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