#
#  Copyright (c) 2007 Helmut Merz helmutm@cy55.de
#
#  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
#

"""
Managing information form objects provided by external sources, e.g. loops.agent.

$Id$
"""

from persistent.mapping import PersistentMapping
from zope import interface, component
from zope.interface import implements
from zope.component import adapts

from loops.interfaces import ILoopsObject
from loops.integrator.interfaces import IExternalSourceInfo


sourceInfoAttrName = '__loops_integrator_sourceinfo__'


class ExternalSourceInfo(object):

    implements(IExternalSourceInfo)
    adapts(ILoopsObject)

    def __init__(self, context):
        self.context = context

    def getSourceInfo(self):
        return getattr(self.context, sourceInfoAttrName, PersistentMapping())

    def getExternalIdentifier(self):
        return self.getSourceInfo().get('externalIdentifier')
    def setExternalIdentifier(self, value):
        self.getSourceInfo()['externalIdentifier'] = value
    externalIdentifier = property(getExternalIdentifier, setExternalIdentifier)