openlayers/ol3 — pull request #42 by fredj (2012-10-03 14:33:33+00:00)
Title: ol.interaction.Drag: ability to draw a drag box.

See new return type for handleDragStart (ol.DragCaptureResponse).
The object can contain an optional 'box' and 'boxClass' option; if
'box' is true, ol.interaction.Drag will create, update and destroy the
box div.