lazyLoadingDataLayer.setColumnPercentageSizing(true);
for (int i = 0; i < columns.size(); i++) {
    lazyLoadingDataLayer.setColumnWidthPercentageByPosition(i, columns.get(i).getWidthPercentage());
}

//main layout
final LC lc = new LC().fill().wrapAfter(2).insets("0");
final AC cc = new AC().size("310", 0).fill(0, 1).gap("0:0").grow(1, 1);
final AC rc = new AC().fill().grow(1).align("center");
final MigLayout basicLayout = new MigLayout(lc, cc, rc);
// table
manager.getNatTable().setLayoutData("w n:400, h 45:200");

//create a layout with one column
container.setLayout(new GridLayout());
//set layout data to your NatTable instance that uses the whole available space by growing on resizing
GridDataFactory.fillDefaults().grab(true, true).applyTo(natTable);

protected ILayer createColumnHeaderLayer(BodyLayerStack bodyLayer,
        Map<String, String> titleToAttributeNameMap,
        IConfigRegistry configRegistry) {

    ILayer columnHeaderLayer = super.createColumnHeaderLayer(bodyLayer,
            titleToAttributeNameMap, configRegistry);

    FilterRowHeaderComposite<I> filterRowHeaderLayer = new FilterRowHeaderComposite<I>(
            new IFilterStrategy<I>() {
                @Override
                public void applyFilter(
                        Map<Integer, Object> filterObjectByIndex) {
                    if (filterCallback == null) return;

                    Map<String, Object> filterValuesPerColumn = new LinkedHashMap<String, Object>();
                    for (Map.Entry<Integer, Object> entry : filterObjectByIndex
                            .entrySet()) {
                        filterValuesPerColumn.put(
                                getColumnProperty(entry.getKey()),
                                entry.getValue());
                    }
                    
                    // trigger callback only if filter key/values changed from last time
                       if (!areEqual(previousFilterValuesPerColumn, filterValuesPerColumn)) {
                        filterCallback.filter(filterValuesPerColumn);
                        previousFilterValuesPerColumn.clear();
                        previousFilterValuesPerColumn.putAll(filterValuesPerColumn);
                    }
                }
            }, columnHeaderLayer, columnHeaderDataLayer.getDataProvider(),
            configRegistry);
    return filterRowHeaderLayer;
}