qml: move payment progress info text updates fully into qeinvoice, qeinvoice now updates itself

directly from backend wallet callbacks

electrum/gui/qml/components/InvoiceDialog.qml

@@ -53,7 +53,9 @@ ElDialog {
                     Layout.bottomMargin: constants.paddingLarge
                     visible: text
                     text: invoice.userinfo
-                    iconStyle: InfoTextArea.IconStyle.Warn
+                    iconStyle: invoice.status == Invoice.Failed || invoice.status == Invoice.Expired
+                        ? InfoTextArea.IconStyle.Warn
+                        : InfoTextArea.IconStyle.Info
                 }
 
                 Label {
@@ -459,33 +461,12 @@ ElDialog {
                         invoice.save_invoice()
                     }
                     doPay() // only signal here
-                    helpText.text = qsTr('Payment in progress...')
                 }
             }
         }
 
     }
 
-    Connections {
-        target: Daemon.currentWallet
-        function onPaymentSucceeded(key) {
-            if (key != invoice.key) {
-                console.log('wrong invoice ' + key + ' != ' + invoice.key)
-                return
-            }
-            console.log('payment succeeded!')
-            helpText.text = qsTr('Paid!')
-        }
-        function onPaymentFailed(key, reason) {
-            if (key != invoice.key) {
-                console.log('wrong invoice ' + key + ' != ' + invoice.key)
-                return
-            }
-            console.log('payment failed: ' + reason)
-            helpText.text = qsTr('Payment failed: ' + reason)
-        }
-    }
-
     Component.onCompleted: {
         if (invoice_key != '') {
             invoice.initFromKey(invoice_key)

electrum/gui/qml/qeinvoice.py

@@ -23,7 +23,7 @@ from electrum.paymentrequest import PaymentRequest
 
 from .qetypes import QEAmount
 from .qewallet import QEWallet
-from .util import status_update_timer_interval
+from .util import status_update_timer_interval, QtEventListener, event_listener
 
 
 class QEInvoice(QObject):
@@ -120,7 +120,7 @@ class QEInvoice(QObject):
     def get_max_spendable_lightning(self):
         return self._wallet.wallet.lnworker.num_sats_can_send() if self._wallet.wallet.lnworker else 0
 
-class QEInvoiceParser(QEInvoice):
+class QEInvoiceParser(QEInvoice, QtEventListener):
     _logger = get_logger(__name__)
 
     invoiceChanged = pyqtSignal()
@@ -160,6 +160,31 @@ class QEInvoiceParser(QEInvoice):
 
         self.clear()
 
+        self.register_callbacks()
+        self.destroyed.connect(lambda: self.on_destroy())
+
+    def on_destroy(self):
+        self.unregister_callbacks()
+
+    @event_listener
+    def on_event_payment_succeeded(self, wallet, key):
+        if wallet == self._wallet.wallet and key == self.key:
+            self.statusChanged.emit()
+            self.userinfo = _('Paid!')
+
+    @event_listener
+    def on_event_payment_failed(self, wallet, key, reason):
+        if wallet == self._wallet.wallet and key == self.key:
+            self.statusChanged.emit()
+            self.userinfo = _('Payment failed: ') + reason
+
+    @event_listener
+    def on_event_invoice_status(self, wallet, key, status):
+        if wallet == self._wallet.wallet and key == self.key:
+            self.statusChanged.emit()
+            if status in [PR_INFLIGHT, PR_ROUTING]:
+                self.userinfo = _('In progress...')
+
     @pyqtProperty(int, notify=invoiceChanged)
     def invoiceType(self):
         return self._invoiceType