finish separation between plugins and GUIs
This commit is contained in:
ThomasV
184
plugins/exchange_rate/qt.py
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184
plugins/exchange_rate/qt.py
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from PyQt4.QtGui import *
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from PyQt4.QtCore import *
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from electrum_gui.qt.util import *
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from electrum_gui.qt.amountedit import AmountEdit
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from electrum.bitcoin import COIN
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from electrum.i18n import _
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from decimal import Decimal
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from functools import partial
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from electrum.plugins import hook
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from exchange_rate import FxPlugin
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class Plugin(FxPlugin):
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def connect_fields(self, window, btc_e, fiat_e, fee_e):
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def edit_changed(edit):
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edit.setStyleSheet(BLACK_FG)
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fiat_e.is_last_edited = (edit == fiat_e)
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amount = edit.get_amount()
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rate = self.exchange_rate()
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if rate is None or amount is None:
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if edit is fiat_e:
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btc_e.setText("")
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if fee_e:
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fee_e.setText("")
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else:
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fiat_e.setText("")
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else:
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if edit is fiat_e:
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btc_e.setAmount(int(amount / Decimal(rate) * COIN))
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if fee_e: window.update_fee()
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btc_e.setStyleSheet(BLUE_FG)
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else:
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fiat_e.setText(self.ccy_amount_str(
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amount * Decimal(rate) / COIN, False))
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fiat_e.setStyleSheet(BLUE_FG)
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fiat_e.textEdited.connect(partial(edit_changed, fiat_e))
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btc_e.textEdited.connect(partial(edit_changed, btc_e))
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fiat_e.is_last_edited = False
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@hook
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def init_qt(self, gui):
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self.app = gui.app
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@hook
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def do_clear(self, window):
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window.fiat_send_e.setText('')
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def close(self):
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# Get rid of hooks before updating status bars.
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FxPlugin.close(self)
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self.app.emit(SIGNAL('close_fx_plugin'))
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def restore_window(self, window):
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window.update_status()
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window.history_list.refresh_headers()
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window.fiat_send_e.hide()
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window.fiat_receive_e.hide()
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def on_quotes(self):
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self.app.emit(SIGNAL('new_fx_quotes'))
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def on_history(self):
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self.app.emit(SIGNAL('new_fx_history'))
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def on_fx_history(self, window):
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'''Called when historical fx quotes are updated'''
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window.history_list.update()
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def on_fx_quotes(self, window):
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'''Called when fresh spot fx quotes come in'''
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window.update_status()
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self.populate_ccy_combo()
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# Refresh edits with the new rate
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edit = window.fiat_send_e if window.fiat_send_e.is_last_edited else window.amount_e
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edit.textEdited.emit(edit.text())
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edit = window.fiat_receive_e if window.fiat_receive_e.is_last_edited else window.receive_amount_e
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edit.textEdited.emit(edit.text())
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# History tab needs updating if it used spot
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if self.history_used_spot:
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self.on_fx_history(window)
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def on_ccy_combo_change(self):
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'''Called when the chosen currency changes'''
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ccy = str(self.ccy_combo.currentText())
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if ccy and ccy != self.ccy:
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self.ccy = ccy
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self.config.set_key('currency', ccy, True)
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self.app.emit(SIGNAL('new_fx_quotes'))
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self.get_historical_rates() # Because self.ccy changes
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self.hist_checkbox_update()
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def hist_checkbox_update(self):
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if self.hist_checkbox:
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self.hist_checkbox.setEnabled(self.ccy in self.exchange.history_ccys())
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self.hist_checkbox.setChecked(self.config_history())
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def populate_ccy_combo(self):
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# There should be at most one instance of the settings dialog
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combo = self.ccy_combo
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# NOTE: bool(combo) is False if it is empty. Nuts.
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if combo is not None:
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combo.blockSignals(True)
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combo.clear()
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combo.addItems(sorted(self.exchange.quotes.keys()))
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combo.blockSignals(False)
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combo.setCurrentIndex(combo.findText(self.ccy))
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@hook
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def on_new_window(self, window):
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# Additional send and receive edit boxes
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send_e = AmountEdit(self.config_ccy)
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window.send_grid.addWidget(send_e, 4, 2, Qt.AlignLeft)
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window.amount_e.frozen.connect(
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lambda: send_e.setFrozen(window.amount_e.isReadOnly()))
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receive_e = AmountEdit(self.config_ccy)
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window.receive_grid.addWidget(receive_e, 2, 2, Qt.AlignLeft)
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window.fiat_send_e = send_e
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window.fiat_receive_e = receive_e
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self.connect_fields(window, window.amount_e, send_e, window.fee_e)
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self.connect_fields(window, window.receive_amount_e, receive_e, None)
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window.history_list.refresh_headers()
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window.update_status()
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window.connect(window.app, SIGNAL('new_fx_quotes'), lambda: self.on_fx_quotes(window))
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window.connect(window.app, SIGNAL('new_fx_history'), lambda: self.on_fx_history(window))
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window.connect(window.app, SIGNAL('close_fx_plugin'), lambda: self.restore_window(window))
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window.connect(window.app, SIGNAL('refresh_headers'), window.history_list.refresh_headers)
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def settings_widget(self, window):
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return EnterButton(_('Settings'), self.settings_dialog)
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def settings_dialog(self):
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d = QDialog()
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d.setWindowTitle("Settings")
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layout = QGridLayout(d)
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layout.addWidget(QLabel(_('Exchange rate API: ')), 0, 0)
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layout.addWidget(QLabel(_('Currency: ')), 1, 0)
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layout.addWidget(QLabel(_('History Rates: ')), 2, 0)
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# Currency list
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self.ccy_combo = QComboBox()
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self.ccy_combo.currentIndexChanged.connect(self.on_ccy_combo_change)
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self.populate_ccy_combo()
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def on_change_ex(idx):
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exchange = str(combo_ex.currentText())
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if exchange != self.exchange.name():
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self.set_exchange(exchange)
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self.hist_checkbox_update()
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def on_change_hist(checked):
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if checked:
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self.config.set_key('history_rates', 'checked')
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self.get_historical_rates()
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else:
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self.config.set_key('history_rates', 'unchecked')
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self.app.emit(SIGNAL('refresh_headers'))
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def ok_clicked():
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self.timeout = 0
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self.ccy_combo = None
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d.accept()
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combo_ex = QComboBox()
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combo_ex.addItems(sorted(self.exchanges.keys()))
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combo_ex.setCurrentIndex(combo_ex.findText(self.config_exchange()))
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combo_ex.currentIndexChanged.connect(on_change_ex)
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self.hist_checkbox = QCheckBox()
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self.hist_checkbox.stateChanged.connect(on_change_hist)
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self.hist_checkbox_update()
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ok_button = QPushButton(_("OK"))
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ok_button.clicked.connect(lambda: ok_clicked())
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layout.addWidget(self.ccy_combo,1,1)
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layout.addWidget(combo_ex,0,1)
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layout.addWidget(self.hist_checkbox,2,1)
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layout.addWidget(ok_button,3,1)
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return d.exec_()
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