drag and drop of lines within a field

[Tiemo Hollmann TB]

Hello,

I want to let the user drag'n drop lines within a scrolling list field to
let him sort the sequence of (not wrapped) lines. Deleting the start line,
inserting it after the target line.

I can invent the wheel, but wanted to ask, if anybody has perhaps a nice
snipped with all the needed UI behavior, like showing the insert point
between two lines while dragging and perhaps dynamically showing the dragged
content and so on.

 

Thanks

Tiemo