edittree.validateGradebook = function(e,ModalFactory, Templates) {
             $("#gradetreeform").attr('data-error');
             debugger;
             ModalFactory.create({
                type: ModalFactory.types.SAVE_CANCEL,
                title: 'Delete item',
                body: 'Do you really want to delete?',
            })
            .then(function(modal) {
                modal.setSaveButtonText('Delete');
                var root = modal.getRoot();
                root.on(ModalEvents.save, function() {
                    var elementid = clickedLink.data('id');
                    // Do something to delete item
                });
            modal.show();
            });

             $("#grade_edit_tree_table .coursecategory").removeClass('category');
             $("#grade_edit_tree_table .categoryitem,#grade_edit_tree_table .courseitem").removeClass('item');
             $("#grade_edit_tree_table tr").hide();
             $(".coursecategory").show();
             $("#grade_edit_tree_table .item").each(function(index,element){
                var classCount   = element.className.split(" ");
                var valueofClass = classCount.length;
                    if(valueofClass <= 3){
                        $("input.weightoverride").attr("disabled", true);
                        element.classList.remove("item");
                        element.classList.add('test');
                        $(".test").show();
                        e.preventDefault();
                    }
              });
           $(this).hide();
       }