SMART datagrid v.1 > Classes > GridBase
Row grouping level of data field which has been specified by parameter field. The level of field which has been grouped first is 1. If it is not involved in row grouping, it will return -1.
field can be a field name or index.
var idx = grid.focusedIndex();
if (idx.column.index() >= 0) {
var level = grdMain.getGroupLevel(idx.column.index());
alert("Group level of " + idx.fieldName + ": " + level);
}