Checks to see if the view widget can close by checking all of its \
        sub-views to make sure they're ok to close.
        
        :return     <bool>

def canClose(self):
        """
        Checks to see if the view widget can close by checking all of its \
        sub-views to make sure they're ok to close.
        
        :return     <bool>
        """
        for view in self.findChildren(XView):
            if not view.canClose():
                return False
        return True