complete and refactor Fx preferences and use in Send/Receive tabs

electrum/gui/qml/components/Preferences.qml

@@ -35,12 +35,20 @@ Pane {
                 ComboBox {
                     id: baseUnit
                     model: ['BTC','mBTC','bits','sat']
+                    onCurrentValueChanged: {
+                        if (activeFocus)
+                            Config.baseUnit = currentValue
+                    }
                 }
 
                 CheckBox {
                     id: thousands
                     Layout.columnSpan: 2
                     text: qsTr('Add thousands separators to bitcoin amounts')
+                    onCheckedChanged: {
+                        if (activeFocus)
+                            Config.thousandsSeparator = checked
+                    }
                 }
 
                 CheckBox {
@@ -50,45 +58,58 @@ Pane {
                     enabled: false
                 }
 
-                CheckBox {
-                    id: writeLogs
-                    Layout.columnSpan: 2
-                    text: qsTr('Write logs to file')
-                    enabled: false
-                }
-
                 Label {
                     text: qsTr('Fiat Currency')
                 }
 
                 ComboBox {
                     id: currencies
-                    model: Daemon.currencies
+                    model: Daemon.fx.currencies
+                    onCurrentValueChanged: {
+                        if (activeFocus)
+                            Daemon.fx.fiatCurrency = currentValue
+                    }
+                }
+
+                CheckBox {
+                    id: historyRates
+                    text: qsTr('History rates')
+                    enabled: currencies.currentValue != ''
+                    Layout.columnSpan: 2
+                    onCheckStateChanged: {
+                        if (activeFocus)
+                            Daemon.fx.historyRates = checked
+                    }
+                }
+
+                Label {
+                    text: qsTr('Source')
+                    enabled: currencies.currentValue != ''
+                }
+
+                ComboBox {
+                    id: rateSources
+                    enabled: currencies.currentValue != ''
+                    model: Daemon.fx.rateSources
+                    onModelChanged: {
+                        currentIndex = rateSources.indexOfValue(Daemon.fx.rateSource)
+                    }
+                    onCurrentValueChanged: {
+                        if (activeFocus)
+                            Daemon.fx.rateSource = currentValue
+                    }
                 }
             }
 
         }
 
-        RowLayout {
-            Layout.fillWidth: true
-            Layout.alignment: Qt.AlignHCenter
-            Button {
-                text: qsTr('Save')
-                onClicked: save()
-            }
-        }
-    }
-
-    function save() {
-        Config.baseUnit = baseUnit.currentValue
-        Config.thousandsSeparator = thousands.checked
-        Config.fiatCurrency = currencies.currentValue ? currencies.currentValue : ''
-        app.stack.pop()
     }
 
     Component.onCompleted: {
         baseUnit.currentIndex = ['BTC','mBTC','bits','sat'].indexOf(Config.baseUnit)
         thousands.checked = Config.thousandsSeparator
-        currencies.currentIndex = currencies.indexOfValue(Config.fiatCurrency)
+        currencies.currentIndex = currencies.indexOfValue(Daemon.fx.fiatCurrency)
+        historyRates.checked = Daemon.fx.historyRates
+        rateSources.currentIndex = rateSources.indexOfValue(Daemon.fx.rateSource)
     }
 }

electrum/gui/qml/components/Receive.qml

@@ -81,19 +81,19 @@ Pane {
 
         TextField {
             id: amountFiat
-            visible: Config.fiatCurrency != ''
+            visible: Daemon.fx.fiatCurrency != ''
             font.family: FixedFont
             Layout.fillWidth: true
             inputMethodHints: Qt.ImhDigitsOnly
         }
 
         Label {
-            visible: Config.fiatCurrency != ''
+            visible: Daemon.fx.fiatCurrency != ''
-            text: Config.fiatCurrency
+            text: Daemon.fx.fiatCurrency
             color: Material.accentColor
         }
 
-        Item { visible: Config.fiatCurrency == ''; width: 1; height: 1; Layout.columnSpan: 2 }
+        Item { visible: Daemon.fx.fiatCurrency == ''; width: 1; height: 1; Layout.columnSpan: 2 }
 
         RowLayout {
             Layout.columnSpan: 4
@@ -356,22 +356,22 @@ Pane {
             if (amountFiat.activeFocus)
                 return
             var a = Config.unitsToSats(amount.text)
-            amountFiat.text = Daemon.fiatValue(a)
+            amountFiat.text = Daemon.fx.fiatValue(a)
         }
     }
     Connections {
         target: amountFiat
         function onTextChanged() {
             if (amountFiat.activeFocus) {
-                amount.text = Daemon.satoshiValue(amountFiat.text)
+                amount.text = Daemon.fx.satoshiValue(amountFiat.text)
             }
         }
     }
     Connections {
-        target: Network
+        target: Daemon.fx
-        function onFiatUpdated() {
+        function onQuotesUpdated() {
             var a = Config.unitsToSats(amount.text)
-            amountFiat.text = Daemon.fiatValue(a)
+            amountFiat.text = Daemon.fx.fiatValue(a)
         }
     }
 

electrum/gui/qml/components/Send.qml

@@ -52,19 +52,19 @@ Pane {
 
         TextField {
             id: amountFiat
-            visible: Config.fiatCurrency != ''
+            visible: Daemon.fx.fiatCurrency != ''
             font.family: FixedFont
             placeholderText: qsTr('Amount')
             inputMethodHints: Qt.ImhPreferNumbers
         }
 
         Label {
-            visible: Config.fiatCurrency != ''
+            visible: Daemon.fx.fiatCurrency != ''
-            text: Config.fiatCurrency
+            text: Daemon.fx.fiatCurrency
             color: Material.accentColor
         }
 
-        Item { visible: Config.fiatCurrency == ''; height: 1; Layout.columnSpan: 2; Layout.fillWidth: true }
+        Item { visible: Daemon.fx.fiatCurrency == ''; height: 1; Layout.columnSpan: 2; Layout.fillWidth: true }
 
         Item { width: 1; height: 1 } // workaround colspan on baseunit messing up row above
 
@@ -115,22 +115,22 @@ Pane {
             if (amountFiat.activeFocus)
                 return
             var a = Config.unitsToSats(amount.text)
-            amountFiat.text = Daemon.fiatValue(a)
+            amountFiat.text = Daemon.fx.fiatValue(a)
         }
     }
     Connections {
         target: amountFiat
         function onTextChanged() {
             if (amountFiat.activeFocus) {
-                amount.text = Daemon.satoshiValue(amountFiat.text)
+                amount.text = Daemon.fx.satoshiValue(amountFiat.text)
             }
         }
     }
     Connections {
-        target: Network
+        target: Daemon.fx
-        function onFiatUpdated() {
+        function onQuotesUpdated() {
             var a = Config.unitsToSats(amount.text)
-            amountFiat.text = Daemon.fiatValue(a)
+            amountFiat.text = Daemon.fx.fiatValue(a)
         }
     }
 

electrum/gui/qml/qeapp.py

@@ -16,6 +16,7 @@ from .qewallet import QEWallet
 from .qeqr import QEQRParser, QEQRImageProvider
 from .qewalletdb import QEWalletDB
 from .qebitcoin import QEBitcoin
+from .qefx import QEFX
 
 class QEAppController(QObject):
     userNotify = pyqtSignal(str)
@@ -83,7 +84,6 @@ class ElectrumQmlApplication(QGuiApplication):
 
         self.logger = get_logger(__name__)
 
-        #ElectrumQmlApplication._config = config
         ElectrumQmlApplication._daemon = daemon
 
         qmlRegisterType(QEWalletListModel, 'org.electrum', 1, 0, 'WalletListModel')
@@ -91,6 +91,7 @@ class ElectrumQmlApplication(QGuiApplication):
         qmlRegisterType(QEWalletDB, 'org.electrum', 1, 0, 'WalletDB')
         qmlRegisterType(QEBitcoin, 'org.electrum', 1, 0, 'Bitcoin')
         qmlRegisterType(QEQRParser, 'org.electrum', 1, 0, 'QRParser')
+        qmlRegisterType(QEFX, 'org.electrum', 1, 0, 'FX')
 
         self.engine = QQmlApplicationEngine(parent=self)
         self.engine.addImportPath('./qml')
@@ -121,8 +122,6 @@ class ElectrumQmlApplication(QGuiApplication):
             'protocol_version': version.PROTOCOL_VERSION
         })
 
-        self._qeconfig.fiatCurrencyChanged.connect(self._qedaemon.setFiatCurrency)
-
         qInstallMessageHandler(self.message_handler)
 
         # get notified whether root QML document loads or not

electrum/gui/qml/qeconfig.py

@@ -68,16 +68,6 @@ class QEConfig(QObject):
         self.config.amt_add_thousands_sep = checked
         self.thousandsSeparatorChanged.emit()
 
-    fiatCurrencyChanged = pyqtSignal()
-    @pyqtProperty(str, notify=fiatCurrencyChanged)
-    def fiatCurrency(self):
-        return self.config.get('currency')
-
-    @fiatCurrency.setter
-    def fiatCurrency(self, currency):
-        self.config.set_key('currency', currency)
-        self.fiatCurrencyChanged.emit()
-
     @pyqtSlot('qint64', result=str)
     @pyqtSlot('qint64', bool, result=str)
     def formatSats(self, satoshis, with_unit=False):

electrum/gui/qml/qedaemon.py

@@ -8,9 +8,9 @@ from electrum.util import register_callback, get_new_wallet_name, WalletFileExce
 from electrum.logging import get_logger
 from electrum.wallet import Wallet, Abstract_Wallet
 from electrum.storage import WalletStorage, StorageReadWriteError
-from electrum.bitcoin import COIN
 
 from .qewallet import QEWallet
+from .qefx import QEFX
 
 # wallet list model. supports both wallet basenames (wallet file basenames)
 # and whole Wallet instances (loaded wallets)
@@ -86,6 +86,7 @@ class QEDaemon(QObject):
     def __init__(self, daemon, parent=None):
         super().__init__(parent)
         self.daemon = daemon
+        self.qefx = QEFX(daemon.fx, daemon.config)
 
     _logger = get_logger(__name__)
     _loaded_wallets = QEWalletListModel()
@@ -98,7 +99,7 @@ class QEDaemon(QObject):
     activeWalletsChanged = pyqtSignal()
     availableWalletsChanged = pyqtSignal()
     walletOpenError = pyqtSignal([str], arguments=["error"])
-    currenciesChanged = pyqtSignal()
+    fxChanged = pyqtSignal()
 
     @pyqtSlot()
     @pyqtSlot(str)
@@ -135,31 +136,6 @@ class QEDaemon(QObject):
             self._logger.error(str(e))
             self.walletOpenError.emit(str(e))
 
-    @pyqtSlot(str, result=str)
-    def fiatValue(self, satoshis):
-        rate = self.daemon.fx.exchange_rate()
-        try:
-            sd = Decimal(satoshis)
-            if sd == 0:
-                return ''
-        except:
-            return ''
-        return self.daemon.fx.value_str(satoshis,rate)
-
-    # TODO: move conversion to FxThread
-    @pyqtSlot(str, result=str)
-    def satoshiValue(self, fiat):
-        rate = self.daemon.fx.exchange_rate()
-        try:
-            fd = Decimal(fiat)
-        except:
-            return ''
-        v = fd / Decimal(rate) * COIN
-        return '' if v.is_nan() else self.daemon.config.format_amount(v)
-
-    @pyqtSlot()
-    def setFiatCurrency(self):
-        self.daemon.fx.set_currency(self.daemon.config.get('currency'))
 
     @pyqtProperty('QString')
     def path(self):
@@ -180,6 +156,7 @@ class QEDaemon(QObject):
 
         return self._available_wallets
 
-    @pyqtProperty('QVariantList', notify=currenciesChanged)
+    @pyqtProperty(QEFX, notify=fxChanged)
-    def currencies(self):
+    def fx(self):
-        return [''] + self.daemon.fx.get_currencies(False)
+        return self.qefx
+

electrum/gui/qml/qefx.py

@@ -0,0 +1,107 @@
+from PyQt5.QtCore import pyqtProperty, pyqtSignal, pyqtSlot, QObject
+
+from decimal import Decimal
+
+from electrum.logging import get_logger
+from electrum.exchange_rate import FxThread
+from electrum.simple_config import SimpleConfig
+from electrum.util import register_callback
+from electrum.bitcoin import COIN
+
+class QEFX(QObject):
+    def __init__(self, fxthread: FxThread, config: SimpleConfig, parent=None):
+        super().__init__(parent)
+        self.fx = fxthread
+        self.config = config
+        register_callback(self.on_quotes, ['on_quotes'])
+        register_callback(self.on_history, ['on_history'])
+
+    _logger = get_logger(__name__)
+
+    quotesUpdated = pyqtSignal()
+    def on_quotes(self, event, *args):
+        self._logger.debug('new quotes')
+        self.quotesUpdated.emit()
+
+    historyUpdated = pyqtSignal()
+    def on_history(self, event, *args):
+        self._logger.debug('new history')
+        self.historyUpdated.emit()
+
+    currenciesChanged = pyqtSignal()
+    @pyqtProperty('QVariantList', notify=currenciesChanged)
+    def currencies(self):
+        return [''] + self.fx.get_currencies(self.historyRates)
+
+    rateSourcesChanged = pyqtSignal()
+    @pyqtProperty('QVariantList', notify=rateSourcesChanged)
+    def rateSources(self):
+        return self.fx.get_exchanges_by_ccy(self.fiatCurrency, self.historyRates)
+
+    fiatCurrencyChanged = pyqtSignal()
+    @pyqtProperty(str, notify=fiatCurrencyChanged)
+    def fiatCurrency(self):
+        return self.fx.get_currency()
+
+    @fiatCurrency.setter
+    def fiatCurrency(self, currency):
+        if currency != self.fiatCurrency:
+            self.fx.set_currency(currency)
+            self.enabled = currency != ''
+            self.fiatCurrencyChanged.emit()
+            self.rateSourcesChanged.emit()
+
+    historyRatesChanged = pyqtSignal()
+    @pyqtProperty(bool, notify=historyRatesChanged)
+    def historyRates(self):
+        return self.fx.get_history_config()
+
+    @historyRates.setter
+    def historyRates(self, checked):
+        if checked != self.historyRates:
+            self.fx.set_history_config(checked)
+            self.historyRatesChanged.emit()
+            self.rateSourcesChanged.emit()
+
+    rateSourceChanged = pyqtSignal()
+    @pyqtProperty(str, notify=rateSourceChanged)
+    def rateSource(self):
+        return self.fx.config_exchange()
+
+    @rateSource.setter
+    def rateSource(self, source):
+        if source != self.rateSource:
+            self.fx.set_exchange(source)
+            self.rateSourceChanged.emit()
+
+    enabledChanged = pyqtSignal()
+    @pyqtProperty(bool, notify=enabledChanged)
+    def enabled(self):
+        return self.fx.is_enabled()
+
+    @enabled.setter
+    def enabled(self, enable):
+        if enable != self.enabled:
+            self.fx.set_enabled(enable)
+            self.enabledChanged.emit()
+
+    @pyqtSlot(str, result=str)
+    def fiatValue(self, satoshis):
+        rate = self.fx.exchange_rate()
+        try:
+            sd = Decimal(satoshis)
+            if sd == 0:
+                return ''
+        except:
+            return ''
+        return self.fx.value_str(satoshis,rate)
+
+    @pyqtSlot(str, result=str)
+    def satoshiValue(self, fiat):
+        rate = self.fx.exchange_rate()
+        try:
+            fd = Decimal(fiat)
+        except:
+            return ''
+        v = fd / Decimal(rate) * COIN
+        return '' if v.is_nan() else self.config.format_amount(v)

electrum/gui/qml/qenetwork.py

@@ -15,7 +15,6 @@ class QENetwork(QObject):
         register_callback(self.on_proxy_set, ['proxy_set'])
         register_callback(self.on_status, ['status'])
         register_callback(self.on_fee_histogram, ['fee_histogram'])
-        register_callback(self.on_fiat, ['on_quotes','on_history'])
 
     _logger = get_logger(__name__)
 
@@ -27,7 +26,6 @@ class QENetwork(QObject):
     proxyChanged = pyqtSignal()
     statusChanged = pyqtSignal()
     feeHistogramUpdated = pyqtSignal()
-    fiatUpdated = pyqtSignal()
 
     # shared signal for static properties
     dataChanged = pyqtSignal()
@@ -62,10 +60,6 @@ class QENetwork(QObject):
         self._logger.debug('fee histogram updated')
         self.feeHistogramUpdated.emit()
 
-    def on_fiat(self, event, *args):
-        self._logger.debug('new fiat quotes')
-        self.fiatUpdated.emit()
-
     @pyqtProperty(int,notify=heightChanged)
     def height(self):
         return self._height