168             self.wallet.start_threads(self.interface, self.blockchain)
 169         else:
 170             self.app = self.expert.app
 171             self.wallet = self.expert.wallet
 172
 173         actuator = MiniActuator(self.config, self.wallet)
 174         # Should probably not modify the current path but instead
 175         # change the behaviour of rsrc(...)
 176         old_path = QDir.currentPath()
 177         actuator.load_theme()
 178
 179         self.mini = MiniWindow(actuator, self.expand, self.config)
 180         driver = MiniDriver(self.wallet, self.mini)
 181
 182         # Reset path back to original value now that loading the GUI
 183         # is completed.
 184         QDir.setCurrent(old_path)
 185
 186         if url:
 187             self.set_url(url)
 188
 189         if self.expert is None:
 190             self.expert = ElectrumWindow(self.config)
 191             self.expert.load_wallet(self.wallet)
 192             self.expert.app = self.app
 193             timer = Timer()
 194             timer.start()
 195             self.expert.connect_slots(timer)
 196             self.expert.update_wallet()
 197
 198             self.app.exec_()
 199
 200
 201     def expand(self):
 202         """Hide the lite mode window and show pro-mode."""
 203         self.config.set_key('gui', 'classic', True)
 204         self.mini.hide()
 205         self.expert.show()
 206
 207     def set_url(self, url):
 208         payto, amount, label, message, signature, identity, url = \
 209             self.wallet.parse_url(url, self.show_message, self.show_question)
 210         self.mini.set_payment_fields(payto, amount)
 211
 212     def show_message(self, message):
 213         QMessageBox.information(self.mini, _("Message"), message, _("OK"))
 214
 215     def show_question(self, message):
 216         choice = QMessageBox.question(self.mini, _("Message"), message,
 217                                       QMessageBox.Yes|QMessageBox.No,
 218                                       QMessageBox.No)
 219         return choice == QMessageBox.Yes
 220
 221     def restore_or_create(self):
 222         qt_gui_object = ElectrumGui(self.wallet, self.app)
 223         return qt_gui_object.restore_or_create()
 224
 225 class TransactionWindow(QDialog):
 226
 227     def set_label(self):
 228         label = unicode(self.label_edit.text())
 229         self.parent.wallet.labels[self.tx_id] = label
 230
 231         super(TransactionWindow, self).accept()
 232
 233     def __init__(self, transaction_id, parent):
 234         super(TransactionWindow, self).__init__()
 235
 236         self.tx_id = str(transaction_id)
 237         self.parent = parent
 238
 239         self.setModal(True)
 240         self.resize(200,100)
 241         self.setWindowTitle(_("Transaction successfully sent"))
 242
 243         self.layout = QGridLayout(self)
 244         history_label = "%s\n%s" % (_("Your transaction has been sent."), _("Please enter a label for this transaction for future reference."))
 245         self.layout.addWidget(QLabel(history_label))
 246
 247         self.label_edit = QLineEdit()
 248         self.label_edit.setPlaceholderText(_("Transaction label"))
 249         self.label_edit.setObjectName("label_input")
 250         self.label_edit.setAttribute(Qt.WA_MacShowFocusRect, 0)
 251         self.label_edit.setFocusPolicy(Qt.ClickFocus)
 252         self.layout.addWidget(self.label_edit)
 253
 254         self.save_button = QPushButton(_("Save"))
 255         self.layout.addWidget(self.save_button)
 256         self.save_button.clicked.connect(self.set_label)
 257
 258         self.exec_()
 259
 260 class MiniWindow(QDialog):
 261
 262     def __init__(self, actuator, expand_callback, config):
 263         super(MiniWindow, self).__init__()
 264         tx = "e08115d0f7819aee65b9d24f81ef9d46eb62bb67ddef5318156cbc3ceb7b703e"
 265
 266         self.actuator = actuator
 267         self.config = config
 268         self.btc_balance = None
 269         self.quote_currencies = ["BRL", "CNY", "EUR", "GBP", "RUB", "USD"]
 270         self.actuator.set_configured_currency(self.set_quote_currency)
 271         self.exchanger = exchange_rate.Exchanger(self)
 272         # Needed because price discovery is done in a different thread
 273         # which needs to be sent back to this main one to update the GUI
 274         self.connect(self, SIGNAL("refresh_balance()"), self.refresh_balance)
 275
 276         self.balance_label = BalanceLabel(self.change_quote_currency)
 277         self.balance_label.setObjectName("balance_label")
 278
 279
 280         # Bitcoin address code
 281         self.address_input = QLineEdit()
 282         self.address_input.setPlaceholderText(_("Enter a Bitcoin address or contact"))
 283         self.address_input.setObjectName("address_input")
 284
 285         self.address_input.setFocusPolicy(Qt.ClickFocus)
 286
 287         self.address_input.textChanged.connect(self.address_field_changed)
 288         resize_line_edit_width(self.address_input,
 289                                "1BtaFUr3qVvAmwrsuDuu5zk6e4s2rxd2Gy")
 290
 291         self.address_completions = QStringListModel()
 292         address_completer = QCompleter(self.address_input)
 293         address_completer.setCaseSensitivity(False)
 294         address_completer.setModel(self.address_completions)
 295         self.address_input.setCompleter(address_completer)
 296
 297         address_layout = QHBoxLayout()
 298         address_layout.addWidget(self.address_input)
 299
 300         self.amount_input = QLineEdit()
 301         self.amount_input.setPlaceholderText(_("... and amount"))
 302         self.amount_input.setObjectName("amount_input")
 303
 304         self.amount_input.setFocusPolicy(Qt.ClickFocus)
 305         # This is changed according to the user's displayed balance
 306         self.amount_validator = QDoubleValidator(self.amount_input)
 307         self.amount_validator.setNotation(QDoubleValidator.StandardNotation)
 308         self.amount_validator.setDecimals(8)
 309         self.amount_input.setValidator(self.amount_validator)
 310
 311         # This removes the very ugly OSX highlighting, please leave this in :D
 312         self.address_input.setAttribute(Qt.WA_MacShowFocusRect, 0)
 313         self.amount_input.setAttribute(Qt.WA_MacShowFocusRect, 0)
 314         self.amount_input.textChanged.connect(self.amount_input_changed)
 315
 316         if self.actuator.wallet.seed:
 317             self.send_button = QPushButton(_("&Send"))
 318         else:
 319             self.send_button = QPushButton(_("&Create"))
 320
 321         self.send_button.setObjectName("send_button")
 322         self.send_button.setDisabled(True);
 323         self.send_button.clicked.connect(self.send)
 324
 325         # Creating the receive button
 326         self.switch_button = QPushButton( QIcon(":icons/switchgui.png"),'' )
 327         self.switch_button.setMaximumWidth(25)
 328         self.switch_button.setFlat(True)
 329         self.switch_button.clicked.connect(expand_callback)
 330
 331         main_layout = QGridLayout(self)
 332
 333         main_layout.addWidget(self.balance_label, 0, 0, 1, 3)
 334         main_layout.addWidget(self.switch_button, 0, 3)
 335
 336         main_layout.addWidget(self.address_input, 1, 0, 1, 4)
 337         main_layout.addWidget(self.amount_input, 2, 0, 1, 2)
 338         main_layout.addWidget(self.send_button, 2, 2, 1, 2)
 339
 340         self.send_button.setMaximumWidth(125)
 341
 342         self.history_list = history_widget.HistoryWidget()
 343         self.history_list.setObjectName("history")
 344         self.history_list.hide()
 345         self.history_list.setAlternatingRowColors(True)
 346
 347         main_layout.addWidget(self.history_list, 3, 0, 1, 4)
 348
 349         self.receiving = receiving_widget.ReceivingWidget(self)
 350         self.receiving.setObjectName("receiving")
 351
 352         # Add to the right side
 353         self.receiving_box = QGroupBox(_("Select a receiving address"))
 354         extra_layout = QGridLayout()
 355
 356         # Checkbox to filter used addresses
 357         hide_used = QCheckBox(_('Hide used addresses'))
 358         hide_used.setChecked(True)
 359         hide_used.stateChanged.connect(self.receiving.toggle_used)
 360
 361         # Events for receiving addresses
 362         self.receiving.clicked.connect(self.receiving.copy_address)
 363         self.receiving.itemDoubleClicked.connect(self.receiving.edit_label)
 364         self.receiving.itemChanged.connect(self.receiving.update_label)
 365
 366
 367         # Label
 368         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)
 369
 370         extra_layout.addWidget(self.receiving, 1,0)
 371         extra_layout.addWidget(hide_used, 2,0)
 372         extra_layout.setColumnMinimumWidth(0,200)
 373
 374         self.receiving_box.setLayout(extra_layout)
 375         main_layout.addWidget(self.receiving_box,0,4,-1,3)
 376         self.receiving_box.hide()
 377
 378         # Creating the menu bar
 379         menubar = QMenuBar()
 380         electrum_menu = menubar.addMenu(_("&Electrum"))
 381
 382         quit_option = electrum_menu.addAction(_("&Close"))
 383
 384         quit_option.triggered.connect(self.close)
 385
 386         view_menu = menubar.addMenu(_("&View"))
 387         extra_menu = menubar.addMenu(_("&Extra"))
 388
 389         backup_wallet_menu = extra_menu.addAction( _("&Create wallet backup"))
 390         backup_wallet_menu.triggered.connect(lambda: backup_wallet(self.config.path))
 391
 392         export_csv = extra_menu.addAction( _("&Export transactions to CSV") )
 393         export_csv.triggered.connect(lambda: csv_transaction(self.actuator.wallet))
 394
 395         master_key = extra_menu.addAction( _("Copy master public key to clipboard") )
 396         master_key.triggered.connect(self.actuator.copy_master_public_key)
 397
 398         expert_gui = view_menu.addAction(_("&Classic GUI"))
 399         expert_gui.triggered.connect(expand_callback)
 400         themes_menu = view_menu.addMenu(_("&Themes"))
 401         selected_theme = self.actuator.selected_theme()
 402         theme_group = QActionGroup(self)
 403         for theme_name in self.actuator.theme_names():
 404             theme_action = themes_menu.addAction(theme_name)
 405             theme_action.setCheckable(True)
 406             if selected_theme == theme_name:
 407                 theme_action.setChecked(True)
 408             class SelectThemeFunctor:
 409                 def __init__(self, theme_name, toggle_theme):
 410                     self.theme_name = theme_name
 411                     self.toggle_theme = toggle_theme
 412                 def __call__(self, checked):
 413                     if checked:
 414                         self.toggle_theme(self.theme_name)
 415             delegate = SelectThemeFunctor(theme_name, self.toggle_theme)
 416             theme_action.toggled.connect(delegate)
 417             theme_group.addAction(theme_action)
 418         view_menu.addSeparator()
 419
 420         show_receiving = view_menu.addAction(_("Show Receiving addresses"))
 421         show_receiving.setCheckable(True)
 422         show_receiving.toggled.connect(self.toggle_receiving_layout)
 423
 424         show_receiving_toggle = self.config.get("gui_show_receiving",False)
 425         show_receiving.setChecked(show_receiving_toggle)
 426         self.show_receiving = show_receiving
 427
 428         self.toggle_receiving_layout(show_receiving_toggle)
 429
 430
 431         show_history = view_menu.addAction(_("Show History"))
 432         show_history.setCheckable(True)
 433         show_history.toggled.connect(self.show_history)
 434
 435         help_menu = menubar.addMenu(_("&Help"))
 436         the_website = help_menu.addAction(_("&Website"))
 437         the_website.triggered.connect(self.the_website)
 438         help_menu.addSeparator()
 439         report_bug = help_menu.addAction(_("&Report Bug"))
 440         report_bug.triggered.connect(self.show_report_bug)
 441         show_about = help_menu.addAction(_("&About"))
 442         show_about.triggered.connect(self.show_about)
 443         main_layout.setMenuBar(menubar)
 444         self.main_layout = main_layout
 445
 446         quit_shortcut = QShortcut(QKeySequence("Ctrl+Q"), self)
 447         quit_shortcut.activated.connect(self.close)
 448         close_shortcut = QShortcut(QKeySequence("Ctrl+W"), self)
 449         close_shortcut.activated.connect(self.close)
 450
 451         g = self.config.get("winpos-lite",[4, 25, 351, 149])
 452         self.setGeometry(g[0], g[1], g[2], g[3])
 453
 454         show_hist = self.config.get("gui_show_history",False)
 455         show_history.setChecked(show_hist)
 456         self.show_history(show_hist)
 457
 458         self.setWindowIcon(QIcon(":icons/electrum.png"))
 459         self.setWindowTitle("Electrum")
 460         self.setWindowFlags(Qt.Window|Qt.MSWindowsFixedSizeDialogHint)
 461         self.layout().setSizeConstraint(QLayout.SetFixedSize)
 462         self.setObjectName("main_window")
 463         self.show()
 464
 465
 466     def toggle_theme(self, theme_name):
 467         old_path = QDir.currentPath()
 468         self.actuator.change_theme(theme_name)
 469         # Recompute style globally
 470         qApp.style().unpolish(self)
 471         qApp.style().polish(self)
 472         QDir.setCurrent(old_path)
 473
 474     def closeEvent(self, event):
 475         g = self.geometry()
 476         self.config.set_key("winpos-lite", [g.left(),g.top(),g.width(),g.height()],True)
 477         self.config.set_key("gui_show_history", self.history_list.isVisible(),True)
 478         self.config.set_key("gui_show_receiving", self.receiving_box.isVisible(),True)
 479
 480         super(MiniWindow, self).closeEvent(event)
 481         qApp.quit()
 482
 483     def set_payment_fields(self, dest_address, amount):
 484         self.address_input.setText(dest_address)
 485         self.address_field_changed(dest_address)
 486         self.amount_input.setText(amount)
 487
 488     def activate(self):
 489         pass
 490
 491     def deactivate(self):
 492         pass
 493
 494     def set_quote_currency(self, currency):
 495         """Set and display the fiat currency country."""
 496         if currency not in self.quote_currencies:
 497             return
 498         self.quote_currencies.remove(currency)
 499         self.quote_currencies.insert(0, currency)
 500         self.refresh_balance()
 501
 502     def change_quote_currency(self, forward=True):
 503         if forward:
 504             self.quote_currencies = \
 505                 self.quote_currencies[1:] + self.quote_currencies[0:1]
 506         else:
 507             self.quote_currencies = \
 508                 self.quote_currencies[-1:] + self.quote_currencies[0:-1]
 509         self.actuator.set_config_currency(self.quote_currencies[0])
 510         self.refresh_balance()
 511
 512     def refresh_balance(self):
 513         if self.btc_balance is None:
 514             # Price has been discovered before wallet has been loaded
 515             # and server connect... so bail.
 516             return
 517         self.set_balances(self.btc_balance)
 518         self.amount_input_changed(self.amount_input.text())
 519
 520     def set_balances(self, btc_balance):
 521         """Set the bitcoin balance and update the amount label accordingly."""
 522         self.btc_balance = btc_balance
 523         quote_text = self.create_quote_text(btc_balance)
 524         if quote_text:
 525             quote_text = "(%s)" % quote_text
 526         btc_balance = "%.4f" % (btc_balance / bitcoin(1))
 527         self.balance_label.set_balance_text(btc_balance, quote_text)
 528         self.setWindowTitle("Electrum %s - %s BTC" % (electrum_version, btc_balance))
 529
 530     def amount_input_changed(self, amount_text):
 531         """Update the number of bitcoins displayed."""
 532         self.check_button_status()
 533
 534         try:
 535             amount = D(str(amount_text))
 536         except decimal.InvalidOperation:
 537             self.balance_label.show_balance()
 538         else:
 539             quote_text = self.create_quote_text(amount * bitcoin(1))
 540             if quote_text:
 541                 self.balance_label.set_amount_text(quote_text)
 542                 self.balance_label.show_amount()
 543             else:
 544                 self.balance_label.show_balance()
 545
 546     def create_quote_text(self, btc_balance):
 547         """Return a string copy of the amount fiat currency the
 548         user has in bitcoins."""
 549         quote_currency = self.quote_currencies[0]
 550         quote_balance = self.exchanger.exchange(btc_balance, quote_currency)
 551         if quote_balance is None:
 552             quote_text = ""
 553         else:
 554             quote_text = "%.2f %s" % ((quote_balance / bitcoin(1)),
 555                                       quote_currency)
 556         return quote_text
 557
 558     def send(self):
 559         if self.actuator.send(self.address_input.text(),
 560                               self.amount_input.text(), self):
 561             self.address_input.setText("")
 562             self.amount_input.setText("")
 563
 564     def check_button_status(self):
 565         """Check that the bitcoin address is valid and that something
 566         is entered in the amount before making the send button clickable."""
 567         try:
 568             value = D(str(self.amount_input.text())) * 10**8
 569         except decimal.InvalidOperation:
 570             value = None
 571         # self.address_input.property(...) returns a qVariant, not a bool.
 572         # The == is needed to properly invoke a comparison.
 573         if (self.address_input.property("isValid") == True and
 574             value is not None and 0 < value <= self.btc_balance):
 575             self.send_button.setDisabled(False)
 576         else:
 577             self.send_button.setDisabled(True)
 578
 579     def address_field_changed(self, address):
 580         # label or alias, with address in brackets
 581         match2 = re.match("(.*?)\s*\<([1-9A-HJ-NP-Za-km-z]{26,})\>",
 582                           address)
 583         if match2:
 584           address = match2.group(2)
 585           self.address_input.setText(address)
 586
 587         if is_valid(address):
 588             self.check_button_status()
 589             self.address_input.setProperty("isValid", True)
 590             self.recompute_style(self.address_input)
 591         else:
 592             self.send_button.setDisabled(True)
 593             self.address_input.setProperty("isValid", False)
 594             self.recompute_style(self.address_input)
 595
 596         if len(address) == 0:
 597             self.address_input.setProperty("isValid", None)
 598             self.recompute_style(self.address_input)
 599
 600     def recompute_style(self, element):
 601         self.style().unpolish(element)
 602         self.style().polish(element)
 603
 604     def copy_address(self):
 605         receive_popup = ReceivePopup(self.receive_button)
 606         self.actuator.copy_address(receive_popup)
 607
 608     def update_completions(self, completions):
 609         self.address_completions.setStringList(completions)
 610
 611
 612     def update_history(self, tx_history):
 613
 614         self.history_list.empty()
 615
 616         for item in tx_history[-10:]:
 617             tx_hash, conf, is_mine, value, fee, balance, timestamp = item
 618             label = self.actuator.wallet.get_label(tx_hash)[0]
 619             #amount = D(value) / 10**8
 620             v_str = format_satoshis(value, True)
 621             self.history_list.append(label, v_str, age(timestamp))
 622
 623     def acceptbit(self):
 624         self.actuator.acceptbit(self.quote_currencies[0])
 625
 626     def the_website(self):
 627         webbrowser.open("http://electrum.org")
 628
 629     def show_about(self):
 630         QMessageBox.about(self, "Electrum",
 631             _("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."))
 632
 633     def show_report_bug(self):
 634         QMessageBox.information(self, "Electrum - " + _("Reporting Bugs"),
 635             _("Please report any bugs as issues on github:")+" <a href=\"https://github.com/spesmilo/electrum/issues\">https://github.com/spesmilo/electrum/issues</a>")
 636
 637     def toggle_receiving_layout(self, toggle_state):
 638         if toggle_state:
 639           self.receiving_box.show()
 640         else:
 641           self.receiving_box.hide()
 642
 643     def show_history(self, toggle_state):
 644         if toggle_state:
 645             self.main_layout.setRowMinimumHeight(3,200)
 646             self.history_list.show()
 647         else:
 648             self.main_layout.setRowMinimumHeight(3,0)
 649             self.history_list.hide()
 650
 651 class BalanceLabel(QLabel):
 652
 653     SHOW_CONNECTING = 1
 654     SHOW_BALANCE = 2
 655     SHOW_AMOUNT = 3
 656
 657     def __init__(self, change_quote_currency, parent=None):
 658         super(QLabel, self).__init__(_("Connecting..."), parent)
 659         self.change_quote_currency = change_quote_currency
 660         self.state = self.SHOW_CONNECTING
 661         self.balance_text = ""
 662         self.amount_text = ""
 663
 664     def mousePressEvent(self, event):
 665         """Change the fiat currency selection if window background is clicked."""
 666         if self.state != self.SHOW_CONNECTING:
 667             self.change_quote_currency(event.button() == Qt.LeftButton)
 668
 669     def set_balance_text(self, btc_balance, quote_text):
 670         """Set the amount of bitcoins in the gui."""
 671         if self.state == self.SHOW_CONNECTING:
 672             self.state = self.SHOW_BALANCE
 673         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)
 674         if self.state == self.SHOW_BALANCE:
 675             self.setText(self.balance_text)
 676
 677     def set_amount_text(self, quote_text):
 678         self.amount_text = "<span style='font-size: 10pt'>%s</span>" % quote_text
 679         if self.state == self.SHOW_AMOUNT:
 680             self.setText(self.amount_text)
 681
 682     def show_balance(self):
 683         if self.state == self.SHOW_AMOUNT:
 684             self.state = self.SHOW_BALANCE
 685             self.setText(self.balance_text)
 686
 687     def show_amount(self):
 688         if self.state == self.SHOW_BALANCE:
 689             self.state = self.SHOW_AMOUNT
 690             self.setText(self.amount_text)
 691
 692 def ok_cancel_buttons(dialog):
 693     row_layout = QHBoxLayout()
 694     row_layout.addStretch(1)
 695     ok_button = QPushButton(_("OK"))
 696     row_layout.addWidget(ok_button)
 697     ok_button.clicked.connect(dialog.accept)
 698     cancel_button = QPushButton(_("Cancel"))
 699     row_layout.addWidget(cancel_button)
 700     cancel_button.clicked.connect(dialog.reject)
 701     return row_layout
 702
 703 class PasswordDialog(QDialog):
 704
 705     def __init__(self, parent):
 706         super(QDialog, self).__init__(parent)
 707
 708         self.setModal(True)
 709
 710         self.password_input = QLineEdit()
 711         self.password_input.setEchoMode(QLineEdit.Password)
 712
 713         main_layout = QVBoxLayout(self)
 714         message = _('Please enter your password')
 715         main_layout.addWidget(QLabel(message))
 716
 717         grid = QGridLayout()
 718         grid.setSpacing(8)
 719         grid.addWidget(QLabel(_('Password')), 1, 0)
 720         grid.addWidget(self.password_input, 1, 1)
 721         main_layout.addLayout(grid)
 722
 723         main_layout.addLayout(ok_cancel_buttons(self))
 724         self.setLayout(main_layout)
 725
 726     def run(self):
 727         if not self.exec_():
 728             return
 729         return unicode(self.password_input.text())
 730
 731 class ReceivePopup(QDialog):
 732
 733     def leaveEvent(self, event):
 734         self.close()
 735
 736     def setup(self, address):
 737         label = QLabel(_("Copied your Bitcoin address to the clipboard!"))
 738         address_display = QLineEdit(address)
 739         address_display.setReadOnly(True)
 740         resize_line_edit_width(address_display, address)
 741
 742         main_layout = QVBoxLayout(self)
 743         main_layout.addWidget(label)
 744         main_layout.addWidget(address_display)
 745
 746         self.setMouseTracking(True)
 747         self.setWindowTitle("Electrum - " + _("Receive Bitcoin payment"))
 748         self.setWindowFlags(Qt.Window|Qt.FramelessWindowHint|
 749                             Qt.MSWindowsFixedSizeDialogHint)
 750         self.layout().setSizeConstraint(QLayout.SetFixedSize)
 751         #self.setFrameStyle(QFrame.WinPanel|QFrame.Raised)
 752         #self.setAlignment(Qt.AlignCenter)
 753
 754     def popup(self):
 755         parent = self.parent()
 756         top_left_pos = parent.mapToGlobal(parent.rect().bottomLeft())
 757         self.move(top_left_pos)
 758         center_mouse_pos = self.mapToGlobal(self.rect().center())
 759         QCursor.setPos(center_mouse_pos)
 760         self.show()
 761
 762 class MiniActuator:
 763     """Initialize the definitions relating to themes and
 764     sending/receiving bitcoins."""
 765
 766
 767     def __init__(self, config, wallet):
 768         """Retrieve the gui theme used in previous session."""
 769         self.config = config
 770         self.wallet = wallet
 771         self.theme_name = self.config.get('litegui_theme','Cleanlook')
 772         self.themes = load_theme_paths()
 773
 774     def load_theme(self):
 775         """Load theme retrieved from wallet file."""
 776         try:
 777             theme_prefix, theme_path = self.themes[self.theme_name]
 778         except KeyError:
 779             util.print_error("Theme not found!", self.theme_name)
 780             return
 781         QDir.setCurrent(os.path.join(theme_prefix, theme_path))
 782         with open(rsrc("style.css")) as style_file:
 783             qApp.setStyleSheet(style_file.read())
 784
 785     def theme_names(self):
 786         """Sort themes."""
 787         return sorted(self.themes.keys())
 788
 789     def selected_theme(self):
 790         """Select theme."""
 791         return self.theme_name
 792
 793     def change_theme(self, theme_name):
 794         """Change theme."""
 795         self.theme_name = theme_name
 796         self.config.set_key('litegui_theme',theme_name)
 797         self.load_theme()
 798
 799     def set_configured_currency(self, set_quote_currency):
 800         """Set the inital fiat currency conversion country (USD/EUR/GBP) in
 801         the GUI to what it was set to in the wallet."""
 802         currency = self.config.get('currency')
 803         # currency can be none when Electrum is used for the first
 804         # time and no setting has been created yet.
 805         if currency is not None:
 806             set_quote_currency(currency)
 807
 808     def set_config_currency(self, conversion_currency):
 809         """Change the wallet fiat currency country."""
 810         self.config.set_key('conversion_currency',conversion_currency,True)
 811
 812     def copy_address(self, receive_popup):
 813         """Copy the wallet addresses into the client."""
 814         addrs = [addr for addr in self.wallet.addresses(True)
 815                  if not self.wallet.is_change(addr)]
 816         # Select most recent addresses from gap limit
 817         addrs = addrs[-self.wallet.gap_limit:]
 818         copied_address = random.choice(addrs)
 819         qApp.clipboard().setText(copied_address)
 820         receive_popup.setup(copied_address)
 821         receive_popup.popup()
 822
 823     def waiting_dialog(self, f):
 824         s = Timer()
 825         s.start()
 826         w = QDialog()
 827         w.resize(200, 70)
 828         w.setWindowTitle('Electrum')
 829         l = QLabel('Sending transaction, please wait.')
 830         vbox = QVBoxLayout()
 831         vbox.addWidget(l)
 832         w.setLayout(vbox)
 833         w.show()
 834         def ff():
 835             s = f()
 836             if s: l.setText(s)
 837             else: w.close()
 838         w.connect(s, QtCore.SIGNAL('timersignal'), ff)
 839         w.exec_()
 840         w.destroy()
 841
 842
 843     def send(self, address, amount, parent_window):
 844         """Send bitcoins to the target address."""
 845         dest_address = self.fetch_destination(address)
 846
 847         if dest_address is None or not is_valid(dest_address):
 848             QMessageBox.warning(parent_window, _('Error'),
 849                 _('Invalid Bitcoin Address') + ':\n' + address, _('OK'))
 850             return False
 851
 852         convert_amount = lambda amount: \
 853             int(D(unicode(amount)) * bitcoin(1))
 854         amount = convert_amount(amount)
 855
 856         if self.wallet.use_encryption:
 857             password_dialog = PasswordDialog(parent_window)
 858             password = password_dialog.run()
 859             if not password:
 860                 return
 861         else:
 862             password = None
 863
 864         fee = 0
 865         # 0.1 BTC = 10000000
 866         if amount < bitcoin(1) / 10:
 867             # 0.001 BTC
 868             fee = bitcoin(1) / 1000
 869
 870         try:
 871             tx = self.wallet.mktx([(dest_address, amount)], password, fee)
 872         except BaseException as error:
 873             QMessageBox.warning(parent_window, _('Error'), str(error), _('OK'))
 874             return False
 875
 876         if tx.is_complete:
 877             h = self.wallet.send_tx(tx)
 878
 879             self.waiting_dialog(lambda: False if self.wallet.tx_event.isSet() else _("Sending transaction, please wait..."))
 880
 881             status, message = self.wallet.receive_tx(h)
 882
 883             if not status:
 884                 import tempfile
 885                 dumpf = tempfile.NamedTemporaryFile(delete=False)
 886                 dumpf.write(tx)
 887                 dumpf.close()
 888                 print "Dumped error tx to", dumpf.name
 889                 QMessageBox.warning(parent_window, _('Error'), message, _('OK'))
 890                 return False
 891
 892             TransactionWindow(message, self)
 893         else:
 894             filename = 'unsigned_tx_%s' % (time.mktime(time.gmtime()))
 895             try:
 896                 fileName = QFileDialog.getSaveFileName(QWidget(), _("Select a transaction filename"), os.path.expanduser('~/%s' % (filename)))
 897                 with open(fileName,'w') as f:
 898                     f.write(json.dumps(tx.as_dict(),indent=4) + '\n')
 899                 QMessageBox.information(QWidget(), _('Unsigned transaction created'), _("Unsigned transaction was saved to file:") + " " +fileName, _('OK'))
 900             except BaseException as e:
 901                 QMessageBox.warning(QWidget(), _('Error'), _('Could not write transaction to file: %s' % e), _('OK'))
 902         return True
 903
 904     def fetch_destination(self, address):
 905         recipient = unicode(address).strip()
 906
 907         # alias
 908         match1 = re.match("^(|([\w\-\.]+)@)((\w[\w\-]+\.)+[\w\-]+)$",
 909                           recipient)
 910
 911         # label or alias, with address in brackets
 912         match2 = re.match("(.*?)\s*\<([1-9A-HJ-NP-Za-km-z]{26,})\>",
 913                           recipient)
 914
 915         if match1:
 916             dest_address = \
 917                 self.wallet.get_alias(recipient, True,
 918                                       self.show_message, self.question)
 919             return dest_address
 920         elif match2:
 921             return match2.group(2)
 922         else:
 923             return recipient
 924
 925
 926     def copy_master_public_key(self):
 927         master_pubkey = self.wallet.get_master_public_key()
 928         qApp.clipboard().setText(master_pubkey)
 929         QMessageBox.information(None, _("Copy successful"), _("Your master public key has been copied to your clipboard."))
 930
 931
 932     def acceptbit(self, currency):
 933         master_pubkey = self.wallet.master_public_key
 934         url = "http://acceptbit.com/mpk/%s/%s" % (master_pubkey, currency)
 935         webbrowser.open(url)
 936
 937     def show_seed_dialog(self):
 938         ElectrumWindow.show_seed_dialog(self.wallet)
 939
 940 class MiniDriver(QObject):
 941
 942     INITIALIZING = 0
 943     CONNECTING = 1
 944     SYNCHRONIZING = 2
 945     READY = 3
 946
 947     def __init__(self, wallet, window):
 948         super(QObject, self).__init__()
 949
 950         self.wallet = wallet
 951         self.window = window
 952
 953         self.wallet.network.register_callback('updated',self.update_callback)
 954         self.wallet.network.register_callback('connected', self.update_callback)
 955         self.wallet.network.register_callback('disconnected', self.update_callback)
 956
 957         self.state = None
 958
 959         self.initializing()
 960         self.connect(self, SIGNAL("updatesignal()"), self.update)
 961         self.update_callback()
 962
 963     # This is a hack to workaround that Qt does not like changing the
 964     # window properties from this other thread before the runloop has
 965     # been called from.
 966     def update_callback(self):
 967         self.emit(SIGNAL("updatesignal()"))
 968
 969     def update(self):
 970         if not self.wallet.interface:
 971             self.initializing()
 972         elif not self.wallet.interface.is_connected:
 973             self.connecting()
 974         elif not self.wallet.up_to_date:
 975             self.synchronizing()
 976         else:
 977             self.ready()
 978
 979         if self.wallet.up_to_date:
 980             self.update_balance()
 981             self.update_completions()
 982             self.update_history()
 983
 984     def initializing(self):
 985         if self.state == self.INITIALIZING:
 986             return
 987         self.state = self.INITIALIZING
 988         self.window.deactivate()
 989
 990     def connecting(self):
 991         if self.state == self.CONNECTING:
 992             return
 993         self.state = self.CONNECTING
 994         self.window.deactivate()
 995
 996     def synchronizing(self):
 997         if self.state == self.SYNCHRONIZING:
 998             return
 999         self.state = self.SYNCHRONIZING
1000         self.window.deactivate()
1001
1002     def ready(self):
1003         if self.state == self.READY:
1004             return
1005         self.state = self.READY
1006         self.window.activate()
1007
1008     def update_balance(self):
1009         conf_balance, unconf_balance = self.wallet.get_balance()
1010         balance = D(conf_balance + unconf_balance)
1011         self.window.set_balances(balance)
1012
1013     def update_completions(self):
1014         completions = []
1015         for addr, label in self.wallet.labels.items():
1016             if addr in self.wallet.addressbook:
1017                 completions.append("%s <%s>" % (label, addr))
1018         self.window.update_completions(completions)
1019
1020     def update_history(self):
1021         tx_history = self.wallet.get_tx_history()
1022         self.window.update_history(tx_history)
1023
1024
1025 if __name__ == "__main__":
1026     app = QApplication(sys.argv)
1027     with open(rsrc("style.css")) as style_file:
1028         app.setStyleSheet(style_file.read())
1029     mini = MiniWindow()
1030     sys.exit(app.exec_())
1031