Receive key strokes inside QtQuick.Dialogs 1.2? (How to deal with the focus)

[c64zottel]

Button {
       onPressed: {
           dialog.open()
           f.focus = true
       }

       text: "Record key"
   }

Dialog {
       id: dialog

       contentItem: Rectangle {
           color: f.activeFocus ? "red" : "yellow"
           focus: true
           implicitHeight:  200
           implicitWidth:   300
               Text {
                   id: f
                   anchors.fill: parent
                   focus: true
                   anchors.centerIn: parent
                   text: "Press key"

                   Keys.onPressed: {
                       focus: true
                       console.log( "Key: " + event.key )
                  }
            }
       }
}

Is there a better way to make a Dialog listening to a single key stroke? I fiddled around with FocusScope but I could not get anything working, except the version where the focus is set manually outside the dialog.