The wizard for Qt Quick propose a certain style on how purely declarative .qml.ui files can be used in components and augmented by logic. e.g. the Qt Quick Controls 2 wizard produces a Page1.qml file
Anyhow, following the example to implement textField1.onEditingFinished fails:
Apparently one has to use a much more verbose syntax then:
It is unclear to me when the simple slot works, and when one has to use a Connections element.