qml: initial plugin support, with labelsync mostly implemented

electrum/gui/qml/__init__.py

@@ -63,7 +63,7 @@ class ElectrumGui(Logger):
 
         self.gui_thread = threading.current_thread()
         self.plugins = plugins
-        self.app = ElectrumQmlApplication(sys.argv, config, daemon)
+        self.app = ElectrumQmlApplication(sys.argv, config, daemon, plugins)
         # timer
         self.timer = QTimer(self.app)
         self.timer.setSingleShot(False)

electrum/gui/qml/components/Preferences.qml

@@ -1,6 +1,6 @@
 import QtQuick 2.6
-import QtQuick.Layouts 1.0
+import QtQuick.Layouts 1.15
-import QtQuick.Controls 2.0
+import QtQuick.Controls 2.3
 import QtQuick.Controls.Material 2.0
 
 import org.electrum 1.0
@@ -12,15 +12,42 @@ Pane {
 
     property string title: qsTr("Preferences")
 
+    padding: 0
+
     property var _baseunits: ['BTC','mBTC','bits','sat']
 
-    Flickable {
+    ColumnLayout {
         anchors.fill: parent
-        contentHeight: rootLayout.height
+
+        TabBar {
+            id: tabbar
+            Layout.fillWidth: true
+            currentIndex: swipeview.currentIndex
+            TabButton {
+                text: qsTr('Preferences')
+                font.pixelSize: constants.fontSizeLarge
+            }
+            TabButton {
+                text: qsTr('Plugins')
+                font.pixelSize: constants.fontSizeLarge
+            }
+        }
+
+        SwipeView {
+            id: swipeview
+
+            Layout.fillHeight: true
+            Layout.fillWidth: true
+            currentIndex: tabbar.currentIndex
+
+            Flickable {
+                contentHeight: prefsPane.height
                 interactive: height < contentHeight
+                clip: true
 
+                Pane {
+                    id: prefsPane
                     GridLayout {
-            id: rootLayout
                         columns: 2
                         width: parent.width
 
@@ -186,12 +213,35 @@ Pane {
                     }
 
                 }
+            }
+
+            Pane {
+                ColumnLayout {
+                    id: pluginsRootLayout
+                }
+            }
+        }
+
+    }
 
     Component {
         id: pinSetup
         Pin {}
     }
 
+    Component {
+        id: pluginHeader
+        RowLayout {
+            property QtObject plugin
+            Switch {
+                checked: plugin.pluginEnabled
+            }
+            Label {
+                text: plugin.name
+            }
+        }
+    }
+
     Component.onCompleted: {
         baseUnit.currentIndex = _baseunits.indexOf(Config.baseUnit)
         thousands.checked = Config.thousandsSeparator
@@ -201,5 +251,15 @@ Pane {
         fiatEnable.checked = Daemon.fx.enabled
         spendUnconfirmed.checked = Config.spendUnconfirmed
         lnRoutingType.currentIndex = Config.useGossip ? 0 : 1
+
+        var labelsPlugin = AppController.plugin('labels')
+        if (labelsPlugin) {
+            pluginHeader.createObject(pluginsRootLayout, { plugin: labelsPlugin })
+//             console.log(Qt.resolvedUrl(labelsPlugin.settingsComponent()))
+            if (labelsPlugin.settingsComponent()) {
+                var component = Qt.createComponent(Qt.resolvedUrl(labelsPlugin.settingsComponent()))
+                component.createObject(pluginsRootLayout, {plugin: labelsPlugin})
+            }
+        }
     }
 }

electrum/gui/qml/qeapp.py

@@ -34,11 +34,12 @@ notification = None
 class QEAppController(QObject):
     userNotify = pyqtSignal(str)
 
-    def __init__(self, qedaemon):
+    def __init__(self, qedaemon, plugins):
         super().__init__()
         self.logger = get_logger(__name__)
 
         self._qedaemon = qedaemon
+        self._plugins = plugins
 
         # set up notification queue and notification_timer
         self.user_notification_queue = queue.Queue()
@@ -131,11 +132,22 @@ class QEAppController(QObject):
     def clipboardToText(self):
         return QGuiApplication.clipboard().text()
 
+    @pyqtSlot(str, result=QObject)
+    def plugin(self, plugin_name):
+        self.logger.warning(f'now {self._plugins.count()} plugins loaded')
+        plugin = self._plugins.get(plugin_name)
+        self.logger.debug(f'plugin with name {plugin_name} is {str(type(plugin))}')
+        if plugin:
+            return plugin.so
+        else:
+            self.logger.debug('None!')
+            return None
+
 class ElectrumQmlApplication(QGuiApplication):
 
     _valid = True
 
-    def __init__(self, args, config, daemon):
+    def __init__(self, args, config, daemon, plugins):
         super().__init__(args)
 
         self.logger = get_logger(__name__)
@@ -162,7 +174,6 @@ class ElectrumQmlApplication(QGuiApplication):
         qmlRegisterUncreatableType(QEAmount, 'org.electrum', 1, 0, 'Amount', 'Amount can only be used as property')
 
         self.engine = QQmlApplicationEngine(parent=self)
-        self.engine.addImportPath('./qml')
 
         screensize = self.primaryScreen().size()
 
@@ -181,13 +192,13 @@ class ElectrumQmlApplication(QGuiApplication):
         self.context = self.engine.rootContext()
         self._qeconfig = QEConfig(config)
         self._qenetwork = QENetwork(daemon.network, self._qeconfig)
-        self._qedaemon = QEDaemon(daemon)
+        self.daemon = QEDaemon(daemon)
-        self._appController = QEAppController(self._qedaemon)
+        self.appController = QEAppController(self.daemon, plugins)
         self._maxAmount = QEAmount(is_max=True)
-        self.context.setContextProperty('AppController', self._appController)
+        self.context.setContextProperty('AppController', self.appController)
         self.context.setContextProperty('Config', self._qeconfig)
         self.context.setContextProperty('Network', self._qenetwork)
-        self.context.setContextProperty('Daemon', self._qedaemon)
+        self.context.setContextProperty('Daemon', self.daemon)
         self.context.setContextProperty('FixedFont', self.fixedFont)
         self.context.setContextProperty('MAX', self._maxAmount)
         self.context.setContextProperty('QRIP', self.qr_ip_h)

electrum/gui/qml/qedaemon.py

@@ -7,6 +7,7 @@ from electrum.i18n import _
 from electrum.logging import get_logger
 from electrum.util import WalletFileException, standardize_path
 from electrum.wallet import Abstract_Wallet
+from electrum.plugin import run_hook
 from electrum.lnchannel import ChannelState
 
 from .auth import AuthMixin, auth_protect
@@ -179,6 +180,7 @@ class QEDaemon(AuthMixin, QObject):
                     self._logger.info('use single password disabled by config')
 
                 self.daemon.config.save_last_wallet(wallet)
+                run_hook('load_wallet', wallet)
             else:
                 self._logger.info('could not open wallet')
                 self.walletOpenError.emit('could not open wallet')

electrum/gui/qml/qewallet.py

@@ -62,6 +62,7 @@ class QEWallet(AuthMixin, QObject, QtEventListener):
     transactionSigned = pyqtSignal([str], arguments=['txid'])
     #broadcastSucceeded = pyqtSignal([str], arguments=['txid'])
     broadcastFailed = pyqtSignal([str,str,str], arguments=['txid','code','reason'])
+    labelsUpdated = pyqtSignal()
 
     _network_signal = pyqtSignal(str, object)
 

electrum/plugins/labels/Labels.qml

@@ -0,0 +1,45 @@
+import QtQuick 2.6
+import QtQuick.Layouts 1.0
+import QtQuick.Controls 2.14
+import QtQuick.Controls.Material 2.0
+
+import org.electrum 1.0
+
+//import "controls"
+
+Item {
+    width: parent.width
+    height: rootLayout.height
+
+    property QtObject plugin
+
+    RowLayout {
+        id: rootLayout
+        Button {
+            text: 'Force upload'
+            enabled: !plugin.busy
+            onClicked: plugin.upload()
+        }
+        Button {
+            text: 'Force download'
+            enabled: !plugin.busy
+            onClicked: plugin.download()
+        }
+    }
+
+    Connections {
+        target: plugin
+        function onUploadSuccess() {
+            console.log('upload success')
+        }
+        function onUploadFailed() {
+            console.log('upload failed')
+        }
+        function onDownloadSuccess() {
+            console.log('download success')
+        }
+        function onDownloadFailed() {
+            console.log('download failed')
+        }
+    }
+}

electrum/plugins/labels/__init__.py

@@ -5,5 +5,5 @@ description = ' '.join([
     _("Save your wallet labels on a remote server, and synchronize them across multiple devices where you use Electrum."),
     _("Labels, transactions IDs and addresses are encrypted before they are sent to the remote server.")
 ])
-available_for = ['qt', 'kivy', 'cmdline']
+available_for = ['qt', 'qml', 'kivy', 'cmdline']
 

electrum/plugins/labels/qml.py

@@ -0,0 +1,138 @@
+import threading
+
+from PyQt5.QtCore import QObject, pyqtSignal, pyqtProperty, pyqtSlot
+
+from electrum.i18n import _
+from electrum.plugin import hook
+
+from electrum.gui.qml.qewallet import QEWallet
+
+from .labels import LabelsPlugin
+
+class Plugin(LabelsPlugin):
+
+    class QSignalObject(QObject):
+        pluginChanged = pyqtSignal()
+        pluginEnabledChanged = pyqtSignal()
+        labelsChanged = pyqtSignal()
+        busyChanged = pyqtSignal()
+        uploadSuccess = pyqtSignal()
+        uploadFailed = pyqtSignal()
+        downloadSuccess = pyqtSignal()
+        downloadFailed = pyqtSignal()
+
+        _busy = False
+
+        def __init__(self, plugin, parent = None):
+            super().__init__(parent)
+            self.plugin = plugin
+
+        @pyqtProperty(str, notify=pluginChanged)
+        def name(self): return _('Labels Plugin')
+
+        @pyqtProperty(bool, notify=busyChanged)
+        def busy(self): return self._busy
+
+        @pyqtProperty(bool, notify=pluginEnabledChanged)
+        def pluginEnabled(self): return self.plugin.is_enabled()
+
+        @pyqtSlot(result=str)
+        def settingsComponent(self): return '../../../plugins/labels/Labels.qml'
+
+        @pyqtSlot()
+        def upload(self):
+            assert self.plugin
+
+            self._busy = True
+            self.busyChanged.emit()
+
+            self.plugin.push_async()
+
+        def upload_finished(self, result):
+            if result:
+                self.uploadSuccess.emit()
+            else:
+                self.uploadFailed.emit()
+            self._busy = False
+            self.busyChanged.emit()
+
+        @pyqtSlot()
+        def download(self):
+            assert self.plugin
+
+            self._busy = True
+            self.busyChanged.emit()
+
+            self.plugin.pull_async()
+
+        def download_finished(self, result):
+            if result:
+                self.downloadSuccess.emit()
+            else:
+                self.downloadFailed.emit()
+            self._busy = False
+            self.busyChanged.emit()
+
+    def __init__(self, *args):
+        LabelsPlugin.__init__(self, *args)
+
+    @hook
+    def load_wallet(self, wallet):
+        self.logger.info(f'load_wallet hook for wallet {str(type(wallet))}')
+        self.start_wallet(wallet)
+
+    def push_async(self):
+        if not self._app.daemon.currentWallet:
+            self.logger.error('No current wallet')
+            self.so.download_finished(False)
+            return
+
+        wallet = self._app.daemon.currentWallet.wallet
+
+        def push_thread(wallet):
+            try:
+                self.push(wallet)
+                self.so.upload_finished(True)
+                self._app.appController.userNotify.emit(_('Labels uploaded'))
+            except Exception as e:
+                self.logger.error(repr(e))
+                self.so.upload_finished(False)
+                self._app.appController.userNotify.emit(repr(e))
+
+        threading.Thread(target=push_thread,args=[wallet]).start()
+
+    def pull_async(self):
+        if not self._app.daemon.currentWallet:
+            self.logger.error('No current wallet')
+            self.so.download_finished(False)
+            return
+
+        wallet = self._app.daemon.currentWallet.wallet
+        def pull_thread(wallet):
+            try:
+                self.pull(wallet, True)
+                self.so.download_finished(True)
+                self._app.appController.userNotify.emit(_('Labels downloaded'))
+            except Exception as e:
+                self.logger.error(repr(e))
+                self.so.download_finished(False)
+                self._app.appController.userNotify.emit(repr(e))
+
+        threading.Thread(target=pull_thread,args=[wallet]).start()
+
+
+    def on_pulled(self, wallet):
+        self.logger.info('on pulled')
+        _wallet = QEWallet.getInstanceFor(wallet)
+        self.logger.debug('wallet ' + ('found' if _wallet else 'not found'))
+        if _wallet:
+            _wallet.labelsUpdated.emit()
+
+    @hook
+    def init_qml(self, gui: 'ElectrumGui'):
+        self.logger.debug('init_qml hook called')
+        self.logger.debug(f'gui={str(type(gui))}')
+        self._app = gui.app
+        # important: QSignalObject needs to be parented, as keeping a ref
+        # in the plugin is not enough to avoid gc
+        self.so = Plugin.QSignalObject(self, self._app)

electrum/plugins/qml_test/qml.py

@@ -10,8 +10,6 @@ class Plugin(BasePlugin):
     def __init__(self, parent, config, name):
         BasePlugin.__init__(self, parent, config, name)
 
-    _logger = get_logger(__name__)
-
     @hook
     def init_qml(self, gui: 'ElectrumGui'):
-        self._logger.debug('init_qml hook called')
+        self.logger.debug('init_qml hook called')