qml: show result dialog after password change

electrum/gui/qml/components/WalletDetails.qml

@@ -450,14 +450,12 @@ Pane {
                 infotext: qsTr('If you forget your password, you\'ll need to restore from seed. Please make sure you have your seed stored safely')
             })
             dialog.accepted.connect(function() {
-                Daemon.setPassword(dialog.password)
-            })
-            dialog.open()
-        }
-        function onPasswordChangeFailed() {
-            var dialog = app.messageDialog.createObject(app, {
-                title: qsTr('Error'),
-                text: qsTr('Password change failed')
+                var success = Daemon.setPassword(dialog.password)
+                var done_dialog = app.messageDialog.createObject(app, {
+                    title: success ? qsTr('Success') : qsTr('Error'),
+                    text: success ? qsTr('Password changed') : qsTr('Password change failed')
+                })
+                done_dialog.open()
             })
             dialog.open()
         }
@@ -501,7 +499,12 @@ Pane {
                 infotext: qsTr('If you forget your password, you\'ll need to restore from seed. Please make sure you have your seed stored safely')
             })
             dialog.accepted.connect(function() {
-                Daemon.currentWallet.setPassword(dialog.password)
+                var success = Daemon.currentWallet.setPassword(dialog.password)
+                var done_dialog = app.messageDialog.createObject(app, {
+                    title: success ? qsTr('Success') : qsTr('Error'),
+                    text: success ? qsTr('Password changed') : qsTr('Password change failed')
+                })
+                done_dialog.open()
             })
             dialog.open()
         }

electrum/gui/qml/qedaemon.py

@@ -128,7 +128,6 @@ class QEDaemon(AuthMixin, QObject):
     newWalletWizardChanged = pyqtSignal()
     serverConnectWizardChanged = pyqtSignal()
     loadingChanged = pyqtSignal()
-    passwordChangeFailed = pyqtSignal()
     requestNewPassword = pyqtSignal()
 
     walletLoaded = pyqtSignal([str,str], arguments=['name','path'])
@@ -322,14 +321,14 @@ class QEDaemon(AuthMixin, QObject):
         else:
             self.currentWallet.requestNewPassword.emit()
 
-    @pyqtSlot(str)
+    @pyqtSlot(str, result=bool)
     def setPassword(self, password):
         assert self._use_single_password
         assert password
         if not self.daemon.update_password_for_directory(old_password=self._password, new_password=password):
-            self.passwordChangeFailed.emit()
-            return
+            return False
         self._password = password
+        return True
 
     @pyqtProperty(QENewWalletWizard, notify=newWalletWizardChanged)
     def newWalletWizard(self):

electrum/gui/qml/qewallet.py

@@ -673,7 +673,7 @@ class QEWallet(AuthMixin, QObject, QtEventListener):
         except InvalidPassword as e:
             return False
 
-    @pyqtSlot(str)
+    @pyqtSlot(str, result=bool)
     def setPassword(self, password):
         if password == '':
             password = None
@@ -682,16 +682,18 @@ class QEWallet(AuthMixin, QObject, QtEventListener):
 
         # HW wallet not supported yet
         if storage.is_encrypted_with_hw_device():
-            return
+            return False
 
         current_password = self.password if self.password != '' else None
 
         try:
-            self._logger.info(f'PW change from {current_password} to {password}')
+            self._logger.info('setting new password')
             self.wallet.update_password(current_password, password, encrypt_storage=True)
             self.password = password
+            return True
         except InvalidPassword as e:
             self._logger.exception(repr(e))
+            return False
 
     @pyqtSlot(str)
     def importAddresses(self, addresslist):