In drag and drop mode, a user moves column headers to and from the column chooser by drag and drop. In select mode, the user selects column headers in the column chooser using check boxes. The select mode is designed primarily for touch-enabled devices. On mouse-equipped platforms, either mode is suitable.
Specifies a delay in milliseconds between when a user finishes typing in the column chooser's search panel, and when the search is executed.
If not set, the order is the same as in the columns array.