Extending my own screens from studio

Support
#1

Hi
I see it is possible to create a screen through extending an existing screen from base project.
I think it should be possible to extend one of my own screens through coding (like described in the documentation) but is there a way to do so directly from studio ?
Michael

#2

We don’t support extending the project’s screens in Studio intentionally because there is better alternative for code reuse - composition with Frames. It is more natural and less error prone. Extending should be the last resort when you need to change a screen from a base project.

#3

Understood. My requirement would be to be able to alter an existing screen from my project depending on some configuration.
For instance masking some fields. I guess I have to rely on coding then - altering visibility in the init method of the screen (right ?)

#4

Yes, you can alter visibility or create components via ComponentsFactory, bind to datasources if needed and add them to the screen. For example:


@Inject
private ComponentsFactory componentsFactory;

@Override
public void init(Map<String, Object> params) {
    LookupField lookupField = componentsFactory.createComponent(LookupField.class);
    lookupField.setDatasource(someDs, "someProperty");
    lookupField.setOptionsDatasource(someOptionsDs);
    someGroupBox.add(lookupField);
}

You can also add frames to your screen dynamically, like in this sample project.