javascript - using fabricjs to get selected group on canvas and then change text -

i trying add curved text on canvas . example works al right . trying add curved text whenever user type text in text-area should check if 1 canvas object selected if selected text selected object should change otherwise new object should added on canvas .

check fiddle , http://jsfiddle.net/nhs8t/7/

below code have written check if object on canvas selected or not ?? canvas.getactivegroup() not working ???

jquery code::

$('.text').change(function() {          var act = canvas.getactivegroup();              var obj = canvas.getactiveobject();          if(!obj)          {             console.log('object not selected');          }else          {             console.log('object  selected');          }          if (!canvas.getactivegroup())           {             console.log('if part executed--object not selected');              curvedtext[cur] = new curvedtext(canvas, {});             curvedtext[cur].center();             curvedtext[cur].settext($(this).val());             cur++;           } else {             console.log('else part executed-object selected');             act.settext($(this).val());             $("<li id='item_li" + + "' class='item_list'> " + $(this).val() + " <div class='updown' style='text-align:right;'> [ <a id='down_link" + + "' class='down'>down</a> ] [<a id='close_link" + + "' class='close'>close</a>] </div></li>").appendto($("#items_list"));         }      });