Hi!
Here
i released small demo of my fork Tepi’s Filtering Table.
I hope, it would be interesting to look at the compex headers in “old vaadin table” ;).
Code based on Vaadin 7.1.13. Most changes maded in VCustomScrollTable.java.
Complex Header supports up to 6 level hierarchy (tested), column sorting (last level), collapsing and resizing.
Column reordering is not supported.
Sorry for my English.