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