AmountEdit:get_amount
[electrum-nvc.git] / plugins / exchange_rate.py
index cf69bce..f8713a7 100644 (file)
@@ -1,15 +1,32 @@
 from PyQt4.QtGui import *
 from PyQt4.QtCore import *
 
+import datetime
 import decimal
 import httplib
 import json
 import threading
+import time
 import re
 from decimal import Decimal
 from electrum.plugins import BasePlugin
 from electrum.i18n import _
 from electrum_gui.qt.util import *
+from electrum_gui.qt.amountedit import AmountEdit
+
+
+EXCHANGES = ["BitcoinAverage",
+             "BitcoinVenezuela",
+             "Bitcurex",
+             "Bitmarket",
+             "BitPay",
+             "Blockchain",
+             "BTCChina",
+             "CaVirtEx",
+             "Coinbase",
+             "CoinDesk",
+             "LocalBitcoins",
+             "Winkdex"]
 
 
 class Exchanger(threading.Thread):
@@ -20,13 +37,30 @@ class Exchanger(threading.Thread):
         self.parent = parent
         self.quote_currencies = None
         self.lock = threading.Lock()
-        self.use_exchange = self.parent.config.get('use_exchange', "CoinDesk")
-        self.parent.exchanges = ["CoinDesk", "Blockchain"]
-        self.parent.currencies = ["EUR","GBP","USD"]
+        self.query_rates = threading.Event()
+        self.use_exchange = self.parent.config.get('use_exchange', "Blockchain")
+        self.parent.exchanges = EXCHANGES
+        self.parent.currencies = ["EUR","GBP","USD","PLN"]
         self.parent.win.emit(SIGNAL("refresh_exchanges_combo()"))
         self.parent.win.emit(SIGNAL("refresh_currencies_combo()"))
         self.is_running = False
 
+    def get_json(self, site, get_string):
+        try:
+            connection = httplib.HTTPSConnection(site)
+            connection.request("GET", get_string)
+        except Exception:
+            raise
+        resp = connection.getresponse()
+        if resp.reason == httplib.responses[httplib.NOT_FOUND]:
+            raise
+        try:
+            json_resp = json.loads(resp.read())
+        except Exception:
+            raise
+        return json_resp
+
+
     def exchange(self, btc_amount, quote_currency):
         with self.lock:
             if self.quote_currencies is None:
@@ -36,44 +70,47 @@ class Exchanger(threading.Thread):
             return None
         if self.use_exchange == "CoinDesk":
             try:
-                connection = httplib.HTTPSConnection('api.coindesk.com')
-                connection.request("GET", "/v1/bpi/currentprice/" + str(quote_currency) + ".json")
-            except Exception:
-                return
-            resp = connection.getresponse()
-            if resp.reason == httplib.responses[httplib.NOT_FOUND]:
-                return
-            try:
-                resp_rate = json.loads(resp.read())
+                resp_rate = self.get_json('api.coindesk.com', "/v1/bpi/currentprice/" + str(quote_currency) + ".json")
             except Exception:
                 return
             return btc_amount * decimal.Decimal(str(resp_rate["bpi"][str(quote_currency)]["rate_float"]))
-        return btc_amount * decimal.Decimal(quote_currencies[quote_currency])
+        return btc_amount * decimal.Decimal(str(quote_currencies[quote_currency]))
 
     def stop(self):
         self.is_running = False
 
+    def update_rate(self):
+        self.use_exchange = self.parent.config.get('use_exchange', "Blockchain")
+        update_rates = {
+            "BitcoinAverage": self.update_ba,
+            "BitcoinVenezuela": self.update_bv,
+            "Bitcurex": self.update_bx,
+            "Bitmarket": self.update_bm,
+            "BitPay": self.update_bp,
+            "Blockchain": self.update_bc,
+            "BTCChina": self.update_CNY,
+            "CaVirtEx": self.update_cv,
+            "CoinDesk": self.update_cd,
+            "Coinbase": self.update_cb,
+            "LocalBitcoins": self.update_lb,
+            "Winkdex": self.update_wd,
+        }
+        try:
+            update_rates[self.use_exchange]()
+        except KeyError:
+            return
+
     def run(self):
         self.is_running = True
         while self.is_running:
-            self.use_exchange = self.parent.config.get('use_exchange', "Blockchain")
-            if self.use_exchange == "Blockchain":
-                self.update_bc()
-            elif self.use_exchange == "CoinDesk":
-                self.update_cd()
-            time.sleep(150)
+            self.query_rates.clear()
+            self.update_rate()
+            self.query_rates.wait(150)
+
 
     def update_cd(self):
         try:
-            connection = httplib.HTTPSConnection('api.coindesk.com')
-            connection.request("GET", "/v1/bpi/supported-currencies.json")
-        except Exception:
-            return
-        response = connection.getresponse()
-        if response.reason == httplib.responses[httplib.NOT_FOUND]:
-            return
-        try:
-            resp_currencies = json.loads(response.read())
+            resp_currencies = self.get_json('api.coindesk.com', "/v1/bpi/supported-currencies.json")
         except Exception:
             return
 
@@ -84,24 +121,126 @@ class Exchanger(threading.Thread):
             self.quote_currencies = quote_currencies
         self.parent.set_currencies(quote_currencies)
 
+    def update_wd(self):
+        try:
+            winkresp = self.get_json('winkdex.com', "/static/data/0_600_288.json")
+            ####could need nonce value in GET, no Docs available
+        except Exception:
+            return
+        quote_currencies = {"USD": 0.0}
+        ####get y of highest x in "prices"
+        lenprices = len(winkresp["prices"])
+        usdprice = winkresp["prices"][lenprices-1]["y"]
+        try:
+            quote_currencies["USD"] = decimal.Decimal(str(usdprice))
+            with self.lock:
+                self.quote_currencies = quote_currencies
+        except KeyError:
+            pass
+        self.parent.set_currencies(quote_currencies)
 
-    def update_bc(self):
+    def update_cv(self):
         try:
-            connection = httplib.HTTPSConnection('blockchain.info')
-            connection.request("GET", "/ticker")
+            jsonresp = self.get_json('www.cavirtex.com', "/api/CAD/ticker.json")
         except Exception:
             return
-        response = connection.getresponse()
-        if response.reason == httplib.responses[httplib.NOT_FOUND]:
+        quote_currencies = {"CAD": 0.0}
+        cadprice = jsonresp["last"]
+        try:
+            quote_currencies["CAD"] = decimal.Decimal(str(cadprice))
+            with self.lock:
+                self.quote_currencies = quote_currencies
+        except KeyError:
+            pass
+        self.parent.set_currencies(quote_currencies)
+
+    def update_bm(self):
+        try:
+            jsonresp = self.get_json('www.bitmarket.pl', "/json/BTCPLN/ticker.json")
+        except Exception:
+            return
+        quote_currencies = {"PLN": 0.0}
+        pln_price = jsonresp["last"]
+        try:
+            quote_currencies["PLN"] = decimal.Decimal(str(pln_price))
+            with self.lock:
+                self.quote_currencies = quote_currencies
+        except KeyError:
+            pass
+        self.parent.set_currencies(quote_currencies)
+
+    def update_bx(self):
+        try:
+            jsonresp = self.get_json('pln.bitcurex.com', "/data/ticker.json")
+        except Exception:
+            return
+        quote_currencies = {"PLN": 0.0}
+        pln_price = jsonresp["last"]
+        try:
+            quote_currencies["PLN"] = decimal.Decimal(str(pln_price))
+            with self.lock:
+                self.quote_currencies = quote_currencies
+        except KeyError:
+            pass
+        self.parent.set_currencies(quote_currencies)
+
+    def update_CNY(self):
+        try:
+            jsonresp = self.get_json('data.btcchina.com', "/data/ticker")
+        except Exception:
             return
+        quote_currencies = {"CNY": 0.0}
+        cnyprice = jsonresp["ticker"]["last"]
+        try:
+            quote_currencies["CNY"] = decimal.Decimal(str(cnyprice))
+            with self.lock:
+                self.quote_currencies = quote_currencies
+        except KeyError:
+            pass
+        self.parent.set_currencies(quote_currencies)
+
+    def update_bp(self):
         try:
-            response = json.loads(response.read())
+            jsonresp = self.get_json('bitpay.com', "/api/rates")
         except Exception:
             return
         quote_currencies = {}
         try:
-            for r in response:
-                quote_currencies[r] = self._lookup_rate(response, r)
+            for r in jsonresp:
+                quote_currencies[str(r["code"])] = decimal.Decimal(r["rate"])
+            with self.lock:
+                self.quote_currencies = quote_currencies
+        except KeyError:
+            pass
+        self.parent.set_currencies(quote_currencies)
+
+    def update_cb(self):
+        try:
+            jsonresp = self.get_json('coinbase.com', "/api/v1/currencies/exchange_rates")
+        except Exception:
+            return
+
+        quote_currencies = {}
+        try:
+            for r in jsonresp:
+                if r[:7] == "btc_to_":
+                    quote_currencies[r[7:].upper()] = self._lookup_rate_cb(jsonresp, r)
+            with self.lock:
+                self.quote_currencies = quote_currencies
+        except KeyError:
+            pass
+        self.parent.set_currencies(quote_currencies)
+
+
+    def update_bc(self):
+        try:
+            jsonresp = self.get_json('blockchain.info', "/ticker")
+        except Exception:
+            return
+        quote_currencies = {}
+        try:
+            for r in jsonresp:
+                quote_currencies[r] = self._lookup_rate(jsonresp, r)
             with self.lock:
                 self.quote_currencies = quote_currencies
         except KeyError:
@@ -109,12 +248,66 @@ class Exchanger(threading.Thread):
         self.parent.set_currencies(quote_currencies)
         # print "updating exchange rate", self.quote_currencies["USD"]
 
-            
+    def update_lb(self):
+        try:
+            jsonresp = self.get_json('localbitcoins.com', "/bitcoinaverage/ticker-all-currencies/")
+        except Exception:
+            return
+        quote_currencies = {}
+        try:
+            for r in jsonresp:
+                quote_currencies[r] = self._lookup_rate_lb(jsonresp, r)
+            with self.lock:
+                self.quote_currencies = quote_currencies
+        except KeyError:
+            pass
+        self.parent.set_currencies(quote_currencies)
+
+
+    def update_bv(self):
+        try:
+            jsonresp = self.get_json('api.bitcoinvenezuela.com', "/")
+        except Exception:
+            return
+        quote_currencies = {}
+        try:
+            for r in jsonresp["BTC"]:
+                quote_currencies[r] = Decimal(jsonresp["BTC"][r])
+            with self.lock:
+                self.quote_currencies = quote_currencies
+        except KeyError:
+            pass
+        self.parent.set_currencies(quote_currencies)
+
+
+    def update_ba(self):
+        try:
+            jsonresp = self.get_json('api.bitcoinaverage.com', "/ticker/global/all")
+        except Exception:
+            return
+        quote_currencies = {}
+        try:
+            for r in jsonresp:
+                if not r == "timestamp":
+                    quote_currencies[r] = self._lookup_rate_ba(jsonresp, r)
+            with self.lock:
+                self.quote_currencies = quote_currencies
+        except KeyError:
+            pass
+        self.parent.set_currencies(quote_currencies)
+
+
     def get_currencies(self):
         return [] if self.quote_currencies == None else sorted(self.quote_currencies.keys())
 
     def _lookup_rate(self, response, quote_id):
         return decimal.Decimal(str(response[str(quote_id)]["15m"]))
+    def _lookup_rate_cb(self, response, quote_id):
+        return decimal.Decimal(str(response[str(quote_id)]))
+    def _lookup_rate_ba(self, response, quote_id):
+        return decimal.Decimal(response[str(quote_id)]["last"])
+    def _lookup_rate_lb(self, response, quote_id):
+        return decimal.Decimal(response[str(quote_id)]["rates"]["last"])
 
 
 class Plugin(BasePlugin):
@@ -123,87 +316,279 @@ class Plugin(BasePlugin):
         return "Exchange rates"
 
     def description(self):
-        return """exchange rates, retrieved from blockchain.info"""
+        return """exchange rates, retrieved from blockchain.info, CoinDesk, or Coinbase"""
 
 
     def __init__(self,a,b):
         BasePlugin.__init__(self,a,b)
-        self.currencies = [self.config.get('currency', "EUR")]
-        self.exchanges = [self.config.get('use_exchange', "CoinDesk")]
+        self.currencies = [self.fiat_unit()]
+        self.exchanges = [self.config.get('use_exchange', "Blockchain")]
 
     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 set_quote_text(self, btc_balance, r):
-        r[0] = self.create_quote_text(Decimal(btc_balance) / 100000000)
-
-    def create_quote_text(self, btc_balance):
-        quote_currency = self.config.get("currency", "EUR")
+    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 BTC~%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", "Blockchain")
-        quote_balance = self.exchanger.exchange(btc_balance, quote_currency)
-        if quote_balance is None:
+        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):
-        out = BasePlugin.toggle(self)
+        enabled = BasePlugin.toggle(self)
         self.win.update_status()
-        return out
+        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', "Blockchain")
+            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 == "VEF":
+                    try:
+                        resp_hist = self.exchanger.get_json('api.bitcoinvenezuela.com', "/historical/index.php?coin=BTC")['VEF_BTC']
+                    except Exception:
+                        return
+                elif cur_currency == "ARS":
+                    try:
+                        resp_hist = self.exchanger.get_json('api.bitcoinvenezuela.com', "/historical/index.php?coin=BTC")['ARS_BTC']
+                    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):
-            cur_request = str(self.currencies[x])
-            if cur_request != self.config.get('currency', "EUR"):
+            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', "Blockchain")
+                if cur_request == "USD" and (cur_exchange == "CoinDesk" or cur_exchange == "Winkdex"):
+                    hist_checkbox.setEnabled(True)
+                elif cur_request == "VEF" and (cur_exchange == "BitcoinVenezuela"):
+                    hist_checkbox.setEnabled(True)
+                elif cur_request == "ARS" 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', "Blockchain"):
                 self.config.set_key('use_exchange', cur_request, True)
-                self.win.update_status()
-                if cur_request == "Blockchain":
-                    self.exchanger.update_bc()
-                elif cur_request == "CoinDesk":
-                    self.exchanger.update_cd()
+                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 == "VEF" or cur_currency == "ARS":
+                        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', "Blockchain")
+            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.config.get('currency', "EUR")
+            current_currency = self.fiat_unit()
             try:
                 combo.clear()
             except Exception:
@@ -232,19 +617,49 @@ class Plugin(BasePlugin):
 
         set_exchanges(combo_ex)
         set_currencies(combo)
+        set_hist_check(hist_checkbox)
         combo.currentIndexChanged.connect(on_change)
         combo_ex.currentIndexChanged.connect(on_change_ex)
-        combo.connect(d, SIGNAL('refresh_currencies_combo()'), lambda: set_currencies(combo))
+        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(ok_button,2,1)
-        
+        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)