lightdm-webkit2-greeter/web-greeter/utils/theme.py

# -*- coding: utf-8 -*-
#
# theme.py
#
# Copyright © 2016-2017 Antergos
#
# This file is part of whither.
#
# whither is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 3 of the License, or
# (at your option) any later version.
#
# whither 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 General Public License for more details.
#
# The following additional terms are in effect as per Section 7 of the license:
#
# The preservation of all legal notices and author attributions in
# the material or in the Appropriate Legal Notices displayed
# by works containing it is required.
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# You should have received a copy of the GNU General Public License
# along with whither; If not, see <http://www.gnu.org/licenses/>.

""" Utility class used to find and manage greeter themes. """

# Standard Lib
import os

# This Application
from .pkg_json import PackageJSON


class Theme:
    """
    Represents a greeter theme installed on the local system.

    Args:
        path (str): The absolute path to the theme's directory.

    Attributes:
        data (PackageJSON): The theme's data sourced from its `package.json` file.
    """
    def __init__(self, path: str) -> None:
        self.path = path

        self._initialize()

    def _initialize(self) -> None:
        package_json = os.path.join(self.path, 'package.json')

        try:
            self.data = PackageJSON(package_json)
        except Exception:
            self.data = None