# -*- coding: utf-8 -*-
# This file is part of pygal
#
# A python svg graph plotting library
# Copyright © 2012-2014 Kozea
#
# This library is free software: you can redistribute it and/or modify it under
# the terms of the GNU Lesser General Public License as published by the Free
# Software Foundation, either version 3 of the License, or (at your option) any
# later version.
#
# This library is distributed in the hope that it will be useful, but WITHOUT
# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
# FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for more
# details.
#
# You should have received a copy of the GNU Lesser General Public License
# along with pygal. If not, see <http://www.gnu.org/licenses/>.
"""
Little helpers for series

"""
from pygal.util import cached_property


class Serie(object):
    """Serie containing title, values and the graph serie index"""
    def __init__(self, title, values, metadata=None):
        self.title = title
        self.values = values
        self.metadata = metadata or {}

    @cached_property
    def safe_values(self):
        return list(filter(lambda x: x is not None, self.values))


class Label(object):
    """A label with his position"""
    def __init__(self, label, pos):
        self.label = label
        self.pos = pos
