code: function(){
          var self = this,
              list = this._listElement;            
          
          qq.attach(list, 'click', function(e){            
              e = e || window.event;
              var target = e.target || e.srcElement;
              
              if (qq.hasClass(target, self._classes.cancel)){                
                  qq.preventDefault(e);
                 
                  var item = target.parentNode;
                  self._handler.cancel(item.qqFileId);
                  qq.remove(item);
              }
          });
      }
docs: delegate click event for cancel link