DataLayer rowHeaderDataLayer = new DataLayer(rowHeaderDataProvider);
rowHeaderDataLayer.setDefaultColumnWidth(40);
ILayer rowHeaderLayer = new RowHeaderLayer(rowHeaderDataLayer,
bodyLayer, bodyLayer.getSelectionLayer());
ILayer cornerLayer = new CornerLayer(new DataLayer(
new DefaultCornerDataProvider(columnHeaderDataProvider,
rowHeaderDataProvider)), rowHeaderLayer,
filterRowHeaderLayer);
GridLayer gridLayer = new GridLayer(bodyLayer, filterRowHeaderLayer,