Listener on visible/non-visible columns

[maestass]

Hi,

I would like to apply a listener on visible/non-visible columns so that I can always have an updated list of visible fields of my ListGrid.
The goal is to have an updated list of which columns are visible and non-visible. Then, on every action (make the column visible or non-visible) this list should become visible.

I was wondering how to have this?

version:
com.smartgwt:smartgwt:5.1d-2015

[Blama]

Hi maestass,

did you see FieldStateChangedHandler?

Best regards
Blama

[maestass]

Hi Blama

Thank you for your prompt answer.
That helps a lot but could you please give me an example of how to use it in the context I described above? How can I check that every existing column is hidden or not ?

ListGrid.addFieldStateChangedHandler(new FieldStateChangedHandler() { @Override public void onFieldStateChanged(FieldStateChangedEvent fieldStateChangedEvent) { //what to do here } });

[Blama]

There is Listgrid.getFieldState() which returns a JSON-like String (I think the docs say somewhere it's not real JSON). You can work with that String, extract visible/non-visible fields and compare that to getAllFields(). Perhaps in your case, working with that method and getFields() is even more easy.