ExportOverlay does not work if overlay type is interface

[Tomislav Haramustek]

I have following problem.

I'm trying to export the HandlerRegistration interface. Since it is GWT's internal interface, it can be exported only by using ExportOverlay.

I have class looks like this:

@Export

@ExportPackage("_internal")

public class JsHandlerRegistration implements ExportOverlay<HandlerRegistration> {

@Export

public JsHandlerRegistration() {

}

public void removeHandler() {

}

}

In the beginning it was just removeHandler(){} there. But, then, after going through various comments made on gwt-exporter, I realized that I probably need an empty (default) constructor annotated with @Export. OK, I added that then. But, still no luck and I'm getting the following exception:

Referencing method 'com.ericsson.itk.framework.client.javascriptapi.exporters.JsHandlerRegistrationExporterImpl.___create()': unable to resolve method

And, yes, really, there is no ___create method in the generated JsHandlerRegistrationExporterImpl class.

I'm not sure if the fact that HandlerRegistration is an interface causes a problem or what. All the examples found are overlaying classes, and not interfaces. 

I'm using 2.4.0-M2-SNAPSHOT.

Thanks.

[Manuel Carrasco Moñino]

Yep, export-overlay is thought for classes.
This feature could be nice under certain circumstances, please fill an
issue with some code example about what you would like and edge cases.

- Manolo

[Samuel Doyle]

This also applies where the type is an abstract class as well so this is pretty limiting if unable to work with either abstract class or interface.