I want to change some fields every time my cellTable content changes (new row, row change). Is there any predefined event/handler for that?
See if addRangeChangeHandler
or addRowCountChangeHandler
in HasRows meet your needs.
If by "row change" you mean a change in selected row(s), you can use SelectionChangeHandler attached to a SelectionModel.
Otherwise, you can simply call whatever method you need when you add a row or update a data provider.