# -*- coding: utf-8 -*-
"default plugin for setting: set it in a simple dictionary"
# Copyright (C) 2013 Team tiramisu (see AUTHORS for all contributors)
#
# This program 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 2 of the License, or
# (at your option) any later version.
#
# This program 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.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
#
# ____________________________________________________________
from ..util import Cache


class Settings(Cache):
    __slots__ = ('_properties', '_permissives')

    def __init__(self, storage):
        # properties attribute: the name of a property enables this property
        # key is None for global properties
        self._properties = {}
        # permissive properties
        self._permissives = {}
        super(Settings, self).__init__(storage)

    # propertives
    def setproperties(self, path, properties):
        self._properties[path] = properties

    def getproperties(self, path, default_properties):
        return self._properties.get(path, set(default_properties))

    def hasproperties(self, path):
        return path in self._properties

    def reset_all_propertives(self):
        self._properties.clear()

    def reset_properties(self, path):
        try:
            del(self._properties[path])
        except KeyError:
            pass

    # permissive
    def setpermissive(self, path, permissive):
        self._permissives[path] = frozenset(permissive)

    def getpermissive(self, path=None):
        return self._permissives.get(path, frozenset())

    def get_modified_properties(self):
        """return all modified settings in a dictionary
        example: {'path1': set(['prop1', 'prop2'])}
        """
        return self._properties

    def get_modified_permissives(self):
        """return all modified permissives in a dictionary
        example: {'path1': set(['perm1', 'perm2'])}
        """
        return self._permissives