SMART datagrid v.1 > Classes > ColumnSummary

DataLudi.ColumnSummary.callback  property

The callback function which returns the value to be displayed in sum cell such as column Footer, etc. 

function (scope:Object):Number;

In scope which is transferred by parameter, it contains the sum values which have been calculated within the grid. In the table below, it has explained all values set in scope. If specify this property, expression will be ignored. 

Getter

function callback(): Function

Setter

function setCallback(value: Function)

    column.footer().setCallback(function (scope) {
        return scope.sum();
    });

Note

• Like the way of specifying by expression expression, the callback function specified by this property will be called whenever redraw Footer cell, so you should not run operation which requires time.
• In the case of requiring the value besides sum values provided by grid, you must use summaryCallback.

See Also

summaryCallback

expression

Examples

Column Footer Callbacks

Column Footer