override def doLayout() {
        // Viewport size changed. Change main column width.
        if (mdl.mainColumn > 0 && tableHeader != null &&  tableHeader.getResizingColumn == null) {
            val tcm = getColumnModel
            val delta = getParent.getWidth - tcm.getTotalColumnWidth
            val col = tcm.getColumn(mdl.mainColumn)

            col.setPreferredWidth(col.getPreferredWidth + delta)
            col.setWidth(col.getPreferredWidth)
        }
        else
            super.doLayout()
    }