lib/gui_lite.py

   1 import sys
   2
   3 # Let's do some dep checking and handle missing ones gracefully
   4 try:
   5     from PyQt4.QtCore import *
   6     from PyQt4.QtGui import *
   7     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
  15
  16
  17 from decimal import Decimal as D
  18 from util import get_resource_path as rsrc
  19 from i18n import _
  20 import decimal
  21 import exchange_rate
  22 import os.path
  23 import random
  24 import re
  25 import time
  26 import wallet
  27 import webbrowser
  28 import history_widget
  29 import receiving_widget
  30 import util
  31 import csv
  32 import datetime
  33
  34 from version import ELECTRUM_VERSION as electrum_version
  35 from wallet import format_satoshis
  36 import gui_qt
  37 import shutil
  38
  39 bitcoin = lambda v: v * 100000000
  40
  41 def IconButton(filename, parent=None):
  42     pixmap = QPixmap(filename)
  43     icon = QIcon(pixmap)
  44     return QPushButton(icon, "", parent)
  45
  46 class Timer(QThread):
  47     def run(self):
  48         while True:
  49             self.emit(SIGNAL('timersignal'))
  50             time.sleep(0.5)
  51
  52 def resize_line_edit_width(line_edit, text_input):
  53     metrics = QFontMetrics(qApp.font())
  54     # Create an extra character to add some space on the end
  55     text_input += "A"
  56     line_edit.setMinimumWidth(metrics.width(text_input))
  57
  58 def load_theme_name(theme_path):
  59     try:
  60         with open(os.path.join(theme_path, "name.cfg")) as name_cfg_file:
  61             return name_cfg_file.read().rstrip("\n").strip()
  62     except IOError:
  63         return None
  64
  65
  66 def theme_dirs_from_prefix(prefix):
  67     if not os.path.exists(prefix):
  68         return []
  69     theme_paths = {}
  70     for potential_theme in os.listdir(prefix):
  71         theme_full_path = os.path.join(prefix, potential_theme)
  72         theme_css = os.path.join(theme_full_path, "style.css")
  73         if not os.path.exists(theme_css):
  74             continue
  75         theme_name = load_theme_name(theme_full_path)
  76         if theme_name is None:
  77             continue
  78         theme_paths[theme_name] = prefix, potential_theme
  79     return theme_paths
  80
  81 def load_theme_paths():
  82     theme_paths = {}
  83     prefixes = (util.local_data_dir(), util.appdata_dir())
  84     for prefix in prefixes:
  85         theme_paths.update(theme_dirs_from_prefix(prefix))
  86     return theme_paths
  87
  88
  89 class ElectrumGui(QObject):
  90
  91     def __init__(self, wallet, config):
  92         super(QObject, self).__init__()
  93
  94         self.wallet = wallet
  95         self.config = config
  96         self.check_qt_version()
  97         self.app = QApplication(sys.argv)
  98
  99
 100     def check_qt_version(self):
 101         qtVersion = qVersion()
 102         if not(int(qtVersion[0]) >= 4 and int(qtVersion[2]) >= 7):
 103             app = QApplication(sys.argv)
 104             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")
 105             self.config.set_key('gui','classic',True)
 106             sys.exit(0)
 107
 108
 109     def main(self, url):
 110         actuator = MiniActuator(self.wallet)
 111         # Should probably not modify the current path but instead
 112         # change the behaviour of rsrc(...)
 113         old_path = QDir.currentPath()
 114         actuator.load_theme()
 115
 116         self.mini = MiniWindow(actuator, self.expand, self.config)
 117         driver = MiniDriver(self.wallet, self.mini)
 118
 119         # Reset path back to original value now that loading the GUI
 120         # is completed.
 121         QDir.setCurrent(old_path)
 122
 123         if url:
 124             self.set_url(url)
 125
 126         timer = Timer()
 127         timer.start()
 128         self.expert = gui_qt.ElectrumWindow(self.wallet, self.config)
 129         self.expert.app = self.app
 130         self.expert.connect_slots(timer)
 131         self.expert.update_wallet()
 132         self.app.exec_()
 133
 134     def expand(self):
 135         """Hide the lite mode window and show pro-mode."""
 136         self.mini.hide()
 137         self.expert.show()
 138
 139     def set_url(self, url):
 140         payto, amount, label, message, signature, identity, url = \
 141             self.wallet.parse_url(url, self.show_message, self.show_question)
 142         self.mini.set_payment_fields(payto, amount)
 143
 144     def show_message(self, message):
 145         QMessageBox.information(self.mini, _("Message"), message, _("OK"))
 146
 147     def show_question(self, message):
 148         choice = QMessageBox.question(self.mini, _("Message"), message,
 149                                       QMessageBox.Yes|QMessageBox.No,
 150                                       QMessageBox.No)
 151         return choice == QMessageBox.Yes
 152
 153     def restore_or_create(self):
 154         qt_gui_object = gui_qt.ElectrumGui(self.wallet, self.app)
 155         return qt_gui_object.restore_or_create()
 156
 157 class TransactionWindow(QDialog):
 158
 159     def set_label(self):
 160         label = unicode(self.label_edit.text())
 161         self.parent.wallet.labels[self.tx_id] = label
 162
 163         super(TransactionWindow, self).accept()
 164
 165     def __init__(self, transaction_id, parent):
 166         super(TransactionWindow, self).__init__()
 167
 168         self.tx_id = str(transaction_id)
 169         self.parent = parent
 170
 171         self.setModal(True)
 172         self.resize(200,100)
 173         self.setWindowTitle("Transaction successfully sent")
 174
 175         self.layout = QGridLayout(self)
 176         self.layout.addWidget(QLabel("Your transaction has been sent.\nPlease enter a label for this transaction for future reference."))
 177
 178         self.label_edit = QLineEdit()
 179         self.label_edit.setPlaceholderText(_("Transaction label"))
 180         self.label_edit.setObjectName("label_input")
 181         self.label_edit.setAttribute(Qt.WA_MacShowFocusRect, 0)
 182         self.label_edit.setFocusPolicy(Qt.ClickFocus)
 183         self.layout.addWidget(self.label_edit)
 184
 185         self.save_button = QPushButton(_("Save"))
 186         self.layout.addWidget(self.save_button)
 187         self.save_button.clicked.connect(self.set_label)
 188
 189         self.exec_()
 190
 191 class MiniWindow(QDialog):
 192
 193     def __init__(self, actuator, expand_callback, config):
 194         super(MiniWindow, self).__init__()
 195         tx = "e08115d0f7819aee65b9d24f81ef9d46eb62bb67ddef5318156cbc3ceb7b703e"
 196
 197         self.actuator = actuator
 198         self.config = config
 199         self.btc_balance = None
 200         self.quote_currencies = ["EUR", "USD", "GBP"]
 201         self.actuator.set_configured_currency(self.set_quote_currency)
 202         self.exchanger = exchange_rate.Exchanger(self)
 203         # Needed because price discovery is done in a different thread
 204         # which needs to be sent back to this main one to update the GUI
 205         self.connect(self, SIGNAL("refresh_balance()"), self.refresh_balance)
 206
 207         self.balance_label = BalanceLabel(self.change_quote_currency)
 208         self.balance_label.setObjectName("balance_label")
 209
 210
 211         # Bitcoin address code
 212         self.address_input = QLineEdit()
 213         self.address_input.setPlaceholderText(_("Enter a Bitcoin address or contact"))
 214         self.address_input.setObjectName("address_input")
 215
 216         self.address_input.setFocusPolicy(Qt.ClickFocus)
 217
 218         self.address_input.textChanged.connect(self.address_field_changed)
 219         resize_line_edit_width(self.address_input,
 220                                "1BtaFUr3qVvAmwrsuDuu5zk6e4s2rxd2Gy")
 221
 222         self.address_completions = QStringListModel()
 223         address_completer = QCompleter(self.address_input)
 224         address_completer.setCaseSensitivity(False)
 225         address_completer.setModel(self.address_completions)
 226         self.address_input.setCompleter(address_completer)
 227
 228         address_layout = QHBoxLayout()
 229         address_layout.addWidget(self.address_input)
 230
 231         self.amount_input = QLineEdit()
 232         self.amount_input.setPlaceholderText(_("... and amount"))
 233         self.amount_input.setObjectName("amount_input")
 234
 235         self.amount_input.setFocusPolicy(Qt.ClickFocus)
 236         # This is changed according to the user's displayed balance
 237         self.amount_validator = QDoubleValidator(self.amount_input)
 238         self.amount_validator.setNotation(QDoubleValidator.StandardNotation)
 239         self.amount_validator.setDecimals(8)
 240         self.amount_input.setValidator(self.amount_validator)
 241
 242         # This removes the very ugly OSX highlighting, please leave this in :D
 243         self.address_input.setAttribute(Qt.WA_MacShowFocusRect, 0)
 244         self.amount_input.setAttribute(Qt.WA_MacShowFocusRect, 0)
 245         self.amount_input.textChanged.connect(self.amount_input_changed)
 246
 247         self.send_button = QPushButton(_("&Send"))
 248         self.send_button.setObjectName("send_button")
 249         self.send_button.setDisabled(True);
 250         self.send_button.clicked.connect(self.send)
 251
 252         # Creating the receive button
 253         self.receive_button = QPushButton(_("&Receive"))
 254         self.receive_button.setObjectName("receive_button")
 255         self.receive_button.setDefault(True)
 256
 257         main_layout = QGridLayout(self)
 258
 259         main_layout.addWidget(self.balance_label, 0, 0)
 260         main_layout.addWidget(self.receive_button, 0, 1)
 261
 262         main_layout.addWidget(self.address_input, 1, 0)
 263
 264         main_layout.addWidget(self.amount_input, 2, 0)
 265         main_layout.addWidget(self.send_button, 2, 1)
 266
 267         self.history_list = history_widget.HistoryWidget()
 268         self.history_list.setObjectName("history")
 269         self.history_list.hide()
 270         self.history_list.setAlternatingRowColors(True)
 271
 272         main_layout.addWidget(self.history_list, 3, 0, 1, 2)
 273
 274
 275         self.receiving = receiving_widget.ReceivingWidget(self)
 276         self.receiving.setObjectName("receiving")
 277
 278         # Add to the right side
 279         self.receiving_box = QGroupBox(_("Select a receiving address"))
 280         extra_layout = QGridLayout()
 281
 282         # Checkbox to filter used addresses
 283         hide_used = QCheckBox(_('Hide used addresses'))
 284         hide_used.setChecked(True)
 285         hide_used.stateChanged.connect(self.receiving.toggle_used)
 286
 287         # Events for receiving addresses
 288         self.receiving.clicked.connect(self.receiving.copy_address)
 289         self.receiving.itemDoubleClicked.connect(self.receiving.edit_label)
 290         self.receiving.itemChanged.connect(self.receiving.update_label)
 291
 292         # Label
 293         extra_layout.addWidget( QLabel(_('Selecting an address will copy it to the clipboard.\nDouble clicking the label will allow you to edit it.') ),0,0)
 294
 295         extra_layout.addWidget(self.receiving, 1,0)
 296         extra_layout.addWidget(hide_used, 2,0)
 297         extra_layout.setColumnMinimumWidth(0,200)
 298
 299         self.receiving_box.setLayout(extra_layout)
 300         main_layout.addWidget(self.receiving_box,0,3,-1,3)
 301         self.receiving_box.hide()
 302
 303         self.receive_button.clicked.connect(self.toggle_receiving_layout)
 304
 305         # Creating the menu bar
 306         menubar = QMenuBar()
 307         electrum_menu = menubar.addMenu(_("&Bitcoin"))
 308
 309         electrum_menu.addSeparator()
 310
 311         quit_option = electrum_menu.addAction(_("&Quit"))
 312         quit_option.triggered.connect(self.close)
 313
 314         view_menu = menubar.addMenu(_("&View"))
 315         extra_menu = menubar.addMenu(_("&Extra"))
 316
 317         backup_wallet = extra_menu.addAction( _("&Create wallet backup"))
 318         backup_wallet.triggered.connect(self.backup_wallet)
 319
 320         export_csv = extra_menu.addAction( _("&Export transactions to CSV") )
 321         export_csv.triggered.connect(self.actuator.csv_transaction)
 322
 323         master_key = extra_menu.addAction( _("Copy master public key to clipboard") )
 324         master_key.triggered.connect(self.actuator.copy_master_public_key)
 325
 326         expert_gui = view_menu.addAction(_("&Classic GUI"))
 327         expert_gui.triggered.connect(expand_callback)
 328         themes_menu = view_menu.addMenu(_("&Themes"))
 329         selected_theme = self.actuator.selected_theme()
 330         theme_group = QActionGroup(self)
 331         for theme_name in self.actuator.theme_names():
 332             theme_action = themes_menu.addAction(theme_name)
 333             theme_action.setCheckable(True)
 334             if selected_theme == theme_name:
 335                 theme_action.setChecked(True)
 336             class SelectThemeFunctor:
 337                 def __init__(self, theme_name, toggle_theme):
 338                     self.theme_name = theme_name
 339                     self.toggle_theme = toggle_theme
 340                 def __call__(self, checked):
 341                     if checked:
 342                         self.toggle_theme(self.theme_name)
 343             delegate = SelectThemeFunctor(theme_name, self.toggle_theme)
 344             theme_action.toggled.connect(delegate)
 345             theme_group.addAction(theme_action)
 346         view_menu.addSeparator()
 347         show_history = view_menu.addAction(_("Show History"))
 348         show_history.setCheckable(True)
 349         show_history.toggled.connect(self.show_history)
 350
 351         help_menu = menubar.addMenu(_("&Help"))
 352         the_website = help_menu.addAction(_("&Website"))
 353         the_website.triggered.connect(self.the_website)
 354         help_menu.addSeparator()
 355         report_bug = help_menu.addAction(_("&Report Bug"))
 356         report_bug.triggered.connect(self.show_report_bug)
 357         show_about = help_menu.addAction(_("&About"))
 358         show_about.triggered.connect(self.show_about)
 359         main_layout.setMenuBar(menubar)
 360         self.main_layout = main_layout
 361
 362         quit_shortcut = QShortcut(QKeySequence("Ctrl+Q"), self)
 363         quit_shortcut.activated.connect(self.close)
 364         close_shortcut = QShortcut(QKeySequence("Ctrl+W"), self)
 365         close_shortcut.activated.connect(self.close)
 366
 367         g = self.config.get("winpos-lite",[4, 25, 351, 149])
 368         self.setGeometry(g[0], g[1], g[2], g[3])
 369
 370         show_hist = self.config.get("gui_show_history",False)
 371         show_history.setChecked(show_hist)
 372         self.show_history(show_hist)
 373
 374         self.setWindowIcon(QIcon(":electrum.png"))
 375         self.setWindowTitle("Electrum")
 376         self.setWindowFlags(Qt.Window|Qt.MSWindowsFixedSizeDialogHint)
 377         self.layout().setSizeConstraint(QLayout.SetFixedSize)
 378         self.setObjectName("main_window")
 379         self.show()
 380
 381     def toggle_receiving_layout(self):
 382         if self.receiving_box.isVisible():
 383             self.receiving_box.hide()
 384             self.receive_button.setProperty("isActive", False)
 385
 386             qApp.style().unpolish(self.receive_button)
 387             qApp.style().polish(self.receive_button)
 388         else:
 389             self.receiving_box.show()
 390             self.receive_button.setProperty("isActive", 'true')
 391
 392             qApp.style().unpolish(self.receive_button)
 393             qApp.style().polish(self.receive_button)
 394
 395     def toggle_theme(self, theme_name):
 396         old_path = QDir.currentPath()
 397         self.actuator.change_theme(theme_name)
 398         # Recompute style globally
 399         qApp.style().unpolish(self)
 400         qApp.style().polish(self)
 401         QDir.setCurrent(old_path)
 402
 403     def closeEvent(self, event):
 404         g = self.geometry()
 405         self.config.set_key("winpos-lite", [g.left(),g.top(),g.width(),g.height()],True)
 406         self.config.set_key("gui_show_history", self.history_list.isVisible(),True)
 407
 408         super(MiniWindow, self).closeEvent(event)
 409         qApp.quit()
 410
 411     def set_payment_fields(self, dest_address, amount):
 412         self.address_input.setText(dest_address)
 413         self.address_field_changed(dest_address)
 414         self.amount_input.setText(amount)
 415
 416     def activate(self):
 417         pass
 418
 419     def deactivate(self):
 420         pass
 421
 422     def set_quote_currency(self, currency):
 423         """Set and display the fiat currency country."""
 424         assert currency in self.quote_currencies
 425         self.quote_currencies.remove(currency)
 426         self.quote_currencies.insert(0, currency)
 427         self.refresh_balance()
 428
 429     def change_quote_currency(self):
 430         self.quote_currencies = \
 431             self.quote_currencies[1:] + self.quote_currencies[0:1]
 432         self.actuator.set_config_currency(self.quote_currencies[0])
 433         self.refresh_balance()
 434
 435     def refresh_balance(self):
 436         if self.btc_balance is None:
 437             # Price has been discovered before wallet has been loaded
 438             # and server connect... so bail.
 439             return
 440         self.set_balances(self.btc_balance)
 441         self.amount_input_changed(self.amount_input.text())
 442
 443     def set_balances(self, btc_balance):
 444         """Set the bitcoin balance and update the amount label accordingly."""
 445         self.btc_balance = btc_balance
 446         quote_text = self.create_quote_text(btc_balance)
 447         if quote_text:
 448             quote_text = "(%s)" % quote_text
 449         btc_balance = "%.2f" % (btc_balance / bitcoin(1))
 450         self.balance_label.set_balance_text(btc_balance, quote_text)
 451         self.setWindowTitle("Electrum %s - %s BTC" % (electrum_version, btc_balance))
 452
 453     def amount_input_changed(self, amount_text):
 454         """Update the number of bitcoins displayed."""
 455         self.check_button_status()
 456
 457         try:
 458             amount = D(str(amount_text))
 459         except decimal.InvalidOperation:
 460             self.balance_label.show_balance()
 461         else:
 462             quote_text = self.create_quote_text(amount * bitcoin(1))
 463             if quote_text:
 464                 self.balance_label.set_amount_text(quote_text)
 465                 self.balance_label.show_amount()
 466             else:
 467                 self.balance_label.show_balance()
 468
 469     def create_quote_text(self, btc_balance):
 470         """Return a string copy of the amount fiat currency the
 471         user has in bitcoins."""
 472         quote_currency = self.quote_currencies[0]
 473         quote_balance = self.exchanger.exchange(btc_balance, quote_currency)
 474         if quote_balance is None:
 475             quote_text = ""
 476         else:
 477             quote_text = "%.2f %s" % ((quote_balance / bitcoin(1)),
 478                                       quote_currency)
 479         return quote_text
 480
 481     def send(self):
 482         if self.actuator.send(self.address_input.text(),
 483                               self.amount_input.text(), self):
 484             self.address_input.setText("")
 485             self.amount_input.setText("")
 486
 487     def check_button_status(self):
 488         """Check that the bitcoin address is valid and that something
 489         is entered in the amount before making the send button clickable."""
 490         try:
 491             value = D(str(self.amount_input.text())) * 10**8
 492         except decimal.InvalidOperation:
 493             value = None
 494         # self.address_input.property(...) returns a qVariant, not a bool.
 495         # The == is needed to properly invoke a comparison.
 496         if (self.address_input.property("isValid") == True and
 497             value is not None and 0 < value <= self.btc_balance):
 498             self.send_button.setDisabled(False)
 499         else:
 500             self.send_button.setDisabled(True)
 501
 502     def address_field_changed(self, address):
 503         # label or alias, with address in brackets
 504         match2 = re.match("(.*?)\s*\<([1-9A-HJ-NP-Za-km-z]{26,})\>",
 505                           address)
 506         if match2:
 507           address = match2.group(2)
 508           self.address_input.setText(address)
 509
 510         if self.actuator.is_valid(address):
 511             self.check_button_status()
 512             self.address_input.setProperty("isValid", True)
 513             self.recompute_style(self.address_input)
 514         else:
 515             self.send_button.setDisabled(True)
 516             self.address_input.setProperty("isValid", False)
 517             self.recompute_style(self.address_input)
 518
 519         if len(address) == 0:
 520             self.address_input.setProperty("isValid", None)
 521             self.recompute_style(self.address_input)
 522
 523     def recompute_style(self, element):
 524         self.style().unpolish(element)
 525         self.style().polish(element)
 526
 527     def copy_address(self):
 528         receive_popup = ReceivePopup(self.receive_button)
 529         self.actuator.copy_address(receive_popup)
 530
 531     def update_completions(self, completions):
 532         self.address_completions.setStringList(completions)
 533
 534
 535     def update_history(self, tx_history):
 536         from util import format_satoshis, age
 537
 538         self.history_list.empty()
 539
 540         for item in tx_history[-10:]:
 541             tx_hash, conf, is_mine, value, fee, balance, timestamp = item
 542             label = self.actuator.wallet.get_label(tx_hash)[0]
 543             #amount = D(value) / 10**8
 544             v_str = format_satoshis(value, True)
 545             self.history_list.append(label, v_str, age(timestamp))
 546
 547     def acceptbit(self):
 548         self.actuator.acceptbit(self.quote_currencies[0])
 549
 550     def the_website(self):
 551         webbrowser.open("http://electrum-desktop.com")
 552
 553     def show_about(self):
 554         QMessageBox.about(self, "Electrum",
 555             _("Electrum's focus is speed, with low resource usage and simplifying Bitcoin. You do not need to perform regular backups, because your wallet can be recovered from a secret phrase that you can memorize or write on paper. Startup times are instant because it operates in conjuction with high-performance servers that handle the most complicated parts of the Bitcoin system.\n\nSend donations to 1JwTMv4GWaPdf931N6LNPJeZBfZgZJ3zX1"))
 556
 557     def show_report_bug(self):
 558         QMessageBox.information(self, "Electrum - " + _("Reporting Bugs"),
 559             _("Please report any bugs as issues on github: https://github.com/spesmilo/electrum/issues"))
 560
 561     def show_history(self, toggle_state):
 562         if toggle_state:
 563             self.main_layout.setRowMinimumHeight(3,200)
 564             self.history_list.show()
 565         else:
 566             self.main_layout.setRowMinimumHeight(3,0)
 567             self.history_list.hide()
 568
 569     def backup_wallet(self):
 570         try:
 571           folderName = QFileDialog.getExistingDirectory(QWidget(), 'Select folder to save a copy of your wallet to', os.path.expanduser('~/'))
 572           if folderName:
 573             sourceFile = util.user_dir() + '/electrum.dat'
 574             shutil.copy2(sourceFile, str(folderName))
 575             QMessageBox.information(None,"Wallet backup created", "A copy of your wallet file was created in '%s'" % str(folderName))
 576         except (IOError, os.error), reason:
 577           QMessageBox.critical(None,"Unable to create backup", "Electrum was unable copy your wallet file to the specified location.\n" + str(reason))
 578
 579
 580
 581
 582 class BalanceLabel(QLabel):
 583
 584     SHOW_CONNECTING = 1
 585     SHOW_BALANCE = 2
 586     SHOW_AMOUNT = 3
 587
 588     def __init__(self, change_quote_currency, parent=None):
 589         super(QLabel, self).__init__(_("Connecting..."), parent)
 590         self.change_quote_currency = change_quote_currency
 591         self.state = self.SHOW_CONNECTING
 592         self.balance_text = ""
 593         self.amount_text = ""
 594
 595     def mousePressEvent(self, event):
 596         """Change the fiat currency selection if window background is clicked."""
 597         if self.state != self.SHOW_CONNECTING:
 598             self.change_quote_currency()
 599
 600     def set_balance_text(self, btc_balance, quote_text):
 601         """Set the amount of bitcoins in the gui."""
 602         if self.state == self.SHOW_CONNECTING:
 603             self.state = self.SHOW_BALANCE
 604         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)
 605         if self.state == self.SHOW_BALANCE:
 606             self.setText(self.balance_text)
 607
 608     def set_amount_text(self, quote_text):
 609         self.amount_text = "<span style='font-size: 10pt'>%s</span>" % quote_text
 610         if self.state == self.SHOW_AMOUNT:
 611             self.setText(self.amount_text)
 612
 613     def show_balance(self):
 614         if self.state == self.SHOW_AMOUNT:
 615             self.state = self.SHOW_BALANCE
 616             self.setText(self.balance_text)
 617
 618     def show_amount(self):
 619         if self.state == self.SHOW_BALANCE:
 620             self.state = self.SHOW_AMOUNT
 621             self.setText(self.amount_text)
 622
 623 def ok_cancel_buttons(dialog):
 624     row_layout = QHBoxLayout()
 625     row_layout.addStretch(1)
 626     ok_button = QPushButton(_("OK"))
 627     row_layout.addWidget(ok_button)
 628     ok_button.clicked.connect(dialog.accept)
 629     cancel_button = QPushButton(_("Cancel"))
 630     row_layout.addWidget(cancel_button)
 631     cancel_button.clicked.connect(dialog.reject)
 632     return row_layout
 633
 634 class PasswordDialog(QDialog):
 635
 636     def __init__(self, parent):
 637         super(QDialog, self).__init__(parent)
 638
 639         self.setModal(True)
 640
 641         self.password_input = QLineEdit()
 642         self.password_input.setEchoMode(QLineEdit.Password)
 643
 644         main_layout = QVBoxLayout(self)
 645         message = _('Please enter your password')
 646         main_layout.addWidget(QLabel(message))
 647
 648         grid = QGridLayout()
 649         grid.setSpacing(8)
 650         grid.addWidget(QLabel(_('Password')), 1, 0)
 651         grid.addWidget(self.password_input, 1, 1)
 652         main_layout.addLayout(grid)
 653
 654         main_layout.addLayout(ok_cancel_buttons(self))
 655         self.setLayout(main_layout)
 656
 657     def run(self):
 658         if not self.exec_():
 659             return
 660         return unicode(self.password_input.text())
 661
 662 class ReceivePopup(QDialog):
 663
 664     def leaveEvent(self, event):
 665         self.close()
 666
 667     def setup(self, address):
 668         label = QLabel(_("Copied your Bitcoin address to the clipboard!"))
 669         address_display = QLineEdit(address)
 670         address_display.setReadOnly(True)
 671         resize_line_edit_width(address_display, address)
 672
 673         main_layout = QVBoxLayout(self)
 674         main_layout.addWidget(label)
 675         main_layout.addWidget(address_display)
 676
 677         self.setMouseTracking(True)
 678         self.setWindowTitle("Electrum - " + _("Receive Bitcoin payment"))
 679         self.setWindowFlags(Qt.Window|Qt.FramelessWindowHint|
 680                             Qt.MSWindowsFixedSizeDialogHint)
 681         self.layout().setSizeConstraint(QLayout.SetFixedSize)
 682         #self.setFrameStyle(QFrame.WinPanel|QFrame.Raised)
 683         #self.setAlignment(Qt.AlignCenter)
 684
 685     def popup(self):
 686         parent = self.parent()
 687         top_left_pos = parent.mapToGlobal(parent.rect().bottomLeft())
 688         self.move(top_left_pos)
 689         center_mouse_pos = self.mapToGlobal(self.rect().center())
 690         QCursor.setPos(center_mouse_pos)
 691         self.show()
 692
 693 class MiniActuator:
 694     """Initialize the definitions relating to themes and
 695     sending/recieving bitcoins."""
 696
 697
 698     def __init__(self, wallet):
 699         """Retrieve the gui theme used in previous session."""
 700         self.wallet = wallet
 701         self.theme_name = self.wallet.config.get('litegui_theme','Cleanlook')
 702         self.themes = load_theme_paths()
 703
 704     def load_theme(self):
 705         """Load theme retrieved from wallet file."""
 706         try:
 707             theme_prefix, theme_path = self.themes[self.theme_name]
 708         except KeyError:
 709             util.print_error("Theme not found!", self.theme_name)
 710             return
 711         QDir.setCurrent(os.path.join(theme_prefix, theme_path))
 712         with open(rsrc("style.css")) as style_file:
 713             qApp.setStyleSheet(style_file.read())
 714
 715     def theme_names(self):
 716         """Sort themes."""
 717         return sorted(self.themes.keys())
 718
 719     def selected_theme(self):
 720         """Select theme."""
 721         return self.theme_name
 722
 723     def change_theme(self, theme_name):
 724         """Change theme."""
 725         self.theme_name = theme_name
 726         self.wallet.config.set_key('litegui_theme',theme_name)
 727         self.load_theme()
 728
 729     def set_configured_currency(self, set_quote_currency):
 730         """Set the inital fiat currency conversion country (USD/EUR/GBP) in
 731         the GUI to what it was set to in the wallet."""
 732         currency = self.wallet.config.get('conversion_currency')
 733         # currency can be none when Electrum is used for the first
 734         # time and no setting has been created yet.
 735         if currency is not None:
 736             set_quote_currency(currency)
 737
 738     def set_config_currency(self, conversion_currency):
 739         """Change the wallet fiat currency country."""
 740         self.wallet.config.set_key('conversion_currency',conversion_currency,True)
 741
 742     def copy_address(self, receive_popup):
 743         """Copy the wallet addresses into the client."""
 744         addrs = [addr for addr in self.wallet.all_addresses()
 745                  if not self.wallet.is_change(addr)]
 746         # Select most recent addresses from gap limit
 747         addrs = addrs[-self.wallet.gap_limit:]
 748         copied_address = random.choice(addrs)
 749         qApp.clipboard().setText(copied_address)
 750         receive_popup.setup(copied_address)
 751         receive_popup.popup()
 752
 753     def waiting_dialog(self, f):
 754         s = Timer()
 755         s.start()
 756         w = QDialog()
 757         w.resize(200, 70)
 758         w.setWindowTitle('Electrum')
 759         l = QLabel('Sending transaction, please wait.')
 760         vbox = QVBoxLayout()
 761         vbox.addWidget(l)
 762         w.setLayout(vbox)
 763         w.show()
 764         def ff():
 765             s = f()
 766             if s: l.setText(s)
 767             else: w.close()
 768         w.connect(s, QtCore.SIGNAL('timersignal'), ff)
 769         w.exec_()
 770         w.destroy()
 771
 772     def csv_transaction(self):
 773         try:
 774           fileName = QFileDialog.getSaveFileName(QWidget(), 'Select file to export your wallet transactions to', os.path.expanduser('~/'), "*.csv")
 775           if fileName:
 776             with open(fileName, "w+") as csvfile:
 777                 transaction = csv.writer(csvfile)
 778                 transaction.writerow(["transaction_hash","label", "confirmations", "value", "fee", "balance", "timestamp"])
 779                 for item in self.wallet.get_tx_history():
 780                     tx_hash, confirmations, is_mine, value, fee, balance, timestamp = item
 781                     if confirmations:
 782                         if timestamp is not None:
 783                             try:
 784                                 time_string = datetime.datetime.fromtimestamp(timestamp).isoformat(' ')[:-3]
 785                             except [RuntimeError, TypeError, NameError] as reason:
 786                                 time_string = "unknown"
 787                                 pass
 788                         else:
 789                           time_string = "unknown"
 790                     else:
 791                         time_string = "pending"
 792
 793                     if value is not None:
 794                         value_string = format_satoshis(value, True, self.wallet.num_zeros)
 795                     else:
 796                         value_string = '--'
 797
 798                     if fee is not None:
 799                         fee_string = format_satoshis(fee, True, self.wallet.num_zeros)
 800                     else:
 801                         fee_string = '0'
 802
 803                     if tx_hash:
 804                         label, is_default_label = self.wallet.get_label(tx_hash)
 805                     else:
 806                       label = ""
 807
 808                     balance_string = format_satoshis(balance, False, self.wallet.num_zeros)
 809                     transaction.writerow([tx_hash, label, confirmations, value_string, fee_string, balance_string, time_string])
 810                 QMessageBox.information(None,"CSV Export created", "Your CSV export has been succesfully created.")
 811         except (IOError, os.error), reason:
 812           QMessageBox.critical(None,"Unable to create csv", "Electrum was unable to produce a transaction export.\n" + str(reason))
 813
 814     def send(self, address, amount, parent_window):
 815         """Send bitcoins to the target address."""
 816         dest_address = self.fetch_destination(address)
 817
 818         if dest_address is None or not self.wallet.is_valid(dest_address):
 819             QMessageBox.warning(parent_window, _('Error'),
 820                 _('Invalid Bitcoin Address') + ':\n' + address, _('OK'))
 821             return False
 822
 823         convert_amount = lambda amount: \
 824             int(D(unicode(amount)) * bitcoin(1))
 825         amount = convert_amount(amount)
 826
 827         if self.wallet.use_encryption:
 828             password_dialog = PasswordDialog(parent_window)
 829             password = password_dialog.run()
 830             if not password:
 831                 return
 832         else:
 833             password = None
 834
 835         fee = 0
 836         # 0.1 BTC = 10000000
 837         if amount < bitcoin(1) / 10:
 838             # 0.001 BTC
 839             fee = bitcoin(1) / 1000
 840
 841         try:
 842             tx = self.wallet.mktx([(dest_address, amount)], "", password, fee)
 843         except BaseException as error:
 844             QMessageBox.warning(parent_window, _('Error'), str(error), _('OK'))
 845             return False
 846
 847         h = self.wallet.send_tx(tx)
 848
 849         self.waiting_dialog(lambda: False if self.wallet.tx_event.isSet() else _("Sending transaction, please wait..."))
 850
 851         status, message = self.wallet.receive_tx(h)
 852
 853         if not status:
 854             import tempfile
 855             dumpf = tempfile.NamedTemporaryFile(delete=False)
 856             dumpf.write(tx)
 857             dumpf.close()
 858             print "Dumped error tx to", dumpf.name
 859             QMessageBox.warning(parent_window, _('Error'), message, _('OK'))
 860             return False
 861
 862         TransactionWindow(message, self)
 863 #        QMessageBox.information(parent_window, '',
 864 #            _('Your transaction has been sent.') + '\n' + message, _('OK'))
 865         return True
 866
 867     def fetch_destination(self, address):
 868         recipient = unicode(address).strip()
 869
 870         # alias
 871         match1 = re.match("^(|([\w\-\.]+)@)((\w[\w\-]+\.)+[\w\-]+)$",
 872                           recipient)
 873
 874         # label or alias, with address in brackets
 875         match2 = re.match("(.*?)\s*\<([1-9A-HJ-NP-Za-km-z]{26,})\>",
 876                           recipient)
 877
 878         if match1:
 879             dest_address = \
 880                 self.wallet.get_alias(recipient, True,
 881                                       self.show_message, self.question)
 882             return dest_address
 883         elif match2:
 884             return match2.group(2)
 885         else:
 886             return recipient
 887
 888     def is_valid(self, address):
 889         """Check if bitcoin address is valid."""
 890
 891         return self.wallet.is_valid(address)
 892
 893     def copy_master_public_key(self):
 894         master_pubkey = self.wallet.master_public_key
 895         qApp.clipboard().setText(master_pubkey)
 896         QMessageBox.information(None,"Copy succesful", "Your public master key has been copied to your clipboard.")
 897
 898
 899     def acceptbit(self, currency):
 900         master_pubkey = self.wallet.master_public_key
 901         url = "http://acceptbit.com/mpk/%s/%s" % (master_pubkey, currency)
 902         webbrowser.open(url)
 903
 904     def show_seed_dialog(self):
 905         gui_qt.ElectrumWindow.show_seed_dialog(self.wallet)
 906
 907 class MiniDriver(QObject):
 908
 909     INITIALIZING = 0
 910     CONNECTING = 1
 911     SYNCHRONIZING = 2
 912     READY = 3
 913
 914     def __init__(self, wallet, window):
 915         super(QObject, self).__init__()
 916
 917         self.wallet = wallet
 918         self.window = window
 919
 920         self.wallet.interface.register_callback('updated',self.update_callback)
 921         self.wallet.interface.register_callback('connected', self.update_callback)
 922         self.wallet.interface.register_callback('disconnected', self.update_callback)
 923
 924         self.state = None
 925
 926         self.initializing()
 927         self.connect(self, SIGNAL("updatesignal()"), self.update)
 928         self.update_callback()
 929
 930     # This is a hack to workaround that Qt does not like changing the
 931     # window properties from this other thread before the runloop has
 932     # been called from.
 933     def update_callback(self):
 934         self.emit(SIGNAL("updatesignal()"))
 935
 936     def update(self):
 937         if not self.wallet.interface:
 938             self.initializing()
 939         elif not self.wallet.interface.is_connected:
 940             self.connecting()
 941         elif not self.wallet.up_to_date:
 942             self.synchronizing()
 943         else:
 944             self.ready()
 945
 946         if self.wallet.up_to_date:
 947             self.update_balance()
 948             self.update_completions()
 949             self.update_history()
 950
 951     def initializing(self):
 952         if self.state == self.INITIALIZING:
 953             return
 954         self.state = self.INITIALIZING
 955         self.window.deactivate()
 956
 957     def connecting(self):
 958         if self.state == self.CONNECTING:
 959             return
 960         self.state = self.CONNECTING
 961         self.window.deactivate()
 962
 963     def synchronizing(self):
 964         if self.state == self.SYNCHRONIZING:
 965             return
 966         self.state = self.SYNCHRONIZING
 967         self.window.deactivate()
 968
 969     def ready(self):
 970         if self.state == self.READY:
 971             return
 972         self.state = self.READY
 973         self.window.activate()
 974
 975     def update_balance(self):
 976         conf_balance, unconf_balance = self.wallet.get_balance()
 977         balance = D(conf_balance + unconf_balance)
 978         self.window.set_balances(balance)
 979
 980     def update_completions(self):
 981         completions = []
 982         for addr, label in self.wallet.labels.items():
 983             if addr in self.wallet.addressbook:
 984                 completions.append("%s <%s>" % (label, addr))
 985         completions = completions + self.wallet.aliases.keys()
 986         self.window.update_completions(completions)
 987
 988     def update_history(self):
 989         tx_history = self.wallet.get_tx_history()
 990         self.window.update_history(tx_history)
 991
 992
 993 if __name__ == "__main__":
 994     app = QApplication(sys.argv)
 995     with open(rsrc("style.css")) as style_file:
 996         app.setStyleSheet(style_file.read())
 997     mini = MiniWindow()
 998     sys.exit(app.exec_())
 999