SMART datagrid v.1 > Classes > GridView
Return the index list of data rows which have become hidden state by setHidden or setHiddenRows.
$('#unhideAll').click(function () {
var rows = grid.getHiddenRows();
if (rows && rows.length > 0) {
console.log(rows);
grid.setHiddenRows(rows, false);
}
});