SMART datagrid v.1 > Classes > ValueColumn

DataLudi.ValueColumn.summaryCallback  property

求显示在列标头的summary单元格和列footer单元格的合计的回调函数。 

function (column: ValueColumn): Number;

可以分别在概述单元格和注脚单元格另行指定summaryCallback， 并且当指定个别回调时，将会忽视通过这个属性而指定的回调函数。 

默认值为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

列注脚

标头概述