Пример #1
0
 def on_new_window(self, window):
     # Additional send and receive edit boxes
     if not hasattr(window, 'fiat_send_e'):
         send_e = AmountEdit(self.get_currency)
         window.send_grid.addWidget(send_e, 4, 2, Qt.AlignLeft)
         window.amount_e.frozen.connect(
             lambda: send_e.setFrozen(window.amount_e.isReadOnly()))
         receive_e = AmountEdit(self.get_currency)
         window.receive_grid.addWidget(receive_e, 2, 2, Qt.AlignLeft)
         window.fiat_send_e = send_e
         window.fiat_receive_e = receive_e
         self.connect_fields(window, window.amount_e, send_e, window.fee_e)
         self.connect_fields(window, window.receive_amount_e, receive_e,
                             None)
     else:
         window.fiat_send_e.show()
         window.fiat_receive_e.show()
     window.history_list.refresh_headers()
     window.update_status()
     window.connect(self, SIGNAL('new_fx_quotes'),
                    lambda: self.on_fx_quotes(window))
     window.connect(self, SIGNAL('new_fx_history'),
                    lambda: self.on_fx_history(window))
     window.connect(self, SIGNAL('close_fx_plugin'),
                    lambda: self.restore_window(window))
     window.connect(self, SIGNAL('refresh_headers'),
                    window.history_list.refresh_headers)
Пример #2
0
 def add_send_edit(self):
     self.send_fiat_e = AmountEdit(self.fiat_unit)
     btc_e = self.win.amount_e
     fee_e = self.win.fee_e
     self.connect_fields(btc_e, self.send_fiat_e, fee_e)
     self.win.send_grid.addWidget(self.send_fiat_e, 4, 3, Qt.AlignHCenter)
     btc_e.frozen.connect(
         lambda: self.send_fiat_e.setFrozen(btc_e.isReadOnly()))
Пример #3
0
    def fiat_dialog(self):
        if not self.config.get('use_exchange_rate'):
            self.gui.main_window.show_message(
                _("To use this feature, first enable the exchange rate plugin."
                  ))
            return

        if not self.gui.main_window.network.is_connected():
            self.gui.main_window.show_message(
                _("To use this feature, you must have a network connection."))
            return

        quote_currency = self.fiat_unit()

        d = QDialog(self.gui.main_window)
        d.setWindowTitle("Fiat")
        vbox = QVBoxLayout(d)
        text = "Amount to Send in " + quote_currency
        vbox.addWidget(QLabel(_(text) + ':'))

        grid = QGridLayout()
        fiat_e = AmountEdit(self.fiat_unit)
        grid.addWidget(fiat_e, 1, 0)

        r = {}
        self.get_fiat_price_text(r)
        quote = r.get(0)
        if quote:
            text = "1 LTC~%s" % quote
            grid.addWidget(QLabel(_(text)), 4, 0, 3, 0)
        else:
            self.gui.main_window.show_message(
                _("Exchange rate not available.  Please check your network connection."
                  ))
            return

        vbox.addLayout(grid)
        vbox.addLayout(ok_cancel_buttons(d))

        if not d.exec_():
            return

        fiat = str(fiat_e.text())

        if str(fiat) == "" or str(fiat) == ".":
            fiat = "0"

        quote = quote[:-4]
        btcamount = Decimal(fiat) / Decimal(quote)
        if str(self.gui.main_window.base_unit()) == "mLTC":
            btcamount = btcamount * 1000
        quote = "%.8f" % btcamount
        self.gui.main_window.amount_e.setText(quote)
Пример #4
0
    def on_new_window(self, window):
        # Additional send and receive edit boxes
        send_e = AmountEdit(self.config_ccy)
        window.send_grid.addWidget(send_e, 4, 2, Qt.AlignLeft)
        window.amount_e.frozen.connect(
            lambda: send_e.setFrozen(window.amount_e.isReadOnly()))
        receive_e = AmountEdit(self.config_ccy)
        window.receive_grid.addWidget(receive_e, 2, 2, Qt.AlignLeft)

        self.windows[window] = {'edits': (send_e, receive_e),
                                'last_edited': {}}
        self.connect_fields(window, window.amount_e, send_e, window.fee_e)
        self.connect_fields(window, window.receive_amount_e, receive_e, None)
        window.history_list.refresh_headers()
        window.update_status()
    def fiat_dialog(self):
        if not self.config.get('use_exchange_rate'):
          self.gui.main_window.show_message(_("To use this feature, first enable the exchange rate plugin."))
          return

        if not self.gui.main_window.network.is_connected():
          self.gui.main_window.show_message(_("To use this feature, you must have a network connection."))
          return

        quote_currency = self.fiat_unit()

        d = QDialog(self.gui.main_window)
        d.setWindowTitle("Fiat")
        vbox = QVBoxLayout(d)
        text = "Amount to Send in " + quote_currency
        vbox.addWidget(QLabel(_(text)+':'))

        grid = QGridLayout()
        fiat_e = AmountEdit(self.fiat_unit)
        grid.addWidget(fiat_e, 1, 0)

        r = {}
        self.get_fiat_price_text(r)
        quote = r.get(0)
        if quote:
          text = "1 LTC~%s"%quote
          grid.addWidget(QLabel(_(text)), 4, 0, 3, 0)
        else:
            self.gui.main_window.show_message(_("Exchange rate not available.  Please check your network connection."))
            return

        vbox.addLayout(grid)
        vbox.addLayout(ok_cancel_buttons(d))

        if not d.exec_():
            return

        fiat = str(fiat_e.text())

        if str(fiat) == "" or str(fiat) == ".":
            fiat = "0"

        quote = quote[:-4]
        btcamount = Decimal(fiat) / Decimal(quote)
        if str(self.gui.main_window.base_unit()) == "mLTC":
            btcamount = btcamount * 1000
        quote = "%.8f"%btcamount
        self.gui.main_window.amount_e.setText( quote )
 def add_send_edit(self):
     self.send_fiat_e = AmountEdit(self.fiat_unit)
     btc_e = self.win.amount_e
     fee_e = self.win.fee_e
     self.connect_fields(btc_e, self.send_fiat_e, fee_e)
     self.win.send_grid.addWidget(self.send_fiat_e, 4, 3, Qt.AlignHCenter)
     btc_e.frozen.connect(lambda: self.send_fiat_e.setFrozen(btc_e.isReadOnly()))
Пример #7
0
 def add_fiat_edit(self):
     self.fiat_e = AmountEdit(self.fiat_unit)
     self.btc_e = self.win.amount_e
     grid = self.btc_e.parent()
     def fiat_changed():
         try:
             fiat_amount = Decimal(str(self.fiat_e.text()))
         except:
             self.btc_e.setText("")
             return
         exchange_rate = self.exchanger.exchange(Decimal("1.0"), self.fiat_unit())
         if exchange_rate is not None:
             btc_amount = fiat_amount/exchange_rate
             self.btc_e.setAmount(int(btc_amount*Decimal(100000000)))
             self.btc_e.textEdited.emit("")
     self.fiat_e.textEdited.connect(fiat_changed)
     def btc_changed():
         btc_amount = self.btc_e.get_amount()
         if btc_amount is None:
             self.fiat_e.setText("")
             return
         fiat_amount = self.exchanger.exchange(Decimal(btc_amount)/Decimal(100000000), self.fiat_unit())
         if fiat_amount is not None:
             pos = self.fiat_e.cursorPosition()
             self.fiat_e.setText("%.2f"%fiat_amount)
             self.fiat_e.setCursorPosition(pos)
     self.btc_e.textEdited.connect(btc_changed)
     self.btc_e.frozen.connect(lambda: self.fiat_e.setFrozen(self.btc_e.isReadOnly()))
     self.win.send_grid.addWidget(self.fiat_e, 4, 3, Qt.AlignHCenter)
Пример #8
0
 def on_new_window(self, window):
     # Additional send and receive edit boxes
     send_e = AmountEdit(self.config_ccy)
     window.send_grid.addWidget(send_e, 4, 2, Qt.AlignLeft)
     window.amount_e.frozen.connect(
         lambda: send_e.setFrozen(window.amount_e.isReadOnly()))
     receive_e = AmountEdit(self.config_ccy)
     window.receive_grid.addWidget(receive_e, 2, 2, Qt.AlignLeft)
     window.fiat_send_e = send_e
     window.fiat_receive_e = receive_e
     self.connect_fields(window, window.amount_e, send_e, window.fee_e)
     self.connect_fields(window, window.receive_amount_e, receive_e, None)
     window.history_list.refresh_headers()
     window.update_status()
     window.connect(window.app, SIGNAL('new_fx_quotes'), lambda: self.on_fx_quotes(window))
     window.connect(window.app, SIGNAL('new_fx_history'), lambda: self.on_fx_history(window))
     window.connect(window.app, SIGNAL('close_fx_plugin'), lambda: self.restore_window(window))
     window.connect(window.app, SIGNAL('refresh_headers'), window.history_list.refresh_headers)
Пример #9
0
    def add_fiat_edit(self):
        self.fiat_e = AmountEdit(self.fiat_unit)
        self.btc_e = self.win.amount_e
        grid = self.btc_e.parent()

        def fiat_changed():
            try:
                fiat_amount = Decimal(str(self.fiat_e.text()))
            except:
                self.btc_e.setText("")
                return
            exchange_rate = self.exchanger.exchange(Decimal("1.0"),
                                                    self.fiat_unit())
            if exchange_rate is not None:
                btc_amount = fiat_amount / exchange_rate
                self.btc_e.setAmount(int(btc_amount * Decimal(100000000)))
                self.btc_e.textEdited.emit("")

        self.fiat_e.textEdited.connect(fiat_changed)

        def btc_changed():
            btc_amount = self.btc_e.get_amount()
            if btc_amount is None:
                self.fiat_e.setText("")
                return
            fiat_amount = self.exchanger.exchange(
                Decimal(btc_amount) / Decimal(100000000), self.fiat_unit())
            if fiat_amount is not None:
                pos = self.fiat_e.cursorPosition()
                self.fiat_e.setText("%.2f" % fiat_amount)
                self.fiat_e.setCursorPosition(pos)

        self.btc_e.textEdited.connect(btc_changed)
        self.btc_e.frozen.connect(
            lambda: self.fiat_e.setFrozen(self.btc_e.isReadOnly()))
        self.win.send_grid.addWidget(self.fiat_e, 4, 3, Qt.AlignHCenter)
class Plugin(BasePlugin):

    def __init__(self,a,b):
        BasePlugin.__init__(self,a,b)
        self.currencies = [self.fiat_unit()]
        self.exchanges = [self.config.get('use_exchange', "BTC-e")]
        # Do price discovery
        self.exchanger = Exchanger(self)
        self.win = None
        self.resp_hist = {}
        self.fields = {}
        self.network = None

    @hook
    def set_network(self, network):
        if self.network:
            self.network.remove_job(self.exchanger)
        self.network = network
        if network:
            network.add_job(self.exchanger)

    @hook
    def init_qt(self, gui):
        self.gui = gui
        self.win = self.gui.main_window
        self.win.connect(self.win, SIGNAL("refresh_currencies()"), self.win.update_status)
        self.btc_rate = Decimal("0.0")
        self.tx_list = {}
        self.gui.exchanger = self.exchanger #
        self.add_send_edit()
        self.add_receive_edit()
        self.win.update_status()

    def close(self):
        BasePlugin.close(self)
        self.set_network(None)
        self.exchanger = None
        self.gui.exchanger = None
        self.send_fiat_e.hide()
        self.receive_fiat_e.hide()
        self.win.update_status()

    def set_currencies(self, currency_options):
        self.currencies = sorted(currency_options)
        if self.win:
            self.win.emit(SIGNAL("refresh_currencies()"))
            self.win.emit(SIGNAL("refresh_currencies_combo()"))

    @hook
    def get_fiat_balance_text(self, btc_balance, r):
        # return balance as: 1.23 USD
        r[0] = self.create_fiat_balance_text(Decimal(btc_balance) / COIN)

    def get_fiat_price_text(self, r):
        # return BTC price as: 123.45 USD
        r[0] = self.create_fiat_balance_text(1)
        quote = r[0]
        if quote:
            r[0] = "%s"%quote

    @hook
    def get_fiat_status_text(self, btc_balance, r2):
        # return status as:   (1.23 USD)    1 BTC~123.45 USD
        text = ""
        r = {}
        self.get_fiat_price_text(r)
        quote = r.get(0)
        if quote:
            price_text = "1 LTC~%s"%quote
            fiat_currency = quote[-3:]
            btc_price = self.btc_rate
            fiat_balance = Decimal(btc_price) * Decimal(btc_balance) / COIN
            balance_text = "(%.2f %s)" % (fiat_balance,fiat_currency)
            text = "  " + balance_text + "     " + price_text + " "
        r2[0] = text

    def create_fiat_balance_text(self, btc_balance):
        quote_currency = self.fiat_unit()
        self.exchanger.use_exchange = self.config.get("use_exchange", "BTC-e")
        cur_rate = self.exchanger.exchange(Decimal("1.0"), quote_currency)
        if cur_rate is None:
            quote_text = ""
        else:
            quote_balance = btc_balance * Decimal(cur_rate)
            self.btc_rate = cur_rate
            quote_text = "%.2f %s" % (quote_balance, quote_currency)
        return quote_text

    @hook
    def load_wallet(self, wallet, window):
        tx_list = {}
        for item in self.wallet.get_history(self.wallet.storage.get("current_account", None)):
            tx_hash, conf, value, timestamp, balance = item
            tx_list[tx_hash] = {'value': value, 'timestamp': timestamp }

        self.tx_list = tx_list
        self.cur_exchange = self.config.get('use_exchange', "BTC-e")
        self.set_network(wallet.network)
        t = threading.Thread(target=self.request_history_rates, args=())
        t.setDaemon(True)
        t.start()


    def requires_settings(self):
        return True


    def request_history_rates(self):
        if self.config.get('history_rates') != "checked":
            return
        if not self.tx_list:
            return

        try:
            mintimestr = datetime.datetime.fromtimestamp(int(min(self.tx_list.items(), key=lambda x: x[1]['timestamp'])[1]['timestamp'])).strftime('%Y-%m-%d')
        except Exception:
            return
        maxtimestr = datetime.datetime.now().strftime('%Y-%m-%d')

        if self.cur_exchange == "CoinDesk":
            try:
                self.resp_hist = self.exchanger.get_json('api.coindesk.com', "/v1/bpi/historical/close.json?start=" + mintimestr + "&end=" + maxtimestr)
            except Exception:
                return
        elif self.cur_exchange == "Winkdex":
            try:
                self.resp_hist = self.exchanger.get_json('winkdex.com', "/api/v0/series?start_time=1342915200")['series'][0]['results']
            except Exception:
                return
        elif self.cur_exchange == "BitcoinVenezuela":
            cur_currency = self.fiat_unit()
            if cur_currency in ("ARS", "EUR", "USD", "VEF"):
                try:
                    self.resp_hist = self.exchanger.get_json('api.bitcoinvenezuela.com', "/historical/index.php?coin=LTC")[cur_currency + '_LTC']
                except Exception:
                    return
            else:
                return
        elif self.cur_exchange == "Kraken":
            cur_currency = self.fiat_unit()
            if cur_currency in ("EUR", "USD"):
                try:
                    self.resp_hist = self.exchanger.get_json('api.kraken.com', "https://api.kraken.com/0/public/OHLC?pair=LTC"+cur_currency+"&interval=1440")['result']['XLTCZ'+cur_currency]
                    self.resp_hist = dict([(t[0], t[4]) for t in self.resp_hist])
                except Exception:
                    return
            else:
                return

        self.win.need_update.set()

    @hook
    def history_tab_update(self):
        if self.config.get('history_rates') != "checked":
            return
        if not self.resp_hist:
            return
        if not self.wallet:
            return

        self.win.is_edit = True
        self.win.history_list.setColumnCount(7)
        self.win.history_list.setHeaderLabels( [ '', '', _('Date'), _('Description') , _('Amount'), _('Balance'), _('Fiat Amount')] )
        root = self.win.history_list.invisibleRootItem()
        childcount = root.childCount()
        for i in range(childcount):
            item = root.child(i)
            try:
                tx_info = self.tx_list[str(item.data(0, Qt.UserRole).toPyObject())]
            except Exception:
                newtx = self.wallet.get_history()
                v = newtx[[x[0] for x in newtx].index(str(item.data(0, Qt.UserRole).toPyObject()))][2]
                tx_info = {'timestamp':int(time.time()), 'value': v}
                pass
            tx_time = int(tx_info['timestamp'])
            tx_value = Decimal(str(tx_info['value'])) / COIN
            if self.cur_exchange == "CoinDesk":
                tx_time_str = datetime.datetime.fromtimestamp(tx_time).strftime('%Y-%m-%d')
                try:
                    tx_fiat_val = "%.2f %s" % (tx_value * Decimal(self.resp_hist['bpi'][tx_time_str]), "USD")
                except KeyError:
                    tx_fiat_val = "%.2f %s" % (self.btc_rate * Decimal(str(tx_info['value']))/COIN , "USD")
            elif self.cur_exchange == "Winkdex":
                tx_time_str = datetime.datetime.fromtimestamp(tx_time).strftime('%Y-%m-%d') + "T16:00:00-04:00"
                try:
                    tx_rate = self.resp_hist[[x['timestamp'] for x in self.resp_hist].index(tx_time_str)]['price']
                    tx_fiat_val = "%.2f %s" % (tx_value * Decimal(tx_rate)/Decimal("100.0"), "USD")
                except ValueError:
                    tx_fiat_val = "%.2f %s" % (self.btc_rate * Decimal(tx_info['value'])/COIN , "USD")
                except KeyError:
                    tx_fiat_val = _("No data")
            elif self.cur_exchange == "BitcoinVenezuela":
                tx_time_str = datetime.datetime.fromtimestamp(tx_time).strftime('%Y-%m-%d')
                try:
                    num = self.resp_hist[tx_time_str].replace(',','')
                    tx_fiat_val = "%.2f %s" % (tx_value * Decimal(num), self.fiat_unit())
                except KeyError:
                    tx_fiat_val = _("No data")
            elif self.cur_exchange == "Kraken":
                tx_day_time = int(tx_time / 86400) * 86400
                try:
                    num = self.resp_hist[tx_day_time]
                    tx_fiat_val = "%.2f %s" % (Decimal(str(tx_info['value'])) / COIN * Decimal(num), self.fiat_unit())
                except KeyError:
                    tx_fiat_val = _("No data")
            tx_fiat_val = " "*(12-len(tx_fiat_val)) + tx_fiat_val
            item.setText(6, tx_fiat_val)
            item.setFont(6, QFont(MONOSPACE_FONT))
            if Decimal(str(tx_info['value'])) < 0:
                item.setForeground(6, QBrush(QColor("#BC1E1E")))

        self.win.history_list.setColumnWidth(6, 120)
        self.win.is_edit = False


    def settings_widget(self, window):
        return EnterButton(_('Settings'), self.settings_dialog)

    def settings_dialog(self):
        d = QDialog()
        d.setWindowTitle("Settings")
        layout = QGridLayout(d)
        layout.addWidget(QLabel(_('Exchange rate API: ')), 0, 0)
        layout.addWidget(QLabel(_('Currency: ')), 1, 0)
        layout.addWidget(QLabel(_('History Rates: ')), 2, 0)
        combo = QComboBox()
        combo_ex = QComboBox()
        hist_checkbox = QCheckBox()
        hist_checkbox.setEnabled(False)
        hist_checkbox.setChecked(self.config.get('history_rates', 'unchecked') != 'unchecked')
        ok_button = QPushButton(_("OK"))

        def on_change(x):
            try:
                cur_request = str(self.currencies[x])
            except Exception:
                return
            if cur_request != self.fiat_unit():
                self.config.set_key('currency', cur_request, True)
                cur_exchange = self.config.get('use_exchange', "BTC-e")
                if (cur_exchange, cur_request) in EXCH_SUPPORT_HIST:
                    hist_checkbox.setEnabled(True)
                else:
                    disable_check()
                self.win.update_status()
                try:
                    self.fiat_button
                except:
                    pass
                else:
                    self.fiat_button.setText(cur_request)

        def disable_check():
            hist_checkbox.setChecked(False)
            hist_checkbox.setEnabled(False)

        def on_change_ex(x):
            cur_request = str(self.exchanges[x])
            if cur_request != self.config.get('use_exchange', "BTC-e"):
                self.config.set_key('use_exchange', cur_request, True)
                self.currencies = []
                combo.clear()
                self.timeout = 0
                cur_currency = self.fiat_unit()
                if (cur_request, cur_currency) in EXCH_SUPPORT_HIST:
                    hist_checkbox.setEnabled(True)
                else:
                    disable_check()
                set_currencies(combo)
                self.win.update_status()

        def on_change_hist(checked):
            if checked:
                self.config.set_key('history_rates', 'checked')
                self.request_history_rates()
            else:
                self.config.set_key('history_rates', 'unchecked')
                self.win.history_list.setHeaderLabels( [ '', '', _('Date'), _('Description') , _('Amount'), _('Balance')] )
                self.win.history_list.setColumnCount(6)

        def set_hist_check(hist_checkbox):
            cur_exchange = self.config.get('use_exchange', "BTC-e")
            hist_checkbox.setEnabled(cur_exchange in ["BitcoinVenezuela", "Kraken"])

        def set_currencies(combo):
            try:
                combo.blockSignals(True)
                current_currency = self.fiat_unit()
                combo.clear()
            except Exception:
                return
            combo.addItems(self.currencies)
            try:
                index = self.currencies.index(current_currency)
            except Exception:
                index = 0
                if len(self.currencies):
                    on_change(0)
            combo.blockSignals(False)
            combo.setCurrentIndex(index)

        def set_exchanges(combo_ex):
            try:
                combo_ex.clear()
            except Exception:
                return
            combo_ex.addItems(self.exchanges)
            try:
                index = self.exchanges.index(self.config.get('use_exchange', "BTC-e"))
            except Exception:
                index = 0
            combo_ex.setCurrentIndex(index)

        def ok_clicked():
            if self.config.get('use_exchange', "BTC-e") in ["CoinDesk", "itBit"]:
                self.timeout = 0
            d.accept();

        set_exchanges(combo_ex)
        set_currencies(combo)
        set_hist_check(hist_checkbox)
        combo.currentIndexChanged.connect(on_change)
        combo_ex.currentIndexChanged.connect(on_change_ex)
        hist_checkbox.stateChanged.connect(on_change_hist)
        combo.connect(self.win, SIGNAL('refresh_currencies_combo()'), lambda: set_currencies(combo))
        combo_ex.connect(d, SIGNAL('refresh_exchanges_combo()'), lambda: set_exchanges(combo_ex))
        ok_button.clicked.connect(lambda: ok_clicked())
        layout.addWidget(combo,1,1)
        layout.addWidget(combo_ex,0,1)
        layout.addWidget(hist_checkbox,2,1)
        layout.addWidget(ok_button,3,1)

        if d.exec_():
            return True
        else:
            return False

    def fiat_unit(self):
        return self.config.get("currency", "EUR")

    def refresh_fields(self):
        '''Update the display at the new rate'''
        for field in self.fields.values():
            field.textEdited.emit(field.text())

    def add_send_edit(self):
        self.send_fiat_e = AmountEdit(self.fiat_unit)
        btc_e = self.win.amount_e
        fee_e = self.win.fee_e
        self.connect_fields(btc_e, self.send_fiat_e, fee_e)
        self.win.send_grid.addWidget(self.send_fiat_e, 4, 3, Qt.AlignHCenter)
        btc_e.frozen.connect(lambda: self.send_fiat_e.setFrozen(btc_e.isReadOnly()))

    def add_receive_edit(self):
        self.receive_fiat_e = AmountEdit(self.fiat_unit)
        btc_e = self.win.receive_amount_e
        self.connect_fields(btc_e, self.receive_fiat_e, None)
        self.win.receive_grid.addWidget(self.receive_fiat_e, 2, 3, Qt.AlignHCenter)

    def connect_fields(self, btc_e, fiat_e, fee_e):
        def fiat_changed():
            fiat_e.setStyleSheet(BLACK_FG)
            self.fields[(fiat_e, btc_e)] = fiat_e
            try:
                fiat_amount = Decimal(str(fiat_e.text()))
            except:
                btc_e.setText("")
                if fee_e: fee_e.setText("")
                return
            exchange_rate = self.exchanger.exchange(Decimal("1.0"), self.fiat_unit())
            if exchange_rate is not None:
                btc_amount = fiat_amount/exchange_rate
                btc_e.setAmount(int(btc_amount*Decimal(COIN)))
                btc_e.setStyleSheet(BLUE_FG)
                if fee_e: self.win.update_fee()
        fiat_e.textEdited.connect(fiat_changed)
        def btc_changed():
            btc_e.setStyleSheet(BLACK_FG)
            self.fields[(fiat_e, btc_e)] = btc_e
            if self.exchanger is None:
                return
            btc_amount = btc_e.get_amount()
            if btc_amount is None:
                fiat_e.setText("")
                return
            fiat_amount = self.exchanger.exchange(Decimal(btc_amount)/Decimal(COIN), self.fiat_unit())
            if fiat_amount is not None:
                pos = fiat_e.cursorPosition()
                fiat_e.setText("%.2f"%fiat_amount)
                fiat_e.setCursorPosition(pos)
                fiat_e.setStyleSheet(BLUE_FG)
        btc_e.textEdited.connect(btc_changed)
        self.fields[(fiat_e, btc_e)] = btc_e

    @hook
    def do_clear(self):
        self.send_fiat_e.setText('')
Пример #11
0
class Plugin(BasePlugin):

    def fullname(self):
        return "Exchange rates"

    def description(self):
        return """exchange rates, retrieved from BTC-e and other market exchanges"""


    def __init__(self,a,b):
        BasePlugin.__init__(self,a,b)
        self.currencies = [self.fiat_unit()]
        self.exchanges = [self.config.get('use_exchange', "BTC-e")]
        self.exchanger = None

    @hook
    def init_qt(self, gui):
        self.gui = gui
        self.win = self.gui.main_window
        self.win.connect(self.win, SIGNAL("refresh_currencies()"), self.win.update_status)
        self.btc_rate = Decimal("0.0")
        if self.exchanger is None:
            # Do price discovery
            self.exchanger = Exchanger(self)
            self.exchanger.start()
            self.gui.exchanger = self.exchanger #
            self.add_fiat_edit()
            self.win.update_status()

    def close(self):
        self.exchanger.stop()
        self.exchanger = None
        self.win.tabs.removeTab(1)
        self.win.tabs.insertTab(1, self.win.create_send_tab(), _('Send'))
        self.win.update_status()

    def set_currencies(self, currency_options):
        self.currencies = sorted(currency_options)
        self.win.emit(SIGNAL("refresh_currencies()"))
        self.win.emit(SIGNAL("refresh_currencies_combo()"))

    @hook
    def get_fiat_balance_text(self, btc_balance, r):
        # return balance as: 1.23 USD
        r[0] = self.create_fiat_balance_text(Decimal(btc_balance) / 100000000)

    def get_fiat_price_text(self, r):
        # return BTC price as: 123.45 USD
        r[0] = self.create_fiat_balance_text(1)
        quote = r[0]
        if quote:
            r[0] = "%s"%quote

    @hook
    def get_fiat_status_text(self, btc_balance, r2):
        # return status as:   (1.23 USD)    1 BTC~123.45 USD
        text = ""
        r = {}
        self.get_fiat_price_text(r)
        quote = r.get(0)
        if quote:
            price_text = "1 LTC~%s"%quote
            fiat_currency = quote[-3:]
            btc_price = self.btc_rate
            fiat_balance = Decimal(btc_price) * (Decimal(btc_balance)/100000000)
            balance_text = "(%.2f %s)" % (fiat_balance,fiat_currency)
            text = "  " + balance_text + "     " + price_text + " "
        r2[0] = text

    def create_fiat_balance_text(self, btc_balance):
        quote_currency = self.fiat_unit()
        self.exchanger.use_exchange = self.config.get("use_exchange", "BTC-e")
        cur_rate = self.exchanger.exchange(Decimal("1.0"), quote_currency)
        if cur_rate is None:
            quote_text = ""
        else:
            quote_balance = btc_balance * Decimal(cur_rate)
            self.btc_rate = cur_rate
            quote_text = "%.2f %s" % (quote_balance, quote_currency)
        return quote_text

    @hook
    def load_wallet(self, wallet):
        self.wallet = wallet
        tx_list = {}
        for item in self.wallet.get_tx_history(self.wallet.storage.get("current_account", None)):
            tx_hash, conf, is_mine, value, fee, balance, timestamp = item
            tx_list[tx_hash] = {'value': value, 'timestamp': timestamp, 'balance': balance}

        self.tx_list = tx_list


    def requires_settings(self):
        return True


    @hook
    def history_tab_update(self):
        if self.config.get('history_rates', 'unchecked') == "checked":
            cur_exchange = self.config.get('use_exchange', "BTC-e")
            try:
                tx_list = self.tx_list
            except Exception:
                return

            try:
                mintimestr = datetime.datetime.fromtimestamp(int(min(tx_list.items(), key=lambda x: x[1]['timestamp'])[1]['timestamp'])).strftime('%Y-%m-%d')
            except Exception:
                return
            maxtimestr = datetime.datetime.now().strftime('%Y-%m-%d')

            if cur_exchange == "CoinDesk":
                try:
                    resp_hist = self.exchanger.get_json('api.coindesk.com', "/v1/bpi/historical/close.json?start=" + mintimestr + "&end=" + maxtimestr)
                except Exception:
                    return
            elif cur_exchange == "Winkdex":
                try:
                    resp_hist = self.exchanger.get_json('winkdex.com', "/api/v0/series?start_time=1342915200")['series'][0]['results']
                except Exception:
                    return
            elif cur_exchange == "BitcoinVenezuela":
                cur_currency = self.fiat_unit()
                if cur_currency in ("ARS", "EUR", "USD", "VEF"):
                    try:
                        resp_hist = self.exchanger.get_json('api.bitcoinvenezuela.com', "/historical/index.php?coin=LTC")[cur_currency + '_LTC']
                    except Exception:
                        return
                else:
                    return
            elif cur_exchange == "Kraken":
                cur_currency = self.fiat_unit()
                if cur_currency in ("EUR", "USD"):
                    try:
                        resp_hist = self.exchanger.get_json('api.kraken.com', "https://api.kraken.com/0/public/OHLC?pair=LTC"+cur_currency+"&interval=1440")['result']['XLTCZ'+cur_currency]
                        resp_hist = dict([(t[0], t[4]) for t in resp_hist])
                    except Exception:
                        return
                else:
                    return

            self.gui.main_window.is_edit = True
            self.gui.main_window.history_list.setColumnCount(6)
            self.gui.main_window.history_list.setHeaderLabels( [ '', _('Date'), _('Description') , _('Amount'), _('Balance'), _('Fiat Amount')] )
            root = self.gui.main_window.history_list.invisibleRootItem()
            childcount = root.childCount()
            for i in range(childcount):
                item = root.child(i)
                try:
                    tx_info = tx_list[str(item.data(0, Qt.UserRole).toPyObject())]
                except Exception:
                    newtx = self.wallet.get_tx_history()
                    v = newtx[[x[0] for x in newtx].index(str(item.data(0, Qt.UserRole).toPyObject()))][3]

                    tx_info = {'timestamp':int(time.time()), 'value': v }
                    pass
                tx_time = int(tx_info['timestamp'])
                if cur_exchange == "CoinDesk":
                    tx_time_str = datetime.datetime.fromtimestamp(tx_time).strftime('%Y-%m-%d')
                    try:
                        tx_USD_val = "%.2f %s" % (Decimal(str(tx_info['value'])) / 100000000 * Decimal(resp_hist['bpi'][tx_time_str]), "USD")
                    except KeyError:
                        tx_USD_val = "%.2f %s" % (self.btc_rate * Decimal(str(tx_info['value']))/100000000 , "USD")
                elif cur_exchange == "Winkdex":
                    tx_time_str = datetime.datetime.fromtimestamp(tx_time).strftime('%Y-%m-%d') + "T16:00:00-04:00"
                    try:
                        tx_rate = resp_hist[[x['timestamp'] for x in resp_hist].index(tx_time_str)]['price']
                        tx_USD_val = "%.2f %s" % (Decimal(tx_info['value']) / 100000000 * Decimal(tx_rate)/Decimal("100.0"), "USD")
                    except ValueError:
                        tx_USD_val = "%.2f %s" % (self.btc_rate * Decimal(tx_info['value'])/100000000 , "USD")
                    except KeyError:
                        tx_USD_val = _("No data")
                elif cur_exchange == "BitcoinVenezuela":
                    tx_time_str = datetime.datetime.fromtimestamp(tx_time).strftime('%Y-%m-%d')
                    try:
                        num = resp_hist[tx_time_str].replace(',','')
                        tx_BTCVEN_val = "%.2f %s" % (Decimal(str(tx_info['value'])) / 100000000 * Decimal(num), cur_currency)
                    except KeyError:
                        tx_BTCVEN_val = _("No data")
                elif cur_exchange == "Kraken":
                    tx_day_time = int(tx_time / 86400) * 86400
                    try:
                        num = resp_hist[tx_day_time]
                        tx_KRAKEN_val = "%.2f %s" % (Decimal(str(tx_info['value'])) / 100000000 * Decimal(num), cur_currency)
                    except KeyError:
                        tx_KRAKEN_val = _("No data")

                if cur_exchange in ["CoinDesk", "Winkdex"]:
                    item.setText(5, tx_USD_val)
                elif cur_exchange == "BitcoinVenezuela":
                    item.setText(5, tx_BTCVEN_val)
                elif cur_exchange == "Kraken":
                    item.setText(5, tx_KRAKEN_val)
                if Decimal(str(tx_info['value'])) < 0:
                    item.setForeground(5, QBrush(QColor("#BC1E1E")))

            for i, width in enumerate(self.gui.main_window.column_widths['history']):
                self.gui.main_window.history_list.setColumnWidth(i, width)
            self.gui.main_window.history_list.setColumnWidth(4, 140)
            self.gui.main_window.history_list.setColumnWidth(5, 120)
            self.gui.main_window.is_edit = False


    def settings_widget(self, window):
        return EnterButton(_('Settings'), self.settings_dialog)

    def settings_dialog(self):
        d = QDialog()
        d.setWindowTitle("Settings")
        layout = QGridLayout(d)
        layout.addWidget(QLabel(_('Exchange rate API: ')), 0, 0)
        layout.addWidget(QLabel(_('Currency: ')), 1, 0)
        layout.addWidget(QLabel(_('History Rates: ')), 2, 0)
        combo = QComboBox()
        combo_ex = QComboBox()
        hist_checkbox = QCheckBox()
        hist_checkbox.setEnabled(False)
        hist_checkbox.setChecked(self.config.get('history_rates', 'unchecked') != 'unchecked')
        ok_button = QPushButton(_("OK"))

        def on_change(x):
            try:
                cur_request = str(self.currencies[x])
            except Exception:
                return
            if cur_request != self.fiat_unit():
                self.config.set_key('currency', cur_request, True)
                cur_exchange = self.config.get('use_exchange', "BTC-e")
                if (cur_exchange, cur_request) in EXCH_SUPPORT_HIST:
                    hist_checkbox.setEnabled(True)
                else:
                    disable_check()
                self.win.update_status()
                try:
                    self.fiat_button
                except:
                    pass
                else:
                    self.fiat_button.setText(cur_request)

        def disable_check():
            hist_checkbox.setChecked(False)
            hist_checkbox.setEnabled(False)

        def on_change_ex(x):
            cur_request = str(self.exchanges[x])
            if cur_request != self.config.get('use_exchange', "BTC-e"):
                self.config.set_key('use_exchange', cur_request, True)
                self.currencies = []
                combo.clear()
                self.exchanger.query_rates.set()
                cur_currency = self.fiat_unit()
                if (cur_request, cur_currency) in EXCH_SUPPORT_HIST:
                    hist_checkbox.setEnabled(True)
                else:
                    disable_check()
                set_currencies(combo)
                self.win.update_status()

        def on_change_hist(checked):
            if checked:
                self.config.set_key('history_rates', 'checked')
                self.history_tab_update()
            else:
                self.config.set_key('history_rates', 'unchecked')
                self.gui.main_window.history_list.setHeaderLabels( [ '', _('Date'), _('Description') , _('Amount'), _('Balance')] )
                self.gui.main_window.history_list.setColumnCount(5)
                for i,width in enumerate(self.gui.main_window.column_widths['history']):
                    self.gui.main_window.history_list.setColumnWidth(i, width)

        def set_hist_check(hist_checkbox):
            cur_exchange = self.config.get('use_exchange', "BTC-e")
            hist_checkbox.setEnabled(cur_exchange in ["BitcoinVenezuela", "Kraken"])

        def set_currencies(combo):
            try:
                combo.blockSignals(True)
                current_currency = self.fiat_unit()
                combo.clear()
            except Exception:
                return
            combo.addItems(self.currencies)
            try:
                index = self.currencies.index(current_currency)
            except Exception:
                index = 0
                if len(self.currencies):
                    on_change(0)
            combo.blockSignals(False)
            combo.setCurrentIndex(index)

        def set_exchanges(combo_ex):
            try:
                combo_ex.clear()
            except Exception:
                return
            combo_ex.addItems(self.exchanges)
            try:
                index = self.exchanges.index(self.config.get('use_exchange', "BTC-e"))
            except Exception:
                index = 0
            combo_ex.setCurrentIndex(index)

        def ok_clicked():
            if self.config.get('use_exchange', "BTC-e") in ["CoinDesk", "itBit"]:
                self.exchanger.query_rates.set()
            d.accept();

        set_exchanges(combo_ex)
        set_currencies(combo)
        set_hist_check(hist_checkbox)
        combo.currentIndexChanged.connect(on_change)
        combo_ex.currentIndexChanged.connect(on_change_ex)
        hist_checkbox.stateChanged.connect(on_change_hist)
        combo.connect(self.win, SIGNAL('refresh_currencies_combo()'), lambda: set_currencies(combo))
        combo_ex.connect(d, SIGNAL('refresh_exchanges_combo()'), lambda: set_exchanges(combo_ex))
        ok_button.clicked.connect(lambda: ok_clicked())
        layout.addWidget(combo,1,1)
        layout.addWidget(combo_ex,0,1)
        layout.addWidget(hist_checkbox,2,1)
        layout.addWidget(ok_button,3,1)

        if d.exec_():
            return True
        else:
            return False

    def fiat_unit(self):
        return self.config.get("currency", "EUR")

    def add_fiat_edit(self):
        self.fiat_e = AmountEdit(self.fiat_unit)
        self.btc_e = self.win.amount_e
        grid = self.btc_e.parent()
        def fiat_changed():
            try:
                fiat_amount = Decimal(str(self.fiat_e.text()))
            except:
                self.btc_e.setText("")
                return
            exchange_rate = self.exchanger.exchange(Decimal("1.0"), self.fiat_unit())
            if exchange_rate is not None:
                btc_amount = fiat_amount/exchange_rate
                self.btc_e.setAmount(int(btc_amount*Decimal(100000000)))
        self.fiat_e.textEdited.connect(fiat_changed)
        def btc_changed():
            btc_amount = self.btc_e.get_amount()
            if btc_amount is None:
                self.fiat_e.setText("")
                return
            fiat_amount = self.exchanger.exchange(Decimal(btc_amount)/Decimal(100000000), self.fiat_unit())
            if fiat_amount is not None:
                self.fiat_e.setText("%.2f"%fiat_amount)
        self.btc_e.textEdited.connect(btc_changed)
        self.btc_e.frozen.connect(lambda: self.fiat_e.setFrozen(self.btc_e.isReadOnly()))
        self.win.send_grid.addWidget(self.fiat_e, 4, 3, Qt.AlignHCenter)
Пример #12
0
 def add_receive_edit(self):
     self.receive_fiat_e = AmountEdit(self.fiat_unit)
     btc_e = self.win.receive_amount_e
     self.connect_fields(btc_e, self.receive_fiat_e, None)
     self.win.receive_grid.addWidget(self.receive_fiat_e, 2, 3,
                                     Qt.AlignHCenter)
Пример #13
0
class Plugin(BasePlugin):
    def __init__(self, a, b):
        BasePlugin.__init__(self, a, b)
        self.currencies = [self.fiat_unit()]
        self.exchanges = [self.config.get('use_exchange', "BTC-e")]
        # Do price discovery
        self.exchanger = Exchanger(self)
        self.exchanger.start()
        self.win = None

    @hook
    def init_qt(self, gui):
        self.gui = gui
        self.win = self.gui.main_window
        self.win.connect(self.win, SIGNAL("refresh_currencies()"),
                         self.win.update_status)
        self.btc_rate = Decimal("0.0")
        self.resp_hist = {}
        self.tx_list = {}
        self.gui.exchanger = self.exchanger  #
        self.add_send_edit()
        self.add_receive_edit()
        self.win.update_status()

    def close(self):
        BasePlugin.close(self)
        self.exchanger.stop()
        self.exchanger = None
        self.gui.exchanger = None
        self.send_fiat_e.hide()
        self.receive_fiat_e.hide()
        self.win.update_status()

    def set_currencies(self, currency_options):
        self.currencies = sorted(currency_options)
        if self.win:
            self.win.emit(SIGNAL("refresh_currencies()"))
            self.win.emit(SIGNAL("refresh_currencies_combo()"))

    @hook
    def get_fiat_balance_text(self, btc_balance, r):
        # return balance as: 1.23 USD
        r[0] = self.create_fiat_balance_text(Decimal(btc_balance) / 100000000)

    def get_fiat_price_text(self, r):
        # return BTC price as: 123.45 USD
        r[0] = self.create_fiat_balance_text(1)
        quote = r[0]
        if quote:
            r[0] = "%s" % quote

    @hook
    def get_fiat_status_text(self, btc_balance, r2):
        # return status as:   (1.23 USD)    1 BTC~123.45 USD
        text = ""
        r = {}
        self.get_fiat_price_text(r)
        quote = r.get(0)
        if quote:
            price_text = "1 PRUX~%s" % quote
            fiat_currency = quote[-3:]
            btc_price = self.btc_rate
            fiat_balance = Decimal(btc_price) * (Decimal(btc_balance) /
                                                 100000000)
            balance_text = "(%.2f %s)" % (fiat_balance, fiat_currency)
            text = "  " + balance_text + "     " + price_text + " "
        r2[0] = text

    def create_fiat_balance_text(self, btc_balance):
        quote_currency = self.fiat_unit()
        self.exchanger.use_exchange = self.config.get("use_exchange", "BTC-e")
        cur_rate = self.exchanger.exchange(Decimal("1.0"), quote_currency)
        if cur_rate is None:
            quote_text = ""
        else:
            quote_balance = btc_balance * Decimal(cur_rate)
            self.btc_rate = cur_rate
            quote_text = "%.2f %s" % (quote_balance, quote_currency)
        return quote_text

    @hook
    def load_wallet(self, wallet):
        tx_list = {}
        for item in self.wallet.get_history(
                self.wallet.storage.get("current_account", None)):
            tx_hash, conf, value, timestamp, balance = item
            tx_list[tx_hash] = {'value': value, 'timestamp': timestamp}

        self.tx_list = tx_list
        self.cur_exchange = self.config.get('use_exchange', "BTC-e")
        t = threading.Thread(target=self.request_history_rates, args=())
        t.setDaemon(True)
        t.start()

    def requires_settings(self):
        return True

    def request_history_rates(self):
        if self.config.get('history_rates') != "checked":
            return
        if not self.tx_list:
            return

        try:
            mintimestr = datetime.datetime.fromtimestamp(
                int(
                    min(self.tx_list.items(), key=lambda x: x[1]['timestamp'])
                    [1]['timestamp'])).strftime('%Y-%m-%d')
        except Exception:
            return
        maxtimestr = datetime.datetime.now().strftime('%Y-%m-%d')

        if self.cur_exchange == "CoinDesk":
            try:
                self.resp_hist = self.exchanger.get_json(
                    'api.coindesk.com',
                    "/v1/bpi/historical/close.json?start=" + mintimestr +
                    "&end=" + maxtimestr)
            except Exception:
                return
        elif self.cur_exchange == "Winkdex":
            try:
                self.resp_hist = self.exchanger.get_json(
                    'winkdex.com', "/api/v0/series?start_time=1342915200"
                )['series'][0]['results']
            except Exception:
                return
        elif self.cur_exchange == "BitcoinVenezuela":
            cur_currency = self.fiat_unit()
            if cur_currency in ("ARS", "EUR", "USD", "VEF"):
                try:
                    self.resp_hist = self.exchanger.get_json(
                        'api.bitcoinvenezuela.com',
                        "/historical/index.php?coin=PRUX")[cur_currency +
                                                           '_LTC']
                except Exception:
                    return
            else:
                return
        elif self.cur_exchange == "Kraken":
            cur_currency = self.fiat_unit()
            if cur_currency in ("EUR", "USD"):
                try:
                    self.resp_hist = self.exchanger.get_json(
                        'api.kraken.com',
                        "https://api.kraken.com/0/public/OHLC?pair=PRUX" +
                        cur_currency +
                        "&interval=1440")['result']['XLTCZ' + cur_currency]
                    self.resp_hist = dict([(t[0], t[4])
                                           for t in self.resp_hist])
                except Exception:
                    return
            else:
                return

        self.win.need_update.set()

    @hook
    def history_tab_update(self):
        if self.config.get('history_rates') != "checked":
            return
        if not self.resp_hist:
            return
        if not self.wallet:
            return

        self.win.is_edit = True
        self.win.history_list.setColumnCount(6)
        self.win.history_list.setHeaderLabels([
            '',
            _('Date'),
            _('Description'),
            _('Amount'),
            _('Balance'),
            _('Fiat Amount')
        ])
        root = self.win.history_list.invisibleRootItem()
        childcount = root.childCount()
        for i in range(childcount):
            item = root.child(i)
            try:
                tx_info = self.tx_list[str(
                    item.data(0, Qt.UserRole).toPyObject())]
            except Exception:
                newtx = self.wallet.get_history()
                v = newtx[[x[0] for x in newtx].index(
                    str(item.data(0, Qt.UserRole).toPyObject()))][2]
                tx_info = {'timestamp': int(time.time()), 'value': v}
                pass
            tx_time = int(tx_info['timestamp'])
            tx_value = Decimal(str(tx_info['value'])) / 100000000
            if self.cur_exchange == "CoinDesk":
                tx_time_str = datetime.datetime.fromtimestamp(
                    tx_time).strftime('%Y-%m-%d')
                try:
                    tx_fiat_val = "%.2f %s" % (tx_value * Decimal(
                        self.resp_hist['bpi'][tx_time_str]), "USD")
                except KeyError:
                    tx_fiat_val = "%.2f %s" % (self.btc_rate * Decimal(
                        str(tx_info['value'])) / 100000000, "USD")
            elif self.cur_exchange == "Winkdex":
                tx_time_str = datetime.datetime.fromtimestamp(
                    tx_time).strftime('%Y-%m-%d') + "T16:00:00-04:00"
                try:
                    tx_rate = self.resp_hist[[
                        x['timestamp'] for x in self.resp_hist
                    ].index(tx_time_str)]['price']
                    tx_fiat_val = "%.2f %s" % (tx_value * Decimal(tx_rate) /
                                               Decimal("100.0"), "USD")
                except ValueError:
                    tx_fiat_val = "%.2f %s" % (self.btc_rate * Decimal(
                        tx_info['value']) / 100000000, "USD")
                except KeyError:
                    tx_fiat_val = _("No data")
            elif self.cur_exchange == "BitcoinVenezuela":
                tx_time_str = datetime.datetime.fromtimestamp(
                    tx_time).strftime('%Y-%m-%d')
                try:
                    num = self.resp_hist[tx_time_str].replace(',', '')
                    tx_fiat_val = "%.2f %s" % (tx_value * Decimal(num),
                                               self.fiat_unit())
                except KeyError:
                    tx_fiat_val = _("No data")
            elif self.cur_exchange == "Kraken":
                tx_day_time = int(tx_time / 86400) * 86400
                try:
                    num = self.resp_hist[tx_day_time]
                    tx_fiat_val = "%.2f %s" % (Decimal(str(tx_info['value'])) /
                                               100000000 * Decimal(num),
                                               self.fiat_unit())
                except KeyError:
                    tx_fiat_val = _("No data")
            tx_fiat_val = " " * (12 - len(tx_fiat_val)) + tx_fiat_val
            item.setText(5, tx_fiat_val)
            item.setFont(5, QFont(MONOSPACE_FONT))
            if Decimal(str(tx_info['value'])) < 0:
                item.setForeground(5, QBrush(QColor("#BC1E1E")))

        self.win.history_list.setColumnWidth(5, 120)
        self.win.is_edit = False

    def settings_widget(self, window):
        return EnterButton(_('Settings'), self.settings_dialog)

    def settings_dialog(self):
        d = QDialog()
        d.setWindowTitle("Settings")
        layout = QGridLayout(d)
        layout.addWidget(QLabel(_('Exchange rate API: ')), 0, 0)
        layout.addWidget(QLabel(_('Currency: ')), 1, 0)
        layout.addWidget(QLabel(_('History Rates: ')), 2, 0)
        combo = QComboBox()
        combo_ex = QComboBox()
        hist_checkbox = QCheckBox()
        hist_checkbox.setEnabled(False)
        hist_checkbox.setChecked(
            self.config.get('history_rates', 'unchecked') != 'unchecked')
        ok_button = QPushButton(_("OK"))

        def on_change(x):
            try:
                cur_request = str(self.currencies[x])
            except Exception:
                return
            if cur_request != self.fiat_unit():
                self.config.set_key('currency', cur_request, True)
                cur_exchange = self.config.get('use_exchange', "BTC-e")
                if (cur_exchange, cur_request) in EXCH_SUPPORT_HIST:
                    hist_checkbox.setEnabled(True)
                else:
                    disable_check()
                self.win.update_status()
                try:
                    self.fiat_button
                except:
                    pass
                else:
                    self.fiat_button.setText(cur_request)

        def disable_check():
            hist_checkbox.setChecked(False)
            hist_checkbox.setEnabled(False)

        def on_change_ex(x):
            cur_request = str(self.exchanges[x])
            if cur_request != self.config.get('use_exchange', "BTC-e"):
                self.config.set_key('use_exchange', cur_request, True)
                self.currencies = []
                combo.clear()
                self.exchanger.query_rates.set()
                cur_currency = self.fiat_unit()
                if (cur_request, cur_currency) in EXCH_SUPPORT_HIST:
                    hist_checkbox.setEnabled(True)
                else:
                    disable_check()
                set_currencies(combo)
                self.win.update_status()

        def on_change_hist(checked):
            if checked:
                self.config.set_key('history_rates', 'checked')
                self.request_history_rates()
            else:
                self.config.set_key('history_rates', 'unchecked')
                self.win.history_list.setHeaderLabels([
                    '',
                    _('Date'),
                    _('Description'),
                    _('Amount'),
                    _('Balance')
                ])
                self.win.history_list.setColumnCount(5)

        def set_hist_check(hist_checkbox):
            cur_exchange = self.config.get('use_exchange', "BTC-e")
            hist_checkbox.setEnabled(
                cur_exchange in ["BitcoinVenezuela", "Kraken"])

        def set_currencies(combo):
            try:
                combo.blockSignals(True)
                current_currency = self.fiat_unit()
                combo.clear()
            except Exception:
                return
            combo.addItems(self.currencies)
            try:
                index = self.currencies.index(current_currency)
            except Exception:
                index = 0
                if len(self.currencies):
                    on_change(0)
            combo.blockSignals(False)
            combo.setCurrentIndex(index)

        def set_exchanges(combo_ex):
            try:
                combo_ex.clear()
            except Exception:
                return
            combo_ex.addItems(self.exchanges)
            try:
                index = self.exchanges.index(
                    self.config.get('use_exchange', "BTC-e"))
            except Exception:
                index = 0
            combo_ex.setCurrentIndex(index)

        def ok_clicked():
            if self.config.get('use_exchange',
                               "BTC-e") in ["CoinDesk", "itBit"]:
                self.exchanger.query_rates.set()
            d.accept()

        set_exchanges(combo_ex)
        set_currencies(combo)
        set_hist_check(hist_checkbox)
        combo.currentIndexChanged.connect(on_change)
        combo_ex.currentIndexChanged.connect(on_change_ex)
        hist_checkbox.stateChanged.connect(on_change_hist)
        combo.connect(self.win, SIGNAL('refresh_currencies_combo()'),
                      lambda: set_currencies(combo))
        combo_ex.connect(d, SIGNAL('refresh_exchanges_combo()'),
                         lambda: set_exchanges(combo_ex))
        ok_button.clicked.connect(lambda: ok_clicked())
        layout.addWidget(combo, 1, 1)
        layout.addWidget(combo_ex, 0, 1)
        layout.addWidget(hist_checkbox, 2, 1)
        layout.addWidget(ok_button, 3, 1)

        if d.exec_():
            return True
        else:
            return False

    def fiat_unit(self):
        return self.config.get("currency", "EUR")

    def add_send_edit(self):
        self.send_fiat_e = AmountEdit(self.fiat_unit)
        btc_e = self.win.amount_e
        fee_e = self.win.fee_e
        self.connect_fields(btc_e, self.send_fiat_e, fee_e)
        self.win.send_grid.addWidget(self.send_fiat_e, 4, 3, Qt.AlignHCenter)
        btc_e.frozen.connect(
            lambda: self.send_fiat_e.setFrozen(btc_e.isReadOnly()))

    def add_receive_edit(self):
        self.receive_fiat_e = AmountEdit(self.fiat_unit)
        btc_e = self.win.receive_amount_e
        self.connect_fields(btc_e, self.receive_fiat_e, None)
        self.win.receive_grid.addWidget(self.receive_fiat_e, 2, 3,
                                        Qt.AlignHCenter)

    def connect_fields(self, btc_e, fiat_e, fee_e):
        def fiat_changed():
            try:
                fiat_amount = Decimal(str(fiat_e.text()))
            except:
                btc_e.setText("")
                if fee_e: fee_e.setText("")
                return
            exchange_rate = self.exchanger.exchange(Decimal("1.0"),
                                                    self.fiat_unit())
            if exchange_rate is not None:
                btc_amount = fiat_amount / exchange_rate
                btc_e.setAmount(int(btc_amount * Decimal(100000000)))
                if fee_e: self.win.update_fee(False)

        fiat_e.textEdited.connect(fiat_changed)

        def btc_changed():
            if self.exchanger is None:
                return
            btc_amount = btc_e.get_amount()
            if btc_amount is None:
                fiat_e.setText("")
                return
            fiat_amount = self.exchanger.exchange(
                Decimal(btc_amount) / Decimal(100000000), self.fiat_unit())
            if fiat_amount is not None:
                pos = fiat_e.cursorPosition()
                fiat_e.setText("%.2f" % fiat_amount)
                fiat_e.setCursorPosition(pos)

        btc_e.textEdited.connect(btc_changed)