SMART datagrid :: onCollapsing

DataLudi.GridView.onCollapsing event

It will be fired just before collapsing Group Row which has been expanded.

If explicitly return false within this event handler, it will not be collapsed. And, after being collapsed, onCollapsed event will be fired.

function onCollapsing (grid: GridView, group: GroupRow): Boolean;

Code -1

    grid.onCollapsing = function (grid, group) {
        if (group.getChild(0).getData('state') == 'x') {
            return false;
        }
    };