Gets the checked attributes

        :returns: list<str> -- checked attribute names

def getChecked(self):
        """Gets the checked attributes

        :returns: list<str> -- checked attribute names
        """
        attrs = []
        layout = self.layout()
        for i in range(layout.count()):
            w = layout.itemAt(i).widget()
            if w.isChecked():
                attrs.append(str(w.text()))
        return attrs