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139 lines
4.1 KiB
139 lines
4.1 KiB
from PyQt4.QtGui import * |
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from PyQt4.QtCore import * |
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import decimal |
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import httplib |
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import json |
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import threading |
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import re |
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from decimal import Decimal |
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from electrum.plugins import BasePlugin |
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from electrum.i18n import _ |
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from electrum_gui.qt.util import * |
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class Exchanger(threading.Thread): |
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def __init__(self, parent): |
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threading.Thread.__init__(self) |
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self.daemon = True |
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self.parent = parent |
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self.quote_currencies = None |
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self.lock = threading.Lock() |
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def exchange(self, btc_amount, quote_currency): |
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with self.lock: |
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if self.quote_currencies is None: |
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return None |
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quote_currencies = self.quote_currencies.copy() |
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if quote_currency not in quote_currencies: |
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return None |
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return btc_amount * quote_currencies[quote_currency] |
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def run(self): |
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try: |
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connection = httplib.HTTPConnection('blockchain.info') |
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connection.request("GET", "/ticker") |
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except: |
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return |
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response = connection.getresponse() |
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if response.reason == httplib.responses[httplib.NOT_FOUND]: |
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return |
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try: |
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response = json.loads(response.read()) |
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except: |
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return |
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quote_currencies = {} |
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try: |
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for r in response: |
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quote_currencies[r] = self._lookup_rate(response, r) |
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with self.lock: |
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self.quote_currencies = quote_currencies |
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self.parent.set_currencies(quote_currencies) |
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except KeyError: |
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pass |
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def get_currencies(self): |
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return [] if self.quote_currencies == None else sorted(self.quote_currencies.keys()) |
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def _lookup_rate(self, response, quote_id): |
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return decimal.Decimal(str(response[str(quote_id)]["15m"])) |
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class Plugin(BasePlugin): |
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def fullname(self): |
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return "Exchange rates" |
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def description(self): |
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return """exchange rates, retrieved from blockchain.info""" |
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def __init__(self,a,b): |
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BasePlugin.__init__(self,a,b) |
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self.currencies = [self.config.get('currency', "EUR")] |
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def init(self): |
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self.win = self.gui.main_window |
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self.win.connect(self.win, SIGNAL("refresh_currencies()"), self.win.update_status) |
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# Do price discovery |
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self.exchanger = Exchanger(self) |
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self.exchanger.start() |
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def set_currencies(self, quote_currencies): |
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self.currencies = sorted(quote_currencies.keys()) |
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self.win.emit(SIGNAL("refresh_currencies()")) |
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self.win.emit(SIGNAL("refresh_currencies_combo()")) |
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def set_quote_text(self, btc_balance, r): |
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r[0] = self.create_quote_text(Decimal(btc_balance) / 100000000) |
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def create_quote_text(self, btc_balance): |
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quote_currency = self.config.get("currency", "EUR") |
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quote_balance = self.exchanger.exchange(btc_balance, quote_currency) |
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if quote_balance is None: |
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quote_text = "" |
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else: |
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quote_text = "%.2f %s" % (quote_balance, quote_currency) |
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return quote_text |
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def requires_settings(self): |
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return True |
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def toggle(self): |
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out = BasePlugin.toggle(self) |
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self.win.update_status() |
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return out |
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def settings_widget(self, window): |
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combo = QComboBox() |
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def on_change(x): |
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cur_request = str(self.currencies[x]) |
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if cur_request != self.config.get('currency', "EUR"): |
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self.config.set_key('currency', cur_request, True) |
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self.win.update_status() |
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def set_currencies(combo): |
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try: |
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combo.clear() |
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except: |
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return |
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combo.addItems(self.currencies) |
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try: |
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index = self.currencies.index(self.config.get('currency', "EUR")) |
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except: |
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index = 0 |
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combo.setCurrentIndex(index) |
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set_currencies(combo) |
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combo.currentIndexChanged.connect(on_change) |
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combo.connect(window, SIGNAL('refresh_currencies_combo()'), lambda: set_currencies(combo)) |
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return combo |
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