nl_tokens: Make an element draggable .
pl_tokens: function Draggable ( <mask> , options ) { if ( ! ( this instanceof Draggable ) ) { return new Draggable ( target , options ) ; } var that = this ; //ignore existing instance var instance = draggableCache . get ( target ) ; if ( instance ) { instance . state = 'reset' ; //take over options extend ( instance , options ) ; instance . update ( ) ; return instance ; } else { //get unique id for instance //needed to track event binders that . id = getUid ( ) ; that . _ns = '.draggy_' + that . id ; //save element passed that . element = target ; draggableCache . set ( target , that ) ; } //define state behaviour defineState ( that , 'state' , that . state ) ; //preset handles that . currentHandles = [ ] ; //take over options extend ( that , options ) ; //define handle if ( that . handle === undefined ) { that . handle = that . element ; } //setup droppable if ( that . droppable ) { that . initDroppable ( ) ; } //try to calc out basic limits that . update ( ) ; //go to initial state that . state = 'idle' ; }