function _onClickNewCategory() {
            var sCategory = htElement.welInputCategory.val();
            var welCategory = htElement.htCategory[sCategory];

            if (!welCategory) {
                welCategory = __addCategory(sCategory);
            }

            htElement.welInputCategory.val("");
            welCategory.welBtnPlusLabel.trigger('click');
            if (!htElement.welInputCategory.is(":focus")) {
                htElement.welInputCategory.trigger('focus');
            }
        }
Add a category just before `htElement.welNewCategory`.