implement success and failure paths, keep dialog over multiple tries

electrum/gui/qml/components/OtpDialog.qml

@@ -10,13 +10,13 @@ import "controls"
 ElDialog {
     id: dialog
 
-    title: qsTr('OTP auth')
+    title: qsTr('Trustedcoin')
+    iconSource: '../../../icons/trustedcoin-status.png'
 
     property string otpauth
 
-    // property var lnurlData
-    // property InvoiceParser invoiceParser
-    // property alias lnurlData: dialog.invoiceParser.lnurlData
+    property bool _waiting: false
+    property string _otpError
 
     standardButtons: Dialog.Cancel
 
@@ -26,28 +26,67 @@ ElDialog {
         color: "#aa000000"
     }
 
-    GridLayout {
-        columns: 2
-        implicitWidth: parent.width
+    focus: true
+
+    ColumnLayout {
+        width: parent.width
 
         Label {
-            text: qsTr('code')
+            text: qsTr('Enter Authenticator code')
+            font.pixelSize: constants.fontSizeLarge
+            Layout.alignment: Qt.AlignHCenter
         }
 
         TextField {
             id: otpEdit
+            Layout.preferredWidth: fontMetrics.advanceWidth(passwordCharacter) * 6
+            Layout.alignment: Qt.AlignHCenter
+            font.pixelSize: constants.fontSizeXXLarge
+            maximumLength: 6
+            inputMethodHints: Qt.ImhSensitiveData | Qt.ImhDigitsOnly
+            echoMode: TextInput.Password
+            focus: true
+            onTextChanged: {
+                if (activeFocus)
+                    _otpError = ''
+            }
+        }
+
+        Label {
+            opacity: _otpError ? 1 : 0
+            text: _otpError
+            color: constants.colorError
+            Layout.alignment: Qt.AlignHCenter
         }
 
         Button {
             Layout.columnSpan: 2
             Layout.alignment: Qt.AlignHCenter
-            text: qsTr('Proceed')
+            text: qsTr('Submit')
+            enabled: !_waiting
             onClicked: {
-                // dialog.close()
-                otpauth = otpEdit.text
-                dialog.accept()
+                _waiting = true
+                Daemon.currentWallet.submitOtp(otpEdit.text)
             }
         }
+    }
 
+    Connections {
+        target: Daemon.currentWallet
+        function onOtpSuccess() {
+            _waiting = false
+            otpauth = otpEdit.text
+            dialog.accept()
+        }
+        function onOtpFailed(code, message) {
+            _waiting = false
+            _otpError = message
+            otpEdit.text = ''
+        }
+    }
+
+    FontMetrics {
+        id: fontMetrics
+        font: otpEdit.font
     }
 }

electrum/gui/qml/components/WalletMainView.qml

@@ -321,7 +321,7 @@ Item {
     Component {
         id: otpDialog
         OtpDialog {
-            width: parent.width * 0.9
+            width: parent.width * 2/3
             anchors.centerIn: parent
 
             onClosed: destroy()

electrum/gui/qml/qewallet.py

@@ -66,6 +66,8 @@ class QEWallet(AuthMixin, QObject, QtEventListener):
     broadcastFailed = pyqtSignal([str,str,str], arguments=['txid','code','reason'])
     labelsUpdated = pyqtSignal()
     otpRequested = pyqtSignal()
+    otpSuccess = pyqtSignal()
+    otpFailed = pyqtSignal([str,str], arguments=['code','message'])
 
     _network_signal = pyqtSignal(str, object)
 
@@ -426,7 +428,8 @@ class QEWallet(AuthMixin, QObject, QtEventListener):
 
     @auth_protect
     def sign(self, tx, *, broadcast: bool = False):
-        sign_hook = run_hook('tc_sign_wrapper', self.wallet, tx, partial(self.on_sign_complete, broadcast), None)
+        sign_hook = run_hook('tc_sign_wrapper', self.wallet, tx, partial(self.on_sign_complete, broadcast),
+                             self.on_sign_failed)
         if sign_hook:
             self.do_sign(tx, False)
             self._logger.debug('plugin needs to sign tx too')
@@ -454,16 +457,21 @@ class QEWallet(AuthMixin, QObject, QtEventListener):
         if broadcast:
             self.broadcast(tx)
 
+    # this assumes a 2fa wallet, but there are no other tc_sign_wrapper hooks, so that's ok
     def on_sign_complete(self, broadcast, tx):
+        self.otpSuccess.emit()
         if broadcast:
             self.broadcast(tx)
 
+    def on_sign_failed(self, error):
+        self.otpFailed.emit('error', error)
+
     def request_otp(self, on_submit):
         self._otp_on_submit = on_submit
         self.otpRequested.emit()
 
     @pyqtSlot(str)
-    def finish_otp(self, otp):
+    def submitOtp(self, otp):
         self._otp_on_submit(otp)
 
     def broadcast(self, tx):