Reorder lines in Suitelet Sublist

Using SuiteScript 2.1

I would like the user to be able to reorder the lines in a INLINEEDITOR sublist created in a Suitelet. I would like there to be Move Up, Move Down buttons, and/or allow the line to be dragged up or down.

This would be similar to the type of sublist you get when you add a create a custom record with one of the fields a List/Record type and Record Is Parent is checked.

Is this possible?

As a workaround, I keep track of the currently selected line with a global variable set in validateLine and added Move Up and Move Down buttons. A function moveUpDown can see the value of the global variable. The buttons call the function, sending 1 (for Down) or -1 (for Up) and it simply swaps the values of the selected line and the one above or below. I check to see that the selected line isn't the first line (moveUp) or last line (moveDown). Since I have numerous sublists on the page the addButton functionName includes the id of the sublist.