qml: initial crash handler impl

electrum/gui/qml/components/main.qml

@@ -241,6 +241,11 @@ ApplicationWindow
         id: notificationPopup
     }
 
+    Component {
+        id: crashDialog
+        ExceptionDialog {}
+    }
+
     Component.onCompleted: {
         coverTimer.start()
 
@@ -331,6 +336,12 @@ ApplicationWindow
         function onUserNotify(message) {
             notificationPopup.show(message)
         }
+        function onShowException() {
+            var dialog = crashDialog.createObject(app, {
+                crashData: AppController.crashData()
+            })
+            dialog.open()
+        }
     }
 
     Connections {