SMART datagrid v.1 > Classes > ValueColumn

DataLudi.ValueColumn.summaryCallback  property

Callback function which finds the sum displayed in summary cell of column header and column footer cell. 

function (column: ValueColumn): Number;

You can specify summaryCallback separately in Summary cell and Footer cell respectively, and if specify individual callback, callback function specified by this property will be ignored. 

Defaults to null.

Getter

function summaryCallback(): Function

Setter

function setSummaryCallback(value: Function)

    column.setSummaruyCallback(function (column) {
        var f = column.dataIndex();
        var ds = column.grid().dataSource();
        var sum = 0;
        for (var r = ds.rowCount(); r--;) {
            sum += ds.getValue(r, f);
        }
        return sum;
    });

See Also

ColumnHeader.summary

GridColumn.footer

ColumnSummary.summaryCallback

Examples

Column Footer

Header Summary