1 from PyQt4.QtGui import *
2 from PyQt4.QtCore import *
9 from decimal import Decimal
10 from electrum.plugins import BasePlugin
11 from electrum.i18n import _
12 from electrum_gui.qt.util import *
15 class Exchanger(threading.Thread):
17 def __init__(self, parent):
18 threading.Thread.__init__(self)
21 self.quote_currencies = None
22 self.lock = threading.Lock()
24 def exchange(self, btc_amount, quote_currency):
26 if self.quote_currencies is None:
28 quote_currencies = self.quote_currencies.copy()
29 if quote_currency not in quote_currencies:
31 return btc_amount * quote_currencies[quote_currency]
35 connection = httplib.HTTPConnection('blockchain.info')
36 connection.request("GET", "/ticker")
39 response = connection.getresponse()
40 if response.reason == httplib.responses[httplib.NOT_FOUND]:
43 response = json.loads(response.read())
49 quote_currencies[r] = self._lookup_rate(response, r)
51 self.quote_currencies = quote_currencies
52 self.parent.emit(SIGNAL("refresh_balance()"))
56 print self.quote_currencies
58 def get_currencies(self):
59 return [] if self.quote_currencies == None else sorted(self.quote_currencies.keys())
61 def _lookup_rate(self, response, quote_id):
62 return decimal.Decimal(str(response[str(quote_id)]["15m"]))
65 class Plugin(BasePlugin):
68 return "Exchange rates"
70 def description(self):
71 return """exchange rates"""
74 self.win = self.gui.main_window
75 self.exchanger = Exchanger(self.win)
76 self.win.connect(self.win, SIGNAL("refresh_balance()"), self.win.update_wallet)
78 self.exchanger.start()
79 self.gui.exchanger = self.exchanger
81 def set_status_text(self, text):
82 m = re.match( _( "Balance" ) + ": (\d.+) " + self.win.base_unit(), str(text))
84 amount = Decimal(m.group(1))
85 text += self.create_quote_text(amount)
86 self.win.balance_label.setText(text)
88 def create_quote_text(self, btc_balance):
89 quote_currency = self.config.get("currency", "None")
90 quote_balance = self.exchanger.exchange(btc_balance, quote_currency)
91 if quote_balance is None:
94 quote_text = " (%.2f %s)" % (quote_balance, quote_currency)
98 def requires_settings(self):
102 def settings_dialog(self):
103 d = QDialog(self.win)
105 vbox = QVBoxLayout(d)
110 currencies = self.exchanger.get_currencies()
111 currencies.insert(0, "None")
113 cur_label=QLabel(_('Currency') + ':')
114 grid.addWidget(cur_label , 2, 0)
115 cur_combo = QComboBox()
116 cur_combo.addItems(currencies)
118 index = currencies.index(self.config.get('currency', "None"))
121 cur_combo.setCurrentIndex(index)
122 grid.addWidget(cur_combo, 2, 1)
123 grid.addWidget(HelpButton(_('Select which currency is used for quotes.') + ' '), 2, 2)
125 vbox.addLayout(ok_cancel_buttons(d))
129 cur_request = str(currencies[cur_combo.currentIndex()])
130 if cur_request != self.config.get('currency', "None"):
131 self.config.set_key('currency', cur_request, True)
132 self.win.update_wallet()