| addDrag | registers drag area |
| addDrop | registers drop area |
| createDrag | called when drag-n-drop is initiated, creates drag representation |
| destroyDrag | called after drag-n-drop, removes all traces and html elements |
| getContext | gets drag-n-drop context object |
| getMaster | returns object which controls dnd |
| getNode | gets HTML node of drag marker |
| sendSignal | sets drag-n-drop active state for drag-n-drop context object |
| unlink | removes the component from dnd logic |