flex datagrid columns drag

Question

I have a data grid where users can drag columns and reposition them. But there is a strange requirement that some columns should not be draged to the left of some other column.

eg, assume the columns are : name, price , start date, end date,

The end date should not be dragged and placed before the start date. i.e. The user can have

• start date, price , name , end date.
• name, start date, price , end date.

But at no point can end date appear before start date.

Is there a way to do this flex? Is there a way to know where the user is trying to drop the column and show error message ?

Answer 1

You need to listen for the headerShift event, check the new index against the indexes of the ones its not allowed to be before, and move it back yourself.