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)
Esempio n. 2
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.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)
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")]

    def init(self):
        self.win = self.gui.main_window
        self.win.connect(self.win, SIGNAL("refresh_currencies()"),
                         self.win.update_status)
        self.btc_rate = Decimal("0.0")
        # Do price discovery
        self.exchanger = Exchanger(self)
        self.exchanger.start()
        self.gui.exchanger = self.exchanger  #
        self.add_fiat_edit()

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

    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

    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 VIA~%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

    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

    def toggle(self):
        enabled = BasePlugin.toggle(self)
        self.win.update_status()
        self.win.tabs.removeTab(1)
        new_send_tab = self.gui.main_window.create_send_tab()
        self.win.tabs.insertTab(1, new_send_tab, _('Send'))
        if enabled:
            self.add_fiat_edit()
        return enabled

    def close(self):
        self.exchanger.stop()

    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',
                        "/static/data/0_86400_730.json")['prices']
                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=VIA")[cur_currency +
                                                              '_VIA']
                    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 = int(tx_time) - (int(tx_time) %
                                                  (60 * 60 * 24))
                    try:
                        tx_rate = resp_hist[[x['x'] for x in resp_hist
                                             ].index(tx_time_str)]['y']
                        tx_USD_val = "%.2f %s" % (Decimal(tx_info['value']) /
                                                  100000000 * Decimal(tx_rate),
                                                  "USD")
                    except ValueError:
                        tx_USD_val = "%.2f %s" % (self.btc_rate * Decimal(
                            tx_info['value']) / 100000000, "USD")
                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")

                if cur_exchange == "CoinDesk" or cur_exchange == "Winkdex":
                    item.setText(5, tx_USD_val)
                elif cur_exchange == "BitcoinVenezuela":
                    item.setText(5, tx_BTCVEN_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)
        if self.config.get('history_rates', 'unchecked') == 'unchecked':
            hist_checkbox.setChecked(False)
        else:
            hist_checkbox.setChecked(True)
        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_request == "USD" and (cur_exchange == "CoinDesk"
                                             or cur_exchange == "Winkdex"):
                    hist_checkbox.setEnabled(True)
                elif cur_request in ("ARS", "EUR", "USD",
                                     "VEF") and (cur_exchange
                                                 == "BitcoinVenezuela"):
                    hist_checkbox.setEnabled(True)
                else:
                    hist_checkbox.setChecked(False)
                    hist_checkbox.setEnabled(False)
                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 == "CoinDesk" or cur_request == "Winkdex":
                    if cur_currency == "USD":
                        hist_checkbox.setEnabled(True)
                    else:
                        disable_check()
                elif cur_request == "BitcoinVenezuela":
                    if cur_currency in ("ARS", "EUR", "USD", "VEF"):
                        hist_checkbox.setEnabled(True)
                    else:
                        disable_check()
                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")
            if cur_exchange == "CoinDesk" or cur_exchange == "Winkdex":
                hist_checkbox.setEnabled(True)
            elif cur_exchange == "BitcoinVenezuela":
                hist_checkbox.setEnabled(True)
            else:
                hist_checkbox.setEnabled(False)

        def set_currencies(combo):
            current_currency = self.fiat_unit()
            try:
                combo.clear()
            except Exception:
                return
            combo.addItems(self.currencies)
            try:
                index = self.currencies.index(current_currency)
            except Exception:
                index = 0
            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():
            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)
Esempio n. 4
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")]

    def init(self):
        self.win = self.gui.main_window
        self.win.connect(self.win, SIGNAL("refresh_currencies()"), self.win.update_status)
        self.btc_rate = Decimal("0.0")
        # Do price discovery
        self.exchanger = Exchanger(self)
        self.exchanger.start()
        self.gui.exchanger = self.exchanger #
        self.add_fiat_edit()

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

    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

    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 VIA~%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

    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


    def toggle(self):
        enabled = BasePlugin.toggle(self)
        self.win.update_status()
        self.win.tabs.removeTab(1)
        new_send_tab = self.gui.main_window.create_send_tab()
        self.win.tabs.insertTab(1, new_send_tab, _('Send'))
        if enabled:
            self.add_fiat_edit()
        return enabled


    def close(self):
        self.exchanger.stop()

    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', "/static/data/0_86400_730.json")['prices']
                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=VIA")[cur_currency + '_VIA']
                    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 = int(tx_time) - (int(tx_time) % (60 * 60 * 24))
                    try:
                        tx_rate = resp_hist[[x['x'] for x in resp_hist].index(tx_time_str)]['y']
                        tx_USD_val = "%.2f %s" % (Decimal(tx_info['value']) / 100000000 * Decimal(tx_rate), "USD")
                    except ValueError:
                        tx_USD_val = "%.2f %s" % (self.btc_rate * Decimal(tx_info['value'])/100000000 , "USD")
                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")

                if cur_exchange == "CoinDesk" or cur_exchange == "Winkdex":
                    item.setText(5, tx_USD_val)
                elif cur_exchange == "BitcoinVenezuela":
                    item.setText(5, tx_BTCVEN_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)
        if self.config.get('history_rates', 'unchecked') == 'unchecked':
            hist_checkbox.setChecked(False)
        else:
            hist_checkbox.setChecked(True)
        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_request == "USD" and (cur_exchange == "CoinDesk" or cur_exchange == "Winkdex"):
                    hist_checkbox.setEnabled(True)
                elif cur_request in ("ARS", "EUR", "USD", "VEF") and (cur_exchange == "BitcoinVenezuela"):
                    hist_checkbox.setEnabled(True)
                else:
                    hist_checkbox.setChecked(False)
                    hist_checkbox.setEnabled(False)
                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 == "CoinDesk" or cur_request == "Winkdex":
                    if cur_currency == "USD":
                        hist_checkbox.setEnabled(True)
                    else:
                        disable_check()
                elif cur_request == "BitcoinVenezuela":
                    if cur_currency in ("ARS", "EUR", "USD", "VEF"):
                        hist_checkbox.setEnabled(True)
                    else:
                        disable_check()
                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")
            if cur_exchange == "CoinDesk" or cur_exchange == "Winkdex":
                hist_checkbox.setEnabled(True)
            elif cur_exchange == "BitcoinVenezuela":
                hist_checkbox.setEnabled(True)
            else:
                hist_checkbox.setEnabled(False)

        def set_currencies(combo):
            current_currency = self.fiat_unit()
            try:
                combo.clear()
            except Exception:
                return
            combo.addItems(self.currencies)
            try:
                index = self.currencies.index(current_currency)
            except Exception:
                index = 0
            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():
            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)