GWT-Ext : Distinct Multiple Filter Columns

Did you need a separate filter on each grid column, instead of a single filter for all grid? If the answer is "yes" then this is your solution.

Here it's an image of the DMFC - distinct multiple filter columns - grid, which instead of implementing the standard filtering operation of "OR" with one value for all, it does "AND" with different value for each column.

And here is the result:

If you need the sources let me a comment and I'll come back to you!