Force Dropped File to Show Icon

[Chuck]

I've got a UI element that allows users to drop a file onto a container field on the layout. There's a button as well that lets them select a file using the `Insert File` script step. The options for the `Insert File` script step allow me to force the display of the file to be an icon with the filename. I want to do the same thing when the user drops the file, but as it currently stands, dropping a file shows a preview for a PDF, while using the script shows (on OS X) the Preview app's icon.

Is it easily possible to have the dropped file behavior duplicate that of script step? I haven't seen anything in the info window or other areas that seem to change this behavior. I figure I can do it with an OnObjectModify trigger (export the dropped file to a temp folder and reimport using the script step with the desired options), but it seems like this is something that should be easier.

Thanks,

Chuck