qml: swap: don't show long swap success message in info box, show in popup instead

and close swap dialog after accept.

electrum/gui/qml/components/SwapDialog.qml

@@ -315,6 +315,20 @@ ElDialog {
         function onSliderPosChanged() {
             swapslider.value = swaphelper.sliderPos
         }
+        function onStateChanged() {
+            if (swaphelper.state == SwapHelper.Success) {
+                var dialog = app.messageDialog.createObject(app, {
+                    title: qsTr('Success!'),
+                    text: Config.getTranslatedMessage(swaphelper.isReverse
+                            ? 'MSG_REVERSE_SWAP_FUNDING_MEMPOOL'
+                            : 'MSG_FORWARD_SWAP_FUNDING_MEMPOOL')
+                })
+                dialog.accepted.connect(function() {
+                    Qt.callLater(root.close)
+                })
+                dialog.open()
+            }
+        }
     }
 
     Component.onCompleted: {

electrum/gui/qml/qeconfig.py

@@ -8,6 +8,7 @@ from electrum.bitcoin import TOTAL_COIN_SUPPLY_LIMIT_IN_BTC
 from electrum.i18n import set_language, languages
 from electrum.logging import get_logger
 from electrum.util import base_unit_name_to_decimal_point
+from electrum.gui import messages
 
 from .qetypes import QEAmount
 from .auth import AuthMixin, auth_protect
@@ -33,6 +34,10 @@ class QEConfig(AuthMixin, QObject):
         cv = getattr(self.config.cv, key)
         return cv.get_long_desc() if cv else ''
 
+    @pyqtSlot(str, result=str)
+    def getTranslatedMessage(self, key) -> str:
+        return getattr(messages, key)
+
     languageChanged = pyqtSignal()
     @pyqtProperty(str, notify=languageChanged)
     def language(self):

electrum/gui/qml/qeswaphelper.py

@@ -560,10 +560,7 @@ class QESwapHelper(AuthMixin, QObject, QtEventListener):
                     txid = fut.result()
                     try:  # swaphelper might be destroyed at this point
                         if txid:
-                            self.userinfo = ' '.join([
+                            self.userinfo = _('Success!')
-                                _('Success!'),
-                                messages.MSG_FORWARD_SWAP_FUNDING_MEMPOOL,
-                            ])
                             self.state = QESwapHelper.State.Success
                         else:
                             self.userinfo = _('Swap failed!')
@@ -640,10 +637,7 @@ class QESwapHelper(AuthMixin, QObject, QtEventListener):
                     txid = fut.result()
                     try:  # swaphelper might be destroyed at this point
                         if txid:
-                            self.userinfo = ' '.join([
+                            self.userinfo = _('Success!')
-                                _('Success!'),
-                                messages.MSG_REVERSE_SWAP_FUNDING_MEMPOOL,
-                            ])
                             self.state = QESwapHelper.State.Success
                         else:
                             self.userinfo = _('Swap failed!')