Currently it is only possible to either have a filter row with default editors like a text editor or a static combobox, or to have "Excel-like" filter editors with dynamic content based on the values in the column that can be selected via checkboxes.
It would be useful to mix these two approaches so you have some columns with a text editor filter that allows to enter filter criteria, and for some columns have the dynamic checkbox based filter.
Currently this is not possible because the ComboBoxFilterRowHeaderComposite and the ComboBoxGlazedListsFilterStrategy are adding behavior to the default filter row classes that avoid the usage of other editors than the checkbox based combobox editors.
Added editor checks to the ComboBoxFilterRowHeaderComposite and the ComboBoxGlazedListsFilterStrategy to forward the filtering to the default implementations if the configured editor is not a FilterRowComboBoxCellEditor.
Also added the _6037_MixedFilterRowExample to show and verify the usage.
