improve network status display and states of items when no wallet loaded

electrum/gui/qml/components/NetworkStats.qml

@@ -49,10 +49,12 @@ Pane {
             Layout.preferredWidth: constants.iconSizeSmall
             Layout.preferredHeight: constants.iconSizeSmall
             source: Network.status == 'connecting' || Network.status == 'disconnected'
-                ? '../../icons/status_disconnected.png' :
-                    Daemon.currentWallet.isUptodate
-                    ? '../../icons/status_connected.png'
-                    : '../../icons/status_lagging.png'
+                ? '../../icons/status_disconnected.png'
+                : Network.status == 'connected'
+                    ? Daemon.currentWallet && !Daemon.currentWallet.isUptodate
+                        ? '../../icons/status_lagging.png'
+                        : '../../icons/status_connected.png'
+                    : '../../icons/status_connected.png'
         }
         Label {
             text: Network.status

electrum/gui/qml/components/Preferences.qml

@@ -108,14 +108,13 @@ Pane {
 
                 Label {
                     text: qsTr('Lightning Routing')
-                    enabled: Daemon.currentWallet.isLightning
                 }
 
                 ComboBox {
                     id: lnRoutingType
                     valueRole: 'key'
                     textRole: 'label'
-                    enabled: Daemon.currentWallet.isLightning && false
+                    enabled: Daemon.currentWallet != null && Daemon.currentWallet.isLightning && false
                     model: ListModel {
                         ListElement { key: 'gossip'; label: qsTr('Gossip') }
                         ListElement { key: 'trampoline'; label: qsTr('Trampoline') }

electrum/gui/qml/components/WalletMainView.qml

@@ -39,7 +39,7 @@ Item {
             icon.color: 'transparent'
             action: Action {
                 text: qsTr('Channels');
-                enabled: Daemon.currentWallet.isLightning
+                enabled: Daemon.currentWallet != null && Daemon.currentWallet.isLightning
                 onTriggered: menu.openPage(Qt.resolvedUrl('Channels.qml'))
                 icon.source: '../../icons/lightning.png'
             }

electrum/gui/qml/components/main.qml

@@ -53,16 +53,6 @@ ApplicationWindow
                 visible: Network.isTestNet
                 width: column.width
                 height: column.height
-                MouseArea {
-                    anchors.fill: parent
-                    onClicked: {
-                        var dialog = app.messageDialog.createObject(app, {'text':
-                            'Electrum is currently on ' + Network.networkName + ''
-                        })
-                        dialog.open()
-                    }
-
-                }
 
                 ColumnLayout {
                     id: column
@@ -96,9 +86,11 @@ ApplicationWindow
                 Layout.preferredHeight: constants.iconSizeSmall
                 source: Network.status == 'connecting' || Network.status == 'disconnected'
                     ? '../../icons/status_disconnected.png'
-                    : Daemon.currentWallet.isUptodate
-                        ? '../../icons/status_connected.png'
-                        : '../../icons/status_lagging.png'
+                    : Network.status == 'connected'
+                        ? Daemon.currentWallet && !Daemon.currentWallet.isUptodate
+                            ? '../../icons/status_lagging.png'
+                            : '../../icons/status_connected.png'
+                        : '../../icons/status_connected.png'
             }
 
             Rectangle {

electrum/gui/qml/qenetwork.py

@@ -60,11 +60,11 @@ class QENetwork(QObject):
         self._logger.debug('fee histogram updated')
         self.feeHistogramUpdated.emit()
 
-    @pyqtProperty(int,notify=heightChanged)
+    @pyqtProperty(int, notify=heightChanged)
     def height(self):
         return self._height
 
-    @pyqtProperty('QString',notify=defaultServerChanged)
+    @pyqtProperty('QString', notify=defaultServerChanged)
     def server(self):
         return str(self.network.get_parameters().server)
 
@@ -79,7 +79,7 @@ class QENetwork(QObject):
         net_params = net_params._replace(server=server)
         self.network.run_from_another_thread(self.network.set_parameters(net_params))
 
-    @pyqtProperty('QString',notify=statusChanged)
+    @pyqtProperty('QString', notify=statusChanged)
     def status(self):
         return self._status
 
@@ -105,7 +105,7 @@ class QENetwork(QObject):
         self.network.run_from_another_thread(self.network.set_parameters(net_params))
         self.proxyChanged.emit()
 
-    @pyqtProperty('QVariant',notify=feeHistogramUpdated)
+    @pyqtProperty('QVariant', notify=feeHistogramUpdated)
     def feeHistogram(self):
         return self.network.get_status_value('fee_histogram')